A locomotive toilet antifreeze pipeline structure and pipeline antifreeze method

Abstract

The invention discloses an antifreeze pipeline structure and pipeline antifreeze method for a locomotive toilet, comprising a water tank, a toilet, a washstand, a water booster, a valve, an overflow pipe and a water pump; the water booster is connected to the toilet through a first pipe, and is connected to the washstand through a second pipe, a valve is arranged between the water booster and the first pipe and the second pipe, a water outlet of the water pump is connected to the second pipe, a water inlet is connected to the water tank through a third pipe, a water outlet of the water pump is connected to the overflow pipe through a fourth pipe, a solenoid valve fourth is arranged on the fourth pipe, a solenoid valve second is arranged on the second pipe, and an air processing unit is also included, the air processing unit is connected to a blow pipe first, the blow pipe first is connected to the pipe between the water booster and the valve, and a one-way valve is arranged on the blow pipe first; the invention can timely clean the water in the pipe by arranging the blow pipe, prevent the water in the pipe from freezing, affect the continuous use of the toilet and the washstand, and reduce the possibility of damage to the pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of railway locomotive sanitary and environmental protection equipment, and in particular relates to a locomotive toilet antifreeze pipeline structure and a pipeline antifreeze method. Background Art

[0002] my country's railway locomotive sanitary equipment is currently gradually adopting vacuum toilet technology. In actual application, due to the vast geographical area and large temperature differences, the general ambient temperature difference is between -40℃ and +70℃. At 0°, the toilet water pipeline will freeze, causing the toilet to be unusable. The existing technology usually uses a heater to heat and melt the ice. Due to the long pipeline and many U-shaped bends, the same length when heated, it is inconvenient to use and has high energy consumption, is easy to damage, and has high cost of use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a locomotive toilet antifreeze pipeline structure and pipeline antifreeze method, by setting a blow pipe structure to blow out the residual water in the equipment pipeline, effectively preventing the pipeline from freezing, affecting the use of the pipeline, and reducing pipeline damage.

[0004] The technical solutions adopted by the present invention to solve the problems of the prior art are as follows:

[0005] Provided is a locomotive toilet antifreeze pipeline structure, comprising a water tank, a toilet, a washstand, a water booster, a valve, an overflow pipe and a water pump; the water booster is connected to the toilet through a pipe 1, and is connected to the washstand through a pipe 2; a valve is arranged between the water booster and the pipe 1 and the pipe 2, and the valve is used to connect only the water booster and the pipe 1 or the water booster and the pipe 2; under normal conditions, the valve connects the water booster and the pipe 2; the water outlet of the water pump is connected to the pipe 2, and the water inlet is connected to the water tank through a pipe 3, and the water pump is used to pump the water in the water tank into the water tank; The water is pumped into the water booster through pipeline 2; the water outlet of the water pump is connected with the overflow pipe through pipeline 4, and the water pump is used to pump the water in the water tank through pipeline 4 and discharge it out of the locomotive through the overflow pipe. The pipeline 4 is provided with a solenoid valve 4; the pipeline 2 is provided with a solenoid valve 2; the solenoid valve 2 and the solenoid valve 4 are used to control the on-off of pipeline 2 and pipeline 4; and it also includes an air processing unit, the air processing unit is connected to a blow pipe 1, the blow pipe 1 is connected to the pipeline between the water booster and the valve, and the blow pipe 1 is provided with a one-way valve, which is used to prevent the water in the pipeline from flowing back.

[0006] Furthermore, in order to better control the connection and disconnection between the water booster and pipeline one or pipeline two, the valve is a pneumatic water valve, the pneumatic water valve is connected to the air processing unit, and an electromagnetic valve one is also provided between the pneumatic water valve and the air processing unit. The reversing of the pneumatic water valve is further controlled by the electromagnetic valve one to select the connection and disconnection between the water booster and pipeline one or pipeline two.

[0007] Furthermore, in order to better complete the water pump pumping, drainage and blowing out of residual water in the pipe, the solenoid valve 2 is located between the interface of the water pump outlet connected to the pipe 2 and the washbasin; the solenoid valve 2 and the solenoid valve 4 are normally open when not powered, that is, when the solenoid valve 2 and the solenoid valve 4 are not powered, the pipe 2 to the washbasin is in a connected state, and the water pump to the pipe 4 to the overflow pipe is in a connected state; the solenoid valve 1 and the solenoid valve 3 are normally closed when not powered.

[0008] Furthermore, a throttle valve 1 is provided on the air path between the solenoid valve 3 and the blowpipe; and a throttle valve 2 is provided between the solenoid valve 2 and the washbasin.

[0009] Furthermore, it also includes a pressure sensor, which is arranged on the gas path.

[0010] Furthermore, a heater is provided inside the water tank, and the heater is preferably arranged at the bottom of the water tank, so as to heat the water in the water tank to prevent freezing.

[0011] The present invention also provides an antifreezing method based on the above pipeline structure, which specifically comprises the following steps:

[0012] S1. Turn on the water pump, solenoid valve 2 and solenoid valve 4, and the water booster is filled with water. In this state, there is no connection between pipe 2 and the washbasin, and there is no connection between the water pump and pipe 4 and the overflow pipe. Water flows through pipe 2 to the water booster;

[0013] S2. Open solenoid valve 1, turn off the water pump, keep solenoid valve 2 and solenoid valve 4 open, connect the gas treatment unit and the pneumatic water valve, the pneumatic water valve is switched, and the water booster and pipe 1 are connected to complete the flushing of the toilet; in this state, the water in the water booster flows to the toilet through pipe 1 to complete the flushing;

[0014] S3. Close solenoid valve 1, close solenoid valve 2, keep solenoid valve 4 open, the pneumatic water valve is reset, the water booster and pipe 1 are blocked, the water booster and pipe 2 are connected to complete the wash, in this state, the water in the water booster flows through pipe 2 to the washbasin, completing the wash operation;

[0015] S4. Open solenoid valve 1, solenoid valve 3, and close solenoid valve 4, connecting the gas treatment unit and the pneumatic water valve, the pneumatic water valve is switched, and the air flow in the gas treatment unit passes through a blowpipe to blow out the residual water in the toilet and the pipe, completing the cleaning of the residual water in the toilet;

[0016] S5. Close the solenoid valve 1, reset the pneumatic water valve, block the water booster and pipe 1, and blow out the residual water in pipe 2 and the washbasin through the blowpipe 1 in the air treatment unit to complete the residual water cleaning of the washbasin;

[0017] S6. When the water tank needs to be emptied, turn on the water pump and solenoid valve 2, connect pipe 3, the water pump and pipe 4, evacuate the water tank through pipe 3 and discharge it to pipe 4; turn on solenoid valve 3, and the air flow in the air treatment unit passes through blowpipe 1 to blow the residual water in pipes 2 and 4 out of the overflow pipe; in this process, the water booster is also filled with water, so steps S2 to S5 are cycled again.

[0018] Furthermore, in order to better clean the residual water in the water pump and pipe four, a blow pipe two is also provided. The blow pipe two is connected from the air treatment unit and connected through the air path to the water inlet end of the water pump. A one-way valve is provided on the blow pipe two.

[0019] Furthermore, the antifreeze method including the blowpipe 2 specifically comprises the following steps:

[0020] S1. Turn on the water pump, solenoid valve 2 and solenoid valve 4, and the water booster is filled with water;

[0021] S2. Open solenoid valve 1, turn off the water pump, keep solenoid valve 2 and solenoid valve 4 open, connect the gas treatment unit and the pneumatic water valve, the pneumatic water valve is switched, connect the water booster and the pipe to complete the flushing of the toilet;

[0022] S3. Close solenoid valve 1, close solenoid valve 2, keep solenoid valve 4 open, reset the pneumatic water valve, block the water booster and pipe 1, connect the water booster and pipe 2 to complete the wash;

[0023] S4. Open solenoid valve 1, solenoid valve 3, and close solenoid valve 4, connect the gas treatment unit and the pneumatic water valve, the pneumatic water valve is reversed, and the airflow in the gas treatment unit blows out the residual water in the toilet and pipe 1 through the blowpipe 1, completing the cleaning of the residual water in the toilet; there is one more airflow path, that is, the airflow blows out the residual water in the water pump and pipe 4 through the blowpipe 2, which can better complete the cleaning of the residual water in the water pump and pipe 4;

[0024] S5. Close the solenoid valve 1, reset the pneumatic water valve, block the water booster and pipe 1, and blow out the residual water in pipe 2 and the washbasin through the blowpipe 1 in the air treatment unit to complete the residual water cleaning of the washbasin;

[0025] S6. When the water tank needs to be emptied, turn on the water pump and solenoid valve 2, connect pipe 3, the water pump and pipe 4, evacuate the water tank and discharge it through pipe 3 to pipe 4; repeat steps S2 to S5 to blow out the water in the pipe.

[0026] The beneficial effects are as follows:

[0027] By setting up a blow pipe, the water in the pipe can be cleaned in time when the toilet and washbasin are not in use, preventing the water in the pipe from freezing, affecting the continued use of the toilet and washbasin, and reducing the possibility of damage to the pipe; when the toilet equipment is not used for a long time, the water in the water tank can be drained to prevent the water tank from freezing, but after the water tank is emptied, water will remain in the pipe, and the blow pipe can be used to further clean the residual water in all pipes, which can better achieve the antifreeze of the locomotive toilet equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the antifreeze pipeline structure of Example 1;

[0029] Figure 2 This is a schematic diagram of the antifreeze pipeline structure of Example 2. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with specific implementation modes.

[0031] Example 1

[0032] like Figure 1 As shown, this embodiment provides an antifreeze pipeline structure for a locomotive toilet, including a water tank 1, a toilet 2, a washbasin 3, a water booster 4, a valve 5, an overflow pipe 6 and a water pump 7; the water booster 4 is connected to the toilet 2 through a pipe 10, and is connected to the washbasin 3 through a pipe 20, and a valve 5 is provided between the water booster 4 and the pipe 10 and the pipe 2 20, and the valve 5 is used to connect only the water booster 4 and the pipe 1 10 or the water booster 4 and the pipe 2 10. In this embodiment, under normal conditions, the valve 5 connects the water booster 4 and the pipe 2 20; the water outlet of the water pump 7 is connected to the pipe 2 20, and the water inlet end is connected to the water tank 1 through the pipe 3 30, which is used for the water pump 7. The water in the water tank 1 is pumped into the water booster 4 through the pipe 20; the water outlet of the water pump 7 is connected with the overflow pipe 6 through the pipe 40, and the water pump 7 is used to pump the water in the water tank 1 through the pipe 40 and discharge it out of the locomotive through the overflow pipe 6. The pipe 40 is provided with a solenoid valve 400; the pipe 20 is provided with a solenoid valve 200; the solenoid valve 200 and the solenoid valve 400 are used to control the on-off of the pipe 20 and the pipe 40; it also includes an air processing unit 8, the air processing unit 8 is connected to the blow pipe 11, the blow pipe 11 is connected to the pipe between the water booster 4 and the valve 5, the blow pipe 11 is provided with a one-way valve 9, and the one-way valve 9 is used to prevent the water in the pipe from flowing back.

[0033] In this embodiment, in order to better control the on-off between the water booster 4 and the pipe 10 or the pipe 2 20, the valve 5 is a pneumatic water valve, the pneumatic water valve is connected to the air processing unit 8, and a solenoid valve 100 is also provided between the pneumatic water valve and the air processing unit 8. The solenoid valve 100 is used to further control the reversing of the pneumatic water valve to select the on-off between the water booster 4 and the pipe 10 or the pipe 2 20.

[0034] In this embodiment, in order to better complete the pumping and drainage of water by the water pump 7 and the blowing out of the residual water in the pipeline, the solenoid valve 2 200 is located between the interface A where the water outlet of the water pump 7 is connected to the pipeline 2 20 and the washbasin 3; the solenoid valve 2 200 and the solenoid valve 4 400 are normally open when not powered, that is, when the solenoid valve 2 200 and the solenoid valve 4 400 are not powered, the pipeline 2 20 to the washbasin 3 is in a connected state, and the water pump 7 to the pipeline 4 40 to the overflow pipe 6 is in a connected state; the solenoid valve 100 and the solenoid valve 3 300 are normally closed when not powered.

[0035] In this embodiment, a throttle valve 16 is further provided on the air path 13 between the solenoid valve 3 300 and the blowpipe 1 11 ; a throttle valve 2 17 is provided between the solenoid valve 2 200 and the washstand 3 .

[0036] The device further comprises a pressure sensor 14 , which is arranged on the gas circuit 13 .

[0037] A heater 15 is provided inside the water tank 1. In this embodiment, the heater 15 is arranged at the bottom of the water tank 1, which can better heat the water in the water tank 1 to prevent freezing.

[0038] The working principle of this embodiment is as follows:

[0039] The first step is water filling state: the water pump 7, the second solenoid valve 200 and the fourth solenoid valve 400 are turned on, and the water booster 4 is filled with water. In this state, the second pipe 20 and the wash basin 3 are not connected, and the water pump 7 and the fourth pipe 40 and the overflow pipe 6 are not connected. Water flows to the water booster 4 through the second pipe 20;

[0040] Step 2, toilet flushing process: open solenoid valve 100, close water pump 7, keep solenoid valve 200 and solenoid valve 4 400 open, connect air treatment unit 8 and pneumatic water valve, change the direction of pneumatic water valve, connect water booster 4 and pipe 10 to complete flushing of toilet 2; in this state, water in water booster 4 flows to toilet 2 through pipe 10 to complete flushing;

[0041] Step 3, washing process: close the solenoid valve 100, close the solenoid valve 200, keep the solenoid valve 4 400 open, reset the pneumatic water valve, block the water booster 4 and the pipe 10, connect the water booster 4 and the pipe 2 20 to complete the washing. In this state, the water in the water booster 4 flows to the washstand 3 through the pipe 2 20 to complete the washing operation;

[0042] Step 4, the residual water cleaning process in the toilet and pipeline 1: open the solenoid valve 100, the solenoid valve 3 300, close the solenoid valve 4 400, connect the air treatment unit 8 and the pneumatic water valve, the pneumatic water valve is reversed, and the air flow in the air treatment unit 8 blows out the residual water in the toilet 2 and the pipeline 1 10 through the blowpipe 1 11, completing the cleaning of the residual water in the toilet; due to the addition of the blowpipe 2 12, there is one more air flow path, that is, the air flow blows out the residual water in the water pump 7 and the pipeline 4 40 through the blowpipe 2 12, which can better complete the cleaning of the residual water in the water pump 7 and the pipeline 4 40;

[0043] Step 5, residual water cleaning process in the washstand and pipe 2: close the solenoid valve 100, reset the pneumatic water valve, block the water booster 4 and pipe 10, and the air flow in the air treatment unit 8 blows out the residual water in pipe 2 20 and the washstand 3 through the blowpipe 11, completing the residual water cleaning of the washstand;

[0044] Step 6. When the water tank needs to be emptied, turn on the water pump 7 and the solenoid valve 2 200, connect the pipe 3 30, the water pump 7 and the pipe 4 40, evacuate the water tank 1 and discharge it from the pipe 3 30 to the pipe 4 40; turn on the solenoid valve 3 300, and the air flow in the air treatment unit 8 passes through the blowpipe 1 11 to blow the residual water in the pipe 2 20 and the pipe 4 40 out of the overflow pipe 6; in this process, the water booster 4 is also filled with water, so steps 2 to 5 are cycled again to complete the cleaning of all pipes.

[0045] Example 2

[0046] like Figure 2 As shown, the difference between this embodiment and embodiment 1 is that, in order to better complete the cleaning of the residual water in the water pump 7 and the pipeline four 40, a blow pipe 12 is also provided. The blow pipe 12 is connected from the air treatment unit 8 and is connected through the air path 13 to the water inlet end of the water pump 8. A one-way valve 9 is provided on the blow pipe 12.

[0047] The working principle of this embodiment is as follows:

[0048] The first step is water filling state: the water pump 7, the second solenoid valve 200 and the fourth solenoid valve 400 are turned on, and the water booster 4 is filled with water. In this state, the second pipe 20 and the wash basin 3 are not connected, and the water pump 7 and the fourth pipe 40 and the overflow pipe 6 are not connected. Water flows to the water booster 4 through the second pipe 20;

[0049] Step 2, toilet flushing process: open solenoid valve 100, close water pump 7, keep solenoid valve 200 and solenoid valve 4 400 open, connect air treatment unit 8 and pneumatic water valve, change the direction of pneumatic water valve, connect water booster 4 and pipe 10 to complete flushing of toilet 2; in this state, water in water booster 4 flows to toilet 2 through pipe 10 to complete flushing;

[0050] Step 3, washing process: close the solenoid valve 100, close the solenoid valve 200, keep the solenoid valve 4 400 open, reset the pneumatic water valve, block the water booster 4 and the pipe 10, connect the water booster 4 and the pipe 2 20 to complete the washing. In this state, the water in the water booster 4 flows to the washstand 3 through the pipe 2 20 to complete the washing operation;

[0051] Step 4: Cleaning process of residual water in the toilet and pipe 1: Open solenoid valve 100, solenoid valve 3 300, close solenoid valve 4 400, connect the air treatment unit 8 and the pneumatic water valve, the pneumatic water valve is reversed, and the air flow in the air treatment unit 8 passes through the blowpipe 11 to blow out the residual water in the toilet 2 and pipe 10, completing the cleaning of the residual water in the toilet;

[0052] Step 5, residual water cleaning process in the washstand and pipe 2: close the solenoid valve 100, reset the pneumatic water valve, block the water booster 4 and pipe 10, and the air flow in the air treatment unit 8 blows out the residual water in pipe 2 20 and the washstand 3 through the blowpipe 11, completing the residual water cleaning of the washstand;

[0053] Step 6. When the water tank needs to be emptied, turn on the water pump 7 and the solenoid valve 2 200, connect the pipe 3 30, the water pump 7 and the pipe 4 40, and evacuate the water tank 1 through the pipe 3 30 to the pipe 4 40; thus, the steps 2 to 5 are cycled again to complete the cleaning of all pipes.

[0054] By setting a blow pipe, Example 1 and Example 2 can clean the water in the pipe in time when the toilet and washbasin are not in use, prevent the water in the pipe from freezing, affect the continued use of the toilet and washbasin, and reduce the possibility of damage to the pipe; when the toilet equipment is not used for a long time, the water in the water tank can be drained to prevent the water tank from freezing, but after the water tank is emptied, water will remain in the pipe, and the residual water in all pipes can be further cleaned by blowing the pipe, which can better achieve the anti-freezing of the locomotive toilet equipment.

[0055] Obviously, the above embodiments are merely examples for clearly explaining the technical solutions of the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included in the protection of the claims of the present invention.

Claims

1. A method for antifreezing a locomotive toilet antifreeze pipeline structure, characterized in that: The antifreeze piping structure of a locomotive toilet comprises a water tank (1), a toilet (2), a washstand (3), a water booster (4), a valve (5), an overflow pipe (6) and a water pump (7); The water booster (4) is connected to the toilet (2) via a pipe 1 (10), and is connected to the washbasin (3) via a pipe 2 (20); a valve (5) is provided between the water booster (4) and the pipe 1 (10) and the pipe 2 (20); The water outlet of the water pump (7) is connected to the second pipe (20), and the water inlet is connected to the water tank (1) through the third pipe (30); The water outlet of the water pump (7) is connected to the overflow pipe (6) via a fourth pipe (40), and a fourth solenoid valve (400) is provided on the fourth pipe (40); The second pipe (20) is provided with a second solenoid valve (200); It also comprises an air processing unit (8), the air processing unit (8) is connected to a blow pipe (11), the blow pipe (11) is connected to a pipeline between the water booster (4) and the valve (5), and a one-way valve (9) is provided on the blow pipe (11); The valve (5) is a pneumatic water valve, which is connected to the gas processing unit (8), and a solenoid valve (100) is provided between the pneumatic water valve and the gas processing unit (8); the gas processing unit (8) is connected to the blowpipe (11) via a gas path (13), and a solenoid valve (300) is provided on the gas path (13); The solenoid valve 2 (200) is located between the interface of the water outlet of the water pump (7) connected to the pipe 2 (20) and the washbasin (3); the solenoid valve 2 (200) and the solenoid valve 4 (400) are normally open when not powered, and the solenoid valve 1 (100) and the solenoid valve 3 (300) are normally closed when not powered; a throttle valve 1 (16) is also provided on the air path (13) between the solenoid valve 3 (300) and the blowpipe 1 (11); a throttle valve 2 (17) is provided between the solenoid valve 2 (200) and the washbasin (2); and a pressure sensor (14) is also provided, and the pressure sensor (14) is provided on the air path (13); The antifreeze method includes the following steps: S1. Turn on the water pump (7), solenoid valve 2 (200) and solenoid valve 4 (400), and the water booster (4) is filled with water; S2. Open solenoid valve 1 (100), turn off the water pump (7), keep solenoid valve 2 (200) and solenoid valve 4 (400) open, connect the air treatment unit (8) and the pneumatic water valve, switch the pneumatic water valve, connect the water booster (4) and pipe 1 (10) to complete the flushing of the toilet (2); S3. Close the solenoid valve 1 (100), close the solenoid valve 2 (200), keep the solenoid valve 4 (400) open, reset the pneumatic water valve, block the water booster (4) and the pipe 1 (1), connect the water booster (4) and the pipe 2 (200) to complete the washing; S4. Open solenoid valve 1 (100), solenoid valve 3 (300), and close solenoid valve 4 (400), connecting the air treatment unit (8) and the pneumatic water valve, the pneumatic water valve is switched, and the air flow in the air treatment unit (8) passes through the blowpipe 1 (11) to blow out the residual water in the toilet (2) and the pipe 1 (10), thereby completing the cleaning of the residual water in the toilet (2); S5. The solenoid valve 1 (100) is closed, the pneumatic water valve is reset, the water booster (4) and the pipe 1 (1) are blocked, and the air flow in the air treatment unit (8) passes through the blowpipe 1 (11) to blow out the residual water in the pipe 2 (20) and the washbasin (3), thereby completing the cleaning of the residual water in the washbasin (3); S6. When it is necessary to empty the water tank (1), the water pump (7) and the electromagnetic valve 2 (200) are turned on, the pipe 3 (30), the water pump (7) and the pipe 4 (40) are connected, and the water tank (1) is evacuated and discharged from the pipe 3 (30) to the pipe 4 (40); the electromagnetic valve 3 (300) is turned on, and the air in the air treatment unit (8) flows through the blowpipe 1 (11) to blow the residual water in the pipe 2 (20) and the pipe 4 (40) out of the overflow pipe (6); and steps S2 to S5 are repeated again.

2. The antifreeze method for the antifreeze pipeline structure of a locomotive toilet according to claim 1, characterized in that: A heater (15) is provided inside the water tank (1).

3. The antifreeze method for the antifreeze pipeline structure of a locomotive toilet according to claim 2, characterized in that: The locomotive toilet antifreeze pipeline structure also includes a second blow pipe (20), the second blow pipe (20) is connected from the air processing unit (8) and is connected through the air path (13) to the water inlet end of the water pump (7), and a one-way valve (9) is provided on the second blow pipe (12).

4. An antifreeze method based on the antifreeze pipeline structure of the locomotive toilet according to claim 3, characterized in that: The following steps are involved: S1. Turn on the water pump (7), solenoid valve 2 (200) and solenoid valve 4 (400), and the water booster (4) is filled with water; S2. Open solenoid valve 1 (100), turn off the water pump (7), keep solenoid valve 2 (200) and solenoid valve 4 (400) open, connect the air treatment unit (8) and the pneumatic water valve, switch the pneumatic water valve, connect the water booster (4) and pipe 1 (10) to complete the flushing of the toilet (2); S3. Close the solenoid valve 1 (100), close the solenoid valve 2 (200), keep the solenoid valve 4 (400) open, reset the pneumatic water valve, block the water booster (4) and the pipe 1 (1), connect the water booster (4) and the pipe 2 (200) to complete the washing; S4. Open solenoid valve 1 (100), solenoid valve 3 (300), and close solenoid valve 4 (400), so as to connect the air treatment unit (8) and the pneumatic water valve, and the pneumatic water valve is switched, so that the air flow in the air treatment unit (8) passes through blowpipe 1 (11) to blow out the residual water in the toilet (2) and pipe 1 (10), thereby completing the cleaning of the residual water in the toilet (2); blowpipe 2 (12) to blow out the residual water in the water pump (7) and pipe 4 (40); S5. The electromagnetic valve 1 (100) is closed, the pneumatic water valve is reset, the water booster (4) and the pipe 1 (1) are blocked, and the air flow in the air treatment unit (8) passes through the blowpipe 1 (11) to blow out the residual water in the pipe 2 (20) and the washbasin (3), thereby completing the cleaning of the residual water in the washbasin (3); S6. When it is necessary to empty the water tank (1), turn on the water pump (7) and the second solenoid valve (200), connect the pipe (30), the water pump (7) and the pipe (40), evacuate the water tank (1) and discharge the water through the pipe (30) to the pipe (40); and repeat steps S2 to S5 to blow out the water in the pipe.

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