Cup washing device

Abstract

The invention discloses a cup washing device which comprises a base used for being fixedly assembled to a using table top, and further comprises a water channel assembly arranged in the base, the water channel assembly is provided with a channel for fluid to pass through, and the channel is provided with at least one valve port for controlling the channel to be opened and closed; the nozzle assembly is configured to be communicated with the water outlet end of the water channel assembly; the water drainage disc is assembled on the base and / or the water channel assembly in a detachable mode, and the water drainage disc is constructed to be capable of moving so as to control on-off of the valve port; according to the cup washing device, through detachable connection of the drainage disc, the space between the lower end of the drainage disc and a using table top can be conveniently and timely washed, and dirt residues are prevented.

Description

Technical Field

[0001] The present invention relates to a cup washer. Background Art

[0002] The cup washer is suitable for cleaning water cups, tea cups, baby bottles and various beverage cups. Especially for some cups with certain diameters, the areas that a dishcloth cannot reach can be efficiently cleaned by this cup washer. However, the drainage tray on the cup washer is fixedly installed on the use tabletop, and the gap between its bottom and the tabletop is small, which makes it difficult to clean between the drainage tray and the tabletop, and dirt and bacteria will accumulate, causing great trouble to users. Moreover, the cup washers currently on the market generally have the following situations: 1. The cup-washing part consists of a cup rack and a drainage tray. The cup rack controls the water switch, places the cup and has a drainage function, and the drainage tray mainly realizes the drainage and water guiding functions. The drainage tray is not detachable, resulting in difficult cleaning of the drainage tray. 2. The water outlet angle of the nozzle is fixed, and the cleaning surface is limited and cannot achieve the cleaning effect. 3. When the water spraying is turned on, the cup presses down the cup rack, and the cup, cup rack and nozzle will move down synchronously, while the drainage tray is relatively fixed. In this way, the depth position of the nozzle extending into the cup remains unchanged. When cleaning a cup with a larger depth, its bottom may not be effectively cleaned. For example, the water flow cannot reach or the impact force is insufficient, etc., so that the bottom of the deeper cup cannot be better cleaned, and it is easy to have unclean areas. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a detachable cup washer.

[0004] The present invention is realized through the following technical solutions:

[0005] A cup washer includes a base for fixedly assembling to a use tabletop, and further includes: a water channel assembly disposed in the base, the water channel assembly being configured with a channel for fluid to pass through, and at least one valve port for controlling the on / off of the channel being disposed on the channel; a nozzle assembly configured to communicate with the water outlet end of the water channel assembly; a drainage tray assembled to the base and / or the water channel assembly in a detachable manner, wherein the drainage tray is configured to be movable to control the on / off of the valve port.

[0006] In an embodiment of the present invention, the drainage tray is provided with a mounting hole in the middle of its main body, the mounting hole is configured to form a hole-shaft fit relationship with the water channel assembly, and the drainage tray is configured to be axially movable along the water channel assembly to be sleeved on the water channel assembly or to be disengaged from the water channel assembly.

[0007] In an embodiment of the present invention, it further includes a movable valve shaft, the movable valve shaft is operably connected to the drain pan, and the drain pan is configured to be able to control the axial and / or circumferential movement of the movable valve shaft relative to the water channel assembly, so as to realize the switching of the movable valve shaft between the state of closing the valve port and the state of opening the valve port.

[0008] In an embodiment of the present invention, the movable valve shaft can be sleeved on the outer periphery of the water channel assembly, a water passing channel is formed between the movable valve shaft and the water channel assembly, and the movable valve shaft can axially move relative to the water channel assembly; the water channel assembly can be fixed on the inner periphery of the base, the drain pan can be cooperatively connected with the movable valve shaft, and the drain pan can drive the movable valve shaft to axially move relative to the water channel assembly after being pressed; the nozzle assembly can be placed above the drain pan; the water channel assembly is configured with a water inlet channel, a water outlet, a water inlet and a water outlet channel. When the movable valve shaft moves to the sealing fit position, the water flow into the water outlet channel is blocked; when the movable valve shaft moves to disengage from the sealing fit, the water channel assembly is communicated with the water passing channel.

[0009] In an embodiment of the present invention, it further includes a return spring, the return spring can be cooperatively connected with the movable valve shaft, so that the movable valve shaft can be reset after moving, and the switching of the water passing function of the water channel assembly from opening to closing is realized.

[0010] In an embodiment of the present invention, a sealing ring is provided on the outer periphery of the water channel assembly at the water passing channel, and a convex ring is provided on the inner periphery of the movable valve shaft; when the movable valve shaft is in the sealing position, the convex ring can be in sealing fit with the sealing ring, so that the water passing channel is in a water cut-off state; a first sealing member is provided between the outer periphery of the water inlet shaft below the water outlet and the inner periphery of the movable valve shaft, and a second sealing member is provided between the outer periphery of the water outlet shaft above the water inlet and the inner periphery of the movable valve shaft.

[0011] In an embodiment of the present invention, the nozzle assembly includes a nozzle, a connecting member and a bearing that cooperate with each other. The bearing is fixed to the upper end of the water channel assembly through a lock nut. The inner periphery of the connecting member is cooperatively connected with the outer periphery of the bearing, and the outer periphery of the connecting member is connected to the nozzle. The nozzle is provided with a non-axially arranged injection port.

[0012] In an embodiment of the present invention, the drain pan can be sleeved on the outer periphery of the movable valve shaft, and an abutting portion is provided on the drain pan. The abutting portion can be in abutting fit with the upper end portion of the movable valve shaft, so that the drain pan and the movable valve shaft can synchronously move axially downward. A first sealing ring is also provided between the outer periphery of the movable valve shaft and the drain pan.

[0013] In an embodiment of the present invention, it further includes a pressing plate that can axially move downward relative to the nozzle assembly. The pressing plate can be located on the outer periphery of the nozzle assembly, and the lower end of the pressing plate can abut against the drain pan and / or the movable valve shaft, so that the pressing plate can drive the movable valve shaft to move downward.

[0014] In an embodiment of the present invention, an annular flange is further provided on the outer periphery of the base, and the lower end surface of the annular flange can be received on the use tabletop, and a second sealing ring is provided between the use tabletop and the lower end surface of the annular flange.

[0015] A cup washer of the present invention has the following beneficial effects: it can conveniently and timely clean the space between the lower end of the drainage tray and the use tabletop to prevent dirt residue; at the same time, the drainage tray of the cup washer controls the waterway switch, and by pressing the drainage tray, the movable valve shaft is driven to control the waterway switch. The cup rack is an optional part and can be cancelled, simplifying the product with low cost, and only a single drainage tray is required to achieve this; at the same time, when water is passed, the nozzle does not move downward, and the cup to be cleaned and the drainage tray move downward, so that the nozzle can extend deeper into the cup, enabling the nozzle to clean the bottom of the cup and making the cleaning more thorough. The nozzle rotates automatically when water is passed, providing 360-degree dead-angle-free cleaning and improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0017] Figure 1 is a perspective view of an exemplary embodiment of the cup washer of the present disclosure.

[0018] Figure 2 is Figure 1 an exploded view of the cup washer shown.

[0019] Figure 3 is Figure 1 a cross-sectional view of the cup washer shown along the dotted line AA.

[0020] Figure 4 is a perspective view of another exemplary embodiment of the cup washer of the present disclosure.

[0021] Figure 5 is Figure 4 a cross-sectional view of the cup washer shown along the dotted line BB.

[0022] Figure 6 is Figure 3 a partial enlarged view of area A in the cup washer shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It 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, and thus should not be construed as a limitation of the present invention.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0026] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] Referring to the accompanying drawings of the specification, a cup washer includes a base 10 configured to be fixedly assembled to a use tabletop 100. The base may be a copper pipe that can be fixed on the use tabletop, and further includes: a water channel assembly disposed in the base. The water channel assembly is configured with a channel for fluid to pass through. The channel can be composed of a water inlet channel 53 and a water outlet channel 55, and at least one valve port for controlling the on / off of the channel is disposed on the channel. Refer to Figure 6 , the valve port may be formed by the inner circumference of a convex ring 33. Whether the channel is filled with water is realized by whether a sealing ring 57 disposed on the outer circumference of the water channel assembly is engaged with the convex ring; a nozzle assembly configured to be connected to the water outlet end of the water channel assembly, and water flow can be ejected from the ejection port 21 of the nozzle assembly to wash a cup; a drain pan 40 assembled to the base and / or the water channel assembly in a detachable manner. Wherein, the drain pan is configured to be movable to control the on / off of the valve port, that is to say, the drain pan is detachably sleeved on the outer circumference of the nozzle assembly. In this way, whether it is installation or disassembly, the drain pan can be quickly installed or disassembled, as long as it is sleeved on the outer circumference of the nozzle assembly, and it can be conveniently taken away at any time without using tools anymore.

[0029] Referring to the accompanying drawings Figure 3 、 5 、6, a movable valve shaft is sleeved on the outer circumference of the nozzle assembly. In this way, the drain pan is sleeved on the outer circumference of the movable valve shaft, and the drain pan can move up and down relative to the nozzle assembly and can be directly taken away from the whole set. A first sealing ring 42 may be provided to reduce the water flowing between the drain pan and the movable valve shaft and reduce the situation of dirt accumulation and bacteria breeding. In a preferred embodiment, the perforation 44 in the drain pan has a size larger than the outer diameters of the nozzle assembly and the movable valve shaft. In this way, it is convenient for the installation and removal of the drain pan. At the same time, an annular boss 14 is formed on the base, and the outer diameter of the annular boss is adapted to the major diameter of the movable valve shaft, so that the perforation can be located on the outer circumference of the movable valve shaft and the annular boss.

[0030] Preferably, the drain pan is provided with an installation hole 45 in the middle of its main body. In one embodiment, the aperture of the installation hole can be smaller than that of the perforation, thus forming an abutting portion 41. The installation hole is configured to form a hole-axis mating relationship with the water channel assembly, and the drain pan is configured to be able to move axially along the water channel assembly to be sleeved on the water channel assembly or to be disengaged from the water channel assembly.

[0031] Furthermore, it further includes a movable valve shaft 30. The movable valve shaft is operably connected to the drain pan, and the drain pan is configured to be able to control the axial and / or circumferential movement of the movable valve shaft relative to the water channel assembly to switch the movable valve shaft between the state of closing the valve port and the state of opening the valve port. The movable valve shaft can be controlled by the drain pan and / or the pressure plate to perform corresponding movements.

[0032] Preferably, the water channel assembly can be fixed to the inner circumference of the base. The water channel assembly mainly realizes whether water flows through to clean a cleaning part (such as a cup). It includes a nozzle assembly having a jet orifice 21. The nozzle assembly can be communicated with the water outlet end of the water channel assembly. When the water channel assembly is filled with water, the water flows out from the jet orifice of the nozzle assembly to clean the cup. There is a movable valve shaft 30 which can be sleeved on the outer circumference of the water channel assembly. The movable valve shaft can move axially relative to the water channel assembly (in the up and down direction in the figure) to open or close the water passing function of the water channel assembly. The drain pan 40 can be connected in cooperation with the movable valve shaft. The drain pan can drive the movable valve shaft to move axially relative to the water channel assembly after being pressed. The nozzle assembly can be placed above the drain pan. In the normal state, under the action of the return spring, the movable valve shaft realizes the sealing fit between the convex ring and the sealing ring, so that the water flow cannot circulate and the water channel assembly is in a non-water-passing state. When cleaning is required, the cup drives the drain pan to move downward. At this time, the return spring is compressed, and the movable valve shaft and the cup move downward relative to the nozzle assembly, the base, etc., so that the nozzle assembly is located at a deeper position of the cup. At the same time, the convex ring is separated from the sealing ring, and the water channel assembly realizes the water-passing state. The water flow shoots from the jet orifice to the inner peripheral wall of the cup for cleaning operation. After the cleaning is completed, the cup is taken away. Under the action of the return spring, the drain pan and the movable valve shaft are reset, and the water channel assembly returns to the non-water-passing state.

[0033] Preferably, it further includes a return spring 31. The return spring can be connected in cooperation with the movable valve shaft to reset the movable valve shaft after it moves, realizing the switching of the water passing function of the water channel assembly from opening to closing. One end of the return spring acts on the movable valve shaft, and the other end can be connected to the base.

[0034] Further, a water passage 32 can be formed between the outer periphery of the water channel assembly and the inner periphery of the movable valve shaft. The water channel assembly mainly includes a water inlet channel 53, a water outlet 54, a water inlet 56, and a water outlet channel 55. In a preferred embodiment, the water channel assembly includes a water inlet shaft 51 and a water outlet shaft 52 that can be connected in cooperation. The water inlet shaft and the water outlet shaft can be configured to be integrally manufactured or separately provided, and can form a component by means of a connection similar to a threaded connection. The separate connection method can facilitate the assembly operation of the entire product. Among them: the above-mentioned water inlet channel 53 and water outlet 54 are arranged on the water inlet shaft and can maintain the flow of water. The above-mentioned water outlet channel 55 and water inlet 56 are arranged on the water outlet shaft and can maintain the flow of water. The water can flow through the water inlet channel, water outlet, water passage, water inlet, and water outlet channel in sequence and then flow to the nozzle assembly.

[0035] When the movable valve shaft is in the first position relative to the base, the water passage is in a water cut-off state. When the movable valve shaft is not in the first position, the water passage is in a water-through state. In one embodiment, specifically: a sealing ring 57 is provided on the outer periphery of the water channel assembly at the water passage, and a convex ring 33 is provided on the inner periphery of the movable valve shaft. When the movable valve shaft is in the first position, the convex ring can be in sealing cooperation with the sealing ring, that is, when the movable valve shaft is in the sealing position, the water passage is in a water cut-off state, and at the same time the water inlet shaft can be connected to the water source. Referring to the attached drawings, water flows from the inside of the water inlet shaft to the outer water passage, flows to the inner periphery of the water outlet shaft, and then shoots out from the injection port.

[0036] To prevent water leakage, a first sealing member 58 is provided between the outer periphery of the water inlet shaft below the water outlet and the inner periphery of the movable valve shaft, and a second sealing member 59 is provided between the outer periphery of the water outlet shaft above the water inlet and the inner periphery of the movable valve shaft. At the same time, these two sealing members maintain sealing cooperation even when the movable valve shaft moves relative to the water channel assembly.

[0037] Furthermore, the lower end of the water inlet shaft can be fixedly connected to the inner periphery of the base, and the upper end of the water outlet shaft is connected to a nozzle assembly. A threaded connection method can be adopted, so that when in use, the water channel assembly and the nozzle assembly are both fixed on the base and will not move axially. The nozzle assembly includes a nozzle 22, a connecting member 23, and a bearing 24 that cooperate with each other. The bearing is fixed to the upper end of the water outlet shaft, that is, the water outlet end of the water outlet shaft, through a lock nut 25, which facilitates the rotation of the nozzle. The inner periphery of the connecting member is connected to the outer periphery of the bearing, and the outer periphery of the connecting member is connected to the nozzle. The nozzle is provided with a non-axially arranged injection port 21, so that the nozzle can rotate relative to the base under the action of water impact force, increasing the cleaning area.

[0038] Preferably, the drain pan can be sleeved on the outer periphery of the movable valve shaft. An abutting portion 41 is provided on the drain pan. The abutting portion is arranged at the upper end of the perforation and protrudes inward. The abutting portion can be in abutting cooperation with the upper end portion of the movable valve shaft, so that the drain pan and the movable valve shaft can move downward synchronously along the axis. A first sealing ring 42 is further arranged between the outer periphery of the movable valve shaft and the drain pan to prevent water leakage between the two.

[0039] It further includes a pressure plate 60 that can move downward along the axis relative to the nozzle assembly. The pressure plate can be located on the outer periphery of the nozzle assembly. The lower end of the pressure plate can abut against the drain pan and / or the movable valve shaft, so that the pressure plate can drive the movable valve shaft to move downward along the axis. The pressure plate can be an optional part, which can be pressed down when receiving a cup and can also be called a cup holder. However, it only drives the movable valve shaft to move downward, and the nozzle assembly does not move.

[0040] During use, a circular flange 11 is further arranged on the outer periphery of the base. The lower end surface of the circular flange can rest on the use tabletop. A second sealing ring 12 is arranged between the use tabletop and the lower end surface of the circular flange to prevent water from leaking from the installation hole of the use tabletop to under the table.

[0041] More specifically, in the present invention: The drain pan: can move vertically up and down, is a touch switch for turning water on and off, and controls the downward movement of the movable valve shaft. One end of the movable valve shaft abuts against the return spring, and the other end is connected to the drain pan. An internal water channel assembly is provided. When an external force is applied to make the drain pan move vertically downward, the seal between the movable valve shaft and the water channel assembly is separated, and the nozzle discharges water; when the external force is removed, the movable valve shaft resets under the elastic action of the return spring. The water channel assembly is composed of a water outlet shaft and a water inlet shaft, one end is connected to the nozzle assembly, and the other end is connected to the water inlet source; at the same time, it is fixedly connected to the base. The nozzle assembly: consists of a nozzle, a nut, and is rotationally connected to the water outlet shaft, and can perform rotational movement relative to the water outlet assembly, and is fixed longitudinally by a locking nut. There are ejection ports distributed without direction at the top of the nozzle, and it can rotate automatically under the action of water flow. Bearings can also be added to make the rotation smoother. The drain pan: a water on / off switch, can be a bowl shape alone, or can be equipped with a pressure plate. When there is no pressure plate, there are irregular shapes inside the drain pan, with protrusions and depressions for placing the wash cup water. There is a circumferential movement range limiting and mating portion below the drain pan or in the hole, which mates with its mating part to limit the circumferential movement range or position, which can be the protruding portion 13 on the base, and the lower end of the drain pan has an arc-shaped groove 43 mating with the protruding portion. The base is a copper tube with an external thread, which is fixed on the use tabletop. The fixing described in this application is basically axial fixing, that is, after installation, it basically does not move axially.

[0042] The foregoing description has shown and described the preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the above teachings or the skills or knowledge in the relevant field. Any alterations and changes made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A cup washer, comprising a base for fixing and assembling to a table, characterized in that: Also includes: A water channel component is disposed in the base, the water channel component is provided with a channel for fluid to pass through, and the channel is provided with at least one valve port for controlling the opening and closing of the channel; a nozzle assembly, configured to communicate with the water outlet end of the waterway assembly; A drain pan is assembled on the base and / or the water channel assembly in a detachable manner, wherein the drain pan is configured to be movable to control the opening and closing of the valve port.

2. The cup washer according to claim 1, characterized in that: The drain pan is provided with a mounting hole in the middle of its main body, and the mounting hole is configured to form a hole-axis matching relationship with the water channel component. The drain pan is configured to be able to move axially along the water channel component to be mounted on or removed from the water channel component.

3. The cup washer according to claim 2, characterized in that: It also includes a movable valve shaft, which can be operably connected to the drain pan, and the drain pan is constructed to be able to control the axial and / or circumferential movement of the movable valve shaft relative to the waterway component to achieve the switching of the movable valve shaft between a state of closing the valve port and a state of opening the valve port.

4. The cup washer according to claim 3, characterized in that: The movable valve shaft can be sleeved on the outer periphery of the water channel assembly, a water passage is formed between the movable valve shaft and the water channel assembly, and the movable valve shaft can move axially relative to the water channel assembly; The water channel assembly can be fixed on the inner periphery of the base, the drain pan can be connected with the movable valve shaft, and the drain pan can drive the movable valve shaft to move axially relative to the water channel assembly after being compressed; the nozzle assembly can be placed above the drain pan; The water channel assembly is configured with a water inlet, a water outlet, a water inlet and a water outlet. When the movable valve shaft moves to a sealing fit position, water is blocked from flowing into the water outlet; when the movable valve shaft moves to a position out of sealing fit, the water channel assembly is connected to the water passage.

5. A cup washer according to claim 4, characterized in that: It also includes a reset spring, which can be connected with the movable valve shaft to reset the movable valve shaft after moving, so as to realize the switching of the water passage function of the water channel component from opening to closing.

6. A cup washer according to claim 5, characterized in that: A sealing ring is arranged on the outer periphery of the water channel component located at the water passage, and a convex ring is arranged on the inner periphery of the movable valve shaft; when the movable valve shaft is in the sealing position, the convex ring can cooperate with the sealing ring in a sealing manner to put the water passage in a water-cut state; A first sealing member is arranged between the outer periphery of the water inlet shaft below the water outlet and the inner periphery of the movable valve shaft, and a second sealing member is arranged between the outer periphery of the water outlet shaft above the water inlet and the inner periphery of the movable valve shaft.

7. The cup washer according to claim 1, characterized in that: The nozzle assembly includes a matching nozzle, a connecting piece and a bearing. The bearing is fixed to the upper end of the waterway assembly via a locking nut. The inner periphery of the connecting piece is matched and connected with the outer periphery of the bearing. The outer periphery of the connecting piece is connected to the nozzle. The nozzle is provided with a non-axially arranged injection port.

8. A cup washer according to any one of claims 1-5, 7-9, characterized in that: The drain pan can be sleeved on the outer circumference of the movable valve shaft. The drain pan is provided with an abutment portion, which can abut and cooperate with the upper end of the movable valve shaft so that the drain pan and the movable valve shaft can move axially downward synchronously. A first sealing ring is also provided between the outer circumference of the movable valve shaft and the drain pan.

9. A cup washer according to claim 8, characterized in that: It also includes a pressure plate that can move axially downward relative to the nozzle assembly. The pressure plate can be located at the periphery of the nozzle assembly, and the lower end of the pressure plate can abut against the drain pan and / or the movable valve shaft so that the pressure plate can drive the movable valve shaft to move axially downward.

10. A cup washer according to claim 9, characterized in that: The outer periphery of the base is also provided with an annular flange, the lower end surface of the annular flange can be received on a use table, and a second sealing ring is provided on the use table and the lower end surface of the annular flange.

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