Valve assembly and cleaning equipment

Abstract

The invention relates to a valve assembly and cleaning equipment. The valve assembly comprises a piston rod and a first sealing piece arranged below the piston rod. The first sealing piece is arranged below the piston rod, and the first annular protrusion and the second annular protrusion are arranged on the inner wall of the first sealing piece, so that the storage area is formed between the first annular protrusion and the second annular protrusion. When the box body is installed on the box base or the box body is detached and taken out of the box base, due to the fact that at least one of the first annular protrusion and the second annular protrusion is always in sealing fit with at least one of the piston rod and the connecting part, the sealing performance of the valve assembly can be guaranteed. Furthermore, a storage area is formed between the first annular protrusion and the second annular protrusion, so that in the dismounting process, even if liquid crosses over the first annular protrusion, the liquid can be collected in the storage area, the risk that the liquid flows to the box base is further reduced, and it is guaranteed that the box base is in a dry and comfortable state.

Description

Technical Field

[0001] The present application relates to the field of household appliance technology, and in particular to valve components and cleaning equipment. Background Art

[0002] Cleaning equipment has become a common household appliance in people's daily life, and it is mainly used for household cleaning and washing. Existing cleaning equipment (such as fabric cleaning machines, mopping machines, etc.) is equipped with a clean water tank for storing clean water and cleaning liquid, and the clean water tank is detachably mounted on the tank seat through an interface. Taking the fabric cleaning machine as an example, the water pump sprays the liquid in the clean water tank through the nozzle onto the fabric products to dissolve the stubborn stains on the fabric. In the related art, when taking the clean water tank, the liquid in the clean water tank is easy to remain on the tank seat of the cleaning equipment through the interface, affecting the user experience of the cleaning equipment. Summary of the invention

[0003] Based on this, it is necessary to provide a valve assembly to address the problem of liquid remaining on the box seat during the process of taking the box body of the existing cleaning equipment.

[0004] A valve assembly is used to detachably connect a box body to a connecting portion of a box seat; the valve assembly comprises: a piston rod; a first sealing member arranged below the piston rod; a first annular protrusion and a second annular protrusion are arranged on the inner wall of the first sealing member;

[0005] The second annular protrusion and the first annular protrusion are arranged at intervals along the axial direction of the first seal; during the installation and / or disassembly of the box body and the box seat, at least one of the first annular protrusion and the second annular protrusion always maintains a sealing fit with at least one of the piston rod and the connecting part; a storage area is formed between the first annular protrusion and the second annular protrusion.

[0006] In one embodiment, the connecting portion is configured with a central through hole and a first notch, the inlet of the central through hole is communicated with the first notch, and the liquid entering the first notch is led out through the central through hole.

[0007] In one embodiment, the second annular protrusion is disposed below the first annular protrusion, and the distance between the first annular protrusion and the second annular protrusion along the axial direction of the first seal is greater than the depth of the first notch along the axial direction of the first seal.

[0008] In one embodiment, the first notch comprises a plurality of first notches, and the plurality of first notches are arranged at intervals along the circumference of the connecting portion.

[0009] In one embodiment, the end of the second annular protrusion is bent radially inwardly and toward the first annular protrusion, and the end of the second annular protrusion is in a hook shape.

[0010] In one embodiment, a first space is enclosed between the first annular protrusion, the inner wall of the first sealing member and the piston rod;

[0011] The valve assembly further comprises a first shell, wherein the first shell is provided with a water flow channel for connecting the box body with the first space; a water flow mesh cover is arranged in the first shell, and the water flow mesh cover is used for blocking the water flow channel.

[0012] In one embodiment, the valve assembly further includes a second shell connected to the box body, the piston rod is located in an inner cavity enclosed by the first shell and the second shell, the first seal is connected to the inner wall of the second shell; and the first shell is clamped to the second shell.

[0013] In one embodiment, the valve assembly further includes a reset elastic member, and two ends of the reset elastic member are respectively abutted against the top wall of the first shell and the upper end of the piston rod.

[0014] In one embodiment, the valve assembly further comprises a second seal, which is an annular seal block sleeved on the piston rod; when the second seal moves up and down with the piston rod, the lower end of the second seal abuts against or separates from the extending portion of the second shell to achieve connection and disconnection between the clean water entering the inner cavity of the first shell and the first space.

[0015] In one embodiment, the second housing includes a first annular plate and a second annular plate spaced from outside to inside along the radial direction of the piston rod, and a supporting groove is formed between the first annular plate and the second annular plate, and the supporting groove is used to clamp the box body.

[0016] In one embodiment, the inner wall of the second shell is provided with a first limiting portion and a second limiting portion, and the first sealing element has two ends along its axial direction respectively clamped to the first limiting portion and the second limiting portion.

[0017] In one embodiment, one of the first limiting portion and the second limiting portion is a limiting groove, and the other is a limiting sheet.

[0018] In one of the embodiments, a mounting cavity is provided in the box seat, the mounting cavity accommodates the lower half of the second shell, and the connecting portion is protruded in the mounting cavity.

[0019] In one embodiment, the piston rod is provided with a first inclined surface, and the first sealing member is provided with a second inclined surface for slidingly cooperating with the first inclined surface; the first inclined surface and the second inclined surface have the same inclination angle.

[0020] In one embodiment, a third annular protrusion is disposed on the upper end surface of the first sealing member; and a fourth annular protrusion is disposed on the outer peripheral surface of the first sealing member.

[0021] A cleaning device comprises a box seat, a box body and the valve assembly as described above, wherein the box body is detachably connected to the box seat via the valve assembly.

[0022] In one embodiment, the cleaning device also includes: a base connected to the box seat; a water pump arranged in the base; the water inlet of the water pump is connected to the water outlet of the box body; a handle assembly connected to the box seat; the handle assembly is provided with a third liquid outlet; a heating assembly arranged in the base; the water outlet of the water pump and the third liquid outlet are both connected to the heating assembly.

[0023] In one embodiment, the handle assembly is provided with a suction port spaced apart from the third liquid outlet; the cleaning device also includes a negative pressure generator arranged in the base and a sewage tank connected to the tank seat; the negative pressure generator and the suction port are both connected to the sewage tank to recover the gas-liquid-solid mixture on the surface to be cleaned to the sewage tank through the suction port.

[0024] In one embodiment, a gas-liquid separator is arranged in the sewage tank of the cleaning equipment, and the gas-liquid separator includes: a main body, in which a first flow channel for supplying a gas-liquid-solid mixture to flow is arranged; the outlet of the first flow channel is connected to the sewage tank; a separation cover is arranged at the outlet of the first flow channel; the separation cover is provided with a drainage part and a gas outlet; the drainage part extends from the separation cover in the direction of the bottom of the sewage tank; the extending end of the drainage part is lower than the top of the gas outlet; the gas outlet is used to communicate with the negative pressure generator of the cleaning equipment; a liquid baffle is connected to the outer wall of the main body and is located below the drainage part.

[0025] In one embodiment, the guide portion includes a plurality of guide portions, and a gap between two adjacent guide portions forms the gas outlet.

[0026] In one of the embodiments, a diverter portion is disposed on the inner side wall of the separation cover; the diverter portion extends from the separation cover toward the bottom of the sewage tank.

[0027] In one of the embodiments, the extending end of the diverter portion corresponds to the top end of the gas outlet, and the diverter portion gradually widens from top to bottom in a direction away from the inner wall of the guide portion.

[0028] In one embodiment, the drainage portion extends downward and outward in an inclined manner; and / or the drainage portion gradually narrows in a direction from the drainage portion to the liquid baffle plate; and / or the liquid baffle plate extends downward and outward in an inclined manner from the drainage portion to the liquid baffle plate.

[0029] In one embodiment, the liquid baffle is located in the upper middle portion of the main body.

[0030] In one embodiment, the liquid baffle is located at 1 / 4-1 / 3 of the main body from top to bottom.

[0031] In one embodiment, the distance between the extended end of the drainage portion and the outer side wall of the main body is greater than the distance between the extended end of the liquid baffle and the outer side wall of the main body.

[0032] In one embodiment, the distance between the extended end of the drainage portion and the outer side wall of the main body is 1.1-1.2 times the distance between the extended end of the liquid baffle and the outer side wall of the main body.

[0033] In one embodiment, the top end of the gas outlet is lower than the outlet of the first flow channel; and / or the bottom end of the guide portion is lower than the outlet of the first flow channel.

[0034] In one of the embodiments, one of the separation cover and the main body is provided with a plug-in block, and the other is provided with a plug-in slot for plugging and cooperating with the plug-in block.

[0035] In one of the embodiments, a second flow channel spaced apart from the first flow channel is further provided inside the main body; an inlet of the second flow channel is connected to the gas outlet, and an outlet of the second flow channel is used to communicate with the negative pressure generator.

[0036] In one embodiment, the height of the inlet of the second flow channel is higher than the height of the outlet of the first flow channel; and / or the inlet of the second flow channel and the gas outlet are respectively located on two opposite sides of the main body.

[0037] In one embodiment, the flow direction of the gas-liquid-solid mixture in the first flow channel is opposite to the flow direction of the gas in the gas-liquid-solid mixture in the second flow channel.

[0038] In one embodiment, a filter screen is disposed in the second flow channel; and the outer diameter of the filter screen gradually increases in a direction from the inlet of the second flow channel to the outlet of the second flow channel.

[0039] In one embodiment, the box body includes a clean water tank, which has a clean water cavity and a first liquid filling port; the first liquid filling port is located at one end of the clean water tank away from the box seat mounting surface; the box body also includes a cleaning liquid tank, which is arranged in the clean water cavity; the cleaning liquid tank has a cleaning liquid cavity and a second liquid filling port; the second liquid filling port is located at one end of the cleaning liquid tank away from the box seat mounting surface.

[0040] In one embodiment, the second liquid injection port is located inside the first liquid injection port.

[0041] In one embodiment, the cleaning liquid tank extends upward from the bottom wall of the clean water chamber.

[0042] In one embodiment, a second liquid outlet of the cleaning liquid tank extends downward from the bottom wall of the clean water chamber, and an inner wall of the second liquid outlet forms a second liquid outlet of the cleaning liquid tank.

[0043] In one embodiment, the cleaning liquid chamber, the second liquid injection port and the second liquid outlet nozzle have the same aperture.

[0044] In one embodiment, the clean water tank has a first liquid outlet extending downward from the bottom wall of the clean water chamber, and the inner wall of the first liquid outlet forms a first liquid outlet of the clean water tank; the first liquid outlet and the second liquid outlet have the same aperture.

[0045] In one embodiment, the cleaning device further comprises two valve assemblies; the two valve assemblies are respectively connected to the first liquid outlet nozzle and the second liquid outlet nozzle to respectively place the first liquid outlet and the second liquid outlet in a conducting state or a blocked state.

[0046] In one of the embodiments, one of the clean water tank and the tank seat is provided with a first clamping block, and the other is provided with a first clamping groove for clamping and cooperating with the first clamping block.

[0047] In one of the embodiments, the clean water tank further includes a connecting cover, and the connecting cover is disposed on the clean water chamber; the connecting cover is configured with a through hole, and the through hole forms the first liquid filling port.

[0048] In one of the embodiments, the connecting cover is recessed downward to form a receiving groove, and a first sealing cover for sealing the first liquid filling port is located in the receiving groove; one of the groove wall of the receiving groove and the first sealing cover is provided with a second clamping block, and the other is provided with a second clamping groove for clamping with the second clamping block.

[0049] The valve assembly is provided with a first sealing member below the piston rod, and a first annular protrusion and a second annular protrusion are provided on the inner wall of the first sealing member, so that a storage area is formed between the first annular protrusion and the second annular protrusion. When the box body is installed on the box seat or the box body is removed from the box seat, since at least one of the first annular protrusion and the second annular protrusion is always in sealing cooperation with at least one of the piston rod and the connecting part, the sealing of the valve assembly can be ensured. Furthermore, a storage area is formed between the first annular protrusion and the second annular protrusion, so during the disassembly process, even if liquid passes over the first annular protrusion, the liquid will be collected in the storage area, further reducing the risk of liquid flowing to the box seat, ensuring that the box seat is in a relatively dry state. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A three-dimensional diagram of a cleaning device provided in one embodiment of the present application.

[0051] Figure 2 for Figure 1 A bottom view of the base in the cleaning device is shown.

[0052] Figure 3 for Figure 1 A cross-sectional view of the cleaning device shown.

[0053] Figure 4 for Figure 3 A cross-sectional view of a valve assembly in a cleaning device is shown in a conducting state.

[0054] Figure 5 for Figure 4 A partial enlarged view of point A in the cleaning device shown.

[0055] Figure 6 for Figure 5 A cross-sectional view of a valve assembly in a cleaning device is shown in a transition state.

[0056] Figure 7 for Figure 6 A cross-sectional view of a valve assembly in a cleaning device is shown in a disconnected state.

[0057] Figure 8 for Figure 3 A perspective view of a valve assembly in a cleaning device is shown.

[0058] Fig. 9A for Figure 8 A cross-sectional view of a valve assembly in a cleaning device is shown.

[0059] Fig. 9B A cross-sectional view of a valve assembly in a cleaning device provided in another embodiment of the present application.

[0060] Fig. 9C for Fig. 9B A partial enlarged view of point B in the valve assembly in the cleaning device shown.

[0061] Fig.10 for Figure 8 Exploded view of a valve assembly in a cleaning apparatus shown.

[0062] Fig.11 for Figure 8 An exploded cross-sectional view of a valve assembly in a cleaning apparatus is shown.

[0063] Fig.12 for Figure 5 A partial perspective view of a box seat in the cleaning device shown.

[0064] Fig.13 for Fig.12 A three-dimensional view of the connecting portion on the box seat in the cleaning device shown.

[0065] Fig.14A for Figure 3 A three-dimensional view of a gas-liquid separator in a cleaning device is shown.

[0066] Fig. 14B for Fig.14A Exploded view of the gas-liquid separator shown (filter screen hidden).

[0067] Fig.15 for Fig.14A A cross-sectional view of a gas-liquid separator in a cleaning device shown in a first section.

[0068] Fig.16 for Fig.14A A cross-sectional view of a gas-liquid separator in a cleaning device shown in a second cross section.

[0069] Fig.17A for Fig.14A A top view of the gas-liquid separator is shown.

[0070] Fig. 17B for Fig.17A A cross-sectional view of the CC section in the gas-liquid separator is shown.

[0071] Fig.18 for Fig.15 A three-dimensional view of the filter screen in the gas-liquid separator shown.

[0072] Fig.19 for Figure 1 A perspective view of a handle assembly in a cleaning device is shown.

[0073] Fig. 20 for Fig.19 A cross-sectional view of a handle assembly in a cleaning device is shown.

[0074] Fig.21 for Figure 3 A cross-sectional view of a clean water tank in a cleaning apparatus is shown.

[0075] Fig. 22 for Figure 3 Schematic diagram of the clean water tank in the cleaning device shown.

[0076] Figure numbers: 10, cleaning device; 100, valve assembly; 110, piston rod; 111, first inclined surface; 120, first sealing member; 121, first annular protrusion; 1211, second inclined surface; 122, second annular protrusion; 123, first space; 124, second space; 125, third clamping groove; 126, third annular protrusion; 127, fourth annular protrusion; 130, reset elastic member; 140, first shell; 141, water trough; 142, mounting column; 143, first plug-in block; 144, annular baffle; 150, second sealing member; 160, water screen; 170, first Second housing; 171, first limiting part; 1711, limiting groove; 172, second limiting part; 1721, limiting piece; 17211, clamping protrusion; 173, first annular plate; 174, second annular plate; 1741, first plug-in slot; 175, supporting slot; 180, third sealing member; 210, box seat; 211, connecting part; 2111, first notch; 2112, center through hole; 212, clamp; 213, installation cavity; 214, first clamping slot; 220, base; 230, air pump; 310, clean water tank; 311, clean water cavity; 3111, bottom wall; 3312, first injection 313, first liquid outlet; 3131, first liquid outlet; 314, first clamping block; 315, connecting cover; 3151, through hole; 3152, accommodating groove; 3153, second clamping block; 316, first blocking cover; 3161, second clamping groove; 3162, first handle; 320, sewage tank; 330, gas-liquid separator; 331, first flow channel; 332, second flow channel; 333, liquid baffle; 334, filter screen; 3341, convex strip; 3342, filter hole; 335, separation cover; 3351, diversion part; 3352, gas outlet; 3353, drainage part; 3354, Plug-in block; 3355, connecting cavity; 336, main body; 3361, plug-in slot; 340, second valve; 350, handle; 360, cleaning liquid tank; 361, cleaning liquid cavity; 362, second liquid filling port; 363, second liquid outlet nozzle; 3631, second liquid outlet; 364, second blocking cover; 410, water pump; 420, cleaning liquid pump; 500, handle assembly; 510, gripping part; 520, working part; 521, third liquid outlet; 522, suction port; 523, hair implantation pore; 530, suction channel; 540, clean water channel; 600, heating assembly; 700, negative pressure generator. DETAILED DESCRIPTION

[0077] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0078] In the description of the present application, it should be understood that if 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", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0079] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0080] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0081] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0082] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0083] See also Figures 3 to 5 As shown, a valve assembly 100 provided in an embodiment of the present application is used to detachably connect a box body to a connecting portion 211 of a box seat 210. The valve assembly 100 includes a piston rod 110 and a first sealing member 120 sleeved below the piston rod 110, and the first sealing member 120 is arranged below the piston rod 110. The inner wall of the first sealing member 120 is provided with a first annular protrusion 121 and a second annular protrusion 122, and the second annular protrusion 122 and the first annular protrusion 121 are arranged at intervals along the axial direction of the first sealing member 120; during the installation and removal process of the box body and the box seat 210, at least one of the first annular protrusion 121 and the second annular protrusion 122 always maintains a sealing fit with at least one of the piston rod 110 and the connecting portion 211; a storage area is formed between the first annular protrusion 121 and the second annular protrusion 122.

[0084] When the box body is installed on the box seat 210 or removed from the box seat 210, at least one of the first annular protrusion 121 and the second annular protrusion 122 is always in sealing cooperation with at least one of the piston rod 110 and the connecting portion 211, so the sealing of the valve assembly 100 can be ensured. Further, a storage area is formed between the first annular protrusion 121 and the second annular protrusion 122, so during the disassembly process, even if liquid passes over the first annular protrusion 121, the liquid will be collected in the storage area, further reducing the risk of liquid flowing to the box seat 210, ensuring that the box seat 210 is in a relatively dry state.

[0085] The box body may include a clean water tank 310 and a cleaning liquid tank 360. That is, the clean water tank 310 may be installed on the box seat 210 through the valve assembly 100, or the cleaning liquid tank 360 may be installed on the box seat 210 through the valve assembly 100. For ease of understanding, the following takes the clean water tank 310 in the box body installed on the box seat 210 through the valve assembly 100 as an example. It can be understood that in other embodiments, the clean water tank 310 may be replaced by the cleaning liquid tank 360, and the cleaning liquid tank 360 may be installed on the box seat 210 through the valve assembly 100.

[0086] In one embodiment, the connecting portion 211 is configured with a first notch 2111 that is in communication with the third liquid outlet 521 of the cleaning device 10. The valve assembly 100 includes an on state and an off state, which correspond to the on position and the off position of the piston rod 110, respectively. The inner wall of the first sealing member 120 is provided with a first annular protrusion 121; a first space 123 is enclosed between the first annular protrusion 121, the inner wall of the first sealing member 120 and the piston rod 110; the piston rod 110 can move along its own axial direction relative to the first sealing member 120 to switch between the on position and the off position. When the clean water tank 310 is completely placed on the tank seat 210, the piston rod 110 is lifted up by the connecting portion 211 and is in the on position, and the first annular protrusion 121 abuts against the outer peripheral wall of the connecting portion 211; and the first annular protrusion 121 moves to below the first notch 2111, so that the first space 123 is in communication with the first notch 2111, and the valve assembly 100 is in the on state. When the clean water tank 310 is completely removed from the tank seat 210, and the piston rod 110 moves axially to the disconnected position, the first annular protrusion 121 moves upward to pass over the first notch 2111 and abuts against the outer peripheral wall of the piston rod 110. The first annular protrusion 121 is used to separate the first space 123 and the first notch 2111, and the valve assembly 100 is in a disconnected state. It can be understood that the liquid stored in the clean water tank 310 can be clean water or cleaning liquid. When the liquid stored in the clean water tank 310 is cleaning liquid, the clean water tank 310 can be a cleaning liquid tank 360. The following description assumes that the liquid stored in the clean water tank 310 is clean water. Figure 3 and Figure 4 As shown, in an actual application scenario, when the clean water tank 310 is installed on the box seat 210, the clean water tank 310 moves in the direction of gravity. When the clean water tank 310 is taken out from the box seat 210, the clean water tank 310 moves in the opposite direction of the gravity direction, that is, the axial direction of the first sealing member 120 is parallel to the gravity direction. In other embodiments, the installation direction and the removal direction of the clean water tank may also have an angle with the gravity direction. In order to facilitate the understanding of the present application in conjunction with the accompanying drawings, the following text takes the installation and removal direction of the clean water tank 310 as an example, which is parallel to the gravity direction.

[0087] See also Figure 5As shown, in another embodiment, the second annular protrusion 122 is located below the first annular protrusion 121; the axial distance between the first annular protrusion 121 and the second annular protrusion 122 along the first sealing member 120 is greater than the axial depth of the first notch 2111 along the first sealing member 120. Therefore, unless the clean water tank 310 is removed from the tank seat 210 so that the first sealing member 120 is separated from the connecting portion 211, the second annular protrusion 122 always abuts against the outer peripheral wall of the connecting portion 211, regardless of whether the piston rod 110 is in the on position or the off position, and the second annular protrusion 122, the inner wall of the first sealing member 120 and the outer peripheral wall of the connecting portion 211 enclose a second space 124, that is, a storage area is formed between the first annular protrusion 121 and the second annular protrusion 122, and the first annular protrusion 121 separates the first space 123 from the second space 124. In this way, after the liquid flows into the first space 123, it will gather in the first space 123. Since the first annular protrusion 121 moves to the bottom of the first notch 2111, the liquid will flow in through the first notch 2111 and flow out through the third liquid outlet 521, thereby realizing the supply of clean water or cleaning liquid. Under the blocking effect of the first annular protrusion 121, the liquid will not enter the space below the first annular protrusion 121, that is, the second space 124. Therefore, under the double sealing effect of the first annular protrusion 121 and the second annular protrusion 122, the liquid will not be able to enter the installation cavity of the box seat 210, thereby improving the sealing effect. When it is necessary to remove the clean water tank 310 from the box seat 210, the clean water tank 310 drives the first sealing member 120 to move upward relative to the connecting portion 211 of the box seat 210. Figure 5 to Figure 6 As shown, when the first sealing member 120 moves up to the position where the first annular protrusion 121 abuts against the first notch 2111, the first space 123 and the second space 124 are connected through the first notch 2111. The movement position between the outer peripheral wall of the first annular protrusion 121 abutting against the bottom wall of the first notch 2111 and the outer peripheral wall abutting against the bottom of the piston rod 110 is defined as the transition position of the piston rod 110. Accordingly, the valve assembly 100 is in a transition state at this time. It can be understood that the transition state is a position state between the on state and the off state of the valve assembly 100. In this transition state, the second annular protrusion 122 still always abuts against the outer peripheral wall of the connecting portion 211, which plays a role in preventing the liquid from flowing to the box seat 210.

[0088] like Figure 6 to Figure 7As shown, when the first sealing member 120 moves upward and the piston rod 110 moves downward to the disconnected position, that is, the piston rod 110 is completely disconnected from the connecting portion 211, the first annular protrusion 121 abuts against the outer peripheral wall of the piston rod 110, so that the first annular protrusion 121 isolates the space above the first annular protrusion 121 from the space below, that is, the first annular protrusion 121 separates the first space 123 from the first notch 2111, and the liquid cannot pass through the first space 123 and enter the first notch 2111, and the valve assembly 100 is in a disconnected state. It can be understood that during the installation and / or removal process of the clean water tank 310 and the tank seat 210, at least one of the first annular protrusion 121 and the second annular protrusion 122 always maintains a sealing fit with at least one of the piston rod 110 and the connecting portion 211. Experiments have shown that after the clean water tank 310 is removed from the tank seat 210, only a small amount of liquid is attached to the inner wall of the first sealing member 120. Due to the tension of the liquid itself, the small amount of liquid will not drip into the installation cavity of the tank seat 210, that is, no liquid will remain in the installation cavity, and the tank seat 210 is in a relatively dry state, thereby improving the user experience. Among them, the first sealing member 120 can be a cylindrical structure.

[0089] like FIG. 9A to FIG. 11 As shown, in a specific embodiment, the bottom periphery of the piston rod 110 is provided with a first inclined surface 111, and the first sealing member 120 is provided with a second inclined surface 1211 for slidingly cooperating with the first inclined surface 111; the first inclined surface 111 and the second inclined surface 1211 have the same inclination angle. In this way, when the piston rod 110 moves along its own axial direction relative to the first sealing member 120, the smoothness of the movement of the piston rod 110 relative to the first sealing member 120 is improved through the sliding cooperation of the first inclined surface 111 and the second inclined surface 1211; and the contact area between the piston rod 110 and the first annular protrusion 121 or the second annular protrusion 122 is reduced, thereby reducing the movement resistance of the piston rod 110. Among them, the cross section of the first annular protrusion 121 along the gravity direction can be a triangle. The shape of the second annular protrusion 122 can be consistent with the first annular protrusion 121.

[0090] like Fig. 9B and Fig. 9C As shown, in another specific embodiment, the second annular protrusion 122 can also be used as follows Fig. 9CThe shape shown, that is, the end of the second annular protrusion 122 is radially inward and bent toward the first annular protrusion 121, and the end of the second annular protrusion 122 is in a hook shape. In this way, the storage function of the storage area formed by the second space 124 is improved. Specifically, when taking the box body, the hook shape can play a role in storing more liquid and prevent the liquid from flowing out; when the box body is installed on the box seat 210, the hook-shaped end of the second annular protrusion 122 is squeezed by the connecting portion 211, and the second annular protrusion 122 is deformed and bent toward the first annular protrusion 121, so that while maintaining the sealing cooperation with the connecting portion 211, the liquid that may remain in the second space 123 will be squeezed back to the first space and / or the first notch 2111, which further reduces the risk of insufficient water storage space in the second space due to multiple plugging and unplugging, avoids the possibility of liquid remaining in the box seat 210, and keeps the surface of the box seat 210 dry.

[0091] like Figures 5 to 7 As shown, in one embodiment, the valve assembly 100 further includes a reset elastic member 130, a second housing 170 connected to the clean water tank 310, and a first housing 140 connected to the second housing 170, and the aforementioned first sealing member 120 is fixed to the inner wall of the second housing 170. The piston rod 110 is defined in the inner cavity surrounded by the first housing 140 and the second housing 170, and the two ends of the reset elastic member 130 are respectively abutted against the top wall of the first housing 140 and the upper end of the piston rod 110; the reset elastic member 130 is used to drive the piston rod 110 to reset from the conducting position to the disconnecting position when the external force applied to the piston rod 110 by the connecting portion 211 is removed. It can be understood that the clean water tank 310 has a water outlet, and the inner wall of the water outlet forms a water outlet channel for clean water to flow, and the outer wall of the water outlet is provided with an external thread so as to be connected with the internal thread of the inner wall of the second housing 170. The first housing 140 is fixedly connected to the second housing 170.

[0092] like Figures 5 to 7 as well as Fig.10As shown, it can be understood that the first shell 140 has a cavity, and part of the piston rod 110 and the reset elastic member 130 are both accommodated in the cavity. One end of the reset elastic member 130 is fixed by the first shell 140. Furthermore, a mounting column 142 is provided on the inner surface of the upper end of the first shell 140, and one end of the reset elastic member 130 can be sleeved on the mounting column 142 to enhance the limiting effect of the reset elastic member 130. In the process of installing the clean water tank 310, that is, the clean water tank 310 moves downward, the piston rod 110 gradually approaches the connecting portion 211 until it abuts against the connecting portion 211. As the clean water tank 310 continues to move downward, the connecting portion 211 will give the piston rod 110 an upward force until the piston rod 110 moves up to the conduction position, and in this process, the elastic member is compressed. When the clean water tank 310 is taken out from the tank seat 210, the clean water tank 310 and the first sealing member 120 gradually move upward, so the piston rod 110 will move downward under the elastic force of the reset elastic member 130 until it is in the aforementioned disconnected position. By setting the reset elastic member 130, the piston rod 110 can be automatically reset. Among them, the upper end of the piston rod 110 is provided with a receiving groove for accommodating the reset elastic member 130, further improving the limiting effect of the reset elastic member 130. The reset elastic member 130 can be a spring. It can be understood that the setting positions of the mounting column and the receiving groove can also be interchanged, that is, the upper inner surface of the first shell is provided with a receiving groove for accommodating the reset elastic member, and the upper end of the piston rod is provided with a mounting column for sleeve-mounting the reset elastic member.

[0093] like Figures 7 to 10 As shown, in an optional embodiment, a second seal 150 is connected between the second housing 170 and the piston rod 110. Specifically, the second seal 150 is an annular sealing block, the inner wall of which is sleeved on the piston rod 110. Among them, an annular groove is provided on the piston rod 110 for sleeve-fitting the second seal 150 to improve the sleeve-fitting effect. The lower end of the second seal 150 can abut against the protruding portion of the second housing 170, wherein the protruding portion of the second housing 170 is the part of the second housing 170 that protrudes into the inner cavity of the first housing 140. When the second seal 150 moves up and down with the piston rod 110, the lower end of the second seal 150 abuts or separates from the protruding portion of the second housing 170 to achieve the conduction and disconnection of the clean water entering the inner cavity of the first housing 140 and the first space 123.

[0094] like FIG. 9A to FIG. 10As shown, in some embodiments, the first housing 140 is configured with a water channel 141 for communicating the clean water tank 310 with the first space 123. In this way, when the valve assembly 100 is installed on the clean water tank 310, the clean water in the clean water tank 310 can enter the first housing 140 through the water channel 141. When the second sealing member 150 is released from contact with the second housing 170, the clean water in the first housing 140 can enter the first space 123 between the piston rod 110 and the first sealing member 120. When the piston rod 110 is in the conducting position, the clean water can enter the first notch 2111 from the first space 123, and finally reach the third liquid outlet 521 to be sprayed out, so as to realize the supply of clean water and clean the surface to be cleaned.

[0095] like Figures 8 to 10 As shown, in another embodiment, a water-passing screen 160 is provided in the first housing 140, and the water-passing screen 160 is used to block the water-passing groove 141. In this way, the clean water in the clean water tank 310 will pass through the water-passing groove 141 and the water-passing screen 160 and enter the first housing 140. By providing the water-passing screen 160, a certain filtering effect is played, and the possibility of impurities in the clean water entering the first sealing member 120 is reduced, the risk of clogging of the valve assembly 100 is reduced, and the replacement frequency and replacement cost are reduced. Specifically, as Figures 3 to 5 As shown, the second housing 170 includes a first annular plate 173 and a second annular plate 174 spaced from outside to inside along the radial direction of the piston rod 110, and a support groove 175 is formed between the first annular plate 173 and the second annular plate 174 for clamping the clean water tank 310. Furthermore, the inner diameter of the first annular plate 173 is adapted to the outer diameter of the clean water tank 310, thereby improving the limiting effect on the clean water tank 310. Specifically, the inner wall of the first annular plate 173 forms an internal thread, which is screwed together with the external thread on the clean water tank 310. FIG. 9A to FIG. 11 As shown, a third sealing member 180 is also provided in the support groove 175, and the clean water tank 310 can be crimped on the third sealing member 180. By providing the third sealing member 180, the clean water tank 310 and the second housing 170 are prevented from directly contacting each other and causing wear, thereby improving the service life of both. On the other hand, the sealing performance of the clean water tank 310 and the second housing 170 can also be improved. One of the second annular plate 174 and the first housing 140 is respectively provided with a first plug-in block 143 and a first plug-in slot 1741 for plugging and matching with the first plug-in block 143. For example, the first plug-in slot 1741 is provided on the second annular plate 174, and the first plug-in block 143 is provided on the first housing 140. Of course, the setting positions of the first plug-in block and the first plug-in slot can be interchanged. Furthermore, the outer wall of the first housing 140 is provided with an annular baffle 144, and the annular baffle 144 is overlapped on the second annular plate 174.

[0096] like FIG. 9A to FIG. 11As shown, in a specific embodiment, the inner wall of the second housing 170 is provided with a first limiting portion 171 and a second limiting portion 172, and the opposite ends of the first sealing member 120 along the gravity direction are respectively clamped to the first limiting portion 171 and the second limiting portion 172. Through this arrangement, the installation effect of the first sealing member 120 is improved, the possibility of the first sealing member 120 slipping is reduced, and the reliability of the conduction or disconnection of the valve assembly 100 is ensured.

[0097] like Fig. 9A and Fig.11 As shown, in one embodiment, one of the first limiting portion 171 and the second limiting portion 172 is a limiting groove 1711, and the other is a limiting sheet 1721. Specifically, the upper end of the first sealing member 120 abuts against the groove wall of the limiting groove 1721, and the lower end is supported by the limiting sheet 1721. Furthermore, a clamping protrusion 17211 is provided on the limiting sheet 1721, and a third clamping groove 125 for clamping with the clamping protrusion 17211 is provided on the first sealing member 120. In this way, the movement of the first sealing member 120 in the axial direction and the radial direction is limited, thereby improving the matching reliability of the first annular protrusion 121 or the second annular protrusion 122 and the piston rod 110.

[0098] Furthermore, if FIG. 9A to FIG. 10 As shown, the upper end surface of the first sealing member 120 is provided with a third annular protrusion 126, and the outer peripheral surface of the first sealing member 120 is provided with a fourth annular protrusion 127. The third annular protrusion 126 and the fourth annular protrusion 127 are both used for sealing connection with the second shell 170, playing a sealing role, so that when the liquid flows into the first sealing member 120, it cannot flow from the gap between the second shell 170 and the first sealing member 120 to the box seat 210, thereby ensuring the dry performance of the box seat 210.

[0099] Furthermore, if Figures 1 to 3 As shown, an embodiment of the present application also provides a cleaning device 10, including a box seat 210, a clean water tank 310 and a valve assembly 100 of any of the above embodiments, wherein the above-mentioned connecting portion 211 is provided in the mounting cavity of the box seat 210, and the above-mentioned first notch 2111 connected to the third liquid outlet 521 is provided on the connecting portion 211. The clean water tank 310 is detachably connected to the box seat 210 through the valve assembly 100. Among them, clean water or cleaning liquid can be stored in the clean water tank 310. Taking the cleaning device 10 as a fabric washing machine as an example, the valve assembly 100 connects the clean water tank 310 and the third liquid outlet 521 to spray the liquid in the clean water tank 310 through the third liquid outlet 521 onto the fabric products to dissolve the stubborn stains on the fabric. Of course, in other application scenarios, the cleaning device can also be other cleaning devices with a detachable clean water tank.

[0100] like Figure 5 , Figure 12 to Figure 13 As shown, in one embodiment, a mounting cavity 213 is provided in the box seat 210, and the mounting cavity 213 accommodates the lower half of the second shell 170, and the connecting portion 211 is protruded in the mounting cavity 213. A plurality of first notches 2111 are configured on the connecting portion 211, and the plurality of first notches 2111 are arranged at intervals along the circumference of the connecting portion 211. In this way, the clean water entering the first space 123 can enter the first notch 2111 from multiple positions respectively, ensuring the injection amount and injection speed of the clean water and improving the cleaning effect. Further, the connecting portion 211 is also configured with a central through hole 2112, the inlet of the central through hole 2112 is connected to the first notch 2111, and the outlet of the central through hole 2112 is connected to the third liquid outlet 521, and the liquid entering the first notch 2111 is led out through the central through hole 2112.

[0101] like Figures 1 to 3 as well as Fig.19 As shown, in one embodiment, the cleaning device 10 further includes a base 220, a water pump 410, a handle assembly 500 and a heating assembly 600. The base 220 is connected to the box seat 210; the water pump 410 is arranged in the base 220, and the water inlet of the water pump 410 is connected to the water outlet of the clean water tank 310; the handle assembly 500 is connected to the box seat 210, and the third liquid outlet 521 is arranged in the handle assembly 500; the heating assembly 600 is arranged in the base 220; the water outlet of the water pump 410 and the third liquid outlet 521 are both connected to the heating assembly 600, so as to send the liquid in the clean water tank 310 into the heating assembly 600, and spray the liquid or steam heated by the heating assembly 600 to the surface to be cleaned through the third liquid outlet 521. Among them, the box seat 210 and the base 220 can be connected in an integrated manner, or in a detachable manner such as plug-in. The clean water tank 310 can be plugged and matched with the box seat 210, so that it is convenient to take and place the clean water tank 310. A clamp 212 can be provided on the box seat 210 to fix the handle assembly 500. The cloth art product can be a sofa, a carpet, a curtain or a leather seat.

[0102] Understandably, if Figures 2 to 3 as well as Figures 19 to 20 As shown, a connecting hose is provided between the water outlet of the clean water tank 310 and the water inlet of the water pump 410, and between the water outlet of the water pump 410 and the heating component 600 to connect the two, and a clean water channel 540 such as a connecting hose is provided between the heating component 600 and the third liquid outlet 521 on the handle to spray clean water from the third liquid outlet 521. The heating component 600 can be a boiler, a steam generator or an electric heating tube. Furthermore, a flow meter can be provided in the clean water tank 310 to obtain the water output. Figure 3As shown, in some other embodiments, an air pump 230 is further provided in the box seat 210. The air pump 230 blows air into the clean water channel 540, such as a connecting hose connecting the water pump 410 and the third liquid outlet 521, to blow out the liquid remaining in the pipeline, thereby reducing the possibility of bacteria breeding in the pipeline and generating safety hazards.

[0103] like Figure 1 , Figures 19 to 20 As shown, in one embodiment, the handle assembly 500 includes a grip portion 510 and a working portion 520 connected to the grip portion 510; the grip portion 510 can be detachably connected to the box seat 210 through the clamp 212; the third liquid outlet 521 is provided on the working portion 520. Specifically, the grip portion 510 is a columnar structure, which is convenient for the operator to hold. The internal structure of the grip portion 510 is provided with a clean water channel 540 for clean water to flow through. Among them, the grip portion 510 is provided with a water spraying and jetting button, a handle fixing button and a handle opening button. By selecting the working mode corresponding to the cleaning device 10 and pressing the water spraying and jetting button, the third liquid outlet 521 can spray corresponding water or steam. For example, when the hot water mode is selected, the third liquid outlet 521 sprays hot water. When the steam mode is selected, the third liquid outlet 521 sprays steam. By pressing the handle opening button, the negative pressure generator 700 is activated to perform the suction action. By breaking the clamp 212 apart, it is easy to take the handle assembly 500 to a suitable position and angle. The working portion 520 can be a brush head, that is, the working portion 520 is used to contact with the fabric products. Fig.19 As shown, in some embodiments, the working portion 520 is further provided with a hair planting hole 523, and the hair planting hole 523 is used to install a brush. In this way, the dissolved stains can be scrubbed by the brush to improve the cleaning effect.

[0104] like Figure 2 , Figure 3 as well as Figures 19 to 20 As shown, in one embodiment, the handle assembly 500 is provided with a suction port 522 spaced apart from the third liquid outlet 521; the cleaning device 10 further includes a negative pressure generator 700 disposed in the base 220 and a sewage tank 320 connected to the tank seat 210; the negative pressure generator 700 and the suction port 522 are both connected to the sewage tank 320 to recover the gas-liquid-solid mixture on the surface to be cleaned to the sewage tank 320 through the suction port 522. Specifically, as Figures 19 to 20As shown, a suction channel 530 is provided between the suction port 522 and the sewage tank 320. When the negative pressure generator 700 is working, negative pressure is formed in the sewage tank 320, so that the suction port 522 generates suction to absorb dirt from the fabric products; the absorbed dirt enters the sewage tank 320 through the suction channel 530, thereby removing the dirt on the fabric products. The sewage tank 320 can be plugged into the tank seat 210, which is convenient for taking and placing to clean the sewage tank 320. The negative pressure generator 700 can be specifically a motor. Figure 1 and Figure 3 As shown, in a specific embodiment, the clean water tank 310 and the sewage tank 320 are symmetrically placed on the tank base 210, and the tank covers of the sewage tank 320 and the clean water tank 310 are both provided with switches. By pressing the switches, the tank covers can be opened, making it easy to add water to the clean water tank 310 and pour water out of the sewage tank 320.

[0105] like Figure 3 , FIG. 14A to FIG. 15 As shown, in one embodiment, a gas-liquid separator 330 is disposed in the sewage tank 320, and the gas-liquid separator 330 has a first flow channel 331 for the flow of the gas-liquid-solid mixture and a second flow channel 332 for the flow of the gas in the gas-liquid-solid mixture. The inlet of the first flow channel 331 is connected to the suction port 522, and the outlet of the first flow channel 331 is connected to the sewage tank 320, so that the liquid and solid in the gas-liquid-solid mixture, that is, the sewage, can enter the sewage tank 320 through the first flow channel 331. The inlet of the second flow channel 332 is connected to the outlet of the first flow channel 331; the outlet of the second flow channel 332 is connected to the air inlet of the negative pressure generator 700, so that the gas in the gas-liquid-solid mixture can enter the air inlet of the negative pressure generator 700 through the first flow channel 331 and the second flow channel 332 in sequence. Among them, the height of the inlet of the second flow channel 332 is higher than the height of the outlet of the first flow channel 331. Specifically, as Figure 3 , FIG. 14A to FIG. 15 As shown, the cleaning device 10 will suck in the gas-liquid-solid mixture at the same time during the cleaning process. By setting the first flow channel 331 and the second flow channel 332 at intervals, and the height of the inlet of the second flow channel 332 is higher than the height of the outlet of the first flow channel 331, the sewage in the gas-liquid-solid mixture will automatically fall to the sewage tank 320 under the action of gravity after flowing out of the first flow channel 331. Under the action of the negative pressure generator 700, the gas will flow out of the first flow channel 331, enter the second flow channel 332, and finally be sucked into the air inlet of the negative pressure generator 700. In this way, the sewage and the gas are separated, the possibility of the sucked sewage entering the negative pressure generator 700 is reduced, and the service life of the negative pressure generator 700 is extended. At the same time, it also avoids the problem of sewage entering the negative pressure generator 700, causing water to spray outward at its vent.

[0106] like FIG. 14A to FIG. 15As shown, in a specific embodiment, the flow direction of the gas-liquid-solid mixture in the first flow channel 331 is opposite to the flow direction of the gas in the second flow channel 332. That is, the first flow channel 331 and the second flow channel 332 are spaced apart in the horizontal direction. By arranging the two side by side, the space occupied by the gas-liquid separator 330 in the direction of gravity can be saved, making the cleaning device 10 more compact as a whole. As shown in the figure, the flow direction of the gas-liquid-solid mixture in the first flow channel 331 is indicated by a solid arrow, and the flow direction of the gas in the gas-liquid-solid mixture in the second flow channel 332 is indicated by a dotted arrow. In other embodiments, the first flow channel 331 and the second flow channel 332 can also be arranged up and down or inside and outside. In this way, under the action of gravity, sewage will not enter the second flow channel 332 from the first flow channel 331, thereby improving the gas-liquid separation effect.

[0107] like FIG. 14A to FIG. 18 As shown, the gas-liquid separator 330 includes a main body 336, a separation cover 335 and a liquid baffle 333. The main body 336 is provided with a first flow channel 331 for supplying the gas-liquid-solid mixture; the outlet of the first flow channel 331 is connected to the sewage tank 320; the separation cover 335 is provided at the outlet of the first flow channel 331; the separation cover 335 is provided with a drainage portion 3353 and a gas outlet 3352; the drainage portion 3353 extends from top to bottom; the extension end of the drainage portion 3353 is lower than the top of the gas outlet 3352; the gas outlet 3352 is used to communicate with the negative pressure generator of the cleaning device 10; the liquid baffle 333 is connected to the outer wall of the main body 336 and is located below the drainage portion 3353. Among them, the inlet of the first flow channel 331 is connected to the suction port of the cleaning device 10. When the gas-liquid-solid mixture enters from the first flow channel 331, it flows out from the outlet of the first flow channel 331. Since a separation cover 335 is provided at the outlet of the first flow channel 331, the gas-liquid-solid mixture will flow along the inner wall of the separation cover 335 until the liquid contacts the drainage portion 3353. Due to the wall-attaching characteristics of the liquid, the liquid is decelerated and concentrated together, and will follow the direction of the air flow and flow downward along the drainage portion 3353 under the action of its own gravity. At the same time, since the top of the gas outlet 3352 is higher than the extended end of the drainage portion 3353, under the action of the negative pressure generator, the gas and liquid are separated at the gas outlet 3352, and the gas enters the air duct of the negative pressure generator. After the liquid flowing downward along the drainage portion 3353 reaches the liquid baffle plate 333 below the drainage portion 3353, the liquid slowly flows downward to the bottom of the sewage tank. By setting the liquid baffle plate 333, the impact force of the liquid directly rushing to the bottom of the sewage tank can be reduced, avoiding the possibility of splashing water generated by the impact being sucked into the air duct of the negative pressure generator. While ensuring the gas-liquid separation efficiency, the risk of liquid entering the negative pressure generator is reduced, thereby increasing the service life of the negative pressure generator and the reliability of the cleaning device 10.

[0108] like FIG. 14A to FIG. 18As shown, the separation cover 335 may be an arc-shaped structure, and the cover is disposed at the outlet of the first flow channel 331. Figures 15 to 17B As shown, the separation cover 335 has a connecting cavity 3355 connected to the first flow channel 331, the connecting cavity 3355 is located above the first flow channel 331, the connecting cavity 3355 is approximately parabolic, and the opening of the connecting cavity 3355 faces the sewage tank. In this way, after the fluid coming out of the outlet of the first flow channel 331 hits the cavity wall of the connecting cavity 3355, it will adhere to the cavity wall, and flow downward along the drainage part 3353 under the action of gravity, and the gas enters the air duct of the negative pressure generator through the gas outlet 3352. Through this arrangement, the separation cover 335 can guide the flow direction of the gas-liquid-solid mixture, so that after the sewage flows out of the first flow channel 331, it will flow downward along the arc direction of the separation cover 335 and the wall surface of the drainage part 3353, and fall into the sewage tank under the action of gravity, and will not bypass the separation cover 335 to enter the gas flow channel, further improving the gas-liquid separation effect.

[0109] In one embodiment, a plurality of diverter portions 3351 corresponding to the gas outlet 3352 are provided on the inner wall of the drainage portion 3353, and the diverter portions 3351 extend from top to bottom, and the extended end of the diverter portion 3351 corresponds to the top of the gas outlet 3352. The plurality of diverter portions 3351 separate the drainage portion 3353, so that the gas-liquid-solid mixture reaching the drainage portion 3353 is diverted, which is more conducive to flow, so that the gas-liquid-solid mixture is guided by the drainage portion 3353 more quickly and orderly. This arrangement not only improves the separation effect of the gas-liquid separator 330 on the gas-liquid-solid mixture, but also makes the structure of the gas-liquid separator 330 simpler, and is not easy to accumulate dirt, which is convenient for cleaning.

[0110] In one embodiment, the drainage portion 3353 extends downward and outwardly. In this way, the liquid can move downward under the action of gravity, and can also adhere to the inner wall of the drainage portion 3353 under the pressure of the gas to accelerate the downward movement. In one embodiment, the diverter portion 3351 gradually widens from top to bottom in the direction away from the inner wall of the drainage portion 3353, presenting a triangular cross-sectional shape. This arrangement reduces the turbulence of the gas-liquid-solid mixture reaching the top of the diverter portion 3351.

[0111] In one embodiment, the drainage portion 3353 gradually narrows from the direction where the drainage portion 3353 points to the liquid baffle 333, that is, the drainage portion 3353 is approximately V-shaped, so that the liquid can gradually converge during the downward flow, accelerating the downward speed of the water flow. Further, the gas outlet 3352 is in an inverted V shape, which matches the drainage portion 3353.

[0112] In one embodiment, the self-draining portion 3353 points to the direction of the liquid baffle plate 333, and the liquid baffle plate 333 extends downward and outward in an inclined manner. Through this arrangement, the liquid baffle plate 333 can further play a role in draining the liquid, so that the liquid slowly flows downward along the inclined wall under the action of gravity, reducing the impact force of the liquid falling into the sewage tank, and avoiding the possibility of splashing water generated by the impact being sucked into the air duct of the negative pressure generator.

[0113] In one embodiment, the liquid baffle plate 333 is located in the middle and upper part of the main body 336, and relative to the bottom wall of the sewage tank 320, the liquid baffle plate 333 is closer to the gas-liquid separator 330. Further, the liquid baffle plate 333 is located at the 1 / 4-1 / 3 position from top to bottom of the main body 336. The distance between the extended end of the drainage portion 3353 and the outer side wall of the main body 336 is slightly greater than the distance between the extended end of the liquid baffle plate 333 and the outer side wall of the main body 336. Further, the distance between the extended end of the drainage portion 3353 and the outer side wall of the main body 336 is 1.1-1.2 times the distance between the extended end of the liquid baffle plate 333 and the outer side wall of the main body 336. Through this arrangement, it is possible to prevent the dirty liquid flowing to the upper surface of the liquid baffle plate 333 from splashing back to the separation cover 335, and it is also possible to effectively buffer the liquid and reduce the possibility of liquid splashing in the sewage tank.

[0114] In one embodiment, the top of the gas outlet 3352 is lower than the outlet of the first flow channel 331. Correspondingly, the bottom of the diverter 3351 is lower than the outlet of the first flow channel 331. This arrangement reduces the possibility of the gas-liquid-solid mixture flowing out of the first flow channel 331 flowing back into the first flow channel 331. The liquid can adhere to the inner wall surface of the diverter 3351, effectively gather the liquid in the diverter 3351, and then separate the gas and liquid, thereby effectively improving the gas-liquid separation efficiency.

[0115] In one embodiment, one of the separation cover 335 and the main body 336 is provided with a plug-in block 3354, and the other is provided with a plug-in slot 3361 for plugging with the plug-in block 3354. Specifically, the separation cover 335 is provided with the plug-in block 3354, and the main body 336 is provided with the plug-in slot 3361, and the connection between the separation cover 335 and the main body 336 is achieved through plug-in cooperation. In other embodiments, the setting positions of the plug-in block 3354 and the plug-in slot 3361 can be interchanged, that is, the plug-in block 3354 is provided on the main body 336, and the plug-in slot 3361 is provided on the separation cover 335.

[0116] In one embodiment, a filter screen 334 is provided in the second flow channel 332; the outer diameter of the filter screen 334 gradually increases from the inlet of the second flow channel 332 to the outlet of the second flow channel 332. By providing the filter screen 334, the dirt particles in the gas are filtered to reduce the possibility of dirt entering the negative pressure generator and causing damage. Specifically, the filter screen 334 covers the inner wall of the second flow channel 332, and the diameter of the filter screen 334 gradually increases from top to bottom, which is approximately a conical structure. It can be understood that a plurality of filter holes 3342 are provided on the side wall of the filter screen 334 to increase the filtering area. In one embodiment, the outer wall of the filter screen 334 is provided with a convex strip 3341, and the convex strip 3341 is used to abut against the inner wall of the second flow channel 332. In this way, the filter screen 334 is limited and fixed. By providing the filter screen 334, the dirt in the inhaled gas is filtered to reduce the possibility of dirt entering the negative pressure generator and causing damage.

[0117] like Fig.15 As shown, in one embodiment, the inlet of the second flow channel 332 and the gas outlet 3352 are respectively located on opposite sides of the main body 336. Through this arrangement, the flow path of the gas is extended, and the possibility of liquid bypassing the gas outlet 3352 and entering the second flow channel 332 is further reduced, thereby improving the gas-liquid separation effect and ensuring the service life of the negative pressure generator.

[0118] like Figures 1 to 3 , Fig.19 and Fig. 20 As shown, in some embodiments, the suction pipe can achieve self-cleaning. Specifically, by replacing the working part 520, i.e., the brush head, on the handle assembly 500, and installing it. The self-cleaning nozzle is a cover structure with an air inlet. After being installed on the handle assembly 500, the cover is arranged on the suction port 522 and the third liquid outlet 521 of the self-cleaning nozzle. When the self-cleaning function needs to be performed, the clean water is pumped out by the water pump 410 through the clean water channel 540 and sprayed out through the third liquid outlet 521. Under the suction force of the negative pressure generator 700, the clean water will flow along the cover to the suction port 522, and then flow back into the suction channel 530. Subsequently, the clean water will be sucked into the sewage tank 320 together with the dirt attached to the suction channel 530. In this way, while the suction channel 530 is being cleaned, the clean water can also be recovered, which is more convenient to use.

[0119] like Figure 2 and Figure 3As shown, in one embodiment, the cleaning device 10 further includes a cleaning liquid pump 420 and a cleaning liquid tank 360; a second valve 340 is provided between the water outlet of the cleaning liquid tank 360 and the water inlet of the cleaning liquid pump 420 for connecting or disconnecting the two; the water outlet of the cleaning liquid pump 420 is connected to the water outlet of the heating component 600 downstream of the water pump 410. Specifically, the cleaning liquid in the cleaning liquid tank 360 is pumped into the clean water channel 540 by the cleaning liquid pump 420 and mixed with clean water, and then the clean water mixed with the cleaning liquid is sprayed onto the surface dirt of the fabric products, and then the liquid sprayed in the area and the residual dirt are sucked out through the suction port 522, so as to achieve the purpose of cleaning the fabric products. By the second valve 340 being in the on state or the off state, the cleaning liquid pump 420 pumps the cleaning liquid into the clean water channel 540, or stops pumping, and the control is simpler and more reliable. The structure of the second valve 340 can refer to the valve assembly 100 mentioned above. Of course, in other embodiments, the second valve 340 may also be a solenoid valve, etc. Further, the cleaning liquid tank 360 may be disposed in the clean water tank 310. By disposing the cleaning liquid tank 360 in the clean water cavity 311 of the clean water tank 310, on the one hand, the space occupied by the two can be reduced, making the layout of the cleaning device more compact; on the other hand, assembly and disassembly are also more convenient. When the clean water tank 310 and the cleaning liquid tank 360 need to be disassembled, the clean water tank 310 can be directly disassembled to complete the disassembly operation of the two.

[0120] like Figures 3 to 5 as well as Fig.21 As shown, in another embodiment, the first liquid filling port 3312 is located at the end of the clean water tank 310 away from the mounting surface of the tank seat 210; the second liquid filling port 362 is located at the end of the cleaning liquid tank 360 away from the mounting surface of the tank seat 210. Since the first liquid filling port 3312 of the clean water tank 310 and the second liquid filling port 362 of the cleaning liquid tank 360 are respectively located at the ends of the clean water tank 310 and the cleaning liquid tank 360 away from the mounting surface of the tank seat 210, that is, the first liquid filling port 3312 and the second liquid filling port 362 are both facing upward, there is no need to remove the clean water tank 310 or the cleaning liquid tank 360 when adding clean water or cleaning liquid, and the liquid filling operation is simpler and more convenient. Figures 3 to 5 as well as Fig.21 As shown, in a specific embodiment, the second liquid filling port 362 is located inside the first liquid filling port 3312. That is to say, the first liquid filling port 3312 and the second liquid filling port 362 are similar to a concentric arrangement, so that filling is more convenient during the liquid filling operation. In other embodiments, the second liquid filling port 362 may not be located inside the first liquid filling port 3312, that is, the first liquid filling port 3312 and the second liquid filling port 362 may be arranged at intervals, for example, the cleaning liquid tank 360 is located at the center of the clean water chamber 311, and correspondingly, the second liquid filling port 362 is located in the middle; and the first liquid filling port 3312 of the clean water tank 310 may be opened on the left or right side of the upper end surface, etc. Figures 3 to 5 as well as Fig.21 As shown, in one embodiment, the cleaning liquid tank 360 extends upward from the bottom wall 3111 of the clean water chamber 311. Specifically, the cleaning liquid tank 360 can be arranged along the gravity direction, so that the user can take it vertically, which is more convenient for the user to take it. In other embodiments, the cleaning liquid tank 360 can be connected to the side wall of the clean water chamber 311, for example, a buckle is provided on the side wall for clamping the cleaning liquid tank 360.

[0121] like Figures 3 to 5 as well as Fig.21 As shown, in one embodiment, the cleaning liquid tank 360 extends downward from the bottom wall 3111 of the clean water chamber 311 to form a second liquid outlet 363, and the inner wall of the second liquid outlet 363 forms a second liquid outlet 3631. By setting the second liquid outlet 363 on the bottom wall 3111 of the clean water chamber 311, it is convenient for the cleaning liquid to flow out under the action of gravity; and it can reduce the design of the pipeline opening between the cleaning liquid tank 360 and the clean water tank 310, eliminating the need to set a joint at the opening position and connect the seal. Figures 3 to 5 as well as Fig.21 As shown, in another embodiment, the cleaning liquid cavity 361, the second liquid injection port 362 and the second liquid outlet nozzle 363 have the same aperture, that is, the cleaning liquid tank 360 has a constant diameter. In this way, when the cleaning liquid tank 360 is injection molded, demolding can be facilitated, reducing the difficulty of processing. At the same time, it can also reduce the possibility of liquid residue on the uneven surface causing dirt.

[0122] like Figures 3 to 5 as well as Fig.21 As shown, in one embodiment, the clean water tank 310 extends downward from the bottom wall 3111 of the clean water chamber 311 to form a first liquid outlet 313, and the inner wall of the first liquid outlet 313 forms a first liquid outlet 3131; the first liquid outlet 313 and the second liquid outlet 363 have the same aperture. Specifically, the clean water tank 310 and the cleaning liquid tank 360 can be integrally formed by a mold, and can be demoulded from one direction, which is more convenient for processing. Figures 3 to 5 as well as Fig.21 As shown, in one embodiment, the apertures of the first liquid outlet nozzle 313 and the second liquid outlet nozzle 363 are the same, so the first valve and the second valve 340 with the same structure and the same size can be used, and the product type is simpler and easier to assemble. Figures 3 to 5 as well as Fig.21As shown, in one embodiment, one of the clean water tank 310 and the box seat 210 is provided with a first clamping block 314, and the other is provided with a first clamping groove 214 for clamping and cooperating with the first clamping block 314. Specifically, the first clamping block 314 is provided on the clean water tank 310, and the first clamping groove 214 is provided on the box seat 210. Through the cooperation of the first clamping block 314 and the first clamping groove 214, not only the connection effect of the clean water tank 310 and the box seat 210 can be improved, but also the positioning and installation can be played. Furthermore, an open groove is provided on the first clamping block 314, and the cross-sectional area of ​​the open groove gradually increases along the demoulding direction, so that it is more convenient to integrally mold the clean water tank 310, and it can be demoulded in the direction from bottom to top, reducing the difficulty of processing. The structures of the first valve and the second valve 340 may refer to the aforementioned valve assembly 100. Since the first valve and the second valve 340 are respectively used to connect the clean water tank 310 and the cleaning liquid tank 360 to the tank seat 210, the expressions of the first valve and the second valve 340 are used to distinguish them. In fact, the structures of the two may be the same, that is, both adopt the structure of the aforementioned valve assembly 100.

[0123] like Figures 3 to 5 as well as Fig.21 As shown, in one embodiment, the clean water tank 310 further includes a first sealing cover 316, and the first sealing cover 316 is used to seal the first liquid filling port 3312. In order to improve the sealing effect, a sealing gasket may be provided between the first sealing cover 316 and the first liquid filling port 3312. Furthermore, a first handle 3162 is provided on the first sealing cover 316, so that the operator can hold the first handle 3162 to remove the first sealing cover 316. It can be understood that the cleaning liquid tank 360 further includes a second sealing cover 364 for sealing the second liquid filling port 362, and a sealing gasket may be provided between the second sealing cover 364 and the second liquid filling port 362 to improve the sealing effect. As shown Figures 3 to 5 as well as Fig.21 As shown, in one embodiment, the clean water tank 310 also includes a connecting cover 315, and the connecting cover 315 is covered on the clean water chamber 311; the connecting cover 315 is constructed with a through hole 3151, and the through hole 3151 forms a first liquid filling port 3312. Among them, the clean water tank 310 can be fixedly connected to the clean water chamber 311, for example, the two are welded or detachably connected. The first liquid filling port 3312 is formed by providing the connecting cover 315, which facilitates the blocking of the first liquid filling port 3312. Furthermore, the connecting cover 315 is recessed downward to form a receiving groove 3152, and at least a part of the first blocking cover 316 is located in the receiving groove 3152. Through this arrangement, the space occupied by the first blocking cover 316 is reduced. As shown Figures 3 to 5 as well as Fig.21As shown, in some embodiments, one of the groove wall of the accommodating groove 3152 and the first blocking cover 316 is provided with a second clamping block 3153, and the other is provided with a second clamping groove 3161 for clamping and cooperating with the second clamping block 3153. Specifically, the second clamping block 3153 is provided on the side wall of the accommodating groove 3152 of the connecting cover 315, and a step groove is provided on the first blocking cover 316, which forms the second clamping groove 3161, so that when the first blocking cover 316 is covered and connected, the second clamping block 3153 abuts against the second clamping groove 3161, thereby improving the connection effect between the first blocking cover 316 and the connecting cover 315, and ensuring the reliability of the first blocking cover 316 blocking the first liquid injection port 3312.

[0124] like Figure 3 and Figure 5 As shown, in some embodiments, the structure of the second valve 340 can refer to the structure of the valve assembly 100, and the connection or disconnection between the cleaning liquid tank 360 and the cleaning liquid pump 420 is achieved through the cooperation of the first annular protrusion 121 and the piston rod 110, and the cooperation of the first annular protrusion 121, the second annular protrusion 122 and the connecting portion 211 on the tank seat 210. Further, a flow meter can also be set in the cleaning liquid tank 360 to obtain the amount of cleaning liquid pumped out. The cleaning liquid pump 420 pumps out a corresponding amount of cleaning liquid according to program control, merges with the clean water in the clean water channel 540, and sprays out from the third liquid outlet 521 of the handle assembly 500.

[0125] In some embodiments, the cleaning device 10 has multiple working modes, including normal temperature mode, hot water mode, rinsing mode, steam mode, and ironing mode. It can be placed in any working mode as needed. When the cleaning device 10 is in normal temperature mode, the negative pressure generator 700 works to generate a large vacuum suction force to absorb dust mites or dirt; at the same time, the water pump 410 and the cleaning liquid pump 420 work to pump clean water and cleaning liquid into the clean water channel 540, and spray normal temperature water through the third liquid outlet 521. When the cleaning device 10 is in hot water mode, the negative pressure generator 700, the water pump 410, the cleaning liquid pump 420 and the heating component 600 all work, and the clean water pumped out of the clean water tank 310 is heated by the heating component 600 according to the set temperature and mixed with the cleaning liquid pumped out by the cleaning liquid pump 420, and hot water of 50°C is sprayed out through the third liquid outlet 521. In the above-mentioned normal temperature mode and hot water mode, the ratio of clean water and cleaning liquid can be set to automatic ratio, or it can be set to adjust the ratio according to demand. When the cleaning device 10 is in the rinsing mode, the negative pressure generator 700 and the water pump 410 work, and spray normal temperature water through the third liquid outlet 521 to rinse and clean the surface to be cleaned to remove the residue of the cleaning liquid. In the rinsing mode, if the self-cleaning nozzle is replaced, the clean water at normal temperature is sprayed through the clean water channel 540, and the sprayed normal temperature water is recovered to the sewage tank 320 through the suction channel 530, and the clean water channel 540 and the suction channel 530 can be self-cleaned. In the above-mentioned normal temperature mode, hot water mode and rinsing mode, the air pump 230 can be turned on as needed to spray out the water remaining in the clean water channel 540. When the cleaning device 10 is in the steam mode, the negative pressure generator 700, the water pump 410 and the heating component 600 are all working. When the heating temperature reaches the set temperature, the water pump 410 introduces clean water into the heating component 600, thereby generating high-temperature steam and spraying it from the third liquid outlet 521. When the cleaning device 10 is in the ironing mode, only the water pump 410 and the heating component 600 are working, and the corresponding ironing brush head is replaced to spray high-temperature steam through the third liquid outlet 521 to achieve the ironing function. In some embodiments, a control panel is also provided on the box seat, and a gear selection button, a temperature adjustment button, and a water output adjustment button are provided on the control panel. The cleaning device can be put into different working modes by operating the gear selection button. The temperature adjustment button is used to adjust the heating temperature of the heating component to heat the clean water to a preset temperature, such as 50°C, or directly spray normal temperature water without heating. Figure 1 As shown, in some embodiments, the cleaning device 10 further includes a handle 350 connected to the box base 210. By providing the handle 350, it is convenient for the operator to transfer the cleaning device 10 to the area that needs to be cleaned. The clean water tank 310 and the dirty water tank 320 can be respectively provided on opposite sides of the handle 350, so that the weight on both sides of the handle 350 can be balanced. Figure 1As shown, in some embodiments, a wire receiving box is also provided on the box seat 210. When the cleaning device 10 is not in use, the power cord can be wound around the wire receiving box to reduce the clutter and the space occupied by the power cord.

[0126] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0127] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A valve assembly, used for detachably connecting a box body to a connecting portion (211) of a box seat (210), It is characterized in that The valve assembly comprises: A piston rod (110); A first sealing member (120) is arranged below the piston rod (110); a first annular protrusion (121) and a second annular protrusion (122) are arranged on an inner wall of the first sealing member (120); the second annular protrusion (122) and the first annular protrusion (121) are arranged at intervals along the axial direction of the first sealing member (120); During the process of installing and / or removing the box body and the box seat (210), at least one of the first annular protrusion (121) and the second annular protrusion (122) always maintains a sealed fit with at least one of the piston rod (110) and the connecting portion (211); A storage area is formed between the first annular protrusion (121) and the second annular protrusion (122).

2. The valve assembly according to claim 1, It is characterized in that The connecting portion (211) is configured with a central through hole (2112) and a first notch (2111); an inlet of the central through hole (2112) is connected to the first notch (2111); and liquid entering the first notch (2111) is led out through the central through hole (2112). Preferably, the second annular protrusion (122) is arranged below the first annular protrusion (121), and the distance between the first annular protrusion (121) and the second annular protrusion (122) along the axial direction of the first seal (120) is greater than the depth of the first notch (2111) along the axial direction of the first seal (120). Preferably, the first notch (2111) comprises a plurality of first notches (2111), and the plurality of first notches (2111) are arranged at intervals along the circumference of the connecting portion (211). Preferably, the end of the second annular protrusion (122) is bent radially inwardly and toward the first annular protrusion (121), and the end of the second annular protrusion (122) is in the shape of a hook.

3. The valve assembly according to claim 1, It is characterized in that A first space (123) is enclosed between the first annular protrusion (121), the inner wall of the first sealing member (120), and the piston rod (110); The valve assembly further comprises a first housing (140), wherein the first housing (140) is provided with a water channel (141) for connecting the box body with the first space (123); A water-passing mesh cover (160) is arranged in the first shell (140), and the water-passing mesh cover (160) is used to block the water-passing groove (141).

4. The valve assembly according to claim 3, It is characterized in that The valve assembly also includes a second shell (170) connected to the box body, the piston rod (110) is located in an inner cavity enclosed by the first shell (140) and the second shell (170), the first sealing member (120) is connected to the inner wall of the second shell (170); the first shell (140) is snap-connected to the second shell (170). Preferably, the valve assembly further comprises a reset elastic member (130), and two ends of the reset elastic member (130) respectively abut against the top wall of the first housing (140) and the upper end of the piston rod (110). Preferably, the valve assembly further comprises a second sealing member (150), wherein the second sealing member (150) is an annular sealing block which is sleeved on the piston rod (110); When the second sealing member (150) moves up and down along with the piston rod (110), the lower end of the second sealing member (150) abuts against or separates from the protruding portion of the second shell (170), so as to realize the connection and disconnection between the clean water entering the inner cavity of the first shell (140) and the first space (123). Preferably, the second shell (170) includes a first annular plate (173) and a second annular plate (174) which are spaced apart from the outside to the inside along the radial direction of the piston rod (110), and a supporting groove (175) is formed between the first annular plate (173) and the second annular plate (174), and the supporting groove (175) is used to clamp the box body.

5. The valve assembly according to claim 4, It is characterized in that The inner wall of the second shell (170) is provided with a first limiting portion (171) and a second limiting portion (172), and the first sealing member (120) is respectively clamped to the first limiting portion (171) and the second limiting portion (172) at two ends along its own axial direction. Preferably, one of the first limiting portion (171) and the second limiting portion (172) is a limiting groove, and the other is a limiting sheet. Preferably, a mounting cavity (213) is provided in the box seat (210), the mounting cavity (213) accommodates the lower half of the second shell (170), and the connecting portion (211) is protruding in the mounting cavity (213). Preferably, the piston rod (110) is provided with a first inclined surface (111), and the first sealing member (120) is provided with a second inclined surface (1211) for slidingly cooperating with the first inclined surface (111); the first inclined surface (111) and the second inclined surface (1211) have the same inclination angle. Preferably, the upper end surface of the first sealing member (120) is provided with a third annular protrusion (126); and the outer peripheral surface of the first sealing member (120) is provided with a fourth annular protrusion (127).

6. A cleaning device, It is characterized in that It comprises a box seat (210), a box body, and a valve assembly according to any one of claims 1 to 5, wherein the box body is detachably connected to the box seat (210) via the valve assembly.

7. The cleaning device according to claim 6, It is characterized in that The cleaning device also includes: A base (220) connected to the box base (210); A water pump (410) is disposed in the base (220); a water inlet of the water pump (410) is connected to a water outlet of the box; A handle assembly (500) is connected to the box seat (210); the handle assembly (500) is provided with a third liquid outlet (521); The heating component (600) is disposed in the base (220); the water outlet of the water pump (410) and the third liquid outlet (521) are both in communication with the heating component (600). Preferably, the handle assembly (500) is provided with a suction port (522) spaced apart from the third liquid outlet (521); the cleaning device further comprises a negative pressure generator (700) arranged in the base (220) and a sewage tank (320) connected to the tank seat (210); The negative pressure generator (700) and the suction port (522) are both in communication with the sewage tank (320) so as to recover the gas-liquid-solid mixture on the surface to be cleaned to the sewage tank (320) via the suction port (522).

8. The cleaning device according to claim 7, It is characterized in that A gas-liquid separator (330) is arranged in the sewage tank (320) of the cleaning equipment, and the gas-liquid separator (330) comprises: The main body (336) is provided with a first flow channel (331) for the flow of the gas-liquid-solid mixture; the outlet of the first flow channel (331) is connected to the sewage tank; a separation cover (335) disposed at the outlet of the first flow channel (331); the separation cover (335) is provided with a drainage portion (3353) and a gas outlet (3352); the drainage portion (3353) extends from the separation cover (335) in a direction pointing to the bottom of the sewage tank; the extended end of the drainage portion (3353) is lower than the top of the gas outlet (3352); the gas outlet (3352) is used to communicate with the negative pressure generator (700) of the cleaning device; The liquid baffle (333) is connected to the outer wall of the main body (336) and is located below the drainage portion (3353). Preferably, the guide portion (3353) includes a plurality of guide portions, and a gap between two adjacent guide portions (3353) forms the gas outlet (3352). Preferably, the inner side wall of the separation cover (335) is provided with a diverter portion (3351); the diverter portion (3351) extends from the separation cover (335) in a direction toward the bottom of the sewage tank. Preferably, the extended end of the diverter portion (3351) corresponds to the top end of the gas outlet (3352), and the diverter portion (3351) gradually widens from top to bottom in a direction away from the inner wall of the guide portion (3353). Preferably, the drainage portion (3353) extends obliquely downward and outward; and / or The drainage portion (3353) gradually narrows from the direction where the drainage portion (3353) points to the liquid baffle (333); and / or From the direction in which the drainage portion (3353) points to the liquid baffle plate (333), the liquid baffle plate (333) extends downward and outward in an inclined manner. Preferably, the liquid baffle (333) is located in the upper middle portion of the main body (336). Preferably, the liquid baffle (333) is located at a position 1 / 4-1 / 3 from top to bottom of the main body (336). Preferably, the distance between the extended end of the drainage portion (3353) and the outer side wall of the main body (336) is greater than the distance between the extended end of the liquid baffle (333) and the outer side wall of the main body (336). Preferably, the distance between the extended end of the drainage portion (3353) and the outer side wall of the main body (336) is 1.1-1.2 times the distance between the extended end of the liquid baffle (333) and the outer side wall of the main body (336). Preferably, the top of the gas outlet (3352) is lower than the outlet of the first flow channel (331); and / or The bottom end of the drainage portion (3353) is lower than the outlet of the first flow channel (331). Preferably, one of the separation cover (335) and the main body (336) is provided with a plug-in block (3354), and the other is provided with a plug-in slot (3361) for plugging and mating with the plug-in block (3354).

9. The cleaning device according to claim 8, It is characterized in that A second flow channel (332) spaced apart from the first flow channel (331) is also provided inside the main body (336); an inlet of the second flow channel (332) is connected to the gas outlet (3352), and an outlet of the second flow channel (332) is used to communicate with the negative pressure generator (700). Preferably, the height of the inlet of the second flow channel (332) is higher than the height of the outlet of the first flow channel (331); and / or The inlet of the second flow channel (332) and the gas outlet (3352) are respectively located on two opposite sides of the main body (336). Preferably, the flow direction of the gas-liquid-solid mixture in the first flow channel (331) is opposite to the flow direction of the gas in the gas-liquid-solid mixture in the second flow channel (332). Preferably, a filter screen (334) is provided in the second flow channel (332); and the outer diameter of the filter screen (334) gradually increases in a direction from the inlet of the second flow channel (332) to the outlet of the second flow channel (332).

10. The cleaning device according to claim 6, It is characterized in that The box body comprises a clean water tank (310), wherein the clean water tank (310) has a clean water cavity (311) and a first liquid injection port (3312); the first liquid injection port (3312) is located at an end of the clean water tank (310) away from the installation surface of the box seat (210); The box body also includes a cleaning liquid tank (360) disposed in the clean water cavity (311); the cleaning liquid tank (360) has a cleaning liquid cavity (361) and a second liquid injection port (362); the second liquid injection port (362) is located at one end of the cleaning liquid tank (360) away from the mounting surface of the box seat (210). Preferably, the second liquid injection port (362) is located inside the first liquid injection port (3312). Preferably, the cleaning liquid tank (360) extends upward from the bottom wall (3111) of the clean water chamber (311). Preferably, the cleaning liquid tank (360) has a second liquid outlet nozzle (363) extending downward from the bottom wall (3111) of the clean water chamber (311), and the inner wall of the second liquid outlet nozzle (363) forms a second liquid outlet (3631) of the cleaning liquid tank (360). Preferably, the cleaning liquid cavity (361), the second liquid injection port (362) and the second liquid outlet nozzle (363) have the same aperture. Preferably, the clean water tank (310) has a first liquid outlet (313) extending downward from the bottom wall (3111) of the clean water chamber (311), and the inner wall of the first liquid outlet (313) forms a first liquid outlet (3131) of the clean water tank (310); The first liquid outlet nozzle (313) and the second liquid outlet nozzle (363) have the same aperture. Preferably, the cleaning device further comprises two valve assemblies (100); the two valve assemblies (100) are respectively connected to the first liquid outlet nozzle (313) and the second liquid outlet nozzle (363) to respectively place the first liquid outlet (3131) and the second liquid outlet (3631) in a conducting state or a blocked state. Preferably, one of the clean water tank (310) and the tank seat (210) is provided with a first snap-fit ​​block (314), and the other is provided with a first snap-fit ​​groove (214) for snap-fitting with the first snap-fit ​​block (314). Preferably, the clean water tank (310) further comprises a connection cover (315), wherein the connection cover (315) is disposed on the clean water chamber (311); the connection cover (315) is provided with a through hole (3151), and the through hole (3151) forms the first liquid injection port (3312). Preferably, the connecting cover (315) is recessed downward to form a receiving groove (3152), and a first blocking cover (316) for blocking the first liquid injection port (3312) is located in the receiving groove (3152); One of the groove wall of the accommodating groove (3152) and the first blocking cover (316) is provided with a second clamping block (3153), and the other is provided with a second clamping groove (3161) for clamping with the second clamping block (3153).

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