Silica powder filter for polycrystalline silicon production

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a silicon powder filter for polycrystalline silicon production, which comprises a pattern plate and a filter element, a connecting ring is fixedly connected to the top of the pattern plate, a quick disassembly and assembly component is arranged between the connecting ring and the filter element, and a damage plugging component is arranged on the filter element. Grooves are formed in the inner walls of the two sides of the connecting ring, and two inserting grooves are formed in the top of the connecting ring. The filter element sealing device is reasonable in structural design, a small amount of damaged filter elements can be conveniently sealed through the arrangement of the rotating ring, the sealing plate, the plugging head and the supporting ring, so that the normal filtering use of the filter is not hindered, and when the damaged filter elements are too many, the sealing effect is good. Through arrangement of screws, locking grooves, cross rods, reset springs, moving plates, fixing plates, fixing grooves, inserting grooves, inserting grooves, mounting rings and connecting rings, the damaged filter element can be quickly and efficiently disassembled, assembled and replaced, and the disassembling, assembling and replacing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a silicon powder filter for polysilicon production. Background Technique

[0002] In the actual production process of polysilicon, the cold hydrogenation fluidized bed will entrain a part of silicon powder into the subsequent system, causing problems of "blockage" and "wear" of process equipment and pipelines. Usually, after the fluidized bed reactor, a cyclone separator is set to intercept solids with a diameter of more than 5um, which can slow down the problems of "blockage" and "wear". However, for solid particles with a size of less than 5um, there is still a problem that they cannot be completely intercepted. On the polysilicon production line, a filter sintered with metal is often installed to effectively intercept solid particles with small sizes and solve the problems of "blockage" and "wear" of the process system. Currently, for the filter sintered with metal, its filter element is installed on the flower plate through threaded connection (the flower plate is on the top and the filter element is on the bottom), and the flower plate is used to assemble the filter element. After retrieval: A silicon powder filter for polysilicon production with the authorization publication number of CN213995154U belongs to the technical field of polysilicon production, including a flower plate and a filter element. A plurality of connection holes are opened on the flower plate. The filter element is a filter element with an open top and filter holes on the side wall. Internal threads are provided on the inner wall of the connection hole, and external threads are provided on the outer side of the upper part of the filter element. The filter element is connected to the connection hole through threads, and the top of the installed filter element extends out of the upper plane of the connection hole.

[0003] However, the above-mentioned silicon powder filter for polysilicon production still has deficiencies. Using the threaded connection between the nut and the filter element connector to connect and disassemble the filter element, it is necessary for personnel to rotate the filter element many times to disassemble and assemble the filter element by sleeving the filter element thread in the nut, resulting in more troublesome disassembly and assembly and lower efficiency. Therefore, we propose a silicon powder filter for polysilicon production to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages and propose a silicon powder filter for polysilicon production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A silicon powder filter for polysilicon production, including a flower plate and a filter element. A connection ring is fixedly connected to the top of the flower plate. A quick disassembly and assembly component is arranged between the connection ring and the filter element, and a damage blocking and sealing component is arranged on the filter element.

[0007] Preferably, grooves are formed on the inner walls of both sides of the connecting ring, and two slots are formed at the top of the connecting ring. The quick disassembly and assembly component includes a mounting ring fixedly connected to the outside of the filter element and a return spring fixedly connected to the inner wall of one side of the groove. The inner end of the return spring is fixedly connected with a moving plate, and a fixing plate is fixedly connected to the inner side of the moving plate. Two inserting plates are fixedly connected to the bottom of the mounting ring, and the two inserting plates are respectively movably inserted into the corresponding slots. Fixing grooves are formed on the mutually remote sides of the two inserting plates, and the two fixing plates are respectively movably clamped in the corresponding fixing grooves. A cross bar is fixedly connected to the outside of the moving plate.

[0008] Preferably, one end of the cross bar extends to the outside of the connecting ring and is fixedly connected with a pulling plate.

[0009] Preferably, ear plates are fixedly connected to both sides of the connecting ring, screws are threadedly connected to the tops of the ear plates, two locking grooves are formed at the top of the cross bar, and the screws are movably clamped in the corresponding locking grooves.

[0010] Preferably, the two moving plates are respectively sleeved in the corresponding grooves in a sliding manner, and the filter element is sleeved in the connecting ring in a sliding manner.

[0011] Preferably, the damage blocking component includes a plurality of support rings fixedly connected to the inside of the filter element. A blocking head is threadedly sleeved in the upper support ring, and a sealing plate is fixedly connected to the top end of the blocking head.

[0012] Preferably, internal threads are formed in the upper support ring, and the blocking head is threadedly sleeved in the internal threads.

[0013] Preferably, a rotating ring is fixedly connected to the top of the sealing plate.

[0014] In the utility model, for the silicon powder filter used in polysilicon production, when the number of damaged filter elements is small and does not prevent normal filtering of silicon powder, by rotating the rotating ring, rotating the sealing plate and the blocking head, the blocking head can be threadedly sleeved in the damaged filter element, and the sealing plate can be made to shield and seal the filter element, so that the filter can normally perform the filtering operation on silicon powder;

[0015] In the present utility model, for the silicon powder filter used in polysilicon production, when there are many damaged filter elements and the silicon powder cannot be filtered normally, the damaged filter elements need to be replaced uniformly. Loosen the screw so that the screw disengages from the outer locking groove and does not fix the cross bar. Then pull the two cross bars, the moving plate and the fixing plate, so that the two fixing plates disengage from the fixing grooves and do not fix the plug board. At this time, the screw is aligned with the locking groove of the internal teeth, and then tighten the screw so that the screw is clamped in the inner locking groove, thereby locking the fixing plate, so that the operator can free his hands to pull out the mounting ring and the filter element from the connecting ring. Then put the new mounting ring, filter element and plug board into the connecting ring, and make the plug board inserted into the slot. Then tighten the screw. At this time, under the elastic force of the return spring, the two fixing plates move inward and are respectively clamped in the corresponding fixing grooves, thereby fixing the plug board, mounting ring and filter element. Then tighten the screw again so that the screw is clamped in the outer locking groove, thereby locking the cross bar and the fixing plate, so as to firmly install the filter element.

[0016] The structure of the present utility model is reasonably designed. Through the settings of the rotating ring, sealing plate, plugging head and support ring, it is convenient to seal a small number of damaged filter elements so that they do not affect the normal filtering use of the filter. When there are too many damaged filter elements, through the settings of the screw, locking groove, cross bar, return spring, moving plate, fixing plate, fixing groove, slot, mounting ring and connecting ring, the disassembly and replacement operation of the damaged filter element can be carried out quickly and efficiently, improving the efficiency of disassembly and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a silicon powder filter for polysilicon production proposed by the present utility model;

[0018] Figure 2 is a cross-sectional view of a silicon powder filter for polysilicon production proposed by the present utility model;

[0019] Figure 3 is a schematic structural diagram of part A of a silicon powder filter for polysilicon production proposed by the present utility model;

[0020] Figure 4 is a schematic structural diagram of part B of a silicon powder filter for polysilicon production proposed by the present utility model;

[0021] Figure 5 is a schematic structural diagram of part C of a silicon powder filter for polysilicon production proposed by the present utility model.

[0022] In the figure: 1. Ceiling plate; 2. Filter element; 3. Connecting ring; 4. Mounting ring; 5. Sealing plate; 6. Rotating ring; 7. Support ring; 8. Ear plate; 9. Screw; 10. Cross bar; 11. Pulling plate; 12. Lock groove; 13. Groove; 14. Return spring; 15. Moving plate; 16. Slot; 17. Fixing groove; 18. Fixing plate; 19. Insertion plate; 20. Internal thread; 21. Plugging head. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Refer to Figures 1-5 , a silicon powder filter used in polysilicon production, including a ceiling plate 1 and a filter element 2. A connecting ring 3 is fixedly connected to the top of the ceiling plate 1. A quick disassembly and assembly component is provided between the connecting ring 3 and the filter element 2, and a damage plugging component is provided on the filter element.

[0025] In the present utility model, grooves 13 are formed on the inner walls of both sides of the connecting ring 3, and two slots 16 are formed on the top of the connecting ring 3. The quick disassembly and assembly component includes a mounting ring 4 fixedly connected to the outside of the filter element 2 and a return spring 14 fixedly connected to the inner wall of one side of the groove 13. The inner end of the return spring 14 is fixedly connected to a moving plate 15. An inner side of the moving plate 15 is fixedly connected to a fixing plate 18. Two insertion plates 19 are fixedly connected to the bottom of the mounting ring 4. The two insertion plates 19 are respectively movably inserted into the corresponding slots 16. Fixing grooves 17 are formed on the sides of the two insertion plates 19 away from each other. The two fixing plates 18 are respectively movably clamped in the corresponding fixing grooves 17. A cross bar 10 is fixedly connected to the outside of the moving plate 15. When there are many damaged filter elements 2 and the silicon powder cannot be filtered normally, it is necessary to uniformly replace the damaged filter elements 2. Pull the two cross bars 10, the moving plate 15 and the fixing plate 18, so that the two fixing plates 18 are disengaged from the fixing grooves 17 and do not fix the insertion plates 19. Then, put the new mounting ring 4, the filter element 2 and the insertion plates 19 into the connecting ring 3, and make the insertion plates 19 inserted into the slots 16. Then release the cross bar 10. At this time, under the elastic force of the return spring 14, the two fixing plates 18 move inward and are respectively clamped in the corresponding fixing grooves 17, so as to fix the insertion plates 19, the mounting ring 4 and the filter element 2.

[0026] In the present utility model, one end of the cross bar 10 extends to the outside of the connecting ring 3 and is fixedly connected to a pulling plate 11, which is convenient for pulling the cross bar 10.

[0027] In the present utility model, ear plates 8 are fixedly connected to both sides of the connecting ring 3. Screws 9 are threadedly connected to the tops of the ear plates 8. Two locking grooves 12 are formed in the top of the cross bar 10. The screws 9 are movably clamped in the corresponding locking grooves 12. By clamping the screws 9 with the locking grooves 12, it is convenient to fix the fixing plate 18, so as to firmly install the filter element 2. At the same time, it is convenient for the personnel to free their hands to pull out the mounting ring 4 and the filter element 2 from the connecting ring 3.

[0028] In the present utility model, the two moving plates 15 are respectively slidably sleeved in the corresponding grooves 13, and the filter element 2 is slidably sleeved in the connecting ring 3, which is convenient for guiding the moving plates 15 and the filter element 2, making their movement more stable and smooth.

[0029] In the present utility model, the damaged plugging assembly includes a plurality of support rings 7 fixedly connected inside the filter element 2. A plugging head 21 is threadedly sleeved in the upper support ring 7. The top end of the plugging head 21 is fixedly connected with a sealing plate 5. Through the plurality of support rings 7, the filter element 2 can be supported. When the damaged filter element 2 is less and does not prevent the normal filtration of silicon powder, by rotating the ring 6, rotating the sealing plate 5 and the plugging head 21, the plugging head 21 can be threadedly sleeved in the damaged filter element 2, and the sealing plate 5 can be made to shield and seal the filter element 2, so that the filter can normally filter the silicon powder.

[0030] In the present utility model, an internal thread 20 is formed in the upper support ring 7, and the plugging head 21 is threadedly sleeved in the internal thread 20, which is convenient for the plugging head 21 to be threadedly sleeved in the upper support ring 7.

[0031] In the present utility model, a rotating ring 6 is fixedly connected to the top of the sealing plate 5, which is convenient for rotating the sealing plate 5 and the plugging head 21.

[0032] In the present utility model, during operation, when the number of damaged filter elements 2 is small and does not prevent normal filtration of silicon powder, by rotating the rotating ring 6, rotating the sealing plate 5 and the plugging head 21, the plugging head 21 can be threadedly sleeved in the damaged filter element 2, and the sealing plate 5 can be made to shield and seal the filter element 2, so that the filter can normally filter the silicon powder. When the number of damaged filter elements 2 is large and normal filtration of silicon powder cannot be carried out, the damaged filter elements 2 need to be replaced uniformly. Loosen the screw 9 so that the screw 9 disengages from the outer locking groove 12 and does not fix the cross bar 10. Then pull the two cross bars 10, the moving plate 15 and the fixing plate 18 so that the two fixing plates 18 disengage from the fixing groove 17 and do not fix the plug plate 19. At this time, the screw 9 is aligned with the locking groove 12 of the internal teeth, and then tighten the screw 9 so that the screw 9 is clamped in the inner locking groove 12, thereby locking the fixing plate 18, so that the operator can free his hands to pull out the mounting ring 4 and the filter element 2 from the connecting ring 3. Then put the new mounting ring 4, the filter element 2 and the plug plate 19 into the connecting ring 3, and make the plug plate 19 inserted into the slot 16. Then tighten the screw 9. At this time, under the elastic force of the return spring 14, the two fixing plates 18 move inward and are respectively clamped in the corresponding fixing grooves 17, thereby fixing the plug plate 19, the mounting ring 4 and the filter element 2. Then tighten the screw 9 again so that the screw 9 is clamped in the outer locking groove 12, thereby locking the cross bar 10 and the fixing plate 18, so as to firmly install the filter element 2.

[0033] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes, should be covered by the protection scope of the present utility model.

Claims

1. A silicon powder filter for use in polysilicon production, characterized in that: The invention comprises a flower plate (1) and a filter element (2), wherein a connecting ring (3) is fixedly connected to the top of the flower plate (1), a quick disassembly assembly is arranged between the connecting ring (3) and the filter element (2), a damage blocking assembly is arranged on the filter element, grooves (13) are arranged on the inner walls on both sides of the connecting ring (3), two slots (16) are arranged on the top of the connecting ring (3), and the quick disassembly assembly comprises a mounting ring (4) fixedly connected to the outer side of the filter element (2) and a return spring (14) fixedly connected to the inner wall on one side of the groove (13), The inner end of the return spring (14) is fixedly connected to a movable plate (15), the inner side of the movable plate (15) is fixedly connected to a fixed plate (18), the bottom of the mounting ring (4) is fixedly connected to two plug plates (19), the two plug plates (19) are respectively movably inserted into corresponding slots (16), the two plug plates (19) are each provided with a fixed groove (17) on one side away from each other, the two fixed plates (18) are respectively movably clamped in the corresponding fixed grooves (17), and the outer side of the movable plate (15) is fixedly connected to a cross bar (10).

2. A silicon powder filter for use in polysilicon production according to claim 1, characterized in that: One end of the cross bar (10) extends to the outside of the connecting ring (3) and is fixedly connected to a pull plate (11).

3. The silicon powder filter for use in polysilicon production according to claim 1, characterized in that: Ear plates (8) are fixedly connected to both sides of the connecting ring (3), and screws (9) are threadedly connected to the top of the ear plates (8). Two locking grooves (12) are provided on the top of the cross bar (10), and the screws (9) are movably engaged in the corresponding locking grooves (12).

4. The silicon powder filter for use in polysilicon production according to claim 1, characterized in that: The two movable plates (15) are respectively slidably sleeved in the corresponding grooves (13), and the filter element (2) is slidably sleeved in the connecting ring (3).

5. The silicon powder filter for use in polysilicon production according to claim 1, characterized in that: The damage sealing assembly comprises a plurality of support rings (7) fixedly connected to the filter element (2), the upper support ring (7) having an internal thread sleeve provided with a sealing head (21), and the top end of the sealing head (21) is fixedly connected to a sealing plate (5).

6. The silicon powder filter for use in polysilicon production according to claim 5, characterized in that: An internal thread (20) is formed in the upper support ring (7), and the plugging head (21) is threadably sleeved in the internal thread (20).

7. The silicon powder filter for use in polysilicon production according to claim 5, characterized in that: A rotating ring (6) is fixedly connected to the top of the sealing plate (5).

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