Novel dust removal and purification device of solid particle negative ion machine

Abstract

The utility model discloses a novel dust removal and purification device of a solid particle negative ion machine. The novel dust removal and purification device comprises a dust removal main body, an equipment inlet, a hopper, a negative ion machine, a nitrogen port and a discharge port, wherein the equipment inlet is arranged at the upper part of the dust removal main body, the hopper is arranged at the lower part of the dust removal main body, the hopper is provided with the discharge port, the negative ion machine is connected with the nitrogen port, and the nitrogen port is arranged at the lower part of the hopper; a dust collection tank is communicated with the dust removal main body through a connecting pipe, a discharge port and a fan are arranged at the upper part of the dust collection tank, and a slag discharge port is formed in the lower end of the dust collection tank. Therefore, the technical problems that the particle silicon size is not uniform, and the turbidity value uniformity is insufficient after electrostatic adsorption particle silicon products are subjected to dust removal can be solved.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to a novel solid particle negative ion generator dust removal and purification device. Background Technology

[0002] Polycrystalline silicon is produced by the silane fluidized bed method. Compared with rod-shaped silicon, granular silicon has the advantages of larger specific surface area and higher packing volume. Currently, granular silicon is mainly prepared by the fluidized bed method. In the process of preparing granular silicon by thermal decomposition of silane in the fluidized bed, due to the uneven pyrolysis of silane, ultrafine dust will adhere to the surface of granular silicon during the reaction, forming surface dust, which affects the quality of granular silicon products. Usually, it is necessary to perform de-dust treatment on granular silicon products.

[0003] In the process of developing this utility model, it was discovered that the existing silane fluidized bed particle dust removal method uses a sieving dust removal device where particles flow from top to bottom for classification. The single-layer sieving process results in a short particle residence time, making it impossible to completely remove dust from the particle surface. Furthermore, while the silane fluidized bed particle dust removal method can use a circulating water washing and filtration device, the ultrapure water cannot be reused after washing, compromising cleanliness. The drying process is also power-intensive, resulting in low overall production capacity. Additionally, the silane fluidized bed particle dust removal method can use a closed-loop grinding device for particle dust removal, but the filling capacity is limited, resulting in intermittent operation. Clogged filtration systems can affect dust removal efficiency and, in severe cases, lead to system shutdown. Utility Model Content

[0004] In view of this, the present invention provides a novel solid particle negative ion generator dust removal and purification device, which can solve technical problems such as uneven particle size and insufficient uniformity of turbidity value after dust removal due to electrostatic adsorption of particle silicon products.

[0005] To achieve the above objectives, a novel solid particle negative ion generator dust removal and purification device is provided according to an embodiment of the present invention, comprising: a dust removal body and an equipment inlet, a negative ion generator, a nitrogen port, and a discharge port disposed on the dust removal body; wherein, the equipment inlet is disposed on the upper part of the dust removal body, the hopper is disposed on the lower part of the dust removal body, and the hopper is provided with the discharge port, the negative ion generator is connected to the nitrogen port, and the nitrogen port is disposed on the lower part of the hopper;

[0006] A dust collection tank is connected to the dust removal body via a connecting pipe, and a discharge port and a fan are provided at the upper part of the dust collection tank, while a slag discharge port is provided at the lower end of the dust collection tank.

[0007] Optionally, the nitrogen inlet is connected to the negative ion generator via a pneumatic quick connector and a PU hose.

[0008] Optionally, a flanged short pipe is installed at the discharge port.

[0009] Optionally, it includes: a filter plate;

[0010] The filter plate is disposed in the upper part of the dust removal body;

[0011] The device inlet is located on the filter plate and is positioned at the top of the dust removal body;

[0012] One end of the connecting pipe is connected to the side wall of the dust removal body on the filter plate.

[0013] Optionally, it includes: a rotary motor and a rotary disk and a rotary shaft located inside the dust removal body; the rotary disk is fixed on the rotary shaft, and the rotary shaft is connected to the rotary motor.

[0014] Optionally, it includes: an outer retaining ring and a support shaft; the support shaft is fixed on the inner wall of the dust removal body, the outer retaining ring is fixed on the support shaft, and the outer retaining ring covers the outer side of the rotating disk.

[0015] Optionally, it includes:

[0016] An escape prevention device is installed at the top of the dust collection tank;

[0017] The fan is installed at the top of the escape prevention device;

[0018] The discharge port is located on the side wall of the escape prevention device.

[0019] Optionally, the escape prevention device includes a dust collection chamber cylinder and a partition, wherein the dust collection chamber cylinder is provided with a honeycomb-shaped partition.

[0020] Optionally, it includes: a dust collection can cone;

[0021] A dust collection tank cone is connected to the lower end of the dust collection tank, and a slag discharge port is provided at the lower end of the dust collection tank cone.

[0022] Optionally, it includes: a support;

[0023] The bracket is connected to the lower end of the dust removal body and is used to support the dust removal body;

[0024] The bracket is connected to the lower end of the dust collection tank and is used to support the dust collection tank.

[0025] One embodiment of the above-mentioned utility model has the following advantages or beneficial effects: The present utility model provides a novel solid particle negative ion generator dust removal and purification device with high efficiency dust removal, which enables inert gas to be blown away and remove static electricity from the particle surface under the action of the negative ion generator, thereby improving the dust removal effect. Furthermore, by controlling the built-in rotating disk and negative ion generator, the device can be automated and management strategies can be improved.

[0026] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0027] The accompanying drawings are provided to better understand this utility model and do not constitute an undue limitation thereof. Wherein:

[0028] Figure 1 This is a schematic diagram of the structure of a novel solid particle negative ion generator dust removal and purification device according to an embodiment of the present utility model. Detailed Implementation

[0029] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These embodiments should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0030] At least one embodiment of this utility model provides a novel solid particle negative ion generator dust removal and purification device, such as... Figure 1 As shown, the novel solid particle negative ion dust removal and purification device may include a dust removal body 18, an equipment inlet 1, a hopper 7, a negative ion generator, a nitrogen port 10, a discharge port 9, a connecting pipe 17, a dust collection tank 13, a discharge port 14, a fan 16, and a slag discharge port 11. In an embodiment, the dust removal body 18 includes the equipment inlet 1, hopper 7, negative ion generator, nitrogen port 10, and discharge port 9, all mounted on the dust removal body 18. The equipment inlet 1 is located at the upper part of the dust removal body 18, and the hopper 7 is located at the lower part of the dust removal body 18, with the discharge port 9 provided on the hopper 7. The negative ion generator is connected to the nitrogen port 10, which is located at the lower part of the hopper 7. Thus, nitrogen gas is blown into the dust removal body 18 through the negative ion generator, the nitrogen port 10, and the hopper 7, resulting in sufficient gas-solid contact and cross-flow with the falling particles. A dust collection tank 13 is connected to the dust removal body 18 via a connecting pipe 17, and a discharge port 14 and a fan 16 are provided on the upper part of the dust collection tank 13, and a slag discharge port 11 is provided at the lower end of the dust collection tank 13.

[0031] Example: Upstream particles continuously enter the dust removal body 18 from the equipment inlet 1. Nitrogen from the nitrogen port 10 serves as the carrier gas. The negative ion generator introduces charged ion wind into the dust removal body 18 to purge and remove static electricity from the particle surface. The particles are discharged from the equipment outlet 9 to the downstream pipeline. Under the purging of nitrogen and the adsorption of the fan 16, the dust-laden gas is discharged from the dust removal body 18 through the connecting pipe 17 into the dust collection tank 13. The dusty exhaust gas is discharged from the discharge port 14 into the process system pipeline. The dust is periodically cleaned and released from the slag discharge port 11. Thus, the new type of solid particle negative ion dust removal and purification device can work automatically and continuously, improving the processing efficiency.

[0032] As can be seen, this invention, by adding a negative ion generator, can generate a large number of positive and negative charges, which, under the action of airflow, neutralize the charges on the solid surface, thus removing static electricity and achieving dust removal. Simultaneously, using nitrogen as a carrier gas protects product quality in an inert environment and can suppress dust explosions.

[0033] In some embodiments worth noting, the nitrogen port 10 is designed as an open loop, that is, nitrogen is collected and discharged. Of course, it can also be designed as a closed loop dust removal process, that is, nitrogen is collected and circulated into the nitrogen port 10.

[0034] Preferably, the negative ion generator includes 1-6 negative ion nozzles located in different positions, and the nitrogen port 10 is connected to the negative ion generator via a pneumatic quick connector and a PU hose.

[0035] In another embodiment, a flanged short pipe is installed at the discharge port 9. It should be noted that the inlet 1 and the outlet 9 of the dust collector body 18 are cylindrical, with a size ranging from 50mm to 100mm, but are not limited to regular cylinders.

[0036] As some other embodiments of this utility model, the novel solid particle negative ion generator dust removal and purification device further includes a filter plate 2. The filter plate 2 is disposed in the upper part of the dust removal body 18, and the device inlet 1 is located above the filter plate 2 and is disposed at the top of the dust removal body 18. One end of the connecting pipe 17 is connected to the side wall of the dust removal body 18 above the filter plate 2.

[0037] Example: Under the adsorption of the fan 16, dust is discharged from the filter plate 2 of the dust collector body 18 into the dust collection tank 13 through the connecting pipe 17.

[0038] In further embodiments of this utility model, the novel solid particle negative ion generator dust removal and purification device also includes a rotary motor 8, a rotary disk 4, and a rotary shaft 6. The rotary disk 4 and the rotary shaft 6 are located inside the dust removal body 18. The rotary disk 4 is fixed on the rotary shaft 6, and the rotary shaft 6 is connected to the rotary motor 8. For example, the rotary disk 4 rotates under the drive of the rotary motor 8. Particles flow from the equipment inlet 1 through the rotary disk 4 and fall to the outlet 9. Dust is discharged into the dust collection tank 13 through the connecting pipe 17. In a preferred embodiment, the rotary disk 4 can be located at a suitable position in the dust removal body 18 for effective dust removal.

[0039] In a further embodiment, the novel solid particle negative ion generator dust removal and purification device also includes an outer baffle ring 5 and a support shaft 3. The support shaft 3 is fixed to the inner wall of the dust removal body 18, and the outer baffle ring 5 is fixed on the support shaft 3, covering the outer side of the rotating disk 4. For example, the rotating disk 4 is fixed on a rotating shaft 6 and driven by a rotating motor 8. Preferably, the gap between the rotating disk 4 and the outer baffle ring 5 is in the range of 5mm-10mm.

[0040] Furthermore, the dust collector body 18 contains 2-8 layers of rotating disks 4 and rotating shafts 6, outer baffles 5 and support shafts 3, thereby introducing charged ionized air into each cavity of the dust collector body 18 via a negative ion generator. Preferably, a dust discharge hole is provided between each layer of outer baffles 5. The dust discharge hole can be located at a suitable position in the dust collector body 18 for effective dust removal.

[0041] Therefore, this utility model, through the built-in rotating disk 4, rotating shaft 6, outer baffle ring 5, and support shaft 3 of the dust removal body 18, enables movement under the action of the rotating motor 8, increasing the mutual friction and collision between particles and improving the dust removal effect. Meanwhile, the rotating disk 4 is covered with baffles that are evenly arranged, and the outer baffle ring 5 effectively prevents particles from escaping. Preferably, the baffles can be vertical or rectangular.

[0042] In another embodiment, it should be noted that the start and stop of the negative ion generator can be triggered by the equipment PLC controller, the start and stop of the rotary motor 8 can also be triggered by the equipment PLC controller, and the frequency converter can be used to adjust the rotation speed of the rotating disk, as well as the start and stop of the fan 16 can be triggered by the equipment PLC controller, and the frequency converter can be used to adjust the suction power.

[0043] In some embodiments of this utility model, the novel solid particle negative ion generator dust removal and purification device may include an escape prevention device 15. The escape prevention device 15 is disposed at the top of the dust collection tank 13, the fan 16 is installed at the top of the escape prevention device 15, and the discharge port 14 is disposed on the side wall of the escape prevention device 15. For example, waste is discharged from the slag discharge port 11, and waste gas is discharged to the process system from the discharge port 14 via the escape prevention device 15. Thus, this utility model, by incorporating a particle escape prevention device, avoids particle loss and more effectively removes dust.

[0044] In a further embodiment, the escape prevention device 15 includes a dust removal chamber cylinder and a partition, wherein the dust removal chamber cylinder is provided with a honeycomb-shaped partition.

[0045] In a further embodiment, the escape prevention device 15 can utilize a gas seal or a mechanical seal. For example, the escape prevention device 15 utilizes a dynamic or static ring, a sealing end face, and a compensation mechanism to form a gas seal or a mechanical seal, wherein the gas seal is formed when the external pressure is greater than the working pressure, and the mechanical seal is formed when the elastic element of the sealing elasticity is such that the compensation ring is attached to the end face of the non-compensation ring.

[0046] As some embodiments of this utility model, it further includes a dust collection tank cone 12, which is connected to the lower end of the dust collection tank 13. A slag discharge port 11 is provided at the lower end of the dust collection tank cone 12. For example, dust falls back into the dust collection tank cone 12 and is discharged from the slag discharge port 11.

[0047] As some preferred embodiments of the present invention, the present invention also includes a bracket 19, which is connected to the lower end of the dust removal body 18 for supporting the dust removal body 18, and the bracket 19 is connected to the lower end of the dust collection tank 13 for supporting the dust collection tank 13.

[0048] It is worth noting that the novel solid particle negative ion dust removal and purification device of this utility model can also have a lining clean material on the inner wall of the dust removal body 18, which can isolate metal contamination and ensure quality stability. Further embodiment: The lining clean material on the inner wall of the dust removal body 18 can be quartz, silicon, low-nickel alloy, nickel alloy, cobalt alloy, silicon nitride, graphite, silicon carbide, ceramic, polyurethane, etc. Of course, the lining clean material can be replaced to more effectively solve the contamination problem.

[0049] In addition, the volume of the dust collection tank 13 is smaller than that of the dust removal body 18, and the inner wall of the dust collection tank 13 has a coating. Preferably, the coating may include silicon, silicon carbide, silicon nitride, nickel-based alloy, ceramic, or perfluoroalkoxy resin.

[0050] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel solid particle negative ion generator for dust removal and purification, characterized in that, include: The dust collector includes a main body and an equipment inlet, a hopper, a negative ion generator, a nitrogen inlet, and a discharge outlet, all mounted on the main body. The equipment inlet is located at the top of the main body, the hopper is located at the bottom of the main body and has the discharge outlet, the negative ion generator is connected to the nitrogen inlet, and the nitrogen inlet is located at the bottom of the hopper. A dust collection tank is connected to the dust removal body via a connecting pipe, and a discharge port and a fan are provided at the upper part of the dust collection tank, while a slag discharge port is provided at the lower end of the dust collection tank.

2. The novel solid particle negative ion generator dust removal and purification device according to claim 1, characterized in that, include: The nitrogen inlet is connected to the negative ion generator via a pneumatic quick connector and a PU hose.

3. The novel solid particle negative ion generator dust removal and purification device according to claim 1, characterized in that, include: A flanged short pipe is installed at the discharge port.

4. The novel solid particle negative ion generator dust removal and purification device according to claim 1, characterized in that, include: Filter plate; The filter plate is disposed in the upper part of the dust removal body; The device inlet is located on the filter plate and is positioned at the top of the dust removal body; One end of the connecting pipe is connected to the side wall of the dust removal body on the filter plate.

5. The novel solid particle negative ion generator dust removal and purification device according to claim 1, characterized in that, include: A rotary motor and a rotating disk and rotating shaft located inside the dust removal body; The rotating disk is fixed on the rotating shaft, and the rotating shaft is connected to the rotating motor.

6. The novel solid particle negative ion generator dust removal and purification device according to claim 5, characterized in that, include: Outer retaining ring and support shaft; The support shaft is fixed on the inner wall of the dust removal body, the outer retaining ring is fixed on the support shaft, and the outer retaining ring covers the outer side of the rotating disk.

7. The novel solid particle negative ion generator dust removal and purification device according to claim 1, characterized in that, include: An escape prevention device is installed at the top of the dust collection tank; The fan is installed at the top of the escape prevention device; The discharge port is located on the side wall of the escape prevention device.

8. The novel solid particle negative ion generator dust removal and purification device according to claim 7, characterized in that, include: The escape prevention device includes a dust removal chamber cylinder and a partition, wherein the dust removal chamber cylinder is provided with a honeycomb-shaped partition.

9. The novel solid particle negative ion generator dust removal and purification device according to claim 1, characterized in that, include: Dust collection tank cone shape; A dust collection tank cone is connected to the lower end of the dust collection tank, and a slag discharge port is provided at the lower end of the dust collection tank cone.

10. The novel solid particle negative ion generator dust removal and purification device according to any one of claims 1-9, characterized in that, include: support; The bracket is connected to the lower end of the dust removal body and is used to support the dust removal body; The bracket is connected to the lower end of the dust collection tank and is used to support the dust collection tank.

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