CN201258973Y - Large caliber gate valve - Google Patents
Large caliber gate valve Download PDFInfo
- Publication number
- CN201258973Y CN201258973Y CNU2008201849152U CN200820184915U CN201258973Y CN 201258973 Y CN201258973 Y CN 201258973Y CN U2008201849152 U CNU2008201849152 U CN U2008201849152U CN 200820184915 U CN200820184915 U CN 200820184915U CN 201258973 Y CN201258973 Y CN 201258973Y
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- China
- Prior art keywords
- valve
- cover
- lower cover
- steel pipe
- valve rod
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- Expired - Fee Related
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Abstract
The utility model discloses a large-caliber brake valve. A valve cover is a valve cover component; wherein, an upper cover, a lower cover and a steel tube which are coaxial are arranged in the valve cover; the lower cover is connected with a valve body; the upper cover and the lower cover are connected with the steel tube on the two end surfaces of the steel tube; a valve rod penetrates the steel tube; a corrugated pipe component is arranged in an annular space between the steel tube and the valve rod. The technical scheme is employed and the valve cover employs a board welding structure, thus not only reducing the leakage point, but also reducing the processing difficulty, thereby reducing the cost. The upper part of a valve cavity is provided with the stainless steel corrugated pipe of a movable seal element, and mediums are sealed in the valve cavity outside the valve rod and can not enter a stuffing box; therefore, the valve is more reliable on the aspect of preventing leakage than the common brake valve, ensures the sealed connection between the valve rod and the valve cover, leads the seal effect to be better, and can realize zero leakage.
Description
Technical field
The utility model belongs to the technical field of valve, and specifically, the utility model relates to a kind of heavy caliber gate valve.
Background technique
Gate valve is a kind of common valve, generally comprises valve body, valve rod, valve gap, open-shut device (flashboard) etc., and open-shut device (flashboard) moves and the function that realizes opening and closing along the Vertical direction of pipeline center line, and main rising cut off the mobilization that is transferred medium on pipeline.
The heavy caliber gate valve valve gap of prior art adopts foundry goods usually, is prone to pore, trachoma, and valve easily leaks outside, and can not be used in the medium pipeline poisonous, that permeability is strong.
In addition, the now general stuffing box that adopts and the sealing means of Gland still have to produce the slit of leaking and exist unavoidably, because valve rod is the motion that need carry out rectilinear direction and gyratory directions, it can not be shut.
The model utility content
Problem to be solved in the utility model provides a kind of heavy caliber gate valve that has the sylphon seal structure, its objective is the sealing effect that improves the heavy caliber gate valve.
To achieve these goals, the technological scheme taked of the utility model is:
This heavy caliber gate valve provided by the present invention, comprise valve body, flashboard, valve rod, valve gap, Stem Mut and handwheel, described valve gap is the valve gap assembly, wherein establish coaxial loam cake, lower cover and steel pipe, described lower cover is connected with valve body, on the both ends of the surface of described steel pipe, described loam cake is connected with steel pipe with lower cover, described valve rod passes steel pipe, and the annular space between steel pipe and valve rod is established bellows component.
For making the utility model more perfect, more detailed and concrete technological scheme below also further having proposed, to obtain best practical effect, realize goal of the invention better, and improve novelty of the present utility model and creativeness:
The material of described bellows component is a stainless steel.
Described loam cake, lower cover are steel plate materials, are connected the Placement that all adopts welding between described loam cake, lower cover and the steel pipe.
The utility model adopts technique scheme, and valve gap adopts the plate welding structure, has so both reduced leakage point, has reduced difficulty of processing again, thereby has reduced cost.As further improvement, the stuffing box that general valve is not only arranged at the valve rod place, and in the bottom of this stuffing box, movable sealing element corrugated stainless steel tubing is housed on valve pocket top, and medium is closed in the valve rod valve pocket in addition, can not enter stuffing box, therefore the more common gate valve of this valve is more reliable aspect preventing to leak outside, guarantee the sealing that valve rod is connected with valve gap, make sealing effect better, can realize zero leakage.
Description of drawings
Below expressed content of this Figure of description and the mark among the figure are made brief description:
Fig. 1 is a structural representation of the present utility model.
The mark that adopts among this figure is respectively:
1, valve body, 2, flashboard, 3, valve rod, 4, bellows component, 5, valve gap, 6, Stem Mut, 7, handwheel, 8, the valve gap assembly, 9, loam cake, 10, lower cover, 11, steel pipe.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and working principle, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technological scheme had more complete, accurate and deep understanding to help those skilled in the art.
The of the present utility model structure expressed as Fig. 1, the utility model is a kind of heavy caliber gate valve, comprises valve body 1, flashboard 2, valve rod 3, valve gap 5, Stem Mut 6 and handwheel 7.Valve gap 5 is fixedlyed connected with valve body 1, and the upper end of valve rod 3 and Stem Mut 6 are in transmission connection, and the lower end of valve body 1 is connected for the T type with flashboard 2.
In order to solve the problem that exists at the described present known technology of this specification background technique part and to overcome its defective, realize the goal of the invention of the sealing effect of raising heavy caliber gate valve, the technological scheme that the utility model is taked is:
As shown in Figure 1, this heavy caliber gate valve provided by the present invention, described valve gap 5 is a valve gap assembly 8, wherein establish coaxial loam cake 9, lower cover 10 and steel pipe 11, described lower cover 10 is connected with valve body 1, on the both ends of the surface of described steel pipe 11, described loam cake 9 is connected with steel pipe 11 with lower cover 10, described valve rod passes steel pipe 11, and the annular space between steel pipe 11 and valve rod 3 is established bellows component 4.Bellows component 4 welds together by upper and lower corrugated header and valve rod 3.Bottom flange 10 is fixedlyed connected with valve body 1.
This bellows, it also is snake belly tube, make the more piece type by the metal foil pipe, the variation performance of certain telescopicing performance and interior external diameter is arranged, external diameter forms good cooperating with steel pipe 11 and valve rod 3 in it, before not installing, can be by suitably elongating, external series gap in forming is conveniently packed into, two ends pressurization then closely cooperates its inner and outer surface respectively with the inner hole surface of steel pipe 11 and the periphery formation of valve rod 3.
Adopt the purpose of this structure to be that the valve gap of heavy caliber gate valve adopts the plate welding structure; Increase the ripple sealing configuration one.As further improvement, the stuffing box that general valve is not only arranged at the valve rod place, and in the bottom of this stuffing box, movable sealing element corrugated stainless steel tubing is housed on valve pocket top, and medium is closed in the valve rod valve pocket in addition, can not enter stuffing box, therefore the more common gate valve of this valve is more reliable aspect preventing to leak outside, guarantee the sealing that valve rod is connected with valve gap, make sealing effect better, can realize zero leakage.
The utility model also provides following exemplifying embodiment, provides reference for those skilled in the art implements the utility model:
Embodiment one:
The material of bellows component 4 described in the utility model is a stainless steel.Stainless bellows promptly has certain elasticity, intensity and toughness, and good decay resistance is arranged again simultaneously.
Embodiment two:
Loam cake 9 described in the utility model, lower cover 10 are steel plate materials, are connected the Placement that all adopts welding between described loam cake 9, lower cover 10 and the steel pipe 11.Valve gap adopts the plate welding structure, has so both reduced leakage point, has reduced difficulty of processing again, thereby has reduced material and manufacture cost.
Embodiment three:
Heavy caliber provided by the utility model has the gate valve of bellows, and its working procedure is as follows:
During unlatching, counterclockwise rotation is started to take turns 7 and is driven Stem Mut 6 rotations, and Stem Mut 6 drives valve rods 3 and moves up, and drives on the flashboard 2 and moves, and realizes opening.
When closing, clockwise rotate handwheel 7 and drive Stem Mut 6 rotations, Stem Mut 6 drives valve rods 3 and moves up, and drives on the flashboard 2 and moves, and realizes closing.
The technological scheme that the utility model adopted, exemplifying embodiment and prior art have tangible difference, have outstanding substantial characteristics, obtain remarkable progress in technology, and can extensively promote on industry.So, the utlity model has novelty, creativeness and practicability.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or design of the present utility model and technological scheme are directly applied to other occasion without improving, all within protection domain of the present utility model.
Claims (3)
1, a kind of heavy caliber gate valve, comprise valve body (1), flashboard (2), valve rod (3), valve gap (5), Stem Mut (6) and handwheel (7), it is characterized in that: described valve gap (5) is a valve gap assembly (8), wherein establish coaxial loam cake (9), lower cover (10) and steel pipe (11), described lower cover (10) is connected with valve body (1), on the both ends of the surface of described steel pipe (11), described loam cake (9) is connected with steel pipe (11) with lower cover (10), described valve rod passes steel pipe (11), annular space between steel pipe (11) and valve rod (3) is established bellows component (4).
2, according to the described heavy caliber gate valve of claim 1, it is characterized in that: the material of described bellows component (4) is a stainless steel.
3, according to the described heavy caliber gate valve of claim 1, it is characterized in that: described loam cake (9), lower cover (10) are steel plate materials, are connected the Placement that all adopts welding between described loam cake (9), lower cover (10) and the steel pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201849152U CN201258973Y (en) | 2008-08-22 | 2008-08-22 | Large caliber gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201849152U CN201258973Y (en) | 2008-08-22 | 2008-08-22 | Large caliber gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201258973Y true CN201258973Y (en) | 2009-06-17 |
Family
ID=40773207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201849152U Expired - Fee Related CN201258973Y (en) | 2008-08-22 | 2008-08-22 | Large caliber gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201258973Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968147A (en) * | 2014-05-29 | 2014-08-06 | 昆山维萨阀门有限公司 | Corrugated pipe brake valve |
-
2008
- 2008-08-22 CN CNU2008201849152U patent/CN201258973Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968147A (en) * | 2014-05-29 | 2014-08-06 | 昆山维萨阀门有限公司 | Corrugated pipe brake valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20130822 |