A steel ball sieving and slurry discharging device for battery slurry

Abstract

A steel ball sieving and discharging device for battery slurry comprises a slurry tank, a rotating discharging sieve mechanism, a sealing cover, a slurry input pipe and a compressed air inlet pipe. The discharging sieve mechanism comprises a clamping net group, steel balls and a driving shaft. The clamping net group comprises an outer net and an inner net. The outer net and the inner net are respectively provided with corresponding outer net through holes and inner net through holes. Any one of the steel balls can reciprocate along the arrangement direction of the outer net through holes and the inner net through holes. The steel ball sieving and discharging device grinds the battery slurry when the battery slurry is discharged from the gap, and the rotating steel balls also grind the battery slurry again when the battery slurry flows to the bottom of the slurry tank, so that the discharging fineness of the battery slurry flowing to the bottom of the slurry tank is consistent and the mixture is uniform.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mechanical equipment, in particular to a steel ball screening and slurry discharging device for battery slurry. BACKGROUND

[0002] At present, the slurry screening process in the batching workshop of most battery production companies is manually performed by an operator using a 150-200 mesh screening net to screen and discharge slurry to a coating machine for slurry coating. The manual operation of the staff is low in efficiency, affecting the feeding efficiency of the subsequent process. At the same time, the operator needs to manually feed the screening net one spoonful at a time, which inevitably increases the labor intensity of the operator. At the same time, manual screening is slow in discharging speed, and the slurry is exposed to air, which affects the quality of the final product. In addition, the fineness of the manually screened slurry is uneven, and the slurry needs to be stirred from time to time, otherwise it cannot be smoothly screened. Moreover, because the slurry has a large viscosity, the slurry is discharged in a cone shape and sticks to the screen holes, which can cause the slurry to be discharged.

[0003] In the existing screening technology, in addition to the manual screening method, a small part of the automatic screening trolley is also used, which also uses multi-layer filter screens and pressurized extrusion. The automatic screening trolley requires high degree of automation, and the filter screen needs to be replaced frequently. It is difficult to clean the slurry from the inner wall of the trolley, and the cost is high.

[0004] In addition, the new energy power battery industry basically uses standardized lithium battery production equipment, and the control requirements for the consistency and safety of each battery are becoming higher and higher. The upgrading and transformation of the equipment automation is the best solution to solve this dilemma.

[0005] Therefore, providing a device that can automatically screen and discharge battery slurry will be conducive to realizing the entire automation of battery preparation. SUMMARY

[0006] Therefore, the present application provides a steel ball screening and slurry discharging device for battery slurry, which can automatically screen and discharge battery slurry to meet the above requirements.

[0007] A kind of steel ball sieving out pulp device for battery slurry, it includes a slurry tank, a rotating discharge screen mechanism being arranged in the slurry tank, a sealing cover being arranged in the opening end of the slurry tank, a slurry input pipe being inserted in the sealing cover, and a compressed air inlet pipe being inserted in the sealing cover.The discharge screen mechanism includes a clamping net group being inserted in the slurry tank, a plurality of rows of steel balls being arranged on the clamping net group, and a drive shaft driving the clamping net group to rotate.The clamping net group includes an outer net and an inner net being inserted in the outer net.Corresponding outer net through holes and inner net through holes are arranged on the outer net and the inner net respectively.The diameters of the outer net through holes and the inner net through holes are smaller than the diameter of the steel balls to clamp the steel balls between the outer net and the inner net.The outer net is spaced apart from the inner wall of the slurry tank.Any one of the steel balls can reciprocate along the arrangement direction of the outer net through holes and the inner net through holes.The steel balls abut against the inner wall of the slurry tank when the clamping net group rotates to make the steel balls have gaps between the inner net through holes and the outer net through holes.The slurry input pipe is used to input battery slurry, and the compressed air inlet pipe is used to input compressed air.

[0008] Further, a discharge port is arranged at the bottom of the slurry tank, and a valve is arranged on the discharge port.

[0009] Further, the rotating discharge screen mechanism further includes a bottom disc, the outer net and the inner net are both fixed on the bottom disc, and the drive shaft is also fixed on the bottom disc.

[0010] Further, the bottom disc is located at the bottom of the slurry tank and is spaced apart from the bottom of the slurry tank.

[0011] Further, a mechanical seal is arranged between the drive shaft and the sealing cover.

[0012] Further, the compressed air pressure of the compressed air input is arranged between the sealing cover and the liquid surface of the slurry.

[0013] Further, the slurry input pipe extends into the bottom of the clamping net group.

[0014] Compared with the prior art, the steel ball slurry discharge device for battery slurry provided by the present invention utilizes the inner and outer meshes of the rotary discharge screen mechanism, as well as multiple rows of steel balls arranged on the inner and outer meshes. In use, battery slurry is input through the slurry input pipe, and compressed air is input through the compressed air inlet pipe. The drive shaft drives the inner and outer meshes to rotate, thereby causing the multiple rows of steel balls to be thrown outward under centrifugal force. These thrown steel balls abut against the inner wall of the slurry tank. Therefore, when the inner and outer meshes rotate, the steel balls will also rotate. Simultaneously, as the clamping mesh rotates, the steel balls press against the inner wall of the slurry tank, creating gaps between the steel balls and the inner and outer mesh openings. Under centrifugal force and compressed air pressure, the battery slurry is extruded through these gaps and ejected towards the inner wall of the slurry tank. Simultaneously, the slurry flows out as the steel balls rotate. Therefore, the rotating steel balls grind the battery slurry as it is ejected through the gaps. Furthermore, as the slurry flows to the bottom of the tank, the rotating steel balls further grind the flowing slurry, resulting in a consistent fineness and uniform mixing of the slurry reaching the bottom. This automated sieving of the battery slurry is achieved as it flows out from the bottom of the tank. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the working state of a steel ball slurry screening and discharge device for battery slurry provided by the present invention.

[0016] Figure 2 for Figure 1 A cross-sectional schematic diagram of the clamping mesh and chassis of a steel ball slurry screening and discharge device for battery slurry. Detailed Implementation

[0017] The following provides a more detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0018] like Figure 1 The diagram shows a structural schematic of the steel ball sieving and discharging device for battery slurry provided by the present invention. The device includes a slurry tank 10, a rotary discharge screen mechanism 20 disposed within the tank 10, a sealing cap 30 at the open end of the tank 10, a slurry input pipe 40 inserted into the cap 30, and a compressed air inlet pipe 50 inserted into the cap 30. It is conceivable that the device may also include other functional modules, such as a drive motor, assembly components, electrical connection components, etc., which are well-known to those skilled in the art and will not be described in detail here.

[0019] The slurry tank 10 can be made of high-quality steel, and its volume is set according to the implementation requirements. One end of the slurry tank 10 is open, and the other end is provided with a discharge port 11, which is equipped with a valve 12. The discharge port 11 is used to output the sieved battery slurry. The valve 12 itself is prior art; it is used to control the discharge speed of the discharge port 11 to facilitate the coating process of the subsequent coating machine.

[0020] The rotary discharge screen mechanism 20 includes a base 21, a clamping mesh assembly 22 inserted into the slurry tank 10 and fixedly mounted on the base 21, multiple rows of steel balls 23 arranged on the clamping mesh assembly 22, and a drive shaft 24 for driving the clamping mesh assembly 22 to rotate. The base 21, used to house the clamping mesh assembly 22 and the drive shaft 24, should be a solid structure, meaning the battery slurry will not flow out of the base 21. The clamping mesh assembly 22 includes an outer mesh 221 fixedly mounted on the base 21, an inner mesh 222 fixedly mounted on the base 21 and inserted into the outer mesh 221, and multiple rows of inner mesh through holes 224 and outer mesh through holes 225 arranged on the side walls of the inner mesh 222 and outer mesh 221. Figure 2 The diagram shown is a cross-sectional view of the clamping mesh assembly 22 and the chassis 21. Due to limitations in drawing, this diagram only illustrates the structure of the clamping mesh assembly 22 and the chassis 21 and does not represent the actual object. The inner mesh 222 and the outer mesh 222 are spaced apart to clamp multiple steel balls 23. Therefore, the distance between the inner mesh 222 and the outer mesh 221 is smaller than the diameter of the steel ball 23, allowing the steel ball 23 to extend beyond the outer wall of the outer mesh 221. Consequently, the diameters of the inner mesh through-hole 224 and the outer mesh through-hole 225 are smaller than the diameter of the steel ball 23. To ensure that the diameters of the inner mesh through-hole 224 and the outer mesh through-hole 225 allow battery slurry to flow out, any one of the steel balls 23 can reciprocate along the arrangement direction of the outer mesh through-hole 225 and the inner mesh through-hole 224.

[0021] When the drive shaft 24 drives the chassis 21 to rotate, it causes the inner mesh 222 and outer mesh 221 to rotate as well. Under centrifugal force, the steel balls 23 are thrown towards the inner wall of the slurry tank 10. However, in this invention, the thrown steel balls 23 should abut against the inner wall of the slurry tank 10, the function of which will be explained below. Simultaneously, when the steel balls 23 abut against the inner wall of the slurry tank 10 under centrifugal force, since any one of the steel balls 23 can reciprocate along the arrangement direction of the outer mesh through-hole 225 and the inner mesh through-hole 224, there is a certain gap between the steel balls 23 and the inner mesh through-hole 224 and the outer mesh through-hole 225. This gap facilitates the ejection of the battery slurry.

[0022] When the steel balls 23 are spun out under the centrifugal force, they abut against the inner side wall of the slurry tank 10, and when the clamping net group 22 continues to rotate, the steel balls 23 rotate under the friction with the inner side wall of the slurry tank 10.

[0023] Therefore, when the driving shaft 24 drives the inner net 222 and the outer net 221 to rotate, the battery slurry will be shot out from the gap between the steel balls 23 and the inner net through hole 224 and the outer net through hole 225 under the centrifugal force and the pressure of the compressed gas, and at the same time, a certain amount of battery slurry will be adhered to the steel balls 23, which will flow out along the outer side wall of the outer net 221 while rotating. The size of the gap and the adhesion of the steel balls 23 play a sieving role.

[0024] Of course, since the steel balls 23 are rotating, the steel balls 23 and the side walls of the inner net through hole 224 and the outer net through hole 225 will grind the battery slurry during the flow-out process, so that the discharge fineness of the battery slurry is consistent. At the same time, under the action of centrifugal force, the battery slurry shot to the inner side wall of the slurry tank 10 will be further ground by the rotating steel balls 23, thereby further making the discharge fineness of the battery slurry consistent.

[0025] The sieved battery slurry flows to the bottom of the slurry tank 10, and the battery slurry is stored at the bottom of the slurry tank 10, so the bottom disc 21 is located at the bottom of the slurry tank 10 and is spaced apart from the bottom of the slurry tank 10.

[0026] The driving shaft 24 is arranged on the sealing cover 30, and in order to avoid the battery slurry being spun out under the centrifugal force, a mechanical seal is arranged between the driving shaft 24 and the sealing cover 30. The mechanical seal itself is a prior art, which will not be described here.

[0027] It is conceivable that a driving device, such as a motor, is connected to the driving shaft 24 to drive the driving shaft 24 to rotate. The driving device itself is a prior art, which will not be described here.

[0028] The sealing cover 30 is arranged on the open end of the slurry tank 10, and the arrangement method of the sealing cover 30 should be a prior art, such as arranging a step and a sealing strip on the slurry tank 10, screwing the sealing cover 30 on the side wall of the slurry tank 10 and pressing it on the sealing strip, so as to achieve the purpose of sealing connection.

[0029] The slurry input pipe 40 penetrates through the sealing cover 30 and enters the bottom of the clamping net group 22. The input of the slurry from the bottom of the clamping net group is beneficial to rising upward under the centrifugal force, which is beneficial to the smoothness of the battery slurry.

[0030] The compressed air pressure inputted by the compressed air inlet pipe 50 is set between the sealing cover 30 and the liquid surface of the slurry, so as to provide a certain pressure for the battery slurry, which is beneficial to the battery slurry to be thrown out from the gap between the steel balls 23 and the inner mesh through hole 224 and the outer mesh through hole 225.

[0031] Compared with the prior art, the steel ball sieving out slurry device for battery slurry provided by the present application utilizes the inner mesh 222 and the outer mesh 221 of the rotating discharging screen mechanism 20 and the multiple rows of steel balls 23 arranged on the inner mesh 222 and the outer mesh 221. In use, the slurry input pipe 40 inputs the battery slurry, and then the compressed air inlet pipe 50 inputs the compressed air, and the driving shaft 24 drives the inner mesh 222 and the outer mesh 221 to rotate, so that the multiple rows of steel balls 23 are thrown out outward under the centrifugal force, and the thrown-out steel balls 23 abut against the inner side wall of the slurry tank 10, so that the steel balls 23 also rotate when the inner mesh 222 and the outer mesh 221 rotate. At the same time, when the clamping mesh group 22 rotates, the steel balls 23 abut against the inner wall of the slurry tank 10 to make the steel balls 23 and the inner mesh through hole 224 and the outer mesh through hole 225 exist gaps, and the battery slurry is extruded from the gaps under the centrifugal force and the pressure of the compressed air and is shot to the inner side wall of the slurry tank 10, and the slurry also flows out with the rotation of the steel balls 23. Therefore, the rotating steel balls 23 grind the battery slurry when the battery slurry is shot from the gaps, and the rotating steel balls 23 also grind the flowing-down slurry again in the process that the battery slurry flows to the bottom of the slurry tank 10, so that the discharging fineness of the battery slurry flowing to the bottom of the slurry tank 10 is consistent and the mixture is uniform. At the same time, the sieving of the battery slurry is realized automatically as the battery slurry flows out from the bottom of the slurry tank.

[0032] The above is only the preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement or improvement within the spirit of the present application is covered in the claim scope of the present application.

Claims

1. A steel ball sieving and slurry discharge device for battery slurry, characterized in that: The steel ball slurry slurry discharge device for battery slurry includes a slurry tank, a rotary discharge screen mechanism disposed in the slurry tank, a sealing cap disposed at the open end of the slurry tank, a slurry input pipe inserted into the sealing cap, and a compressed air inlet pipe inserted into the sealing cap. The discharge screen mechanism includes a clamping mesh assembly inserted in the slurry tank, multiple rows of steel balls disposed on the clamping mesh assembly, and a drive shaft for driving the clamping mesh assembly to rotate. The clamping mesh assembly includes an outer mesh and an inner mesh inserted into the outer mesh. The outer mesh and the inner mesh... The mesh is provided with corresponding outer mesh through holes and inner mesh through holes. The diameter of the outer mesh through holes and inner mesh through holes is smaller than the diameter of the steel ball to clamp the steel ball between the outer mesh and the inner mesh. The outer mesh is spaced apart from the inner wall of the slurry tank. Any one of the steel balls can reciprocate along the arrangement direction of the outer mesh through holes and inner mesh through holes. When the clamping mesh group rotates, the steel ball abuts against the inner wall of the slurry tank so that there are gaps between the steel ball and the inner mesh through holes and the outer mesh through holes respectively. The slurry input pipe is used to input battery slurry, and the compressed air inlet pipe is used to input compressed air.

2. The steel ball slurry screening and discharge device for battery slurry as described in claim 1, characterized in that: The bottom of the slurry tank is provided with a discharge port, and a valve is provided on the discharge port.

3. The steel ball slurry screening and discharge device for battery slurry as described in claim 1, characterized in that: The rotary discharge screen mechanism also includes a chassis, on which both the outer and inner screens are fixedly mounted, and the drive shaft is also fixedly mounted.

4. The steel ball slurry screening and discharge device for battery slurry as described in claim 3, characterized in that: The chassis is located at the bottom of the slurry tank and is spaced apart from the bottom of the slurry tank.

5. The steel ball slurry screening and discharge device for battery slurry as described in claim 3, characterized in that: A mechanical seal is provided between the drive shaft and the sealing cover.

6. The steel ball slurry screening and discharge device for battery slurry as described in claim 1, characterized in that: The compressed air entering the system is positioned between the sealing cap and the liquid surface of the slurry.

7. The steel ball slurry screening and discharge device for battery slurry as described in claim 1, characterized in that: The slurry input pipe extends into the bottom of the clamping mesh assembly.

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