CN217126352U

CN217126352U - Feeding device for reducing dust emission in silicon powder loading process

Info

Publication number: CN217126352U
Application number: CN202221038389.5U
Authority: CN
Inventors: 李大杰; 刘群; 冯全宝
Original assignee: Leshan Gcl New Energy Technology Co ltd
Current assignee: Leshan Gcl New Energy Technology Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-08-05
Anticipated expiration: 2032-04-28

Abstract

The utility model discloses a feeding device for reducing dust emission in the silicon powder loading process, which comprises a feeding hopper, a gravity turning plate and a central shaft lever; the central shaft rod is overlapped with the central line of the gravity turning plate and is welded and fixed with the central line of the gravity turning plate, and two ends of the central shaft rod are respectively connected to the inner wall of the feeding hopper in a shaft mode and can freely rotate along the shaft joint point, so that the gravity turning plate can turn over around the central shaft rod on the feeding hopper. The feeding device adopts the silicon powder tank car provided with the gravity turning plate, so that the silicon powder tank car can be automatically opened during charging and automatically closed when stopping charging, and the hopper opening of the silicon powder tank car is prevented from being in an open state when a new bag of silicon powder is switched, so that dust is prevented from being raised outwards.

Description

Feeding device for reducing dust emission in silicon powder loading process

Technical Field

The utility model belongs to the polycrystalline silicon field relates to silica flour transportation equipment, especially a silica flour loading in-process reduces feed arrangement of dust emission.

Background

The silicon powder is used as a main raw material for cold hydrogenation system production in polysilicon production, and outsourcing silicon powder is used as a main silicon powder source. According to the actual production and environmental protection requirements, the purchased bagged silicon powder is manually transported to a cold hydrogenation device through a silicon powder tank truck and is transported to a cold hydrogenation system by a set of closed pneumatic conveying device to participate in reaction. However, in the process of loading silicon powder into the silicon powder tank wagon, the silicon powder has small particle size, so that dust is easily blown out, air pollution is caused, and meanwhile, the body of an operator is damaged, so that the dust blowing-out needs to be reduced as much as possible in the loading process.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to solve the technical problem that to prior art not enough, provide a gravity and turn over board infundibulate feed arrangement, the dust of avoiding silica flour loading in-process to produce raises outward to the atmosphere and causes pollution and the injury of dust to the human body to the environment.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a feeding device for reducing dust emission in the silicon powder loading process comprises a feeding hopper, a gravity turning plate and a central shaft rod; the central shaft rod is overlapped with the central line of the gravity turning plate and is welded and fixed with the central line of the gravity turning plate, and two ends of the central shaft rod are respectively connected to the inner wall of the feeding hopper in a shaft mode and can freely rotate along the shaft joint point, so that the gravity turning plate can turn over around the central shaft rod on the feeding hopper.

Specifically, the feeding hopper comprises an upper straight-cylinder feeding section and a lower funnel-shaped discharging section, wherein an upper opening is larger than a lower opening; the gravity turning plate and the central shaft rod are arranged on the straight cylinder feeding section together, and the outer diameter of the plate surface of the gravity turning plate is matched with the inner diameter of the straight cylinder feeding section; when the gravity turning plate is horizontal, the upper part and the lower part of the feeding hopper are separated, so that silicon material dust below the feeding hopper is prevented from being discharged from the feeding hopper; when the silicon powder on the gravity turning plate is stacked and turned over, the stacked silicon powder is conveyed into the silicon powder tank downwards through the funnel-shaped discharging section.

Specifically, the gravity turning plate comprises a circular plane turning plate and a balancing weight welded below the plane turning plate.

Preferably, the balancing weight is an isosceles triangle, and the long bottom edge of the balancing weight is welded on the central line of the bottom of the planar turnover plate.

Furthermore, hangers used for lifting, rotating and moving the whole feeding hopper are welded on two sides of the top of the feeding hopper.

Furthermore, an abrasion-resistant rubber ring is sleeved on the outer wall of the funnel-shaped blanking section.

Has the advantages that:

the feeding device adopts the silicon powder tank car provided with the gravity turning plate, so that the silicon powder tank car can be automatically opened during charging and automatically closed when stopping charging, and the hopper opening of the silicon powder tank car is prevented from being in an open state when a new bag of silicon powder is switched, so that dust is prevented from being raised outwards.

Drawings

These and/or other advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings and the following detailed description.

Fig. 1 is a schematic view of the overall structure of the feeding device.

Fig. 2 is a schematic top view of the gravity flap.

Fig. 3 is a bottom structure schematic diagram of the gravity flap.

Fig. 4 is a schematic view of the working state structure of the feeding device.

Wherein each reference numeral represents:

1, a feeding hopper; 11 a straight cylinder feeding section; 12 funnel-shaped blanking section; 2, turning over a plate by gravity; 21, a plane turning plate; 22 a balancing weight; 3 a central shaft; 4, hanging a lug; 5, a silicon powder tank; 51 silicon powder tank feed inlet.

Detailed Description

The invention will be better understood from the following examples.

The drawings in the specification show the structure, ratio, size, etc. only for the purpose of matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and not for the purpose of limiting the present invention, so the present invention does not have the essential meaning in the art, and any structure modification, ratio relationship change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and achievable purpose of the present invention. In addition, the terms "upper", "lower", "front", "rear" and "middle" are used in the present specification for the sake of clarity, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative relationship can be changed or adjusted without substantial technical changes.

As shown in fig. 1, the feeding device for reducing dust emission in the silicon powder loading process comprises a feeding hopper 1, a gravity turning plate 2 and a central shaft rod 3; the central shaft lever 3 overlaps with the central line of the gravity turning plate 2, the central shaft lever and the gravity turning plate are welded and fixed, two ends of the central shaft lever 3 are respectively connected to the inner wall of the feeding hopper 1 in a shaft mode and can freely rotate along the shaft connection point, and therefore the gravity turning plate 2 can turn around the central shaft lever 3 on the feeding hopper 1.

Wherein, feed hopper 1 includes straight section of thick bamboo feeding section 11 on upper portion and funnel-shaped unloading section 12 of below, and straight section of thick bamboo feeding section 11 inside diameter is 800mm, and height 500mm, and the bottom opening diameter of funnel-shaped unloading section 12 is 500mm, and whole feed hopper 1 is high 1000 mm. The gravity turning plate 2 and the central shaft rod 3 are installed on the straight cylinder feeding section 11 together, and the outer diameter of the plate surface of the gravity turning plate 2 is matched with the inner diameter of the straight cylinder feeding section 11; when the gravity turning plate 2 is horizontal, the upper part and the lower part of the feeding funnel 1 are separated, so that silicon material dust below is prevented from being discharged from the feeding funnel 1; when the silicon powder on the gravity turning plate 2 is stacked to be turned over, the stacked silicon powder is fed into the silicon powder tank downwards through the hopper-shaped blanking section 12. The two sides at the top of the feeding funnel 1 are welded with lugs 4 for lifting and rotating the whole feeding funnel 1. The outer wall of the funnel-shaped blanking section 12 is sleeved with a wear-resistant rubber ring.

As shown in fig. 2 and 3, gravity flap 2 comprises a circular planar flap 21 and a counterweight 22 welded below planar flap 21. The balancing weight 22 is an isosceles triangle with the height of about 200mm, the long bottom edge of the balancing weight is welded on the central line of the bottom of the planar turning plate 21, and the balancing weight is 10 kg. The planar turning plate 21 is a carbon steel plate with a flat surface, and the balancing weight 22 is triangular iron made of carbon steel.

As shown in fig. 1, when the hopper is used, the hopper is moved by a crane, and the hooks are hung on the hanging lugs 4 on both sides for hanging. When the silicon powder tank truck enters the loading station, the crane hoists the feeding funnel 1 to the upper part of the silicon powder tank 5 and transfers the silicon powder tank to the feeding port 51 of the silicon powder tank, so that the funnel-shaped blanking section 12 is clamped into the feeding port 51 of the silicon powder tank, and at the moment, the feeding funnel 1 is stably clamped on the feeding port 51 of the silicon powder tank because the rubber ring sleeved on the outer wall of the funnel-shaped blanking section 12 has large friction force.

Then, silicon powder is fed from the top of the feeding funnel 1 and is stacked on the planar turning plate 21 of the gravity turning plate 2, and the gravity turning plate 2 is turned over due to the insufficient weight of the silicon powder because the weight of the balancing weight 22 is large. When the silicon powder is stacked to a certain weight and the weight of the two sides of the plane turning plate 21 is uneven, the gravity turning plate 2 turns over to send the silicon powder into the silicon powder tank 5, and then the silicon powder automatically turns back to the plane initial state and blocks the silicon powder flying dust below from being discharged. Therefore, air pollution caused by dust flying in the silicon powder loading process can be greatly reduced.

Certainly, under the condition of a small part, the condition that weight might appear equaling in plane turning plate 21 both sides, gravity turning plate 2 will not overturn this moment, needs the manual work to exert force to intervene this moment, pushes down gravity turning plate 2 one side for gravity turning plate 2 overturns and carries out the unloading.

The utility model provides a silica flour loading in-process reduces dust emission's feed arrangement's thinking and method, specifically realize that this technical scheme's method and approach are many, above only the utility model discloses a preferred embodiment should point out, to the ordinary skilled person in this technical field, not deviating from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improvements should also be regarded as with moist decorations the utility model discloses a protection scope. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. A feeding device for reducing dust emission in a silicon powder loading process is characterized by comprising a feeding hopper (1), a gravity turning plate (2) and a central shaft lever (3); the central shaft lever (3) is overlapped with the central line of the gravity turning plate (2) and is welded and fixed with the central line, and the two ends of the central shaft lever (3) are respectively connected to the inner wall of the feeding hopper (1) in a shaft mode and can freely rotate along the shaft joint point, so that the gravity turning plate (2) can turn around the central shaft lever (3) in the feeding hopper (1).

2. The feeding device for reducing dust emission in the silicon powder loading process according to claim 1, wherein the feeding funnel (1) comprises an upper straight-cylinder feeding section (11) and a lower funnel-shaped discharging section (12), and the upper opening is larger than the lower opening; the gravity turning plate (2) and the central shaft rod (3) are installed on the straight cylinder feeding section (11) together, and the outer diameter of the plate surface of the gravity turning plate (2) is matched with the inner diameter of the straight cylinder feeding section (11); when the gravity turning plate (2) is horizontal, the upper part and the lower part of the feeding hopper (1) are separated, so that silicon material dust below is prevented from being discharged from the feeding hopper (1); when the silicon powder on the gravity turning plate (2) is stacked and turned over, the stacked silicon powder is sent into the silicon powder tank downwards through the funnel-shaped blanking section (12).

3. The feeding device for reducing dust emission in the silicon powder loading process according to claim 1, wherein the gravity turning plate (2) comprises a circular planar turning plate (21) and a balancing weight (22) welded below the planar turning plate (21).

4. The feeding device for reducing dust emission in the silicon powder loading process according to claim 3, wherein the balancing weight (22) is an isosceles triangle, and the long bottom edge of the balancing weight is welded on the bottom center line of the planar turnover plate (21).

5. The feeding device for reducing dust emission in the silicon powder loading process according to claim 1, wherein lugs (4) for lifting and moving the whole feeding funnel (1) are welded on two sides of the top of the feeding funnel (1).

6. The feeding device for reducing dust emission in the silicon powder loading process according to claim 2, wherein an abrasion-resistant rubber ring is sleeved on the outer wall of the funnel-shaped blanking section (12).