Device for removing fine powder in industrial silicon powder

Abstract

The utility model discloses a device for removing fine powder in industrial silicon powder. The device comprises a dust suction pipe, a connecting pipe, a dust suction hood, a platform, a reaction bin, a bracket, a hook and a weighbridge, a vertically-arranged reaction bin is fixed to the platform, a dust suction hood is arranged at the top end of the reaction bin, an outlet of the dust suction hood is connected with an inlet of a connecting pipe, and an outlet of the connecting pipe is connected with an inlet pipeline of a dust suction pipe through a rotating joint; a discharging hopper is arranged at the bottom end of the reaction bin and communicated with the interior of the reaction bin, the bottom end of the discharging hopper is connected with a discharging hose through a discharging valve, a support is arranged at the bottom of the discharging hose, and hooks are fixed to the four corners of the top end of the support and matched with handles of ton bags. A plurality of nozzles are fixed to the side wall of the discharging hopper, the air outlet ends of the nozzles are arranged in the discharging hopper, the air inlet ends of the nozzles are arranged outside the discharging hopper and connected with an air inlet pipeline, and an air valve is arranged on the air inlet pipeline.

Description

Technical Field

[0001] This utility model relates to the field of industrial silicon technology, specifically to a device for removing fine powder from industrial silicon powder. Background Technology

[0002] Industrial silicon refers to silicon and its alloys produced by high-temperature reduction of silica as the main raw material. Silicon materials possess excellent physical, chemical, and electrical properties and are widely used in chemical, electronics, metallurgy, and construction industries. Currently, industrial silicon has become one of the main basic raw materials of the national economy. The particle size of industrial silicon refers to the size of the silicon material, which directly affects the performance and application effect of the silicon material. Because industries such as rubber, coatings, ceramics, and electronics have strict requirements for the particle size of industrial silicon, when customers detect that the proportion of fine powder in silicon powder is high or that it contains dust removal powder, the entire truckload needs to be returned. Products with excessive fine powder can only be returned to the production line for processing. Because the product contains a large number of silicon particles of the correct size, it is impossible to separate the fine powder from the qualified silicon particles. The rework time is 3 bags per hour, the silicon powder loss during rework reaches 1% / ton, and the silicon powder rework time is 0.5 hours / ton, resulting in significant economic losses for the company. Utility Model Content

[0003] The purpose of this invention is to provide a device for removing fine powder from industrial silicon powder.

[0004] This utility model is implemented by the following technical solution: a fine powder removal device for industrial silicon powder, which includes a dust suction pipe, a connecting pipe, a dust suction hood, a platform, a reaction chamber, a support, a hook, and a ground scale;

[0005] The platform is fixed with a vertically arranged reaction chamber, and the top of the reaction chamber is equipped with a dust suction hood. The outlet of the dust suction hood is connected to the inlet of the connecting pipe, and the outlet of the connecting pipe is connected to the inlet line of the dust suction pipe through a rotary joint.

[0006] The bottom of the reaction chamber is provided with a feeding hopper, which is connected to the interior of the reaction chamber. The bottom of the feeding hopper is connected to a discharge hose through a discharge valve. The bottom of the discharge hose is provided with a bracket, and the top four corners of the bracket are fixed with hooks that match the handles of the ton bag.

[0007] The side wall of the hopper is fixed with multiple nozzles. The air outlet of the nozzle is located inside the hopper, and the air inlet of the nozzle is located outside the hopper and connected to the air inlet pipeline. An air valve is provided on the air inlet pipeline.

[0008] Furthermore, a pulley is fixedly provided at the bottom end of the bracket.

[0009] Furthermore, a floor scale is installed on the ground directly below the reaction chamber.

[0010] The advantages of this invention are as follows: With the cooperation of the reaction chamber, air inlet pipeline, and dust collection hood, by introducing air at a certain pressure into the bottom of the reaction chamber, the fine powder enters the dust removal system behind the dust collection pipe with the air and is then recovered and removed. After the fine powder is removed, the bottom discharge valve of the reaction chamber is opened, and qualified silicon powder flows into the ton bag, thus completing the separation of qualified silicon powder and fine powder. The operation is simple and convenient. Compared with the method of returning all silicon powder to the production line, the time spent on removing fine powder from silicon powder using this device is reduced by 80%, while avoiding the loss of silicon powder rework, saving loss costs, and reducing costs and increasing efficiency. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of the utility model;

[0013] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0014] In the diagram: Platform 1, Reaction Chamber 2, Dust Hood 3, Connecting Pipe 4, Rotary Joint 5, Dust Suction Pipe 6, Feed Hopper 7, Discharge Valve 8, Discharge Hose 9, Support 10, Hook 11, Handle 12, Ton Bag 13, Nozzle 14, Air Inlet Pipeline 15, Air Valve 16, Pulley 17, Floor Scale 18. Detailed Implementation

[0015] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1-2 As shown, the device for removing fine powder from silicon powder includes a suction pipe 6, a connecting pipe 4, a suction hood 3, a platform 1, a reaction chamber 2, a support 10, a hook 11, and a floor scale 18.

[0017] A vertically arranged reaction chamber 2 is fixed on platform 1. A dust collection hood 3 is installed at the top of the reaction chamber 2. The outlet of the dust collection hood 3 is connected to the inlet of the connecting pipe 4. The outlet of the connecting pipe 4 is connected to the inlet of the dust collection pipe 6 through a rotary joint 5. The outlet of the dust collection pipe 6 is connected to a dust collector and a fan in sequence. The fan is used to draw the fine powder in the reaction chamber 2 into the dust collector. Then, under the action of the dust collector, the fine powder settles and is returned to the production line for reprocessing.

[0018] The bottom of the reaction chamber 2 is equipped with a feeding hopper 7, which is connected to the interior of the reaction chamber 2. The bottom of the feeding hopper 7 is connected to a discharge hose 9 through a discharge valve 8. The discharge hose 9 can be extended into the ton bag 13 and can also be easily removed from the ton bag 13. The bottom of the discharge hose 9 is equipped with a support 10, and the top of the support 10 is fixed with hooks 11 at the four corners. The hooks 11 match the handles 12 of the ton bag 13. Silicon powder of a reasonable particle size inside the reaction chamber 2 is discharged into the ton bag 13 through the feeding hopper 7.

[0019] Multiple nozzles 14 are fixed to the side wall of the feeding hopper 7. The air outlet of the nozzle 14 is located inside the feeding hopper 7, and the air inlet of the nozzle 14 is located outside the feeding hopper 7 and connected to the air inlet pipeline 15. An air valve 16 is provided on the air inlet pipeline 15. The air inlet pipeline is connected to the outlet of the air compressor. The pressurized air is sent to the reaction chamber 2 through the nozzles 14 via the air inlet pipeline 15. Then, in the reaction chamber 2, the fine powder in the silicon powder is blown up. With the help of the dust suction hood 3, the fine powder is sucked away from the reaction chamber 2, effectively separating the fine powder in the silicon powder from the silicon powder particles of qualified particle size.

[0020] The bottom end of the bracket 10 is fixed with a pulley 17 to facilitate the movement of the bracket 10.

[0021] A weighbridge 18 is installed on the ground directly below the reaction chamber 2. The function of the weighbridge 18 is to measure the weight of the ton bag 13 after the silicon powder is recycled, and then compare the measurement result with the actual weight of the ton bag 13 sold. If the silicon powder is insufficient, it can be added and then sold normally. Compared with the method of returning all silicon powder to the production line, the time for removing fine powder from silicon powder is reduced by 80% by using this device, while avoiding the loss of silicon powder rework, saving loss costs, reducing costs and increasing efficiency.

[0022] The specific operation process of this embodiment is as follows:

[0023] Clean the inside of reaction chamber 2 and close the discharge valve 8 at the bottom of hopper 7.

[0024] Rotate the dust hood 3 on top of the reaction chamber 2 so that the dust hood 3 rotates horizontally 180 degrees, so that the dust hood 3 is away from the top of the reaction chamber 2, and pour the returned products to be disposed of into the reaction chamber 2.

[0025] Then open the air valve 16 and keep the air pressure at 5 MPa flowing into the reaction chamber 2. Rotate the dust collection hood 3 on the top of the reaction chamber 2 so that the dust collection hood 3 is placed directly above the reaction chamber 2. Adjust the air valve 16 and keep the air pressure at 50 MPa flowing into the reaction chamber 2. Blow the silicon powder in the reaction chamber 2 and blow up the fine powder in the product with the appropriate particle size. Under the action of the dust collection hood 3, dust collector and fan, the fine powder is drawn into the dust collection hood 3.

[0026] Observe the flow of black smoke (fine powder) from the top of reaction chamber 2. If the black smoke (fine powder) is small, the air flow rate can be increased. Conversely, if larger silicon powder particles are found splashing out of the chamber, the air flow rate can be decreased. After continuously introducing the appropriate air flow rate for 5 minutes, or if no black smoke is observed at the top of reaction chamber 2, it indicates that there is no fine powder in the silicon powder product, and the silicon powder in reaction chamber 2 is mainly a product with qualified particle size.

[0027] Place the ton bag 13 on the weighbridge 18 and hang the handle 12 on the hook 11 of the bracket 10. Close the air valve 16 and open the discharge valve 8 at the same time so that all the larger silicon powder particles in the reaction chamber 2 flow into the ton bag 13.

[0028] Then, the ton bag 13 is weighed under the action of the weighing scale 18. If the weight of silicon powder in the ton bag 13 does not meet the requirements for external sale, the missing silicon powder particles need to be injected into the ton bag 13.

[0029] Then seal and weigh, encode and transport.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for removing fine powder from industrial silicon powder, characterized in that, It includes a suction pipe, connecting pipe, suction hood, platform, reaction chamber, support frame, hooks, and floor scale; The platform is fixed with a vertically arranged reaction chamber, and the top of the reaction chamber is equipped with a dust suction hood. The outlet of the dust suction hood is connected to the inlet of the connecting pipe, and the outlet of the connecting pipe is connected to the inlet line of the dust suction pipe through a rotary joint. The bottom of the reaction chamber is provided with a feeding hopper, which is connected to the interior of the reaction chamber. The bottom of the feeding hopper is connected to a discharge hose through a discharge valve. The bottom of the discharge hose is provided with a bracket, and the top four corners of the bracket are fixed with hooks that match the handles of the ton bag. The side wall of the hopper is fixed with multiple nozzles. The air outlet of the nozzle is located inside the hopper, and the air inlet of the nozzle is located outside the hopper and connected to the air inlet pipeline. An air valve is provided on the air inlet pipeline.

2. The fine powder removal device for industrial silicon powder according to claim 1, characterized in that, The bottom end of the bracket is fixed with a pulley.

3. The fine powder removal device for industrial silicon powder according to claim 2, characterized in that, A floor scale is installed on the ground directly below the reaction chamber.

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