CN211202890U

CN211202890U - Corrugated pipe stop valve

Info

Publication number: CN211202890U
Application number: CN201922394939.1U
Authority: CN
Inventors: 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: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-07
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a corrugated pipe stop valve, which comprises a valve body, a valve clack valve rod, a corrugated pipe, a valve cover, a filler, a guide block and a hand wheel, wherein the valve rod is vertically arranged in the center inside the valve body and the valve cover, the corrugated pipe surrounds the bottom of the valve rod, the valve clack is arranged at the bottom of the valve rod, a corrugated pipe seat is arranged at the top of the corrugated pipe, the corrugated pipe seat is arranged between the valve body and the valve cover, gasket groups are arranged at the joint of the valve rod and the valve cover and the joint of the valve body, the filler is arranged at the joint of the valve rod and the valve cover, a filler gland is arranged above the filler, the guide block is arranged at one side of the valve cover, the guide block is positioned in front of the valve rod, the guide block is fixedly connected with the valve rod through a screw, the hand wheel is arranged, and the fastener can make the valve clack be difficult for droing when the work.

Description

Corrugated pipe stop valve

Technical Field

The utility model relates to a stop valve technical field, especially a bellows stop valve.

Background

The corrugated pipe stop 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 so as to ensure the design of zero leakage of the valve rod. The inside of the corrugated pipe stop 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. It is most suitable for the pipelines of steam, inflammable, explosive, heat conducting oil, high purity, toxic and other mediums.

However, the existing valve flap is a wear part and needs to be replaced frequently, and the connection mode of the valve flap and the bottom of the valve rod under the common condition makes the valve flap difficult to replace and disassemble, so that the bellows stop valve convenient for replacing the valve flap is needed at present.

Disclosure of Invention

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

The utility model provides a bellows stop valve, includes valve body, valve clack, valve rod, bellows, valve gap, packs, guide block and valve rod interlock spare, the valve rod interlock spare is installed at the valve rod top, its characterized in that: the valve cover is arranged above the valve body, a flow passage is formed in the valve body, a feed inlet and a discharge outlet are formed on two sides of the flow passage, the valve body and the valve cover form a valve cavity, the valve rod is vertically arranged in the valve cavity, the corrugated pipe is sleeved on the lower section of the valve rod, the bottom of the valve rod is provided with a valve clack, the top of the corrugated pipe is provided with a corrugated pipe seat, the joint of the valve body and the valve cover is provided with a gasket group for sealing, the corrugated pipe seat is positioned between the valve body and the valve cover and is connected with the gasket group, the top of the valve rod is provided with a valve rod nut, the valve rod is in limit connection with the valve cover through a valve rod nut, the joint of the valve rod and the valve cover is provided with a filler, a packing gland is arranged above the packing, a guide groove is arranged on one side of the valve cover facing the valve rod, the guide groove extends along the moving direction of the valve rod, the guide block is fixed on the valve rod, and one end of the guide block extends into the guide groove and moves along the guide groove.

Preferably, the gasket component comprises an upper gasket and a lower gasket, the upper gasket is located at the joint of the corrugated pipe seat and the valve cover, and the lower gasket is located at the joint of the corrugated pipe seat and the valve body.

Preferably, the valve cover is provided with a bottom ring groove at one position connected with the corrugated pipe seat, the upper part of the upper gasket is positioned in the bottom ring groove, the valve body is provided with a top ring groove at one position connected with the corrugated pipe seat, and the lower part of the lower gasket is positioned in the bottom ring groove.

Preferably, the bottom of the corrugated pipe seat is provided with a mounting groove, the upper part of the corrugated pipe extends into the mounting groove, the mounting groove is provided with a top wall, the top wall of the mounting groove is provided with a limiting groove, and the top wall of the corrugated pipe is mounted in the limiting groove.

Preferably, a pin shaft is fixed inside the packing gland, an eyelet bolt in sliding connection with the pin shaft penetrates through the pin shaft, and the top of the eyelet bolt is connected with a second nut.

Preferably, the guide block is fixedly connected with the valve rod through a screw.

Preferably, the valve rod linkage part is a hand wheel, and the hand wheel is fixedly connected with the valve rod through a locking nut.

Preferably, the valve clack center forms the installation cavity, and the valve rod clamps with the valve clack and installs the connection.

Preferably, the periphery of the joint of the valve rod and the valve clack is provided with a sealing strip, the valve clack is provided with a sealing connecting groove, the sealing strip is positioned in the sealing connecting groove and is in sealing connection with the valve rod and the valve clack, and a fastener is arranged between the valve clack and the valve rod.

The beneficial effects of the utility model reside in that: the utility model discloses a all set up the gasket at valve gap and ripple tube socket junction and valve body and ripple tube socket junction, increased the leakproofness, through valve clack and valve rod through clamping and being connected, and set up the fastener and fix valve rod and valve clack, make the operation at the change valve clack become simpler, and the fastener can let the valve clack be difficult for droing under operating condition.

Drawings

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

figure 2 is an enlarged view at a,

fig. 3 is an enlarged view at B.

Reference numerals:

1. the valve comprises a valve body, 2, a valve clack, 3, a corrugated pipe, 4, a valve rod, 5, a corrugated pipe seat, 6, a gasket group, 7, a bolt, 8, a nut, 9, packing, 10, a valve cover, 11, a pin shaft, 12, an eyelet bolt, 13, a second nut, 14, a guide block, 15, a screw, 16, a valve rod nut, 17, a hand wheel, 18, a locking nut, 19, a guide groove, 20, a packing gland, 21, a sealing strip, 22, a bottom ring groove, 23, a top ring groove, 24, a mounting groove, 25, a limiting groove, 27, a sealing connecting groove, 28, a feeding hole, 29, a discharging hole, 61, an upper gasket, 62 and a lower gasket.

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.

Referring to the attached drawing 1, the bellows stop valve of the present invention includes a valve body 1, a valve flap 2, a valve rod 4, a bellows 3, a valve cover 10, a packing 9, a guide block 14, and a hand wheel 17. The valve cover 10 is arranged above the valve body 1, a flow channel is formed in the valve body 1, a feed inlet 28 and a discharge outlet 29 are formed on two sides of the flow channel, a valve cavity communicated with the flow channel is formed in the valve body 1, the valve rod 4 is vertically arranged in the valve cavity, the corrugated pipe is sleeved on the lower section of the valve rod 4, the bottom of the valve rod 4 is provided with a valve clack 2, the top of the corrugated pipe is provided with a corrugated pipe seat 5, the corrugated pipe seat 5 is positioned between the valve body 1 and the valve cover 10, a gasket group 6 is arranged at the joint of the valve body 1 and the valve cover 10 for sealing, the corrugated pipe seat 5 is positioned between the valve body 1 and the valve cover 10 and connected with the gasket group 6, the top of the valve rod 4 is provided with a valve rod nut 16, the valve rod 4 is in limit connection with the valve cover 10 through the valve rod nut 16, a packing 9 is arranged, the guide groove 19 extends along the moving direction of the valve rod 4, the guide block 14 is fixed on the valve rod 4, and one end of the guide block 14 extends into the guide groove 19 and moves along the guide groove 19.

The corrugated pipe seat 5 is located between the valve body 1 and the valve cover 10 and connected with the gasket group 6, and as shown in fig. 1, the gasket group 6 is arranged at the connection position of the corrugated pipe seat 5 and the valve cover 10 and the connection position of the corrugated pipe seat 5 and the valve body 1. The valve rod 4 is limited in left and right positions by a valve rod nut 16, a pin shaft 11 is fixed inside the packing gland 20, an eyelet bolt 12 connected with the pin shaft 11 in a sliding mode penetrates through the pin shaft 11, and a second nut 13 is connected to the top of the eyelet bolt 12. The guide block 14 is arranged on one side of the valve cover 10, the guide block 14 is fixedly connected with the valve rod 4 through a screw 15, a hand wheel 17 is arranged on the top of the valve rod 4, and the hand wheel 17 is fixedly connected with the valve rod 4 through a locking nut 18.

Specifically, valve clack 2 has been clamped to valve rod 4 bottom, set up fastener (not shown in the figure) between valve clack 2 and the valve rod 4, the fastener can be rivet, bolt, when valve clack 2 long-term use produces wearing and tearing and need change, open valve gap 10 and take out valve rod 4 and valve clack 2, dismantle valve clack 2 through adjusting the fastener, setting up of fastener 21 makes valve clack 2 increase when operating condition and the friction between valve rod 4, after using for a long time, the valve clack is difficult and the valve rod 4 between carry out the landing.

When the stop valve is in a stop state, the lower end of the valve clack 2 is connected with a communication port in the valve body 1 and blocks the flow passage. The cross section of the communicating port of the valve body 1 is in an inverted cone shape, and the valve clack 2 is in an inverted cone shape at the matching part of the valve clack and the communicating port. Thus, the sealing performance between the shut-off valve and the shut-off valve in the shut-off state can be ensured.

Two degrees of freedom of the valve rod 4 in the horizontal direction are limited through the guide block 14, so that the valve rod 4 is not prone to shaking in the working state, the action is more stable, and friction between the valve rod 4 and the valve body 1 is reduced.

Specifically, the valve cover 10 is provided with a bottom ring groove 22 at a position connected with the corrugated pipe seat 5, the upper part of the upper gasket 61 is positioned in the bottom ring groove 22, the valve body 1 is provided with a top ring groove 23 at a position connected with the corrugated pipe seat 5, and the lower part of the lower gasket 62 is positioned in the bottom ring groove 22. The air tightness of the valve body is improved by arranging the double-layer gasket.

The bottom of the corrugated pipe seat 5 is provided with a mounting groove 24, the upper part of the corrugated pipe 3 extends into the mounting groove 24, the mounting groove 24 is provided with a top wall, the top wall of the mounting groove 24 is provided with a limiting groove 25, and the top wall of the corrugated pipe is mounted in the limiting groove 25.

The hand wheel 17 is fixedly connected with the valve rod 4 through a locking nut 18.

The center of the valve clack 2 forms an installation cavity, and the valve rod 4 is connected with the valve clack 2 in a clamping mode.

The periphery of the junction of valve rod 4 and valve clack 2 is provided with sealing strip 21, valve clack 2 sets up sealed groove 27 that connects, sealing strip 21 is located sealed groove 27 and sealing connection valve rod 4 and valve clack 2. Further, a fastening piece is arranged between the valve clack 2 and the valve rod 4, and the fastening piece can be a pin or the like.

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 stop valve, includes valve body, valve clack, valve rod, bellows, valve gap, packs, guide block and valve rod interlock spare, the valve rod interlock spare is installed at the valve rod top, its characterized in that: the valve cover is arranged above the valve body, a flow passage is formed in the valve body, a feed inlet and a discharge outlet are formed on two sides of the flow passage, the valve body and the valve cover form a valve cavity, the valve rod is vertically arranged in the valve cavity, the corrugated pipe is sleeved on the lower section of the valve rod, the bottom of the valve rod is provided with a valve clack, the top of the corrugated pipe is provided with a corrugated pipe seat, the joint of the valve body and the valve cover is provided with a gasket group for sealing, the corrugated pipe seat is positioned between the valve body and the valve cover and is connected with the gasket group, the top of the valve rod is provided with a valve rod nut, the valve rod is in limit connection with the valve cover through a valve rod nut, the joint of the valve rod and the valve cover is provided with a filler, a packing gland is arranged above the packing, a guide groove is arranged on one side of the valve cover facing the valve rod, the guide groove extends along the moving direction of the valve rod, the guide block is fixed on the valve rod, and one end of the guide block extends into the guide groove and moves along the guide groove.

2. The bellows shut-off valve of claim 1, wherein: the gasket component comprises an upper gasket and a lower gasket, the upper gasket is located at the joint of the corrugated pipe seat and the valve cover, and the lower gasket is located at the joint of the corrugated pipe seat and the valve body.

3. The bellows shut-off valve of claim 2, wherein: the valve body is provided with a top ring groove at one part connected with the corrugated pipe seat, and the lower part of the lower gasket is positioned in the bottom ring groove.

4. The bellows shut-off valve of claim 1, wherein: the corrugated pipe support is characterized in that a mounting groove is formed in the bottom of the corrugated pipe support, the upper portion of the corrugated pipe extends into the mounting groove, the mounting groove is provided with a top wall, a limiting groove is formed in the top wall of the mounting groove, and the top wall of the corrugated pipe is mounted in the limiting groove.

5. The bellows shut-off valve according to any one of claims 1 to 4, wherein: and a pin shaft is fixed in the packing gland, an eyelet bolt in sliding connection with the pin shaft penetrates through the pin shaft, and the top of the eyelet bolt is connected with a second nut.

6. The bellows shut-off valve according to any one of claims 1 to 4, wherein: the guide block is fixedly connected with the valve rod through a screw.

7. The bellows shut-off valve according to any one of claims 1 to 4, wherein: the valve rod linkage piece is a hand wheel, and the hand wheel is fixedly connected with the valve rod through a locking nut.

8. The bellows shut-off valve according to claim 2 or 4, wherein: the valve rod is connected with the valve clack in a clamping mode.

9. The bellows shut-off valve of claim 8, wherein: the periphery of the junction of valve rod and valve clack is provided with the sealing strip, the valve clack sets up the sealed groove that connects, the sealing strip is located the sealed inslot that connects and sealing connection valve rod and valve clack, be equipped with the fastener between valve clack and the valve rod.