Device for improving bubbles of coating slurry

Abstract

The utility model discloses a device for improving bubbles of coating slurry, which comprises a tank body, a stirring device and a stirring device, the conveying pump is used for conveying the slurry; the filter cartridge is arranged in the tank body, and an opening communicated with the feed port is formed in the top of the filter cartridge, so that under the action of the conveying pump, slurry directly enters the filter cartridge from the feed port and then flows into the tank body through meshes of the filter cartridge to realize primary defoaming; and the vibration structure is arranged on the tank body and is used for defoaming the slurry flowing into the tank body again. According to the device, bubbles in the slurry can be effectively eliminated, the uniformity of the slurry can be improved, coating and defoaming can be synchronously carried out, and the slurry is prevented from precipitating in the process of waiting for coating.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium ion battery production equipment technical field especially relates to a device that improves coating slurry bubble. BACKGROUND

[0002] Lithium battery slurry can produce bubbles in the process of homogenate and delivery, if these bubbles cannot be eliminated in time, the rupture of the bubbles in the slurry can cause coating surface leakage, bubble pit and the like in the subsequent drying, influence the appearance and use performance of the coated pole piece. The defoaming method of traditional slurry generally adopts the way of adding defoaming agent or vacuum to defoam the slurry, then transports the treated slurry to the coating head. The method of adding defoaming agent must be carried out in the previous process state of slurry coating, cannot defoam the slurry in the slurry coating circulation system, and when the slurry treated by defoaming agent is transported to the coating device by the delivery pump, new bubbles can also be produced in the pumping pipeline, which affects the coating effect. And the vacuum defoaming way, when the tank containing slurry is vacuumized and the inside of the tank is restored to atmospheric pressure for slurry transportation, cannot avoid the sedimentation of the slurry in the long waiting process, and can only be treated by returning to the tank after the sedimentation problem of the slurry occurs.

[0003] Therefore, it is necessary to design a device for improving coating slurry bubbles to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a device for improving coating slurry bubbles, which can effectively eliminate bubbles in the slurry and improve the uniformity of the slurry, and can realize synchronous coating and defoaming.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A device for improving coating slurry bubbles, comprising:

[0007] A tank is provided with a feed inlet and a discharge outlet;

[0008] A delivery pump is used for slurry delivery;

[0009] A filter cartridge is arranged in the tank, and the filter cartridge is provided with an opening in communication with the feed inlet, so that under the action of the delivery pump, the slurry directly enters the filter cartridge from the feed inlet and then flows into the tank through the mesh holes of the filter cartridge to realize preliminary defoaming;

[0010] A vibration structure is arranged on the tank to defoam the slurry flowing into the tank again.

[0011] As a further improvement of the utility model, the filter aperture of the filter cartridge is 80-120 mesh.

[0012] As a further improvement of the utility model, the filter cartridge is a cylinder, the opening is arranged on the top surface of the filter cartridge, and the side wall and the bottom surface of the filter cartridge are both screen structures capable of filtering liquid.

[0013] As a further improvement of the utility model, the filter cartridge is suspended in the middle of the tank body in the axial direction parallel to the tank body.

[0014] As a further improvement of the utility model, the length of the filter cartridge is 3 / 5-3 / 4 of the length of the tank body.

[0015] As a further improvement of the utility model, the tank body is a heat exchange tank with a heating effect.

[0016] As a further improvement of the utility model, when the tank body is in a horizontal state, the discharge port is arranged in the middle of the side of the tank body away from the feeding port.

[0017] As a further improvement of the utility model, when the tank body is in a horizontal state, in the axial direction of the tank body, the vibration structure is arranged at the middle position of the tank body.

[0018] As a further improvement of the utility model, the feeding port is connected with a slurry input pipeline, and the conveying pump is arranged on the slurry input pipeline.

[0019] The utility model has the advantages of:

[0020] 1. The utility model transports the stirred slurry to the filter cartridge in the middle of the tank body through the conveying pump, so that the slurry enters the inside of the tank body through the mesh holes of the filter cartridge. In this process, on the one hand, the mesh holes can make the slurry pass through but the relatively large bubbles cannot pass through, so that the relatively large bubbles in the slurry can be eliminated, and then, under the secondary defoaming action of the vibration structure on the relatively small bubbles, the bubbles in the slurry can be effectively eliminated. On the other hand, since the filter cartridge is located in the middle of the tank body, the slurry flowing out of the filter cartridge can enter the tank body in different directions, the kinetic energy of the slurry flowing out of the filter cartridge is improved through the cooperation of the conveying pump and the filter cartridge, so that the slurry located around the filter cartridge can be effectively agitated, the flow of the slurry in the tank body is effectively promoted, the slurry is prevented from depositing, and the slurry has good uniformity and better flow leveling effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the device for improving coating slurry bubbles.

[0022] REFERENCE NUMERALS

[0023] 10, tank; 11, feeding port; 12, discharging port; 20, conveying pump; 30, filter cartridge; 40, vibrating structure; 51, slurry input pipeline; 52, slurry output pipeline; 53, valve; 60, storage tank; 70, coating structure. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be described in detail below with reference to the drawings and specific embodiments.

[0025] Here, it also needs to be explained that, in order to avoid the present application being obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme of the present application are shown in the drawings, and other details not closely related to the present application are omitted.

[0026] In addition, it also needs to be explained that the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment.

[0027] Please refer to Figure 1 As shown in the drawings, the present application provides a device for improving coating slurry bubbles, comprising:

[0028] A tank 10, wherein the tank 10 is provided with a feeding port 11 and a discharging port 12;

[0029] A conveying pump 20 for slurry conveying;

[0030] A filter cartridge 30 arranged inside the tank 10, wherein the top surface of the filter cartridge 30 is provided with an opening in communication with the feeding port 11, so that under the action of the conveying pump 20, the slurry directly enters the filter cartridge 30 from the feeding port 11 and then flows into the inside of the tank 10 through the mesh holes of the filter cartridge 30 to realize preliminary defoaming;

[0031] A vibrating structure 40 arranged on the tank 10 to perform secondary defoaming on the slurry flowing into the inside of the tank 10.

[0032] Specifically, the filter cartridge 30 is suspended in the middle of the tank body 10 along the axial direction of the tank body 10, and the filter cartridge 30 is a cylinder, the side wall and the bottom wall of the filter cartridge 30 are both filter screen structures, and the filter pore size of the filter screen structure is 80-120 mesh. By suspending the filter cartridge 30 in the middle of the tank body 10, the slurry can enter the filter cartridge 30 and then enter the inside of the tank body 10 along the side wall and the bottom wall of the filter cartridge 30. In this process, on the one hand, the relatively large bubbles in the slurry can be eliminated by using the mesh to allow the slurry to pass through while the relatively large bubbles cannot pass through, and then the relatively small bubbles can be eliminated by the secondary defoaming action of the vibration structure 40, thereby effectively eliminating the bubbles in the slurry; on the other hand, since the filter cartridge 30 is suspended in the middle of the tank body 10, the slurry flowing out of the filter cartridge 30 can enter the tank body 10 in different directions, and the slurry flowing out of the filter cartridge 30 can have a certain kinetic energy under the cooperation of the filter cartridge 30 and the conveying pump 20, thereby enabling the slurry with a certain kinetic energy entering the tank body 10 in different directions to agitate the slurry around the filter cartridge 30 to some extent, thereby effectively promoting the flow of the slurry in the tank body 10, avoiding the precipitation of the slurry, and making the slurry have better uniformity and better flow leveling effect.

[0033] Specifically, the tank body 10 is placed horizontally; the length of the filter cartridge 30 is 3 / 5-3 / 4 of the length of the tank body 10, which can increase the slurry filtration efficiency and improve the agitation range of the slurry along the axial direction of the tank body 10.

[0034] Specifically, the tank body 10 is a heat exchange tank with heating effect, or a heating device for increasing the temperature of the slurry in the tank body 10 can be provided on the tank body 10, so as to increase the flowability of the slurry by increasing the temperature of the slurry, and then cooperate with the agitation effect of the slurry around the filter cartridge 30 flowing into the inside of the tank body 10 to effectively promote the flow of the slurry in the tank body 10.

[0035] Specifically, when the tank body 10 is in a horizontal state, the discharge port 12 is arranged in the middle of the side of the tank body 10 away from the inlet port 11, so that under the pressure action of the conveying pump 20, the slurry enters the inside of the tank body 10 through the inlet port 11 and the filter cartridge 30 in turn and then flows out of the discharge port 12.

[0036] Specifically, when the tank body 10 is in a horizontal state, the vibration structure 40 is arranged at the middle position of the tank body 10 along the axial direction of the tank body 10, so as to improve the vibration effect, and the vibration structure 40 is a low-frequency vibrator arranged on the outer wall of the tank body 10.

[0037] Specifically, the slurry input pipeline 51 is connected to the feed inlet 11, and the slurry input pipeline 51 is connected to the storage tank 60 at the end away from the feed inlet 11. The delivery pump 20 is arranged on the slurry input pipeline 51 to deliver the stirred slurry in the storage tank 60 to the tank body 10.

[0038] Specifically, the slurry output pipeline 52 is connected to the discharge outlet 12, and the slurry output pipeline 52 is connected to the coating structure 70 for slurry coating at the end away from the discharge outlet 12. The valve 53 is further arranged on the slurry output pipeline 52.

[0039] Specifically, in use, under the action of the delivery pump 20, the stirred slurry in the storage tank 60 enters the feed inlet 11 through the slurry input pipeline 51, and enters the filter cartridge 30 through the opening in communication with the feed inlet 11. Under the pressure action of the delivery pump 20, the slurry enters the inside of the tank body 10 through the mesh of the filter cartridge 30. At this time, the relatively large bubbles in the slurry cannot pass through the mesh of the filter cartridge 30, thereby preliminarily defoaming the slurry. Meanwhile, the slurry flowing out of the filter cartridge 30 has a certain kinetic energy, which can agitate the slurry around the filter cartridge 30. In combination with the heating of the heat exchange tank to improve the fluidity of the slurry, the precipitation of the slurry in the tank body 10 can be avoided. In addition, the relatively small bubbles in the slurry flowing into the inside of the tank body 10 are secondarily defoamed by the vibration of the vibration structure 40 on the tank body 10, which can effectively eliminate the bubbles in the slurry, so that there are no bubbles in the slurry transported to the coating structure 70 through the discharge outlet 12 and the slurry output pipeline 52, which can affect the appearance and service life of the coated pole piece.

[0040] The device for improving the bubbles of coating slurry of the utility model can be continuously opened during the coating of the slurry to defoam the slurry transported to the coating structure 70, so as to avoid the precipitation of the slurry in the waiting process due to the interval time difference between the transportation, defoaming and coating.

[0041] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit. Although the utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the utility model.

Claims

1. An apparatus for improving air bubbles in coating slurry, characterized in that, include: A tank body, wherein the tank body is provided with a feed inlet and a discharge outlet; Transfer pumps are used for conveying slurry. A filter cartridge is installed inside the tank. The filter cartridge has an opening that communicates with the feed inlet, so that under the action of the conveying pump, the slurry enters the filter cartridge directly from the feed inlet and flows into the tank through the mesh of the filter cartridge to achieve preliminary defoaming. A vibration structure is installed on the tank body to further defoam the slurry flowing into the tank body.

2. The apparatus for improving air bubbles in coating slurry according to claim 1, characterized in that: The filter cartridge has a filtration pore size of 80-120 mesh.

3. The apparatus for improving air bubbles in coating slurry according to claim 2, characterized in that: The filter cartridge is cylindrical, with the opening located on the top surface of the filter cartridge. The side walls and bottom surface of the filter cartridge are both screen structures capable of filtering liquids.

4. The apparatus for improving air bubbles in coating slurry according to claim 3, characterized in that: The filter cartridge is suspended in the middle of the tank along a direction parallel to the tank's axial direction.

5. The apparatus for improving air bubbles in coating slurry according to claim 4, characterized in that: The length of the filter cartridge is 3 / 5 to 3 / 4 of the length of the tank.

6. The apparatus for improving air bubbles in coating slurry according to claim 1, characterized in that: The tank is a heat exchange tank with heating effect.

7. The apparatus for improving air bubbles in coating slurry according to claim 1, characterized in that: When the tank is in a horizontal position, the discharge port is located in the middle of the side of the tank away from the inlet.

8. The apparatus for improving air bubbles in coating slurry according to claim 7, characterized in that: When the tank is in a horizontal position, the vibration structure is located in the middle of the tank along the axial direction.

9. The apparatus for improving air bubbles in coating slurry according to claim 1, characterized in that: A slurry input pipe is connected to the feed inlet, and the delivery pump is installed on the slurry input pipe.

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