Battery liquid injection pump cleaning device and cleaning system

Abstract

The utility model discloses a cleaning device and a cleaning system for a battery liquid injection pump, and relates to the technical field of battery liquid injection. The pump core and the pump body are in composite motion, the liquid outlet and the liquid inlet are communicated with the pump core and a vacuum cavity of the pump body, the liquid outlet assembly is arranged on the side, where the pump core stretches out and draws back, of the pump body, and the liquid outlet assembly is used for providing cleaning liquid for the peripheral wall of the pump core; the scrubbing assembly is arranged on the same side, located on the liquid outlet assembly, of the pump body and used for scrubbing crystals on the peripheral wall of the pump core. The liquid outlet assembly provides cleaning liquid for the outer wall of the pump core, the cleaning liquid flushes and dissolves crystals on the periphery of the pump core, meanwhile, the scrubbing assembly scrubs a solid-liquid mixture along with movement of the pump core, accumulation of the crystals on the periphery of the pump core is reduced, the stability of the liquid injection pump in the operation process is improved, and meanwhile the electrolyte transferring precision is further improved. The production quality of the battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery liquid injection, in particular to a battery liquid injection pump cleaning device and a cleaning system. Background Art

[0002] Battery injection pumps are used to precisely inject electrolyte into batteries and are a key piece of equipment in the lithium-ion battery manufacturing process. The performance of these pumps directly impacts battery performance and safety. They must be able to precisely control the amount of electrolyte injected to ensure uniform distribution within the battery, thereby maintaining the battery's electrochemical performance and cycle life. In addition to filling lithium batteries, these pumps can also fill other types of batteries, such as nickel-metal hydride (NiMH), nickel-cadmium (NiCd), lead-acid batteries, fuel cells, and supercapacitors.

[0003] During the operation of the injection pump, the external motor starts to move, driving the pump core to move axially back and forth and rotate at the same time. When the pump core moves forward in the axial direction, a vacuum is formed between the pump core and the plug. At the same time, the groove at the end of the pump core is just on the lower side and connected to the lower liquid inlet. At this time, the electrolyte enters the vacuum space along the lower liquid inlet. At this time, the pump core continues to move axially backward and rotates at the same time. When the groove at the end of the pump core rotates to the upper side, the space inside the pump body is connected to the upper liquid outlet. At this time, the pump core continues to move backward, and the electrolyte in the vacuum space is squeezed out along the upper liquid outlet. This process is repeated. Figure 1 shown.

[0004] Research on the existing technology shows that although it can realize the liquid supply operation for the battery, there are still some shortcomings. During the circulation operation of the injection pump, it mainly relies on the close combination of the pump core and the pump body to form a negative pressure space to suck in and squeeze out the liquid. However, affected by the temperature and humidity of the workshop, the electrolyte in the injection pump will be damp and crystallized, and gaps and wear will appear between the pump core and the pump body, so that crystals will adhere to the gap between the pump core and the pump body. Long-term use will lead to crystal accumulation on the surface of the pump core, causing the injection pump to jam and overflow along the direction of the pump core, which not only affects the stability of the injection pump, but also causes the amount of liquid injected in the battery to be unstable, affecting the performance of battery production.

[0005] Therefore, the present application aims to improve the stability of the pump core of the liquid injection pump during operation, while also ensuring the accuracy of the liquid injection amount in the battery. Utility Model Content

[0006] The main purpose of the utility model is to provide a method for improving the stability of the pump core of the liquid injection pump during operation, while also ensuring the accuracy of the liquid injection amount in the battery.

[0007] In order to achieve the above-mentioned purpose, the utility model proposes a battery filling pump cleaning device, comprising a pump body, a pump core that moves in combination with the pump body, and a liquid outlet and a liquid inlet connecting the pump core and the vacuum cavity of the pump body, and further comprising:

[0008] a liquid outlet assembly, provided on the side of the pump body where the pump core is retracted, and used for providing cleaning liquid to the outer peripheral wall of the pump core; and

[0009] The brushing assembly is arranged on the same side of the pump body as the liquid outlet assembly and is used for wiping the crystals on the outer peripheral wall of the pump core.

[0010] In the above scheme, the pump core slides on the liquid outlet, that is, along the axial direction, and also rotates at the same time. During the movement, the vacuum cavity formed by the pump core in the pump body sucks the electrolyte at the liquid inlet. As the pump core squeezes the electrolyte sucked into the vacuum cavity, the electrolyte flows out from the liquid outlet. The liquid outlet component provides cleaning liquid to the periphery of the pump core. The cleaning liquid flows to the outer peripheral wall of the pump core and rinses and dissolves the crystals on the outer periphery of the pump core to reduce the crystallization on the outer periphery of the pump core. At the same time, the brushing component wipes the solid-liquid mixture on the outer peripheral wall of the pump core to reduce the accumulation of crystals on the outer periphery of the pump core.

[0011] Furthermore, the liquid outlet assembly includes a first bracket and a cleaning liquid outlet mounted on the first bracket. The first bracket can be mounted on the pump body or fixed to the pump body via an intermediate block. The liquid outlet assembly can be directed toward the outer wall of the pump core using an external nozzle, the position of which can be adjusted at will. Cleaning liquid can also be poured into the outer wall of the pump core during the complex movement of the pump core.

[0012] Furthermore, the brushing assembly includes a wiper attached to the outer periphery of the pump core, wherein the wiper wipes the crystals on the outer wall of the pump core to remove the crystals on the outer wall of the pump core, and at the same time, combined with the flushing and dissolving of the cleaning liquid, can effectively prevent the crystals from adhering to the outer wall of the pump core.

[0013] Furthermore, the plurality of wipers are circumferentially distributed about the axis of the pump core. The number of wipers can be set to a single one, as the pump core and the pump body perform a combined motion and come into contact with the wiper during the pump core's motion. Alternatively, the number of wipers can be set to multiple, with the plurality of wipers circumferentially distributed about the axis of the pump core, thereby increasing the wiping area of ​​the outer periphery of the pump core.

[0014] Furthermore, a second bracket is fixed to the outer wall of the wiper, and the second bracket is provided with a waste liquid outlet on the same side as the liquid inlet. The cleaning liquid outlet is located directly above the pump core and provides cleaning liquid to the outer peripheral wall of the pump core. The cleaning liquid flows to the pump core under gravity and flows to the waste liquid outlet after rinsing and dissolving crystals. The waste liquid outlet discharges the cleaning liquid that has dissolved the crystals.

[0015] Furthermore, the wiping piece and the cleaning liquid outlet are symmetrically distributed on both sides of the pump core.

[0016] Furthermore, a plug is fixed to the side of the pump body facing the liquid outlet assembly, and the vacuum cavity is formed between the pump core, the pump body, and the plug. The plug is used to block one side of the vacuum cavity, and is preferably screwed in. The distance the plug extends into the pump body can be adjusted to adjust the size of the vacuum cavity accordingly.

[0017] Furthermore, a shell is fixed to the outer wall of the pump body, a fixed cover is fixed to the side of the shell facing the expansion and contraction of the pump core, and the liquid outlet assembly and the brushing assembly are both installed on the fixed cover.

[0018] The present application also discloses a cleaning system, which uses the above-mentioned battery filling pump cleaning device, comprising:

[0019] a crystallization sensing module, provided on a side of the pump body where the pump core is retracted, and configured to detect crystallization on an outer wall of the pump core;

[0020] A liquid storage tank with cleaning liquid, wherein the liquid storage tank and the liquid outlet assembly are connected via a pipeline;

[0021] a liquid supply module, disposed on the pipeline; and

[0022] The control module receives the Boolean signal from the crystallization sensing module and turns on or off the liquid supply module according to the Boolean signal.

[0023] In the above scheme, the crystallization sensing module detects the crystallization of the outer wall of the pump core in real time and transmits the detection signal to the control module. The control module turns on or off the liquid supply module according to the signal transmitted by the crystallization sensing module. The liquid supply module can flow the cleaning liquid to the pump core by itself. The combination of cleaning liquid and wiper can realize automatic cleaning without manual observation or disassembly and maintenance.

[0024] Furthermore, the crystallization sensing module utilizes a through-beam sensor, whose light is directed close to the surface of the pump core, and whose signal terminal is electrically connected to the control module. If the through-beam sensor's light is not blocked by crystals, the control module outputs a low level. If crystals block the through-beam sensor's light, the control module outputs a high level, thereby detecting whether crystals are present on the surface of the pump core.

[0025] The above technical solution has the following advantages:

[0026] The utility model provides a liquid outlet component and a brushing component at the telescopic part of the pump core. The liquid outlet component provides cleaning liquid to the periphery of the pump core. The cleaning liquid flows to the outer peripheral wall of the pump core and rinses and dissolves the crystals on the periphery of the pump core to reduce the crystallization on the periphery of the pump core. At the same time, the brushing component wipes the solid-liquid mixture as the pump core moves, further reducing the accumulation of crystals on the periphery of the pump core and improving the stability of the injection pump during operation. At the same time, the number of crystals on the outer wall of the pump core is reduced, which can avoid the crystallization from changing the flow characteristics of the vacuum cavity, improve the accuracy of electrolyte transportation, and improve the production quality of the battery.

[0027] The present invention also adopts a cleaning system, which detects the crystallization of the outer wall of the pump core in real time through the crystallization sensing module, and transmits the detected signal to the control module. The control module opens or closes the liquid supply module according to the signal transmitted by the crystallization sensing module, and the liquid supply module can flow the cleaning liquid to the pump core by itself. The combination of cleaning liquid and wiping piece can greatly improve the cleaning effect of the crystallization on the outer wall of the pump core, thereby realizing automatic cleaning without the need for manual observation or disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0029] Figure 1 It is a schematic diagram of the explosion structure of the prior art;

[0030] Figure 2 It is a structural diagram of the utility model;

[0031] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0032] Figure 4 This is a schematic structural diagram of the cleaning system of the present utility model.

[0033] In the figure: 1. Pump core; 2. Fixed cover; 3. Outer shell; 4. Liquid outlet; 5. Pump body; 6. Plug; 7. Liquid inlet; 8. Support; 9. Cleaning liquid outlet; 10. First bracket; 11. Crystallization sensing module; 12. Wiping piece; 13. Waste liquid outlet; 14. Second bracket; 15. Liquid storage tank; 16. Propylene carbonate; 17. Cleaning liquid interface; 18. Pipeline; 19. Liquid supply module; 20. Control module; 21. Signal line. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the present invention and do not constitute a limitation to the present invention.

[0035] Figure 1It is a structural schematic diagram of the liquid injection pump in the prior art, which is labeled 1-pump core, 2-fixed cover, 3-shell, 4-upper liquid outlet, 5-pump body, 6-plug, 7-lower liquid inlet, 8-base; its working process is that the external motor starts the action, driving the pump core 1 to move axially back and forth and rotate at the same time. When the pump core 1 moves forward in the axial direction, a vacuum is formed between the pump core 1 and the plug 6. At the same time, the groove at the end of the pump core 1 is just on the lower side and connected to the lower liquid inlet 7. At this time, the electrolyte enters the vacuum space along the lower liquid inlet 7. At this time, the pump core 1 continues to move axially and rotate at the same time. When the groove at the end of the pump core 1 rotates to the upper side, the space inside the pump body is connected to the upper liquid outlet 4. At this time, the pump core 1 continues to move backward, and the electrolyte in the vacuum space is squeezed out along the upper liquid outlet 4. This process is repeated.

[0036] like Figure 2 and Figure 3 As shown, a battery filling pump cleaning device includes a pump body 5, a pump core 1 that moves in combination with the pump body 5, and a liquid outlet 4 and a liquid inlet 7 that connect the pump core 1 and the vacuum cavity of the pump body 5. It also includes a liquid outlet component and a brushing component. The liquid outlet component is arranged on the side of the pump body 5 where the pump core 1 is telescopic, and is used to provide cleaning liquid to the outer peripheral wall of the pump core 1; the brushing component is arranged on the same side of the pump body 5 as the liquid outlet component, and is used to wipe the crystals on the outer peripheral wall of the pump core 1. Among them, the pump core 1, the liquid outlet 4, the pump body 5 and the liquid inlet 7 constitute a basic unit of a liquid injection pump. At this time, the pump body 5 is a structure that is sealed at one end and open at the other end. The open part is used for the pump core 1 to realize compound movement, and the sealed end is used to form a vacuum cavity. The pump core 1 slides along the axial direction on the liquid outlet 4 and rotates at the same time. The vacuum cavity formed by the pump core 1 in the pump body 5 during the movement sucks the electrolyte at the liquid inlet 7. As the pump core 1 squeezes the electrolyte sucked into the vacuum cavity, the electrolyte flows out from the liquid outlet 4, thereby realizing the liquid injection operation. In this application, the liquid outlet 4 and the liquid inlet 7 are respectively installed on the upper and lower sides of the liquid outlet 4.

[0037] As an implementation method in this embodiment, specifically, the cleaning liquid can be selected according to the characteristics of the electrolyte. For example, the present application uses a lithium battery, so the electrolyte of the lithium battery is made into a solution and rinsed, so the cleaning liquid uses propylene carbonate 16, dimethyl carbonate, ionic liquid, organic solvent (such as tetrahydrofuran (THF), dimethyl sulfoxide (DMSO)), etc.; if a nickel-hydrogen battery is used, the cleaning liquid can be replaced with an alkaline solution or an organic solvent; if a nickel-cadmium battery is used, the cleaning liquid can be replaced with an organic solvent such as a carbonate solvent; if a lead-acid battery is used, the cleaning liquid can be replaced with sulfuric acid or deionized water; the specific selection is made by those skilled in the art.

[0038] As an implementation method in this embodiment, Figure 2As shown, the liquid outlet component can be directed toward the outer wall of the pump core 1 in the form of an external nozzle, and the position of the nozzle can be adjusted at will; cleaning liquid can also be poured into the outer wall of the pump core 1 during the compound movement of the pump core 1; in order to improve the stability of the outflow of the cleaning liquid and reduce the space occupancy rate, the liquid outlet component includes a first bracket 10 and a cleaning liquid outlet 9 installed on the first bracket 10, wherein the first bracket 10 can be installed on the pump body 5, and can also be fixed to the pump body 5 by an intermediate block. In this application, the outer wall of the pump body 5 is fixedly installed with a shell 3, and the shell 3 is used to wrap the pump body 5 to improve the pump The cleaning liquid outlet 9 is preferably in the form of a nozzle, and the nozzle sprays the cleaning liquid in the direction of the pump core 1. The cleaning liquid outlet 9 can also be set directly above the pump core 1. In this case, there is no need to use a nozzle. It is only necessary to use a tube aligned with the pump core 1, or to open a liquid outlet hole aligned with the pump core 1 on the first bracket 10. The cleaning liquid can flow to the outer wall of the pump core 1 only by gravity.

[0039] The brushing assembly includes a wiper 12 attached to the outer periphery of the pump core 1. The number of wipers 12 can be set individually. Because the pump core 1 and the pump body 5 perform a complex motion, the pump core 1 will come into contact with the wiper 12 during the motion. The wiper 12 wipes the crystals on the outer wall of the pump core 1, causing the crystals on the outer wall of the pump core 1 to fall off. At the same time, combined with the flushing and dissolution of the cleaning fluid, it can effectively prevent the crystals from adhering to the outer peripheral wall of the pump core 1, improve the stability of the pump core 1 during motion, and prevent the crystals from changing the flow characteristics of the vacuum cavity, thereby improving the accuracy of the electrolyte in the vacuum cavity of the pump body 5.

[0040] like Figure 2 As shown, in order to further improve the cleaning effect of the crystals on the periphery of the pump core 1 and avoid the situation where part of the pump core 1 does not contact the wiper 12 when it is extended, resulting in a dead corner of wiping, the number of wipers 12 is set to be multiple, and the multiple wipers 12 are distributed around the axis of the pump core 1 to increase the wiping area of ​​the periphery of the pump core 1. The wiper 12 can be handheld and used only when wiping crystals; the wiper 12 can also be fixed to the ground, work surface, etc. Preferably, the wiper 12 is fixed to the housing 3, which helps to form a whole and facilitates the continuity of the mechanism; the wiper 12 can be used to wipe the crystals in the form of a brush or cloth. In this application, it is preferred that the wiper 12 is fixed to the first bracket 10 and is arranged outside the cleaning liquid outlet 9. If the cleaning liquid outlet 9 adopts the nozzle method, when the water flow collides with the outer wall of the pump core 1, the wiper 12 blocks the splashing liquid, preventing the cleaning liquid from being sprayed everywhere, and effectively blocking the splashing effect of the splashing cleaning liquid.

[0041] In this embodiment, a second bracket 14 is also fixed to the outer wall of the wiping member 12, the wiping member 12 and the cleaning liquid outlet 9 are symmetrically arranged about the pump core 1, the wiping member 12 and the first bracket 10 are symmetrically distributed about the pump core 1, and the second bracket 14 is provided with a waste liquid port 13 on the same side of the liquid inlet 7. The waste liquid port 13 is provided at the bottom end of the second bracket 14. When the cleaning liquid outlet 9 is directly above the pump core 1 and provides cleaning liquid to the outer peripheral wall of the pump core 1, the cleaning liquid flows to the pump core 1 with gravity, and flows to the waste liquid port 13 after flushing and dissolving the crystals. The waste liquid port 13 discharges the cleaning liquid that dissolves the crystals.

[0042] As an implementation method in this embodiment, Figure 3 As shown, a plug 6 is fixed to the side of the pump body 5 facing the liquid outlet component, and a vacuum cavity can be formed between the pump core 1, the pump body 5 and the plug 6, wherein the pump body 5 is a cylinder with both ends open, and the plug 6 is used to seal one side of the vacuum cavity. The plug 6 is preferably sealed by tightening a thread, and the distance that the plug 6 extends into the pump body 5 can be adjusted, and the size of the vacuum cavity can be adjusted accordingly.

[0043] As an implementation method in this embodiment, Figure 3 As shown, the outer wall of the pump body 5 is fixed with an outer shell 3, and a fixed cover 2 is fixed on the side of the outer shell 3 facing the telescopic pump core 1. The liquid outlet component and the brushing component are both installed on the fixed cover 2. The fixed cover 2 fixes the pump body 5 to the inner wall of the outer shell 3 and is fixed by bolts to prevent the pump body 5 from falling off from the outer shell 3; the crystallization sensing module 11 in the liquid outlet component and the second bracket 14 in the brushing component are both fixed on the side of the fixed cover 2 away from the pump body 5, and are also fixed by bolts to facilitate their disassembly and maintenance.

[0044] like Figure 3 and Figure 4 As shown, a cleaning system includes a crystallization sensing module 11, a liquid storage tank 15 for containing cleaning liquid, a liquid supply module 19 and a control module 20. The crystallization sensing module 11 is arranged on the side of the pump body 5 where the pump core 1 is retracted. The crystallization sensing module 11 is used to detect crystallization on the outer wall of the pump core 1; the liquid storage tank 15 and the liquid outlet component are connected through a pipe 18; the liquid supply module 19 is arranged on the pipe 18; the control module 20 receives the Boolean signal of the crystallization sensing module 11 and turns on or off the liquid supply module 19 according to the Boolean signal.

[0045] The principle process of this intelligent cleaning system:

[0046] ① Start the control module 20. At this time, the crystallization sensing module 11 and the liquid supply module 19 are powered on. The crystallization sensing module 11 detects the surface of the pump core 1 to determine whether crystallized material has accumulated on the surface of the pump core 1. When crystallization is detected, a high-level signal is sent to the control module 20 via the signal line 21.

[0047] ② After the signal end of the control module 20 receives the high-level signal from the crystallization sensing module 11, it is determined that there is crystallized material on the surface of the pump core 1. The signal end of the control module 20 sends a start signal to the liquid supply module 19 through the signal line 21, and the liquid supply module 19 starts to open;

[0048] ③ At this time, the cleaning liquid in the liquid storage tank 15 passes through the liquid supply module 19, the liquid supply module 19, and the cleaning liquid outlet 9 and is sprayed onto the pump core 1. The cleaning liquid dissolves and flushes the electrolyte crystals;

[0049] ④ At this time, the pump core 1 is still rotating, and the solid-liquid mixture on the surface of the pump core 1 is scrubbed away by the wiping piece 12 attached to the pump core 1;

[0050] ⑤ The solid-liquid mixture washed off is discharged along the waste liquid outlet 13.

[0051] ⑥ After cleaning for a certain period of time, the surface of the pump core 1 is clean and free of crystals. The crystallization sensing module 11 detects that there is no obstruction to the crystals and sends a low-level signal to the control module 20 through the signal line 21. The lower end of the control module 20 sends a stop signal to the liquid supply module 19 through the signal line 21, and the electric ball valve is closed, thereby realizing this intelligent cleaning process.

[0052] Specifically, the model of control module 20 can be selected by those skilled in the art. A cleaning liquid interface 17 is provided at one end of pipe 18 connected to liquid reservoir 15. Cleaning liquid interface 17 is tightened with a bolt. When the cleaning liquid in liquid reservoir 15 is used up, it can be manually unscrewed and liquid reservoir 15 can be replaced, improving the convenience of replacement. Liquid supply module 19 can be an electric valve, such as an electric ball valve or solenoid valve. Liquid supply module 19 opens when it receives a high-level signal from control module 20 and closes when it receives a low-level signal.

[0053] The crystallization sensing module 11 adopts a through-beam sensor. The light of the through-beam sensor is close to the surface of the pump core 1. The signal end of the through-beam sensor is electrically connected to the control module 20. When the light of the through-beam sensor is not blocked by the crystal, the control module 20 outputs a low level. If the crystal blocks the light of the through-beam sensor, a high level is output toward the control module 20 to detect whether there is crystal on the surface of the pump core 1. In addition, a camera or a visual sensor can be installed to regularly capture images of the outside of the pump core 1, and the formation of crystals can be detected through image analysis software, and a Boolean signal is generated and sent to the control module 20.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A battery filling pump cleaning device, comprising a pump body (5), a pump core (1) that moves in combination with the pump body (5), and a liquid outlet (4) and a liquid inlet (7) that communicate with the pump core (1) and the vacuum cavity of the pump body (5), characterized in that: Also includes: A liquid outlet assembly is provided on the side of the pump body (5) where the pump core (1) is retracted, and is used to provide cleaning liquid to the outer peripheral wall of the pump core (1); and A brushing assembly is provided on the same side of the pump body (5) as the liquid outlet assembly and is used to wipe crystals on the outer peripheral wall of the pump core (1).

2. The battery filling pump cleaning device according to claim 1, characterized in that: The liquid outlet assembly comprises a first bracket (10) and a cleaning liquid outlet (9) mounted on the first bracket (10).

3. The battery filling pump cleaning device according to claim 2, characterized in that: The brushing assembly comprises a wiper (12) attached to the outer periphery of the pump core (1).

4. The battery filling pump cleaning device according to claim 3, characterized in that: The plurality of wipers (12) are distributed circumferentially about the axis of the pump core (1).

5. The battery filling pump cleaning device according to claim 3, characterized in that: A second bracket (14) is also fixed to the outer wall of the wiping member (12), and the second bracket (14) is provided with a waste liquid port (13) on the same side as the liquid inlet (7).

6. The battery filling pump cleaning device according to claim 3, characterized in that: The wiping piece (12) and the cleaning liquid outlet (9) are symmetrically distributed on both sides of the pump core (1).

7. The battery filling pump cleaning device according to claim 1, wherein: A plug (6) is fixed to the side of the pump body (5) facing the liquid outlet assembly, and the vacuum cavity can be formed between the pump core (1), the pump body (5) and the plug (6).

8. The battery filling pump cleaning device according to claim 1, wherein: An outer shell (3) is fixed to the outer wall of the pump body (5); a fixed cover (2) is fixed to the side of the outer shell (3) facing the expansion and contraction of the pump core (1); and the liquid outlet assembly and the brushing assembly are both mounted on the fixed cover (2).

9. A cleaning system, using the battery filling pump cleaning device according to any one of claims 1 to 8, characterized in that: include: a crystallization sensing module (11), provided on a side of the pump body (5) where the pump core (1) is retracted, and the crystallization sensing module (11) is used to detect crystallization on the outer wall of the pump core (1); A liquid storage tank (15) containing cleaning liquid, wherein the liquid storage tank (15) and the liquid outlet assembly are connected via a pipe (18); a liquid supply module (19), arranged on the pipeline (18); as well as The control module (20) receives the Boolean signal from the crystallization sensing module (11) and turns on or off the liquid supply module (19) according to the Boolean signal.

10. The cleaning system according to claim 9, wherein: The crystallization sensing module (11) adopts a beam sensor, the light of the beam sensor is close to the surface of the pump core (1), and the signal end of the beam sensor is electrically connected to the control module (20).

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