Crushing device for silicon production

Abstract

The utility model relates to the technical field of silicon production, in particular to a crushing device for silicon production, which comprises a box body and a crushing box communicated with the right side of the upper end of the box body. Two electric crushing rollers are mounted in the crushing box, a suction pump is fixed outside the crushing box, an air suction port of the suction pump is communicated with a suction pipe, the end part of the suction pipe penetrates into the crushing box, a plurality of suction hoods communicated with the suction pipe are arranged above the electric crushing rollers, an air outlet of the suction pump is communicated with a discharge pipe, and the end part of the discharge pipe penetrates into the box body; a screen plate is installed in the box body, and a material returning assembly is arranged outside the box body. According to the silicon powder crushing device, the suction pump works and is combined with the suction cover to absorb silicon powder generated during crushing, the silicon powder is prevented from flying upwards and floating out of the device, and the absorbed silicon powder can be directly discharged into the box body to be collected, so that the situation that waste is generated due to the fact that the silicon powder is blown upwards is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon production, in particular to a crushing device for silicon production. Background Art

[0002] Silicon is a chemical element, its chemical symbol is Si, formerly known as silicon. Atomic number 14, relative atomic mass 28.09, there are two allotropes of amorphous and crystalline, allotropes are amorphous silicon and crystalline silicon. Belonging to the metalloid element of IVA group on the periodic table, ferrosilicon is a raw material in the production process of flux, the general raw material is 30 to 50 cm block, in order to meet the use and ensure product quality, it often needs to be further crushed.

[0003] For example, Chinese patent application No. 202222885685.5 discloses a ferrosilicon crushing and screening device, including a working box, a main crushing roller and a slave crushing roller, both of which are arranged in the working box, a fixed box is arranged on one side of the working box, a first motor, a main gear and a slave gear are arranged in the fixed box, the main crushing roller passes through the working box and is connected to the output shaft of the first motor, the main gear is sleeved on the main crushing roller, the slave gear is sleeved on the slave crushing roller, the main gear is meshed with the slave gear, a moving mechanism is arranged at the bottom of the working box, a connecting plate is fixedly connected to the top of the moving mechanism, the side of the connecting plate is slidably connected to the guide groove opened inside the working box, the two sides of the connecting plate are fixedly connected to the screening net, and the two sides of the working box are provided with waste openings. The utility model is provided with waste openings on both sides of the two screening nets, which improves the discharge efficiency and prevents blockage.

[0004] By reviewing the above comparative documents, it can be seen that the prior art still has the following deficiencies. Since a large amount of silicon powder will be generated during the crushing process of silicon blocks, the silicon powder will float upwards, and even most of the silicon powder will float out of the device, which will easily cause serious waste of silicon powder. Moreover, after the silicon blocks are crushed and sifted through the screen, the unbroken and qualified silicon blocks remaining on the screen are directly discharged, and the unbroken and qualified silicon blocks cannot be crushed again in time. If the silicon blocks need to be crushed to a qualified state, it is necessary to manually collect the unbroken and qualified silicon blocks for crushing repeatedly. The operation is relatively cumbersome and troublesome, and will also affect the crushing efficiency. Utility Model Content

[0005] The utility model provides a crushing device for silicon production, which is beneficial to reducing the waste of silicon powder due to flying, and is beneficial to quickly and conveniently crushing unqualified silicon blocks again.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A crushing device for silicon production, comprising a box body and a crushing box, wherein the crushing box is connected to the right side of the upper end of the box body;

[0008] Two electric crushing rollers are installed in the crushing box, a suction pump is fixed outside the crushing box, the suction port of the suction pump is connected with a suction pipe, the end of the suction pipe penetrates into the crushing box, a plurality of suction hoods connected with the suction pipe are arranged above the electric crushing roller, the air outlet of the suction pump is connected with a discharge pipe, the end of the discharge pipe penetrates into the box body;

[0009] A screen plate is installed inside the box, and a material return assembly is arranged outside the box.

[0010] Furthermore, the suction hoods are all located in the crushing box, and the openings of the suction hoods are all arranged downward.

[0011] Furthermore, an elastic spacer strip is connected between the outer wall of the screen plate and the inner wall of the box body, and the screen plate is arranged at an angle.

[0012] Furthermore, electric vibrators are fixed to the left and right ends of the inner wall of the box body, and the lower ends of the screen plates are connected to the power ends of the electric vibrators.

[0013] Furthermore, the return material assembly includes a discharge pipe, a feeding barrel, a motor, a feeding shaft, a spiral feeding blade and a return material pipe. The discharge pipe is connected to the left side of the box body, and the screen plate extends to the left into the discharge pipe.

[0014] Furthermore, the feeding barrel is connected to the left end of the discharge pipe, the motor is fixed to the lower end of the feeding barrel, the feeding shaft is connected to the power end of the motor, the feeding shaft rotates upward and passes through the feeding barrel, and the spiral feeding blades are provided with several blocks and are all fixed to the outer periphery of the feeding shaft.

[0015] Furthermore, the return pipe is connected to the upper end of the upper barrel, the right end of the return pipe is connected to the left side of the crushing box, and the connection point between the return pipe and the crushing box is located between the electric crushing roller and the suction hood.

[0016] Furthermore, the lower end of the box is connected to a discharge valve.

[0017] Beneficial effects of the utility model:

[0018] 1. When the silicon blocks are crushed by the electric crushing roller, the suction pump works in combination with the suction hood to absorb the silicon powder generated during the crushing, preventing the silicon powder from rising and floating out of the device. The absorbed silicon powder can be directly discharged into the box for collection, thus helping to reduce the waste of silicon powder due to rising;

[0019] 2. The screen plate is used to screen the crushed silicon, and the unqualified silicon will be automatically discharged into the crushing box through the return component for further crushing, so as to achieve the effect of cyclic crushing of silicon blocks. There is no need for manual collection and crushing repeatedly, which is conducive to the quick and convenient re-crushing of unqualified silicon blocks, thereby achieving the effect of automatic collection and cyclic crushing, and effectively improving the efficiency of silicon block crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the crushing box structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the crushing box structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the top view structure of the screen plate of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the material return assembly of the utility model.

[0025] Description of reference numerals:

[0026] Box body 1, crushing box 2, electric crushing roller 3, screen plate 4, suction pump 5, suction pipe 6, discharge pipe 7, suction hood 8, discharge pipe 9, feeding barrel 10, return pipe 11, motor 12, feeding shaft 13, spiral feeding blade 14, elastic spacer 15, electric vibrator 16, discharge valve 17. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0028] like Figure 1 , 2 As shown, in this embodiment, it includes a box body 1 and a crushing box 2, the crushing box 2 is connected to the right side of the upper end of the box body 1, two electric crushing rollers 3 are installed in the crushing box 1, a suction pump 5 is fixed outside the crushing box 2, the air intake of the suction pump 5 is connected to a suction pipe 6, the end of the suction pipe 6 passes through the crushing box 2, and a plurality of suction hoods 8 connected to the suction pipe 6 are arranged above the electric crushing roller 3, the air outlet of the suction pump 5 is connected to a discharge pipe 7, the end of the discharge pipe 7 passes through the box body 1, the suction hoods 8 are all located in the crushing box 2, and the openings of the suction hoods 8 are all set downward.

[0029] When the silicon blocks are crushed by the crushing device, the silicon blocks are added into the crushing box 2, and the silicon blocks are crushed under the premise of the operation of the electric crushing roller 3. When silicon powder is generated by crushing, the suction pump 5 is started in advance, and then the rising silicon powder is absorbed into the suction pipe 6 through the suction hood 8, and then the silicon powder is discharged into the box 1 for collection through the discharge pipe 7. In summary, the silicon powder generated during crushing is absorbed by the operation of the suction pump 5 and the suction hood 8, so as to prevent the silicon powder from rising and floating out of the device, and the absorbed silicon powder can be directly discharged into the box 1 for collection, thereby helping to reduce the waste of silicon powder due to rising.

[0030] like Figure 1 , 3 As shown in Figure 4, in this embodiment, a screen plate 4 is installed in the box body 1, and an elastic partition strip 15 is connected between the outer wall of the screen plate 4 and the inner wall of the box body 1. The screen plate 4 is arranged at an angle, and electric vibrators 16 are fixed to the left and right ends of the inner wall of the box body 1. The lower end of the screen plate 4 is connected to the power end of the electric vibrator 16, and the lower end of the box body 1 is connected to a discharge valve 17.

[0031] When the silicon blocks are broken, they will fall into the box 1, and the broken silicon blocks will fall on the screen plate 4. The electric vibrator 16 will drive the screen plate 4 to shake, which is conducive to quickly screening the broken silicon blocks through the screen plate 4, and an elastic partition 15 is installed between the outer periphery of the screen plate 4 and the inner wall of the box 1. The elastic partition 15 is used to block the gap between the outer periphery of the screen plate 4 and the inner wall of the box 1 to prevent the unscreened silicon blocks from directly leaking from the gap. After the screen plate 4 screens the silicon blocks, the qualified silicon blocks are screened to the bottom of the box 1 through the screen plate 4. When the qualified silicon blocks need to be discharged from the device, the discharge valve 17 can be opened to conveniently discharge and collect the qualified silicon blocks.

[0032] like Figure 1 , 5 As shown, in this embodiment, a return material assembly is provided outside the box body 1, and the return material assembly includes a discharge pipe 9, a loading barrel 10, a motor 12, a loading shaft 13, a spiral loading blade 14 and a return material pipe 11. The discharge pipe 9 is connected to the left side of the box body 1, and the screen plate 4 extends to the left into the discharge pipe 9, and the loading barrel 10 is connected to the left end of the discharge pipe 9. The motor 12 is fixed to the lower end of the loading barrel 10, and the loading shaft 13 is connected to the power end of the motor 12. The loading shaft 13 rotates upward and passes through the loading barrel 10. The spiral loading blade 14 is provided with a plurality of pieces and is fixed on the periphery of the loading shaft 13. The return material pipe 11 is connected to the upper end of the loading barrel 10, and the right end of the return material pipe 11 is connected to the left side of the crushing box 2. The connection between the return material pipe 11 and the crushing box 2 is located between the electric crushing roller 3 and the suction hood 8.

[0033] Since the screen plate 4 is inclined, the unqualified silicon blocks will slide into the discharge pipe 9 along the inclined surface of the screen plate 4, and the discharge pipe 9 will discharge the unqualified silicon blocks into the loading barrel 10. At this time, the feeding shaft 13 and the spiral feeding blade 14 are driven to rotate by the operation of the motor 12, and then the operation of the spiral feeding blade 14 is conducive to transporting the unqualified silicon blocks upward into the return pipe 11, and then the return pipe 11 discharges the unqualified silicon blocks into the crushing box 2, and the electric crushing roller 3 is used to crush the unqualified silicon blocks again. In summary, in this reciprocating manner, the unqualified silicon is automatically discharged into the crushing box 2 through the return material component for further crushing, so as to achieve the effect of cyclic crushing of the silicon blocks, without the need for manual repeated collection and crushing, which is conducive to quickly and conveniently crushing the unqualified silicon blocks again, thereby achieving the effect of automatic collection and cyclic crushing, and effectively improving the efficiency of silicon block crushing.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] The above embodiments are preferred implementation schemes of the present invention. In addition, other implementation schemes are also included. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A crushing device for silicon production, comprising a box (1) and a crushing box (2), wherein the crushing box (2) is connected to the right side of the upper end of the box (1), characterized in that: Two electric crushing rollers (3) are installed in the crushing box (2); a suction pump (5) is fixed outside the crushing box (2); the suction port of the suction pump (5) is connected to a suction pipe (6); the end of the suction pipe (6) penetrates into the crushing box (2); a plurality of suction hoods (8) connected to the suction pipe (6) are arranged above the electric crushing roller (3); the air outlet of the suction pump (5) is connected to a discharge pipe (7); the end of the discharge pipe (7) penetrates into the box body (1); A screen plate (4) is installed inside the box body (1), and a material return assembly is provided outside the box body (1).

2. A crushing device for silicon production as claimed in claim 1, characterized in that: The suction hoods (8) are all located inside the crushing box (2), and the openings of the suction hoods (8) are all arranged downward.

3. A crushing device for silicon production as claimed in claim 1, characterized in that: An elastic spacer strip (15) is connected between the outer wall of the screen plate (4) and the inner wall of the box body (1), and the screen plate (4) is arranged in an inclined manner.

4. A crushing device for silicon production as claimed in claim 1, characterized in that: Electric vibrators (16) are fixed to the left and right ends of the inner wall of the box body (1), and the lower ends of the screen plates (4) are connected to the power ends of the electric vibrators (16).

5. A crushing device for silicon production as claimed in claim 1, characterized in that: The return material assembly comprises a discharge pipe (9), a feeding cylinder (10), a motor (12), a feeding shaft (13), a spiral feeding blade (14) and a return material pipe (11); the discharge pipe (9) is connected to the left side of the box body (1), and the screen plate (4) extends to the left into the discharge pipe (9).

6. A crushing device for silicon production as claimed in claim 5, characterized in that: The loading barrel (10) is connected to the left end of the discharge pipe (9), the motor (12) is fixed to the lower end of the loading barrel (10), the loading shaft (13) is connected to the power end of the motor (12), the loading shaft (13) rotates upward and penetrates into the loading barrel (10), and the spiral loading blades (14) are provided with a plurality of pieces and are all fixed to the outer periphery of the loading shaft (13).

7. A crushing device for silicon production as claimed in claim 5, characterized in that: The return pipe (11) is connected to the upper end of the upper barrel (10), the right end of the return pipe (11) is connected to the left side of the crushing box (2), and the connection point between the return pipe (11) and the crushing box (2) is located between the electric crushing roller (3) and the suction hood (8).

8. A crushing device for silicon production as claimed in claim 1, characterized in that: The lower end of the box body (1) is connected to a discharge valve (17).

Images