Crushing and screening machine applied to lithium battery positive electrode material metal powder

Abstract

The utility model provides a smashing and screening machine applied to lithium battery positive electrode material metal powder. The smashing and screening machine comprises a box body, a feeding opening is formed in the top of the box body, symmetrically-distributed bottom plates are fixedly arranged in the box body, guide sleeves are fixedly connected to the tops of the bottom plates, connecting rods are slidably connected into the guide sleeves, and mounting plates are fixedly connected to the tops of the two connecting rods; a filtering sieve plate is fixedly connected between the two mounting plates, tension springs arranged outside the guide sleeves in a sleeving mode are fixedly connected between the bottom plate and the mounting plates, a fixing block is arranged in the box body, a first motor is mounted at the bottom of the fixing block, and the output end of the first motor is fixedly connected with a connecting shaft movably penetrating through the fixing block; l-shaped rods which are symmetrically distributed are fixedly connected to the outer wall of the connecting shaft, and pulleys are mounted at the tops of the two L-shaped rods; the filtering sieve plate can move up and down in a reciprocating mode, blockage of the filtering sieve plate caused by concentrated accumulation of metal materials on the top of the filtering sieve plate is prevented, and the passing rate of metal powder obtained after smashing treatment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production and processing, and in particular to a crushing and screening machine used for metal powder of lithium battery positive electrode materials. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. With the development of science and technology, lithium batteries have become mainstream. Among them, the positive electrode materials of lithium batteries can be made of metal powders such as lithium cobalt oxide, lithium manganese oxide, and iron phosphate. During the production process of lithium batteries, the positive electrode materials of lithium batteries need to be crushed and can only be used after being crushed to a certain degree. However, the existing technology has the following shortcomings when used:

[0003] After the lithium battery is crushed, smaller metal powders are discharged downward through the mesh holes on the filter screen plate, and large particles of metal materials are intercepted by the filter screen plate and placed on the top of the filter screen plate. After a long period of crushing the material, the amount of metal material falling on the filter screen plate continues to increase, which can easily cause the filter screen to be blocked and affect the pass rate of the metal powder.

[0004] Therefore, there is an urgent need for a crushing and screening machine for metal powder used in lithium battery positive electrode materials to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to address the current problem that after the lithium battery is crushed, smaller metal powders are discharged downward through the mesh holes on the filter screen plate, and large particles of metal materials are intercepted by the filter screen plate and placed on the top of the filter screen plate. After the material is crushed for a long time, the amount of metal material falling on the filter screen plate continues to increase, which easily leads to clogging of the filter screen and affects the passing rate of the metal powder.

[0006] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0007] A crushing and screening machine used for metal powder of lithium battery positive electrode material is used to improve the above problems.

[0008] The specific application is as follows:

[0009] A crushing and screening machine for metal powder of positive electrode material of lithium battery, comprising a box body, a feeding port is opened on the top of the box body, a symmetrically distributed bottom plate is fixedly arranged in the box body, a guide sleeve is fixedly connected to the top of the bottom plate, a connecting rod is slidably connected in the guide sleeve, two connecting rods are fixedly connected to the top of the mounting plates, a filter screen plate is fixedly connected between the two mounting plates, a tension spring sleeved outside the guide sleeve is fixedly connected between the bottom plate and the mounting plate, a fixed block is arranged in the box body, a first motor is installed at the bottom of the fixed block, a connecting shaft that movably passes through the fixed block is fixedly connected to the output end of the first motor, a symmetrically distributed L-shaped rod is fixedly connected to the outer wall of the connecting shaft, pulleys are installed on the top of the two L-shaped rods, a hemispherical block symmetrically distributed about the connecting axis is fixedly connected to the bottom of the filter screen plate, four fixing rods are fixedly connected between the outer wall of the fixed block and the inner wall of the box body, a first crushing mechanism and a second crushing mechanism are arranged in the box body,

[0010] As a preferred technical solution of the present application, the first crushing mechanism includes a second motor installed on the back of the box, the output end of the second motor is fixedly connected to the first crushing roller placed in the box, and the back of the first crushing roller is rotatably connected to the inner wall of the box.

[0011] As a preferred technical solution of the present application, the second crushing mechanism includes a third motor installed on the back of the box, the output end of the third motor is fixedly connected to a second crushing roller placed in the box, and the back of the second crushing roller is rotatably connected to the inner wall of the box.

[0012] As a preferred technical solution of the present application, an openable door is provided on the front of the box.

[0013] As a preferred technical solution of the present application, the inner wall of the box is fixedly connected with symmetrically distributed first material guide plates.

[0014] As a preferred technical solution of the present application, a second material guide plate is fixedly connected to the top of the two mounting plates.

[0015] As a preferred technical solution of the present application, an arc-shaped plate is arranged on the top of the filter screen plate, and an opening is opened at the bottom of the box body.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] In the scheme of this application:

[0018] 1. By starting the first motor, the first motor drives the two L-shaped rods to rotate through the connecting shaft, and the two pulleys follow the two L-shaped rods to make circular motions respectively. The pulleys roll and contact with the bottom of the filter screen plate. The outer surface of the hemispherical block is a spherical protrusion. When the pulley rolls through the hemispherical block, the filter screen plate and the two mounting plates will move up and down, and the mounting plates are driven by the tension of the tension spring, so that the bottom of the filter screen plate is always in contact with the pulley. When the filter screen plate moves up and down, the connecting rod slides in the guide sleeve to prevent the position of the filter screen plate from shifting. As the first motor continuously drives the filter screen plate through the connecting shaft, the filter screen plate moves up and down. The movable L-shaped rod rotates, causing the filter screen plate to move up and down in a reciprocating manner, preventing the metal material on the top of the filter screen plate from accumulating and causing the filter screen plate to be blocked, thereby ensuring the pass rate of the metal powder after the crushing process. This solves the problem in the prior art that after the lithium battery is crushed, smaller metal powders are discharged downward through the mesh holes on the filter screen plate, and large particles of metal materials are intercepted by the filter screen plate and placed on the top of the filter screen plate. After the material is crushed for a long time, the amount of metal material falling on the filter screen plate continues to increase, which easily leads to the clogging of the filter screen and affects the pass rate of the metal powder.

[0019] 2. By setting up the second material guide plate, the crushed metal material falls on the filter screen plate, and the material will not fall on the mounting plate and accumulate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the overall structure of a crushing and screening machine for metal powder of lithium battery positive electrode materials provided in this application.

[0021] Figure 2 A schematic diagram of the top view of a crushing and screening machine for lithium battery positive electrode material metal powder provided in the present application.

[0022] Figure 3 This is a schematic diagram of the front cross-sectional structure of a crushing and screening machine for lithium battery positive electrode material metal powder provided in the present application.

[0023] Figure 4 This is a schematic diagram of the overall cross-sectional structure of a crushing and screening machine for lithium battery positive electrode material metal powder provided in the present application.

[0024] Figure 5 A schematic diagram of the side cross-sectional structure of a crushing and screening machine for lithium battery positive electrode material metal powder provided in the present application.

[0025] Indicated in the figure:

[0026] 1. Box body; 2. Feed inlet; 3. Bottom plate; 4. Guide sleeve; 5. Connecting rod; 6. Mounting plate; 7. Filter screen plate; 8. Tension spring; 9. Fixed block; 10. First motor; 11. Connecting shaft; 12. L-shaped rod; 13. Pulley; 14. Hemispherical block; 15. Fixed rod; 16. First crushing mechanism; 17. Second crushing mechanism; 18. Second motor; 19. First crushing roller; 20. Third motor; 21. Second crushing roller; 22. Box door; 23. First guide plate; 24. Second guide plate; 25. Arc plate; 26. Opening. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments.

[0028] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "upper", "lower", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] Example:

[0033] like Figure 1-5As shown, a pulverizing and screening machine for metal powder of positive electrode material of lithium battery proposed in this embodiment includes a box body 1, a feeding port 2 is opened on the top of the box body 1, a symmetrically distributed bottom plate 3 is fixedly provided in the box body 1, a guide sleeve 4 is fixedly connected to the top of the bottom plate 3, a connecting rod 5 is slidably connected in the guide sleeve 4, two connecting rods 5 are fixedly connected to the top of the mounting plates 6, a filter screen plate 7 is fixedly connected between the two mounting plates 6, a tension spring 8 sleeved on the outside of the guide sleeve 4 is fixedly connected between the bottom plate 3 and the mounting plate 6, a fixed block 9 is arranged in the box body 1, a first motor 10 is installed at the bottom of the fixed block 9, the first motor 10 is started, a connecting shaft 11 that movably penetrates the fixed block 9 is fixedly connected to the output end of the first motor 10, and symmetrically distributed L-shaped rods 12 are fixedly connected to the outer wall of the connecting shaft 11, the first motor 10 drives the two L-shaped rods 12 to rotate through the connecting shaft 11, and pulleys 13 are installed on the top of the two L-shaped rods 12, and the two pulleys 13 respectively follow the two L-shaped rods 12 to make circular motion , the pulley 13 is in rolling contact with the bottom of the filter screen plate 7, and the bottom of the filter screen plate 7 is fixedly connected with a hemispherical block 14 symmetrically distributed about the connecting shaft 11. The outer surface of the hemispherical block 14 is a spherical protrusion. When the pulley 13 rolls over the outer surface of the hemispherical block 14, the filter screen plate 7 and the two mounting plates 6 will move up and down. Four fixing rods 15 are fixedly connected between the outer wall of the fixed block 9 and the inner wall of the box body 1. The mounting plate 6 is driven by the tension of the tension spring 8, so that the bottom of the filter screen plate 7 is always in contact with the pulley 13. When the filter screen plate 7 moves up and down, the connecting rod 5 slides in the guide sleeve 4 to prevent the position of the filter screen plate 7 from shifting. A first crushing mechanism 16 and a second crushing mechanism 17 are provided in the box body 1. As the first motor 10 continuously drives the L-shaped rod 12 to rotate through the connecting shaft 11, the filter screen plate 7 is reciprocated up and down to prevent the metal material on the top of the filter screen plate 7 from being concentrated and clogging the filter screen plate 7, thereby ensuring the passing rate of the metal powder after crushing.

[0034] like Figure 2 and Figure 3 As shown, the first crushing mechanism 16 includes a second motor 18 installed on the back of the box body 1, and the output end of the second motor 18 is fixedly connected to the first crushing roller 19 placed in the box body 1. The back of the first crushing roller 19 is rotatably connected to the inner wall of the box body 1. When the second motor 18 is started, the second motor 18 drives the first crushing roller 19 to rotate.

[0035] like Figure 2 and Figure 3As shown, the second crushing mechanism 17 includes a third motor 20 installed on the back of the box body 1, and the output end of the third motor 20 is fixedly connected to the second crushing roller 21 placed in the box body 1. The back of the second crushing roller 21 is rotatably connected to the inner wall of the box body 1. When the third motor 20 is started, the third motor 20 drives the second crushing roller 21 to rotate. The rotation direction of the second crushing roller 21 is opposite to that of the first crushing roller 19, and the metal material is crushed by the rotating first crushing roller 19 and second crushing roller 21.

[0036] like Figure 1 As shown, an openable door 22 is provided on the front of the box body 1. After the crushing process is completed, the staff opens the door 22 and takes out the material particles on the filter screen plate 7 to facilitate secondary crushing thereof.

[0037] like Figure 3 As shown, the inner wall of the box body 1 is fixedly connected with symmetrically distributed first material guide plates 23, so that the metal material entering the box body 1 is placed between the first crushing roller 19 and the second crushing roller 21, which is convenient for crushing the material.

[0038] like Figure 4 As shown, the tops of the two mounting plates 6 are fixedly connected with second material guide plates 24 , so that the crushed metal material falls on the filter screen plate 7 , and the material will not fall on the mounting plates 6 and accumulate.

[0039] like Figure 3 As shown, an arc plate 25 is arranged on the top of the filter screen plate 7, and an opening 26 is opened at the bottom of the box body 1, and the crushed metal powder is discharged out of the box body 1 through the opening 26.

[0040] Specifically, when the pulverizing and screening machine for metal powder of positive electrode material of lithium battery is used: the first motor 10, the second motor 18 and the third motor 20 are all connected to the external control power supply, the first motor 10, the second motor 18 and the third motor 20 are started, and the metal material to be pulverized is put into the box body 1 through the feed port 2, the second motor 18 drives the first pulverizing roller 19 to rotate, and the third motor 20 drives the second pulverizing roller 21 to rotate, and the second pulverizing roller 21 rotates in the opposite direction to the first pulverizing roller 19, and the metal material is pulverized by the rotating first pulverizing roller 19 and the second pulverizing roller 21, and the material particles that are not pulverized to the standard fall on the filter screen plate 7, and the metal powder slides downward through the mesh holes on the filter screen plate 7, and is finally discharged from the box body 1 through the opening 26, and the first motor 10 drives the two motors 18 through the connecting shaft 11 The two L-shaped rods 12 rotate, and the two pulleys 13 follow the two L-shaped rods 12 to make circular motion respectively. The pulley 13 rolls and contacts with the bottom of the filter screen plate 7. The outer surface of the hemispherical block 14 is a spherical protrusion. When the pulley 13 rolls over the outer surface of the hemispherical block 14, the filter screen plate 7 and the two mounting plates 6 will move up and down, and the mounting plate 6 is driven by the tension of the tension spring 8, so that the bottom of the filter screen plate 7 is always in contact with the pulley 13. When the filter screen plate 7 moves up and down, the connecting rod 5 slides in the guide sleeve 4 to prevent the position of the filter screen plate 7 from shifting. As the first motor 10 continuously drives the L-shaped rod 12 to rotate through the connecting shaft 11, the filter screen plate 7 moves up and down reciprocatingly, preventing the metal material on the top of the filter screen plate 7 from accumulating and clogging the filter screen plate 7, thereby ensuring the pass rate of the metal powder after crushing.

[0041] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A crushing and screening machine for metal powder of lithium battery positive electrode material, comprising a housing (1), characterized in that: A feed port (2) is provided at the top of the box body (1), a symmetrically distributed bottom plate (3) is fixedly provided inside the box body (1), a guide sleeve (4) is fixedly connected to the top of the bottom plate (3), a connecting rod (5) is slidably connected inside the guide sleeve (4), a mounting plate (6) is fixedly connected to the top of two connecting rods (5), a filter screen plate (7) is fixedly connected between the two mounting plates (6), a tension spring (8) sleeved on the outside of the guide sleeve (4) is fixedly connected between the bottom plate (3) and the mounting plate (6), a fixing block (9) is provided inside the box body (1), and a first fixing block (9) is installed at the bottom of the fixing block (9) A motor (10), wherein the output end of the first motor (10) is fixedly connected to a connecting shaft (11) that movably passes through a fixed block (9), the outer wall of the connecting shaft (11) is fixedly connected to symmetrically distributed L-shaped rods (12), and pulleys (13) are installed on the tops of the two L-shaped rods (12), the bottom of the filter screen plate (7) is fixedly connected to a hemispherical block (14) that is symmetrically distributed about the connecting shaft (11), four fixing rods (15) are fixedly connected between the outer wall of the fixing block (9) and the inner wall of the box body (1), and the box body (1) is provided with a first crushing mechanism (16) and a second crushing mechanism (17).

2. A crushing and screening machine for metal powder of lithium battery positive electrode material according to claim 1, characterized in that: The first pulverizing mechanism (16) comprises a second motor (18) mounted on the back of the box (1); the output end of the second motor (18) is fixedly connected to a first pulverizing roller (19) disposed in the box (1); the back of the first pulverizing roller (19) is rotatably connected to the inner wall of the box (1).

3. A crushing and screening machine for metal powder of lithium battery positive electrode material according to claim 1, characterized in that: The second pulverizing mechanism (17) comprises a third motor (20) mounted on the back of the box (1); the output end of the third motor (20) is fixedly connected to a second pulverizing roller (21) disposed in the box (1); the back of the second pulverizing roller (21) is rotatably connected to the inner wall of the box (1).

4. A crushing and screening machine for metal powder of lithium battery positive electrode material according to claim 3, characterized in that: The front of the box body (1) is provided with an openable box door (22).

5. The crushing and screening machine for metal powder of lithium battery positive electrode material according to claim 1, characterized in that: The inner wall of the box body (1) is fixedly connected with symmetrically distributed first material guide plates (23).

6. A crushing and screening machine for metal powder of lithium battery positive electrode material according to claim 1, characterized in that: The tops of the two mounting plates (6) are both fixedly connected with a second material guide plate (24).

7. A crushing and screening machine for metal powder of lithium battery positive electrode material according to claim 1, characterized in that: An arc-shaped plate (25) is arranged on the top of the filtering screen plate (7), and an opening (26) is opened at the bottom of the box body (1).

Images