Impurity removal device for silicon material production
By combining crushing, screening, air separation and magnetic adsorption through a multi-stage processing system, the problem of low impurity removal efficiency in traditional silicon material production has been solved, achieving a highly efficient and compact impurity removal effect, which is suitable for the industrial production of silicon materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENJIANG KEMENG NEW MATERIALS CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional silicon material production processes are characterized by low impurity removal efficiency, large footprint, high energy consumption, and a lack of ability to handle impurities in powder.
The system employs a multi-stage processing system, including a crushing box, a screening box, an air classifier, and a magnetic adsorption component. It removes impurities by combining crushing, screening, air classifier, and magnetic adsorption. The crushing box uses a dual-wheel reverse crushing design, the screening box uses a vibrating screen with replaceable screens, the air classifier separates by airflow, and the magnetic adsorption component uses staggered magnetic rollers to adsorb metal impurities.
It achieves an efficient and compact impurity removal process, ensuring comprehensive treatment of silicon materials and significantly improving the impurity removal effect, making it particularly suitable for large-scale industrial production of silicon materials.
Smart Images
Figure CN224252907U_ABST
Abstract
Description
Technical Field
[0001] This utility model mainly relates to the technical field of silicon material production, specifically a purification device for silicon material production. Background Technology
[0002] Silicon is a core material for semiconductors, photovoltaics, and electronic devices. It is mainly used to manufacture chips, solar cells, and integrated circuits. It has high stability, excellent electrical properties, and a wide range of applications. In the production process of silicon materials, metal particles, dust, and insufficiently crushed coarse particles are often mixed in the raw materials, so impurity removal is required. Traditional processes require multiple machines to process them in steps, which has problems such as low efficiency, large footprint, and high energy consumption.
[0003] According to application number 201921537451.3, a high-efficiency pulverizing device for silicon material production is provided, in which pulverizing blades are uniformly fixedly mounted on the outer wall of the pulverizing disc, a guide plate is fixedly installed on the bottom left side of the inner cavity of the first pulverizing box, a protective frame is fixedly installed on the top right side of the inner cavity of the first pulverizing box, buffer liners are uniformly fixedly installed on the left side wall of the protective frame, a protective cover plate adapted to the guide plate is fixedly mounted on the top of the pulverizing hopper, a pulverizing gear set is fixedly mounted on the inner wall of the pulverizing hopper through a movable shaft, a pulverizing motor is fixedly installed in the inner cavity of the protective box, and an auger is fixedly mounted after the output end of the pulverizing motor passes through the right side wall of the second pulverizing box, with the left end of the auger movably assembled with a bearing seat fixed on the left side wall of the inner cavity of the second pulverizing box.
[0004] The aforementioned document, through structural improvements, enables repeated crushing of materials, thereby enhancing the quality and efficiency of material crushing. However, it lacks the function of handling impurities contained in silicon powder. Utility Model Content
[0005] Based on this, the purpose of this utility model is to provide a purification device for silicon material production, so as to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A purification device for silicon material production includes a multi-layer frame, a crushing box fixedly installed on the top of the multi-layer frame, a screening box provided in the middle layer of the multi-layer frame, a discharge belt provided at the bottom of the multi-layer frame, two crushing wheels rotatably installed inside the crushing box, a screening screen inserted inside the screening box, a vibrating component fixedly installed on one side of the screening box in the middle layer of the multi-layer frame, an air separator provided at the discharge end of the screening box, and a magnetic suction component provided at the top of the discharge belt.
[0008] Preferably, a dual-output shaft reducer is fixedly installed on one side of the outside of the crushing box, and the two output ends of the dual-output shaft reducer are respectively connected to the two crushing wheel shafts. A first motor is fixedly installed on one side of the top layer of the multi-layer frame, and the execution end of the first motor is connected to the input end of the dual-output shaft reducer. A material leakage trough is provided at the bottom of the crushing box.
[0009] Preferably, the bottom of the screening box is fixed with an inclined plate, and multiple first support plates are fixedly connected to both sides of the outer wall of the screening box. Multiple second support plates aligned with the first support plates are fixedly installed on both sides of the middle layer of the multi-layer frame. The first support plates and the second support plates are connected by springs.
[0010] Preferably, a fixed frame is installed on the outer ring of the screening mesh, a slot is opened in the middle of the screening box, two rotating buckles are provided at the top two ends of the outlet side of the slot, and a handle is fixedly connected to the outlet side of the fixed frame.
[0011] Preferably, the vibration component includes a second motor fixedly installed on one side of the middle layer of the multi-layer frame, a first wheel fixedly connected to the actuator of the second motor, a second wheel rotatably installed on one side of the screening box, and the first wheel and the second wheel connected by a belt rope.
[0012] Preferably, a rubber tube is fixedly installed on the top of the air classifier box, the rubber tube is connected to the discharge end at the bottom of the screening box, a discharge hood is connected through the side of the air classifier box away from the discharge belt, and a row of blowers is installed on the other side of the air classifier box.
[0013] Preferably, the magnetic attraction component includes two mounting rollers rotatably mounted on the top of the discharge belt. Multiple equally spaced circular magnets are fixedly mounted in the middle of the mounting rollers. The bottom of the circular magnets is close to the discharge belt, and the multiple circular magnets mounted in the middle of the two mounting rollers are staggered.
[0014] In summary, this technical solution has the following main advantages:
[0015] This invention achieves efficient impurity removal through a multi-stage processing system. The crushing box adopts a double-wheel reverse crushing design, combined with a vibrating screening box with replaceable screens, to ensure uniform crushing of raw materials and precise separation of coarse and fine particles. The air classifier effectively removes light impurities through airflow separation, while the staggered magnetic rollers can fully adsorb metallic impurities, forming a complete impurity removal process.
[0016] The device adopts a modular design, with each functional unit working in concert. The vibration screening system generates a controllable vibration frequency through eccentric wheel drive, which significantly improves screening efficiency. The flexible connection of the air separation system avoids vibration interference and ensures the stability of airflow separation. The magnetic adsorption device uses rotating magnetic rollers arranged in an alternating pattern to achieve all-round iron removal from silicon materials. The whole system has a compact structure and significant impurity removal effect, making it particularly suitable for the needs of large-scale industrial production of silicon materials. Attached Figure Description
[0017] Figure 1 This is an isometric view of the overall structure of this utility model;
[0018] Figure 2 This is a top view of the overall structure of this utility model;
[0019] Figure 3 This is a schematic diagram showing the main structural components of this utility model.
[0020] Figure 4 This is a schematic diagram showing the disassembled bottom structure of this utility model.
[0021] Figure Descriptions: 10. Multi-layer frame; 11. Crushing box; 12. Screening box; 13. Discharge belt; 14. Crushing wheel; 15. Screening mesh; 16. Vibrating component; 17. Air separator; 18. Magnetic component; 111. Dual-shaft reducer; 112. First motor; 113. Discharge chute; 121. Inclined plate; 122. First support plate; 123. Second support plate; 124. Spring; 151. Fixing frame; 152. Slot; 153. Rotary buckle; 154. Handle; 161. Second motor; 162. First wheel; 163. Second wheel; 164. Belt rope; 171. Rubber hose; 172. Discharge cover; 173. Blower fan; 181. Mounting roller; 182. Round magnet. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0023] Example
[0024] Please refer to the attached document carefully. Figure 1 , 2As shown in Figures 3 and 4, a purification device for silicon material production includes a multi-layer frame 10. A crushing box 11 is fixedly installed on the top of the multi-layer frame 10. A screening box 12 is provided in the middle layer of the multi-layer frame 10. A discharge belt 13 is provided at the bottom of the multi-layer frame 10. Two crushing wheels 14 are rotatably installed inside the crushing box 11. A screening screen 15 is inserted inside the screening box 12. A vibrating component 16 is fixedly installed on one side of the screening box 12 in the middle layer of the multi-layer frame 10. An air separator 17 is provided at the discharge end of the screening box 12. A magnetic suction component 18 is provided at the top of the discharge belt 13. A dual-output shaft reducer 111 is fixedly installed on one side of the outside of the crushing box 11. The two output ends of the dual-output shaft reducer 111 are respectively connected to the central shafts of the two crushing wheels 14. A first motor 112 is fixedly installed on one side of the top layer of the multi-layer frame 10. The actuating end of the first motor 112 is connected to the input end of the dual-output shaft reducer 111. A material leakage trough is provided at the bottom of the crushing box 11. 113; A sloping plate 121 is fixed to the bottom of the screening box 12. Multiple first support plates 122 are fixedly connected to both sides of the outer wall of the screening box 12. Multiple second support plates 123 aligned with the first support plates 122 are fixedly installed on both sides of the middle layer of the multi-layer frame 10. The first support plates 122 and the second support plates 123 are connected by springs 124. A fixed frame 151 is installed on the outer ring of the screening mesh 15. A drawer 152 is opened in the middle of the screening box 12. Two rotating buckles 153 are provided at both ends of the top of the outlet side of the drawer 152. A handle 154 is fixedly connected to the outlet side of the fixed frame 151. The vibration component 16 includes a second motor 161 fixedly installed on one side of the middle layer of the multi-layer frame 10. A first wheel 162 is fixedly connected to the execution end of the second motor 161. A second wheel 163 is rotatably installed on one side of the screening box 12. The first wheel 162 and the second wheel 163 are connected by a belt rope 164.
[0025] As described above, two counter-rotating crushing wheels 14 are installed inside the crushing box 11. Through interlocking action, they crush the raw material into uniform particles. A dual-output shaft reducer 111 is fixed to the outside of the crushing box. Its input end is connected to the first motor 112, and its output end drives the central shafts of the two crushing wheels 14 respectively, ensuring synchronous counter-rotation and avoiding material jamming. The material leakage chute 113 is located at the bottom of the crushing box 11. The crushed material falls evenly into the middle screening box 12 through this chute. The screening screen 15 is embedded in the slot 152 in the middle of the screening box 12 through the outer ring fixing frame 151 and locked by two rotating buckles 153. The pull handle 154 allows for quick replacement of screens with different aperture sizes. Inclined plate 121 is fixed to the bottom of screening box 12, guiding the undersized material to slide into air separator 17; the outer walls of screening box 12 are connected to the second support plate 123 of the middle layer of multi-layer frame through multiple sets of first support plates 122, and the two are buffered by spring 124 to buffer vibration impact. The second motor 161 drives the first wheel 162 to rotate, and drives the second wheel 163 on one side of screening box 12 through belt 164, forming an eccentric rotational force, which forces screening box 12 to vibrate periodically. The vibration frequency is adjusted by the motor speed. After the screen is vibrated, the material is accelerated to stratify. Fine particles fall into inclined plate 121 through the screen, and coarse particles remain on the surface and slide to the discharge end.
[0026] Please refer to the attached document carefully. Figure 1 , 3 As shown in Figure 4, a rubber tube 171 is fixedly installed on the top of the air classifier 17. The rubber tube 171 is connected to the bottom discharge end of the screening box 12. A discharge cover 172 is connected through the side of the air classifier 17 away from the discharge belt 13. A row of blowers 173 is installed on the other side of the air classifier 17. The magnetic attraction component 18 includes two mounting rollers 181 that are rotatably installed on the top of the discharge belt 13. Multiple equally spaced round magnets 182 are fixedly installed in the middle of the mounting rollers 181. The bottom of the round magnets 182 is close to the discharge belt 13. The multiple round magnets 182 installed in the middle of the two mounting rollers 181 are staggered back and forth.
[0027] As described above, the rubber tube 171 on the air classifier 17 flexibly connects the discharge end of the screening box 12 to the top of the air classifier 17 to avoid vibration transmission. The blower fan 173 is installed on one side of the air classifier 17 to generate horizontal airflow. Light dust and debris are blown into the discharge hood 172 and discharged. Heavy particles of silicon material fall to the discharge belt 13 due to gravity. The discharge hood 172 is connected to a dust removal device to achieve centralized dust collection. Two mounting rollers 181 are rotatably mounted above the discharge belt 13. Multiple round magnets 182 are fixed on the surface. The bottom of the round magnets 182 is close to the surface of the belt. They are driven to rotate by the silicon material on the discharge belt 13. The round magnets 182 on the two rollers are arranged alternately to ensure that the silicon material is rolled and adsorbed in the entire area when it passes through, thereby improving the magnetic impurity capture rate. Magnetic particles are adsorbed on the surface of the magnets. Non-magnetic silicon material is transported to the next process with the belt to remove metal impurities in the silicon material.
[0028] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.
Claims
1. A purification device for silicon material production, comprising a multi-layer frame (10), wherein a crushing box (11) is fixedly installed on the top of the multi-layer frame (10), characterized in that, The multi-layer frame (10) is provided with a screening box (12) in the middle layer, and a discharge belt (13) is provided at the bottom of the multi-layer frame (10). Two crushing wheels (14) are rotatably installed inside the crushing box (11). A screening screen (15) is inserted inside the screening box (12). A vibration component (16) is fixedly installed on one side of the screening box (12) in the middle layer of the multi-layer frame (10). An air separator (17) is provided at the discharge end of the screening box (12). A magnetic suction component (18) is provided at the top of the discharge belt (13).
2. The impurity removal device for silicon material production according to claim 1, characterized in that, A dual-output shaft reducer (111) is fixedly installed on one side of the outside of the crushing box (11). The two output ends of the dual-output shaft reducer (111) are respectively connected to the central shafts of the two crushing wheels (14). A first motor (112) is fixedly installed on one side of the top layer of the multi-layer frame (10). The execution end of the first motor (112) is connected to the input end of the dual-output shaft reducer (111). A material leakage trough (113) is provided at the bottom of the crushing box (11).
3. The impurity removal device for silicon material production according to claim 1, characterized in that, The bottom of the screening box (12) is fixed with an inclined plate (121). Multiple first support plates (122) are fixedly connected to both sides of the outer wall of the screening box (12). Multiple second support plates (123) aligned with the first support plates (122) are fixedly installed on both sides of the middle layer of the multi-layer frame (10). The first support plate (122) and the second support plate (123) are connected by a spring (124).
4. The impurity removal device for silicon material production according to claim 1, characterized in that, The outer ring of the screening mesh (15) is equipped with a fixed frame (151), the screening box (12) has a drawer (152) in the middle, the top two ends of the drawer (152) are provided with two rotating buckles (153), and the drawer (154) is fixedly connected to the drawer (151) on the drawer side.
5. The impurity removal device for silicon material production according to claim 1, characterized in that, The vibration component (16) includes a second motor (161) fixedly installed on one side of the middle layer of the multi-layer frame (10). The execution end of the second motor (161) is fixedly connected to a first wheel (162). A second wheel (163) is rotatably installed on one side of the screening box (12). The first wheel (162) and the second wheel (163) are connected by a belt rope (164).
6. The impurity removal device for silicon material production according to claim 1, characterized in that, A rubber tube (171) is fixedly installed on the top of the air classifier (17), and the rubber tube (171) is connected to the bottom discharge end of the screening box (12). A discharge hood (172) is connected through the side of the air classifier (17) away from the discharge belt (13), and a row of blowers (173) is installed on the other side of the air classifier (17).
7. The impurity removal device for silicon material production according to claim 1, characterized in that, The magnetic attraction component (18) includes two mounting rollers (181) rotatably mounted on the top of the discharge belt (13). Multiple equally spaced round magnets (182) are fixedly mounted in the middle of the mounting rollers (181). The bottom of the round magnets (182) is close to the discharge belt (13). The multiple round magnets (182) mounted in the middle of the two mounting rollers (181) are staggered back and forth.