High-cold-resistant vacuum negative pressure equipment and toilet system thereof

Abstract

The invention relates to high-cold-resistant vacuum negative pressure equipment and a toilet system thereof, and belongs to the technical field of toilet systems, the high-cold-resistant vacuum negative pressure equipment comprises a water inlet device and a drainage device, the water inlet device is used for injecting flushing water into a squatting position, the drainage device is used for draining the flushing water in the squatting position, and the water inlet device comprises a water inlet pipeline and an air inlet pipeline; the water inlet pipeline is communicated with the squatting positions, the air inlet pipeline is used for injecting compressed air into the water inlet pipeline so as to inject flushing water in the water inlet pipeline into the squatting positions, the drainage device comprises a sewage inlet pipeline, a sewage discharge pipeline and a vacuum pump, and the sewage inlet pipeline and the sewage discharge pipeline are communicated with a sewage suction inlet and a sewage discharge outlet of the vacuum pump respectively. The sewage inlet pipeline is communicated with the squatting positions, and the vacuum pump generates negative pressure in the sewage inlet pipeline to suck flushing water in the squatting positions into the sewage outlet pipeline. The toilet has the effect that the toilet can be conveniently used in the alpine region.

Description

Technical Field

[0001] This application relates to the field of toilet system technology, and in particular to a cold-resistant vacuum negative pressure device and its toilet system. Background Technology

[0002] Traditional flush toilet systems face significant challenges in high-altitude and cold regions. The main problems include: Extremely prone to freezing and blockage: Traditional systems consume a large amount of water (about 6 liters per cycle), and the pipes are filled with water, which is prone to freezing in the low temperature environment of winter, leading to pipe freezing and cracking and system failure.

[0003] Water waste: In areas where water resources are already precious on plateaus, the large amount of water used in traditional toilets leads to waste of resources.

[0004] High construction difficulty: Traditional gravity flow drainage pipes require large pipe diameters (DN100 and above) and strict slopes, making them unsuitable for high-altitude areas with complex terrain, deep permafrost, and abundant rocks.

[0005] Limitations of waste disposal: Traditional shredding or collection devices are not very effective at handling large pieces of waste and feminine hygiene products (such as sanitary napkins), and are prone to clogging.

[0006] Leakage and pollution: Pipe ruptures or leaks at joints can easily cause pollutants to leak out, posing a threat to the fragile ecological environment of the plateau. Summary of the Invention

[0007] To facilitate the use of toilets in cold regions, this application provides a cold-resistant vacuum negative pressure device and its toilet system.

[0008] Firstly, this application provides a cold-resistant vacuum negative pressure device, which adopts the following technical solution: A cold-resistant vacuum negative pressure device includes a water inlet device and a drainage device. The water inlet device is used to inject flushing water into the squatting position, and the drainage device is used to drain the flushing water from the squatting position. The water inlet device includes a water inlet pipe and an air inlet pipe. The water inlet pipe is connected to the squatting position, and the air inlet pipe is used to inject compressed air into the water inlet pipe to inject the flushing water in the water inlet pipe into the squatting position. The drainage device includes a sewage inlet pipe, a sewage outlet pipe, and a vacuum pump. The sewage inlet pipe and the sewage outlet pipe are respectively connected to the sewage inlet and sewage outlet of the vacuum pump. The sewage inlet pipe is connected to the squatting position, and the vacuum pump generates negative pressure in the sewage inlet pipe to draw the flushing water in the squatting position into the sewage outlet pipe.

[0009] Optionally, the vacuum pump includes a pump body, a cutting device, a helical screw, and a drive motor. The cutting device, the helical screw, and the drive motor are all housed within the pump body. The sewage inlet and the sewage outlet are both located on the pump body. The helical screw is mounted on the output shaft of the drive motor. The sewage inlet and the sewage outlet are located on opposite sides of the helical screw. The drive motor drives the helical screw to rotate, discharging air from the pump body through the sewage outlet and creating a negative pressure at the sewage inlet, thereby discharging the flushing water from the squatting area. The cutting device is used to cut impurities in the flushing water, and the cut impurities are discharged through a sewage pipe.

[0010] Optionally, the cutting device includes a reamer and a fixed frame disposed within the pump body. The fixed frame is fixedly disposed within the pump body. The reamer is located near the sewage inlet and on the side of the fixed frame near the helical screw. The reamer is coaxially disposed on the helical screw. The drive motor drives the helical screw to rotate, thereby causing the reamer to rotate and perform cutting operations on debris.

[0011] Optionally, the fixing frame is annular and has a hanging plate inside. The hanging plate is arc-shaped, and the length of the arc segment on one side of the hanging plate is greater than the length of the arc segment on the other side. The long side arc segment of the hanging plate has multiple arc teeth, which are used to hang debris and cut the debris.

[0012] Optionally, the reamer includes a mounting ring and a cutting tool disposed on the outer ring of the mounting ring. Multiple cutting tools are disposed and evenly distributed along the circumference of the mounting ring. The cutting tools are hinged to the outer ring of the mounting ring, and the hinge axis of the cutting tools is parallel to the rotation axis of the helical screw.

[0013] Optionally, the water inlet device further includes a pre-storage pipe. The air inlet pipe is connected to the water inlet pipe, and the air inlet pipe is obliquely connected to the water inlet pipe. A connection notch is provided in the middle of the water inlet pipe, and the pre-storage pipe is inserted into the connection notch. The pre-storage pipe is located between the air inlet pipe and the squatting position. The pre-storage pipe is horizontally set and sinks below the water inlet pipe. The flushing water in the water inlet pipe enters the pre-storage pipe, and the air in the air inlet pipe enters the pre-storage pipe, which pushes the flushing water to flow along the water inlet pipe to flush the squatting position.

[0014] Optionally, the pre-storage tube is wrapped with a heating element. After the pre-storage tube contains pre-stored rinsing water, the heating element heats the rinsing water in the pre-storage tube to prevent the rinsing water from freezing.

[0015] Optionally, it also includes a water tank and a pump assembly, the pump assembly including a water pump and an air pump, the water pump's interface being connected to the water tank and the water inlet pipe respectively, and the air pump being connected to the air inlet pipe.

[0016] Secondly, this application provides a toilet system, which adopts the following technical solution: A toilet system using a cold-resistant vacuum negative pressure device also includes squatting positions. The water inlet pipe is connected to the flushing area of ​​the squatting position, and the sewage inlet pipe is connected to the squatting position. The flushing water in the water inlet pipe rinses the squatting position, and then the sewage inlet pipe discharges the wastewater. One vacuum pump corresponds to multiple squatting positions.

[0017] Optionally, it also includes a grey water recycling system and a water storage tank. The grey water recycling system is used to collect water from the washbasin and filter the water. The filtered water is then stored in the water storage tank.

[0018] In summary, this application includes at least one of the following beneficial technical effects: The vacuum collection system uses vacuum equipment to create negative pressure (vacuum degree) in the drainage pipe and uses air to transport the drainage medium. It is suitable for high-altitude and cold regions. The pump body adopts a double-blade design, which, compared with the single-blade design of conventional high-speed rail vacuum pumps, can break up debris and reduce the possibility of toilet blockage. The flushing water is stored in a pre-storage pipe, and the water consumption for a single flush is only 0.6 liters (or 0.5 liters), which is only about one-tenth of that of a traditional water-flushing toilet, thus reducing the amount of flushing water used and adapting to the water scarcity in high-altitude and cold regions; the water used for washing the sink is treated by a filtration device and then enters a water storage tank, where the water can be used for flushing the toilet, improving the efficiency of water resource utilization. The internal environment of the pipeline is under negative pressure, and the main transport medium is air and a small amount of dirt slurry, which reduces the risk of icing inside the pipeline; in addition, maintaining a negative pressure environment inside the pipeline can prevent water leakage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a cold-resistant vacuum negative pressure device according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the fixing frame in a cold-resistant vacuum negative pressure device according to an embodiment of this application; Figure 3 This is a schematic diagram of the reamer structure in a cold-resistant vacuum negative pressure device according to an embodiment of this application; Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle.

[0020] Explanation of reference numerals in the attached drawings: 1. Water inlet device; 11. Water inlet pipe; 12. Air inlet pipe; 2. Drainage device; 21. Inlet pipe; 22. Outlet pipe; 23. Vacuum pump; 231. Pump body; 232. Cutting device; 2331. Mounting ring; 2332. Cutting tool; 233. Helical screw; 234. Drive motor; 3. Squatting position; 4. Sewage suction inlet; 5. Sewage discharge outlet; 6. Reamer; 7. Fixing frame; 8. Hanging plate; 9. Arc-shaped teeth; 10. Pre-storage pipe; 13. Electric heating wire; 14. Thermal insulation material; 15. Water tank; 16. Water pump; 17. Air pump; 18. Grey water recycling system; 181. Filter element; 182. Sewage tank; 183. Sewage pipe; 184. Water storage tank; 19. Handwashing station. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0022] This application discloses a cold-resistant vacuum negative pressure device. (Refer to...) Figure 1 The high-altitude cold-resistant vacuum negative pressure equipment includes a water inlet device 1 and a drainage device 2. The water inlet device 1 is used to inject flushing water into the squatting position 3, and the drainage device 2 is used to drain the flushing water from the squatting position 3. The water inlet device 1 includes a water inlet pipe 11 and an air inlet pipe 12. The water inlet pipe 11 is connected to the squatting position 3. The air inlet pipe 12 is used to inject compressed air into the water inlet pipe 11 to inject the flushing water in the water inlet pipe 11 into the squatting position 3. The drainage device 2 includes a sewage inlet pipe 21, a sewage outlet pipe 22, and a vacuum pump 23. The sewage inlet pipe 21 and the sewage outlet pipe 22 are respectively connected to the sewage inlet 4 and the sewage outlet 5 of the vacuum pump 23. The sewage inlet pipe 21 is connected to the squatting position 3. The vacuum pump 23 generates negative pressure in the sewage inlet pipe 21 and draws the flushing water in the squatting position 3 into the sewage outlet pipe 22.

[0023] When the negative pressure device is applied to the toilet, the flushing water is stored in the water inlet pipe 11 and injected into the water inlet pipe 11 through the air inlet pipe 12, which pushes the flushing water to flow in the water inlet pipe 11 and enter the squatting position 3 to flush away the debris in the squatting position 3. When the toilet is flushed, the vacuum pump 23 is started. The vacuum pump 23 generates negative pressure in the sewage pipe 22, which extracts the debris and flushing water in the sewage pipe 22. The flushing water flows through the vacuum pump 23 to the sewage pipe 22 and is then discharged from the sewage pipe 22.

[0024] Reference Figure 1 , Figure 2 and Figure 3In this embodiment, the vacuum pump 23 includes a pump body 231, a cutting device 232, a spiral screw 233, and a drive motor 234. The pump body 231 has a cavity. The cutting device 232, the spiral screw 233, and the drive motor 234 are all disposed within the cavity of the pump body 231. The sewage inlet 4 and the sewage outlet 5 are both disposed on the pump body 231. The spiral screw 233 is disposed on the output shaft of the drive motor 234. The sewage inlet 4 and the sewage outlet 5 are respectively located on both sides of the spiral screw 233. The drive motor 234 drives the spiral screw 233 to rotate, thereby discharging the air in the pump body 231 from the sewage outlet 5, making the sewage inlet 4 a negative pressure state, and discharging the flushing water in the squatting position 3. The cutting device 232 is used to cut the impurities in the flushing water and discharge the cut impurities through the sewage pipe 22.

[0025] After the vacuum pump 23 is started, the drive motor 234 drives the spiral screw 233 to rotate. The spiral screw 233 compresses the air in the pump body 231 and transports the air in the water inlet pipe 11, creating a negative pressure at the water inlet pipe 11. This draws the flushing water and debris from the water inlet pipe 11 and the squatting position 3 into the vacuum pump 23 and discharges them from the sewage outlet 5. The operation is simple and convenient. Furthermore, under the action of the cutting device 232, when debris enters the pump body 231, it is cut, making it easier for larger debris to be discharged through the vacuum pump 23.

[0026] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the cutting device 232 includes a reamer 6 and a fixing frame 7 disposed within the pump body 231. The fixing frame 7 is fixedly disposed within the pump body 231. The reamer 6 is located near the sewage inlet 4 and on the side of the fixing frame 7 near the helical screw 233. The reamer 6 is coaxially disposed on the helical screw 233. The drive motor 234 drives the helical screw 233 to rotate, which in turn drives the reamer 6 to rotate and perform the cutting operation on the debris. When the vacuum pump 23 is started, the drive motor 234 drives the helical screw 233 to rotate, which in turn drives the reamer 6 to rotate, and the reamer 6 rotates to perform the cutting operation on the debris. The operation is simple and convenient.

[0027] Reference Figure 1 , Figure 2 and Figure 3 Furthermore, in this embodiment, the fixing frame 7 is annular and has a hanging plate 8 inside. The hanging plate 8 is arc-shaped, and the length of the arc segment on one side of the hanging plate 8 is greater than the length of the arc segment on the other side. The long side arc segment of the hanging plate 8 is provided with multiple arc teeth 9. The arc teeth 9 are used to hang debris and cut the debris. When the debris enters the pump body 231, some of the debris is hung on the fixing frame 7 and drifts with the water flow, which facilitates the cutting operation of the reamer 6 on the debris.

[0028] Reference Figure 1 , Figure 2 and Figure 3 Furthermore, multiple cutters 6 are provided inside the pump body 231, and the multiple cutters 6 are arranged at intervals.

[0029] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment, the reamer 6 includes a mounting ring 2331 and a cutting tool 2332 disposed on the outer ring of the mounting ring 2331. The mounting ring 2331 is sleeved on the helical screw 233. Multiple cutting tools 2332 are evenly arranged along the circumference of the mounting ring 2331. The cutting tools 2332 are hinged to the outer ring of the mounting ring 2331, and the hinge axis of the cutting tools 2332 is parallel to the rotation axis of the helical screw 233. When the vacuum pump 23 is in the start / stop state, the cutting tool 2332 is attached to the outer ring of the mounting ring 2331. When the vacuum pump 23 is started, the helical screw 233 rotates, causing the mounting ring 2331 to rotate, and the rotation of the mounting ring 2331 causes the cutting tool to rotate. As the vacuum pump 2332 rotates, the blade 2332 gradually unfolds under centrifugal force to cut the debris, thus improving the cutting effect. On the other hand, the blade 2332 is hinged to the mounting ring 2331. When impurities are caught on the blade 2332, centrifugal force throws the impurities off the blade 2332, reducing the possibility of the reamer 6 getting stuck. Furthermore, when the vacuum pump 23 stops, the blade 2332 hangs down under gravity, making it easier for the debris caught on the blade 2332 to fall off, further reducing the possibility of debris getting stuck in the vacuum pump 23 and the reamer 6, thus facilitating the cutting operation.

[0030] Reference Figure 1 , Figure 2 and Figure 3 In this embodiment of the application, the water inlet device 1 further includes a pre-storage pipe 10, an air inlet pipe 12 connected to a water inlet pipe 11, the air inlet pipe 12 being obliquely connected to the water inlet pipe 11, a connection notch being provided in the middle of the water inlet pipe 11, the pre-storage pipe 10 being connected into the connection notch, the pre-storage pipe 10 being located between the air inlet pipe 12 and the squatting position 3, the pre-storage pipe 10 being horizontally set and sinking below the water inlet pipe 11, the flushing water in the water inlet pipe 11 entering the pre-storage pipe 10, and the air in the air inlet pipe 12 entering the pre-storage pipe 10 and pushing the flushing water to flow along the water inlet pipe 11 to flush the squatting position 3.

[0031] Before flushing the squatting position 3, the water inlet pipe 11 delivers flushing water to the pre-storage pipe 10 and stores the flushing water in the pre-storage pipe. Then, compressed air is injected into the air inlet pipe 12. The compressed air flows along the air inlet pipe 12 to the pre-storage pipe 10. As the compressed air continues to be injected, it pushes the flushing water along the water inlet pipe 11, allowing the flushing water to enter the squatting position 3 and flush away the debris in the squatting position 3. The operation is simple and convenient. Furthermore, the flushing water is stored in the pre-storage pipe 10 instead of staying in the water inlet pipe 11, thus avoiding the possibility of the water inlet pipe 11 being damaged by freezing.

[0032] Reference Figure 1 and Figure 4 In this embodiment, a heating element is wrapped around the outside of the pre-storage tube 10. After the pre-storage tube 10 stores flushing water, the heating element heats the flushing water in the pre-storage tube 10 to prevent the flushing water from freezing. When the flushing water is temporarily stored in the pre-storage tube 10, the heating element heats the outer wall of the pre-storage tube 10 to prevent the flushing water from freezing, thus facilitating the normal use of the toilet. Furthermore, the heating element includes an electric heating wire 13 wrapped around the pre-storage tube 10. The electric heating wire 13 is spirally wound around the pre-storage tube 10 and is electrically connected to the mains power. Furthermore, the heating element also includes a heat insulation material 14 wrapped around the pre-storage tube 10, with the heating wire wrapped inside the heat insulation material 14.

[0033] Reference Figure 1 In this embodiment, the system also includes a water tank 15 and a pump assembly. The pump assembly includes a water pump 16 and an air pump 17. The interface of the water pump 16 is connected to the water tank 15 and the water inlet pipe 11, respectively, and the air pump 17 is connected to the air inlet pipe 12.

[0034] The implementation principle of a cold-resistant vacuum negative pressure device in this application is as follows: When the negative pressure device is applied to the toilet, the flushing water is stored in the water inlet pipe 11 and injected into the water inlet pipe 11 through the air inlet pipe 12, which pushes the flushing water to flow in the water inlet pipe 11 and enter the squatting position 3 to flush away the debris in the squatting position 3. When the toilet is flushed, the vacuum pump 23 is started. The vacuum pump 23 generates negative pressure in the sewage pipe 22, which extracts the debris and flushing water in the sewage pipe 22. The flushing water flows through the vacuum pump 23 to the sewage pipe 22 and is then discharged from the sewage pipe 22.

[0035] This application discloses a toilet system, referring to... Figure 1The toilet system uses a cold-resistant vacuum negative pressure device and includes squatting positions 3. A water inlet pipe 11 connects to the flushing area of ​​squatting position 3, and a waste inlet pipe 21 connects to squatting position 3. Flushing water in the water inlet pipe 11 flushes the squatting position 3, and then the waste water is discharged through the waste inlet pipe 21. One vacuum pump 23 corresponds to multiple squatting positions 3. When a squatting position 3 is used, the water pump 16 is started, injecting flushing water into the water inlet pipe 11, which then flows into the pre-storage pipe 10, storing the flushing water. Then, the air pump 17 is started, injecting compressed air into the water inlet pipe 11 and the pre-storage pipe 10, propelling the flushing water along the water inlet pipe 11 to the squatting position 3. Finally, the vacuum pump 23 is started, drawing air from the waste inlet pipe 21, which carries debris and flushing water into the vacuum pump 23, where it is then discharged. Reference Figure 1 Furthermore, it also includes a greywater recycling system 18 and a water storage tank 184. The greywater recycling system 18 is used to collect water from the washbasin 19 and filter the water. The filtered water is stored in the water storage tank 184. The greywater recycling system 18 includes a filter element 181, a sewage tank 18215, and a sewage pipe 183 disposed between the washbasin 19 and the water storage tank 184. The filter element 181 includes a sewage filter. The sewage pipe 183 is used to connect the washbasin 19 and the water storage tank 184. The sewage filter is located on the sewage pipe 183 and filters the water from the washbasin 19. Furthermore, the water storage tank 184 is connected to the water inlet pipe 11. Furthermore, the sewage tank 18215 is connected to the sewage filter and is used to collect the sewage generated by the sewage filter.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A high-altitude and cold-resistant vacuum negative pressure device, characterized in that: The device includes a water inlet device (1) and a drain device (2). The water inlet device (1) is used to inject flushing water into the squatting position (3), and the drain device (2) is used to drain the flushing water from the squatting position (3). The water inlet device (1) includes a water inlet pipe (11) and an air inlet pipe (12). The water inlet pipe (11) is connected to the squatting position (3), and the air inlet pipe (12) is used to inject compressed air into the water inlet pipe (11) to inject the flushing water in the water inlet pipe (11) into the squatting position. Within the squatting position (3), the drainage device (2) includes an inlet pipe (21), a outlet pipe (22), and a vacuum pump (23). The inlet pipe (21) and the outlet pipe (22) are respectively connected to the sewage inlet (4) and the sewage outlet (5) of the vacuum pump (23). The inlet pipe (21) is connected to the squatting position (3). The vacuum pump (23) generates negative pressure in the inlet pipe (21) and draws the flushing water in the squatting position (3) into the outlet pipe (22).

2. The high-altitude cold-resistant vacuum negative pressure device according to claim 1, characterized in that: The vacuum pump (23) includes a pump body (231), a cutting device (232), a spiral screw (233), and a drive motor (234). The cutting device (232), the spiral screw (233), and the drive motor (234) are all located inside the pump body (231). The sewage inlet (4) and the sewage outlet (5) are both located on the pump body (231). The spiral screw (233) is located on the output shaft of the drive motor (234). The sewage inlet (4) and the sewage outlet (5) are located on both sides of the spiral screw (233). The drive motor (234) drives the spiral screw (233) to rotate and discharge the air in the pump body (231) from the sewage outlet (5), so that the sewage inlet (4) is in a negative pressure state, and the flushing water in the squatting position (3) is discharged. The cutting device (232) is used to cut the impurities in the flushing water and discharge the cut impurities through the sewage pipe (22).

3. The high-altitude cold-resistant vacuum negative pressure device according to claim 2, characterized in that: The cutting device (232) includes a reamer (6) and a fixing frame (7) disposed in the pump body (231). The fixing frame (7) is fixedly disposed in the pump body (231). The reamer (6) is close to the sewage inlet (4) and located on the side of the fixing frame (7) close to the helical screw (233). The reamer (6) is coaxially disposed on the helical screw (233). The drive motor (234) drives the helical screw (233) to rotate, thereby driving the reamer (6) to rotate and perform cutting operations on debris.

4. The high-altitude cold-resistant vacuum negative pressure device according to claim 3, characterized in that: The fixing frame (7) is ring-shaped and has a hanging plate (8) inside. The hanging plate (8) is arc-shaped, and the length of the arc segment on one side of the hanging plate (8) is greater than the length of the arc segment on the other side. The long side arc segment of the hanging plate (8) is provided with multiple arc teeth (9). The arc teeth (9) are used to hang up debris and cut the debris.

5. The high-altitude cold-resistant vacuum negative pressure device according to claim 3, characterized in that: The reamer (6) includes a mounting ring (2331) and a cutting tool (2332) disposed on the outer ring of the mounting ring (2331). Multiple cutting tools (2332) are disposed and evenly arranged along the circumference of the mounting ring (2331). The cutting tools (2332) are hinged to the outer ring of the mounting ring (2331), and the hinge axis of the cutting tools (2332) is parallel to the rotation axis of the helical screw (233).

6. The high-altitude cold-resistant vacuum negative pressure device according to claim 1, characterized in that: The water inlet device (1) also includes a pre-storage pipe (10). The air inlet pipe (12) is connected to the water inlet pipe (11). The air inlet pipe (12) is obliquely connected to the water inlet pipe (11). A connection notch is provided in the middle of the water inlet pipe (11). The pre-storage pipe (10) is connected to the connection notch. The pre-storage pipe (10) is located between the air inlet pipe (12) and the squatting position (3). The pre-storage pipe (10) is set horizontally and sinks down and is lower than the water inlet pipe (11). The flushing water in the water inlet pipe (11) enters the pre-storage pipe (10). The air in the air inlet pipe (12) enters the pre-storage pipe (10) and pushes the flushing water to flow along the water inlet pipe (11) to flush the squatting position (3).

7. The high-altitude cold-resistant vacuum negative pressure device according to claim 6, characterized in that: The pre-storage tube (10) is wrapped with a heating element. After the pre-storage tube (10) stores the rinsing water, the heating element heats the rinsing water in the pre-storage tube (10) to prevent the rinsing water from freezing.

8. The high-altitude cold-resistant vacuum negative pressure device according to claim 1, characterized in that: It also includes a water tank (15) and a pump assembly, the pump assembly including a water pump (16) and an air pump (17), the interface of the water pump (16) being connected to the water tank (15) and the water inlet pipe (11) respectively, and the air pump (17) being connected to the air inlet pipe (12).

9. A toilet system, characterized in that: The cold-resistant vacuum negative pressure device as described in any one of claims 1-8 further includes a squatting position (3), wherein the water inlet pipe (11) is connected to the flushing area of ​​the squatting position (3), the sewage inlet pipe (21) is connected to the squatting position (3), the flushing water in the water inlet pipe (11) flushes the squatting position (3), and then the sewage inlet pipe (21) discharges the water, and one vacuum pump (23) corresponds to multiple squatting positions (3).

10. A toilet system according to claim 9, characterized in that: It also includes a greywater recycling system (18) and a water storage tank (184). The greywater recycling system (18) is used to collect water from the washbasin (19) and filter the water. The water filtered by the greywater recycling system (18) is stored in the water storage tank (184).

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