High-boiling cracking device for efficient and uniform reaction of polycrystalline silicon

Abstract

The utility model relates to the technical field of polycrystalline silicon, in particular to a high-boiling cracking device for efficient and uniform reaction of polycrystalline silicon, which comprises a shell, a mixing component and a driving motor, wherein the mixing component comprises a filter plate arranged in the shell, two hole grooves are formed in the inner wall of the shell, the driving motor is arranged outside the shell, and a screw rod is arranged at the output end of the driving motor; the other end of the lead screw extends into one sliding groove, a sliding rod is arranged in the other sliding groove, sliding blocks are arranged in the two sliding grooves, a fixing plate is arranged in the centers of the two sliding blocks, two limiting blocks are arranged at the bottom of the fixing plate, a sweeping brush is arranged at the bottom of the fixing plate, and an auxiliary groove and a cavity are formed in the shell. A second motor is arranged in the cavity, a screw is arranged at the output end of the second motor, the other end of the screw extends into the additive groove, a connecting rod is arranged on the outer wall of the screw, and a plurality of dispersing rods are arranged at the bottom of the connecting rod. According to the utility model, the polycrystalline silicon can uniformly disperse and fall into the additive tank, so that the polycrystalline silicon and the high-boiling additive can uniformly react, and the reaction effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polysilicon, in particular to a high-boiling cracking device for high-efficiency and uniform reaction of polysilicon. Background Art

[0002] Polycrystalline silicon is a form of elemental silicon. When molten elemental silicon solidifies under supercooling conditions, silicon atoms are arranged in a diamond lattice to form many crystal nuclei. If these crystal nuclei grow into grains with different crystal plane orientations, these grains will combine and crystallize into polycrystalline silicon. Utilization value: The development trend of solar cells can be seen from the current development process of international solar cells.

[0003] According to the patent document with application number CN202221543021.4, a polysilicon high-boiling material cracking device includes a mixer, a reaction distillation tower unit and a high-boiling agent regeneration unit; the high-boiling agent regeneration unit is connected to the bottom of the reaction distillation tower unit, and the mixer is connected to the reaction distillation tower unit and the high-boiling agent regeneration unit through pipelines; the high-boiling agent precipitated at the bottom of the reaction distillation tower unit enters the high-boiling agent regeneration unit for activation, and is mixed with the high-boiling material in the mixer, and then enters the reaction distillation tower unit for reaction. It can effectively improve the effective utilization rate of high-boiling agents, reduce the serious problem of high-boiling agent waste, reduce the input amount of high-boiling agents, and reduce production costs.

[0004] The polysilicon high-boiling-agent cracking device in the above patent can effectively improve the effective utilization rate of high-boiling-agent, reduce the serious problem of high-boiling-agent waste, reduce the input amount of high-boiling-agent, and reduce production costs. Polysilicon is mixed with high-boiling-agent before cracking to improve the cracking effect of polysilicon, but the previous reactor usually directly puts polysilicon into the high-boiling-agent solution, resulting in insufficient mixing reaction, thereby reducing the reaction effect of the high-boiling-agent and polysilicon. Summary of the invention

[0005] The utility model aims to provide a high boiling point cracking device for efficient and uniform reaction of polysilicon, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-boiling cracking device for efficient and uniform reaction of polysilicon, comprising a shell, wherein a mixing assembly for fully mixing polysilicon with a high-boiling auxiliary agent is arranged inside the shell, the mixing assembly comprises a filter plate arranged inside the shell, the inner wall of the filter plate is provided with two slide grooves, the inner wall of the shell is provided with two hole grooves, a driving motor is arranged outside the shell, a screw is arranged at the output end of the driving motor, the other end of the screw rod extends to the inside of one of the slide grooves, a sliding rod is arranged inside the other slide groove, sliders are arranged inside the two slide grooves, a fixed plate is arranged at the center of the two sliders, two limit blocks are arranged at the bottom of the fixed plate, a sweeping brush is arranged at the bottom of the fixed plate, an auxiliary agent groove and a cavity are arranged inside the shell, a second motor is arranged inside the cavity, a screw is arranged at the output end of the second motor, the other end of the screw extends into the auxiliary agent groove, a connecting rod is arranged on the outer wall of the screw, and a plurality of dispersion rods are arranged at the bottom of the connecting rod.

[0008] As a preferred solution of the utility model, the filter plate is embedded and connected to the inside of the shell by bolts, the drive motor is connected to the outside of the shell by bolts, the output end of the drive motor is connected to the screw rod through a coupling, the other end of the screw rod is connected to the inner wall of one of the hole grooves through a bearing, and both ends of the sliding rod are connected to the inner wall of the other hole groove by bolts.

[0009] As a preferred solution of the utility model, the screw rod and the slide rod both penetrate the slider and contact the inner wall of the slider, and the slider is slidably connected to the inner wall of the hole groove through a slide rail.

[0010] As a preferred solution of the utility model, the fixed plate is connected to the slider by welding, the two limit blocks are integrally formed with the fixed plate, the two limit blocks are slidably connected to the inner wall of the slide groove, the sweeping brush is connected to the fixed plate by bolts, and the sweeping brush is in contact with the surface of the filter plate.

[0011] As a preferred solution of the utility model, the second motor is connected to the inner wall of the cavity by bolts, the output end of the second motor is connected to a screw rod by a coupling, and the other end of the screw rod extends into the additive tank.

[0012] As a preferred solution of the utility model, the connecting rod is coaxially connected to the outer wall of the screw, and the plurality of dispersion rods are connected to the bottom of the connecting rod by welding, and the plurality of dispersion rods are in contact with the inner wall of the additive groove at one end away from the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: in response to the problems raised in the background technology, the present application adopts a mixing component, blocks the polysilicon raw material through a filter plate, so that the polysilicon raw material is pre-stored on the filter plate, and then the polysilicon is evenly dropped into the auxiliary agent tank below through the filter holes of the filter plate, and at the same time, the fixed plate and the sweeping brush are driven back and forth on the filter plate by a driving motor to evenly sweep the polysilicon to the filter holes and drop into the auxiliary agent tank; at the same time, the polysilicon entering the auxiliary agent tank is rotated in the auxiliary agent tank by a connecting rod to drive the dispersion rod to disperse the polysilicon in the auxiliary agent tank, so that the polysilicon and the high-boiling auxiliary agent can react evenly, thereby improving the reaction effect. The utility model can make the polysilicon evenly dispersed and fall into the auxiliary agent tank, so that the polysilicon and the high-boiling auxiliary agent can react evenly, thereby improving the reaction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the housing of the utility model;

[0016] Figure 3 This is the structure diagram of the filter plate of the utility model;

[0017] Figure 4 This is a cross-sectional view of the hole groove of the utility model;

[0018] Figure 5 This is a structural diagram of the fixed plate of the utility model.

[0019] In the figure: 1. shell; 2. filter plate; 201. slide groove; 3. hole groove; 4. drive motor; 401. screw rod; 402. slide rod; 5. slider; 6. fixed plate; 601. limit block; 602. sweeping brush; 7. additive groove; 8. cavity; 9. second motor; 901. screw rod; 902. connecting rod; 903. dispersion rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings below. Several embodiments of the utility model are given. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0024] See also Figure 1-5The utility model provides a technical solution: a high-boiling cracking device for efficient and uniform reaction of polysilicon, comprising a shell 1, wherein a mixing assembly for fully mixing polysilicon with a high-boiling auxiliary agent is arranged inside the shell 1, wherein the mixing assembly comprises a filter plate 2 arranged inside the shell 1, which is used to block and pre-store the polysilicon raw material transported to the reactor, wherein the inner wall of the filter plate 2 is provided with two slide grooves 201, and the inner wall of the shell 1 is provided with two hole grooves 3, and the outer wall of the shell 1 is provided with a driving motor 4 for controlling the rotation of a screw rod 401, and the output end of the driving motor 4 is provided with a screw rod 401, and the outer wall texture of the screw rod 401 matches the inner wall of a slider 5, so that when the screw rod 401 rotates, the slider 5 can be driven to slide in the hole groove 3, and the other end of the screw rod 401 extends to the inside of one of the slide grooves 201, and the other slide groove 201 is provided with a sliding rod 402, which is used to limit the movement of the slider 5 and the fixed plate 6, and the two slide grooves 201 are provided with sliders 5, and the two A fixed plate 6 is arranged at the center of each of the sliders 5, and two limit blocks 601 are arranged at the bottom of the fixed plate 6 for limiting the position of the fixed plate 6 when it moves. The filter plate 2 is embedded in the housing 1, and the chute 201 of the filter plate 2 extends into the housing 1, thereby preventing the polysilicon raw material from entering the chute 201. A sweeping brush 602 is arranged at the bottom of the fixed plate 6, which is a soft brush, so that the polysilicon on the filter plate 2 can be evenly swept into the filter hole and fall. The inside of the housing 1 is provided with an auxiliary agent groove 7 and a cavity 8, and the auxiliary agent The groove 7 can store high-boiling additives. A second motor 9 is arranged inside the cavity 8 to drive the screw 901 and the connecting rod 902 to rotate. The output end of the second motor 9 is provided with a screw 901, and the other end of the screw 901 extends into the additive groove 7. The outer wall of the screw 901 is provided with a connecting rod 902. A plurality of dispersion rods 903 are arranged at the bottom of the connecting rod 902, which can evenly disperse the polysilicon raw material in the additive groove 7, so that the polysilicon and the high-boiling additive can react evenly, thereby improving the reaction effect.

[0025] Before cracking, polysilicon will be mixed with a high boiling agent to improve the cracking effect of polysilicon. However, in the past, the reactor usually directly puts polysilicon into the high boiling agent solution, which makes it impossible to fully mix and react, thereby reducing the reaction effect of the high boiling agent and polysilicon. Principle of high boiling material cracking process: high boiling materials are transported to the reactor through pipelines, and fully contact with the hydrogen chloride gas entering the reactor through the distributor in the activated high boiling agent, react and generate trichlorosilane and silicon tetrachloride; the products trichlorosilane and silicon tetrachloride are vaporized under the heating of the reactor, and are discharged from the reactor with the incompletely reacted hydrogen chloride gas.

[0026] In this embodiment, all electrical components are controlled by conventional controllers.

[0027] For example, please refer to Figure 1-5The filter plate 2 is connected to the inside of the housing 1 by bolts, the drive motor 4 is connected to the outside of the housing 1 by bolts, the output end of the drive motor 4 is connected to the screw rod 401 through a coupling, the other end of the screw rod 401 is connected to the inner wall of one of the hole slots 3 through a bearing, and both ends of the slide rod 402 are connected to the inner wall of the other hole slot 3 by bolts, the screw rod 401 and the slide rod 402 both penetrate the slider 5 and contact the inner wall of the slider 5, the slider 5 is slidably connected to the inner wall of the hole slot 3 through a slide rail, the fixed plate 6 is connected to the slider 5 by welding, and the two limit blocks 601 are connected to the fixed plate 6 The two limit blocks 601 are slidably connected to the inner wall of the slide groove 201, the sweeping brush 602 is connected to the fixing plate 6 by bolts, the sweeping brush 602 is in contact with the surface of the filter plate 2, the second motor 9 is connected to the inner wall of the cavity 8 by bolts, the output end of the second motor 9 is connected to the screw 901 through a coupling, the other end of the screw 901 extends into the additive groove 7, the connecting rod 902 is coaxially connected to the outer wall of the screw 901, and the plurality of dispersion rods 903 are connected to the bottom of the connecting rod 902 by welding, and the plurality of dispersion rods 903 are in contact with the inner wall of the additive groove 7 at one end away from the connecting rod 902. When in use, the polysilicon raw material is first transported to the housing 1 through the conveying pipe. When the polysilicon passes through the filter plate 2, it is blocked by the filter plate 2. At the same time, the driving motor 4 is controlled to drive the screw 401 to rotate and the slide bar 402 drives the slider 5 to slide in the hole groove 3, thereby driving the fixed plate 6 and the sweeping brush 602 to slide on the filter plate 2, sweeping the polysilicon on the filter plate 2 to the filter hole and evenly falling into the auxiliary agent tank 7 below. At the same time, the second motor 9 is controlled to drive the screw 901 and the connecting rod 902 to rotate, and drive multiple dispersion rods 903 to rotate in the auxiliary agent tank 7 to evenly disperse the polysilicon in the auxiliary agent tank 7. The utility model can make the polysilicon evenly dispersed and fall into the auxiliary agent tank 7, so that the polysilicon and the high boiling auxiliary agent can react evenly, and improve the reaction effect.

[0028] The working process of the utility model is as follows: when in use, the polysilicon raw material is first transported to the housing 1 through the conveying pipe. When the polysilicon passes through the filter plate 2, it is blocked by the filter plate 2. At the same time, the driving motor 4 is controlled to drive the screw 401 to rotate and the slide bar 402 drives the slider 5 to slide in the hole groove 3, thereby driving the fixed plate 6 and the sweeping brush 602 to slide on the filter plate 2, sweeping the polysilicon on the filter plate 2 to the filter hole and evenly falling into the auxiliary agent tank 7 below. At the same time, the second motor 9 is controlled to drive the screw 901 and the connecting rod 902 to rotate, and drive multiple dispersion rods 903 to rotate in the auxiliary agent tank 7 to evenly break up the polysilicon in the auxiliary agent tank 7. The utility model can make the polysilicon evenly dispersed and fall into the auxiliary agent tank 7, so that the polysilicon and the high boiling auxiliary agent can react evenly, improving the reaction effect.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-boiling cracking device for efficient and uniform reaction of polycrystalline silicon, comprising a shell (1), wherein a mixing component for fully mixing the polycrystalline silicon with a high-boiling auxiliary agent is arranged inside the shell (1), characterized in that: The mixing assembly comprises a filter plate (2) arranged inside a housing (1), the inner wall of the filter plate (2) being provided with two slide grooves (201), the inner wall of the housing (1) being provided with two hole grooves (3), a drive motor (4) being arranged outside the housing (1), a screw rod (401) being arranged at the output end of the drive motor (4), the other end of the screw rod (401) extending into one of the slide grooves (201), a slide rod (402) being arranged in the other of the slide grooves (201), and sliders (5) being arranged in the two slide grooves (201), the two sliders (5) ) is provided at the center, two limit blocks (601) are provided at the bottom of the fixed plate (6), a sweeping brush (602) is provided at the bottom of the fixed plate (6), an auxiliary agent groove (7) and a cavity (8) are provided inside the shell (1), a second motor (9) is provided inside the cavity (8), a screw rod (901) is provided at the output end of the second motor (9), the other end of the screw rod (901) extends into the auxiliary agent groove (7), a connecting rod (902) is provided on the outer wall of the screw rod (901), and a plurality of dispersion rods (903) are provided at the bottom of the connecting rod (902).

2. A high boiling cracking device for efficient and uniform reaction of polysilicon according to claim 1, characterized in that: The filter plate (2) is embedded and connected to the inside of the housing (1) by bolts, the drive motor (4) is connected to the outside of the housing (1) by bolts, the output end of the drive motor (4) is connected to the screw rod (401) by a coupling, the other end of the screw rod (401) is connected to the inner wall of one of the hole slots (3) by a bearing, and both ends of the slide rod (402) are connected to the inner wall of the other hole slot (3) by bolts.

3. A high boiling cracking device for efficient and uniform reaction of polysilicon according to claim 1, characterized in that: The screw rod (401) and the slide rod (402) both penetrate the slider (5) and contact the inner wall of the slider (5), and the slider (5) is slidably connected to the inner wall of the hole groove (3) via a slide rail.

4. A high boiling cracking device for efficient and uniform reaction of polysilicon according to claim 1, characterized in that: The fixed plate (6) is connected to the slider (5) by welding, the two limit blocks (601) are integrally formed with the fixed plate (6), the two limit blocks (601) are slidably connected to the inner wall of the slide groove (201), the sweeping brush (602) is connected to the fixed plate (6) by bolts, and the sweeping brush (602) is in contact with the surface of the filter plate (2).

5. The high boiling point cracking device for efficient and uniform reaction of polysilicon according to claim 1, characterized in that: The second motor (9) is connected to the inner wall of the cavity (8) via bolts, the output end of the second motor (9) is connected to the screw rod (901) via a coupling, and the other end of the screw rod (901) extends into the auxiliary agent tank (7).

6. A high boiling cracking device for efficient and uniform reaction of polysilicon according to claim 1, characterized in that: The connecting rod (902) is coaxially connected to the outer wall of the screw rod (901), and the plurality of dispersion rods (903) are connected to the bottom of the connecting rod (902) by welding, and the ends of the plurality of dispersion rods (903) away from the connecting rod (902) are in contact with the inner wall of the auxiliary agent groove (7).

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