CN2804512Y - Gas gate valve - Google Patents
Gas gate valve Download PDFInfo
- Publication number
- CN2804512Y CN2804512Y CN 200520042299 CN200520042299U CN2804512Y CN 2804512 Y CN2804512 Y CN 2804512Y CN 200520042299 CN200520042299 CN 200520042299 CN 200520042299 U CN200520042299 U CN 200520042299U CN 2804512 Y CN2804512 Y CN 2804512Y
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- CN
- China
- Prior art keywords
- valve
- gas
- skeleton
- sealing pad
- gate valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sliding Valves (AREA)
Abstract
The utility model relates to a gate valve structure which controls gas transmission. The purpose is to provide a gas gate valve having the advantages that the sealing performance is improved and the zero leakage is achieved. The gas gate valve mainly comprises a gear box, a valve cap, a framework-shaped composite sealing pad sheet, a valve rod, a valve rod nut, a gate plate and a valve body. The utility model is characterized in that the framework-shaped composite sealing pad sheet is a composite structure formed by combining a round ring-shaped framework with a sealing pad sheet in a plat plate shape. The framework-shaped composite sealing pad sheet with the structure is applied to the connecting position of the valve cap and the valve body of the gate valve, the sealing performance of the gate valve is improved and the absolute zero leakage is achieved.
Description
Technical field
The utility model relates to the valve mechanism of combustion gas in pipe conveying procedure, particularly relates to a kind of gate valve structure that combustion gas is carried of controlling.
Background technique
Gate valve as the universal product, the key of its technology is a sealing problem, particularly be applied in gate valve in the combustion gas generation of leakage more can not be arranged, this does not still waste resource problem, cause the safety problem of fire alarm especially, the Gas-combustion valve that prior art is made, what adopt between its valve body and the valve gap is the rubber asbestos plate sealing technique.Though some factory improves material, through after the immersed water test, still have micro-leakage between valve body and the valve gap, influenced Security and reliability that valve uses.
Summary of the invention
The purpose of this utility model is to provide a kind of can improve sealing, reaches the Gas-combustion valve of zero leakage.
The technical solution of the utility model is: a kind of Gas-combustion valve, mainly comprise gear-box 1, valve gap 2, skeleton composite sealing pad 3, valve rod 4, Stem Mut 5, flashboard 6 and valve body 7 are formed, its characteristics are that described skeleton composite sealing pad 3 adopts skeleton 31 and gasket seal 32 composite structures, the concrete structure of this skeleton composite sealing pad 3 comprises: skeleton 31 combines for the rubber ring of cross section circle and plane 32 liang of parts of gasket seal, the rubber ring diameter of section D of skeleton 31 should be greater than the thickness b of gasket seal 32, the rubber ring of skeleton 31 adopts fluorine rubber or nitrile butadiene rubber to make, gasket seal 32 adopts General Purpose Rubber plate or asbestos packing sheet to make, and the skeleton composite sealing pad of this kind structure is applied in valve gap 2 and the valve body 7 De Even places of connecing can reach absolute zero leakage.
The utility model has the advantages that: owing to adopted the sealing configuration of skeleton composite sealing pad, equal the rubber ring of skeleton 31 and the dual seal action of rubber plate of gasket seal 32, thereby improved the sealability of gate valve, reach zero leakage, therefore also improved the safety in utilization of Gas-combustion valve greatly.
Description of drawings
Fig. 1, be the structural representation of the utility model Gas-combustion valve;
The structural representation (amplification) of the skeleton composite sealing pad 3 in Fig. 2, the utility model.
The meaning that each mark is expressed as follows respectively shown in the accompanying drawing:
The skeleton composite sealing pad 4----of 1----gear-box 2----valve gap 3----valve rod
5----Stem Mut 6----flashboard 7----valve body 31----skeleton 32----gasket seal
The thickness of D----skeleton 31 rubber ring diameter of section b----gasket seals 32
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Present embodiment is that a kind of model is the Gas-combustion valve of RQZ48W-8Q, and its bore is that DN150mm, pressure are 0.8Mpa.
By structure shown in Figure 1, wherein: Stem Mut 5 adopts the casting of QT400-15 spheroidal graphite cast iron; Diameter is that the valve rod 4 of Φ 30mm adopts the 2Cr13 stainless steel turning to form, and its screw thread is processed into double end, and pitch is 10mm, and the square toes of its upper end are 25 * 25mm, height 40mm; Gear-box 1, valve gap 2 and valve body 7 all adopt the casting of QT450-10 spheroidal graphite cast iron; About two shoe brake plates 6 adopt the casting of QT500-7 spheroidal graphite cast iron; Middle valve gap 2 and the valve body 7 of placing balladeur train formula composite sealing pad 3, bolt, nut by eight couples of M18 are connected and fixed; The composite structure gasket seal that skeleton composite sealing pad 3 adopts the fluorine rubber garden ring skeleton of the thick XB350 rubber gasket+Φ 5.3mm diameter of section of 4.5mm to form.
After the present embodiment Gas-combustion valve adopted common processes to install, debug, through immersed water test, leak-down rate was zero.
Claims (4)
1, a kind of Gas-combustion valve, mainly comprise gear-box [1], valve gap [2], skeleton composite sealing pad [3], valve rod [4], Stem Mut [5], flashboard [6] and valve body [7] composition, it is characterized in that described skeleton composite sealing pad [3] is the composite structure that skeleton [31] and gasket seal [32] combine, wherein: skeleton [31] is the rubber ring of cross section circle; Gasket seal [32] is plane rubber plate.
2, Gas-combustion valve according to claim 1 is characterized in that the thickness b of the rubber ring diameter of section D of described skeleton [31] greater than gasket seal [32].
3, Gas-combustion valve according to claim 1 is characterized in that the rubber ring of described skeleton [31] adopts fluorine rubber or nitrile butadiene rubber to make.
4, Gas-combustion valve according to claim 1 is characterized in that described gasket seal [32] adopts General Purpose Rubber plate or asbestos packing sheet to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042299 CN2804512Y (en) | 2005-06-08 | 2005-06-08 | Gas gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042299 CN2804512Y (en) | 2005-06-08 | 2005-06-08 | Gas gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2804512Y true CN2804512Y (en) | 2006-08-09 |
Family
ID=36909804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520042299 Expired - Fee Related CN2804512Y (en) | 2005-06-08 | 2005-06-08 | Gas gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2804512Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271467A (en) * | 2020-01-20 | 2020-06-12 | 宁波真格液压科技有限公司 | Gate valve |
-
2005
- 2005-06-08 CN CN 200520042299 patent/CN2804512Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271467A (en) * | 2020-01-20 | 2020-06-12 | 宁波真格液压科技有限公司 | Gate 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: 20060809 Termination date: 20140608 |