Silicon powder compaction system

Abstract

The utility model discloses a kind of silicon powder compaction systems, it is related to silicon powder production technical field, including the sealing assembly of being located in closed cavity and the material bag with upper and lower bag mouth, the sealing assembly is set to two groups and is arranged in upside-down state, to make the upper and lower two bag mouths of material bag can be sealed, this compaction system further include the compression plate for being located in closed cavity and being used to compact material bag middle part, with closed cavity intercommunication arrangement suction duct and be set on closed cavity reciprocating member, reciprocating member is used to drive material bag to make shaking action, to realize the scattering of silicon powder attached to material bag on it.The utility model is closed by the closed design of closed cavity, to create sealed environment for material bag, effectively prevent silicon powder from leaking and polluting environment.The introduction of suction duct can remove silicon powder scattered in closed cavity in time, and suction duct can suction action in closed cavity at any time sequence, maintain cavity cleanliness.

Description

Technical Field

[0001] This utility model relates to the field of silicon powder production technology, specifically to a silicon powder compaction system. Background Technology

[0002] In the process of silicon powder recycling and processing, silicon powder generally needs to be compressed to reduce the air content in the silicon powder and increase the overall density of the silicon powder.

[0003] A search revealed that patent document CN220075688U discloses a silicon powder pressing device, which includes a pressing device, a feeding device, and a discharging device. The pressing device includes a cylinder, a pressing block, and a driving structure. The cylinder opening faces upward, and the pressing block is movably positioned above the cylinder to press the silicon powder package inside the cylinder into a silicon powder cake. The driving structure is located inside the cylinder and is used to transport the silicon powder cake to the opening. The feeding device is located on one side of the pressing device and is used to transport the silicon powder package to the opening. The discharging device is located on the other side of the pressing device and is used to transport the silicon powder cake from the opening to a predetermined position.

[0004] The aforementioned equipment places silicon powder packets inside a cylinder, and then uses a compactor block to compact the packets. While the silicon powder packets themselves prevent dust dispersion during compaction, some dust still inevitably falls into the cylinder. In this vertically arranged structure, dust removal from the cylinder often relies on manually inserting a negative pressure suction tube into the cylinder. However, this suction method can only be used after compaction, easily causing dust to adhere to the inner wall of the cylinder. Furthermore, cleaning the dust adhering to the inner wall requires manual adjustment of the suction tube at multiple angles, making the operation cumbersome and resulting in poor cleaning effectiveness.

[0005] To address these issues, we propose a silicon powder compaction system. Utility Model Content

[0006] The purpose of this invention is to address the problems in the prior art by proposing a silicon powder compaction system. This compaction system, through the installation of suction pipes, can not only perform suction treatment on the sealed cavity at any time to ensure the cleanliness of the sealed cavity, but also, through the shaking design applied to the material bag, reduce powder adhesion and further ensure the cleanliness of the sealed cavity.

[0007] To solve the above problems, this utility model provides the following technical solution:

[0008] A silicon powder compaction system includes a sealing assembly disposed in a sealed cavity and a material bag with upper and lower openings. The sealing assembly is configured in two sets and arranged vertically so that both the upper and lower openings of the material bag can be sealed. The compaction system also includes a pressure plate disposed in the sealed cavity for compacting the middle part of the material bag, a suction pipe communicating with the sealed cavity, and a reciprocating member disposed on the sealed cavity. The reciprocating member is used to drive the material bag to shake, so as to disperse the silicon powder adhering to the material bag.

[0009] As a further embodiment of this utility model: the sealing assembly includes a fixed block and a moving block disposed in a sealed cavity. The moving block is arranged opposite to the fixed block and can move toward or adjacent to the fixed block. The bag is located between the moving block and the fixed block and its two sides are respectively connected to the moving block and the fixed block, so that when the moving block moves toward the fixed block to the point of contact with the fixed block, one opening of the bag is sealed.

[0010] As a further embodiment of this utility model: a first driving member for driving the moving block to move is provided on the sealed cavity, and the first driving member constitutes the reciprocating action member.

[0011] As a further embodiment of this utility model: the compaction system also includes a cylinder, the inner cavity of which constitutes the sealed cavity, and a feed pipe with one end located in the sealed cavity is provided at the top of the cylinder, and the feed pipe end is connected to the top opening of the bag through an adapter expansion cylinder.

[0012] As a further embodiment of this utility model, the compaction system also includes a frame for mounting the cylinder, and a cover plate for sealing the bottom opening of the cylinder is provided on the frame. The cover plate is driven by a third driving member provided on the frame to open or seal the opening.

[0013] As a further embodiment of this invention: the compaction system also includes a funnel located at the bottom opening of the cylinder and a conveying assembly for receiving the silicon cake. The large-diameter end of the funnel is located below the bottom opening of the bag, and the small-diameter end of the funnel is located above the conveying assembly.

[0014] As a further embodiment of this utility model: the fixed block and the moving block are respectively provided with a concave part and a convex part on their adjacent sides, and the concave part and the convex part are adapted to engage, so that when the moving block moves toward the fixed block, the sealing of the material bag is achieved by the adapted engagement of the convex part and the concave part.

[0015] As a further embodiment of this utility model: the pressure plate is located between the two sealing components and can move towards or away from the bag.

[0016] As a further embodiment of this utility model: the pressure plates are configured in multiple sets and evenly distributed outside the material bag, and the multiple sets of pressure plates form a compaction zone.

[0017] As a further embodiment of this utility model: a placement plate for mounting fixed blocks is fixedly provided in the sealed cavity, and the pressure plate is set in three sets, and the three sets of pressure plates and placement plates are arranged in a rectangular layout around the material bag.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This compaction system utilizes a closed-loop cavity design to create a sealed environment for the material bag, effectively preventing silicon powder leakage and environmental contamination. The introduction of a suction pipe allows for timely removal of scattered silicon powder within the sealed cavity, and the suction pipe can perform suction actions at any time within the sealed cavity, maintaining its cleanliness. Simultaneously, the innovative design of a reciprocating actuator driving the material bag's vibration significantly reduces powder adhesion, further ensuring the cleanliness of the cavity.

[0020] 2. The dual-function integrated design of the first drive component allows for multiple uses in one machine. A single power source enables both the sealing motion of the moving block and the reciprocating action required for bag shaking. This mechatronics design reduces equipment complexity and the number of drive components, while ensuring precise timing coordination between sealing and powder cleaning actions. Optimized energy transfer paths significantly improve system energy efficiency and reduce operating costs.

[0021] 3. The tapered transition design between the feed pipe and the adapter expander increases the material flow cross-section while maintaining a tight seal, effectively preventing bridging and clogging by high-density silicon powder. The modular cavity structure facilitates cleaning and maintenance and provides controllable space for pressure balancing.

[0022] 4. The cover plate controlled by the third drive unit realizes the automatic opening and closing of the bottom of the cylinder, ensuring that the silicon cake can be quickly transferred after it is formed.

[0023] 5. The centered placement of the pressure plate between the two sealing components spatially isolates the compaction action from the upper and lower sealing processes. The bidirectional adjustable pressure plate can perform progressive compaction and quickly reset after compaction, creating space for bag shaking. This time-space separation control strategy significantly improves the efficiency of a single operation cycle.

[0024] 6. The annular compaction zone formed by multiple sets of evenly distributed pressure plates eliminates the density unevenness problem caused by traditional single-sided compaction through multi-directional synchronous pressure. Uniform circumferential pressure promotes the reorientation of silicon powder particles, improving the density of the silicon cake structure. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a front view structural diagram of the present invention;

[0027] Figure 2 yes Figure 1 A magnified schematic diagram of a portion of the structure.

[0028] In the diagram: 1. Material bag; 2. Fixed block; 201. Recess; 3. Moving block; 301. Protrusion; 4. Pressure plate; 5. Cylinder; 501. Sealed cavity; 6. Placement plate; 7. Feed pipe; 8. Transfer expansion cylinder; 9. First driving component; 10. Second driving component; 11. Funnel; 12. Conveying assembly; 13. Frame; 14. Suction pipe; 15. Cover plate; 16. Third driving component; 17. Exhaust fan. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] like Figure 1 As shown, a silicon powder compaction and conveying device includes a cylinder 5. The inner cavity of the cylinder 5 forms a sealed cavity 501. An opening is provided at the bottom of the sealed cavity 501. In this embodiment, the opening is in an open state, so that the sealed cavity 501 is in communication with the outside. A vertically arranged placement plate 6 is provided in the sealed cavity 501. A fixed block 2 is fixedly provided on the placement plate 6. At the same time, a movable block 3 is movably arranged in the sealed cavity 501 opposite to the fixed block 2. The movable block 3 and the fixed block 2 are arranged horizontally. A first driving member 9 is fixedly provided on the cylinder 5. The first driving member 9 can drive the movable block 3 to move towards the fixed block 2. The same material bag 1 (which can be a ton bag or the like conventionally used in the prior art) is fixedly provided on the side close to the fixed block 2 and the movable block 3. The material bag 1 has an upper and lower bag opening. At this time, the fixed block 2 and the movable block 3 together form a sealing assembly. The sealing assembly is set as two sets and is arranged at the upper and lower positions of the material bag 1 respectively.

[0032] Under normal circumstances, the moving block 3 is far from the fixed block 2, and both the upper and lower openings of the material bag 1 are open. This state can be achieved by... Figure 1The top of the cylinder 5 is equipped with a feed pipe 7. One end of the feed pipe 7 is connected to the top opening of the bag 1 via a connecting expansion cylinder 8. When it is necessary to compact the silicon powder, the sealing assembly below can be used. That is, the first driving component 9 below drives the moving block 3 towards the fixed block 2 until the moving block 3 and the fixed block 2 come into contact. Since the two sides of the bag 1 are fixedly connected to the adjacent sides of the fixed block 2 and the moving block 3 respectively, the movement of the moving block 3 towards the fixed block 2 can cause the two sides of the bag 1 to come into contact, thereby sealing the bottom opening of the bag 1. At this time, the bag 1 is in a state of bottom sealing and top opening. Then, silicon powder is fed to the top opening of the bag 1 by the feed pipe 7. After a certain amount is fed, the top opening of the bag 1 is sealed by the sealing assembly above. At this time, the bag 1 is in a state of bottom sealing and top sealing, and a certain amount of silicon powder is temporarily stored inside.

[0033] To achieve the compaction of silicon powder, this application includes a second driving member 10 fixedly mounted on the cylinder 5. The actuating end of the second driving member 10 extends into the cylinder 5, and a pressure plate 4 is fixedly mounted on this actuating end. Multiple pressure plates 4 can be configured and evenly distributed around the periphery of the material bag 1, forming a compaction zone between the multiple sets of pressure plates 4. In the presence of the placement plate 6, this application preferably uses three sets of pressure plates 4, arranged in a rectangular layout around the periphery of the material bag 1. Figure 1 As shown, the placement plate 6 is located on the left, one pressure plate 4 is located on the right, another pressure plate 4 is located on the front, and the last pressure plate 4 is located on the back (not shown in the figure). During the compaction process, the pressure plate 4 on the right moves towards the placement plate 6, and the two pressure plates 4 on the front and back move closer to each other, thereby compressing the silicon powder in the material bag 1. During the compaction process, the air in the material bag 1 can be discharged due to the breathability of the material bag 1, so the silicon powder will be compacted into a cake shape to form a silicon cake. At this time, the seal of the material bag 1 by the lower sealing assembly is released, so that the silicon cake falls to the bottom of the cylinder 5. When the bottom opening of the cylinder 5 is opened, the silicon cake will fall directly down.

[0034] It should be noted that, without interfering with the movement of the moving block 3, the length of the pressure plate 4 needs to be set long enough to prevent some silicon powder from not being compacted. In order to perform good compaction of the silicon powder, multiple compaction operations can be performed by the cooperation of the moving block 3 and the stationary block 2.

[0035] In order to automatically collect and transport silicon cakes, this application also includes a frame 13, a cylinder 5 is mounted on the frame 13, and a funnel 11 is provided at the bottom opening of the cylinder 5. The funnel 11 serves to guide and collect the silicon cakes. A conveying assembly (such as a drive belt) 12 is provided on the frame 13. The conveying assembly 12 is located below the funnel 11. The silicon cakes guided and transported by the funnel 11 can fall onto the conveying assembly 12 and be conveyed to the next process via the conveying assembly 12.

[0036] like Figure 2 As shown, in order to improve the sealing effect of the sealing assembly on the bag 1, a recess 201 and a protrusion 301 are respectively provided on the near side of the fixed block 2 and the moving block 3 (or a protrusion 301 and a recess 201 are respectively provided on the near side of the fixed block 2 and the moving block 3), and the recess 201 and the protrusion 301 are adapted to engage so that when the moving block 3 moves toward the fixed block 2, the adaptable insertion of the protrusion 301 and the recess 201 can achieve a good fit and seal on the bag 1, ensuring that the silicon powder in the bag 1 will not escape from the seal during the pressing process of the pressure plate 4.

[0037] Example 2:

[0038] Furthermore, this embodiment also proposes a silicon powder compaction system. Based on the first embodiment, this system adds a suction pipe 14 connected to the sealed cavity 501. The suction pipe 14 is used for suction by the exhaust fan 17. Before the feed pipe 7 delivers silicon powder to the bag 1, the bottom opening of the cylinder 5 is sealed, so that the inner cavity of the cylinder 5 forms a sealed cavity 501. At this time, the sealed cavity 501 is connected to the outside only through the suction pipe 14. After the upper and lower openings of the bag 1 are sealed by the two sealing components, the exhaust fan 17 performs suction work into the sealed cavity 501 through the suction pipe 14. At the same time, the pressure plate 4 can perform compaction work. The silicon powder generated during the compaction process can be drawn away by the suction pipe 14, and the silicon powder will not diffuse in the sealed cavity 501. Furthermore, when the sealing component is released from the bag 1, the silicon cake will fall to the bottom of the cylinder 5. During this process, the suction pipe 14 continues to perform suction. This suction will suck up the uncompacted silicon powder in the bag 1 that falls with the silicon cake. After a period of suction, the bottom opening of the cylinder 5 can be opened to discharge the silicon cake.

[0039] After a prolonged compaction process, silica powder often accumulates on the surface of bag 1. To clean bag 1, several reciprocating components (telescopic rods, etc.) connected to bag 1 can be added to cylinder 5. Figure 1 In the indicated state, the reciprocating actuator can be used to drive the bag 1 to reciprocate and shake on one or both sides, causing the silicon powder on the bag 1 to fall off. At this time, the suction pipe 14 can perform a suction action to suck away the smaller silicon powder particles, while the larger particles will fall directly into the funnel 11 at the bottom of the cylinder 5 for subsequent centralized processing. Of course, the reciprocating actuator can also drive the bag 1 to shake after each feeding.

[0040] Based on the first driving component 9 already set in Embodiment 1, the first driving component 9 can directly replace the reciprocating component. That is, the first driving component 9 can not only drive the moving block 3 to move horizontally to seal the bag 1, but also shake the bag 1 by relying on its reciprocating movement characteristics during the subsequent cleaning process. It can be used for multiple purposes and save production costs.

[0041] To automatically open or close the bottom opening of the cylinder 5, a cover plate 15 is horizontally movable on the frame 13. A third drive unit 16 is also installed on the frame 13 to move the cover plate 15, thus opening or closing the opening. With the cover plate 15 in place, the silicon cake inside the bag 1 falls onto the cover plate 15 via the funnel 11. The third drive unit 16 then moves the cover plate 15 horizontally to open the outlet, allowing the silicon cake to fall onto the conveying assembly 12 below.

[0042] It should be noted that the first driving component 9, the second driving component 10, the third driving component 16, and the reciprocating component in this paper are all conventional technical means in the prior art, such as telescopic rods, electric push rods, cylinders, etc. This paper does not restrict the selection of this type, as long as it can achieve the corresponding telescopic function.

[0043] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A silicon powder compaction system, characterized in that, The system includes a sealing assembly located in a sealed cavity (501) and a material bag (1) with upper and lower openings. The sealing assembly is configured in two sets and arranged in an up-down manner so that both the upper and lower openings of the material bag (1) can be sealed. The compaction system also includes a pressure plate (4) located in the sealed cavity (501) and used to compact the middle part of the material bag (1), a suction pipe (14) connected to the sealed cavity (501), and a reciprocating member located on the sealed cavity (501). The reciprocating member is used to drive the material bag (1) to make a shaking motion so as to disperse the silicon powder attached to the material bag (1).

2. The silicon powder compaction system according to claim 1, characterized in that, The sealing assembly includes a fixed block (2) and a movable block (3) disposed in a sealed cavity (501). The movable block (3) is arranged opposite to the fixed block (2) and can move toward or adjacent to the fixed block (2). The bag (1) is located between the movable block (3) and the fixed block (2) and its two sides are connected to the movable block (3) and the fixed block (2) respectively, so that when the movable block (3) moves toward the fixed block (2) to the point of contact with the fixed block (2), one opening of the bag (1) is sealed.

3. A silicon powder compaction system according to claim 2, characterized in that, The sealed cavity (501) is provided with a first driving member (9) for driving the moving block (3) to move, and the first driving member (9) constitutes the reciprocating action member.

4. A silicon powder compaction system according to any one of claims 1-3, characterized in that, The compaction system also includes a cylinder (5), the inner cavity of which constitutes the sealed cavity (501). A feed pipe (7) is provided at the top of the cylinder (5), with one end located in the sealed cavity (501), and the end of the feed pipe (7) is connected to the top opening of the bag (1) through a converter expansion cylinder (8).

5. A silicon powder compaction system according to claim 4, characterized in that, The compaction system also includes a frame (13) for mounting the cylinder (5), on which a cover plate (15) is provided for sealing the bottom opening of the cylinder (5), and the cover plate (15) is driven by a third drive member (16) provided on the frame (13) to open or seal the opening.

6. A silicon powder compaction system according to claim 5, characterized in that, The compaction system also includes a funnel (11) located at the bottom opening of the cylinder (5) and a conveying assembly (12) for receiving the silicon cake. The large diameter end of the funnel (11) is located below the bottom opening of the bag (1), and the small diameter end of the funnel (11) is located above the conveying assembly (12).

7. A silicon powder compaction system according to claim 2 or 3, characterized in that, The fixed block (2) and the moving block (3) have a recess (201) and a protrusion (301) respectively on their adjacent sides. The recess (201) and the protrusion (301) are adapted to engage so that when the moving block (3) moves toward the fixed block (2), the bag (1) can be sealed by the adapted engagement of the protrusion (301) and the recess (201).

8. A silicon powder compaction system according to any one of claims 1-3, characterized in that, The pressure plate (4) is located between the two sealing components and can move toward or away from the bag (1).

9. A silicon powder compaction system according to any one of claims 1-3, characterized in that, The pressure plates (4) are set in multiple groups and evenly distributed outside the material bag (1), and the multiple groups of pressure plates (4) form a compaction zone.

10. A silicon powder compaction system according to any one of claims 1-3, characterized in that, The sealed cavity (501) is fixedly provided with a placement plate (6) for installing the fixed block (2). The pressure plate (4) is set in three groups, and the three groups of pressure plates (4) and placement plates (6) are arranged in a rectangular layout around the material bag (1).

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