CN219766110U - A cleaning device and liquid injection machine - Google Patents

Abstract

This application provides a cleaning device and a liquid injection machine, which are used to clean the liquid injection nozzle in battery production. The cleaning device includes: a brushing component, a driving part and a blowing component. The brushing component and the liquid injection nozzle are detachably connected and can pass through The contact type brushes the liquid injection nozzle; the driving component is used to drive the brushing component to brush the liquid injection nozzle; the air blowing component cooperates with the brushing component to jointly clean the liquid injection nozzle to achieve cleaning of the liquid injection nozzle. When cleaning the liquid injection nozzle, the air blowing component is used to blow air into the liquid injection nozzle to blow the liquid injection nozzle, and the driver is used to drive the brushing assembly to contact brush the liquid injection nozzle. The cleaning method combines blowing and brushing to improve the cleaning effect of the liquid injection nozzle.

Description

A cleaning device and liquid injection machine

Technical field

The present application relates to the technical field of liquid injection machines, more specifically to a cleaning device, and also to a liquid injection machine provided with the cleaning device.

Background technique

With the rapid development of the lithium battery industry in recent years, when the battery injection machine is injecting liquid into the battery, the injection nozzle of the buffer cup (secondary cup) often has electrolyte residues. The existing technology generally uses DEC liquid. (Cleaning fluid) flushing, but the flushing effect is not ideal, there is often residue, and it will cause leakage during flushing, and the cleaning effect is poor, which affects the molding quality of the battery injection molding.

Utility model content

In view of this, this application provides a cleaning device. This application also provides a liquid injection machine including the above cleaning device.

This application provides the following technical solutions:

A cleaning device used to clean the filling nozzle in battery production, including:

A brushing component is detachably connected to the liquid injection nozzle and can brush the liquid injection nozzle through contact;

A driving component, connected to the brushing component, is used to drive the brushing component to scrub the liquid injection nozzle;

The air blowing assembly cooperates with the brushing assembly to jointly clean the liquid injection nozzle to achieve cleaning of the liquid injection nozzle.

Preferably, the brushing component includes:

transmission shaft;

A brushing member is provided on the transmission shaft and can be in contact with the liquid injection nozzle;

The driving member drives the transmission shaft to move to drive the brushing member to move relative to the liquid injection nozzle, thereby brushing the liquid injection nozzle.

Preferably, the transmission shaft rotates around its own axis to drive the brushing member to rotate, so that the brushing member can scrub the liquid injection nozzle.

Preferably, the axis of the transmission shaft is perpendicular or parallel to the axis of the liquid injection nozzle.

Preferably, the transmission shaft moves back and forth to drive the brushing member to move, so that the brushing member can brush the liquid injection nozzle.

Preferably, the brushing assembly further includes a receiving cavity for accommodating cleaning fluid. The receiving cavity is provided with a plurality of installation openings that are detachably abutted with the liquid injection nozzle. The transmission shaft and the brushing member are provided on In the accommodation cavity, when the transmission shaft drives the brushing component to move, the scrubbing component can carry the scrubbing liquid in the accommodation cavity to scrub the liquid injection nozzle.

Preferably, the cleaning device includes:

A liquid inlet valve is provided at the first end in the length direction of the accommodation cavity;

A drain valve is provided at the second end of the accommodation chamber in the length direction.

Preferably, the cleaning device further includes:

frame;

A liquid collection tray is provided on the frame body, and the liquid collection tray is used to collect liquid flowing out of the accommodation cavity.

Preferably, the side wall of the installation opening is a stepped side wall that can cooperate with the sealing edge on the liquid injection nozzle, and the sealing edge is used to prevent the cleaning liquid in the accommodation cavity from flowing out of the installation opening.

A liquid injection machine includes the above-mentioned cleaning device.

The cleaning device provided by this application is used to clean the liquid injection nozzle in battery production, including: a brushing component, a driving part and a blowing component. The brushing component is detachably connected to the liquid injection nozzle, and can brush the liquid injection nozzle through contact; drive The component is used to drive the brushing component to scrub the liquid injection nozzle; the air blowing component cooperates with the brushing component to jointly clean the liquid injection nozzle to achieve cleaning of the liquid injection nozzle. When cleaning the liquid injection nozzle, the air blowing component is used to blow air into the liquid injection nozzle to blow the liquid injection nozzle, and the driver is used to drive the brushing assembly to contact brush the liquid injection nozzle. The cleaning method combines blowing and brushing to improve the cleaning effect of the liquid injection nozzle.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only This is an embodiment of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without exerting creative efforts.

Figure 1 is a three-dimensional view of the cleaning device provided by the embodiment of the present application;

Figure 2 is a cross-sectional view of the brushing assembly and driving member at Figure 1A-A;

Figure 3 is an enlarged view of the liquid injection nozzle in Figure 2.

In Figures 1-3:

1-Brushing component, 11-Drive shaft, 12-Brushing parts, 13-Accommodating cavity, 131-Installation port, 2-Driving parts, 3-Drain valve, 4-Frame body, 5-Drainage tray, 6-Note Liquid nozzle, 61-sealing edge, 7-dispensing valve.

Detailed ways

This application provides a cleaning device. This application also provides a liquid injection machine including the above cleaning device.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

As shown in Figures 1 to 3, the embodiment of the present application provides a cleaning device for cleaning the liquid injection nozzle 6 in battery production, including a brushing component 1, a driving component 2 and an air blowing component.

The brushing component 1 and the liquid filling nozzle 6 are detachably connected, and the brushing component 1 can brush the liquid filling nozzle 6 through contact. The driving part 2 is connected to the brushing component 1, and the driving part 2 can drive the brushing component 1 to move relative to the liquid filling nozzle 6 , thereby realizing brushing of the liquid injection nozzle 6 .

It should be noted that the liquid injection nozzle 6 cleaned in this application refers to the liquid injection nozzle 6 involved in the battery production process, especially the liquid injection nozzle 6 located at the bottom of the buffer cup.

Regarding the cleaning process of the liquid injection nozzle 6 by the cleaning assembly, first, the air blowing assembly (not shown in the figure) blows air into the buffer cup to blow out the remaining electrolyte in the buffer cup from the liquid injection nozzle 6; then, The liquid valve (described below) injects a mixture of compressed air and cleaning fluid into the liquid injection nozzle 6 to purge the liquid injection nozzle 6; then, the liquid injection nozzle 6 is sprayed through the liquid inlet valve (will be described below) to the liquid injection nozzle 6. 6. The mixed liquid of compressed air and cleaning fluid is sprayed, and the accommodation cavity 13 (described below) that accommodates the brushing component 1 will accumulate a certain amount of cleaning fluid; finally, the driving member 2 drives the brushing component 1 to move, and during the movement of the brushing component 1 The cleaning liquid in the accommodation cavity 13 will be entrained to scrub the outer surface of the liquid injection nozzle 6 , thereby cleaning the liquid injection nozzle 6 .

Specifically, on the one hand, the air blowing assembly blows air to the liquid injection nozzle 6 to perform preliminary cleaning on the liquid injection nozzle 6; on the other hand, the driving member 2 drives the brushing assembly 1 to move relative to the liquid injection nozzle 6 to inject liquid. Mouth 6 performs further cleaning.

With this arrangement, when cleaning the liquid injection nozzle 6, the cleaning method combining air blowing and brushing can achieve a better cleaning effect on the liquid injection nozzle 6 than the cleaning method using only air blowing in the prior art. The cleaning effect of the liquid injection nozzle 6 is better. When the buffer cup after cleaning the liquid injection nozzle 6 is filled with liquid for subsequent batteries, the molding quality of the battery will also be higher.

It should also be noted that as for the driving member 2 that drives the movement of the brushing assembly 1, the driving member 2 can be a driving motor or a driving handle. When the driving member 2 is a driving motor, the brushing assembly 1 is driven by the rotation of the driving member 2. When the driving member 2 is a driving handle, the handle is driven to move through human operation, thereby driving the brushing component 1 to move.

It should also be noted that the order of air blowing cleaning and brushing cleaning is not limited, and they can be carried out in an orderly manner or at the same time.

It should also be noted that the cleaning liquid does not flow from the inside of the cache cup through the liquid injection nozzle 6. If the cleaning liquid is used to flow through the liquid injection nozzle 6 into the cache cup, it will result in residual residue in the cache cup after the cleaning of the cache cup is completed. When the cleaning fluid is subsequently injected into the battery through the buffer cup, the purity of the electrolyte in the battery will decrease.

It should be noted that, on the one hand, the air blowing component can blow air into the buffer cup to blow out the remaining electrolyte in the buffer cup from the liquid injection nozzle 6 , and the air blowing assembly can also spray and compress the outer surface of the liquid injection nozzle 6 The mixed liquid of air and cleaning fluid can purge the liquid injection nozzle 6; on the other hand, the air blowing component only blows air into the buffer cup to blow out the remaining electrolyte in the buffer cup from the liquid injection nozzle 6, and blows the remaining electrolyte into the buffer cup. The cleaning liquid is sprayed onto the outer surface of the liquid nozzle 6 through a high-pressure pump. In some embodiments, the brushing assembly 1 includes a driving shaft 11 and a brushing part 12. The driving part 2 is drivingly connected to the driving shaft 11. The brushing part 12 is disposed on the driving shaft 11, and the brushing part 12 can contact the liquid injection nozzle 6, so that Achieve contact scrubbing. Specifically, the driving member 2 drives the transmission shaft 11 to move. The specific movement mode of the transmission shaft 11 can be rotation or movement. The corresponding transmission shaft 11 can drive the brushing member 12 to rotate or move relative to the liquid injection nozzle 6, thereby realizing liquid injection. Mouth 6 scrubbing.

Of course, according to different transmission modes of the transmission shaft 11, the corresponding arrangement of the brushing member 12 on the transmission shaft 11 is also different. For example: when the transmission shaft 11 is a rotating shaft, the brushing member 12 is provided on the transmission shaft 11. circumferentially; and when the transmission shaft 11 is a moving shaft, the brushing member 12 is arranged on the side of the transmission shaft 11 close to the liquid injection nozzle 6 .

The driving member 2 drives the transmission shaft 11 to move, so as to drive the brushing member 12 to move relative to the liquid injection nozzle 6, thereby brushing the liquid injection nozzle 6. This arrangement can improve the cleaning effect of the brushing member 12 on the liquid injection nozzle 6. The cleaning effect of liquid nozzle 6.

It should be noted that the brushing member 12 is a brush-type brushing member.

In some preferred solutions, the transmission shaft 11 is a rotating shaft that can rotate around its own axis. In this case, the driving member 2 is a rotating motor or a rotating handle, and the corresponding brushing member 12 is arranged along the circumference of the transmission shaft 11 . In this arrangement, the driving member 2 drives the transmission shaft 11 to rotate, which in turn drives the scrubbing member 12 to rotate. The rotating scrubbing member 12 will continuously scrub the liquid injection nozzle 6 to clean the liquid injection nozzle 6 .

Moreover, the cleaning effect of the liquid injection nozzle 6 can also be improved by the rotation direction and frequency of the driving member 2. The driving member 2 can first drive the transmission shaft 11 to rotate clockwise, and then the driving member 2 drives the transmission shaft 11 to rotate counterclockwise, reciprocating. Rotate to improve the cleaning effect of the liquid injection nozzle 6.

Furthermore, the brushing assembly 1 also includes an accommodation cavity 13 (will be described later). The accommodation cavity 13 contains cleaning fluid for cleaning the liquid injection nozzle 6. Since the transmission shaft 11 is a rotating shaft, the rotating shaft drives the brushing member 12 in the accommodation cavity. When the liquid injection nozzle 6 is rotated within 13 seconds, the rotating scrubber 12 will entrain the cleaning liquid in the accommodation cavity 13 to scrub the liquid injection nozzle 6 , thereby further improving the cleaning effect of the brushing member 12 on the liquid injection nozzle 6 .

In some preferred solutions, while the transmission shaft 11 is set as the rotation axis, the axis of the transmission shaft 11 is further set perpendicular or parallel to the axis of the liquid injection nozzle 6 .

In this embodiment, an optional implementation is provided. The axis of the transmission shaft 11 is arranged perpendicularly to the axis of the liquid injection nozzle 6 (please refer to Figure 2). At this time, the brushing member 12 is arranged along the circumferential direction of the transmission shaft 11, In this arrangement, the part of the brushing member 12 that is in contact with the liquid injection nozzle 6 is arranged parallel to the axis of the liquid injection nozzle 6 , which has a better cleaning effect on the bottom of the liquid injection nozzle 6 .

This embodiment also provides another optional implementation. The axis of the transmission shaft 11 is arranged parallel to the axis of the liquid injection nozzle 6 (not shown in the figure). At this time, the brushing member 12 is also along the axis of the transmission shaft 11. Circumferentially arranged, in this arrangement, the part of the brushing member 12 in contact with the liquid injection nozzle 6 is arranged perpendicularly to the axis of the liquid injection nozzle 6, which has a better cleaning effect on the side of the liquid injection nozzle 6.

In addition, when the transmission shaft 11 is a rotation axis, the transmission shaft 11 can also be arranged in other ways. For example, there can be a certain angle between the axis of the transmission shaft 11 and the axis of the liquid injection nozzle 6 , and the angle can be from 0 to 90° or 90° to 180°, that is, the axis of the transmission shaft 11 is inclined relative to the axis of the liquid injection nozzle 6 .

In some preferred solutions, the transmission shaft 11 moves back and forth to drive the brushing member 12 to move. The transmission shaft 11 is a moving shaft, and the brushing member 12 moves back and forth to achieve cyclic brushing of the liquid injection nozzle 6 .

In this embodiment, an optional implementation is provided. The axis of the transmission shaft 11 is arranged perpendicularly to the axis of the liquid injection nozzle 6. At this time, in order to improve the scrubbing effect, the scrubbing member 12 is arranged on the transmission shaft 11 close to the liquid injection nozzle. On one side of 6, the driving member 2 moves reciprocally to drive the transmission shaft 11 to reciprocate, and then drives the brushing member 12 to reciprocate, so as to brush the bottom of the liquid injection nozzle 6.

In this embodiment, another optional implementation is provided. The axis of the transmission shaft 11 is arranged parallel to the axis of the liquid injection nozzle 6. At this time, in order to improve the scrubbing effect, the scrubbing member 12 is also arranged close to the transmission shaft 11. On one side of the liquid injection nozzle 6, the driving member 2 moves reciprocally to drive the transmission shaft 11 to reciprocate, and then drives the brushing member 12 to reciprocate, so as to brush the side of the liquid injection nozzle 6.

This embodiment also provides another optional implementation. When the transmission shaft 11 is a moving axis, there may be a certain angle between the axis of the transmission shaft 11 and the axis of the liquid injection nozzle 6 , and the angle may be 0 to 90° or 90° to 180°, that is, the axis of the transmission shaft 11 is tilted relative to the axis of the liquid injection nozzle 6 .

Furthermore, the driving member 2 can be a trolley that moves back and forth along the guide rail, thereby driving the transmission shaft 11 to move back and forth.

It should be noted that the movement mode of the transmission shaft 11 is not limited, and the movement mode may be one of linear movement, arcuate movement, or a combination thereof.

In some embodiments, the brushing assembly 1 further includes a receiving cavity 13 for containing cleaning fluid. The receiving cavity 13 is provided with a plurality of installation openings 131 that can be detachably contacted with the liquid injection nozzle 6 . The transmission shaft 11 and the scrubber 12 are provided in the receiving cavity 13 . In the cavity 13 , when the transmission shaft 11 drives the scrubber 12 to move, the scrubber 12 can carry the cleaning liquid in the accommodation cavity 13 to scrub the liquid injection nozzle 6 .

Specifically, the accommodation cavity 13 that accommodates the cleaning liquid is detachably connected to the liquid injection nozzle 6. The accommodation cavity 13 is provided with a plurality of installation ports 131 that are detachably connected to the multiple liquid injection nozzles 6. The multiple installation ports 131 can be multiple. The filling nozzle 6 provides an installation location. The transmission shaft 11 and the brushing member 12 are arranged inside the accommodation cavity 13. When the transmission shaft 11 is a rotation axis and the axis of the transmission shaft 11 is perpendicular to the axis of the liquid injection nozzle 6, the driving member 2 drives the brushing member 12 on the transmission shaft 11 to rotate. At this time, the scrubber 12 rotating with the transmission shaft 11 will carry the cleaning fluid in the accommodation cavity 13 to scrub the liquid injection nozzle 6 .

Compared with the solution of only brushing the liquid injection nozzle 6 through the brushing part 12, since the transmission shaft 11 in the above solution will carry the cleaning liquid to brush the liquid injection nozzle 6 during the movement of the brushing part 12, a receiving cavity 13 is provided to accommodate the cleaning liquid. The solution will definitely have a better cleaning effect on the liquid injection nozzle 6, and the provision of the containing cavity 13 can improve the reuse rate of the cleaning liquid and avoid the waste of resources.

Of course, when the transmission shaft 11 is a rotating shaft and there is an angle between the axis of the transmission shaft 11 and the axis of the liquid injection nozzle 6 , the scrubber 12 will also carry part of the cleaning liquid to scrub the liquid injection nozzle 6 .

In some embodiments, the cleaning device includes a liquid inlet valve and a liquid discharge valve 3. The liquid inlet valve (not shown in the figure) is provided at the first end in the length direction of the accommodation chamber 13; the liquid discharge valve 3 is provided at the The second end of the accommodation cavity 13 in the length direction.

Specifically, please refer to Figure 2. The brushing component 1 is arranged in a rectangular parallelepiped shape, and is provided with a plurality of installation ports 131 that provide installation positions for the liquid injection nozzle 6. The liquid inlet valve is provided at the first end of the length direction of the accommodation cavity 13. The drain valve 3 is provided at the other end of the length direction of the accommodation cavity 13. The liquid inlet valve is used to input cleaning liquid into the accommodation cavity 13, and the drain valve 3 is used to drain the waste liquid after cleaning is completed.

In addition, a plurality of liquid inlet valves may be provided, and multiple air blowing devices spray a mixed liquid of compressed air and cleaning liquid to the plurality of liquid injecting nozzles 6 through the plurality of liquid inlet valves.

In this solution, in a preferred embodiment, it is preferable that the liquid inlet valve is arranged at the top end of the accommodation cavity 13 and the liquid discharge valve 3 is arranged at the bottom end of the accommodation cavity 13 .

By arranging the liquid inlet valve at the first end of the accommodating cavity 13 in the length direction and the liquid discharge valve 3 at the second end of the accommodating cavity 13 in the length direction, the cleaning device can improve the cleaning of the liquid injection nozzle 6 efficiency.

Furthermore, multiple groups of brushing components 1 can be provided to clean more groups of filling nozzles 6 of cache cups. Since multiple groups of brushing components 1 are provided, the liquid separation valve 7 is provided accordingly. It is used to separate multiple branches and inject cleaning fluid into each group of brushing components 1 respectively.

In addition, the liquid inlet valve can also have other structures or be set in other ways. The liquid inlet valve can also be set together with the air blowing assembly. When the air blowing assembly injects liquid into the liquid injection nozzle 6, the cleaning liquid will follow the air blowing device. The blown gas is injected into the accommodation cavity 13 together, and the further driving member 2 drives the transmission shaft 11 to drive the brushing member 12 to move, so as to clean the liquid injection nozzle 6 .

In some embodiments, the cleaning device further includes a rack body 4 and a liquid collecting tray 5 . The liquid collecting tray 5 is provided on the frame body 4 . The liquid collecting tray 5 is used to collect the liquid flowing out of the accommodation cavity 13 .

Specifically, the brushing assembly 1 is disposed on the frame 4, that is, the accommodating cavity 13 is disposed on the frame 4, and the liquid collecting tray 5 is disposed on the frame 4. The liquid collecting pan 5 collects the cleaning fluid discharged from the accommodating cavity 13 under unexpected circumstances. liquid.

It should be noted that during the cleaning process of the liquid injection nozzle 6 by the cleaning device, the liquid in the accommodation cavity 13 may be caused by problems such as the processing accuracy of the accommodation cavity 13 and the degree of fit between the injection nozzle 6 and the accommodation cavity 13 . Liquid flows out of the accommodation cavity 13 , and the liquid collection tray 5 is provided to collect the liquid that accidentally flows out of the accommodation cavity 13 .

The installation of the frame body 4 can improve the stability of the entire device, and the installation of the liquid collecting tray 5 to receive the cleaning fluid flowing out of the accommodation cavity 13 realizes recycling, avoids environmental pollution, and makes the cleaning device cleaner.

In addition, the cleaning device also includes a residual liquid tank (not shown in the figure). The cleaning liquid discharged from the drain valve 3 will be discharged into the residual liquid tank through the hose, thereby collecting the residual liquid.

In some embodiments, the side wall of the installation opening 131 is a stepped side wall that can cooperate with the sealing edge 61 on the liquid injection nozzle 6 . The sealing edge 61 is used to prevent the cleaning liquid in the accommodation cavity 13 from flowing out of the installation opening 131 .

Specifically, please refer to Figure 3. The installation port 131 of the accommodating cavity 13 and the liquid injection nozzle 6 are detachably abutted. Since there will be processing errors in the accommodating cavity 13 and the liquid injection nozzle 6, it cannot be guaranteed that the accommodating cavity 13 and the liquid injection nozzle 6 will be in contact with each other. The fit is perfect, and a sealing edge 61 is provided in the circumferential direction of the liquid injection nozzle 6. When the liquid injection nozzle 6 is installed in the accommodation cavity 13, the driving part 2 drives the brushing part 12 on the transmission shaft 11 to move, and the brushing part 12 carries the cleaning fluid. When the liquid filling nozzle 6 is brushed, the sealing edge 61 can prevent the cleaning liquid in the receiving cavity 13 from flowing out from the installation opening 131 .

A liquid injection machine includes the above-mentioned cleaning device. Please refer to the above content for the beneficial effects brought by the cleaning device of the liquid injection machine and will not be repeated here.

The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the drawings. As those skilled in the art will recognize, these components and devices may be connected, arranged, and configured in any manner. Words such as "includes," "includes," "having," etc. are open-ended terms that mean "including, but not limited to," and may be used interchangeably therewith. As used herein, the words "or" and "and" refer to the words "and/or" and are used interchangeably therewith unless the context clearly dictates otherwise. As used herein, the word "such as" refers to the phrase "such as, but not limited to," and may be used interchangeably therewith.

It should also be noted that in the device of the present application, each component can be disassembled and/or reassembled. These decompositions and/or recombinations shall be considered equivalent versions of this application.

The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, this application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for the purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the form disclosed herein. Although various example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. within.

Claims (10)

1. A cleaning device for cleaning a liquid filling nozzle in battery production, comprising:

the brushing assembly is detachably connected with the liquid injection nozzle and can brush the liquid injection nozzle through contact;

the driving piece is connected with the brushing assembly and used for driving the brushing assembly to brush the liquid injection nozzle;

and the blowing assembly is matched with the brushing assembly to jointly clean the liquid injection nozzle so as to clean the liquid injection nozzle.

2. The cleaning apparatus defined in claim 1, wherein the brushing assembly comprises:

a transmission shaft;

the brushing part is arranged on the transmission shaft and can be contacted with the liquid injection nozzle;

the driving piece drives the transmission shaft to move so as to drive the brushing piece to move relative to the liquid injection nozzle, so that the liquid injection nozzle is brushed.

3. The cleaning device of claim 2, wherein the drive shaft rotates about its own axis to rotate the brushing element, causing the brushing element to brush the nozzle.

4. A cleaning device according to claim 3 wherein the axis of the drive shaft is perpendicular or parallel to the axis of the nozzle.

5. The cleaning device according to claim 2, wherein the transmission shaft moves reciprocally to drive the brushing member to brush the liquid filling nozzle.

6. The cleaning device according to claim 2, wherein the brushing assembly further comprises a containing cavity for containing cleaning liquid, a plurality of mounting ports detachably abutting against the liquid filling nozzle are formed in the containing cavity, the transmission shaft and the brushing member are arranged in the containing cavity, and when the transmission shaft drives the brushing member to move, the brushing member can carry the cleaning liquid in the containing cavity to brush the liquid filling nozzle.

7. The cleaning apparatus as claimed in claim 6, comprising:

the liquid inlet valve is arranged at the first end of the accommodating cavity in the length direction;

the liquid draining valve is arranged at the second end of the accommodating cavity in the length direction.

8. The cleaning device of claim 6, further comprising:

a frame body;

the hydrops dish set up in on the support body, the hydrops dish is used for collecting the liquid that holds the chamber and flow out.

9. The cleaning device of claim 6, wherein the sidewall of the mounting port is a stepped sidewall that mates with a sealing rim on the nozzle, the sealing rim being configured to prevent cleaning fluid in the receiving chamber from flowing out of the mounting port.

10. A liquid injector comprising a cleaning apparatus according to any one of claims 1 to 9.