CN210890320U - Pneumatic adjusting device - Google Patents
Pneumatic adjusting device Download PDFInfo
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- CN210890320U CN210890320U CN201921977396.XU CN201921977396U CN210890320U CN 210890320 U CN210890320 U CN 210890320U CN 201921977396 U CN201921977396 U CN 201921977396U CN 210890320 U CN210890320 U CN 210890320U
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Abstract
The utility model belongs to the technical field of pneumatic actuators, and discloses a pneumatic adjusting device, which comprises a cylinder body, a piston moving along the inner wall of the cylinder body, a piston rod, a locking cap and a connecting rod, wherein the piston rod penetrates through the piston and is hermetically connected with the piston, and the first end of the piston rod is connected with a valve; the locking cap is fixed on the outer wall of the cylinder body, a through hole communicated with the cylinder body is formed in the locking cap, an adjusting rod is arranged at one end, far away from the cylinder body, in the through hole, and the adjusting rod is movably connected with the through hole; the head of the connecting rod is connected with the second end of the piston rod, and the tail of the connecting rod can be driven by the piston rod to move in the through hole and contact with the head of the adjusting rod. The utility model has the advantages that: the stroke of the piston rod can be changed by manually adjusting the position of the adjusting rod, so that the stroke of the pneumatic actuator is changed, and the flow can be controlled by adjusting the stroke of the pneumatic actuator to adjust the size of the valve.
Description
Technical Field
The utility model relates to a pneumatic actuator technical field especially relates to a pneumatic adjusting device.
Background
Actuators are important components of automatic control systems, which convert control signals from a controller into actions to manipulate energy entering the plant to maintain a controlled variable at a desired value or within a certain range.
As shown in fig. 2, the conventional pneumatic actuator includes a cylinder 1 ', a piston 2', a piston rod 3 ', etc., and the stroke of the pneumatic actuator is fixed, and is determined by the distance S between the piston 2' and a limit block. The pneumatic actuator is usually difficult to adjust and change the stroke, so that the pneumatic actuator is not flexible to use and has a small application range.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pneumatic adjusting device, the accessible is adjusted pneumatic actuator's stroke and is come the switch size control flow of governing valve, and application scope is wider, uses more in a flexible way.
To achieve the purpose, the utility model adopts the following technical proposal:
a pneumatic adjustment device comprising a cylinder and a piston moving along an inner wall of the cylinder, further comprising:
the piston rod penetrates through the piston and is connected with the piston in a sealing mode, and the first end of the piston rod is connected with the valve;
the locking cap is fixed on the outer wall of the cylinder body, a through hole communicated with the cylinder body is formed in the locking cap, an adjusting rod is arranged at one end, far away from the cylinder body, in the through hole, and the adjusting rod is movably connected with the through hole;
the head of the connecting rod is connected with the second end of the piston rod, and the tail of the connecting rod can be driven by the piston rod to move in the through hole and be in contact with the head of the adjusting rod.
Preferably, the adjusting rod is in threaded connection with the through hole.
Preferably, the tail of the adjusting rod extends out of the through hole, and a nut is arranged at the tail of the adjusting rod to lock the adjusting rod.
Preferably, a decorative cap is further arranged on the outer side of the locking cap.
Preferably, a first O-ring is arranged at the joint of the locking cap and the cylinder body.
Preferably, a second O-shaped ring is arranged on a matching surface between the connecting rod and the through hole.
Preferably, the connecting rod is threadedly connected to the piston rod.
Preferably, the locking cap is threadedly coupled to the cylinder.
Preferably, the decoration cap is screwed with the locking cap.
The utility model has the advantages that: the stroke of the piston rod can be changed by manually adjusting the position of the adjusting rod, so that the stroke of the pneumatic actuator is changed, and the flow can be controlled by adjusting the stroke of the pneumatic actuator to adjust the size of the valve.
Drawings
FIG. 1 is a schematic structural diagram of a pneumatic adjustment apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a conventional pneumatic actuator.
In the figure:
1. a decorative cap; 2. a nut; 3. adjusting a rod; 4. a first O-ring; 5. a second O-ring; 6. a cylinder body; 7. a piston; 8. locking the cap; 9. a connecting rod; 10. a piston rod;
1', a cylinder body; 2', a piston; 3', a piston rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes to distinguish one from another.
As shown in fig. 1, the utility model provides a pneumatic adjusting device, which comprises a cylinder body 6, a piston 7 moving along the inner wall of the cylinder body 6, a piston rod 10, a locking cap 8 and a connecting rod 9, wherein the piston rod 10 penetrates through the piston 7 and is hermetically connected with the piston 7, and the first end of the piston rod 10 is connected with a valve; the locking cap 8 is fixed on the outer wall of the cylinder body 6, a through hole communicated with the cylinder body 6 is formed in the locking cap 8, an adjusting rod 3 is arranged at one end, far away from the cylinder body 6, in the through hole, and the adjusting rod 3 is movably connected with the through hole; the head of the connecting rod 9 is connected with the second end of the piston rod 10, and the tail of the connecting rod 9 can be driven by the piston rod 10 to move in the through hole and contact with the head of the adjusting rod 3.
The utility model discloses to carry out the spacing change into by locking cap 8 and adjusting the limit structure that pole 3 constitutes by stopper to piston 7 now and carry on spacingly to piston 7 to the convenience is adjusted pneumatic actuator's stroke, and then realizes nimble adjusting valve's switch size.
Embodiments of the present embodiment will be described below with reference to the drawings.
As shown in fig. 1, a cylindrical tongue body connected with the inner wall of the cylinder 6 is arranged inside the cylinder 6, the tongue body is communicated with the outside, the lower end of the piston rod 10 is connected with the valve, the upper end of the piston rod 10 extends into the tongue body, and the tongue body can support and limit the piston rod 10, so that the piston 7 can be ensured to have better stability when moving inside the cylinder 6.
The locking cap 8 is a columnar rotator, an inner thread is arranged on the inner wall of the upper end of the tongue body, a threaded interface is arranged at the lower end of the locking cap 8, an external thread matched with the internal thread on the tongue body is arranged on the threaded interface, and the locking cap 8 is connected with the cylinder body 6 through the threaded interface. In order to prevent the gas in the cylinder 6 from leaking out from the joint between the locking cap 8 and the cylinder 6, a first O-ring 4 is provided on the mating surface between the upper end of the tongue and the locking cap 8 for sealing between the locking cap 8 and the cylinder 6.
The inside cavity of locking cap 8 forms the through-hole, and the upper portion of through-hole is equipped with the internal thread, adjusts 3 outer walls of pole setting and through-hole in internal thread complex external screw thread, will adjust pole 3 and put into the through-hole after, can adjust the position of pole 3 in the through-hole through twisting the regulation pole 3 soon. The lower part of the through hole is provided with a connecting rod 9, the lower end of the connecting rod 9 is in threaded connection with a piston rod 10, and the upper end of the connecting rod 9 extends into the through hole and reciprocates along with the piston rod 10 in the through hole. In order to avoid that the gas in the cylinder leaks out through the through hole of the locking cap 8, a second O-ring 5 is provided at the mating surface of the connecting rod 9 and the through hole.
In order to lock the adjusting lever 3 after the adjusting lever 3 is adjusted in place. The upper end of the adjusting rod 3 is provided with a nut 2, and the nut 2 is in threaded connection with the adjusting rod 3. And screwing the nut 2 to enable the lower end face of the nut 2 to be in close contact with the upper end of the locking cap 8, so that the threads of the adjusting rod 3 and the threads on the inner wall of the locking cap 8 are mutually fastened to be locked. In order to make the pneumatic adjusting device more beautiful, the outer side of the locking cap cover 8 is also provided with the decorative cap 1, and the decorative cap 1 can also play a dustproof and antirust protection role on the locking cap cover 8.
Compared with the prior art, the main structure of the cylinder body 6 and the piston rod 10 is reserved, the connecting rod 9 and the locking cap 8 used for limiting are added, transformation is easy to achieve, and transformation cost is low. In other embodiments, the connecting rod 9 and the piston rod 10 can be integrally formed, so that the number of connecting pieces is reduced, and the manufacturing precision of the device is improved.
To sum up, the utility model discloses a manual regulation adjusts the position of pole 3, can change the stroke of piston rod 10 to pneumatic actuator's stroke has been changed, and then the accessible is adjusted pneumatic actuator's stroke and is come the switch size control flow of governing valve, and application scope is wider, uses more in a flexible way.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A pneumatic adjustment device comprising a cylinder (6) and a piston (7) moving along the inner wall of said cylinder (6), characterized in that it further comprises:
the piston rod (10) penetrates through the piston (7) and is connected with the piston (7) in a sealing mode, and the first end of the piston rod (10) is connected with the valve;
the locking cap (8) is fixed on the outer wall of the cylinder body (6), a through hole communicated with the cylinder body (6) is formed in the locking cap (8), an adjusting rod (3) is arranged at one end, far away from the cylinder body (6), in the through hole, and the adjusting rod (3) is movably connected with the through hole;
the head of the connecting rod (9) is connected with the second end of the piston rod (10), and the tail of the connecting rod (9) can be driven by the piston rod (10) to move in the through hole and contact with the head of the adjusting rod (3).
2. Pneumatic adjustment device according to claim 1,
the adjusting rod (3) is in threaded connection with the through hole.
3. Pneumatic adjustment device according to claim 2,
the tail of the adjusting rod (3) extends out of the through hole, and a nut (2) is arranged at the tail of the adjusting rod (3) to lock the adjusting rod (3).
4. Pneumatic adjustment device according to claim 1,
the outer side of the locking cap cover (8) is also provided with a decorative cap (1).
5. Pneumatic adjustment device according to claim 1,
and a first O-shaped ring (4) is arranged at the joint of the locking cap (8) and the cylinder body (6).
6. Pneumatic adjustment device according to claim 1,
and a second O-shaped ring (5) is arranged on the matching surface between the connecting rod (9) and the through hole.
7. Pneumatic adjustment device according to claim 1,
the connecting rod (9) is in threaded connection with the piston rod (10).
8. Pneumatic adjustment device according to claim 1,
the locking cap (8) is in threaded connection with the cylinder body (6).
9. Pneumatic adjustment device according to claim 4,
the decorative cap (1) is in threaded connection with the locking cap cover (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921977396.XU CN210890320U (en) | 2019-11-15 | 2019-11-15 | Pneumatic adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921977396.XU CN210890320U (en) | 2019-11-15 | 2019-11-15 | Pneumatic adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210890320U true CN210890320U (en) | 2020-06-30 |
Family
ID=71316953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921977396.XU Active CN210890320U (en) | 2019-11-15 | 2019-11-15 | Pneumatic adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210890320U (en) |
-
2019
- 2019-11-15 CN CN201921977396.XU patent/CN210890320U/en active Active
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