Partitioned vacuum pressure drainage system and pumping method

Abstract

The application discloses a partition type vacuum pressure drainage system and a pumping and draining method, and relates to the field of rural sewage treatment.

Description

Technical Field

[0001] This invention relates to the field of rural domestic sewage treatment technology, and in particular to a zoned vacuum pressure drainage system and pumping method. Background Technology

[0002] Existing sewage vacuum collection systems are basically integrated vacuum pump stations that combine vacuum pumps and pumping tanks to pump sewage from the entire village. They are generally operated continuously without interruption. For villages with scattered residences and uneven sewage generation, especially those with multiple settlements, the pumping efficiency is low, energy consumption is high, and operating costs are high. It is also difficult to achieve black and gray separation in a low-cost manner, which is not conducive to the resource utilization of rural sewage and makes it difficult to promote on a large scale in rural areas. Summary of the Invention

[0003] The purpose of this invention is to provide a partitioned vacuum pressure drainage system and pumping method, thereby solving the aforementioned problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A zoned vacuum pressure drainage system includes an air-powered pump station, an air-powered main pipe, a drainage main pipe, vacuum pressure extraction equipment, a zoned vacuum collection network, user sewage collection units, and an intelligent monitoring system. The air-powered main pipe is connected to the air-powered pump station, and at least one vacuum pressure extraction device is connected to the air-powered main pipe. The zoned vacuum collection network is connected to the vacuum pressure extraction device, and at least one user sewage collection unit is connected to the zoned vacuum collection network. The drainage main pipe is connected to the vacuum pressure extraction device and to subsequent sewage treatment and discharge facilities. The user sewage collection unit is connected to a user sewage discharge pipe. The intelligent monitoring system is connected to the air-powered pump station, the vacuum pressure extraction equipment, and the user sewage collection units.

[0006] Preferably, the pneumatic pump station includes a pump station enclosure structure and a vacuum power unit, an air compressor power unit, and a power control unit installed within the pump station enclosure structure. The vacuum power unit and the air compressor power unit are connected to the power control unit, and the power control unit is connected to the intelligent monitoring system.

[0007] The pneumatic main pipe includes a vacuum power main pipe, a compressed air main pipe, a vacuum power connecting pipe, and a compressed air connecting pipe; the vacuum power main pipe is connected to a vacuum power unit, and at least one vacuum power connecting pipe is connected to the vacuum power main pipe, which is connected to the vacuum pressure extraction equipment; the compressed air main pipe is connected to the compressed air power unit, and at least one compressed air connecting pipe is connected to the compressed air main pipe, which is connected to the vacuum pressure extraction equipment.

[0008] Preferably, the main drainage pipe includes a black water drainage main pipe, a grey water drainage main pipe, a black water drainage connecting pipe, and a grey water drainage connecting pipe; the wastewater subsequent treatment and discharge facilities include a centralized black water storage and treatment facility and a centralized grey water treatment and discharge facility; the black water drainage main pipe is connected to the centralized black water storage and treatment facility, and at least one black water drainage connecting pipe is connected to the black water drainage main pipe, which is connected to a vacuum pressure extraction device; the centralized grey water treatment and discharge facility is connected to the grey water drainage main pipe, and at least one grey water drainage connecting pipe is connected to the grey water drainage main pipe, which is connected to a vacuum pressure extraction device;

[0009] or,

[0010] The main drainage pipe includes a black water drainage main pipe and a black water drainage connecting pipe. The black water drainage main pipe is connected to a centralized black water storage and treatment facility. At least one black water drainage connecting pipe is connected to the black water drainage main pipe, and the black water drainage connecting pipe is connected to a vacuum pressure extraction device.

[0011] Preferably, the vacuum power unit includes a vacuum pump unit, a regulating filter tank, a negative pressure inlet pipe, an inlet connecting pipe, an exhaust connecting pipe, and a negative pressure sensor; the regulating filter tank has a filter layer inside, and a negative pressure inlet pipe is connected to the regulating filter tank on the inlet side of the filter layer. The negative pressure inlet pipe is connected to the vacuum power main pipe, and a negative pressure inlet valve may or may not be provided on the negative pressure inlet pipe; the regulating filter tank on the outlet side of the filter layer is connected to the inlet of the vacuum pump unit via the inlet connecting pipe, and an inlet check valve is provided on the inlet connecting pipe; the outlet of the vacuum pump unit is connected to an exhaust connecting pipe, and the exhaust connecting pipe is connected to the atmosphere; a negative pressure sensor is provided on the regulating filter tank or the inlet connecting pipe; the negative pressure sensor, the vacuum pump unit, and the negative pressure inlet valve are all connected to the power control unit;

[0012] The vacuum power unit also includes an exhaust gas treatment device. The exhaust connection pipe is connected to the air inlet of the exhaust gas treatment device, and the air outlet of the exhaust gas treatment device is connected to an exhaust gas discharge pipe, which is connected to the atmosphere.

[0013] Preferably, the vacuum pump unit includes a water ring vacuum pump, a vacuum pump discharge pipe, a water supply pipe, an upper water tank, a lower water tank, a circulating water pump, a water supply pipe, an overflow pipe, a drain pipe, a water tank level sensor, and a water temperature sensor. The air inlet and outlet of the water ring vacuum pump are respectively connected to an air inlet connecting pipe and a vacuum pump discharge pipe. The vacuum pump discharge pipe is connected to the upper water tank, and an overflow pipe is connected to the upper water tank, which is connected to the lower water tank. The water supply port of the water ring vacuum pump is connected to a water supply pipe, which is connected to the upper water tank. The lower water tank is located below the frost line, and the circulating water pump is located at the bottom of the lower water tank. The upper and lower ends of the water inlet pipe are connected to the upper water tank and the circulating water pump, respectively. An upper water tank drain valve is installed at the bottom of the upper water tank, and a water ring pump drain valve is installed on the drain outlet at the bottom of the water ring vacuum pump. The upper water tank drain valve and the water ring pump drain valve are connected to a drain pipe, which extends into the lower water tank. A water tank level sensor and a water temperature sensor are installed inside the upper water tank, and a water tank exhaust port connected to an exhaust connection pipe is installed at the top of the upper water tank. The water ring vacuum pump, the circulating water pump, the upper water tank drain valve, the water ring pump drain valve, the water tank level sensor, and the water temperature sensor are all connected to the power control unit.

[0014] The vacuum pump unit also includes a heating unit and a temperature sensor. The heating unit is located at a low position within the pump station enclosure structure, and the temperature sensor is located within the pump station enclosure structure. The heating unit and the temperature sensor are connected to the power control unit.

[0015] or,

[0016] The vacuum pump unit includes a water ring vacuum pump, a vacuum pump discharge pipe, a water supply pipe, a circulating water tank, a cooling circulating pump, a cooling circulating water pipe, and a water spray layer. The circulating water tank has a water spray layer inside, which is a certain distance from both the top of the circulating water tank and the water level line inside the tank. The top of the circulating water tank has a water tank vent. The water tank vent is connected to an vent connection pipe. The air inlet and outlet of the water ring vacuum pump are connected to the air inlet connection pipe and the vacuum pump discharge pipe, respectively. The vacuum pump discharge pipe is connected to the circulating water tank between the water spray layer and the water level line. A water supply pipe is connected to the water inlet of the vacuum pump, and the water supply pipe is connected to the circulating water tank below the water level line of the water tank; one end of the cooling circulating water pipe is connected to the bottom of the circulating water tank, and the other end of the cooling circulating water pipe is connected to the top of the circulating water tank. A spray head pointing to the middle of the water spray layer is provided at the pipe opening where the cooling circulating water pipe connects to the circulating water tank. A cooling circulating pump is provided on the cooling circulating water pipe; a water tank level sensor and a water temperature sensor are provided inside the circulating water tank; the water ring vacuum pump, the cooling circulating pump, the water tank level sensor, and the water temperature sensor are all connected to the power control unit.

[0017] The vacuum pump unit also includes a drain pipe. A reversing valve is installed on the cooling circulating water pipe above the cooling circulating pump. One end of the drain pipe is connected to the reversing valve, and the other end passes through the pump station enclosure structure and is connected to the atmosphere.

[0018] Preferably, the partitioned vacuum collection network is a single-pipe network or a double-pipe network;

[0019] When the zoned vacuum collection network is a single-pipe network: the zoned vacuum collection network includes at least one vacuum collection main pipe, a vacuum collection branch pipe, and a vacuum collection service pipe; the vacuum collection main pipe is connected to a vacuum pressure pumping device, at least one vacuum collection branch pipe is connected to the vacuum collection main pipe, at least one vacuum collection service pipe is connected to the vacuum collection branch pipe, and the vacuum collection service pipe is connected to the user's sewage collection unit.

[0020] Alternatively, the zoned vacuum collection network includes a vacuum collection main pipe and a vacuum collection service pipe. The vacuum collection main pipe is connected to a vacuum pressure pumping device, and at least one vacuum collection service pipe is connected to the vacuum collection main pipe. The vacuum collection service pipe is connected to the user's sewage collection unit.

[0021] When the zoned vacuum collection network is a dual-pipe network: the zoned vacuum collection network includes at least one black water main pipe, one black water branch pipe, one black water inlet pipe, at least one grey water main pipe, one grey water branch pipe, and one grey water inlet pipe; the black water main pipe and the grey water main pipe are both connected to a vacuum pressure extraction device, at least one black water branch pipe is connected to the black water main pipe, at least one black water inlet pipe is connected to the black water branch pipe, at least one grey water branch pipe is connected to the grey water main pipe, at least one grey water inlet pipe is connected to the grey water branch pipe, and both the black water inlet pipe and the grey water inlet pipe are connected to the user's sewage collection unit;

[0022] Alternatively, the zoned vacuum collection network includes a black water main pipe, a black water inlet pipe, a grey water main pipe, and a grey water inlet pipe. Both the black water main pipe and the grey water main pipe are connected to a vacuum pressure extraction device. At least one black water inlet pipe is connected to the black water main pipe, and at least one grey water inlet pipe is connected to the grey water main pipe. Both the black water inlet pipe and the grey water inlet pipe are connected to the user's sewage collection unit.

[0023] Preferably, the vacuum pressure extraction device includes at least one extraction tank, a negative pressure extraction pipe, a positive pressure air inlet pipe, a negative pressure water inlet pipe, a positive pressure drain pipe, a venting device, and an extraction control unit; the top of the extraction tank is connected to the negative pressure extraction pipe, the positive pressure air inlet pipe, the venting device, and at least one negative pressure water inlet pipe; a water-blocking valve may or may not be provided at the pipe opening where the negative pressure extraction pipe connects to the extraction tank; the negative pressure extraction pipe is connected to the main vacuum power pipe via a vacuum power connection pipe, and a negative pressure extraction valve is provided on the negative pressure extraction pipe; the positive pressure air inlet pipe is connected to the main compressed air pipe via a compressed air connection pipe, and a... It is equipped with a positive pressure inlet valve and an inlet pressure reducing valve; the negative pressure water inlet pipe is connected to the main vacuum collection pipe, black water main pipe, or grey water main pipe of the zoned vacuum collection pipe network, and the negative pressure water inlet pipe is equipped with a negative pressure water inlet valve and may or may not be equipped with a water inlet sensor; the positive pressure drain pipe is connected to the bottom of the extraction tank, and the positive pressure drain pipe is connected to the black water drainage main pipe and / or grey water drainage main pipe via a black water drainage connecting pipe and / or a grey water drainage connecting pipe, and the positive pressure drain pipe is equipped with a drainage check valve and may or may not be equipped with a drain valve; the top of the extraction tank is equipped with a tank pressure sensor, and the inside of the extraction tank is equipped with an extraction tank level sensor;

[0024] or,

[0025] The vacuum pressure extraction equipment includes at least one extraction tank, a negative pressure extraction pipe, a negative pressure water inlet pipe, a venting device, a positive pressure drain pipe, and an extraction control unit. The top of the extraction tank is connected to the negative pressure extraction pipe, the venting device, and at least one negative pressure water inlet pipe. A water-blocking valve may or may not be installed at the connection point between the negative pressure extraction pipe and the extraction tank. The negative pressure extraction pipe is connected to the main vacuum power pipe via a vacuum power connection pipe, and a negative pressure extraction valve is installed on the negative pressure extraction pipe. The negative pressure water inlet pipe is connected to the zoned vacuum collection network. The main pipe is connected to either the black water main pipe or the grey water main pipe. The negative pressure inlet pipe is equipped with an inlet valve or an inlet valve and an inlet sensor. The bottom of the extraction tank is connected to at least one positive pressure drain pipe. The positive pressure drain pipe is connected to the black water main pipe and / or the grey water main pipe via a black water drain connection pipe and / or a grey water drain connection pipe. The positive pressure drain pipe is equipped with a drain valve, a drain pump, and a drain check valve. The top of the extraction tank is equipped with a tank pressure sensor, and the inside of the extraction tank is equipped with a tank level sensor.

[0026] The negative pressure suction valve, positive pressure air inlet valve, water inlet valve, water inlet sensor, drain valve, tank pressure sensor, and pumping tank level sensor are all connected to the pumping control unit, which is connected to the power control unit, user control unit, and intelligent monitoring system.

[0027] Preferably, the venting device includes a venting valve and a venting pipe, one end of the venting pipe is connected to the top of the extraction tank, and the other end of the venting pipe is directly connected to the atmosphere or connected to the atmosphere via a silencer. The venting valve is installed on the venting pipe; the venting valve is connected to the extraction control unit.

[0028] Alternatively, the venting device includes a venting valve, a venting pipe, a vacuum generator, a bypass pipe, and a bypass check valve. One end of the venting pipe is connected to the top of the extraction tank, and the other end is connected to the air inlet of the vacuum generator. A venting valve is installed on the venting pipe. The suction port of the vacuum generator is connected to the bypass pipe. The bypass pipe is connected to the negative pressure water inlet pipe and is located upstream of the negative pressure water inlet valve. A bypass check valve is installed on the bypass pipe. The exhaust port of the vacuum generator is directly connected to the atmosphere or connected to the atmosphere via a silencer. The venting valve is connected to the extraction control unit.

[0029] Preferably, the water-blocking valve includes an upper valve body, a lower valve body, a float, and a sealing ring. The upper valve body has an internal through-hole that connects the upper and lower parts. The diameter of the lower opening of the internal through-hole is smaller than the diameter of the float. The upper end of the upper valve body has an interface for connecting to a negative pressure suction pipe, and the lower end has an outward-facing upper valve body flange. The outer side of the upper valve body flange has an external thread of the upper valve body. The bottom surface of the upper valve body flange is connected to the sealing ring. The center of the sealing ring has a circular hole, and the diameter of the circular hole is smaller than the diameter of the lower opening of the internal through-hole. The lower valve body is cup-shaped, with a grid air inlet around its perimeter, and an outward-facing lower valve at the top. The lower valve body has a flanged flange, and an upward-facing inner threaded ring is provided on the outer edge of the flanged flange. The inner diameter of the inner threaded ring is consistent with the outer diameter of the outer threaded ring of the upper valve body. The inner diameter and inner net height of the lower valve body below the flanged flange are both greater than the diameter of the float. The float is placed inside the lower valve body. The bulk density of the float is less than the bulk density of the sewage. The flanged flange of the lower valve body is pressed against the outer edge of the bottom surface of the sealing ring. The upper valve body and the lower valve body are fixed by threaded connection. The sealing ring is pressed and fixed between the upper valve body and the lower valve body. The water blocking valve is set inside the pumping tank, and its upper opening is connected to the opening of the negative pressure suction pipe that extends into the pumping tank.

[0030] Preferably, the user sewage collection unit includes at least one user sewage collection tank, an intelligent suction valve, a vacuum suction pipe, a collection tank level sensor, and a user control unit; the user sewage collection tank has a user sewage inlet connected to a user sewage discharge pipe at its upper part or top; the intelligent suction valve is located above or near the user sewage collection tank, and includes at least one inlet connected to a vacuum suction pipe, with each vacuum suction pipe extending into the bottom of the respective user sewage collection tank; the user sewage collection tank is equipped with... The system includes a collection tank level sensor, and a suction nozzle at the insertion end of the vacuum suction pipe. The outlet of the intelligent suction valve is connected to the vacuum collection connection pipe, black water connection pipe, or grey water connection pipe of the zoned vacuum collection network. The intelligent suction valve and the collection tank level sensor are connected to the user control unit, which is connected to the pumping control unit and the intelligent monitoring system. The user sewage collection tank is a single-compartment septic tank or a double-compartment or triple-compartment septic tank formed by setting partitions. The partitions are equipped with flow pipes connecting opposite sides of the partitions.

[0031] Preferably, the intelligent suction valve includes a suction valve and an intelligent actuator connected to the suction valve;

[0032] When the intelligent suction valve is a three-position three-way valve with two inlets, one outlet and an intelligent electric drive device: the suction valve is a T-type three-way ball valve and the intelligent actuator is a three-position three-way valve intelligent electric drive device.

[0033] The intelligent electric drive device for the three-position three-way valve includes an actuator chassis, a geared motor, a motor bracket, a coupling, a valve position sensor, a three-way valve controller, a valve cover, and a sealing gasket. The actuator chassis has a central hole and downward-facing vertical flanges of a certain height around its perimeter. The lower edge of the vertical flanges has outward-facing horizontal flanges. The actuator chassis is connected from above to the actuator bracket of a T-type three-way ball valve. The valve shaft of the T-type three-way ball valve extends upward through the central hole of the actuator chassis and above the surface of the actuator chassis. The motor bracket is fixed to the actuator chassis and has a certain height. The motor bracket has a circular hole aligned vertically with the central hole. The geared motor is fixed to the motor bracket, and its rotating shaft extends downward through the circular hole and below the upper surface of the motor bracket. The rotating shaft is coaxially connected to the valve shaft of the T-type three-way ball valve via a coupling. The valve position sensor, The three-way valve controller is fixed on the motor bracket or actuator chassis, and there is at least one valve position sensor. The coupling has a radially extending paddle that contacts and connects with the valve position sensor. The valve cover is an inverted cup-shaped cover with an outward-facing upper horizontal flange at the lower opening, the size of which matches the size of the actuator chassis. The valve cover is fastened to the actuator chassis, with the upper and lower horizontal flanges aligned vertically and pressing against each other. A sealing gasket is provided between the upper and lower horizontal flanges, and the upper horizontal flange, sealing gasket, and lower horizontal flange are fixedly connected. The geared motor, motor bracket, coupling, valve position sensor, and three-way valve controller are located inside the valve cover. The three-way valve controller is connected to the valve position sensor and the user control unit; alternatively, the three-way valve controller is connected to the valve position sensor, the collection tank level sensor, and the user control unit.

[0034] The actuator chassis may or may not have a water-soaking electrode extending downwards from the chassis. The top of the water-soaking electrode extends below the lower horizontal flange of the actuator chassis. The water-soaking electrode is connected to the three-way valve controller.

[0035] When the intelligent suction valve is a micro-controlled negative pressure pneumatic angle valve with one inlet and one outlet: the suction valve is a Y-type angle valve and the intelligent actuator is a micro-controlled negative pressure actuator;

[0036] The Y-type angle valve includes a Y-type valve body, a sealing gland, and a valve stem. The Y-type valve body includes an inlet end, an outlet end, and a blocking end. The inlet end and the outlet end are located on the same axis. The inlet end and the outlet end are respectively connected to an inlet elbow and an outlet elbow. A negative pressure air vent is provided at the top of the outlet elbow. An obliquely arranged flow hole is provided between the inlet end and the outlet end. The blocking end is provided with a hollow connecting column. A through hole is provided inside the hollow connecting column along its axial direction. There is an angle between the axis of the through hole and the axis of the inlet end and the outlet end. The sealing gland is located upstream of the flow hole and directly opposite the flow hole. The valve stem is located in the through hole and is slidably connected to the hollow connecting column. A sealing ring is provided between the valve stem and the hollow connecting column. The inner end of the valve stem is perpendicularly connected to the sealing gland, and the outer end extends out of the hollow connecting column and is provided with a valve stem nut.

[0037] The micro-controlled negative pressure actuator includes a concave base, a convex top cover, a diaphragm, a compression spring, a negative pressure air inlet pipe, a short air extraction / discharge pipe, a two-position three-way solenoid valve, and a negative pressure valve controller. The concave base has inlet and outlet holes, an outwardly flanged edge, and a central hole with a diameter larger than the diameter of the outer end of the valve stem. The outer end of the valve stem passes through the central hole and extends into the concave base. The concave base is hollow. The connecting column is fixedly connected; the diaphragm has a central hole, the diaphragm presses against the flange of the base, the outer end of the valve stem passes through the central hole, and a pressure plate is provided on each side of the central hole. The valve stem nut is pressed and fixed to the valve stem by the pressure plates on both sides of the diaphragm; the convex top cover is provided with a venting nozzle, and the outer edge of the convex top cover has an outward-facing flange, the flange of the top cover is the same size as the flange of the base, and the flange of the top cover presses against the edge of the diaphragm. The diaphragm and concave base are fixedly connected; a vacuum suction chamber is formed between the convex top cover and the diaphragm; the space between the concave base and the diaphragm is connected to the atmosphere through the base's air inlet and outlet holes; the diaphragm can move back and forth along the valve stem axis at a certain amplitude between the concave base and the convex top cover; the two ends of the compression spring are respectively connected to the inner surface of the center of the convex top cover and the outer end of the valve stem; the compression spring is in a compressed state; one end of the negative pressure air vent is connected to the negative pressure air vent nozzle on the water outlet elbow, and the other end is connected to the air outlet A of the two-position three-way solenoid valve; one end of the air extraction and discharge short pipe is connected to the air extraction and discharge nozzle, and the other end is connected to the air inlet P of the two-position three-way solenoid valve; the negative pressure air vent is equipped with an air vent check valve; the exhaust hole R of the two-position three-way solenoid valve is connected to the atmosphere; the negative pressure valve controller is connected to the two-position three-way solenoid valve and the user control unit, or the negative pressure valve controller is connected to the two-position three-way solenoid valve, the collection tank level sensor, and the user control unit.

[0038] The inlet elbow is connected to the vacuum suction pipe, and the outlet elbow is connected to the vacuum collection pipe, black water pipe, or grey water pipe.

[0039] Preferably, the liquid level sensor in the collection tank includes a sensor rod, a liquid level switch, and a protective cylinder. The protective cylinder is installed inside the user's sewage collection tank and fixed to the side wall near the inspection port of the collection tank by a liquid level device fixing bracket installed at the top. The bottom end of the protective cylinder extends to the bottom of the tank and is a certain distance away from the bottom. The top end is a certain distance above the highest liquid level of the user's sewage collection tank and is connected to the atmosphere. The liquid level inside the protective cylinder can rise and fall with the liquid level of the user's sewage collection tank, and the liquid levels inside and outside the cylinder are equal. The sensor rod is installed inside the protective cylinder and is hung on the top opening of the protective cylinder by a fixing bracket installed at the top or directly on the side wall near the inspection port of the collection tank. The sensor rod is provided with at least one sensor fixing leg, and a liquid level switch is fixed on the sensor fixing leg. The sensor rod can be pulled out or put in from the protective cylinder.

[0040] or,

[0041] The collection tank level sensor includes a sensor pole and a level switch. The sensor pole is installed inside the user's sewage collection tank and is hung on the side wall near the inspection port of the collection tank by a fixing bracket installed at the top. The bottom end of the sensor pole extends to the bottom of the tank and is a certain distance away from the bottom. The top end is a certain distance above the highest liquid level of the user's sewage collection tank. At least one sensor fixing leg is provided on the sensor pole, and a level switch is fixed on the sensor fixing leg.

[0042] The liquid level switch is connected to the user control unit, or the liquid level switch is connected to the user control unit via a three-way valve controller or a negative pressure valve controller.

[0043] Preferably, the suction nozzle is a buoyancy-isolated negative pressure suction device, including a nozzle shell, a water-blocking weir, and a suction short pipe; the water-blocking weir is located at the lower middle position of the nozzle shell, and its bottom is fixedly connected to the bottom of the nozzle shell, and both ends of the water-blocking weir are fixedly connected to the side wall of the nozzle shell.

[0044] The water-blocking weir and the side wall of the faucet shell on one side form a pumping chamber, and a grid water inlet is provided at the lower part of the faucet shell on the other side of the water-blocking weir; or, the water-blocking weir is cylindrical, the internal space of the water-blocking weir forms a pumping chamber, and a grid water inlet is provided around the lower part of the faucet shell on the outer side of the water-blocking weir.

[0045] The top of the faucet housing is provided with a suction pipe interface and a pressure balance pipe interface. The top of the pumping chamber is open. The upper end of the suction short pipe is connected to the suction pipe interface from the bottom side. The lower end of the suction short pipe extends into the pumping chamber through the open end, and the lower end of the suction short pipe is a certain distance away from the bottom of the pumping chamber. The upper edge of the weir is higher than the upper edge of the grid inlet and a certain distance away from the inner top surface of the faucet housing. The grid inlet is provided with a trash rack. A pressure balance pipe is connected to the pressure balance pipe interface.

[0046] The buoyancy-isolated negative pressure suction device is installed at the bottom of the user's sewage collection tank. The vacuum suction pipe is connected to the suction pipe interface from above. The lower end of the pressure balance pipe is connected to the pressure balance pipe interface. The upper end of the pressure balance pipe extends above the highest water level line of the user's sewage collection tank and is connected to the atmosphere.

[0047] The buoyancy-isolated negative pressure suction device can be integrated with the liquid level sensor in the collection tank, and the pressure balance tube also serves as a protective sleeve.

[0048] Preferably, the user sewage collection unit includes a valve well, which is disposed above the user sewage collection tank, and the intelligent suction valve is disposed inside the valve well and located above the user sewage collection tank;

[0049] The valve well is a combined valve well, including a buried valve box, an inspection port well cylinder, and a through-hole connector. An inspection port well cylinder is installed above the inspection ports of the two user sewage collection tanks (black and gray wastewater). The buried valve box is located between the two inspection port well cylinders. The buried valve box and the inspection port well cylinders are fixedly connected by the through-hole connector. The through-hole connector has an internal channel that connects the buried valve box and the inspection port well cylinders. The intelligent suction valve is installed inside the buried valve box. The upper end of the vacuum suction pipe has an upper horizontal pipe section. After the vacuum suction pipe rises from the user sewage collection tank through the inspection port well cylinder to the vicinity of the through-hole connector, the upper horizontal pipe section passes through the channel in the through-hole connector and extends into the buried valve box. Its port is connected to the inlet of the intelligent suction valve. The outlet of the intelligent suction valve passes through the buried valve box and is connected to the vacuum collection connection pipe, black water connection pipe, or gray water connection pipe.

[0050] or,

[0051] The user sewage collection unit includes an above-ground valve box located above the ground line near the user sewage collection pool. The intelligent suction valve is located inside the above-ground valve box. The vacuum suction pipe is introduced into the above-ground valve box through a horizontal pipe section and connected to the inlet of the intelligent suction valve. The vacuum collection connection pipe, black water connection pipe, or grey water connection pipe extends into the above-ground valve box and is connected to the outlet of the intelligent suction valve. The user control unit is located inside the above-ground valve box.

[0052] Preferably, the intelligent monitoring system includes an Internet of Things (IoT) platform and a server connected to the IoT platform; the power control unit, the exhaust control unit, and the user control unit are all connected to the IoT platform; the IoT platform is an IoT cloud platform or a local area network (LAN) platform; and the server is a cloud server or a local area server.

[0053] Another objective of this invention is to provide a partitioned vacuum pressure extraction method, which utilizes any of the drainage systems described above. The extraction method includes the following steps.

[0054] 1) Pumping station start-up conditions settings:

[0055] ①Daily scheduled start: At the set time each day, when the number of "high liquid level" alarms in the drainage zone reaches the set minimum number of drainage users, the drainage operation of the drainage station in that zone will be started on a scheduled basis.

[0056] ②Immediate activation: When a household in a certain pumping zone has a full pool, i.e., when the "pool full level" alarm is triggered, or when the number of "high level" alarms reaches the set number of households, the pumping operation of the pumping station in that zone will be activated immediately.

[0057] The pumping station is a vacuum pressure pumping equipment.

[0058] 2) Pumping station drainage mode settings:

[0059] ① One household, one row, that is, when the sewage of one household with one type of water quality is completely pumped from the user's sewage collection tank and enters the pumping tank through the zoned vacuum collection pipeline network, the drainage program is started; ② When the pumping tank is full, or when the liquid level of sewage of the same type of water quality in the pumping tank reaches the drainage start condition, or when the pumping of the same type of water quality is completed and the water quality is changed, or when all users in a "pumping batch" are alarmed and the pumping is completed, the drainage program is started.

[0060] A "pumping and drainage batch" refers to all alarm users within a pumping and drainage zone who have met the conditions for starting the pumping process.

[0061] 3) Simultaneous setting of the number of stations to be drawn and the number to be arranged:

[0062] Set the maximum number of pumping and drainage stations that can pump water and drain water simultaneously; when the number of pumping stations in operation reaches the maximum, a newly applied pumping station must wait until one of its pumping equipment has finished pumping water before it can obtain a start permit; when the number of drainage stations in operation reaches the maximum, a newly applied drainage station must wait until one of its drainage equipment has finished draining water before it can obtain a start permit.

[0063] 4) List of candidates to be drawn:

[0064] A list of all user sewage collection tanks in a certain pumping zone that have reached the black water and grey water alarm levels. When the number of alarms in this list reaches the conditions for "daily timed start" or "instant start", a "pumping batch" is formed.

[0065] 5) System startup:

[0066] When the pumping station meets the start-up conditions, turn on the vacuum power unit and air compressor power unit of the air power pump station and maintain pressure. If the vacuum pump unit includes an upper water tank and a lower water tank, first determine whether to turn on the heating unit based on the indoor temperature detected by the air temperature sensor, and wait for the indoor temperature to rise to the set temperature. Then, close the upper water tank drain valve and the water ring pump drain valve, turn on the circulating water pump, and wait for the circulating water to be pumped from the lower water tank to the upper water tank and reach the overflow level before turning on the vacuum power unit. Set the pumping station to "running" status.

[0067] 6) Pumping preparation:

[0068] After remotely sending a pumping request to the intelligent monitoring system and obtaining permission, close the positive pressure inlet valve, vent valve, and drain valve of the vacuum pressure pumping equipment, open the negative pressure pumping valve and water inlet valve, connect the pipeline of the zoned vacuum collection network, and wait for the zoned vacuum collection network to reach the specified vacuum level.

[0069] 7) Single-household suction procedure:

[0070] Open the smart suction valve of the designated user, wait for the sewage collection tank of the user at the black water end or gray water end to be emptied, and for all sewage to enter the pumping tank through the zoned vacuum collection pipeline network, then close the user's smart suction valve.

[0071] 8) Draw-out switching:

[0072] When the drainage start conditions set in the drainage mode of the pumping station are met, a pumping end message is sent remotely to the intelligent monitoring system.

[0073] 9) Drainage procedure:

[0074] Once the set drainage start conditions are met, and a drainage request is sent to the intelligent monitoring system and permission is obtained, wait for the compressed air connection pipe to reach the set pressure, close the negative pressure suction valve and water inlet valve, open the vent valve, and wait for the pressure inside the pumping tank to rise to equal the atmospheric pressure outside the tank. Then, close the vent valve and open the drain valve and positive pressure air inlet valve, or leave the vent valve open and start the drainage pump. Sewage is pumped from the pumping tank through the black water drainage connection pipe or gray water drainage connection pipe into the black water drainage main pipe or gray water drainage main pipe, and then into the subsequent sewage treatment and discharge facilities. When the pumping tank reaches the empty liquid level, close the positive pressure air inlet valve, drain valve, and drainage pump, and remotely send a drainage end information to the intelligent monitoring system. When a drainage pump is used and the drainage pump can directly discharge sewage from the pumping tank in a negative pressure state, the water inlet valve does not need to be closed and the vent valve does not need to be opened.

[0075] 10) Automatic batch sampling program:

[0076] After the system starts, it automatically cycles through "pumping preparation - single household pumping procedure - pumping and drainage switching - drainage procedure", completing the pumping of all users in a "pumping and drainage batch" and the drainage according to the settings.

[0077] 11) Drainage termination procedure:

[0078] Send a request to remotely shut down the vacuum power unit and air compressor power unit of the air power pump station, and set the vacuum pressure extraction equipment to a "static" state; if the vacuum pump unit is a water ring vacuum pump unit including an upper water tank and a lower water tank and the indoor temperature is lower than the set temperature, then shut down the circulating water pump, open the upper water tank drain valve and the water ring pump drain valve, wait for the circulating water to be discharged from the upper water tank and the water ring vacuum pump body to the lower water tank, then shut down the heating unit and set the vacuum pressure extraction equipment to a "static" state.

[0079] If only this pumping station is pumping, the vacuum power unit and air compressor power unit will be shut down after receiving a shutdown request; if other pumping stations are pumping, the vacuum power unit and air compressor power unit will be shut down only after all pumping stations have issued shutdown requests.

[0080] The beneficial effects of this invention are: 1. By setting up a vacuum collection pipeline network and vacuum pressure pumping equipment in zones, the length and average burial depth of the vacuum collection pipeline are significantly reduced, the vacuum collection time is greatly shortened, and the defects of low energy density and low long-distance transportation efficiency of "negative pressure air" are compensated for. 2. Multiple vacuum pressure pumping devices are powered by a centralized power pumping station located outside the village, which greatly reduces the number of power equipment, facilitates the operation and maintenance of the system, and keeps the main noise source outside the village. 3. One vacuum pressure pumping device can pump only one type of sewage from one household's black water or grey water at a time, and multiple vacuum pressure pumping devices can perform pumping operations simultaneously, improving collection efficiency. 4. A single-pipe vacuum collection pipeline network can be used to complete the separate collection and treatment of black water and grey water. 5. Active pumping and intermittent operation: the power system is only started when a user's liquid is full and accumulates to a certain amount. After pumping is completed, the power system enters a dormant state, the power equipment does not run, and there is virtually no power consumption. Pumping operations can be scheduled during off-peak electricity hours. When sewage volume is low, the operating interval can be increased, significantly reducing operating costs (real-time pumping can also be set when sewage volume is high). 6. By combining vacuum collection with low-pressure drainage, sewage is pumped out in a "negative pressure zoned and quality-based collection, positive pressure centralized and rapid discharge" manner. This is a low-cost rural domestic sewage drainage system. At the same time, the black and ash separation collection mode not only significantly reduces sewage treatment costs but also provides a foundation for the utilization of black water as fertilizer and the low-cost treatment of ash water. Attached Figure Description

[0081] Figure 1 This is a schematic diagram of a partitioned vacuum pressure drainage system in an embodiment of the present invention;

[0082] Figure 2 This is a schematic diagram of the vacuum power unit in an embodiment of the present invention;

[0083] Figure 3 This is a schematic diagram of a ground-mounted water ring vacuum pump unit in an embodiment of the present invention;

[0084] Figure 4 This is a schematic diagram of a self-cooled water ring vacuum pump unit in an embodiment of the present invention;

[0085] Figure 5 This is a diagram showing the arrangement of the aerodynamic main pipe and drainage main pipe in an embodiment of the present invention;

[0086] Figure 6 This is a schematic diagram of a vacuum pressure extraction device with a single drain pipe for pneumatic drainage in an embodiment of the present invention;

[0087] Figure 7 This is a schematic diagram of the vacuum pressure extraction device with dual drainage pipes for pneumatic drainage in an embodiment of the present invention;

[0088] Figure 8This is a schematic diagram of the vacuum pressure extraction device with a water pump and dual drainage pipes in an embodiment of the present invention.

[0089] Figure 9 This is a schematic diagram of a single-pipeline zoned vacuum collection pipeline network in an embodiment of the present invention;

[0090] Figure 10 This is a schematic diagram of a dual-pipeline partitioned vacuum collection pipeline network in an embodiment of the present invention;

[0091] Figure 11 This is a schematic diagram of the user sewage collection unit in an embodiment of the present invention;

[0092] Figure 12 This is a schematic diagram of the intelligent control system in an embodiment of the present invention;

[0093] Figure 13 This is a schematic diagram of the integrated air-powered pump station in an embodiment of the present invention;

[0094] Figure 14 This is a schematic diagram of the integrated vacuum pressure extraction device in an embodiment of the present invention;

[0095] Figure 15 This is a schematic diagram of a dual-drainage-mains vacuum pressure drainage system in an embodiment of the present invention;

[0096] Figure 16 This is a schematic diagram of a dual-tank vacuum pressure extraction device in an embodiment of the present invention;

[0097] Figure 17 This is a schematic diagram of a two-way valve user sewage collection unit in an embodiment of the present invention;

[0098] Figure 18 This is a schematic diagram of a single drain manifold vacuum pressure drainage system in an embodiment of the present invention;

[0099] Figure 19 This is a schematic diagram of an integrated vacuum pressure drainage pump station in an embodiment of the present invention;

[0100] Figure 20 This is a flowchart of the drainage method in an embodiment of the present invention;

[0101] Figure 21 This is a schematic diagram of a micro-controlled negative pressure pneumatic angle valve in an embodiment of the present invention;

[0102] Figure 22 This is a schematic diagram of the buoyancy-isolated negative pressure suction device in an embodiment of the present invention;

[0103] Figure 23 This is a schematic diagram of the combined valve well user sewage collection unit in an embodiment of the present invention;

[0104] Figure 24This is a schematic diagram of a ground-mounted water ring vacuum pump unit station in a high-altitude and cold region, as described in this invention.

[0105] Figure 25 This is a schematic diagram of the above-ground installation of the intelligent suction valve in an embodiment of the present invention;

[0106] Figure 26 This is a schematic diagram of the water-blocking valve in an embodiment of the present invention;

[0107] Figure 27 This is a schematic diagram of a three-position three-way valve with an intelligent drive device in an embodiment of the present invention;

[0108] Figure 28 This is a schematic diagram of the pole-type multi-point liquid level acquisition device in an embodiment of the present invention;

[0109] Figure 29 This is a schematic diagram of a negative pressure suction device with a liquid level acquisition device in an embodiment of the present invention.

[0110] In the diagram: 1. Pneumatic pump station; 2. Vacuum pressure extraction equipment; 3. User sewage collection unit; 4. Pneumatic main pipe; 5. Zoned vacuum collection network; 6. Drainage main pipe; 7. Intelligent monitoring system; 8. Sewage subsequent treatment and discharge facilities; 11. Vacuum power unit; 12. Compressed air power unit; 13. Vacuum power main pipe; 14. Compressed air main pipe; 15. Power control unit; 16. Black water drainage main pipe; 17. Grey water drainage main pipe; 18. Black water drainage connection pipe; 19. Grey water drainage connection pipe; 20. Pump station enclosure structure; 21. Vacuum power connection pipe; 22. Compressed air connection pipe; 23. Centralized black water storage and treatment facility; 24. Centralized grey water treatment and discharge facility; 25. Vacuum collection main pipe; 26. 27. Vacuum collection branch pipe; 28. Black water main pipe; 29. ​​Grey water main pipe; 30. Black water branch pipe; 31. Grey water branch pipe; 32. Vacuum generator; 33. Bypass pipe; 34. Regulating tank maintenance port; 35. User sewage collection tank; 36. Valve well; 37. Vacuum suction pipe; 38. Intelligent suction valve; 39. Collection tank level sensor; 40. User control unit; 41. User sewage discharge inlet; 42. Filter layer; 43. Baffle plate; 44. Flow pipe; 45. Suction faucet; 46. Collection tank inspection port; 47. Valve well maintenance port; 48. Suction valve; 49. Intelligent actuator; 50. Suction tank; 51. Negative pressure air extraction pipe; 52. Positive pressure air inlet pipe; 53. Negative pressure water inlet pipe; 54. Positive pressure drainage pipe 55. Negative pressure suction valve; 56. Positive pressure intake valve; 57. Vent valve; 58. Negative pressure water inlet valve; 59. Drain valve; 60. Tank pressure sensor; 61. Pumping tank level sensor; 62. Inlet pressure reducing valve; 63. Drain check valve; 64. Water inlet sensor; 65. Pumping control unit; 66. Pumping equipment housing; 67. Pumping station inspection port; 68. Equipment maintenance port; 69. Drain pump; 70. Fixture; 71. Vacuum pump unit; 72. Adjusting filter tank; 73. Negative pressure intake pipe; 74. Negative pressure intake valve; 75. Inlet connecting pipe; 76. Inlet check valve; 77. Exhaust connecting pipe; 78. Negative pressure sensor; 79. Waste gas treatment device; 80. Waste gas discharge pipe; 81. Water ring vacuum pump; 82. Water replenishment. Pipes; 83. Vacuum pump discharge pipe; 84. Upper water tank; 85. Lower water tank; 86. Circulating water pump; 87. Water inlet pipe; 88. Overflow pipe; 89. Vent pipe; 90. Upper water tank vent valve; 91. Water ring pump vent valve; 92. Water tank level sensor; 93. Water temperature sensor; 94. Air temperature sensor; 95. Bypass check valve; 96. Server; 97. Internet of Things platform; 98. Circulating water tank; 99. Cooling circulating pump; 100. Cooling circulating water pipe; 101. Reversing valve; 102. Sewage pipe; 103. Clean water inlet; 104. Sprinkler layer; 105. Water tank vent; 106. Water tank inspection port; 107. Water tank water level line; 108. Filter bag; 109. Drainage inspection well; 110. Municipal drainage pipe;111. Ventilation inlet pipe; 112. Ventilation exhaust pipe; 113. Maintenance port for waste gas treatment device; 114. Monitoring room; 115. Cable conduit; 116. Collection zone; 117. Pneumatic valve air supply pipe; 118. Air supply pipe pressure reducing valve; 119. Black water inlet pipe; 120. Grey water inlet pipe; 121. Heating unit; 122. Drain pipe; 123. Ground line; 124. Frozen soil line; 125. Equipment foundation; 126. Inspection port well shaft; 127. Buried valve box; 128. Through-hole connector; 129. Buoyancy-isolated negative pressure suction device; 130. Y-type valve body; 131. Water inlet bend 132. Outlet elbow; 133. Concave base; 134. Convex top cover; 135. Sealing gland; 136. Valve stem; 137. Sealing ring; 138. Diaphragm; 139. Valve stem nut; 140. Pressure plate; 141. Compression spring; 142. Base air inlet / outlet; 143. Air extraction / discharge nozzle; 144. Air extraction / discharge short pipe; 145. Two-position three-way solenoid valve; 146. Air priming check valve; 147. Negative pressure air priming pipe; 148. Negative pressure valve controller; 149. Fixed bracket; 150. Faucet housing; 151. Suction pipe interface; 152. Grille inlet; 153. 154. Pressure balance pipe interface; 155. Weir; 156. Pumping short pipe; 157. Pressure balance pipe; 158. Flow hole; 159. Fixing bolt; 160. Hollow connecting column; 161. Sealing gasket; 162. Above-ground valve box; 163. Negative pressure air nozzle; 164. Water shut-off valve; 165. Upper valve body; 166. Lower valve body; 167. Sealing ring; 168. Float ball; 169. Pumping chamber; 170. Grille air inlet; 171. T-type three-way ball valve; 172. Actuator chassis; 173. Valve cover; 174. Gear motor; 175. Motor bracket; 176. Coupling 176. Three-way valve controller; 177. Valve position sensor; 178. Immersion electrode; 179. Rust-proof bolt; 180. Waterproof connector; 181. Downward flange; 182. Sealing gasket; 183. Paddle; 184. Valve shaft; 185. Gear motor shaft; 186. Actuator bracket; 187. Three-way valve inlet; 188. Three-way valve outlet; 189. Sealing ring; 190. Sensor support rod; 191. Liquid level switch; 192. Protective cylinder; 193. Sensor mounting leg; 194. Fixing bracket; 195. Liquid level device mounting bracket; 196. Spray head. Detailed Implementation

[0111] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0112] Example 1

[0113] like Figure 1As shown, this embodiment provides a zoned vacuum pressure drainage system, including an air-powered pump station 1, an air-powered main pipe 4, a drainage main pipe 6, a vacuum pressure extraction device 2, a zoned vacuum collection network 5, a user sewage collection unit 3, and an intelligent monitoring system 7. The air-powered main pipe 4 is connected to the air-powered pump station 1, and at least one vacuum pressure extraction device 2 is connected to the air-powered main pipe 4. The zoned vacuum collection network 5 is connected to the vacuum pressure extraction device 2, and at least one user sewage collection unit 3 is connected to the zoned vacuum collection network 5. The drainage main pipe 6 is connected to the vacuum pressure extraction device 2 and to a sewage subsequent treatment and discharge facility 8. The user sewage collection unit 3 is connected to a user sewage discharge pipe. The intelligent monitoring system 7 is connected to the air-powered pump station 1, the vacuum pressure extraction device 2, and the user sewage collection unit 3.

[0114] The zoned vacuum pressure drainage system uses positive and negative pressure gases as the medium to power the drainage system. Through a negative pressure-based zoned and quality-based collection and a positive pressure-based centralized and rapid discharge mode, it achieves low-cost collection and rapid discharge of rural sewage. The zoned vacuum pressure drainage system mainly consists of seven components: an air-powered pump station (1), an air-powered main pipe (4), a main drainage pipe (6), vacuum pressure extraction equipment (2), a zoned vacuum collection network (5), user sewage collection units (3), and an intelligent monitoring system (7). These seven components are described in detail below.

[0115] I. Air-powered pump station 1

[0116] like Figure 5 As shown, the pneumatic pump station 1 includes a pump station enclosure structure 20 and a vacuum power unit 11, an air compressor power unit 12 and a power control unit 15 installed in the pump station enclosure structure 20. The vacuum power unit 11 and the air compressor power unit 12 are connected to the power control unit 15, and the power control unit 15 is connected to the intelligent monitoring system 7.

[0117] The vacuum power unit 11 and the air power unit 12 are installed within the pump station enclosure structure 20. The power control unit 15 is installed on the ground inside or outside the equipment and is wiredly connected to the vacuum power unit 11 and the air power unit 12, and wiredly or wirelessly connected to the vacuum pressure extraction equipment 2 and the intelligent monitoring system 7. The air compressor in the air power unit 12 is a piston air compressor.

[0118] like Figure 2As shown, in this embodiment, the vacuum power unit 11 includes a vacuum pump unit 71, a regulating filter tank 72, a negative pressure inlet pipe 73, an inlet connecting pipe 75, an exhaust connecting pipe 77, and a negative pressure sensor 78; the regulating filter tank 72 has a filter layer 42 inside, and a negative pressure inlet pipe 73 is connected to the regulating filter tank 72 on the inlet side of the filter layer 42. The negative pressure inlet pipe 73 is connected to the vacuum power main pipe 13, and a negative pressure inlet valve 74 may or may not be provided on the negative pressure inlet pipe 73; the filter... The regulating filter tank 72 on the outlet side of layer 42 is connected to the inlet of the vacuum pump unit 71 via an inlet connecting pipe 75. An inlet check valve 76 is installed on the inlet connecting pipe 75. An exhaust connecting pipe 77 is connected to the outlet of the vacuum pump unit 71 and is connected to the atmosphere. A negative pressure sensor 78 is installed on the regulating filter tank 72 or the inlet connecting pipe 75. The negative pressure sensor 78, the vacuum pump unit 71, and the negative pressure inlet valve 74 are all connected to the power control unit 15 via wired or wireless connection.

[0119] The vacuum power unit 11 also includes an exhaust gas treatment device 79. The exhaust connection pipe 77 is connected to the air inlet of the exhaust gas treatment device 79, and the air outlet of the exhaust gas treatment device 79 is connected to an exhaust gas discharge pipe 80, which is connected to the atmosphere. The exhaust gas treatment device 79 can be optionally installed. When the exhaust gas treatment device 79 is not installed, the exhaust connection pipe 77 is directly connected to the atmosphere as the final outlet. When the exhaust gas treatment device 79 is installed, the exhaust gas treatment device 79 is equipped with an exhaust gas discharge pipe 80 as the final outlet.

[0120] A maintenance port 34 is provided on the filter tank 72, and the maintenance port 34 is located on the upstream side of the filter layer 42. The vacuum pump unit 71 is a unit composed of a water ring vacuum pump 81, a rotary vane vacuum pump, or other types of vacuum generating equipment. In this embodiment, the vacuum pump unit 71 is a water ring vacuum pump unit.

[0121] The air-powered pump station 1 can be arranged in an above-ground, underground, or combined above-ground and underground configuration. The underground air-powered pump station 1 buries the pump station equipment below the frost line 124 and can use a self-cooled water ring vacuum pump unit. The above-ground air-powered pump station 1 sets the main equipment of the pump station above the ground line 123. In cold regions, winter antifreeze should be considered, and water ring vacuum pump units with upper water tank 84 and lower water tank 85, rotary vane vacuum pump units, dry screw vacuum pump units, or other types of vacuum pump units that meet the requirements can be used.

[0122] In this embodiment, the vacuum pump unit 71 includes two forms: a self-cooled water ring vacuum pump unit and a water ring vacuum pump unit with an upper and lower water tank suitable for high-altitude and cold regions.

[0123] (1) such as Figure 3 and Figure 24 As shown, a ground-mounted water ring vacuum pump unit suitable for high-altitude and cold regions is described. The vacuum pump unit 71 includes a water ring vacuum pump 81, a vacuum pump discharge pipe 83, a water supply pipe 82, an upper water tank 84, a lower water tank 85, a circulating water pump 86, a water supply pipe 87, an overflow pipe 88, an vent pipe 122, a heating unit 121, a water tank level sensor 92, a water temperature sensor 93, and an air temperature sensor 94. The air inlet and outlet of the water ring vacuum pump 81 are respectively connected to the air inlet connection pipe 75 and the vacuum pump discharge pipe. 83. The vacuum pump discharge pipe 83 is connected to the upper water tank 84, and the upper water tank 84 is connected to an overflow pipe 88, which is connected to the lower water tank 85. The water inlet of the water ring vacuum pump 81 is connected to a water supply pipe 82, which is connected to the upper water tank 84. The lower water tank 85 must be located below the frost line 124, and can be located inside or outside the pump station enclosure structure 20 depending on the actual situation. The circulating water pump 86 is located at the bottom of the lower water tank 84. The heating unit 121 is located at a low position inside the pump station enclosure structure 20, and the temperature sensor 94 is located inside the pump station enclosure structure.

[0124] The upper and lower ends of the water inlet pipe 87 are connected to the upper water tank 84 and the circulating water pump 86, respectively. The bottom of the upper water tank 84 is provided with an upper water tank drain valve 90, and the bottom outlet of the water ring vacuum pump 81 is provided with a water ring pump drain valve 91. The upper water tank drain valve 90 and the water ring pump drain valve 91 are connected to the drain pipe 122, which extends into the lower water tank 85. The upper water tank 84 is provided with a water tank level sensor 92 and a water temperature sensor 93. The top of the upper water tank 84 is provided with a water tank exhaust port 105 connected to the exhaust connection pipe 77. The water ring vacuum pump 81, the circulating water pump 86, the upper water tank drain valve 90, the water ring pump drain valve 91, the heating unit 121, the water tank level sensor 92, the water temperature sensor 93, and the air temperature sensor 94 are all wired to the power control unit 15.

[0125] like Figure 24 As shown, the equipment of the vacuum pump unit 71, including the water ring vacuum pump 81, upper water tank 84, upper water tank drain valve 90, water ring pump drain valve 91, heating unit 121, and temperature sensor 94, is installed together with other pneumatic pump station 1 such as regulating filter tank 72 and exhaust gas treatment device 79 in the pump station enclosure structure 20 above the ground line 123. The lower water tank 85 is installed in the soil layer below the frost line below or near the upper water tank 84, and can be installed in the underground space enclosed by the equipment foundation 125.

[0126] The upper end of the overflow pipe 88 is connected to or extends into the upper water tank 84 at a height slightly below the interface between the vacuum pump discharge pipe 83 and the upper water tank 84. The connection point between the water supply pipe 82 and the upper water tank 84 is lower than the height of the upper opening of the overflow pipe 88. The connection point between the water supply pipe 87 and the upper water tank 84 is higher than the height of the upper opening of the overflow pipe 88.

[0127] (2) such as Figure 4 and Figure 13 As shown, a self-cooled water ring vacuum pump unit 71 includes a water ring vacuum pump 81, a vacuum pump discharge pipe 83, a water supply pipe 82, a circulating water tank 98, a cooling circulating pump 99, a cooling circulating water pipe 100, a drain pipe 102, and a water spray layer 104. The circulating water tank 98 has a water spray layer 104 inside, which is a certain distance from both the top of the circulating water tank 98 and the water surface line 107 inside the circulating water tank 98. The water spray layer 104 is made of PVC material used for cooling tower water spraying. One end of the circulating water tank 98... The top of the device is equipped with a water tank vent 105, a clean water inlet 103, and a water tank inspection port 106. The water tank vent 105 is connected to an vent connection pipe 77. The air inlet and outlet of the water ring vacuum pump 81 are connected to the air inlet connection pipe 75 and the vacuum pump discharge pipe 83, respectively. The vacuum pump discharge pipe 83 is connected to the circulating water tank 98 between the water spray layer 104 and the water level line 107 of the water tank, and is located at the other end of the circulating water tank 98 opposite to the water tank vent 105. A water supply pipe 82 is connected to the water supply port of the water ring vacuum pump 81. The water supply pipe 82 is connected to... On the circulating water tank 98 below the water level line 107; one end of the cooling circulating water pipe 100 is connected to the bottom of the circulating water tank 98 below the water level line 107, and the other end of the cooling circulating water pipe 100 is connected to the top of the circulating water tank 98 via a reversing valve 101 (the reversing valve 101 is an L-type three-way ball valve). A spray head 196 pointing to the middle of the water spray layer is provided on the pipe opening of the cooling circulating water pipe 100 at the connection with the circulating water tank 98. The spray head 196 is a duckbill nozzle. The reversing valve 101 is connected to one end of the drain pipe 102. The other end of the sewage pipe 102 passes through the pump station enclosure structure 32 and connects to the atmosphere. A cooling circulation pump 99 is installed on the cooling circulation water pipe 100. The reversing valve 101 determines whether the water pumped by the cooling circulation pump 99 enters the circulating water tank for circulation or is discharged out of the water tank through the sewage pipe 102 to empty the water tank. A water tank level sensor 92 and a water temperature sensor 93 are installed inside the circulating water tank 98. The water ring vacuum pump 81, the cooling circulation pump 99, the water tank level sensor 92, and the water temperature sensor 93 are all connected to the power control unit 15 by wire or wireless means.

[0128] In this embodiment, the pneumatic pump station 1 adopts a combined above-ground and underground form. The equipment consists of three layers: the bottom layer is the equipment layer with the pump station enclosure structure 20, buried below the frost line; the middle layer is the exhaust gas treatment and above-ground / underground traffic connection layer, buried below the ground line, with the portion within the frost layer requiring an additional insulation layer; and the above-ground layer is the monitoring room 114 housing the power control unit 15 and the entrance to the underground passage. See Appendix for details. Figure 13 The exhaust gas treatment device 79 is located on the middle layer, with an exhaust gas treatment device maintenance port 113 at the top. The exhaust gas treatment device maintenance port 113 extends above the ground and is equipped with a sealing cover. The pump station enclosure structure 20 is equipped with an air exchange inlet pipe 111 and an air exchange exhaust pipe 112 with mechanical / natural ventilation functions. The exhaust gas discharge pipe 80, the air exchange inlet pipe 111, and the air exchange exhaust pipe 112 all extend above the ground.

[0129] II. Air Power Main Pipe 4

[0130] like Figure 5 As shown, in this embodiment, the pneumatic main pipe 4 includes a vacuum power main pipe 13, a compressed air main pipe 14, a vacuum power connecting pipe 21, and a compressed air connecting pipe 22; the vacuum power main pipe 13 is connected to the vacuum power unit 11, and at least one vacuum power connecting pipe 21 is connected to the vacuum power main pipe 13, which is connected to the vacuum pressure extraction device 2; the compressed air main pipe 14 is connected to the compressed air power unit 12, and at least one compressed air connecting pipe 22 is connected to the compressed air main pipe 14, which is connected to the vacuum pressure extraction device 2.

[0131] The vacuum power connection pipe 21 and compressed air connection pipe 22 can be selected or omitted depending on the actual situation. When the system has only one vacuum pressure extraction device 2, the vacuum power connection pipe 21 can be integrated with the vacuum power main pipe 13, and the compressed air connection pipe 22 can be integrated with the compressed air main pipe 14. Appropriate pipe accessories (such as maintenance valves) can be installed on each pipe.

[0132] III. Main Drainage Pipe 6

[0133] like Figure 5As shown, in this embodiment, the main drainage pipe 6 includes a black water drainage main pipe 16, a grey water drainage main pipe 17, a black water drainage connecting pipe 18, and a grey water drainage connecting pipe 19; the wastewater subsequent treatment and discharge facility 8 includes a centralized black water storage and treatment facility 23 and a centralized grey water treatment and discharge facility 24; the black water drainage main pipe 16 is connected to the centralized black water storage and treatment facility 23, and at least one black water drainage connecting pipe 18 is connected to the black water drainage main pipe 16, which is connected to a vacuum pressure extraction device 2; the centralized grey water treatment and discharge facility 24 is connected to the grey water drainage main pipe 17, and at least one grey water drainage connecting pipe 19 is connected to the grey water drainage main pipe 17, which is connected to a vacuum pressure extraction device 2;

[0134] or,

[0135] The main drainage pipe 6 includes a black water drainage main pipe 16 and a black water drainage connecting pipe 18. At least one black water drainage connecting pipe 18 is connected to the black water drainage main pipe 16, and the black water drainage connecting pipe 18 is connected to the vacuum pressure pumping device 2.

[0136] In this embodiment, the wastewater subsequent treatment and discharge facility 8 can be composed of a drainage inspection well 109 and a township municipal drainage pipe 110. In this configuration, the drainage inspection well 109 is connected to the township municipal drainage pipe 110; the black water drainage main pipe 16 is connected to the drainage inspection well 109. Alternatively, the wastewater subsequent treatment and discharge facility 8 can also be a centralized treatment device or facility for mixed village wastewater. The specific choice can be made according to the actual situation to better meet the actual needs.

[0137] In this embodiment, the system is equipped with two parallel black water drainage mains 16 and grey water drainage mains 17, which are connected to each vacuum pressure extraction device 2 via black water drainage connecting pipe 18 and grey water drainage connecting pipe 19, respectively. A centralized black water storage and treatment facility 23 and a centralized grey water treatment and discharge facility 24 are installed at the end of the drainage mains 6. The end of the black water drainage mains 16 is connected to the centralized black water storage and treatment facility 23, and the end of the grey water drainage mains 17 is connected to the centralized grey water treatment and discharge facility 24.

[0138] In this embodiment, either the black water main drain pipe 16 and the black water drainage connecting pipe 18, or the grey water main drain pipe 17 and the grey water drainage connecting pipe 19, can be selected and installed according to the actual situation. When the system only collects one type of wastewater (black water, grey water, or mixed water), only one black water main drain pipe 16 and the black water drainage connecting pipe 18, or one grey water main drain pipe and the grey water drainage connecting pipe 19, can be installed. When the system has only one pumping tank 50, the black water main drain pipe 16 can be integrated with the black water drainage connecting pipe 18, and the grey water main drain pipe 17 can be integrated with the grey water drainage connecting pipe 19. Corresponding pipe accessories (such as inspection valves) can be installed on each pipe.

[0139] The pressure head generated by the air pressure in the compressed air main 14 must be greater than the total head required by the black water drainage main 16 and the grey water drainage main 17. The air pressure in the compressed air main 14 is generally controlled below 1 MPa to keep the drainage main 17, black water drainage main 16, and grey water drainage main 17 within the low-pressure pipeline range. Therefore, when the lengths of the drainage main 17, black water drainage main 16, and grey water drainage main 17 are so great that the required total head exceeds the system's drainage capacity, a sewage lifting pump station should be installed. The centralized black water storage and treatment facility 23 uses a centralized anaerobic fermentation storage tank (such as a large three-chamber septic tank). The centralized grey water treatment and discharge facility 24 uses a centralized grey water treatment tank for pretreatment and an artificial wetland for treatment.

[0140] The main drainage pipe 17 or the black water drainage pipe 16 or / and the grey water drainage pipe 17 can also be a gravity drainage pipe or a low-pressure and gravity segmented combined drainage pipe. Inspection wells, sewage lifting pump stations and other pipe ancillary facilities can also be installed on each gravity drainage pipe.

[0141] IV. Vacuum Pressure Extraction Equipment 2

[0142] In this embodiment, the vacuum pressure extraction device 2 includes two forms, as detailed below:

[0143] (1) such as Figure 6 and Figure 7 As shown, the vacuum pressure extraction device 2 is a "negative pressure collection - compressed air positive pressure discharge" system. The vacuum pressure extraction device 2 includes an extraction tank 50, a negative pressure extraction pipe 51, a positive pressure air inlet pipe 52, a negative pressure water inlet pipe 53, and two positive pressure drain pipes 54 for black and grey water. Figure 7 It includes two positive pressure drainage pipes, 54, for both black and grey water. Figure 6The system includes only one positive pressure drain pipe 54, a venting device, and a pumping control unit 65. The top of the pumping tank 50 is connected to a negative pressure suction pipe 51, a positive pressure air inlet pipe 52, a venting device, and at least one negative pressure water inlet pipe 53. A water-blocking valve 163 may or may not be installed on the pipe opening inside the tank at the connection point between the negative pressure suction pipe 51 and the pumping tank 50. The negative pressure suction pipe 51 is connected to the vacuum power main pipe 13 via a vacuum power connection pipe 21. A negative pressure suction valve 55 is installed on the negative pressure suction pipe 51, and a water inlet sensor may or may not be installed depending on the actual situation. The positive pressure air inlet pipe 52 is connected to... Compressed air connection pipe 22 is connected to compressed air main pipe 14. Positive pressure inlet pipe 52 is equipped with positive pressure inlet valve 56 and inlet pressure reducing valve 62. Negative pressure water inlet pipe 53 is connected to the zoned vacuum collection network 5. Negative pressure water inlet pipe 53 is equipped with inlet valve 58 (when there is only one negative pressure water inlet pipe 53, the inlet valve 58 can be a one-way valve and is not connected to the extraction control unit 65) or with inlet valve 58 and inlet sensor 64. Positive pressure drain pipe 54 extends from the top of extraction tank 50 to the bottom of extraction tank 50. Two positive pressure drain pipes 54 (e.g., ...) Figure 7 (As shown) are connected to the black water drainage main pipe 16 and the gray water drainage main pipe 17 respectively via black water drainage connection pipe 18 and gray water drainage connection pipe 19; each of the positive pressure drainage pipes 54 is equipped with a drainage check valve 63 and may or may not be equipped with a drainage valve 59; a tank pressure sensor 60 is installed on the top of the extraction tank 50, and a extraction tank level sensor 61 is installed inside the extraction tank 50.

[0144] In this embodiment, the venting device has two forms: ① A venting device with a vacuum generator, including a venting valve 57, a venting pipe 89, a vacuum generator 32, a bypass pipe 33, and a bypass check valve 95. ② A venting device consisting only of a venting valve 57 and a venting pipe 89. The specific choice can be made according to actual conditions to better meet practical needs. When the vacuum generator 32 is connected to the atmosphere, a silencer can be installed to reduce noise.

[0145] When the venting device is a venting device with a vacuum generator, it includes a venting valve 57, a venting pipe 89, a vacuum generator 32, a bypass pipe 33, and a bypass check valve 95. One end of the venting pipe 89 is connected to the top of the extraction tank 50, and the other end of the venting pipe 89 is connected to the air inlet of the vacuum generator 32. The venting pipe 89 is equipped with a venting valve 57. The suction port of the vacuum generator 32 is connected to the bypass pipe 33. The bypass pipe 33 is connected to the negative pressure water inlet pipe 53 and is located upstream of the negative pressure water inlet valve 58. The bypass pipe 33 is equipped with a bypass check valve 95. The exhaust port of the vacuum generator 32 is connected to the atmosphere. When the exhaust port of the vacuum generator 32 is connected to the atmosphere, a silencer can be installed to reduce noise.

[0146] When the venting device consists only of a venting valve 57 and a venting pipe 89, one end of the venting pipe is connected to the top of the pumping tank, and the other end is connected to the atmosphere or connected to the atmosphere via a silencer. The venting valve is installed on the venting pipe.

[0147] The negative pressure air extraction valve 55, positive pressure air inlet valve 56, water inlet valve 58, water inlet sensor 64, drain valve 59, vent valve 57, tank pressure sensor 60, and pumping tank level sensor 61 are all connected to the pumping control unit 65. The pumping control unit 65 is connected to the power control unit 15, the user control unit 40, and the intelligent monitoring system 7.

[0148] In this embodiment, the outlet pressure of the intake pressure reducing valve 62 is set according to the larger of the following two pressure heads:

[0149] ① The sewage is discharged from the pumping tank at a certain flow rate through the black water drainage connection pipe 18 and the black water drainage main pipe 16 to the black water centralized storage and treatment facility 23, which requires the required pressure head.

[0150] ② The wastewater is discharged from the pumping tank at a certain flow rate through the grey water drainage connection pipe 19 and the grey water drainage main pipe 17 to the grey water centralized treatment and discharge facility 24, which requires the required pressure head.

[0151] Because the distance and elevation difference between each vacuum pressure pumping device 2 and the subsequent sewage treatment and discharge facility are different, the head loss along the way and in the local area are also different. Therefore, the outlet pressure of the air inlet pressure reducing valve 62 of each vacuum pressure pumping device 2 should be set separately.

[0152] In this embodiment, after positive pressure drainage is completed, the vent valve 57 is opened, and the compressed air in the extraction tank 50 enters the vacuum generator 32 through the air inlet and is discharged at high speed from the outlet of the vacuum generator 32, or discharged at high speed from the outlet of the vacuum generator 32 through the exhaust silencer. When the vacuum degree generated in the vacuum generator 32 is higher than the vacuum degree of the partitioned vacuum collection network 5 and can overcome the resistance of the bypass check valve 95, the air in the partitioned vacuum collection network 5 will be drawn into the vacuum generator 32 through the negative pressure air inlet pipe 73 and the bypass pipe 33, and will be carried out at high speed from the outlet of the vacuum generator 32 by the compressed air in the extraction tank 50, thereby improving the vacuum degree of the vacuum collection network and realizing the energy recovery of waste compressed air. After the negative pressure suction of user sewage is completed and before drainage is prepared, the vent valve 57 is opened, and atmospheric air enters the vacuum generator 32 from the outlet of the vacuum generator 32 and enters the extraction tank 50 through the vent valve 57, finally achieving pressure balance between the outside and inside of the tank.

[0153] like Figure 7As shown, the vacuum pressure extraction device 2 also includes a pneumatic valve supply pipe 117 and a supply pipe pressure reducing valve 118. The pneumatic valve supply pipe 117 is connected to the positive pressure inlet pipe 52 and is located upstream of the positive pressure inlet valve 56. The pneumatic valve supply pipe 117 is equipped with the supply pipe pressure reducing valve 118. In this embodiment, the valves of the vacuum pressure extraction device 2, such as the negative pressure extraction valve 55, the positive pressure inlet valve 56, the negative pressure water inlet valve 58, the drain valve 59, and the vent valve 57, are all pneumatic valves. They are connected to the pneumatic valve supply pipe 117 after the supply pipe pressure reducing valve 118 via air pipes. The pneumatic valve supply pipe 117 provides air power for the opening and closing of the pneumatic valves. Among them, the positive pressure inlet valve 56 is a single-acting normally closed pneumatic valve. When there is no pressure or insufficient pressure in the compressed air connection pipe 22, the spring in the pneumatic actuator pushes the piston to close the valve. The outlet pressure of the air supply pipe pressure reducing valve 118 is set according to the air source pressure requirements of the pneumatic valve used.

[0154] Vacuum pressure extraction device 2 is buried underground at the end of the zoned vacuum collection pipeline network 5. See appendix. Figure 14 The main body of the underground vacuum pressure extraction equipment 2 is buried below the frost layer. The extraction control unit 65 is set in a waterproof box above the ground. One of the two hollow support legs serves as the ventilation inlet pipe 111 and the other serves as the cable pipe 115. The ventilation inlet pipe 111 and the ventilation exhaust pipe 112 both extend above the ground and have rainproof function. The air inlet of the ventilation inlet pipe 111 is set under or inside the waterproof shell of the extraction control unit 65.

[0155] (2) Figure 8As shown, a vacuum pressure extraction device 2, consisting of "negative pressure collection - positive pressure discharge from sewage pump," is used. The vacuum pressure extraction device 2 includes an extraction tank 50, a negative pressure extraction pipe 51, a negative pressure water inlet pipe 53, a positive pressure drain pipe 54, a venting device, and an extraction control unit 65. The top of the extraction tank 50 is connected to the negative pressure extraction pipe 51, the venting device, and at least one negative pressure water inlet pipe 53. A water-blocking valve 163 may or may not be installed on the inner port of the negative pressure extraction pipe 51 at the end connected to the extraction tank 50. The negative pressure extraction pipe 51 is connected to the main vacuum power pipe 13 via a vacuum power connection pipe 21, and a negative pressure extraction valve 55 is installed on the negative pressure extraction pipe 51. The negative pressure water inlet pipe 53 is connected to the zoned vacuum collection network 5, and a negative pressure water inlet valve 58 and a water inlet sensor 64 are installed on the negative pressure water inlet pipe 53. When there is only one negative pressure water inlet pipe 53, the negative pressure water inlet valve 58 can... A one-way valve is used; at least one positive pressure drain pipe 54 is connected to the bottom of the extraction tank 50. The positive pressure drain pipe 54 is connected to the black water drainage main pipe 16 or the gray water drainage main pipe 17 via the black water drainage connection pipe 18 or the gray water drainage connection pipe 19. The positive pressure drain pipe 54 is equipped with a drain valve 59, a drain pump 69, and a drain check valve 63. A tank pressure sensor 60 is installed on the top of the extraction tank 50, and a tank level sensor 61 is installed inside the extraction tank 50. The venting device includes a vent pipe 89 and a vent valve 57. One end of the vent pipe 89 is connected to the top of the extraction tank 50, and the other end of the vent pipe 89 is connected to the atmosphere. The vent pipe 89 is equipped with a vent valve 57. When the vent pipe 89 is connected to the atmosphere, a silencer can be installed to reduce noise. When the drainage pump can directly discharge sewage from the extraction tank 50 under negative pressure, the venting device may not be required.

[0156] The negative pressure air extraction valve 55, negative pressure water inlet valve 58 (when the negative pressure water inlet valve 58 is a one-way valve, it is not connected to the extraction and discharge control unit 65), water inlet sensor 64, drain valve 59, drain pump 69, tank pressure sensor 60, extraction and discharge tank level sensor 61, and vent valve 57 are all connected to the extraction and discharge control unit 65. The extraction and discharge control unit 65 is connected to the power control unit 15, the user control unit 40, and the intelligent monitoring system 7.

[0157] In this embodiment, the water-blocking valve 163 (e.g.) Figure 26The system includes an upper valve body 164, a lower valve body 165, a float 167, and a sealing ring 166. The upper valve body 164 has an internal through hole that connects the upper and lower parts. The diameter of the lower opening of the internal through hole is smaller than the diameter of the float 167. The upper end of the upper valve body 164 has an interface for connecting to the negative pressure suction pipe 51, and the lower end has an outward-facing upper valve body flange. The outer side of the upper valve body flange has an external thread of the upper valve body. The bottom surface of the upper valve body flange is connected to the sealing ring 166. The center of the sealing ring 166 has a circular hole, the diameter of which is slightly smaller than the diameter of the lower opening of the internal through hole. The lower valve body 165 is cup-shaped, with grille air inlets 168 around its perimeter, and an outward-facing lower valve body flange at the top. The valve body flange has an upward-facing inner threaded ring along its outer edge. The inner diameter of the inner threaded ring is the same as the outer diameter of the outer thread of the upper valve body. The inner diameter and inner height of the lower part of the lower valve body 165 (the part below the flange of the lower valve body) are both greater than the diameter of the float 167. The float 167 is placed inside the lower valve body 165. The density of the float 167 is less than the density of the sewage. The flange of the lower valve body presses against the outer edge of the bottom surface of the sealing ring 166. The upper valve body 164 and the lower valve body 165 are fixed by threaded connection. The sealing ring 166 is pressed and fixed between the upper valve body 164 and the lower valve body 165. The water-blocking valve 163 is set inside the pumping tank 50, and its upper opening is connected to the opening of the negative pressure suction pipe 51 that extends into the pumping tank 50.

[0158] In the event of manual suction or a malfunctioning level sensor, when the liquid level in the suction tank 50 rises to a certain height, the float 167 rises with the liquid level and, under the suction force of the negative pressure suction pipe 51, blocks the central hole of the sealing ring 165, thus preventing sewage from entering the negative pressure suction pipe 51. After the venting valve 57 is opened or the pressure in the pipeline network is reduced by waiting for the valve to be opened at the farmer's end, the suction tank 50 drains water. The buoyancy of the sewage in the tank is eliminated, and the float 167 falls to the bottom of the lower valve body 165 under the action of gravity, and the vacuum collection system returns to normal.

[0159] In this embodiment, when the bottom of the pumping tank 50 is higher than the gravity drainage main pipe 6 or the black water drainage main pipe 16 or / and the grey water drainage main pipe 17, the drainage pump 69 and the drainage check valve 63 may not be installed. The positive pressure drainage pipe 54 is connected to the gravity black water drainage main pipe 16 and / or the gravity grey water drainage main pipe 17 via the gravity black water drainage connecting pipe and / or the gravity grey water drainage connecting pipe. A drainage valve 59 is installed on the positive pressure drainage pipe 54.

[0160] During actual pumping operations, the vent valve 57 and the drain valve 59 are opened, and the sewage is discharged directly downward from the positive pressure drain pipe 54 at the bottom of the pumping tank under its own weight and discharged into the gravity black water drainage connection pipe and / or gravity gray water drainage connection pipe into the gravity black water drainage main pipe 16 and / or gravity gray water drainage main pipe 17. Alternatively, it can be discharged directly from the positive pressure drain pipe 54 at the bottom of the pumping tank into the nearby underground collection well (pipeline auxiliary facility) or sewage subsequent treatment and discharge facility 8.

[0161] In this embodiment, the vacuum pressure extraction device 2 also includes an extraction device housing 66, and an extraction tank 50 is disposed inside the extraction device housing 66 and connected by a fastener 70. The extraction tank 50 is provided with an extraction tank inspection port 67, and the extraction device housing 66 is provided with an equipment maintenance port 68. The other end of the negative pressure water inlet pipe 53 is connected to the main pipe of the zoned vacuum collection network 5. One end of the positive pressure drain pipe 54 is connected to the extraction tank 50 from the bottom of the tank body, and the other end passes through the extraction device housing 66 and is connected to the black water drainage main pipe 16 or the gray water drainage main pipe 17 via the black water drainage connection pipe 18 or the gray water drainage connection pipe 19. The extraction control unit 65 is disposed inside the extraction device housing 66 or near the ground outside the extraction device housing 66. Valves such as the negative pressure extraction valve 55, the positive pressure air inlet valve 56, the water inlet valve 58, the drain valve 59, and the vent valve 57 are electric valves, or they can be manually controlled valves or electric valves with manual control functions. The vacuum pressure extraction device 2 is buried underground at the end of the zoned vacuum collection pipeline network 5. The air inlet pressure reducing valve 62, the drain check valve 63, and the water inlet sensor 64 can be selected or not according to the actual situation.

[0162] In this embodiment, after the negative pressure exhaust pipe 51, positive pressure air inlet pipe 52, negative pressure water inlet pipe 53, and positive pressure drain pipe 54 enter the pump station enclosure structure 20, they are all equipped with manual control valves close to the equipment shell for maintenance or emergency opening and closing.

[0163] V. Zoned Vacuum Collection Piping Network 5

[0164] The partitioned vacuum collection network 5 can be a single-pipe network or a double-pipe network. The specific configuration can be determined based on the actual situation.

[0165] When the partitioned vacuum collection network 5 is a single-pipe network, such as Figure 9As shown, the zoned vacuum collection network 5 includes a vacuum collection main pipe 25, vacuum collection branch pipes 26, and vacuum collection service pipes 27. The vacuum collection main pipe 25 is connected to the vacuum pressure extraction device 2. At least one vacuum collection branch pipe 26 is connected to the vacuum collection main pipe 25, and at least one vacuum collection service pipe 27 is connected to the vacuum collection branch pipe 26. The vacuum collection service pipe 27 is connected to the user sewage collection unit 3. When the user sewage collection units 3 on the same vacuum collection main pipe 25 are linearly distributed, the vacuum collection service pipe 27 can also be directly connected to the vacuum collection main pipe 25 (i.e., no branch pipe is required).

[0166] When the partitioned vacuum collection network 5 is a dual-pipe network, such as Figure 10 As shown, the zoned vacuum collection network 5 includes a black water main pipe 28, black water branch pipes 30, black water service pipes 119, grey water main pipe 29, grey water branch pipes 31, and grey water service pipes 120. Both the black water main pipe 28 and the grey water main pipe 29 are connected to the vacuum pressure extraction device 2. At least one black water branch pipe 30 is connected to the black water main pipe 28, and at least one black water service pipe 119 is connected to the black water branch pipe 30. At least one grey water branch pipe 31 is connected to the grey water main pipe 29, and at least one grey water service pipe 120 is connected to the grey water branch pipe 31. Both the black water service pipes 119 and the grey water service pipes 120 are connected to the user sewage collection unit 3. When the user sewage collection units 3 on the same vacuum collection main pipe are linearly distributed, the black water service pipe 119 can also be directly connected to the black water main pipe 28, and the grey water service pipe 120 can also be directly connected to the grey water main pipe 29 (i.e., branch pipes are not required).

[0167] When using a dual-pipe network, the sewage collection unit 3 cannot use a single three-way valve; instead, it should use two two-way valves. For example... Figure 17 As shown, the black water inlet pipe 119 and the grey water inlet pipe 120 are respectively connected to the two two-way intelligent suction valves 38 of the user's sewage collection unit 3 for black water and grey water.

[0168] Each collection zone 116 is equipped with only one vacuum pressure extraction device 2, and each vacuum pressure extraction device 2 is connected to at least one vacuum collection main pipe 25. In other words, a collection zone 116 may be equipped with one or more vacuum collection pipe networks, and one vacuum pressure extraction device 2 may be connected to one or more zone vacuum collection pipe networks 5. The pipe slope of the vacuum collection main pipe 25, vacuum collection branch pipe 26, and vacuum collection service pipe 27 shall not be less than 2‰. When the pipe length is large, a sawtooth or bag-type laying method shall be adopted, and lift bends, inspection pipes, and maintenance valves shall be installed at certain intervals.

[0169] VI. User Wastewater Collection Unit 3

[0170] like Figure 11As shown, in this embodiment, the user sewage collection unit 3 includes at least one user sewage collection tank 35, an intelligent suction valve 38, a vacuum suction pipe 37, a collection tank level sensor 39, and a user control unit 40. The user sewage collection tank 35 has a user sewage inlet 41 connected to a user sewage discharge pipe at its upper part or top. The intelligent suction valve 38 is located above or near the user sewage collection tank 35, and includes at least one inlet connected to a vacuum suction pipe 37. Each vacuum suction pipe 37 extends into the bottom of each user sewage collection tank 35. A collection tank level sensor 39 is installed in the user sewage collection tank 35, and a suction nozzle 45 is installed at the insertion end of each vacuum suction pipe 37. The outlet of the intelligent suction valve 38 is connected to the zoned vacuum collection network 5. The intelligent suction valve 38 and the collection tank level sensor 39 are wired to the user control unit 40, and the user control unit 40 is wired or wirelessly connected to the intelligent monitoring system 7. When the user sewage collection tank 35 is used to collect black water, a filter bag 108 should not be installed inside the user sewage inlet 41 to avoid clogging. When the user sewage collection tank 35 is used to collect grey water, a filter bag 108 can be installed inside the user sewage inlet 41 to prevent large particles of dirt from entering the user sewage collection tank 35. The filter bag is a 20-mesh nylon mesh belt with a diameter of 35cm and a height of 50cm.

[0171] In this embodiment, each user sewage collection unit 3 is equipped with two underground user sewage collection tanks 35, which collect the user's black water (toilet sewage) and grey water (other domestic sewage) respectively. The top of the user sewage collection tank 35 is equipped with a collection tank inspection port 46, and the upper part is equipped with a user sewage discharge port 41. The user sewage discharge ports 41 of the two user sewage collection tanks 35 are respectively connected to the user sewage discharge pipes (two user sewage discharge pipes for black water and grey water). The black water user sewage collection tank 35 adopts a vacuum suction special two-compartment septic tank with baffle 43 and bottom flow pipe 44 (such as patent ZL201920504895.0). The grey water user sewage collection tank 35 adopts a single-compartment septic tank. The sewage discharge port of the single-compartment septic tank is equipped with a filter bag 108. Each user sewage collection tank 35 is equipped with a collection tank liquid level sensor 39, which can collect different liquid level changes in the sewage collection tank. The user sewage collection tank 35 can be, but is not limited to, a single-chamber, two-chamber, or three-chamber septic tank. It can be equipped with a partition 43 inside, and a flow pipe 44 can be installed on the partition 43. The partition 43 and the flow pipe 44 can be in different forms.

[0172] In this embodiment, the valve well includes three types, as detailed below:

[0173] (1) As Figure 11As shown, the valve well 36 is installed above the user sewage collection tank 35, and the intelligent suction valve 38 is installed inside the valve well 36 and located above the user sewage collection tank 35. A valve well maintenance port 47 is provided at the top of the valve well.

[0174] (2) Figure 23 As shown, valve well 36 is a combined valve well, consisting of a buried valve box 127, an inspection port well cylinder 126, and a through-hole connector 128. The inspection port well cylinder 126 is located above the inspection port 46 of the collection tank. The buried valve box 127 is located on one side of the inspection port well cylinder 126 or between the inspection port well cylinders 126 above the black and gray user sewage collection tanks 35. The upper opening of the inspection port well cylinder 126 is basically flush with the upper opening of the inspection port well cylinder 46 and is raised a certain distance above the ground. The buried valve box 127 and the inspection port well cylinder 126 are fixedly connected by the through-hole connector 128. The through-hole connector 128 has a channel in the center to connect the buried valve box 127 on both sides to the inspection port well. The spaces inside the cylinder 127 are interconnected, and the diameter of the channel is larger than the outer diameter of the vacuum suction pipe 37 and the pipe end fittings. The intelligent suction valve 38 is installed inside the buried valve box 127. The upper end of the vacuum suction pipe 37 is provided with an upper horizontal pipe section. After the vacuum suction pipe 37 rises from the user sewage collection tank 35 through the inspection port well cylinder 126 to the vicinity of the through hole connector 128, the upper horizontal pipe section passes through the channel of the through hole connector 128 and extends into the buried valve box 127. Its pipe port is connected to the inlet of the intelligent suction valve 38. The outlet of the intelligent suction valve 38 passes through the side wall of the buried valve box 127 and is connected to the vacuum collection service pipe 27, black water service pipe 119, or grey water service pipe 120 of the zoned vacuum collection pipe network 5.

[0175] (3) Figure 25 As shown, the user sewage collection unit 3 does not have a valve well 36, but uses an above-ground valve box 161. The above-ground valve box 161 is located above the ground line near the user sewage collection tank 35 and is fixed to the wall or a bracket extending from the ground. The intelligent suction valve 38 is located in the valve box 161. The vacuum suction pipe 37 is introduced into the above-ground valve box 161 through a horizontal pipe section and is connected to the inlet of the intelligent suction valve 38 located in the box. The vacuum collection connection pipe 27, black water connection pipe 119, or grey water connection pipe 120 passes through the ground and enters the above-ground valve box 161, and is connected to the outlet of the intelligent suction valve 38. The user control unit is also located in the above-ground valve box 161.

[0176] In this embodiment, the intelligent suction valve 38 consists of a suction valve 48 and an intelligent actuator 49. The intelligent actuator 49 is connected to the valve body and valve shaft / stem of the suction valve 48 and forms an integral unit.

[0177] In this embodiment, the intelligent suction valve comes in several forms:

[0178] (1) The intelligent suction valve 38 is a three-position three-way valve with two inlets and one outlet and an intelligent drive device (such as patent ZL202021179583.6). The suction valve 48 is a T-type three-way ball valve, and the intelligent actuator 49 is a three-position three-way valve intelligent electric drive device.

[0179] The suction valve 48 has three valve positions: "left open", "middle closed" and "right open". Two of its three valve holes, which are on the same axis on both sides, are water inlets and are connected to the vacuum suction pipes 37 in the two sewage collection tanks respectively. The third valve hole is the water outlet and is connected to the vacuum collection service pipe 27 of the zoned vacuum collection network 5. The lower ends of the two vacuum suction pipes 37 are equipped with suction heads 45, which are inserted into the bottom of the black water and gray water user sewage collection tanks 35 respectively.

[0180] like Figure 27 As shown, in this embodiment, the three-way valve adopts a T-type three-way ball valve 170. The valve body is provided with an actuator bracket 186 with a top-sealed groove. The valve ball is rotated so that the side without the hole blocks the third valve hole, which is the "closed" position. The actuator bracket 186 is used to fix the intelligent electric drive device.

[0181] The aforementioned three-position three-way valve intelligent electric drive device includes an actuator chassis 171, a reduction motor 173, a motor bracket 174, a coupling 175, a valve position sensor 177, a three-way valve controller 176, a valve cover 176, and a sealing gasket 182. The actuator chassis 171 has a central hole and downward-facing vertical flanges 181 around its perimeter. The lower edge of the vertical flanges 181 has an outward-facing horizontal flange. The edge of the central hole also has a downward-facing flange. The actuator chassis 171 is connected to the actuator bracket 186 of a T-type three-way ball valve. The valve shaft 187 of the T-type three-way ball valve extends upward through the central hole of the actuator chassis 171 and out of the actuator chassis surface. Above the center hole, the downward-facing flange is inserted into the closed groove at the top of the actuator bracket 186. A base sealing ring 189 is provided in the closed groove, and the downward-facing flange presses against the sealing ring 189. The motor bracket 174 is fixed to the actuator base 171 and has a certain height. A circular hole is provided on the motor bracket 174, and the circular hole is vertically aligned with the center line of the center hole of the actuator base 171. The reduction motor 173 is connected to the motor bracket 174 from above. The reduction motor shaft 185 of the reduction motor 173 extends downward through the circular hole and below the upper surface of the motor bracket 174. The reduction motor shaft 185 is connected to the actuator base 174 from above. The valve shaft 187 of the T-type three-way ball valve is arranged on the same vertical axis and connected by a coupling 175. The valve position sensor 177 and the three-way valve controller 176 are fixed on the motor bracket 174 or the actuator chassis 171. There is at least one valve position sensor 177. The coupling 175 is provided with an extended lever 183, which contacts and connects with the valve position sensor 177. The valve cover 172 is an inverted cup-shaped cover with an outward-facing upper horizontal flange at the lower opening. The size of the lower opening is consistent with the size of the actuator chassis 171. The upper horizontal flange is connected from above to the lower horizontal flange of the actuator chassis 171. A seal is provided between the two horizontal flanges. The upper horizontal flange, sealing gasket 182, and lower horizontal flange are all provided with bolt holes and connected by anti-rust bolts 179. The valve cover 172 encloses the geared motor 173, motor bracket 174, coupling 175, valve position sensor 177, and three-way valve controller 176 inside the valve cover. The three-way valve controller 176 is connected to the valve position sensor 177 and the user control unit 40 (or, the three-way valve controller 176 is connected to the valve position sensor 177, the collection tank level sensor 39, and the user control unit 40). The three-way valve controller 176 can be integrated with the user control unit 40 and placed inside or outside the valve cover 172. The actuator chassis 171 is also provided with a waterproof connector 180 for sealing the wire connections inside and outside the valve cover 172.

[0182] In this embodiment, the inverted cup-shaped valve cover 172 has no holes on its sides and top. When the intelligent suction valve 38 is immersed in water, the pressure of the air sealed inside the valve cover 172 prevents water from entering the valve cover 172. In addition, the high lower flange 181 of the actuator chassis 171 makes it less likely for the electric electronic components located at a higher position inside the valve cover 172 to be contacted by water, thereby greatly improving the anti-immersion damage performance of the intelligent suction valve 38.

[0183] In this embodiment, the actuator chassis 171 is provided with a water-soaking electrode 178 extending downward from the chassis. The top of the water-soaking electrode 178 extends below the lower horizontal flange of the actuator chassis 171. The water-soaking electrode 178 of the actuator chassis 171 is connected to the three-way valve controller 176. When the valve is submerged in water, the top of the water-soaking electrode 178 is submerged in water, and the intelligent controller 176 will issue an alarm message.

[0184] In this embodiment, a temperature sensor is also provided on the three-way valve controller 176 to collect the temperature of the intelligent suction valve 38.

[0185] (2) Figure 21 As shown, the intelligent suction valve 38 is a micro-controlled negative pressure pneumatic angle valve with one inlet and one outlet, the suction valve 48 is a Y-type angle valve, and the intelligent actuator 49 is a micro-controlled negative pressure actuator.

[0186] The Y-type angle valve includes a Y-type valve body 130, a sealing gland 135, and a valve stem 136. The inlet and outlet ends of the Y-type valve body 130 are on the same axis. The inlet end of the Y-type valve body 130 is connected to an inlet elbow 131, and the outlet end is connected to an outlet elbow 132. A short air extraction / venting pipe 144 is provided at the top of the outlet elbow. An obliquely arranged flow passage hole 157 is provided between the inlet and outlet ends. The blocking end of the Y-type valve body 130 is provided with a hollow connecting post 159. A through hole is provided inside the hollow connecting post 159 along its axial direction. The axis of the through hole forms an angle (approximately 45°) with the axis of the inlet end and the axis of the outlet end. The sealing gland 135 is located at the flow passage hole 157. On the upstream side, directly opposite the flow hole 157, a sealing gasket 160 is provided on the sealing cover 135. The front of the sealing cover 135 is pressed tightly against the flow hole 157 or a certain distance away from the flow hole 157. The valve stem 136 is set in the through hole of the hollow connecting column 159 and is slidably connected to the hollow connecting column 159. The inner end of the valve stem 136 is perpendicularly connected to the sealing cover 135, and its outer end extends beyond the hollow connecting column 159. The end is provided with a valve stem nut 139 and a pressure plate 140 with a central hole. There are two pressure plates 140, which are fitted inside the valve stem nut 139 at the outer end of the valve stem. A sealing ring 137 is provided in the gap between the valve stem 136 and the hollow connecting column 159 near the inner surface of the Y-shaped valve housing 130.

[0187] The micro-controlled negative pressure actuator includes a concave base 133, a convex top cover 134, a diaphragm 138, a compression spring 141, a negative pressure air intake pipe 147, a short air extraction / discharge pipe 144, a two-position three-way solenoid valve 145, and a negative pressure valve controller 148. The concave base 133 has base inlet / outlet holes 142 and an outward-facing base flange along its outer edge. Screw holes are provided at regular intervals on the base flange. A central hole, larger in diameter than the outer diameter of the valve stem 136, is located at the center of the concave base 133. The outer end of the valve stem 136 passes through the central hole and extends into the concave base 133. The concave base 133 is fixedly connected to a hollow connecting post 159. A central hole, with a diameter matching that of the valve stem 136, is located at the center of the diaphragm 138. The diaphragm 138 presses against the base flange. Its planar dimensions are consistent with the outer edge of the base flange. The outer edge of the diaphragm 138 is provided with screw holes at regular intervals. The outer end of the valve stem 136 passes through the central hole of the diaphragm. The pressure plates 140 are provided on both sides of the diaphragm 138. The valve stem nut 139 presses the diaphragm 138 tightly and fixes it to the valve stem 136 through the pressure plates 140 on both sides of the diaphragm 138. The convex top cover 134 is provided with a suction / release nozzle 143. Its outer edge is provided with an outward-facing top cover flange. Screw holes are provided on the top cover flange at regular intervals. The dimensions of the outer edge of the top cover flange are the same as the dimensions of the outer edge of the base flange. The diaphragm 138 is positioned between the concave base 133 and the convex top cover 134, and is fastened to the flange of the base. The screw holes of the concave base, the diaphragm, and the convex top cover 134 are vertically connected, and a fixing bolt 158 ​​passes through the vertically connected screw holes to press and fix the diaphragm 138 between the concave base 133 and the convex top cover 134. A vacuum suction chamber is formed between the convex top cover 134 and the diaphragm 138. The cavity formed between the concave base 133 and the diaphragm 138 is connected to the atmosphere through the base air inlet and outlet port 142. 2. Multiple valves can be provided. The base air inlet and outlet holes 142 can also serve as inspection holes for the diaphragm 138 and drainage holes (the drainage holes need to be located at the lower position of the concave base 133). The diaphragm 138 can move back and forth along the axis of the valve stem 136 between the concave base 133 and the convex top cover 134 with a certain range. The compression spring 141 is located in the vacuum suction chamber and one end is connected to the inner surface of the center of the convex top cover 134 from the middle part. The other end is connected to the outer end of the valve stem 136 or to the outer end of the valve stem 136 through the pressure plate 140. The compression spring 141 is in a compressed state.One end of the negative pressure air intake pipe 147 is connected to the negative pressure air intake nozzle 162 on the water outlet elbow 132, and the other end is connected to the two-position three-way solenoid valve 145. One end of the air extraction / discharge short pipe 144 is connected to the air extraction / discharge nozzle 143, and the other end is connected to the two-position three-way solenoid valve 145. An air intake check valve 146 is provided on the negative pressure air intake pipe 147. The air inlet P of the two-position three-way solenoid valve 145 is connected to the air extraction / discharge nozzle 143 via the air extraction / discharge short pipe 144, the air outlet A is connected to the negative pressure air intake nozzle 162 via the negative pressure air intake pipe 147, and the exhaust port R is connected to the atmosphere. The negative pressure valve controller 148 is wiredly connected to the two-position three-way solenoid valve 145 and the user control unit 40 (or, the negative pressure valve controller 148 is wiredly connected to the two-position three-way solenoid valve 145, the collection tank level sensor 39, and the user control unit 40). The negative pressure valve controller 148 can also be integrated with the user control unit 40. A fixing bracket 149 is fixed on the concave base 133, and the two-position three-way solenoid valve 145 is fixed on the fixing bracket 149 or is housed together with the negative pressure valve controller 148 and / or the user control unit 40 within a waterproof housing. The two-position three-way solenoid valve 145 can also be other valves capable of performing the same function.

[0188] The inlet elbow 131 is connected to the upper end of the vacuum suction pipe 38, and the outlet elbow 132 is connected to the vacuum collection inlet pipe 27, black water inlet pipe 119, or grey water inlet pipe 120 of the zoned vacuum collection network.

[0189] (3) The intelligent suction valve 38 can also be other valves that can be actively controlled to open and close.

[0190] In this embodiment, during actual operation, the vacuum level required to activate the micro-controlled negative pressure pneumatic angle valve is lower than the minimum vacuum level set by the vacuum collection network 5. When the vacuum level of the partitioned vacuum collection network 5 reaches the vacuum level required to activate the micro-controlled negative pressure pneumatic angle valve, the intelligent control system 7 issues an opening command, and the two-position three-way solenoid valve 145 is activated, positioned to connect the outlet port A and the inlet port P. The vacuum suction overcomes the resistance of the compression spring 141, the diaphragm 138, and the priming check valve 146, drawing air out of the vacuum suction chamber. The diaphragm 138 drives the valve stem 136 to open the micro-controlled negative pressure pneumatic angle valve. After the sewage is pumped out, air enters the vacuum collection inlet pipe 27 from the user's sewage collection tank 35, causing a significant drop in the vacuum level within the vacuum pipe. At this point, the bleed check valve 146 prevents this drop in vacuum level, and the valve remains open. After the pumping process is complete, the intelligent control system 7 issues a valve-closing command, activating the two-position three-way solenoid valve 145, which connects the exhaust port R to the inlet port P. Atmospheric air enters through the exhaust port R of the two-position three-way solenoid valve 145, passes through the bleed / release short pipe 144, and enters the vacuum suction chamber. The compression spring 141 resets, and the valve closes. Since the two-position three-way solenoid valve 145 can be driven with relatively low-voltage DC power, it can be powered by a regular battery or a miniature solar cell.

[0191] The inlet elbow 131 is connected to the upper end of the vacuum suction pipe 38, and the outlet elbow 132 is connected to the vacuum collection inlet pipe 27, black water inlet pipe 119, or grey water inlet pipe 120 of the zoned vacuum collection network.

[0192] In this embodiment, the suction nozzle uses a sump cover that only separates large particles of dirt (such as...). Figure 26 Remove the float) or use a negative pressure suction device 129. For example... Figure 22 As shown, the buoyancy-isolated negative pressure suction device 129 consists of a faucet housing 150, a grid inlet 152, a water-blocking weir 154, and a suction short pipe 155; the water-blocking weir 154 is located at the lower middle position of the faucet housing 150, and its bottom is fixedly connected to the bottom of the faucet housing 150, and both ends of the water-blocking weir 154 are fixedly connected to the side walls of the faucet housing 150.

[0193] The water-blocking weir 154 and the side wall of the faucet housing 150 on one side form a pumping chamber 168, and a grid inlet 152 is provided at the lower part of the faucet housing 150 on the other side of the water-blocking weir 154; or, the water-blocking weir 154 is cylindrical, the internal space of the water-blocking weir 154 forms a pumping chamber 168, and a grid inlet 152 is provided at the lower periphery of the faucet housing 150 on the outer side of the water-blocking weir 154.

[0194] The top of the faucet housing 150 is provided with a suction pipe interface 151 and a pressure balance pipe interface 153. The water-drawing chamber 168 inside the faucet housing 150 has an open upper opening. The upper end of the suction short pipe 155 is connected to the suction pipe interface 151 on the faucet housing 150 from the bottom side, and the lower end extends into the water-drawing chamber 168 through the open upper opening, with this end being a certain distance away from the bottom of the water-drawing chamber 168. A trash rack is provided on the bar screen inlet 152, and the upper edge of the weir 154 is higher than the upper edge of the bar screen inlet 152 by a certain amount. The distance is a certain distance from the inner top surface of the faucet shell 150, and the height is Δh (Δh > the thickness of the upper layer of floating fecal matter in the user sewage collection tank 35). The pressure balance pipe interface 153 is connected to the pressure balance pipe 156. The buoyancy-isolated negative pressure suction device 129 is set at the bottom of the user sewage collection tank 35. The vacuum suction pipe 37 is connected to the suction pipe interface 151 from the top. The lower end of the pressure balance pipe 156 is connected to the pressure balance pipe interface 153, and the upper end extends above the highest water level line of the user sewage collection tank 35 and is connected to the atmosphere.

[0195] In this embodiment, the liquid level sensor 39 in the collection tank adopts a pole-mounted multi-point liquid level acquisition device, such as... Figure 28 As shown, the system includes a sensor pole 190, a level switch 192, and a protective cylinder 193. The protective cylinder 193 is installed inside the user's sewage collection tank 35 and is fixed to the side wall near the inspection port 46 of the collection tank by a level device fixing bracket 195 installed at the top. The bottom end of the protective cylinder 193 extends to the bottom of the tank and is very close to the bottom. The top end is higher than the highest liquid level of the user's sewage collection tank 35 and is connected to the atmosphere. The liquid level inside the protective cylinder 193 can rise and fall with the liquid level of the user's sewage collection tank 35. The liquid level inside and outside the cylinder is lowered to maintain equal levels. The sensor rod 190 is installed inside the protective cylinder 193 and is hung on the upper opening of the protective cylinder 193 by a fixing bracket 194 at the top or directly on the side wall near the inspection port 46 of the collection tank. The sensor rod 190 is provided with at least one sensor fixing leg 191, and a liquid level switch 192 is fixed on the sensor fixing leg 191. The sensor rod 190 can be lifted out or put in the protective cylinder 193 for regular maintenance.

[0196] or,

[0197] The pole-mounted multi-point liquid level acquisition device includes only a sensor pole 190 and a liquid level switch 192. The sensor pole 190 is installed inside the user's sewage collection tank 35 and is hung on the side wall near the inspection port 46 of the collection tank by a fixing bracket 194 set at the top. The bottom end of the sensor pole 190 extends to the bottom of the tank and is a certain distance away from the bottom of the user's collection tank 35. The top end is a certain distance above the highest liquid level of the user's sewage collection tank 35. At least one sensor fixing leg 191 is provided on the sensor pole 190, and the liquid level switch 192 is fixed on the sensor fixing leg 191.

[0198] The liquid level switch 192 is connected to the user control unit 40, or the liquid level switch 192 is connected to the user control unit 40 via the three-way valve controller 176 or the negative pressure valve controller 148.

[0199] When using a single-compartment septic tank, floating fecal particles in the user's sewage collection tank 35 can easily adhere to the level switch 192, affecting its normal operation. Adding the protective cylinder 193 blocks the floating fecal particles, thus protecting the level switch 192 from contamination. However, when using a double-compartment or triple-compartment septic tank, the level sensors 39 are located in the second and third compartments respectively. Since there are no floating objects in the user's sewage collection tank 35, a pole-mounted multi-point level acquisition device consisting only of the sensor pole 190 and the level switch 192 can be used.

[0200] In this embodiment, the pole-mounted multi-point liquid level acquisition device is equipped with three liquid level switches 192, which are, from top to bottom: ① "Full tank level" liquid level switch, which is set at a position slightly lower than the highest liquid level of the user sewage collection tank 35 (approximately 95% of the volume, where the highest liquid level of the user sewage collection tank 35 is the lower edge of the user sewage discharge inlet 41); ② "High liquid level" liquid level switch, which is set at a height of about 70-80% of the tank's internal volume; ③ Empty liquid level switch, which is set at a position slightly higher than the lower opening of the vacuum suction pipe 37.

[0201] In this embodiment, the buoyancy-isolated negative pressure suction device 129 can be integrated with the liquid level sensor 39 in the collection tank, and the pressure balance pipe 156 also serves as the protective cylinder 193. Figure 29 .

[0202] VII. Intelligent Monitoring System

[0203] like Figure 12 As shown, in this embodiment, the intelligent monitoring system 7 includes an Internet of Things (IoT) platform 97 and a server 96 connected to the IoT platform 97; the power control unit 15, the exhaust control unit 65, and the user control unit 40 are all connected to the IoT platform 97; the IoT platform 97 is an IoT cloud platform or a local area network (LAN) platform; the server 96 is a cloud server 96 or a local area server 96.

[0204] This system mainly collects sewage through an intermittent active operation mode. Based on the full-liquidity alarm queue information of the user's sewage collection unit 3, the system remotely and actively controls the opening and closing of the intelligent suction valve 38 of the user's sewage collection unit 3, and collects the sewage through the zoned vacuum collection pipeline network 5 to the zoned sewage vacuum pressure pumping equipment 2. The intelligent monitoring system 7 can pump sewage from one household at a time according to the user's full-liquidity alarm queue list at a set time. After the pumping is completed, the power system enters sleep mode and the power pump stops working. The system operates intermittently, with one zoned vacuum collection pipeline network 5 pumping only one type of sewage from one user at a time. Multiple vacuum pressure pumping equipment 2 can perform pumping operations simultaneously.

[0205] In this embodiment, the intelligent suction valve 38 of the user sewage collection unit 3 can also passively open and close automatically based on the liquid level alarm of the collection tank level sensor when the liquid level in the user sewage collection tank reaches a certain height. This passive real-time suction mode requires the continuous operation of the pneumatic pump station, and it cannot achieve black and ash separation under a single-pipe zoned collection network. The number of collection zones 116 and vacuum pressure pumping devices 2 included in each system is also greatly limited. The intelligent suction valve 38 can also be manually opened and closed on-site via a button on the user control unit 40 connected to it.

[0206] In special circumstances, the intelligent suction valve 38 can also be temporarily or permanently replaced with a manual valve, allowing for manual operation on-site.

[0207] This embodiment provides a zoned vacuum pressure extraction method, which utilizes a drainage system. The extraction method includes...

[0208] 1. Create a product

[0209] All products are equipped with control units with gateways (such as pneumatic pump station 1, vacuum pressure pumping equipment 2, and user sewage collection unit 3), and each type of product has several attributes;

[0210] The specific products of the zoned vacuum pressure drainage system include: farmer end (user sewage collection unit 3, including user control unit 40), pumping station (vacuum pressure pumping equipment 2, including pumping control unit 65), power pumping station (air power pumping station 1, including power control unit 15), subsequent treatment facilities and equipment (sewage subsequent treatment and discharge facilities, centralized storage and treatment tank for fecal liquid, sewage treatment equipment, sludge and organic waste composting equipment, all including control units with gateways), and mobile terminal equipment (administrator smartphone terminal, emergency sludge pumping truck, and other supporting mobile equipment with positioning function, all including positioning and networking module functions).

[0211] 2. Create a project, add devices, and establish device associations.

[0212] Create a project indexed by project number, and select a product (equipment) from the created product list. Multiple levels of equipment (up to three levels) can be added under each project. For example, if the first-level equipment is a pump station, then at least one second-level equipment is a pumping station (the pump station provides air power to the pumping station), and each pumping station has at least one third-level equipment, a farmer valve (connected to the vacuum pipeline network of the corresponding zone of the pumping equipment).

[0213] Management Group: Add a project to a management group. A management group must manage at least one project.

[0214] 3. Equipment status and alarm information processing

[0215] Information Classification:

[0216] (1) Environment and equipment operating status: air temperature (collected by air temperature sensor 94), equipment temperature, liquid level (collected by pumping tank liquid level sensor 61, water inlet sensor 64, water tank liquid level sensor 92, etc.), pressure (collected by tank pressure sensor 60, negative pressure sensor 78, water temperature sensor 93, etc.), humidity, flow rate, valve, vacuum pump, water pump, fan and other equipment on / off status.

[0217] (2) Alarm for black and gray water levels in farmers (collected by level sensor 39 in the collection tank).

[0218] (3) Equipment fault alarm information.

[0219] Equipment status and alarm information processing:

[0220] The system responds promptly to user liquid level alarms, abnormal equipment status and fault information, and takes appropriate actions based on the information category, such as emergency equipment shutdown and sending fault information to the administrator.

[0221] 4. Sampling Method

[0222] like Figure 20 As shown, the extraction method includes the following steps:

[0223] 1) Pumping station start-up conditions settings:

[0224] ①Daily scheduled start: At the set time each day, when the number of "high liquid level" alarms in the drainage zone reaches the set minimum number of drainage users, the drainage operation of the drainage station (vacuum pressure drainage equipment) in that zone will be started on a daily schedule.

[0225] ②Immediate activation: When a household in a certain pumping zone has a full pool, i.e., when the "pool full level" alarm is triggered, or when the number of "high level" alarms reaches the set number of households, the pumping operation of the pumping station in that zone will be activated immediately.

[0226] 2) Pumping station drainage mode settings:

[0227] ① One household, one row: When the sewage of one household with one type of water quality is completely pumped from the user's sewage collection tank (down to the "empty liquid level") and enters the pumping tank through the zoned vacuum collection network (sensed by the inlet sensor), the drainage program is started; ② When the pumping tank is full, or when the liquid level of the sewage of the same type of water quality in the pumping tank reaches the drainage start condition, or when the pumping of the same type of water quality is completed and the water quality is changed, or when all users in a "pumping batch" have finished pumping, the drainage program is started.

[0228] A "pumping batch" refers to all alarm users within a pumping zone that meet the conditions for starting the pumping process (an alarm user may include one alarm record for black water or grey water, or two alarm records for black water and grey water).

[0229] 3) Simultaneous setting of the number of stations to be drawn and the number to be arranged:

[0230] Set the maximum number of pumping and drainage stations (vacuum pressure pumping equipment) that can pump water and drain water simultaneously; when the number of pumping stations in operation reaches the maximum, a newly applied pumping station must wait until one of the pumping equipment has finished pumping water before it can be granted a start-up permit; when the number of drainage stations in operation reaches the maximum, a newly applied drainage station must wait until one of the drainage equipment has finished draining water before it can be granted a start-up permit.

[0231] 4) List of candidates to be drawn:

[0232] A "drainage batch" is formed when the number of level alarms in the sewage collection tanks of all users in a certain drainage zone reaches the black water and gray water alarm levels (an alarm user may have one alarm record for black water or gray water, or two alarm records for black water and gray water).

[0233] 5) System startup:

[0234] When the pumping station starts pumping water, ① turn on the vacuum power unit 11 and air compressor power unit 12 of the air power pump station 1 and maintain pressure; if the vacuum pump unit 71 includes an upper water tank 84 and a lower water tank 85, then first determine whether to turn on the heating unit 121 based on the indoor temperature detected by the air temperature sensor 94, and wait for the indoor temperature to rise to the set temperature, close the upper water tank drain valve 90 and the water ring pump drain valve 91, turn on the circulating water pump 86, wait for the circulating water to be pumped from the lower water tank 85 to the upper water tank 84 and reach the overflow level, and then turn on the vacuum power unit 11; ② set the pumping station (vacuum pressure pumping equipment) to "running" state;

[0235] 6) Pumping preparation:

[0236] ① Send a pumping request remotely to the intelligent monitoring system 7 and obtain permission;

[0237] ② Close the positive pressure inlet valve 56, vent valve 57, and drain valve 69 of the vacuum pressure extraction device 2, open the negative pressure extraction valve 55 and water inlet valve 58, and connect the pipeline of the zoned vacuum collection network 5.

[0238] ③ Wait for the zoned vacuum collection network 5 to reach the specified vacuum level. The vacuum level setting value can be between 0.06-0.08 MPa.

[0239] 7) Single-household suction procedure:

[0240] Open the smart suction valve of the designated user, wait for the sewage collection tank of the black water or gray water user to be emptied (down to the "empty liquid level"), and all sewage enters the pumping tank through the zoned vacuum collection pipeline network, and close the farmer valve (smart suction valve 38).

[0241] 8) Pumping / drainage switching (pumping ends):

[0242] When the drainage start conditions set in the drainage mode of the pumping station are met, a pumping end message is remotely sent to the intelligent monitoring system 7.

[0243] 9) Drainage procedure:

[0244] When the set drainage start conditions are met, the following drainage procedure will be executed:

[0245] ①After sending a drainage request to the intelligent monitoring system 7 and obtaining permission, wait for the compressed air connection pipe to reach the set pressure;

[0246] ② Close the negative pressure suction valve 55 and the water inlet valve 58, open the vent valve 57, and wait for the pressure inside the suction tank 50 to rise to the same level as the atmospheric pressure outside the tank. Then close the vent valve 57 and open the drain valve 59, and open the positive pressure air inlet valve 56. Alternatively, do not close the vent valve 57 and start the drain pump 69.

[0247] ③ Wastewater is pumped from the pumping tank 50 into the black water drainage main 16 or the gray water drainage main 17 via the black water drainage connection pipe 18 or the gray water drainage connection pipe 19, and then enters the wastewater subsequent treatment and discharge facility 8. When the pumping tank 50 reaches the empty liquid level, the positive pressure air inlet valve 56, the drain valve 59, and the drain pump 69 are closed, and the drainage end information is sent remotely to the intelligent monitoring system 7. When the drain pump 69 is used for drainage and the drain pump 69 can directly discharge wastewater from the pumping tank 50 which is in a negative pressure state, the inlet valve 58 does not need to be closed and the vent valve 57 does not need to be opened.

[0248] When sewage can flow into the gravity-type drainage connection pipe by gravity, no drainage pump is required. Therefore, drainage can be achieved simply by opening the drainage valve 59, without needing to turn on the drainage pump.

[0249] 10) Automatic batch sampling program:

[0250] After scheduled or immediate start, the system automatically cycles through "pumping preparation - single household pumping procedure - pumping and draining switch - drainage procedure" (in each cycle, if the set drainage start conditions are not met, the "drainage procedure" is skipped), completing the pumping and drainage of all users in a "pumping and draining batch" according to the settings.

[0251] 11) Drainage termination procedure:

[0252] ① Send a request to remotely shut down the vacuum power unit 11 and the air compressor power unit 12 of the air power pump station;

[0253] ② Set the vacuum pressure extraction device 2 to a "static" state;

[0254] ③ If the vacuum pump unit 71 is a water ring vacuum pump unit including an upper water tank and a lower water tank, and the indoor temperature is lower than the set temperature, then turn off the circulating water pump 86, open the upper water tank drain valve 90 and the water ring pump drain valve 91, wait for the circulating water to be discharged from the upper water tank 84 and the pump body of the water ring vacuum pump 81 to the lower water tank 85, then turn off the heating unit 121, and set the vacuum pressure extraction equipment to the "static" state.

[0255] If only this pumping station is pumping, the vacuum power unit 11 and the air compressor power unit 12 will be shut down after receiving a shutdown request; if there are other pumping stations pumping, the vacuum power unit 11 and the air compressor power unit 12 will be shut down after all pumping stations send shutdown requests.

[0256] 5. Subsequent processing facilities and equipment and resource utilization information processing

[0257] (1) Wastewater treatment: monitoring the operating status of equipment;

[0258] (2) Centralized storage and processing pool: to monitor liquid level, etc.

[0259] In this embodiment, considering the characteristics of scattered rural residences, uneven sewage discharge, high construction and maintenance costs of gravity pipe networks and ordinary vacuum collection systems, and high demand for toilet waste resource utilization, the entire collection area is divided into several relatively concentrated independent collection zones 116. Each collection zone 116 is equipped with an independent vacuum collection pipe network and a vacuum pressure extraction device 2. The vacuum pressure extraction devices 2 of each collection zone 116 are connected to the pneumatic main pipe 4 and the drainage main pipe 6 extending to all zones. The pneumatic main pipe 4 is connected to the pneumatic pump station 1 at its beginning, and the drainage main pipe 6 is equipped with sewage subsequent treatment and discharge facilities 8 at its end, forming a "zoned vacuum pressure drainage system". This system uses air as a medium to provide power for the drainage system. It collects and discharges village sewage in a differentiated manner through "negative pressure zoned quality collection and positive pressure centralized rapid discharge", and can achieve low-cost collection and rapid centralized discharge of rural domestic sewage.

[0260] The zoned vacuum pressure drainage system collects sewage through an intermittent active operation mode. Based on the full-liquidity alarm queue information of user sewage collection unit 3, the system remotely and actively controls the opening and closing of the suction valve of user sewage collection unit 3. Using negative air pressure, sewage is collected through the zoned vacuum collection network 5 to the zoned sewage vacuum pressure pumping equipment 2. Then, positive pressure transports the sewage to the subsequent centralized sewage storage and treatment / discharge facility 8. The intelligent monitoring system 7 can pump sewage from each household according to the full-liquidity alarm queue list at set times. After pumping is completed, the power system enters sleep mode, the power pump stops working, and intermittent operation is maintained. Each zoned vacuum collection network 5 pumps only one type of sewage from one user at a time. Multiple pumping stations (vacuum pressure pumping equipment 2) can perform pumping operations simultaneously within the set "number of simultaneous pumping and discharging operations." When the sewage volume is large and the pumping interval is short, the system can also be set to operate continuously, automatically opening the valve when the user's liquid level is full or manually opening the user's valve to pump sewage from farmers in real time.

[0261] Example 2

[0262] In this embodiment, a dual-pipeline dual-extraction tank "vacuum collection-pump positive pressure discharge" partitioned vacuum pressure drainage system is provided.

[0263] See Figure 15 The entire collection area is divided into n collection zones 116, each collection zone 116 covers multiple user sewage collection units 3, and a dual-pipe zone vacuum collection network 5 and a vacuum pressure extraction device 2 with dual extraction tanks 50 are set up.

[0264] In this embodiment, the vacuum pressure drainage system mainly consists of an air-powered pump station 1 containing only a vacuum power unit 11, a vacuum pressure pumping device 2 with n dual-extraction tanks 50, n dual-pipe partitioned vacuum collection pipe networks 5, an air-powered main pipe 4 that only delivers vacuum power, a black water drainage main pipe 16, a grey water drainage main pipe 17, several two-way valve type user sewage collection units 3, and an intelligent monitoring system 7. The ends of the black water drainage main pipe 16 and the grey water drainage main pipe 17 are respectively connected to two subsequent sewage treatment and discharge facilities 8 for black water and grey water. The system uses positive pressure drainage with water pumps and does not have a compressed air main pipe 14 or an air compressor power unit 12.

[0265] I. Air-powered pump station 1

[0266] In this embodiment, the vacuum power unit 11 in the air power pump station 1 has two modes:

[0267] (1) Use a ground-mounted water ring vacuum pump unit suitable for high-altitude and cold regions. For example... Figure 3 and Figure 24As shown, the vacuum pump unit 71 comprises a water ring vacuum pump 81, a vacuum pump discharge pipe 83, a water supply pipe 82, an upper water tank 84, a lower water tank 85, a circulating water pump 86, a water supply pipe 87, an overflow pipe 88, a vent pipe 89, an upper water tank vent valve 90, a water ring pump vent valve 91, a heating unit 121, a water tank level sensor 92, a water temperature sensor 93, and an air temperature sensor 94. The water ring vacuum pump 81, the upper water tank 84, the upper water tank vent valve 90, the water ring pump vent valve 91, the heating unit 121, and the air temperature sensor 94 are installed within the pump station enclosure structure 20 with an insulation layer above the ground line. The lower water tank 85 is buried below the frost line 124 below the upper water tank 84 (the lower water tank must be installed below the frost layer; it can be installed inside or outside the pump station enclosure structure according to actual needs). The circulating water pump 86 is installed at the bottom of the lower water tank 85. The air inlet of the water ring vacuum pump 81 is connected to the air inlet connecting pipe 75, and the outlet is connected to one end of the vacuum pump discharge pipe 83. The other end of the vacuum pump discharge pipe 83 is connected to the upper water tank 84 from the top. The overflow pipe 88 is connected to the upper water tank 84, with its upper end slightly lower than the interface between the vacuum pump discharge pipe 83 and the upper water tank 84, and its lower end extending into the lower water tank 85. One end of the water supply pipe 82 is connected to the water supply port of the water ring vacuum pump 81, and the other end is connected to the upper water tank 84. Its connection point is lower than the upper opening of the overflow pipe 88. The lower end of the water supply pipe 87 is connected to... A circulating water pump 86 is connected to an upper water tank 84, with its connection point higher than the upper opening of an overflow pipe 88. An upper water tank drain valve 90 is located at the bottom of the upper water tank 84, and a water ring vacuum pump drain valve 91 is located at the bottom drain port of the water ring vacuum pump 81. A drain pipe 89 is connected to the lower ends of the upper water tank drain valve 90 and the water ring pump drain valve 91, with the lower end of the drain pipe 89 extending into the lower water tank 85. A water tank level sensor 92 and a water temperature sensor 93 are installed inside the upper water tank 84, and a water tank vent 105 is located at the top and connected to an vent connection pipe 77. The water ring vacuum pump 81, circulating water pump 86, upper water tank drain valve 90, water ring pump drain valve 91, heating unit 121, water tank level sensor 92, water temperature sensor 93, air temperature sensor 94, and power control unit 15 are wired together.

[0268] like Figure 24 In this embodiment, the equipment of the vacuum pump unit 71, including the water ring vacuum pump 81, the upper water tank 84, the upper water tank drain valve 90, the water ring pump drain valve 91, the heating unit 121, and the temperature sensor 94, is installed together with other equipment of the pneumatic pump station 1, such as the regulating filter tank 72 and the exhaust gas treatment device 79, within the pump station enclosure structure 20 above the ground line 123. The lower water tank 85 is installed in the soil layer below the frost line below or near the upper water tank 84, and can be installed using the space of the equipment foundation 125.

[0269] In cold seasons in high-altitude and frigid regions, when not in operation, all circulating water in the upper water tank 84 and the water ring vacuum pump 81 is drained through the vent pipe 89 into the lower water tank 85, which is below the frost line. The heating unit 121 is not in operation, and the temperature inside the pump station enclosure structure 20 can be lowered to below 0°C. When operation is required, the heating unit 121 is activated first to raise the temperature inside the pump station enclosure structure 20 above 0°C. Then, the circulating water pump 86 pumps circulating water from the lower water tank 85 into the upper water tank 84. Once the water level reaches the set height, the water ring vacuum pump 81 starts operating. When the circulating water temperature is too high, the circulating water pump 86 also starts working, continuously pumping circulating water from the lower water tank 85 into the upper water tank 84, and then continuously flowing into the lower water tank 85 through the overflow pipe 88. By continuously circulating, the circulating water temperature is lowered. When the air temperature is high, the low temperature of the soil can be used to lower the circulating water temperature in the lower water tank 85, reducing the operating time of the circulating water pump 86 and saving energy.

[0270] Above-ground equipment is convenient to use and maintain, and less affected by groundwater. This embodiment uses a water-ring vacuum pump above-ground pneumatic pump station 1, making full use of natural energy. During normal operation, the circulating water is stored in a lower water tank 85 located in the soil below the frost line, where the ground temperature is positive. When not in operation, the equipment does not need to be heated. Alternatively, during brief periods of extremely low temperatures (e.g., below -25°C), low-power heating measures are used to maintain the equipment temperature above the extremely low temperature (e.g., -25°C) to prevent damage to some components from freezing (the extremely low temperature limit is determined based on the low-temperature resistance of electronic components). This solution significantly reduces operating and maintenance costs by fully utilizing ground temperature.

[0271] (2) The vacuum power unit 11 of the air power pump station 1 adopts a rotary vane vacuum pump vacuum power unit or a dry screw vacuum pump vacuum power unit.

[0272] like Figure 2 As shown, the vacuum power unit 11 includes a vacuum pump unit 71, a regulating filter tank 72, a negative pressure inlet pipe 73, an inlet connecting pipe 75, an exhaust connecting pipe 77, and a negative pressure sensor 78; the regulating filter tank 72 has a filter layer 42 inside, and a negative pressure inlet pipe 73 is connected to the regulating filter tank 72 on the inlet side of the filter layer 42. The negative pressure inlet pipe 73 is connected to the vacuum power main pipe 13, and a negative pressure inlet valve 74 may or may not be provided on the negative pressure inlet pipe 73; the filter layer 42 The outlet-side regulating filter tank 72 is connected to one end of the inlet connecting pipe 75. The vacuum pump unit 71 is a rotary vane vacuum pump power unit, consisting of two parallel rotary vane vacuum pumps (one in use and one on standby). The inlets of both rotary vane vacuum pumps are connected to the other end of the inlet connecting pipe 75. An inlet check valve 76 is provided at the connection point between the inlet connecting pipe 75 and the two parallel rotary vane vacuum pumps. The outlets of both rotary vane vacuum pumps are connected to the exhaust connecting pipe 77.

[0273] Alternatively, the vacuum pump unit 71 may be a dry screw vacuum pump unit, wherein the inlet of the dry screw vacuum pump is connected to the other end of the inlet connecting pipe 75, the inlet connecting pipe 75 is equipped with an inlet check valve 76, and the outlet of the dry screw vacuum pump is connected to the exhaust connecting pipe 77. The dry screw vacuum pump unit is equipped with a screw vacuum pump housing water cooling system.

[0274] In this embodiment, the exhaust connection pipe 77 is connected to the air inlet of the exhaust gas treatment device 79, and the air outlet of the exhaust gas treatment device 79 is connected to the exhaust gas discharge pipe 80, which is connected to the atmosphere; a negative pressure sensor 78 is provided on the regulating filter tank 72 or the air inlet connection pipe 75; the negative pressure sensor 78, the vacuum pump unit 71, and the negative pressure air inlet valve 74 are all wired or wirelessly connected to the power control unit 15.

[0275] In this embodiment, the vacuum power unit 11 of the air-powered pump station 1, together with the power control unit 15, is installed in the underground pump station enclosure structure 20 and buried below the frost line.

[0276] II. Air Power Main Pipe 4

[0277] It consists of a vacuum power main pipe 13 and n vacuum power connecting pipes 21. One end of the vacuum power main pipe 13 is connected to the vacuum pump unit 71, and the vacuum power main pipe 13 is connected to the vacuum pressure extraction equipment 2 of each zone through the vacuum power connecting pipes 21.

[0278] III. Main Drainage Pipe 6

[0279] Same as Example 1.

[0280] IV. Zoned Vacuum Collection Pipeline Network 5

[0281] like Figure 10The zoned vacuum collection network 5 adopts a dual-pipe vacuum collection network that can separately transport black water and gray water and is arranged in parallel. It consists of two parallel black water main pipes 28 and gray water main pipes 29, two parallel black water branch pipes 30 and gray water branch pipes 31, and two parallel black water inlet pipes 119 and gray water inlet pipes 120. One end of the black water inlet pipe 119 is connected to the user's sewage collection unit 3, and the other end is connected to the black water branch pipe 30 or the black water main pipe 28. The black water branch pipe 30 is connected to the black water main pipe 28, and the end of the black water main pipe 28 is connected to the inlet pipe of the black water extraction tank 50 of the vacuum pressure extraction equipment 2 (dual-tank water pump drainage vacuum pressure extraction equipment 2). One end of the grey water inlet pipe 120 is connected to the user's sewage collection unit 3, and the other end is connected to the grey water branch pipe 31 or the grey water main pipe 29. The grey water branch pipe 31 is connected to the grey water main pipe 29, and the end of the grey water main pipe 29 is connected to the inlet pipe of the grey water extraction tank 50 of the vacuum pressure extraction equipment 2 (dual-tank water pump drainage vacuum pressure extraction equipment 2). The black water main pipe 28 and grey water main pipe 29, the black water branch pipe 30 and grey water branch pipe 31, and the black water inlet pipe 119 and grey water inlet pipe 120 can be arranged in parallel in the same trench or separately. Pipeline accessories such as inspection pipes and maintenance valves may be installed on pipelines.

[0282] V. Vacuum pressure extraction equipment 2

[0283] like Figure 16The vacuum pressure extraction device 2, which uses a dual-tank water pump for drainage, consists of two extraction tanks 50 for extracting black water and gray water respectively, two negative pressure inlet pipes 53, two positive pressure drain pipes 54, a shared negative pressure suction pipe 51 for both tanks, two venting devices, an extraction control unit 65, an extraction device housing 66, and negative pressure suction valves 55, inlet valves 58, venting valves 57, drain valves 59, tank pressure sensors 60, extraction tank level sensors 61, inlet sensors 64, drain pumps 69, and drain check valves 63 installed on the two extraction tanks 50 respectively. Both extraction tanks 50 are housed within the same extraction device housing 66 and connected to it via fasteners 70. Each tank has an inspection port 67, and the extraction device housing 66 has a maintenance port 68. Each extraction tank 50 is equipped with a tank pressure sensor 60 and an extraction tank level sensor 61 fixed to its top. The upper parts of the two extraction tanks 50 for black water and grey water are respectively connected to two negative pressure inlet pipes 53 for black water and grey water. Inlet sensors 64 and inlet valves 58 are installed on the negative pressure inlet pipes 53. The two negative pressure inlet pipes 53 extend outward from the extraction equipment housing 66 and are respectively connected to the black water vacuum collection main pipe 25 and grey water vacuum collection main pipe 25 of the zoned vacuum collection network 5. A shared negative pressure suction pipe 51 passes through the extraction equipment housing 66 from the outside and is connected to the two extraction tanks 50 for black water and grey water from the top. The pipe head of the negative pressure suction pipe 51 extends into the tank body, and a water-blocking valve 163 is connected to the pipe head of the negative pressure suction pipe 51. A negative pressure suction valve 163 is installed on the negative pressure suction pipe 51. The outer end of the negative pressure suction pipe 51 is connected to the vacuum power main pipe 13 via the vacuum power connection pipe 21; the front end of the black water and gray water positive pressure drainage pipes 54 are connected to the two black water and gray water drainage tanks 50 from the bottom, respectively, and the rear end passes through the drainage equipment housing 66 and is connected to the black water drainage main pipe 16 and gray water drainage main pipe 17 via the black water drainage connection pipe 18 and gray water drainage connection pipe 19, respectively. On each positive pressure drainage pipe 54, a drainage valve 59, a drainage pump 69, and a drainage check valve 63 are installed sequentially from the inside to the outside; a tank pressure sensor 60 is fixed on the top of each drainage tank 50, and a drainage tank level sensor 61 is fixed inside each drainage tank 50.

[0284] In this embodiment, the venting device includes a venting valve 57 and a venting pipe 89. One end of the venting pipe 89 is connected to the top of the extraction tank 50, and the other end of the venting pipe 89 is connected to the atmosphere. The venting pipe 89 is provided with a venting valve 57.

[0285] In this embodiment, the extraction control unit 65 is located near the ground level outside the underground extraction equipment housing 66, and is wiredly connected to the negative pressure extraction valve 55, vent valve 57, water inlet valve 58, drain valve 59, drain pump 69, tank pressure sensor 60, extraction tank level sensor 64, and water inlet sensor 64. It is also wiredly connected to the power control unit 15, user control unit 40, and intelligent monitoring system 7. The vacuum pressure extraction equipment 2 is buried underground at the end of the zoned vacuum collection pipeline network 5.

[0286] VI. User Wastewater Collection Unit 3

[0287] like Figure 17 The user sewage collection unit 3 adopts a two-way valve household sewage collection unit, which consists of two user sewage collection tanks 35 on the left and right that collect black water and gray water respectively, as well as an inspection well 126, a user sewage discharge inlet 41, a two-way micro-controlled negative pressure pneumatic angle valve 38, a vacuum suction pipe 37, a collection tank level sensor 39, and a shared user control unit 40 configured for each user sewage collection tank 35.

[0288] Both user sewage collection tanks 35 are single-cell septic tanks without internal partitions at the top, and each is equipped with a user sewage inlet 41. An inspection well 126, which also serves as a valve well, is located above the inspection port 46 of the collection tank. A valve well maintenance port 47 is located at the top of the inspection well 126. The two user sewage inlets 41 receive user black water (toilet sewage) and grey water (other domestic sewage) discharged through gravity-type user sewage discharge pipes, respectively. A filter bag 108 is installed in the user sewage inlet 41 within the grey water user sewage collection tank 35. Each of the inspection well shafts 126 above the pool is equipped with a two-way intelligent suction valve 38. Each two-way intelligent suction valve 38 is a micro-controlled negative pressure pneumatic angle valve, which consists of a Y-type angle valve and a micro-controlled negative pressure actuator. Each two-way suction valve 48 has one inlet and one outlet, and two valve positions: "open" and "closed". The intelligent suction valve 38 is located inside the inspection well shaft 126, approximately 50cm from the well opening (for easy maintenance from outside the well). The upper end of the vacuum suction pipe 37 is connected to the inlet of the micro-controlled negative pressure pneumatic angle valve. A negative pressure suction device 129 is installed at the lower end of the vacuum suction pipe 37 in the black water tank, and a suction head 45 is installed at the lower end of the vacuum suction pipe 37 in the grey water tank. Both the negative pressure suction device 129 and the suction head 45 are inserted into the bottom of the tank, and their upper ends are connected to the inlet of the intelligent suction valve 38. The outlets of the two intelligent suction valves 38 are respectively connected to the black water inlet pipe 119 and the grey water inlet pipe 120 of the zoned vacuum collection network 5 (dual network). When the network is buried at a greater depth and the intelligent suction valve 38 is buried at a shallower depth, the black water inlet pipe 119 and the grey water inlet pipe 120 will... A vertical or inclined riser pipe section should be installed at 120 to connect to the outlet of the suction valve 38. When the vertical or inclined riser pipe section passes through the frozen soil layer, insulation measures should be taken. The collection tank level sensor 39 is installed inside the two user sewage collection tanks 35. The user control unit 40 is located near the ground level outside the inspection well shaft 126. The user control unit 40 is wired to the intelligent suction valve 38 and the collection tank level sensor 39, and wired to the pumping control unit 65 and the intelligent monitoring system 7. The user sewage collection tanks 35 are buried underground. The operation process of the micro-controlled negative pressure pneumatic angle valve is the same as in Example 1.

[0289] like Figure 22 As shown, when a single-compartment septic tank is used as the user's sewage collection tank 35, there is unhydrated floating feces in the tank. To prevent the floating feces from entering the vacuum pipe, the suction head 45 should be equipped with a floating-isolation negative pressure suction device 129, which is located at the bottom of the user's sewage collection tank 35. In actual operation, Δh is set to be slightly greater than the thickness of the floating feces layer. When the liquid level in the tank drops to the upper edge of the weir 154, the sewage cannot enter the pumping chamber 168, the liquid level stops dropping, and the floating feces cannot enter the floating-isolation negative pressure suction device 129 from the grate inlet 152.

[0290] In this embodiment, a negative pressure suction device 129 with a liquid level acquisition device can also be used, such as... Figure 29 As shown, the pressure balancing pipe 156 also serves as a protective cylinder 193; the pole-type multi-point liquid level acquisition device includes a sensor pole 190 and a liquid level switch 192. The sensor pole is installed inside the pressure balancing pipe 156 and can extend into the cage housing 150 by a certain distance. It is hung on the opening of the pressure balancing pipe 156 by a fixing bracket 194 provided at the top. The sensor pole is provided with at least one sensor fixing leg 191. The liquid level switch 192 is fixed on the sensor fixing leg. The sensor pole 190 with the liquid level switch 192 fixed can be pulled out or put into the pressure balancing pipe 156; the liquid level switch 192 is connected to the user control unit 40, or connected to the user control unit 40 through the intelligent suction valve 38.

[0291] In this embodiment, the pole-mounted multi-point liquid level acquisition device is equipped with three liquid level switches 192, which are, from top to bottom: ① "full liquid level" liquid level switch, which is set at a position slightly lower than the highest liquid level of the user's sewage collection tank 35 (about 95% of the volume); ② "high liquid level" liquid level switch, which is set at a height of about 70-80% of the tank's internal volume; ③ "empty liquid level" liquid level switch, which is set at a position slightly higher than the upper edge of the weir 154.

[0292] VII. Intelligent Monitoring System

[0293] It consists of an IoT platform 97 and a server 96. The IoT platform 97 is a wired self-organizing network IoT platform, mainly composed of a master station module. The master station module is connected to the power control unit 15, the exhaust control unit 65, and the user control unit 40 via a 485 bus. The master station module is wired to the independently set up server 96, which controls the operation of the monitoring system.

[0294] Example 3

[0295] In this embodiment, a zoned vacuum pressure drainage system for "single-pipeline mixed sewage vacuum collection-pneumatic drainage" is provided:

[0296] like Figure 18The entire collection area is divided into n collection zones 116, each covering multiple user sewage collection units 3. A single-pipe network is set up to collect mixed sewage. This "negative pressure collection - compressed air positive pressure discharge" vacuum pressure drainage system mainly consists of an air-powered pump station 1, n vacuum pressure extraction devices 2, n zoned vacuum collection network 5, two air-powered main pipes 4 for negative and positive pressure, a mixed sewage discharge main pipe 6, several single collection tank two-way valve user sewage collection units 3, and an intelligent monitoring system 7. A sewage subsequent treatment and discharge facility is set at the end of the mixed sewage discharge main pipe 6, which is the municipal sewage network.

[0297] I. Air-powered pump station 1

[0298] Same as Example 1.

[0299] II. Air Power Main Pipe 4

[0300] Same as Example 1.

[0301] III. Main Drainage Pipe 6

[0302] The main drainage pipe 6 consists of one black water drainage main pipe 16 and n black water drainage connecting pipes 18, used to transport the mixed sewage collected by the vacuum pressure pumping equipment 2. The black water drainage main pipe 16 is connected to each vacuum pressure pumping equipment 2 through the black water drainage connecting pipes 18. The end of the black water drainage main pipe 16 is connected to the sewage subsequent treatment and discharge facility. The black water drainage main pipe 16 is configured as a gravity drainage pipe or a low-pressure drainage pipe. The sewage subsequent treatment and discharge facility consists of a drainage inspection well 109 and a township municipal drainage pipe 110. The end of the black water drainage main pipe 16 is connected to the drainage inspection well 109, and the drainage inspection well 109 is connected to the township municipal drainage pipe 110. The collected mixed sewage is discharged to the municipal sewage treatment plant for treatment through the township municipal drainage pipe 110.

[0303] IV. Vacuum Pressure Extraction Equipment 2

[0304] The vacuum pressure extraction device 2, which uses "negative pressure collection - compressed air positive pressure discharge", is used. Figure 6It consists of a pumping tank 50, a negative pressure suction pipe 51, a positive pressure air inlet pipe 52, a negative pressure water inlet pipe 53, a positive pressure drain pipe 54, a negative pressure suction valve 55, a positive pressure air inlet valve 56, a water inlet valve 58, a drain valve 59, a venting device, an air inlet pressure reducing valve 62, a drain check valve 63, a tank pressure sensor 60, a pumping tank level sensor 61, a water inlet sensor 64, a pumping control unit 65, and a pumping equipment housing 66. The extraction tank 50 is housed inside the extraction equipment housing 66. The extraction tank 50 has an inspection port 67, and the extraction equipment housing 66 has a maintenance port 68. One end of the negative pressure extraction pipe 51, the positive pressure air inlet pipe 52, and the negative pressure water inlet pipe 53 are connected to the extraction tank 50 at the top. The end of the negative pressure extraction pipe 51 extends into the tank body of the extraction tank 50 and is connected to a water-blocking valve 163. The other end of the negative pressure extraction pipe 51 is connected to the vacuum power main pipe 13 via a vacuum power connection pipe 21. A negative pressure extraction valve 55 is installed on the negative pressure extraction pipe 51. The other end of the positive pressure air inlet pipe 52 is connected to a compressed air connection... Connector 22 is connected to the compressed air main pipe 14. A positive pressure air inlet valve 56 is installed on the positive pressure air inlet pipe 52, and an air inlet pressure reducing valve 62 is installed between the positive pressure air inlet valve 56 and the extraction tank 50. The other end of the negative pressure water inlet pipe 53 is connected to the vacuum collection main pipe 25 of the partitioned vacuum collection pipe network 5. A water inlet valve 58 and a water inlet sensor 64 are installed on the negative pressure water inlet pipe 53. One end of the positive pressure drain pipe 54 passes through the tank body and extends to the bottom of the extraction tank 50. The other end passes through the extraction equipment housing 66 and is connected to the black water drainage connection pipe 18. The other end of the black water drainage connection pipe 18 is connected to the black water drainage main pipe 16. A drain valve 59 and a drain check valve 63 are installed on the positive pressure drain pipe 54. A tank pressure sensor 60 and a venting device are installed on the top of the pumping tank 50. The pumping tank level sensor 61 is fixed on the tank body of the pumping tank 50 and extends into the tank body. The venting device is an energy recovery venting device composed of a venting valve 57, a venting pipe 89, a vacuum generator 32, a bypass pipe 33, and a bypass check valve 95. One end of the venting pipe 89 is connected to the pumping tank 50 at the top, and the other end is connected to the air inlet of the vacuum generator 32. A venting valve 57 is installed on the venting pipe 89. The suction port of the vacuum generator 32 is connected to the bypass pipe 33. The other end of the bypass pipe 33 is connected to the negative pressure suction pipe 51 and is located upstream of the water inlet valve. A bypass check valve 95 is installed on the bypass pipe 33. The exhaust port of the vacuum generator 32 is connected to the atmosphere (a silencer can be installed when the vacuum generator is connected to the atmosphere to reduce noise).In this embodiment, the vacuum pressure extraction device 2 uses electric ball valves for its negative pressure extraction valve 55, positive pressure inlet valve 56, water inlet valve 58, drain valve 59, and vent valve 57. The inlet pressure reducing valve 62 is a manual pressure reducing and regulating valve. The extraction control unit 65 is located above ground level above the housing 66 of the extraction device and is wiredly connected to the negative pressure extraction valve 55, positive pressure inlet valve 56, vent valve 57, water inlet valve 58, drain valve 59, tank pressure sensor 60, extraction tank level sensor 61, and water inlet sensor 64. It is also wirelessly connected to the power control unit 15, user control unit 40, and intelligent monitoring system 7. The vacuum pressure extraction device 2 is buried underground at the end of the zoned vacuum collection pipeline network 5. Figure 14 This is a schematic diagram of the appearance of the buried vacuum pressure extraction device 2 (with one positive pressure drain pipe 54 removed). The specific description is the same as in Example 1.

[0305] V. Zoned Vacuum Collection Piping Network 5

[0306] Same as Example 1.

[0307] VI. User Wastewater Collection Unit 3

[0308] A mixed wastewater collection unit employing only one user wastewater collection tank 35 and one two-way suction valve, such as Figure 17 (Left side) Figure 25 (Removing one user sewage collection tank 35). It consists of a user sewage collection tank 35, a user sewage inlet 41, a two-way micro-controlled negative pressure pneumatic angle valve 38, a vacuum suction pipe 37, a floating negative pressure suction device 129 (replacing the suction head 45), a collection tank level sensor 39, a user control unit 40, and an inspection port well 126 (replacing the valve well 36). The user sewage collection tank 35 is a single-cell, non-partitioned septic tank. An inspection port well 126 is located above the collection tank inspection port 46 at the top, and a valve well maintenance port 47 is located at the top. The user sewage collection tank 35 has a user sewage inlet 41 at the top, which is connected to the user sewage discharge pipe.

[0309] In this embodiment, the inspection well 126 also serves as the valve well 36. The intelligent suction valve 38 (two-way micro-controlled negative pressure pneumatic angle valve) is installed inside the inspection well 126. The upper end of the vacuum suction pipe 37 is connected to the inlet of the intelligent suction valve 38. The lower end of the vacuum suction pipe is equipped with a floating negative pressure suction device 129, which extends to the bottom of the user sewage collection tank 35. A pressure balance pipe 156 is connected to the pressure balance pipe interface 153 of the floating negative pressure suction device 129. The upper end of the pressure balance pipe extends above the highest water level of the user sewage collection tank 35 and is connected to the atmosphere. The outlet of the intelligent suction valve 38 is connected to the vacuum collection connection pipe 27 of the zoned vacuum collection pipe network 5. The user control unit is installed on a wall near the ground, at least 1.8 meters above the ground.

[0310] The working process of the buoyancy-isolated negative pressure suction device 129 is the same as in Embodiment 2.

[0311] In this embodiment, the two-way intelligent suction valve 38 adopts a micro-controlled negative pressure pneumatic angle valve, which consists of a Y-type angle valve and a micro-controlled negative pressure actuator. The two-way suction valve 48 has one inlet and one outlet, and has two valve positions: "open" and "closed". The inlet of the micro-controlled negative pressure pneumatic angle valve is connected to the upper end of the vacuum suction pipe 37, and the outlet is connected to the vacuum collection connection pipe 27 of the partitioned vacuum collection network 5 (dual network). The collection tank level sensor 39 is installed in the user sewage collection tank 35. The user control unit 40 is wiredly connected to the intelligent suction valve 38 and the collection tank level sensor 39, and wirelessly connected to the pumping control unit 65 and the intelligent monitoring system 7. The user sewage collection tank 35 is buried underground.

[0312] The working process of the micro-controlled negative pressure pneumatic angle valve is the same as in Example 1.

[0313] VII. Intelligent Monitoring System

[0314] It consists of an IoT platform 97 and a server 96. The IoT platform 97 is a self-organizing network IoT platform based on LoRa wireless communication. It mainly consists of a master station module, which is wirelessly connected to the power control unit 15, the exhaust control unit 65, and the user control unit 40. The master station module is wiredly connected to the independently set up server 96, which controls the operation of the monitoring system.

[0315] Example 4

[0316] like Figure 19This embodiment integrates the vacuum pressure extraction device 2 with the pneumatic pump station 1 into a single integrated sewage vacuum pressure pump station. Specifically, the vacuum pressure extraction device 2 is incorporated into the pump station enclosure structure 20 of the pneumatic pump station 1, and the extraction device housing 66 is integrated with the pump station enclosure structure 20. The extraction control unit 65 and the power control unit 15 are either integrated or independently configured. The integrated sewage vacuum collection pump station mainly consists of a vacuum power unit 11, a compressed air power unit 12, an extraction tank 50, an equipment control unit (the extraction control unit 65 and the power control unit 15, or a combined equipment control unit), connecting pipes and auxiliary equipment, and the pump station enclosure structure 20. Vacuum power unit 11, air compressor power unit 12, extraction tank 50 and extraction auxiliary equipment and equipment control unit are installed inside the pump station enclosure structure 20. The front end of the vacuum power main pipe 13 is connected to the vacuum power unit 11, and the rear end is connected to one end of the vacuum power connecting pipe 21. The other end of the vacuum power connecting pipe 21 is connected to the negative pressure extraction pipe 51 on the extraction tank 50. The front end of the compressed air main pipe 14 is connected to the air compressor power unit 12, and the rear end is connected to one end of the compressed air connecting pipe 22. The other end of the compressed air connecting pipe 22 is connected to the positive pressure air inlet pipe 52 on the extraction tank 50. The vacuum power main pipe 13 and the compressed air main pipe 14 can be extended outside the equipment to provide air power for at least one independent pumping station (vacuum pressure pumping equipment 2). The negative pressure water inlet pipe 53 on the pumping tank 50 extends outside the equipment and is connected to the main pipe of the zoned vacuum collection network 5. The drain pipe connected to the bottom of the pumping tank 50 extends outside the equipment and is connected to one end of the drain connection short pipe. The other end of the drain connection short pipe is connected to the sewage subsequent treatment and discharge facility 8 through the drain main pipe 6 or directly (when there is no independent pumping station).

[0317] The air-powered pump station 1 within the integrated sewage vacuum collection pump station equipment can provide air power only for the pumping tank 50 within the pump station equipment, or it can provide air power for the pumping tank 50 and at least one independent pumping station equipment. When the integrated sewage vacuum collection pump station equipment only provides air power for the pumping tank 50 within the pump station equipment, the air-powered pump station may not be equipped with an air compressor unit 12 and auxiliary pipelines, and the positive pressure air inlet pipe 52 on the pumping tank 50 may be eliminated. Instead, a "negative pressure collection - sewage pump positive pressure discharge" pumping mode is adopted. A drain valve, a drain pump, and a drain check valve are installed on the positive pressure drain pipe 54, and the sewage in the pumping tank 50 is discharged by the drain pump.

[0318] By adopting the above-disclosed technical solution of this invention, the following beneficial effects are obtained:

[0319] This invention provides a zoned vacuum pressure drainage system and pumping method. By setting up a zoned vacuum collection pipe network and vacuum pressure pumping equipment, the length and average burial depth of the vacuum collection pipes are significantly reduced, and the vacuum collection time is greatly shortened, overcoming the shortcomings of low energy density and low long-distance transportation efficiency of "negative pressure air". Multiple vacuum pressure pumping devices are powered by a centralized power pump station located outside the village, significantly reducing the number of power equipment, facilitating system operation and maintenance, and keeping all noise sources outside the village. In case of power outages, a self-contained generator can be activated to ensure timely pumping of user sewage (requiring the installation of batteries or uninterruptible power supplies to power the valves, information acquisition, and communication components of the user sewage collection units and vacuum pressure pumping equipment). Each vacuum pressure pumping device pumps sewage from only one household at a time. A single-pipe network can also be used to collect and separately store and treat black and gray sewage. Multiple vacuum pressure pumping devices can operate simultaneously, further improving collection efficiency. Using single-pipe or double-pipe vacuum collection networks to collect black and gray water separately achieves centralized collection and treatment of black and gray water. This system operates on an active, intermittent pumping basis. The power system only activates when a certain number of users trigger a "full liquid alarm," and then enters a dormant state after pumping is complete, consuming virtually no electricity. Pumping operations can be scheduled during off-peak electricity hours. When sewage volume is low, the operating interval can be increased, significantly reducing operating costs. (For larger sewage volumes, real-time pumping can be configured, pumping only when an alarm is triggered.) By combining vacuum collection with low-pressure drainage, the system uses a "negative pressure zoned and quality-based collection, positive pressure centralized and rapid discharge" approach to pump sewage. This is a low-cost rural domestic sewage drainage system. Furthermore, the black and ash separation collection model significantly reduces sewage treatment costs while providing a foundation for the utilization of black water as fertilizer and the low-cost treatment of ash water.

[0320] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A zoned vacuum pressure drainage system, characterized in that: The system includes an air-powered pump station, an air-powered main pipe, a drainage main pipe, vacuum pressure extraction equipment, a zoned vacuum collection network, user sewage collection units, and an intelligent monitoring system. The air-powered main pipe is connected to the air-powered pump station, and at least one vacuum pressure extraction device is connected to the air-powered main pipe. A zoned vacuum collection network is connected to the vacuum pressure extraction device, and at least one user sewage collection unit is connected to the zoned vacuum collection network. The drainage main pipe is connected to the vacuum pressure extraction device and to subsequent sewage treatment and discharge facilities. The user sewage collection unit is connected to the user sewage discharge pipe. The intelligent monitoring system is connected to the air-powered pump station, the vacuum pressure extraction equipment, and the user sewage collection units. The pneumatic pump station includes a pump station enclosure structure and a vacuum power unit, an air compressor power unit, and a power control unit installed within the pump station enclosure structure. The vacuum power unit and the air compressor power unit are connected to the power control unit, and the power control unit is connected to the intelligent monitoring system. The pneumatic main pipe includes a vacuum power main pipe, a compressed air main pipe, a vacuum power connecting pipe, and a compressed air connecting pipe; the vacuum power main pipe is connected to a vacuum power unit, and at least one vacuum power connecting pipe is connected to the vacuum power unit, which is connected to the vacuum pressure extraction equipment; the compressed air main pipe is connected to the compressed air power unit, and at least one compressed air connecting pipe is connected to the compressed air unit, which is connected to the vacuum pressure extraction equipment; the drainage main pipe includes a black water drainage main pipe and a grey water drainage main pipe. The system includes black water drainage connection pipes and grey water drainage connection pipes; the wastewater subsequent treatment and discharge facilities include a centralized black water storage and treatment facility and a centralized grey water treatment and discharge facility; the main black water drainage pipe is connected to the centralized black water storage and treatment facility, and at least one black water drainage connection pipe is connected to the main black water drainage pipe, which is connected to a vacuum pressure extraction device; the centralized grey water treatment and discharge facility is connected to the main grey water drainage pipe, and at least one grey water drainage connection pipe is connected to the main grey water drainage pipe, which is connected to a vacuum pressure extraction device; or, The main drainage pipe includes a black water drainage main pipe and a black water drainage connecting pipe. The black water drainage main pipe is connected to a centralized black water storage and treatment facility. At least one black water drainage connecting pipe is connected to the black water drainage main pipe, and the black water drainage connecting pipe is connected to a vacuum pressure extraction device. The zoned vacuum collection network is either a single-pipe network or a double-pipe network. When the zoned vacuum collection network is a single-pipe network: the zoned vacuum collection network includes at least one vacuum collection main pipe, a vacuum collection branch pipe, and a vacuum collection service pipe; the vacuum collection main pipe is connected to a vacuum pressure pumping device, at least one vacuum collection branch pipe is connected to the vacuum collection main pipe, at least one vacuum collection service pipe is connected to the vacuum collection branch pipe, and the vacuum collection service pipe is connected to the user's sewage collection unit. Alternatively, the zoned vacuum collection network includes a vacuum collection main pipe and a vacuum collection service pipe. The vacuum collection main pipe is connected to a vacuum pressure pumping device, and at least one vacuum collection service pipe is connected to the vacuum collection main pipe. The vacuum collection service pipe is connected to the user's sewage collection unit. When the zoned vacuum collection network is a dual-pipe network: the zoned vacuum collection network includes at least one black water main pipe, one black water branch pipe, one black water inlet pipe, at least one grey water main pipe, one grey water branch pipe, and one grey water inlet pipe; the black water main pipe and the grey water main pipe are both connected to a vacuum pressure extraction device, at least one black water branch pipe is connected to the black water main pipe, at least one black water inlet pipe is connected to the black water branch pipe, at least one grey water branch pipe is connected to the grey water main pipe, at least one grey water inlet pipe is connected to the grey water branch pipe, and both the black water inlet pipe and the grey water inlet pipe are connected to the user's sewage collection unit; Alternatively, the zoned vacuum collection network includes a black water main pipe, a black water inlet pipe, a grey water main pipe, and a grey water inlet pipe. The black water main pipe and the grey water main pipe are both connected to a vacuum pressure extraction device. At least one black water inlet pipe is connected to the black water main pipe, and at least one grey water inlet pipe is connected to the grey water main pipe. Both the black water inlet pipe and the grey water inlet pipe are connected to the user's sewage collection unit. The vacuum pressure extraction equipment includes at least one extraction tank, a negative pressure extraction pipe, a positive pressure air inlet pipe, a negative pressure water inlet pipe, a positive pressure drain pipe, a venting device, and an extraction control unit. The top of the extraction tank is connected to the negative pressure extraction pipe, the positive pressure air inlet pipe, the venting device, and at least one negative pressure water inlet pipe. A water-blocking valve may or may not be installed at the connection point between the negative pressure extraction pipe and the extraction tank. The negative pressure extraction pipe is connected to the main vacuum power pipe via a vacuum power connection pipe, and a negative pressure extraction valve is installed on the negative pressure extraction pipe. The positive pressure air inlet pipe is connected to the main compressed air pipe via a compressed air connection pipe, and a [missing information - likely a valve or device] is installed on the positive pressure air inlet pipe. The system includes a positive pressure inlet valve and an inlet pressure reducing valve; the negative pressure water inlet pipe is connected to the main vacuum collection pipe, black water main pipe, or grey water main pipe of the zoned vacuum collection network; the negative pressure water inlet pipe is equipped with a negative pressure water inlet valve and may or may not be equipped with an inlet sensor; the positive pressure drain pipe is connected to the bottom of the extraction tank; the positive pressure drain pipe is connected to the main black water drainage pipe and / or the main grey water drainage pipe via a black water drainage connecting pipe and / or a grey water drainage connecting pipe; the positive pressure drain pipe is equipped with a drain check valve and may or may not be equipped with a drain valve; the top of the extraction tank is equipped with a tank pressure sensor; and the inside of the extraction tank is equipped with an extraction tank level sensor. The negative pressure suction valve, positive pressure air inlet valve, water inlet valve, water inlet sensor, drain valve, tank pressure sensor, and pumping tank level sensor are all connected to the pumping control unit, which is connected to the power control unit, user control unit, and intelligent monitoring system. The water-blocking valve includes an upper valve body, a lower valve body, a float, and a sealing ring. The upper valve body has an internal through-hole that connects the upper and lower parts. The diameter of the lower opening of the internal through-hole is smaller than the diameter of the float. The upper end of the upper valve body has an interface for connecting to a negative pressure suction pipe, and the lower end has an outward-facing upper valve body flange. The outer side of the upper valve body flange has an external thread of the upper valve body. The bottom surface of the upper valve body flange is connected to the sealing ring. The sealing ring has a circular hole at its center, and the diameter of the circular hole is smaller than the diameter of the lower opening of the internal through-hole. The lower valve body is cup-shaped with a grid air inlet around its perimeter and an outward-facing lower valve body flange at its upper part. The lower valve body has an upward-facing inner threaded ring along its outer edge. The inner diameter of the inner threaded ring is the same as the outer diameter of the outer threaded ring of the upper valve body. The inner diameter and inner height of the lower valve body below the flange are both greater than the diameter of the float. The float is placed inside the lower valve body. The float's density is less than the density of the sewage. The lower valve body flange presses against the outer edge of the bottom surface of the sealing ring. The upper and lower valve bodies are fixed by threaded connections. The sealing ring is pressed tightly between the upper and lower valve bodies. The water-blocking valve is installed inside the pumping tank, and its upper opening is connected to the port of the negative pressure suction pipe that extends into the pumping tank. The user sewage collection unit includes at least one user sewage collection tank, an intelligent suction valve, a vacuum suction pipe, a collection tank level sensor, and a user control unit. The user sewage collection tank has a user sewage inlet connected to a user sewage discharge pipe at its upper part or top. The intelligent suction valve is located above or near the user sewage collection tank, and includes at least one inlet. A vacuum suction pipe is connected to the inlet, and each vacuum suction pipe extends into the bottom of its respective user sewage collection tank. A collection tank level sensor is installed in the user sewage collection tank, and a suction nozzle is installed at the insertion end of each vacuum suction pipe. The outlet of the intelligent suction valve is connected to the vacuum collection connection pipe, black water connection pipe, or grey water connection pipe of the zoned vacuum collection network. The intelligent suction valve and the collection tank level sensor are connected to the user control unit, which is connected to the suction control unit and the intelligent monitoring system. The user sewage collection tank is a single-compartment septic tank or a double-compartment or triple-compartment septic tank formed by setting partitions. Flow pipes connecting opposite sides of the partitions are provided on the partitions. The intelligent suction valve includes a suction valve and an intelligent actuator connected to the suction valve; When the intelligent suction valve is a three-position three-way valve with two inlets, one outlet and an intelligent electric drive device: the suction valve is a T-type three-way ball valve and the intelligent actuator is a three-position three-way valve intelligent electric drive device. The intelligent electric drive device for the three-position three-way valve includes an actuator chassis, a geared motor, a motor bracket, a coupling, a valve position sensor, a three-way valve controller, a valve cover, and a sealing gasket. The actuator chassis has a central hole and downward-facing vertical flanges of a certain height around its perimeter. The lower edge of the vertical flanges has outward-facing horizontal flanges. The actuator chassis is connected from above to the actuator bracket of a T-type three-way ball valve. The valve shaft of the T-type three-way ball valve extends upward through the central hole of the actuator chassis and above the surface of the actuator chassis. The motor bracket is fixed to the actuator chassis and has a certain height. The motor bracket has a circular hole aligned vertically with the central hole. The geared motor is fixed to the motor bracket, and its rotating shaft extends downward through the circular hole and below the upper surface of the motor bracket. The rotating shaft is coaxially connected to the valve shaft of the T-type three-way ball valve via a coupling. The valve position sensor, The three-way valve controller is fixed on the motor bracket or actuator chassis, and there is at least one valve position sensor. The coupling has a radially extending paddle that contacts and connects with the valve position sensor. The valve cover is an inverted cup-shaped cover with an outward-facing upper horizontal flange at the lower opening, the size of which matches the size of the actuator chassis. The valve cover is fastened to the actuator chassis, with the upper and lower horizontal flanges aligned vertically and pressing against each other. A sealing gasket is provided between the upper and lower horizontal flanges, and the upper horizontal flange, sealing gasket, and lower horizontal flange are fixedly connected. The geared motor, motor bracket, coupling, valve position sensor, and three-way valve controller are located inside the valve cover. The three-way valve controller is connected to the valve position sensor and the user control unit; alternatively, the three-way valve controller is connected to the valve position sensor, the collection tank level sensor, and the user control unit. The actuator chassis may or may not have a water-soaking electrode extending downwards from the chassis. The top of the water-soaking electrode extends below the lower horizontal flange of the actuator chassis. The water-soaking electrode is connected to the three-way valve controller. When the intelligent suction valve is a micro-controlled negative pressure pneumatic angle valve with one inlet and one outlet: the suction valve is a Y-type angle valve and the intelligent actuator is a micro-controlled negative pressure actuator; The Y-type angle valve includes a Y-type valve body, a sealing gland, and a valve stem. The Y-type valve body includes an inlet end, an outlet end, and a blocking end. The inlet end and the outlet end are located on the same axis. The inlet end and the outlet end are respectively connected to an inlet elbow and an outlet elbow. A negative pressure air vent is provided at the top of the outlet elbow. An obliquely arranged flow hole is provided between the inlet end and the outlet end. The blocking end is provided with a hollow connecting column. A through hole is provided inside the hollow connecting column along its axial direction. There is an angle between the axis of the through hole and the axis of the inlet end and the outlet end. The sealing gland is located upstream of the flow hole and directly opposite the flow hole. The valve stem is located in the through hole and is slidably connected to the hollow connecting column. A sealing ring is provided between the valve stem and the hollow connecting column. The inner end of the valve stem is perpendicularly connected to the sealing gland, and the outer end extends out of the hollow connecting column and is provided with a valve stem nut. The micro-controlled negative pressure actuator includes a concave base, a convex top cover, a diaphragm, a compression spring, a negative pressure air inlet pipe, a short air extraction / discharge pipe, a two-position three-way solenoid valve, and a negative pressure valve controller. The concave base has inlet and outlet holes, an outwardly flanged edge, and a central hole with a diameter larger than the diameter of the outer end of the valve stem. The outer end of the valve stem passes through the central hole and extends into the concave base. The concave base is hollow. The connecting column is fixedly connected; the diaphragm has a central hole, the diaphragm presses against the flange of the base, the outer end of the valve stem passes through the central hole, and a pressure plate is provided on each side of the central hole. The valve stem nut is pressed and fixed to the valve stem by the pressure plates on both sides of the diaphragm; the convex top cover is provided with a venting nozzle, and the outer edge of the convex top cover has an outward-facing flange, the flange of the top cover is the same size as the flange of the base, and the flange of the top cover presses against the edge of the diaphragm. The diaphragm and concave base are fixedly connected; a vacuum suction chamber is formed between the convex top cover and the diaphragm; the space between the concave base and the diaphragm is connected to the atmosphere through the base's air inlet and outlet holes; the diaphragm can move back and forth along the valve stem axis at a certain amplitude between the concave base and the convex top cover; the two ends of the compression spring are respectively connected to the inner surface of the center of the convex top cover and the outer end of the valve stem; the compression spring is in a compressed state; one end of the negative pressure air vent pipe is connected to the negative pressure air vent nozzle on the water outlet elbow, and the other end is connected to the air outlet A of the two-position three-way solenoid valve; one end of the air extraction and discharge short pipe is connected to the air extraction and discharge nozzle, and the other end is connected to the air inlet P of the two-position three-way solenoid valve; the negative pressure air vent pipe is equipped with an air vent check valve; the exhaust hole R of the two-position three-way solenoid valve is connected to the atmosphere; the negative pressure valve controller is connected to the two-position three-way solenoid valve and the user control unit, or the negative pressure valve controller is connected to the two-position three-way solenoid valve, the collection tank level sensor, and the user control unit. The water inlet elbow is connected to the vacuum suction pipe, and the water outlet elbow is connected to the vacuum collection service pipe, black water service pipe, or grey water service pipe. The suction nozzle is a negative pressure suction device with buoyancy isolation, including a nozzle shell, a water-blocking weir, and a suction short pipe; the water-blocking weir is located at the lower middle position of the nozzle shell, and its bottom is fixedly connected to the bottom of the nozzle shell, and both ends of the water-blocking weir are fixedly connected to the side wall of the nozzle shell. The water-blocking weir and the side wall of the faucet shell on one side form a pumping chamber, and a grid water inlet is provided at the lower part of the faucet shell on the other side of the water-blocking weir; or, the water-blocking weir is cylindrical, the internal space of the water-blocking weir forms a pumping chamber, and a grid water inlet is provided around the lower part of the faucet shell on the outer side of the water-blocking weir. The top of the faucet housing is provided with a suction pipe interface and a pressure balance pipe interface. The top of the pumping chamber is open. The upper end of the suction short pipe is connected to the suction pipe interface from the bottom side. The lower end of the suction short pipe extends into the pumping chamber through the open end, and the lower end of the suction short pipe is a certain distance away from the bottom of the pumping chamber. The upper edge of the weir is higher than the upper edge of the grid inlet and a certain distance away from the inner top surface of the faucet housing. The grid inlet is provided with a trash rack. A pressure balance pipe is connected to the pressure balance pipe interface. The buoyancy-isolated negative pressure suction device is installed at the bottom of the user's sewage collection tank. The vacuum suction pipe is connected to the suction pipe interface from above. The lower end of the pressure balance pipe is connected to the pressure balance pipe interface. The upper end of the pressure balance pipe extends above the highest water level line of the user's sewage collection tank and is connected to the atmosphere. The buoyancy-isolated negative pressure suction device can be integrated with the liquid level sensor in the collection tank, and the pressure balance tube also serves as a protective sleeve. The intelligent monitoring system includes an Internet of Things (IoT) platform and a server connected to the IoT platform; the power control unit, the exhaust control unit, and the user control unit are all connected to the IoT platform; the IoT platform is an IoT cloud platform or a local area network (LAN) platform; the server is a cloud server or a local area server.

2. The partitioned vacuum pressure drainage system according to claim 1, characterized in that: The vacuum power unit includes a vacuum pump unit, a regulating filter tank, a negative pressure inlet pipe, an inlet connecting pipe, an exhaust connecting pipe, and a negative pressure sensor. The regulating filter tank has a filter layer inside. A negative pressure inlet pipe is connected to the regulating filter tank on the inlet side of the filter layer. The negative pressure inlet pipe is connected to the main vacuum power pipe. A negative pressure inlet valve may or may not be installed on the negative pressure inlet pipe. The regulating filter tank on the outlet side of the filter layer is connected to the inlet of the vacuum pump unit via the inlet connecting pipe. An inlet check valve is installed on the inlet connecting pipe. An exhaust connecting pipe is connected to the outlet of the vacuum pump unit and is open to the atmosphere. A negative pressure sensor is installed on the regulating filter tank or the inlet connecting pipe. The negative pressure sensor, the vacuum pump unit, and the negative pressure inlet valve are all connected to the power control unit. The vacuum power unit also includes an exhaust gas treatment device. The exhaust connection pipe is connected to the air inlet of the exhaust gas treatment device, and the air outlet of the exhaust gas treatment device is connected to an exhaust gas discharge pipe, which is connected to the atmosphere.

3. The partitioned vacuum pressure drainage system according to claim 2, characterized in that: The vacuum pump unit includes a vacuum pump discharge pipe, a water supply pipe, an upper water tank, a lower water tank, a circulating water pump, an upper water pipe, an overflow pipe, a drain pipe, a water tank level sensor, and a water temperature sensor. The vacuum pump discharge pipe is connected to the upper water tank, and the upper water tank is connected to an overflow pipe that communicates with the lower water tank. The lower water tank is located below the frost line, and the circulating water pump is located at the bottom of the lower water tank. The upper and lower ends of the upper water pipe are connected to the upper water tank and the circulating water pump, respectively. An upper water tank drain valve is located at the bottom of the upper water tank. A water tank level sensor and a water temperature sensor are installed inside the upper water tank, and a water tank vent is located at the top of the upper water tank and connected to an exhaust pipe. The circulating water pump, the upper water tank drain valve, the water ring pump drain valve, the water tank level sensor, and the water temperature sensor are all connected to the power control unit. The vacuum pump unit also includes a heating unit and a temperature sensor. The heating unit is located at a low position within the pump station enclosure structure, and the temperature sensor is located within the pump station enclosure structure. The heating unit and the temperature sensor are connected to the power control unit. or, The vacuum pump unit includes a vacuum pump discharge pipe, a water supply pipe, a circulating water tank, a cooling circulating pump, a cooling circulating water pipe, and a water spray layer. The circulating water tank contains a water spray layer, which is positioned a certain distance from both the top of the circulating water tank and the water level line inside the tank. The top of the circulating water tank has a water tank vent, which is connected to an vent connection pipe. The vacuum pump discharge pipe is connected to the circulating water tank between the water spray layer and the water level line. The water supply pipe is connected to the circulating water tank below the water level line. One end of the cooling circulating water pipe is connected to the bottom of the circulating water tank, and the other end is connected to the top. A spray nozzle pointing towards the center of the water spray layer is located at the pipe opening where the cooling circulating water pipe connects to the circulating water tank. A cooling circulating pump is mounted on the cooling circulating water pipe. The circulating water tank contains a water level sensor and a water temperature sensor. The cooling circulating pump, water level sensor, and water temperature sensor are all connected to a power control unit. The vacuum pump unit also includes a drain pipe. A reversing valve is installed on the cooling circulating water pipe above the cooling circulating pump. One end of the drain pipe is connected to the reversing valve, and the other end passes through the pump station enclosure structure and is connected to the atmosphere.

4. The partitioned vacuum pressure drainage system according to claim 3, characterized in that: The venting device includes a venting valve and a venting pipe. One end of the venting pipe is connected to the top of the extraction tank, and the other end of the venting pipe is directly connected to the atmosphere or connected to the atmosphere via a silencer. The venting valve is installed on the venting pipe and is connected to the extraction control unit. Alternatively, the venting device includes a venting valve, a venting pipe, a vacuum generator, a bypass pipe, and a bypass check valve. One end of the venting pipe is connected to the top of the extraction tank, and the other end is connected to the air inlet of the vacuum generator. A venting valve is installed on the venting pipe. The suction port of the vacuum generator is connected to the bypass pipe. The bypass pipe is connected to the negative pressure water inlet pipe and is located upstream of the negative pressure water inlet valve. A bypass check valve is installed on the bypass pipe. The exhaust port of the vacuum generator is directly connected to the atmosphere or connected to the atmosphere via a silencer. The venting valve is connected to the extraction control unit.

5. The partitioned vacuum pressure drainage system according to claim 4, characterized in that: The liquid level sensor for the collection tank includes a sensor rod, a liquid level switch, and a protective cylinder. The protective cylinder is installed inside the user's sewage collection tank and fixed to the side wall near the inspection port of the collection tank by a liquid level device fixing bracket installed at the top. The bottom end of the protective cylinder extends to the bottom of the tank and is a certain distance away from the bottom. The top end is a certain distance above the highest liquid level of the user's sewage collection tank and is connected to the atmosphere. The liquid level inside the protective cylinder can rise and fall with the liquid level of the user's sewage collection tank, and the liquid levels inside and outside the cylinder are equal. The sensor rod is installed inside the protective cylinder and is hung on the top opening of the protective cylinder by a fixing bracket installed at the top, or directly hung on the side wall near the inspection port of the collection tank. The sensor rod is provided with at least one sensor fixing leg, and a liquid level switch is fixed on the sensor fixing leg. The sensor rod can be lifted out or put in the protective cylinder. or, The collection tank level sensor includes a sensor pole and a level switch. The sensor pole is installed inside the user's sewage collection tank and is hung on the side wall near the inspection port of the collection tank by a fixing bracket installed at the top. The bottom end of the sensor pole extends to the bottom of the tank and is a certain distance away from the bottom. The top end is a certain distance above the highest liquid level of the user's sewage collection tank. At least one sensor fixing leg is provided on the sensor pole, and a level switch is fixed on the sensor fixing leg. The liquid level switch is connected to the user control unit, or the liquid level switch is connected to the user control unit via a three-way valve controller or a negative pressure valve controller.

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