Automatic iron removal device for silica powder

Abstract

The utility model relates to the technical field of silica powder manufacturing, in particular to an automatic iron removal device for silica powder, which comprises a stock bin, and a material circulating device is arranged at the bottom of the stock bin. A conveying belt body is arranged in the stock bin, and a first iron removal device and a second iron removal device are sequentially arranged at the top of the stock bin in the conveying direction of the conveying belt body. The first iron removal device comprises a first supporting plate, the first supporting plate is fixed to the front side face of the stock bin, a first height adjusting air cylinder is vertically and upwards arranged on the first supporting plate, and a first supporting vertical plate is fixed to a piston rod of the first height adjusting air cylinder; a first discharging air cylinder is horizontally arranged on the first supporting vertical plate, and a first door-shaped supporting frame is fixed to a piston rod of the first discharging air cylinder. According to the automatic iron removal device for the silica powder, iron impurities on the magnetic conductive roller can be cleaned without shutdown, so that the automatic iron removal device has higher iron removal efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon micropowder manufacturing, in particular to an automatic iron removal device for silicon micropowder. Background Art

[0002] Silicon carbide powder is widely used in wire cutting blades for solar silicon wafers, semiconductor silicon wafers and quartz chips. However, in the process of crushing silicon carbide powder into powder, it will inevitably be mixed with iron impurities because of the friction and crushing of iron materials such as shells, which seriously affects the product quality of silicon carbide powder. In the process of removing iron from the existing silicon powder, when the magnetic roller of the iron removal device absorbs a lot of iron impurities, it needs to be stopped for cleaning, resulting in low iron removal efficiency of the entire equipment. Utility Model Content

[0003] Purpose of the utility model: The utility model provides an automatic iron removal device for silicon micropowder, which can clean the iron impurities on the magnetic roller without stopping the machine, thereby having a higher iron removal efficiency.

[0004] In order to achieve the above object, the technical solution of the utility model is as follows:

[0005] An automatic iron removal device for silicon micropowder comprises a silo, and a material circulation device is arranged at the bottom of the silo;

[0006] A conveyor belt body is provided inside the silo, and a first iron removal device and a second iron removal device are provided in sequence on the top of the silo along the conveying direction of the conveyor belt body;

[0007] The first iron removal device includes a first support plate, the first support plate is fixed to the front side of the silo, a first height adjustment cylinder is vertically arranged on the first support plate, a first support vertical plate is fixed on the piston rod of the first height adjustment cylinder, a first discharging cylinder is horizontally arranged on the first support vertical plate, a first door-type support frame is fixed on the piston rod of the first discharging cylinder, a first iron removal roller is rotatably arranged in the first door-type support frame, a first rotating motor is horizontally arranged on one side of the first door-type support frame, and a rotor of the first rotating motor is fixedly connected to the first iron removal roller;

[0008] The second iron removal device includes a second support plate, which is fixed to the front side of the silo, a second height adjustment cylinder is vertically arranged on the second support plate, a second support vertical plate is fixed on the piston rod of the second height adjustment cylinder, a second discharging cylinder is horizontally arranged on the second support vertical plate, a second door-type support frame is fixed on the piston rod of the second discharging cylinder, a second iron removal roller is rotatably arranged in the second door-type support frame, a second rotating motor is horizontally arranged on one side of the second door-type support frame, and a rotor of the second rotating motor is fixedly connected to the second iron removal roller.

[0009] As an improvement: a hopper is provided at the rear side of the silo, and the hopper is located below the first iron removal device and the second iron removal device.

[0010] As an improvement: the material circulation device includes a horizontal screw conveyor and a vertical screw conveyor, the horizontal screw conveyor is arranged at the bottom of the silo, and the vertical screw conveyor is arranged on the right side of the silo.

[0011] As an improvement: a discharge pipe is provided below the horizontal screw conveyor, and a first electric valve is provided on the discharge pipe.

[0012] As an improvement: a discharge pipe is provided at the outlet of the vertical screw conveyor, and a second electric valve is provided on the discharge pipe.

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. The first iron removal device and the second iron removal device can be used alternately. When a certain amount of iron impurities are adsorbed on the first iron removal roller, the first discharging cylinder moves backward to move the first iron removal roller to the top of the receiving hopper, and the power supply of the first iron removal roller is disconnected. The iron impurities on the first iron removal roller can fall into the receiving hopper. During this period, the second iron removal roller is started to ensure that iron removal is not interrupted. When a certain amount of iron impurities are adsorbed on the second iron removal roller, the second discharging cylinder moves backward to move the second iron removal roller to the top of the receiving hopper, and the power supply of the second iron removal roller is disconnected. The iron impurities on the second iron removal roller can fall into the receiving hopper. During this period, the first iron removal roller is started to ensure that iron removal is not interrupted. Through the above operation, it is possible to clean the iron impurities on the magnetic roller without stopping the machine, thereby having a higher iron removal efficiency;

[0015] 2. The horizontal screw conveyor and the vertical screw conveyor cooperate with each other to realize the material circulation in the silo, achieve repeated iron removal operations, and improve the iron removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution in the present practical embodiment, the drawings required for use in the embodiment or the description of the prior art will be briefly introduced below.

[0017] Figure 1 The overall structure of a silicon micropowder automatic iron removal device Figure 1 ;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of part A;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of part B;

[0020] Figure 4 The overall structure of a silicon micropowder automatic iron removal device Figure 2 ;

[0021] Among them: 1. silo; 2. conveyor belt body; 3. first support plate; 4. second support plate; 5. first height-adjusting cylinder; 6. second height-adjusting cylinder; 7. first support upright plate; 8. second support upright plate; 9. first discharging cylinder; 10. second discharging cylinder; 11. first door-type support frame; 12. second door-type support frame; 13. first iron removal roller; 14. second iron removal roller; 15. first rotating motor; 16. second rotating motor; 17. horizontal screw conveyor; 18. vertical screw conveyor; 19. hopper; 20. discharging pipe; 21. discharge pipe; 22. first electric valve; 23. second electric valve. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] Please refer to Figure 1-Figure 4 , an automatic iron removal device for silicon micropowder, comprising a silo 1, at the bottom of which a material circulation device is provided;

[0024] A conveyor belt body 2 is provided inside the silo 1, and a first iron removal device and a second iron removal device are provided in sequence on the top of the silo 1 along the conveying direction of the conveyor belt body 2;

[0025] The first iron removal device includes a first support plate 3, the first support plate 3 is fixed to the front side of the silo 1, a first height adjustment cylinder 5 is vertically upwardly provided on the first support plate 3, a first support vertical plate 7 is fixed to the piston rod of the first height adjustment cylinder 5, a first discharging cylinder 9 is horizontally provided on the first support vertical plate 7, a first door-type support frame 11 is fixed to the piston rod of the first discharging cylinder 9, a first iron removal roller 13 is rotatably provided in the first door-type support frame 11, a first rotating motor 15 is horizontally provided on one side of the first door-type support frame 11, and a rotor of the first rotating motor 15 is fixedly connected to the first iron removal roller 13;

[0026] The second iron removal device includes a second support plate 4, which is fixed to the front side of the silo 1. A second height adjustment cylinder 6 is vertically arranged on the second support plate 4, a second support vertical plate 8 is fixed to the piston rod of the second height adjustment cylinder 6, a second discharge cylinder 10 is horizontally arranged on the second support vertical plate 8, a second door-type support frame 12 is fixed to the piston rod of the second discharge cylinder 10, a second iron removal roller 14 is rotatably arranged in the second door-type support frame 12, a second rotating motor 16 is horizontally arranged on one side of the second door-type support frame 12, and the rotor of the second rotating motor 16 is fixedly connected to the second iron removal roller 14. A hopper 19 is arranged at the rear side of the silo 1, and the hopper 19 is located below the first and second iron removal devices.

[0027] The first iron removal device and the second iron removal device can be used alternately. When a certain amount of iron impurities are adsorbed on the first iron removal roller 13, the first discharging cylinder 9 moves backward to move the first iron removal roller 13 to the top of the receiving hopper 19, and the power supply of the first iron removal roller 13 is disconnected. The iron impurities on the first iron removal roller 13 can fall into the receiving hopper 19. During this period, the second iron removal roller 14 is started to ensure that iron removal is not interrupted. When a certain amount of iron impurities are adsorbed on the second iron removal roller 14, the second discharging cylinder 10 moves backward to move the second iron removal roller 14 to the top of the receiving hopper 19, and the power supply of the second iron removal roller 14 is disconnected. The iron impurities on the second iron removal roller 14 can fall into the receiving hopper 19. During this period, the first iron removal roller 13 is started to ensure that iron removal is not interrupted. Through the above operation, it is possible to clean the iron impurities on the magnetic roller without stopping the machine, thereby having a higher iron removal efficiency.

[0028] The material circulation device includes a horizontal screw conveyor 17 and a vertical screw conveyor 18. The horizontal screw conveyor 17 is arranged at the bottom of the silo 1, and the vertical screw conveyor 18 is arranged on the right side of the silo 1. A discharge pipe 20 is arranged below the horizontal screw conveyor 17, and a first electric valve 22 is arranged on the discharge pipe 20. A discharge pipe 21 is arranged at the outlet of the vertical screw conveyor 18, and a second electric valve 23 is arranged on the discharge pipe 21. The horizontal screw conveyor 17 and the vertical screw conveyor 18 cooperate with each other to realize the material circulation in the silo 1, realize repeated iron removal operations, and improve the iron removal effect.

[0029] In this embodiment, the first iron removal roller 13 and the second iron removal roller 14 are both made of electromagnets.

[0030] Working principle: the material is placed into the silo 1 through the gap between the conveyor belt body 2 and the silo 1, the horizontal screw conveyor 17 and the vertical screw conveyor 18 are started, and the material is transported to the conveyor belt body 2 in real time. The first iron removal roller 13 is energized, and the first rotating motor 15 is started. The first rotating motor 15 drives the first iron removal roller 13 to rotate, so that the surface of the first iron removal roller 13 contacts the material on the conveyor belt body 2, thereby realizing the adsorption and removal of iron impurities in the silicon micropowder. When a certain amount of iron impurities are adsorbed on the first iron removal roller 13, the first discharging cylinder 9 moves backward to move the first iron removal roller 13 to the top of the receiving hopper 19, and the power supply of the first iron removal roller 13 is disconnected. The iron impurities on the first iron removal roller 13 can fall into the receiving hopper 19. During this period, the second iron removal roller 14 is started to ensure that the iron removal is not interrupted.

[0031] The second rotating motor 16 is turned on, and the second rotating motor 16 drives the second iron removal roller 14 to rotate, so that the surface of the second iron removal roller 14 contacts the material on the conveyor belt body 2, thereby realizing the adsorption and removal of iron impurities in the silicon micropowder. When a certain amount of iron impurities are adsorbed on the second iron removal roller 14, the second discharging cylinder 10 moves backward to move the second iron removal roller 14 to above the receiving hopper 19, and the power supply of the second iron removal roller 14 is disconnected. The iron impurities on the second iron removal roller 14 can fall into the receiving hopper 19. During this period, the first iron removal roller 13 is started to ensure that the iron removal is not interrupted.

[0032] The first height-adjusting cylinder 5 and the second height-adjusting cylinder 6 can adjust the heights of the first iron removal roller 13 and the second iron removal roller 14 respectively. When the iron removal is completed, the second electric valve 23 is closed, the first electric valve 22 is opened, and the material is discharged through the discharge pipe 20.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A silicon micropowder automatic iron removal device, characterized in that: It includes a silo, at the bottom of which a material circulation device is provided; A conveyor belt body is provided inside the silo, and a first iron removal device and a second iron removal device are provided in sequence on the top of the silo along the conveying direction of the conveyor belt body; The first iron removal device includes a first support plate, the first support plate is fixed to the front side of the silo, a first height adjustment cylinder is vertically arranged on the first support plate, a first support vertical plate is fixed on the piston rod of the first height adjustment cylinder, a first discharging cylinder is horizontally arranged on the first support vertical plate, a first door-type support frame is fixed on the piston rod of the first discharging cylinder, a first iron removal roller is rotatably arranged in the first door-type support frame, a first rotating motor is horizontally arranged on one side of the first door-type support frame, and a rotor of the first rotating motor is fixedly connected to the first iron removal roller; The second iron removal device includes a second support plate, which is fixed to the front side of the silo, a second height adjustment cylinder is vertically arranged on the second support plate, a second support vertical plate is fixed on the piston rod of the second height adjustment cylinder, a second discharging cylinder is horizontally arranged on the second support vertical plate, a second door-type support frame is fixed on the piston rod of the second discharging cylinder, a second iron removal roller is rotatably arranged in the second door-type support frame, a second rotating motor is horizontally arranged on one side of the second door-type support frame, and a rotor of the second rotating motor is fixedly connected to the second iron removal roller.

2. The automatic iron removal device for silicon powder according to claim 1, characterized in that: A material receiving hopper is provided at the rear side of the silo, and the material receiving hopper is located below the first iron removal device and the second iron removal device.

3. The automatic iron removal device for silicon powder according to claim 1, characterized in that: The material circulation device includes a horizontal screw conveyor and a vertical screw conveyor. The horizontal screw conveyor is arranged at the bottom of the silo, and the vertical screw conveyor is arranged on the right side of the silo.

4. The automatic iron removal device for silicon powder according to claim 3 is characterized in that: A discharge pipe is provided below the horizontal screw conveyor, and a first electric valve is provided on the discharge pipe.

5. The automatic iron removal device for silicon powder according to claim 3, characterized in that: A discharge pipe is provided at the outlet of the vertical screw conveyor, and a second electric valve is provided on the discharge pipe.

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