CN201944389U - Linear motion type pneumatic actuator - Google Patents
Linear motion type pneumatic actuator Download PDFInfo
- Publication number
- CN201944389U CN201944389U CN2011200077414U CN201120007741U CN201944389U CN 201944389 U CN201944389 U CN 201944389U CN 2011200077414 U CN2011200077414 U CN 2011200077414U CN 201120007741 U CN201120007741 U CN 201120007741U CN 201944389 U CN201944389 U CN 201944389U
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- CN
- China
- Prior art keywords
- piston
- cavity
- pneumatic actuator
- spring
- linear motion
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- Expired - Fee Related
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Abstract
The utility model relates to a linear motion type pneumatic actuator, which is used on a valve and can open or close the valve. The linear motion type pneumatic actuator adopts the technical scheme as follows: the linear motion type pneumatic actuator is characterized in that the pneumatic actuator comprises a sealed cavity; a gas inlet and outlet passage is formed on one side of the cavity; a piston is arranged inside the cavity; a piston rod is arranged at the middle part of the piston in a linked manner; the periphery of the piston is matched with the inner side surface of the cavity in a dynamic seal manner; a spring positioned on the other side of the gas inlet and outlet passage is arranged on the piston; and the spring butts against the inner top surfaces of the piston and the cavity. By adopting the scheme, the linear motion type pneumatic actuator overcomes the disadvantages in the prior art, the piston principle is utilized, and a pneumatic manner is adopted to open or close the valve.
Description
Technical field
The utility model relates to a kind of pneumatic actuator of that use and the straight journey that can open or close valve on valve.
Background technique
At present, the operation that valve is opened or closed is following two kinds of situations basically: 1, manually-operable, and this mode is cumbersome, and particularly large-scale valve operation requires great effort very much, time-consuming; 2, driven by motor operation, this mode is more convenient, but motor cost is very high, and breaks down easily, so ideal that neither be very.
Summary of the invention
The utility model overcomes the deficiency that prior art exists, and a kind of piston principle of utilizing is provided, and adopts pneumatic mode to realize valve open or the novel straight journey pneumatic actuator of closing.
For achieving the above object, the utility model adopts following scheme: a kind of straight journey pneumatic actuator, it is characterized in that: the cavity that includes a sealing, one side of cavity is provided with turnover gas passage, be provided with piston in the described cavity, middle of piston links with it is provided with piston rod, and motive sealing cooperates between the periphery of described piston and the inner side surface of cavity, the opposite side that is positioned at turnover gas passage of described piston is provided with spring, and spring is conflicted on the inner top surface of piston and cavity.
By adopting such scheme, the craspedodrome pneumatic actuator that this is used on the valve is simple in structure, and operation is convenient, and cost is low, advantages such as long service life.
Further setting of the present utility model is: described piston is provided with spring seat, and spring is fixedly installed on the spring seat, fixes by the retaining nut between described piston and the piston rod; On the described cavity and with end face that spring contacts on driving lever is set, driving lever is provided with Returnning spring, piston cooperates the telescopic moving that constitutes driving lever with Returnning spring.
Below in conjunction with accompanying drawing the utility model is described further.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of straight journey pneumatic actuator, include the cavity 1 of a sealing, one side of cavity 1 is provided with turnover gas passage 11, be provided with piston 2 in the described cavity 1, link with it in the middle part of piston 2 is provided with piston rod 3, motive sealing cooperates between the inner side surface of the periphery of described piston 2 and cavity 1, the opposite side that is positioned at turnover gas passage 11 of described piston 2 is provided with spring 4, and spring 4 is conflicted on the inner top surface of piston 2 and cavity 1, adopts such scheme, the craspedodrome pneumatic actuator that this is used on the valve is simple in structure, operation is convenient, and cost is low, advantages such as long service life.
In the utility model embodiment, described piston 2 is provided with spring seat 5, and spring 4 is fixedly installed on the spring seat 5, and is fixing by retaining nut 8 between described piston 2 and the piston rod 3; On the described cavity 1 and with end face that spring 4 contacts on driving lever 6 is set, driving lever 6 is provided with Returnning spring 7, piston 2 cooperates the telescopic moving that constitutes driving lever 6 with Returnning spring 7, like this as long as be positioned to be provided with position limit switch on one of driving lever 6 tops, just can control the stroke of final controlling element, very convenient.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to the foregoing description, and many distortion can also be arranged.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. straight journey pneumatic actuator, it is characterized in that: the cavity that includes a sealing, one side of cavity is provided with turnover gas passage, be provided with piston in the described cavity, middle of piston links with it is provided with piston rod, motive sealing cooperates between the periphery of described piston and the inner side surface of cavity, and the opposite side that is positioned at turnover gas passage of described piston is provided with spring, and spring is conflicted on the inner top surface of piston and cavity.
2. straight journey pneumatic actuator according to claim 1 is characterized in that: described piston is provided with spring seat, and spring is fixedly installed on the spring seat, fixes by the retaining nut between described piston and the piston rod.
3. straight journey pneumatic actuator according to claim 1 and 2 is characterized in that: on the described cavity and with end face that spring contacts on driving lever is set, driving lever is provided with Returnning spring, piston cooperates the telescopic moving that constitutes driving lever with Returnning spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200077414U CN201944389U (en) | 2011-01-12 | 2011-01-12 | Linear motion type pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200077414U CN201944389U (en) | 2011-01-12 | 2011-01-12 | Linear motion type pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201944389U true CN201944389U (en) | 2011-08-24 |
Family
ID=44471733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200077414U Expired - Fee Related CN201944389U (en) | 2011-01-12 | 2011-01-12 | Linear motion type pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201944389U (en) |
-
2011
- 2011-01-12 CN CN2011200077414U patent/CN201944389U/en not_active Expired - Fee Related
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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: 20110824 Termination date: 20190112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |