Primer box and slurry circulating feeding system

Abstract

The utility model discloses a primer box and a slurry circulation feeding system, the primer box comprises a material box body, the bottom of the material box body is provided with a feeding port, the feeding port is provided with a flow guide block, the bottom of the material box body is provided with a backflow step, the backflow step is provided with a material return port, and the material return port is provided with a material outlet. And the height of the material returning opening is higher than that of the feeding opening. The slurry circulating feeding system comprises the primer box, a slurry tank and a circulating assembly, and a feeding channel and a backflow channel are formed among the slurry tank, the circulating assembly and the primer box, so that the slurry is recycled. The device has the advantages that the precipitation degree of the slurry in the primer box is effectively reduced, the uniform solid content of the slurry is ensured, the liquid level height in the primer box is stably kept, the slurry is recycled, and the material and labor cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a primer box and a slurry circulation feeding system. Background Art

[0002] Coating machines are of great significance for the coating of lithium-ion battery pole pieces. They are the most important core equipment for lithium battery front-end processing equipment. When the conventional primer box is coated for a long time, the solvent in the slurry is easy to volatilize, and the slurry in the box will settle at the bottom. The solid content of the slurry during coating and the depth of the anilox roller entering the slurry are important parameters for primer coating. Maintaining a uniform solid content of the slurry in the box and stably maintaining the liquid level in the box are the keys to improving coating quality.

[0003] In the existing technical solutions, the pressure of the feed reflux pneumatic diaphragm pump is usually adjusted manually to match the feed reflux speed to ensure the liquid level, and the slurry deposited at the bottom of the Liaohe River needs to be manually cleaned at regular intervals.

[0004] In view of this, the purpose of the utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a primer box and a slurry circulation feeding system, which solves the problem that the slurry in the primer box is easy to precipitate and the primer box needs to be cleaned frequently by manual labor.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A primer box comprises a box body, a feed port is provided at the bottom of the box body, a guide block is arranged on the feed port, a reflux step is provided at the bottom of the box body, a return port is provided on the reflux step, and the return port is located at a height higher than the feed port.

[0008] In the above structure, the bottom of the material box body is in a "V" shape, and a drainage outlet is opened in the middle of the material box body.

[0009] In the above structure, there are two feed ports, and the two feed ports are symmetrically arranged at the bottom of the material box body.

[0010] In the above structure, the guide block is in a concave shape.

[0011] The utility model also provides a slurry circulation feeding system, including a primer box with the structure as described above, and also including a circulation component and a slurry tank, the circulation component includes a feed pipe, a return pipe, a feed diaphragm pump and a return diaphragm pump, the slurry tank, the feed diaphragm pump, the feed pipe and the feed port are connected in sequence to form a feed channel, and the slurry tank, the return diaphragm pump, the discharge pipe and the return port are connected in sequence to form a reflux channel.

[0012] In the above structure, the circulation component further comprises a liquid level sensor arranged on the primer box, the feed diaphragm pump is connected to a solenoid valve, and the solenoid valve is electrically connected to the liquid level sensor.

[0013] In the above structure, the working flow rate of the feed diaphragm pump is always greater than the working flow rate of the return diaphragm pump.

[0014] In the above structure, it also includes an anilox roller arranged above the primer box.

[0015] In the above structure, filters are provided between the slurry tank and the feed pipe and between the slurry tank and the return pipe.

[0016] The above structure also includes a transport trolley, on which the slurry tank, feed diaphragm pump, reflux diaphragm pump and filter are all arranged.

[0017] The beneficial effects of the utility model are as follows: the utility model provides a primer box and a slurry circulation feeding system, a guide block is arranged at the feed inlet of the primer box, and a reflux step is arranged, the return port is opened on the reflux step, the slurry circulation feeding system includes the primer box, when the slurry circulation feeding system is used for coating work, the precipitation degree of the slurry can be reduced, the slurry liquid level in the primer box is kept stable, which is beneficial to improving the primer effect; and the slurry recycling operation is simple, which effectively reduces the frequency of cleaning the material box and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the bottom coating box in the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the slurry circulation feeding system in the utility model;

[0021] Figure 3 It is a schematic diagram of the connection structure of the circulation components in the utility model.

[0022] Figure numerals: 1. Material box body; 11. Reflux step; 111. Return port; 12. Drain port; 2. Guide block; 3. Circulation component; 31. Feed pipe; 32. Discharge pipe; 33. Feed diaphragm pump; 34. Reflux diaphragm pump; 35. Pressure regulating valve; 4. Transport trolley; 5. Liquid level sensor; 6. Anilox roller; 7. Filter; 8. Slurry tank. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-3 The utility model is further described.

[0024] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0025] Reference Figures 1 to 3 The utility model provides a primer box, including a box body 1, on which a feed inlet (not shown in the figure) and a return port 111 are provided. The box body 1 is an open box structure without a cover. The primer box of the utility model can be installed in a coating machine or a coating production line by bolts and nuts or other detachable fixing parts. Among them, the feed inlet is provided at the bottom of the box body 1, and a guide block 2 located above the feed inlet is fixedly connected to the bottom of the box body 1; a reflux step 11 is provided at the bottom of the box body 1, and the return port 111 is provided on the reflux step 11. In this embodiment, the reflux step 11 is integrally formed with the box body 1, and the reflux step 11 is a stepped structure formed by lifting the bottom of the box body 1 upward. The return port 111 is provided on the reflux step 11, so that the height of the return port 111 is higher than the height of the feed inlet. The bottom of the material box body 1 is in a "V" shape, that is, the bottom of the material box body 1 is inclined toward the middle on both sides. A drain port 12 is opened in the middle of the material box body 1, and the drain port 12 is located in the middle position of the bottom of the material box body 1. With this arrangement, when it is necessary to drain the slurry in the primer box or clean the primer box, the bottom of the material box body 1 is inclined toward the drain port 12, which guides and drains the liquid substance in the material box body 1, which is conducive to the drain port 12 draining the substance in the material box body 1.

[0026] The return port 111 is opened on the return step 11 to ensure that the liquid level is always maintained at a fixed height, effectively reducing the possibility of affecting the coating quality due to the inconsistent slurry liquid level caused by the difference in the speed of the inlet and outlet slurry.

[0027] The bottom of the material box body 1 is fixedly connected with a guide block 2 located above the feed port. The guide block 2 is in a "concave" shape. The guide block 2 covers the feed port and the middle of the "concave" structure is connected to the feed port. When the slurry enters from the feed port, due to the guiding effect of the guide block 2, the slurry is guided to both sides, so that the slurry can flow along the bottom of the material box body 1, that is, the slurry at the bottom is in a flowing state during the feeding process, which can disturb the slurry in the material box body 1 and effectively slow down the precipitation at the bottom of the material box body 1. In this embodiment, there are two feed ports, which are symmetrically opened on both sides of the "V"-shaped structure at the bottom of the material box body 1, and two corresponding guide blocks 2 are also provided. The two guide blocks 2 are arranged one by one with the feed ports.

[0028] Reference Figures 1 to 3 The utility model also provides a slurry circulation feeding system, including a primer box of the structure as described above, and also including a circulation component 3 and an anilox roller 6, wherein the primer box is used to provide slurry to the anilox roller 6, and then the coating work is performed through the anilox roller 6, and the circulation component 3 is used to realize the slurry circulation in the primer box to slow down the slurry precipitation, and recycle the slurry, which is conducive to reducing material and labor costs. The circulation component 3 includes a slurry tank 8, a feed diaphragm pump 33, a reflux diaphragm pump 34, a feed pipe 31 and a reflux pipe. The slurry tank 8 is used to transport slurry to the primer box or recover the slurry refluxed from the primer box. The feed diaphragm pump 33 is used to pump the slurry in the slurry tank 8 into the primer box, and the reflux diaphragm pump 34 is used to pump the slurry exceeding the reflux step 11 back to the slurry tank 8. The withdrawn slurry can be transferred to the primer box through the feed diaphragm pump 33 for coating operation, forming a slurry recycling.

[0029] Specifically, the slurry tank 8, the feed diaphragm pump 33, the feed pipe 31 and the feed port of the material box body 1 are connected in sequence to form a feed pipe; the slurry tank 8, the reflux diaphragm pump 34, the discharge pipe 32 and the return port 111 are connected in sequence to form a reflux channel. The circulation component 3 also includes a liquid level sensor 5, which is fixedly arranged on the material box body 1 and is used to sense the liquid level in the material box body 1. The feed diaphragm pump 33 is connected to an electromagnetic valve (not shown in the figure), and the electromagnetic valve is electrically connected to the liquid level sensor 5. Among them, the liquid level sensor 5 is used to detect the liquid level of the slurry in the material box body 1 and send a signal to the electromagnetic valve; the electromagnetic valve is used to control the working state of the feed diaphragm pump 33. When the liquid level sensor 5 detects that the liquid level in the material box body 1 reaches the calibrated high liquid level, a corresponding control signal is sent to the solenoid valve, and the solenoid valve controls the feed diaphragm pump 33 to stop feeding, effectively reducing the possibility of slurry overflowing from the primer box; when the liquid level sensor 5 detects that the liquid level is lower than the calibrated low liquid level value, a corresponding control signal is sent to the solenoid valve, and the solenoid valve controls the feed diaphragm pump 33 to feed. In this way, the slurry liquid level in the primer box is kept relatively constant, so that the depth of the anilox roller 6 immersed in the slurry remains stable, which is conducive to ensuring the coating quality.

[0030] Furthermore, the working flow of the feed diaphragm pump 33 is always greater than the working flow of the reflux diaphragm pump 34. Specifically, the feed diaphragm pump 33 and the reflux diaphragm pump 34 are both provided with a pressure regulating valve 35, and the pressure regulating valve 35 controls the working flow of the corresponding pump body respectively, and controls the working flow of the reflux diaphragm pump 34 to be greater than the working flow of the feed diaphragm pump 33, so as to further ensure that the liquid level is controlled near the height of the reflux step 11, and the liquid level is constant. Filters 7 are provided on both the feed channel and the reflux channel. By providing the filter 7, large particles or impurities in the slurry can be filtered to effectively ensure the quality of the slurry. Specifically, on the feed channel, the filter 7 is provided between the feed diaphragm pump 33 and the primer box; on the return channel, the filter 7 is provided between the return diaphragm pump and the slurry tank 8. The specific working process is as follows: during feeding, the feed diaphragm pump 33 transports the slurry in the slurry tank 8 to the filter 7, and the slurry is filtered and input into the primer box through the feed pipe 31; during reflux, the reflux diaphragm pump 34 transports the slurry in the primer box to the filter 7, and the slurry is filtered and transported back to the slurry tank 8 to realize the circulation of the slurry.

[0031] The slurry circulation feeding system of the utility model also includes a transport trolley 4, on which the circulation assembly 3 is arranged, that is, the slurry tank 8, the feed diaphragm pump 33, the return diaphragm pump 34 and the filter 7 are fixedly connected to the transport trolley 4. The transport trolley 4 is provided to facilitate the transportation of the slurry tank 8, and the slurry tank 8 and the circulation assembly 3 can be transported to the required position by the transport trolley 4, which saves time and labor and is conducive to improving production efficiency.

[0032] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A primer box, characterized in that: It includes a material box body, a feed inlet is provided at the bottom of the material box body, a guide block is provided on the feed inlet, a reflux step is provided at the bottom of the material box body, a return port is provided on the reflux step, and the return port is located at a height higher than the feed inlet.

2. A primer box according to claim 1, characterized in that: The bottom of the material box body is in a "V"-shaped structure, and a drainage outlet is opened in the middle of the material box body.

3. A primer box according to claim 2, characterized in that: There are two feed inlets, and the two feed inlets are symmetrically arranged at the bottom of the material box body.

4. A primer box according to claim 1, characterized in that: The guide block is in a "concave" shape.

5. A slurry circulation feeding system, characterized in that: The primer box comprises the primer box according to any one of claims 1 to 4, and also comprises a circulation component and a slurry tank, the circulation component comprises a feed pipe, a return pipe, a feed diaphragm pump and a return diaphragm pump, the slurry tank, the feed diaphragm pump, the feed pipe and the feed port are connected in sequence to form a feed channel, the slurry tank, the return diaphragm pump, the discharge pipe and the return port are connected in sequence to form a reflux channel.

6. A slurry circulation feeding system according to claim 5, characterized in that: The circulation component also includes a liquid level sensor arranged on the primer box, and the feed diaphragm pump is connected to a solenoid valve, and the solenoid valve is electrically connected to the liquid level sensor.

7. A slurry circulation feeding system according to claim 5, characterized in that: The working flow rate of the feed diaphragm pump is always greater than the working flow rate of the return diaphragm pump.

8. A slurry circulation feeding system according to claim 5, characterized in that: Also included is an anilox roller disposed above the primer box.

9. A slurry circulation feeding system according to claim 5, characterized in that: Filters are arranged between the slurry tank and the feed pipe and between the slurry tank and the return pipe.

10. A slurry circulation feeding system according to claim 9, characterized in that It also includes a transport trolley, on which the slurry tank, the feed diaphragm pump, the reflux diaphragm pump and the filter are all arranged.

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