Water cup assembly for cleaning machines and cleaning machines

Abstract

This invention relates to a water cup assembly and a cleaning machine for a cleaning machine, comprising a water cup; a filter plate covering the open top of the water cup; a drainage structure; a slag basket structure including a frame; a filter screen; a second water inlet located below a first water inlet on the peripheral wall of the frame, the second water inlet being located below a through hole; the filter screen can move up and down relative to the frame to a first position and a second position. When the drain valve cuts off the inlet of the drain pump, the filter screen is in the first position and blocks the first water inlet; when the drain valve connects to the inlet of the drain pump, the filter screen is in the second position and blocks the second water inlet, and the first water inlet is open; a brush that can contact the peripheral wall of the filter screen. When the filter screen is in the second position, the brush rotates around a vertically extending axis to clean the filter screen. Each water inlet and outlet constitutes a self-cleaning cycle, thereby improving the cleaning and self-cleaning effects.

Description

Technical Field

[0001] This invention relates to the field of cleaning machine technology for cleaning tableware and / or fruits and vegetables, and specifically to a water cup assembly for a cleaning machine and a cleaning machine. Background Technology

[0002] As people's living standards continue to improve, dishwashers, as a type of kitchen appliance, are increasingly entering households. Dishwashers generally consist of a cabinet and a spray system located within the cabinet. The spray system draws water from the bottom of the cabinet into the spray nozzles and sprays it into the washing chamber to rinse the dishes.

[0003] Dishwashers typically have a drain area at the bottom to allow for water circulation. For example, the Chinese invention patent application CN202011623665.X (publication number CN114081410A) discloses a "Slag Basket, a Water Tank-Type Washing Machine with the Slag Basket, and a Washing Method". The slag basket includes: a basket base, which is a vertical cylindrical structure with an internal cavity, and the upper end of the basket base is open to allow food residue to enter; a basket cover, which covers the upper end of the basket base, and the basket cover has a vertically extending annular sidewall and a top wall covering the top of the annular sidewall. The annular sidewall has a slag discharge hole that communicates with the upper opening of the basket base so that food residue can fall into it. The water tank type washing machine includes a slag discharge pipe located below the water tank body for discharging food residue and water from the water tank body, a drain pump located inside the slag discharge pipe for pumping out the food residue and water from the slag discharge pipe, and a valve body located inside the slag discharge pipe for opening and closing the passage inside the slag discharge pipe. The inlet of the slag discharge pipe is located upward on the drain outlet, and the inlet of the slag discharge pipe is connected to the slag falling channel in the basket. The maximum inner diameter of the slag discharge pipe is larger than the maximum diameter of the slag falling hole.

[0004] The bottom of the water tank body has a drainage area at least in the central part. A pump body is installed within the drainage area to pump water from the drainage area to the space above it. A drainage plate covers the drainage area, and the space above the drainage plate is the aforementioned cleaning chamber. The drain outlet is located within the drainage area, and the slag discharge hole is exposed above the drainage plate, with the lower edge of the slag discharge hole substantially at the same level as the upper surface of the drainage plate. At least a portion of the basket is located within the drainage area, and a filter screen is correspondingly installed on the side wall of the basket. Thus, some water can enter the drainage area through the slag basket and then be pumped out by the pump body to the cleaning chamber for circulation.

[0005] The patented basket has a filter screen on its peripheral wall corresponding to the drain area to filter out residue. However, this residue is difficult to clean manually. When the water flows in the drain area, it will be secondary contaminated by the residue, which also affects the return water efficiency. In addition, the residue is easy to stay on the filter screen and can easily contaminate the water again during the next wash, affecting the cleaning effect of the dishwasher. Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to provide a water cup assembly for a washing machine that prevents residue in the slag basket structure from contaminating the draining area of ​​the water cup, in light of the current state of the art.

[0007] The second technical problem to be solved by the present invention is to provide a cleaning machine that uses the above-mentioned water cup components, in view of the current state of the prior art.

[0008] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a water cup assembly for a cleaning machine, comprising...

[0009] A water cup having a drainage area with an open top, and a through hole connected to the drainage area at the bottom of the drainage area.

[0010] A filter plate is placed over the open top of the water cup;

[0011] Drainage structure, including a drainage pump for pumping water out of the drainage area and a drainage valve for shutting off or connecting the inlet of the drainage pump;

[0012] Basket structure, including

[0013] The frame is a vertically through-hole cylindrical shape and is fixedly inserted into the through hole. The top opening of the frame is located above the filter plate or flush with the upper surface of the filter plate. The frame is provided with a first water outlet on its peripheral wall, which is located in the drainage area.

[0014] The filter screen is located inside the frame.

[0015] The frame is characterized in that a second water inlet is provided on the peripheral wall of the frame, which is located below the first water inlet and the second water inlet is located below the through hole; the filter screen can move up and down relative to the frame to a first position and a second position. When the drain valve cuts off the inlet of the drain pump, the filter screen is in the first position and blocks the first water inlet. When the drain valve connects to the inlet of the drain pump, the filter screen is in the second position and blocks the second water inlet, and the first water inlet is open.

[0016] The water cup assembly also includes a brush disposed in the frame, which can contact the peripheral wall of the filter screen. When the filter screen is in the second position, the brush rotates about a vertically extending axis to clean the filter screen.

[0017] The filter screen can be a multi-piece design, or it can be a vertically continuous cylindrical shape, making the filter screen a single piece, which is convenient for processing and manufacturing, and can be raised or lowered as a whole.

[0018] The filter screen can be moved up and down by a drive mechanism such as a motor. However, such a drive mechanism occupies space in the frame, affecting water flow, and also increases costs. Therefore, the bottom of the filter screen is equipped with a buoyancy cylinder that can float under hydraulic pressure. When water enters the drainage area, the buoyancy cylinder moves upward under the action of buoyancy, and the filter screen moves upward synchronously with it. When the drainage area is drained, the filter screen and the buoyancy cylinder move downward under the impact of the water flow. In this way, only a buoyancy cylinder made of lightweight material is needed, and in coordination with the water flow, the up and down movement of the filter screen can be achieved, resulting in a simplified structure.

[0019] In the above solution, the filter screen and the buoyancy cylinder are connected by a connecting ring. A vertically extending mounting shaft is located at the center of the connecting ring, and a water-passing gap exists between the mounting shaft and the peripheral wall of the connecting ring. The brush is rotatably mounted on the mounting shaft. The mounting frame structure formed by the connecting ring and the mounting shaft not only securely connects the filter screen and the connecting ring but also serves to mount the brush, resulting in a compact structure.

[0020] A motor could be used to drive the brush, but this involves many components. Therefore, the water cup assembly also includes a first impeller. The first impeller includes a first mounting rod mounted on a mounting shaft. The peripheral wall of the first mounting rod has first blades that drive the first mounting rod to rotate under the impact of water flow. The first mounting rod is mounted on the mounting shaft and can rotate relative to the mounting shaft about a vertically extending axis. The brush is mounted on a second mounting rod, which is fixedly connected to the first mounting rod and the two are coaxial. During drainage, the first impeller rotates under the impact of water flow. Because the second mounting rod is fixedly connected to the first mounting rod, the first impeller drives the brush to rotate synchronously.

[0021] In order for the first impeller to rotate under the drive of the water flow, the first blade has at least two blades spaced apart along the circumference of the first mounting rod. Each first blade extends spirally along the circumference of the first mounting rod, and the upper surface of each first blade is the water-facing surface facing the water flow.

[0022] To further prevent residue from remaining on the filter screen, a hollow spray element is also provided on the mounting shaft. This spray element can rotate around the mounting shaft, and its top wall has a water inlet and a nozzle. The nozzle is located outside the water inlet and faces the filter screen. The brush, in conjunction with the water flow from the spray element, effectively scrubs the residue off the filter screen, resulting in a good cleaning effect.

[0023] A motor could be used to drive the spray nozzles, but this involves many components. Therefore, a second impeller, which can rotate relative to the first impeller, is also provided on the mounting shaft. The second impeller is coaxially arranged and fixed relative to the first impeller, and is fixedly connected to the spray nozzles, thus driving the spray nozzles to rotate. When the first impeller rotates, it not only drives the brush to rotate but also drives the second impeller to rotate. Because the second impeller is fixedly connected to the spray nozzles, it drives the spray nozzles to rotate, thereby spraying water onto the filter screen.

[0024] To ensure that the water entering the slag basket can flow onto the first impeller and that there is sufficient water flow impact force to rotate the first impeller, the water cup assembly also includes a vertically extending water collection pipe with open ends. The water collection pipe is conical in shape, wider at the top and narrower at the bottom, with its lower end located in the filter screen. The water collection pipe can move up and down and is always positioned above the first impeller. The water collection pipe not only guides the water to the first impeller, but its funnel shape also prevents residue at the bottom of the water collection pipe from flowing back from the top opening of the slag basket into the drainage area.

[0025] To limit the vertical movement of the water collection pipe and the filter screen, the frame is vertically spaced with a first limiting part and a second limiting part to limit the water collection pipe. When the filter screen is in the first position, the water collection pipe abuts against the first limiting part, and the top of the filter screen abuts against the outer peripheral wall of the water collection pipe. When the filter screen is in the second position, the filter screen abuts against the bottom wall of the frame, and the water collection pipe abuts against the second limiting part.

[0026] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a cleaning machine, characterized in that it includes a box body and the above-mentioned water cup assembly, wherein the bottom wall of the box body is the water cup, or, the bottom wall of the box body is provided with a notch, the water cup is installed at the bottom of the box body, and the top of the water cup faces the notch of the box body.

[0027] Compared with the prior art, the advantages of the present invention are as follows: the frame of the present invention is provided with a first water inlet and a second water inlet on its peripheral wall, the second water inlet being located below the through hole; the filter screen can move up and down relative to the frame to a first position and a second position. When the drain valve cuts off the inlet of the drain pump, the filter screen is in the first position and blocks the first water inlet. When the drain valve connects to the inlet of the drain pump, the filter screen is in the second position and blocks the second water inlet. The first water inlet is open, and in this state, the brush rotates around the vertically extending axis to clean the filter screen.

[0028] When the drain valve cuts off the drain pump inlet, water enters the drain area, and the filter screen is in the first position, allowing for normal cleaning and the residue basket to filter out food residue. When drainage is needed, the drain valve connects to the drain pump inlet, the filter screen is in the second position, and the brush scrubs the screen, removing food residue adhering to it. Because the entire self-cleaning process takes place below the through-hole, the removed food residue remains at the bottom of the drain area and is discharged with the drainage structure, preventing residue from remaining in the drain area. This improves cleaning effectiveness and reduces secondary pollution. Each inlet and outlet water flow constitutes one self-cleaning cycle, thus significantly enhancing both cleaning and self-cleaning performance. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the water cup assembly according to an embodiment of the present invention;

[0030] Figure 2 for Figure 1 A cross-sectional view (the filter is in the second position);

[0031] Figure 3 for Figure 2 Enlarged view of point A;

[0032] Figure 4 for Figure 3 A schematic diagram of the slag basket structure (water collection pipe not shown);

[0033] Figure 5 for Figure 3 An exploded view of the slag basket structure in the diagram;

[0034] Figure 6 for Figure 1 A cross-sectional view (filter in the first position);

[0035] Figure 7 for Figure 6 A schematic diagram of the structure of a water cup. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0037] like Figures 1-7 As shown, the washing machine of this preferred embodiment includes a housing (not shown) and a water cup assembly. The water cup assembly includes a water cup 1 and a filter plate (not shown). The water cup 1 has a drainage area 11 with an open top, and a through hole 12 communicating with the drainage area 11 is provided at the bottom of the water cup 1. The filter plate covers the open top of the water cup 1. The bottom wall of the housing is the water cup 1, or the bottom wall of the housing has a notch, the water cup 1 is installed at the bottom of the housing, and the top of the water cup 1 faces the notch of the housing. These are prior art technologies and will not be described in detail here.

[0038] The water cup assembly also includes a drainage structure, including a drainage pump for drawing water out of the draining area 11 and a drainage valve for shutting off or connecting the inlet of the drainage pump. The specific structure of the drainage structure and its cooperation with the water cup 1 are based on existing technology and will not be described in detail here. For example, a pump housing is set at the bottom of the water cup, and the lower part of the frame 2 mentioned below is located in the pump housing. Both the drainage pump and the drainage valve are set on the pump housing to handle the water in the pump housing. Reference can also be made to the patents disclosed in the background art of this application, as well as to the numerous existing patents filed by the applicant concerning this part.

[0039] The water cup assembly also includes a slag basket structure, which includes a frame 2, a filter screen 3, a brush 4, a first impeller 5, a second impeller 6, a spray component 7, and a buoyancy cylinder 8.

[0040] The frame 2 is a vertically penetrating cylindrical shape and is fixedly inserted into the through hole 12. The assembly between the frame 2 and the water cup 1 can be achieved using an existing rotary positioning structure, i.e., a locking block is provided on the frame 2, and a locking groove is provided on the peripheral wall of the through hole 12 on the water cup 1, allowing the locking block to rotate and engage. The frame 2 and the water cup 1 are detachably connected. Alternatively, the frame 2 and the through hole 12 can be tightly fitted. Preferably, the drainage area 11 is partially recessed to form a slag collection area 13, and the through hole 12 is located at the bottom of the slag collection area 13 to facilitate the flow of water from the drainage area 11 toward the slag basket structure.

[0041] The top opening of the frame 2 is located above the filter plate or flush with the upper surface of the filter plate. The top opening of the frame 2 serves as the inlet 20 for water to flow into the slag basket from above the drainage area 11 in the box.

[0042] The frame 2 has a first water outlet 21 and a second water outlet 22 located below the first water outlet 21 on its peripheral wall. The first water outlet 21 is located in the drainage area 11, and the second water outlet 22 is located below the through hole 12.

[0043] The filter screen 3 is located in the frame 2. The filter screen 3 can move up and down relative to the frame 2 to the first position and the second position. When the drain valve cuts off the inlet of the drain pump, the filter screen 3 is in the first position and blocks the first water outlet 21, and the second water outlet 22 is open. When the drain valve connects to the inlet of the drain pump, the filter screen 3 is in the second position and blocks the second water outlet 22, and the first water outlet 21 is open.

[0044] In this embodiment, the filter screen 3 is a vertically through-tube shape. The bottom of the filter screen 3 is provided with a buoyancy cylinder 8 that can float under hydraulic pressure. The filter screen 3 and the buoyancy cylinder 8 are connected by a connecting ring 91. A vertically extending mounting shaft 92 is provided in the center of the connecting ring 91. A water-passing gap exists between the mounting shaft 92 and the peripheral wall of the connecting ring 91. The mounting ring and the connecting ring 91 are connected by connecting ribs 93, which are multiple and spaced apart along the circumference of the connecting ring 91. The filter screen 3 can be bonded to the connecting ring 91. The bottom of the connecting ring 91 is provided with a dovetail-shaped protrusion 911, and the top wall of the buoyancy cylinder 8 is provided with a dovetail groove 81 into which the protrusion 911 can be embedded, thereby achieving relative fixation between the connecting ring 91 and the buoyancy cylinder 8.

[0045] When the drain valve cuts off the inlet of the drain pump and the water enters the drainage area 11, the buoyancy cylinder 8 moves upward under the action of buoyancy, and the filter screen 3 moves upward synchronously with it; when the drain valve connects the inlet of the drain pump and the drainage area 11 drains water, the filter screen 3 and the buoyancy cylinder 8 both move downward under the impact of the water flow; in this way, only a buoyancy cylinder 8 made of lightweight material needs to be set up, and with the coordination of water flow, the up and down movement of the filter screen 3 can be realized, and the structure is simplified.

[0046] The brush 4 is located in the frame 2 and can contact the peripheral wall of the filter screen 3. The brush 4 is rotatably mounted on the mounting shaft 92. When the filter screen 3 is in the second position, the brush 4 rotates around the vertically extending axis to clean the filter screen 3.

[0047] Specifically, the first impeller 5 includes a first mounting rod 51 mounted on a mounting shaft 92. The peripheral wall of the first mounting rod 51 is provided with first blades 52 that drive the first mounting rod 51 to rotate under the impact of water flow. Each first blade 52 has at least two blades spaced apart circumferentially along the first mounting rod 51. Each first blade 52 extends spirally circumferentially along the first mounting rod 51, and the upper surface of each first blade 52 is the water-facing surface. It should be noted that the method of driving the first blades 52 to rotate is not limited to the water flow driving method of this embodiment. A motor can be mounted on the mounting shaft 92, and the motor can be connected to the first impeller 5 to drive it to rotate.

[0048] The first mounting rod 51 can rotate relative to the mounting shaft 92 about a vertically extending axis. The brush 4 is mounted on the second mounting rod 42, which is fixedly connected to the first mounting rod 51 and the two are coaxial. During drainage, the first impeller 5 rotates under the impact of the water flow. Because the second mounting rod 42 is fixedly connected to the first mounting rod 51, the first impeller 5 drives the brush 4 to rotate synchronously.

[0049] The mounting shaft 92 is also equipped with a hollow spray element 7, which can rotate around the mounting shaft 92. The top wall of the spray element 7 is provided with a water inlet 71 and a nozzle 72. The nozzle 72 is located outside the water inlet 71 and faces the filter screen 3. The brush 4 works in conjunction with the water flow sprayed from the spray element 7 to scrub the residue on the filter screen 3, resulting in a good cleaning effect.

[0050] The second impeller 6 is coaxially arranged and fixed relative to the first impeller 5, and the second impeller 6 is fixedly connected to the spray element 7 and can drive the spray element 7 to rotate. When the first impeller 5 rotates, it not only drives the brush 4 to rotate, but also drives the second impeller 6 to rotate. Because the second impeller 6 is fixedly connected to the spray element 7, the second impeller 6 will drive the spray element 7 to rotate, so as to spray water onto the filter screen 3.

[0051] In this embodiment, a protrusion 921 is provided on the peripheral wall of the mounting shaft 92, and a through hole is provided on the bottom wall of the spray component 7 for the mounting shaft 92 to pass through. A groove 73 with a notch facing the protrusion 921 is provided around the periphery of the through hole on the bottom wall of the spray component 7. The protrusion 921 is embedded in the groove 73 to position the spray component 7 vertically. Furthermore, the bottom wall of the spray component 7 can rotate around the axis of the mounting shaft 92.

[0052] The lower part of the second impeller 6 is located in the spray element 7 and is fixedly connected to the spray element 7. The upper end of the second impeller 6 extends out of the water inlet 71 and is fixedly connected to the first mounting rod 51 of the first impeller 5. In this embodiment, the two are connected by a thread. The second impeller 6 can be in the same structural form as the first impeller 5, or it can simply be a rod mounted on the mounting shaft 92.

[0053] The water cup assembly also includes a vertically extending water collection pipe 0 with open ends. The water collection pipe 0 is cone-shaped, wider at the top and narrower at the bottom. The lower end of the water collection pipe 0 is located in the filter screen 3. The water collection pipe 0 can move up and down, and the water collection pipe 0 is always located above the first impeller 5. The water collection pipe 0 not only guides the water to the first impeller 5 to ensure sufficient water flow impact force to make the first impeller 5 rotate, but also has a funnel shape to prevent the residue at the bottom of the water collection pipe 0 from flowing back from the top opening of the slag basket into the drain area 11.

[0054] The frame 2 is vertically spaced along its upper edge with a first limiting part 23 and a second limiting part 24 that limit the water collection pipe 0. When the filter screen 3 is in the first position, the water collection pipe 0 abuts against the first limiting part 23, and the top of the filter screen 3 abuts against the outer peripheral wall of the water collection pipe 0, thereby limiting the upper limit position of the water collection pipe 0 and the filter screen 3. When the filter screen 3 is in the second position, the filter screen 3 abuts against the bottom wall of the frame 2, and the water collection pipe 0 abuts against the second limiting part 24, thereby limiting the lower limit position of the filter screen 3 and the water collection pipe 0.

[0055] In this embodiment, the first limiting part 23 is the top wall of the first water outlet 21 of the frame 2, and the second limiting part 24 is the bottom wall of the first water outlet 21 of the frame 2.

[0056] In this embodiment, the second mounting rod 42, the first mounting rod 51, and the second impeller 6 are arranged sequentially from top to bottom along the axial direction of the mounting shaft 92.

[0057] The working process of the water cup 1 component in this embodiment is as follows:

[0058] When the drain valve cuts off the inlet of the drain pump, water enters the drain area 11. The buoyancy cylinder 8 moves upward under the buoyancy of the water flow, causing the filter screen 3 to move upward until it reaches the first position. At this point, normal cleaning is performed, and the slag basket filters out residue. When drainage is needed, the drain valve connects to the inlet of the drain pump. The water flow impacts the filter screen 3, impeller 5, spray nozzles 7, and other components. The filter screen 3 moves downward until it reaches the second position. Due to the impact of the water flow, the first impeller 5 rotates, causing the brush 4 and spray nozzles 7 to rotate. The spray nozzles 7 spray water onto the filter screen 3, working in conjunction with the brush 4 to scrub the filter screen 3, removing food residue adhering to it. Because the entire self-cleaning process takes place below the through-hole 12, the removed food residue only remains below the drain area 11 and is discharged with the drainage structure, preventing residue from remaining in the drain area 11. This improves the cleaning effect and reduces secondary pollution. Each inlet and outlet operation constitutes one self-cleaning cycle, thus significantly improving both the cleaning and self-cleaning effects.

[0059] 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" 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 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.

Claims

1. A water cup assembly for a washing machine, comprising: Water cup (1), the water cup (1) has a draining area (11) with an open top, and the water cup (1) has a through hole (12) at the bottom of the draining area (11) that communicates with the draining area (11); A filter plate is placed over the top opening of the water cup (1); The drainage structure includes a drainage pump for pumping water out of the drainage area (11) and a drainage valve for shutting off or connecting the inlet of the drainage pump. Basket structure, including The frame (2) is a vertically through cylindrical shape and is fixedly inserted into the through hole (12). The top opening of the frame (2) is located above the filter plate or flush with the upper surface of the filter plate. The frame (2) has a first water outlet (21) on its peripheral wall, which is located in the drainage area (11). The filter screen (3) is located in the frame (2); Its features are, The frame (2) is also provided with a second water inlet (22) located below the first water inlet (21) on its peripheral wall. The second water inlet (22) is located below the through hole (12). The filter screen (3) can move up and down relative to the frame (2) to a first position and a second position. When the drain valve cuts off the inlet of the drain pump, the filter screen (3) is in the first position and blocks the first water inlet (21). When the drain valve connects to the inlet of the drain pump, the filter screen (3) is in the second position and blocks the second water inlet (22). The water cup assembly also includes a brush (4) disposed in the frame (2). The brush (4) can contact the peripheral wall of the filter screen (3). When the filter screen (3) is in the second position, the brush (4) rotates about the vertically extending axis to brush the filter screen (3).

2. The water cup assembly according to claim 1, characterized in that: The filter screen (3) is a vertically through-tube shape.

3. The water cup assembly according to claim 2, characterized in that: The bottom of the filter screen (3) is provided with a buoyancy cylinder (8) that can float under the action of water.

4. The water cup assembly according to any one of claims 1 to 3, characterized in that: The filter screen (3) is connected to the connecting ring (91). The central part of the connecting ring (91) is provided with a vertically extending mounting shaft (92). There is a water passage gap between the mounting shaft (92) and the peripheral wall of the connecting ring (91). The brush (4) is rotatably mounted on the mounting shaft (92).

5. The water cup assembly according to claim 4, characterized in that: It also includes a first impeller (5), which includes a first mounting rod (51) mounted on a mounting shaft (92). The first mounting rod (51) has a first blade (52) on its peripheral wall that drives the first mounting rod (51) to rotate under the impact of water flow. The first mounting rod (51) is mounted on the mounting shaft (92) and can rotate relative to the mounting shaft (92) about a vertically extending axis. The brush (4) is mounted on a second mounting rod (42), which is fixedly connected to the first mounting rod (51) and the two are coaxial.

6. The water cup assembly according to claim 5, characterized in that: The first blade (52) has at least two blades spaced apart along its circumference. Each first blade (52) extends spirally along the circumference of the first mounting rod (51), and the upper surface of each first blade (52) is the water-facing surface facing the water flow.

7. The water cup assembly according to claim 4, characterized in that: The mounting shaft (92) is also provided with a hollow spray element (7). The spray element (7) can rotate around the mounting shaft (92). The top wall of the spray element (7) is provided with a water inlet (71) and a nozzle (72). The nozzle (72) is located outside the water inlet (71).

8. The water cup assembly according to claim 7, characterized in that: The mounting shaft (92) is also provided with a second impeller (6) that can rotate relative to it. The second impeller (6) is coaxially arranged with the first impeller (5) and fixed relative to it. The second impeller (6) is fixedly connected to the spray component (7) and can drive the spray component (7) to rotate.

9. The water cup assembly according to claim 5, characterized in that: It also includes a vertically extending water collection pipe (0) with open ends. The water collection pipe (0) is cone-shaped with a larger top and a smaller bottom. The lower end of the water collection pipe (0) is located in the filter screen (3). The water collection pipe (0) can move up and down, and the water collection pipe (0) is always located above the first impeller (5).

10. The water cup assembly according to claim 9, characterized in that: The frame (2) is provided with a first limiting part (23) and a second limiting part (24) that limit the water collection pipe (0) at vertical intervals. When the filter screen (3) is in the first position, the water collection pipe (0) abuts against the first limiting part (23) and the top of the filter screen (3) abuts against the outer peripheral wall of the water collection pipe (0). When the filter screen (3) is in the second position, the filter screen (3) abuts against the bottom wall of the frame (2) and the water collection pipe (0) abuts against the second limiting part (24).

11. A cleaning machine, characterized in that, The device includes a housing and a water cup assembly as described in any one of claims 1 to 10. The bottom wall of the housing is the water cup (1), or the bottom wall of the housing has a notch, the water cup (1) is installed at the bottom of the housing, and the top of the water cup (1) faces the notch of the housing.

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