CN218250812U - Dispel device of ferromagnetic impurity in silica flour - Google Patents

Abstract

A device for removing ferromagnetic impurities in silicon powder relates to the field of solid powder filtering and impurity removing equipment. The device comprises a vibration unit, a filtering unit, a material receiving hopper, an elastic support and an electromagnetic coil support, wherein a vibrator drives the filtering unit and silicon powder in the filtering unit to vibrate, the silicon powder is fully contacted with the electromagnetic coil under the driving of the vibrator, ferromagnetic impurities in the silicon powder are adsorbed and filtered by the electromagnetic coil, meanwhile, large particles and low-mesh silicon powder are filtered and reserved in the filtering units at all levels, and small particles and high-mesh silicon powder are separated out through a discharge hole of the material receiving hopper through the screen of the filtering units at all levels. The utility model provides a silica flour edulcoration filter equipment can realize the stage filtration, has advantages such as raw and other materials high-usage, filtration efficiency height, ferromagnetism impurity are easily clear away.

Description

Dispel device of ferromagnetic impurity in silica flour

Technical Field

The utility model relates to a solid powder filters edulcoration equipment field, specifically is a dispel device of ferromagnetic impurity in silica flour.

Background

As a basic raw material for photovoltaic product manufacture, polysilicon of photovoltaic power generation grade has extremely high requirements for purity index. In the production of polysilicon ingots, ferromagnetic impurities such as metallic iron/cobalt/nickel are usually doped in the raw material silicon powder, and the impurities in the silicon powder have a fatal influence on devices made of polysilicon, so that it is necessary to remove the ferromagnetic impurities in the raw material silicon powder before the polysilicon ingots are produced from the silicon powder. Chinese utility model patent (publication No. CN107282297 a) discloses a technical scheme for removing ferromagnetic impurities in silica sand with permanent magnet, although this scheme can also be used for removing ferromagnetic impurities in silica powder, continuous use of permanent magnet to remove ferromagnetic impurities can lead to ferromagnetic impurities to be adsorbed on the surface of permanent magnet in large quantities, which will greatly reduce the filtration efficiency, in addition, because permanent magnet has very strong adsorption force to ferromagnetic impurities, it is also a more tedious process to remove ferromagnetic impurities adsorbed on permanent magnet. In addition, high quality silicon powder raw material usually has a high mesh number, but if high quality silicon powder is obtained by filtering the silicon powder using only a high mesh number sieve, a large amount of large particle, low mesh number silicon powder is discarded.

SUMMERY OF THE UTILITY MODEL

To the problem that exists above, the utility model aims at providing a dispel device of ferromagnetic impurity in silica flour, the device can realize stage filtration, has advantages such as raw and other materials high-usage, filtration efficiency height, ferromagnetic impurity easily are clear away.

The technical scheme for realizing the purpose is as follows: a dispel device of ferromagnetic impurity in silica flour which characterized in that: the vibration unit, the filtering unit and the material receiving hopper are sequentially connected together from top to bottom, the bottom of the material receiving hopper is supported on the elastic support, and the electromagnetic coil support is arranged at a side position outside the filtering unit; the vibration unit comprises a vibrator and a vibrator bracket, and the vibrator is connected to the vibrator bracket; the filtering unit comprises a cavity, a screen, an electromagnetic coil, a connecting rod and a flexible cover plate, wherein the cavity adopts a structure with openings at two ends, the side wall of the cavity is provided with a through hole, the screen is connected in the cavity, the electromagnetic coil is arranged above the screen in the cavity, the connecting rod penetrates through the through hole in the side wall of the cavity to connect the electromagnetic coil arranged in the cavity to an electromagnetic coil support positioned at the outer side of the cavity, and the flexible cover plate is arranged on the connecting rod and used for sealing the through hole in the side wall of the cavity; the receiving hopper adopts an opening structure with a wide upper part and a narrow lower part, and the bottom opening is a discharge hole of the receiving hopper.

Furthermore, the filter unit has a plurality of, links together from top to bottom in proper order.

Furthermore, the elastic support comprises a base, and a plurality of spring hangers are fixedly mounted on the base.

The utility model has the advantages that:

1) The utility model provides a device is when filtering silica flour, and the solenoid that switches on with electricity can electromagnetic adsorption, filtration fall the ferromagnetism impurity in the silica flour, filters the completion back, and disconnection solenoid, the electromagnetic adsorption power on the solenoid disappears, and the ferromagnetism impurity that adsorbs on solenoid can be followed and automatically come off from the electromagnetism coil, consequently the utility model discloses efficiency, the convenience that solenoid filtered ferromagnetism impurity will be higher than the mode that the ferromagnetism impurity was filtered to the permanent magnet with showing.

2) As the silica flour of preparation polycrystalline silicon raw and other materials, the mesh number and the quality of silica flour are positive correlation, the utility model discloses a hierarchical filterable mode of a plurality of filter unit, with the silica flour purification of tiny particle, high mesh number, isolate as the raw and other materials of polycrystalline silicon, the large granule silica flour that filters out by filter unit at different levels is stayed in filter unit at different levels, and the vibration through the vibrator can be further broken up and form the high quality silica flour of tiny particle, high mesh number, then is isolated through filter unit. Large granule silica flour that can not be broken up by the vibrator has comparatively close mesh number among the filter unit at different levels, can be shifted out, then adopts the processing means of optimizing more to be processed into the silica flour of tiny particle, high mesh number then through according to silica flour mesh number the utility model provides a device is purified, is separated out and produces high-quality silica flour raw and other materials.

Drawings

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

Detailed Description

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

As shown in fig. 1, the utility model discloses a vibration unit 1, filter unit 2, connect hopper 3, elastic support 4, and solenoid support 5, vibration unit 1, filter unit 2, connect hopper 3 from the top down to loop through tang 61 and connect, lock together through screw 62 between the public female tang, vibration unit 1 with connect a plurality of filter unit 2 of having connected gradually between the hopper 3, a hierarchical filtration is used for carrying out the silica flour, the separation, the bottom sprag that connects hopper 3 is on elastic support 4, solenoid support 5 sets up the lateral position outside filter unit 2, solenoid support 5 adopts the support that has cradling piece 51, for the current open design. The vibration unit comprises a vibrator 11 and a vibrator support 12, wherein the vibrator 11 is connected to the vibrator support 12, and the vibrator 11 is used for driving the filter unit 2 and silicon powder in the filter unit 2 to vibrate. The filtering unit 2 comprises a cavity 21, a screen 22, an electromagnetic coil 23, a connecting rod 24 and a flexible cover plate 25, wherein the cavity 21 is of a structure with two open ends, through holes are formed in the side wall of the cavity 21, the screen 22 is connected in the cavity 21, the screen 22 in each stage of filtering unit 2 can select a specific mesh number according to the filtering requirement of actual silicon powder, the electromagnetic coil 23 is arranged above the screen 22 in the cavity, the connecting rod 24 penetrates through the through holes in the side wall of the cavity 21 to connect the electromagnetic coil 23 arranged in the cavity 21 to a support rod 51 of an electromagnetic coil support 5 positioned outside the cavity 21, the connecting rod 24 is further provided with the flexible cover plate 25 for sealing the through holes in the side wall of the cavity 21, so that the silicon powder in the filtering unit 2 is prevented from overflowing from the through holes in the side wall of the cavity 21, the flexible cover plate 25 can be made of flexible materials such as rubber or silica gel, the electromagnetic coil 23 in the filtering unit 2 is fixed on the electromagnetic coil support 5 through the connecting rod 24, and therefore the electromagnetic coil 23 can be driven by the vibrating unit 1 to be fully contacted with the fixed electromagnetic coil 23, and ferromagnetic impurities in the filtering unit 2 can be filtered effectively. The receiving hopper 3 adopts an opening structure with a wide upper part and a narrow lower part, and the bottom opening is a discharge hole 31 of the receiving hopper; the elastic support 4 comprises a base 41, a plurality of spring hangers 42 are fixedly mounted on the base, the spring hangers 42 are connected with the bottom of the receiving hopper 3, and the spring hangers 42 can be made of the existing open products, such as the spring hangers of the cangzhou medium seven-pipe equipment company limited model number T3.

After the silicon powder is added into the uppermost filter unit 2, the vibrator 11 drives the filter unit 2 and the silicon powder in the filter unit 2 to vibrate, the silicon powder is fully contacted with the electromagnetic coil 23 under the driving of the vibrator 11, ferromagnetic impurities in the silicon powder are adsorbed and filtered by the electromagnetic coil 23, meanwhile, large-particle and low-mesh silicon powder is filtered and remained in each stage of filter unit 2, and small-particle and high-mesh silicon powder passes through the screen 22 of each stage of filter unit 2 and is separated out through the discharge port 31 of the receiving hopper 3.

Claims (3)

1. A dispel device of ferromagnetic impurity in silica flour which characterized in that: the vibration unit, the filtering unit and the receiving hopper are sequentially connected together from top to bottom, the bottom of the receiving hopper is supported on the elastic support, and the electromagnetic coil support is arranged at the side position outside the filtering unit; the vibration unit comprises a vibrator and a vibrator bracket, and the vibrator is connected to the vibrator bracket; the filtering unit comprises a cavity, a screen, an electromagnetic coil, a connecting rod and a flexible cover plate, wherein the cavity adopts a structure with openings at two ends, the side wall of the cavity is provided with a through hole, the screen is connected in the cavity, the electromagnetic coil is arranged above the screen in the cavity, the connecting rod penetrates through the through hole in the side wall of the cavity to connect the electromagnetic coil arranged in the cavity to an electromagnetic coil support positioned at the outer side of the cavity, and the flexible cover plate is arranged on the connecting rod and used for sealing the through hole in the side wall of the cavity; the receiving hopper adopts an opening structure with a wide upper part and a narrow lower part, and the bottom opening is a discharge hole of the receiving hopper.

2. The device for removing ferromagnetic impurities from silicon powder according to claim 1, wherein the device comprises: the filter unit has a plurality of, links together from top to bottom in proper order.

3. The device for removing ferromagnetic impurities from silicon powder according to claim 1, wherein the device comprises: the elastic support comprises a base, and a plurality of spring supporting and hanging frames are fixedly mounted on the base.

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