A forced feeder device for preparing iron phosphate

Abstract

The utility model discloses a kind of forced feeder devices for preparing iron phosphate, belong to iron phosphate preparation device field.The above-mentioned device includes material conveying unit, material dispersion and demagnetization unit, powder conveying unit and forced feeder unit;Material conveying unit is used to convey material to material dispersion and demagnetization unit, and material dispersion and demagnetization unit includes material bin, net material board, air shock structure arranged around net material board, pusher structure arranged at the bottom of material bin and discharge gate, net material board is inclinedly arranged, and surface is distributed with demagnetization structure;Powder conveying unit is used to convey powder obtained by processing material dispersion and demagnetization unit to forced feeder unit.The utility model is processed by the net material board and air shock structure of inclined arrangement, let filter cake be evenly spread under the action of gravity, evenly discharge under the action of air shock, and then magnetic metal particles in material are enriched using demagnetization structure, to realize uniform feeding and remove magnetic metal foreign matter.

Description

Technical Field

[0001] This utility model belongs to the field of ferric phosphate preparation equipment, specifically relating to a forced feeder device for preparing ferric phosphate. Background Technology

[0002] Iron phosphate, used as the iron source for preparing lithium iron phosphate, a cathode material for lithium-ion batteries, contains a certain amount of free water and water of crystallization. Therefore, forced feeder drying is a common treatment method. Forced feeder drying, which requires no complex equipment or processes, is widely used due to its high production efficiency and low cost.

[0003] Currently, in ferric phosphate production, the ferric phosphate filter cake is conveyed to the forced feeder hopper via belt and then enters the flash evaporator via a screw conveyor. The filter cake directly enters the bottom area of ​​the hopper, which can easily cause two problems: firstly, uneven feeding; and secondly, uneven force on the rotating guide bar at the bottom of the hopper due to uneven feeding, which can easily lead to its breakage. After breakage, welding and grinding are required inside the hopper, introducing magnetic metal particles and increasing the concentration of magnetic particles in the material, resulting in defective products. Magnetic metal foreign objects are a safety hazard in the battery industry, so it is necessary to achieve uniform feeding from the hopper to reduce the risk of introducing metal foreign objects.

[0004] In summary, there is a need to design a forced feeder device for the preparation of ferric phosphate that has the functions of uniform feeding and demagnetization. Utility Model Content

[0005] Purpose of the utility model: The present utility model aims to provide a forced feeder device for preparing ferric phosphate that provides uniform feeding and removes magnetic impurities.

[0006] Technical Solution: The forced feeder device for preparing ferric phosphate according to this utility model includes a material conveying unit, a material dispersion and demagnetization unit, a powder conveying unit, and a forced feeder unit. The material conveying unit is used to convey the ferric phosphate filter cake to the material dispersion and demagnetization unit. The material dispersion and demagnetization unit includes a material bin, a mesh material plate disposed inside the material bin, several air-vibration structures disposed around the mesh material plate, a pusher structure disposed at the bottom of the material bin, and a discharge port. Several demagnetization structures are distributed on the mesh material plate. The mesh material plate is inclined. The powder conveying unit is used to convey the powder obtained from the material dispersion and demagnetization unit to the forced feeder unit.

[0007] Furthermore, the material conveying unit is a belt conveyor; the distance between the belt conveyor and the mesh material plate is greater than 0.5 meters, which is sufficient to allow the material conveyed by the belt conveyor to be evenly distributed on the mesh material plate by gravity.

[0008] Furthermore, the demagnetizing structure is a magnetic rod distributed between the holes in the mesh material plate.

[0009] Furthermore, the tilt angle of the mesh material plate is 10-12°.

[0010] Furthermore, the mesh material plate has a detachable structure, allowing for regular cleaning and maintenance.

[0011] Furthermore, the pushing structure is a pusher, used to push the material, after being dispersed and demagnetized by the air vibration structure and the demagnetization structure, to the discharge port.

[0012] Furthermore, the material conveying unit is a screw conveyor.

[0013] Furthermore, the spiral conveyor is provided with a feed inlet located directly below the discharge port in the material dispersion and demagnetization unit;

[0014] Furthermore, the number of the air-vibration structures is even, and they are arranged opposite each other around the mesh material plate.

[0015] Furthermore, the forced feeder unit is a forced feeder device.

[0016] Invention principle: In this utility model, by setting an inclined mesh material plate in the material dispersion and demagnetization unit and setting an air vibration structure around it, uniform feeding can be achieved, avoiding uneven force on the pushing structure caused by uneven material distribution, which could lead to breakage; the demagnetization structure distributed on the mesh material plate can enrich and remove magnetic impurities in the material, and high magnetic materials can be collected and removed by periodically cleaning the mesh material plate.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following advantages: The present invention uses an inclined mesh material plate and an air vibration structure to make the ferric sulfate filter cake spread evenly under gravity and fed evenly under air vibration. Then, the demagnetizing structure is used to enrich the magnetic metal particles in the material, so as to achieve uniform feeding and removal of magnetic metal foreign objects. At the same time, it can also avoid downtime caused by the breakage of the pusher structure - the ruler and the introduction of magnetic impurities. Attached Figure Description

[0018] Figure 1 This is a partial perspective view of the forced feeder device used to prepare ferric phosphate in Example 1;

[0019] Figure 2 This is a partial top view of the forced feeder device used to prepare ferric phosphate in Example 1;

[0020] Figure 3 This is a partial front view of the forced feeder device used to prepare ferric phosphate in Example 1. Detailed Implementation

[0021] The present invention will now be further described in conjunction with specific embodiments and accompanying drawings.

[0022] Example 1: The forced feeder device for preparing ferric phosphate described in this utility model includes a material conveying unit - belt conveyor 1, a material dispersion and demagnetization unit, a powder conveying unit - screw conveyor 7, and a forced feeder unit - forced feeder equipment; as follows Figures 1-3 As shown, belt conveyor 1 is used to transport the ferric phosphate filter cake to the material dispersion and demagnetization unit. The material dispersion and demagnetization unit includes a material bin 3, a mesh material plate 2 located inside the material bin 3, four air-vibration structures 8 arranged opposite each other around the mesh material plate 2, a pusher structure 4 located at the bottom of the material bin 3, and a discharge port 5. Several magnetic rods 9 for demagnetization are distributed on the mesh material plate 2, distributed between the holes on the mesh material plate 2. The mesh material plate 2 is inclined at an angle of 10° and is a detachable structure. The screw conveyor 7 is used to convey the powder obtained from the material dispersion and demagnetization unit to the forced feeder equipment. The screw conveyor 7 is provided with a feed port 6, located directly below the discharge port 5 in the material dispersion and demagnetization unit.

[0023] The above-mentioned forced feeder device is used as follows: The belt conveyor 1 conveys the ferric phosphate filter cake to the mesh material plate 2. The distance between the belt conveyor 1 and the mesh material plate 2 is 1 meter. The material volume is large, and the mesh material plate 2 is inclined, so the material can cover the entire plate. Therefore, the material - ferric phosphate filter cake - is evenly spread on the mesh material plate 2 under the action of gravity. The ferric phosphate filter cake is then evenly fed under the action of the air vibration structure 8. At the same time, the magnetic rod 9 enriches the magnetic metal particles in the ferric phosphate filter cake. After dispersion and demagnetization, the material is fed through the holes of the mesh material plate 2 to the bottom of the material bin 3. The lever pushes the material to the discharge port 5 by rotation. The material is then conveyed through the pipeline to the discharge port 6 and enters the screw conveyor device 7. The screw conveyor device 7 then conveys the material to the forced feeder equipment for forced feeding processing.

[0024] Mesh material board 2 is cleaned and collected periodically according to usage.

Claims

1. A forced feeder device for preparing iron phosphate, characterized in that, The system includes a material conveying unit, a material dispersion and demagnetization unit, a powder conveying unit, and a forced feeder unit. The material conveying unit conveys the ferric phosphate filter cake to the material dispersion and demagnetization unit, which includes a material hopper, a mesh material plate inside the hopper, several air-vibration structures around the mesh material plate, a pusher structure at the bottom of the hopper, and a discharge port. Several demagnetization structures are distributed on the mesh material plate, which is inclined. The powder conveying unit conveys the powder obtained from the material dispersion and demagnetization unit to the forced feeder unit.

2. The forced feeder device according to claim 1, characterized in that, The material conveying unit is a belt conveyor.

3. The forced feeder device according to claim 1, characterized in that, The demagnetizing structure is a magnetic rod distributed between the holes in the mesh material plate.

4. The forced feeder device according to claim 1, characterized in that, The tilt angle of the mesh material plate is 10-12°.

5. The forced feeder device according to claim 1, characterized in that, The mesh material plate has a detachable structure.

6. The forced feeder device according to claim 1, characterized in that, The pusher structure is a lever.

7. The forced feeder device according to claim 1, characterized in that, The material conveying unit is a screw conveyor.

8. The forced feeder device according to claim 7, characterized in that, The spiral conveyor is equipped with a feed inlet located directly below the discharge port in the material dispersion and demagnetization unit.

9. The forced feeder device according to claim 1, characterized in that, The number of the air-vibration structures is even, and they are arranged opposite each other around the mesh material plate.

10. The forced feeder device according to claim 1, characterized in that, The forced feeder unit is a forced feeder device.

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