An impurity removal device and method for silicon micropowder production

Abstract

The present invention belongs to the field of silicon micropowder production technology, and discloses an impurity removal device and method for silicon micropowder production, including a support frame, a protective shell and a control panel are installed on the front end surface of the support frame, a first slide slot and a second slide slot are symmetrically opened on the front and rear end surfaces of the support frame, a servo motor is fixedly installed on the inner wall of the protective shell, a first pulley is fixedly installed on the output shaft of the servo motor, a first belt is sleeved on the outer side of the first pulley, a conveying roller is installed on the side of the first pulley away from the protective shell, a conveying belt is sleeved on the outer side of the conveying roller, a storage bin, a vacuum cleaner, an adsorption mechanism and a vibration mechanism are installed above the conveying belt from right to left in sequence, and a feeding mechanism is installed on the inner wall of the storage bin. The present invention solves the problem that the existing device cannot turn over the silicon micropowder when removing iron filings from the silicon micropowder, resulting in only cleaning the surface of the silicon micropowder but not cleaning the iron filings on the bottom layer of the silicon micropowder.

Description

Technical Field

[0001] The invention relates to the technical field of silicon micropowder production, in particular to an impurity removal device and method for silicon micropowder production. Background Art

[0002] Silica powder is a non-toxic, odorless, pollution-free inorganic non-metallic material. Its main component is silicon dioxide. It is widely used in chemical industry, electronics, electrical appliances, plastics, coatings, advanced paints, rubber, and other fields because of its excellent properties such as good temperature resistance, acid and alkali corrosion resistance, high insulation, stable chemical properties, and high hardness. With the development of science and technology, some high-tech products also need to use polysilicon synthesized from silica powder, but at the same time, they also have higher requirements on the purity of silica powder.

[0003] The invention discloses an impurity removal device and method for silicon micropowder production, with publication number CN114589003B, comprising a support base, a self-unloading mechanism provided on the support base, an impurity removal mechanism provided on the self-unloading mechanism, and a cloud computing controller provided on the surface of the self-unloading mechanism.

[0004] When the device is cleaning magnetic impurities, it uses a rotating body with a magnetic coating to adsorb the impurities. It can only clean the surface of the silicon micropowder and cannot collect the iron filings on the bottom layer of the silicon micropowder. The impurities are not cleaned thoroughly, and the collected impurities are scratched on the magnetic coating with a scraper, which will reduce the service life of the magnetic coating. Summary of the invention

[0005] The purpose of the present invention is to provide an impurity removal device and method for silicon micropowder production, which solves the problem that the existing device cannot turn over the silicon micropowder when removing iron filings from the silicon micropowder, resulting in only cleaning the surface of the silicon micropowder but not cleaning the iron filings at the bottom of the silicon micropowder.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an impurity removal device for silicon micropowder production, comprising a support frame, a protective shell and a control panel are installed on the front end surface of the support frame, a first slide groove and a second slide groove are symmetrically opened on the front and rear end surfaces of the support frame, a servo motor is fixedly installed on the inner wall of the protective shell, a first pulley is fixedly installed on the output shaft of the servo motor, a first belt is sleeved on the outer side of the first pulley, a conveying roller is installed on the side of the first pulley away from the protective shell and passes through the support frame, a conveying belt is sleeved on the outer side of the conveying roller, a storage bin, a vacuum cleaner, an adsorption mechanism and a vibration mechanism are installed above the conveying belt from right to left in sequence, and a feeding mechanism is installed on the inner wall of the storage bin.

[0007] Preferably, the unloading mechanism includes a second belt, one end of the second belt is sleeved on the outer wall of the first pulley, and the other end of the second belt is sleeved on the inner wall of the second pulley, a second gear is installed on the side of the second pulley away from the protective shell, a second crushing roller is installed on the storage bin on the side of the second gear away from the second pulley, one side of the second gear is meshed with the first gear, and the first crushing roller is installed on the side of the first gear away from the protective shell and passes through the storage bin.

[0008] Preferably, the adsorption mechanism includes a shaking assembly and a cleaning assembly, and the shaking assembly includes a third pulley, wherein the lower end surface of the third pulley abuts on the first belt, and the third pulley passes through the support frame away from the protective shell and is installed with a first round rod, and a plurality of first eccentric wheels are installed on the outer wall of the first round rod at the same interval, and the upper end surface of the first eccentric wheel abuts on the first sliding bar, and the first sliding blocks are symmetrically installed at both ends of the first sliding bar, and the first sliding block is slidably installed in the second sliding groove, and the second round rod and two first springs are installed on the upper end surface of the first sliding bar, and the two first springs are symmetrically installed on both sides of the second round rod, and the upper end of the second round rod passes through the support frame and is installed with a rack, and the rack is slidably installed on the support frame through the third sliding groove opened on the support frame, and a third gear is meshed on one side of the rack, and the third gear passes through the support frame and is installed with a brush, and a fourth pulley is installed on the side of the third pulley facing the protective shell, and the third belt is sleeved on the outside of the fourth pulley.

[0009] Preferably, the cleaning assembly includes a collecting roller and a third round rod, the lower end surface of the collecting roller is symmetrically abutted against the second roller and the first roller respectively, the second roller is rotatably mounted on the outer wall of the support frame, the first roller is rotatably mounted on the outer wall of the support frame, a fifth pulley is mounted on the side of the first roller facing the protective shell, the fifth pulley is sleeved on the inner wall of the third belt, a plurality of support rods are symmetrically mounted on the inner wall of the collecting roller, a third round rod is rotatably mounted at the center position of the support rod, a magnet is mounted on the outer wall of the third round rod, support plates are fixedly and symmetrically mounted at both ends of the third round rod, and the support plates are fixedly mounted on the outer wall of the support frame.

[0010] Preferably, the vibration mechanism includes a seventh pulley and a magnetic roller, the lower end face of the seventh pulley abuts on the first belt, and a fifth round rod is installed on the support frame on the side of the seventh pulley away from the protective shell, and a plurality of second eccentric wheels are installed on the outer wall of the fifth round rod at the same interval, the upper end face of the second eccentric wheel abuts on the second sliding rod, and third sliding blocks are symmetrically installed at both ends of the second sliding rod, the third sliding block is slidably installed in the first sliding groove, and a fourth round rod and two second springs are installed on the upper end face of the third sliding block, and the two second springs are symmetrically installed on both sides of the fourth round rod, the upper end of the fourth round rod passes through the support frame, the lower end face of the second eccentric wheel abuts on the third sliding rod, and the second sliding blocks are symmetrically installed at both ends of the third sliding rod, and a sixth round rod and two third springs are installed on the lower end face of the second sliding block, and the two third springs are symmetrically installed on both sides of the sixth round rod.

[0011] Preferably, the outer wall of the magnetic roller is sleeved on the inner wall of the conveyor belt, the magnetic roller is rotatably installed on the inner wall of the support frame, and a sixth pulley is installed on the side of the magnetic roller facing the protective shell through the support frame, and the sixth pulley is sleeved on the inner wall of the first belt.

[0012] Preferably, the method for removing impurities for producing silicon micropowder comprises the following steps:

[0013] Step 1: Put the silicon micropowder into the storage bin, set the parameters through the control panel, and then control the servo motor to rotate. At this time, the silicon micropowder in the storage bin will be initially crushed by the feeding mechanism to prevent agglomeration, and the silicon micropowder will be evenly spread on the conveyor belt;

[0014] Step 2: When the silicon powder is transported by the conveyor belt, the shaking component makes it shake, and the collecting roller above the conveyor belt collects the iron filings, and then the cleaning component cleans the iron filings on the collecting roller, and finally they are collected by the vacuum cleaner;

[0015] Step 3: As the conveyor belt runs, the silicon micropowder after the initial impurity removal continues to be transported, and the vibration mechanism disperses it again. At this time, the qualified silicon micropowder is discharged, and the remaining iron filings will adhere to the conveyor belt. As the conveyor belt rotates, it falls into the collection box under the action of the vibration mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention sets a feeding structure. When work is needed, the servo motor rotates to drive the first crushing roller and the second crushing roller to crush the silicon micropowder in the storage bin to prevent agglomeration and wrapping of iron filings, which will cause incomplete subsequent impurity removal, and ensure that the silicon micropowder is evenly spread on the conveyor belt;

[0018] Second, the present invention provides an adsorption mechanism to make the silicon powder vibrate and roll when conveying, so that the collecting roller can adsorb the iron filings and impurities for the first time, and the brush can clean the collecting roller to prevent adhesion;

[0019] 3. The present invention sets a vibration mechanism. After the silicon micropowder on the conveyor belt is firstly cleaned, the second slide bar and the third slide bar of the vibration mechanism respectively vibrate the upper and lower parts of the conveyor belt. The silicon micropowder above the conveyor belt will be directly discharged. At the same time, the residual iron filings will be adsorbed on the conveyor belt by the magnetic roller. When the conveyor belt turns to the top of the collection box, the iron filings will naturally fall into the collection box. The adhered iron filings will also be vibrated into the collection box under the action of the third slide bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the present invention without the protective shell;

[0023] Figure 4 It is a schematic diagram of the material unloading mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the adsorption mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the vibration mechanism of the present invention.

[0026] In the figure: 1, support frame; 2, conveyor belt; 3, protective shell; 4, vacuum cleaner; 5, storage bin; 6, control panel; 7, conveyor roller; 8, first belt; 9, first chute; 10, second chute; 11, servo motor; 12, first pulley; 100, unloading mechanism; 200, adsorption mechanism; 300, vibration mechanism; 101, first gear; 102, first crushing roller; 103, second crushing roller; 104, second gear; 105, second pulley; 106, second belt; 201, collecting roller; 202, brush; 203, rack; 204, third chute; 205, first round rod; 206, first eccentric wheel; 207, first slide rod; 208, second round rod; 209 , first spring; 210, first slider; 211, third pulley; 212, fourth pulley; 213, third belt; 214, fifth pulley; 215, first roller; 216, support plate; 217, second roller; 218, third round rod; 219, support rod; 220, magnet; 221, third gear; 301, sixth pulley; 302, magnetic roller; 303, fourth round rod; 304, second spring; 305, second slide rod; 306, fifth round rod; 307, second slider; 308, second eccentric wheel; 309, third slide rod; 310, collection box; 311, sixth round rod; 312, third spring; 313, seventh pulley; 314, third slider. DETAILED DESCRIPTION

[0027] See also Figures 1 to 6 The present invention provides a technical solution: an impurity removal device for silicon micropowder production, comprising a support frame 1, a protective shell 3 and a control panel 6 are installed on the front end surface of the support frame 1, a first chute 9 and a second chute 10 are symmetrically opened on the front and rear ends of the support frame 1, a servo motor 11 is fixedly installed on the inner wall of the protective shell 3, a first belt pulley 12 is fixedly installed on the output shaft of the servo motor 11, a first belt 8 is sleeved on the outer side of the first belt pulley 12, a conveying roller 7 is installed on the side of the first belt pulley 12 away from the protective shell 3, a conveying belt 2 is sleeved on the outer side of the conveying roller 7, a storage bin 5, a dust collector 4, an adsorption mechanism 200 and a vibration mechanism 300 are installed above the conveying belt 2 from right to left, and a feeding mechanism 100 is installed on the inner wall of the storage bin 5;

[0028] The control panel 6 sets relevant parameters, the storage bin 5 stores silicon micropowder, and the conveyor belt 2 transports silicon micropowder;

[0029] Further, such as Figure 4As shown, the unloading mechanism 100 includes a second belt 106, one end of the second belt 106 is sleeved on the outer wall of the first pulley 12, and the other end of the second belt 106 is sleeved on the inner wall of the second belt 105, and the second gear 104 is installed on the side of the second pulley 105 away from the protective shell 3, and the second gear 104 is installed on the storage bin 5 on the side away from the second pulley 105, and the first gear 101 is meshed on one side of the second gear 104, and the first crushing roller 102 is installed on the side of the first gear 101 away from the protective shell 3 through the storage bin 5;

[0030] When the servo motor 11 rotates, it drives the first pulley 12 to rotate, the first pulley 12 drives the conveying roller 7 and the second belt 106 to rotate, the second belt 106 drives the second pulley 105 to rotate, the second pulley 105 drives the second gear 104 to rotate, the second gear 104 drives the second crushing roller 103 to rotate, because the first gear 101 and the second gear 104 are meshed with each other, the first gear 101 rotates, driving the first crushing roller 102 to rotate, at this time, the first crushing roller 102 and the second crushing roller 103 crush the silicon micropowder in the storage bin 5 and evenly spread it on the conveyor belt 2 to prevent agglomeration and wrapping of iron filings and impurities, so that the cleaning is not thorough;

[0031] Further, such as Figure 5As shown, the adsorption mechanism 200 includes a shaking component and a cleaning component, the shaking component includes a third pulley 211, the lower end surface of the third pulley 211 abuts on the first belt 8, the third pulley 211 is away from the protective shell 3 and penetrates the support frame 1 to install a first round rod 205, a plurality of first eccentric wheels 206 are installed on the outer wall of the first round rod 205 at the same interval, the upper end surface of the first eccentric wheel 206 abuts against the first slide bar 207, and the first slide bar 207 is symmetrically installed with first sliders 210 at both ends. The first slider 210 is slidably installed in the second slide groove 10, and the upper end surface of the first slider 210 is installed with a second round rod 208 and two first springs 209, and the two first springs 209 are symmetrically installed on both sides of the second round rod 208. The upper end of the second round rod 208 penetrates the support frame 1 and is installed with a rack 203. The rack 203 is slidably installed on the support frame 1 through a third slide groove 204 provided on the support frame 1. One side of the rack 203 is meshed with a third gear 221, and the third gear 221 penetrates the support frame 1 and is installed with The brush 202, the third pulley 211 is installed with a fourth pulley 212 on the side facing the protective shell 3, the fourth pulley 212 is sleeved with a third belt 213, the cleaning assembly includes a collecting roller 201 and a third round rod 218, the lower end surface of the collecting roller 201 is symmetrically abutted with a second roller 217 and a first roller 215, the second roller 217 is rotatably mounted on the outer wall of the support frame 1, the first roller 215 is rotatably mounted on the outer wall of the support frame 1, and the first roller 215 is rotatably mounted on the outer wall of the support frame 1. A fifth pulley 214 is installed on the side, and the fifth pulley 214 is sleeved on the inner wall of the third belt 213. A plurality of support rods 219 are symmetrically installed on the inner wall of the collecting roller 201. A third round rod 218 is rotatably installed at the center of the support rod 219. A magnet 220 is installed on the outer wall of the third round rod 218. Support plates 216 are fixedly and symmetrically installed at both ends of the third round rod 218. The support plates 216 are fixedly installed on the outer wall of the support frame 1. The first pulley 12 is twice the size of the third pulley 211.

[0032] When the first pulley 12 rotates, it drives the first belt 8 to rotate, and the first belt 8 drives the third pulley 211 to rotate. Since the first pulley 12 is twice the size of the third pulley 211, the speed of the third pulley 211 becomes faster, and the third pulley 211 drives the first round rod 205 to rotate, and the first round rod 205 drives the first eccentric wheel 206 to rotate. When the raised part of the first eccentric wheel 206 squeezes the first slide bar 207, the first slide bar 207 pushes the conveyor belt 2 upward, and the first slide bar 207 drives the first slider 210 to squeeze the first spring 209 and the second round rod 20 8. The second round rod 208 drives the rack 203 to rise. Since the third gear 221 is meshed with the rack 203, the third gear 221 drives the brush 202 to rotate. When the protruding portion of the first eccentric wheel 206 is not in contact with the first slide bar 207, the first spring 209 extends to drive the first slider 210 to descend. The first slider 210 drives the rack 203 to descend through the second round rod 208. At this time, the third gear 221 drives the brush 202 to rotate in the opposite direction. With the up and down movement of the first slide bar 207, the silicon powder on the conveyor belt 2 can be vibrated and rolled to make impurities leak out.

[0033] The third pulley 211 rotates and drives the fourth pulley 212 to rotate at the same time. The fourth pulley 212 drives the fifth pulley 214 to rotate through the third belt 213. The fifth pulley 214 drives the first roller 215. The first roller 215 drives the collecting roller 201 to rotate. Due to the magnet 220, the iron filings inside the silicon powder on the conveyor belt 2 will be adsorbed. When the collecting roller 201 rotates to a position without the magnet 220, the vacuum cleaner 4 collects it. At the same time, the brush 202 cleans the collecting roller 201 to prevent impurities from sticking to the collecting roller 201.

[0034] Further, such as Figure 6As shown, the vibration mechanism 300 includes a seventh pulley 313 and a magnetic roller 302, the lower end surface of the seventh pulley 313 abuts on the first belt 8, the seventh pulley 313 is away from the protective shell 3 and penetrates the support frame 1 to install a fifth round rod 306, a plurality of second eccentric wheels 308 are installed on the outer wall of the fifth round rod 306 at the same interval, the upper end surface of the second eccentric wheel 308 abuts against the second slide bar 305, and the second slide bars 305 are symmetrically installed with third sliders 314 at both ends, the third slider 314 is slidably installed in the first slide groove 9, the upper end surface of the third slider 314 is installed with a fourth round rod 303 and two second springs 304, and the two second springs 304 are symmetrically installed on both sides of the fourth round rod 303, the upper end of the fourth round rod 303 penetrates the support frame 1, and the second slider 314 is symmetrically installed at both ends of the second slide bar 305. The lower end surface of the second eccentric wheel 308 is in contact with the third slide bar 309, and the second slide bars 307 are symmetrically installed at both ends of the third slide bar 309, and the lower end surface of the second slide bar 307 is installed with a sixth round rod 311 and two third springs 312, and the two third springs 312 are symmetrically installed on both sides of the sixth round rod 311, the outer wall of the magnetic roller 302 is sleeved on the inner wall of the conveyor belt 2, the magnetic roller 302 is rotatably installed on the inner wall of the support frame 1, and the magnetic roller 302 passes through the support frame 1 toward the side of the protective shell 3, and the sixth pulley 301 is sleeved on the inner wall of the first belt 8; the sixth pulley 301 is the same size as the first pulley 12, the seventh pulley 313 is the same size as the third pulley 211, and a collection box 310 is installed on the inner wall of the support frame 1;

[0035] When the first belt 8 rotates, the seventh pulley 313 and the sixth pulley 301 are driven to rotate, the seventh pulley 313 drives the fifth round rod 306 to rotate, the fifth round rod 306 drives the second eccentric wheel 308 to rotate, when the second eccentric wheel 308 rotates and the convex part squeezes the second slide bar 305, the second slide bar 305 pushes the conveyor belt 2 upward, and the second slide bar 305 drives the third slide bar 314 to squeeze the second spring 304 and the fourth round rod 303, at this time, the third spring 312 drives the third slide bar 309 to abut against the lower end surface of the second eccentric wheel 308 through the second slide bar 307, when the convex part of the second eccentric wheel 308 is not in contact with the first slide bar 207, the first spring 209 extends, driving the first slide bar 210 The first slider 210 drives the rack 203 to descend through the second round rod 208. At this time, the raised part of the second eccentric wheel 308 squeezes the third slider 309, and the third slider 309 lifts the conveyor belt 2 downward, and the third slider 309 drives the second slider 307 to squeeze the third spring 312 and the sixth round rod 311. As the seventh pulley 313 rotates, the silicon micropowder on the conveyor belt 2 vibrates and rolls again. At this time, the magnetic roller 302 absorbs the iron filings again, so that the iron filings stick to the conveyor belt 2. When it rotates to the collection box 310 below, since the magnetic roller 302 no longer absorbs, some iron filings fall off naturally, and the iron filings stuck to the conveyor belt 2 will be vibrated and fall off by the third slider 309 to prevent adhesion.

Claims

1. An impurity removal device for silicon micropowder production, comprising a support frame (1), characterized in that: The front end surface of the support frame (1) is provided with a protective shell (3) and a control panel (6); the front and rear end surfaces of the support frame (1) are symmetrically provided with a first slide groove (9) and a second slide groove (10); a servo motor (11) is fixedly provided on the inner wall of the protective shell (3); a first belt pulley (12) is fixedly provided on the output shaft of the servo motor (11); a first belt (8) is sleeved on the outer side of the first belt pulley (12); a conveying roller (7) is installed on the side of the first belt pulley (12) away from the protective shell (3) and passing through the support frame (1); a conveying belt (2) is sleeved on the outer side of the conveying roller (7); a storage bin (5), a dust collector (4), an adsorption mechanism (200) and a vibration mechanism (300) are installed above the conveying belt (2) in sequence from right to left; a material unloading mechanism (100) is installed on the inner wall of the storage bin (5); The vibration mechanism (300) comprises a seventh pulley (313) and a magnetic roller (302), the lower end face of the seventh pulley (313) abuts against the first belt (8), a fifth round rod (306) is installed on the side of the seventh pulley (313) away from the protective shell (3) and penetrating the support frame (1), a plurality of second eccentric wheels (308) are installed at the same interval on the outer wall of the fifth round rod (306), the upper end face of the second eccentric wheel (308) abuts against the second sliding rod (305), the two ends of the second sliding rod (305) are symmetrically installed with third sliding blocks (314), and the third sliding block (314) is slidably installed in the first sliding groove (9 ), a fourth round rod (303) and two second springs (304) are installed on the upper end surface of the third slider (314), and the two second springs (304) are symmetrically installed on both sides of the fourth round rod (303), the upper end of the fourth round rod (303) passes through the support frame (1), the lower end surface of the second eccentric wheel (308) is abutted against the third sliding rod (309), the two ends of the third sliding rod (309) are symmetrically installed with second sliders (307), the lower end surface of the second slider (307) is installed with a sixth round rod (311) and two third springs (312), and the two third springs (312) are symmetrically installed on both sides of the sixth round rod (311); The outer wall of the magnetic roller (302) is sleeved on the inner wall of the conveyor belt (2), and the magnetic roller (302) is rotatably mounted on the inner wall of the support frame (1). A sixth pulley (301) is installed on the side of the magnetic roller (302) that passes through the support frame (1) toward the protective shell (3), and the sixth pulley (301) is sleeved on the inner wall of the first belt (8).

2. The impurity removal device for silicon micropowder production according to claim 1, characterized in that: The unloading mechanism (100) comprises a second belt (106), one end of the second belt (106) is sleeved on the outer wall of the first pulley (12), the other end of the second belt (106) is sleeved on the inner wall of the second pulley (105), a second gear (104) is installed on the side of the second pulley (105) away from the protective shell (3), a second crushing roller (103) is installed on the storage bin (5) on the side of the second gear (104) away from the second pulley (105), a first gear (101) is meshed on one side of the second gear (104), and a first crushing roller (102) is installed on the side of the first gear (101) away from the protective shell (3) and penetrating through the storage bin (5).

3. The impurity removal device for silicon micropowder production according to claim 1, characterized in that: The adsorption mechanism (200) includes a shaking component and a cleaning component, the shaking component includes a third pulley (211), the lower end face of the third pulley (211) is abutted against the first belt (8), the third pulley (211) is away from the protective shell (3) and penetrates the support frame (1) to install a first round rod (205), a plurality of first eccentric wheels (206) are installed at the same interval on the outer wall of the first round rod (205), the upper end face of the first eccentric wheel (206) is abutted against a first sliding rod (207), the first sliding rod (210) is symmetrically installed at both ends of the first sliding rod (207), the first sliding rod (210) is slidably installed in the second sliding groove (10), and the upper end face of the first sliding rod (210) is installed A second round rod (208) and two first springs (209) are provided, and the two first springs (209) are symmetrically installed on both sides of the second round rod (208); the upper end of the second round rod (208) passes through the support frame (1) and is installed with a rack (203); the rack (203) is slidably installed on the support frame (1) through a third slide groove (204) provided on the support frame (1); one side of the rack (203) is meshed with a third gear (221); the third gear (221) passes through the support frame (1) and is installed with a brush (202); the third pulley (211) is installed with a fourth pulley (212) on the side facing the protective shell (3); and the fourth pulley (212) is sleeved with a third belt (213) on its outer side.

4. The impurity removal device for silicon micropowder production according to claim 3, characterized in that: The cleaning assembly comprises a collecting roller (201) and a third round rod (218); the lower end surface of the collecting roller (201) is symmetrically abutted against a second roller (217) and a first roller (215); the second roller (217) is rotatably mounted on the outer wall of the support frame (1); the first roller (215) is rotatably mounted on the outer wall of the support frame (1); a fifth pulley (214) is mounted on the side of the first roller (215) facing the protective shell (3); the fifth pulley (214) is The pulley (214) is sleeved on the inner wall of the third belt (213); a plurality of support rods (219) are symmetrically mounted on the inner wall of the collecting roller (201); a third round rod (218) is rotatably mounted at the center of the support rod (219); a magnet (220) is mounted on the outer wall of the third round rod (218); support plates (216) are fixedly and symmetrically mounted at both ends of the third round rod (218); and the support plates (216) are fixedly mounted on the outer wall of the support frame (1).

5. A method for removing impurities for silicon micropowder production, using the impurity removal device for silicon micropowder production according to claim 1, characterized in that: The following steps are involved: The first step is to put the silicon micropowder into the storage bin (5), set the parameters through the control panel (6), and then control the servo motor (11) to rotate. At this time, the silicon micropowder in the storage bin (5) will be initially crushed by the unloading mechanism (100) to prevent agglomeration, and the silicon micropowder will be evenly spread on the conveyor belt (2); Step 2: When the silicon micropowder is transported by the conveyor belt (2), the shaking component causes it to shake, and the collecting roller (201) above the conveyor belt (2) collects the iron filings, and then the cleaning component cleans the iron filings on the collecting roller (201), and finally the iron filings are collected by the vacuum cleaner (4); Step 3: As the conveyor belt (2) rotates, the silicon micropowder after the initial impurity removal continues to be conveyed, and the vibration mechanism (300) causes it to be dispersed again. At this time, qualified silicon micropowder is discharged, and the remaining iron filings will adhere to the conveyor belt (2), and as the conveyor belt (2) rotates, they fall into the collection box (310) under the action of the vibration mechanism (300).

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