CN212616395U

CN212616395U - Bellows gate valve that sealing performance is high

Info

Publication number: CN212616395U
Application number: CN202020680889.3U
Authority: CN
Inventors: 杨选成; 杨贤珍; 林学佳; 蒋丽达
Original assignee: Wenzhou Jinbo Valve Co ltd
Current assignee: Wenzhou Jinbo Valve Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2021-02-26
Anticipated expiration: 2030-04-28

Abstract

The utility model discloses a bellows gate valve that sealing performance is high, including valve body, valve gap and well bucket, the valve body sets up in well bucket below, the valve gap sets up in well bucket top, forms the runner in the valve body, and the both sides of runner form feed inlet and discharge gate, the inside valve pocket that forms of valve body and valve gap, well bucket, the inside vertical valve rod that sets up of valve pocket, valve rod periphery cover is equipped with the bellows subassembly, set up sealed the pad on the well bucket, the valve body up end sinks to form the seal groove, sealed pad correspondence stretches into in the seal groove, set up seal gasket in the seal groove, seal gasket laminating seal groove inner wall has improved the leakproofness between valve body and well bucket through setting up seal groove and sealed pad between well bucket and the valve body.

Description

Bellows gate valve that sealing performance is high

Technical Field

The utility model relates to a gate valve technical field, especially a bellows gate valve that sealing performance is high.

Background

The corrugated pipe gate valve is also called a corrugated pipe sealing stop valve, and a metal barrier is formed between a fluid medium and the atmosphere through automatic roll welding to ensure the design of zero leakage of a valve rod. The inside of the corrugated pipe gate valve adopts a corrugated pipe structure, and the lower end of a stainless steel corrugated pipe is welded on the valve rod so as to prevent process fluid from corroding the valve rod. The other end is arranged between the valve body and the valve cover to form static seal. Adopt dual sealed design if the bellows inefficacy valve rod filler also can avoid leaking, the bellows welds in the operating performance that the valve rod remains stable, avoids because valve plug vibration causes the valve rod vibration. The stop valve is most suitable for pipelines of steam, inflammable, explosive, heat conducting oil, high-purity, toxic and other media, and the stop valve used in a system with corrosive and toxic liquid or gas as a medium needs to be well protected against corrosion and leakage.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a bellows gate valve that sealing performance is high.

The utility model provides a bellows gate valve that sealing performance is high, includes valve body, valve gap and well bucket, the valve body sets up in well bucket below, the valve gap sets up in well bucket top, forms the runner in the valve body, and the both sides of runner form feed inlet and discharge gate, inside valve pocket that forms of valve body and valve gap, well bucket, the inside vertical valve rod that sets up of valve pocket, the valve rod is equipped with the bellows in well bucket and valve body department cover, well bucket sets up sealed the pad with the junction of valve body, the valve body up end sinks to form the seal groove, well bucket lower part forms sealed boss, what sealed boss corresponds stretches into in the seal groove, set up in the seal groove sealed the pad, the inner wall and then sealed boss and the valve body of connecting of sealed pad.

Preferably, the sealing groove is of an annular structure.

Preferably, at least two layers of annular bosses are formed on the inner wall of the sealing groove, and the annular bosses are distributed on the inner wall of the sealing groove at intervals up and down.

Preferably, the joint of the sealing gasket and the sealing groove is provided with a fixing groove, and the fixing groove is matched with the annular boss.

Preferably, the section of the sealing gasket is U-shaped, and the sealing gasket is made of elastic rubber.

Preferably, a packing is further arranged between the valve cover and the valve rod, a packing gland is arranged on the packing gland, and an eyelet bolt is arranged between the packing gland and the valve cover.

Preferably, the top end of the valve cover is further provided with a valve rod linkage part, the valve rod linkage part is a hand wheel, and the hand wheel is connected with the top end of the valve rod.

The beneficial effects of the utility model reside in that: the utility model discloses a set up seal groove and sealed the pad between valve body and well bucket, set up resilient gasket in the seal groove, improved the leakproofness of valve body and well bucket.

Drawings

FIG. 1 is a schematic structural view of the present invention,

fig. 2 is an enlarged view of fig. 1 at a.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings.

In order to solve the technical problem, the utility model provides a bellows gate valve.

The utility model provides a bellows gate valve that sealing performance is high, includes valve body 1, valve gap 5 and well bucket 2, valve body 1 sets up in well bucket 2 below, valve gap 5 sets up in well bucket 2 top, forms the runner in the valve body 1, and the both sides of runner form feed inlet and discharge gate, valve body and valve gap, the inside valve pocket that forms of well bucket, the inside vertical valve rod that sets up of valve pocket, valve rod 3 is equipped with bellows 4 in well bucket 2 and the 1 cover of valve body, well bucket 2 sets up sealed pad 10 with the junction of valve body 1, 1 up end of valve body sinks and forms seal groove 12, well bucket 2 lower part forms sealed boss 13, the sealed boss 3 corresponds stretches into in seal groove 12, set up in the seal groove 12 sealed pad 10, the sealed inner wall that fills up 10 laminating seal groove 12 and then sealed connection sealed boss 13 and valve body 1 of sealing.

A connecting ring 15 is arranged in the middle of the corrugated pipe 4, the corrugated pipe 4 is divided into an upper corrugated pipe 14 and a lower corrugated pipe 16 by the connecting ring 15, and both the upper corrugated pipe 14 and the lower corrugated pipe 16 are welded and fixed with the connecting ring 15.

The sealing groove 12 is of an annular structure, at least two layers of annular bosses 11 are formed on the inner wall of the sealing groove 12, the annular bosses 11 are distributed on the inner wall of the sealing groove 2 at intervals from top to bottom, three layers of annular bosses 11 in the sealing groove 12 can be further arranged, and the annular bosses 11 are distributed on the inner wall of the sealing groove at equal intervals.

The sealing groove 12 with the rectangular cross section is matched with the sealing gasket 13 with the rectangular cross section, so that the sealing effect is higher than that of the arc-shaped sealing groove 12 and the sealing gasket 10.

The joint of the sealing gasket and the sealing groove 12 is provided with a fixing groove (not shown), and the fixing groove is matched with the annular boss 11.

The cross-section of seal gasket is the U font, seal gasket 10 is the elastic rubber material, seal gasket 10 sets up the fixed slot with seal groove 12 laminating department, the fixed slot cooperates with annular boss 11, seal gasket 10 is elastic material, the material can be natural rubber, water-fast ageing-resistant EPT rubber, the butyl rubber that sealing performance is good and resistant oily butyronitrile.

The annular boss 11 extends into the fixing groove, so that when the gasket is detached, the gasket is prevented from being bonded with the sealing gasket 13 due to long-term use, and the sealing gasket 10 is fixed in the sealing groove 12 through the matching between the annular boss 11 and the fixing groove.

And a packing 7 is also arranged between the valve cover 5 and the valve rod 3, a packing gland 8 is arranged on the packing 7 in a filling mode, and an eyelet bolt 6 is arranged between the packing gland 8 and the valve cover 5.

The top end of the valve cover 5 is also provided with a valve rod linkage part 9, the valve rod linkage part 9 is a hand wheel, the hand wheel is connected with the top end of the valve rod 3, and the valve rod linkage part 9 can also be an electric head and a pneumatic head.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bellows gate valve that sealing performance is high, includes valve body, valve gap and well bucket, the valve body sets up bucket below in, the valve gap sets up in well bucket top, forms the runner in the valve body, and the both sides of runner form feed inlet and discharge gate, valve body and valve gap, the inside valve pocket that forms of well bucket, the inside vertical valve rod that sets up of valve pocket, the valve rod is equipped with bellows, its characterized in that in well bucket and valve body department cover: the sealing structure is characterized in that a sealing gasket is arranged at the joint of the middle barrel and the valve body, the upper end face of the valve body is sunk to form a sealing groove, a sealing boss is formed at the lower part of the middle barrel, the sealing boss correspondingly extends into the sealing groove, the sealing gasket is arranged in the sealing groove, and the sealing gasket is attached to the inner wall of the sealing groove and then is connected with the sealing boss and the valve body in a sealing mode.

2. The bellows gate valve with high sealing performance according to claim 1, wherein: the seal groove is of an annular structure.

3. The bellows gate valve with high sealing performance according to claim 2, wherein: at least two layers of annular bosses are formed on the inner wall of the sealing groove, and the annular bosses are distributed on the inner wall of the sealing groove at intervals up and down.

4. The bellows gate valve with high sealing performance according to claim 1 or 2, wherein: the joint of the sealing gasket and the sealing groove is provided with a fixing groove, and the fixing groove is matched with the annular boss.

5. The bellows gate valve with high sealing performance according to claim 1, wherein: the cross-section of the sealing gasket is U-shaped, and the sealing gasket is made of elastic rubber.

6. The bellows gate valve with high sealing performance according to claim 1, wherein: and a packing is also arranged between the valve cover and the valve rod, a packing gland is arranged on the packing gland, and an eyelet bolt is arranged between the packing gland and the valve cover.

7. The bellows gate valve with high sealing performance according to claim 1, wherein: the valve rod linkage piece is arranged at the top end of the valve cover and is a hand wheel, and the hand wheel is connected with the top end of the valve rod.