Liquid storage device and cleaning equipment

Abstract

The invention discloses a liquid storage device and cleaning equipment, the liquid storage device comprises a clear water tank, a sewage tank and a conveying assembly, and a first liquid storage tank is arranged in the clear water tank; the sewage tank is of a flexible tank body structure and is nested in the first liquid storage tank, a second liquid storage tank is arranged in the sewage tank, the second liquid storage tank is communicated with the first liquid storage tank, and the volume of the second liquid storage tank can be reduced to a first form or increased to a second form relative to the volume of the first liquid storage tank; the first form is a form that the outer wall surface of the second liquid storage tank is at least partially separated from the inner wall surface of the first liquid storage tank, and the second form is a form that the inner wall surface of the first liquid storage tank is filled with the outer wall surface of the second liquid storage tank; the conveying assembly is communicated with the first liquid storage tank and the second liquid storage tank, and the conveying assembly is at least used for discharging liquid stored in the first liquid storage tank and pumping negative pressure to the second liquid storage tank. According to the invention, the problems of large occupied volume and high construction cost of the base station are solved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning systems, and in particular to a liquid storage device and a cleaning device. Background Art

[0002] At present, common cleaning equipment includes floor scrubbers, mops, etc. Using cleaning equipment to clean up garbage and stains on the ground or desktop can improve cleaning efficiency and free the user's hands. After completing the cleaning work, the cleaning equipment will return to the base station for charging, replenishing clean water, and discharging sewage. Among them, the base station is equipped with a clean water tank for storing clean water and a sewage tank for storing sewage. Since the base station is equipped with two water tanks, the base station occupies a large volume and has a high construction cost. Summary of the invention

[0003] The main purpose of the present application is to provide a liquid storage device and a cleaning device to solve the problems of large occupied volume and high construction cost of base stations in the background technology.

[0004] According to one aspect of the present application, a liquid storage device is provided, comprising:

[0005] A clean water tank, wherein a first liquid storage tank is arranged in the clean water tank;

[0006] A sewage tank, the sewage tank is a flexible box structure and is nested in the first liquid storage tank, a second liquid storage tank is arranged in the sewage tank, the second liquid storage tank is connected with the first liquid storage tank, the volume of the second liquid storage tank can be reduced to a first form or increased to a second form relative to the volume of the first liquid storage tank, the first form is a form in which the outer wall surface of the second liquid storage tank is at least partially separated from the inner wall surface of the first liquid storage tank, and the second form is a form in which the outer wall surface of the second liquid storage tank fills the inner wall surface of the first liquid storage tank;

[0007] A conveying component is connected to the first liquid storage tank and the second liquid storage tank, and the conveying component is at least used to discharge the liquid stored in the first liquid storage tank and to draw negative pressure into the second liquid storage tank.

[0008] Furthermore, the clean water tank comprises:

[0009] A box body, wherein the first liquid storage tank is arranged in the box body;

[0010] A connecting piece, the connecting piece is connected to the box body and is located at the notch of the first liquid storage tank, the connecting piece is provided with an avoidance hole, the avoidance hole is communicated with the first liquid storage tank, the sewage tank penetrates into the first liquid storage tank along the avoidance hole and is detachably sleeved with the connecting piece;

[0011] A box cover is connected to the box body and can cover or be away from the first liquid storage tank and the second liquid storage tank.

[0012] Furthermore, a connecting flange is provided on the outer side wall of the sewage tank, and the connecting flange is located at the notch of the second liquid storage tank close to the box cover and is detachably connected to the connecting piece; and / or a buckling structure is provided between the connecting piece and the box body, and the connecting piece is detachably buckled with the box body through the buckling structure.

[0013] Furthermore, a sleeve structure is provided between the connecting member and the connecting flange, the connecting flange is detachably sleeved with the connecting member through the sleeve structure, and the sleeve structure is provided with a connecting channel, and the connecting channel connects the first liquid storage tank and the second liquid storage tank.

[0014] Further, the connecting channel includes a first channel and a communicating hole, and the sleeve structure includes:

[0015] a first sleeve protrusion, the first sleeve protrusion being protruded on a surface of the connecting member close to the box cover, the first channel being arranged in the first sleeve protrusion and communicating with the first liquid storage tank;

[0016] A first sleeve groove, wherein the first sleeve groove is arranged on a side of the connecting flange close to the connecting piece, the first sleeve groove is adapted to the first sleeve protrusion and sleeved on the first sleeve protrusion, and the connecting hole is arranged at the bottom of the first sleeve groove away from the first sleeve protrusion, and the connecting hole connects the second liquid storage tank and the first channel.

[0017] Further, a side of the connecting member close to the box cover is provided with an avoidance groove, the first sleeve protrusion is provided at the bottom of the avoidance groove, the avoidance hole is provided at the bottom of the avoidance groove and is staggered at the first sleeve protrusion, and the sleeve structure further includes:

[0018] A second sleeve protrusion, the second sleeve protrusion is located on a side of the connecting member close to the box cover and is surrounded to form the avoidance groove;

[0019] The second sleeve groove is arranged on the side of the connecting flange close to the connecting piece, the second sleeve groove is adapted to the second sleeve protrusion and sleeved on the second sleeve protrusion, and the first sleeve groove is located between the second sleeve groove and the second liquid storage tank.

[0020] Furthermore, the buckle structure comprises:

[0021] A buckle groove, the buckle groove is provided on at least one of the connecting member and the box body;

[0022] A buckle flange is provided on at least one of the connector and the box body, and the buckle flange is matched with the buckle groove and buckled in the buckle groove.

[0023] Furthermore, the clean water tank is also provided with a first interface, a second interface and a third interface, the first interface and the second interface are both communicated with the second liquid storage tank, the third interface is communicated with the first liquid storage tank, and the delivery component includes:

[0024] An air pumping member, the air pumping member is connected to the first interface, and the air pumping member is used to pump negative pressure or positive pressure into the second liquid storage tank;

[0025] A water pump is connected to the third interface.

[0026] Further, the second interface is located between the first interface and the third interface, the inner side wall of the box body is provided with a mounting platform, the mounting platform is located on the side of the connecting member away from the box cover, the connecting member is provided with a first connecting hole and a second connecting hole, and the conveying assembly further includes:

[0027] a first connecting pipe, the first connecting pipe being arranged on a side of the mounting platform close to the connecting member, the first connecting pipe being communicated with the first interface on a side away from the connecting member, and the first connecting pipe being passed through the second liquid storage tank along the first connecting hole on a side away from the mounting platform;

[0028] The second connecting tube is arranged on a side of the mounting platform close to the connecting piece, the side of the second connecting tube away from the connecting piece is connected to the second interface, and the side of the second connecting tube away from the mounting platform is penetrated into the second liquid storage tank along the second connecting hole.

[0029] On the other hand, the present application also provides a cleaning device, which includes the liquid storage device.

[0030] In the present application, the sewage tank of the liquid storage device is a flexible box structure and is sleeved in the first liquid storage tank of the clean water tank. A second liquid storage tank is arranged in the sewage tank, and the second liquid storage tank is connected to the first liquid storage tank. Among them, the volume of the second liquid storage tank can be reduced to a first form or increased to a second form relative to the volume of the first liquid storage tank. The first form is a form in which the outer wall surface of the second liquid storage tank is at least partially separated from the inner wall surface of the first liquid storage tank, and the second form is a form in which the outer wall surface of the second liquid storage tank fills the inner wall surface of the first liquid storage tank. While the second liquid storage tank of the sewage tank stores sewage, the first liquid storage tank of the clean water tank is filled with clean water. At this time, the sewage tank is in the first form under the pressure of the clean water. During or after the conveying component empties the clean water in the first liquid storage tank of the clean water tank, negative pressure can be pumped to the second liquid storage tank of the sewage tank through the conveying component, so that the second liquid storage tank continuously absorbs sewage under the action of negative pressure and the space becomes larger until the second liquid storage tank gradually fills the space in the first liquid storage tank. Therefore, the present application realizes a two-in-one clean and sewage tank by placing a sewage tank with a flexible structure inside a clean water tank, and the sewage tank and the clean water tank alternately store liquid. The liquid storage device is installed on the cleaning equipment, which can greatly optimize the spatial layout of the cleaning equipment, save the installation space of the cleaning equipment, and thus reduce the occupied volume of the cleaning equipment and reduce the construction cost. At the same time, since the second liquid storage tank is connected to the first liquid storage tank, the air pressure between the second liquid storage tank and the first liquid storage tank can be kept balanced. During the process of the conveying component pumping negative pressure to the second liquid storage tank, the sewage tank will not have a tendency to deform and collapse, that is, it is prevented from preventing the sewage tank from being unable to fill the space in the first liquid storage tank due to collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 A schematic diagram of the structure of a liquid storage device provided in one embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the liquid storage device after the box cover is opened;

[0034] Figure 3 for Figure 2 The top view after removing the box cover;

[0035] Figure 4 for Figure 3 AA section view;

[0036] Figure 5 for Figure 4 A magnified schematic diagram of part B;

[0037] Figure 6 for Figure 3 Schematic diagram of the decomposition of

[0038] Figure 7 Schematic diagram of the internal structure of the sewage tank;

[0039] Figure 8 Schematic diagram of the external structure of the sewage tank;

[0040] Fig. 9 is a structural schematic diagram of a connecting piece;

[0041] Fig.10 for Fig. 9 Bottom view of

[0042] Fig.11 This is a schematic diagram of the structure of the clean water tank.

[0043] The above drawings include the following reference numerals:

[0044] 10. Clean water tank; 101. First liquid storage tank; 11. Box body; 111. Mounting platform; 112. Boss; 113. First abutment platform; 114. Second abutment platform; 115. Annular groove; 12. Connector; 120. Avoidance hole; 121. Avoidance groove; 122. First connection hole; 123. Second connection hole; 13. Box cover; 14. First interface; 15. Second interface; 16. Third interface; 20. Sewage tank; 201. Second liquid storage tank; 21. Connecting flange; 22. The third connecting hole; 30. The conveying assembly; 31. The first connecting tube; 32. The second connecting tube; 33. The third connecting tube; 40. The snap-fit ​​structure; 41. The snap-fit ​​groove; 42. The snap-fit ​​flange; 50. The socket structure; 501. The connecting channel; 5011. The first channel; 5012. The connecting hole; 51. The first socket protrusion; 52. The first socket groove; 53. The second socket protrusion; 54. The second socket groove; 60. The limiting structure; 61. The plug-in protrusion; 62. The socket. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0048] Since installing two water tanks in the base station will make the base station occupy a large volume and have a high construction cost. In order to solve the above problems, the first embodiment of the present invention provides a liquid storage device, see Figures 1 to 11 The liquid storage device includes a clean water tank 10, a dirty water tank 20 and a conveying assembly 30. Figures 4 to 6 as well as Fig.11 As shown, the clean water tank 10 is provided with a first liquid storage tank 101, and the first liquid storage tank 101 is used to store at least clean water, and can also store a cleaning liquid formed by a mixture of cleaning liquid and clean water. Figures 2 to 7 As shown, the sewage tank 20 is a flexible box 11 structure and is nested in the first liquid storage tank 101. A second liquid storage tank 201 is provided in the sewage tank 20, and the second liquid storage tank 201 can be used to store sewage. The second liquid storage tank 201 is connected to the first liquid storage tank 101, so that the air pressure between the second liquid storage tank 201 and the first liquid storage tank 101 is balanced during the process of the second liquid storage tank 201 being pumped with negative pressure, and the second liquid storage tank 201 will not be compressed due to the existence of negative pressure.

[0049] Among them, since the sewage tank 20 is a flexible box 11 structure, the volume of the second liquid storage tank 201 can be reduced to a first form or increased to a second form relative to the volume of the first liquid storage tank 101. The first form is a form in which the outer wall surface of the second liquid storage tank 201 is at least partially separated from the inner wall surface of the first liquid storage tank 101. When the first liquid storage tank 101 is gradually filled with clean water, the volume of the second liquid storage tank 201 will gradually decrease to the first form. The second form is a form when the outer wall surface of the second liquid storage tank 201 fills the inner wall surface of the first liquid storage tank 101. When the clean water or cleaning liquid stored in the first liquid storage tank 101 is discharged outside the liquid storage device (such as discharged into the clean water box of the sweeper), the volume of the second liquid storage tank 201 will gradually increase to the second form. Of course, the volume of the second liquid storage tank 201 can also be increased to be between the first form and the second form. At this time, the second liquid storage tank 201 and the first liquid storage tank 101 can both store a certain amount of liquid. In this regard, the volume change of the second liquid storage tank 201 when the second liquid storage tank 201 and the first liquid storage tank 101 alternately store liquid can be determined according to specific circumstances, and this embodiment does not make a sole limitation here. The sewage tank 20 in this embodiment can specifically include one of a silicone box 11, a polyvinyl box 11, a rubber box 11, a waterproof textile box 11, etc.

[0050] The conveying component 30 is connected to the first liquid storage tank 101 and the second liquid storage tank 201, and the conveying component 30 is at least used to discharge the liquid stored in the first liquid storage tank 101 and to pump negative pressure to the second liquid storage tank 201. The conveying component 30 can specifically discharge the liquid in the first liquid storage tank 101 into the clean water box of a sweeper, mop and other devices. The conveying component 30 can pump the sewage cleaned by the sweeper, mop and other devices into the second liquid storage tank 201, and / or pump the sewage in the base station cleaning tank into the second liquid storage tank 201, so as to store the sewage through the second liquid storage tank 201, and discharge it to the sewer or sewage treatment system after a certain amount of sewage is stored.

[0051] It can be seen that in this embodiment, the sewage tank 20 of the liquid storage device is a flexible box 11 structure and is sleeved in the first liquid storage tank 101 of the clean water tank 10. The sewage tank 20 is provided with a second liquid storage tank 201, and the second liquid storage tank 201 is connected with the first liquid storage tank 101. The volume of the second liquid storage tank 201 can be reduced to a first form or increased to a second form relative to the volume of the first liquid storage tank 101. The first form is a form in which the outer wall surface of the second liquid storage tank 201 is at least partially separated from the inner wall surface of the first liquid storage tank 101, and the second form is a form in which the outer wall surface of the second liquid storage tank 201 fills the inner wall surface of the first liquid storage tank 101. While the second liquid storage tank 201 of the sewage tank 20 stores sewage, the first liquid storage tank 101 of the clean water tank 10 is filled with clean water. At this time, the sewage tank 20 is in the first form under the pressure of the clean water. During or after the conveying component 30 evacuates the clean water in the first liquid storage tank 101 of the clean water tank 10, negative pressure can be pumped to the second liquid storage tank 201 of the sewage tank 20 through the conveying component 30, so that the second liquid storage tank 201 continuously absorbs sewage under the negative pressure and the space becomes larger until the second liquid storage tank 201 gradually fills up the space in the first liquid storage tank 101. Therefore, the present application realizes the two-in-one clean and dirty water tank 20 by sleeve-mounting the sewage tank 20 with a flexible structure in the clean water tank 10, and the sewage tank 20 and the clean water tank 10 store liquid alternately. The liquid storage device is installed on the cleaning equipment (such as a base station), which can greatly optimize the spatial layout of the cleaning equipment, save the installation space of the cleaning equipment, and thus reduce the occupied volume of the cleaning equipment and reduce the construction cost. At the same time, since the second liquid storage tank 201 is connected to the first liquid storage tank 101, the air pressure between the second liquid storage tank 201 and the first liquid storage tank 101 can be kept balanced. During the process of the conveying component 30 pumping negative pressure on the second liquid storage tank 201, the sewage tank 20 will not have a tendency to deform and collapse, that is, it is prevented that the sewage tank 20 cannot fill the space in the first liquid storage tank 101 due to collapse.

[0052] See also Figures 2 to 6The clean water tank 10 in this embodiment includes a box body 11, a connector 12 and a box cover 13. The first liquid storage tank 101 is arranged in the box body 11. The connector 12 is connected to the box body 11 and is located at the notch of the first liquid storage tank 101. A avoidance hole 120 is arranged in the connector 12, and the avoidance hole 120 is communicated with the first liquid storage tank 101, so that the sewage tank 20 can penetrate into the first liquid storage tank 101 along the avoidance hole 120 and be detachably connected with the connector 12. This can facilitate the user to disassemble the sewage tank 20 to dump the sewage, or to inspect and replace the sewage tank 20 and the clean water tank 10. The box cover 13 is connected to the box body 11 and can cover or stay away from the first liquid storage tank 101 and the second liquid storage tank 201. When the tank cover 13 covers the first liquid storage tank 101 and the second liquid storage tank 201, it can not only prevent external debris from falling into the clean water tank 10 and the sewage tank 20 to cause blockage or damage to the fallen debris, but also ensure that the first liquid storage tank 101 and the second liquid storage tank 201 can efficiently discharge and extract liquid in a relatively closed space.

[0053] like Figure 7 and Figure 8 As shown, the outer wall of the sewage tank 20 is provided with a connecting flange 21, which is located at the notch of the second liquid storage tank 201 close to the tank cover 13 and is detachably connected with the connecting piece 12. Therefore, in this embodiment, after the sewage tank 20 is placed into the first liquid storage tank 101 in a direction close to the first liquid storage tank 101, the connecting flange 21 of the sewage tank 20 can be connected with the connecting piece 12, which is convenient to operate and saves time and effort.

[0054] In some embodiments, the connector 12 and the housing 11 may be an integral structure or a split and detachable structure. To further improve the convenience of assembling the sewage tank 20 and the clean water tank 10, the connector 12 and the housing 11 are preferably a split and detachable structure in this embodiment. Figure 5 As shown, a buckle structure 40 is provided between the connecting member 12 and the box body 11 in this embodiment, and the connecting member 12 is detachably buckled with the box body 11 through the buckle structure 40. Therefore, in this embodiment, the connecting flange 21 on the outer side of the sewage tank 20 can be detachably sleeved with the connecting member 12, and then the connecting member 12 can be detachably buckled with the box body 11 through the buckle structure 40, so that the assembly between the sewage tank 20 and the clean water tank 10 is more efficient and convenient, and the assembly difficulty is lower.

[0055] like Figures 5 to 10As shown, a sleeve structure 50 is provided between the connecting member 12 and the connecting flange 21, and the connecting flange 21 is detachably sleeved with the connecting member 12 through the sleeve structure 50. The sleeve structure 50 is provided with a connecting channel 501, and the connecting channel 501 communicates with the first liquid storage tank 101 and the second liquid storage tank 201. Since the sleeve structure 50 is provided with the connecting channel 501, in this embodiment, after the connecting flange 21 is detachably sleeved with the connecting member 12 through the sleeve structure 50, the first liquid storage tank 101 and the second liquid storage tank 201 can be connected through the connecting channel 501, and there is no need to provide a corresponding connecting structure at other positions of the sewage tank 20 and the clean water tank 10 that are misplaced in the sleeve structure 50, thereby reducing the design difficulty of the sewage tank 20 and the clean water tank 10. After the sewage tank 20 is inserted into the clean water tank 10, there is no need to perform the operation of connecting the liquid storage tanks between the two again, thereby reducing the operation steps when the sewage tank 20 is inserted into the clean water tank 10, which can shorten the production process of the liquid storage device, improve the production efficiency and good product output rate of the liquid storage device, and make the cooperation between the sewage tank 20 and the clean water tank 10 more compact and reliable. Moreover, in this embodiment, clean water can be directly injected into the clean water tank 10 along the connecting channel 501, so there is no need to set an additional clean water injection port on the clean water tank 10.

[0056] See also Figures 7 to 10 In this embodiment, the connecting channel 501 includes a first channel 5011 and a connecting hole 5012. Figure 8 and Fig. 9 As shown, the sleeve structure 50 includes a first sleeve protrusion 51 and a first sleeve groove 52. The first sleeve protrusion 51 is protruding from the surface of the connecting member 12 near the box cover 13, and the first channel 5011 is arranged in the first sleeve protrusion 51 and communicates with the first liquid storage tank 101. It is convenient to open the first channel 5011 in the first sleeve protrusion 51. The first sleeve groove 52 is arranged on the side of the connecting flange 21 near the connecting member 12, and the first sleeve groove 52 is adapted to the first sleeve protrusion 51 and sleeved on the first sleeve protrusion 51. The communication hole 5012 is arranged at the bottom of the first sleeve groove 52 away from the first sleeve protrusion 51, and the communication hole 5012 communicates the second liquid storage tank 201 and the first channel 5011. In this embodiment, the first sleeve groove 52 is sleeved on the first sleeve protrusion 51 to firmly sleeve the sewage tank 20 on the connecting member 12, and at the same time, the second liquid storage tank 201 and the first liquid storage tank 101 are connected through the interconnecting connecting hole 5012 and the first channel 5011, so that the assembly is efficient and convenient.

[0057] like Fig. 9As shown, a side of the connecting member 12 close to the box cover 13 is provided with an avoidance groove 121, a first sleeve protrusion 51 is provided at the bottom of the avoidance groove 121, and the avoidance hole 120 is provided at the bottom of the avoidance groove 121 and offset from the first sleeve protrusion 51. In this embodiment, the first sleeve protrusion 51 and the avoidance hole 120 are provided in the avoidance groove 121 of the connecting member 12, which is not only convenient for processing, but also can save the space occupied by the connecting member 12 and the sewage tank 20 in the clean water tank 10, thereby reducing the overall volume of the liquid storage device on the basis of the limited storage capacity of the clean water tank 10, and thus can reduce the volume of the cleaning equipment (such as a base station) using the liquid storage device.

[0058] In order to make the connection between the sewage tank 20 and the connecting piece 12 more firm and reliable, Figure 8 and Fig. 9 As shown, the sleeve structure 50 in this embodiment also includes a second sleeve protrusion 53 and a second sleeve groove 54. The second sleeve protrusion 53 is located on the side of the connecting member 12 close to the box cover 13 and is surrounded to form an avoidance groove 121. The second sleeve groove 54 is arranged on the side of the connecting flange 21 close to the connecting member 12, and the second sleeve groove 54 is adapted to the second sleeve protrusion 53 and sleeved on the second sleeve protrusion 53, and the first sleeve groove 52 is located between the second sleeve groove 54 and the second liquid storage tank 201. It can be seen that this embodiment also improves the connection strength between the connecting flange 21 and the connecting member 12 by sleeve-arranging the second sleeve groove 54 on the second sleeve protrusion 53, so that the connection between the sewage tank 20 and the connecting member 12 is more firm and reliable. In the process of the conveying component 30 pumping negative pressure to the second liquid storage tank 201, the sewage tank 20 and the connecting member 12 are not easy to separate from each other, which ensures that the sewage tank 20 will not separate from the clean water tank 10, and improves the reliability of the overall structure of the liquid storage device.

[0059] In order to reduce the risk of the sewage tank 20 being separated from the clean water tank 10 in the vertical direction (i.e., the vertical direction from the tank body 11 to the tank cover 13), as shown in FIG. Figure 8 and Fig. 9As shown, a limiting structure 60 is further provided between the connecting member 12 and the connecting flange 21 of this embodiment, and the limiting structure 60 detachably limits the connecting flange 21 to the connecting member 12. Therefore, after the connecting flange 21 of the sewage tank 20 is sleeved on the connecting member 12 through the sleeve structure 50, the limiting structure 60 is provided in this embodiment to limit the connecting flange 21 to the connecting member 12, so as to prevent the connecting flange 21 from being separated from the connecting member 12 under stress or collision. For example, when a large amount of clean water is stored in the first liquid storage tank 101 and a squeezing force is generated toward the tank cover 13 on the connecting flange 21 of the sewage tank 20, the limiting structure 60 can ensure that the connecting flange 21 will not be separated from the connecting member 12 under the action of the squeezing force, thereby ensuring that the sewage tank 20 will not be separated from the clean water tank 10. After the liquid stored in the clean water tank 10 is discharged, the conveying assembly 30 can pump negative pressure to the second liquid storage tank 201 of the sewage tank 20, so that the sewage tank 20 can collect sewage in time, reduce the maintenance frequency of the liquid storage device, and improve the reliability of the liquid storage device.

[0060] The limiting structure 60 may specifically include a plurality of plug-in protrusions 61 and a plurality of plug-in holes 62. The plurality of plug-in protrusions 61 are arranged at intervals along the circumference of the avoidance groove 121 on the side of the second sleeve protrusion 53 away from the avoidance groove 121, and the plurality of plug-in holes 62 are arranged at intervals along the circumference of the avoidance groove 121 on the outer peripheral wall of the second sleeve groove 54 away from the avoidance groove 121. The plug-in holes 62 may penetrate the outer peripheral wall of the second sleeve groove 54 in a direction away from the avoidance groove 121 or may not penetrate, and the processing is simple and convenient. The plurality of plug-in protrusions 61 and the plurality of plug-in holes 62 are arranged in a one-to-one correspondence and inserted into the plug-in holes 62. When the sewage tank 20 is subjected to a squeezing force toward the tank cover 13, a reaction force that can offset the squeezing force will be generated between the plurality of plug-in protrusions 61 and the plurality of plug-in holes 62, thereby ensuring that the sewage tank 20 will not be separated from the connector 12, and improving the reliability of the sewage tank 20 and the clean water tank 10 in the liquid storage device when alternately storing water. Moreover, in this embodiment, the plug-in protrusion 61 is arranged on the second sleeve protrusion 53, and the socket 62 is arranged on the outer peripheral wall of the second sleeve groove 54. When the second sleeve groove 54 is sleeved on the second sleeve protrusion 53, multiple plug-in protrusions 61 can be plugged into multiple sockets 62 one by one, which is simple and convenient to operate.

[0061] In some embodiments, the buckle structure 40 provided between the connector 12 and the housing 11 includes a buckle groove 41 and a buckle flange 42. The buckle groove 41 is provided on at least one of the connector 12 and the housing 11. The buckle flange 42 is provided on at least the other of the connector 12 and the housing 11, and the buckle flange 42 is adapted to the buckle groove 41 and buckled in the buckle groove 41. Thus, in this embodiment, the connector 12 is installed on the housing 11 by buckling the buckle flange 42 and the buckle groove 41 with each other.

[0062] Specifically, the buckle flange 42 can be disposed on one side of the box body 11 close to the box cover 13 and located at the notch of the first liquid storage tank 101 and extending along the circumference of the first liquid storage tank 101. Fig.11 As shown, when processing the buckle flange 42, it is only necessary to open an annular groove 115 extending along the circumference of the box body 11 on the outer peripheral wall of the box body 11 near the box cover 13, and the buckle flange 42 can be the groove wall of the annular groove 115 near the first liquid storage tank 101, and the processing difficulty is low. The buckle groove 41 is set on the side of the connecting member 12 near the box body 11. When assembling, the buckle groove 41 on the connecting member 12 is buckled on the buckle flange 42 in the direction close to the box body 11, which is simple to operate and efficient and convenient to assemble. Moreover, in order to improve the compactness of the overall structure of the connecting piece 12, the snap-fit ​​groove 41 in the present embodiment is located on the side of the second sleeve protrusion 53 away from the second sleeve groove 54. While the snap-fit ​​groove 41 (virtual) is snapped with the snap-fit ​​flange 42 (real), the second sleeve protrusion 53 (real) is sleeved with the second sleeve groove 54 (virtual). Through this virtual-real stacked assembly method, not only the connection strength between the connecting piece 12 and the box body 11 and the connecting flange 21 can be further improved, but also the structural compactness of the connection between the sewage tank 20 and the clean water tank 10 can be improved, so that the space occupied by the connecting piece 12 between the clean water tank 10 and the sewage tank 20 is smaller, saving the installation space and the overall occupied volume of the liquid storage device.

[0063] The clean water tank 10 is also provided with a first interface 14, a second interface 15 and a third interface 16. The first interface 14 and the second interface 15 are both connected to the second liquid storage tank 201, and the third interface 16 is connected to the first liquid storage tank 101. The first interface 14, the second interface 15 and the third interface 16 are all located on the box body 11. The conveying assembly 30 in this embodiment includes an air suction member and a water pump. The air suction member is connected to the first interface 14, and the air suction member is used to pump negative pressure or positive pressure to the second liquid storage tank 201. The water pump is connected to the third interface 16. In addition, the second interface 15 is at least used to connect to the sewage box, which can be a device such as a sweeper or a mop, or a cleaning tank of a base station. After the cleaning tank cleans the drum or mop of the sweeper, mop and other equipment, the sewage generated in the cleaning tank is extracted into the second liquid storage tank 201 through the air suction member. The second interface 15 can also be connected to the sewage container of other equipment that needs to transfer sewage, and this embodiment does not make a sole limitation on this.

[0064] When it is necessary to extract clean water or cleaning liquid in the clean water tank 10 into a clean water box of a sweeper, mop or other equipment, the water pump is started to inject the liquid in the first liquid storage tank 101 into the clean water box along the third interface 16. As the liquid in the first liquid storage tank 101 decreases, the sewage tank 20, which is compressed by the liquid, will gradually return to its natural state to prepare for collecting sewage.

[0065] When it is necessary to collect sewage through the second liquid storage tank 201, this embodiment starts the air extraction member to pump negative pressure to the second liquid storage tank 201 along the first interface 14, and the air pressure in the second liquid storage tank 201 will be lower than the external environment. At this time, the sewage will enter the second liquid storage tank 201 along the second interface 15 under the action of negative pressure. In this process, since the second liquid storage tank 201 and the first liquid storage tank 101 are always connected, the second liquid storage tank 201 will not produce a large compression deformation under the action of negative pressure, which will cause the sewage to continue to enter the second liquid storage tank 201, thereby improving the reliability of the second liquid storage tank 201 when storing sewage. After the second liquid storage tank 201 of the sewage tank 20 is full of sewage, the sewage tank 20 can be taken out by opening the box cover 13 to dump the sewage into the sewer or sewage treatment system. In order to improve the user experience, the second interface 15 in this embodiment can also be used as a sewage outlet to communicate with the sewer or sewage treatment system. At this time, this embodiment can make the air pressure in the second liquid storage tank 201 greater than the external environment by causing the vacuum component to pump positive pressure into the second liquid storage tank 201. The sewage in the second liquid storage tank 201 will automatically flow to the sewer or sewage treatment system along the second interface 15 under the action of the positive pressure. The user does not need to open the box cover 13 to take out the sewage tank 20 to dump the sewage, thereby improving the user experience.

[0066] Combination Figure 1 and Fig.11It can be seen that the second interface 15 in this embodiment is located between the first interface 14 and the third interface 16, and the inner side wall of the box body 11 is provided with a mounting platform 111, and the mounting platform 111 is located on the side of the connecting member 12 away from the box cover 13. The box body 11 is formed with a boss 112 on the outer side of the mounting platform 111 away from the first liquid storage tank 101, and the first interface 14, the second interface 15 and the third interface 16 are all arranged on the side of the boss 112 away from the box cover 13. The connecting member 12 is provided with a first connecting hole 122 and a second connecting hole 123. The conveying assembly 30 also includes a first connecting pipe 31 and a second connecting pipe 32. The first connecting pipe 31 is arranged on the side of the mounting platform 111 close to the connecting member 12, and the side of the first connecting pipe 31 away from the connecting member 12 is connected to the first interface 14. The side of the first connecting pipe 31 away from the mounting platform 111 is penetrated into the second liquid storage tank 201 along the first connecting hole 122 and is sealed and connected to the sewage tank 20, thereby realizing the connection between the first interface 14 set in the clean water tank 10 and the second liquid storage tank 201, so that the suction part can pump negative pressure or positive pressure into the second liquid storage tank 201. The second connecting pipe 32 is arranged on the side of the mounting platform 111 close to the connecting member 12 and is spaced from the first connecting pipe 31. The side of the second connecting pipe 32 away from the connecting member 12 is connected to the second interface 15. The side of the second connecting pipe 32 away from the mounting platform 111 is penetrated into the second liquid storage tank 201 along the second connecting hole 123 and is sealed and connected to the sewage tank 20, so that the second interface 15 can inject sewage into the sewage tank 20 or discharge the sewage in the sewage tank 20 through the second connecting pipe 32. In this embodiment, the first interface 14 and the second interface 15 are connected to the second liquid storage tank 201 respectively through the first connecting pipe 31 and the second connecting pipe 32. When connected, the sewage tank 20 only needs to open a corresponding third connecting hole 22 for the first connecting pipe 31 and the second connecting pipe 32 to pass through the second liquid storage tank 201 to realize the collection and discharge of sewage, and the installation is simple and convenient. Of course, the conveying component 30 in this embodiment also includes a third connecting pipe 33, which is arranged on the mounting platform 111 and is located on the side of the second connecting pipe 32 away from the first connecting pipe 31. The third connecting pipe 33 is connected to the third interface 16 and can extend to the bottom of the first liquid storage tank 101, so that the liquid in the first liquid storage tank 101 can be discharged to other machines (such as a sweeper, a mop, etc.) along the third connecting pipe 33.

[0067] In addition, the mounting platform 111 is also provided with a first abutment platform 113 and a second abutment platform 114. The first abutment platform 113 is sleeved on the first connecting tube 31 and abuts against a side of the connecting member 12 close to the mounting platform 111, and the second abutment platform 114 is sleeved on the second connecting tube 32 and abuts against a side of the connecting member 12 close to the mounting platform 111, thereby improving the stability of the connecting member 12 after being connected to the box body 11.

[0068] The second embodiment of the present invention further provides a cleaning device, which includes a liquid storage device. The structure of the liquid storage device is specifically described in the first embodiment of the present invention, and will not be described in detail in this embodiment.

[0069] The cleaning equipment in this embodiment can specifically be a base station or a base station and at least one of a sweeper or a mop. The liquid storage device is installed in the base station. Since the sewage tank 20 of the flexible structure of the liquid storage device is arranged in the clean water tank 10, the sewage tank 20 and the clean water tank 10 can store liquid alternately, realizing the two-in-one clean and sewage tank 20. Installing the liquid storage device on the base station can greatly optimize the spatial layout of the base station, save the installation space of the base station, and thereby reduce the occupied volume of the base station and reduce the construction cost.

[0070] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0071] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0072] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid storage device, characterized in that: include: A clean water tank (10), wherein a first liquid storage tank (101) is provided in the clean water tank (10); A sewage tank (20), the sewage tank (20) being a flexible box (11) structure and being nested in the first liquid storage tank (101), a second liquid storage tank (201) being arranged in the sewage tank (20), the second liquid storage tank (201) being in communication with the first liquid storage tank (101), the volume of the second liquid storage tank (201) being able to be reduced to a first form or increased to a second form relative to the volume of the first liquid storage tank (101), the first form being a form in which an outer wall surface of the second liquid storage tank (201) and an inner wall surface of the first liquid storage tank (101) are at least partially separated, and the second form being a form in which the outer wall surface of the second liquid storage tank (201) fills the inner wall surface of the first liquid storage tank (101); A conveying component (30), wherein the conveying component (30) is connected to the first liquid storage tank (101) and the second liquid storage tank (201), and the conveying component (30) is at least used to discharge the liquid stored in the first liquid storage tank (101) and to draw negative pressure into the second liquid storage tank (201).

2. The liquid storage device according to claim 1, characterized in that: The clean water tank (10) comprises: A box body (11), wherein the first liquid storage tank (101) is arranged in the box body (11); a connecting piece (12), the connecting piece (12) being connected to the box body (11) and being located at a notch of the first liquid storage tank (101); a avoiding hole (120) being arranged in the connecting piece (12); the avoiding hole (120) being communicated with the first liquid storage tank (101); the sewage tank (20) being inserted into the first liquid storage tank (101) along the avoiding hole (120) and being detachably sleeved with the connecting piece (12); A box cover (13), wherein the box cover (13) is connected to the box body (11) and can cover or be away from the first liquid storage tank (101) and the second liquid storage tank (201).

3. The liquid storage device according to claim 2, characterized in that: The outer side wall of the sewage tank (20) is provided with a connecting flange (21), the connecting flange (21) is located at the notch of the second liquid storage tank (201) close to the tank cover (13) and is detachably connected to the connecting piece (12); and / or a buckling structure (40) is provided between the connecting piece (12) and the tank body (11), and the connecting piece (12) is detachably buckled to the tank body (11) via the buckling structure (40).

4. The liquid storage device according to claim 3, characterized in that: A sleeve structure (50) is provided between the connecting member (12) and the connecting flange (21), and the connecting flange (21) is detachably sleeved with the connecting member (12) via the sleeve structure (50). The sleeve structure (50) is provided with a connecting channel (501), and the connecting channel (501) connects the first liquid storage tank (101) and the second liquid storage tank (201).

5. The liquid storage device according to claim 4, characterized in that: The connecting channel (501) comprises a first channel (5011) and a communicating hole (5012), and the sleeve structure (50) comprises: a first sleeve-jointing protrusion (51), the first sleeve-jointing protrusion (51) being protrudingly disposed on a surface of the connecting member (12) on a side close to the box cover (13), the first channel (5011) being disposed in the first sleeve-jointing protrusion (51) and being in communication with the first liquid storage tank (101); A first sleeve groove (52), the first sleeve groove (52) is arranged on a side of the connecting flange (21) close to the connecting member (12), the first sleeve groove (52) is adapted to the first sleeve protrusion (51) and sleeved on the first sleeve protrusion (51), the connecting hole (5012) is arranged at the bottom of the first sleeve groove (52) away from the first sleeve protrusion (51), and the connecting hole (5012) connects the second liquid storage tank (201) and the first channel (5011).

6. The liquid storage device according to claim 5, characterized in that: A side of the connecting member (12) close to the box cover (13) is provided with an avoidance groove (121), the first sleeve protrusion (51) is arranged at the bottom of the avoidance groove (121), the avoidance hole (120) is arranged at the bottom of the avoidance groove (121) and is offset from the first sleeve protrusion (51), and the sleeve structure (50) further comprises: A second sleeve-jointing protrusion (53), the second sleeve-jointing protrusion (53) being located on a side of the connecting member (12) close to the box cover (13) and surrounding to form the avoidance groove (121); A second sleeve groove (54), the second sleeve groove (54) is arranged on a side of the connecting flange (21) close to the connecting member (12), the second sleeve groove (54) is adapted to the second sleeve protrusion (53) and sleeved on the second sleeve protrusion (53), and the first sleeve groove (52) is located between the second sleeve groove (54) and the second liquid storage tank (201).

7. The liquid storage device according to any one of claims 3 to 6, characterized in that: The buckle structure (40) comprises: A buckling groove (41), the buckling groove (41) being arranged on at least one of the connecting member (12) and the box body (11); A buckling flange (42), the buckling flange (42) is arranged on at least one of the connecting member (12) and the box body (11), and the buckling flange (42) is adapted to the buckling groove (41) and buckled in the buckling groove (41).

8. The liquid storage device according to any one of claims 2 to 6, characterized in that: The clean water tank (10) is further provided with a first interface (14), a second interface (15) and a third interface (16), the first interface (14) and the second interface (15) are both in communication with the second liquid storage tank (201), the third interface (16) is in communication with the first liquid storage tank (101), and the conveying assembly (30) comprises: A suction piece, the suction piece being in communication with the first interface (14), the suction piece being used to draw negative pressure or positive pressure into the second liquid storage tank (201); A water pump is connected to the third interface (16).

9. The liquid storage device according to claim 8, characterized in that: The second interface (15) is located between the first interface (14) and the third interface (16); an inner side wall of the box body (11) is provided with a mounting platform (111); the mounting platform (111) is located on a side of the connecting member (12) away from the box cover (13); a first connecting hole and a second connecting hole are provided on the connecting member (12); and the conveying assembly (30) further comprises: a first connecting tube (31), the first connecting tube (31) being arranged on a side of the mounting platform (111) close to the connecting piece (12), the side of the first connecting tube (31) away from the connecting piece (12) being connected to the first interface (14), and the side of the first connecting tube (31) away from the mounting platform (111) being passed through the second liquid storage tank (201) along the first connecting hole; A second connecting tube (32), the second connecting tube (32) being arranged on a side of the mounting platform (111) close to the connecting piece (12), the side of the second connecting tube (32) away from the connecting piece (12) being connected to the second interface (15), and the side of the second connecting tube (32) away from the mounting platform (111) being passed through the second connecting hole into the second liquid storage tank (201).

10. A cleaning device, characterized in that: The cleaning device comprises the liquid storage device according to any one of claims 1 to 9.

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