CN211715885U - Straight stroke actuating mechanism with air inlet structure - Google Patents
Straight stroke actuating mechanism with air inlet structure Download PDFInfo
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- CN211715885U CN211715885U CN201922022285.XU CN201922022285U CN211715885U CN 211715885 U CN211715885 U CN 211715885U CN 201922022285 U CN201922022285 U CN 201922022285U CN 211715885 U CN211715885 U CN 211715885U
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- piston cylinder
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- air intake
- valve
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Abstract
The utility model belongs to the technical field of the mechanical skill and specifically relates to a straight stroke actuating mechanism with air intake structure, including the piston cylinder, air intake structure, the bottom of piston cylinder is equipped with the cylinder cap, is equipped with air intake structure on the lateral wall of cylinder cap, and the one end of the inside cavity of air intake structure is equipped with the gas port, and inside the other end of the inside cavity of air intake structure extended to the piston cylinder, was equipped with the floater in the inside cavity of air intake structure, and the cylinder body bottom of piston cylinder was provided with piston cylinder business turn over gas port, is equipped with the piston in the piston cylinder, and the bottom of piston is equipped with extending. Compared with the prior art, the utility model, through the exhaust of extension structure control piston cylinder to slow down the velocity of motion of piston, reach the sealed face of protection valve and valve shaft. The utility model discloses greatly reduced the possibility that valve case and disk seat strike production spark fast to make oxygen regulating valve can adopt hard seal structure, increased the life of valve.
Description
Technical Field
The utility model belongs to the technical field of the mechanical skill and specifically relates to a straight stroke actuating mechanism with air inlet structure.
Background
During the use process of the pneumatic spring return straight stroke actuating mechanism, the fact that the shaft is bent and deformed due to the rapid movement of the spring in the return process is often found, and the cover is deformed due to high-speed impact. In addition, in the oxygen valve operating mode, because high-speed impact produces the spark and can lead to the valve to explode, the spark that metal striking produced is avoided to the soft seal structure of original oxygen valve operating mode majority adoption, and soft seal structure has the shortcoming that life is short.
Therefore, it is necessary to design a straight stroke actuator with an air inlet structure, which can avoid deformation of the valve sealing surface and the valve shaft during the spring return process, and increase the service life of the valve.
Disclosure of Invention
The utility model aims at overcoming the not enough of prior art, provide a straight stroke actuating mechanism with inlet structure, can avoid valve seal face and valve shaft to warp at the spring reset in-process, increase the life of valve simultaneously.
In order to achieve the above object, the utility model relates to a straight stroke actuating mechanism with air inlet structure, including piston cylinder, air inlet structure, its characterized in that: the bottom of piston cylinder is equipped with the cylinder cap, is equipped with air inlet structure on the lateral wall of cylinder cap, and the one end of the inside cavity of air inlet structure is equipped with the gas port, and inside the other end of the inside cavity of air inlet structure extended to the piston cylinder, was equipped with the floater in the inside cavity of air inlet structure, and the cylinder body bottom of piston cylinder is provided with piston cylinder business turn over gas port, is equipped with the piston in the piston cylinder, and the bottom of piston is equipped with extension structure, is equipped with the spring between.
The extension structure shields the air inlet and outlet of the piston cylinder or is separated from the air inlet and outlet of the piston cylinder.
The floating ball shields the air port or is separated from the air port.
Compared with the prior art, the utility model, designed the straight stroke actuating mechanism who has inlet structure, set up piston cylinder business turn over gas port bottom the piston cylinder to increased the extension structure on the piston, through the exhaust of extension structure control piston cylinder, thereby slowed down the velocity of motion of piston, reached the sealed face of protection valve and valve shaft. The utility model discloses an inlet structure, the exhaust velocity of admitting air of control piston cylinder avoids the valve fast switch, has greatly reduced the possibility that valve case and disk seat strike the production spark fast to make oxygen regulating valve can adopt hard seal structure, increased the life of valve.
Drawings
Fig. 1 is a structural diagram of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
Referring to fig. 1, the utility model relates to a straight stroke actuating mechanism with air intake structure, including the piston cylinder, air intake structure, the bottom of piston cylinder 1 is equipped with cylinder cap 11, be equipped with air intake structure 2 on the lateral wall of cylinder cap 11, the one end of the inside cavity of air intake structure 2 is equipped with the gas port, the other end of the inside cavity of air intake structure 2 extends to inside the piston cylinder 1, be equipped with floater 21 in the inside cavity of air intake structure 2, the cylinder body bottom of piston cylinder 1 is provided with piston cylinder business turn over gas port 12, be equipped with piston 13 in the piston cylinder 1, the bottom of piston 13 is equipped with extending structure 14, be equipped with spring 15 between the top of piston 13.
The utility model discloses set up piston cylinder business turn over gas port 12 in 1 bottom of piston cylinder to increased extension structure 14 on piston 13, extension structure 14 shelters from piston cylinder business turn over gas port 12 or with the separation of piston cylinder business turn over gas port 12. The utility model discloses be equipped with inlet structure 2 on the lateral wall of cylinder cap 11, be equipped with floater 21 in the 2 inside cavitys of inlet structure, floater 21 shelters from the gas port or separates with the gas port.
The utility model discloses at the during operation, piston cylinder 1 loses gas, and spring 15 restores to the throne and kick-backs, promotes the motion of piston 13, compresses the gas in the piston cylinder 1. At this point, the extension 14 is separated from the cylinder port 12 and compressed gas is expelled from the cylinder port 12. When the piston cylinder 1 exhausts, under the pushing of gas, the floating ball 21 moves to the gas port and shields the gas port of the gas inlet structure 2, so that the gas is prevented from being exhausted from the gas inlet structure 2. When the piston 13 moves to the bottom of being close to the piston cylinder 1, the extension structure 14 shields the piston cylinder air inlet and outlet 12, the air outlet area is reduced, air outlet of the piston cylinder 1 is intercepted, the exhaust resistance is increased at the moment, the exhaust speed is reduced, and therefore the movement speed of the piston 13 is reduced, the purpose of protecting the sealing surface of the valve and the valve shaft is achieved until the spring 15 is completely reset. When the piston cylinder 1 admits air, under the promotion of the gas that admits air, floater 21 breaks away from the gas port, and the piston cylinder 1 realizes admitting air. The air inlet structure 2 controls the air inlet and exhaust speed of the piston cylinder 1, the valve is prevented from being quickly opened and closed, the possibility that sparks are generated due to quick impact of a valve core and a valve seat of the valve is greatly reduced, and therefore the oxygen regulating valve can adopt a hard sealing structure, and the service life of the valve is prolonged.
Claims (3)
1. The utility model provides a straight stroke actuating mechanism with air inlet structure, includes piston cylinder, air inlet structure, its characterized in that: the bottom of piston cylinder (1) is equipped with cylinder cap (11), be equipped with inlet structure (2) on the lateral wall of cylinder cap (11), the one end of the inside cavity of inlet structure (2) is equipped with the gas port, the other end of the inside cavity of inlet structure (2) extends to inside piston cylinder (1), be equipped with floater (21) in the inside cavity of inlet structure (2), the cylinder body bottom of piston cylinder (1) is provided with piston cylinder business turn over gas port (12), be equipped with piston (13) in piston cylinder (1), the bottom of piston (13) is equipped with extension structure (14), be equipped with spring (15) between the top of piston (13) and the internal surface of piston cylinder (1).
2. The linear actuator having an air intake structure according to claim 1, wherein: the extension structure (14) shields the air inlet and outlet (12) of the piston cylinder or is separated from the air inlet and outlet (12) of the piston cylinder.
3. The linear actuator having an air intake structure according to claim 1, wherein: the floating ball (21) shields the air port or is separated from the air port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922022285.XU CN211715885U (en) | 2019-11-21 | 2019-11-21 | Straight stroke actuating mechanism with air inlet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922022285.XU CN211715885U (en) | 2019-11-21 | 2019-11-21 | Straight stroke actuating mechanism with air inlet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211715885U true CN211715885U (en) | 2020-10-20 |
Family
ID=72814743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922022285.XU Active CN211715885U (en) | 2019-11-21 | 2019-11-21 | Straight stroke actuating mechanism with air inlet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211715885U (en) |
-
2019
- 2019-11-21 CN CN201922022285.XU patent/CN211715885U/en active Active
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