CN208074190U - A kind of bellows ammonia shut-off valve taking sealing structure - Google Patents
A kind of bellows ammonia shut-off valve taking sealing structure Download PDFInfo
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- CN208074190U CN208074190U CN201820492493.9U CN201820492493U CN208074190U CN 208074190 U CN208074190 U CN 208074190U CN 201820492493 U CN201820492493 U CN 201820492493U CN 208074190 U CN208074190 U CN 208074190U
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- valve
- bellows
- sealing
- flap
- valve rod
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Abstract
The utility model provides a kind of bellows ammonia shut-off valve taking sealing structure, including valve body, valve rod, flap and handwheel, the valve rod is arranged in the valve body, handwheel is arranged in described valve rod one end, flap is arranged in the other end, wherein, it is arranged with bellows on the valve rod, it is provided with valve clack cover on the flap, described bellows one end is arranged on valve clack cover, it is provided with sealing frustum on valve rod in the bellows, is provided on the valve body and the upper matched upper sealing surface of sealing frustum.This practicality increases upper sealing structure, to solve the problems, such as that sealing reliability is not high.
Description
Technical field
The utility model is related to a kind of shut-off valve more particularly to a kind of bellows ammonia shut-off valves taking sealing structure.
Background technology
Valve plays the medium in the pipeline where it important function of cut-out and throttling, and shut-off valve is used as one kind extremely
Important blocks class valve, and sealing is by applying torque to valve rod, and valve rod applies pressure to flap in the axial direction, makes
Valve clack sealing surface is fitted closely with sealing surface of seat, prevents slot leakage of the medium between sealing surface.Since such valve is opened
Frictional force is small between sealing surface during closing, relatively durable, and Lift is little, and manufacture is easy, easy to maintenance, is applicable not only to
Mesolow, and it is suitable for high pressure.Existing bellows stop valve, since its structure length is longer, fluid resistance is big, long-term to transport
After row when bellows damages or is poorly sealed, medium is easily flowed out from the gap between sealing surface, and sealing reliability is not strong.
Utility model content
In view of this, the utility model provides a kind of bellows ammonia shut-off valve taking sealing structure, sealed in increase
Structure, to solve the problems, such as that sealing reliability is not high.
The utility model uses following technical scheme：
A kind of bellows ammonia shut-off valve taking sealing structure, including valve body, valve rod, flap and handwheel, the valve rod
It is arranged in the valve body, handwheel is arranged in described valve rod one end, and flap is arranged in the other end, wherein is arranged with wave on the valve rod
Line pipe is provided with valve clack cover on the flap, and described bellows one end is arranged on valve clack cover, on the valve rod in the bellows
It is provided with sealing frustum, is provided on the valve body and the upper matched upper sealing surface of sealing frustum.
Preferably, it is provided with valve clack sealing ring on the flap, is provided on the valve body and is matched with valve clack sealing ring
Valve seals.
Preferably, the valve clack sealing ring is O-ring.
Preferably, the valve seals are O-ring.
The beneficial effects of the utility model are：
The utility model seals frustum on being arranged on the valve rod in bellows, and the setting of the corresponding position of valve body with it is upper
The matched upper sealing surface of frustum is sealed, dual-seal is constituted with bellows, when valve wide open state, valve rod is constituted with valve body
Upper sealing structure, when bellows damages or is poorly sealed, due to forming rigid seal between upper sealing frustum and upper sealing surface,
Medium leakage will not occur.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
In figure：1- valve bodies, 2- valve rods, 3- flaps, 4- handwheels, 5- bellowss, 6- upper sealing surfaces seal frustum, 8- on 7-
Valve clack sealing ring, 9- valve seals, 10- valve clack covers.
Specific implementation mode
As shown in Figure 1, the utility model provides a kind of bellows ammonia shut-off valve taking sealing structure, including valve body 1,
Valve rod 2, flap 3 and handwheel 4, valve rod 2 are arranged in valve body 1, and handwheel 4 is arranged in 2 one end of valve rod, and flap 3, valve rod is arranged in the other end
It is arranged with bellows 5 on 2, valve clack cover 10 is provided on flap 3,5 one end of bellows is arranged on valve clack cover 10, in bellows 5
Valve rod 2 on be provided with sealing frustum 7, be provided with and 7 matched upper sealing surface 6 of upper sealing frustum on valve body 1.Flap 3
On be provided with valve clack sealing ring 8, be provided on valve body 1 and 8 matched valve seals 9 of valve clack sealing ring.In the present embodiment
In, valve clack sealing ring 8, valve seals 9 are O-shaped rubber ring.
The utility model seals frustum 7 on being arranged on the valve rod 2 in bellows 5, and is arranged in the corresponding position of valve body 1
With 7 matched upper sealing surface 6 of upper sealing frustum, when valve is opened, upper sealing frustum 7 and upper sealing surface 6 are bonded completely, are formed
The rigid seal of hard alloy surface.In processing, the upper processing of sealing frustum 7 has a certain degree, for example, upper sealing frustum 7
Taper angle is 45 °, and upper sealing surface 6 is also machined to 45 °, in this way when rotation hand wheel 4 opens valve, the axial displacement of valve rod 2
Upwards, upper sealing frustum 7 moves upwards, and is bonded with upper sealing surface 6, forms sealing.
When valve is closed, the displacement of rotation hand wheel 4, valve rod 2 is downward, and valve rod 2 applies to flap 3 in the axial direction presses
Power makes valve clack sealing surface be fitted closely with valve body sealing surface by the pressure of valve rod 2, prevents seam of the medium between sealing surface
Gap leaks.In the present embodiment, to enhance the sealing effect of flap and valve body, valve clack sealing ring 8, valve body 1 are provided on flap 3
On be provided with 8 matched valve seals 9 of valve clack sealing ring, it is close that valve clack sealing ring 8 and valve seals 9 are all made of rubber
Seal.
The utility model bellows stop valve increases the upper sealing structure that sealing frustum 7 and upper sealing surface 6 are formed, on
Sealing structure and bellows 5 constitute dual-seal, and when valve wide open state, valve rod constitutes upper sealing structure with valve body, works as ripple
When pipe damages or is poorly sealed, due to forming rigid seal between upper sealing frustum and upper sealing surface, medium leakage will not occur.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (4)
1. a kind of bellows ammonia shut-off valve taking sealing structure, including valve body, valve rod, flap and handwheel, the valve rod are set
It sets in the valve body, handwheel is arranged in described valve rod one end, and flap is arranged in the other end, it is characterised in that：It is arranged on the valve rod
There is bellows, valve clack cover is provided on the flap, described bellows one end is arranged on valve clack cover, the valve in the bellows
It is provided with sealing frustum on bar, is provided on the valve body and the upper matched upper sealing surface of sealing frustum.
2. a kind of bellows ammonia shut-off valve taking sealing structure according to claim 1, it is characterised in that：The valve
It is provided with valve clack sealing ring on valve, is provided on the valve body and the matched valve seals of valve clack sealing ring.
3. a kind of bellows ammonia shut-off valve taking sealing structure according to claim 2, it is characterised in that：The valve
Flap seal circle is O-ring.
4. a kind of bellows ammonia shut-off valve taking sealing structure according to claim 2, it is characterised in that：The valve
Body sealing ring is O-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820492493.9U CN208074190U (en) | 2018-04-09 | 2018-04-09 | A kind of bellows ammonia shut-off valve taking sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820492493.9U CN208074190U (en) | 2018-04-09 | 2018-04-09 | A kind of bellows ammonia shut-off valve taking sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208074190U true CN208074190U (en) | 2018-11-09 |
Family
ID=64043952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820492493.9U Active CN208074190U (en) | 2018-04-09 | 2018-04-09 | A kind of bellows ammonia shut-off valve taking sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208074190U (en) |
-
2018
- 2018-04-09 CN CN201820492493.9U patent/CN208074190U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |