Material separation device of mechanical pulverizer

Abstract

A material separating device of a mechanical pulverizer comprises a spiral conveyor used for separating materials, the spiral conveyor comprises a machine shell and a working cavity formed in the machine shell, and an air inlet channel used for introducing positive pressure airflow into the working cavity is formed in the machine shell. According to the utility model, the structure can be greatly simplified, the cost is reduced, the operation and the maintenance are easy, the positive pressure airflow is introduced to strip the powder in the material, and the separation efficiency, the powder recovery rate and the material purity after the powder is separated are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of material separation technology, and in particular to a material separation device for a mechanical crusher. Background Technology

[0002] Electrodes are a key component of batteries, consisting of positive and negative electrodes. Positive electrodes are aluminum foil coated with a lithium-ion slurry, while negative electrodes are copper foil coated with a slurry primarily composed of graphite. With the increasing demand for recycled batteries, efficiently recovering the aluminum / copper sheets from the electrodes and removing the black powder has become a pressing technical problem. Current recycling methods primarily use mechanical shredders to separate the aluminum / copper sheets from the black powder. However, in practical applications, a significant amount of black powder remains after the aluminum scraps are transported, affecting recycling efficiency and purity.

[0003] Currently, the separation of aluminum / copper sheet and black powder mixtures is mainly achieved using mechanical pulverizers equipped with classifiers and cyclone separators, but this method is costly and involves complex system design. Therefore, the recovery rate and separation efficiency of the electrode sheets urgently need further improvement, especially in terms of reducing costs, simplifying the system, and increasing processing efficiency, which still presents significant challenges. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings of the prior art and provide a material separation device for a mechanical pulverizer that is simple in structure, low in cost, and has a good separation effect.

[0005] The technical solution of this utility model is: a material separation device for a mechanical crusher, including a screw conveyor for separating materials. The screw conveyor includes a housing and a working chamber disposed within the housing. The housing is provided with an air intake channel for introducing positive pressure airflow into the working chamber.

[0006] Furthermore, the screw conveyor is connected to the lower part of the cylinder, and the casing of the screw conveyor is also provided with a powder discharge port that communicates with the inner cavity of the cylinder; the cylinder is equipped with a discharge device for discharging the powder generated by the positive pressure airflow separation.

[0007] Furthermore, the cylinder is divided into a lower cavity and an upper cavity, with the screw conveyor located in the lower cavity and its two ends and the air inlet channel exposed outside the cylinder; the discharge device is located in the upper cavity.

[0008] Furthermore, the air intake channel is an air intake pipe connected to the screw conveyor or an air intake port or air intake hole opened on the screw conveyor.

[0009] Furthermore, the air intake channel is an air intake pipe welded or threaded onto the screw conveyor.

[0010] Furthermore, the screw conveyor is equipped with air inlet pipes at both ends of its upper part, and the air inlet pipes at both ends are arranged symmetrically.

[0011] Furthermore, the air intake pipe is inclined.

[0012] Furthermore, the powder outlet is located at the upper middle position of the bolt conveyor, and the air inlet channels are symmetrically arranged on both sides of the powder outlet. The powder outlet area serves as a powder screening area.

[0013] Furthermore, the inclination angle of the air intake pipe is 45~75°.

[0014] Furthermore, one end of the screw conveyor is a feed inlet and the other end is a discharge outlet; the discharge device is a grading wheel located at the top of the cylinder.

[0015] Furthermore, the material is an electrode sheet, and the separated powder is black powder.

[0016] The beneficial effects of this utility model are as follows: On the one hand, by using a screw conveyor combined with an air inlet channel for material separation, the structure can be greatly simplified, the cost reduced, and the operation and maintenance made easier. Furthermore, the introduction of positive pressure airflow to strip the powder from the material greatly improves the separation efficiency, powder recovery rate, and the purity of the separated powder. On the other hand, by setting up symmetrical air inlet pipes, the airflow can be ensured to be evenly distributed throughout the screw conveyor, thereby improving the powder recovery rate and the purity of aluminum / copper shavings. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 Side view of the embodiment shown.

[0019] Explanation of reference numerals in the attached diagram:

[0020] 1. Screw conveyor; 2. Cylinder; 3. Air inlet pipe; 4. Powder screening area; 11. Powder outlet; 12. Feed inlet; 13. Discharge outlet; 21. Upper cavity; 22. Lower cavity; 23. Cylinder outlet. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 and Figure 2As shown: A material separation device for a mechanical crusher includes a screw conveyor 1 for separating materials. The screw conveyor 1 includes a housing and a working chamber disposed within the housing. The housing is provided with an air intake channel for introducing positive pressure airflow into the working chamber.

[0023] The above scheme has the following advantages: by using a screw conveyor 1 in combination with an air inlet channel for material separation, the structure can be greatly simplified, the cost can be reduced, and it is easy to operate and maintain. Furthermore, the introduction of positive pressure airflow to strip the powder from the material greatly improves the separation efficiency, powder recovery rate, and the purity of the material after the powder is separated.

[0024] In this embodiment, the screw conveyor 1 is installed at the lower part of the cylinder 2. The middle of the casing of the screw conveyor 1 is also provided with a powder discharge port 11 that communicates with the inner cavity of the cylinder. The cylinder 2 is equipped with a discharge device for discharging the powder generated by the positive pressure airflow separation. Specifically, the cylinder 2 is divided into an upper cavity 21 and a lower cavity 22. The screw conveyor 1 is installed inside the lower cavity 22, and both ends of the screw conveyor 1 and the air inlet channel are exposed outside the cylinder 2 to facilitate the input and output of materials and the introduction of positive pressure airflow. The remaining part of the screw conveyor is basically enclosed by the cylinder 2, especially the powder discharge port 11, which must be enclosed to prevent the powder from dispersing and polluting the environment during the conveying process. The upper cavity 21 of the cylinder has a circular cross-sectional shape to accommodate the powder discharged by the screw conveyor 1, which is then discharged and recycled via the discharge device. The discharge device can be located at the top of the inner cavity of the upper cavity or outside the cylinder and communicate with the upper cavity. In this embodiment, the preferred discharge mechanism is a classifying wheel (not shown in the figure) located within the upper cavity 21, used to discharge the powder separated from the material through the cylinder discharge port 23 at the top of the cylinder, thereby improving the powder recovery rate. In this embodiment, the cylinder serves two purposes: firstly, it encloses the powder conveying process, preventing powder scattering and environmental pollution; and secondly, the discharge device on the cylinder discharges the powder separated by the positive pressure airflow, helping to maintain a stable working state. Furthermore, the cylinder design allows the airflow, material conveying, and powder separation functions to be carried out in an orderly manner within a single structure, improving the overall integration and working efficiency of the equipment.

[0025] The equipment in this embodiment is mainly used for powder separation. Preferably, the material is the shavings produced after the electrode sheets (such as aluminum / copper sheets) are crushed, usually aluminum / copper shavings. The screw conveyor 1 has an inlet 12 and an outlet 13 at its two ends. The inlet 12 is used to connect to the aluminum / copper shavings outlet of the crusher. After the aluminum / copper sheets are crushed by the crusher, they form aluminum / copper shavings that enter the working chamber of the screw conveyor 1. The working chamber of the screw conveyor 1 is equipped with rotating spiral blades for conveying the material. By introducing positive pressure airflow from the air inlet channel, the black powder in the aluminum / copper shavings is stripped off. The stripped black powder is discharged into the cylinder 2 through the powder outlet 11 of the screw conveyor for discharge and recycling, while the aluminum / copper shavings after stripping the black powder are output to the next process through the outlet 13 of the screw conveyor 1.

[0026] In this embodiment, the air intake channel is preferably an additional air intake pipe 3. An air intake pipe 3 is welded to each of the two sides of the upper part of the screw conveyor casing, and the two air intake pipes 3 are symmetrically arranged, specifically symmetrically arranged relative to the powder discharge port 11 in the middle of the screw conveyor. This symmetrical arrangement ensures that the airflow is evenly distributed throughout the screw conveyor 1, preventing airflow concentration on one side, which could lead to uneven material conveying or poor separation. It also ensures that the powder is subjected to uniform airflow during conveying, thereby improving the powder recovery rate and the purity of the aluminum / copper shavings. Furthermore, it helps to balance the airflow pressure, preventing excessive local pressure caused by airflow concentration on one side. Additionally, by placing the air intake pipe 3 on the upper part of the screw conveyor casing rather than the lower part, it facilitates the operator's observation of the airflow effect, the conveying process, and the presence of black powder. Moreover, the positive pressure airflow can act evenly on the black powder in the aluminum / copper shavings from above, effectively promoting the removal of black powder, reducing material accumulation, and improving the separation effect.

[0027] In this embodiment, the two air inlet pipes 3 are inclined, preferably at an angle of 60°. That is, the two air inlet pipes 3 are symmetrically inclined and both are inclined in a direction away from the powder discharge port 11, so as to facilitate observation of the material condition at the discharge port 13 and further observe whether there is black powder.

[0028] In this embodiment, the powder discharge port area is designated as the powder screening zone 4. Specifically, the powder discharge port 11 and the surrounding area near the powder discharge port 11 are collectively designated as the powder screening zone 4. The powder screening zone 4 refers to the area where powder is stripped and discharged.

[0029] The working principle of this embodiment is as follows: When aluminum / copper shavings enter the working chamber of the screw conveyor 1 through the feed port, positive pressure airflow is introduced through the air inlet pipe 3 to strip the black powder in the input aluminum / copper shavings. The aluminum / copper shavings are finally output through the discharge port 13 of the screw conveyor, while the stripped black powder is discharged into the cylinder 2 through the powder discharge port 11 and discharged through the classifying wheel at the top of the cylinder 2. This greatly improves the black powder recovery rate and greatly simplifies the system for subsequent processes.

[0030] Furthermore, the term "connection" should be interpreted broadly, for example, it can include fixed connections, detachable connections, or integral connections; it can include direct connections or indirect connections through an intermediate medium, and it can also include internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A material separation device for a mechanical crusher, characterized in that, The invention includes a screw conveyor for separating materials. The screw conveyor includes a housing and a working chamber located within the housing. The housing is provided with an air intake channel for introducing positive pressure airflow into the working chamber. The air intake channel is an air intake pipe connected to the screw conveyor, and the air intake pipes are provided at both ends of the upper part of the screw conveyor, with the air intake pipes at both ends arranged symmetrically.

2. The material separation device of the mechanical pulverizer according to claim 1, characterized in that, The screw conveyor is connected to the lower part of the cylinder, and the casing of the screw conveyor is also provided with a powder discharge port that communicates with the inner cavity of the cylinder; the cylinder is equipped with a discharge device for discharging the powder generated by the positive pressure airflow separation.

3. The material separation device of the mechanical pulverizer according to claim 2, characterized in that, The cylinder is divided into a lower cavity and an upper cavity. The screw conveyor is located in the lower cavity, and its two ends and the air inlet channel are exposed outside the cylinder. The discharge device is located in the upper cavity.

4. The material separation device of the mechanical pulverizer according to claim 1, 2, or 3, characterized in that, The air intake channel is a welded or threaded air intake pipe for the screw conveyor.

5. The material separation device of the mechanical pulverizer according to claim 1, 2, or 3, characterized in that, The air intake pipe is set at an angle.

6. The material separation device of the mechanical pulverizer according to claim 2 or 3, characterized in that, The powder outlet is located at the upper middle position of the bolt conveyor, and the air inlet channels are symmetrically arranged on both sides of the powder outlet. The powder outlet area serves as the powder screening area.

7. The material separation device of the mechanical pulverizer according to claim 5, characterized in that, The inclination angle of the air intake pipe is 45~75°.

8. The material separation device of the mechanical pulverizer according to claim 2 or 3, characterized in that, One end of the screw conveyor is the feed inlet, and the other end is the discharge outlet; the discharge device is a classifying wheel located at the top of the cylinder; the material is electrode sheets, and the separated powder is black powder.

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