Sanitary and safe smart building life drainage system

Abstract

The invention particularly relates to a building life drainage system, and solves the technical problems that the fullness degree of a drainage 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. 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. An intelligent automatic system solution is provided for safety risk monitoring of a whole building drainage system and prevention of influence of water seal damage on residential health and safety.

Description

Technical Field

[0001] The present invention relates to the technical field of building drainage system engineering; specifically, it relates to a sanitary and safe intelligent building domestic drainage system. Background Art

[0002] The building domestic drainage system is a pipeline system used to discharge domestic sewage and wastewater from buildings within a building. It usually includes a roof vent stack, a drainage stack, drainage cross-branches provided on each floor for discharging domestic sewage and wastewater into the drainage stack, and a discharge pipe connected to the bottom of the stack to discharge domestic sewage and wastewater out of the building. The building domestic drainage system discharges domestic sewage and wastewater into the community drainage pipeline or the municipal sewage and wastewater pipe network through an outdoor inspection well.

[0003] The building domestic drainage system is closely related to people's daily life quality. It not only needs to ensure that people's daily domestic sewage and wastewater can be smoothly discharged through the drainage system, but also prevent harmful gases in the drainage pipeline system from escaping from the drainage appliances and polluting the living space. Therefore, a very important type of component in the building domestic drainage system is the water seal bend. The water seal bend is a device that prevents foul gases from entering the room by retaining a certain height of water column in the appliance or pipe section. There are usually U-shaped or S-shaped tube water seal bends, integral water seal bends combined with sanitary appliances (such as water-sealed toilets, water-sealed urinals, and bidets, etc.), and middle tube water seal bends in water-sealed floor drains, etc.

[0004] However, the building domestic drainage system often has problems of odor return and poor drainage for the following two reasons during actual use:

[0005] 1. The discharge pipe connected to the bottom of the drainage stack is partially or completely blocked, causing the pressure in the pipeline to rise, the water seal to splash, and harmful gases to break through the water seal and escape from the drainage appliances to pollute the living space. Especially in the initial stage of newly built residential buildings being put into use, due to the small number of occupied households, small drainage flow, and the relatively high content of solid waste in the sewage and wastewater discharged during decoration and cleaning, it is easy to deposit at the bottom of the discharge pipe due to lack of sufficient drainage volume for flushing. Partial blockage of the discharge pipe mainly causes the air positive pressure in the bottom of the drainage system stack to increase due to poor ventilation of the discharge pipe, resulting in splashing and odor return of the water seal in the drainage pipes of the kitchens and bathrooms of the ground-floor households.

[0006] 2. When the residential drainage appliances are not used for a long time, the water seal in the trap dries up due to evaporation and cannot be replenished in time, losing its protection function. As a result, harmful gases in the drainage pipe directly enter the living room, causing serious pollution to the living environment. Tests have shown that a trap water seal with a depth of 50 mm usually dries up due to evaporation in about two weeks, reducing the water seal depth below the minimum water seal depth specified by the standard and rendering the water seal protection ineffective. This mainly occurs in residences unoccupied during long trips, hotel rooms unoccupied for a long time, student dormitories during summer and winter vacations, and traps and dry area floor drains in the bathroom that have not received water seal replenishment for a long time.

[0007] Referring to FIGS. 1(a), 1(b), and 1(c) in combination, A1 is a horizontal drainage branch pipe; A2 is a replenishing P-trap; A3 is a direct-through floor drain in the dry area; A4 is a washbasin; A5 is a washstand; A6 is the bathroom floor; A7 is a direct-through floor drain for shower. In the prior art, the method to prevent the water seal of the direct-through floor drain A3 in the dry area of the bathroom from drying up is to share the water seal of the replenishing P-trap A2 with frequently used sanitary appliances, so that the replenishing P-trap A2 sharing the water seal with the drainage of the washbasin A4 or the direct-through floor drain A7 for shower and the direct-through floor drain A3 in the dry area can be replenished frequently. However, using the aforementioned method can only achieve the effect when people normally live and use the sanitary appliances, but cannot solve the problem of the bathroom emitting odors due to the drying up of the water seal in the trap when the living room is unoccupied for a long time.

[0008] Referring to Figure 2 , in the prior art, the method to solve the problem of blockage of the discharge pipe B4 is to add an auxiliary drainage pipe B3 with a water seal at the bottom of the drainage riser B1 to ensure that after the discharge pipe B4 is blocked, drainage can be carried out through the auxiliary drainage pipe B3 to prevent sewage and wastewater from overflowing from the floor bathroom drainage pipe B2. However, the scheme using the auxiliary drainage pipe B3 only temporarily solves the drainage problem. Since the water seal of the S-trap B5 provided on the auxiliary drainage pipe B3 will prevent the discharge of gases in the drainage riser, it cannot relieve the problem of increased positive pressure caused by blockage at the bottom of the riser, and the floor bathroom drainage pipe B2 at the bottom of the drainage riser will still have the problem of spraying and emitting odors. Summary of the Invention

[0009] One of the technical problems to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a sanitary and safe intelligent building domestic drainage system that can real-time monitor the fullness of the discharge pipe and the thickness of the deposited solid contaminants in the pipe and automatically dredge the blockage.

[0010] Another technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a sanitary and safe intelligent building domestic drainage system that can real-time monitor the pressure of the drainage riser and automatically balance the positive pressure at the bottom of the riser.

[0011] The third technical problem to be solved by the present invention is to overcome the defects of the above prior art and provide a hygienic, safe and intelligent building domestic drainage system, which can monitor the water seal liquid level of the toilet drainage system in real time and automatically replenish water to the water seal in time.

[0012] In order to achieve the above technical object, the present invention provides the following technical solutions:

[0013] A hygienic, safe and intelligent building domestic drainage system includes a drainage riser 1, a drainage horizontal branch pipe, a roof vent riser 27, and a discharge pipe 14 connected to the bottom of the vertical drainage pipe. A water seal is provided on the drainage horizontal branch pipe. The characteristic is that the drainage system is provided with a fullness and blockage monitoring and automatic flushing and dredging system for the discharge pipe. The fullness and blockage monitoring and automatic flushing and dredging system for the discharge pipe includes a detection head 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 the high-pressure jet cleaning of the inside of the discharge pipe according to the data monitored by the detection head 15.

[0014] Further, the high-pressure jet cleaning mechanism includes a controller, a water storage tank 23, a high-pressure flushing water pump 19, an electric flushing valve 17, and a high-pressure water nozzle 16. The water storage tank, the high-pressure flushing water pump 19, the electric flushing valve 17, and the high-pressure water nozzle 16 are sequentially connected through connecting water pipes. The controller is used to receive the control signal of the detection head 15 and output a switch signal to the high-pressure flushing water pump 19 and the electric flushing valve 17 at the same time.

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

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

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

[0018] Preferably, a pressure monitoring and automatic balance system is also provided at the bottom of the drainage riser 1. The pressure monitoring and automatic balance 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 on the lower floors at the bottom of the drainage riser 1. The controller controls the opening or closing of the solenoid valve 25 provided on the auxiliary ventilation pipeline 24 according to the data collected by the pressure sensor 12.

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

[0020] Preferably, the trap water seal monitoring and automatic water replenishment system further includes a water seal connecting pipe 601 for connecting the water seal inlets of several floor drains and the inlet of the trap.

[0021] Furthermore, the water replenishment pipeline of the trap water seal monitoring and automatic water replenishment system is connected to the household water supply pipeline. The water replenishment port of the water replenishment pipeline is arranged above the inlet of the trap 4 and the grating of the floor drain 5 with a water seal, and the height is not less than 15 cm, adopting an indirect water replenishment method.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) For the discharge pipe fullness, blockage monitoring and automatic flushing and dredging system of the sanitary and safe intelligent building domestic drainage system of the present invention, it realizes the automatic detection of the dirt deposition thickness and blockage condition in the bottom discharge pipe of the building drainage system, and automatically activates the high-pressure flushing and dredging device according to the set critical value of the dirt deposition thickness in the discharge pipe, preventing the exhaust of the pipeline system from being blocked, the pressure of the drainage riser from rising, the water seal in the toilet from splashing, and the harmful gases in the drainage pipe from overflowing, which endangers human health.

[0024] (2) For the bottom pressure monitoring and automatic balance system of the drainage riser of the sanitary and safe intelligent building domestic drainage system of the present invention, it realizes the automatic monitoring of the bottom pressure of the drainage riser, and automatically balances the pressure in the pipe by connecting to the atmosphere through the auxiliary vent pipe according to the measured pressure data, preventing the positive pressure from exceeding the standard range and causing the water seal in the toilet on the ground floor to splash, and the harmful gases in the drainage pipe to overflow, which endangers human health.

[0025] (3) For the trap water seal monitoring and automatic water replenishment system of the sanitary and safe intelligent building domestic drainage system of the present invention, it realizes the automatic detection of the toilet water seal, and automatically replenishes water according to the detection result, ensuring that the water seal is maintained within the standard specified depth range, preventing the water seal from drying up due to long-term travel or unoccupied residence, and the harmful gases in the drainage pipe from overflowing, which endangers human health.

[0026] (4) The sanitary and safe intelligent building domestic drainage system, which consists of the water seal monitoring and automatic water replenishment system of the trap, the bottom pressure monitoring and automatic balance system of the drainage riser, and the fullness and blockage monitoring and automatic flushing and dredging system of the discharge pipe, provides an intelligent automation system solution for the safety risk monitoring of the entire building drainage system and preventing the impact of water seal damage on the residential sanitary safety. The three systems are both independent and complementary to each other. When the bottom pressure monitoring and automatic balance system of the drainage riser measures that negative pressure appears in the drainage riser, causing water seal suction loss, the water seal monitoring and automatic water replenishment system of the trap will also start automatic water replenishment to ensure that the water seal is maintained within the depth range specified by the standard. When the thickness of the dirt deposit in the discharge pipe increases, it will cause the pressure in the drainage riser to rise. While automatically starting the fullness and blockage monitoring and automatic flushing and dredging system of the discharge pipe, the bottom pressure monitoring and automatic balance system of the drainage riser will also automatically start the in-pipe pressure automatic balance system. While cleaning and dredging the discharge pipe, it can also prevent the positive pressure at the bottom of the riser from exceeding the standard specified range and causing water seal splashing in the bathroom on the first floor of the residence. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Fig. 1(a) is a schematic diagram of Scheme 1 for replenishing water to a common water seal by using the drainage of a washbasin in the prior art;

[0029] Fig. 1(b) is a schematic diagram of Scheme 2 for replenishing water to a common water seal by using the drainage of a washbasin in the prior art;

[0030] Fig. 1(c) is a schematic diagram of a scheme for replenishing water to a common water seal by using the drainage of a shower floor drain in the prior art;

[0031] Figure 2 is a schematic diagram of a scheme for adding an auxiliary drainage pipe at the bottom of the drainage riser to solve the blockage of the discharge pipe in the prior art;

[0032] DESCRIPTION OF THE REFERENCE NUMERALS:

[0033] A1 - Drainage cross-branch pipe; A2 - Supplementary P-trap; A3 - Dry area through floor drain; A4 - Washbasin; A5 - Washbasin countertop; A6 - Bathroom floor; A7 - Shower through floor drain; B1 - Drainage riser; B2 - Floor bathroom drainage pipe; B3 - Auxiliary drainage pipe; B4 - Discharge pipe; B5 - S-trap.

[0034] Figure 3 is a schematic structural diagram of a preferred embodiment of a sanitary and safe intelligent building domestic drainage system of the present invention;

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

[0036] Figure 5 Schematic diagram of the structure of another preferred embodiment of the hygienic, safe and intelligent building domestic drainage system of the present invention;

[0037] Explanation of reference numerals:

[0038] 1—Drain vertical pipe; 2—Vertical pipe horizontal branch joint; 3—Drain horizontal branch pipe; 301—Second-floor drain horizontal branch pipe;

[0039] 302—Third-floor drain horizontal branch pipe; 4—Water seal bend; 5—Floor drain with water seal; 6—Stainless steel water replenishing pipeline;

[0040] 601—Water seal connecting pipe; 7—Electromagnetic water replenishing valve; 8—Manual water replenishing valve; 9—Resident water supply pipeline;

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

[0042] 13—Elbow with a cleaning port at the bottom of the vertical pipe; 1301—Tubular cleaning port; 1302—Cleaning port flange interface;

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

[0044] 1601—Cleaning port connecting flange; 1602—High-pressure water pipe connecting 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 vent pipeline; 25—Electromagnetic butterfly valve; 26—Auxiliary vent; 27—Stack vent vertical pipe. Detailed implementation manners

[0048] The hygienic, safe and intelligent building domestic drainage system of the present invention is an intelligent drainage system combining the existing building domestic drainage system with the hygienic and safety monitoring and control system. Referring to Figure 3, the building domestic drainage system includes a drainage riser 1, and a drainage cross-branch is provided on each floor of the building. As shown in the figure, the drainage cross-branch on the second floor is 301, the drainage cross-branch on the third floor is 302, and the drainage cross-branches on other floors are 3. The drainage cross-branches are connected to the drainage riser 1 through the riser cross-branch joint 2. The drainage riser 1 is connected upward to the roof vent riser 27, and a bend with a cleanout 13 and a discharge pipe 14 are provided at the bottom of the drainage riser 1. The discharge pipe 14 is connected to the outdoor inspection well 20; the building domestic drainage system discharges domestic sewage and domestic wastewater into the community drainage pipeline or the municipal sewage and wastewater pipe network pipeline 21 through the outdoor inspection well 20. A water seal bend 4 and a floor drain with a water seal 5 connected to the toilet drainage appliances are provided on the drainage cross-branch.

[0049] The sanitary and safe intelligent building domestic drainage system includes a water seal monitoring and automatic water replenishment system for the water seal bend, a pressure monitoring and automatic balance system at the bottom of the drainage riser, and a monitoring and automatic flushing and dredging system for the fullness and blockage of the discharge pipe.

[0050] As Figure 3 shown in the preferred embodiment, the water seal monitoring and automatic water replenishment system of the sanitary and safe intelligent building domestic drainage system includes a stainless steel water replenishment pipeline 6, an electromagnetic water replenishment valve 7, a manual valve 8, a household water supply pipeline 9, a differential pressure type liquid level sensor 10, and a contact type liquid level sensor 11. The water seal monitoring and automatic water replenishment system automatically opens the normally closed electromagnetic water replenishment valve 7 to replenish water to the water seal bend 4 and the floor drain with a water seal 5 according to the water seal liquid level data of the water seal bend 4 and the floor drain with a water seal 5 respectively monitored by the differential pressure type liquid level sensor 10 and the contact type liquid level sensor 11, and can automatically close the electromagnetic water replenishment valve 7 according to the preset delay time until the water replenishment amount reaches the specified water seal depth.

[0051] As Figure 3 shown in the preferred embodiment, the pressure monitoring and automatic balance system at the bottom of the drainage riser of the sanitary and safe intelligent building domestic drainage system includes pressure transmitters 12 provided on the drainage cross-branches 301 and 302 on the second and third floors, an auxiliary vent pipeline 24 connected to the bottom of the drainage riser 1, an electromagnetic butterfly valve 25, and an auxiliary vent 26.

[0052] As Figure 3 shown in the preferred embodiment, the monitoring and automatic flushing and dredging system for the fullness and blockage of the discharge pipe of the sanitary and safe intelligent building domestic drainage system includes an ultrasonic liquid level detection head 15 provided on the discharge pipe 14, a bend with a cleanout at the bottom of the drainage riser 13, 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 (see Figure 3) It monitors the changes in the water seal levels in the trap 4 and the water-sealed floor drain 5 in real time through the contact liquid level sensor 11 installed on the trap 4 and the differential pressure liquid level sensor 10 on the water-sealed floor drain 5. When it is detected that the water seal level depth in either the trap 4 or the water-sealed floor drain 5 drops below 25 mm due to evaporation and drying or loss caused by negative pressure suction in the pipeline, the PLC controller for controlling automatic water replenishment will automatically open the electromagnetic water replenishment valve 7 according to the electrical signals collected by the contact liquid level sensor 11 or the differential pressure liquid level sensor 10, and replenish water to the trap 4 and the water-sealed floor drain 5 through the stainless steel water replenishment pipeline 6. The electromagnetic water replenishment valve 7 will automatically close according to the delay closing program pre-compiled by the PLC when the water seal levels in the trap 4 and the water-sealed floor drain 5 reach the specified depth, completing the whole process of automatic water replenishment for the water seal.

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

[0055] The automatic water replenishment pipeline of the trap water seal monitoring and automatic water replenishment system is composed of a pipeline consisting of a manual water replenishment valve 8, a stainless steel water replenishment pipeline 6 and an electromagnetic water replenishment valve 7 connected to the household water supply pipeline 9. When the trap water seal monitoring and automatic water replenishment system in the bathroom on a certain floor is operating normally, the manual water replenishment valve 8 needs to be kept in the open state. When the trap water seal monitoring and automatic water replenishment system in the bathroom on a certain 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 port, and the water replenishment port should be set at a place not less than 15 cm above the water inlet of the trap 4 and the grid of the water-sealed floor drain 5, adopting an indirect water replenishment method to prevent pollution of the water supply source.

[0056] The water seals that need to be monitored and automatically replenished by the trap water seal monitoring and automatic water replenishment system of the present invention mainly select the trap 4 of the pipeline and the water-sealed floor drain 5 that are prone to water seal loss. This can simplify the system and reduce the project cost.

[0057] The bottom pressure monitoring and automatic balancing system of the drainage riser is composed of a pressure sensor 12, an auxiliary vent pipeline 24, an electromagnetic butterfly valve 25, and an auxiliary vent 26. The bottom pressure monitoring and automatic balancing system of the drainage riser, according to the pressure change data monitored by the pressure transmitters 12 on the second and third floor drainage cross-branches 301 and 302, when the positive pressure change range and duration preset are reached, the PLC controller that controls the opening of the electromagnetic butterfly valve 25 will, according to the signals collected by the pressure sensor 12, automatically open the electromagnetic butterfly valve 25 provided on the auxiliary vent pipeline 24, and connect the bottom drainage riser 1 to the atmosphere through the auxiliary vent 24, so that the positive pressure higher than the atmosphere in the drainage riser 1 is released, preventing the water seals of the water traps 4 and the floor drains 5 with water seals on the second and third floor drainage cross-branches 301 and 302 from splashing and emitting odors. When the pressure measured by the pressure transmitter 1 in real-time monitors that the pressure in the second and third floor drainage cross-branches 301 and 302 drops to a certain value, the PLC controller will automatically close the electromagnetic butterfly valve 25 according to the pre-programmed procedure.

[0058] The pressure sensor 12 of the bottom pressure monitoring and automatic balancing system of the drainage riser 1 is arranged on the drainage cross-branches that are no more than 400 mm away from the drainage riser on the second and third floor drainage cross-branches 301 and 302 (see Figure 3 ), to ensure that the influence of the bottom pressure change of the drainage riser 1 on the water seals of the second and third floor drainage cross-branches 301 and 302 can be accurately measured, preventing the water seals in the bottom floor bathrooms from splashing and emitting odors.

[0059] Since relatively large positive pressures usually occur at the bottom of the drainage risers on the second and third floors in the building domestic drainage system, the bottom pressure monitoring and automatic balancing system of the drainage riser mainly monitors and balances the pressures in the second and third floor drainage cross-branches 301 and 302.

[0060] As Figure 3 shown, the fullness and blockage monitoring and automatic flushing and dredging system of the discharge pipe is composed of an ultrasonic liquid level detector 15 arranged above the discharge pipe 14, an elbow with a cleanout at the bottom of the riser 13, 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 liquid level detector 15 arranged above the discharge pipe 14 detects that the solid deposits in the discharge pipe 14 reach a certain thickness (height), the PLC controller will, according to the on-off electrical signals collected by the ultrasonic liquid level detector 15, automatically start the high-pressure flushing water pump 19, and at the same time open the electric flushing valve 17. The high-pressure water flows through the high-pressure water nozzle 16 installed at the cleanout of the elbow with a cleanout at the bottom of the riser 13 and sprays high-pressure water into the discharge pipe 14, flushing the solid dirt deposited in the discharge pipe 14 to the outdoor inspection well 20 and discharging it into the community drainage pipeline or the municipal sewage and wastewater pipeline 21.

[0061] Since solid waste deposits are most likely to form at a horizontal distance of 1.5 m to 2 m from the drainage riser 1 in the discharge pipe 14, the ultrasonic liquid level detector 15 should be installed at a horizontal distance of 1.5 m to 2 m from the drainage riser 1 in the discharge pipe 14 and should be installed above the discharge pipe 14. The ultrasonic liquid level detector 15 should start the automatic flushing and dredging system in real time when the height of solid waste deposits in the discharge pipe 14 reaches 20% of the inner diameter of the pipe.

[0062] As Figure 4 shown, the riser bottom elbow 13 with a cleanout has a tubular cleanout 1301 communicating with the elbow, and the end of the tubular cleanout 1301 is provided with a cleanout flange interface 1302. The nozzle end of the high-pressure water nozzle 16 is provided with a cleanout connection flange 1601, and the high-pressure water pipe connection flange 1602 at the connection end with the high-pressure cleaning water pipe. The high-pressure water nozzle 16 is fixedly connected to the cleanout flange interface 1302 of the riser bottom elbow 13 with a cleanout through the cleanout connection flange 1601, and the axes of the high-pressure water nozzle 16 and the tubular cleanout 1301 are 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, the solid waste deposited in the discharge pipe 14 can be washed and removed.

[0063] As Figure 3 shown, the flushing and dredging water source of the discharge pipe fullness and blockage monitoring and automatic flushing and dredging system comes from the water storage tank 23, and the water storage tank 23 can be supplemented with the original water source or reclaimed water in the building according to the liquid level signal of the pressure type liquid level transmitter. The manual flushing valve 22 is a normally open valve and is only closed when stopping or performing maintenance. The check valve 18 is provided to prevent the backflow of sewage and wastewater in the discharge pipe 14.

[0064] As Figure 5 shown in another preferred embodiment, the automatic water supply pipeline of the water seal monitoring and automatic water supply system of the sanitary and safe intelligent building domestic drainage system can also be composed of a pipeline connected to the household water supply pipeline 9 by a manual water supply valve 8, a stainless steel water supply pipeline 6, a water seal connection pipe 601 and an electromagnetic water supply valve 7. The water seal connection pipe 601 is used to connect the floor drain water seal inlet and the water seal inlet of the trap during the installation of the drainage pipeline, so that only by replenishing water to any one floor drain or trap, the replenishment of multiple water seals can be realized. This alternative solution is applicable to new construction and renovation projects.

[0065] In summary, compared with the prior art, the sanitary and safe intelligent building domestic sewage drainage system of the above preferred embodiments does not solve the problem of preventing the backflow of odor in the toilet caused by the loss of water seal from a single aspect. Instead, it consists of three parts: the water seal monitoring and automatic water replenishment system of the trap, the bottom pressure monitoring and automatic balance system of the drainage riser, and the fullness and blockage monitoring and automatic flushing and dredging system of the discharge pipe, forming a complete sanitary and safe intelligent building domestic sewage drainage system.

[0066] The implementation manners of the above-described embodiments are only used to illustrate the present invention, rather than to limit the present invention. Any person skilled in the art, without departing from the technical scope disclosed by the present invention, can make various modifications, changes or substitutions. Therefore, all equivalent and similar technical methods should be covered within the scope of the patent protection of the present invention.

Claims

1. A sanitary, safe and intelligent building drainage system, comprising a drainage riser (1), a drainage lateral branch pipe, a top-extending ventilation riser (27), and a discharge pipe (14) connected to the bottom of the vertical drainage pipe, wherein a water trap is arranged on the drainage lateral branch pipe; characterized in that: The drainage system is provided 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 comprising a detection head (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 detection head (15).

2. A sanitary, safe and intelligent building drainage system according to claim 1, characterized in that: The high-pressure jet cleaning mechanism comprises a controller, a water storage tank (23), a high-pressure flushing water pump (19), an electric flushing valve (17), and a high-pressure water nozzle (16); the water storage tank, the high-pressure flushing water pump (19), the electric flushing valve (17), and the high-pressure water nozzle (16) are sequentially connected via a connecting water pipe; the controller is used to receive a control signal from a detection head (15), and simultaneously output a switch signal to the high-pressure flushing water pump (19) and the electric flushing valve (17).

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

4. A sanitary, safe and intelligent building 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) via an elbow with a cleaning port (13); the elbow with a cleaning port (13) at the bottom of the drainage riser (1) is provided with a tubular cleaning port (1301); the end of the tubular cleaning port (1301) is fixedly connected to the nozzle end of the high-pressure water nozzle (16) via a connecting flange.

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

6. A sanitary, safe and intelligent building drainage system according to claim 1, 2 or 3, characterized in that: A pressure monitoring and automatic balancing system is also provided at the bottom of the drainage riser (1), and the pressure monitoring and automatic balancing system mainly comprises 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 lateral branch pipe on the lower floor at the bottom of the drainage riser (1), and the controller controls the solenoid valve (25) provided on the auxiliary ventilation pipeline (24) to open or close according to the data collected by the pressure sensor (12).

7. A sanitary, safe and intelligent building drainage system according to claim 1, 2 or 3, characterized in that: The drainage system also includes a water trap water seal monitoring and automatic water replenishment system, which includes a sensor arranged at the water trap (4) and the water seal floor drain (5) for monitoring water seal liquid level data, a water replenishment pipeline (6), and an electromagnetic water replenishment valve (7) with a controller arranged 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 for the water trap (4) and the water seal floor drain (5).

8. A sanitary, safe and intelligent building drainage system according to claim 6, characterized in that: The drainage system also includes a water trap water seal monitoring and automatic water replenishment system, which includes a sensor arranged at the water trap (4) and the water seal floor drain (5) for monitoring water seal liquid level data, a water replenishment pipeline (6), and an electromagnetic water replenishment valve (7) with a controller arranged 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 for the water trap (4) and the water seal floor drain (5).

9. A sanitary, safe and intelligent building drainage system according to claim 8, characterized in that: The trap water seal monitoring and automatic water replenishment system also includes a water seal connecting pipe (601), and the water seal connecting pipe (601) is used to achieve communication between a plurality of floor drain water seal water inlets and the trap water inlet.

10. A sanitary, safe and intelligent building drainage system according to claim 8, characterized in that: The water supply pipeline of the water trap water seal monitoring and automatic water supply system is connected to the household water supply pipeline, and the water supply port of the water supply pipeline is arranged above the water inlet of the water trap (4) and the grate of the water seal floor drain (5), and the height is not less than 15 cm.

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