CN204164437U - Buffer valve - Google Patents
Buffer valve Download PDFInfo
- Publication number
- CN204164437U CN204164437U CN201420592094.1U CN201420592094U CN204164437U CN 204164437 U CN204164437 U CN 204164437U CN 201420592094 U CN201420592094 U CN 201420592094U CN 204164437 U CN204164437 U CN 204164437U
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- CN
- China
- Prior art keywords
- valve
- sealing surface
- flap
- buffer
- clack sealing
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Abstract
A kind of buffer valve, comprise around the valve seat of medium channel, valve clack sealing surface for opening and closing medium channel relative to valve seat, the flap shaft be connected with valve clack sealing surface and the flap screw wing that is arranged on around valve clack sealing surface, this flap screw wing drives valve clack sealing surface and flap shaft rotated back away from valve seat to open buffer valve under the circulation of liquid medium forward is impacted, and under liquid medium reverse circulated is impacted, drive valve clack sealing surface and flap shaft to rotate to advance close valve seat to close buffer valve.Buffer valve of the present utility model, due to the existence of flap screw wing, fluid can drive flap shaft to rotate, and effectively can cushion the impact force of reverse liquid medium, and the advantage making buffer valve have momentum slowly to diminish, realizes quick closing valve Slow Close.
Description
Technical field
The utility model relates to a kind of safety check, particularly relates to a kind of buffer valve.
Background technique
Existing safety check product category is various, and it is huge that some utilize gravitational potential energy, hydraulic energy, electric energy etc. to realize the slow closing device of the buffer valve of slow closure function, and installing space is limited, and external means is difficult to safeguard in the wild.And this buffer valve is difficult to realize " quick closing valve Slow Close ", when ducted liquid medium occurs to flow backwards, closure of check ring excessive velocities, can cause pressure suddenly to rise destruction pipeline.
Model utility content
For above-mentioned existing problem, the purpose of this utility model is to provide a kind of safer buffer valve.
For reaching above-mentioned technique effect, technical solution adopted in the utility model is: a kind of buffer valve, comprise the valve seat around medium channel, valve clack sealing surface for opening and closing medium channel relative to valve seat, the flap shaft be connected with valve clack sealing surface and the flap screw wing be arranged on around valve clack sealing surface, this flap screw wing drives valve clack sealing surface and flap shaft rotated back away from valve seat to open buffer valve under the circulation of liquid medium forward is impacted, and under liquid medium reverse circulated is impacted, drive valve clack sealing surface and flap shaft to rotate to advance close valve seat to close buffer valve.
Buffer valve of the present utility model, due to the existence of flap screw wing, fluid can drive flap shaft to rotate, and effectively can cushion the impact force of reverse liquid medium, and the advantage making buffer valve have momentum slowly to diminish, realizes quick closing valve Slow Close.
Accompanying drawing explanation
Fig. 1 is the side sectional view of buffer valve of the present utility model.
The enlarged view of the subelement of Fig. 2 buffer valve of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1, buffer valve of the present utility model comprises valve seat 1, valve clack sealing surface 2, flap screw wing 3, guide pins 4 and flap shaft 5.Wherein, flap shaft 5 is fixedly mounted in valve body, and valve clack sealing surface 2 is positioned at the front end of flap shaft 5, makes valve clack sealing surface 2 relative with valve seat 1.Flap shaft 5 can rotate advance or rotated back, so drive valve clack sealing surface 2 near or away from valve seat 1.Flap screw wing 3 is arranged on the outer circumference of valve clack sealing surface 2, and flap screw wing 3 can be driven when liquid medium flows through to rotate, and is flap shaft 5 powered rotation.Valve seat 1 is around the medium channel of buffer valve, and when flap shaft 5 rotates and advances, valve clack sealing surface 2 can near valve seat 1 until fit with valve seat 1, closed dielectric passage.During flap shaft 5 rotated back, medium channel is opened.
Please simultaneously see Fig. 2, flap shaft 5 comprises axis body and is enclosed within the axle sleeve on axis body, and axis body can rotate in axle sleeve.Wherein, axis body offers sphere rail groove a, sphere rail groove a is positioned at axis body approximate mid-section position, extends along axis body perficial helical.Axis body is provided with one section of smooth section at sphere rail groove a away from the side of valve clack sealing surface 2, is connected with sphere rail groove a.Axle sleeve offers 4 cotter ways holding guide pins.Guide pins 4 comprises shank b, spring c and screw d.When axle sleeve is arranged on axis body, shank b is positioned at pin-and-hole, and one end coordinates with sphere rail groove a, make axis body in axle sleeve globally rail groove a track rotate advance or retreat.Spring c is between screw d and shank b, and screw d screws togather and is fixed in cotter way, and spring c is compressed, and two ends support screw d and shank b respectively, and the elastic force of spring c acts on shank b, and shank b is closely cooperated with sphere rail groove a.
When medium forward circulates (see shown by arrow), liquid medium impact through medium channel drives flap screw wing 3 to rotate, guide pins 4 is rail groove a track and flap shaft 5 relative movement globally, the axis body of flap shaft 5 is made to rotate retrogressing in axle sleeve, valve clack sealing surface 2 is away from valve seat 1, because guide pins 4 must globally be advanced by rail groove a, namely valve clack sealing surface 2 mode of rotated back opens medium channel, add stroke, cushion the impact force of liquid medium, buffer valve slow circumvolve is opened.After flap shaft 5 to coordinate with guide pins 4 and terminates, namely guide pins 4 is after globally rail groove a skids off, and support the smooth section of flap shaft 5 axis body, resistance reduces, and flap is opened fast.When medium occurs to flow backwards, medium counter flow acts on flap screw wing 3, flap screw wing 3 counterrotating, valve clack sealing surface 2 moves near valve seat 1, because the axis body of flap shaft 5 has one section of smooth section at sphere rail groove a away from valve clack sealing surface 2 side, make valve clack sealing surface 2 rapidly near valve seat 1, when valve proximity closes close point, guide pins 4 enters sphere rail groove a, forced guide rail pin 4 is along the orbiting motion of sphere rail groove a, rotate Slow Close, on-off action is separated into two stages, realizes quick closing valve Slow Close.
Be appreciated that, flap screw wing 3 is certain inclination angle with the flow direction of liquid medium, two leaves, three leaves or leafy structure can be adopted, (the liquid stream in V direction) flap screw wing 3 rotates under forward liquid medium impacts direction and sphere rail groove a Hand of spiral consistent (sense of rotation as shown in W) can be realized, make valve clack sealing surface 2 can rotated back.
Buffer valve of the present utility model, due to the existence of flap screw wing 3, fluid can drive flap shaft 5 to rotate, flap shaft 5 coordinates with guide pins 4, sphere rail groove a effectively extends movement locus and decisive range, increase contact action power, the advantage making buffer valve have momentum slowly to diminish, realizes quick closing valve Slow Close.The flap screw wing 3 of valve clack sealing surface 2 surrounding, strengthen the ability that flap self rotates, even if flap shaft 5 coordinates resistance larger with guide pins 4, when valve clack sealing surface 2 cannot rotate, flap screw wing 3 produces a rotation torque under the effect of liquid medium, also can make valve clack sealing surface 2 smooth rotation.Flap shaft 5 coordinates with guide pins 4 and contacts as sphere-contact, belongs to motion higher pair and coordinates, have and coordinate the advantages such as area is little, surface friction drag is little, force direction is fixing.And guide pins 5 coordinates with sphere rail groove a, shank b, spring c and screw d are evenly distributed on axis hole, uniform force.Spring c assists shank b, makes guide pins 5 have a suitable variation, can put forward smooth section and coordinate with rail groove face and run, reach the effect rotating and slow down at axle.When the valve clack sealing surface 2 simultaneously rotated is airtight with valve seat 1, the impurity that can adhere to valve seat 1, dirt have a cleaning effect, guarantee the permanent reliable of sealing, use Slow Close stop valve can be suitable for the environment of band granule medium.
The above; for better case study on implementation of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (9)
1. a buffer valve, comprise around the valve seat of medium channel, valve clack sealing surface for opening and closing medium channel relative to valve seat, the flap shaft be connected with valve clack sealing surface and the flap screw wing that is arranged on around valve clack sealing surface, this flap screw wing drives valve clack sealing surface and flap shaft rotated back away from valve seat to open buffer valve under the circulation of liquid medium forward is impacted, and under liquid medium reverse circulated is impacted, drive valve clack sealing surface and flap shaft to rotate to advance close valve seat to close buffer valve.
2. buffer valve according to claim 1, is characterized in that, this flap shaft comprises axis body and is set in the axle sleeve on axis body, and this axis body rotates in this axle sleeve.
3. buffer valve according to claim 2, is characterized in that, axis body offers sphere rail groove, this buffer valve also comprises the guide pins be arranged in axle sleeve, this guide pins end and this sphere rail slot fit.
4. buffer valve according to claim 3, is characterized in that, this axis body is provided with one section of smooth section be connected with sphere rail groove at sphere rail groove away from the side of valve clack sealing surface.
5. buffer valve according to claim 3, is characterized in that, this axle sleeve offers the cotter way holding guide pins.
6. buffer valve according to claim 5, it is characterized in that, this guide pins comprise match with sphere rail groove shank, be fixedly screwed on the screw in cotter way and the spring between shank and screw, this both ends of the spring supports this shank and screw respectively.
7. buffer valve according to claim 3, is characterized in that, this sphere rail groove is along shank spiral extension.
8. buffer valve according to claim 7, is characterized in that, the direction of this sphere rail groove spiral is consistent with the direction that flap screw wing during liquid medium forward flow rotates.
9. buffer valve according to claim 1, is characterized in that, this flap screw wing is trilobed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420592094.1U CN204164437U (en) | 2014-10-14 | 2014-10-14 | Buffer valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420592094.1U CN204164437U (en) | 2014-10-14 | 2014-10-14 | Buffer valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204164437U true CN204164437U (en) | 2015-02-18 |
Family
ID=52538125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420592094.1U Active CN204164437U (en) | 2014-10-14 | 2014-10-14 | Buffer valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204164437U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843826A (en) * | 2018-08-21 | 2018-11-20 | 湖北赛恩斯科技股份有限公司 | A kind of check valve assembly |
| CN109209544A (en) * | 2018-10-26 | 2019-01-15 | 上海中船三井造船柴油机有限公司 | Self-adjusting buffer unit for marine low speed diesel engine exhaust valve |
-
2014
- 2014-10-14 CN CN201420592094.1U patent/CN204164437U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843826A (en) * | 2018-08-21 | 2018-11-20 | 湖北赛恩斯科技股份有限公司 | A kind of check valve assembly |
| CN109209544A (en) * | 2018-10-26 | 2019-01-15 | 上海中船三井造船柴油机有限公司 | Self-adjusting buffer unit for marine low speed diesel engine exhaust valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |