Granular silicon screening device

Abstract

The utility model provides a particle silicon screening device which comprises a hollow barrel body (1), a discharging opening (3) is formed in the bottom of the barrel body (1), and a feeding opening is formed in the top of the barrel body (1). A pair of sieve plate supporting parts (4) is obliquely arranged in the barrel body (1), and a sieve plate (5) used for sieving silicon particles is obliquely clamped in the barrel body (1); the top of the sieve plate (5) is in rigid contact with a reinforcing plate (6) mounted in the barrel body (1), and the reinforcing plate (6) extends to the outside of the barrel body (1) and is provided with a vibrator (7). The inclined screen surface designed by the utility model can reduce the blocking probability of the product screen; by means of the vibrator, when the product screen is blocked, blockage is effectively removed under the condition that the product screen is not disassembled and inspected, and the disassembly and inspection rate of the product screen is reduced.

Description

Technical Field

[0001] This utility model relates to a screening device, and more particularly to a particle silicon screening device. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] In the process of producing granular polycrystalline silicon using the silane fluidized bed method, irregular silicon materials (such as blocky silicon) may be generated due to reasons such as instability of the production system, which require screening.

[0004] During the screening process, irregular silicon material (such as lumpy material) can easily clog the product screen. The product screen must be cleaned in time, which seriously affects production efficiency and product quality, and also wastes manpower.

[0005] Furthermore, when screening granular silicon (including lumpy silicon) in ton bags, a bucket-shaped hopper with a flat screen is currently used. During the screening process, lumpy material can easily clog existing product screens.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] Purpose of the invention: The technical problem to be solved by this utility model is to provide a particle silicon sieve to address the shortcomings of the existing technology.

[0008] To solve the above-mentioned technical problems, this utility model discloses a particulate silicon sieve, comprising:

[0009] The barrel has a hollow body, with a discharge port at the bottom and a feed port at the top; a pair of sieve plate supports are obliquely arranged inside the barrel, and the sieve plates for screening granular silicon are obliquely clamped inside the barrel; the top of the sieve plate is in rigid contact with a reinforcing plate installed inside the barrel, and the reinforcing plate extends to the outside of the barrel and is equipped with a vibrator.

[0010] Furthermore, a support plate is fixed to the outer wall of the barrel for mounting support legs, and the support legs are installed below the support plate to fix the barrel.

[0011] Furthermore, a material clearing gate is provided on the side wall of the barrel at the bottom of the screen plate to remove the blockage material accumulated between the screen plate and the side wall of the barrel.

[0012] Furthermore, a reinforcing brace is provided on the middle of the outer side of the barrel for connecting and fixing to external equipment.

[0013] Furthermore, the top of the barrel is provided with a top cover, and the top of the top cover is provided with a flange that connects to an external pipe for inputting silicon particles to be screened.

[0014] Furthermore, the top of the barrel is provided with a ton bag rack for placing ton bags.

[0015] Furthermore, the tonne rack includes:

[0016] The main support consists of longitudinal ton bag rack legs and transverse ton bag rack beams. The top of the main support is provided with a ton bag rack reinforcing brace, which is connected to the ton bag rack material support platform.

[0017] Furthermore, the ton bag rack support platform has a recessed structure with an opening in the middle.

[0018] Furthermore, the inner wall of the barrel is coated.

[0019] Furthermore, the coating is a PFA coating, polyurethane, or a single-crystal plate.

[0020] Beneficial effects:

[0021] 1. The inclined screen surface designed in this utility model can reduce the chance of product screen clogging.

[0022] 2. This utility model utilizes a vibrator to effectively clear blockages in product screens without disassembling and inspecting them, thereby reducing the disassembly and inspection rate of product screens.

[0023] 3. This utility model is equipped with a material clearing gate, which ensures rapid disassembly and inspection and improves work efficiency.

[0024] 4. This utility model adds a reinforcing plate to ensure the service life of the flange surface at the connection of the vibrating screen.

[0025] 5. This utility model internally sprays clean and wear-resistant PFA material or pours polyurethane and attaches monocrystalline plates to ensure that the granular silicon products are not contaminated.

[0026] 6. This utility model is applicable to screening ton-packaged granular silicon. Attached Figure Description

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0029] Figure 2 This is a side view of the overall structure of this utility model.

[0030] Figure 3This is a top view of the present invention.

[0031] Figure 4 This is a schematic diagram of the main structure of this utility model.

[0032] Figure 5 This is a schematic diagram of the overall structure in one embodiment.

[0033] Figure 6 This is a schematic diagram of a ton bag rack structure in one embodiment.

[0034] In the diagram, 1 is the barrel body, 2 is the top cover, 3 is the discharge port, 4 is the screen plate support, 5 is the screen plate, 6 is the reinforcing plate, 7 is the vibrator, 8 is the coating, 9 is the support leg plate, 10 is the reinforcing support, 11 is the unblocking material gate, and 12 is the support leg.

[0035] 13 is the ton bag rack, 1301 is the ton bag rack support leg, 1302 is the ton bag rack crossbeam, 1303 is the ton bag rack reinforcing support, and 1304 is the ton bag rack material support platform. Detailed Implementation

[0036] The overall concept of this utility model is as follows:

[0037] 1. Design the product screen plate as an inclined screen, and place the inclined screen at an angle in the product screen cavity, with the bottom surface facing the unblocking material gate;

[0038] 2. Add a vibrator to the outside of the product screen. When the product screen is blocked, start the vibrator to shake off the blocky material on the product screen and ensure the continued operation of the product screen. This can significantly reduce the disassembly rate of the product screen (by up to 90%).

[0039] 3. The product screen is equipped with a clearing gate. When the screening speed of the product screen is low and the vibrator is ineffective, it means that there is a large amount of block material in the product screen and the feeding speed required for production can no longer be met. The product screen should be disassembled and inspected. At this time, the bottom feeding valve of the product tank is closed. After the vibrator shakes the remaining material in the product screen until no more material is fed, the clearing gate facing the bottom of the product screen plate is opened to clean the block material in the product screen. The clearing gate is then closed and the material can be fed again for production.

[0040] 4. The upper part of the product screen is designed with an open structure, with an external ton bag rack for screening ton-packaged granular silicon, and the bottom is designed with a flange structure for pipe installation;

[0041] 5. A reinforcing plate is added to the outside of the product screen body to ensure the service life of the flange surface at the connection of the vibrating screen;

[0042] 6. The inside of the product sieve and the ton bag frame are sprayed with clean, wear-resistant PFA material or polyurethane is poured and single crystal plates are pasted on to ensure that the granular silicon products are not contaminated.

[0043] 7. A clean isolation seam is designed between the ton bag rack and the product screen to ensure that dust does not enter the product screen.

[0044] The technical solution of this utility model is as follows:

[0045] like Figure 1 As shown, a granular silicon sieve includes: a hollow barrel 1, with a discharge port 3 at the bottom for discharging sieved granular silicon. The top of the barrel 1 is open for receiving granular silicon to be sieved.

[0046] On the inner wall of the barrel 1, a pair of sieve plate support parts 4 are provided at an angle to secure the sieve plate 5 at an angle inside the barrel.

[0047] Inside the barrel 1, at the top of the sieve plate 5, there is a reinforcing plate 6. The reinforcing plate 6 extends out of the barrel 1, and a vibrator 7 is installed on the reinforcing plate 6. When the vibrator 7 is working, it transmits vibration to the sieve plate 5 through the reinforcing plate 6 to clear the clogging of the sieve holes on the sieve plate 5.

[0048] The inner wall of the barrel 1 is coated with a coating 8, which is sprayed with clean and wear-resistant PFA material or poured with polyurethane and bonded with monocrystalline plates to ensure that the granular silicon products are not contaminated.

[0049] A support plate 9 is fixed on the outer wall of the barrel 1 for mounting the support legs 12.

[0050] like Figure 4 As shown, the support leg 12 is installed below the support leg plate 9 to fix the entire particle silicon sieve.

[0051] like Figure 2 As shown, a material clearing gate 11 is provided on the side wall of the barrel 1. The gate is located at the bottom of the screen plate 5 at an angle downwards, which facilitates the removal of the blockage material accumulated between the screen plate 5 and the side wall of the barrel 1.

[0052] A reinforcing brace 10 is provided on the middle of the outer side of the barrel body 1 for connecting and fixing to external equipment.

[0053] In one embodiment, such as Figure 3 As shown, the top of the barrel 1 is provided with a top cover 2, and the top of the top cover 2 is provided with a flange for connecting to an external pipe, so as to receive the granular silicon to be screened.

[0054] In another embodiment, such as Figure 5 As shown, the top of the barrel 1 is equipped with a ton bag rack 13, which facilitates the screening of granular silicon in the ton bag.

[0055] like Figure 6As shown, the ton bag rack 13 includes a main support frame consisting of longitudinal ton bag rack legs 1301 and transverse ton bag rack beams 1302. A ton bag rack reinforcing brace 1303 is provided at the top of the main support frame for connecting the ton bag rack support platform 1304. The ton bag rack support platform 1304 is a concave frustum structure with an opening in the center for holding ton bags.

[0056] like Figure 5 As shown, during use, the ton bag rack 13 is placed on the outside of the barrel 1, and the reinforcing support 10 and the ton bag rack crossbeam 1302 are fixed. The ton bag is placed on the ton bag rack support platform 1304, with the bottom of the ton bag open, and the granular silicon to be screened falls into the barrel 1.

[0057] This utility model provides a concept and method for a particulate silicon sieve. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A granular silicon sifter, characterized by, It includes: The hollow barrel body (1), the bottom of the barrel body (1) is provided with a discharge port (3), and the top is provided with a feeding port; a pair of screen plate supporting parts (4) are arranged obliquely in the barrel body (1), and the screen plate (5) for screening granular silicon is obliquely clamped in the barrel body (1); the top of the screen plate (5) is in rigid contact with the reinforcing plate (6) installed inside the barrel body (1), the reinforcing plate (6) extends to the outside of the barrel body (1), and the vibrator (7) is installed.

2. A particulate silicon sifter according to claim 1, wherein, The outer side wall of the barrel body (1) is fixedly provided with a leg plate (9) for installing a leg (12), and the leg (12) is installed below the leg plate (9) for fixing the barrel body (1).

3. A particulate silicon sifter according to claim 2, wherein, The side wall of the barrel body (1) is provided with a clogging removal door (11) at the bottom position of the screen plate (5) for removing the clogging material accumulated between the screen plate (5) and the side wall of the barrel body (1).

4. A particulate silicon sifter according to claim 2, wherein, The outer side of the barrel body (1) is provided with a reinforcing support (10) in the middle for connecting and fixing with external equipment.

5. A particulate silicon sifter according to claim 2, wherein, The top of the barrel body (1) is provided with a top cover (2), and the top of the top cover (2) is provided with a flange connected with a pipeline for inputting the granular silicon to be screened.

6. A particulate silicon sifter according to claim 2, wherein, The top of the barrel body (1) is provided with a ton bag rack (13) for placing a ton bag.

7. A particulate silicon sifter according to claim 6, wherein, The ton bag rack (13) includes: The main support is composed of a longitudinal ton bag rack leg (1301) and a transverse ton bag rack beam (1302), and the top of the main support is provided with a ton bag rack reinforcing support (1303) connected with a ton bag rack material supporting table (1304).

8. A particulate silicon sifter according to claim 7, wherein, The ton bag rack material supporting table (1304) is a concave structure with a hole in the middle.

9. A particulate silicon sifter according to claim 1, wherein, The inner wall of the barrel body (1) is provided with a coating (8).

10. A particulate silicon sifter according to claim 9, wherein, The coating (8) is a PFA coating, polyurethane or single crystal plate.

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