CN213668565U

CN213668565U - A screen pipe for polycrystalline silicon tail gas adsorption column

Info

Publication number: CN213668565U
Application number: CN201822257729.3U
Authority: CN
Inventors: 李书萍; 周海明; 江伟; 谢晓丽
Original assignee: Chengdu Ruiqi Zhizao Technology Co ltd
Current assignee: Chengdu Ruiqi Zhizao Technology Co ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2021-07-13
Anticipated expiration: 2028-12-29

Abstract

The utility model discloses a screen pipe for polycrystalline silicon tail gas adsorption column, including parent tube (5), parent tube (5) on be provided with rib (4), the outside winding of rib (4) have wire winding (3), parent tube (5) on the equipartition have a plurality of through-holes (6), the outside that the winding has parent tube (5) of wire winding (3) is provided with a sieve section of thick bamboo (2), the both ends of parent tube (5) be provided with joint (1), rib (4) evenly be provided with many along the axial of parent tube (5), rib (4) welding on parent tube (5), wire winding (3) welding on rib (4), adjacent wire winding (3) between the clearance be 0.1 ~ 0.15 mm. The utility model has the advantages of compact structure can improve the purity of adsorption column device product.

Description

A screen pipe for polycrystalline silicon tail gas adsorption column

Technical Field

The utility model relates to a polycrystalline silicon adsorbs the field, especially a screen pipe for polycrystalline silicon tail gas adsorption column.

Background

The adsorption column in the tail gas recovery system of the polycrystalline silicon device is extremely critical equipment and is used for absorbing residual HCL and chlorosilane in hydrogen so as to obtain high-purity hydrogen, and the traditional adsorption column hydrogen inlet and outlet manufacturing method comprises the following steps: 1. and uniformly drilling through holes on the inlet and outlet connecting pipes, wherein the size and the number of the drilled holes are determined according to technological parameters. 2. And uniformly winding a silk screen on the connecting pipe, and fixing by using a hoop, wherein the specification and the number of layers of the silk screen are determined according to the technological parameters. Such a filtration mode results in a lower purity of the product.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a sieve tube for a polysilicon tail gas adsorption column.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a screen pipe for polycrystalline silicon tail gas adsorption column, includes the parent tube, the parent tube on be provided with the rib, the outside winding of rib have the wire winding, the parent tube on the equipartition have a plurality of through-holes, the winding has the outside of the parent tube of wire winding to be provided with a sieve section of thick bamboo.

Specifically, joints are arranged at two ends of the base pipe.

Specifically, the ribs are uniformly arranged along the axial direction of the base pipe.

Specifically, the rib weld on the parent tube, the wire winding weld on the rib, adjacent wire winding between the clearance be 0.1 ~ 0.15 mm.

Specifically, the inside of base pipe one end be provided with the closure plate.

The utility model has the advantages of it is following: the utility model has the advantages that the life of filtration efficiency, screen pipe has been improved, the purity of adsorption column product has been improved greatly, the quality of enterprise's product has been improved greatly.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

in the figure: 1-joint, 2-screen cylinder, 3-wire winding, 4-rib, 5-base pipe and 6-through hole.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in figures 1-2, a screen pipe for polycrystalline silicon tail gas adsorption column, includes base pipe 5, base pipe 5 on be provided with rib 4, the outside winding of rib 4 have a wire winding 3, base pipe 5 on the equipartition have a plurality of through-holes 6, the outside of base pipe 5 that the winding has wire winding 3 is provided with a screen section of thick bamboo 2.

Further, joints 1 are arranged at two ends of the base pipe 5.

Furthermore, a plurality of ribs 4 are uniformly arranged along the axial direction of the base pipe 5.

Furthermore, the ribs 4 are welded on the base pipe 5, the wire windings 3 are welded on the ribs 4, and the gaps between the adjacent wire windings 3 are 0.1-0.15 mm.

Further, a blanking plate 7 is arranged inside one end of the base pipe 5.

The hydrogen inlet of the adsorption device adopts a detachable annular gas collecting pipe and a manifold gas inlet structure, so that the hydrogen can be distributed more uniformly in the equipment after entering the equipment. The sieve pipe is directly welded on each hydrogen inlet branch pipe, the sieve pipe adopts the structure that the stainless steel wire winding is joined in marriage to the manifold, for the structure that the stainless steel wire net was wrapped up in single tube or two pipes admit air before, has inside letting the more even entering equipment of air inlet, can be full of whole equipment basically, and the circulation in equipment is also more even, is difficult for blockking up, and easy abluent advantage is with hydrogen import pipe direct weld, is difficult for droing, does not need to change. The structure is firmer and firmer, and the service life is longer. The hole spacing precision of the sieve tube structure is higher, and the flow area of the medium can be well ensured. The sieve tube and the hydrogen inlet and outlet connecting pipe adopt a butt welding structure to prevent the medium from leaking.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a screen pipe for polycrystalline silicon tail gas adsorption column which characterized in that: including parent tube (5), parent tube (5) on be provided with rib (4), the outside winding of rib (4) have wire winding (3), parent tube (5) on the equipartition have a plurality of through-holes (6), the outside of wire winding (3) is provided with a sieve section of thick bamboo (2).

2. The screen pipe for the polysilicon tail gas adsorption column according to claim 1, wherein: joints (1) are arranged at two ends of the base pipe (5).

3. The screen pipe for the polysilicon tail gas adsorption column according to claim 1, wherein: the ribs (4) are uniformly provided with a plurality of ribs along the axial direction of the base pipe (5).

4. The screen pipe for the polysilicon tail gas adsorption column according to claim 1, wherein: the rib (4) is welded on the base pipe (5), and the wire winding (3) is welded on the rib (4).

5. The screen pipe for the polysilicon tail gas adsorption column according to claim 1, wherein: the gap between adjacent winding wires (3) is 0.1-0.15 mm.

6. The screen pipe for the polysilicon tail gas adsorption column according to claim 1, wherein: a blocking plate (7) is arranged inside one end of the base pipe (5).