Pneumatic pipeline cleaning device and method

Abstract

The invention provides a pneumatic pipeline cleaning device and method.The system comprises a liquid storage tank, a liquid receiving disc, a liquid beating loop, a recycling loop and an air returning loop, when a formation equipment pipeline is cleaned, the cleaning device enables cleaning liquid in the liquid storage tank to flow into the liquid receiving disc through the formation equipment pipeline through the liquid beating loop; and then the cleaning liquid in the liquid receiving tray flows into the liquid storage tank again through the formation equipment pipeline by the recovery loop, and the cleaning operation is repeated until the pipeline is thoroughly cleaned, so that residues in the lithium battery formation equipment pipeline can be efficiently and thoroughly cleaned, normal operation of the equipment is ensured, and the working efficiency is improved. And the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of production equipment, and in particular to a pneumatic pipeline cleaning device and method. Background Art

[0002] With the continuous expansion of the lithium battery industry, the demand for lithium battery production equipment has also increased exponentially, and the various working conditions faced by the equipment have become increasingly complex. Among them, formation, as an indispensable process in the lithium battery production process, also has problems such as small space, which also increases the difficulty of cleaning the formation equipment pipeline. How to clean the formation equipment pipeline quickly, simply, safely and conveniently has become an unavoidable problem for major lithium battery manufacturers. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a pneumatic pipeline cleaning device and method to achieve rapid and convenient cleaning of the pipeline of the chemical formation equipment.

[0004] In a first aspect, an embodiment of the present invention provides a pneumatic pipeline cleaning device, which is used to clean pipelines of a lithium battery formation equipment, comprising:

[0005] A liquid storage tank, used for storing cleaning liquid;

[0006] A liquid receiving tray, used to buffer the cleaning liquid;

[0007] A liquid pumping circuit, one end of which is connected to the liquid storage tank, and the other end is connected to the water inlet of the formation equipment pipeline, and the water outlet of the formation equipment pipeline is connected to the liquid receiving tray;

[0008] A recovery loop, one end of which is connected to the liquid storage tank, and the other end is connected to the water inlet of the formation equipment pipeline;

[0009] An air return circuit, one end of which is connected to the liquid storage tank and the other end is connected to the atmosphere;

[0010] The control device is connected with the liquid pumping circuit, the recovery circuit and the air return circuit respectively. The control device is used to: when cleaning the formation equipment pipeline, perform iterative cleaning operation until the formation equipment pipeline is cleaned; control the air return circuit to make the pressure value in the liquid storage tank equal to the atmospheric pressure value; the cleaning operation includes: controlling the liquid pumping circuit to make the cleaning liquid in the liquid storage tank flow into the liquid receiving tray through the formation equipment pipeline; controlling the recovery circuit to make the cleaning liquid in the liquid receiving tray flow into the liquid storage tank through the formation equipment pipeline.

[0011] In an optional embodiment, the liquid pumping circuit includes: a first air-controlled valve, a fourth air-controlled valve and a positive pressure air source, one end of the liquid storage tank is connected to the positive pressure air source through the first air-controlled valve, and the other end is connected to the formation equipment pipeline through the fourth air-controlled valve, and the control device is respectively connected to the first air-controlled valve and the fourth air-controlled valve, and the control device is also used for:

[0012] The first gas-controlled valve and the fourth gas-controlled valve are controlled to operate so that the cleaning liquid in the liquid storage tank flows into the liquid receiving tray through the formation equipment pipeline.

[0013] In an optional embodiment, the liquid pumping circuit further includes a first manual valve, one end of which is connected to the first air-controlled valve and the fourth air-controlled valve respectively, and the other end of which is connected to the positive pressure air source.

[0014] In an optional embodiment, the first air-controlled valve and the fourth air-controlled valve are both two-position two-way valves.

[0015] In an optional embodiment, the recovery circuit includes: a second air-controlled valve, a third air-controlled valve and a negative pressure air source, one end of the liquid storage tank is connected to the negative pressure air source through the second air-controlled valve; the other end is connected to the formation equipment pipeline through the third air-controlled valve, the control device is connected to the second air-controlled valve and the third air-controlled valve respectively, and the control device is also used for:

[0016] The second gas-controlled valve and the third gas-controlled valve are controlled to operate so that the cleaning liquid in the liquid receiving tray flows into the liquid storage tank through the formation equipment pipeline.

[0017] In an optional embodiment, the recovery circuit also includes a first manual valve and a third manual valve, one end of the first manual valve is connected to the positive pressure air source, and the other end is connected to the second air-controlled valve, one end of the third manual valve is connected to the positive pressure air source, and the other end is connected to the third air-controlled valve.

[0018] In an optional embodiment, the air return circuit includes a second manual valve, and the liquid storage tank is connected to the atmosphere through the second manual valve.

[0019] In an optional embodiment, the first manual valve is a three-position four-way valve.

[0020] In a second aspect, an embodiment of the present invention provides a pneumatic pipeline cleaning method, which is applicable to a control device in the above-mentioned pneumatic pipeline cleaning device, and the method includes:

[0021] When cleaning the formation equipment pipeline, an iterative cleaning operation is performed until the formation equipment pipeline is cleaned, wherein the cleaning operation includes: controlling the action of the liquid pumping circuit so that the cleaning liquid in the liquid storage tank flows into the liquid receiving tray through the formation equipment pipeline; controlling the action of the recovery circuit so that the cleaning liquid in the liquid receiving tray flows into the liquid storage tank through the formation equipment pipeline;

[0022] Control the action of the air return circuit to make the pressure value in the liquid storage tank equal to the atmospheric pressure value.

[0023] In an optional embodiment, the method further comprises:

[0024] Control the first gas-controlled valve and the fourth gas-controlled valve to make the cleaning liquid in the liquid storage tank flow into the liquid receiving tray through the formation equipment pipeline;

[0025] The second gas-controlled valve and the third gas-controlled valve are controlled to operate so that the cleaning liquid in the liquid receiving tray flows into the liquid storage tank through the formation equipment pipeline.

[0026] The embodiment of the present invention provides a pneumatic pipeline cleaning device and method. When cleaning the pipeline of the formation equipment, the cleaning device uses a liquid pumping circuit to flow the cleaning liquid in the liquid storage tank into the liquid receiving tray through the pipeline of the formation equipment, and then the recovery circuit flows the cleaning liquid in the liquid receiving tray into the liquid storage tank again through the pipeline of the formation equipment. The above cleaning operation is repeated until the pipeline is thoroughly cleaned, thereby being able to efficiently and thoroughly clean the residues in the pipeline of the lithium battery formation equipment, ensuring the normal operation of the equipment, and improving production efficiency and product quality.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram showing the structure of a pneumatic pipeline cleaning device provided by an embodiment of the present invention is shown;

[0030] Figure 2 The structure diagram of the liquid pumping circuit provided by the embodiment of the present invention is shown;

[0031] Figure 3 A schematic diagram of the structure of a recovery loop provided by an embodiment of the present invention is shown;

[0032] Figure 4 A schematic diagram of the structure of a control device provided by an embodiment of the present invention is shown.

[0033] Explanation of main component symbols: 100 - liquid receiving tray; 200 - formation equipment pipeline; 300 - liquid storage tank; 510 - first manual valve; 520 - second manual valve; 530 - third manual valve; 610 - first air-controlled valve; 620 - second air-controlled valve; 630 - third air-controlled valve; 640 - fourth air-controlled valve; 410 - negative pressure air source; 420 - positive pressure air source. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0035] In the current technology, since it is necessary to evacuate the inside of the lithium battery during the negative pressure formation process of the lithium battery, a small amount of electrolyte will inevitably be sucked into the pipeline during the vacuuming process. After a long period of accumulation, the electrolyte will crystallize in the pipeline, thereby affecting the normal use of the equipment. Based on this, an embodiment of the present invention provides a pneumatic pipeline cleaning device and method. When cleaning the pipeline of the formation equipment, the cleaning device flows the cleaning liquid in the liquid storage tank into the liquid receiving tray through the pipeline of the formation equipment through a liquid pumping circuit, and then the recovery circuit flows the cleaning liquid in the liquid receiving tray into the liquid storage tank again through the pipeline of the formation equipment. The above cleaning operation is repeatedly iterated until the pipeline is thoroughly cleaned, so that the residue in the pipeline of the lithium battery formation equipment can be efficiently and thoroughly cleaned, ensuring the normal operation of the equipment and improving production efficiency and product quality.

[0036] Figure 1 The present invention provides a schematic diagram of the structure of a pneumatic pipeline cleaning device, which is suitable for cleaning pipelines of lithium battery formation equipment. Figure 1 As shown, the device includes: a liquid storage tank 300, a liquid receiving tray 100, a liquid pumping circuit, a recovery circuit and an air return circuit, wherein the liquid storage tank 300 is used to store cleaning liquid; the liquid receiving tray 100 is used to buffer the cleaning liquid; the liquid pumping circuit is used to allow the cleaning liquid in the liquid storage tank 300 to flow into the liquid receiving tray 100 through equipment management; the recovery circuit is used to allow the cleaning liquid in the liquid receiving tray 100 to flow into the liquid storage tank 300 through equipment management; and the air return circuit is used to make the air pressure value in the liquid storage tank 300 equal to the atmospheric pressure value.

[0037] Among them, one end of the liquid-injection loop is connected to the liquid storage tank 300, and the other end is connected to the water inlet of the formation equipment pipeline 200, and the water outlet of the formation equipment pipeline 200 is connected to the liquid receiving tray 100; one end of the recovery loop is connected to the liquid storage tank 300, and the other end is connected to the water inlet of the formation equipment pipeline 200; one end of the air return loop is connected to the liquid storage tank 300, and the other end is connected to the atmosphere;

[0038] The control device is connected to the liquid pumping circuit, the recovery circuit and the air return circuit respectively. The control device is used to: when cleaning the formation equipment pipeline 200, perform an iterative cleaning operation until the formation equipment pipeline 200 is cleaned; control the air return circuit to make the pressure value in the liquid storage tank 300 equal to the atmospheric pressure value; the cleaning operation includes: controlling the liquid pumping circuit to make the cleaning liquid in the liquid storage tank 300 flow into the liquid receiving tray 100 through the formation equipment pipeline 200; controlling the recovery circuit to make the cleaning liquid in the liquid receiving tray 100 flow into the liquid storage tank 300 through the formation equipment pipeline 200.

[0039] When cleaning the pipeline of the formation equipment, the cleaning device of the embodiment of the present invention flows the cleaning liquid in the liquid storage tank into the liquid receiving tray through the pipeline of the formation equipment through the liquid pumping circuit, and then the recovery circuit flows the cleaning liquid in the liquid receiving tray into the liquid storage tank again through the pipeline of the formation equipment. The above cleaning operation is repeated until the pipeline is thoroughly cleaned, thereby being able to efficiently and thoroughly clean the residue in the pipeline of the lithium battery formation equipment, ensuring the normal operation of the equipment, and improving production efficiency and product quality.

[0040] Figure 2 A schematic diagram of the structure of a liquid pumping circuit provided in an embodiment of the present invention is shown in FIG. Figure 2 As shown, the liquid pumping circuit includes: a first air-controlled valve 610, a fourth air-controlled valve 640 and a positive pressure gas source 420. One end of the liquid storage tank 300 is connected to the positive pressure gas source 420 through the first air-controlled valve 610, and the other end is connected to the formation equipment pipeline 200 through the fourth air-controlled valve 640. The control device is connected to the first air-controlled valve 610 and the fourth air-controlled valve 640 respectively. The control device is also used for:

[0041] The first gas-controlled valve 610 and the fourth gas-controlled valve 640 are controlled to operate so that the cleaning liquid in the liquid storage tank 300 flows into the liquid receiving tray 100 through the formation equipment pipeline 200 .

[0042] In an optional embodiment, the liquid pumping circuit further includes a first manual valve 510 , one end of which is connected to the first air-controlled valve 610 and the fourth air-controlled valve 640 respectively, and the other end of which is connected to the positive pressure air source 420 .

[0043] In an optional embodiment, the first manual valve 510 is a three-position four-way valve.

[0044] Specifically, Figure 2 As shown, one end of the liquid storage tank 300 is connected to one end of the first air-controlled valve 610, the other end of the first air-controlled valve 610 is connected to one end of the first manual valve 510, and the other end of the first manual valve 510 is connected to the positive pressure gas source 420; the other end of the liquid storage tank 300 is connected to one end of the fourth air-controlled valve 640, the other end of the fourth air-controlled valve 640 is connected to the water inlet of the formation equipment pipeline 200, and the water outlet of the formation equipment pipeline 200 is connected to the liquid receiving tray 100.

[0045] When the formation equipment pipeline 200 needs to be cleaned, the first position of the first manual valve 510 is connected to the pipeline, so that the first manual valve 510 is connected to the positive pressure air source 420, and the first air-controlled valve 610 and the fourth air-controlled valve 640 are opened by compressed air. At this time, compressed air enters the liquid storage tank 300, and the cleaning liquid in the liquid storage tank 300 flows into the liquid receiving tray 100 through the formation equipment pipeline 200 by gas pressure. The liquid receiving tray 100 is now used to buffer the cleaning liquid used to clean the formation equipment pipeline 200.

[0046] Figure 3 A schematic diagram of the structure of a recovery loop provided by an embodiment of the present invention, such as Figure 3 As shown, the recovery circuit includes: a second air-controlled valve 620, a third air-controlled valve 630 and a negative pressure gas source 410, one end of the liquid storage tank 300 is connected to the negative pressure gas source 410 through the second air-controlled valve 620; the other end is connected to the formation equipment pipeline 200 through the third air-controlled valve 630, and the control device is respectively connected to the second air-controlled valve 620 and the third air-controlled valve 630, and the control device is also used for:

[0047] The second gas-controlled valve 620 and the third gas-controlled valve 630 are controlled to operate so that the cleaning liquid in the liquid receiving tray 100 flows into the liquid storage tank 300 through the formation equipment pipeline 200 .

[0048] In an optional embodiment, the recovery circuit also includes a first manual valve 510 and a third manual valve 530, one end of the first manual valve 510 is connected to the positive pressure gas source 420, and the other end is connected to the second air-controlled valve 620, one end of the third manual valve 530 is connected to the positive pressure gas source 420, and the other end is connected to the third air-controlled valve 630.

[0049] Specifically, Figure 3As shown, one end of the liquid receiving tray 100 is connected to the water outlet of the formation equipment pipeline 200, the water inlet of the formation equipment pipeline 200 is connected to one end of the third air-controlled valve 630, the other end of the third air-controlled valve 630 is connected to one end of the liquid storage tank 300, the other end of the liquid storage tank 300 is connected to one end of the second air-controlled valve 620, the other end of the second air-controlled valve 620 is connected to the negative pressure air source 410, wherein the second air-controlled valve 620 is connected to one end of the first manual valve 510, and the other end of the first manual valve 510 is connected to the positive pressure air source 420; the third air-controlled valve 630 is connected to the positive pressure air source 420 through the third manual valve 530.

[0050] After the liquid pumping circuit flows the cleaning liquid in the liquid storage tank 300 into the liquid receiving tray 100, the third position of the first manual valve 510 is connected to the pipeline, so that the first manual valve 510 is connected to the positive pressure air source 420, and the second air-controlled valve 620 is started by compressed air, so that the second air-controlled valve 620 is connected to the negative pressure air source 410. At this time, the air in the liquid storage tank 300 is extracted to form a vacuum state. After 30 seconds of extraction, the first position of the third manual valve 530 is connected to the pipeline, so that the third air-controlled valve 630 is connected to the positive pressure air source 420 through the third manual valve 530, and the third air-controlled valve 630 is started by compressed air, so that the second position of the third air-controlled valve 630 is connected to the pipeline. At this time, since the liquid storage tank 300 is already in a vacuum state, the cleaning liquid in the liquid receiving tray 100 will flow into the liquid storage tank 300 through the formation equipment pipeline 200 to complete the recovery of the cleaning liquid.

[0051] In the present application, when the equipment management is cleaned, the cleaning liquid in the liquid storage tank 300 is repeatedly passed through the chemical equipment pipeline 200 through the above-mentioned liquid injection circuit and recovery circuit, thereby completing the cleaning of the chemical equipment pipeline 200. Generally, the cleaning is repeated 3 to 5 times, and the chemical equipment pipeline 200 is completely cleaned.

[0052] Furthermore, after the formation equipment pipeline 200 is cleaned, since the liquid storage tank 300 is still in a vacuum state, it is necessary to balance the air pressure in the liquid storage tank 300 with the atmospheric pressure through an air return circuit.

[0053] like Figure 1 As shown, the first position of the second manual valve 520 is connected to the pipeline, so that the liquid storage tank 300 is connected to the atmosphere through the second manual valve 520, and the internal air pressure of the liquid storage tank 300 is balanced with the atmospheric pressure.

[0054] In an optional embodiment, the first air-controlled valve 610 , the second air-controlled valve 620 , the third air-controlled valve 630 , the fourth air-controlled valve 640 , the second manual-controlled valve 520 and the third manual-controlled valve 530 are all two-position two-way valves.

[0055] The present invention provides a pneumatic pipeline cleaning device, which squeezes the cleaning liquid in the liquid storage tank into the pipeline of the formation equipment by using positive pressure, and temporarily stores the cleaning liquid in the liquid receiving tray, and then uses negative pressure to suck the cleaning liquid in the liquid receiving tray back into the liquid storage tank, and repeats this process for multiple times, so as to achieve the effect of cleaning the pipeline of the formation equipment; and indirectly controls the channel of the air control valve by controlling the start and stop of compressed air, so as to squeeze the cleaning liquid into the pipeline of the formation equipment and recover it along the original route. The cleaning device has a simple structure, can efficiently and thoroughly clean the residue in the pipeline of the lithium battery formation equipment, while reducing the cost, thereby ensuring the normal operation of the equipment, and improving production efficiency and product quality.

[0056] In a second aspect, an embodiment of the present invention provides a pneumatic pipeline cleaning method, which is applicable to a control device in the above-mentioned pneumatic pipeline cleaning device, and the method includes:

[0057] S110, when cleaning the formation equipment pipeline, performing an iterative cleaning operation until the formation equipment pipeline is cleaned, wherein the cleaning operation includes: controlling the liquid pumping circuit to make the cleaning liquid in the liquid storage tank flow into the liquid receiving tray through the formation equipment pipeline; controlling the recovery circuit to make the cleaning liquid in the liquid receiving tray flow into the liquid storage tank through the formation equipment pipeline;

[0058] S120, controlling the operation of the air return circuit to make the pressure value in the liquid storage tank equal to the atmospheric pressure value.

[0059] In an optional embodiment, the method further includes:

[0060] Control the first gas-controlled valve and the fourth gas-controlled valve to make the cleaning liquid in the liquid storage tank flow into the liquid receiving tray through the formation equipment pipeline;

[0061] The second gas-controlled valve and the third gas-controlled valve are controlled to operate so that the cleaning liquid in the liquid receiving tray flows into the liquid storage tank through the formation equipment pipeline.

[0062] Specifically, when it is necessary to clean the formation equipment pipeline, the first manual valve is connected to the pipeline, so that the first manual valve is connected to the positive pressure air source, and the first pneumatic valve and the fourth air-controlled valve are opened by compressed air. At this time, the compressed air enters the liquid storage tank, and the cleaning liquid in the liquid storage tank flows into the liquid receiving tray through the formation equipment pipeline by gas pressure;

[0063] Then the third position of the first manual valve is connected to the pipeline, so that the first manual valve is connected to the positive pressure air source, and the second air-controlled valve is started by compressed air, so that the second air-controlled valve is connected to the negative pressure air source. At this time, the air in the liquid storage tank is pumped out to form a vacuum state;

[0064] Secondly, after 30 seconds of extraction, the first position of the third manual valve is connected to the pipeline, so that the third air-controlled valve is connected to the positive pressure air source through the third manual valve, and the third air-controlled valve is started by compressed air, so that the second position of the third air-controlled valve is connected to the pipeline. At this time, since the liquid storage tank is already in a vacuum state, the cleaning liquid in the liquid receiving tray will flow into the liquid storage tank through the formation equipment pipeline, completing the recovery of the cleaning liquid;

[0065] Finally, through the above steps, the cleaning liquid in the infusion tube is repeatedly passed through the pipeline of the formation equipment, thereby completing the cleaning of the pipeline of the formation equipment, and the cleaning is generally repeated 3 to 5 times.

[0066] The method provided in the embodiment of the present application has the same implementation principle and technical effects as those in the aforementioned device embodiment. For the sake of brief description, for matters not mentioned in the method embodiment, reference may be made to the corresponding contents in the aforementioned device embodiment.

[0067] like Figure 4 As shown, an electronic device 600 provided in an embodiment of the present application includes: a processor 601, a memory 602 and a bus, the memory 602 stores machine-readable instructions executable by the processor 601, when the electronic device is running, the processor 601 and the memory 602 communicate through the bus, and the processor 601 executes the machine-readable instructions to perform the steps of the pneumatic pipeline cleaning method as described above.

[0068] Specifically, the memory 602 and the processor 601 can be general-purpose memories and processors, which are not specifically limited here. When the processor 601 runs the computer program stored in the memory 602, the pneumatic pipeline cleaning method can be executed.

[0069] The processor 601 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 601. The above processor 601 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module may be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 602, and the processor 601 reads the information in the memory 602 and completes the steps of the above method in combination with its hardware.

[0070] Corresponding to the above-mentioned pneumatic pipeline cleaning method, an embodiment of the present application also provides a computer-readable storage medium, which stores machine-executable instructions. When the computer-executable instructions are called and executed by the processor, the computer-executable instructions prompt the processor to execute the steps of the above-mentioned pneumatic pipeline cleaning method.

[0071] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0072] For another example, the flowchart and block diagram in the accompanying drawings show the possible architecture, functions and operations of the device, method and computer program product according to multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and a part of the module, program segment or code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0073] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0074] In addition, each functional unit in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0075] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions for an electronic device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the vehicle marking method of each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, and other media that can store program codes.

[0076] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0077] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0078] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. They should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A pneumatic pipeline cleaning device, characterized in that: Used for cleaning pipelines of lithium battery formation equipment, including: A liquid storage tank, used for storing cleaning liquid; A liquid receiving tray, used for caching the cleaning liquid; A liquid pumping circuit, one end of which is connected to the liquid storage tank, and the other end of which is connected to the water inlet of the formation equipment pipeline, and the water outlet of the formation equipment pipeline is connected to the liquid receiving tray; A recovery loop, one end of which is connected to the liquid storage tank, and the other end of which is connected to the water inlet of the formation equipment pipeline; An air return circuit, one end of which is connected to the liquid storage tank and the other end of which is connected to the atmosphere; The control device is connected to the liquid pumping circuit, the recovery circuit and the air return circuit respectively, and is used to: when cleaning the formation equipment pipeline, perform an iterative cleaning operation until the formation equipment pipeline is cleaned; control the air return circuit to make the pressure value in the liquid storage tank equal to the atmospheric pressure value; the cleaning operation includes: controlling the liquid pumping circuit to make the cleaning liquid in the liquid storage tank flow into the liquid receiving tray through the formation equipment pipeline; controlling the recovery circuit to make the cleaning liquid in the liquid receiving tray flow into the liquid storage tank through the formation equipment pipeline.

2. The pneumatic pipeline cleaning device according to claim 1, characterized in that: The liquid pumping circuit includes: a first air-controlled valve, a fourth air-controlled valve and a positive pressure air source. One end of the liquid storage tank is connected to the positive pressure air source through the first air-controlled valve, and the other end is connected to the formation equipment pipeline through the fourth air-controlled valve. The control device is connected to the first air-controlled valve and the fourth air-controlled valve respectively, and the control device is also used for: The first gas-controlled valve and the fourth gas-controlled valve are controlled to operate so that the cleaning liquid in the liquid storage tank flows into the liquid receiving tray through the formation equipment pipeline.

3. The pneumatic pipeline cleaning device according to claim 2, characterized in that: The liquid pumping circuit further includes a first manual valve, one end of which is connected to the first air-controlled valve and the fourth air-controlled valve respectively, and the other end of which is connected to the positive-pressure air source.

4. The pneumatic pipeline cleaning device according to claim 3, characterized in that: The first air-controlled valve and the fourth air-controlled valve are both two-position two-way valves.

5. The pneumatic pipeline cleaning device according to claim 1, characterized in that: The recovery circuit includes: a second air-controlled valve, a third air-controlled valve and a negative pressure air source, one end of the liquid storage tank is connected to the negative pressure air source through the second air-controlled valve; the other end is connected to the formation equipment pipeline through the third air-controlled valve, the control device is connected to the second air-controlled valve and the third air-controlled valve respectively, and the control device is also used for: The second gas-controlled valve and the third gas-controlled valve are controlled to operate so that the cleaning liquid in the liquid receiving tray flows into the liquid storage tank through the formation equipment pipeline.

6. The pneumatic pipeline cleaning device according to claim 5, characterized in that: The recovery circuit also includes a first manual valve and a third manual valve, wherein one end of the first manual valve is connected to a positive pressure air source, and the other end is connected to the second air-controlled valve, and one end of the third manual valve is connected to the positive pressure air source, and the other end is connected to the third air-controlled valve.

7. The pneumatic pipeline cleaning device according to claim 1, characterized in that: The air return circuit includes a second manual valve, and the liquid storage tank is connected to the atmosphere through the second manual valve.

8. The pneumatic pipeline cleaning device according to claim 4 or 6, characterized in that: The first manual valve is a three-position four-way valve.

9. A pneumatic pipeline cleaning method, characterized in that: A control device applicable to a pneumatic pipeline cleaning device according to any one of claims 1 to 8, wherein the method comprises: When cleaning the formation equipment pipeline, an iterative cleaning operation is performed until the formation equipment pipeline is cleaned, wherein the cleaning operation includes: controlling the liquid pumping circuit to make the cleaning liquid in the liquid storage tank flow into the liquid receiving tray through the formation equipment pipeline; controlling the recovery circuit to make the cleaning liquid in the liquid receiving tray flow into the liquid storage tank through the formation equipment pipeline; The air return circuit is controlled to make the pressure value in the liquid storage tank equal to the atmospheric pressure value.

10. The pneumatic pipeline cleaning method according to claim 9, characterized in that: The method further comprises: Controlling the first air-controlled valve and the fourth air-controlled valve to operate so that the cleaning liquid in the liquid storage tank flows into the liquid receiving tray through the formation equipment pipeline; The second air-controlled valve and the third air-controlled valve are controlled to operate so that the cleaning liquid in the liquid receiving tray flows into the liquid storage tank through the formation equipment pipeline.

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