CN203906824U - Circular arc-shaped pneumatic switch valve - Google Patents
Circular arc-shaped pneumatic switch valve Download PDFInfo
- Publication number
- CN203906824U CN203906824U CN201420303144.XU CN201420303144U CN203906824U CN 203906824 U CN203906824 U CN 203906824U CN 201420303144 U CN201420303144 U CN 201420303144U CN 203906824 U CN203906824 U CN 203906824U
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- CN
- China
- Prior art keywords
- circular arc
- valve
- spool
- valve element
- cylinder block
- 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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Abstract
The utility model discloses a circular arc-shaped pneumatic switch valve which comprises an air cylinder body, a piston arranged in the air cylinder body and a switch valve body arranged above the air cylinder body. A ball-shaped valve element is arranged at the upper end of a piston rod connected with the piston, a heat-resistant rubber sealing layer is wrapped on the surface of the valve element, and the switch valve body is provided with a circular arc wall in sealing match with the valve element. According to the circular arc-shaped pneumatic switch valve, the circular arc-shaped valve element is adopted, the wall matched with the valve element is also in a circular arc shape, and therefore, the contact area of the valve element and the circular arc-shaped wall is increased. Accordingly, the circular arc-shaped pneumatic switch valve overcomes deflects that the contact area of a sealing ring of a sealing ring type valve element and the wall of the sealing ring in the prior art is small, and air leakage occurs when the air cylinder body expands with cold and contracts with heat or other fine deformation happens.
Description
Technical field
The utility model relates to flow-control equipment technical field, particularly a kind of circular arc pneumatic on-off valve.
Background technique
The ball valve of the enable switch valve of prior art is a truncated conical shape, round platform extension is provided with a seal ring, be used for coordinating cylinder block to play the effect of sealing, due to seal ring and valve body surface area of contact limited, therefore the ball valve sealing effect of this switch valve is not very desirable, run into cylinder block pyrocondensation cold expanding or have trickle distortion, seal ring cannot contact with cylinder block well, causes gas leak phenomenon to occur.
Model utility content
(1) technical problem that will solve
The purpose of this utility model will overcome above-mentioned shortcoming exactly, aims to provide a kind of circular arc pneumatic on-off valve.
(2) technological scheme
For achieving the above object, circular arc pneumatic on-off valve of the present utility model, comprise cylinder block and be located at the piston in cylinder block, and the switching valve body that is located at cylinder block top, the piston rod upper end being connected with piston is provided with spool, described spool is spherical shape, and described spool face wraps up heat-resisting rubber sealant, and described switching valve body is provided with the circular arc wall coordinating with seal spool.
Further, described spool radian at least 200 degree.
Further, in described cylinder block, edge is provided with the inclined-plane coordinating with spool.
Further, described switching valve body comprises the bottom inlet end being located at by valve element position place, and the outlet end that is arranged on valve body top.
Further, described cylinder block bottom is provided with lower circulation gas port, and its side is provided with side circulation gas port.
Further, described piston rod and cylinder block are tightly connected.
(3) beneficial effect
Compared with prior art, the technical solution of the utility model has the following advantages: adopt the spool of circular arc and the circular arc wall of fitting with spool cambered surface, increased the area of contact of spool and wall, better play seal action.
Accompanying drawing explanation
Fig. 1 is circular arc pneumatic on-off valve sectional view of the present utility model;
Fig. 2 is the valve core structure schematic diagram of the utility model circular arc pneumatic on-off valve;
Fig. 3 is Figure 1A portion enlarged view.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1 to Figure 3, circular arc pneumatic on-off valve of the present utility model, comprise cylinder block 1 and be located at the piston 2 in cylinder block 1, and the switching valve body 3 that is located at cylinder block 1 top, piston rod 4 upper ends that are connected with piston 2 are provided with spool 5, described spool 5 is spherical shape, the heat-resisting rubber sealant 6 of described spool 5 surface parcel, and described switching valve body 3 is provided with the circular arc wall 7 being sealed and matched with spool 5.
Described spool 5 radians are α, these radian at least 200 degree, and such design is convenient closely wraps spool by sealing layer.
In described cylinder block 1, edge is provided with the inclined-plane 8 coordinating with spool 5, the easy wiper seals layer of vertical surface, thus shorten the spool life-span.
Described switching valve body 3 comprises the bottom inlet end 9 being located at by spool 5 positions, and the outlet end 10 that is arranged on valve body top.
Described cylinder block 1 bottom is provided with lower circulation gas port 11, and its side is provided with side circulation gas port 12.
Described piston 2 bars and cylinder block 1 are tightly connected.
When the utility model is used, lower circulation gas port is applied to malleation or negative pressure, thereby promote piston rod, move up and down, while moving up to top, the spherical valve core circular arc wall of can fitting well.
Circular arc pneumatic on-off valve of the present utility model adopts the spool of circular arc, the wall being mated is also circular arc, therefore increased the area of contact of spool and circular arc wall, overcome its seal ring of the ring-like spool of sealing of prior art and the area of contact of wall is little, run into cylinder block pyrocondensation cold expanding or have the easily defect of gas leakage of trickle distortion.
In sum, above-mentioned mode of execution is not restricted mode of execution of the present utility model, and the modification that all those skilled in the art carry out on the basis of flesh and blood of the present utility model or equivalent deformation, all at technology category of the present utility model.
Claims (6)
1. a circular arc pneumatic on-off valve, comprise cylinder block (1) and be located at the piston (2) in cylinder block (1), and the switching valve body (3) that is located at cylinder block (1) top, it is characterized in that: piston rod (4) upper end being connected with piston (2) is provided with spool (5), described spool (5) is spherical shape, the heat-resisting rubber sealant (6) of described spool (5) surface parcel, described switching valve body (3) is provided with the circular arc wall (7) being sealed and matched with spool (5).
2. circular arc pneumatic on-off valve as claimed in claim 1, is characterized in that: described spool (5) radian at least 200 degree.
3. circular arc pneumatic on-off valve as claimed in claim 2, is characterized in that: described cylinder block (1) is upper along being provided with the inclined-plane (8) coordinating with spool (5).
4. circular arc pneumatic on-off valve as claimed in claim 3, is characterized in that: described switching valve body (3) comprises the bottom inlet end (9) being located at by spool (5) position, and the outlet end (10) that is arranged on valve body top.
5. circular arc pneumatic on-off valve as claimed in claim 4, is characterized in that: described cylinder block (1) bottom is provided with lower circulation gas port (11), and its side is provided with side circulation gas port (12).
6. circular arc pneumatic on-off valve as claimed in claim 5, is characterized in that: described piston (2) bar and cylinder block (1) are tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420303144.XU CN203906824U (en) | 2014-06-09 | 2014-06-09 | Circular arc-shaped pneumatic switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420303144.XU CN203906824U (en) | 2014-06-09 | 2014-06-09 | Circular arc-shaped pneumatic switch valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203906824U true CN203906824U (en) | 2014-10-29 |
Family
ID=51781105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420303144.XU Expired - Fee Related CN203906824U (en) | 2014-06-09 | 2014-06-09 | Circular arc-shaped pneumatic switch valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203906824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591044A (en) * | 2018-07-17 | 2018-09-28 | 浙江绿美泵业有限公司 | Testing water pump platform |
| CN108626409A (en) * | 2017-03-17 | 2018-10-09 | 双恒阀门集团有限公司 | A kind of emergency isolation valve |
-
2014
- 2014-06-09 CN CN201420303144.XU patent/CN203906824U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626409A (en) * | 2017-03-17 | 2018-10-09 | 双恒阀门集团有限公司 | A kind of emergency isolation valve |
| CN108591044A (en) * | 2018-07-17 | 2018-09-28 | 浙江绿美泵业有限公司 | Testing water pump platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20150609 |
|
| EXPY | Termination of patent right or utility model |