Centrifugal sedimentation impurity removal device for silicon removal post-treatment

Abstract

The invention relates to the technical field of silicon removal treatment, in particular to a centrifugal sedimentation impurity removal device for silicon removal post-treatment, which comprises a machine frame with a wide upper part and a narrow lower part, a pretreatment mechanism and a secondary filtering mechanism are respectively arranged at the upper end and the lower end in the machine frame, and a material guide channel is arranged at one end of the top surface of the machine frame; wherein the pretreatment mechanism comprises a centrifugal filter cartridge mounted at the top end of the interior of the machine frame, the two ends of the centrifugal filter cartridge are sleeved with U-shaped hanging frames with the inner walls of cambered surface structures correspondingly, the tops of the U-shaped hanging frames are fixedly connected with the inner wall of the top of the machine frame, and a spiral feeding rod transversely penetrates through the interior of the centrifugal filter cartridge; according to the invention, through a two-stage purification process combining high-speed centrifugal preliminary impurity removal and angle-adjustable fine filtration, an automatic cleaning and anti-blocking mechanism is integrated, so that the settling speed and the separation efficiency of impurities in a material after silicon removal are obviously improved; and therefore, a powerful guarantee is provided for obtaining high-quality iron powder products subsequently.

Description

Technical Field

[0001] This invention relates to the field of silicon removal technology, specifically to a centrifugal sedimentation impurity removal device for post-silicon removal treatment. Background Technology

[0002] In industries such as photovoltaics, semiconductors, and electronic chemicals, silicon removal (desiliconization) is a critical pre- or post-processing step. After desiliconization and flocculation, a complex mixture of solid and liquid materials with a wide particle size distribution is generated. In order to obtain high-purity products, these mixtures must undergo efficient solid-liquid separation and impurity removal. Existing centrifugal filtration devices typically employ centrifuges in conjunction with filter screens or filter cartridges, utilizing centrifugal force to achieve solid-liquid separation. However, in practical applications, such devices still have many limitations: First, conventional centrifugal filtration equipment mostly uses a single filtration structure, which has limited separation effect for materials with uneven particle size distribution. Larger particles tend to form a filter cake layer quickly on the filter screen surface, while fine particles may penetrate the filter screen or clog the mesh, resulting in unsatisfactory purity of the separated liquid, and the filtration efficiency will drop rapidly as the filter screen becomes clogged. Second, in order to maintain equipment efficiency and prevent filter screen clogging, it is usually necessary to frequently stop the machine to clean or replace the filter screen. This process interrupts continuous production, affects overall efficiency, and is not conducive to achieving automated and continuous industrial production. To address this technical deficiency, a solution is proposed. Summary of the Invention

[0003] The purpose of this invention is to significantly improve the settling speed and separation efficiency of impurities in the desiliconized material by combining a two-stage purification process of high-speed centrifugation for preliminary impurity removal and adjustable-angle fine filtration, and integrating an automatic cleaning and anti-clogging mechanism, thereby providing a strong guarantee for obtaining high-quality iron powder products in the future.

[0004] The objective of this invention can be achieved through the following technical solution: a centrifugal sedimentation and impurity removal device for post-silicon removal processing, comprising a frame that is wider at the top and narrower at the bottom, wherein a pretreatment mechanism and a secondary filtration mechanism are respectively provided at the upper and lower ends inside the frame, and a material guiding channel is provided at one end of the top surface of the frame. The pretreatment mechanism includes a centrifugal filter cylinder installed at the top of the machine frame. Both ends of the centrifugal filter cylinder are fitted with U-shaped hanging frames with arc-shaped inner walls, and the top of the U-shaped hanging frames is fixedly connected to the inner wall of the top of the machine frame. A spiral feeding rod runs horizontally through the inside of the centrifugal filter cylinder. The end of the spiral feeding rod near the discharge port of the centrifugal filter cylinder is rotatably connected to the inner wall of the machine frame, and the other end of the spiral feeding rod extends to the outside of the centrifugal filter cylinder and is fixedly installed with a long toothed roller. An auxiliary rotating gear is meshed at the front end of the long toothed roller. A toothed ring is fixedly fitted on the outer wall of the centrifugal filter cylinder at the feed port end.

[0005] Furthermore, the centrifugal filter cartridge has semi-circular opening slots at one end of the top surface and the other end of the bottom surface, and the opening slots on the top surface correspond vertically to the material guiding channel. The outer wall of the centrifugal filter cartridge is a mesh structure except for the openings at both ends.

[0006] Furthermore, a drive motor is fixedly installed inside the auxiliary gear one, between one end of the shaft and the inner side wall of the frame, and the output shaft of the drive motor is movably inserted inside the shaft. The inner wall of the shaft is provided with a horizontal bar, and the outer wall of the drive motor output shaft is provided with a horizontal groove that matches the horizontal bar. The two slide together to achieve power transmission while allowing the shaft to move axially. An auxiliary gear two is fixedly installed at the other end of the shaft, and the auxiliary gear two is offset from the gear ring.

[0007] Furthermore, a double-shaft retaining ring is fixedly installed on the outer wall of the shaft adjacent to the auxiliary rotating gear, and a concave abutment frame is sleeved on the outside of the double-shaft retaining ring. A cylinder is provided between the side of the abutment frame and the inner wall of one side of the machine frame, and abutment plates are fixedly installed at the front and rear ends of the bottom of the abutment frame, respectively.

[0008] Furthermore, the pretreatment mechanism also includes an inverted concave sliding frame that is snapped into the discharge port end of the centrifugal filter cartridge, and the inner wall of the sliding frame is adapted to the outer wall of the centrifugal filter cartridge. A matching soft brush strip is provided on the arc-shaped inner wall of the sliding frame, and a cylinder is provided between one side of the sliding frame and the inner side wall of the machine frame.

[0009] Furthermore, the secondary filtration mechanism includes two sets of guide filter plates movably installed inside the frame at the lower end of the centrifugal filter cartridge, and the two sets are symmetrically inclined. The bottoms of the two sets of guide filter plates abut each other, and the filter holes on their surfaces are smaller than the filter hole diameter on the surface of the centrifugal filter cartridge.

[0010] Furthermore, one side of the flow guide filter plate is hinged to the inner wall of the frame by a fixedly installed hinge rod, and a spiral rod is provided at the center of the other end. A spiral cylinder is sleeved at the end of the spiral rod, and the spiral cylinder is fixedly connected to the abutment plate at the end away from the spiral rod.

[0011] Furthermore, the secondary filtration mechanism also includes a crossbeam fixedly installed inside the frame and located on the opposite sides of the two sets of guide filter plates, with a striking rod fixedly installed at each end of the two sets of crossbeams on opposite sides.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, by setting up a pretreatment mechanism, utilizes the centrifugal force generated by the high-speed rotation of the centrifugal filter cartridge to quickly separate small particulate impurities and liquids in the desiliconized material, achieving preliminary separation. Furthermore, the cylinder drives the frame to move, which in turn drives the shaft and auxiliary gear two to move, changing the meshing state of the auxiliary gear two and the gear ring, forcing the centrifugal filter cartridge to rotate, further dispersing and screening large particulate materials. Finally, the material is pushed to the discharge port by the screw feeder and discharged to the next stage. In addition, the concave sliding frame and soft brush strips can automatically clean the outer wall of the centrifugal filter cartridge during its rotation, preventing impurities from clogging the mesh and ensuring the normal operation of the centrifugal filter cartridge. At the same time, the cylinder can drive the sliding frame to move, further enhancing the cleaning effect.

[0013] 2. This invention employs a secondary filtration mechanism, utilizing two sets of symmetrically inclined guide filter plates with filter holes smaller than those of a centrifugal filter cylinder, to perform secondary fine filtration on the material initially separated by the pretreatment mechanism. This further intercepts remaining small particulate impurities, improving the overall purity of the material. The guide filter plates are hinged to the inner wall of the frame via hinge rods and connected to the abutment plate via a screw rod, screw cylinder, and abutment plate. When the cylinder drives the abutment frame to move, causing the abutment plate to move, the angle of the guide filter plates changes, allowing liquid and solid to be discharged sequentially. Simultaneously, the striking rod installed on the crossbeam vibrates the guide filter plates during angle adjustment or operation, causing impurities adhering to the filter plate surface to fall off, preventing filter plate blockage, and ensuring the continuous and stable operation of the secondary filtration mechanism. This effectively improves the settling speed and separation efficiency of impurities in the desiliconized material, laying a solid foundation for obtaining high-quality iron powder products. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a front sectional view of the frame of the present invention; Figure 4 This is a three-dimensional schematic diagram of the pretreatment mechanism of the present invention; Figure 5 This is a side view of the centrifugal filter cartridge and sliding frame combined according to the present invention; Figure 6 This is a rear sectional view of the frame of the present invention; Figure 7 This is a three-dimensional structural diagram of the flow guide filter plate of the present invention.

[0016] In the diagram: 1. Machine frame; 2. Pre-treatment mechanism; 21. Centrifugal filter cartridge; 22. U-shaped hanging frame; 23. Screw feed rod; 24. Long toothed roller; 25. Auxiliary rotating gear one; 26. Gear ring; 27. Shaft; 28. Drive motor; 29. ​​Auxiliary gear two; 210. Double shaft retaining ring; 211. Abutment frame; 212. Cylinder one; 213. Abutment plate; 214. Sliding frame; 215. Soft brush strip; 216. Cylinder two; 3. Secondary filtration mechanism; 31. Guide filter plate; 32. Screw rod; 33. Screw cylinder; 34. Crossbeam; 35. Impact rod; 4. Material guide channel. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figure 1 - Figure 6 As shown, a centrifugal sedimentation and impurity removal device for post-silicon removal processing includes a frame 1 that is wider at the top and narrower at the bottom. A pretreatment mechanism 2 and a secondary filtration mechanism 3 are respectively installed at the upper and lower ends inside the frame 1, and a material guide channel 4 is provided at one end of the top surface of the frame 1. The pretreatment mechanism 2 includes a centrifugal filter cylinder 21 installed at the top of the inside of the frame 1. A U-shaped hanging frame 22 with an arc-shaped inner wall is sleeved at both ends of the centrifugal filter cylinder 21, and the top of the U-shaped hanging frame 22 is fixedly connected to the top inner wall of the frame 1. A semi-circular opening groove is opened at one end of the top surface and the other end of the bottom surface of the centrifugal filter cylinder 21, and the opening groove on the top surface corresponds vertically to the material guide channel 4. The outer wall of the centrifugal filter cylinder 21 is a mesh structure except for the openings at both ends. A spiral feed rod 23 runs horizontally through the interior of the centrifugal filter cartridge 21. The end of the spiral feed rod 23 near the discharge port of the centrifugal filter cartridge 21 is rotatably connected to the inner wall of the frame 1. The other end of the spiral feed rod 23 extends to the outside of the centrifugal filter cartridge 21 and is fixedly installed with a long toothed roller 24. An auxiliary rotating gear 25 meshes with the front end of the long toothed roller 24. A toothed ring 26 is fixedly sleeved on the outer wall of the centrifugal filter cartridge 21 at the feed port end. A drive motor 28 is fixedly installed between one end of a shaft 27 and the inner side wall of the frame 1 inside the auxiliary rotating gear 25. The output shaft of the drive motor 28 moves through the shaft 27. A horizontal bar is provided on the inner wall of the shaft 27, and a horizontal groove adapted to the horizontal bar is provided on the outer wall of the output shaft of the drive motor 28. The two slide together to achieve power transmission while allowing the shaft 27 to move axially. An auxiliary gear 29 is fixedly installed on the other end of the shaft 27, and the auxiliary gear 29 and the toothed ring 26 are staggered.

[0019] Preliminary centrifugal separation stage: The solid-liquid mixture after desiliconization and flocculation treatment enters the pretreatment mechanism 2 through the guide channel 4 at the top of the frame 1. The material first falls into the open feed trough on the top surface of the centrifugal filter cylinder 21 through the guide channel 4. The drive motor 28 starts and transmits power to the shaft 27 through the sliding keyway inside the shaft 27 through its output shaft. This drives the auxiliary gear 1 25 and the auxiliary gear 29 outside the shaft 27 to rotate synchronously. The auxiliary gear 1 25 meshes with the long toothed roller 24 first, forcing the long toothed roller 24 and the screw feed rod 23 to rotate. The screw feed rod 23 guides the solid-liquid mixture into the centrifugal filter cylinder 21 in sequence. During this process, smaller particles and liquid pass through the mesh structure of the centrifugal filter cylinder 21 into the lower part of the frame 1 to complete the preliminary centrifugal removal, while larger particles are deposited inside the centrifugal filter cylinder 21. A double-shaft retaining ring 210 is fixedly installed on the outer wall of the shaft 27 adjacent to the auxiliary rotating gear 25, and a concave abutment frame 211 is sleeved on the outside of the double-shaft retaining ring 210. A cylinder 212 is provided between the side of the abutment frame 211 and the inner wall of one side of the machine frame 1, and abutment plates 213 are fixedly installed at the front and rear ends of the bottom of the abutment frame 211 respectively. Re-start cylinder 212 to drive the abutment frame 211 to reciprocate. The top of the abutment frame 211 pushes the shaft 27 to move axially with the help of the double-shaft retaining ring 210. At this time, the originally misaligned auxiliary gear 29 and the gear ring 26 gradually approach each other and mesh, thereby driving the gear ring 26 to rotate. The gear ring 26 drives the centrifugal filter cartridge 21 to rotate. At the same time, the auxiliary rotating gear 25 and the long toothed roller 24 gradually misalign and stop meshing. The screw feed rod 23 stops feeding material into the filter cartridge 21. As the centrifugal filter cartridge 21 rotates, the sediment inside is further separated under the action of centrifugal force. Among them, the impurity particles with higher density collide with and disperse the inner wall of the centrifugal filter cartridge 21, further accelerating the solid-liquid separation effect; while the material with relatively lower density and the required particle size enters the lower part of the machine frame through the mesh structure. When the sedimentation layer reaches the preset conditions, the extension and retraction of the cylinder 212 can be controlled to force the abutment frame 211 to drive the shaft 27 to move in the opposite direction, thereby causing the auxiliary gear 29 to disengage from the gear ring 26. At the same time, the auxiliary rotating gear 25 re-engages with the long toothed roller 24, restoring the feeding function of the screw feeder 23, and discharging the remaining material in the centrifugal filter cartridge 21 through a specific discharge port, thereby achieving continuous centrifugal sedimentation and impurity removal operation.

[0020] Example 2: Please refer to Figure 3 - Figure 5As shown, the pretreatment mechanism 2 also includes an inverted concave sliding frame 214 that is snapped into the discharge port end of the centrifugal filter cartridge 21, and the inner wall of the sliding frame 214 is adapted to the outer wall of the centrifugal filter cartridge 21. A matching soft brush strip 215 is provided on the arc-shaped inner wall of the sliding frame 214, and a cylinder 216 is provided between one side of the sliding frame 214 and the inner side wall of the machine frame 1. When impurities adhere to the mesh wall of the centrifugal filter cartridge 21, cylinder 216 can be activated to drive the inverted concave sliding frame 213 to reciprocate along the axial direction of the centrifugal filter cartridge 21. As the centrifugal filter cartridge 21 rotates in Embodiment 1, the soft brush strip 214 on the inner wall of the sliding frame 213 scrapes and cleans the outer wall of the centrifugal filter cartridge 21, restoring its filtration permeability.

[0021] Example 3: Please refer to Figure 2 — Figure 4 , Figure 6 and Figure 7 As shown, the secondary filtration mechanism 3 includes two sets of guide filter plates 31 movably installed inside the frame 1 at the lower end of the centrifugal filter cylinder 21, and the two sets are symmetrically inclined. The bottoms of the two sets of guide filter plates 31 abut each other, and the filter holes on their surfaces are smaller than the filter hole diameter on the surface of the centrifugal filter cylinder 21. One side of the guide filter plate 31 is hinged to the inner wall of the frame 1 by a fixedly installed hinge rod, and a spiral rod 32 is provided at the center of the other end. A spiral cylinder 33 is sleeved at the end of the spiral rod 32, and the end of the spiral cylinder 33 away from the spiral rod 32 is fixedly connected to the abutment plate 213. The secondary filtration mechanism 3 also includes a crossbeam 34 fixedly installed inside the frame 1 and located on the opposite side of the two sets of guide filter plates 31. Striking rods 35 are fixedly installed at both ends of the opposite sides of the two sets of crossbeams 34.

[0022] The fine particles and liquid that fall from the pretreatment unit land on two sets of symmetrically inclined guide filter plates 31. Since the filter pore diameter of the guide filter plate 31 is smaller than that of the centrifugal filter cylinder 21, the liquid is further filtered through the mesh and first introduced to the outside, while the fine particles remain on the surface of the guide filter plate 31. The material flows on the inclined guide filter plate 31 and finally gathers and is discharged in the V-shaped collection channel formed by the mutual contact at the bottom, resulting in a material with higher purity. After the liquid filtration is completed, as described in Embodiment 1, the cylinder 216 pushes the shaft 27 to move axially, and the abutment plate 212 on it drives the spiral cylinder 33 to move synchronously. The movement of the spiral cylinder 33 will drive the spiral rod 32 with its threaded engagement to perform telescopic movement, thereby changing the tilt angle of the guide filter plate 31, forcing the optimization of the material flow path, and opening the V-shaped material collection channel formed by the abutment, so that the material can be discharged later. At the same time, when the angle of the guide filter plate 31 is adjusted, the back of the guide filter plate 31 will contact and collide with the striking rod 35 fixed on the crossbeam 34. This impact will generate high-frequency micro-vibration, which can effectively shake off the fine impurities that are blocked in the filter holes of the guide filter plate 31, realizing automatic and continuous anti-clogging.

[0023] Working principle: When using this invention, the solid-liquid mixture that has undergone desiliconization and flocculation treatment is first fed into the pretreatment mechanism 2 through the guide channel 4 at the top of the frame 1. It first falls into the open feed trough on the top surface of the centrifugal filter cylinder 21. Then, the drive motor 28 is started, and the power is transmitted through the output shaft and the sliding keyway inside the shaft 27. This drives the auxiliary gear 1 25 and the auxiliary gear 29 outside the shaft 27 to rotate. The auxiliary gear 1 25 meshes with the long toothed roller 24, causing the long toothed roller 24 and the spiral feed rod 23 to rotate. The material enters the centrifugal filter cylinder 21 in sequence. Smaller particles and liquids pass through the mesh structure of the centrifugal filter cylinder 21 and enter the lower part of the frame 1 to complete the initial centrifugal removal. Larger particles are deposited inside the centrifugal filter cylinder 21. Next, cylinder 212 drives the frame 211 to reciprocate, pushing shaft 27 to move axially. Auxiliary gear 29 meshes with gear ring 26, driving centrifugal filter cartridge 21 to rotate. At the same time, auxiliary gear 25 and long toothed roller 24 are misaligned and stop meshing. Spiral feed rod 23 stops feeding. The centrifugal filter cartridge 21 rotates, causing the internal deposited material to be further separated under centrifugal force. The denser impurity particles collide with the inner wall and disperse. The relatively less dense material with the required particle size passes through the mesh and enters the lower part of the machine frame 1. When the deposition layer reaches the preset conditions, control cylinder 212 to extend and retract, causing auxiliary gear 29 to disengage from the gear ring 26, and auxiliary rotating gear 25 to re-engage with the long toothed roller 24, restoring the feeding function of the spiral feed rod 23, and discharging the remaining material in the centrifugal filter cylinder 21 through the discharge port; if there are impurities attached to the mesh wall of the centrifugal filter cylinder 21, start cylinder 216 to drive the inverted concave sliding frame 214 to move back and forth along the axial direction of the centrifugal filter cylinder 21, and cooperate with the rotation of the centrifugal filter cylinder 21. The soft brush strip 215 on the inner wall of the sliding frame 214 scrapes and cleans the outer wall of the centrifugal filter cylinder 21, restoring its filtration permeability.

[0024] The fine particles and liquid falling from the pretreatment unit 2 fall onto the two sets of guide filter plates 31 of the secondary filtration unit 3. The liquid is further filtered through the mesh and introduced to the outside. The fine particles remain on the surface of the guide filter plate 31 and flow on the inclined surface. Finally, they are collected and discharged in the bottom V-shaped collection channel to obtain a material with higher purity. After the liquid is filtered, cylinder 216 pushes shaft 27 to move axially, which in turn moves the spiral cylinder 33 and drives the spiral rod 32 to extend and retract, changing the tilt angle of the guide filter plate 31 and opening the V-shaped material collection channel to allow the material to be discharged. At the same time, the back of the guide filter plate 31 contacts and collides with the impact rod 35 to generate micro-vibration, shaking off the small impurities that are blocking the filter holes, thus achieving automatic and continuous anti-clogging. The entire device, through the synergistic effect of the pretreatment mechanism and the secondary filtration mechanism, efficiently completes the centrifugal sedimentation and impurity removal work of the solid-liquid mixture after silicon removal.

[0025] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A centrifugal sedimentation impurity removal device for post-silicon removal processing, characterized in that: The machine includes a frame (1) that is wider at the top and narrower at the bottom. A pretreatment mechanism (2) and a secondary filtration mechanism (3) are respectively provided at the upper and lower ends inside the frame (1), and a material guide channel (4) is provided at one end of the top surface of the frame (1). The pretreatment mechanism (2) includes a centrifugal filter cylinder (21) installed at the top of the machine frame (1). The centrifugal filter cylinder (21) is fitted with a U-shaped hanging frame (22) with an arc-shaped inner wall at both ends. The top of the U-shaped hanging frame (22) is fixedly connected to the top inner wall of the machine frame (1). A spiral feeding rod (23) runs horizontally through the centrifugal filter cylinder (21). The spiral feeding rod (23) is rotatably connected to the inner wall of the machine frame (1) at the discharge port end of the centrifugal filter cylinder (21). The other end of the spiral feeding rod (23) extends to the outside of the centrifugal filter cylinder (21) and is fixedly installed with a long toothed roller (24). An auxiliary rotating gear (25) meshes with the front end of the long toothed roller (24). A toothed ring (26) is fixedly fitted on the outer wall of the centrifugal filter cylinder (21) at the feed port end.

2. The centrifugal sedimentation impurity removal device for post-silicon removal processing according to claim 1, characterized in that, The centrifugal filter cylinder (21) has a semi-circular opening groove at one end of the top surface and the other end of the bottom surface, and the opening groove on the top surface corresponds to the material guiding channel (4) vertically. The outer wall of the centrifugal filter cylinder (21) is a mesh structure except for the openings at both ends.

3. The centrifugal sedimentation impurity removal device for post-silicon removal processing according to claim 1, characterized in that, The auxiliary gear (25) is fixedly connected to a drive motor (28) between one end of the shaft (27) and the inner side wall of the frame (1). The output shaft of the drive motor (28) is movably connected inside the shaft (27). The inner wall of the shaft (27) is provided with a horizontal bar, and the outer wall of the output shaft of the drive motor (28) is provided with a horizontal groove that matches the horizontal bar. The two slide together to achieve power transmission while allowing the shaft (27) to move axially. The other end of the shaft (27) is fixedly installed with an auxiliary gear (29), and the auxiliary gear (29) and the gear ring (26) are offset from each other.

4. The centrifugal sedimentation impurity removal device for post-silicon removal processing according to claim 3, characterized in that, A double-shaft retaining ring (210) is fixedly installed on the outer wall of the shaft (27) adjacent to the auxiliary rotating gear (25), and a concave abutment frame (211) is sleeved on the outside of the double-shaft retaining ring (210). A cylinder (212) is provided between the side of the abutment frame (211) and the inner wall of one side of the machine frame (1), and abutment plates (213) are fixedly installed at the front and rear ends of the bottom of the abutment frame (211).

5. The centrifugal sedimentation impurity removal device for post-silicon removal processing according to claim 1, characterized in that, The pretreatment mechanism (2) also includes an inverted concave sliding frame (214) that is snapped into the discharge port end of the centrifugal filter cartridge (21), and the inner wall of the sliding frame (214) is adapted to the outer wall of the centrifugal filter cartridge (21). A matching soft brush strip (215) is provided on the arc-shaped inner wall of the sliding frame (214), and a cylinder two (216) is provided between one side of the sliding frame (214) and the inner side wall of the machine frame (1).

6. The centrifugal sedimentation impurity removal device for post-silicon removal processing according to claim 1, characterized in that, The secondary filtration mechanism (3) includes two sets of guide filter plates (31) movably installed inside the frame (1) at the lower end of the centrifugal filter cylinder (21), and the two sets are symmetrically inclined. The bottoms of the two sets of guide filter plates (31) abut each other, and the filter holes on their surfaces are smaller than the filter hole diameter on the surface of the centrifugal filter cylinder (21).

7. The centrifugal sedimentation impurity removal device for post-silicon removal processing according to claim 6, characterized in that, The flow guide filter plate (31) is hinged to the inner wall of the frame (1) on one side by a fixedly installed hinge rod, and a spiral rod (32) is provided at the center of the other end. A spiral cylinder (33) is sleeved at the end of the spiral rod (32), and the end of the spiral cylinder (33) away from the spiral rod (32) is fixedly connected to the abutment plate (213).

8. The centrifugal sedimentation impurity removal device for post-silicon removal processing according to claim 7, characterized in that, The secondary filtration mechanism (3) also includes a crossbeam (34) fixedly installed inside the frame (1) and located on the opposite side of the two sets of guide filter plates (31), with a striking rod (35) fixedly installed at both ends of the opposite sides of the two sets of crossbeams (34).

Images