Magnetic separator for silicon powder production

Abstract

The utility model relates to the field of magnetic separation equipment, concretely relates to a magnetic separator for silicon powder production, including the box, the horizontal extension of the rotary drum is rotationally arranged in the box, the box of rotary drum top is provided with a plurality of feeding tubes, the both ends of rotary drum are provided with the support pipe of box rotation connection, the outside of box is provided with the drive mechanism connected with one of support pipes, the inside of rotary drum is provided with the mounting bracket, the inside side portion and the upper portion of rotary drum are provided with the electromagnet of fixed mounting bracket, the mounting bracket is provided with the crossbeam that extends from support pipe to the outside of box, the crossbeam is fixedly connected with the box, the both sides of lower part of rotary drum are provided with the inclined slide, the bottom of inclined slide is provided with the first feeding groove, the lower end of rotary drum is provided with the V type groove, the middle part of V type groove is provided with the second feeding groove, the inside of V type groove is provided with the scraper that is pressed in the bottom end of rotary drum. The utility model has the advantages of closed magnetic separation, avoids dust.

Description

Technical Field

[0001] This utility model relates to the field of magnetic separation equipment, specifically to a magnetic separator for silicon powder production. Background Technology

[0002] Silicon powder is an ultrafine powder produced by collecting and processing the dust emitted with the exhaust gas during the smelting of industrial silicon or ferrosilicon in industrial electric furnaces. Its main component is silicon dioxide (SiO2). Magnetic separators for silicon powder production are mainly used to remove ferromagnetic impurities (such as mechanical wear iron filings and iron-containing minerals) from the raw materials to ensure that the purity of silicon powder meets the needs of high-end industries such as electronics and photovoltaics. Existing magnetic separators for silicon powder production generate dust during the process, which affects the environment in the workshop. Therefore, it is necessary to design a magnetic separator for silicon powder production that avoids dust generation. Summary of the Invention

[0003] The purpose of this invention is to provide a magnetic separator for silicon powder production, which has the advantage of avoiding dust generation.

[0004] The technical solution adopted is as follows:

[0005] A magnetic separator for silicon powder production includes a housing, a horizontally extending rotating drum rotatably mounted inside the housing, multiple feed pipes above the rotating drum on the housing, support pipes rotatably connected to the housing at both ends of the rotating drum, a drive mechanism connected to one of the support pipes outside the housing, a mounting frame inside the rotating drum fixedly connected to the housing, electromagnets fixed to the mounting frame on the inner side and upper part of the rotating drum, a crossbeam extending from the support pipe to the outside of the housing on the mounting frame, inclined slides on both sides of the lower part of the rotating drum, a first feeding trough at the bottom of each inclined slide, a first discharge pipe connected to the end of the first feeding trough, a V-shaped groove at the lower end of the rotating drum, a second feeding trough in the middle of the V-shaped groove, a second discharge pipe connected to the end of the second feeding trough, and a scraper pressed against the bottom of the rotating drum inside the V-shaped groove.

[0006] Preferably, both the first and second feeding troughs are equipped with rotatable pusher screws, and the housing is equipped with an electric motor connected to the corresponding pusher screw.

[0007] Preferably, the side of the rotating drum is provided with two limiting rings, and the limiting rings correspond to the end positions of the electromagnet.

[0008] Preferably, the driving mechanism includes an external gear ring, which is coaxially and fixedly connected to the support tube. A drive motor is provided on the housing, and the drive motor is provided with a gear that meshes with the external gear ring.

[0009] Preferably, the rotating drum is made of aluminum alloy.

[0010] Preferably, a cooling fan is provided on the mounting bracket inside the rotating drum.

[0011] Compared to existing technologies, the advantages are:

[0012] This invention performs magnetic separation of silicon powder inside a chamber. The separated silicon powder is discharged from two first discharge pipes, while the iron particles are discharged from a second discharge pipe. The dust generated during the magnetic separation process exists only inside the chamber and will not affect the external environment, thus preventing dust generation. Attached Figure Description

[0013] Figure 1 This is a front left perspective view of a magnetic separator for silicon powder production according to this utility model.

[0014] Figure 2 This is a front right perspective view of a magnetic separator for silicon powder production according to this utility model.

[0015] Figure 3 This is a side view of a magnetic separator for silicon powder production according to this utility model.

[0016] Figure 4 This is a front view schematic diagram of a magnetic separator for silicon powder production according to this utility model.

[0017] In the diagram: 1. Housing; 2. Rotary drum; 3. Feed pipe; 4. Support pipe; 5. External gear ring; 6. Drive motor; 7. Gear; 8. Mounting bracket; 9. Electromagnet; 10. Cooling fan; 11. Crossbeam; 12. Limiting ring; 13. Inclined slide; 14. First feeding chute; 15. First discharge pipe; 16. V-groove; 17. Second feeding chute; 18. Scraper; 19. Second discharge pipe; 20. Pushing screw; 21. Electric motor. Detailed Implementation

[0018] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 4 As shown:

[0019] Example 1: A magnetic separator for silicon powder production includes a housing 1, a horizontally extending rotating drum 2 rotatably arranged inside the housing 1, a plurality of feed pipes 3 arranged above the rotating drum 2 on the housing 1, the feed pipes 3 being vertically corresponding to the rotating drum 2, support pipes 4 rotatably connected to the housing 1 at both ends of the rotating drum 2, the support pipes 4 being rotatably sealed to the housing 1, and a drive mechanism connected to one of the support pipes 4 being arranged outside the housing 1, the drive mechanism driving the rotating drum 2 to rotate.

[0020] The rotating drum 2 is equipped with a mounting frame 8. Electromagnets 9 are fixed on the mounting frame 8 on the inner side and upper part of the rotating drum 2. Electromagnets 9 are existing technology and will not be described in detail here. The mounting frame 8 is equipped with a crossbeam 11 extending from the support tube 4 to the outside of the box 1. The crossbeam 11 is fixedly connected to the box 1. The electromagnets 9 are located inside the rotating drum 2 and do not rotate with the rotating drum 2.

[0021] Inclined slides 13 are provided on both sides of the lower part of the rotating drum 2. A first feeding trough 14 is provided at the bottom of each inclined slide 13. A first discharge pipe 15 is connected to the end of the first feeding trough 14. A V-shaped groove 16 is provided at the lower end of the rotating drum 2. A second feeding trough 17 is provided in the middle of the V-shaped groove 16. A second discharge pipe 19 is connected to the end of the second feeding trough 17. A scraper 18 is pressed against the bottom of the rotating drum 2 inside the V-shaped groove 16.

[0022] During magnetic separation, the drive mechanism is started to drive the rotating drum 2 to rotate. Then, silicon powder is fed in from the feed pipe 3. The silicon powder falls from the top of the rotating drum 2 onto the rotating drum 2. The magnetic material is attracted to the side wall of the rotating drum 2. The silicon powder slides down from the side wall of the rotating drum 2 and falls into the inclined slide 13. It is discharged from the first discharge pipe 15. After the magnetic material rotates to the lower end and loses the magnetic force of the electromagnet 9, it is scraped off by the scraper 18. After being scraped off, it falls into the V-shaped groove 16 and is discharged from the second discharge pipe 19.

[0023] Example 2: A magnetic separator for silicon powder production includes a housing 1, inside which a horizontally extending rotating drum 2 is rotatably arranged. The rotating drum 2 is made of aluminum alloy. Above the rotating drum 2, the housing 1 is provided with multiple feed pipes 3, which are vertically aligned with the rotating drum 2. Both ends of the rotating drum 2 are provided with support pipes 4 that are rotatably connected to the housing 1. The support pipes 4 and the housing 1 are rotatably sealed together. Outside the housing 1, a drive mechanism is provided that is connected to one of the support pipes 4. The drive mechanism drives the rotating drum 2 to rotate. The drive mechanism includes an external gear ring 5, which is coaxially fixedly connected to the support pipe 4. The housing 1 is provided with a drive motor 6, which is provided with a gear 7 that meshes with the external gear ring 5.

[0024] The rotating drum 2 is equipped with a mounting frame 8 inside. Electromagnets 9 are fixed on the mounting frame 8 on the inner side and upper part of the rotating drum 2. Electromagnets 9 are existing technology and will not be described in detail here. A cooling fan 10 is installed on the mounting frame 8 inside the rotating drum 2 to dissipate heat from the electromagnets 9. The mounting frame 8 is equipped with a crossbeam 11 extending from the support tube 4 to the outside of the housing 1. The crossbeam 11 is fixedly connected to the housing 1. The electromagnets 9 are located inside the rotating drum 2 and do not rotate with the rotating drum 2. Two limiting rings 12 are provided on the side of the rotating drum 2. The limiting rings 12 correspond to the end positions of the electromagnets 9.

[0025] Inclined slides 13 are provided on both sides of the lower part of the rotating drum 2. A first feeding trough 14 is provided at the bottom of each inclined slide 13. A first discharge pipe 15 is connected to the end of the first feeding trough 14. A V-shaped groove 16 is provided at the lower end of the rotating drum 2. A second feeding trough 17 is provided in the middle of the V-shaped groove 16. A second discharge pipe 19 is connected to the end of the second feeding trough 17. A scraper 18 is provided inside the V-shaped groove 16 and pressed against the bottom of the rotating drum 2. A pushing screw 20 is rotatably provided in both the first feeding trough 14 and the second feeding trough 17. A motor 21 connected to the corresponding pushing screw 20 is provided inside the housing 1. The pushing screw 20 assists in the movement of the powder.

[0026] The working principle is as follows:

[0027] During magnetic separation, the electromagnet 9, cooling fan 10, and drive mechanism are activated. The drive mechanism drives the rotating drum 2 to rotate, and then silicon powder is fed in through the feed pipe 3. The silicon powder falls from the top of the rotating drum 2 onto the side wall of the rotating drum 2. The silicon powder slides down the side wall of the rotating drum 2 and falls into the inclined slide 13, and is discharged from the first discharge pipe 15. After the magnetically attracted material rotates to the bottom and loses the magnetic force of the electromagnet 9, it is scraped off by the scraper 18. After being scraped off, it falls into the V-shaped groove 16 and is discharged from the second discharge pipe 19. During this process, the motor 21 drives the corresponding pusher screw 20 to rotate and push the material out. The dust generated during the magnetic separation process only exists inside the box 1 and will not affect the external environment of the box 1, thus avoiding dust.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A magnetic separator for silicon powder production, characterized in that: The device includes a housing (1), inside which a horizontally extending rotating drum (2) is rotatably mounted. Above the rotating drum (2), the housing (1) has multiple feed pipes (3). Both ends of the rotating drum (2) are equipped with support pipes (4) rotatably connected to the housing (1). Outside the housing (1), a drive mechanism is connected to one of the support pipes (4). Inside the rotating drum (2), a mounting frame (8) is installed. Electromagnets (9) fixed to the mounting frame (8) are installed on the inner side and upper part of the rotating drum (2). The mounting frame (8) has a section extending from the support pipe (4) to the outside of the housing (1). A crossbeam (11) is fixedly connected to the box body (1). Inclined slides (13) are provided on both sides of the lower part of the rotating drum (2). A first feeding trough (14) is provided at the bottom of the inclined slide (13). A first discharge pipe (15) is connected to the end of the first feeding trough (14). A V-shaped groove (16) is provided at the lower end of the rotating drum (2). A second feeding trough (17) is provided in the middle of the V-shaped groove (16). A second discharge pipe (19) is connected to the end of the second feeding trough (17). A scraper (18) pressed against the bottom of the rotating drum (2) is provided inside the V-shaped groove (16).

2. The magnetic separator for silicon powder production as described in claim 1, characterized in that: The first feeding trough (14) and the second feeding trough (17) are each equipped with a pusher screw (20) that rotates within them. The housing (1) is equipped with a motor (21) that is connected to the corresponding pusher screw (20).

3. The magnetic separator for silicon powder production as described in claim 1, characterized in that: The rotating drum (2) has two limiting rings (12) on its side, and the limiting rings (12) correspond to the end positions of the electromagnet (9).

4. A magnetic separator for silicon powder production as described in claim 1, characterized in that: The drive mechanism includes an external gear ring (5), which is coaxially and fixedly connected to the support tube (4). A drive motor (6) is provided on the housing (1), and the drive motor (6) is provided with a gear (7) that meshes with the external gear ring (5).

5. A magnetic separator for silicon powder production as described in claim 1, characterized in that: The rotating drum (2) is made of aluminum alloy.

6. A magnetic separator for silicon powder production as described in claim 1, characterized in that: A cooling fan (10) is installed on the mounting bracket (8) inside the rotating drum (2).

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