CN210566371U - Non-rising stem bellows gate valve - Google Patents
Non-rising stem bellows gate valve Download PDFInfo
- Publication number
- CN210566371U CN210566371U CN201921252195.3U CN201921252195U CN210566371U CN 210566371 U CN210566371 U CN 210566371U CN 201921252195 U CN201921252195 U CN 201921252195U CN 210566371 U CN210566371 U CN 210566371U
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- China
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- valve
- valve rod
- flashboard
- bellows
- hypomere
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Abstract
The utility model provides a dark pole bellows gate valve, which comprises a valve body, the flashboard, valve-stem nut, the valve rod, the bellows, valve gap and hand wheel, valve gap fixed connection is on the valve body, be equipped with the disk seat that is used for the direction flashboard in the runner of valve body, the valve rod includes upper segment valve rod and the hypomere valve rod of integrated into one piece shaping structure, the hand wheel suit is in upper segment valve rod upper end, the valve-stem nut suit is peripheral in hypomere valve rod lower part, the flashboard setting can slide from top to bottom in the disk seat, valve-stem nut sets firmly on the flashboard, the blind hole that is used for dodging hypomere valve rod lower part activity is offered to the flashboard, fixed sealing connection between bellows upper end and the valve gap inner chamber upper portion, the lower pot head of bellows is. The utility model discloses a this space surrounds the hypomere valve rod and can prevent that the inside gas or the liquid of valve body and valve gap from upwards leaking along the valve rod.
Description
Technical Field
The utility model relates to a gate valve field specifically is a dark pole bellows gate valve.
Background
The gate valve is widely applied to various fields of petroleum, chemical industry, steel, metallurgy, electric power and the like, and has the advantages of small flow resistance, small opening and closing torque, large application temperature range and the like compared with other valves for controlling medium flow of pipelines.
In the prior art, a valve rod of the gate valve drives a gate plate to lift for a long time, and the upper part of the valve rod rubs with a sealing filler on a valve cover for a long time to generate a gap between the upper part of the valve rod and the sealing filler, so that the sealing filler fails to cause upward leakage of gas or liquid inside the gate valve along the valve rod, and the leakage not only consumes energy and pollutes the environment, but also causes great harm in some flammable and explosive or extremely toxic working conditions in severe cases.
Disclosure of Invention
An object of the utility model is to provide a dark pole bellows gate valve to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a non-rising stem corrugated pipe gate valve comprises a valve body, a gate plate, a valve rod nut, a valve rod, a corrugated pipe, a valve cover and a hand wheel, wherein the valve cover is fixedly connected to the valve body, a valve seat for guiding the gate plate is arranged in a flow passage of the valve body, the valve rod comprises an upper valve rod and a lower valve rod which are integrally processed and formed into a structure, the upper valve rod penetrates out of the valve cover upwards, the hand wheel is sleeved at the upper end of the upper valve rod, the valve rod nut is sleeved at the periphery of the lower part of the lower valve rod, the gate plate is arranged in the valve seat and can slide up and down, the hand drives the hand wheel to drive the valve rod nut to be linked with the gate plate to move up and down, the valve rod nut is fixedly arranged on the gate plate, the bellows lower extreme and flashboard fixed sealing connection, the inside intercommunication of bellows, valve-stem nut and flashboard forms the space that holds the hypomere valve rod.
Further, a first sealing gasket is arranged between the valve body and the valve cover.
The utility model has the advantages that:
the inside intercommunication of bellows, valve-stem nut and flashboard forms the space that holds the hypomere valve rod, and the hypomere valve rod is located not only to have realized in this space that the valve rod is isolated with the valve body, has still realized that the valve rod is isolated with the valve gap, compares with prior art, the utility model discloses can prevent effectively that the inside gas or liquid of valve body and valve gap from upwards leaking along the valve rod.
Drawings
FIG. 1: a structure schematic diagram of a non-rising stem corrugated pipe gate valve.
FIG. 2: an enlarged schematic diagram of a non-rising stem bellows gate valve at the A position.
Detailed Description
The invention is further explained below with reference to the drawings:
referring to fig. 1, a non-rising stem bellows gate valve comprises a valve body 1, a gate plate 2, a valve stem nut 3, a valve stem 4, a bellows 5, a valve cap 6 and a hand wheel 7, wherein the valve cap 6 is fixedly connected to the valve body 1, a valve seat 12 for guiding the gate plate 2 is arranged in a flow passage 11 of the valve body 1, the valve stem 4 comprises an upper valve stem 41 and a lower valve stem 42 which are integrally processed and formed into a structure, the upper valve stem 41 extends upwards out of the valve cap 6, the hand wheel 7 is sleeved on the upper end of the upper valve stem 41, a trapezoidal thread i is arranged on the periphery of the lower valve stem 42, a trapezoidal thread i and a trapezoidal thread ii are arranged in the valve stem nut 3, the valve stem nut 3 is sleeved on the periphery of the lower valve stem 42, the valve stem nut 3 is fixedly arranged on the gate plate 2 by welding, the gate plate 2, staff drive hand wheel 7 drives 3 linkage flashboards 2 of 4 transmission valve stem nuts of valve rod and carries out the up-and-down motion, fixed sealing connection between 5 upper ends of bellows and the 6 inner chamber upper portions of valve gap, the pot head is established at valve stem nut 3 periphery under the bellows 5, fixed sealing connection between 5 lower extremes of bellows and the 2 top surfaces of flashboard, bellows 5, the inside intercommunication of valve stem nut 3 and flashboard 2 forms the space that holds hypomere valve rod 42, hypomere valve rod 42 is located and has not only realized valve rod 4 and valve body 1 completely cut off in this space, valve rod 4 and valve gap 6 completely cut off has still been realized, compared with the prior art, the utility model discloses can effectively prevent that the inside gas or the liquid of valve body 1 and valve gap.
The corrugated pipe 5 is made of stainless steel, the upper end of the corrugated pipe 5 is fixedly and hermetically connected with the upper part of the inner cavity of the valve cover 6 through welding, and the lower end of the corrugated pipe 5 is fixedly and hermetically connected with the top surface of the flashboard 2 through welding.
When a hand drives the hand wheel 7 to drive the valve rod 4 to drive the valve rod nut 3 to move upwards in linkage with the gate plate 2, the corrugated pipe 5 is compressed, and the flow passage 11 of the valve body 1 is opened; when the hand wheel 7 is driven by hands to drive the valve rod 4 to drive the valve rod nut 3 to move downwards in linkage with the gate plate 2, the corrugated pipe 5 extends, and the flow passage 11 of the valve body 1 is closed.
Further, referring to fig. 2, a first sealing gasket 8 for enhancing the sealing performance between the valve body 1 and the valve cover 6 is disposed between the valve body 1 and the valve cover 6.
Further, referring to fig. 1, the valve cap 6 includes a valve cap body 61, a support 62, a second sealing gasket for enhancing the sealing property between the support 62 and the valve cap body 61, a sealing packing 63, and a packing gland 64, the valve cap body 61 is fixedly connected to the valve body 1, the support 62 is fixedly connected to the valve cap body 61, the second sealing gasket is disposed between the support 62 and the valve cap body 61, a sealing packing cavity is formed in the support 62, the sealing packing 63 is disposed in the sealing packing cavity, and the packing gland 64 is fixedly connected to the support 62.
The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.
Claims (2)
1. The utility model provides a non-rising stem bellows gate valve, includes valve body, flashboard, valve-stem nut, valve rod, bellows, valve gap and hand wheel, valve gap fixed connection is on the valve body, be equipped with the disk seat that is used for the direction flashboard in the runner of valve body, the valve rod includes upper segment valve rod and the hypomere valve rod of integrated into one piece shaping structure, the valve gap is upwards worn out to the upper segment valve rod, the hand wheel suit is in upper segment valve rod upper end, the valve-stem nut suit is peripheral in hypomere valve rod lower part, the flashboard setting can slide from top to bottom in the disk seat, and staff drive hand wheel drives valve rod transmission valve-stem nut linkage: valve-stem nut sets firmly on the flashboard, the blind hole that is used for dodging hypomere valve rod lower part activity is offered to the flashboard, fixed sealing connection between bellows upper end and the valve gap inner chamber upper portion, the pot head is established at valve-stem nut periphery under the bellows, bellows lower extreme and flashboard fixed sealing connection, the inside intercommunication formation of bellows, valve-stem nut and flashboard holds the space of hypomere valve rod.
2. A non-rising stem bellows gate valve according to claim 1, wherein: a first sealing gasket is arranged between the valve body and the valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921252195.3U CN210566371U (en) | 2019-08-05 | 2019-08-05 | Non-rising stem bellows gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921252195.3U CN210566371U (en) | 2019-08-05 | 2019-08-05 | Non-rising stem bellows gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210566371U true CN210566371U (en) | 2020-05-19 |
Family
ID=70624809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921252195.3U Active CN210566371U (en) | 2019-08-05 | 2019-08-05 | Non-rising stem bellows gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210566371U (en) |
-
2019
- 2019-08-05 CN CN201921252195.3U patent/CN210566371U/en active Active
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