Sanitary and safe smart building life drainage system

Abstract

The utility model particularly relates to a building life drainage system. The technical problems that the fullness degree of a discharge pipe and the thickness of deposited solid dirt in the pipe are monitored in real time, blockage is automatically dredged, the pressure of a drainage vertical pipe is monitored in real time, the positive pressure of the bottom of the vertical pipe is automatically balanced, the liquid level of a water seal of a toilet drainage system is monitored in real time, and water is automatically supplemented to the water seal in time are solved. The method is characterized in that a discharge pipe fullness and blockage monitoring and automatic flushing and dredging system is arranged and comprises a detection head for monitoring solid sediments in the discharge pipe and a high-pressure jet cleaning mechanism; and the high-pressure jet cleaning mechanism starts or stops high-pressure jet cleaning of the interior of the discharge pipe according to data monitored by the detection head. Furthermore, a pressure monitoring and automatic balancing system and a trap water seal monitoring and automatic water replenishing system are further arranged. The utility model provides an intelligent automatic system solution for monitoring the safety risk of the whole building drainage system and preventing the influence of the damage of the water seal on the sanitation and safety of the residence.

Description

Technical Field

[0001] This utility model relates to the field of building drainage system engineering technology; specifically, it relates to a sanitary and safe smart building domestic drainage system. Background Technology

[0002] Building drainage systems are piping systems within buildings used to discharge domestic sewage and wastewater. They typically include roof vent risers, drainage risers, horizontal drainage branch pipes installed on each floor to discharge domestic sewage and wastewater into the drainage risers, and discharge pipes connected to the bottom of the risers to discharge domestic sewage and wastewater out of the building. Building drainage systems discharge domestic sewage and wastewater into community drainage pipelines or municipal sewage and wastewater networks through outdoor inspection wells.

[0003] Building drainage systems are closely related to people's daily quality of life. They not only need to ensure the smooth discharge of domestic sewage and wastewater, but also prevent harmful gases from escaping from drainage fixtures and polluting indoor spaces. Therefore, a crucial component of building drainage systems is the water trap. A water trap is a device that prevents polluted gases from entering the room by creating a water seal within a fixture or pipe section. Common types include U-shaped or S-shaped water traps, integrated water traps combined with sanitary fixtures (such as toilets, urinals, and bidets with water seals), and water-sealed floor drain water traps, among others.

[0004] However, in actual use, building domestic drainage systems often experience problems such as odor backflow and poor drainage due to the following two reasons:

[0005] 1. Partial or complete blockage of the discharge pipe connected to the bottom of the drainage riser causes increased pressure within the pipe, leading to water seal splashing. Harmful gases break through the water seal and escape from the drainage fixtures, polluting the living space. This is especially true in the initial stages of newly built residential buildings, when there are few residents and low drainage flow. Furthermore, the solid waste content of wastewater from renovations and cleaning is high, making it easy for sediment to accumulate at the bottom of the discharge pipe due to insufficient flushing. Partial blockage of the discharge pipe primarily causes increased positive air pressure at the bottom of the drainage system riser due to poor ventilation, resulting in water seal splashing and foul odors in the drainage pipes of kitchens and bathrooms in ground-floor units.

[0006] 2. When residential drainage systems are left unused for extended periods, the water seal in the trap dries out due to evaporation and cannot be replenished in time, losing its protective function. This allows harmful gases from the drainage pipes to directly enter the living space, causing serious indoor environmental pollution. Tests have shown that a 50mm deep water seal typically dries out within about two weeks, causing the water seal depth to drop below the minimum standard depth, rendering the water seal ineffective. This mainly occurs in residences unoccupied for extended periods, hotel rooms unoccupied for long periods, student dormitories during winter and summer vacations, and water seals and dry floor drains in bathrooms that have not been replenished for a long time.

[0007] Referring to Figures 1(a), 1(b), and 1(c), A1 is a horizontal branch pipe for drainage; A2 is a P-trap for water replenishment; A3 is a dry area direct-connection floor drain; A4 is a washbasin; A5 is a washbasin countertop; A6 is the bathroom floor; and A7 is a shower direct-connection floor drain. The existing method to prevent the water seal of the dry area direct-connection floor drain A3 from drying out is to share the water seal of the P-trap A2 with frequently used sanitary fixtures, ensuring that the P-trap A2, which shares the water seal with the washbasin A4 drain, the shower direct-connection floor drain A7, and the dry area direct-connection floor drain A3, is constantly replenished. However, this method only works when someone is living in the bathroom and using the sanitary fixtures normally; it does not solve the problem of bathroom odor caused by the water seal drying out when the room is unoccupied for extended periods.

[0008] See also Figure 2 The existing method for solving the blockage problem of drain pipe B4 is to add an auxiliary drainage pipe B3 with a water seal at the bottom of drain riser B1. This ensures that even if drain pipe B4 is blocked, drainage can still occur through the auxiliary drainage pipe B3, preventing sewage and wastewater from overflowing from the bathroom drain pipe B2 on the floor. However, the solution using auxiliary drainage pipe B3 only temporarily solves the drainage problem. Because the water seal of the S-shaped trap B5 installed on auxiliary drainage pipe B3 prevents the release of gas from the drain riser, it cannot alleviate the problem of positive pressure rise at the bottom of the riser caused by blockage. Therefore, the problem of splashing and backflow of odors will still occur in the bathroom drain pipe B2 at the bottom of the drain riser. Utility Model Content

[0009] One of the technical problems to be solved by this utility model is to overcome the defects of the prior art and provide a hygienic and safe smart building drainage system that can monitor the fullness of the discharge pipe and the thickness of the solid waste deposited in the pipe in real time and automatically clear blockages.

[0010] The second technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a sanitary and safe smart building drainage system that can monitor the pressure of the drainage riser in real time and automatically balance the positive pressure at the bottom of the riser.

[0011] The third technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a sanitary and safe smart building drainage system that can monitor the water seal level of the toilet drainage system in real time and automatically replenish the water seal in a timely manner.

[0012] To achieve the above-mentioned technical objectives, this utility model provides the following technical solution:

[0013] A sanitary and safe smart building drainage system includes a drainage riser 1, a drainage horizontal branch pipe, an overhead vent riser 27, and a discharge pipe 14 connected to the bottom of the drainage riser. A water trap is provided on the drainage horizontal branch pipe. The system is characterized by a discharge pipe fullness and blockage monitoring and automatic flushing and unblocking system. This system includes a probe 15 for monitoring solid deposits inside the discharge pipe 14 and a high-pressure jet cleaning mechanism. The high-pressure jet cleaning mechanism activates or deactivates high-pressure jet cleaning of the discharge pipe based on data monitored by the probe 15.

[0014] Furthermore, the high-pressure jet cleaning mechanism includes a controller, a water tank 23, a high-pressure flushing water pump 19, an electric flushing valve 17, and a high-pressure water nozzle 16; the water tank, the high-pressure flushing water pump 19, the electric flushing valve 17, and the high-pressure water nozzle 16 are connected in sequence via connecting water pipes; the controller is used to receive the control signal from the probe 15, and at the same time output switch signals to the high-pressure flushing water pump 19 and the electric flushing valve 17.

[0015] Furthermore, the high-pressure jet cleaning mechanism is also equipped with a check valve 18 on the connecting water pipe.

[0016] Furthermore, the discharge pipe 14 is connected to the bottom of the drainage riser 1 via a cleanout elbow 13. The bottom of the drainage riser 1 is provided with a tubular cleanout 1301 on the cleanout elbow 13. The end of the tubular cleanout 1301 is fixed to the nozzle end of the high-pressure water nozzle 16 via a connecting flange.

[0017] Furthermore, the axes of the high-pressure water nozzle 16 and the tubular cleaning port 1301 are coaxial with the axis of the discharge pipe 14.

[0018] Preferably, the bottom of the drainage riser 1 is also equipped with a pressure monitoring and automatic balancing system. The pressure monitoring and automatic balancing system mainly includes a pressure sensor 12, an auxiliary ventilation pipeline 24 with an auxiliary ventilation port 26 connected to the bottom of the drainage riser 1, and a solenoid valve 25 with a controller. The pressure sensor 12 is used to collect the air pressure in the drainage horizontal branch pipe of the lower floor at the bottom of the drainage riser 1. The controller controls the solenoid valve 25 set on the auxiliary ventilation pipeline 24 to open or close according to the data collected by the pressure sensor 12.

[0019] Preferably, the drainage system further includes a water seal monitoring and automatic water replenishment system for the water trap, which includes a sensor installed at the water trap 4 and the water-sealed floor drain 5 to monitor the water seal level data, a water replenishment pipeline 6, and an electromagnetic water replenishment valve 7 with a controller installed on the water replenishment pipeline; the controller controls the normally closed electromagnetic water replenishment valve 7 to open and replenish water to the water trap 4 and the water-sealed floor drain 5 according to the data monitored by the sensor.

[0020] Preferably, the water seal monitoring and automatic water replenishment system for the water trap also includes a water seal connecting pipe, which is used to connect several floor drain water seal inlets and water trap inlets.

[0021] Furthermore, the water supply pipeline of the water seal monitoring and automatic water replenishment system is connected to the household water supply pipeline; the water supply pipeline replenishes the water seal in an indirect way, and the water supply inlet is set above the inlet of the water seal (4) or the inlet of the floor drain (5) with water seal, and the height is not less than 15cm.

[0022] The beneficial effects of this utility model are:

[0023] (1) The sanitary and safe smart building domestic drainage system of this utility model realizes the automatic detection of the thickness of dirt deposits and the blockage status in the bottom discharge pipe of the building drainage system. According to the set critical value of dirt deposit thickness in the discharge pipe, the high pressure flushing and unblocking device is automatically activated to prevent the pipeline system from being unable to vent, the pressure of the drainage riser from rising, the water seal of the toilet from splashing, and the harmful gas from the drainage pipe from overflowing, which would endanger human health.

[0024] (2) The drainage riser bottom pressure monitoring and automatic balancing system of the sanitary and safe smart building domestic drainage system of this utility model realizes automatic monitoring of the drainage riser bottom pressure, and automatically balances the pressure inside the pipe by connecting with the atmosphere through the auxiliary vent pipe according to the measured pressure data, so as to prevent the positive pressure from exceeding the standard range and causing water seal splashing in the bathroom of the ground floor residential building, causing harmful gases to overflow from the drainage pipe and endangering human health.

[0025] (3) The water seal monitoring and automatic water replenishment system of the sanitary and safe smart building domestic drainage system of this utility model realizes the automatic detection of the water seal in the toilet and automatically replenishes water according to the detection results, ensuring that the water seal is maintained within the standard depth range, preventing the water seal from drying out due to long-term travel or no one living there, and preventing harmful gases from overflowing from the drainage pipe and endangering human health.

[0026] (4) The sanitary and safe intelligent building domestic drainage system, composed of a water trap water seal monitoring and automatic water replenishment system, a drainage riser bottom pressure monitoring and automatic balancing system, and a discharge pipe fullness and blockage monitoring and automatic flushing and unblocking system, provides an intelligent and automated system solution for monitoring the safety risks of the entire building drainage system and preventing the impact of water seal damage on residential sanitary and safety. The three systems are both independent and complementary. When the drainage riser bottom pressure monitoring and automatic balancing system detects negative pressure in the drainage riser causing water seal suction loss, the water trap water seal monitoring and automatic water replenishment system will also automatically replenish water to ensure that the water seal is maintained within the standard depth range. When the thickness of the sewage deposit in the discharge pipe increases, it will cause the pressure in the drainage riser to increase. At the same time as the discharge pipe fullness and blockage monitoring and automatic flushing and unblocking system is automatically activated, the drainage riser bottom pressure monitoring and automatic balancing system will also automatically start the pipe pressure automatic balancing system. While cleaning and unblocking the discharge pipe, it can also prevent the positive pressure at the bottom of the riser from exceeding the standard range, which would cause water seal splashing in the bathroom of the ground floor residential building. Attached Figure Description

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0028] Figure 1(a) is a schematic diagram of Scheme 1 in the prior art, which uses the drainage of the washbasin to replenish water for the shared water seal;

[0029] Figure 1(b) is a schematic diagram of Scheme 2 in the prior art, which uses the drainage of the washbasin to replenish water for the shared water seal;

[0030] Figure 1(c) is a schematic diagram of a prior art scheme that uses shower floor drains to replenish water to a shared water seal;

[0031] Figure 2 A schematic diagram of a solution to solve the blockage of the discharge pipe by adding an auxiliary drainage pipe to the bottom of the existing drainage riser.

[0032] Explanation of reference numerals in the attached figures:

[0033] A1—Horizontal branch drain pipe; A2—Water replenishment type P-trap; A3—Straight-through floor drain in dry area; A4—Washbasin; A5—Washbasin countertop; A6—Bathroom floor; A7—Straight-through floor drain in shower area; B1—Drainage riser; B2—Floor bathroom drainage pipe; B3—Auxiliary drainage pipe; B4—Outlet pipe; B5—S-trap.

[0034] Figure 3 This is a schematic diagram of a preferred embodiment of the intelligent building drainage system for hygiene and safety according to this utility model;

[0035] Figure 4 for Figure 3 A schematic diagram of the connection structure between the elbow with cleaning port and the high-pressure water nozzle in the preferred embodiment;

[0036] Figure 5 This is a schematic diagram of another preferred embodiment of the sanitary and safe smart building domestic drainage system of this utility model;

[0037] Explanation of reference numerals in the attached figures:

[0038] 1—Drainage riser; 2—Riser horizontal branch pipe joint; 3—Drainage horizontal branch pipe; 301—Second floor drainage horizontal branch pipe;

[0039] 302—Three-layer drainage horizontal branch pipe; 4—Water trap; 5—Floor drain with water seal; 6—Stainless steel water supply line;

[0040] 601—Water seal connection pipe; 7—Electromagnetic water supply valve; 8—Manual water supply valve; 9—Residential water supply pipeline;

[0041] 10—Contact level sensor; 11—Level test probe; 12—Pressure sensor;

[0042] 13—Upper pipe with cleanout elbow at the bottom; 1301—Tube cleanout; 1302—Cleanout flange connection;

[0043] 14—Discharge pipe; 15—Ultrasonic liquid level detector; 16—High-pressure water nozzle;

[0044] 1601—Cleanup port connection flange; 1602—High-pressure water pipe connection flange; 17—Electric flushing valve;

[0045] 18—Check valve; 19—High-pressure flushing water pump; 20—Outdoor inspection well;

[0046] 21—Community drainage pipeline or municipal sewage and wastewater pipeline; 22—Manual flushing valve; 23—Water storage tank;

[0047] 24—Auxiliary ventilation line; 25—Solenoid butterfly valve; 26—Auxiliary ventilation port; 27—Extended vent riser. Detailed Implementation

[0048] This utility model relates to a smart building domestic drainage system for hygiene and safety, which is a smart drainage system that combines existing building domestic drainage systems with a hygiene and safety monitoring and control system. (See also...) Figure 3The building's domestic drainage system includes a drainage riser 1 and drainage horizontal branch pipes on each floor of the building, as shown in the diagram: drainage horizontal branch pipe 301 on the second floor, drainage horizontal branch pipe 302 on the third floor, and drainage horizontal branch pipes 3 on other floors. The drainage horizontal branch pipes are connected to the drainage riser 1 via riser horizontal branch pipe joints 2. The drainage riser 1 connects upwards to the roof vent riser 27. The bottom of the drainage riser 1 is equipped with a cleanout elbow 13 and a discharge pipe 14. The discharge pipe 14 connects to an outdoor inspection well 20. The building's domestic drainage system discharges domestic sewage and wastewater into the community drainage pipeline or municipal sewage and wastewater network 21 through the outdoor inspection well 20. The drainage horizontal branch pipes are equipped with a water trap 4 for connecting to bathroom drainage fixtures and a water-sealed floor drain 5.

[0049] The sanitary and safe smart building domestic drainage system includes a water trap water seal monitoring and automatic water replenishment system, a drainage riser bottom pressure monitoring and automatic balancing system, and a discharge pipe fullness and blockage monitoring and automatic flushing and unblocking system.

[0050] like Figure 3 The preferred embodiment shown includes a water seal monitoring and automatic water replenishment system for the sanitary and safe smart building's domestic drainage system. This system comprises a stainless steel water replenishment pipeline 6, an electromagnetic water replenishment valve 7, a manual valve 8, a resident water supply pipeline 9, a differential pressure level sensor 10, and a contact level sensor 11. Based on the water seal level data of the water trap 4 and the water-sealed floor drain 5 monitored by the differential pressure level sensor 10 and the contact level sensor 11 respectively, the system automatically opens the normally closed electromagnetic water replenishment valve 7 to replenish water to the water trap 4 and the water-sealed floor drain 5. It can also automatically close the electromagnetic water replenishment valve 7 after a preset delay time until a specified water seal depth is reached.

[0051] like Figure 3 The preferred embodiment shown includes a pressure transmitter 12 installed on the drainage horizontal branch pipes 301 and 302 on the second and third floors, an auxiliary venting line 24 connected to the bottom of the drainage riser 1, an electromagnetic butterfly valve 25, and an auxiliary venting port 26.

[0052] like Figure 3 The preferred embodiment shown includes a system for monitoring the fullness and blockage of the discharge pipe and for automatic flushing and unblocking in the sanitary and safe smart building domestic drainage system. This system includes an ultrasonic level detector 15 installed on the discharge pipe 14, a drain riser elbow with a cleaning port 13 at the bottom, a high-pressure water nozzle 16, an electric flushing valve 17, a check valve 18, a high-pressure flushing water pump 19, a manual flushing valve 22, and a water storage tank 23.

[0053] The water seal monitoring and automatic water replenishment system for the water trap (see...) Figure 3The automatic water supply system monitors the water seal level changes in the water trap 4 and the water-sealed drain 5 in real time using a contact level sensor 11 installed on the trap 4 and a differential pressure level sensor 10 installed on the drain 5. When the water seal level in either the trap 4 or the drain 5 drops below 25mm due to evaporation or negative pressure suction in the pipeline, the PLC controller automatically opens the electromagnetic water supply valve 7 based on the collected electrical signals from the contact level sensor 11 or the differential pressure level sensor 10. Water is then supplied to the trap 4 and the drain 5 via the stainless steel water supply pipeline 6. The electromagnetic water supply valve 7 will automatically close after a pre-programmed delay shutdown according to the PLC, once the water seal level in the trap 4 and the drain 5 reaches the specified depth, thus completing the entire process of automatic water supply to the water seal.

[0054] Furthermore, such as Figure 3 As shown, the contact-type liquid level sensor 11 of the water trap water seal monitoring and automatic water replenishment system is installed in the connecting pipe of the water trap 4 with a connecting pipe in the bathroom on each floor. When the liquid level drops, the contact-type liquid level sensor 11 will send a low liquid level switch electrical signal. The differential pressure liquid level sensor 10 of the water trap water seal monitoring and automatic water replenishment system is installed in the connecting pipe of the water-sealed floor drain 5 with a connecting pipe in the bathroom on each floor. When the liquid level drops, the differential pressure liquid level sensor 10 will also send a low liquid level switch electrical signal.

[0055] The automatic water replenishment pipeline of the water trap water seal monitoring and automatic water replenishment system consists of a manual water replenishment valve 8, a stainless steel water replenishment pipeline 6, and an electromagnetic water replenishment valve 7, connected to the resident's water supply pipeline 9. When the water trap water seal monitoring and automatic water replenishment system in the bathroom of a floor is operating normally, the manual water replenishment valve 8 must remain open. When the water trap water seal monitoring and automatic water replenishment system in a bathroom of a floor needs to be stopped or repaired, the manual water replenishment valve 8 should be closed. The stainless steel water replenishment pipeline 6 connected after the electromagnetic water replenishment valve 7 uses a small-diameter stainless steel pipe to the water replenishment inlet. The water replenishment inlet should be located at a height of not less than 15cm above the water trap inlet 4 and the floor drain 5 with a water seal, using an indirect water replenishment method to prevent contamination of the water supply pipe.

[0056] The water seal monitoring and automatic water replenishment system of this utility model mainly selects water traps 4 and floor drains 5 with water seals in the pipes that are prone to water seal loss for monitoring and automatic water replenishment. This simplifies the system and reduces the project cost.

[0057] The drainage riser bottom pressure monitoring and automatic balancing system consists of a pressure sensor 12, an auxiliary venting line 24, an electromagnetic butterfly valve 25, and an auxiliary vent 26. Based on pressure change data monitored by the pressure transmitters 12 on the second and third floor drainage horizontal branch pipes 301 and 302, when a preset positive pressure change range and duration are reached, the PLC controller controlling the opening of the electromagnetic butterfly valve 25 will automatically open the electromagnetic butterfly valve 25 on the auxiliary venting line 24 according to the collected signal from the pressure sensor 12. This allows the bottom drainage riser 1 to connect to the atmosphere through the auxiliary vent 24, releasing the positive pressure higher than atmospheric pressure within the drainage riser 1 and preventing splashing and backflow of odors from the water traps 4 and water-sealed floor drains 5 on the second and third floor drainage horizontal branch pipes 301 and 302. When the pressure transmitter 1, which monitors in real time, detects that the pressure in the horizontal branch pipes 301 and 302 of the second and third floors has dropped to a certain value, the PLC controller will automatically close the solenoid butterfly valve 25 according to the pre-programmed program.

[0058] The pressure sensor 12 of the pressure monitoring and automatic balancing system at the bottom of the drainage riser 1 is installed on the second and third floor drainage horizontal branch pipes 301 and 302, at a distance of no more than 400mm from the drainage riser (see...). Figure 3 This is to ensure accurate testing of the impact of pressure changes at the bottom of drainage riser 1 on the water seals of the horizontal drainage branch pipes 301 and 302 on the second and third floors. This also prevents splashing and odor backflow from the water seals in the bathrooms on the bottom floors.

[0059] Since building domestic drainage systems typically experience significant positive pressure at the bottom of the drainage risers on the second and third floors, the drainage riser bottom pressure monitoring and automatic balancing system primarily monitors and balances the pressure in the drainage horizontal branch pipes 301 and 302 on the second and third floors.

[0060] like Figure 3 As shown, the discharge pipe fullness and blockage monitoring and automatic flushing and unblocking system consists of an ultrasonic level detector 15 installed above the discharge pipe 14, a riser elbow with a cleaning port 13 at the bottom of the riser, a high-pressure water nozzle 16, an electric flushing valve 17, a check valve 18, a high-pressure flushing water pump 19, a manual flushing valve 22, and a water storage tank 23. When the ultrasonic level detector 15 installed above the discharge pipe 14 detects that the solid deposits in the discharge pipe 14 have reached a certain thickness (height), the PLC controller will automatically start the high-pressure flushing water pump 19 and open the electric flushing valve 17 according to the collected switch signal of the ultrasonic level detector 15. The high-pressure water flows through the high-pressure water nozzle 16 installed at the cleaning port of the riser elbow 13 and sprays high-pressure water into the discharge pipe 14, flushing the solid waste deposited in the discharge pipe 14 to the outdoor inspection well 20 and into the community drainage pipeline or municipal sewage and wastewater pipeline 21.

[0061] Since solid waste is most likely to accumulate in the discharge pipe 14 at a horizontal distance of 1.5m to 2m from the drainage riser 1, the ultrasonic level sensor 15 should be installed on the discharge pipe 14 at a horizontal distance of 1.5m to 2m from the drainage riser 1, and should be installed above the discharge pipe 14. The ultrasonic level sensor 15 should activate the automatic flushing and unblocking system in real time when the height of solid waste accumulation in the discharge pipe 14 reaches 20% of the pipe's inner diameter.

[0062] like Figure 4 As shown, the bottom of the riser with a cleanout elbow 13 has a tubular cleanout 1301 communicating with the elbow, and the end of the tubular cleanout 1301 has a cleanout flange interface 1302. The nozzle end of the high-pressure water nozzle 16 has a cleanout connecting flange 1601, which connects to the high-pressure water pipe connecting flange 1602 at the high-pressure cleaning water pipe connection end. The high-pressure water nozzle 16 is fixedly connected to the cleanout flange interface 1302 of the bottom of the riser with a cleanout elbow 13 through the cleanout connecting flange 1601, and the axis of the high-pressure water nozzle 16 and the tubular cleanout 1301 is coaxial with the axis of the discharge pipe 14, so that when the high-pressure cleaning water is injected into the discharge pipe 14 through the high-pressure water nozzle 16 and the tubular cleanout 1301, it can flush and remove the solid dirt deposited in the discharge pipe 14.

[0063] like Figure 3 As shown, the flushing and unblocking water source for the discharge pipe fullness and blockage monitoring and automatic flushing and unblocking system comes from the water storage tank 23. The water storage tank 23 can be replenished using the existing water source in the building or reclaimed water based on the level signal from the pressure level transmitter. The manual flushing valve 22 is a normally open valve, which is only closed when stopped or during maintenance. The check valve 18 is installed to prevent backflow of sewage and wastewater in the discharge pipe 14.

[0064] like Figure 5 In another preferred embodiment, the automatic water replenishment pipeline of the water seal monitoring and automatic water replenishment system of the sanitary and safe smart building domestic drainage system can also be composed of a pipeline consisting of a manual water replenishment valve 8, a stainless steel water replenishment pipeline 6, a water seal connecting pipe 601, and an electromagnetic water replenishment valve 7, connected to the resident's water supply pipeline 9. The water seal connecting pipe 601 is used to connect with the water seal inlet of the floor drain and the water seal inlet of the water trap during drainage pipe installation. This allows for replenishment of multiple water seals by replenishing only one floor drain or water trap. This alternative solution is suitable for new construction and renovation projects.

[0065] In summary, compared with the prior art, the sanitary and safe smart building domestic drainage system of the above-mentioned preferred embodiment does not solve the problem of preventing the backflow of odor in the toilet from a single aspect, but forms a complete sanitary and safe smart building domestic drainage system by consisting of three parts: a water seal monitoring and automatic water replenishment system for the water trap, a pressure monitoring and automatic balancing system at the bottom of the drainage riser, and a fullness and blockage monitoring and automatic flushing and unblocking system for the discharge pipe.

[0066] The embodiments described above are only used to illustrate the present utility model and are not intended to limit the present utility model. Any person skilled in the art can make various modifications, changes or substitutions without departing from the technical scope disclosed in the present utility model. Therefore, all equivalent and similar technical methods should be covered within the patent protection scope of the present utility model.

Claims

1. A sanitary and safe intelligent building domestic drainage system, comprising a drainage riser (1), a drainage horizontal branch pipe, an overhead vent riser (27), and a discharge pipe (14) connected to the bottom of the drainage riser, wherein the drainage horizontal branch pipe is provided with a water trap; characterized in that: The drainage system is equipped with a discharge pipe fullness and blockage monitoring and automatic flushing and unblocking system. The discharge pipe fullness and blockage monitoring and automatic flushing and unblocking system includes a probe (15) for monitoring solid deposits in the discharge pipe (14) and a high-pressure jet cleaning mechanism. The high-pressure jet cleaning mechanism starts or stops high-pressure jet cleaning of the inside of the discharge pipe according to the data monitored by the probe (15).

2. A sanitary and safe intelligent building domestic drainage system according to claim 1, characterized in that: The high-pressure jet cleaning mechanism includes a controller, a water tank (23), a high-pressure flushing water pump (19), an electric flushing valve (17), and a high-pressure water nozzle (16); the water tank, the high-pressure flushing water pump (19), the electric flushing valve (17), and the high-pressure water nozzle (16) are connected in sequence by connecting water pipes; the controller is used to receive the control signal from the probe (15) and output switch signals to the high-pressure flushing water pump (19) and the electric flushing valve (17).

3. A sanitary and safe intelligent building domestic drainage system according to claim 2, characterized in that: The high-pressure jet cleaning mechanism is also equipped with a check valve (18) on the connecting water pipe.

4. A sanitary and safe intelligent building domestic drainage system according to claim 1, 2, or 3, characterized in that: The discharge pipe (14) is connected to the bottom of the drainage riser (1) through a cleanout elbow (13). The bottom of the drainage riser (1) is provided with a tubular cleanout (1301) on the cleanout elbow (13). The end of the tubular cleanout (1301) is fixed to the nozzle end of the high-pressure water nozzle (16) through a connecting flange.

5. A sanitary and safe intelligent building domestic drainage system according to claim 4, characterized in that: The axes of the high-pressure water nozzle (16) and the tubular cleaning port (1301) are coaxial with the axis of the discharge pipe (14).

6. A sanitary and safe intelligent building domestic drainage system according to claim 1, 2, or 3, characterized in that: The bottom of the drainage riser (1) is also equipped with a pressure monitoring and automatic balancing system. The pressure monitoring and automatic balancing system mainly includes a pressure sensor (12), an auxiliary ventilation pipeline (24) with an auxiliary ventilation port (26) connected to the bottom of the drainage riser (1), and a solenoid valve (25) with a controller. The pressure sensor (12) is used to collect the air pressure in the drainage horizontal branch pipe of the lower floor at the bottom of the drainage riser (1). The controller controls the solenoid valve (25) set on the auxiliary ventilation pipeline (24) to open or close according to the data collected by the pressure sensor (12).

7. A sanitary and safe intelligent building domestic drainage system according to claim 1, 2, or 3, characterized in that: The drainage system also includes a water seal monitoring and automatic water replenishment system for water traps. The water seal monitoring and automatic water replenishment system includes a sensor installed at the water trap (4) and the water-sealed floor drain (5) to monitor the water seal level data, a water replenishment pipeline (6), and an electromagnetic water replenishment valve (7) with a controller installed on the water replenishment pipeline. The controller controls the normally closed electromagnetic water replenishment valve (7) to open according to the data monitored by the sensor to replenish water to the water trap (4) and the water-sealed floor drain (5).

8. A sanitary and safe intelligent building domestic drainage system according to claim 6, characterized in that: The drainage system also includes a water seal monitoring and automatic water replenishment system for water traps. The water seal monitoring and automatic water replenishment system includes a sensor installed at the water trap (4) and the water-sealed floor drain (5) to monitor the water seal level data, a water replenishment pipeline (6), and an electromagnetic water replenishment valve (7) with a controller installed on the water replenishment pipeline. The controller controls the normally closed electromagnetic water replenishment valve (7) to open according to the data monitored by the sensor to replenish water to the water trap (4) and the water-sealed floor drain (5).

9. A sanitary and safe intelligent building domestic drainage system according to claim 8, characterized in that: The water seal monitoring and automatic water replenishment system for the water trap also includes a water seal connection pipe (601), which is used to connect several floor drain water seal inlets and water trap inlets.

10. A sanitary and safe intelligent building domestic drainage system according to claim 8, characterized in that: The water supply pipeline of the water seal monitoring and automatic water replenishment system is connected to the water supply pipeline of the household; the water supply pipeline replenishes the water seal in an indirect way, and the water supply inlet is set above the inlet of the water seal (4) or the inlet of the floor drain (5) with water seal, and the height is not less than 15cm.

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