Silicon powder recovery device

Abstract

The utility model relates to the technical field of silicon powder processing, specifically disclose a kind of silicon powder recovery device, including recovery box, the top of recovery box is equipped with feed inlet, recovery box is equipped with the sieve mechanism for separating silicon powder and metal impurities in below feed inlet, the bottom side of recovery box is also equipped with discharge port, discharge port seal detachably installs discharge door, recovery box is equipped with the secondary separation mechanism for carrying out secondary impurity removal to silicon powder between sieve mechanism and discharge port, sieve mechanism includes sieve filter screen in recovery box and located below feed inlet and magnetic force net plate for being used for adsorbing metal impurities in the inside of recovery box, magnetic force net plate is installed in the upper layer of sieve filter screen, the side of recovery box is equipped with the vibration component for driving sieve filter screen transverse vibration, solve the problem that traditional silicon powder waste contains metal impurities, not only easy to reduce the purity of silicon powder, also cause the waste of metal resources.

Description

Technical Field

[0001] This application relates to the field of silicon powder processing technology, and specifically discloses a silicon powder recycling device. Background Technology

[0002] Silica powder, also known as microsilica, is formed from gaseous substances produced during the smelting of ferrosilicon or industrial silicon through filtration, oxidation, condensation, and precipitation. It is typically treated as industrial waste. Because silica in microsilica is an amorphous substance with high activity, fine particles, and a large specific surface area, it possesses excellent physicochemical properties, making its recycling and processing highly valuable.

[0003] However, silicon powder waste from industrial production also contains a small amount of metal impurities. If these metal impurities are not removed, it will not only reduce the purity of the silicon powder, but also waste metal resources. Therefore, the inventors have provided a silicon powder recycling device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem that traditional silicon powder waste contains metal impurities, which not only easily reduces the purity of silicon powder but also wastes metal resources.

[0005] To achieve the above objectives, the basic solution of this utility model provides a silicon powder recovery device, including a recovery box for containing and recovering silicon powder. The top of the recovery box is provided with a feed inlet. Inside the recovery box, there is a screening mechanism located below the feed inlet for separating silicon powder from metal impurities. The bottom side of the recovery box is also provided with a discharge port, which is sealed and detachably equipped with a discharge door. Inside the recovery box, there is a secondary separation mechanism located between the screening mechanism and the discharge port for secondary impurity removal of silicon powder. The screening mechanism includes a screening filter screen located inside the recovery box and below the feed inlet, and a magnetic mesh plate located inside the recovery box for adsorbing metal impurities. The magnetic mesh plate is installed on the upper layer of the screening filter screen. A vibration component is provided on one side of the recovery box for driving the screening filter screen to vibrate laterally.

[0006] The principle and effect of this basic scheme are as follows:

[0007] 1. Compared with the prior art, this utility model sets up a screening mechanism to screen silicon powder using a screening filter screen and uses a vibration component to drive the screening filter screen to vibrate, making the silicon powder structure more delicate and uniform. This screening and dispersion of silicon powder leads to better results in subsequent secondary impurity removal. By setting up a magnetic mesh plate, it is easy to adsorb metal impurities in silicon powder, thereby achieving the purpose of preliminary impurity removal. By setting up a secondary separation mechanism, impurities are separated from the screened silicon powder, resulting in better impurity removal effect and improved silicon powder recovery purity. The screened metal impurities can also be recycled and reused, making silicon powder recycling more economical and environmentally friendly. This solves the problem that traditional silicon powder waste contains metal impurities, which not only easily reduces the purity of silicon powder but also wastes metal resources.

[0008] Furthermore, the secondary separation mechanism includes a first magnetic plate disposed on one inner wall of the recycling bin and below one end of the magnetic mesh plate, and a second magnetic plate disposed on the other inner wall of the recycling bin and below the other end of the first magnetic plate. The first magnetic plate is inclined, and the second magnetic plate is inclined from the bottom end of the first magnetic plate to the other end. By setting the first and second magnetic plates, the silicon powder filtered and falling from the screen can be subjected to secondary and tertiary impurity removal treatments in sequence, thereby achieving a better impurity removal effect.

[0009] Furthermore, the recycling bin is symmetrically provided with receiving grooves on both sides to accommodate the reciprocating motion of the two ends of the screen filter. By providing receiving grooves, sufficient space for adjustment of the reciprocating motion of the screen filter is provided.

[0010] Furthermore, the vibration assembly includes a guide groove located on one side of the recycling bin and communicating with the receiving groove, and guide blocks located at both ends of one side of the screen and extending through the guide groove and slidably connected to it. It also includes a motor mounted on the outer side of one end of the recycling bin, a drive wheel coaxially connected to the motor's output end, a mounting column on the end face of the drive wheel, and a driven connecting rod hinged between the mounting column and the guide blocks. By setting the guide groove and guide blocks, the screen can reciprocate within the recycling bin. The motor drives the drive wheel to rotate, and the synchronously rotating mounting column on the drive wheel drives the guide blocks connected to the driven connecting rod to slide synchronously along the guide groove, thereby enabling the guide blocks to drive the screen to reciprocate left and right, achieving left and right vibration adjustment of the screen.

[0011] Furthermore, a sealing ring is provided around the discharge gate, and the discharge gate and discharge port are detachably connected by the sealing ring. A force-applying pull ring is also provided on the outer side of the discharge gate. By setting the sealing ring, the sealing effect between the discharge gate and the discharge port is improved, and by setting the force-applying pull ring, the opening and closing of the discharge gate is facilitated.

[0012] Furthermore, the feed inlet has an inclined, outward-expanding opening structure. By setting the feed inlet to an inclined, outward-expanding structure, the silicon powder is more concentrated during feeding, causing the feed inlet to gradually narrow, thereby preventing the silicon powder from diffusing outward during feeding. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A front view of the structure of a silicon powder recycling device according to an embodiment of this application is shown. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] The reference numerals in the accompanying drawings include: 1. Recycling bin; 2. Inlet; 3. Outlet; 4. Outlet gate; 5. Screening mesh; 6. Magnetic mesh plate; 7. First magnetic plate; 8. Second magnetic plate; 9. Receiving groove; 10. Guide groove; 11. Guide block; 12. Motor; 13. Drive wheel; 14. Mounting column; 15. Force-applying pull ring; 16. Sealing ring.

[0017] A silicon powder recycling device, implementing, for example Figure 1 As shown: a recycling box 1 for containing and recycling silicon powder is provided. The top of the recycling box 1 is provided with a feed inlet 2. Inside the recycling box 1, there is a screening mechanism located below the feed inlet 2 for separating silicon powder from metal impurities. The bottom right side of the recycling box 1 is also provided with a discharge outlet 3. The discharge outlet 3 is sealed and detachably equipped with a discharge door 4. Inside the recycling box 1, there is a secondary separation mechanism located between the screening mechanism and the discharge outlet 3 for secondary impurity removal of silicon powder. The screening mechanism includes a screening filter screen 5 located inside the recycling box 1 and below the feed inlet 2, and a magnetic mesh plate 6 located inside the recycling box 1 for adsorbing metal impurities. The magnetic mesh plate 6 is installed on the upper layer of the screening filter screen 5. The right side of the recycling box 1 is provided with a vibration component for driving the screening filter screen 5 to vibrate laterally.

[0018] Among them, such as Figure 1As shown, the secondary separation mechanism includes a first magnetic plate 7 located on the left inner wall of the recycling bin 1 and below the left end of the magnetic mesh plate 6, and a second magnetic plate 8 located on the right inner wall of the recycling bin 1 and below the right end of the first magnetic plate 7. The first magnetic plate 7 is inclined, and the second magnetic plate 8 is inclined from the bottom end of the first magnetic plate 7 to the other end.

[0019] Among them, such as Figure 1 As shown, the recycling bin 1 has symmetrically arranged receiving grooves 9 on both sides for accommodating the reciprocating motion of the two ends of the screen filter 5.

[0020] Among them, such as Figure 1 As shown, the vibration assembly includes a guide groove 10 located on the rear side of the recycling bin 1 and communicating with the receiving groove 9, and guide blocks 11 located at both ends of the right side of the screen filter 5, extending through the guide groove 10 and slidably connected to the guide groove 10. It also includes a motor 12 installed on the outer rear end of the recycling bin 1, an active wheel 13 coaxially connected to the output end of the motor 12, a mounting post 14 located on the end face of the active wheel 13, and a driven connecting rod hinged between the mounting post 14 and the guide block 11.

[0021] Among them, such as Figure 1 As shown, a sealing ring 16 is provided around the discharge gate 4. The discharge gate 4 and the discharge port 3 are detachably connected by the sealing ring 16. A force-applying pull ring 15 is also provided on the outside of the discharge gate 4.

[0022] Among them, such as Figure 1 As shown, the feed inlet 2 is an inclined, outward-expanding opening structure.

[0023] In the specific implementation of this utility model, the motor 12 is first energized, starting and driving the drive wheel 13 to rotate. The mounting column 14 rotates with the drive wheel 13. The driven connecting rod, hinged to the mounting column 14, rotates with the rotation of the mounting column 14. The driven connecting rod, hinged to the guide block 11, pushes the guide block 11 to slide back and forth along the guide groove 10. The guide block 11 then drives the screen filter 5 to slide back and forth, causing the screen filter 5 to vibrate laterally. Next, the silicon powder to be purified is put into the recovery box 1 through the feed inlet 2. The silicon powder entering the recovery box 1 first falls onto the magnetic mesh plate 6 and then onto the screen filter 5. During this process, the magnetic mesh plate 6 initially adsorbs the metal impurities in the silicon powder, performing the first purification treatment on the silicon powder. Next, the silicon powder falling onto the sieve filter 5 vibrates with the lateral vibration of the sieve filter 5, shaking the silicon powder and sieving it below the sieve filter 5 and onto the first magnetic plate 7. Metal impurities mixed in the silicon powder falling onto the first magnetic plate 7 are adsorbed onto the first magnetic plate 7, completing the second impurity removal process. The silicon powder then rolls along the inclined direction of the first magnetic plate 7 onto the second magnetic plate 8, where the second magnetic plate 8 adsorbs metal impurities from its surface, completing the third impurity removal process. The silicon powder on the surface of the second magnetic plate 8 rolls along its inclined direction to the bottom of the recycling box 1, accumulating and completing the impurity removal and recycling of the silicon powder. When enough silicon powder has been recovered from the recycling box 1, force is applied to the pull ring 15 to open the discharge door 4 and remove the silicon powder from the recycling box 1.

[0024] Compared with existing technologies, this utility model, by setting up a screening mechanism, uses a screening filter screen 5 to screen silicon powder and employs a vibration component to drive the screening filter screen 5 to vibrate, making the silicon powder structure more delicate and uniform. This screening and dispersion of silicon powder leads to better results in subsequent secondary impurity removal. By setting up a magnetic mesh plate 6, it is easy to adsorb metal impurities in silicon powder, thereby achieving the purpose of preliminary impurity removal. By setting up a secondary separation mechanism, impurities are further separated from the screened silicon powder, resulting in better impurity removal and improved silicon powder recovery purity. The screened metal impurities can also be recycled and reused, making silicon powder recycling more economical and environmentally friendly. This solves the problem that traditional silicon powder waste contains metal impurities, which not only easily reduces the purity of silicon powder but also wastes metal resources.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A silicon powder recovery device, characterized in that: The system includes a recycling bin for containing and recycling silicon powder. The top of the recycling bin has a feed inlet. Inside the recycling bin, there is a screening mechanism located below the feed inlet for separating silicon powder from metal impurities. The bottom side of the recycling bin also has a discharge outlet, which is sealed and detachably equipped with a discharge door. Inside the recycling bin, there is a secondary separation mechanism located between the screening mechanism and the discharge outlet for secondary impurity removal of silicon powder. The screening mechanism includes a screening filter screen located inside the recycling bin and below the feed inlet, and a magnetic mesh plate located inside the recycling bin for adsorbing metal impurities. The magnetic mesh plate is installed on the upper layer of the screening filter screen. A vibration component is provided on one side of the recycling bin for driving the screening filter screen to vibrate laterally.

2. The silicon powder recovery device according to claim 1, characterized in that, The secondary separation mechanism includes a first magnetic plate located on one side of the inner wall of the recycling bin and below one end of the magnetic mesh plate, and a second magnetic plate located on the other side of the inner wall of the recycling bin and below the other end of the first magnetic plate. The first magnetic plate is inclined, and the second magnetic plate is inclined from the bottom end of the first magnetic plate to the other end.

3. The silicon powder recovery device according to claim 2, characterized in that, The recycling bin has symmetrically arranged receiving grooves on both sides to accommodate the reciprocating motion of the two ends of the screen filter.

4. A silicon powder recovery device according to claim 3, characterized in that, The vibration assembly includes a guide groove located on one side of the recycling bin and communicating with the receiving groove, and guide blocks located at both ends of one side of the screen filter and extending out of the guide groove and slidably connected to the guide groove. It also includes a motor installed on the outside of one end of the recycling bin, an active wheel coaxially connected to the output end of the motor, a mounting post located on the end face of the active wheel, and a driven connecting rod hinged between the mounting post and the guide block.

5. A silicon powder recovery device according to claim 4, characterized in that, The discharge gate is provided with a sealing ring on its periphery. The discharge gate and the discharge port are detachably connected by sealing with the sealing ring. A force-applying pull ring is also provided on the outside of the discharge gate.

6. A silicon powder recovery device according to claim 1, characterized in that, The feed inlet has an inclined, outward-expanding opening structure.

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