Cleaning machine

Abstract

The invention relates to a cleaning machine which comprises a first water tank with a water falling opening and a cleaning inner container with a water outlet, and further comprises a sewer pipe connected to the water falling opening and a drainer used for opening and closing the water falling opening, a water passing opening is formed in the sewer pipe, and a water passing connector is arranged on the water passing opening. The first connector is used for being in fluid communication with the water outlet, the second connector is used for being in fluid communication with the overflow port of the first water tank, and the sealing piece is used for sealing the first connector. The pressing piece is arranged on the drainer; the transmission mechanism is used for being in linkage with the sealing piece and comprises a first elastic piece extending in the vertical direction; and the second elastic piece is arranged below the drainer and is used for supporting the drainer. Compared with the prior art, the cleaning liner can be prevented from being polluted by returned water or returned bubbles, the use safety of the cleaning liner is guaranteed, and the use experience of a user is improved.

Description

Technical Field

[0001] The invention relates to the field of household appliances, and in particular to a cleaning machine. Background Art

[0002] The sink is an indispensable part of the family kitchen. People usually wash food and kitchen utensils in the sink. The sink is provided with an overflow port, so that when the water in the sink exceeds the set maximum water level, the water can flow into the sewer pipe through the overflow port. For example, the Chinese utility model patent "Integrated Sink Overflow Port Structure" with patent number ZL 202322981126.9 (authorization announcement number CN220928081U) and so on.

[0003] Furthermore, modern kitchens generally have double sinks, one of which is used as a daily cleaning sink, and the other as a functional sink for a sink cleaning machine, such as the Chinese invention patent "A sink and a cleaning machine using the sink" with application number CN202410736234.6 (publication number CN118633878A), and the Chinese utility model patent "Sink dishwasher and garbage disposal integrated machine" with patent number ZL202322640856.2 (authorization announcement number CN220898637U). A downpipe is connected to the drain port of the cleaning sink, and the washing water generated by the functional tank cleaning is collected into the downpipe through the interface. When there is backbubble or backwater at the interface, if the cleaning sink is directly drained at this time, the backbubble or backwater will enter the cleaning liner under the action of water pressure, affecting the drying effect of the items in the functional tank, and even causing the functional tank to be contaminated. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a cleaning machine in view of the prior art, wherein the cleaning machine can prevent the cleaning inner tank from being contaminated by back-bubbles or back-water.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a cleaning machine, comprising a first water tank with a water outlet and a cleaning inner tank with a water outlet, and also comprising a downpipe connected to the downpipe and a downpipe for opening and closing the downpipe, wherein a water outlet is provided on the downpipe, and a water connection is provided on the water outlet, and the water connection has a first interface for fluid communication with the water outlet and a second interface for fluid communication with the overflow of the first water tank, and is characterized in that it also comprises:

[0006] A sealing member, used for sealing the first interface;

[0007] A pressing piece, arranged on the drainer;

[0008] A transmission mechanism, used to link the above-mentioned sealing member, and comprising a first elastic member extending vertically;

[0009] A second elastic member is disposed below the drain and is used to support the drain;

[0010] In the initial state, the drain is embedded in the drain port to close the drain port, the second elastic member accumulates potential energy, and the first interface is opened;

[0011] The pressing piece is pressed, and the pressing piece drives the sealing piece through the transmission mechanism to close the first interface. At the same time, the first elastic piece accumulates potential energy; the pressing force applied to the pressing piece is canceled, and the first elastic piece releases the potential energy to drive the pressing piece to return to its original position and to subject the sealing piece to a force in the direction of the sealing first interface. When the pressing piece is returned to its original position, it resists against the limiting structure on the drain and drives the drain upward. The second elastic piece releases the potential energy and moves the drain upward and away 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 flow pressure acts on the transmission mechanism to cause the sealing piece to continue to be subjected to a force in the direction of the sealing first interface.

[0012] Further, the pressing member is a rod vertically inserted into the water discharger, and the transmission mechanism includes a transmission rod, which is arranged in the water connection joint along the length direction of the water connection joint, and the water connection joint is provided with a hinge seat, and the middle part of the transmission rod is connected to the hinge seat.

[0013] The sealing member is installed on the first end of the transmission rod, and the first interface is located above the sealing member. The first elastic member is a compression spring extending vertically, and the upper end of the first elastic member is connected to the lower end of the pressing member, and the lower end of the first elastic member is connected to the second end of the transmission rod exposed in the sewer pipe. In this way, the pressing member is pressed downward, and the pressing member moves vertically downward, the first elastic member is compressed and accumulates potential energy, and the second end of the transmission member rotates downward to make its first end rotate upward, and the sealing member is pushed into the first interface to close the first interface.

[0014] Furthermore, the sealing member is a spherical crown-shaped block whose size matches the first interface. The curved surface of the sealing member faces the first interface, and the bottom surface is connected to the first end of the transmission rod through a return spring, so that the sealing member can better seal the first interface, thereby better preventing bubbles or water from entering the first interface.

[0015] In the initial state, the following formula is satisfied: K×△X×L2≤G×L1, wherein K is the elastic coefficient of the first elastic member, △X is the compression amount of the first elastic member, L1 is the force arm of the first end of the transmission rod, L2 is the force arm of the second end of the transmission rod, and F is the gravity of the sealing member; and the return spring is in a compressed state so that the sealing member has a tendency to move toward the first interface; in this way, on the one hand, the first interface can be reliably maintained in the open state, and on the other hand, it is convenient to close the first interface through the sealing member when necessary (when the first water tank is drained and there is backflow or backbubbles at the first interface).

[0016] When the sealing member is clamped on the first interface and closes the first interface and the drain port is open, the following formula is satisfied: K×△X×L2>G×L1, and the return spring is in a stretched state, so that the sealing member has a tendency to detach from the first interface and open the first interface. In this way, the first interface can be reliably kept in an open state, and the sealing member can be easily detached from the first interface to open the first interface.

[0017] Furthermore, the upper end of the downpipe extends vertically and the upper end is connected to the downspout. The water outlet is provided on the pipe wall at the upper end of the downpipe. The water connection joint extends upward and outwardly relative to the upper end of the downpipe, and the angle formed by the two is an acute angle. The first interface is provided in the middle of the water connection joint along its own length direction, and the free end of the water connection joint is the second interface.

[0018] In the initial state, the first end of the transmission rod abuts against the lower end wall of the water connection joint, and when the first interface is closed and the drain is opened, the second end of the transmission rod abuts against the lower end of the edge of the water connection port. On the one hand, the overflow water of the first water tank and the washing water for cleaning the inner tank can be smoothly collected into the drain pipe, and on the other hand, the transmission rod can be stably arranged in the water connection joint and can better transmit the force to the sealing member. At the same time, when the drain is opened to drain, the water flow pressure can better act on the second end of the transmission rod, so that the first interface can be reliably kept in a closed state when the first water tank is draining.

[0019] Furthermore, the hinge seat is adjacent to the sealing member, so that the sealing member can more sensitively sense the change of the force (downward force of the pressing member or water flow pressure) on the second end of the transmission rod, thereby better controlling the opening and closing of the first interface.

[0020] Furthermore, a first sensor for collecting image information or water pressure information at the first interface is also included, so as to judge whether water or bubbles return at the first interface through the information collected by the first sensor, thereby determining whether to close the first interface.

[0021] Furthermore, the first sensor is a visual sensor or a Hall sensor. The visual sensor can be used to collect image information at the first interface, while the Hall sensor can be used to collect water pressure information at the first interface.

[0022] Furthermore, the second elastic member is a spring extending vertically, the upper end of which is connected to the bottom of the above-mentioned drain, and the lower end of which is connected to the bottom wall of the cover shell which is arranged on the above-mentioned drain outlet and located in the above-mentioned drain pipe. Therefore, the drain can be better separated from the drain outlet under the action of the second elastic member, ensuring the smooth opening of the drain outlet, and at the same time, the second elastic member can be stably installed.

[0023] Furthermore, it also includes a vertically extending guide tube, which is a bellows that can be extended and retracted up and down, and the second elastic member is spirally embedded in the tube wall of the guide tube along the length direction, and the pressing member is inserted into the guide tube. Therefore, the second elastic member can be better deformed under the guidance of the guide tube, and then the drain can better open and close the drain port. In addition, the guide tube can also guide the up and down movement of the pressing member.

[0024] Furthermore, the cross section of the drain is circular, and the guide tube and the pressing member extend along the central axis of the drain, so that the elastic force of the second elastic member can act evenly on the drain, ensuring the smooth movement of the drain, and then ensuring the reliability of the opening and closing control of the drain outlet, and also enabling the pressing member to move up and down smoothly, ensuring the smooth movement of the sealing member, and then ensuring the reliability of the opening and closing control of the first interface.

[0025] Compared with the prior art, the present invention has the advantages of: a sealing member, a pressing member, a transmission mechanism and a second elastic member. In the initial state, the drain is embedded in the above-mentioned drain port to close the drain port, and the second elastic member accumulates potential energy, and the first interface is opened. In this way, the user can store water in the first water tank, and the washing water in the cleaning tank can be smoothly discharged into the drain pipe through the first interface. When the first sink is draining and there is backflow or backbubbles at the first interface, the pressing member is pressed, and the pressing member drives the sealing member through the transmission mechanism to close the first interface, and at the same time, the first elastic member accumulates potential energy; the pressing force applied to the pressing member is canceled, and the first elastic member releases the potential energy to drive the pressing member to reset and the sealing member to be subjected to a force in the direction of the first interface. When the pressing member is reset, it counteracts the limiting structure on the drain and drives the drain upward, and the second elastic member releases the potential energy to move the drain upward and away from the drain outlet. The drain outlet is opened, and the water in the first sink flows into the drain pipe through the drain outlet, and the water flow pressure acts on the transmission mechanism to cause the sealing member to continue to be subjected to a force in the direction of the first interface. In this way, by opening the drain outlet and closing the first interface, it is possible to avoid backbubbles or backwater from entering the connecting pipe between the water outlet and the first interface or directly entering the cleaning liner from the first interface under the action of water pressure when the first sink is draining, thereby avoiding the cleaning liner from being contaminated, ensuring the safety of the cleaning liner, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0028] Figure 3 It is a cross-sectional view of the cleaning machine in the embodiment of the present invention with the water outlet opened;

[0029] Figure 4 for Figure 2 A magnified view of part A;

[0030] Figure 5 for Figure 3 Magnified view of part B. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0033] like Figures 1 to 5 As shown, a cleaning machine includes a first water tank 1 with a water outlet 11 and a cleaning liner with a water outlet 22, and also includes a downpipe 3 connected to the downpipe 11 and a downpipe 4 for opening and closing the downpipe 11. A water port 31 is provided on the downpipe 3, and a water connection joint 32 is provided on the water port 31, and the water connection joint 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 port (not shown) of the first water tank 1. In this embodiment, the cleaning liner is a second water tank 2 arranged side by side with the first water tank 1, and the upper opening of the second water tank 2 is covered with a door body 21, and the water outlet 22 is provided on the bottom wall of the second water tank 2.

[0034] Furthermore, it also includes a sealing member 5, a pressing member 6, a transmission mechanism 7 and a second elastic member 8, wherein the sealing member 5 is used to seal the above-mentioned first interface 321, and the pressing member 6 is arranged on the above-mentioned drain 4. The transmission mechanism 7 is used to link the above-mentioned sealing member 5, and includes a first elastic member 74 extending vertically. The second elastic member 8 is arranged under the above-mentioned drain 4 and is used to support the drain 4. Moreover, in the initial state, the above-mentioned drain 4 is embedded in the above-mentioned drain port 11 to close the drain port 11, and the above-mentioned second elastic member 8 accumulates potential energy, and the above-mentioned first interface 321 is opened. When the first water tank 1 is drained and there is backflow or backbubbles at the first interface 321, at this time, the above-mentioned pressing member 6 is pressed, and the pressing member 6 drives the sealing member 5 through the transmission mechanism 7 to close the first interface 321, and at the same time, the first elastic member 74 accumulates potential energy. Next, the pressing force applied to the pressing member 6 is cancelled, 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 the first sealing interface 321. When the pressing member 6 is reset, it abuts against the limiting structure (not shown) 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 away from the drain outlet 11, and the drain outlet 11 is opened. The water in the first water tank 1 flows into the drain pipe 3 through the drain outlet 11, and the water flow pressure acts on the transmission mechanism 7, causing the sealing member 5 to continuously be subjected to a force in the direction of the first sealing interface 321, so that the first interface 321 can always remain in a closed state.

[0035] As can be seen from the above, the present invention can prevent bubbles or water from returning from the first interface 321 to enter the connecting pipe between the water outlet 22 and the first interface 321 or directly enter the cleaning tank under the action of water pressure when the first water tank 1 is draining water by opening the drain outlet 11 and closing the first interface 321, thereby preventing the cleaning tank from being contaminated, ensuring the safety of the cleaning tank, and improving the user experience.

[0036] In this embodiment, specifically, the pressing member 6 is a rod vertically inserted into the water discharger 4, and the transmission mechanism 7 includes a transmission rod 71, which is arranged in the water connection joint 32 along the length direction of the water connection joint 32, and a hinge seat 72 is arranged in the water connection joint 32, and the middle part of the transmission rod 71 is connected to the hinge seat 72. The sealing member 5 is installed on the first end of the transmission rod 71, and the first interface 321 is located on the sealing member 5, and the first elastic member 74 is a compression spring extending vertically, and the upper end of the first elastic member 74 is connected to the lower end of the pressing member 6, and the lower end of the first elastic member 74 is connected to the second end of the transmission rod 71 exposed in the water discharge pipe 3. In this way, the pressing member 6 is pressed downward and moves vertically downward, the first elastic member 74 is compressed and accumulates potential energy, and the second end of the transmission member rotates downward to rotate the first end thereof upward, and the sealing member 5 is pushed into the first interface 321 to close the first interface 321 .

[0037] Further, the sealing member 5 is a spherical crown-shaped block (in this embodiment, a hemispherical shape) whose size matches the first interface 321. The curved surface of the sealing member 5 faces the first interface 321, and the bottom surface is connected to the first end of the transmission rod 71 through the return spring 73. The junction between the first interface 321 and the water-passing joint 32 is rounded, so that the sealing member 5 can better seal the first interface 321, thereby better preventing bubbles or water from entering the first interface 321. Further, in the initial state, the following formula is satisfied: K×△X×L2≤G×L1, wherein K is the elastic coefficient of the first elastic member 74, △X is the compression amount of the first elastic member 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 member 5. In addition, the return spring 73 is in a compressed state, so that the sealing member 5 has a tendency to move toward the first interface 321. In this way, on the one hand, the first interface 321 can be reliably kept in an open state, and on the other hand, it is convenient to close the first interface 321 through the sealing member 5 when necessary (when the first water tank 1 is drained and there is backflow or backbubbles at the first interface 321). The sealing member 5 is clamped on the first interface 321 to close the first interface 321 and the drain outlet 11 is open, satisfying the following formula: K×△X×L2>G×L1, and the return spring 73 is in a stretched state so that the sealing member 5 has a tendency to detach from the first interface 321 and open the first interface 321. In this way, on the one hand, the first interface 321 can be reliably kept in an open state, and on the other hand, it is convenient to detach the sealing member 5 from the first interface 321 and open the first interface 321.

[0038] Preferably, the upper end of the downpipe 3 extends vertically and the upper end is connected to the drain port 11. The water port 31 is provided on the pipe wall at the upper end of the downpipe 3. The water connection joint 32 extends outwardly and upwardly relative to the upper end of the downpipe 3, and the angle formed by the two is an acute angle (about 70° in this embodiment). The first interface 321 is provided in the middle of the water connection joint 32 along its own length direction, and the free end of the water connection joint 32 is the second interface 322. In the initial state, the first end of the transmission rod 71 abuts against the lower end pipe wall of the water connection joint 32, and when the first interface 321 is closed and the downpipe 4 is opened, the second end of the transmission rod 71 abuts against the lower end of the edge of the water port 31. On the one hand, the overflow water of the first water tank 1 and the washing water for cleaning the inner tank can be smoothly gathered into the sewer pipe 3; on the other hand, the transmission rod 71 can be firmly arranged in the water connection joint 32, and the force can be better transmitted to the sealing member 5; at the same time, when the drain outlet 11 is opened for drainage, the water pressure of the water flow can better act on the second end of the transmission rod 71, so that the first interface 321 can be reliably kept in a 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 change of the force (downward pressure of the pressing member 6 or water pressure) on 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. In this way, the information collected by the first sensor 9 is used to determine whether water or bubbles are flowing back 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. The visual sensor can be used to collect image information at the first interface 321, while the Hall sensor can be used to 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 connection joint 32 (such as Figure 4 and Figure 5 shown).

[0041] Furthermore, the second elastic member 8 is a spring extending vertically, the upper end of which is connected to the bottom of the water drain 4, and the lower end is connected to the bottom wall of the cover 12 which is arranged on the water outlet 11 and located in the water drain pipe 3, so that the water drain 4 can be better separated from the water outlet 11 under the action of the second elastic member 8, ensuring the smooth opening of the water outlet 11, and at the same time, the second elastic member 8 can be stably installed. Preferably, a vertically extending guide tube 81 is also included, which is a bellows that can be extended and retracted up and down, 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 penetrated in the guide tube 81. Therefore, the second elastic member 8 can be better deformed under the guidance of the guide tube 81, and then the water drain 4 can better open and close the water outlet 11. In addition, the guide tube 81 can also guide the up and down movement of the pressing member 6. Further preferably, the cross section of the drain 4 is circular, and the guide tube 81 and the pressing member 6 both extend along the central axis direction of the drain 4. Thus, the elastic force of the second elastic member 8 can act evenly on the drain 4, ensuring the smooth movement of the drain 4, and then ensuring the reliability of the opening and closing control of the water outlet 11. In addition, the pressing member 6 can also move up and down smoothly, ensuring the smooth movement of the sealing member 5, and then ensuring the reliability of the opening and closing control of the first interface 321.

[0042] In this embodiment, a hole (not shown) is provided at the center of the water discharge 4 for the pressing member 6 to pass through, and the cross section of the top of the pressing member 6 decreases from bottom to top, while the top of the hole is narrowed from bottom to top. In this way, when the pressing member 6 is in place, the top of the pressing member 6 and the top of the hole wall of the hole are abutted against each other up and down along the circumference, thereby realizing the upper limit of the pressing member 6.

[0043] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two components or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected to each other, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A cleaning machine, comprising a first water tank (1) having a water outlet (11) and a cleaning inner tank having a water outlet (22), and also comprising a water pipe (3) connected to the water outlet (11) and a water discharger (4) for opening and closing the water outlet (11), wherein: The down pipe (3) is provided with a water opening (31), the water opening (31) is provided with a water connection joint (32), and the water connection joint (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 port of the first water tank (1), and is characterized in that it also includes: A sealing member (5) for sealing the first interface (321); A pressing member (6) is arranged on the drain (4); A transmission mechanism (7) is used to link the sealing member (5) and comprises a first elastic member (74) extending vertically; A second elastic member (8) is disposed below the drain (4) and is used to support the drain (4); In the initial state, the drain (4) is embedded in the drain outlet (11) to close the drain outlet (11), and the second elastic member (8) accumulates potential energy, while the first interface (321) is opened; The pressing member (6) is pressed, and the pressing member (6) drives the sealing member (5) through the transmission mechanism (7) to close the first interface (321), and at the same time, the first elastic member (74) accumulates potential energy; the pressing force applied to the pressing member (6) is cancelled, and the first elastic member (74) releases the potential energy to drive the pressing member (6) to return to its original position and causes the sealing member (5) to be subjected to a force in the direction of the sealed first interface (321); when the pressing member (6) is returned to its original position, it abuts against the limiting structure on the drain (4) and drives the drain (4) upward; the second elastic member (8) releases the potential energy and causes the drain (4) to move upward and separate from the drain outlet (11); the drain outlet (11) is opened, and the water in the first water tank (1) flows into the drain pipe (3) through the drain outlet (11), and the water flow pressure acts on the transmission mechanism (7) so that the sealing member (5) is continuously subjected to a force in the direction of the sealed first interface (321).

2. The cleaning machine according to claim 1, characterized in that The pressing member (6) is a rod member vertically inserted into the water discharger (4). The transmission mechanism (7) comprises a transmission rod (71). The transmission rod (71) is arranged in the water connection joint (32) along the length direction of the water connection joint (32). The water connection joint (32) is provided with a hinge seat (72). The middle part of the transmission rod (71) is connected to the hinge seat (72). The sealing member (5) is mounted on 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 compression spring extending vertically, and the upper end of the first elastic member (74) is connected to the lower end of the pressing member (6), and the lower end of the first elastic member (74) is connected to the second end of the transmission rod (71) exposed in the sewer pipe (3).

3. The cleaning machine according to claim 2, characterized in that: The sealing member (5) is a spherical crown-shaped block whose size matches the first interface (321). The curved surface of the sealing member (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, wherein K is the elastic coefficient of the first elastic member (74), △X is the compression amount of the first elastic member (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 member (5); and the return spring (73) is in a compressed state so that the sealing member (5) has a tendency to move toward the first interface (321); When the sealing member (5) is clamped on the first interface (321) to close the first interface (321) and the drain outlet (11) is open, the following formula is satisfied: K×△X×L2>G×L1, and the return spring (73) is in a stretched state so that the sealing member (5) has a tendency to detach from the first interface (321) and open the first interface (321).

4. The cleaning machine according to claim 2 or 3, characterized in that: The upper end of the downpipe (3) extends vertically and the upper end is connected to the downspout (11). The water opening (31) is provided on the pipe wall of the upper end of the downpipe (3). The water connection joint (32) extends outwardly and upwardly relative to the upper end of the downpipe (3), and the angle formed by the two is an acute angle. The first interface (321) is provided at the middle of the water connection joint (32) along its own length direction, and the free end of the water connection joint (32) is the second interface (322). In the initial state, the first end of the transmission rod (71) abuts against the lower end tube wall of the water connection joint (32), and when the first interface (321) is closed and the drain (4) is opened, the second end of the transmission rod (71) abuts against the lower end of the edge of the water opening (31).

5. The cleaning machine according to claim 4, characterized in that: The hinge seat (72) is adjacent to the sealing member (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).

7. The cleaning machine according to claim 6, characterized in that The first sensor (9) is a visual sensor or a Hall sensor.

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

9. The cleaning machine according to claim 8, characterized in that It also includes a vertically extending guide tube (81), which is a bellows that can be extended and retracted up and down, 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 according to claim 9, characterized in that The cross section of the drain (4) is circular, and the guide tube (81) and the pressing member (6) both extend along the central axis direction of the drain (4).

Images