CN203009976U - Multi-sectional straight-stroke pneumatic actuator - Google Patents
Multi-sectional straight-stroke pneumatic actuator Download PDFInfo
- Publication number
- CN203009976U CN203009976U CN 201220743620 CN201220743620U CN203009976U CN 203009976 U CN203009976 U CN 203009976U CN 201220743620 CN201220743620 CN 201220743620 CN 201220743620 U CN201220743620 U CN 201220743620U CN 203009976 U CN203009976 U CN 203009976U
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- cylinder body
- stroke
- piston
- limited lever
- pneumatic actuator
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Abstract
The utility model discloses a multi-sectional straight-stroke pneumatic actuator comprising a cylinder body, a main piston, an output shaft, a positioning piston, a total-stroke limiting rod, a mid-stroke limiting rod, a total-stroke regulation nut and a mid-stroke regulation nut. The output shaft penetrates from the lower end of the cylinder body and is fixedly connected with the main piston in the cylinder body. The limiting piston is located in the cylinder body. The limiting piston and the main piston divide the cylinder body into three inner cavities including an upper inner cavity, a middle inner cavity and a lower inner cavity. The total-stroke limiting rod penetrates from the upper end of the cylinder body and abuts against the upper end face of the limiting piston. The mid-stroke limiting stroke penetrates from the total-stroke limiting rod and is fixedly connected with the limiting piston. When the multi-sectional straight-stroke pneumatic actuator is used, the position of the limiting piston can be regulated according to needs, so that a valve can be in a preset opening degree. The main piston is then controlled to work, so that the main piston can control the valve to be completedly opened and completely closed after reaching the preset opening degree. Therefore, the multi-sectional straight-stroke pneumatic actuator can be regulated by section and control the opening and closing of the valve.
Description
Technical field
The utility model relates to a kind of pneumatic actuator for opening/shutting valve.
Background technique
linear motion type pneumatic actuator is reliable and stable and quick during because of its work, be widely used on opening/shutting valve, but at present, usually only be provided with a main piston in the cylinder body of existing linear motion type pneumatic actuator, described main piston is separated into cylinder body, lower two inner chambers, therefore existing linear motion type pneumatic actuator can only be opened fully or close fully for control valve, but in actual applications, many times valve is not only simple unlatching fully or closes fully, fixedly open fully again or close fully after aperture but need to first open or close one, therefore there is certain narrow limitation in actual applications in existing linear motion type pneumatic actuator.
Summary of the invention
For the deficiencies in the prior art, the utility model provide a kind of application area wider, use and to have more multifarious multi-section type linear motion type pneumatic actuator.
for achieving the above object, the utility model provides a kind of multi-section type linear motion type pneumatic actuator, comprise cylinder body, main piston, output shaft, limiting piston, the total kilometres position-limited lever, the middle of stroke position-limited lever, the total kilometres adjusting nut, the middle of stroke adjusting nut, output shaft is penetrated by the lower end of cylinder body, and affixed with the main piston in cylinder body, described limiting piston is positioned at cylinder body, and limiting piston and main piston are separated into inner chamber of cylinder block, in, lower three inner chambers, the total kilometres position-limited lever penetrates from the upper end of cylinder body, and connect with the upper-end surface of limiting piston, described middle of stroke position-limited lever is by penetrating in the total kilometres position-limited lever, and affixed with limiting piston, be equiped with the middle of stroke adjusting nut on described middle of stroke position-limited lever, be equiped with the total kilometres adjusting nut on described total kilometres position-limited lever, offer on the upper end end cap of described cylinder body with cylinder body on the upper gas port of intracavity inter-connection, offer the lower gas port that is connected with the cylinder body lower inner cavity on the lower end end cap of described cylinder body, be equipped with in described middle of stroke position-limited lever with cylinder body in the middle gas tube of intracavity inter-connection.
the beneficial effects of the utility model are: adopt said structure, set up a limiting piston in described cylinder body due to the utility model, and limiting piston and main piston are separated into inner chamber of cylinder block, in, lower three inner chambers, therefore can first adjust as required the position of limiting piston, make valve be in a default aperture, and then control main piston work, make its control valve open fully again after reaching a default aperture or close fully, thereby make the unlatching of pneumatic actuator sectional provided by the utility model adjustment and control valve or close, its application area is wider, use has more diversity.
The utility model can further be set to described output shaft, total kilometres position-limited lever, middle of stroke position-limited lever and be coaxial setting.
The utility model also can further be set to described total kilometres adjusting nut and middle of stroke adjusting nut and all be positioned at outside cylinder body.
The utility model also can further be set to described upper gas port and lower gas port, and the outer end of middle gas tube on all be equiped with valve.
The utility model also can further be set to all be equiped with seal ring between described main piston and limiting piston and inboard wall of cylinder block.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
provided as shown in Figure 1 a kind of multi-section type linear motion type pneumatic actuator, comprise cylinder body 1, main piston 2, output shaft 3, limiting piston 4, total kilometres position-limited lever 5, middle of stroke position-limited lever 6, total kilometres adjusting nut 7, middle of stroke adjusting nut 8, output shaft 3 is penetrated by the lower end of cylinder body 1, and affixed with the main piston 2 in cylinder body 1, described limiting piston 4 is positioned at cylinder body 1, and limiting piston 4 is separated into cylinder body 1 inner chamber with main piston 2, in, lower three inner chambers (101, 102, 103), total kilometres position-limited lever 5 penetrates from the upper end of cylinder body 1, and connect with the upper-end surface of limiting piston 4, described middle of stroke position-limited lever 6 is by penetrating in total kilometres position-limited lever 5, and affixed with limiting piston 4, be equiped with middle of stroke adjusting nut 8 on described middle of stroke position-limited lever 6, be equiped with total kilometres adjusting nut 7 on described total kilometres position-limited lever 5, offer the upper gas port 104 that is connected with inner chamber 101 on cylinder body on the upper end end cap of described cylinder body 1, offer the lower gas port 105 that is connected with cylinder body lower inner cavity 103 on the lower end end cap of described cylinder body 1, be equipped with the middle gas tube 106 that is connected with inner chamber 102 in cylinder body in described middle of stroke position-limited lever 6.When therefore using, can first adjust as required the position of limiting piston 4, make valve be in a default aperture, and then control main piston 2 and work, make its control valve open fully again after reaching a default aperture or close fully, thereby make the unlatching of pneumatic actuator sectional provided by the utility model adjustment and control valve or close, its application area is wider, use has more diversity.Described output shaft 3, total kilometres position-limited lever 5, middle of stroke position-limited lever 6 are coaxial setting.Described total kilometres adjusting nut 7 and middle of stroke adjusting nut 7 all are positioned at outside cylinder body 1.Described upper gas port 104 and lower gas port 105, and the outer end of middle gas tube 106 on all be equiped with valve 9.All be equiped with seal ring 10 between described main piston 2 and limiting piston 4 and cylinder body 1 inwall.The position of concrete main piston 2 is adjusted: can by rotation total kilometres adjusting nut 7, make relative total kilometres adjusting nut 7 oscilaltions of total kilometres position-limited lever 5, and then control total kilometres.The position of concrete limiting piston 4 is adjusted: can be by rotation middle of stroke adjusting nut 8, make relative middle of stroke adjusting nut 8 oscilaltions of middle of stroke position-limited lever 6, and then control default stroke-limit, thereby realize accurately default keying aperture and the final position that opens and closes of control valve.
Claims (5)
1. multi-section type linear motion type pneumatic actuator, comprise cylinder body, main piston, output shaft, output shaft is penetrated by the lower end of cylinder body, and affixed with the main piston in cylinder body, it is characterized in that: also include limiting piston, the total kilometres position-limited lever, the middle of stroke position-limited lever, the total kilometres adjusting nut, the middle of stroke adjusting nut, described limiting piston is positioned at cylinder body, and limiting piston and main piston are separated into inner chamber of cylinder block, in, lower three inner chambers, the total kilometres position-limited lever penetrates from the upper end of cylinder body, and connect with the upper-end surface of limiting piston, described middle of stroke position-limited lever is by penetrating in the total kilometres position-limited lever, and affixed with limiting piston, be equiped with the middle of stroke adjusting nut on described middle of stroke position-limited lever, be equiped with the total kilometres adjusting nut on described total kilometres position-limited lever, offer on the upper end end cap of described cylinder body with cylinder body on the upper gas port of intracavity inter-connection, offer the lower gas port that is connected with the cylinder body lower inner cavity on the lower end end cap of described cylinder body, be equipped with in described middle of stroke position-limited lever with cylinder body in the middle gas tube of intracavity inter-connection.
2. multi-section type linear motion type pneumatic actuator according to claim 1, it is characterized in that: described output shaft, total kilometres position-limited lever, middle of stroke position-limited lever are coaxial setting.
3. multi-section type linear motion type pneumatic actuator according to claim 1, it is characterized in that: described total kilometres adjusting nut and middle of stroke adjusting nut all are positioned at outside cylinder body.
4. multi-section type linear motion type pneumatic actuator according to claim 1 is characterized in that: described upper gas port and lower gas port, and the outer end of middle gas tube on all be equiped with valve.
5. multi-section type linear motion type pneumatic actuator according to claim 1, is characterized in that: all be equiped with seal ring between described main piston and limiting piston and inboard wall of cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743620 CN203009976U (en) | 2012-12-31 | 2012-12-31 | Multi-sectional straight-stroke pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743620 CN203009976U (en) | 2012-12-31 | 2012-12-31 | Multi-sectional straight-stroke pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009976U true CN203009976U (en) | 2013-06-19 |
Family
ID=48601573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220743620 Expired - Lifetime CN203009976U (en) | 2012-12-31 | 2012-12-31 | Multi-sectional straight-stroke pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009976U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654718A (en) * | 2017-10-30 | 2018-02-02 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of two-part pneumatic valve group filling for big flow and packaging process |
| CN111332474A (en) * | 2018-12-18 | 2020-06-26 | 波音公司 | Deformable seat assembly |
-
2012
- 2012-12-31 CN CN 201220743620 patent/CN203009976U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654718A (en) * | 2017-10-30 | 2018-02-02 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of two-part pneumatic valve group filling for big flow and packaging process |
| CN111332474A (en) * | 2018-12-18 | 2020-06-26 | 波音公司 | Deformable seat assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |