CN207740472U - Special material pressure balancing stop valve - Google Patents
Special material pressure balancing stop valve Download PDFInfo
- Publication number
- CN207740472U CN207740472U CN201721778262.6U CN201721778262U CN207740472U CN 207740472 U CN207740472 U CN 207740472U CN 201721778262 U CN201721778262 U CN 201721778262U CN 207740472 U CN207740472 U CN 207740472U
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- Prior art keywords
- flap
- valve
- valve body
- hole
- secondary lobe
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Abstract
A kind of spy's material pressure balancing stop valve, including valve body epicoele and valve body cavity of resorption, the two connectivity part is equipped with valve seat, flap be connected on valve rod and and valve seat corresponding matching, flap be internally provided with can upper and lower displacement secondary lobe, secondary lobe is fixed on valve stem end, valve rod is simultaneously and flap limit is mobile coordinates, the bottom of flap is equipped with through-hole, the bottom of secondary lobe and the cooperation of through-hole upper surface constitute sealing pair, and the side wall of flap is additionally provided with relief hole, and the outer end of relief hole is connected to valve body epicoele, inner end is led to above through-hole, and pressure equalisation passage is constituted.The utility model it is reasonable for structure, medium flow direction is " high in and low out " from the top down, and medium is identical to the active force of flap and the direction of displacement of flap when valve is closed, and can significantly reduce operational torque, pressure under the sealing of flap is increased simultaneously, and sealing performance is promoted.Secondary lobe first moves up when unlatching, opens pressure equalisation passage, reduces pressure difference, then promotes flap and open easily, is not necessarily to big operational torque.
Description
Technical field：
The utility model is related to a kind of shut-off valve, the shut-off valve made especially with the special material such as titanium, zirconium.
Background technology：
The corrosive medium of some process pipelines conveying is strong, pressure is big, flow velocity is high, is accordingly also required to using spies such as titanium, zirconiums
The shut-off valve of different material manufacture carries out operation and control.Upper and lower cavity is designed in the valve body of common shut-off valve, medium is under
Chamber flows to epicoele, i.e. " low in and high out ", and flap is then that valve is closed in displacement from the top down, due to medium to the active force of flap and
The direction of displacement of flap is on the contrary, increase the operational torque of needs, and if it is the valve of high-pressure large-caliber, operational torque needs phase
It when big, is especially manually operated very laborious, valve rod, driving device etc. is forced also mutually just can effectively to be operated in requisition for big specification.
Moreover, medium still continues upward the active force of flap after valve is closed, the lower pressure that flap sealing needs, shadow are reduced
The sealing performance of flap is rung.
Invention content：
In view of the deficiencies of the prior art, the utility model provides a kind of special material pressure balancing stop valve reasonable for structure.
The utility model includes the valve body epicoele being located in valve body and valve body cavity of resorption, in the company of valve body epicoele and valve body cavity of resorption
Logical place is equipped with valve seat, and flap is connected on valve rod simultaneously and valve seat corresponding matching, valve body epicoele are the inlet portion of medium, valve body cavity of resorption
The outlet portion of medium, flap be internally provided with can upper and lower displacement secondary lobe, secondary lobe is fixed on valve stem end, valve rod simultaneously and
The bottom of the mobile cooperation of flap limit, flap is equipped with through-hole, and the bottom of secondary lobe and the cooperation of through-hole upper surface constitute sealing pair, flap
Side wall be additionally provided with relief hole, the outer end of relief hole is connected to valve body epicoele, and inner end is led to above through-hole, and it is logical to constitute pressure balance
Road.
The utility model it is reasonable for structure, medium flow direction is " high in and low out " from the top down, medium pair when valve is closed
The active force of flap is identical with the direction of displacement of flap, can significantly reduce operational torque, while increasing under the sealing of flap
Pressure, sealing performance are promoted.In valve opening, secondary lobe first moves up, and opens pressure equalisation passage, reduces pressure difference, then promote flap
It opens easily, even the valve of high-pressure large-caliber is without big operational torque.
The utility model is further illustrated with reference to the accompanying drawings and examples.
Description of the drawings：
Fig. 1 is the main structure schematic diagram of embodiment.
Specific implementation mode：
As shown, valve body epicoele 5 and valve body cavity of resorption 6 are located in valve body 1, in being connected to for valve body epicoele 5 and valve body cavity of resorption 6
Place is equipped with valve seat 3, and flap 2 is connected on valve rod 4 and and 3 corresponding matching of valve seat.Valve body epicoele 5 is the inlet portion of medium, valve body
Cavity of resorption 6 is the outlet portion of medium, flap 2 be internally provided with can upper and lower displacement secondary lobe 7, secondary lobe 7 is fixed on 4 end of valve rod,
Valve rod 4 is simultaneously and the mobile cooperation of the limit of flap 2, the bottom of flap 2 are equipped with through-hole 8, and the bottom and 8 upper surface of through-hole of secondary lobe 7 are matched
It closes and constitutes sealing pair.The side wall of flap 2 is additionally provided with relief hole 9, and the outer end connection valve body epicoele 5 of relief hole 9, through-hole is led in inner end
8 tops, constitute pressure equalisation passage.In the present embodiment, flap 2 and valve seat 3 are that flat seal is engaged, and are made in this way in pressure
It is more reliable with lower sealing.
When valve opening, valve rod 4 first drives secondary lobe 7 to move up together, and secondary lobe 7 and 8 upper surface of through-hole are detached from sealing cooperation, valve
The pressure equalisation passage of through-hole 8 and relief hole 9 composition of valve 2 is opened, and the certain media in valve body epicoele 5 passes through rapidly relief hole
9 and through-hole 8 flow into valve body cavity of resorption 6, upper and lower pressure difference is reduced.Valve rod 4 continues to move up arrival spacing place, and then flap 2 is also driven
It moves up together, flap 2 and valve seat 3 are detached from sealing cooperation, and valve body epicoele 5 is connected to completely with valve body cavity of resorption 6, and medium is unimpeded from valve
It flows through.
When valve is closed, valve rod 4 moves down, and first contacts flap 2 and valve seat 3, then secondary lobe 7 also pushes and 8 upper end of through-hole
Face sealing cooperation, pressure equalisation passage cut-out, under 4 pressure of valve rod and pressure medium collective effect, flap 2 and valve seat 3 are reliable
Sealing, valve body epicoele 5 and the isolation of valve body cavity of resorption, medium flow path completely close.
Claims (2)
- Include valve body epicoele and valve body cavity of resorption in valve body 1. a kind of spy's material pressure balancing stop valve, in valve body epicoele and The connectivity part of valve body cavity of resorption be equipped with valve seat, flap be connected on valve rod and and valve seat corresponding matching, it is characterized in that：Valve body epicoele （5）It is the inlet portion of medium, valve body cavity of resorption（6）It is the outlet portion of medium, in flap（2）Be internally provided with can upper and lower displacement pair Valve（7）, secondary lobe（7）It is fixed on valve rod（4）End, valve rod（4）While and flap（2）The mobile cooperation of limit, flap（2）Bottom Equipped with through-hole（8）, secondary lobe（7）Bottom and through-hole（8）Upper surface cooperation constitutes sealing pair, flap（2）Side wall be additionally provided with and let out Press hole（9）, relief hole（9）Outer end be connected to valve body epicoele（5）, through-hole is led in inner end（8）Top constitutes pressure equalisation passage.
- 2. spy's material pressure balancing stop valve according to claim 1, it is characterized in that：Flap（2）And valve seat（3）It is that plane is close Envelope is engaged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721778262.6U CN207740472U (en) | 2017-12-19 | 2017-12-19 | Special material pressure balancing stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721778262.6U CN207740472U (en) | 2017-12-19 | 2017-12-19 | Special material pressure balancing stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207740472U true CN207740472U (en) | 2018-08-17 |
Family
ID=63118584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721778262.6U Active CN207740472U (en) | 2017-12-19 | 2017-12-19 | Special material pressure balancing stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207740472U (en) |
-
2017
- 2017-12-19 CN CN201721778262.6U patent/CN207740472U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |