Stirring device for battery positive electrode powder

Abstract

The utility model discloses a battery positive electrode powder stirring device which comprises a stirring tank body, the lower part of the stirring tank body is mounted on a mounting rack, a rotatable stirring shaft is vertically arranged in the middle of the interior of the stirring tank body, and the top end of the stirring shaft is connected to the output end of a rotating motor; spiral blades are arranged on the surface of the stirring shaft from top to bottom, and the stirring shaft is sleeved with a mixing shaft sleeve; a feeding hopper is arranged on the mounting rack, a feeding barrel communicated with the interior of the feeding hopper is formed at the bottom end of the feeding hopper and communicated with the side wall of the bottom material bin, a discharging opening communicated with the interior of the stirring tank is formed in the side wall of the lower portion of the stirring tank, and the tail end of the discharging opening faces the interior of the feeding hopper downwards. Powder in the bottom material bin is stirred through the spiral blade on the stirring shaft, and the stirred powder is continuously pushed to the top end of the material mixing shaft sleeve, then flies into the stirring tank body in an umbrella shape, falls down along the inner wall of the stirring tank body and enters the feeding hopper again through the discharging port, and the stirring and mixing are circularly performed until the powder is uniformly mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production and manufacturing, in particular to a stirring device for battery positive electrode powder. Background Art

[0002] A dry cell is a voltaic cell that uses an absorbent to make the contents into a paste that does not spill out. It is often used as a power source for flashlights, radios, etc. In the preparation of dry cells, it is usually necessary to first make electrode powder, then press the formed positive electrode ring into the battery shell, apply a conductive film layer to the inner wall of the battery shell, then dry it, inject electrode powder, and inject electrolyte.

[0003] During the production and processing of electrode powder, the positive electrode powder of the battery needs to be stirred evenly. The more evenly it is stirred, the better the performance of the electrode. The current electrode powder stirring and processing equipment, China Patent Publication No. CN212576149U, proposes an efficient and environmentally friendly powder mixing device for dry battery positive electrode materials. The positive electrode powder is put into a mixing drum for stirring. Because the mixing drum is a closed structure, a large amount of dust will not be generated during the stirring process, which is more environmentally friendly; because the wall of the mixing drum is arc-shaped, the positive electrode powder stirred to both ends of the mixing drum will automatically accumulate toward the middle of the mixing drum, which is easier to stir and improves the stirring efficiency. However, the stirring structure design of the device is relatively simple, which may lead to insufficient stirring of the material during actual operation, and the powder cannot be effectively stirred evenly, which will affect the quality of the subsequent battery production. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a stirring device for battery positive electrode powder, which has a good stirring effect.

[0005] In order to achieve the above purpose, the utility model adopts the following contents:

[0006] The utility model provides a stirring device for battery positive electrode powder, comprising a stirring tank body, the lower part of which is mounted on a mounting frame, a rotatable stirring shaft is vertically arranged in the middle of the interior of the stirring tank body, the top of the stirring tank body is provided with a top cover, the bottom end of the stirring tank body vertically extends downward to form a bottom material bin communicated with the interior thereof, the upper end and the lower end of the stirring shaft are rotatably connected to the top cover and the bottom of the bottom material bin through a bearing member, and the top end of the stirring shaft passes through the top cover and is connected to the output end of a rotating motor, the rotating motor is fixedly arranged on the surface of the top cover; spiral blades are arranged on the surface of the stirring shaft from top to bottom, the outer sleeve of the stirring shaft is provided with a mixing shaft sleeve, and the upper and lower ends of the mixing shaft sleeve are open; a feeding hopper is arranged on the mounting frame, a feeding barrel communicated with the interior thereof is formed at the bottom end of the feeding hopper, the feeding barrel is connected to the side wall of the bottom material bin, a discharge port communicated with the interior thereof is formed on the lower side wall of the stirring tank body, and the end of the discharge port is downwardly directed toward the interior of the feeding hopper.

[0007] According to a battery positive electrode powder stirring device provided by the utility model, a feed shaft is rotatably arranged in the feed barrel, the end of the feed shaft is connected to a stirring motor outwardly, the stirring motor is fixed on the feed barrel, and the surface of the feed shaft is provided with a spiral stirring blade. With such a design, the stirring motor drives the feed shaft to rotate, so that the spiral stirring blade on the feed shaft rotates circumferentially, thereby feeding the powder in the feed hopper into the bottom material bin, improving the efficiency of the circulating feeding.

[0008] According to a stirring device for battery positive electrode powder provided by the utility model, a spacer is provided on the outer side of the middle part of the mixing sleeve, a spacing is left between the spacer and the mixing sleeve, the upper end of the spacer is sealed and connected to the outer wall of the mixing sleeve, the lower end of the spacer is formed with a bell mouth and is not connected to the outer wall of the mixing sleeve, a hot air pipe is connected to the outer wall of the spacer, and the hot air pipe is connected to a hot air blower after passing through the side wall of the stirring tank body. With such a design, hot air is blown into the space between the spacer and the mixing sleeve by the hot air blower, thereby achieving a heating effect on the stirred powder in the air inside the mixing sleeve, and facilitating the upward reflux of the powder, that is, making the powder float upward along the extension direction of the mixing sleeve.

[0009] Based on the above solution, the spacer sleeve and the mixing sleeve are both made of aluminum alloy in one piece. Aluminum alloy is durable, easy to process, and has good heat transfer properties, which facilitates and quickly heats the air inside the mixing sleeve.

[0010] According to the stirring device for battery positive electrode powder provided by the utility model, the outer wall of the mixing shaft sleeve is provided with a fixing ring on the upper and lower sides, and four screws are provided on the fixing ring. The ends of the screws penetrate the side wall of the mixing tank body and are connected with a locking nut. Through the cooperation of the fixing ring, the screws and the locking nut, the installation of the mixing shaft sleeve can be quickly realized, and the subsequent disassembly and replacement can also be facilitated.

[0011] Compared with the prior art, the utility model has the advantages of simple structure and convenient use. First, a variety of powders are poured into the feed hopper together, and these powders fall into the bottom material bin at the bottom of the mixing tank along the feed tube. The rotary motor is started to drive the stirring shaft to rotate at high speed. Under the rotation of the stirring shaft, the spiral blades rotate at a certain speed and direction, so that it produces local shear and flow effects, thereby stirring the powder in the bottom material bin and continuously pushing the stirred powder to the top of the mixing shaft sleeve. After being lifted up to the top of the mixing shaft sleeve, it will be thrown into the inside of the mixing tank in an umbrella shape, fall along the inner wall of the mixing tank, and then re-enter the feed hopper through the discharge port. The stirring and mixing are circulated until the mixture is uniform, and a good stirring effect is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0013] Figure 1 It is a schematic cross-sectional structure diagram of a stirring device for battery positive electrode powder according to an embodiment of the utility model;

[0014] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0015] Figure 3 This is a schematic diagram of the structure of the fixing ring on the mixing sleeve according to the embodiment of the utility model;

[0016] 1-installation frame, 2-mixing tank body, 3-mixing shaft, 4-mixing shaft sleeve, 5-feed hopper, 6-feed barrel, 7-feed shaft, 8-spacer, 21-top cover, 22-bottom silo, 23-bearing, 24-discharge port, 31-rotating motor, 32-spiral blade, 41-fixing ring, 42-screw, 43-locking nut, 71-mixing motor, 72-spiral mixing blade, 81-bell mouth, 82-hot air pipe, 83-hot air blower. DETAILED DESCRIPTION

[0017] In order to explain the present invention more clearly, the present invention is further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the following specific description is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0019] See also Figures 1 to 3 The embodiment of the utility model provides a stirring device for battery positive electrode powder, comprising a stirring tank body 1, the lower part of which is mounted on a mounting frame 2, and the mounting frame 2 supports the stirring tank body 1.

[0020] A rotatable stirring shaft 3 is vertically arranged in the middle of the interior of the stirring tank body 2, and a top cover 21 is provided on the top of the stirring tank body 2. The bottom end of the stirring tank body 2 extends vertically downward to form a bottom material bin 22 communicated with the interior thereof. The upper and lower ends of the stirring shaft 3 are rotatably connected to the top cover 21 and the bottom of the bottom material bin 22 through a bearing member 23, and the top end of the stirring shaft 3 passes through the top cover 21 and is connected to the output end of a rotating motor 31. The rotating motor 31 is fixedly mounted on the surface of the top cover 21, and the stirring shaft is driven to rotate by the rotating motor.

[0021] The surface of the stirring shaft 3 is provided with spiral blades 32 from top to bottom. The spiral blades 32 are arranged to rotate around the stirring shaft 3 . The outer sleeve of the stirring shaft 3 is provided with a mixing shaft sleeve 4 . There is a gap between the mixing shaft sleeve 4 and the spiral blades 32 .

[0022] A feed hopper 5 is arranged on the mounting frame 1, and a feed barrel 6 communicating with the interior of the feed hopper 5 is formed at the bottom end thereof, and the feed barrel 6 is connected to the side wall of the bottom material bin 22, and a discharge port 24 communicating with the interior is formed on the lower side wall of the mixing tank body 2, and the end of the discharge port 24 is downwardly directed toward the interior of the feed hopper 5. That is, the material inside the feed hopper will flow into the bottom material bin through the feed barrel.

[0023] When in use: first, pour a variety of powders into the feed hopper 5 together, and these powders fall into the bottom material bin 22 at the bottom end of the stirring tank body 2 along the feed tube 6, start the rotating motor 31, drive the stirring shaft 3 to rotate at a high speed, and under the rotation of the stirring shaft 3, the spiral blade 32 rotates at a certain speed and direction, so that it produces local shearing and flow effects, thereby stirring the powder in the bottom material bin 22 and continuously pushing the stirred powder to the top of the mixing shaft sleeve 4, lifting it upward to reach the top of the mixing shaft sleeve 4, and then flying into the stirring tank body 2 in an umbrella shape, falling along the inner wall of the stirring tank body 2 and re-entering the feed hopper 5 through the discharge port 24, and the stirring and mixing are circulated until the mixture is uniform.

[0024] In this embodiment, a feed shaft 7 is rotatably disposed in the feed barrel 6, and the end of the feed shaft 7 is connected to a stirring motor 71 outwardly, and the stirring motor 71 is fixed on the feed barrel 6. The surface of the feed shaft 7 is provided with a spiral stirring blade 72. In this design, the stirring motor drives the feed shaft to rotate, so that the spiral stirring blade on the feed shaft rotates circumferentially, thereby continuously feeding the powder in the feed hopper into the bottom material bin in a stirring posture, thereby improving the efficiency of the circulating feeding.

[0025] In this embodiment, a spacer 8 is sleeved on the outer side of the middle part of the mixing sleeve 4, and a gap is left between the spacer 8 and the mixing sleeve 4. The upper end of the spacer 8 is sealed and connected to the outer wall of the mixing sleeve 4. The lower end of the spacer 8 is formed with a bell mouth 81 and is not connected to the outer wall of the mixing sleeve 4. A hot air pipe 82 is connected to the outer wall of the spacer 8, and the hot air pipe 82 penetrates the side wall of the mixing tank body 2 and is connected to a hot air blower 83. With such a design, hot air is blown into the space between the spacer and the mixing sleeve by the hot air blower, thereby achieving the heating effect of the stirred powder in the air inside the mixing sleeve, and facilitating the upward reflux of the powder, that is, making the powder float upward along the extension direction of the mixing sleeve.

[0026] The spacer sleeve 8 and the mixing sleeve 4 are both made of aluminum alloy in one piece. Aluminum alloy is durable, easy to process, and has good heat transfer properties, which facilitates and quickly heats the air inside the mixing sleeve.

[0027] In this embodiment, a fixing ring 41 is provided on the upper and lower outer walls of the mixing shaft sleeve 4, and four screws 42 are provided on the fixing ring 41. The four screws 42 are arranged in a circumferential array, and the ends of the screws 42 penetrate the side wall of the mixing tank body 2 and are connected to a locking nut 43. Through the cooperation of the fixing ring, the screws, and the locking nut, the installation of the mixing shaft sleeve can be quickly realized, and the subsequent disassembly and replacement can also be convenient.

[0028] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A stirring device for battery positive electrode powder, characterized in that: The invention comprises a stirring tank body, the lower part of which is mounted on a mounting frame, a rotatable stirring shaft is vertically arranged in the middle of the interior of the stirring tank body, the top of the stirring tank body is provided with a top cover, the bottom end of the stirring tank body vertically extends downward to form a bottom material bin communicated with the interior thereof, the upper and lower ends of the stirring shaft are rotatably connected to the top cover and the bottom of the bottom material bin through a bearing member, and the top end of the stirring shaft passes through the top cover and is connected to the output end of a rotating motor, and the rotating motor is fixedly arranged on the surface of the top cover; spiral blades are arranged on the surface of the stirring shaft from top to bottom, and a mixing shaft sleeve is arranged on the outer sleeve of the stirring shaft; a feeding hopper is arranged on the mounting frame, a feeding barrel communicated with the interior thereof is formed at the bottom end of the feeding hopper, the feeding barrel is connected to the side wall of the bottom material bin, a discharge port communicated with the interior thereof is formed on the lower side wall of the stirring tank body, and the end of the discharge port is downwardly facing the interior of the feeding hopper.

2. A stirring device for battery positive electrode powder according to claim 1, characterized in that: A feed shaft is rotatably arranged in the feed barrel, and the end of the feed shaft is outwardly connected to a stirring motor, the stirring motor is fixed on the feed barrel, and the surface of the feed shaft is provided with spiral stirring blades.

3. The stirring device for battery positive electrode powder according to claim 1, characterized in that: A spacer is provided on the outer side of the middle part of the mixing sleeve, and a gap is left between the spacer and the mixing sleeve. The upper end of the spacer is sealed and connected to the outer wall of the mixing sleeve, and the lower end of the spacer is formed with a bell mouth and is not connected to the outer wall of the mixing sleeve. A hot air pipe is connected to the outer wall of the spacer, and the hot air pipe passes through the side wall of the mixing tank body outward and is connected to a hot air blower.

4. A stirring device for battery positive electrode powder according to claim 3, characterized in that: The spacer sleeve and the mixing shaft sleeve are both made of aluminum alloy in one piece.

5. The stirring device for battery positive electrode powder according to claim 1, characterized in that: The outer wall of the mixing shaft sleeve is provided with a fixing ring on the upper and lower sides, and four screw rods are provided on the fixing ring. The ends of the screw rods penetrate the side wall of the mixing tank body and are connected with a locking nut.

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