Metal silicon recovery stirring device for casting
By using a crushing device with a conical shell and conical mesh structure, and employing a hammer to crush and filter silicon waste, the problem of poor crushing effect and over-crushing in existing devices is solved, thus realizing an efficient and simple silicon recycling and casting process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN TIANCHUANG ENERGY MATERIALS CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-06-09
AI Technical Summary
Existing crushing devices are not effective at crushing metallic silicon, resulting in uneven particle sizes, severe over-crushing, and the need for additional screening devices, which increases energy consumption and construction costs, and reduces the efficiency of metallic silicon recycling and casting.
The process employs a conical shell and conical mesh structure, utilizing a hammer to impact, shear, and crush silicon waste, and then employing a conical mesh and a filter screen for dual filtration to avoid over-crushing and simplify the process route.
It achieves efficient crushing of silicon waste into small particles to meet subsequent casting requirements, reduces energy consumption, improves work efficiency, prevents clogging of cone mesh and filter screen, and simplifies the operation process.
Smart Images
Figure CN224332261U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of metal silicon crushing equipment, specifically to a crushing device for metal silicon recycling and casting. Background Technology
[0002] Metallic silicon, also known as industrial silicon, is primarily used as an additive in non-ferrous alloys. It is produced by smelting quartz and coke in an electric furnace. Its main component is silicon, with a content of approximately 98%, but it contains impurities such as iron, aluminum, and calcium, and is hard and brittle. The recycling and casting of metallic silicon is a multi-stage process aimed at remelting and purifying waste silicon materials, scraps, or silicon-containing waste, and then casting them into usable silicon ingots or silicon products. Before smelting, large pieces of waste must be crushed to a suitable size for melting using a crushing device. Crushing is a crucial pretreatment step that directly affects subsequent smelting efficiency and product quality.
[0003] Currently, when using crushing devices to crush recycled waste, the hard and brittle nature of silicon often results in poor crushing effects. The crushed fragments are of varying sizes; larger fragments lead to slower melting speeds. Furthermore, most existing crushing mechanisms use crushing rollers, which are prone to over-crushing, resulting in excessively fine fragments that are easily scattered and oxidized, reducing yield and failing to meet the requirements of silicon recycling casting, thus lowering the process efficiency. Secondly, to obtain fragments with the required particle size, a separate screening device is often required after crushing, which undoubtedly increases energy consumption and construction costs, prolongs the process, and reduces work efficiency. Therefore, developing a simple-to-operate, highly efficient, and effective crushing device for silicon recycling casting is objectively necessary. Utility Model Content
[0004] The purpose of this invention is to provide a metal silicon recycling and casting crushing device that is easy to operate, has high working efficiency, and has good crushing effect.
[0005] The purpose of this utility model is achieved as follows: It includes a conical shell, a feed pipe, and a discharge pipe. The conical shell has a feed end plate at its small end and a discharge end plate at its large end. A horizontal shaft is concentrically arranged inside the conical shell. One end of the horizontal shaft is connected to a main motor mounted on the discharge end plate, and the other end is rotatably connected to the feed end plate. A conical mesh is concentrically arranged in the annular space between the horizontal shaft and the conical shell. The large end of the conical mesh is rotatably connected to the discharge end plate, and the small end is provided with a conical cylinder. The end of the conical cylinder is rotatably connected to the feed end plate. Inside the conical mesh... Several sets of crushing mechanisms are arranged along the length of the horizontal axis. Each set of crushing mechanisms includes multiple connecting rods evenly distributed on the horizontal axis. The ends of the connecting rods are rotatably connected to hammers. The feed pipe is set on the feed end plate inside the cone, and the discharge pipe is set on the discharge end plate below the cone mesh. A dust storage box is set at the bottom of the cone shell below the cone mesh. An opening is machined on the cone shell inside the dust storage box. A filter screen with a mesh size smaller than that of the cone mesh is set on the opening. A drive mechanism for driving the cone and cone mesh to rotate is set on the cone shell.
[0006] Furthermore, the drive mechanism includes a meshing gear ring and a gear. The gear ring is mounted on the outer wall of the cone, the gear extends out of the cone, and an auxiliary motor is mounted on the outer wall of the cone. The output shaft of the auxiliary motor is connected to the gear drive.
[0007] Furthermore, an annular plate is provided on the cone cylinder between the drive mechanism and the cone mesh, and the edge of the annular plate is rotatably sealed to the cone shell.
[0008] Furthermore, the connecting rods of the two adjacent sets of pulverizing mechanisms are arranged in an alternating manner.
[0009] Furthermore, strip-shaped lifting plates are provided on the inner wall of the cone mesh, and the length direction of the lifting plates is consistent with the length direction of the cone mesh.
[0010] Furthermore, multiple material-separating rings are spaced apart along the length of the inner wall of the cone mesh, and the material-separating rings are provided with material-passing openings.
[0011] Furthermore, a dust discharge port is provided at the top of the cone shell near the discharge end plate. A blower and a dust collector are connected to the dust discharge port in sequence via pipelines. The dust discharge port of the dust collector is connected to the ash storage box via pipelines.
[0012] Furthermore, a reinforcing rod is provided between adjacent connecting rods of the same set of churning mechanisms.
[0013] Furthermore, the hammer is equipped with several protruding spikes.
[0014] When this invention is in operation, the main motor is started, driving the horizontal shaft, connecting rod, and striking hammer to rotate. This activates the drive mechanism, which in turn rotates the cone and cone mesh, feeding the recovered silicon metal waste from the feed pipe into the cone. Under gravity, the silicon metal waste moves towards the cone mesh. As it enters the cone mesh, it is continuously struck by the striking hammer as it moves towards the discharge end plate. The striking hammers impact, shear, and collide with the silicon metal waste to achieve crushing. During this crushing process, smaller silicon metal particles are further crushed. Silicon waste can fall through the cone mesh in time, while larger particles of silicon waste remain inside the cone mesh and continue to be struck by the hammer until they are broken into smaller particles that fall through the mesh. The smaller particles of silicon waste then fall onto the filter screen, which has even smaller meshes. This filter screen can filter out silicon waste particles and powder smaller than the set size. The silicon waste particles that remain on the filter screen within a certain size range are considered qualified silicon waste and are discharged from the outlet pipe for subsequent recycling processes such as casting. In this invention, a high-speed rotating hammer is used to crush silicon waste. The hammer exerts a strong impact on the silicon waste, resulting in a large crushing ratio. A single crushing operation can achieve a small particle size. Compared to existing crushing methods that mostly use crushing rollers, the silicon waste is subjected to direct impact from the hammer, rather than compression, reducing over-crushing. This hammer crushing method can quickly crush silicon waste into small particles with high efficiency while avoiding over-crushing, ensuring the particle size is within a certain range and achieving good agitation, meeting the requirements for subsequent silicon recycling, casting, and smelting. Secondly, this invention performs filtration during silicon waste crushing. A conical mesh is used to filter small silicon waste particles, and a filter screen is used to filter silicon waste particles and powder smaller than a set value. After the first filtration, the filter screen retains silicon metal waste particles within a certain size range that meet the usage requirements. Furthermore, during operation, the rotating cone and cone screen components promote the movement of the silicon metal waste towards the discharge end plate and also allow for material turning, improving crushing efficiency and effect. Simultaneously, the continuous impact of the hammer on the silicon metal waste, along with the splashing of fragments, inevitably generates vibration. This vibration dislodges debris clogging the cone and filter screens, preventing fine particles from adhering and effectively preventing clogging. This ensures efficient filtration of the silicon metal waste particles and maintains the normal operation of the entire device. This device only requires feeding the waste into the cone shell for automatic crushing and screening, eliminating the need for a separate screening device, reducing energy consumption, shortening the process route, increasing efficiency, and simplifying operation. In summary, this invention offers advantages such as simple operation, high efficiency, and excellent crushing effect. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a cross-sectional view of AA in this utility model;
[0017] In the diagram: 1-conical shell, 2-feed pipe, 3-discharge pipe, 4-horizontal shaft, 5-main motor, 6-conical mesh, 7-conical cylinder, 8-connecting rod, 9-impact hammer, 10-ash storage box, 11-filter screen, 12-gear ring, 13-gear, 14-auxiliary motor, 15-ring plate, 16-lifting plate, 17-separating ring, 18-material passage opening, 19-exhaust fan, 20-dust collector, 21-reinforcing rod, 22-spiky bar, 23-stirring rod. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the present invention shall fall within the protection scope of the present invention.
[0019] like Figures 1-2 As shown, this utility model includes a conical shell 1, a feed pipe 2, and a discharge pipe 3. The conical shell 1 is placed horizontally. A feed end plate is provided at the small end of the conical shell 1, and a discharge end plate is provided at the large end. A horizontal shaft 4 is concentrically arranged inside the conical shell 1. One end of the horizontal shaft 4 is connected to a main motor 5 mounted on the discharge end plate. The main motor 5 is an existing motor; its power, speed, and other parameters are procured and installed according to actual conditions. The other end is rotatably connected to the feed end plate. A conical mesh 6 is concentrically arranged in the annular space between the horizontal shaft 4 and the conical shell 1. The large end of the conical mesh 6 is rotatably connected to the discharge end plate, and a conical cylinder 7 is provided at the small end. The end of the conical cylinder 7 is rotatably connected to the feed end plate. Several sets of crushing mechanisms are arranged along the length of the horizontal shaft 4 inside the cone mesh 6. Each set of crushing mechanisms includes multiple connecting rods 8 evenly distributed on the horizontal shaft 4. The ends of the connecting rods 8 are rotatably connected to hammers 9. The feed pipe 2 is set on the feed end plate inside the cone cylinder 7. The discharge pipe 3 is set on the discharge end plate below the cone mesh 6. The bottom of the cone shell 1 below the cone mesh 6 is provided with a ash storage box 10. An opening is machined on the cone shell 1 above the ash storage box 10. A filter screen 11 with a mesh size smaller than that of the cone mesh 6 is provided on the opening. A drive mechanism for driving the cone cylinder 7 to rotate is provided on the cone shell 1. The drive mechanism is existing technology and is used to drive the cone cylinder 7 to rotate. In this invention, generally speaking, the horizontal axis 4 drives the hammer 9 to rotate at high speed, which is convenient for crushing the silicon metal waste. The cone cylinder 7 and the cone mesh 6 rotate at a relatively slow speed, which is convenient for turning the silicon metal waste and for filtering the waste particles. In actual use, the rotation speed, direction and other parameters of each are determined according to actual needs. Generally speaking, the rotation speed of the cone cylinder 7 and the cone mesh 6 is much lower than the rotation speed of the horizontal axis 4.
[0020] When this invention is in operation, the main motor 5 is started, which drives the horizontal shaft 4, connecting rod 8, and striking hammer 9 to rotate. This starts the drive mechanism, which in turn drives the cone 7 and cone mesh 6 to rotate. The recovered silicon metal waste is fed into the cone 7 through the feed pipe 2. Under the influence of gravity, the silicon metal waste moves towards the cone mesh 6. As the waste enters the cone mesh 6, it is continuously struck by the striking hammer 9 as it moves towards the discharge end plate. The striking hammer 9 impacts, shears, and collides with the silicon metal waste to achieve crushing. During the crushing process, smaller particles are crushed. Metallic silicon waste can fall through the mesh of the cone mesh 6 in a timely manner. Larger particles of metallic silicon waste remain inside the cone mesh 6 and continue to be struck by the hammer 9 until they are broken into smaller particles that fall through the mesh of the cone mesh 6. The smaller particles of metallic silicon waste then fall onto the filter screen 11, which has even smaller meshes. This filter screen can filter out metallic silicon waste particles and powder smaller than the set value. The metallic silicon waste particles that remain on the filter screen 11 within a certain size range are considered qualified metallic silicon waste and are discharged from the discharge pipe 3 for subsequent casting and other recycling processes.
[0021] In this invention, a high-speed rotating hammer 9 is used to crush silicon waste. The hammer 9 generates a strong impact on the silicon waste, resulting in a large crushing ratio. A single crushing operation can achieve a small particle size. Compared to existing crushing methods that mostly use crushing rollers, the silicon waste is subjected to direct impact from the hammer 9, rather than compression, reducing over-crushing. This hammer-based crushing method can quickly crush silicon waste into small particles with high efficiency while avoiding over-crushing, ensuring the particle size is within a certain range and achieving good agitation, meeting the requirements for subsequent silicon recycling, casting, and smelting. Secondly, this invention performs filtration during silicon waste crushing. A conical mesh 6 filters small silicon waste particles, and a filter screen 11 filters silicon waste particles and powder smaller than a set size. After two filtrations... The filter screen 11 retains silicon metal waste particles with a particle size within a certain range that meet the usage requirements. In addition, during the operation of this utility model, since the cone 7 and cone screen 6 are rotating, the silicon metal waste is not only moved towards the discharge end plate, but also turned over, which facilitates the improvement of crushing efficiency and crushing effect. At the same time, the hammer 9 is constantly striking the silicon metal waste, and the splashing of fragments inevitably generates vibration. The vibration can shake off the fragments blocking the mesh of the cone screen 6 and filter screen 11, and prevent fine materials from adhering to the cone screen 6 and filter screen 11, thereby effectively preventing the cone screen 6 and filter screen 11 from clogging, ensuring efficient filtration of silicon metal waste particles, and maintaining the normal operation of the entire device. This device only requires the waste to be put into the cone shell 1, and it can automatically crush and filter the waste. There is no need to set up a separate screening device, which reduces energy consumption, shortens the process route, has high working efficiency, and is easy to operate.
[0022] The drive mechanism includes a meshing gear ring 12 and a gear 13. The gear ring 12 is mounted on the outer wall of the cone cylinder 7, and the gear 13 extends out of the cone shell 1. An auxiliary motor 14 is mounted on the outer wall of the cone shell 1, and the output shaft of the auxiliary motor 14 is connected to the gear 13 for transmission. During operation, the auxiliary motor 14 sequentially drives the gear 13 and the gear ring 12 to rotate, which in turn drives the cone shell 1 to rotate, and the cone shell 1 drives the cone mesh 6 to rotate. In actual installation, other types of drive structures can also be used, as long as they can drive the cone shell 1 and the cone mesh 6 to rotate during operation.
[0023] A ring plate 15 is provided on the cone 7 between the drive mechanism and the cone mesh 6. The edge of the ring plate 15 is rotatably sealed to the cone shell 1. The drive mechanism is used to drive the cone 7 to rotate. However, when this utility model is running, a certain amount of dust will be generated. This dust may come into contact with the drive mechanism and may have an adverse effect on the normal operation of the drive mechanism, causing damage to various components of the drive mechanism. In order to avoid this problem, the ring plate 15 is provided. After this arrangement, a relatively sealed closed space is formed between the ring plate 15, the cone shell 1, the feed end plate and the cone 7. The drive mechanism is located in this closed space, which can prevent the dust from coming into contact with the drive mechanism and improve the service life of the drive mechanism.
[0024] Preferably, in order to improve the crushing efficiency of silicon metal waste, the connecting rods 8 of the two adjacent crushing mechanisms are arranged in an alternating manner.
[0025] A strip-shaped lifting plate 16 is provided on the inner wall of the cone mesh 6, and the length direction of the lifting plate 16 is consistent with the length direction of the cone mesh 6. The lifting plate 16 rotates synchronously with the cone mesh 6, and the lifting plate 16 can drive the silicon waste upward to move a certain distance, and then fall naturally under the action of gravity. This process plays the role of lifting and turning the material, so that the silicon waste can be fully crushed and the crushing efficiency of silicon waste can be improved.
[0026] Multiple material-separating rings 17 are spaced along the length of the inner wall of the cone mesh 6, and each material-separating ring 17 has a material-passing opening 18. When the silicon metal waste moves to the position of the material-separating ring 17, it is blocked by the material-separating ring 17 and will not continue to move. The hammer 9 at that position then continues to crush it. As the cone mesh 6 rotates, the material-separating rings 17 also rotate. When the material-passing opening 18 rotates downwards, some of the silicon metal waste passes through for further crushing. The multiple material-separating rings 17 block the silicon metal waste, reducing its movement speed on the cone 6, ensuring that the silicon metal waste is fully crushed by the hammer 9, preventing the silicon metal waste from being undercrushed, and improving the crushing effect.
[0027] A dust discharge port is provided at the top of the cone shell 1 near the discharge end plate. A blower 19 and a dust collector 20 are connected to the dust discharge port via pipelines. Both the blower 19 and the dust collector 20 are existing equipment. The dust discharge port of the dust collector 20 is connected to the ash storage box 10 via a pipeline. During operation, the metal silicon waste is crushed using the hammer 9, inevitably generating some dust. This dust will pollute the surrounding environment and waste materials. To solve this problem, the blower 19 extracts the dust generated inside the cone shell 1 and creates a negative pressure inside the cone shell 1 to prevent the dust from escaping. Then, the dust collector 20 removes the dust, filtering out the fine powder and sending it to the ash storage box 10. Subsequent processes such as compression and crushing can then be performed for recycling, reducing the waste of metal silicon waste.
[0028] A reinforcing rod 21 is provided between two adjacent connecting rods 8 in the same set of crushing mechanism. During operation, the hammer 9 strikes the silicon waste and generates a large impact force. The reaction force generated by this force is transmitted to the connecting rod 8, which can easily cause the connecting rod 8 to deform and be damaged. However, after setting the reinforcing rod 21, the connecting rods 8 can be connected into a whole, which improves the overall strength and rigidity and extends the service life of the connecting rod 8.
[0029] The hammer 9 is provided with several protruding spikes 22. The spikes 22 on the hammer 9 have two functions. First, they can separate the hammer 9 body from the silicon waste, reducing the direct collision and impact on the hammer 9 and extending its service life. Second, the spikes 22 have a smaller contact area with the silicon waste, which can concentrate the force to crush the silicon waste and improve the crushing efficiency of the silicon waste.
[0030] In actual operation, several stirring rods 23 can be set on the outer wall of the cone mesh 6 along its length. The stirring rods 23 rotate together with the cone mesh 6. During the rotation, the metal silicon waste particles falling on the filter screen 11 can be stirred to improve the filtration efficiency of the metal silicon waste particles. At the same time, it can prevent the metal silicon waste particles from accumulating on the filter screen 11 and causing blockage. It can also promote the metal silicon waste particles to move towards the discharge pipe 3, so that waste particles of suitable particle size can be discharged.
Claims
1. A crushing device for recovering and casting metallic silicon, comprising a conical shell (1), a feed pipe (2), and a discharge pipe (3), characterized in that: The conical shell (1) has a feed end plate at its small port and a discharge end plate at its large port. A horizontal shaft (4) is concentrically arranged inside the conical shell (1). One end of the horizontal shaft (4) is connected to the main motor (5) mounted on the discharge end plate, and the other end is rotatably connected to the feed end plate. A conical mesh (6) is concentrically arranged in the annular space between the horizontal shaft (4) and the conical shell (1). The large port of the conical mesh (6) is rotatably connected to the discharge end plate, and a conical cylinder (7) is arranged at its small port. The end of the conical cylinder (7) is rotatably connected to the feed end plate. Several sets of crushers are arranged along the length of the horizontal shaft (4) inside the conical mesh (6). The structure includes multiple connecting rods (8) evenly distributed on the horizontal shaft (4) in each group of crushing mechanisms. The ends of the connecting rods (8) are rotatably connected to hammers (9). The feed pipe (2) is set on the feed end plate inside the cone (7), and the discharge pipe (3) is set on the discharge end plate below the cone mesh (6). The bottom of the cone shell (1) below the cone mesh (6) is provided with a ash storage box (10). An opening is processed on the cone shell (1) above the ash storage box (10), and a filter screen (11) with a mesh size smaller than that of the cone mesh (6) is provided on the opening. A drive mechanism for driving the cone (7) to rotate is provided on the cone shell (1).
2. The crushing device for recovering and casting metallic silicon according to claim 1, characterized in that: The drive mechanism includes a meshing gear ring (12) and a gear (13). The gear ring (12) is mounted on the outer wall of the cone (7), and the gear (13) extends out of the cone shell (1). An auxiliary motor (14) is mounted on the outer wall of the cone shell (1), and the output shaft of the auxiliary motor (14) is connected to the gear (13) in a transmission connection.
3. The crushing device for recovering and casting metallic silicon according to claim 1, characterized in that: A ring plate (15) is provided on the cone cylinder (7) between the drive mechanism and the cone mesh (6), and the edge of the ring plate (15) is rotatably sealed to the cone shell (1).
4. The crushing device for recovering and casting metallic silicon according to claim 1, characterized in that: The connecting rods (8) of the two adjacent crushing mechanisms are arranged in an alternating manner.
5. The crushing device for recovering and casting metallic silicon according to claim 1, characterized in that: The inner wall of the cone mesh (6) is provided with a strip-shaped lifting plate (16), and the length direction of the lifting plate (16) is consistent with the length direction of the cone mesh (6).
6. The crushing device for recovering and casting metallic silicon according to claim 1, characterized in that: Multiple material-separating rings (17) are spaced apart along the length of the inner wall of the cone mesh (6), and material-separating rings (17) are provided with material-passing openings (18).
7. The crushing device for recovering and casting metallic silicon according to claim 1, characterized in that: A dust discharge port is provided at the top of the cone shell (1) near the discharge end plate. A blower (19) and a dust collector (20) are connected to the dust discharge port in sequence via pipelines. The dust discharge port of the dust collector (20) is connected to the ash storage box (10) via pipelines.
8. The crushing device for recovering and casting metallic silicon according to claim 1, characterized in that: A reinforcing rod (21) is provided between two adjacent connecting rods (8) of the same set of crushing mechanism.
9. The crushing device for recovering and casting metallic silicon according to claim 1, characterized in that: The hammer (9) is provided with several protruding spikes (22).