CN116511143A

CN116511143A - Annotate liquid machine and annotate liquid mouth cleaning system thereof

Info

Publication number: CN116511143A
Application number: CN202310524895.8A
Authority: CN
Inventors: 游健; 张留鑫; 李核志
Original assignee: Sany Technology Equipment Co Ltd
Current assignee: Sany Technology Equipment Co Ltd
Priority date: 2023-02-09
Filing date: 2023-05-10
Publication date: 2023-08-01

Abstract

The invention provides a liquid injection machine and a liquid injection nozzle cleaning system thereof, wherein the liquid injection nozzle cleaning system of the liquid injection machine comprises: the cleaning structure comprises a box body and an interface arranged on the box body, the interface is suitable for being connected with the liquid injection nozzle, and the interface is provided with a liquid inlet; the recovery mechanism comprises a tank body, the box body is connected with the tank body through a first pipeline, and the tank body is connected with the liquid inlet through a first liquid outlet pipe. When the liquid injection nozzle needs to be cleaned, the liquid injection nozzle is connected with the interface. The cleaning liquid enters the interface from the liquid inlet, so as to clean the liquid injection nozzle. After cleaning, the residual liquid of the cleaning liquid enters the box body and then enters the tank body through the first pipeline. The cleaning liquid in the tank body can enter the liquid inlet through the first liquid outlet pipe, so that the cyclic utilization of the cleaning liquid is realized, and the process cost is reduced.

Description

Annotate liquid machine and annotate liquid mouth cleaning system thereof

Technical Field

The invention relates to the technical field of battery production equipment, in particular to a liquid injection machine and a liquid injection nozzle cleaning system thereof.

Background

After the liquid filling machine fills liquid into the battery, the liquid filling nozzle needs to be cleaned. The cleaning process is that the liquid injection nozzle is washed by a cleaning liquid (DEC diethyl carbonate), and the electrolyte solid residue remained on the liquid injection nozzle is dissolved. The dissolved cleaning solution is discharged into a residual solution tank through a residual solution box for storage, and is discharged when the cleaning solution in the residual solution tank reaches a certain amount. In the structure, the cleaning liquid is directly discharged once, and is not recycled, so that the waste of the cleaning liquid is caused, and the overall cost of the production process is higher.

Disclosure of Invention

Therefore, the invention aims to overcome the defects of waste of cleaning liquid and higher cost caused by no recycling of the cleaning liquid of the liquid injection machine in the prior art, thereby providing the liquid injection machine and the liquid injection nozzle cleaning system thereof.

In order to solve the above problems, the present invention provides a nozzle cleaning system of a liquid filling machine, comprising: the cleaning structure comprises a box body and an interface arranged on the box body, the interface is suitable for being connected with the liquid injection nozzle, and the interface is provided with a liquid inlet; the recovery mechanism comprises a tank body, the box body is connected with the tank body through a first pipeline, and the tank body is connected with the liquid inlet through a first liquid outlet pipe.

Optionally, a filter structure is disposed on the first pipeline.

Optionally, the liquid filling nozzle cleaning system further comprises a liquid storage tank, wherein the liquid storage tank is suitable for storing cleaning liquid; the liquid storage tank is connected with the tank body through a second pipeline.

Optionally, the liquid storage tank is connected with the liquid inlet through a second liquid outlet pipe.

Optionally, the second pipeline is provided with a first flow detection structure.

Optionally, a liquid level detection structure is arranged on the liquid storage tank and the tank body.

Optionally, a drain outlet is arranged at the bottom of the tank body.

Optionally, the liquid injection nozzle cleaning system further comprises a sweeping and blowing mechanism, and an air outlet of the sweeping and blowing mechanism is connected with the liquid inlet.

Optionally, one or more of the following interfaces are arranged on the tank body and the liquid storage tank: negative pressure interface, positive pressure interface, normal pressure interface and exhaust interface.

Optionally, the tank body includes residual liquid jar and dilution jar, and the box body is connected with the residual liquid jar through first pipeline, and the liquid storage jar is connected with the dilution jar through the second pipeline, and the residual liquid jar is connected with the dilution jar through the third pipeline, and the dilution jar is connected with the inlet through the second drain pipe.

Optionally, a second flow detection structure is provided on the third pipeline.

The invention also provides a liquid injection machine, which comprises the liquid injection nozzle cleaning system.

The invention has the following advantages:

by utilizing the technical scheme of the invention, when the liquid injection nozzle is required to be cleaned, the liquid injection nozzle is connected with the interface. The cleaning liquid enters the interface from the liquid inlet, so as to clean the liquid injection nozzle. After cleaning, the residual liquid of the cleaning liquid enters the box body and then enters the tank body through the first pipeline. The cleaning liquid in the tank body can enter the liquid inlet through the first liquid outlet pipe, so that the cyclic utilization of the cleaning liquid is realized, and the process cost is reduced. Therefore, the technical scheme of the invention solves the defects of waste of the cleaning liquid and higher cost caused by no recycling of the cleaning liquid of the liquid injection machine in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the structure of a first embodiment of a nozzle cleaning system of the present invention;

FIG. 2 shows an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic diagram showing a structure of a second embodiment of the nozzle cleaning system of the present invention;

fig. 4 shows a schematic structural view of a third embodiment of the nozzle cleaning system of the present invention.

Reference numerals illustrate:

1. a liquid injection nozzle; 10. cleaning the structure; 11. a case body; 12. an interface; 13. a liquid inlet; 20. a liquid storage tank; 30. a recovery mechanism; 31. a tank body; 311. a residue tank; 312. a dilution tank; 32. a liquid level detection structure; 33. a liquid outlet; 34. a negative pressure interface; 35. a positive pressure interface; 36. a normal pressure interface; 37. an exhaust interface; 40. a first pipeline; 50. a second pipeline; 60. a first liquid outlet pipe; 70. a second liquid outlet pipe; 80. a filtering structure; 90. a first flow rate detection structure; 100. a sweeping and blowing mechanism; 110. a third pipeline; 120. a second flow detection structure.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

Embodiment one:

as shown in fig. 1 and 2, the nozzle cleaning system of the liquid filling machine according to the first embodiment includes a cleaning structure 10 and a recovery mechanism 30. The cleaning structure 10 includes a box 11 and an interface 12 disposed on the box 11, the interface 12 is adapted to be connected with the liquid filling nozzle 1, and a liquid inlet 13 is disposed on the interface 12. The recovery mechanism 30 includes a tank 31. The box 11 is connected with the tank 31 through a first pipeline 40, and the tank 31 is connected with the liquid inlet 13 through a first liquid outlet pipe 60.

By using the technical scheme of the embodiment, when the liquid injection nozzle needs to be cleaned, the liquid injection nozzle 1 is connected with the interface 12. The cleaning liquid enters the interface 12 from the liquid inlet 13, so as to clean the liquid injection nozzle 1. After cleaning, the residual cleaning liquid enters the box 11 and then enters the tank 31 through the first pipeline 40. The cleaning liquid in the tank body 31 can enter the liquid inlet 13 through the first liquid outlet pipe 60, so that the structure realizes the recycling of the cleaning liquid and reduces the process cost. Therefore, the technical scheme of the embodiment solves the defects of waste of the cleaning liquid and higher cost caused by the fact that the cleaning liquid of the liquid injection machine in the prior art is not recycled.

In cleaning the pouring nozzle 1, the pouring apparatus needs to be moved from the pouring station to above the cleaning structure 10. The mouthpiece 12 is provided on the upper surface of the case 11, and the mouthpiece 12 is open at its upper end and communicates with the space inside the case 11 at its lower end. As can be seen in connection with fig. 2, the pouring spout 1 is inserted into the mouthpiece from above. The liquid inlet 13 is arranged on the side wall of the interface 12 and is communicated with the space in the interface 12. Therefore, the cleaning liquid washes the liquid filling nozzle 1 from the liquid inlet 13, and the residual liquid of the cleaning liquid falls into the box body 11 below by gravity and is temporarily stored.

The cleaning liquid in this embodiment is DEC (diethyl carbonate), although other organic solvents may be used.

As can be seen in connection with fig. 2, the first pipe 40 is provided with an electromagnetic drain valve which is opened when the amount of cleaning liquid in the tank 11 reaches a certain amount, and the cleaning liquid can flow from the first pipe 40 into the tank 31.

As can be seen in connection with fig. 1, a manual drain valve and an electromagnetic drain valve are provided on the first drain pipe 60. Wherein the manual drain valve acts as a manual switch for the first drain 60, being normally closed when the device is not in use. The electromagnetic liquid outlet valve controls whether the cleaning liquid in the tank body 31 flows into the liquid inlet 13, specifically:

when the cleaning liquid in the tank body 31 is not needed to rinse the liquid injection nozzle 1, the electromagnetic liquid outlet valve is closed;

when the concentration of the cleaning liquid in the tank 31 is not in accordance with the requirement, the electromagnetic liquid outlet valve is closed;

when the cleaning liquid in the tank body 31 is required to be used for flushing the liquid filling nozzle 1, and the concentration of the cleaning liquid in the tank body 31 meets the requirement, the electromagnetic liquid outlet valve is opened.

As shown in fig. 1, the first conduit 40 is provided with a filter structure 80. Specifically, the filtering structure 80 can filter the cleaning solution residual liquid after cleaning, and the cleaning solution after filtering enters the tank 31.

Further, the filter structure 80 includes a magnetic rod filter and a two-stage filter including a 1 μm filter and a 0.5 μm filter. The filtering structure can filter out iron powder, undissolved crystals and impurities in the cleaning liquid residual liquid.

Further, as can be seen from fig. 2, in this embodiment, a differential pressure transmitter is disposed upstream and downstream of the two-stage filter to monitor whether the two-stage filter is clogged, and if the two-stage clogging is detected, an alarm is notified to manually clean the filter element.

As shown in fig. 2, in the technical solution of this embodiment, the nozzle cleaning system further includes a sweeping and blowing mechanism 100, and an air outlet of the sweeping and blowing mechanism 100 is connected to the liquid inlet 13. Specifically, the sweeping and blowing mechanism 100 may provide a sweeping and blowing air, which can be blown into the liquid inlet 13, and blow the cleaning liquid in the first liquid outlet pipe 60 into the interface 12, and clean the liquid injection nozzle 1.

Further, the air outlet of the sweeping and blowing mechanism 100 is connected with the liquid inlet 13 through a pipeline, and an electromagnetic valve is arranged on the pipeline and controls whether sweeping and blowing air is introduced into the liquid inlet 13. Example two

As shown in fig. 3, the second embodiment of the nozzle cleaning system according to the present application is different from the first embodiment in that it further includes a liquid storage tank 20, the liquid storage tank 20 is adapted to store cleaning liquid, and the liquid storage tank 20 is connected to the tank body 31 through a second pipe 50.

Specifically, when the residual cleaning liquid in the tank 31 is recycled for a period of time, the residual cleaning liquid concentration is increased and the tank cannot be used. At this time, the pre-stored cleaning solution in the liquid storage tank 20 enters the tank body 31 through the second pipeline 50, so as to dilute the used cleaning solution, and the diluted cleaning solution meeting the concentration requirement enters the liquid inlet 13 through the first liquid outlet pipe 60 and cleans the liquid injection nozzle 1.

In this embodiment, the liquid storage tank 20 is used for storing the cleaning liquid, and the cleaning liquid in the liquid storage tank 20 is filled through the outside (i.e., clean cleaning liquid is stored). As can be seen in connection with fig. 3, the tank 31 of the recovery mechanism 30 is connected to the cartridge 11 and the reservoir 20 via a first line 40 and a second line 50, respectively. That is, the cleaning liquid cleaned in the cartridge 11 can enter the tank 31 through the first pipe 40, and the cleaning liquid pre-stored in the liquid storage tank 20 can enter the tank 31 through the second pipe 50. The cleaned cleaning solution is diluted in the tank 31, and when the cleaning solution is diluted to meet the concentration requirement, the cleaning solution can enter the liquid inlet 13 through the first liquid outlet pipe 60, and the liquid injection nozzle 1 is cleaned.

As can be seen from this, in the present embodiment, the cleaning liquid is recovered and reused by the recovery mechanism 30 after cleaning the pouring nozzle 1. After being circulated for a period of time, the high concentration cleaning liquid is diluted by the clean cleaning liquid in the liquid storage tank 20, thereby achieving maximized recycling, saving raw materials and reducing process costs.

Further, the concentration of the cleaning liquid in the tank 31 may be measured. If the concentration is within 10%, the use may be continued without dilution. If the concentration is between 10% and 20%, the cleaning solution in the liquid storage tank 20 is introduced into the tank body 31 through the second pipeline 50, and the cleaning solution is diluted until the concentration is reduced to 10%. If the concentration is more than 20%, the cleaning liquid in the tank 31 is discharged as a waste liquid and is not used.

The concentration of the cleaning liquid can be measured by manual sampling or by a sensor.

As can be seen in fig. 3, the second pipeline 50 is provided with an electromagnetic liquid outlet valve, and when the cleaning liquid in the tank 31 needs to be diluted, the electromagnetic liquid outlet valve is opened, and clean cleaning liquid in the liquid storage tank 20 enters the tank 31 through the second pipeline 50, so that the cleaning liquid is diluted. When the cleaning liquid in the tank 31 is not required to be diluted, the electromagnetic liquid outlet valve is closed.

As shown in fig. 3, in the technical solution of the present embodiment, the liquid storage tank 20 is connected to the liquid inlet 13 through the second liquid outlet pipe 70. The cleaning liquid in the liquid storage tank 20 can enter the liquid inlet 13 through the second liquid outlet pipe 70 and clean the liquid filling nozzle 1.

That is, the clean cleaning solution in the liquid storage tank 20 can enter the tank body 31 through the second pipeline 50 to dilute the cleaning solution, and can also clean the liquid filling nozzle 1 through the second liquid outlet pipe 70.

When the cleaning liquid of the tank body 31 is diluted, the liquid filling nozzle 1 can be cleaned by the cleaning liquid in the liquid storage tank 20, so that the cleaning work of the liquid filling nozzle 1 is not affected.

As can be seen from fig. 3, the second liquid outlet pipe 70 is provided with an electromagnetic liquid outlet valve, and the electromagnetic liquid outlet valve controls whether the cleaning liquid flows into the second liquid outlet pipe 70. When the cleaning solution in the liquid storage tank 20 is needed to clean the liquid injection nozzle 1, the electromagnetic liquid outlet valve is opened, and when the cleaning solution in the liquid storage tank 20 is not needed to clean the liquid injection nozzle 1, the electromagnetic liquid outlet valve is closed.

As shown in fig. 3, in the technical solution of this embodiment, the liquid level detecting structure 32 is disposed on the liquid storage tank 20 and the tank body 31. And the second conduit 50 is provided with a first flow sensing arrangement 90. Specifically, the liquid level detecting structure 32 can detect the liquid level of the cleaning liquid in the liquid storage tank 20 and the tank body 31, thereby obtaining the volume of the cleaning liquid. The concentration and the liquid level of the cleaning liquid in the tank 31 can calculate the volume of the cleaning liquid in the liquid storage tank 20 when the cleaning liquid needs to be diluted to a certain concentration. When the liquid level detection structure 32 detects that the liquid level of the liquid storage tank 20 drops to a preset value in the process of conveying the cleaning liquid from the liquid storage tank 20 to the tank body 31, the electric control liquid outlet valve on the second pipeline 50 is closed.

In addition, the liquid level detecting structure 32 can also detect whether the cleaning liquid in the liquid storage tank 20 or the tank 31 is at a lower liquid level. When the level of the cleaning liquid in the tank 31 is low, the cleaning liquid in the liquid storage tank 20 is required to clean the liquid filling nozzle 1. When the level of the cleaning liquid in the liquid storage tank 20 is low, it is necessary to add the cleaning liquid into the liquid storage tank 20.

As shown in fig. 3, in the technical solution of the present embodiment, a drain port 33 is provided at the bottom of the tank 31. The drain port 33 is provided with a drain valve, and when the concentration of the cleaning liquid in the tank is greater than 20%, the drain valve is opened, and the cleaning liquid is discharged as a waste liquid, as described above.

In the technical solution of the present embodiment, the sweeping and blowing air provided by the sweeping and blowing mechanism 100 blows the cleaning solution in the second liquid outlet pipe 70 into the interface 12, and cleans the liquid injection nozzle 1.

As shown in fig. 1 and 3, in the technical solution of the present embodiment, one or more of the following interfaces are provided on the liquid storage tank 20 and the tank body 31:

a negative pressure port 34, a positive pressure port 35, a normal pressure port 36, and a vent port 37.

Specifically, the top of the tank 31 is provided with a negative pressure port 34, a positive pressure port 35, a normal pressure port 36, and an exhaust port 37. The negative pressure interface 34 is connected with external negative pressure equipment, so that the pressure in the tank body 31 can be reduced; the positive pressure interface 35 is connected with external pressurizing equipment, so that the pressure in the tank body 31 can be increased; the normal pressure interface 36 is communicated with the atmospheric pressure and used for balancing the pressure in the tank body 31; the exhaust port 37 communicates with the outside of the factory for exhausting the gas in the tank 31.

The top of the liquid storage tank 20 is provided with a positive pressure port 35 and a normal pressure port 36. Wherein, the positive pressure interface 35 is connected with external pressurizing equipment, so that the pressure in the liquid storage tank 20 can be increased; the atmospheric pressure port 36 communicates with atmospheric pressure for equalizing the pressure within the reservoir 20.

Further, electromagnetic valves are arranged at all the interfaces, so that whether all the interfaces are opened or not is controlled.

When the tank 31 needs to suck the residual cleaning solution from the box 11, the negative pressure port 34 of the tank 31 is opened, and the pressure in the tank 31 is reduced, so that the residual cleaning solution in the box 11 is sucked into the tank 31 through the first pipeline 40. When the cleaning solution in the tank 31 needs to be used for cleaning the filling nozzle 1, the positive pressure port 35 of the tank 31 is opened, the pressure in the tank 31 is increased, and then the cleaning solution in the tank 31 is pressed to the position of the liquid inlet 13 through the first liquid outlet pipe 60.

When it is necessary to dilute the cleaning solution in the tank 20 by transferring the cleaning solution into the tank 31, the positive pressure port 35 of the tank 20 is opened, so that the cleaning solution in the tank 20 is pressed into the tank 31 through the second pipeline 50. When the cleaning solution in the liquid storage tank 20 is needed to clean the liquid filling nozzle 1, the positive pressure interface 35 of the liquid storage tank 20 is opened, the pressure in the liquid storage tank 20 is increased, and then the cleaning solution in the liquid storage tank 20 is pressed to the liquid inlet 13 through the second liquid outlet pipe 70.

Example III

As shown in fig. 4, the nozzle cleaning system of the third embodiment is different from the above-described embodiment in that the tank 31 includes a residual liquid tank 311 and a dilution tank 312. Specifically, the cartridge 11 is connected to the residual liquid tank 311 via the first line 40, the liquid tank 20 is connected to the dilution tank 312 via the second line 50, the residual liquid tank 311 is connected to the dilution tank 312 via the third line 110, and the dilution tank 312 is connected to the liquid inlet 13 via the second liquid outlet pipe 70.

In the third embodiment, the cleaning solution residual liquid in the box 11 flows into the residual liquid tank 311 through the first pipeline 40. The cleaning solution residual liquid in the residual liquid tank 311 and the clean cleaning solution in the liquid storage tank 20 are mixed and diluted in the dilution tank 312. Compared with the second embodiment, the nozzle cleaning system in the third embodiment can quantitatively convey the cleaning liquid in the residual liquid tank 311 into the dilution tank 312, so that the ratio adjustment is more flexible.

Preferably, the third pipeline 110 is provided with a second flow detecting structure 120. The second detection structure can detect the flow rate of the cleaning liquid residual liquid transferred from the residual liquid tank 311 to the liquid storage tank 20.

As can be seen in connection with fig. 4, both the raffinate tank 311 and the dilution tank 312 are provided with a liquid level detection structure 32, the bottoms of both being provided with a drain 33. The top of the residual liquid tank 311 is provided with a negative pressure port 34, a positive pressure port 35, a normal pressure port 36 and an exhaust port 37, and the top of the dilution tank 312 is provided with a positive pressure port 35 and a normal pressure port 36.

When the residual liquid tank 311 needs to suck the residual liquid of the cleaning liquid from the box 11, the negative pressure port 34 of the residual liquid tank 311 is opened, and the pressure in the tank 31 is reduced, so that the residual liquid of the cleaning liquid in the box 11 is sucked into the residual liquid tank through the first pipeline 40.

When the residual cleaning liquid in the dilution tank 312 is required to be diluted, the positive pressure port 35 of the residual cleaning liquid tank 311 is opened, and the positive pressure port 35 of the liquid storage tank 20 is opened. The cleaning solution residual liquid in the residual liquid tank 311 is pressed into the dilution tank 312 through the third pipeline 110, and the clean cleaning solution in the liquid storage tank 20 is pressed into the dilution tank 312 through the second pipeline 50. The cleaning solution raffinate and clean cleaning solution are mixed in dilution tank 312.

When the cleaning solution in the dilution tank 312 is needed to clean the filling nozzle 1, the positive pressure port 35 of the dilution tank 312 is opened, the pressure in the dilution tank 312 is increased, and the cleaning solution in the dilution tank 312 is further pressed to the liquid inlet 13 through the first liquid outlet pipe 60.

When the cleaning solution in the liquid storage tank 20 is needed to clean the liquid filling nozzle 1, the positive pressure port 35 of the liquid storage tank 20 is opened, the internal pressure is increased, and then the cleaning solution in the liquid storage tank 20 is pressed to the liquid inlet 13 through the second liquid outlet pipe 70.

The application also provides a annotate liquid machine, and the embodiment of annotating liquid machine according to this application includes foretell notes liquid mouth cleaning system.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. Annotate liquid mouth cleaning system of liquid machine, characterized by, include:

the cleaning structure (10), the cleaning structure (10) comprises a box body (11) and an interface (12) arranged on the box body (11), the interface (12) is suitable for being connected with the liquid injection nozzle (1), and a liquid inlet (13) is arranged on the interface (12);

the recovery mechanism (30) comprises a tank body (31), the box body (11) is connected with the tank body (31) through a first pipeline (40), and the tank body (31) is connected with the liquid inlet (13) through a first liquid outlet pipe (60).

2. Nozzle cleaning system according to claim 1, characterized in that the first conduit (40) is provided with a filter structure (80).

3. The nozzle cleaning system according to claim 1 or 2, further comprising a liquid reservoir (20), the liquid reservoir (20) being adapted to store cleaning liquid; the liquid storage tank (20) is connected with the tank body (31) through a second pipeline (50).

4. A nozzle cleaning system according to claim 3, characterized in that the reservoir (20) is connected to the inlet (13) via a second outlet pipe (70).

5. A nozzle cleaning system according to claim 3, characterized in that the second conduit (50) is provided with a first flow detecting structure (90).

6. A nozzle cleaning system according to claim 3, characterized in that the liquid storage tank (20) and the tank body (31) are provided with a liquid level detection structure (32).

7. The nozzle cleaning system according to claim 1, characterized in that a drain (33) is provided at the bottom of the tank (31).

8. The nozzle cleaning system according to claim 1, further comprising a sweeping and blowing mechanism (100), wherein an air outlet of the sweeping and blowing mechanism (100) is connected with the liquid inlet (13).

9. A nozzle cleaning system according to claim 3, characterized in that one or more of the following interfaces are provided on the tank (31) and the reservoir (20):

a negative pressure interface (34), a positive pressure interface (35), a normal pressure interface (36) and an exhaust interface (37).

10. The nozzle cleaning system according to claim 4, wherein the tank body (31) comprises a residual liquid tank (311) and a dilution tank (312), the box body (11) is connected with the residual liquid tank (311) through the first pipeline (40), the liquid storage tank (20) is connected with the dilution tank (312) through the second pipeline (50), the residual liquid tank (311) is connected with the dilution tank (312) through a third pipeline (110), and the dilution tank (312) is connected with the liquid inlet (13) through the second liquid outlet pipe (70).

11. The nozzle cleaning system of claim 10, wherein the third conduit (110) is provided with a second flow detection structure (120).

12. A filling machine comprising a filling nozzle cleaning system according to any one of claims 1 to 11.