CN204176100U - A kind of pneumatic actuator - Google Patents
A kind of pneumatic actuator Download PDFInfo
- Publication number
- CN204176100U CN204176100U CN201420617900.6U CN201420617900U CN204176100U CN 204176100 U CN204176100 U CN 204176100U CN 201420617900 U CN201420617900 U CN 201420617900U CN 204176100 U CN204176100 U CN 204176100U
- Authority
- CN
- China
- Prior art keywords
- cylinder head
- piston
- cylinder block
- valve rod
- cylinder
- 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 relates to a kind of final controlling element, refers to the pneumatic actuator for control valve especially.The utility model is by the following technical solutions: a kind of pneumatic actuator, it is characterized in that: include cylinder block, cylinder head, piston, Compress Spring, upper valve rod and lower valve rod, cylinder head screw thread is screwed in cylinder block, described piston is placed in the inner chamber of cylinder head, the upside of described piston is fixedly installed upper valve rod, the downside of piston is fixedly installed lower valve rod, described Compress Spring is arranged on the holding cavity of the side of piston, the opposite side of piston is booster cavity, described cylinder head is provided with first, the second two through holes, first through hole directly and booster cavity or holding cavity through, second through hole by after the passage that arranges between cylinder head and cylinder block with holding cavity or booster cavity through.By adopting such scheme, the utility model overcomes the deficiency that prior art exists, and provides a kind of structure, the pneumatic actuator that stem guiding is good.
Description
Technical field
The utility model relates to a kind of final controlling element, refers to the pneumatic actuator for control valve especially.
Background technique
At present, the sanitary pneumatic final controlling element of domestic use due to unreasonable structure, so valve rod is poor in guiding; Material major part uses stainless steel and plastics in addition, and wherein seem heavy with the pneumatic actuator that stainless steel material is shaped, material is regular occurs sand holes, pore; The pneumatic actuator that plastic materials is shaped easily is out of shape, and tightness is poor.
Summary of the invention
The utility model overcomes the deficiency that prior art exists, and provides a kind of structure, the pneumatic actuator that stem guiding is good.
To achieve these goals, the utility model is by the following technical solutions: a kind of pneumatic actuator, it is characterized in that: include cylinder block, cylinder head, piston, Compress Spring, upper valve rod and lower valve rod, the circumferential lateral surface of wherein cylinder head is provided with screw thread, the inner chamber side of cylinder block is provided with screw thread, cylinder head screw thread is screwed in cylinder block, described piston is placed in the inner chamber of cylinder head, the upside of described piston is fixedly installed upper valve rod, the downside of piston is fixedly installed lower valve rod, upper valve rod coordinates with the through hole movable sealing grafting of cylinder head axle central position, lower valve rod coordinates with the through hole movable sealing grafting of cylinder block axle central position, described Compress Spring is arranged on the holding cavity of the side of piston, the opposite side of piston is booster cavity, described cylinder head is provided with first, the second two through holes, first through hole directly and booster cavity or holding cavity through, second through hole by after the passage that arranges between cylinder head and cylinder block with holding cavity or booster cavity through.
By adopting such scheme, make the stem guiding of this pneumatic actuator good, wherein the first through hole and the second through hole adopt such scheme to arrange, rational in infrastructure, and reduce the cost of production of product, in employing, lower valve rod arranges the stability that can ensure piston movement.
Further setting of the present utility model is: the cross section of described piston becomes " several " font, its limit to downward-extension be Compress Spring compress limit, this compresses limit and is arranged to step-like, described Compress Spring is provided with two, conflict in cylinder head or cylinder block inwall in two Compress Spring one end, the other end is conflicted respectively and to be compressed on two steps on limit at piston.
By the scheme arranged further, make the movement of piston more stable, show on the set-up mode of piston-shaped setting and Compress Spring, wherein piston " several " font arranges the surface of contact that can increase gas.
Of the present utility model setting further is again: the upper end side face of described cylinder head is provided with convex shoulder, the upper-end surface of described cylinder block is provided with groove, the first seal ring is provided with in groove, being sealed and matched both the first seal ring is formed after cylinder head and cylinder block spin, the limit periphery that compresses of described piston is provided with the second seal ring, and the second seal ring coordinates with cylinder head inner chamber side face movable sealing.
By the scheme arranged further, be the further guarantee to product performance, wherein the first seal ring adopts such scheme, can well ensure sealing between the two.
The utility model is finally arranged: described Compress Spring is arranged on the top of piston, booster cavity is arranged on the below of piston, described cylinder head outer circumferential face is provided with one section of screw thread near convex shoulder, screw section is axially provided with groove along it, this groove and the second through hole through, the bottom that cylinder head outer circumferential face is positioned at screw thread is smooth surface, the spin smooth surface of rear cylinder lid and the inner chamber wall interval of cylinder block of cylinder head and cylinder block arranges and forms air inlet or air outlet flue, and described groove and air inlet or air outlet flue form the passage between cylinder head and cylinder block.
By the scheme arranged further, make the utility model product better effects if, wherein when the second through hole is intake duct time, can ensure that gas enters booster cavity from the surrounding of cylinder block, the impulse force that such piston is subject to is relatively more even, runs more stable.
Newly be described in further detail originally practical below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is that the utility model embodiment one reflects the first through hole and the through structural representation of holding cavity;
Fig. 2 is that the utility model embodiment one reflects the second through hole and the through structural representation of booster cavity;
Fig. 3 is the structural representation that the utility model embodiment one reflects cylinder head first through hole and the second through hole;
Fig. 4 is the structural representation that the utility model implements a reflection groove.
Fig. 5 is that the utility model implements two reflection the first through holes and the through structural representation of holding cavity;
Fig. 6 is that the utility model embodiment one reflects the second through hole and the through structural representation of booster cavity.
Embodiment
As shown in Fig. 1-Fig. 4, embodiment one, a kind of pneumatic actuator, include cylinder block 1, cylinder head 2, piston 3, Compress Spring 4, upper valve rod 5 and lower valve rod 6, the circumferential lateral surface of wherein cylinder head 2 is provided with screw thread 21, the inner chamber side of cylinder block 1 is provided with screw thread, cylinder head 2 screw thread is screwed in cylinder block 1, described piston 3 is placed in the inner chamber 22 of cylinder head 2, the upside of described piston 3 is fixedly installed upper valve rod 5, the downside of piston 3 is fixedly installed lower valve rod 6, upper valve rod 5 coordinates with the through hole movable sealing grafting of cylinder head 2 axle central position, lower valve rod 6 coordinates with the through hole movable sealing grafting of cylinder block 1 axle central position, described Compress Spring 4 is arranged on the holding cavity 23 of piston 2 side, the opposite side of piston 3 is booster cavity 24, described cylinder head 2 is provided with first, the second two through holes 25, 26, first through hole 25 is direct and holding cavity 23 is through, it is through with booster cavity 24 after second through hole 26 passes through the passage arranged between cylinder head 2 and cylinder block 1.In this enforcement, we also can as described in the fig 5 and 6, and embodiment two, and the first through hole 25 is direct and booster cavity 24 is through, through with holding cavity 23 after the second through hole 26 passes through the passage arranged between cylinder head 2 and cylinder block 1.By adopting such scheme, make the stem guiding of this pneumatic actuator good, wherein the first through hole 25 and the second through hole 26 adopt such scheme to arrange, rational in infrastructure, reduce the cost of production of product, in employing, lower valve rod 5,6 arranges the stability that can ensure that piston 3 moves.
The utility model is implemented in one, the cross section of described piston 3 becomes " several " font, what its limit 31 to downward-extension was Compress Spring 4 compresses limit 31, this compresses limit 31 and is arranged to step-like, described Compress Spring 4 is provided with two, conflict in cylinder head 2 or cylinder block 1 inwall in two Compress Spring 4 one end, the other end is conflicted respectively and is compressed on two steps on limit 31 at piston, by the scheme arranged further, make the movement of piston 3 more stable, show on the setting of piston 3 shape and the set-up mode of Compress Spring 4, wherein piston 3 " several " font arranges the surface of contact that can increase gas.
Implement in one at the utility model, the upper end side face of described cylinder head 2 is provided with convex shoulder 27, the upper-end surface of described cylinder block 1 is provided with groove, the first seal ring 7 is provided with in groove, being sealed and matched both the first seal ring 7 is formed after cylinder head 2 and cylinder block 1 spin, limit 31 periphery that compresses of described piston 3 is provided with the second seal ring 311, second seal ring 311 coordinates with cylinder head 2 inner chamber side face movable sealing, described Compress Spring 4 is arranged on the top of piston 3, booster cavity 24 is arranged on the below of piston 3, described cylinder head 2 outer circumferential face is provided with one section of screw thread 21 near convex shoulder 27, screw section 21 is axially provided with groove 211 along it, this groove 211 and the second through hole 26 through, the bottom that cylinder head 2 outer circumferential face is positioned at screw thread 21 is smooth surface 212, the spin smooth surface 212 of rear cylinder lid 2 and the inner chamber wall interval of cylinder block 1 of cylinder head 2 and cylinder block 1 arranges and forms air inlet or air outlet flue 2121, described groove 211 and air inlet or air outlet flue 2121 form the passage between cylinder head 2 and cylinder block 1, such guarantee gas enters booster cavity 24 from the surrounding of cylinder block 2, the impulse force that piston 3 is subject to is more even, run more stable.
Claims (4)
1. a pneumatic actuator, it is characterized in that: include cylinder block, cylinder head, piston, Compress Spring, upper valve rod and lower valve rod, the circumferential lateral surface of wherein cylinder head is provided with screw thread, the inner chamber side of cylinder block is provided with screw thread, cylinder head screw thread is screwed in cylinder block, described piston is placed in the inner chamber of cylinder head, the upside of described piston is fixedly installed upper valve rod, the downside of piston is fixedly installed lower valve rod, upper valve rod coordinates with the through hole movable sealing grafting of cylinder head axle central position, lower valve rod coordinates with the through hole movable sealing grafting of cylinder block axle central position, described Compress Spring is arranged on the holding cavity of the side of piston, the opposite side of piston is booster cavity, described cylinder head is provided with first, the second two through holes, first through hole directly and booster cavity or holding cavity through, second through hole by after the passage that arranges between cylinder head and cylinder block with holding cavity or booster cavity through.
2. pneumatic actuator according to claim 1, it is characterized in that: the cross section of described piston becomes " several " font, its limit to downward-extension be Compress Spring compress limit, this compresses limit and is arranged to step-like, described Compress Spring is provided with two, conflict in cylinder head or cylinder block inwall in two Compress Spring one end, the other end is conflicted respectively and to be compressed on two steps on limit at piston.
3. pneumatic actuator according to claim 2, it is characterized in that: the upper end side face of described cylinder head is provided with convex shoulder, the upper-end surface of described cylinder block is provided with groove, the first seal ring is provided with in groove, being sealed and matched both the first seal ring is formed after cylinder head and cylinder block spin, the limit periphery that compresses of described piston is provided with the second seal ring, and the second seal ring coordinates with cylinder head inner chamber side face movable sealing.
4. pneumatic actuator according to claim 3, it is characterized in that: described Compress Spring is arranged on the top of piston, booster cavity is arranged on the below of piston, described cylinder head outer circumferential face is provided with one section of screw thread near convex shoulder, screw section is axially provided with groove along it, this groove and the second through hole through, the bottom that cylinder head outer circumferential face is positioned at screw thread is smooth surface, the spin smooth surface of rear cylinder lid and the inner chamber wall interval of cylinder block of cylinder head and cylinder block arranges and forms air inlet or air outlet flue, described groove and air inlet or air outlet flue form the passage between cylinder head and cylinder block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420617900.6U CN204176100U (en) | 2014-10-23 | 2014-10-23 | A kind of pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420617900.6U CN204176100U (en) | 2014-10-23 | 2014-10-23 | A kind of pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204176100U true CN204176100U (en) | 2015-02-25 |
Family
ID=52564910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420617900.6U Expired - Fee Related CN204176100U (en) | 2014-10-23 | 2014-10-23 | A kind of pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204176100U (en) |
-
2014
- 2014-10-23 CN CN201420617900.6U patent/CN204176100U/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: 20150225 Termination date: 20211023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |