Cleaning equipment with self-cleaning function

Abstract

The cleaning equipment with the self-cleaning function comprises a main machine and a base, the main machine is detachably installed on the base, and the main machine comprises a middle frame, a clear water tank, a sewage tank, a pipeline assembly, a base and an electric control assembly; the middle frame is installed on the base, the clean water tank and the sewage tank are installed in the middle frame, one end of the pipeline assembly is connected with the clean water tank and the sewage tank, the electric control assembly is installed in the middle frame and arranged between the pipeline assembly and the clean water tank and between the pipeline assembly and the sewage tank, and a discharge valve is installed at the bottom of the sewage tank; the connector of the sewage discharge pipe is used for abutting against a valve element of the discharge valve and ejecting the discharge valve open. The main machine is placed on the base, the blow-off pipe can automatically eject the discharge valve at the bottom of the sewage tank, actions such as blow-off can be automatically completed, the full-automatic cleaning function of the whole machine is achieved, main electric appliance elements used in the whole self-cleaning process are all carried in the main machine, and cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of fabric cleaning machine technology, specifically to a cleaning device with self-cleaning function. Background Technology

[0002] A fabric cleaning machine is a convenient cleaning device mainly used to clean fabric products that are inconvenient to machine wash, such as sofas, carpets, mattresses, and curtains. Its working principle involves mixing water and detergent, then using a water pump to spray the mixture onto the soiled areas. A brush head then repeatedly scrubs the softened stains, and finally, a powerful suction force draws the stains and moisture from the fabric into a wastewater tank. This completes the cleaning process. A typical fabric cleaning machine generally consists of a fan, water pump, wastewater tank, brush head, suction nozzle, and control circuitry.

[0003] Fabric cleaning machines typically have a clean water tank and a wastewater tank to store cleaning solution and recycled wastewater. After use, the wastewater in the wastewater tank and the remaining mixture in the clean water tank must be manually emptied, and the internal pipes must be cleaned, making the whole process rather cumbersome. If the user does not clean the recycled liquid in time, the entire machine will emit an odor after being left for a long time. Even after the above cleaning process, the sound-absorbing cotton and filter cotton inside the machine may become wet during use, and may also develop an odor after drying naturally, which greatly affects the user experience. Therefore, there is a need to develop a fabric cleaning device that is low-cost, easy to operate, and has an automatic cleaning function to fill the technological gap, meet user needs, and make it more efficient and convenient for users. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a cleaning device with a self-cleaning function.

[0005] The cleaning device with self-cleaning function provided by this utility model includes a main unit and a base. The main unit is detachably installed on the base. The main unit includes a middle frame, a clean water tank, a wastewater tank, a pipeline assembly, a base, and an electrical control assembly.

[0006] The middle frame is mounted on the base, the clean water tank and the wastewater tank are mounted side by side inside the middle frame, one end of the pipeline assembly is connected to the clean water tank and the wastewater tank respectively, and the other end of the pipeline assembly is used for cleaning external materials;

[0007] The electronic control component is installed inside the middle frame and is located between one end of the pipeline assembly and the clean water tank and the wastewater tank to provide suction and pressure;

[0008] A drain valve is installed at the bottom of the sewage tank, and a sewage discharge pipe is provided on the base. The connector of the sewage discharge pipe is located at the top of the base and corresponds to the drain valve. The connector of the sewage discharge pipe is used to abut against the valve core of the drain valve and open the drain valve.

[0009] Preferably, the valve core of the relief valve is disposed inside the valve body of the relief valve and is used to slide between a first position and a second position;

[0010] When the valve core is in the first position, the drain valve is closed. When the valve core is in the second position, the drain valve is open. The second position is higher than the first position. The connector of the sewage discharge pipe is used to abut against the valve core and push the valve core from the first position to the second position.

[0011] Preferably, the electronic control component includes a motor, an electromagnetic pump, a circuit board, and a switch, wherein the motor, electromagnetic pump, and switch are all electrically connected to the circuit board;

[0012] The motor is installed between the pipeline assembly and the sewage tank to generate suction and draw external sewage back into the sewage tank. The electromagnetic pump is installed between the pipeline assembly and the clean water tank to generate pressure and spray the liquid in the clean water tank out through the pipeline assembly.

[0013] Preferably, the middle frame includes an electrical control box located in the middle and water tank mounting slots located on both sides of the electrical control box. The sewage tank and the clean water tank are respectively placed in the water tank mounting slots on both sides, and the electrical control components are installed in the electrical control box.

[0014] Preferably, the piping assembly includes a clean water pipe, a sewage pipe, and a squeegee assembly;

[0015] The ends of the clean water pipe and the sewage pipe located inside the middle frame are respectively connected to the clean water tank and the sewage tank, and the ends of the clean water pipe and the sewage pipe located outside the middle frame are connected to the squeegee assembly.

[0016] Preferably, a drain valve is installed at the bottom of the clean water tank, and a clean water drain pipe corresponding to the drain valve at the bottom of the clean water tank is provided on the base;

[0017] The connector of the clean water drain pipe is located at the top of the base and is used to open the drain valve at the bottom of the clean water tank.

[0018] Preferably, the chassis is provided with a through hole, which corresponds to the drain valve and the sewage pipe, so that the drain valve and the sewage pipe can pass through and connect.

[0019] Preferably, the base includes a main support, a shock-absorbing ring, a recycling tank, and a one-way valve plate;

[0020] The shock-absorbing ring is installed on the top of the main support and corresponds to the base. The joints of the sewage discharge pipe and the clean water discharge pipe are both located on the top of the main support, and the recycling tank is installed at the bottom of the clean water discharge pipe.

[0021] The sewage discharge pipe is connected to an external pipeline, and the one-way valve plate is installed inside the sewage discharge pipe.

[0022] Preferably, the sewage tank includes a tank body and a drain valve installed at the bottom of the tank body, the drain valve including a valve core, a spring and a valve body;

[0023] The spring is installed in the valve body, with one end of the spring abutting against the bottom of the housing and the other end of the spring abutting against the boss in the middle of the valve core.

[0024] Preferably, the relief valve further includes a first sealing ring, a sealing gasket, and a second sealing ring;

[0025] The first sealing ring is installed outside the valve core. When the valve is closed, the first sealing ring is located between the valve core and the valve body. The second sealing ring is located outside the valve body and between the valve body and the sewage discharge pipe.

[0026] The bottom of the housing protrudes downward to form a connection part that connects with the valve body. The sealing gasket is installed inside the valve body and is located between the inner wall of the valve body and the bottom end of the connection part.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] This utility model has a simple structure and is easy to operate. By placing the main unit on the base, the sewage pipe will automatically open the drain valve at the bottom of the sewage tank, which can automatically complete the sewage discharge and other actions, realizing the fully automatic cleaning function of the whole machine. Moreover, the main electrical components used in the entire self-cleaning process are all built into the main unit and do not require additional configuration. Compared with the existing technology that achieves the same function, it reduces a whole set of electrical components, which greatly reduces the cost. Attached Figure Description

[0029] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0031] Figure 2 This is an exploded view of the present invention;

[0032] Figure 3 This is a half-sectional schematic diagram of the present invention;

[0033] Figure 4This is an exploded view of the base in this utility model;

[0034] Figure 5 This is an explosion diagram of the sewage tank in this utility model;

[0035] Figure 6 This is a half-sectional schematic diagram of the sewage tank in this utility model;

[0036] Figure 7 This is a schematic diagram illustrating the principle of the relief valve opening in this utility model.

[0037] The diagram shows:

[0038] Mid-frame 1 Piping assembly 4

[0039] Clean water tank 2, base 5

[0040] Sewage tank 3 Main support 501

[0041] Box 301, Sewage discharge pipe 50101

[0042] Spring 302, Hook 50102

[0043] Valve core 303, shock absorber ring 502

[0044] First sealing ring 304, recovery tank 503

[0045] Gasket 305, Check Valve Plate 504

[0046] Valve body 306, base 6

[0047] Second sealing ring 307, electronic control assembly 7 Detailed Implementation

[0048] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0049] This utility model discloses a cleaning device with a self-cleaning function. It designs a fabric cleaning machine with a separate main unit and base, which can realize the self-cleaning function of the whole machine, including automatic sewage discharge, self-suction cleaning and pipeline drying. The whole process is highly efficient and fully automatic. It can also reuse the remaining liquid in the clean water tank, saving water resources, and eliminating the manual cleaning process, thus improving the convenience of user operation.

[0050] The cleaning device with self-cleaning function provided by this utility model, such as Figure 1-7As shown, the device includes a main unit and a base 5. The main unit is detachably mounted on the base 5. The main unit includes a middle frame 1, a clean water tank 2, a wastewater tank 3, a piping assembly 4, a base 6, and an electrical control assembly 7. The middle frame 1 is mounted on the base 6. The clean water tank 2 and the wastewater tank 3 are mounted side by side inside the middle frame 1. One end of the piping assembly 4 is connected to the clean water tank 2 and the wastewater tank 3 respectively, and the other end of the piping assembly 4 is used for cleaning external materials. The electrical control assembly 7 is mounted inside the middle frame 1 and is located between one end of the piping assembly 4 and the clean water tank 2 and the wastewater tank 3, and is used to provide suction and pressure.

[0051] A drain valve is installed at the bottom of the sewage tank 3, and a sewage discharge pipe 50101 is provided on the base 5. The connector of the sewage discharge pipe 50101 is located at the top of the base 5 and corresponds to the drain valve. The connector of the sewage discharge pipe 50101 is used to abut against the valve core 303 of the drain valve and open the drain valve. Specifically, the valve core 303 of the drain valve is located inside the valve body 306 of the drain valve and is used to slide between a first position and a second position. When the valve core 303 is in the first position, the drain valve is closed. When the valve core 303 is in the second position, the drain valve is open. The second position is higher than the first position. The connector of the sewage discharge pipe 50101 is used to abut against the valve core 303 and push the valve core 303 from the first position to the second position. When cleaning is required, the main unit is separated from the base. When self-cleaning is required, the main unit is installed on the base 5, and the drain valve at the bottom of the sewage tank 3 is automatically opened by the sewage discharge pipe 50101 to perform self-cleaning.

[0052] The electrical control component 7 includes a motor, an electromagnetic pump, a circuit board, and a switch. The motor, electromagnetic pump, and switch are all electrically connected to the circuit board. The motor is located between the pipeline component 4 and the sewage tank 3 to generate suction and draw external sewage back into the sewage tank 3. The electromagnetic pump is located between the pipeline component 4 and the clean water tank 2 to generate pressure and spray the liquid in the clean water tank 2 out through the pipeline component 4.

[0053] like Figure 2 As shown, the middle frame 1 includes an electrical control box located in the middle and water tank mounting slots located on both sides of the electrical control box. The sewage tank 3 and the clean water tank 2 are respectively placed in the water tank mounting slots on both sides, and the electrical control assembly 7 is installed inside the electrical control box. The pipeline assembly 4 includes a clean water pipe, a sewage pipe, and a squeegee assembly; the ends of the clean water pipe and the sewage pipe located inside the middle frame 1 are respectively connected to the clean water tank 2 and the sewage tank 3, and the ends of the clean water pipe and the sewage pipe located outside the middle frame 1 are connected to the squeegee assembly.

[0054] In a preferred embodiment, a drain valve is installed at the bottom of the clean water tank 2, and a clean water drain pipe corresponding to the drain valve at the bottom of the clean water tank 2 is provided on the base 5; the connector of the clean water drain pipe is located at the top of the base 5, used to open the drain valve at the bottom of the clean water tank 2. By adding a drain valve at the bottom of the clean water tank, corresponding to the clean water drain pipe of the base, the remaining liquid in the clean water tank can also be discharged; a through hole is provided on the chassis 6, the through hole corresponding to the drain valve and the drain pipe 50101, used to allow the drain valve and the sewage drain pipe 50101 to pass through and connect.

[0055] like Figure 4 As shown, the base 5 includes a main support 501, a shock-absorbing ring 502, a recycling tank 503, and a one-way valve plate 504; the shock-absorbing ring 502 is installed on the top of the main support 501 and corresponds to the base 6; the joints of the sewage discharge pipe 50101 and the clean water discharge pipe are both located on the top of the main support 501; the recycling tank 503 is installed at the bottom of the clean water discharge pipe; the sewage discharge pipe 50101 is connected to an external pipeline; and the one-way valve plate 504 is installed inside the sewage discharge pipe 50101.

[0056] like Figure 5 As shown, the sewage tank 3 includes a tank body 301 and a drain valve installed at the bottom of the tank body 301. The drain valve includes a valve core 303, a spring 302 and a valve body 306. The spring 302 is installed in the valve body 306. One end of the spring 302 abuts against the bottom of the tank body 301, and the other end of the spring 302 abuts against the boss in the middle of the valve core 303. The drain valve further includes a first sealing ring 304, a sealing gasket 305, and a second sealing ring 307. The first sealing ring 304 is installed outside the valve core 303. When the valve is closed, the first sealing ring 304 is located between the valve core 303 and the valve body 306. The second sealing ring 307 is located outside the valve body 306 and between the valve body 306 and the sewage discharge pipe 50101. The bottom of the housing 301 protrudes downward to form a connecting part that connects with the valve body 306. The sealing gasket 305 is installed inside the valve body 306 and is located between the inner wall of the valve body 306 and the bottom end of the connecting part.

[0057] Example 1

[0058] This embodiment discloses a cleaning device with self-cleaning function and its operation method. The cleaning device includes a main unit and a base 5. The main unit can be placed on the base 5 and can be removed and used separately. After use, it can be placed on the base 5 to activate the self-cleaning mode. The main unit includes a middle frame 1, a clean water tank 2, a wastewater tank 3, a pipeline assembly 4, an electrical control assembly 7, etc. The base 5 includes a main support 501, a shock absorption ring 502, and a recycling tank 503, etc.

[0059] The base 6 is equipped with casters for easy movement of the main unit. The middle frame 1 is mounted on top of the base 6 and contains the electrical control components 7, which include a motor, electromagnetic pump, circuit board, and switches. The motor provides vacuum to generate suction and draw the wastewater mixture back into the wastewater tank 3. The water pump provides pressure to spray the liquid in the clean water tank 2 onto the fabric surface through a squeegee. The clean water tank 2 is placed on the right side of the middle frame 1, and the wastewater tank 3 is placed on the left side of the middle frame 1. Both tanks can be separated from the middle frame 1 and removed. Both tanks are equipped with drain valves at the bottom, which can be connected to the drain pipe on the base 5 for wastewater discharge. The pipeline assembly 4 consists of a clean water pipe, a wastewater pipe, and a squeegee assembly, used for clean water spraying and wastewater recovery in the pipeline. The base 6 has through holes corresponding to the drain valve positions, allowing the drain valve and the drain hole of the base 6 to pass through and connect.

[0060] The drain valve at the bottom of the water tank includes a spring 302, a valve core 303, a first sealing ring 304, a second sealing ring 307, a sealing gasket 305, and a valve body 306. The first sealing ring 304 is installed on the valve core 303 to ensure a seal between the valve core 303 and the valve body 306 when the valve is closed. The second sealing ring 307 is installed on the valve body 306 to ensure a seal between the drain valve and the drain pipe when the main unit is placed on the base 5. The spring 302, valve core 303, and sealing gasket 305 are installed on the valve body 306. Inside body 306, it is fixed to the water tank, forming a drain valve. When the main unit and base 5 are separated, the gravity of the water and the spring force will close the drain valves at the bottom of the two water tanks, preventing the liquid in the tanks from flowing out, and the main unit can be used as a regular cleaning device. When the main unit is placed on base 5, the drain pipe on the base will open the drain valve, and the liquid inside the water tank will be discharged. The drain valve core 303 and the corresponding drain hole on base 5 both adopt a cross structure, resulting in a larger drainage cross-sectional area. For details, please refer to [reference needed]. Figure 7 Schematic diagram of automatic valve opening;

[0061] The base 5 includes a main support 501, a shock-absorbing ring 502, a one-way valve plate 504, and a recovery tank 503. The main support 501 further includes a sewage discharge pipe 50101 and a hook 50102. The sewage discharge pipe 50101 can be connected to a sewer system via a pipe at its bottom. The shock-absorbing ring 502 can be fitted onto the main support 501 and contacts the main unit chassis 6 to reduce the vibration and noise of the main unit during self-cleaning. The recovery tank 503 is placed below the clean water discharge pipe of the main support 501 and is used to recover the remaining water in the clean water tank 2. The hook 50102 is used to place the squeegee, which can be fixed in the recycling tank 503. During the self-cleaning process, the squeegee will suck the liquid in the recycling tank 503 into the sewage tank 3 to clean the pipeline and the sewage tank 3. The one-way valve plate 504 is fixed inside the sewage discharge pipe 50101, which enables the sewage to flow downward when the main unit is placed on the base 5. When the next self-cleaning and drying is carried out, the valve plate will close due to the negative pressure inside the sewage tank 3, and the sewage discharge pipe will be blocked to prevent the intake of exhaust gas from the sewer.

[0062] The self-cleaning operation logic of the entire machine is as follows:

[0063] After completing the work, the main unit is placed on base 5 → the drain valve of the clean water tank is opened on the top of the base drain pipe to discharge the sewage from the sewage tank to the sewer and the remaining liquid in the clean water tank to the recycling tank → press the self-cleaning button (or automatic sensor switch), and the whole machine will start after a 3-minute delay → the liquid in the recycling tank is sucked back by the squeegee to clean the pipeline and sewage tank → the machine is stopped and the sewage tank is drained a second time → after the drainage is completed, the machine is turned on again to run the exhaust fan to dry the entire pipeline and complete the cleaning.

[0064] The self-cleaning process requires the control of various electrical components via a circuit board to complete the working logic, including delayed start-up, intermittent shutdown, and secondary startup. The specific interval time for each stage can be set according to the actual situation of the model to ensure that the maximum amount of self-cleaning work can be completed in one go.

[0065] In a preferred embodiment, a recycling tank 503 can be placed below the clean water drain pipe, and the remaining liquid in the clean water tank will be recycled into the recycling tank. A hook is added to the side of the base to fix a suction auger, with the auger head inside the recycling tank. When self-cleaning the pipeline, the remaining liquid in the clean water tank can be used, saving water resources. The drain valve core 303 of the wastewater tank 3 can be made of magnetic material. When the main unit is placed on the base 5, the valve core 303 will be lifted up. A Hall effect switch is added at the corresponding position in the middle frame. After receiving the signal, the control circuit will automatically activate the self-cleaning mode, eliminating the need for manual pressing of the cleaning switch. Furthermore, the mechanical valves of the clean and wastewater tanks can be replaced with electromagnetic valves, which can also achieve the functions described in the above embodiments.

[0066] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0067] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A cleaning device with a self-cleaning function, characterized in that, Includes a main unit and a base (5), the main unit is detachably mounted on the base (5), the main unit includes a middle frame (1), a clean water tank (2), a sewage tank (3), a pipeline assembly (4), a base (6) and an electrical control assembly (7); The middle frame (1) is installed on the base (6), the clean water tank (2) and the sewage tank (3) are installed side by side inside the middle frame (1), one end of the pipeline assembly (4) is connected to the clean water tank (2) and the sewage tank (3) respectively, and the other end of the pipeline assembly (4) is used to clean external materials; The electronic control component (7) is installed inside the middle frame (1) and is located between one end of the pipeline component (4) and the clean water tank (2) and the sewage tank (3) to provide suction and pressure; A drain valve is installed at the bottom of the sewage tank (3), and a sewage discharge pipe (50101) is provided on the base (5). The connector of the sewage discharge pipe (50101) is located at the top of the base (5) and corresponds to the drain valve. The connector of the sewage discharge pipe (50101) is used to abut against the valve core (303) of the drain valve and open the drain valve.

2. The cleaning device with self-cleaning function according to claim 1, characterized in that, The valve core (303) of the relief valve is disposed inside the valve body (306) of the relief valve and is used to slide between a first position and a second position; When the valve core (303) is in the first position, the drain valve is closed. When the valve core (303) is in the second position, the drain valve is open. The second position is higher than the first position. The connector of the sewage discharge pipe (50101) is used to abut against the valve core (303) and push the valve core (303) from the first position to the second position.

3. The cleaning device with self-cleaning function according to claim 1, characterized in that, The electronic control component (7) includes a motor, an electromagnetic pump, a circuit board, and a switch, all of which are electrically connected to the circuit board. The motor is located between the pipeline assembly (4) and the sewage tank (3) to generate suction and draw external sewage back into the sewage tank (3). The electromagnetic pump is located between the pipeline assembly (4) and the clean water tank (2) to generate pressure and spray the liquid in the clean water tank (2) through the pipeline assembly (4).

4. The cleaning device with self-cleaning function according to claim 1, characterized in that, The middle frame (1) includes an electrical control box located in the middle and water tank mounting slots located on both sides of the electrical control box. The sewage tank (3) and the clean water tank (2) are respectively placed in the water tank mounting slots on both sides. The electrical control component (7) is installed in the electrical control box.

5. The cleaning device with self-cleaning function according to claim 1, characterized in that, The pipeline assembly (4) includes a clean water pipe, a sewage pipe, and a squeegee assembly; The ends of the clean water pipe and the sewage pipe located inside the middle frame (1) are respectively connected to the clean water tank (2) and the sewage tank (3), and the ends of the clean water pipe and the sewage pipe located outside the middle frame (1) are connected to the water tap assembly.

6. The cleaning device with self-cleaning function according to claim 1, characterized in that, A drain valve is installed at the bottom of the clean water tank (2), and a clean water drain pipe corresponding to the drain valve at the bottom of the clean water tank (2) is provided on the base (5); The connector of the clean water drain pipe is located at the top of the base (5) and is used to open the drain valve at the bottom of the clean water tank (2).

7. The cleaning device with self-cleaning function according to claim 1, characterized in that, The base (6) is provided with a through hole, which corresponds to the drain valve and the sewage pipe (50101) and is used to allow the drain valve and the sewage pipe (50101) to pass through and connect.

8. The cleaning device with self-cleaning function according to claim 1, characterized in that, The base (5) includes a main support (501), a shock absorber (502), a recycling tank (503), and a one-way valve plate (504); The shock-absorbing ring (502) is installed on the top of the main support (501) and corresponds to the base (6). The joints of the sewage discharge pipe (50101) and the clean water discharge pipe are both set on the top of the main support (501). The recycling tank (503) is installed at the bottom of the clean water discharge pipe. The sewage discharge pipe (50101) is connected to an external pipeline, and the one-way valve plate (504) is installed inside the sewage discharge pipe (50101).

9. The cleaning device with self-cleaning function according to claim 1, characterized in that, The sewage tank (3) includes a tank body (301) and a drain valve installed at the bottom of the tank body (301). The drain valve includes a valve core (303), a spring (302) and a valve body (306). The spring (302) is installed in the valve body (306), with one end of the spring (302) abutting the bottom of the housing (301) and the other end of the spring (302) abutting the boss in the middle of the valve core (303).

10. The cleaning device with self-cleaning function according to claim 9, characterized in that, The relief valve also includes a first sealing ring (304), a sealing gasket (305), and a second sealing ring (307); The first sealing ring (304) is installed outside the valve core (303). When the valve is closed, the first sealing ring (304) is located between the valve core (303) and the valve body (306). The second sealing ring (307) is located outside the valve body (306) and between the valve body (306) and the sewage discharge pipe (50101). The bottom of the housing (301) protrudes downward to form a connection part that connects with the valve body (306). The sealing gasket (305) is installed inside the valve body (306) and is located between the inner wall of the valve body (306) and the bottom end of the connection part.

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