A ventilation and sewage discharge device for vacuum well equipment cavity

Abstract

The present invention relates to a ventilation and sewage discharge device for a vacuum well equipment cavity, comprising a cylinder and a pipe clamp valve connected to the cylinder and used for realizing on-off of the cylinder interior; a main flow channel, a side flow channel connected to the upper and lower ends of the main flow channel, and a sensor pipeline connected to the lower end of the side flow channel are jointly formed inside the cylinder and the pipe clamp valve; a sensor interface connected to the sensor pipeline is arranged on the outer wall of the cylinder; the pipe clamp valve is coaxially arranged with the cylinder and used for controlling the on-off of the main flow channel; the present invention is applied to a manhole cover ventilation type vacuum well, which can not only ensure reasonable ventilation inside the vacuum well, but also solve the problem of sewage detection and sewage discharge on the manhole cover, thereby coping with different climatic conditions and avoiding the problem that a large amount of accumulated water flows into the vacuum well under severe weather conditions, causing the internal equipment to work continuously, increase energy consumption, and reduce service life.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum sewage continuous collection, temporary storage and periodic transportation system, the vacuum sewage continuous collection, temporary storage and periodic transportation system is a vacuum well system, which has a temporary sewage collection tank which adopts a vacuum sewage valve for periodic sewage discharge, and can transport the sewage in the sewage collection tank to the downstream vacuum collection pipeline network, and is controlled by a control device using a pressure difference drive control method. A sealed manhole cover with a vent is arranged at the upper end of the vacuum well, in order to facilitate the ventilation function of the internal equipment, but at the same time ensure the ventilation function, it is necessary to ensure that the vacuum well can achieve automatic detection and automatic sewage discharge under harsh environmental conditions. Therefore, the present invention particularly relates to a vacuum well equipment cavity ventilation and sewage discharge device. Background Art

[0002] In the field of vacuum domestic sewage collection, transportation and treatment technology, vacuum domestic sewage collection is the most advanced technical field, which includes the following technical application scenarios: using a pipe based on the principle of vacuum or negative pressure air flow transmission force that inhales air at one end and discharges air at the other end to transport domestic sewage from a building to a distant sewage pool or vacuum collection and transportation pipeline system; a typical technical solution to achieve this application scenario is to use a temporary sewage storage tank, which has an inlet connected to the sewage outlet of the building, and a sewage suction port connected to the vacuum sewage transportation pipeline, and connect the sewage suction port and the vacuum sewage transportation pipeline. The interior of the sewage storage tank is divided into a sewage chamber and an equipment chamber by a partition, wherein the equipment chamber is used to place core control components: a vacuum sewage valve, a pneumatic controller and a liquid level sensor, wherein the vacuum sewage valve has a control system or device, and its basic operating procedure is that when the sewage water level in the sewage chamber reaches a first preset value, the pneumatic controller applies a vacuum force to the vacuum sewage valve to suck away and drain the sewage, until the sewage water level in the sewage chamber drops to another preset value, the pneumatic controller closes the vacuum sewage valve, and the above system is defined as a vacuum sewage continuous collection, temporary storage and periodic transportation system, that is, a vacuum well system.

[0003] Due to technological development and a deeper understanding of functions and needs, vacuum wells have been transformed from the initial non-ventilated technical methods to active ventilation solutions after being equipped with pneumatic controllers. For example, for vacuum wells with pneumatic controllers that are not actively ventilated, the well-known representative technical solutions can refer to the U.S. invention patent with patent number US3998736, which points out that the technical characteristics of the vacuum well it uses are that the vacuum drain valve and pneumatic controller are located in an independent equipment room outside the sewage chamber of the vacuum well, and both use sealed manhole covers to ensure that the equipment room and the sewage tank room will not be affected by ground sewage, especially heavy rain; however, since the ventilation function is the main function of the pneumatic controller and the vacuum drain valve in the manhole cover ventilation vacuum well, the main consideration is to avoid the problem of water blockage caused by the existence of the lifting bend in the gravity flow pipeline of the vacuum well sewage tank ventilation, which in turn causes the problem of low ventilation function efficiency. In order to solve the problem of direct ventilation in vacuum well equipment chambers instead of using sewage tanks for ventilation indirectly, vacuum wells capable of active ventilation were invented. Since the vacuum well equipment chambers are set to a sealed and dry environment to prevent sewage from entering the pneumatic controller, there are two main ways to use vacuum well equipment chambers for direct ventilation. One is ventilation with ventilation pipes near the vacuum well. This solution is to place the vent or pipeline outside the manhole cover. The other is manhole cover ventilation, which requires ventilation holes to be added to the manhole cover to achieve ventilation inside the vacuum well. However, the manhole cover is placed on the ground, and various vehicles may pass by it, even in heavy rain. The problems it has are also very typical. The specific defects are as follows:

[0004] (1) In rainy weather, rainwater will enter the equipment room through the vents on the manhole cover, and sewage will enter along the air pipe of the pneumatic controller, causing the pneumatic controller to malfunction;

[0005] (2) In rainstorm weather, there will be heavy rain for several hours or even several days, resulting in serious water accumulation on the ground. If all the sewage is discharged into the sewage chamber of the vacuum well through the drainage pipe, the vacuum well will inevitably work continuously, which will increase the energy consumption of the vacuum collection and transportation equipment and reduce its life. At this time, the vacuum well needs to be shut down; after the rainstorm, the water on the ground is cleared, and the vacuum well needs to be reset in time to allow it to start working normally; in shower weather, the rainfall is concentrated but small. It starts to rain heavily and stops after a while, but there is a small amount of water on the ground. At this time, it is still necessary to ensure that the vacuum well can be reset to work normally;

[0006] (3) The internal device of the vacuum well transmits signals through the liquid level sensor. When encountering severe weather conditions, the liquid level pressure sensor on the well cover will be affected by the mud and water on the well cover. The mud will settle at the bottom and block the sewage outlet, making it impossible for the mud and water to be discharged into the sewage chamber.

[0007] However, vacuum wells are used to collect wastewater generated by residents' daily living water, mainly from kitchen and bathroom sewage. If kitchen and bathroom sewage cannot be emptied in time, the unusable vacuum wells will seriously affect the convenience of residents' daily life; however, due to the short development of technology in China, the technical accumulation is relatively weak, and overall it is particularly not optimistic. The more representative patent technology analysis is as follows:

[0008] (1) Known technologies: Chinese invention patent CN105507410B, a sewage vacuum collection and treatment system; Chinese invention patent CN105484351B, a sewage collection and automatic discharge well; Chinese utility model patent CN208379743U, a sewage collection and automatic discharge well. The technical solutions adopted by the inventions are similar, and basically use a mechanical electronic controller, a liquid level sensor composed of a sensing tube and a sensing valve, a collection tank, a sealed well cover, and a gravity sewage collection inlet pipe layout method; wherein the electronic controller is located in a control column installed independently of the vacuum well on the ground, the liquid level sensor is a mechanical or electronic liquid level sensor, such as a float level gauge, and the collection tank is located at the bottom to shield the sludge and collect sewage, thereby reducing the impact on the sensing tube in the liquid level sensor to a certain extent.

[0009] The problems with the above technical solutions are that the lever component in the float level gauge is easily affected by impurities in the sewage, such as hair entanglement causing the lever to fail to move, so its reliability is poor, and the spare manual sewage pipe increases the cost of the product and reduces reliability; the existence of the filter screen increases the flow resistance of sewage with impurities, especially the second scheme divides the vacuum collection well sewage pool into two independent chambers and uses the filter screen to filter the sewage. These measures are not conducive to the sewage in the sewage tank carrying gas, liquid and solid impurities in the sewage under the power of gravity flow to flow into the suction port and be discharged into the vacuum conveying pipeline network, and are even more unfavorable for automatic processing and control. More seriously, since the manhole cover is sealed, the vacuum sewage valve needs to further inhale a certain amount of air after emptying the sewage in the sewage tank to achieve gas-liquid mixing in the best proportion, which is conducive to the high-speed transportation of the subsequent sewage in the vacuum well; however, since the technical solution cannot replenish the additional required air from the wellhead in a timely and effective manner, the air pressure above the sewage in the vacuum well is less than the atmospheric pressure, which will affect the action of the liquid level and air pressure sensor, and even cause the controller to operate incorrectly, thereby affecting the use of the vacuum well. Moreover, the presence of electrical components also reduces the reliability of the equipment, especially the air in the vacuum wells buried underground is mostly dark and humid, which greatly reduces the battery life. In addition, the subsequent maintenance and replacement of the product are extremely troublesome.

[0010] (2) Known technology: Chinese invention patent CN102121271B, for a water well in a vacuum drainage system, adopts a technical solution that uses an electronic controller, a liquid level sensor consisting of an induction tube and an induction valve, a collection tank, a sealed manhole cover, and a horizontal sewage collection inlet pipe layout method; wherein the electronic controller is located in a control column installed independently from the vacuum well on the ground, the liquid level sensor is a mechanical or electronic liquid level sensor, and the collection tank is located at the bottom to shield sludge and collect sewage, thereby reducing the impact on the induction tube in the liquid level sensor to a certain extent.

[0011] The problem with this technical solution is that some electrical components in the single-chip microcomputer controller and the electrical liquid level sensor are easily affected by sewage and fail, and the battery as a power source needs to be replaced on time. The wiring is troublesome and costly when the mains is used as a power source. More importantly, the configuration of electricity and power supply increases safety hazards and costs, the labor intensity of maintenance, and it is easy to cause electric shock, especially during inspection and maintenance and in the case of man-made damage. The control column protruding from the ground occupies installation space, affects the appearance of the city, affects road traffic, and is in danger of being damaged by vehicle collision. The existence of the collection tank is not conducive to the entry of air into the sewage collection pipeline system, reduces the efficiency of sewage transportation, and thus increases the operating cost of the vacuum sewage transportation system. The horizontal sewage collection inlet pipeline layout method is used to guide the sewage from the building to the sewage tank below the vacuum well with a pipe. Although the pipe layout efficiency is high, it will cause a large back pressure in the vacuum well water inlet pipeline, a low water flow rate, and easy blockage.

[0012] (3) Known technology: Chinese utility model patent CN208777412U, fiberglass modular vacuum collector, adopts a technical solution of using an electronic controller, a liquid level pressure sensor, a sealed manhole cover, a horizontal sewage collection inlet pipe layout method, and a split vacuum well structure; wherein the electronic controller is located in a control column installed independently of the vacuum well on the ground; modular structure, and the equipment cavity and the sewage cavity are sealed; split vacuum well structure, the main structural feature of the vacuum well is that it has a bottom-mounted sewage collection tank that uses a vacuum drain valve for periodic sewage discharge, and an equipment tank located above the collection tank for storing equipment such as the vacuum drain valve, and the collection tank and the equipment tank can be coaxial integrated or split, or non-coaxial integrated or split.

[0013] The problems with this technical solution are:

[0014] 1. Some electrical components in the single-chip controller are easily affected by sewage and fail, and the battery as a power source needs to be replaced on time. The wiring of the mains as a power source is troublesome and costly. More importantly, the configuration of electricity and power supply increases safety hazards and costs, the labor intensity of maintenance, and it is easy to cause electric shock, especially during inspection and maintenance and in the case of human damage;

[0015] 2. The control column protruding from the ground occupies installation space, affects the appearance of the city, affects road traffic, and is in danger of being damaged by vehicle collisions.

[0016] 3. The sealing design of the equipment cavity and the sewage cavity seems to be conducive to preventing the sewage in the sewage cavity from entering the equipment cabin, and the equipment cabin is clean and fresh; but the consequence of this is that it is not conducive to the air entering the sewage collection pipeline system through the sewage suction port, realizing the essence of the vacuum conveying technology of three-phase gas-liquid-solid turbulent conveying of air, sewage and solid waste, reducing the efficiency of sewage conveying, and thus increasing the operating cost of the vacuum sewage conveying system;

[0017] 4. The horizontal sewage collection inlet pipe layout method is used to guide the sewage from the building to the sewage tank below the vacuum well with a pipe. Although the pipe layout efficiency is high, it will cause the vacuum well inlet pipe to have a large back pressure, a low water flow rate, and easy blockage;

[0018] 5. The split vacuum well structure is complex and expensive, especially the sewage tank is blocked and it is inconvenient to disassemble and repair. What is more serious is that the sewage collection tank has a small capacity, which leads to frequent startup of the vacuum well and shortened life of the controller and vacuum drain valve.

[0019] (4) Known technology: Chinese invention patent application CN108488443A, a liquid level pneumatic control valve and a corresponding negative pressure drainage system and a negative pressure drainage control method, adopts a technical solution of a pneumatic controller using high and low liquid level pressure sensors; wherein there are two high and low liquid level pressure sensors, one for high level liquid level pressure detection and the other for low level pressure detection.

[0020] The problems with this technical solution are: the high and low liquid level pressure sensors take up a large space and are costly; although the pneumatic controller can be adjusted with a delay, it is necessary to disassemble the pneumatic controller to replace two of its springs, and the design is too cumbersome; and the pneumatic controller does not solve the problem of water vapor corrosion on the controller valve core; the controller cannot solve the problem of controller maloperation caused by liquid level fluctuations; the controller cannot solve the problem of pressure fluctuations at the vacuum air intake port caused by pressure fluctuations in the vacuum pipeline when the vacuum valve is opened, which in turn causes the problem of pneumatic controller malfunction; and the controller cannot solve the problem of diagnosing vacuum valve failures during manual inspections without disassembling the pneumatic controller.

[0021] Therefore, in view of the above-mentioned problems, a reasonable structural design is required to ensure that the ventilated manhole cover can solve the problem of sewage detection and drainage on the manhole cover while ensuring ventilation, so as to realize automatic detection, automatic ventilation and drainage, and finally realize automatic control of the vacuum well. Therefore, the present invention has developed a vacuum well equipment cavity ventilation and drainage device to solve the problems existing in the prior art. After searching, no technical solutions identical or similar to the present invention were found. Summary of the invention

[0022] The purpose of the present invention is to provide a vacuum well equipment cavity ventilation and drainage device to solve the problem in the prior art that the sewage above the manhole cover ventilation vacuum well system cannot be effectively detected and drained, which leads to the problem that the equipment in the vacuum well is prone to paralysis.

[0023] The technical solution of the present invention is: a vacuum well equipment cavity ventilation and sewage discharge device, including a cylinder and a pipe clamp valve connected to the cylinder and used to realize the on-off of the cylinder; the cylinder and the pipe clamp valve together form a main flow channel, a side flow channel connected to the upper and lower ends of the main flow channel, and a sensor pipeline connected to the lower end of the side flow channel; a sensor interface connected to the sensor pipeline is arranged on the outer wall of the cylinder; the pipe clamp valve is coaxially arranged with the cylinder, and is used to control the on-off of the main flow channel.

[0024] Preferably, the pipe clamp valve comprises a valve body, a hose arranged inside the valve body, a pair of clamping assemblies for realizing the opening and closing of the hose, and a control interface for realizing the operation of the pair of clamping assemblies by intermittently introducing air or vacuum; the cylinder comprises a sealing ring, a cover body, a guide tube and a cylinder body which are arranged in sequence above the pipe clamp valve, and a base, a sleeve and a drain pipe which are nested and matched in sequence below the pipe clamp valve; the main flow channel realizes circulation along the central axis direction of the sealing ring, the cover body, the guide tube, the cylinder body, the hose and the drain pipe in sequence, and the inner diameter remains the same; the side flow channel realizes circulation along the central axis direction of the cover body The body, cylinder body, valve body and base are distributed in an annular shape in the circumferential direction and are connected; an overflow port arranged in an annular shape is provided between the lower end surface of the cover body and the upper end surface of the guide tube, which is used to connect the main channel with the upper end of the side channel; a plurality of throttling ports are evenly arranged on the side wall of the sleeve and the drain pipe, which are used to connect the main channel with the lower end of the side channel; the sensor pipeline is distributed in an annular shape along the circumferential direction of the cylinder body and the valve body, and is connected; a plurality of through holes are evenly arranged on the side wall of the base and the inner wall of the valve body, which are used to connect the sensor pipeline with the lower end of the side channel.

[0025] Preferably, the sealing ring, cover body, cylinder body and valve body are nested in sequence from top to bottom, and the guide tube is nested in the upper end of the cylinder body, and the upper end surface does not contact the lower end surface of the cover body, thereby forming an overflow port; the base, sleeve and drain pipe are nested in the lower end of the valve body, and are nested coaxially in sequence from the inside to the outside.

[0026] Preferably, the valve body includes a pipeline cavity arranged along the central axis direction and an installation cavity arranged perpendicular to the central axis direction of the pipeline cavity; the hose is coaxially arranged with the pipeline cavity and nested at the inner wall of the pipeline cavity, and the side wall is opposite to the installation cavity; a pair of clamping assemblies are arranged in the installation cavity, including a corrugated diaphragm, a mounting seat and a cover plate for fixing the edge of the corrugated diaphragm, a chuck fixedly connected to the middle part of the corrugated diaphragm, and a reset spring for resetting the corrugated diaphragm; the mounting seat and the cover plate are both annular structures, coaxially arranged with the installation cavity and nested and fixed in the installation cavity; the edge of the corrugated diaphragm is fixed between the mounting seat and the cover plate, and the middle part is fixedly connected to the chuck by a long rod screw; the chuck moves along the central axis direction of the installation cavity, and the opposite end faces of a pair of chucks are arranged in parallel; the central axis direction of the reset spring is parallel to the movement direction of the chuck, and is arranged in close contact with the inner wall of the installation cavity; a closed cavity connected to the control interface is formed between the outer wall of the hose and the pair of corrugated diaphragms.

[0027] Preferably, the upper end of the hose is nested and fixed between the valve body and the lower end of the barrel, and the lower end is nested and fixed between the valve body and the upper end of the sleeve, and the inner diameter of the hose is the same as the inner diameter of the main channel.

[0028] Compared with the prior art, the advantages of the present invention are:

[0029] (1) The present invention is applied to a manhole cover ventilation type vacuum well, which can not only ensure reasonable ventilation inside the vacuum well, but also solve the problem of sewage detection and drainage on the manhole cover; under normal circumstances, there is no water accumulation above the manhole cover, and the main flow channel is in a normally open state to achieve ventilation; under severe weather conditions, water will accumulate above the manhole cover and flow into the vacuum well along the main flow channel. In this process, the structural design of the present invention and the cooperation with the vacuum well can realize automatic detection of the liquid level, thereby driving the pipe clamp valve to realize the closure of the main flow channel, avoiding the problem that a large amount of accumulated water flows into the vacuum well and causes the internal equipment to work continuously, increasing energy consumption and reducing service life.

[0030] (2) The present invention adopts a reasonable cylindrical structure design and is used in conjunction with a pipe clamp valve, which can effectively solve the problem of internal sludge precipitation when sewage flows in. Since the manhole cover is set on the road surface, the accumulated water generated under severe weather conditions contains dust and sludge. If a traditional valve body, such as a ball valve, a sliding valve, a diaphragm valve, etc., is used, it is easy to cause sludge precipitation and blockage, resulting in the inability to discharge the sludge, thereby affecting the on-off effect of the pipeline. The present invention adopts a pipe clamp valve, and the hose in the pipe clamp valve is used to form a connection with the main channel. When the pipe clamp valve is closed, the sludge in the accumulated water is deposited in the hose. Even if it is deposited on the hose, when the pipe clamp valve is opened again, relying on gravity and the continuous increase in the diameter of the hose in the open state, the precipitated sludge is effectively and smoothly discharged without causing blockage. More importantly, the pipe clamp valve has a good tolerance for silk impurities such as hair, and will not cause the problem of poor closure of the pipe clamp valve.

[0031] (3) The inner diameter of the main flow channel formed by the cylinder and the hose is consistent, the internal flow resistance is small, no dirt is residual, and the dirt remaining on the core components before and after the pipe clamp valve is reduced as much as possible, effectively avoiding the corrosion of the pipe clamp valve by the residual dirt, thereby prolonging its service life.

[0032] (4) When extreme weather occurs, the present invention can avoid the long-term operation of the vacuum well, which would lead to huge energy consumption and high operating costs, and avoid the complete paralysis of the internal equipment, which would lead to high labor costs for repairing the vacuum well, as well as abnormal personnel flow of the maintenance team caused by the huge labor intensity; at the same time, since the accumulated water on the manhole cover can flow into the sewage cavity and be discharged, it is conducive to the timely emptying of a small amount of accumulated water near the manhole cover, avoiding interference with the sidewalk and affecting traffic, and is conducive to a clean and refreshing environment; it is also conducive to avoiding the breeding of mosquitoes and flies and the spread of viruses, and can be committed to building a "green and livable" humanistic ecological environment of "harmony between man and nature". BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0034] Figure 1 This is a schematic diagram of the appearance structure of a vacuum well equipment cavity ventilation and sewage discharge device according to the present invention;

[0035] Figure 2 A cross-sectional view of a vacuum well equipment cavity ventilation and sewage discharge device according to the present invention;

[0036] Figure 3 This is a schematic diagram of the appearance structure of the pipe clamp valve of the present invention;

[0037] Figure 4 It is a cross-sectional view of the pipe clamp valve of the present invention along a direction perpendicular to the central axis of the control interface;

[0038] Figure 5 It is a cross-sectional view of the pipe clamp valve of the present invention along the horizontal direction;

[0039] Figure 6 It is a cross-sectional structural diagram of the cylinder and the valve body of the present invention;

[0040] Figure 7 It is a cross-sectional view of the connection structure of the sealing ring, the cover body, the guide tube and the barrel body of the present invention;

[0041] Figure 8 It is a cross-sectional view of the installation structure of the base, sleeve and drain pipe of the present invention;

[0042] Fig. 9 It is a structural cross-sectional view of the base, sleeve and drain pipe of the present invention;

[0043] Fig.10 is a cross-sectional view of the valve body of the present invention;

[0044] Fig.11 A flow line diagram of the base, sleeve and drain pipe of the present invention;

[0045] Fig.12 This is a schematic diagram of the installation structure of a vacuum well equipment cavity ventilation and sewage discharge device according to the present invention;

[0046] Fig.13 It is a flow route diagram of air and dust of a vacuum well equipment cavity ventilation and sewage discharge device described in the present invention under the weather condition that there is no water accumulation above the well cover;

[0047] Fig.14 A flow diagram of internal hot air in a vacuum well equipment cavity ventilation and drainage device according to the present invention under precipitation conditions where the ground is solid and has poor mobility;

[0048] Fig.15 , Fig.16 and Fig.17 The present invention provides a vacuum well equipment cavity ventilation and sewage discharge device, and a sewage flow route diagram under different conditions when there is a large amount of persistent water accumulation on the ground.

[0049] Among them: 1. Cylinder;

[0050] 01, main channel, 02, side channel, 03, sensor pipeline;

[0051] 11. sealing ring, 12. cover body, 13. guide tube, 14. barrel, 15. base, 16. sleeve, 17. drain pipe, 18. sensor interface;

[0052] 131. Overflow port;

[0053] 151, a second guide hole, 152, a guide groove;

[0054] 161, throttle;

[0055] 2. Pipe clamp valve;

[0056] 21. valve body, 22. hose, 23. clamping assembly, 24. control interface;

[0057] 211, pipeline cavity, 212, installation cavity, 213, positioning cavity, 214, first guide hole;

[0058] 231, mounting seat, 232, cover plate, 233, corrugated diaphragm, 234, chuck, 235, return spring, 236, closed cavity;

[0059] 3. Vacuum well;

[0060] 31. Manhole cover, 32. Vent, 33. Partition, 34. Equipment cavity, 35. Sewage cavity. DETAILED DESCRIPTION

[0061] The present invention is further described in detail below in conjunction with specific embodiments:

[0062] like Figure 1 As shown, a vacuum well equipment cavity ventilation and sewage discharge device comprises a cylinder 1 and a pipe clamp valve 2 connected to the cylinder 1 and used to realize the internal opening and closing of the cylinder 1; Figure 2 As shown, a main flow channel 01, a side flow channel 02 connected to the upper and lower ends of the main flow channel 01, and a sensor pipeline 03 connected to the lower end of the side flow channel 02 are formed inside the cylinder 1 and the tube clamp valve 2; a sensor interface 18 connected to the sensor pipeline 03 is arranged on the outer wall of the cylinder 1; the tube clamp valve 2 is coaxially arranged with the cylinder 1, and is used to control the on-off of the main flow channel 01.

[0063] like Figure 3 , Figure 4 and Figure 5 As shown, the pipe clamp valve 2 includes a valve body 21, a hose 22 arranged inside the valve body 21, a pair of clamping components 23 for realizing the opening and closing of the hose 22, and a control interface 24 for realizing the operation of the pair of clamping components 23 by intermittently passing air or vacuum; the hose 22 can be made of rubber material; Figure 4 As shown, the valve body 21 includes a pipeline cavity 211 arranged along the central axis direction and an installation cavity 212 arranged perpendicular to the central axis direction of the pipeline cavity 211; the hose 22 is coaxially arranged with the pipeline cavity 211 and nested at the inner wall of the pipeline cavity 211, the upper end of the hose 22 is nested and fixed between the valve body 21 and the lower end of the barrel, and the lower end is nested and fixed between the valve body 21 and the upper end of the sleeve, and the inner diameter of the hose 22 is the same as the inner diameter of the main channel 01, and the side wall is opposite to the installation cavity 212; a pair of clamping components 23 are arranged in the installation cavity 212, as shown in FIG. Figure 5As shown, its structure includes a corrugated diaphragm 233, a mounting seat 231 and a cover plate 232 for fixing the edge of the corrugated diaphragm 233, a clamp 234 fixedly connected to the middle of the corrugated diaphragm 233, and a reset spring 235 for resetting the corrugated diaphragm 233; the mounting seat 231 and the cover plate 232 are both annular structures, coaxially arranged with the mounting cavity 212 and nested and fixed in the mounting cavity 212; the edge of the corrugated diaphragm 233 is fixed between the mounting seat 231 and the cover plate 232, and the middle part is fixedly connected to the clamp 234 by a long rod screw; the clamp 234 moves along the central axis direction of the mounting cavity 212, and a pair of opposite end faces of the clamp 234 are arranged in parallel; the central axis direction of the reset spring 235 is parallel to the movement direction of the clamp 234, and is arranged in contact with the inner wall of the mounting cavity 212; a closed cavity 236 connected to the control interface 24 is formed between the outer wall of the hose 22 and the pair of corrugated diaphragms 233.

[0064] The working principle of the tube clamp valve 2 is as follows: air is intermittently introduced into the control interface 24 or a vacuum is formed. When air is introduced into the control interface 24, the air pressure at both ends of the corrugated diaphragm 233 is the same, and it is in a reset state under the action of the reset spring 235. The pair of clamps 234 do not exert force on the hose 22, so that the hose 22 is in a normally open state; when a vacuum is formed at the control interface 24, a vacuum is formed in the closed cavity 236. At this time, the air pressure at the outer end of the corrugated diaphragm 233 is greater than the air pressure at the inner end, thereby pushing the corrugated diaphragm 233 to drive the pair of clamps 234 to move toward one side of the hose 22 and clamp the hose 22, so that the hose 22 is in a normally closed state.

[0065] like Figure 6 As shown, the cylinder 1 includes a sealing ring 11, a cover 12, a guide tube 13 and a cylinder body 14 which are arranged in sequence above the pipe clamp valve 2, and a base 15, a sleeve 16 and a drain pipe 17 which are nested and matched in sequence below the pipe clamp valve 2; Figure 2 As shown, the main flow channel 01 is circulated along the central axis of the sealing ring 11, the cover body 12, the guide tube 13, the barrel 14, the hose 22 and the drain pipe 17 in sequence, and the inner diameter remains the same; the side flow channel 02 is distributed in an annular shape along the inner circumference of the cover body 12, the barrel 14, the valve body 21 and the base 15, and is connected; the sensor pipeline 03 is distributed in an annular shape along the inner circumference of the barrel 14 and the valve body 21, and is connected, the upper end extends to the upper end surface of the barrel 14, the lower end extends to the lower end surface of the valve body 21, and both the upper and lower ends are covered with sealing plates; in more detail, the connection relationship between the main flow channel 01, the side flow channel 02 and the sensor pipeline 03 is as follows:

[0066] First, the connection between the upper end of the main channel 01 and the side channel 02: First, as Figure 7As shown, the sealing ring 11, the cover body 12, the cylinder body 14 and the valve body 21 are nested and matched in sequence from top to bottom, and the guide tube 13 is nested in the upper end of the cylinder body 14, and the upper end surface does not contact the lower end surface of the cover body 12, thereby forming an annular overflow port 131 for realizing the connection between the main channel 01 and the upper end of the side channel 02; to ensure the smooth inflow of sewage, the upper end of the main channel 01 in the sealing ring 11 and the upper end of the main channel 01 in the guide tube 13 are both trumpet-shaped.

[0067] Second, the connection between the lower end of the main channel 01 and the side channel 02: First, as Figure 8 As shown, the base 15, the sleeve 16 and the drain pipe 17 are nested at the lower end of the valve body 21 and are coaxially nested in sequence from the inside to the outside; Fig. 9 As shown, a plurality of throttle openings 161 are evenly arranged on the side walls of the sleeve 16 and the drain pipe 17, which are used to achieve the communication between the main flow channel 01 and the lower end of the side flow channel 02. The specific flow route is as follows Fig.11 shown.

[0068] Third, the connection between the lower end of the side channel 02 and the sensor pipeline 03: a plurality of through holes are evenly arranged on the side wall of the base 15 and the inner wall of the valve body 21, and the through holes include a first guide hole 214 and a second guide hole 151, which are used to realize the connection between the sensor pipeline 03 and the lower end of the side channel 02. More specifically, Fig.10 As shown, the lower end of the valve body 21 is provided with a positioning cavity 213 for nesting the base 15, the sleeve 16 and the drain pipe 17, and a plurality of first flow guide holes 214 connected to the sensor pipeline 03 are evenly arranged on the side wall of the positioning cavity 213. Fig. 9 As shown, a plurality of second flow guide holes 151 are evenly distributed on the side wall of the base 15, and a flow guide groove 152 arranged in an annular shape is provided on the outer wall at a height aligned with the second flow guide holes 151. When the base 15 is nested and installed in the positioning cavity 213, the flow guide groove 152 is aligned with the first flow guide hole 214, thereby achieving communication between the lower end of the side flow channel 02 and the sensor pipeline 03; some of its flow lines are as shown in FIG. Fig.11 shown.

[0069] The present invention is used to be installed in a manhole cover ventilation type vacuum well 3, such as Fig.12As shown, the vacuum well 3 is installed below the road surface, the well cover 31 at the upper end is flush with the road surface, and the well cover 31 is provided with a vent hole 32 connected to the main flow channel 01; a partition 33 is provided inside the vacuum well 3, thereby dividing the inside of the vacuum well 3 into an equipment chamber 34 at the upper end and a sewage chamber 35 at the lower end. The present invention is installed in the equipment chamber 34, the sealing ring 11 at the upper end is fitted with the lower end surface of the well cover 31, and the lower end passes through the partition 33 and is connected to the sewage chamber 35. The side thereof has a sensor interface 18 and a control interface 24, and a controller is provided between the two interfaces. The function of the controller is transmitted through the sensor interface 18 The signal realizes the control of the control interface 24. The present invention is used to protect the ventilation and sewage discharge device of a vacuum well 3 equipment cavity 34. Therefore, the structure of the controller will not be described in detail. The basic principle is: when the sensor interface 18 detects that the liquid level in the sensor pipeline 03 rises to the high liquid level, the controller realizes the formation of vacuum at the control interface 24. When the sensor interface 18 detects that the liquid level has not reached the high liquid level, the controller realizes the air passing at the control interface 24. As can be seen from the working principle of the above-mentioned tube clamp valve 2, when the control interface 24 is vacuumed, the tube clamp valve 2 is closed, and when the control interface 24 is aired, the tube clamp valve 2 is opened.

[0070] Under different weather conditions, the water accumulation on the upper end of the manhole cover 31 is different. Now, the working principle of the present invention is described in detail according to different weather conditions:

[0071] (1) Sunny or cloudy days, i.e., days without water accumulation above the manhole cover 31: The air and dust circulation routes are as follows: Fig.13 As shown, at this time, there is no water in the sensor pipeline 03, so the pipe clamp valve 2 does not work and is in an open state, and the air, dust and dirt on the manhole cover 31 can pass through the pipe clamp valve 2 smoothly.

[0072] (2) Snow and hail, that is, precipitation types with solid form and poor mobility on the ground: In this case, since the inside of the vacuum well 3 has the climate characteristics of warm winter and cool summer, when the vacuum well 3 is not in operation, Fig.14 As shown, the high-humidity and high-temperature air in the sewage chamber 35 rises and flows, gradually melting the snow near the vent 32 on the ground manhole cover 31 and melting it into snow water. At this time, a small amount of snow water on the ground and air mixed with dust flow into the sewage chamber 35 along the main channel 01.

[0073] (3) Heavy rain and flood, i.e. weather with a large amount of persistent water on the ground: In the initial state, a large amount of water on the ground enters the sewage chamber 35 through the ventilation of the manhole cover 31 and the main channel 01. Due to the large amount of water and the rapid flow, the amount of water entering is much greater than the amount of water discharged when the vacuum well 3 is automatically drained, causing the liquid level in the sewage chamber 35 to rise rapidly until the liquid level reaches the top and contacts the lower surface of the partition 33; then, as Fig.15As shown, the main channel 01 will be filled with water, and the liquid level will continue to rise; when the liquid level rises to the upper end surface of the guide tube 13, that is, the overflow port 131, as shown in FIG. Fig.16 As shown, the sewage after sedimentation and purification begins to flow into the side channel 02 through the overflow port 131; since the side channel 02 is connected to the sensor pipeline 03, the liquid level in the sensor pipeline 03 will gradually rise. When it rises to a high liquid level, the controller connected thereto works to form a vacuum at the control interface 24 connected thereto, and the pipe clamp valve 2 is closed, as shown in FIG. Fig.17 As shown, at this time, the main flow channel 01 is closed, and no more water above the ground will enter the vacuum well 3, and the residual sewage in the side flow channel 02 and the sensor pipeline 03 will be discharged from the drain pipe 17 through the throttle port 161. The throttle port 161 has a certain damping delay function. For example, it takes 1 hour for all the sewage in the sensor pipeline 03 to flow out. The effect of this water capacity on the liquid level of the sewage chamber 35 is very limited. According to experiments, when the design and estimation values ​​are used, the sensor pipeline 03 needs to be discharged 100 times before the liquid level in the sewage chamber 35 reaches the high liquid level, thereby realizing a sewage discharge operation.

[0074] In this process, since the sewage chamber 35 inside the vacuum well 3 is discharged through the vacuum drain valve, the drainage efficiency and capacity of the vacuum drain valve are much greater than the amount of sewage entering the throttle port 161. Therefore, the working frequency of the vacuum drain valve is determined by the flow rate and flow entering the throttle port 161 and the volume corresponding to the high and low liquid level difference of the sewage chamber 35. The larger the volume, the smaller the flow rate of the throttle port 161, and the smaller the flow rate of the throttle port 161, the lower the frequency of the vacuum drain valve and the longer the time. This method ensures that the vacuum well 3 will not work frequently and continuously, and reduces the energy consumption of the entire vacuum well 3 system to the greatest extent.

[0075] (4) Showers, i.e. weather with a small amount of water on the ground: dust in the air, a small amount of rainwater mixed with mud and dirt are discharged into the sewage chamber 35 along the main flow channel 01 under the action of gravity.

[0076] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A vacuum well equipment cavity ventilation and sewage discharge device, characterized in that: It comprises a cylinder and a clamp valve connected to the cylinder and used to realize the on-off of the cylinder; the cylinder and the clamp valve together form a main flow channel, a side flow channel connected to the upper and lower ends of the main flow channel, and a sensor pipeline connected to the lower end of the side flow channel; a sensor interface connected to the sensor pipeline is arranged on the outer wall of the cylinder; the clamp valve is coaxially arranged with the cylinder and used to control the on-off of the main flow channel; The pipe clamp valve comprises a valve body, a hose arranged inside the valve body, a pair of clamping assemblies for realizing the opening and closing of the hose, and a control interface for realizing the operation of the pair of clamping assemblies by intermittently introducing air or vacuum; the valve body comprises a pipeline cavity arranged along the central axis direction and an installation cavity arranged perpendicular to the central axis direction of the pipeline cavity; the hose is arranged coaxially with the pipeline cavity and nested at the inner wall of the pipeline cavity, and the side wall is opposite to the installation cavity; the pair of clamping assemblies are arranged in the installation cavity; The cylinder body includes a sealing ring, a cover body, a guide tube and a cylinder body which are arranged in sequence above the pipe clamp valve, and a base, a sleeve and a drain pipe which are nested and matched in sequence below the pipe clamp valve; the guide tube is nested at the upper end of the cylinder body, and the upper end surface does not contact the lower end surface of the cover body, thereby forming an overflow port.

2. A vacuum well equipment cavity ventilation and sewage discharge device according to claim 1, characterized in that: The main flow channel is circulated along the central axis of the sealing ring, cover body, guide tube, cylinder body, hose and drain pipe in sequence, and the inner diameter remains the same; the side flow channel is distributed in a ring shape along the inner circumference of the cover body, cylinder body, valve body and base, and is connected; an overflow port is arranged in a ring shape between the lower end surface of the cover body and the upper end surface of the guide tube, which is used to connect the main flow channel with the upper end of the side flow channel; a number of throttling ports are evenly arranged on the side wall of the sleeve and the drain pipe, which are used to connect the main flow channel with the lower end of the side flow channel; the sensor pipeline is distributed in a ring shape along the inner circumference of the cylinder body and the valve body, and is connected; a number of through holes are evenly arranged on the side wall of the base and the inner wall of the valve body, which are used to connect the sensor pipeline with the lower end of the side flow channel.

3. A vacuum well equipment cavity ventilation and sewage discharge device according to claim 2, characterized in that: The sealing ring, cover body, cylinder body and valve body are nested and matched in sequence from top to bottom, and the base, sleeve and drain pipe are nested at the lower end of the valve body and are nested and coaxially arranged in sequence from inside to outside.

4. A vacuum well equipment cavity ventilation and sewage discharge device according to claim 2, characterized in that: A pair of clamping assemblies include a corrugated diaphragm, a mounting seat and a cover plate for fixing the edge of the corrugated diaphragm, a chuck fixedly connected to the middle part of the corrugated diaphragm, and a reset spring for resetting the corrugated diaphragm; the mounting seat and the cover plate are both annular structures, coaxially arranged with the mounting cavity and nested and fixed in the mounting cavity; the edge of the corrugated diaphragm is fixed between the mounting seat and the cover plate, and the middle part is fixedly connected to the chuck by a long rod screw; the chuck moves along the central axis direction of the mounting cavity, and a pair of opposite end faces of the chuck are arranged in parallel; the central axis direction of the reset spring is parallel to the movement direction of the chuck, and is arranged in contact with the inner wall of the mounting cavity; a closed cavity connected to the control interface is formed between the outer wall of the hose and the pair of corrugated diaphragms.

5. A vacuum well equipment cavity ventilation and sewage discharge device according to claim 4, characterized in that: The upper end of the hose is nested and fixed between the valve body and the lower end of the cylinder body, and the lower end is nested and fixed between the valve body and the upper end of the sleeve, and the inner diameter of the hose is the same as the inner diameter of the main channel.

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