Liquid storage device and cleaning equipment

Abstract

The utility model 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 utility model, 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, in particular to a liquid storage device and a cleaning device. BACKGROUND

[0002] At present, common cleaning devices include floor cleaning machines, floor mopping machines and the like. Using cleaning devices to clean garbage, stains and the like on the ground or table top can improve cleaning efficiency and free the user's hands. After performing cleaning work, the cleaning device will return to the base station to charge, replenish clean water, discharge sewage and the like. 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. CONTENT OF THE UTILITY MODEL

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

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

[0005] a clean water tank, a first liquid storage groove being arranged in the clean water tank;

[0006] a sewage tank, the sewage tank being a flexible tank structure and being nested in the first liquid storage groove, a second liquid storage groove being arranged in the sewage tank, the second liquid storage groove being in communication with the first liquid storage groove, the volume of the second liquid storage groove being variable to a first mode or a second mode relative to the volume of the first liquid storage groove, the first mode being a mode in which the outer wall surface of the second liquid storage groove is at least partially separated from the inner wall surface of the first liquid storage groove, the second mode being a mode in which the outer wall surface of the second liquid storage groove fills the inner wall surface of the first liquid storage groove;

[0007] a conveying assembly, the conveying assembly being in communication with the first liquid storage groove and the second liquid storage groove, the conveying assembly being at least used to discharge the liquid stored in the first liquid storage groove and to draw negative pressure in the second liquid storage groove.

[0008] Further, the clean water tank comprises:

[0009] a tank body, the first liquid storage groove being arranged in the tank body;

[0010] a connecting piece, the connecting piece being connected with the tank body and being located at the groove opening of the first liquid storage groove, an avoiding hole being arranged in the connecting piece, the avoiding hole being in communication with the first liquid storage groove, the sewage tank being inserted into the first liquid storage groove along the avoiding hole and being detachably sleeved with the connecting piece;

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

[0012] Further, the outer wall of the sewage tank is provided with a connecting flange, which is located at the slot of the second liquid storage tank near the box cover and is detachably sleeved with 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] Further, a sleeving structure is provided between the connecting piece and the connecting flange, and the connecting flange is detachably sleeved with the connecting piece through the sleeving structure, and the sleeving structure is provided with a connecting channel, which communicates the first and second liquid storage tanks.

[0014] Further, the connecting channel includes a first channel and a communication hole, and the sleeving structure includes:

[0015] A first sleeving protrusion is protruded on the surface of the connecting piece near the box cover, and the first channel is arranged in the first sleeving protrusion and communicates with the first liquid storage tank;

[0016] A first sleeving groove is arranged on the side of the connecting flange near the connecting piece, the first sleeving groove is matched with the first sleeving protrusion and is sleeved on the first sleeving protrusion, the communication hole is arranged on the groove bottom of the first sleeving groove away from the first sleeving protrusion, and the communication hole communicates the second liquid storage tank and the first channel.

[0017] Further, the side of the connecting piece near the box cover is provided with an avoiding groove, the first sleeving protrusion is arranged on the groove bottom of the avoiding groove, the avoiding hole is arranged on the groove bottom of the avoiding groove and is located opposite to the first sleeving protrusion, and the sleeving structure further includes:

[0018] A second sleeving protrusion is located on the side of the connecting piece near the box cover and surrounds to form the avoiding groove;

[0019] A second sleeving groove is arranged on the side of the connecting flange near the connecting piece, the second sleeving groove is matched with the second sleeving protrusion and is sleeved on the second sleeving protrusion, and the first sleeving groove is located between the second sleeving groove and the second liquid storage tank.

[0020] Further, the buckling structure includes:

[0021] A buckling groove is arranged on at least one of the connecting piece and the box body;

[0022] A fastening flange is provided on at least one of the connector and the housing, and the fastening flange is adapted to the fastening groove and fastened in the fastening 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 connected to the second liquid storage tank, and the third interface is connected to the first liquid storage tank. The conveying assembly includes:

[0024] An air extraction device is connected to the first interface and is used to draw negative pressure or positive pressure into the second liquid storage tank.

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

[0026] Furthermore, the second interface is located between the first interface and the third interface, and a mounting platform is provided on the inner side wall of the housing. The mounting platform is located on the side of the connector opposite to the housing cover. The connector is provided with a first connecting hole and a second connecting hole. The conveying assembly further includes:

[0027] The first connecting pipe is disposed on the side of the mounting platform near the connector, the side of the first connecting pipe away from the connector is connected to the first interface, and the side of the first connecting pipe away from the mounting platform passes through the first connecting hole into the second liquid storage tank.

[0028] The second connecting pipe is disposed on the side of the mounting platform near the connector, and the side of the second connecting pipe away from the connector is connected to the second interface. The side of the second connecting pipe away from the mounting platform passes through the second connecting hole into the second liquid storage tank.

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

[0030] In the present application, the sewage tank of the liquid storage device is a flexible tank structure and is sleeved in the first liquid storage groove of the clean water tank, and the second liquid storage groove is arranged in the sewage tank and is in communication with the first liquid storage groove. The volume of the second liquid storage groove can be relatively smaller than the volume of the first liquid storage groove to the first mode or relatively larger than the volume of the first liquid storage groove to the second mode. The first mode is a mode in which the outer wall surface of the second liquid storage groove is at least partially separated from the inner wall surface of the first liquid storage groove, and the second mode is a mode in which the outer wall surface of the second liquid storage groove fills the inner wall surface of the first liquid storage groove. Between the storage of sewage in the second liquid storage groove of the sewage tank, the first liquid storage groove of the clean water tank is filled with clean water. At this time, the sewage tank is in the first mode under the extrusion of the clean water. During or after the clean water in the first liquid storage groove of the clean water tank is pumped out by the conveying assembly, negative pressure can be extracted from the second liquid storage groove of the sewage tank by the conveying assembly, so that the space for absorbing sewage in the second liquid storage groove is continuously increased under the action of negative pressure, until the second liquid storage groove gradually fills the space in the first liquid storage groove. Thus, by sleeving the flexible sewage tank in the clean water tank, the sewage tank and the clean water tank are alternately used for storing liquid, the two-in-one of the clean and sewage tanks is realized, the liquid storage device is installed on the cleaning equipment, the space arrangement of the cleaning equipment can be greatly optimized, the installation space of the cleaning equipment is saved, and then the occupied volume of the cleaning equipment can be reduced and the construction cost can be reduced. At the same time, since the second liquid storage groove is in communication with the first liquid storage groove, the air pressure between the second liquid storage groove and the first liquid storage groove can be kept balanced. During the process of extracting negative pressure from the second liquid storage groove by the conveying assembly, the sewage tank will not have the tendency of deformation and collapse, that is, the sewage tank cannot fill the space in the first liquid storage groove due to the collapse. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0032] Figure 1 The structure schematic view of the liquid storage device provided by an embodiment of the present application is shown in the figure;

[0033] Figure 2 The structure schematic view of the liquid storage device after the tank cover is opened is shown in the figure;

[0034] Figure 3 The Figure 2 The top view of the liquid storage device after the tank cover is removed is shown in the figure;

[0035] Figure 4 The Figure 3 The A-A sectional view of the liquid storage device is shown in the figure;

[0036] Figure 5 The Figure 4 The enlarged schematic view of the B part of the liquid storage device is shown in the figure;

[0037] Figure 6 TheFigure 3 a decomposition schematic view of the sewage tank;

[0038] Figure 7 a schematic view of an internal structure of the sewage tank;

[0039] Figure 8 a schematic view of an external structure of the sewage tank;

[0040] Figure 9 a schematic view of a connecting piece;

[0041] Figure 10 a bottom view of the sewage tank; Figure 9 a bottom view of the sewage tank;

[0042] Figure 11 a schematic view of a structure of the clean water tank.

[0043] In the above drawings, the following reference signs are used:

[0044] 10, clean water tank; 101, first liquid storage groove; 11, tank body; 111, mounting table; 112, boss; 113, first abutting table; 114, second abutting table; 115, annular groove; 12, connecting piece; 120, avoiding hole; 121, avoiding groove; 122, first connecting hole; 123, second connecting hole; 13, tank cover; 14, first interface; 15, second interface; 16, third interface; 20, sewage tank; 201, second liquid storage groove; 21, connecting flange; 22, third connecting hole; 30, conveying assembly; 31, first connecting pipe; 32, second connecting pipe; 33, third connecting pipe; 40, buckling structure; 41, buckling groove; 42, buckling flange; 50, sleeving structure; 501, connecting channel; 5011, first channel; 5012, communicating hole; 51, first sleeving protrusion; 52, first sleeving groove; 53, second sleeving protrusion; 54, second sleeving groove; 60, limiting structure; 61, insertion protrusion; 62, insertion hole. DETAILED DESCRIPTION

[0045] It should be noted that the embodiments and features in the embodiments herein can be combined with each other without conflict. The application will be described in detail below with reference to the drawings and in combination with the embodiments.

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

[0047] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the application unless otherwise specified. It should also be understood that the dimensions of the various parts shown in the drawings are not drawn to scale for ease of illustration. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification when appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further 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 view of this, in order to solve the above problems, the utility model provides a liquid storage device in the first embodiment, please see Figures 1 to 11 The liquid storage device comprises a clean water tank 10, a sewage tank 20 and a conveying assembly 30. As shown in Figures 4 to 6 and Figure 11 The clean water tank 10 is provided with a first liquid storage groove 101, and the first liquid storage groove 101 is used at least for storing clean water, and can also store a cleaning liquid mixed by clean water and cleaning liquid. As shown in Figures 2 to 7 The sewage tank 20 is a flexible tank body 11 structure and is nested in the first liquid storage groove 101, and the sewage tank 20 is provided with a second liquid storage groove 201, and the second liquid storage groove 201 can be used for storing sewage. The second liquid storage groove 201 is communicated with the first liquid storage groove 101, so that the air pressure between the second liquid storage groove 201 and the first liquid storage groove 101 is kept balanced during the process that the second liquid storage groove 201 is pumped to negative pressure, and the second liquid storage groove 201 will not be crushed due to the existence of negative pressure.

[0049] The second liquid storage tank 201 can be smaller in volume than the first liquid storage tank 101 in the first mode, or larger in volume than the first liquid storage tank 101 in the second mode. The first mode is a mode 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. The volume of the second liquid storage tank 201 gradually decreases to the first mode during the process in which the first liquid storage tank 101 is gradually filled with clean water. The second mode is a mode 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. The volume of the second liquid storage tank 201 gradually increases to the second mode during the process in which the clean water or cleaning liquid stored in the first liquid storage tank 101 is discharged to outside the liquid storage device (for example, to the clean water tank of the sweeper). Of course, the volume of the second liquid storage tank 201 can also be larger than the first mode and smaller than the second mode. At this time, the second liquid storage tank 201 and the first liquid storage tank 101 can both store a certain amount of liquid. The amount of change in the volume of the second liquid storage tank 201 during the process in which the second liquid storage tank 201 and the first liquid storage tank 101 alternately store liquid can be determined according to specific conditions, which is not uniquely limited in the embodiment. The sewage tank 20 in the embodiment can specifically include one of a silica gel tank 11, a polyvinyl tank 11, a rubber tank 11, and a waterproof textile tank 11.

[0050] The conveying assembly 30 is in communication with the first liquid storage tank 101 and the second liquid storage tank 201, and is used at least to discharge the liquid stored in the first liquid storage tank 101 and to draw negative pressure to the second liquid storage tank 201. The conveying assembly 30 can specifically discharge the liquid in the first liquid storage tank 101 to the clean water tank of the sweeper, the mop, or other devices. The conveying assembly 30 can draw the sewage cleaned by the sweeper, the mop, or other devices to the second liquid storage tank 201, and / or draw the sewage in the base station cleaning tank to the second liquid storage tank 201, so as to store the sewage in the second liquid storage tank 201. After the sewage is stored to a certain amount, it can be discharged to the sewer or sewage treatment system.

[0051] It can be seen that in the embodiment, the sewage tank 20 of the liquid storage device is a flexible tank body 11 structure and is sleeved in the first liquid storage groove 101 of the clean water tank 10, the second liquid storage groove 201 is arranged in the sewage tank 20, and the second liquid storage groove 201 is in communication with the first liquid storage groove 101. The volume of the second liquid storage groove 201 can be relatively small to the volume of the first liquid storage groove 101 to a first mode or relatively large to a second mode, the first mode is a mode in which the outer wall surface of the second liquid storage groove 201 is at least partially separated from the inner wall surface of the first liquid storage groove 101, and the second mode is a mode in which the outer wall surface of the second liquid storage groove 201 fills the inner wall surface of the first liquid storage groove 101. Between the second liquid storage groove 201 of the sewage tank 20 stores sewage, the first liquid storage groove 101 of the clean water tank 10 is filled with clean water, at this time, the sewage tank 20 is in the first mode under the extrusion of the clean water. In the process of or after the clean water in the first liquid storage groove 101 of the clean water tank 10 is pumped out by the conveying assembly 30, negative pressure can be pumped to the second liquid storage groove 201 of the sewage tank 20 by the conveying assembly 30, so that the space of the second liquid storage groove 201 continuously increases under the action of negative pressure, until the second liquid storage groove 201 gradually fills the space in the first liquid storage groove 101. Therefore, by sleeving the flexible structure of the sewage tank 20 in the clean water tank 10, the sewage tank 20 and the clean water tank 10 alternately store liquid, the two-in-one of the sewage tank 20 is realized, the liquid storage device is installed on the cleaning equipment (such as a base station), the space arrangement of the cleaning equipment can be greatly optimized, the installation space of the cleaning equipment is saved, and then the occupied volume of the cleaning equipment can be reduced and the construction cost can be reduced. At the same time, since the second liquid storage groove 201 is in communication with the first liquid storage groove 101, the air pressure between the second liquid storage groove 201 and the first liquid storage groove 101 can be kept balanced, and the sewage tank 20 will not have a tendency to deform and collapse in the process of the conveying assembly 30 pumping negative pressure to the second liquid storage groove 201, that is, the sewage tank 20 cannot fill the space in the first liquid storage groove 101 due to deformation and collapse.

[0052] See Figures 2 to 6The clean water tank 10 in the embodiment includes a tank body 11, a connecting piece 12, and a tank cover 13. A first liquid storage groove 101 is arranged in the tank body 11. The connecting piece 12 is connected with the tank body 11 and located at the groove opening of the first liquid storage groove 101. An avoiding hole 120 is arranged in the connecting piece 12, and the avoiding hole 120 is communicated with the first liquid storage groove 101, so that the sewage tank 20 can penetrate into the first liquid storage groove 101 along the avoiding hole 120 and be detachably sleeved with the connecting piece 12. This can facilitate the user to detach the sewage tank 20 to pour out the sewage, or to perform maintenance, replacement, and the like on the sewage tank 20 and the clean water tank 10. The tank cover 13 is connected with the tank body 11 and can cover or be away from the first liquid storage groove 101 and the second liquid storage groove 201. When the tank cover 13 covers the first liquid storage groove 101 and the second liquid storage groove 201, not only can the external sundries be prevented from falling into the clean water tank 10 and the sewage tank 20 to cause blockage of the two or damage to the fallen sundries, but also the first liquid storage groove 101 and the second liquid storage groove 201 can be ensured to efficiently realize liquid discharge and extraction in a relatively closed space.

[0053] As shown in Figure 7 and Figure 8 , the outer side wall of the sewage tank 20 is provided with a connecting flange 21, and the connecting flange 21 is located at the groove opening of the second liquid storage groove 201 close to the tank cover 13 and is detachably sleeved with the connecting piece 12. Thus, in the embodiment, after the sewage tank 20 is placed into the first liquid storage groove 101 in the direction close to the first liquid storage groove 101, the connecting flange 21 of the sewage tank 20 is sleeved with the connecting piece 12, which is convenient and time-saving and labor-saving.

[0054] In some embodiments, the connecting piece 12 and the tank body 11 can be an integral structure or a detachable structure. In order to further improve the convenience of assembly between the sewage tank 20 and the clean water tank 10, the connecting piece 12 and the tank body 11 in the embodiment are preferably a detachable structure. For this purpose, as shown in Figure 5 , the connecting piece 12 and the tank body 11 in the embodiment are provided with a buckling structure 40, and the connecting piece 12 is detachably buckled with the tank body 11 through the buckling structure 40. Thus, in the embodiment, the connecting flange 21 on the outer side of the sewage tank 20 can be detachably sleeved with the connecting piece 12, and then the connecting piece 12 is detachably buckled with the tank body 11 through the buckling structure 40, which can make the assembly between the sewage tank 20 and the clean water tank 10 more efficient and convenient, and the assembly difficulty is lower.

[0055] As shown in Figures 5 to 10As shown, the connecting piece 12 and the connecting flange 21 are provided with a sleeving structure 50, the connecting flange 21 is detachably sleeved with the connecting piece 12 through the sleeving structure 50, the sleeving structure 50 is provided with a connecting channel 501, the connecting channel 501 communicates the first liquid storage groove 101 and the second liquid storage groove 201. Since the sleeving structure 50 is provided with the connecting channel 501, after the connecting flange 21 is detachably sleeved with the connecting piece 12 through the sleeving structure 50, the first liquid storage groove 101 and the second liquid storage groove 201 can be communicated through the connecting channel 501, without the need to set corresponding communication structures at other positions of the sleeving structure 50 when the sewage tank 20 and the clean water tank 10 are mislocated, thereby reducing the design difficulty of the sewage tank 20 and the clean water tank 10. After the sewage tank 20 is sleeved into the clean water tank 10, the operation of communicating the liquid storage grooves between the two is not needed again, thereby reducing the operation steps when the sewage tank 20 is sleeved in 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, the embodiment can directly inject clean water into the clean water tank 10 along the connecting channel 501, so that an additional clean water injection port does not need to be set on the clean water tank 10.

[0056] Please refer to Figures 7 to 10 The connecting channel 501 in the embodiment includes a first channel 5011 and a communication hole 5012. As shown in Figure 8 and Figure 9 The sleeving structure 50 includes a first sleeving protrusion 51 and a first sleeving groove 52. The first sleeving protrusion 51 is protruded on the surface of the connecting piece 12 close to the tank cover 13, the first channel 5011 is arranged in the first sleeving protrusion 51 and communicates with the first liquid storage groove 101, and the first channel 5011 is arranged in the first sleeving protrusion 51 for convenient processing. The first sleeving groove 52 is arranged on the side of the connecting flange 21 close to the connecting piece 12, the first sleeving groove 52 is matched with the first sleeving protrusion 51 and is sleeved on the first sleeving protrusion 51, the communication hole 5012 is arranged on the groove bottom of the first sleeving groove 52 away from the first sleeving protrusion 51, and the communication hole 5012 communicates the second liquid storage groove 201 and the first channel 5011. The first sleeving groove 52 is sleeved on the first sleeving protrusion 51 in the embodiment, so as to firmly sleeve the sewage tank 20 on the connecting piece 12, and communicate the second liquid storage groove 201 and the first liquid storage groove 101 through the mutually communicated communication hole 5012 and the first channel 5011, thereby achieving efficient and convenient assembly.

[0057] As shown in Figure 9As shown, the connecting piece 12 is provided with an avoiding groove 121 on the side close to the tank cover 13, the first sleeving protrusion 51 is arranged on the groove bottom of the avoiding groove 121, and the avoiding hole 120 is arranged on the groove bottom of the avoiding groove 121 and is located opposite to the first sleeving protrusion 51. In this embodiment, the first sleeving protrusion 51 and the avoiding hole 120 are arranged in the avoiding groove 121 of the connecting piece 12, which not only facilitates the processing, but also saves the space occupied by the connecting piece 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 the volume of the cleaning equipment (such as a base station) using the liquid storage device can be reduced.

[0058] In order to make the connection between the sewage tank 20 and the connecting piece 12 more firm and reliable, as shown in Figure 8 and Figure 9 As shown, the sleeving structure 50 in this embodiment further includes a second sleeving protrusion 53 and a second sleeving groove 54. The second sleeving protrusion 53 is located on the side of the connecting piece 12 close to the tank cover 13 and surrounds to form the avoiding groove 121. The second sleeving groove 54 is arranged on the side of the connecting flange 21 close to the connecting piece 12, the second sleeving groove 54 is matched with the second sleeving protrusion 53 and is sleeved on the second sleeving protrusion 53, and the first sleeving groove 52 is located between the second sleeving groove 54 and the second liquid storage groove 201. As can be seen, the second sleeving groove 54 is further sleeved on the second sleeving protrusion 53 in this embodiment to improve the connection strength between the connecting flange 21 and the connecting piece 12, so that the connection between the sewage tank 20 and the connecting piece 12 is more firm and reliable. During the process of the delivery assembly 30 drawing negative pressure on the second liquid storage groove 201, the sewage tank 20 and the connecting piece 12 are not easy to be separated from each other, so that the sewage tank 20 is ensured not to be separated from the clean water tank 10, and the reliability of the overall structure of the liquid storage device is improved.

[0059] In order to reduce the risk of the sewage tank 20 being separated from the clean water tank 10 along the vertical direction (i.e. the vertical direction from the tank body 11 to the tank cover 13), as shown in Figure 8 and Figure 9As shown, the connecting piece 12 and the connecting flange 21 of the present embodiment are further provided with a limiting structure 60, which detachably limits the connecting flange 21 on the connecting piece 12. Thus, after the connecting flange 21 of the sewage tank 20 is sleeved on the connecting piece 12 through the sleeving structure 50, the present embodiment limits the connecting flange 21 on the connecting piece 12 through the limiting structure 60, preventing the connecting flange 21 from being separated from the connecting piece 12 under force or collision. When the first liquid storage groove 101 stores a large amount of clean water and an extrusion force towards the tank cover 13 is generated 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 piece 12 under the action of the extrusion 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 perform negative pressure suction on the second liquid storage groove 201 of the sewage tank 20, so that the sewage tank 20 can timely collect sewage, reduce the maintenance frequency of the liquid storage device, and improve the reliability of the liquid storage device.

[0060] The limiting structure 60 specifically includes a plurality of insertion protrusions 61 and a plurality of insertion holes 62. The plurality of insertion protrusions 61 are arranged on the side of the second sleeving protrusion 53 away from the avoiding groove 121 along the circumference of the avoiding groove 121, and the plurality of insertion holes 62 are arranged on the outer circumferential wall of the second sleeving recess 54 away from the avoiding groove 121 along the circumference of the avoiding groove 121. The insertion holes 62 can or can not penetrate the outer circumferential wall of the second sleeving recess 54 in a direction away from the avoiding groove 121, which is simple and convenient to process. The plurality of insertion protrusions 61 and the plurality of insertion holes 62 are arranged one-to-one and inserted into the insertion holes 62. When the sewage tank 20 is subjected to an extrusion force towards the tank cover 13, the plurality of insertion protrusions 61 and the plurality of insertion holes 62 will generate a counteracting force that can offset the extrusion force, thereby ensuring that the sewage tank 20 will not be separated from the connecting piece 12 and improving the reliability of the liquid storage device when the sewage tank 20 and the clean water tank 10 alternately store water. Moreover, the insertion protrusions 61 are arranged on the second sleeving protrusion 53, and the insertion holes 62 are arranged on the outer circumferential wall of the second sleeving recess 54. When the second sleeving recess 54 is sleeved on the second sleeving protrusion 53, the plurality of insertion protrusions 61 can be inserted one-to-one into the plurality of insertion holes 62, which is simple and convenient to operate.

[0061] In some embodiments, the buckling structure 40 arranged between the connecting piece 12 and the tank body 11 includes a buckling recess 41 and a buckling flange 42. The buckling recess 41 is arranged on at least one of the connecting piece 12 and the tank body 11. The buckling flange 42 is arranged on the other of the connecting piece 12 and the tank body 11, and the buckling flange 42 is adapted to the buckling recess 41 and buckled in the buckling recess 41. Thus, the connecting piece 12 is mounted on the tank body 11 through the buckling of the buckling flange 42 and the buckling recess 41.

[0062] The buckling flange 42 can be arranged on the side of the box body 11 close to the box cover 13 and in the slot of the first liquid storage groove 101 and extend along the circumference of the first liquid storage groove 101. Figure 11 As shown in the figure, when the buckling flange 42 is processed, only an annular groove 115 extending along the circumference of the box body 11 is opened on the outer circumferential wall of the side of the box body 11 close to the box cover 13, and then the buckling flange 42 can be the groove wall on the side of the annular groove 115 close to the first liquid storage groove 101, which is low in processing difficulty. The buckling groove 41 is arranged on the side of the connecting piece 12 close to the box body 11, and when assembled, the buckling groove 41 on the connecting piece 12 is buckled on the buckling 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 buckling groove 41 in the embodiment is located on the side of the second sleeve flange 53 away from the second sleeve groove 54. When the buckling groove 41 (virtual) and the buckling flange 42 (real) are buckled, the second sleeve flange 53 (real) and the second sleeve groove 54 (virtual) are sleeved. Through this virtual and real layering assembly method, the connection strength between the connecting piece 12, the box body 11 and the connecting flange 21 can be further improved, and the structural compactness of the connection between the sewage tank 20 and the clean water tank 10 can be improved, so that the connecting piece 12 occupies less space between the clean water tank 10 and the sewage tank 20, 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 in communication with the second liquid storage groove 201, and the third interface 16 is in communication with the first liquid storage groove 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 the embodiment includes an air extractor and a water pump. The air extractor is in communication with the first interface 14, and the air extractor is used to extract negative pressure or positive pressure to the second liquid storage groove 201. The water pump is in communication with the third interface 16. In addition, the second interface 15 is at least used to communicate with a sewage tank, which can be a cleaning tank of a base station or a cleaning tank of a sweeping machine, a mopping machine or the like. After the cleaning tank cleans the roller or mop cloth of the sweeping machine, the mopping machine or the like, the sewage generated in the cleaning tank is extracted to the second liquid storage groove 201 by the air extractor. The second interface 15 can also be in communication with the sewage container of other equipment that needs to transfer sewage, and the embodiment does not make a unique limitation in this regard.

[0064] When it is necessary to extract the liquid such as clean water or cleaning liquid in the clean water tank 10 to the clean water tank of the sweeping machine, the mopping machine or the like, the water pump is started to inject the liquid in the first liquid storage groove 101 to the clean water tank along the third interface 16. In the process that the liquid in the first liquid storage groove 101 becomes less, the sewage tank 20 with the liquid pressure will gradually recover to the natural state to prepare for collecting sewage.

[0065] When it is needed to collect sewage through the second liquid storage tank 201, the embodiment starts the air extractor to perform negative pressure extraction on the second liquid storage tank 201 through the first interface 14, and the air pressure in the second liquid storage tank 201 will be less 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 kept in communication, the second liquid storage tank 201 will not produce large deformation under the action of negative pressure to cause the sewage to be unable 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 stores full sewage, the sewage tank 20 can be taken out by opening the tank cover 13 to pour the sewage into the sewer or sewage treatment system. In order to improve the user experience, the second interface 15 in the embodiment can also be used as a sewage outlet to communicate with the sewer or sewage treatment system. At this time, the embodiment can perform positive pressure extraction on the second liquid storage tank 201 through the air extractor, so that the air pressure in the second liquid storage tank 201 is greater than the external environment. Then, 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 positive pressure, without the need for the user to open the tank cover 13 to take out the sewage tank 20 to pour the sewage, thereby improving the user experience.

[0066] In combination Figure 1 and Figure 11It can be seen that the second interface 15 in the embodiment is located between the first interface 14 and the third interface 16, the inner side wall of the box body 11 is provided with a mounting table 111, and the mounting table 111 is located on the side of the connecting piece 12 away from the box cover 13. The box body 11 is formed with a boss 112 on the outer side of the mounting table 111 away from the first liquid storage groove 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 piece 12 is provided with a first connecting hole 122 and a second connecting hole 123. The conveying assembly 30 further comprises a first connecting pipe 31 and a second connecting pipe 32. The first connecting pipe 31 is arranged on the side of the mounting table 111 close to the connecting piece 12, the side of the first connecting pipe 31 away from the connecting piece 12 is in communication with the first interface 14, and the side of the first connecting pipe 31 away from the mounting table 111 is arranged into the second liquid storage groove 201 along the first connecting hole 122 and is in sealed connection with the sewage tank 20, so that the first interface 14 arranged on the clean water tank 10 is in communication with the second liquid storage groove 201, and the air extraction member is convenient for extracting negative pressure or positive pressure from the second liquid storage groove 201. The second connecting pipe 32 is arranged on the side of the mounting table 111 close to the connecting piece 12 and is arranged in space with the first connecting pipe 31, the side of the second connecting pipe 32 away from the connecting piece 12 is in communication with the second interface 15, and the side of the second connecting pipe 32 away from the mounting table 111 is arranged into the second liquid storage groove 201 along the second connecting hole 123 and is in sealed connection with 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 the embodiment, the first interface 14 and the second interface 15 are respectively in communication with the second liquid storage groove 201 through the first connecting pipe 31 and the second connecting pipe 32, when in communication, only a third connecting hole 22 for the first connecting pipe 31 and the second connecting pipe 32 to be arranged into the second liquid storage groove 201 needs to be arranged on the sewage tank 20, so that the collection and discharge of the sewage can be realized, and the installation is simple and convenient. Of course, the conveying assembly 30 in the embodiment further comprises a third connecting pipe 33, the third connecting pipe 33 is arranged on the mounting table 111 and located on the side of the second connecting pipe 32 away from the first connecting pipe 31, the third connecting pipe 33 is in communication with the third interface 16 and can extend to the groove bottom of the first liquid storage groove 101, so that the liquid in the first liquid storage groove 101 can be discharged into other machines (such as a sweeping machine, a mopping machine and the like) through the third connecting pipe 33.

[0067] In addition, the mounting table 111 is further provided with a first abutting table 113 and a second abutting table 114. The first abutting table 113 is sleeved on the first connecting pipe 31 and abuts against the side of the connecting piece 12 close to the mounting table 111, and the second abutting table 114 is sleeved on the second connecting pipe 32 and abuts against the side of the connecting piece 12 close to the mounting table 111, so as to improve the stability of the connecting piece 12 after being connected with the box body 11.

[0068] The second embodiment of the utility model further provides a cleaning equipment, the cleaning equipment includes a liquid storage device.

[0069] The cleaning equipment in the embodiment can be at least one of a base station or a base station and a sweeping machine and a mopping machine, and the liquid storage device is installed in the base station, the flexible structure of the liquid storage device is sleeved with the sewage tank 20 in the clean water tank 10, the sewage tank 20 and the clean water tank 10 can alternately store liquid, the two-in-one of the sewage tank 20 is realized, and the liquid storage device is installed on the base station, so that the space arrangement of the base station can be greatly optimized, the installation space of the base station is saved, and then the occupied volume of the base station can be reduced and the construction cost can be reduced.

[0070] For the convenience of description, spatial relative terms such as "above", "upper", "on", "top", and the like can be used herein to describe the spatial relationship between one device or feature and another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "on" other devices or structures will be positioned "below" or "under" 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 spatial relative descriptions used herein are interpreted accordingly.

[0071] In addition, it should be noted that the use of "first", "second", and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0072] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A liquid storage device, characterized by, The utility model relates to a water purifying device, which comprises: a clean water tank (10) with a first liquid storage tank (101) arranged therein; a sewage tank (20) which is a flexible tank (11) structure and is nested in the first liquid storage tank (101), the sewage tank (20) is provided with a second liquid storage tank (201) arranged therein, the second liquid storage tank (201) is communicated with the first liquid storage tank (101), the volume of the second liquid storage tank (201) can be relatively small to the first form or larger to the second form of the volume of the first liquid storage tank (101), the first form is at least partially separated from the first liquid storage tank (101) inner wall surface of the second liquid storage tank (201) outer wall surface mode, the second form is when the second liquid storage tank (201) outer wall surface fills the first liquid storage tank (101) inner wall surface mode; a conveying assembly (30) communicated with the first liquid storage tank (101) and the second liquid storage tank (201), the conveying assembly (30) is used at least for discharging the liquid stored in the first liquid storage tank (101) and pumping negative pressure to the second liquid storage tank (201).

2. The liquid storage device of claim 1, wherein, The clean water tank (10) comprises: a tank body (11), the first liquid storage tank (101) is arranged in the tank body (11); a connecting piece (12) connected with the tank body (11) and located at the slot of the first liquid storage tank (101), the connecting piece (12) is provided with a avoiding hole (120) communicated with the first liquid storage tank (101), the sewage tank (20) penetrates into the first liquid storage tank (101) along the avoiding hole (120) and is detachably sleeved with the connecting piece (12); a tank cover (13) connected with the tank body (11) and coverable or away from the first liquid storage tank (101) and the second liquid storage tank (201).

3. The liquid storage device of claim 2, wherein, The outer side wall of the sewage tank (20) is provided with a connecting flange (21), the connecting flange (21) is located at the slot of the second liquid storage tank (201) close to the tank cover (13) and is detachably sleeved with the connecting piece (12); and / or, a buckling structure (40) is arranged between the connecting piece (12) and the tank body (11), the connecting piece (12) is detachably buckled with the tank body (11) through the buckling structure (40).

4. The liquid storage device of claim 3, wherein, A sleeving structure (50) is arranged between the connecting piece (12) and the connecting flange (21), the connecting flange (21) is detachably sleeved with the connecting piece (12) through the sleeving structure (50), the sleeving structure (50) is provided with a connecting channel (501), and the connecting channel (501) communicates the first liquid storage tank (101) and the second liquid storage tank (201).

5. The liquid storage device of claim 4, wherein, The connecting channel (501) comprises a first channel (5011) and a communication hole (5012), and the sleeving structure (50) comprises: A first sleeve protrusion (51) is protruded on the surface of the connecting piece (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 groove (101); A first sleeve groove (52) is arranged on the connecting flange (21) near the connecting piece (12), the first sleeve groove (52) is matched with the first sleeve protrusion (51) and is sleeved on the first sleeve protrusion (51), the communication hole (5012) is arranged on the groove bottom of the first sleeve groove (52) away from the first sleeve protrusion (51), and the communication hole (5012) communicates the second liquid storage groove (201) and the first channel (5011).

6. The liquid storage device of claim 5, wherein, The connecting piece (12) near the box cover (13) is provided with an avoiding groove (121), the first sleeve protrusion (51) is arranged on the groove bottom of the avoiding groove (121), the avoiding hole (120) is arranged on the groove bottom of the avoiding groove (121) and is located opposite to the first sleeve protrusion (51), and the sleeve structure (50) further comprises: A second sleeve protrusion (53) is located on the connecting piece (12) near the box cover (13) and surrounds to form the avoiding groove (121); A second sleeve groove (54) is arranged on the connecting flange (21) near the connecting piece (12), the second sleeve groove (54) is matched with the second sleeve protrusion (53) and is 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 groove (201).

7. The liquid storage device of any one of claims 3 to 6, wherein, The buckle structure (40) comprises: A buckle groove (41) is arranged on at least one of the connecting piece (12) and the box body (11); A buckle flange (42) is arranged on the other of the connecting piece (12) and the box body (11), and the buckle flange (42) is matched with the buckle groove (41) and buckled in the buckle groove (41).

8. The liquid storage device of any one of claims 2 to 6, wherein, 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) communicate with the second liquid storage groove (201), the third interface (16) communicates with the first liquid storage groove (101), and the conveying assembly (30) comprises: An air extractor, which communicates with the first interface (14) and is used for extracting negative pressure or positive pressure to the second liquid storage groove (201); A water pump, which communicates with the third interface (16).

9. The liquid storage device of claim 8, wherein, The second interface (15) is located between the first interface (14) and the third interface (16), and an inner side wall of the box body (11) is provided with a mounting table (111) located on a side of the connecting piece (12) away from the box cover (13), and the connecting piece (12) is provided with a first connecting hole and a second connecting hole, and the conveying assembly (30) further comprises: A first connecting pipe (31) is arranged on a side of the mounting table (111) close to the connecting piece (12), a side of the first connecting pipe (31) away from the connecting piece (12) is in communication with the first interface (14), and a side of the first connecting pipe (31) away from the mounting table (111) is arranged into the second liquid storage groove (201) along the first connecting hole. A second connecting pipe (32) is arranged on a side of the mounting table (111) close to the connecting piece (12), a side of the second connecting pipe (32) away from the connecting piece (12) is in communication with the second interface (15), and a side of the second connecting pipe (32) away from the mounting table (111) is arranged into the second liquid storage groove (201) along the second connecting hole.

10. A cleaning apparatus, characterized by The cleaning equipment comprises the liquid storage device according to any one of claims 1 to 9.

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