CN218250817U

CN218250817U - Collection device who uses in ferromagnetic metal impurity process is got rid of to silica flour

Info

Publication number: CN218250817U
Application number: CN202222470051.3U
Authority: CN
Inventors: 周炜
Original assignee: Yangzhou Jinkaili Sport Products Co ltd
Current assignee: Yangzhou Jinkaili Sport Products Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-01-10
Anticipated expiration: 2032-09-19

Abstract

A collecting device used in the process of removing ferromagnetic metal impurities from silicon powder relates to the field of powder collecting equipment. The air inlet is discharged into the silicon powder collecting unit by the fan, the silicon powder coming out of the silicon powder filtering device is driven to move towards the collecting unit, the silicon powder is settled and gathered at the conical bottom of the collecting unit and is discharged into one material receiving tank of the material receiving unit, and part of fine-particle silicon powder can be adsorbed on the surface of the filter bag and blown down by high-pressure gas of the high-pressure gas compressor and is discharged into the other material receiving tank of the material receiving unit to form a silicon powder raw material with higher quality. The device of the utility model has the advantages of silica flour collection efficiency is high, environmental pollution is little, can realize that the second grade is collected in grades.

Description

Collection device who uses in ferromagnetic metal impurity in-process is got rid of to silica flour

Technical Field

The utility model relates to a powder collecting device field specifically is a collection device who gets rid of ferromagnetic metal impurity in-process at silica flour and use.

Background

The silicon powder is used as a raw material for manufacturing the polysilicon ingot, ferromagnetic metal impurities are removed, and after filtration, the separated silicon powder has a high mesh number, so that the silicon powder can be partially suspended and float in the air, collection is not facilitated, and the floating silicon powder as dust can cause certain pollution to the environment. In addition, since the mesh number and mass of the raw material silicon powder are generally in direct proportion, the higher-quality silicon powder is more easily suspended and scattered in the air, and therefore collection is more difficult. Therefore, only one collecting container is arranged at the discharge port of the filtering device, so that the collecting efficiency is low, and the problem of a large amount of dust pollution is also caused.

SUMMERY OF THE UTILITY MODEL

To the problem that exists above, the utility model aims at a get rid of ferromagnetic metal impurity in-process collection device at silica flour, the device have silica flour collection efficiency height, environmental pollution little, can realize advantages such as second grade hierarchical collection.

The technical scheme for realizing the purpose is as follows: the utility model provides a collection device that uses in ferromagnetic metal impurity process is got rid of to silica flour which characterized in that: the device comprises a fan, a silicon powder guiding unit, a silicon powder collecting unit, a high-pressure gas compressor, a gas valve, a discharge valve and a material receiving unit; the silicon powder guiding unit comprises a first shell, the top of the first shell is provided with an inlet, the bottom of the first shell is provided with an outlet, an air outlet of the fan is connected with the inlet of the first shell, silicon powder filtering equipment is arranged inside the first shell, and the shell of the silicon powder filtering equipment is connected with the inside of the first shell through a spring support and hanger; the collecting unit comprises a second shell, a first through hole and a second through hole are formed in the upper portion of the second shell, a conical discharge hole is formed in the lower portion of the second shell, the outlet of the first shell is connected with the first through hole of the second shell, the second through hole is connected with an air inlet of the fan through a gas valve, a side interface is arranged at the inlet of the gas valve and is connected with the high-pressure gas compressor, the conical discharge hole is connected with the discharge valve, the material receiving unit is arranged below the discharge valve, a filter bag is arranged inside the second shell, and an opening of the filter bag is connected with the upper wall of the second shell and is communicated with the second through hole.

Further, the material receiving unit comprises an electric displacement table, and two material receiving tanks which are adjacently arranged are connected to the electric displacement table.

Further, the silicon powder filtering device arranged inside the first shell is a silicon powder filtering device which removes ferromagnetic metal impurities through magnetic adsorption and is disclosed in the prior art.

The utility model has the advantages that:

1) The utility model provides a collecting device adopts be that closed silica flour collects the structure, and silica flour filtration equipment is set up the inside at collecting device, by silica flour filtration equipment purification, the silica flour of isolating by the wind drive, transferred to the collecting element to subside, gather in the toper bottom of collecting element, open the bleeder valve, during silica flour was discharged and is connect the material jar. Because the fan adopts the inner loop wind to produce the drive wind to subside, gather and can seal the silica flour that suspends, drifts away in the collection unit in the silica flour of collection unit toper bottom in the casing of collection unit, so the utility model provides a collection equipment not only possesses the advantage that the silica flour collection rate is high, can not cause dust pollution to the environment moreover basically.

2) The mesh number and the mass of the silicon powder, which is the raw material of the polycrystalline silicon, are in direct proportion, and the silicon powder adsorbed on the surface of the filter bag has a relatively higher mesh number, so that the silicon powder has higher quality. Will subside, gather and shift to one of the material receiving unit of silica flour of collecting unit toper bottom and connect after the material jar, the utility model provides a collecting device can make the silica flour that adsorbs on crossing the filter bag surface to drop through the high-pressure gas that high-pressure gas compressor produced, then these silica flour that drop subsides, gathers in collecting unit toper bottom, can be collected in another material receiving tank that connects the material unit alone, as higher-quality silica flour raw and other materials, consequently the utility model provides a collecting device can also show the added value that increases the silica flour raw and other materials after filtering on the basis that can effectively collect silica flour.

Drawings

Fig. 1 is a schematic diagram of the system of the present invention.

FIG. 2 is a schematic structural diagram of a silicon powder filtering apparatus in the example.

Detailed Description

The following examples are intended to illustrate the invention in more detail, but not to further limit the invention.

As shown in the figures 1 and 2, the utility model comprises a fan 1, a silicon powder guiding unit 2, a silicon powder collecting unit 3, a discharge valve 4, a gas valve 5, a high-pressure gas compressor 6 and a material receiving unit 7.

The silicon powder guiding unit 2 comprises a first shell 21, an inlet 26 is arranged at the top of the first shell 21, an outlet 27 is arranged at the bottom of the first shell 21, an air outlet of the fan 1 is connected with the inlet 26 of the first shell 21, a silicon powder filtering device 22 is arranged inside the first shell 21, the silicon powder filtering device 22 is a silicon powder filtering device which is disclosed in the prior art and removes ferromagnetic metal impurities through magnetic adsorption, the silicon powder guiding unit comprises a third shell 221, a vibrator 222 and a receiving hopper 223, the vibrator 222 is connected to the top of the third shell 221, the receiving hopper 223 is connected to the bottom of the third shell 221, a plurality of filtering sieves 224 are sequentially connected inside the third shell 221 from top to bottom, a permanent magnet 225 is arranged between every two adjacent filtering sieves 224, silicon powder is added into the third shell 221 from the upper end, the vibrator 222 drives other parts in the filtering device 22 and the silicon powder in the third shell 221 to vibrate, the silicon powder is in full contact with the permanent magnet 225 under the driving of the vibrator 222, ferromagnetic impurities in the filtering device are adsorbed and filtered out by the permanent magnet 225, the silicon powder passes through the filtering sieves 224, the silicon powder passes through discharge holes of the receiving hopper 223, the filtering device 22 is suspended inside the shell 21, and the first shell 21 is suspended by a spring hanger.

The collecting unit 3 comprises a second shell 31, the upper part of the second shell 31 is provided with a first through hole 34 and a second through hole 35, the lower part of the second shell 31 is provided with a conical discharge hole 33, the outlet 27 of the first shell is connected with the first through hole 34 of the second shell 31, the second through hole 35 is connected with an air inlet of the fan 1 through a gas valve 5, an inlet of the gas valve 5 is provided with a side interface 51, the side interface 51 is connected with the high-pressure gas compressor 6, the conical discharge hole 33 is connected with the discharge valve 4, the receiving unit 7 is arranged below the discharge valve 4, the receiving unit 7 comprises an electric displacement table 71, two adjacent receiving tanks 72 are connected onto the electric displacement table 71, the electric displacement table 71 drives the receiving tanks 72 to move so that the filling ports of the receiving tanks 72 align to the conical discharge hole 33, a filter bag 36 is arranged inside the second shell 31, and the opening of the filter bag 36 is connected with the upper wall of the second shell 31 and communicated with the second through hole 35.

The utility model discloses a collecting device's collection process as follows: the air valve 5 is opened, the fan 1 enters air from the side of the air valve 5 and discharges into the silicon powder collecting unit 3, silicon powder coming out of the receiving hopper 223 of the silicon powder filtering device 22 is driven to move towards the collecting unit 3 and enters the collecting unit 3 from the first through hole 34 on the second shell 31 of the collecting unit 3, the silicon powder is filtered by the filter bag 36 and stays in the collecting unit 3 and is settled and gathered at the conical bottom of the collecting unit 3, part of fine-particle silicon powder can be adsorbed on the surface of the filter bag 36, and the air driving the silicon powder can penetrate through the filter bag 36 and is sucked by the fan 1 to serve as an air inlet source of the fan 1, so that the fan does not need to obtain an air inlet source from the outside, and the outlet air cannot be discharged into the environment. The electric displacement table 71 is used for driving the material receiving tanks 72, the filling opening of one material receiving tank 72 in the material receiving unit 7 is aligned to the conical discharge opening 33, the discharge valve 4 is opened, and the silicon powder can be discharged into the material receiving tank 72. Closing the gas valve 5 and the fan 1, opening the high-pressure gas compressor 6, blowing down the fine-particle silicon powder adsorbed on the surface of the filter bag 36 by using high-pressure gas generated by the high-pressure gas compressor 6, gathering the fine-particle silicon powder at the conical bottom of the collection unit 3, driving the material receiving tank 72 by using the electric displacement table 71, aligning the filling opening of the other material receiving tank 72 in the material receiving unit 7 with the conical discharge opening 33, opening the discharge valve 4, discharging the fine-particle silicon powder into the material receiving tank 72, and forming a silicon powder raw material with higher quality by using the fine-particle silicon powder.

Claims

1. The utility model provides a collection device that uses in ferromagnetic metal impurity process is got rid of to silica flour which characterized in that: the device comprises a fan, a silicon powder guiding unit, a silicon powder collecting unit, a high-pressure gas compressor, a gas valve, a discharge valve and a material receiving unit; the silicon powder guiding unit comprises a first shell, the top of the first shell is provided with an inlet, the bottom of the first shell is provided with an outlet, an air outlet of the fan is connected with the inlet of the first shell, silicon powder filtering equipment is arranged inside the first shell, and the shell of the silicon powder filtering equipment is connected with the inside of the first shell through a spring support and hanger; the collecting unit comprises a second shell, a first through hole and a second through hole are formed in the upper portion of the second shell, a conical discharge hole is formed in the lower portion of the second shell, the outlet of the first shell is connected with the first through hole of the second shell, the second through hole is connected with an air inlet of the fan through a gas valve, a side interface is arranged at the inlet of the gas valve and is connected with the high-pressure gas compressor, the conical discharge hole is connected with the discharge valve, the material receiving unit is arranged below the discharge valve, a filter bag is arranged inside the second shell, and an opening of the filter bag is connected with the upper wall of the second shell and is communicated with the second through hole.

2. The collecting device used in the process of removing ferromagnetic metal impurities from silicon powder according to claim 1, wherein: the material receiving unit comprises an electric displacement table, and two material receiving tanks which are adjacently arranged are connected to the electric displacement table.

3. The collecting device used in the process of removing ferromagnetic metal impurities from silicon powder according to claim 1, wherein: the silicon powder filtering device arranged inside the first shell is a silicon powder filtering device which is disclosed in the prior art and removes ferromagnetic metal impurities through magnetic adsorption.