A cleaning machine

Abstract

This invention relates to a cleaning machine, comprising a first water tank with a drain outlet and a cleaning inner tank with a water outlet, a drain pipe connected to the drain outlet, and a drain assembly for opening and closing the drain outlet. The drain pipe has a water inlet with a water connector, the water connector having a first interface for fluid communication with the water outlet and a second interface for fluid communication with the overflow outlet of the first water tank. The machine further includes: a sealing member for sealing the first interface; a pressing member disposed on the drain assembly; a transmission mechanism for actuating the sealing member, and including a vertically extending first elastic member; and a second elastic member disposed below the drain assembly for supporting the drain assembly. Compared with the prior art, this invention can prevent the cleaning inner tank from being contaminated by backflow or foaming, ensuring the safety of the cleaning inner tank and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of household appliances, and more particularly to a cleaning machine. Background Technology

[0002] A sink is an indispensable part of a family kitchen, where people typically wash food and kitchen utensils. Sinks are equipped with overflow outlets so that when the water level exceeds a set maximum, water flows into the drain pipe through the overflow outlet. For example, the Chinese utility model patent "Integrated Sink Overflow Outlet Structure" with patent number ZL 202322981126.9 (authorization announcement number CN220928081U) illustrates this.

[0003] Furthermore, modern kitchens typically feature double sinks, one for daily washing and the other for a sink cleaning machine. Examples include Chinese invention patent application number CN202410736234.6 (publication number CN118633878A) entitled "A Sink and a Cleaning Machine Using the Sink," and Chinese utility model patent ZL202322640856.2 (authorization announcement number CN220898637U) entitled "An Integrated Sink Dishwasher and Garbage Disposal Machine." A drain pipe is connected to the drain outlet of the washing sink, and the washing water from the functional sink flows into the drain pipe through the interface. If backflow or backflow occurs at the interface, and the washing sink is drained directly, the backflow or backflow will enter the inner tank of the washing machine under water pressure, affecting the drying effect of the items in the functional tank and potentially contaminating the functional tank. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a cleaning machine that avoids the inner tank from being contaminated by backflow or water.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problem is as follows: a cleaning machine, comprising a first water tank with a drain outlet and a cleaning inner tank with a water outlet, further comprising a drain pipe connected to the drain outlet and a drain device for opening and closing the drain outlet, wherein the drain pipe has a water inlet, the water inlet is provided with a water connector, and the water connector has a first interface for fluid communication with the water outlet and a second interface for fluid communication with the overflow outlet of the first water tank, characterized in that it further comprises:

[0006] A sealing element for sealing the aforementioned first interface;

[0007] A push-button element is installed on the aforementioned drain assembly;

[0008] A transmission mechanism for actuating the aforementioned sealing element, and including a vertically extending first elastic element;

[0009] The second elastic element is disposed below the aforementioned drain assembly and is used to support the drain assembly.

[0010] In the initial state, the drain device is installed in the drain outlet and the drain outlet is closed, while the second elastic element accumulates potential energy and the first interface is opened.

[0011] Pressing the pressing component causes the sealing component to close the first interface via a transmission mechanism. Simultaneously, the first elastic component accumulates potential energy. Removing the pressing force from the pressing component causes the first elastic component to release its potential energy, which in turn causes the pressing component to reset and the sealing component to be subjected to a force in the direction of sealing the first interface. When the pressing component is reset to its original position, it abuts against the limiting structure on the drain assembly and moves the drain assembly upward. The second elastic component releases its potential energy, causing the drain assembly to move upward and disengage from the drain outlet. The drain outlet opens, and the water in the first water tank flows into the drain pipe through the drain outlet. The water pressure acts on the transmission mechanism, causing the sealing component to be continuously subjected to a force in the direction of sealing the first interface.

[0012] Furthermore, the pressing element is a vertically inserted rod in the drain assembly, and the transmission mechanism includes a transmission rod arranged along the length of the water inlet, wherein a hinge seat is provided in the water inlet, and the middle part of the transmission rod is connected to the hinge seat.

[0013] The aforementioned seal is installed at the first end of the transmission rod, and the aforementioned first interface is located above the seal. The aforementioned first elastic element is a vertically extending compression spring, and the upper end of the first elastic element is connected to the lower end of the aforementioned pressing element, while the lower end of the first elastic element is connected to the second end of the aforementioned transmission rod exposed in the aforementioned drain pipe. When the aforementioned pressing element is pressed down, the pressing element moves vertically downward, the first elastic element is compressed and accumulates potential energy, and the second end of the transmission element rotates downward, causing its first end to rotate upward, pushing the seal into the first interface and closing the first interface.

[0014] Furthermore, the sealing element is a spherical cap-shaped block whose size matches the first interface. The curved surface of the sealing element faces the first interface, and the bottom surface is connected to the first end of the transmission rod via a return spring. This allows the sealing element to better seal the first interface, thereby better preventing backflow of foam or water into the first interface.

[0015] In the initial state, the following formula is satisfied: K×△X×L2≤G×L1, where K is the elastic coefficient of the first elastic element, △X is the compression of the first elastic element, L1 is the lever arm of the first end of the transmission rod, L2 is the lever arm of the second end of the transmission rod, and F is the weight of the sealing element. Furthermore, the return spring is in a compressed state, causing the sealing element to tend to move towards the first interface. This ensures that the first interface is reliably kept open, and also facilitates closing the first interface via the sealing element when needed (when the first water tank drains and there is backflow or backflow at the first interface).

[0016] When the aforementioned seal is engaged with the first interface and the first interface is closed while the drain outlet is open, the following formula is satisfied: K×△X×L2>G×L1. The aforementioned return spring is in a stretched state, causing the seal to tend to disengage from the first interface and open the first interface. This ensures that the first interface is reliably kept in the open state, and also facilitates the disengagement of the seal from the first interface to open it.

[0017] Furthermore, the upper end of the drain pipe extends vertically and its upper port is connected to the aforementioned drain outlet. The aforementioned water inlet is located on the pipe wall at the upper end of the drain pipe. The aforementioned water connector extends upward and outward relative to the upper end of the drain pipe, and the angle formed between the two is an acute angle. The aforementioned first interface is located at the middle of the water connector along its own length direction, while the free end of the water connector is the aforementioned second interface.

[0018] In the initial state, the first end of the aforementioned transmission rod abuts against the lower end of the water inlet pipe wall. When the first interface is closed and the drain is open, the second end of the aforementioned transmission rod abuts against the lower end of the water inlet rim. This design allows the overflow water from the first water tank and the washing water used to clean the inner tank to smoothly flow into the drain pipe. It also ensures the transmission rod is securely positioned in the water inlet and better transmits force to the seal. Furthermore, when the drain is opened, the water pressure acts more effectively on the second end of the transmission rod, thus ensuring the first interface remains reliably closed when the first water tank is draining.

[0019] Furthermore, the hinge seat is located adjacent to the aforementioned seal. This allows the seal to more sensitively sense changes in the force (downward pressure of the pressing element or water pressure) at the second end of the transmission rod, thereby better controlling the opening and closing of the first interface.

[0020] Furthermore, it also includes a first sensor for collecting image information or water pressure information at the aforementioned first interface. The information collected by the first sensor is used to determine whether there is backflow or bubbling at the first interface, thereby determining whether to shut down the first interface.

[0021] Furthermore, the first sensor is either a visual sensor or a Hall sensor. A visual sensor can acquire image information at the first interface, while a Hall sensor can acquire water pressure information at the first interface.

[0022] Furthermore, the second elastic element is a vertically extending spring. Its upper end is connected to the bottom of the drain assembly, while its lower end is connected to the bottom wall of the casing that covers the drain outlet and is located within the drain pipe. This allows the drain assembly to better detach from the drain outlet under the action of the second elastic element, ensuring smooth opening of the drain outlet, while also achieving a secure installation of the second elastic element.

[0023] Furthermore, it also includes a vertically extending guide tube, which is a corrugated tube that can extend and retract vertically. The second elastic element is spirally embedded in the wall of the guide tube along its length, and the pressing element passes through the guide tube. This allows the second elastic element to deform more effectively under the guidance of the guide tube, thereby enabling the drain to open and close the drain outlet more efficiently. In addition, the guide tube also guides the vertical movement of the pressing element.

[0024] Furthermore, the drain assembly has a circular cross-section, and both the guide tube and the pressing element extend along the central axis of the drain assembly. This allows the elastic force of the second elastic element to act evenly on the drain assembly, ensuring smooth operation of the drain assembly and thus ensuring the reliability of the drain outlet opening and closing control. In addition, it also allows the pressing element to move smoothly up and down, ensuring smooth operation of the sealing element and thus ensuring the reliability of the first interface opening and closing control.

[0025] Compared with the prior art, the advantages of this invention are: it includes a sealing element, a pressing element, a transmission mechanism, and a second elastic element. In the initial state, the drain is installed in the drain outlet, closing the outlet, and the second elastic element accumulates potential energy, while the first interface opens. This allows the user to store water in the first water tank, and the washing water in the inner tank can be smoothly discharged into the drain pipe through the first interface. When the first water tank drains and there is backflow or bubbling at the first interface, pressing the pressing component causes it to close the first interface via a transmission mechanism. Simultaneously, the first elastic element accumulates potential energy. Releasing the pressing force causes the first elastic element to release its potential energy, resetting the pressing component and applying a force to the seal towards the first interface. When the pressing component is fully reset, it abuts against the limiting structure on the drain assembly, causing it to move upwards and pull the drain assembly upwards. The second elastic element releases its potential energy, causing the drain assembly to move upwards and disengage from the drain outlet, opening the drain outlet. Water from the first water tank flows into the drain pipe through the drain outlet, and the water pressure acts on the transmission mechanism, continuously applying a force to the seal towards the first interface. This method of opening the drain outlet and closing the first interface prevents backflow or bubbling from the first interface into the connecting pipe between the outlet and the first interface, or directly into the cleaning tank, thus preventing contamination of the cleaning tank, ensuring its safety, and improving the user experience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the cleaning machine in an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of the cleaning machine in its initial state in an embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of the cleaning machine with the drain outlet open in an embodiment of the present invention;

[0029] Figure 4 for Figure 2 Enlarged view of section A;

[0030] Figure 5 for Figure 3 Enlarged view of section B. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0033] like Figures 1-5 As shown, a cleaning machine includes a first water tank 1 with a drain outlet 11 and a cleaning inner tank with a drain outlet 22. It also includes a drain pipe 3 connected to the drain outlet 11 and a drain device 4 for opening and closing the drain outlet 11. The drain pipe 3 has a water inlet 31 with a water connector 32. The water connector 32 has a first interface 321 for fluid communication with the drain outlet 22 and a second interface 322 for fluid communication with the overflow outlet (not shown) of the first water tank 1. In this embodiment, the cleaning inner tank is a second water tank 2 arranged side-by-side with the first water tank 1. The upper opening of the second water tank 2 is covered by a door 21, and the drain outlet 22 is located on the bottom wall of the second water tank 2.

[0034] Furthermore, it also includes a sealing element 5, a pressing element 6, a transmission mechanism 7, and a second elastic element 8. The sealing element 5 seals the first interface 321, and the pressing element 6 is disposed on the drain assembly 4. The transmission mechanism 7 is used to actuate the sealing element 5 and includes a vertically extending first elastic element 74. The second elastic element 8 is disposed below the drain assembly 4 and supports it. Initially, the drain assembly 4 is embedded in the drain outlet 11, closing the outlet 11, and the second elastic element 8 accumulates potential energy, while the first interface 321 is open. When the first water tank 1 drains water and there is backflow or backflow at the first interface 321, pressing the pressing element 6 causes the sealing element 5 to close the first interface 321 via the transmission mechanism 7, while the first elastic element 74 accumulates potential energy. Next, the pressing force applied to the pressing member 6 is released. The first elastic member 74 releases its potential energy, causing the pressing member 6 to reset and the sealing member 5 to be subjected to a force in the direction of sealing the first interface 321. When the pressing member 6 is reset to its position, it abuts against the limiting structure (not shown) on the drain 4 and drives the drain 4 upward. The second elastic member 8 releases its potential energy, causing the drain 4 to move upward and disengage from the drain outlet 11, opening the drain outlet 11. The water in the first water tank 1 flows into the drain pipe 3 through the drain outlet 11, and the water pressure acts on the transmission mechanism 7, causing the sealing member 5 to be continuously subjected to a force in the direction of sealing the first interface 321, thus ensuring that the first interface 321 remains closed.

[0035] As can be seen from the above, by opening the drain outlet 11 and closing the first interface 321, the present invention can prevent backflow or backflow of water from entering the connecting pipe between the outlet 22 and the first interface 321 or directly entering the cleaning tank under water pressure when the first water tank 1 drains, thus avoiding contamination of the cleaning tank, ensuring the safety of the cleaning tank, and improving the user experience.

[0036] In this embodiment, specifically, the pressing member 6 is a vertically inserted rod in the drain 4, and the transmission mechanism 7 includes a transmission rod 71, which is disposed in the water inlet 32 ​​along its length. A hinge seat 72 is provided in the water inlet 32, and the middle part of the transmission rod 71 is connected to the hinge seat 72. The sealing member 5 is installed at the first end of the transmission rod 71, and the first interface 321 is located above the sealing member 5. The first elastic member 74 is a vertically extending compression spring, and its upper end is connected to the lower end of the pressing member 6, while its lower end is connected to the second end of the transmission rod 71 exposed in the drain pipe 3. Pressing down the pressing member 6 causes it to move vertically downwards, compressing the first elastic member 74 and accumulating potential energy. The second end of the transmission member rotates downwards, causing its first end to rotate upwards. The sealing member 5 is pushed into the first interface 321, thus closing the first interface 321.

[0037] Furthermore, the aforementioned sealing element 5 is a spherical block (specifically hemispherical in this embodiment) that matches the size of the aforementioned first interface 321. The curved surface of the sealing element 5 faces the aforementioned first interface 321, and the bottom surface is connected to the first end of the aforementioned transmission rod 71 through the return spring 73. The junction between the first interface 321 and the water inlet connector 32 is rounded, thereby enabling the sealing element 5 to better seal the first interface 321, and thus better prevent backflow of foam or water into the first interface 321. Furthermore, in the initial state, the following formula is satisfied: K×△X×L2≤G×L1, where K is the elastic coefficient of the aforementioned first elastic element 74, △X is the compression amount of the first elastic element 74, L1 is the force arm of the first end of the aforementioned transmission rod 71, L2 is the force arm of the second end of the aforementioned transmission rod 71, F is the weight of the aforementioned sealing element 5, and the aforementioned return spring 73 is in a compressed state, causing the sealing element 5 to have a tendency to move towards the first interface 321. This design ensures that the first interface 321 remains reliably open, while also allowing the sealing element 5 to close the first interface 321 when needed (when the first water tank 1 drains and there is backflow or foaming at the first interface 321). When the sealing element 5 is engaged with the first interface 321, closing it, and the drain outlet 11 is open, the following formula is satisfied: K×△X×L2>G×L1. The return spring 73 is in a stretched state, causing the sealing element 5 to tend to disengage from the first interface 321 and open it. This ensures that the first interface 321 remains reliably open, while also allowing the sealing element 5 to disengage from the first interface 321 and open it.

[0038] Preferably, the upper end of the drain pipe 3 extends vertically and its upper port is connected to the drain outlet 11. The water inlet 31 is located on the pipe wall at the upper end of the drain pipe 3. The water connector 32 extends upward and outward relative to the upper end of the drain pipe 3, and the angle between the two is an acute angle (approximately 70° in this embodiment). The first interface 321 is located at the middle of the water connector 32 along its own length direction, and the free end of the water connector 32 is the second interface 322. In the initial state, the first end of the transmission rod 71 abuts against the lower end of the pipe wall of the water connector 32. When the first interface 321 is closed and the drain device 4 is open, the second end of the transmission rod 71 abuts against the lower end of the edge of the water inlet 31. On the one hand, it allows the overflow water from the first water tank 1 and the washing water for cleaning the inner tank to flow smoothly into the drain pipe 3. On the other hand, it allows the transmission rod 71 to be stably installed in the water inlet 32 ​​and to better transmit force to the seal 5. At the same time, when the drain outlet 11 is opened to drain, it allows the water flow and water pressure to act better on the second end of the transmission rod 71, so that the first interface 321 can be reliably kept in the closed state when the first water tank 1 is draining.

[0039] Preferably, the hinge seat 72 is adjacent to the seal 5, so that the seal 5 can more sensitively sense the force (downward pressure of the pressing member 6 or water pressure) change at the second end of the transmission rod 71, thereby better controlling the opening and closing of the first interface 321.

[0040] Furthermore, it also includes a first sensor 9 for collecting image information or water pressure information at the first interface 321. The information collected by the first sensor 9 is used to determine whether there is backflow or bubbling at the first interface 321, thereby determining whether to close the first interface 321. Preferably, the first sensor 9 is a visual sensor or a Hall sensor. A visual sensor can collect image information at the first interface 321, while a Hall sensor can collect water pressure information at the first interface 321. In this embodiment, the first sensor 9 is installed at the connection between the first interface 321 and the water inlet connector 32 (e.g., ...). Figure 4 and Figure 5 (As shown).

[0041] Furthermore, the second elastic element 8 is a vertically extending spring. Its upper end is connected to the bottom of the drain assembly 4, and its lower end is connected to the bottom wall of the cover 12, which is mounted on the drain outlet 11 and located within the drain pipe 3. This allows the drain assembly 4 to better detach from the drain outlet 11 under the action of the second elastic element 8, ensuring smooth opening of the drain outlet 11, and simultaneously achieving a stable installation of the second elastic element 8. Preferably, it also includes a vertically extending guide tube 81, which is a corrugated tube that can extend and retract vertically. The second elastic element 8 is spirally embedded in the wall of the guide tube 81 along its length, and the pressing element 6 passes through the guide tube 81. This allows the second elastic element 8 to deform better under the guidance of the guide tube 81, thereby enabling the drain assembly 4 to better open and close the drain outlet 11. In addition, the guide tube 81 also guides the vertical movement of the pressing element 6. More preferably, the drain assembly 4 has a circular cross-section, and both the guide tube 81 and the pressing member 6 extend along the central axis of the drain assembly 4. This allows the elastic force of the second elastic member 8 to act evenly on the drain assembly 4, ensuring the smooth operation of the drain assembly 4 and thus ensuring the reliability of the opening and closing control of the drain outlet 11. In addition, it also allows the pressing member 6 to move smoothly up and down, ensuring the smooth operation of the sealing member 5 and thus ensuring the reliability of the opening and closing control of the first interface 321.

[0042] In this embodiment, a channel (not shown) is provided vertically through the center of the drain 4 for the pressing member 6 to pass through. The cross-section of the top of the pressing member 6 decreases from bottom to top, while the top of the channel narrows from bottom to top. Thus, when the pressing member 6 is in its upward position, the top of the pressing member 6 abuts against the top of the hole wall of the channel circumferentially, thereby achieving the upper limit of the pressing member 6.

[0043] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber that allows fluid to flow through, or a combination of the above.

Claims

1. A cleaning machine comprising a first water tank (1) having a drain outlet (11) and a cleaning inner tank having a drain outlet (22), further comprising a drain pipe (3) connected to the drain outlet (11) and a drain device (4) for opening and closing the drain outlet (11), wherein, A water inlet (31) is provided on the drain pipe (3), and a water connector (32) is provided on the water inlet (31). The water connector (32) has a first interface (321) for fluid communication with the water outlet (22) and a second interface (322) for fluid communication with the overflow outlet of the first water tank (1). The feature is that it further includes: A sealing element (5) is used to seal the first interface (321) mentioned above; The pressing part (6) is installed on the drain (4) mentioned above; The transmission mechanism (7) is used to link the above-mentioned sealing element (5) and includes a vertically extending first elastic element (74); The second elastic element (8) is disposed below the drain assembly (4) and is used to support the drain assembly (4); In the initial state, the drain (4) is installed in the drain outlet (11) and the drain outlet (11) is closed, and the second elastic member (8) accumulates potential energy, while the first interface (321) is opened. Pressing the pressing member (6) causes the pressing member (6) to drive the sealing member (5) through the transmission mechanism (7) to close the first interface (321). At the same time, the first elastic member (74) accumulates potential energy. When the pressing force applied to the pressing member (6) is removed, the first elastic member (74) releases potential energy and drives the pressing member (6) to reset and causes the sealing member (5) to be subjected to a force in the direction of sealing the first interface (321). When the pressing member (6) is reset to the position, it abuts against the limiting structure on the drain (4) and drives the drain (4) upward. The second elastic member (8) releases potential energy and causes the drain (4) to move upward and disengage from the drain outlet (11). The drain outlet (11) opens, and the water in the first water tank (1) flows into the drain pipe (3) through the drain outlet (11). The water pressure acts on the transmission mechanism (7) and causes the sealing member (5) to be continuously subjected to a force in the direction of sealing the first interface (321).

2. The cleaning machine as described in claim 1, characterized in that, The pressing member (6) is a vertically inserted rod in the drain device (4). The transmission mechanism (7) includes a transmission rod (71), which is arranged in the water inlet (32) along the length of the water inlet (32). The water inlet (32) is provided with a hinge seat (72), and the middle part of the transmission rod (71) is connected to the hinge seat (72). The aforementioned seal (5) is installed at the first end of the transmission rod (71), and the aforementioned first interface (321) is located above the seal (5). The aforementioned first elastic element (74) is a vertically extending compression spring, and the upper end of the first elastic element (74) is connected to the lower end of the aforementioned pressing element (6), while the lower end of the first elastic element (74) is connected to the second end of the aforementioned transmission rod (71) exposed in the aforementioned drain pipe (3).

3. The cleaning machine as described in claim 2, characterized in that, The sealing element (5) is a spherical block that matches the size of the first interface (321). The curved surface of the sealing element (5) faces the first interface (321), and the bottom surface is connected to the first end of the transmission rod (71) via a return spring (73). In the initial state, the following formula is satisfied: K×△X×L2≤G×L1, where K is the elastic coefficient of the first elastic element (74), △X is the compression amount of the first elastic element (74), L1 is the force arm of the first end of the transmission rod (71), L2 is the force arm of the second end of the transmission rod (71), and F is the gravity of the sealing element (5); and the return spring (73) is in a compressed state, causing the sealing element (5) to have a tendency to move towards the first interface (321); When the above-mentioned seal (5) is engaged with the above-mentioned first interface (321) and the first interface (321) is closed, and the drain outlet (11) is open, the following formula is satisfied: K×△X×L2>G×L1, the above-mentioned return spring (73) is in a stretched state, and the seal (5) has the tendency to disengage from the first interface (321) and open the first interface (321).

4. The cleaning machine as described in claim 2 or 3, characterized in that, The upper end of the drain pipe (3) extends vertically and its upper port is connected to the drain outlet (11). The water inlet (31) is located on the pipe wall at the upper end of the drain pipe (3). The water connector (32) extends outward and upward relative to the upper end of the drain pipe (3), and the angle between the two is an acute angle. The first interface (321) is located at the middle of the water connector (32) along its own length direction, and the free end of the water connector (32) is the second interface (322). In the initial state, the first end of the transmission rod (71) abuts against the lower end of the pipe wall of the water inlet (32), and when the first interface (321) is closed and the drain (4) is open, the second end of the transmission rod (71) abuts against the lower end of the edge of the water inlet (31).

5. The cleaning machine as described in claim 4, characterized in that, The hinge seat (72) is adjacent to the aforementioned seal (5).

6. The cleaning machine according to any one of claims 1 to 3, characterized in that, It also includes a first sensor (9) for collecting image information or water pressure information at the first interface (321) mentioned above.

7. The cleaning machine as described in claim 6, characterized in that, The first sensor (9) is a vision sensor or a Hall sensor.

8. The cleaning machine according to any one of claims 1 to 3, characterized in that, The second elastic element (8) is a vertically extending spring. The upper end of the second elastic element (8) is connected to the bottom of the drain (4), and the lower end is connected to the bottom wall of the cover (12) that is installed on the drain outlet (11) and located in the drain pipe (3).

9. The cleaning machine as described in claim 8, characterized in that, It also includes a vertically extending guide tube (81), which is a corrugated tube that can extend and retract vertically, and the second elastic member (8) is spirally embedded in the tube wall of the guide tube (81) along the length direction, and the pressing member (6) is inserted into the guide tube (81).

10. The cleaning machine as described in claim 9, characterized in that, The drain assembly (4) has a circular cross-section, and the guide tube (81) and the pressing member (6) both extend along the central axis of the drain assembly (4).

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