CN207437836U - A kind of air operated reversing valve spool - Google Patents
A kind of air operated reversing valve spool Download PDFInfo
- Publication number
- CN207437836U CN207437836U CN201721506621.2U CN201721506621U CN207437836U CN 207437836 U CN207437836 U CN 207437836U CN 201721506621 U CN201721506621 U CN 201721506621U CN 207437836 U CN207437836 U CN 207437836U
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- China
- Prior art keywords
- spool
- sealing ring
- reversing valve
- air operated
- operated reversing
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Abstract
The utility model is related to a kind of air operated reversing valve spools, have spool part and filler part, wherein in the shaft part section at spool installation sealing ring, a part is straight line, and rest part is circular arc；Filler is partially filled in install in the shaft part groove of sealing ring, is formed using metal spool as matrix, in the integrated valve cored structure of the corresponding position cladding sealing ring of metal spool groove.The utility model solves polytetrafluoro compounded mix sealing ring installation difficulty, improves the use pressure of air operated reversing valve, improves the seal durability and voltage endurance capability of reversal valve.
Description
Technical field
The utility model is related to a kind of air operated reversing valve spools applied in air operated reversing valve.
Background technology
At present, the structure of soft seal air-powered electromagnetic/hand-operated direction valve (as shown in Figure 1) spool that most of producers provide is such as
Shown in Fig. 2A, 2B, to slot on spool, O-ring seal is then loaded onto, spool moves in valve body, realizes cutting for valve channel
Change function.Structure shown in Fig. 2A, 2B is the soft sealing valve core that most of producers make, and installs the shaft part cross sectional shape at sealing ring
For circle.Drawback that there are two this structures, first, when the pressure of compressed air in valve body is more than 7.5bar, interposition on spool
Four sealing rings put in the motion process of spool due to compressed air generate aerodynamic force be easy to deviate from out of slot, once
It is disengaged from the groove there are one sealing ring, this valve cannot work again.Second, deviate to solve this four sealing rings out of slot, many factories
Family reduces such sealing ring inner surface diameter as far as possible, but the stretching for causing sealing ring excessive during assembling causes to reduce
The service life of sealing ring, due to it is undue be stretching in assembling process some sealing rings are drawn it is bad so that sealing ring sealing is lost
Effect.Producer also uses pressure to improve, and the O-ring of sealing is changed into polytetrafluoro compounded mix sealing ring (see Fig. 3),
The benefit of such sealing ring be exempt from lubrication and wearability it is good, pressure-resistant reachable more than 2Mpa, shortcoming is that the sealing ring hardness is big, deform
Energy force difference, is not easy to install very much, is installed after softening according to hot water/deep fat, not of uniform size after cooling, is unfavorable for sealing.
Existing many equipment have solved the problems, such as dynamic sealing using polytetrafluoro compounded mix sealing ring, such as cylinder
Piston and piston rod packing, the high pressure section sealing of reciprocating compressor.And change-over valve core is not easy to use, because spool
It is small, and this sealing ring has the characteristics of really up to the mark, deformation and recovery capability are poor when relatively small, so being not easy to install.
Utility model content
There is the deficiencies of really up to the mark, deformation and recovery capability are poor for the sealing ring of air operated reversing valve spool in the prior art, this
Utility model will solve the problems, such as to be to provide a kind of air operated reversing valve spool.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
The utility model has spool part and filler part, wherein in the shaft part section at spool installation sealing ring, one
Part is straight line, and rest part is circular arc；Filler is partially filled in install in the shaft part groove of sealing ring, is formed with metal
Spool is matrix, in the integrated valve cored structure of the corresponding position cladding sealing ring of metal spool groove.
The part is straight line, and rest part is that circular arc is：Shaft part section is arch, i.e. only one section of straight line, remaining
Part is circular arc.
Alternatively, the part is straight line, rest part is that circular arc is：A shaft part section part is with the two of axisymmetrical
A parallel straight line, rest part are the circular arc being oppositely arranged.
Alternatively, the part is straight line, rest part is that circular arc is：Shaft part section is quadrangle.
Alternatively, the part is straight line, rest part is that circular arc is：Shaft part section is triangle.
Filler part uses polytetrafluoro compounded mix.
The utility model has the advantages that and advantage：
1. the utility model solves polytetrafluoro compounded mix sealing ring installation difficulty, making for air operated reversing valve is improved
Use pressure.
2. the utility model improves the seal durability and voltage endurance capability of reversal valve.
Description of the drawings
Fig. 1 is soft seal air-powered electromagnetic/hand-operated direction valve structure schematic diagram in the prior art；
Fig. 2A is soft seal air-powered electromagnetic/hand-operated direction valve valve core structure schematic diagram in the prior art；
Fig. 2 B are the axial section of Fig. 2A.
Fig. 3 is polytetrafluoro compounded mix sealing ring schematic diagram in the prior art；
Fig. 4 A are the utility model change-over valve core structure diagram；
Fig. 4 B are that A-A directional profiles illustrate in Fig. 4 A；
Fig. 5 A are polytetrafluoro compounded mix and the structure diagram after metal spool integral coating in the utility model；
Fig. 5 B are the axial section of Fig. 5 A；
Fig. 6 is the finished product structure schematic diagram of the utility model change-over valve core.
Wherein, 1 is spool, and 2 be polytetrafluoro compounded mix.
Specific embodiment
The utility model is further elaborated with reference to Figure of description.
As shown in fig. 6, a kind of air operated reversing valve of the utility model, there is spool part and filler part, wherein pacifying in spool
It fills in the shaft part section at sealing ring, a part is straight line, and rest part is circular arc；Filler is partially filled in install sealing
It in the shaft part groove of circle, is formed using metal spool as matrix, in the entirety of the corresponding position cladding sealing ring of metal spool groove
Formula valve core structure.Filler part uses polytetrafluoro compounded mix.
The valve core structure of air operated reversing valve is mainly made of metal spool and nonmetallic sealing ring two large divisions, wherein non-gold
It is a kind of semi-finished product processing sealing ring to belong to sealing ring, and material is polytetrafluoro compounded mix.Metal spool in the utility model
It is that the shaft part that common finished product change-over valve core is installed at sealing ring is done into working process, the cross sectional shape before shaft part processing is circle
Shape in order to avoid polytetrafluoro compounded mix generates relative motion with the shaft part in final finished product process, processes shaft part
When, shaft part section can be arch, i.e., only one section of straight line, rest part are circular arc；Or a shaft part section part is with axis
Symmetrical two parallel straight lines, rest part are the circular arc being oppositely arranged；Or shaft part section is quadrangle；Or shaft part is cut
Face is triangle.
In short, to have crest line in shaft part, polytetrafluoro compounded mix and the shaft part is made not to generate relative motion, can be used
State any structure, quadrangle can be square, rectangle or irregular quadrilateral or triangle, pentagon etc., this
It is using two parallel straight lines of axisymmetrical, rest part as the circular arc that is oppositely arranged that embodiment, which uses a shaft part section part,
Form.
As shown in Fig. 4 A, 4B, obtained after the shaft part that common finished product change-over valve core is installed at sealing ring is done working process
Semi-finished product spool (not installing state during polytetrafluoro packing seal circle), the shaft part at sealing ring is installed on cylindrical basis
On to process two symmetrical planes namely shaft part section be with two parallel straight lines of axisymmetrical, rest part is phase
To the circular arc of setting.
Metal spool after processing carries out a series of special process processing together with polytetrafluoro compounded mix, and polytetrafluoro is compound
Filler is coated on matrix spool, forms the monolithic construction of polytetrafluoro compounded mix and metal spool, such as Fig. 5 A, 5B institute
Show.By in addition to corresponding polytetrafluoro compounded mix at metal spool groove, the filler of rest part is all processed in said structure
It disposes, ultimately forms using metal spool as matrix, in the corresponding position cladding polytetrafluoro sealing ring of metal spool groove
Integrated valve cored structure, as shown in Figure 6.
The utility model melts polytetrafluoro compounded mix or other materials airtight and watertight padding with change-over valve core through special process
After being combined together, formed through secondary operation without the spool of assembling and sealing element integral structure.The structure is applied to pneumatically change
Into valve, it can be ensured that reversal valve long-term stable operation under high pressure operating mode.
Compared with existing air operated reversing valve seal spool, the utility model improve reversal valve seal durability and
Voltage endurance capability.
Claims (6)
1. a kind of air operated reversing valve spool, it is characterised in that：With spool part and filler part, wherein spool installation sealing ring
In the shaft part section at place, a part is straight line, and rest part is circular arc；Filler is partially filled in install the shaft part of sealing ring
It in groove, is formed using metal spool as matrix, in the integral type valve core knot of the corresponding position cladding sealing ring of metal spool groove
Structure.
2. by air operated reversing valve spool described in claim 1, it is characterised in that the part is straight line, and rest part is circle
Arc is：Shaft part section is arch, i.e., only one section of straight line, rest part are circular arc.
3. by air operated reversing valve spool described in claim 1, it is characterised in that the part is straight line, and rest part is circle
Arc is：A shaft part section part is with two parallel straight lines of axisymmetrical, and rest part is the circular arc being oppositely arranged.
4. by air operated reversing valve spool described in claim 1, it is characterised in that the part is straight line, and rest part is circle
Arc is：Shaft part section is quadrangle.
5. by air operated reversing valve spool described in claim 1, it is characterised in that the part is straight line, and rest part is circle
Arc is：Shaft part section is triangle.
6. by air operated reversing valve spool described in claim 1, it is characterised in that：Filler part uses polytetrafluoro compounded mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721506621.2U CN207437836U (en) | 2017-11-13 | 2017-11-13 | A kind of air operated reversing valve spool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721506621.2U CN207437836U (en) | 2017-11-13 | 2017-11-13 | A kind of air operated reversing valve spool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437836U true CN207437836U (en) | 2018-06-01 |
Family
ID=62289009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721506621.2U Active CN207437836U (en) | 2017-11-13 | 2017-11-13 | A kind of air operated reversing valve spool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437836U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183561A (en) * | 2021-11-30 | 2022-03-15 | 北京卫星制造厂有限公司 | Valve core of reversing valve and electromagnetic reversing valve comprising same |
-
2017
- 2017-11-13 CN CN201721506621.2U patent/CN207437836U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183561A (en) * | 2021-11-30 | 2022-03-15 | 北京卫星制造厂有限公司 | Valve core of reversing valve and electromagnetic reversing valve comprising same |
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