CN206206718U - Suitable for the constant-pressure check valve of worst hot case - Google Patents
Suitable for the constant-pressure check valve of worst hot case Download PDFInfo
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- CN206206718U CN206206718U CN201621193610.9U CN201621193610U CN206206718U CN 206206718 U CN206206718 U CN 206206718U CN 201621193610 U CN201621193610 U CN 201621193610U CN 206206718 U CN206206718 U CN 206206718U
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Abstract
The utility model is related to a kind of constant-pressure check valve suitable for worst hot case, it is made up of valve body and valve element, runner and seal spool hole are provided with valve body, runner is provided with influent stream side and goes out to flow side with respect to seal spool hole, valve body is provided with pressure chamber positioned at valve element with respect to the opposite side in seal spool hole, piston and pressure-controling spring are provided with the pressure chamber, piston one end sliding is arranged in pressure chamber, the other end is set with valve spool, pressure chamber is provided with the installing port stretched out for piston towards seal spool hole, also include bellows, bellows-sheathed is located at the part on the outside of pressure chamber located at piston, the end of piston and valve spool is fixed in bellows one end, the other end is fixed on valve body, the bearing of bellows and valve body is positioned at the end face where installing port.Using such scheme, the utility model provides a kind of constant-pressure check valve suitable for worst hot case for strengthening pressure chamber sealing.
Description
Technical field
The utility model is related to a kind of valve, and in particular to a kind of constant-pressure check valve.
Background technology
Constant-pressure check valve is mainly installed on medium delivery pipe road or the medium delivery pipe road for special operation condition, to prevent
The backflow of fluid or special media, and can be automatically turned under the pressure in setting.
Existing constant-pressure check valve is made up of valve body and valve element, and runner and seal spool hole, runner phase are provided with valve body
Influent stream side is provided with to seal spool hole and goes out to flow side, runner is cut off when valve element coordinates with seal spool hole in sealing, valve body
The opposite side in seal spool hole is provided with pressure chamber positioned at valve element, piston and pressure-controling spring are provided with the pressure chamber, should
The sliding of piston one end is arranged in pressure chamber, and the other end is set with valve spool, and pressure-controling spring is compressed in piston and pressure chamber walls
Between and by valve element to seal spool hole reset, the constant pressure turn on of valve is realized by the size for adjusting initial tension of spring, in order to
Enable piston and valve spool, pressure chamber that the installing port stretched out for piston is provided with towards valve element, yet with piston and pressure
It is close at the movable sealing after long-time use movable sealing and to be limited to by O-ring non-refractory between power chamber
Envelope property is gradually reduced, and causes runner to be revealed to the medium of pressure chamber.
The content of the invention
In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of enhancing pressure chamber sealing
Suitable for the constant-pressure check valve of worst hot case.
To achieve the above object, the utility model provides following technical scheme：It is made up of valve body and valve element, described valve
Runner and seal spool hole are provided with vivo, described runner is provided with influent stream side and goes out and flows side with respect to seal spool hole, described
Valve element and seal spool hole when coordinating in sealing runner be cut off, it is another with respect to seal spool hole that described valve body is located at valve element
Side is provided with pressure chamber, and piston and pressure-controling spring are provided with the pressure chamber, and piston one end sliding is arranged in pressure chamber,
The other end is set with valve spool, and described pressure chamber is provided with the installing port stretched out for piston towards seal spool hole, and it is special
Levy and be：Also include bellows, described bellows-sheathed is located at the part that piston is located on the outside of pressure chamber, described bellows one
The end of piston and valve spool is fixed at end, and the other end is fixed on valve body, and described bellows is located at the bearing of valve body
End face where installing port.
By using above-mentioned technical proposal, bellows is set up, bellows has flexible function, due to a part of position of piston
In outside pressure chamber, bellows can give its function that auxiliary is oriented to, and on the other hand, bellows is coated on piston outer periphery face, even if
After long-time use, still with preferable sealing, the installation position of pressure chamber can be located at valve body and may be alternatively located at bonnet.
The utility model is further arranged to：Described valve body is provided with positioned at the end face where installing port and supplies bellows-sheathed
The mounting ring for entering.
By using above-mentioned technical proposal, setting up mounting ring increases the installation strength and contraposition accuracy of bellows, it is to avoid its
Position skew is produced after installation or use.
The utility model is further arranged to：Described piston is circumferentially arranged with the outer peripheral face of the end of valve spool to be had
The limited block of piston moving range is limited, described bellows is fixedly installed on limited block.
By using above-mentioned technical proposal, rationally by the use of existing limited block as the installation position of bellows, increase ripple
Pipe and valve element between fixed-area while there is multiaspect to fix.
The utility model is further arranged to：Described bellows is made up of metal material.
By using above-mentioned technical proposal, using metal material, make bellows that there is more preferable resistance to elevated temperatures, Neng Goushi
For more operating modes.
The utility model is further arranged to：By being welded and fixed between described bellows and piston and valve body.
By using above-mentioned technical proposal, according to the metallic character of bellows, it is fixed with preferable using welding
Fixing intensity, and increase the service life.
The utility model is further arranged to：Described piston is provided with check cavity towards valve element, and described valve element is set
Have the non-return block for stretching into check cavity and being slid along check cavity, be provided with described piston say check cavity and Chu Liu sides UNICOM only
Return passage.
By using above-mentioned technical proposal, set up check cavity, go out to flow side occur medium refluence situation when, medium can flow
Enter check cavity through non-return passage, the certain media extrudes non-return block away from piston, that is, promote valve element to be moved to seal spool hole
Until sealing, makes valve body have the function of non-return, when the pressure medium of backflow is bigger, the sealing of non-return is better.
The utility model is further arranged to：Described pressure chamber respectively with the influent stream side of valve body and go out to flow side be provided with into
Circulation road and go out circulation road, described goes out on circulation road the relief valve for being provided with and controlling out circulation road break-make.
By using above-mentioned technical proposal, simplify pressure-controling spring function, make it that there is pretension function, it is to avoid Opening pressure
It is too high, cause pressure-controling spring oversized, during work, the medium of influent stream side enters pressure chamber by entering circulation road, in pressure chamber
Pressure promote valve element and seal spool hole to seal, when influent stream side pressure medium higher than setting pressure value when, relief valve is opened
Open, pressure chamber medium drained into out stream side by going out circulation road, valve element under the pressure medium effect of influent stream side with seal spool
Hole departs from so that go out to flow side and influent stream side UNICOM, if the pressure of medium influent stream side is less than the pressure of setting, relief valve is closed,
The pressure rise of pressure chamber, under the pressure medium of pressure chamber and the collective effect of pressure-controling spring, valve element is close with seal spool hole
Envelope, runner cut-out.
The utility model is further described with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model specific embodiment.
Specific embodiment
As shown in figure 1, the utility model discloses a kind of constant-pressure check valve suitable for worst hot case, by valve body 1 and valve
Core 2 is constituted, and runner and seal spool hole 3 are provided with valve body 1, and runner is provided with influent stream side 11 and goes out with respect to seal spool hole 3
Stream side 12, runner is cut off when valve element 2 coordinates with seal spool hole 3 in sealing, and valve body 1 is located at valve element 2 with respect to seal spool hole 3
Opposite side be provided with pressure chamber 13, is provided with piston 4 and pressure-controling spring 5 in the pressure chamber 13, the one end of piston 4 sliding is set
In in pressure chamber 13, the other end links with valve element 2 and sets, and pressure chamber 13 is provided with what is stretched out for piston 4 towards seal spool hole 3
Installing port 131, also including bellows 6, bellows 6 is sheathed on part of the piston 4 positioned at the outside of pressure chamber 13, the one end of bellows 6
The end of piston 4 and the linkage of valve element 2 is fixed on, the other end is fixed on valve body 1, and bellows 6 is located at the bearing of valve body 1 and installs
End face where mouth 131, sets up bellows 6, and bellows 6 has flexible function, because the part of piston 4 is positioned at pressure chamber 13
Outward, bellows 6 can give its function that auxiliary is oriented to, and on the other hand, bellows 6 is coated on the outer peripheral face of piston 4, even if when long
Between after use, still with preferable sealing, the installation position of pressure chamber 13 can be located at valve body 1 and may be alternatively located at bonnet.
End face where valve body 1 is located at installing port 131 is provided with the mounting ring 135 being inserted in for bellows, sets up mounting ring
135 installation strengths for increasing bellows and contraposition accuracy, it is to avoid position skew is produced after its installation or use.
The limited block 43 of the circumferentially arranged restricted piston moving range of outer peripheral face of the end that piston 4 links with valve element 2,
Bellows 6 is fixedly installed on limited block 43, rationally by the use of existing limited block 43 as the installation position of bellows 6, increases ripple
While fixed-area between line pipe 6 and valve element 4 there is multiaspect to fix.
Bellows 6 is made up of metal material, using metal material, bellows 6 is had more preferable resistance to elevated temperatures, can
Suitable for more operating modes.
By being welded and fixed between bellows 6 and piston 4 and valve body 1, according to the metallic character of bellows 6, using welding
It is fixed with preferable fixing intensity, and increases the service life.
Piston 4 is provided with check cavity 41 towards valve element 2, and valve element 2 is provided with and stretches into check cavity 41 and slid along check cavity 41
Non-return block 21, the non-return passage 42 for saying check cavity 41 and the UNICOMs of Chu Liuce 12 is provided with piston 4, set up check cavity 41,
Go out to flow side 12 occur medium refluence situation when, medium can flow through non-return passage 42 enter check cavity 41, the certain media extruding
Non-return block 21 promotes valve element 2 to be moved to seal spool hole 3 until sealing away from piston 4, valve body 1 is had the function of non-return,
When the pressure medium of backflow is bigger, the sealing of non-return is better.
Pressure chamber 13 respectively with the influent stream side 11 of valve body 1 and go out to flow side 12 and be provided with into circulation road 132 and go out circulation road
133, go out on circulation road 133 relief valve 134 for being provided with and controlling out the break-make of circulation road 133, simplify the function of pressure-controling spring 5, make it
Only there is pretension function, it is to avoid Opening pressure is too high, causes pressure-controling spring 5 oversized, during work, the medium of influent stream side 11 leads to
Cross into circulation road 132 and enter pressure chamber 13, the pressure in pressure chamber 13 promotes valve element 2 to be sealed with seal spool hole 3, when influent stream side
When 11 pressure medium is higher than the pressure value for setting, relief valve 134 is opened, and is arranged the medium of pressure chamber 13 by going out circulation road 133
To going out to flow side 12, valve element 2 departs under the pressure medium effect of influent stream side 11 with seal spool hole 3 so that goes out to flow side 12 and enters
The UNICOMs of Liu Ce 11, if the pressure of medium influent stream side 11 is less than the pressure of setting, relief valve 134 is closed, the pressure of pressure chamber 13
Raise, under the pressure medium of pressure chamber 13 and the collective effect of pressure-controling spring 5, valve element 2 is sealed with seal spool hole 3, runner
Cut-out.
Claims (7)
1. a kind of constant-pressure check valve suitable for worst hot case, is made up of valve body and valve element, and runner is provided with described valve body
And seal spool hole, described runner is provided with influent stream side and goes out and flow side with respect to seal spool hole, and described valve element is close with valve element
Runner is cut off when sealing of hole coordinates in sealing, and described valve body is provided with pressure positioned at valve element with respect to the opposite side in seal spool hole
Chamber, is provided with piston and pressure-controling spring in the pressure chamber, piston one end sliding is arranged in pressure chamber, and the other end joins with valve element
Dynamic to set, described pressure-controling spring is compressed between piston and pressure chamber and valve element resets to seal spool hole, described pressure
Power chamber is provided with the installing port stretched out for piston towards seal spool hole, it is characterised in that：Also include bellows, described ripple
Pipe sleeve is located at the part on the outside of pressure chamber located at piston, and the end of piston and valve spool is fixed in described bellows one end,
The other end is fixed on valve body, and described bellows and the bearing of valve body are positioned at the end face where installing port.
2. the constant-pressure check valve suitable for worst hot case according to claim 1, it is characterised in that：Described valve body is located at
End face where installing port is provided with the mounting ring being inserted in for bellows.
3. the constant-pressure check valve suitable for worst hot case according to claim 1, it is characterised in that：Described piston and valve
The limited block of the circumferentially arranged restricted piston moving range of outer peripheral face of the end of core linkage, described bellows is fixedly installed
In on limited block.
4. the constant-pressure check valve suitable for worst hot case according to claim 1, it is characterised in that：Described bellows by
Metal material is made.
5. the constant-pressure check valve suitable for worst hot case according to claim 2, it is characterised in that：Described bellows with
By being welded and fixed between piston and valve body.
6. the constant-pressure check valve suitable for worst hot case according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that：Institute
The piston stated is provided with check cavity towards valve element, and described valve element is provided with the non-return for stretching into check cavity and being slid along check cavity
Block, is provided with the non-return passage for saying check cavity and Chu Liu sides UNICOM on described piston.
7. the constant-pressure check valve suitable for worst hot case according to claim 1 or 2 or 3 or 4 or 5, it is characterised in that：Institute
The pressure chamber stated respectively with the influent stream side of valve body and go out to flow side and be provided with into circulation road and go out circulation road, described enters on circulation road
It is provided with the control valve controlled into circulation road break-make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621193610.9U CN206206718U (en) | 2016-10-28 | 2016-10-28 | Suitable for the constant-pressure check valve of worst hot case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621193610.9U CN206206718U (en) | 2016-10-28 | 2016-10-28 | Suitable for the constant-pressure check valve of worst hot case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206718U true CN206206718U (en) | 2017-05-31 |
Family
ID=58752871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621193610.9U Active CN206206718U (en) | 2016-10-28 | 2016-10-28 | Suitable for the constant-pressure check valve of worst hot case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110224A (en) * | 2021-12-07 | 2022-03-01 | 湖南省力宇燃气动力有限公司 | Explosion-proof valve and explosion-proof device |
| RU213807U1 (en) * | 2022-07-05 | 2022-09-29 | Антон Валерьевич Селютин | Stop valve |
-
2016
- 2016-10-28 CN CN201621193610.9U patent/CN206206718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110224A (en) * | 2021-12-07 | 2022-03-01 | 湖南省力宇燃气动力有限公司 | Explosion-proof valve and explosion-proof device |
| RU213807U1 (en) * | 2022-07-05 | 2022-09-29 | Антон Валерьевич Селютин | Stop valve |
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