Centralized water seal device for indoor wastewater direct discharge and building drainage system
By designing a centralized water seal device with partition plates and water seal plates, combined with overflow sensors and unblocking devices, the problems of blockage, backflow, and backflow in indoor drainage systems have been solved. This has enabled automated unblocking and backflow prevention, meeting national standards for water seal depth and anti-drying requirements, and improving the reliability and hygiene of the drainage system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ARCHITECTURE DESIGN & RES GRP CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technologies, indoor drainage systems are prone to problems such as blockage, backflow, overflow, and backflow on the first floor. In particular, when floor drains without traps or buried horizontal pipes are blocked, sewage can easily flow back into the room or outdoors, making it difficult to meet the national standards for preventing backflow and backflow of odor.
Design a centralized water seal device including a partition plate and a water seal plate to divide the wastewater tank into inlet, water seal and drainage areas. Install an overflow pipe and a blockage clearing device. Combine overflow sensor and water shortage sensor to realize automatic water injection and blockage clearing. Install a second drainage horizontal pipe above the first drainage horizontal pipe to avoid backflow of water from the first floor. Install air pressure balance hole on the drainage riser to prevent blockage.
It achieves effective drainage without water traps in sanitary fixtures, prevents odor backflow, automatically clears blockages to prevent clogging, avoids backflow on the first floor, meets national standards for water seal depth and anti-drying requirements, and improves the reliability and hygiene of the drainage system.
Smart Images
Figure CN224363399U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an indoor same-floor water seal device, specifically, to a centralized water seal device for direct discharge of indoor wastewater and a building drainage system. Background Technology
[0002] Currently, with technological advancements, improved living standards, and changes in construction methods, people have increasingly higher requirements for the installation methods and separation of indoor drainage systems. In the field of building water supply and drainage, regulations stipulate that "indoor domestic drainage systems must not emit harmful substances such as turbidity or odor into the room," and that "when sanitary fixtures, floor drains without water seals, equipment, or drainage ditches without water traps are connected to domestic drainage pipes, a water trap must be installed below the drain outlet." Furthermore, regulations require that "floor drains or drainage facilities should be installed in areas with showers or washing machines, with a water seal depth of not less than 50mm. When sanitary fixtures and floor drains without water seals are connected to domestic drainage pipes, a water trap should be installed below the drain outlet, with a water seal depth of not less than 50mm." Finally, regulations require that "domestic drainage systems should have sufficient drainage capacity and should quickly and promptly remove sewage and wastewater from sanitary fixtures and floor drains." Additionally, regulations require that floor drains used for drainage on the same floor of a building should have measures to prevent drying out and backflow.
[0003] Therefore, people have been working hard to solve problems such as backflow, foul odors, and water blockages in bathrooms. As a result, anti-backflow floor drains have appeared on the market in hopes of solving the problem of backflow. However, when the drainage system is blocked, even after installing anti-backflow measures on the floor drain, sewage will still overflow from the toilet into the room. Similarly, even after installing anti-backflow devices on the toilet, sewage will still flow into the room from the sink. Obviously, installing anti-backflow devices on indoor drain outlets cannot effectively solve the problem of indoor backflow and pollution caused by blockage of the riser pipe.
[0004] Regarding the issue of foul odors, the reality is that, in order to reduce the thickness of the buried pipe bedding layer and save on project costs, it is difficult to install water traps in floor drains in engineering practice. Instead, movable floor drain water seals are used to replace the "water traps" required by the state. At the same time, mechanical floor drains with various anti-backflow flaps have emerged, or floor drains with movable water seals have replaced the permanent water traps in the pipes. When cleaning the floor drain, the water seal is pulled out, causing foul odors in the drainage system to enter the indoor space unimpeded, polluting the indoor air. Moreover, in order to ensure that the floor drain does not lose water, a connecting pipe is installed between the sink and the floor drain to replenish water to the floor drain in the less frequently used dry area. However, when the sink is not used for a long time, the floor drain will still run out of water, the water seal will fail, and the indoor air will be polluted.
[0005] In addition, the drainage system of buildings often experiences backflow problems on the first floor due to blockage of buried horizontal pipes. To solve the problem of backflow on the first floor, relevant specifications or design standards have proposed a solution for the first floor drainage to exit separately. However, when the bottom horizontal pipe is blocked, backflow problems will occur on the second floor as the water level rises. In the existing technology, there is also a drain pipe that extends to the outside on the drainage horizontal branch pipe. When the buried horizontal pipe is blocked, the sewage is discharged through the drain pipe extending to the outside. This solution not only pollutes the outdoor air and environment when blocked, but also continuously emits odors through the drain pipe extending to the outside when not blocked, which seriously violates relevant national requirements.
[0006] In order to solve the above problems, people have been seeking an ideal technological solution. Summary of the Invention
[0007] The purpose of this utility model is to address the shortcomings of the existing technology by providing a centralized water seal device for direct discharge of indoor wastewater that prevents backflow, backflow, and drying out, and to provide a building drainage system that can prevent backflow of sewage from the first floor.
[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0009] On one hand, this utility model provides a centralized water seal device for direct discharge of indoor wastewater, which includes a wastewater tank. The wastewater tank is provided with a partition plate and a water seal plate. The lower part of the partition plate is provided with a water passage hole or a water passage hole is formed between the lower end of the partition plate and the bottom of the wastewater tank. The upper part of the water seal plate is provided with an overflow hole or an overflow hole is formed between the upper end of the water seal plate and the top of the wastewater tank. The upper edge of the water passage hole is lower than the lower edge of the overflow hole. The partition plate and the water seal plate divide the wastewater tank into three areas. Among them, a water inlet area is formed between the partition plate and the inner wall of one side of the wastewater tank, a water seal area is formed between the partition plate and the water seal plate, and a drainage area is formed between the water seal plate and the inner wall of the other side of the wastewater tank.
[0010] The wastewater tank is provided with an indoor wastewater direct discharge inlet corresponding to the water inlet area, and the wastewater tank is provided with a wastewater drain outlet for connecting to the drainage riser of the building's drainage system in the drainage area; an overflow pipe is provided inside the wastewater tank, the inlet of the overflow pipe is located in the water inlet area of the wastewater tank, and the outlet of the overflow pipe is located in the drainage area of the wastewater tank or for connecting to the drainage riser or vent riser of the building's drainage system. The lowest point of the overflow pipe causing the overflow is set below the lower edge of the indoor wastewater direct discharge inlet and not below the lower edge of the overflow hole.
[0011] Based on the above, in order to prevent the overflow pipe inlet from becoming blocked and thus causing a siphon effect, the overflow pipe inlet is set higher than the upper edge of the water passage hole.
[0012] Based on the above, in order to ensure that the overflow pipe inlet is located below the water seal surface and to prevent backflow of odor from the overflow pipe inlet, thus ensuring the backflow effect of the centralized water seal device, the overflow pipe inlet is set below the lower edge of the overflow hole.
[0013] Based on the above, the wastewater tank is equipped with a blockage-clearing device for clearing blockages when the water inlet or / and the wastewater outlet are blocked.
[0014] Based on the above, the unblocking device is an unblocking water pipe installed at the outlet corresponding to the water passage hole and / or the wastewater discharge outlet, used to unblock the blockage by injecting water when the water passage hole and / or the wastewater discharge outlet is blocked, and used to inject water to replenish water when the water inlet area or the water seal area is short of water.
[0015] Based on the above, the unblocking device is a retractable scraper, a rotating broom, a rotating blade, or a rotating scalpel.
[0016] Based on the above, a clearing hole is provided at the lower part of the water seal plate, or a clearing hole is formed between the lower end of the water seal plate and the bottom of the wastewater tank. The clearing holes are respectively provided corresponding to the water passage hole and the wastewater drain outlet. A sealing device is provided in or corresponding to the clearing hole: used to open the sealing device when the water passage hole is blocked so that the clearing material generated by the clearing operation of the water passage hole can be discharged through the clearing hole and the wastewater drain outlet, or / and used to open the sealing device when the wastewater drain outlet is blocked so that the clearing material at the wastewater drain outlet can be cleared through the clearing hole.
[0017] Based on the above, in order to improve the effect of water injection for unblocking: the outlet of the unblocking water pipe is equipped with a variable diameter water sprayer, which is used to unblock the blockage by pressurizing water spray when the water passage hole or / and the wastewater drain outlet are blocked.
[0018] Based on the above, in order to achieve automated water injection for clearing blockages or replenishing water: the centralized water seal device also includes a controllable valve installed on the clearing water pipe, and an overflow sensor and a water shortage sensor are installed in the wastewater tank. The overflow sensor is set below the lower edge of the indoor wastewater direct discharge inlet and / or not higher than the lowest point of the overflow pipe that causes overflow. The water shortage sensor is set not higher than the lower edge of the overflow hole. The overflow sensor is connected to the controllable valve and is used to control the controllable valve to open and inject water to clear blockages when the water passage hole and / or the wastewater drain outlet are blocked, based on the overflow signal collected by the overflow sensor. The water shortage sensor is connected to the controllable valve and is used to control the controllable valve to open and inject water to replenish water when there is a water shortage in the water inlet area or the water seal area, based on the water shortage signal collected by the water shortage sensor.
[0019] Based on the above, in order to achieve automated opening and closing of the unblocking hole: the sealing device includes a pluggable sealing plug disposed in the unblocking hole or a pluggable sealing plate disposed corresponding to the unblocking hole, and a controllable drive mechanism for driving the pluggable sealing plug to be inserted and removed left and right or driving the pluggable sealing plate to be inserted and removed up and down, wherein the overflow sensor is connected to the controllable drive mechanism and is used to control the controllable drive mechanism to open the pluggable sealing plug or the pluggable sealing plate according to the overflow signal collected by the overflow sensor when the water passage hole and / or the wastewater drain outlet is blocked.
[0020] Based on the above, in order to facilitate the construction of drainage risers and / or venting risers in the building's drainage system: drainage riser sections and / or venting riser sections are provided in the drainage area through the wastewater tank for connection with the risers on each floor to construct the drainage risers and / or venting risers in the building's drainage system; the wastewater outlet is connected to the drainage riser section, and the outlet of the overflow pipe is located in the drainage area of the wastewater tank or connected to the drainage riser section or the venting riser section.
[0021] Based on the above, in order to balance the air pressure inside the wastewater tank and prevent overflow caused by blockage of the wastewater drain outlet or the short section of the drain riser: an air pressure balance hole is provided on the short section of the vent riser located inside the wastewater tank. The lower edge of the air pressure balance hole is lower than the lower edge of the indoor wastewater direct discharge inlet and higher than the lower edge of the wastewater drain outlet, for balancing the air pressure inside the wastewater tank and for draining water when the wastewater drain outlet or the short section of the drain riser is blocked. On the other hand, this utility model provides a building drainage system, which includes a drain riser and a centralized water seal device for direct discharge of indoor wastewater, which is provided on each floor slab or embedded in each floor slab, wherein the wastewater drain outlet of the wastewater tank on each floor is connected to the drain riser.
[0022] Based on the above, in order to prevent sewage from overflowing into the first-floor bathroom through the drainage riser after the first drainage horizontal pipe is blocked: the bottom end of the drainage riser is provided with a first drainage horizontal pipe and a second drainage horizontal pipe for connecting to the outdoor sewage inspection well, and the second drainage horizontal pipe is set higher than the first drainage horizontal pipe.
[0023] Based on the above, in order to facilitate the acquisition of information on blockage in the first horizontal drainage pipe, the building's drainage system also includes an alarm and a blockage sensor installed at the bottom of the drainage riser. The blockage sensor is connected to the alarm and is used to control the alarm to sound an alarm based on the blockage signal collected by the blockage sensor when the first horizontal drainage pipe is blocked.
[0024] Based on the above, in order to accurately obtain the blockage information of the first drainage horizontal pipe: the blockage sensor is set inside the second drainage horizontal pipe, or the blockage sensor is set in the drainage riser at a position no higher than the lower edge of the inlet of the second drainage horizontal pipe.
[0025] This utility model has substantial features and progress compared to the prior art, specifically:
[0026] 1. A wastewater tank is divided into three areas by partitions and a water seal plate, forming a box-type centralized water seal device. This allows for the direct discharge of wastewater from sanitary fixtures without water traps (such as sinks, washing machines, mop sinks, etc.), floor drains without water seals, and leaks from tile grout or pipes within the subfloor. (Sanitary fixtures do not require dedicated water traps, and floor drains do not require dedicated water seals). It also achieves a centralized or unified water seal, preventing backflow of odors from the building's drainage system through sanitary fixtures, floor drains, and leaking outlets. Simultaneously, an overflow pipe within the wastewater tank allows for self-drainage through overflow or siphon effect when the tank is blocked or drainage is insufficient, preventing wastewater from overflowing into the room. The box-type structure and water seal structure of this device easily achieve a water seal depth of at least 50mm, facilitate large-area water seals, and enable high-volume, evaporation-resistant water seals, improving the backflow prevention effect of the centralized water seal and preventing drying out.
[0027] 2. A blockage-clearing device is installed in the wastewater tank to promptly clear blockages such as mud and sand deposited at the water inlet and / or wastewater outlet, preventing backflow. In addition, water can be replenished through the blockage-clearing pipe to prevent the inlet or water seal area from drying out and emitting odors.
[0028] 3. The overflow sensor and the water shortage sensor are respectively connected to the controllable valve. When the water passage hole and / or wastewater drain outlet are blocked, the controllable valve can be opened according to the overflow signal collected by the overflow sensor to realize water injection and clearing blockage. When the water inlet area or water seal area is short of water, the controllable valve can be opened according to the water shortage signal collected by the water shortage sensor to realize water injection and replenishment, so as to realize automated water injection for clearing blockage or replenishing water.
[0029] 4. The overflow sensor is connected to the controllable drive mechanism, which can control the controllable drive mechanism to open the pluggable or insertable plate-type sealing plug according to the overflow signal collected by the overflow sensor when the water passage hole and / or wastewater drain outlet is blocked, so as to clear the blockage. This realizes the automatic opening and closing of the clearing hole, so as to achieve automatic clearing and cleaning by injecting water.
[0030] 5. The bottom of the drainage system is equipped with a second drainage horizontal pipe that is higher than the first drainage horizontal pipe. After the first drainage horizontal pipe is blocked, the water can be drained in time through the second drainage horizontal pipe to prevent sewage from overflowing into the bathroom on the first floor along the drainage riser. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the centralized water seal device in Embodiment 1 of this utility model.
[0032] Figure 2 This is a schematic diagram of the centralized water seal device in Embodiment 2 of this utility model.
[0033] Figure 3 This is a schematic diagram of the centralized water seal device in Embodiment 3 of this utility model.
[0034] Figure 4 This is one of the structural schematic diagrams of the centralized water seal device in Embodiment 4 of this utility model.
[0035] Figure 5 This is one of the structural schematic diagrams of the centralized water seal device in Embodiment 8 of this utility model.
[0036] Figure 6 This is one of the structural schematic diagrams of the centralized water seal device in Embodiment 10 of this utility model.
[0037] Figure 7 This is one of the structural schematic diagrams of the building drainage system in Embodiment 12 of this utility model. Detailed Implementation
[0038] The technical solution of this utility model will be further described in detail below through specific embodiments.
[0039] Example 1
[0040] like Figure 1 As shown, a centralized water seal device for direct discharge of indoor wastewater includes a wastewater tank 1. The wastewater tank 1 is equipped with a partition plate 2 and a water seal plate 3. The partition plate 2 has a water passage hole at its lower part, or a water passage hole is formed between the lower end of the partition plate 2 and the bottom of the wastewater tank 1. The water seal plate 3 has an overflow hole at its upper part, or an overflow hole is formed between the upper end of the water seal plate 3 and the top of the wastewater tank 1. The upper edge of the water passage hole is lower than the lower edge of the overflow hole. The partition plate 2 and the water seal plate 3 divide the wastewater tank 1 into three areas: a water inlet area is formed between the partition plate 2 and one inner wall of the wastewater tank 1; a water seal area is formed between the partition plate 2 and the water seal plate 3; and a drainage area is formed between the water seal plate 3 and the other inner wall of the wastewater tank 1.
[0041] In this embodiment, a wastewater tank 1 is divided into three areas by a partition plate 2 and a water seal plate 3, forming a box-type centralized water seal device. This allows for the direct discharge of wastewater from sanitary fixtures without water traps (such as sinks, washing machines, mop sinks, etc.), floor drains without water seals, and seepage from tile gaps or leaks in pipes within the subfloor. (Sanitary fixtures do not require dedicated water traps, and floor drains do not require dedicated water seals). It also achieves centralized or unified water sealing, preventing backflow of odors from the building's drainage system through sanitary fixtures, floor drains, and seepage or leakage outlets. The box-type and water seal structures of this water seal device facilitate achieving a water seal depth of at least 50mm, large-area water sealing, and high-volume, evaporation-resistant water seals, improving the backflow odor effect of the centralized water seal and preventing drying out.
[0042] In this embodiment, the wastewater tank 1 is provided with an indoor wastewater direct discharge inlet 7 corresponding to the water inlet area. The indoor wastewater direct discharge inlet 7 can be the installation port of a waterless floor drain, or an inlet or inlet pipe directly connected to a sanitary ware without a water trap, or a drain hole for collecting seepage water from the gaps in the floor tiles or leakage water from the pipes in the subfloor. The wastewater tank 1 is provided with a wastewater drain outlet in the drainage area for connecting to the drainage riser of the building's drainage system.
[0043] In this embodiment, an overflow pipe 4 is installed inside the wastewater tank 1. The inlet of the overflow pipe 4 is located in the water inlet area of the wastewater tank 1, and the outlet of the overflow pipe 4 is used to connect to the drainage riser or vent riser of the building's drainage system. By installing the overflow pipe 4 inside the wastewater tank 1, drainage can be achieved automatically by triggering overflow or siphon effect when the wastewater tank is blocked or drainage is insufficient, thus preventing wastewater from overflowing back into the room. The lowest point where the overflow pipe 4 triggers overflow is set below the lower edge of the indoor wastewater direct discharge inlet 7 and not below the lower edge of the overflow hole. By setting the position of the overflow pipe 4, the timing of overflow triggering can be precisely controlled, preventing wastewater from overflowing back into the room from the indoor wastewater direct discharge inlet 7 due to blockage and preventing premature triggering of overflow from causing a drop in the water level in the water inlet area, which could lead to water seal failure or reduced water seal effect.
[0044] In this embodiment, for integrated design, space saving, and convenient construction and installation, a drainage riser section 91 and a venting riser section 101 are provided on the wastewater tank 1, penetrating the wastewater tank 1. When constructing the building's drainage system, the drainage riser sections 91 and venting riser sections 101 of each floor are connected in series vertically via risers on each floor, thus easily constructing the drainage riser and / or venting riser of the building's drainage system. Specifically, the wastewater outlet is connected to the drainage riser section 91; a drain outlet is formed at the lower part of the section of the drainage riser section 91 located within the wastewater tank 1, and this drain outlet constitutes the wastewater outlet 15. The outlet 14 of the overflow pipe 4 is connected to the drainage riser section 91 or the vent riser section 101. Specifically, an overflow outlet is opened on the drainage riser section 91 or the vent riser section 101 located in the wastewater tank 1, and the outlet 14 of the overflow pipe 4 is connected to the overflow outlet.
[0045] In this embodiment, in order to balance the air pressure inside the wastewater tank 1 and prevent overflow caused by blockage of the wastewater drain outlet 15 or the drain riser section 91: an air pressure balance hole 21 is provided on the vent riser section 101 located inside the wastewater tank 1. The lower edge of the air pressure balance hole 21 is lower than the lower edge of the indoor wastewater direct discharge inlet 7 and higher than the lower edge of the wastewater drain outlet 15. It is used to balance the air pressure inside the wastewater tank 1 and to drain water when the wastewater drain outlet 15 or the drain riser section 91 is blocked.
[0046] In this embodiment, a toilet drain outlet 16 is provided on the drainage riser of the drainage system. Specifically, the toilet drain outlet 16 is located on the short section 91 of the drainage riser outside the wastewater tank 1, so as to facilitate direct connection to the indoor toilet or urinal. It should be noted that in other embodiments, the toilet drain outlet 16 may also be located inside the wastewater tank 1, and it is connected to the indoor toilet or urinal through a drain pipe on the same floor.
[0047] It should be noted that, depending on installation or construction requirements, in other embodiments, only a short drain riser or a short vent riser is installed through the drainage area of the wastewater tank. When only a short vent riser is installed through the drainage area of the wastewater tank, the wastewater drain outlet is connected to the drain riser of the building's drainage system located outside the wastewater tank.
[0048] Example 2
[0049] like Figure 2As shown, this embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. The main difference between this device and Embodiment 1 is that: instead of installing a short drain riser section or / and a short vent riser section that penetrates the wastewater tank, the drain riser 9 or / and the vent riser 10 of the building drainage system are installed outside the wastewater tank 1 of the centralized water seal device during installation. The wastewater drain outlet 15 is located on the side wall of the wastewater tank 1 and is connected to the wastewater drain outlet 11 on the drain riser 9 through a same-floor drainage connection pipe 12.
[0050] It should be noted that, depending on installation or construction requirements, in other embodiments, the wastewater outlet may also be located at the bottom of the wastewater tank.
[0051] Example 3
[0052] like Figure 3 As shown, this embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. The main difference between this device and Embodiment 1 is that the short drain riser section and / or vent riser section that penetrates the wastewater tank are no longer provided on the wastewater tank. Instead, during installation, the drain riser 9 and / or vent riser 10 of the building drainage system are directly installed through the wastewater tank 1 of the centralized water seal device. The drain riser 9 is provided with a same-floor drain outlet, which constitutes the wastewater drain outlet 15 of the wastewater tank 1.
[0053] Example 4
[0054] This embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. Its main difference from embodiments 1-3 is that the outlet of the overflow pipe is located in the drainage area of the wastewater tank. When the water inlet is blocked, wastewater from the inlet area can be diverted to the drainage area through the overflow pipe and discharged promptly from the wastewater outlet. In practical applications, the probability of the water inlet being blocked is relatively high, while the probability of the wastewater outlet being blocked is relatively low. This structural design reduces the processing and installation difficulty of the overflow pipe, saving costs.
[0055] Taking one example from this embodiment, the main difference from embodiment 1 is as follows: Figure 4 As shown, the outlet 14 of the overflow pipe 4 is located in the drainage area of the wastewater tank 1, and is used to guide the wastewater in the inlet area to the drainage area through the overflow pipe 4.
[0056] Example 5
[0057] This embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. The main difference between this device and embodiments 1-4 is that the inlet of the overflow pipe is set higher than the upper edge of the water passage hole. This can prevent silt, hair, fibers and other blockages from blocking the inlet of the overflow pipe after the water passage hole is blocked, so that the siphon effect that should be triggered cannot be generated.
[0058] Example 6
[0059] This embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. The main difference between this device and embodiments 1-5 is that the inlet of the overflow pipe is set below the lower edge of the overflow hole, which allows the inlet of the overflow pipe to be located below the water seal surface, thus preventing backflow of odor from the inlet of the overflow pipe and ensuring the backflow effect of the centralized water seal device.
[0060] Example 7
[0061] This embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. The main difference between this device and embodiments 1-6 is that the wastewater tank is equipped with a blockage clearing device, which is used to clear blockages when the water passage or / and the wastewater drain outlet are blocked.
[0062] In this embodiment, the unblocking device is an unblocking water pipe. The outlet of one unblocking water pipe is set to correspond to the water passage or the wastewater drain outlet, or the two outlets of one unblocking water pipe are set to correspond to the water passage and the wastewater drain outlet respectively, or the outlets of two unblocking water pipes are set to correspond to the water passage and the wastewater drain outlet respectively. It is used to unblock the blockage by injecting water when the water passage and / or the wastewater drain outlet is blocked, and to inject water to replenish water when the water inlet area or the water seal area is short of water.
[0063] In this embodiment, a cleaning water pipe is installed in the wastewater tank. The cleaning water pipe can be used to flush and clear blockages such as mud and sand deposited at the water inlet and / or wastewater outlet in a timely manner, preventing backflow of blockages. In addition, water can be replenished through the cleaning water pipe to prevent the water inlet area or water seal area from drying out and smelling bad.
[0064] It should be noted that in other embodiments, the unblocking device may also be a retractable scraper, a rotating broom, a rotating blade, or a rotating blade. Specifically, a retractable scraper, a rotating broom, a rotating blade, or a rotating blade may be installed corresponding to the water inlet or the wastewater outlet, or a retractable scraper, a rotating broom, a rotating blade, or a rotating blade may be installed corresponding to the water inlet and the wastewater outlet, respectively.
[0065] Example 8
[0066] This embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. The main difference between this device and embodiments 1-6 is that the wastewater tank is equipped with a blockage clearing device, which is used to clear blockages when the water passage or / and the wastewater drain outlet are blocked.
[0067] The unblocking device is an unblocking water pipe, with one outlet of the unblocking water pipe corresponding to the water passage hole. It is used to unblock the blockage by injecting water when the water passage hole or / and the wastewater drain outlet are blocked, and to replenish water when the water inlet area or the water seal area is short of water.
[0068] The lower part of the water seal plate is provided with a clearing hole, or a clearing hole is formed between the lower end of the water seal plate and the bottom of the wastewater tank. The clearing holes are respectively provided corresponding to the water passage hole and the wastewater drain outlet. A sealing device is provided in or corresponding to the clearing hole: used to open the sealing device when the water passage hole is blocked so that the clearing material generated during the clearing operation of the water passage hole can be discharged through the clearing hole and the wastewater drain outlet, or / and used to open the sealing device when the wastewater drain outlet is blocked so that the clearing material at the wastewater drain outlet can be cleared through the clearing hole.
[0069] Taking one example from this embodiment, the main difference from embodiment 1 is as follows: Figure 5 As shown, one outlet of the unblocking water pipe 8 is provided corresponding to the water passage hole. The lower part of the water seal plate 3 is provided with an unblocking hole 13, or an unblocking hole 13 is formed between the lower end of the water seal plate 3 and the bottom of the wastewater tank 1. The unblocking holes 13 are respectively provided corresponding to the water passage hole and the wastewater drain outlet to facilitate the discharge of unblocking materials and to facilitate unblocking operations. A sealing device is provided in or corresponding to the unblocking hole 13 for: opening the sealing device when the water passage hole is blocked, allowing water to flow from the unblocking water pipe... The outflowing cleaning water clears the blockage at the water inlet, and the resulting blockage and wastewater are discharged sequentially through the clearing hole and the wastewater outlet; or / and is used to: open the sealing device when the wastewater outlet is blocked, so that the cleaning water flowing from the clearing water pipe flows sequentially through the water inlet and the clearing hole to the wastewater outlet, and clears the blockage at the wastewater outlet, and the resulting blockage and wastewater are discharged through the wastewater outlet.
[0070] In this embodiment, a cleaning water pipe is installed in the wastewater tank. The cleaning water pipe and cleaning hole can be used to flush and clear the blockages such as mud and sand deposited at the water inlet and / or the wastewater outlet in a timely manner, so as to avoid backflow of blockages. In addition, water can be replenished through the cleaning water pipe to prevent the water inlet area or water seal area from drying out and smelling bad.
[0071] It should be noted that in other embodiments, the unblocking device may also be a retractable scraper. During unblocking, the retractable scraper can pass through the water passage hole and the unblocking hole to reach the wastewater outlet. That is, when the water passage hole and / or the wastewater outlet is blocked, the back-and-forth scraping of the scraper can be used to unblock the blockage at the water passage hole and / or the wastewater outlet.
[0072] Example 9
[0073] This embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. The main difference between this device and embodiments 7-8 is that the outlet of the unblocking water pipe is equipped with a variable diameter water sprayer, which is used to clear the blockage by pressurizing water spray when the water passage hole or / and the wastewater drain outlet are blocked, thereby improving the effect of water injection and unblocking.
[0074] Example 10
[0075] This embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. Its main difference from embodiments 7-9 is that the centralized water seal device further includes a controllable valve installed on the unblocking water pipe. An overflow sensor and a water shortage sensor are installed inside the wastewater tank. The overflow sensor is positioned below the lower edge of the direct discharge inlet of the indoor wastewater and / or not higher than the lowest point where the overflow pipe causes overflow. The water shortage sensor is not higher than the lower edge of the overflow hole. The overflow sensor is connected to the controllable valve and is used to control the controllable valve to open and inject water to unblock the blockage when the water inlet and / or the wastewater outlet are blocked, based on the overflow signal collected by the overflow sensor. The water shortage sensor is connected to the controllable valve and is used to control the controllable valve to open and inject water to replenish water when there is a water shortage in the water inlet area or the water seal area, based on the water shortage signal collected by the water shortage sensor.
[0076] Taking one example from this embodiment, the main difference from embodiment 8 is as follows: Figure 6 As shown, the centralized water seal device also includes a controllable valve installed on the unblocking water pipe 8. An overflow sensor 6 and a water shortage sensor 5 are installed in the wastewater tank 1. The overflow sensor 6 is set below the lower edge of the indoor wastewater direct discharge inlet 7 and / or not higher than the lowest point of the overflow pipe 4 that causes the overflow. The water shortage sensor 5 is set below the lower edge of the overflow hole. The overflow sensor 6 is connected to the controllable valve and is used to control the controllable valve to open and inject water to unblock the blockage when the water passage hole and / or the wastewater drain outlet are blocked, based on the overflow signal collected by the overflow sensor 6. The water shortage sensor 5 is connected to the controllable valve and is used to control the controllable valve to open and inject water to replenish water when the water inlet area or the water seal area is short of water, based on the water shortage signal collected by the water shortage sensor 5.
[0077] In this embodiment, automated water injection is achieved by setting up a controllable valve, an overflow sensor, and a water shortage sensor, which facilitates water injection for unblocking or replenishing water.
[0078] In this embodiment, the overflow sensor is positioned below the lower edge of the indoor wastewater direct discharge inlet and / or no higher than the lowest point where the overflow pipe triggers the overflow. By positioning the overflow sensor 6, an overflow signal can be obtained before wastewater returns to the room from the indoor wastewater direct discharge inlet 7, and at least when the overflow pipe 4 begins to trigger an overflow or siphon effect. This allows for the acquisition of a precise overflow signal, enabling more accurate and effective control of the controllable valve.
[0079] Example 11
[0080] This embodiment discloses a centralized water seal device for direct discharge of indoor wastewater. The main difference between this device and Embodiment 10 is that the sealing device includes a pluggable sealing plug disposed in the sealing hole 13 or a pluggable sealing plate disposed corresponding to the unblocking hole 13, and a controllable drive mechanism for driving the pluggable sealing plug to be inserted and removed left and right or for driving the pluggable sealing plate to be inserted and removed up and down. The overflow sensor 6 is connected to the controllable drive mechanism and is used to control the controllable drive mechanism to open the pluggable sealing plug or the pluggable sealing plate according to the overflow signal collected by the overflow sensor 6 when the water passage hole and / or the wastewater drain outlet is blocked.
[0081] In this embodiment, an overflow sensor is connected to a controllable drive mechanism, which drives a pluggable sealing plug or a pluggable sealing plate to achieve automatic opening and closing of the unblocking hole, facilitating automatic unblocking and cleaning.
[0082] In this embodiment, the overflow sensor is positioned below the lower edge of the indoor wastewater direct discharge inlet and / or no higher than the lowest point where the overflow pipe triggers the overflow. By positioning the overflow sensor 6, an overflow signal can be obtained before wastewater returns to the room from the indoor wastewater direct discharge inlet 7, and at least when the overflow pipe 4 begins to trigger an overflow or siphon effect. This allows for the acquisition of a precise overflow signal, enabling more accurate and effective control of the controllable drive mechanism.
[0083] It should be noted that, in other embodiments, the sealing device is a pluggable sealing plug installed in the sealing hole or a pluggable sealing plate installed corresponding to the unblocking hole. The wastewater tank is provided with an inspection port, through which the sealing device can be manually opened or closed.
[0084] Example 12
[0085] A building drainage system includes a drainage riser and a centralized water seal device for direct discharge of indoor wastewater, as described in Embodiments 1-11 above, which is installed on or embedded in each floor slab. The wastewater outlet of the wastewater tank on each floor is connected to the drainage riser.
[0086] Based on Embodiment 1, this embodiment will be described using one example: Figure 7 As shown, the bottom end of the drainage riser 9 is provided with a first drainage horizontal pipe 18 and a second drainage horizontal pipe 17 for connecting to the outdoor sewage inspection well 19. The second drainage horizontal pipe 17 is set higher than the first drainage horizontal pipe 18. Because the second drainage horizontal pipe 17 is set higher than the first drainage horizontal pipe 18, if the first drainage horizontal pipe 18 is blocked, the sewage can be drained in time through the second drainage horizontal pipe 17, preventing sewage from overflowing up the drainage riser 9 into the first-floor bathroom.
[0087] In this embodiment, in order to facilitate the acquisition of blockage information of the first drainage horizontal pipe, the building drainage system also includes an alarm and a blockage sensor 20 installed at the bottom of the drainage riser 9. The blockage sensor 20 is connected to the alarm and is used to control the alarm to sound an alarm based on the blockage signal collected by the blockage sensor 20 when the first drainage horizontal pipe 18 is blocked.
[0088] In this embodiment, in order to accurately obtain the blockage information of the first drainage horizontal pipe, the blockage sensor 20 is disposed inside the second drainage horizontal pipe 17, or the blockage sensor 20 is disposed in the drainage riser 9 at a position not higher than the lower edge of the inlet of the second drainage horizontal pipe 17.
[0089] In this embodiment, a community sewage trunk line 22 is installed on the outdoor sewage inspection well 19.
[0090] It should be specifically noted that, in this patent, the centralized water seal device may include a controller connected to the overflow sensor, the water shortage sensor, the controllable valve, and the controllable drive mechanism, respectively. The overflow sensor controls the controllable valve or the controllable drive mechanism through the controller, and the water shortage sensor controls the controllable valve through the controller. Additionally, the centralized water seal device may include an indoor alarm connected to the controller to trigger an alarm based on the overflow signal collected by the overflow sensor or the water shortage signal collected by the water shortage sensor, thereby reminding residents to inspect, clear blockages, or add water.
[0091] It should be noted that in this patent, the decision to install an exhaust riser or exhaust riser section depends on the building's use, installation, or construction needs, and it is not essential.
[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A centralized water seal device for direct discharge of indoor wastewater, comprising a wastewater tank, characterized in that: The wastewater tank is equipped with a partition plate and a water seal plate. The lower part of the partition plate is provided with a water passage hole, or a water passage hole is formed between the lower end of the partition plate and the bottom of the wastewater tank. The upper part of the water seal plate is provided with an overflow hole, or an overflow hole is formed between the upper end of the water seal plate and the top of the wastewater tank. The upper edge of the water passage hole is lower than the lower edge of the overflow hole. The partition plate and the water seal plate divide the wastewater tank into three areas. A water inlet area is formed between the partition plate and the inner wall of one side of the wastewater tank. A water seal area is formed between the partition plate and the water seal plate. A drainage area is formed between the water seal plate and the inner wall of the other side of the wastewater tank. The wastewater tank is provided with an indoor wastewater direct discharge inlet corresponding to the water inlet area, and the wastewater tank is provided with a wastewater discharge outlet for connecting to the drainage riser of the building's drainage system in the drainage area. An overflow pipe is installed inside the wastewater tank. The inlet of the overflow pipe is located in the water inlet area of the wastewater tank, and the outlet of the overflow pipe is located in the drainage area of the wastewater tank or as a drainage riser or vent riser for connecting to the building's drainage system. The lowest point of the overflow pipe that causes the overflow is set below the lower edge of the indoor wastewater direct discharge inlet and not below the lower edge of the overflow hole.
2. The centralized water seal device for direct discharge of indoor wastewater according to claim 1, characterized in that: The inlet of the overflow pipe is positioned above the upper edge of the water passage hole.
3. The centralized water seal device for direct discharge of indoor wastewater according to claim 1, characterized in that: The inlet of the overflow pipe is positioned below the lower edge of the overflow hole.
4. The centralized water seal device for direct discharge of indoor wastewater according to claim 1, 2, or 3, characterized in that: The wastewater tank is equipped with a blockage-clearing device for clearing blockages when the water inlet or / and the wastewater outlet are blocked.
5. The centralized water seal device for direct discharge of indoor wastewater according to claim 4, characterized in that: The unblocking device is an unblocking water pipe installed at the outlet corresponding to the water passage hole and / or the wastewater discharge outlet. It is used to clear the blockage by injecting water when the water passage hole and / or the wastewater discharge outlet is blocked, and to inject water to replenish water when the water inlet area or the water seal area is short of water.
6. The centralized water seal device for direct discharge of indoor wastewater according to claim 4, characterized in that: The unblocking device is a retractable scraper, a rotating broom, a rotating blade, or a rotating blade.
7. The centralized water seal device for direct discharge of indoor wastewater according to claim 5 or 6, characterized in that: The lower part of the water seal plate is provided with a clearing hole, or a clearing hole is formed between the lower end of the water seal plate and the bottom of the wastewater tank. The clearing holes are respectively provided corresponding to the water passage hole and the wastewater drain outlet. A sealing device is provided in or corresponding to the clearing hole: used to open the sealing device when the water passage hole is blocked so that the clearing material generated during the clearing operation of the water passage hole can be discharged through the clearing hole and the wastewater drain outlet, or / and used to open the sealing device when the wastewater drain outlet is blocked so that the clearing material at the wastewater drain outlet can be cleared through the clearing hole.
8. The centralized water seal device for direct discharge of indoor wastewater according to claim 5, characterized in that: The outlet of the unblocking water pipe is equipped with a variable diameter water sprayer, which is used to clear the blockage by pressurizing water spray when the water passage or / and the wastewater drain outlet are blocked.
9. The centralized water seal device for direct discharge of indoor wastewater according to claim 5 or 8, characterized in that: The centralized water seal device also includes a controllable valve installed on the unblocking water pipe. An overflow sensor and a water shortage sensor are installed inside the wastewater tank. The overflow sensor is positioned below the lower edge of the indoor wastewater direct discharge inlet and / or not higher than the lowest point where overflow occurs from the overflow pipe. The water shortage sensor is positioned not higher than the lower edge of the overflow hole. The overflow sensor is connected to the controllable valve and is used to control the valve to open and inject water to unblock the blockage based on the overflow signal collected by the overflow sensor when the water inlet and / or the wastewater drain is blocked. The water shortage sensor is connected to the controllable valve and is used to control the valve to open and inject water to replenish water when there is a water shortage in the water inlet area or the water seal area based on the water shortage signal collected by the water shortage sensor.
10. The centralized water seal device for direct discharge of indoor wastewater according to claim 7, characterized in that: The centralized water seal device also includes a controllable valve installed on the unblocking water pipe. An overflow sensor and a water shortage sensor are installed inside the wastewater tank. The overflow sensor is positioned below the lower edge of the indoor wastewater direct discharge inlet and / or not higher than the lowest point where overflow occurs from the overflow pipe. The water shortage sensor is positioned not higher than the lower edge of the overflow hole. The overflow sensor is connected to the controllable valve and is used to control the valve to open and inject water to unblock the blockage based on the overflow signal collected by the overflow sensor when the water inlet and / or the wastewater drain is blocked. The water shortage sensor is connected to the controllable valve and is used to control the valve to open and inject water to replenish water when there is a water shortage in the water inlet area or the water seal area based on the water shortage signal collected by the water shortage sensor.
11. The centralized water seal device for direct discharge of indoor wastewater according to claim 10, characterized in that: The sealing device includes a pluggable sealing plug disposed in the sealing hole or a pluggable sealing plate disposed corresponding to the unblocking hole, and a controllable drive mechanism for driving the pluggable sealing plug to be inserted and removed left and right or driving the pluggable sealing plate to be inserted and removed up and down. The overflow sensor is connected to the controllable drive mechanism and is used to control the controllable drive mechanism to open the pluggable sealing plug or the pluggable sealing plate according to the overflow signal collected by the overflow sensor when the water passage hole and / or the wastewater drain outlet is blocked.
12. The centralized water seal device for direct discharge of indoor wastewater according to claim 1, 2, 3, 5, 6, 8, 10, or 11, characterized in that: A short drainage riser section and / or a short venting riser section are provided in the drainage area through the wastewater tank for connecting with the risers on each floor to construct the drainage riser and / or venting riser of the building's drainage system; the wastewater outlet is connected to the short drainage riser section, and the outlet of the overflow pipe is located in the drainage area of the wastewater tank or connected to the short drainage riser section or the short venting riser section.
13. The centralized water seal device for direct discharge of indoor wastewater according to claim 12, characterized in that: An air pressure balance hole is provided on the short section of the vent riser located inside the wastewater tank. The lower edge of the air pressure balance hole is set below the lower edge of the indoor wastewater direct discharge inlet and above the lower edge of the wastewater outlet. It is used to balance the air pressure in the wastewater tank and to drain water when the wastewater outlet or the short section of the drain riser is blocked.
14. A building drainage system, characterized in that, The device includes a drainage riser and a centralized water seal device for direct discharge of indoor wastewater as described in claims 1-13, which is installed on or embedded in each floor slab, wherein the wastewater drain outlet of the wastewater tank on each floor is connected to the drainage riser.
15. The building drainage system according to claim 14, characterized in that: The bottom end of the drainage riser is provided with a first drainage horizontal pipe and a second drainage horizontal pipe for connecting to the outdoor sewage inspection well, and the second drainage horizontal pipe is set higher than the first drainage horizontal pipe.
16. The building drainage system according to claim 15, characterized in that: The building's drainage system also includes an alarm and a blockage sensor located at the bottom of the drainage riser. The blockage sensor is connected to the alarm and is used to control the alarm to sound an alarm based on the blockage signal collected by the blockage sensor when the first drainage horizontal pipe is blocked.
17. The building drainage system according to claim 16, characterized in that: The blockage sensor is installed inside the second horizontal drain pipe, or the blockage sensor is installed in the drain riser at a position not higher than the lower edge of the inlet of the second horizontal drain pipe.