Sealing element, receiving structure of cleaning device and cleaning device

Abstract

The invention relates to a sealing element, a receiving structure of cleaning equipment and the cleaning equipment, the sealing element is provided with a cavity and a first receding opening for a liquid storage tank to pass through, and the first receding opening communicates with the cavity; the outer wall of the sealing element is provided with a sunken part which is formed by sinking towards the axial direction of the sealing element, the inner wall of the sealing element is provided with a bulge which protrudes towards the axial direction, the sunken part corresponds to the bulge, and the bulge is used for triggering the liquid storage tank to abut against the sealing element in a sealing manner. By utilizing the sealing element disclosed by the embodiment of the invention, the disassembly of the clear water tank assembly is more labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and in particular to a sealing element, a receiving structure of a cleaning equipment and a cleaning equipment. Background Art

[0002] In wet cleaning equipment, in order to better clean the surface to be cleaned, the cleaning equipment often comes with a clean water tank. Figure 1 In the cleaning device shown in the publication number CN112842164A, the clean water tank 01 can be disassembled so that the clean liquid in the clean water tank 01 can be refilled after it is used up. In addition, the clean water tank 01 is provided with a water outlet structure so that the clean liquid in the clean water tank 01 can flow to the surface to be cleaned through the water outlet structure. The cleaning device seals the water outlet structure of the clean water tank 01 through an O-ring structure, and the clean water tank is laborious to disassemble and difficult to operate. Summary of the invention

[0003] Problem that the invention aims to solve

[0004] Aiming at the problem that the clean water tank in the cleaning equipment is laborious and difficult to operate during disassembly, a sealing element, a receiving structure of the cleaning equipment and the cleaning equipment are provided.

[0005] Solutions for solving problems

[0006] A first aspect of the present disclosure provides a sealing element, the sealing element comprising: a cavity and a first avoidance opening connected to a liquid storage tank, the first avoidance opening being in communication with the cavity;

[0007] The outer wall of the sealing element has a depression formed by being recessed toward the axial direction of the sealing element, and the inner wall of the sealing element has a protrusion protruding toward the axial direction. The depression corresponds to the protrusion, and the protrusion is used to trigger the sealing abutment between the liquid storage tank and the sealing element.

[0008] Optionally, the sealing element comprises:

[0009] An inlet portion, a first end of which has the first avoidance opening;

[0010] a sealing portion connected to the second end of the inlet portion, the sealing portion and the inlet portion jointly forming the cavity; wherein the second end is an opposite end to the first end;

[0011] The protrusion is located between the inlet portion and the sealing portion, and is used to trigger the sealing portion to abut against the liquid storage tank in a sealed manner.

[0012] Optionally, the inner diameter of at least a portion of the inlet portion gradually increases from the protrusion toward the first avoidance opening; and / or the inner diameter of at least a portion of the sealing portion gradually increases from the protrusion toward a direction away from the first avoidance opening.

[0013] Optionally, the angle between the plane where the inner wall of the inlet portion is located and the horizontal plane is 0° to 50°;

[0014] The angle between the plane where the inner wall of the sealing part is located and the horizontal plane is 70° to 90°.

[0015] Optionally, there is a gap between the inlet portion and the liquid storage tank.

[0016] Optionally, the sealing element further comprises:

[0017] A fixing portion protrudes radially out of the cavity from the inlet portion, and at least the fixing portion is used to fix the sealing element.

[0018] Optionally, when fluid passes through the sealing element, the inlet portion is upstream of the fluid relative to the sealing portion (114).

[0019] Optionally, the sealing element has a basic inner diameter in the axial direction and at least one matching inner diameter; the inner diameter of the circle where the protrusion is located is the matching inner diameter, and the portion of the inner wall of the sealing element where the protrusion is not provided has the basic inner diameter.

[0020] The sealing element is made of a flexible material, so that the matching inner diameter can change the inner diameter value in response to the plug-in action of the liquid storage tank.

[0021] Optionally, the fitting inner diameter is smaller than the basic inner diameter.

[0022] Optionally, the number of the matching inner diameters is at least two, and in the direction in which the liquid storage tank is inserted into the sealing element, at least two of the matching inner diameters gradually increase.

[0023] A second aspect of the present disclosure provides a receiving structure of a cleaning device, the receiving structure comprising:

[0024] The bin body has a first water outlet, a receiving bin and a mounting port;

[0025] The sealing element described in the embodiment of the first aspect is located in the receiving bin, and the installation opening is used for the sealing element to pass through;

[0026] There is a gap between the outer wall of the sealing element and the inner wall of the receiving bin;

[0027] When the liquid storage tank is in sealing contact with the sealing element, the sealing element is in sealing contact with the inner wall of the receiving bin.

[0028] Optionally, the warehouse body comprises:

[0029] The avoidance portion has the gap with the outside of the sealing element, and the avoidance portion has the installation opening;

[0030] A guide portion, wherein the inner wall of the guide portion is transitionally matched with the sealing portion of the sealing element, and the guide portion has the first water outlet.

[0031] Optionally, the receiving structure further includes:

[0032] A bottom bracket is located in the receiving bin, wherein the bottom bracket is at least partially located in the cavity of the sealing element, and the bottom bracket is used to trigger water discharge from the liquid storage tank.

[0033] Optionally, the bottom bracket is located between the bottom of the sealing element and the bottom wall of the receiving bin, and opposite ends of the bottom bracket are respectively abutted against the bottom of the sealing element and the bottom wall of the receiving bin.

[0034] Optionally, the receiving structure further comprises: an end cover, the end cover having a second avoidance opening communicating with the installation opening;

[0035] The fixed portion of the sealing element is located between the end cover and the bin body.

[0036] Optionally, the end cover comprises:

[0037] The docking portion has the second avoidance opening;

[0038] a non-return rib, located in the avoidance portion, the non-return rib extending from the docking portion along the axial direction of the second avoidance opening toward the bottom wall of the receiving bin;

[0039] The side wall of the inlet portion of the sealing element is located between the non-return rib and the side wall of the receiving bin, and the fixing portion is located between the docking portion and the top of the receiving bin.

[0040] Optionally, the warehouse body comprises:

[0041] The extending portion radially extends from the avoiding portion to the outside of the receiving bin, the extending portion has a mounting hole, the end cover has a mounting column, and the mounting column is located in the mounting hole.

[0042] Optionally, the bottom bracket includes: an upper protrusion for releasing the sealing structure from blocking the water outlet of the liquid storage tank, a lower protrusion for supporting the height, and a filter portion located between the upper protrusion and the lower protrusion, and both ends of the filter portion are respectively abutted against the bottom of the sealing element and the bottom wall of the receiving bin.

[0043] Optionally, the difference between the height of the upper protrusion and the height of the lower protrusion is less than or equal to a preset difference, and / or the shape of the upper protrusion is the same as the shape of the lower protrusion.

[0044] A third aspect of the present disclosure provides a cleaning device, the cleaning device comprising:

[0045] The receiving structure of the cleaning device according to the second aspect of the embodiment;

[0046] The clean water tank assembly has at least a plug-in state and a disassembled state relative to the receiving structure;

[0047] Wherein, the clean water tank assembly is in the plug-in state, and the clean water tank assembly is in sealing contact with the sealing element; the clean water tank assembly is in the split state, and the clean water tank assembly is separated from the receiving structure;

[0048] The liquid storage tank is a partial structure of the clean water tank assembly.

[0049] Optionally, the clean water tank assembly comprises:

[0050] A clean water tank, the clean water tank comprising a water tank body and a water outlet pipe, the water tank body having a chamber for accommodating liquid and a second water outlet; the water outlet pipe is in communication with the second water outlet, the clean water tank is the liquid storage tank, wherein the clean water tank is connected to the receiving structure through the water outlet pipe;

[0051] A valve body, located in the water outlet pipe;

[0052] An elastic member, two ends of which are respectively connected to the water outlet pipe and the valve body;

[0053] The clean water tank assembly is in the disassembled state, and the valve body is sealedly connected to the inner wall of the water outlet pipe to block the second water outlet;

[0054] The clean water tank assembly is in the plug-in state, the valve body is in abutment with the bottom bracket, a water outlet gap is provided between the valve body and the water outlet pipe for liquid to pass through, and the elastic member is in a state of storing elastic restoring force, and the elastic restoring force is used to drive the valve body to restore the sealed connection with the inner wall of the sealing tube when the liquid storage tank is restored to the split state.

[0055] Optionally, the clean water tank assembly further has a trigger state relative to the receiving structure, and the trigger state is located before the plug-in state;

[0056] The clean water tank assembly is in the triggered state, the liquid storage tank is in sealing contact with the protrusion, and the valve body and the bottom bracket are in a separated state.

[0057] Effects of the Invention

[0058] In the sealing element of the disclosed embodiment, when the liquid storage tank is inserted into the cavity of the sealing element and contacts the protrusion on the sealing element, the protrusion is used to trigger the deformation of the sealing element, and then the deformed sealing element can achieve sealing contact with the liquid storage tank. This method can effectively ensure the sealing effect and make the insertion and removal of the liquid storage tank more labor-saving and easier to operate. The liquid storage tank can be a part of the structure of the clean water tank assembly, which also makes the removal of the clean water tank assembly more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a structural schematic diagram of a cleaning device in the prior art;

[0060] Figure 1a A schematic diagram of a sectional structure of a cleaning device according to an embodiment of the present disclosure;

[0061] Figure 1b for Figure 1a Schematic diagram of the cleaning equipment structure without a clean water tank installed;

[0062] Figure 1c for Figure 1a Schematic diagram of the installation process of the cleaning equipment;

[0063] Figure 2 A schematic structural diagram of a sealing element provided in one embodiment of the present disclosure;

[0064] Figure 3 for Figure 2 A cross-sectional view of the sealing element;

[0065] Figure 4 A schematic diagram of a receiving structure of a cleaning device provided in one embodiment of the present disclosure;

[0066] Figure 5a A cross-sectional view of a receiving structure of a cleaning device provided in one embodiment of the present disclosure;

[0067] Figure 5b for Figure 5a Schematic diagram of the structure of the middle and bottom bracket;

[0068] Figure 6 A schematic diagram of the structure of a water tank assembly of a cleaning device provided in one embodiment of the present disclosure;

[0069] Figure 7a for Figure 6 Water tank components and Figure 5a One of the partial structural cross-sectional views after the receiving structure is assembled;

[0070] Figure 7b for Figure 6 Water tank components and Figure 5a The second partial structural cross-sectional view after the receiving structure is assembled;

[0071] Figure 8a for Figure 6 Water tank components and Figure 5a The third partial structural cross-sectional view after the receiving structure is assembled;

[0072] Figure 8b for Figure 8a The enlarged view of point A in the middle;

[0073] Figure 9a for Figure 6 Water tank components and Figure 5a The fourth partial structural cross-sectional view after the receiving structure is assembled;

[0074] Figure 9b for Figure 9a Enlarged view of point B in the middle.

[0075] Description of Reference Numerals

[0076] 01. Clean water tank of cleaning equipment in the prior art

[0077] 100, body; 101, pipe; 102, handheld vacuum cleaner; 102a, battery module; 103, mounting slot;

[0078] 110, sealing element; 110a, cavity; 110b, first avoidance; 110c, bottom of sealing element; 111, protrusion; 112, recess; 113, entrance portion; 113a, inner wall of entrance portion; 114, sealing portion; 114a, inner wall of sealing portion; 115, fixing portion;

[0079] 120, bin body; 120a, mounting port; 121, first water outlet; 122, receiving bin; 122a, bottom wall of receiving bin; 123, avoidance portion; 124, guide portion; 125, gap between the outer wall of the sealing element and the inner wall of the receiving bin; 126, extension portion; 126a, mounting hole;

[0080] 130, end cover; 131, second avoidance; 132, non-return rib; 133, docking part; 134, mounting column 134;

[0081] 140, bottom bracket; 141, upper protrusion; 142, lower protrusion; 143, filter part;

[0082] 150, water tank assembly; 151, clean water tank; 151a, chamber; 151b, second water outlet hole; 152, water outlet pipe; 153, valve core; 154, elastic member; 155, sealing member;

[0083] 160. Floor brush structure 160; 161. Roller brush. DETAILED DESCRIPTION

[0084] In order to make the technical solutions and beneficial effects of the present invention more clearly understandable, the following is a detailed description by listing specific embodiments. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0085] In the description of the present invention, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation to the present invention.

[0086] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two, such as two, three, etc.; "several" means at least one, such as one, two, three, etc., unless otherwise clearly and specifically defined.

[0087] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral 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, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0089] In the disclosed embodiment, the liquid storage tank can be a clean water tank in the water tank assembly, or a detergent tank. The cleaning liquid contained in the clean water tank is clean water or tap water, and the detergent tank is used to contain detergent.

[0090] like Figure 1a As shown, at least during the floor scrubbing or self-cleaning process, the control system (not shown) of the cleaning device will supply power to the water pump (not shown), and under the drive of the water pump and the action of gravity, the liquid in the water tank assembly 150 will pass through the receiving structure (located at Figure 1a The liquid enters the water pipe (not shown) through the water pipe, enters the water pump inlet, flows into the pipe (101) through the water pump inlet, and is then transported to the floor brush structure 160 through the pipe, soaking the roller brush 161 of the floor brush structure 160 or the surface to be cleaned, and performs self-cleaning or floor washing. It is understandable that the cleaning device of the embodiment of the present disclosure is not limited to a floor scrubber, but can also be other surface cleaning devices such as a steam mop.

[0091] In order to facilitate the addition of water to the water tank assembly, the water tank assembly needs to be removed from the machine body first, and the water tank assembly will not discharge water after removal. Figure 1 As shown, when the water tank assembly is filled with water and installed on the fuselage, the liquid storage tank of the water tank assembly will be inserted into the receiving structure to achieve water discharge. The sealing element 110 can play a sealing role between the liquid storage tank and the inner wall of the receiving structure to provide pipeline sealing.

[0092] Generally, the sealing element adopts a single or multiple O-ring structure. In order to ensure the sealing effect, the interference of the sealing element is large, but it also causes that a large force is required to insert and remove the liquid storage tank, making it difficult to disassemble and install the water tank assembly.

[0093] In order to further improve the problem of difficulty in plugging and unplugging the liquid storage tank, the embodiment of the present disclosure provides the following technical solution.

[0094] like Figure 2 and Figure 3A schematic structural diagram of a sealing element 110 is shown as an example.

[0095] like Figure 2 and Figure 3 As shown, the embodiment of the present disclosure provides a sealing element 110, which can provide pipeline sealing at the joint between the liquid storage tank and the receiving structure. The sealing element 110 has a cavity 110a and a first avoidance port 110b for the liquid storage tank to pass through. The first avoidance port 110b is connected to the cavity 110a, and the liquid storage tank can enter the cavity 110a through the first avoidance port 110b. The outer wall of the sealing element 110 has a recessed part 112 formed by being recessed in the axial direction of the sealing element 110, and the inner wall of the sealing element 110 has a protrusion 111 protruding in the axial direction, and the recess 112 corresponds to the protrusion 111. During the insertion process of the liquid storage tank into the cavity 110a, it will contact with the protrusion 111, and apply an external force to the sealing element 110 through the protrusion 111, thereby causing the sealing element 110 to deform. The deformed sealing element 110 will gradually fit tightly with the liquid storage tank to form an interference fit to achieve sealing. Therefore, the sealing element 110 triggers the sealing contact between the reservoir and the sealing element 110 through the protrusion 111 .

[0096] The recess 112 is used to compensate for the deformation of the sealing element 110 .

[0097] like Figure 2 and Figure 3 As shown, the sealing element 110 is annular.

[0098] The deformation of the sealing element 110 includes radial deformation and longitudinal deformation along the sealing element 110. The radial deformation includes at least part of the sealing element 110 gradually moving radially toward the axis O1, so that the sealing element 110 and the liquid storage tank are tightly sealed. The longitudinal deformation includes: the longitudinal length of the sealing element 110 becomes longer.

[0099] In the application scenario where the sealing element 110 is fixed to the inner wall of the receiving structure, such as Figures 8a to 9bAs shown, during the process of inserting the plug-in component into the sealing element 110, as the pressure of the liquid storage tank on the protrusion 111 increases, the deformation of the sealing element 110 will gradually increase, and the radial deformation of the sealing element 110 toward the plug-in component will gradually increase, that is, the sealing element 110 will gradually tighten until the plug-in component and the sealing element 110 are sealed and abutted, and the pressure on the plug-in component from the sealing element 110 during this insertion process is gradually increased. During the process of pulling out the plug-in component from the sealing element 110, the pressure of the liquid storage tank on the protrusion 111 will gradually decrease, the deformation of the sealing element 110 will gradually decrease, and the radial deformation of the sealing element 110 toward the plug-in component will gradually decrease, that is, the sealing element 110 will gradually open until the plug-in component is separated from the sealing element 110, and the pressure on the plug-in component from the sealing element 110 during this pulling out process is gradually reduced. For the sealing element with an O-ring structure, whether it is during the insertion process or the pulling out process, the pressure on the plug-in component from the sealing element with an O-ring structure is almost the same.

[0100] When the plug-in component is sealed against the sealing element 110, the pressure exerted by the sealing element 110 on the plug-in component is recorded as P. For the sealing element with an O-ring structure, the pressure exerted by the sealing element with an O-ring structure on the liquid storage tank is almost equal to or approximately equal to P regardless of the insertion process or the removal process. As for the sealing element 110 in the embodiment of the present disclosure, during the insertion process, the pressure exerted by the sealing element 110 on the plug handle component gradually increases to P; during the removal process, the pressure exerted by the sealing element 110 on the plug handle component gradually decreases from P. Therefore, the use of the sealing element 110 of the embodiment of the present disclosure for sealing can make the plugging and unplugging of the liquid storage tank more labor-saving and easier to operate. The liquid storage tank can be a partial structure of the water tank assembly 150, thereby also making the disassembly of the water tank assembly 150 more labor-saving.

[0101] In some optional embodiments, the sealing element 110 has a basic inner diameter in the axial direction and at least one matching inner diameter; the sealing element 110 is made of a flexible material so that the matching inner diameter can change its inner diameter value in response to the insertion action of the liquid storage tank.

[0102] The process of the sealing element 110 docking with the liquid storage tank includes at least two operations in opposite directions, namely, insertion and extraction, wherein the insertion operation is accompanied by the plugging action. The plugging action of the liquid storage tank will change the inner diameter value of the matching inner diameter, and then at least part of the inner wall corresponding to the matching inner diameter will contact with the liquid storage tank to achieve a sealing effect, instead of the entire inner wall of the sealing element 110 contacting with the liquid storage tank, which reduces the resistance of the liquid storage tank docking process, making the plugging and extraction of the liquid storage tank more labor-saving and easier to operate.

[0103] In some embodiments, the matching inner diameter is smaller than the basic inner diameter. The matching inner diameter is smaller than the basic inner diameter, which can ensure that the part of the inner wall corresponding to the matching inner diameter contacts the liquid storage tank first, and the part of the inner wall corresponding to the basic inner diameter contacts the liquid storage tank later, so that the sealing element 110 is in close contact with the liquid storage tank to achieve a gradually increasing portion of the sealing, and this sealing method can make the docking of the liquid storage tank smoother.

[0104] Exemplarily, the number of matching inner diameters is at least two, and in the direction of the liquid reservoir being inserted into the receiving structure (which is also the direction of the liquid reservoir being inserted into the sealing element 110), at least two matching inner diameters gradually increase. At least two matching inner diameters are both located on the inner wall of the sealing element 110. If the position where the liquid reservoir is inserted is recorded as the upper end of the sealing element 110, then the end of the sealing element 110 opposite to the upper end is the lower end, and at least two matching inner diameters gradually increase from the upper end to the lower end. When the liquid reservoir is plugged in, it is first pressed against the matching inner diameter closest to the upper end to achieve sealing, causing deformation of the sealing element 110, and then the matching inner diameter located below is gradually pressed against the liquid reservoir to achieve further sealing.

[0105] The inner diameter of the circle where the protrusion 111 is located is the matching inner diameter, and the portion of the inner wall of the sealing element 110 not provided with the protrusion 111 has a basic inner diameter. If there are multiple matching inner diameters, the number of protrusions 111 is also multiple. For example: in the sealing element 110, the portion of the inner wall adjacent to the matching inner diameter, or the portion of the inner wall between two adjacent matching inner diameters can have a basic inner diameter.

[0106] Without limitation, the protrusion 111 is annular.

[0107] In the embodiment of the present disclosure, the ring-shaped includes but is not limited to: a circular ring, a square ring or a special-shaped ring.

[0108] Exemplarily, the sealing element 110 of the embodiment of the present disclosure is rubber. For example, the sealing element 110 is a silicone rubber sealing element 110 .

[0109] According to some optional embodiments of the present disclosure, the sealing element 110 includes: an inlet portion 113 and a sealing portion 114. The first end of the inlet portion 113 has a first avoidance opening (110b), the sealing portion 114 is connected to the second end of the inlet portion 113, and the sealing portion 114 and the inlet portion 113 together form a cavity (110a); the second end is the opposite end of the first end; the protrusion 111 is located between the inlet portion 113 and the sealing portion 114, and the protrusion 111 is used to trigger the sealing portion 114 to abut against the liquid storage tank.

[0110] like Figure 2 and Figure 3 As shown, the inlet portion 113 is located at the top and the sealing portion 114 is located at the bottom. Figures 7a to 9bAs shown, the reservoir is inserted from the inlet portion 113 to the sealing portion 114 .

[0111] When a fluid passes through the sealing element 110 , the inlet portion 113 is upstream of the fluid relative to the sealing portion 114 .

[0112] The sealing element 110 is sealed by the sealing portion 114, and the inlet portion 113 may not have a sealing function. In this structure, during the plugging and unplugging process (including the insertion process and the unplugging process) of the liquid storage tank, at the inlet portion 113, the liquid storage tank is hardly subjected to pressure from the sealing element 110, which can further reduce the difficulty of the plugging and unplugging process.

[0113] For example, Figure 8b and Figure 9b As shown, there is a gap between the inlet portion 113 and the liquid storage tank. During the plugging and unplugging process of the liquid storage tank, the inlet portion 113 can be out of contact with the liquid storage tank, and the inlet portion 113 has no pressure on the liquid storage tank.

[0114] like Figure 2 As shown, in the axial direction of the sealing element 110 , the protrusion 111 may be located in the middle of the sealing element 110 , or at a position slightly below the middle.

[0115] like Figure 2 As shown, according to some optional embodiments of the present disclosure, the inner diameter of at least a portion of the inlet portion 113 gradually increases from the protrusion 111 to the first avoidance opening 110b; and / or the inner diameter of at least a portion of the sealing portion 114 gradually increases from the protrusion 111 to the direction away from the first avoidance opening 110b.

[0116] like Figure 1 and Figure 2 As shown, the inlet portion 113 is in the shape of a frustum with a larger top and a smaller bottom, and the sealing portion 114 is in the shape of a frustum with a smaller top and a larger bottom.

[0117] Since the plug-in and pull-out part is inserted from the entrance part 113, the gradually enlarged inner wall of the entrance part 113 from the protrusion 111 to the first avoidance opening (110b) is more conducive to the insertion of the liquid storage tank, and even has a guiding effect on the insertion of the liquid storage tank. During the removal process of the liquid storage tank, the gradually enlarged inner wall of the sealing part 114 from the protrusion 111 to the direction away from the first avoidance opening 110b can reduce the obstruction caused by the removal of the liquid storage tank. Moreover, when the protrusion 111 triggers the deformation of the sealing element 110, the sealing part 114 with a small top and a large bottom can be radially deformed toward the liquid storage tank to achieve a sealed abutment between the sealing part 114 and the liquid storage tank.

[0118] like Figure 2As shown, according to some optional embodiments of the present disclosure, the angle a between the plane where the inner wall 113a of the inlet portion 113 is located and the horizontal plane is 0° to 50°; the angle b between the plane where the inner wall 114a of the sealing portion 114 is located and the horizontal plane is 70° to 90°.

[0119] For example, Figure 2 As shown, the angle a can be 30°, 40°, 45°, 48° or 50°. The angle b can be 70°, 75°, 80° or 85°. The smaller the angle a is, the easier it is to insert the liquid storage tank. The larger the angle b is, the easier it is to seal the sealing element 110 with the liquid storage tank after deformation.

[0120] like Figure 1 , Figure 2 As shown, optionally, the sealing element 110 further includes: a fixing portion 115 , the fixing portion 115 radially protrudes from the inlet portion 113 to the outside of the cavity 110 a , and at least the fixing portion 115 is used to fix the sealing element 110 .

[0121] like Figure 5a As shown, the fixing portion 115 can also achieve sealing between the end cover 130 and the bin body 120 to limit the liquid in the receiving bin 122 from overflowing through between the end cover 130 and the bin body 120 .

[0122] like Figure 5a , Figure 7a , Figures 7b to 9b As shown, the fixing portion 115 can be clamped between two components of the receiving structure to fix the sealing element 110 in the receiving structure. When the sealing element 110 includes the fixing portion 115, the inlet portion 113 and the sealing portion 114, the inlet portion 113 is located between the fixing portion 115 and the sealing portion 114.

[0123] The sealing element 110 may also be fixed to the receiving structure in other ways, and is not limited to the above-mentioned way of fixing the sealing element 110 using the fixing portion 115 .

[0124] like Figure 4 and Figure 5a As shown, the embodiment of the present disclosure also provides a receiving structure of a cleaning device, the receiving structure comprising: a bin body 120 and a sealing element 110 of the above embodiment. A gap 125 between the outer wall of the sealing element 110 and the inner wall of the receiving bin 122.

[0125] The bin body 120 has an escape portion 123 and a guide portion 124. The escape portion 123 can be used to accommodate the inlet portion 113 of the sealing element 110, and the guide portion 124 can be used to accommodate the sealing portion 114 of the sealing element 110. There is the above-mentioned gap 125 between the escape portion 123 and the outside of the sealing element 110, and the gap can provide space for the deformation and displacement of the sealing element 110. The escape portion 123 has an installation port 120a, and the sealing element 110 can enter the receiving bin 122 through the installation port 120a.

[0126] The guide portion 124 has a first water outlet 121, and the liquid entering the receiving chamber 122 from the liquid storage tank can flow out from the first water outlet 121. The inner wall of the guide portion 124 is transitionally matched with the sealing portion 114 of the sealing element 110. When the sealing element 110 is deformed, the sealing portion 114 of the sealing element 110 can move along the inner wall of the guide portion 124. At this time, the inner wall of the guide portion 124 has a guiding effect on the deformation of the sealing element 110.

[0127] When the liquid storage tank is sealed against the sealing element 110, the sealing element 110 is sealed against the inner wall of the receiving bin 122. Thus, the sealing element 110 can play a sealing role, limiting the liquid in the receiving bin 122 from overflowing from between the inner wall of the receiving bin 122 and the liquid storage tank, thereby ensuring that the liquid in the receiving bin 122 can only flow out from the first water outlet 121.

[0128] The direction in which the liquid storage tank is inserted into the receiving structure is the same as the axial direction of the sealing element 110 facing the first water outlet 121 .

[0129] like Figure 4 , Figures 5a to 9b As shown, optionally, the receiving structure further includes an end cover 130 , the end cover 130 has a second avoidance opening 131 communicating with the installation opening 120 a , and the fixing portion 115 of the sealing element 110 is located between the end cover 130 and the bin body 120 .

[0130] When assembling the receiving structure, the sealing element 110 may be first placed into the receiving bin 122 through the installation opening 120 a , and then the end cover 130 may be installed so that the fixing portion 115 of the sealing element 110 is fixed between the end cover 130 and the bin body 120 .

[0131] The installation opening 120a, the first avoidance opening (110b) and the second avoidance opening 131 are interconnected to allow the plug-in component to pass through. Without limitation, the installation opening 120a, the first avoidance opening (110b) and the second avoidance opening 131 can be coaxially distributed.

[0132] Optionally, the bin body 120 further includes an extension portion 126. The extension portion 126 radially extends from the avoidance portion 123 to the outside of the receiving bin 122, and the extension portion 126 has a mounting hole 126a. The end cover 130 has a mounting post 134, and the mounting post 134 is located in the mounting hole 126a. The mounting post 134 is inserted into the mounting hole 126a, which can at least limit the circumferential rotation of the end cover 130 relative to the bin body 120.

[0133] Without limitation, when used in a cleaning device, pressure will be applied between the end cover 130 plate and the bin body 120, and the axial movement of the end cover 130 plate relative to the bin body 120 will also be restricted, so that the fixed part 115 of the sealing element 110 can be restricted between the end cover 130 plate and the bin body 120.

[0134] The number of the mounting holes 126a and the mounting posts 134 can be multiple, and multiple means two or more. Generally, the number of the mounting holes 126a is equal to the number of the mounting posts 134, and one mounting post 134 is installed in one mounting hole 126a.

[0135] The plurality of mounting holes 126 a and the plurality of mounting posts 134 are spaced apart and distributed along the circumference of the end cover 130 (also along the circumference of the sealing element 110 ).

[0136] like Figure 5a As shown, according to some optional embodiments, the end cover 130 includes: a docking portion 133 and a non-return rib 132; the docking portion 133 has a second avoidance opening 131; the non-return rib 132 is located in the avoidance portion 123, and extends from the docking portion 133 along the axial direction of the second avoidance opening 131 toward the bottom wall 122a of the receiving bin 122; the side wall of the inlet portion (113) of the sealing element 110 is located between the non-return rib 132 and the side wall of the receiving bin 122, and the fixing portion 115 is located between the docking portion 133 and the top of the receiving bin 122.

[0137] The inlet portion (113) of the sealing element 110 is sandwiched between the non-return rib 132 and the inner side wall of the escape portion 123. Since the non-return rib 132 extends from the docking portion 133 along the axial direction of the second escape opening 131 toward the bottom wall 122a of the receiving chamber 122, that is, the non-return rib 132 extends along the axis O1 direction of the sealing element 110, the non-return rib 132 can limit the movement of the sealing element 110 toward the first end of the inlet portion (113) during the process of pulling out the liquid storage tank, and further, the non-return rib 132 can prevent the sealing element 110 from being turned out of the chamber body 120 during the process of pulling out the liquid storage tank.

[0138] The top of the receiving bin 122 refers to the top of the bin body 120. Optionally, the mounting hole 126a is provided in the docking portion 133.

[0139] like Figure 5a , Figures 7a to 9b As shown, according to some optional embodiments, the receiving structure further includes: a bottom bracket 140, and the bottom bracket 140 is located in the receiving bin 122. The bottom bracket 140 is at least partially located in the cavity (110a) of the sealing element 110. When the liquid storage tank is inserted into the sealing element 110, the bottom bracket 140 can lift the blocking structure (i.e., the valve body described in the subsequent embodiments) in the water tank assembly 150 to release the blocking structure of the second water outlet 151b (also the water outlet of the liquid storage tank) on the water tank assembly 150, so that the liquid in the water tank assembly 150 can enter the receiving bin 122 through the liquid storage tank, thereby realizing the function of the bottom bracket 140 triggering the water discharge of the liquid storage tank.

[0140] like Figure 5a As shown, optionally, the bottom bracket 140 is located between the sealing element 110 and the bottom wall 122a of the receiving bin 122, and opposite ends of the bottom bracket 140 are respectively in contact with the bottom 110c of the sealing element 110 and the bottom wall 122a of the receiving bin 122. The bottom bracket 140 is limited between the bottom 110c of the sealing element 110 and the bottom wall 122a of the receiving bin 122, and the bottom can be fixed inside the bin body 120 without additional fixings, which is conducive to simplifying the assembly operation and simplifying the structure of the receiving structure.

[0141] like Figure 5b As shown, in some optional embodiments, the bottom bracket 140 includes: an upper protrusion 141 for releasing the blockage of the second water outlet 151b by the blocking structure, a lower protrusion 142 for supporting the height, and a filter portion 143 located between the upper protrusion 141 and the lower protrusion 142, and the two ends of the filter portion 143 are respectively abutted against the bottom 110c of the sealing element 110 and the bottom wall 122a of the receiving bin 122.

[0142] The filter part 143 is used to filter the fluid entering the receiving bin 122 from the installation port 120a of the self-avoiding part 123, and the filtered fluid then flows out through the first water outlet 121 to reduce the problem of excessive liquid impurities flowing out of the first water outlet 121 and causing blockage of the pipeline. When the filter part is blocked, or there are many impurities remaining in the filter part 143, the bottom bracket 140 can be taken out from the bin body 120 by lifting the upper protrusion 141 and deforming the sealing element 110 through the filter part to clean the impurities on the filter part 143. The cleaned bottom bracket 140 can be put back into the receiving bin 122 for use. In the process of putting the bottom bracket 140 back into the receiving bin 122, because the sealing element 110 is deformable and flexible, the bottom bracket 140 can be installed by pressing down the bottom bracket 140.

[0143] Exemplarily, the filter unit 143 may be a filter net.

[0144] like Figure 5a and Figure 5b As shown, in some optional embodiments, the difference between the height of the upper protrusion 141 and the height of the lower protrusion 142 is less than or equal to a preset difference, and / or the shape of the upper protrusion 141 is the same as the shape of the lower protrusion 142. The preset difference can be 0 or close to 0, so that the height of the upper protrusion 141 and the height of the lower protrusion 142 are equal or approximately equal. The bottom bracket 140 of this structure can effectively prevent users from installing it upside down, and it is more convenient to disassemble and assemble the bottom bracket 140.

[0145] like Figure 6 and Figure 7a As shown, the embodiment of the present disclosure also provides a cleaning device, which includes: the receiving structure described in the above embodiment and a water tank assembly 150. The water tank assembly 150 has at least a plug-in state and a detachable state relative to the receiving structure, and the liquid storage tank is a partial structure of the water tank assembly 150.

[0146] The water tank assembly 150 is in a plugged state, and the water tank assembly 150 is in sealing contact with the sealing element 110; the water tank assembly 150 is in a disassembled state, and the water tank assembly 150 is separated from the receiving structure.

[0147] For example, Figure 7a It can be used as an exemplary structural diagram of the clean water tank 151 in a disassembled state. Or, Figure 9a and Figure 9b The figure can be used as an exemplary structural diagram of the clean water tank 151 in a plugged-in state.

[0148] Exemplarily, when the liquid storage tank is a clean water tank 151 , the component that can be inserted into the sealing element 110 is specifically a water outlet pipe 152 of the clean water tank 151 .

[0149] When the water tank assembly 150 changes from the split state to the plug-in state, the liquid storage tank will be inserted. When the water tank assembly 150 changes from the plug-in state to the split state, the liquid storage tank will be pulled out.

[0150] In some optional embodiments, the water tank assembly 150 includes: a clean water tank 151, a water outlet pipe 152, a valve body and an elastic member 154. The clean water tank 151 includes a water tank body and a water outlet pipe 152, the water tank body has a chamber 151a for containing liquid and a second water outlet 151b; the water outlet pipe 152 is connected to the water outlet; the valve body is located in the water outlet pipe 152; and both ends of the elastic member 154 are respectively connected to the water outlet pipe 152 and the valve body.

[0151] The water tank assembly 150 is in a disassembled state, and the valve body is sealedly connected to the inner wall of the water outlet pipe 152; the water tank assembly 150 is in a plugged state, the valve body is abutted against the bottom bracket 140, and there is a water outlet gap between the valve body and the water outlet pipe 152 for liquid to pass through, and the elastic member 154 is in a state of storing elastic restoring force, and the elastic restoring force is used to drive the valve body to restore the sealed connection with the inner wall of the sealing tube when the liquid storage tank is restored to the disassembled state.

[0152] Exemplarily, the elastic member 154 may be a spring or a spring sheet.

[0153] For example, Figure 8b As shown, the valve body includes a valve core 153 and a sealing member 155, the valve core 153 is located in the water outlet pipe 152, and the sealing member 155 is located and installed on the valve core 153. The clean water tank 151 assembly 150 is in a disassembled state, and the sealing member 155 is sealed with the valve core 153 and the water outlet pipe 152 respectively. At this time, the valve body is sealedly connected with the inner wall of the water outlet pipe 152 to prevent the liquid in the cavity of the clean water tank 151 from flowing to the water outlet pipe 152 through the second water outlet 151b.

[0154] Exemplarily, the sealing member 155 may be in the shape of a ring, such as a circular ring, a square ring, or a special-shaped ring, but is not limited thereto.

[0155] The clean water tank 151 assembly 150 is in a plugged-in state, such as Figure 9a and 9b As shown, the bottom bracket 140 lifts up the valve core 153, and the seal 155 is separated from the inner wall of the water outlet pipe 152. The liquid in the chamber 151a enters the water outlet pipe 152 through the second water outlet 151b along the gap between the valve core 153 and the water outlet pipe 152, and enters the receiving chamber 122 through the water outlet pipe 152, and finally flows to the water pump (not shown) through the first water outlet 121.

[0156] The water tank assembly 150 is in the plugged state, the valve core 153 is opened, and when the fluid flows into the receiving chamber 122, the inlet portion 113 of the sealing element 110 is located upstream of the fluid, and the sealing portion 114 is located downstream of the fluid. The fluid flows from the inlet portion 113 of the sealing element 110 to the sealing portion 114, and then flows from the sealing portion 114 to the first water outlet 121.

[0157] When the water tank assembly 150 is in the disassembled state, the elastic member 154 provides a pre-tightening force for the sealing connection between the valve body and the inside of the water outlet pipe 152 , thereby ensuring the reliability of the sealing connection between the valve body and the water outlet pipe 152 .

[0158] In the disclosed embodiment, the clean water tank 151 may be Figure 1a The roughly rectangular parallelepiped shape shown in FIG. 1 or the clean water tank 151 can also be as follows Figures 6 to 9b The roughly cylindrical shape shown.

[0159] Figure 1 The sealing method used in the cleaning equipment shown has high requirements on the assembly direction of the clean water tank. The clean water tank 01 needs to be inserted directly into the O-ring structure from the top. The clean water tank 01 is only fixed to the body by gravity. During use, the clean water tank 01 may fall and the valve body may loosen.

[0160] like Figure 1b As shown, in the embodiment of the present disclosure, opposite ends of the clean water tank 151 are abutted against the machine body, so that the clean water tank 151 can not only be fixed to the machine body 100 by gravity, but also the abutting part can be used to strengthen the connection between the water tank and the machine body 100, so that the clean water tank 151 is not easily separated from the machine body 100, thereby ensuring the reliability of the installation of the clean water tank 151 on the machine body 100.

[0161] like Figure 1b As shown, the body 100 has a mounting groove 103, and the clean water tank 151 is located in the mounting groove 103. Without limitation, the clean water tank 151 can be snap-fitted into the slot of the body by snap-fitting, and the slot can be opened on the inner wall of the mounting groove 103.

[0162] Moreover, the inlet portion of the sealing element 110 of the disclosed embodiment is in the shape of a cone with a larger top and a smaller bottom. The clean water tank 151 does not need to be inserted directly into the sealing element 110 from the top. The insertion direction of the clean water tank 151 can be straight in the vertical direction or at a certain angle to the vertical direction.

[0163] The cleaning device further includes a handheld vacuum cleaner part 102 mounted on the body 100, and a battery module 102a for power supply, wherein the battery module 102a is mounted on the handheld vacuum cleaner part 102. The water tank assembly further includes a sewage tank 156 for storing sewage generated during the cleaning process of the cleaning device, wherein the sewage tank 156 may be located between the handheld vacuum cleaner part 102 and the floor brush structure 160, and the clean water tank 151 and the sewage tank 156 may be located on opposite sides of the body 100, respectively.

[0164] Figure 1c The schematic diagram of an assembly process of the cleaning device is exemplarily shown. After the handheld vacuum part 102, the battery module 102a and the sewage tank 156 are installed on the body 100, the clean water tank 151 is installed on the body 100.

[0165] Figure 1c The direction of the middle arrow indicates the order of the installation steps. It can be understood that the installation steps of the cleaning device are not limited to this, and the installation order is not limited to this.

[0166] In some optional embodiments, such as Figure 8a and Figure 8b As shown, the water tank assembly 150 also has a trigger state relative to the receiving structure, and the trigger state is located before the plug-in state; Figure 7bIt can be used as other states between the split state and the triggered state. The water tank assembly 150 is in the triggered state, the liquid storage tank is in sealing contact with the protrusion 111, and the valve body and the bottom bracket 140 are in a separated state.

[0167] During the process of the water tank assembly 150 changing from the disassembled state to the plugged state, at the initial stage of contact between the protrusion 111 on the sealing element 110 and the liquid storage tank, there is a gap between the valve body and the bottom bracket 140, so that before the valve body is lifted up by the bottom bracket 140, that is, before the valve body loses its sealing effect on the second water outlet 151b, the protrusion 111 can be used to first achieve sealing with the liquid storage tank, and then the bottom bracket 140 can contact the valve body to prevent the liquid from flowing out before the sealing element 110 plays a sealing role.

[0168] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present invention and do not limit the scope of protection of the patent of the present invention.

Claims

1. A sealing element, characterized in that: The sealing element (110) comprises: a cavity (110a) and a first avoidance opening (110b) connected to the liquid storage tank, wherein the first avoidance opening (110b) is in communication with the cavity (110a); The outer wall of the sealing element (110) has a depression (112) formed by being recessed in the axial direction of the sealing element (110), and the inner wall of the sealing element (110) has a protrusion (111) protruding in the axial direction, the depression (112) corresponds to the protrusion (111), and the protrusion (111) is used to trigger the sealing contact between the liquid storage tank and the sealing element (110).

2. The sealing element according to claim 1, characterized in that The sealing element (110) comprises: An inlet portion (113), having the first avoidance opening (110b) at a first end; a sealing portion (114) connected to the second end of the inlet portion (113), wherein the sealing portion (114) and the inlet portion (113) together form the cavity (110a); wherein the second end is an opposite end to the first end; The protrusion (111) is located between the inlet portion (113) and the sealing portion (114), and the protrusion (111) is used to trigger the sealing portion (114) to be in sealing contact with the liquid storage tank.

3. The sealing element according to claim 2, characterized in that The inner diameter of at least a part of the inlet portion (113) gradually increases from the protrusion (111) toward the first avoidance opening (110b); and / or the inner diameter of at least a part of the sealing portion (114) gradually increases from the protrusion (111) toward a direction away from the first avoidance opening (110b).

4. The sealing element according to claim 3, characterized in that The angle between the plane where the inner wall (113a) of the inlet portion (113) is located and the horizontal plane is 0° to 50°; The angle between the plane where the inner wall (114a) of the sealing portion (114) is located and the horizontal plane is 70° to 90°.

5. The sealing element according to claim 2, characterized in that There is a gap between the inlet portion (113) and the liquid storage tank.

6. The sealing element according to claim 2, characterized in that The sealing element (110) further comprises: A fixing portion protrudes radially outward from the inlet portion (113) toward the cavity (110a); at least the fixing portion is used to fix the sealing element (110).

7. The sealing element according to claim 2, characterized in that When a fluid passes through the sealing element (110), the inlet portion (113) is upstream of the fluid relative to the sealing portion (114).

8. The sealing element according to claim 1, characterized in that The sealing element (110) has a basic inner diameter in the axial direction and at least one matching inner diameter; the inner diameter of the circle where the protrusion (111) is located is the matching inner diameter, and the portion of the inner wall of the sealing element (110) where the protrusion (111) is not provided has the basic inner diameter, The sealing element (110) is made of a flexible material, so that the matching inner diameter can change the inner diameter value in response to the plugging action of the liquid storage tank; Preferably, the fitting inner diameter is smaller than the basic inner diameter; Preferably, the number of the matching inner diameters is at least two, and in the direction in which the liquid storage tank is inserted into the sealing element (110), at least two of the matching inner diameters gradually increase.

9. A receiving structure for a cleaning device, characterized in that: The receiving structure comprises: The bin body (120) has a first water outlet (121), a receiving bin (122) and an installation port (120a); The sealing element (110) according to any one of claims 1 to 8 is located in the receiving bin (122), and the mounting opening (120a) is used for allowing the sealing element (110) to pass through; There is a gap (125) between the outer wall of the sealing element (110) and the inner wall of the receiving bin (122); When the liquid storage tank is in sealing contact with the sealing element (110), the sealing element (110) is in sealing contact with the inner wall of the receiving bin (122); Preferably, the warehouse body (120) comprises: The avoidance portion (123) has the gap (125) with the outside of the sealing element (110), and the avoidance portion (123) has the installation opening (120a); a guide portion (124), wherein an inner wall of the guide portion (124) is transitionally matched with the sealing portion (114) of the sealing element (110), and the guide portion (124) has the first water outlet (121); Preferably, the receiving structure further includes: a bottom bracket (140) located in the receiving bin (122), the bottom bracket (140) being at least partially located in the cavity (110a) of the sealing element (110), and the bottom bracket (140) being used to trigger water discharge from the liquid storage tank; Preferably, the bottom bracket (140) is located between the bottom (110c) of the sealing element and the bottom wall (122a) of the receiving bin (122), and opposite ends of the bottom bracket (140) are respectively in contact with the bottom (110c) of the sealing element and the bottom wall of the receiving bin (122); Preferably, the receiving structure further comprises: an end cover (130), the end cover (130) having a second avoidance opening (131) communicating with the installation opening (120a); The fixed portion of the sealing element (110) is located between the end cover (130) and the bin body (120); Preferably, the end cap (130) comprises: The docking portion (133) has the second avoidance opening (131); a non-return rib (132) located in the avoidance portion (123), the non-return rib (132) extending from the docking portion (133) along the axial direction of the second avoidance opening (131) toward the bottom wall of the receiving bin (122); The side wall of the inlet portion (113) of the sealing element (110) is located between the non-return rib (132) and the side wall of the receiving bin (122), and the fixing portion is located between the docking portion (133) and the top of the receiving bin (122); Preferably, the warehouse body (120) comprises: An extending portion (126) extends radially from the avoidance portion (123) toward the outside of the receiving bin (122), the extending portion having a mounting hole (126a), the end cover (130) having a mounting column (134), and the mounting column (134) is located in the mounting hole (126a); Preferably, the bottom bracket (140) comprises: an upper protrusion (141) for releasing the blocking structure from blocking the water outlet of the liquid storage tank, a lower protrusion (142) for supporting the height, and a filter portion (143) located between the upper protrusion (141) and the lower protrusion (142), and two ends of the filter portion (143) are respectively in contact with the bottom (110c) of the sealing element (110) and the bottom wall (122a) of the receiving bin (122); Preferably, the difference between the height of the upper protrusion (141) and the height of the lower protrusion (142) is less than or equal to a preset difference, and / or the shape of the upper protrusion (141) is the same as the shape of the lower protrusion (142).

10. A cleaning device, characterized in that: The cleaning equipment comprises: The receiving structure of the cleaning device according to claim 9; A clean water tank assembly (150) has at least a plug-in state and a disassembled state relative to the receiving structure; Wherein, the clean water tank assembly (150) is in the plug-in state, and the clean water tank assembly (150) is in sealing contact with the sealing element (110); the clean water tank assembly (150) is in the disassembled state, and the clean water tank assembly (150) is separated from the receiving structure; The liquid storage tank is a partial structure of the clean water tank assembly (150); Preferably, the clean water tank assembly (150) comprises: A clean water tank (151), the clean water tank (151) comprising a water tank body and a water outlet pipe (152), the water tank body having a chamber (151a) for accommodating liquid and a second water outlet (151b); the water outlet pipe (152) is in communication with the second water outlet (151b), the clean water tank (151) is the liquid storage tank, wherein the clean water tank (151) is connected to the receiving structure via the water outlet pipe (152); A valve body, located in the water outlet pipe (152); An elastic member (154), two ends of which are respectively connected to the water outlet pipe (152) and the valve body; The clean water tank assembly (150) is in the disassembled state, and the valve body is sealedly connected to the inner wall of the water outlet pipe (152) to block the second water outlet (151b); The clean water tank assembly (150) is in the plugged state, the valve body is in contact with the bottom bracket (140), a water outlet gap for liquid to pass through is provided between the valve body and the water outlet pipe (152), and the elastic member is in a state of storing elastic restoring force, and the elastic restoring force is used to drive the valve body to restore the sealed connection with the inner wall of the sealing tube when the liquid storage tank is restored to the split state; Preferably, the clean water tank assembly (150) also has a trigger state relative to the receiving structure, and the trigger state is located before the plug-in state; The clean water tank assembly (150) is in the triggered state, the liquid storage tank is in sealing contact with the protrusion (111), and the valve body and the bottom bracket (140) are in a separated state.

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