Silicon powder compaction delivery apparatus

Abstract

The utility model discloses a kind of silicon powder compaction conveying equipment, it is related to silicon powder production technical field, including the sealing assembly of being located in cylinder and the material bag with upper and lower bag mouth, sealing assembly includes the fixed block of being located in cylinder and moving block, moving block is oppositely arranged with fixed block and can be similar or adjacent action to fixed block, material bag is located between moving block and fixed block and its two sides are connected with moving block and fixed block, to when moving block is similar action to fixed block and is abutted with fixed block, material bag bag mouth is sealed, the sealing assembly is set to two groups and is arranged in upper and lower state, to make the upper and lower two bag mouths of material bag can be sealed.The utility model realizes the independent sealing control of material bag two ends by the collaborative design of upper and lower double sealing assembly, moving block and fixed block cooperation can complete the accurate closure of bag mouth, ensure the sealing reliability of silicon powder packaging process, compaction movement design between two sealing assemblies of pressing plate, material bag can be compacted after sealing, effectively improve powder filling density.

Description

Technical Field

[0001] This utility model relates to the field of silicon powder production technology, specifically to a silicon powder compaction and conveying equipment. 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] Although the aforementioned equipment achieves the compaction and automated loading and unloading of silicon powder through the corresponding arrangement of the pressing device, feeding device, and unloading device, it still has some drawbacks. For example, during the silicon powder cake unloading process, the silicon cake is driven upward by the drive structure. During this process, the drive structure needs to move upward to a certain stroke before it can push the silicon cake out of the cylinder. After pushing it out, the drive structure also needs to perform a downward reset movement to complete a complete unloading action. Therefore, this unloading method takes a long time to complete one unloading action, which will reduce production efficiency.

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

[0006] The purpose of this utility model is to solve the problems in the prior art by proposing a silicon powder compaction and conveying device. This conveying device achieves rapid feeding of silicon cake through the design of two sets of sealing components and pressure plates. Compared with the feeding method in the prior art that still requires a resetting action, the feeding method of this application is convenient and improves production efficiency.

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

[0008] A silicon powder compaction and conveying device includes a sealing assembly disposed within a cylinder and a material bag having upper and lower openings. The sealing assembly includes a fixed block and a movable block disposed within the cylinder. The movable block is arranged opposite to the fixed block and can move towards or adjacent to the fixed block. The material bag is located between the movable block and the fixed block, and its two sides are respectively connected to the movable block and the fixed block, so that when the movable block moves towards the fixed block until it abuts against the fixed block, one opening of the material bag is sealed. 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 conveying device also includes a pressure plate disposed within the cylinder, which is located between the two sealing assemblies and can move towards or away from the material bag.

[0009] 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.

[0010] 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.

[0011] As a further embodiment of this utility model: a placement plate for mounting fixed blocks is fixedly provided inside the cylinder, and the pressure plate is set in three sets, with the three sets of pressure plates and placement plates arranged in a rectangular layout around the material bag.

[0012] As a further embodiment of this utility model: the top of the cylinder is provided with a feed pipe with one end located inside it, and the feed pipe end is connected to the top opening of the bag through an adapter expansion cylinder.

[0013] As a further embodiment of this utility model: a first driving member for driving the moving block is fixedly provided on the cylinder.

[0014] As a further embodiment of this utility model, a second driving component for driving the pressure plate to move is fixedly provided on the cylinder.

[0015] As a further embodiment of this utility model, the conveying device 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 material bag, and the small-diameter end of the funnel is located above the conveying assembly.

[0016] As a further embodiment of this utility model: both the first driving member and the second driving member are configured as cylinders.

[0017] As a further embodiment of this invention, the conveying equipment also includes a frame for mounting the cylinder.

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

[0019] 1. This equipment achieves independent sealing control at both ends of the material bag through the coordinated design of upper and lower double sealing components. The moving block and fixed block work together to complete the precise closure of the bag opening, ensuring the sealing reliability of the silicon powder encapsulation process. The compaction motion design of the pressure plate between the two sealing components can compact the material bag after sealing, effectively improving the powder filling density. After compaction, the silicon cake can be quickly discharged by releasing the seal on the bottom opening of the material bag. Compared with the existing discharge method that requires a resetting action, the discharge method of this application is simple to operate, requires less time for a single discharge action, and improves production efficiency.

[0020] 2. The mortise and tenon joint structure of the concave and convex parts creates a mechanical self-locking effect through the forced interlocking of the concave and convex interfaces, significantly improving the sealing compressive strength, making it particularly suitable for the encapsulation requirements of high-density silicon powder. This design eliminates the need for complex sealing materials, reduces maintenance costs, and improves the repeatability of the sealing process.

[0021] 3. The annular compaction zone formed by multiple sets of evenly distributed pressure plates can apply multi-directional and uniform pressure to the material bag. This three-dimensional compaction method effectively eliminates the density gradient caused by unidirectional compaction, ensuring a uniform silicon powder cake structure.

[0022] 4. The rectangular layout of the three sets of pressure plates and the support plate forms a stable mechanical framework, achieving all-around pressure within a compact space. This layout ensures the balance of the pressure torque while allowing for controllable deformation space for the expansion of the material bag. The fixed installation design of the support plate enhances the stability of the block and avoids displacement deviation during compaction.

[0023] 5. The transition connection design of the adapter expander effectively solves the docking problem between the feed pipe and the flexible bag. Its conical structure guides the powder smoothly into the bag, while the flexible connection compensates for displacement deviations caused by equipment vibration. This design significantly reduces the risk of inlet blockage and maintains the integrity of the sealed environment.

[0024] 6. The integrated design of the funnel and conveyor components enables continuous processing of the silicon cake. The tapered funnel guides the silicon cake to completely detach from the cylinder, and its connection design with the conveyor belt ensures smooth product transfer and reduces the risk of breakage. Attached Figure Description

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

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[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 which forms a sealed cavity 501. An opening is provided at the bottom of the sealed cavity 501, and in this embodiment, the opening is in an open state, allowing the sealed cavity 501 to communicate with the outside. A vertically arranged placement plate 6 is provided inside the sealed cavity 501, and a fixed block 2 is fixedly mounted on the placement plate 6. Simultaneously, a movable block 3 is movably arranged inside the sealed cavity 501, opposite to the fixed block 2, and the movable block 3 is horizontally arranged with the fixed block 2. A first driving member 9 is fixedly mounted on the cylinder 5, which can drive the movable block 3 towards the fixed block 2. A material bag 1 (which can be a conventionally used ton bag, etc.) is fixedly mounted on the adjacent sides of 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 constitute a sealing assembly. The sealing assembly is set in two sets and 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 and conveying device, characterized in that, The device includes a sealing assembly located inside a cylinder (5) and a bag (1) with upper and lower openings. The sealing assembly includes a fixed block (2) and a movable block (3) located inside the cylinder (5). 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. When the movable block (3) moves toward the fixed block (2) until it touches the fixed block (2), one opening of the bag (1) is sealed. The sealing assembly is set in two sets and arranged in an up-down state so that both the upper and lower openings of the bag (1) can be sealed. The conveying device also includes a pressure plate (4) located inside the cylinder (5). The pressure plate (4) is located between the two sealing assemblies and can move toward or away from the bag (1).

2. The silicon powder compaction and conveying equipment according to claim 1, 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, 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 material bag (1) is sealed by the adapted engagement of the protrusion (301) and the recess (201).

3. A silicon powder compaction and conveying device according to claim 1 or 2, 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.

4. The silicon powder compaction and conveying equipment according to claim 3, characterized in that, The cylinder (5) is fixedly provided with a placement plate (6) for installing the fixed block (2). The pressure plate (4) is set in three sets, and the three sets of pressure plates (4) and placement plates (6) are arranged in a rectangular layout around the material bag (1).

5. A silicon powder compaction and conveying device according to claim 1 or 2, characterized in that, The top of the cylinder (5) is provided with a feed pipe (7) with one end inside it, and the feed pipe (7) is connected to the top opening of the bag (1) through a converter expansion cylinder (8).

6. A silicon powder compaction and conveying device according to claim 1 or 2, characterized in that, The cylinder (5) is fixedly provided with a first driving member (9) for driving the moving block (3) to move.

7. A silicon powder compaction and conveying device according to claim 6, characterized in that, A second driving member (10) for driving the pressure plate (4) to move is fixedly provided on the cylinder (5).

8. A silicon powder compaction and conveying device according to claim 1 or 2, characterized in that, The conveying device also includes a funnel (11) located at the bottom opening of the cylinder (5) and a conveying assembly (12) for receiving silicon cakes. 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).

9. A silicon powder compaction and conveying device according to claim 7, characterized in that, Both the first driving member (9) and the second driving member (10) are configured as cylinders.

10. A silicon powder compaction and conveying device according to claim 1 or 2, characterized in that, The conveying equipment also includes a frame (13) for mounting the cylinder (5).

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