CN218094555U

CN218094555U - Quick-opening pneumatic actuator

Info

Publication number: CN218094555U
Application number: CN202222296233.3U
Authority: CN
Inventors: 潘岗; 王龙
Original assignee: Zhengzhou Chaofan Control Valve Co ltd
Current assignee: Zhengzhou Chaofan Control Valve Co ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-20
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a quick-open pneumatic actuator relates to pneumatic actuator technical field, including box, cylinder and enclosing cover, the box is both ends open-ended cylinder body structure, the cylinder sets up to two and establishes respectively at the both ends of box, the enclosing cover sets up to two and establishes respectively at the outer end of two cylinders, be equipped with the inner cup between box and the cylinder for the sealing of cylinder, the pivot is installed in the inside rotation of box, fixedly connected with shift fork, two in the pivot the coaxial interlude has the major axis between the inner cup, the middle part fixedly connected with round pin axle of major axis, round pin axle and shift fork pin junction, the both ends of major axis all are equipped with the piston, two the piston is established respectively in two cylinders and is rather than the inner wall laminating. The utility model discloses optimize the pneumatic route of executor, reduce pneumatic component in the pneumatic route, reach compressed air and can get into the executor in the shortest time to reach rapid switch valve's purpose.

Description

Quick-opening pneumatic actuator

Technical Field

The utility model relates to a pneumatic actuator technical field, in particular to quick-open pneumatic actuator.

Background

In the field use process of the pneumatic actuator, compressed air or compressed nitrogen is used for providing power, the actuator is required to be sensitive in action when the pneumatic quick-switching valve is used, the valve is quickly closed or opened to quickly cut off dangerous media, or the valve is required to be quickly opened or closed in emergency, and very clear requirements are provided for the valve opening and closing time.

Therefore, there is a need for a quick-opening pneumatic actuator that solves the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quick-open pneumatic actuator to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a quick-open pneumatic actuator, includes box, cylinder and enclosing cover, the box is both ends open-ended cylinder body structure, the cylinder sets up to two and establishes respectively at the both ends of box, the enclosing cover sets up to two and establishes respectively at the outer end of two cylinders, be equipped with the inner cup between box and the cylinder for the sealing of cylinder, the internal rotation of box installs the pivot, fixedly connected with shift fork, two in the pivot coaxial interlude has the major axis between the inner cup, the middle part fixedly connected with round pin axle of major axis, round pin axle and shift fork pin junction, the both ends of major axis all are equipped with the piston, two the piston is established respectively in two cylinders and is rather than the inner wall laminating, two the cylinder all is close to the one end of box or all is seted up the gas pocket in the one end that is close to the side.

Optionally, two air holes are provided with a quick-release valve.

Optionally, a through hole is formed in the middle of the inner cover and used for the long shaft to pass through, a plurality of sealing rings are installed in the through hole, and the inner sides of the sealing rings are attached to the long shaft.

Optionally, a groove is formed in the shifting fork from one end, far away from the rotating shaft, of the shifting fork in the direction of the rotating shaft, the shifting fork is used for moving the pin shaft, a pin shaft sleeve is sleeved on the outer side of the pin shaft, and the pin shaft sleeve is attached to the groove.

Optionally, bolt joints are arranged at two ends of the long shaft, a threaded hole is formed in the middle of the piston, the piston is screwed on the bolt joints through the threaded hole, and a locking nut is installed on the end portion of each bolt joint in a threaded mode and used for limiting the piston.

Optionally, the inner side of the outer cover is provided with a reinforcing plate, threaded holes are formed in the middle of the outer cover and the middle of the reinforcing plate, and a jackscrew is installed in the threaded hole of the outer cover and penetrates through the reinforcing plate.

The utility model discloses a technological effect and advantage:

the utility model discloses a set up the box, the cylinder, the enclosing cover, the inner cup, the apparatus further comprises a rotating shaft, the shift fork, the major axis, the round pin axle, piston and gas pocket and cooperation are used, major axis and piston are along a direction removal under pneumatic action, under stirring of round pin axle, the shift fork drives the pivot and rotates and realize the on-off operation, optimize the pneumatic route of executor, pneumatic element in the pneumatic route of reduction, it can get into the executor in the shortest time to reach compressed air, thereby reach rapid switching valve's purpose, and pneumatic element's reduction, production cost is reduced.

Drawings

Fig. 1 is a schematic view of the top cross-sectional structure of the present invention.

Fig. 2 is the schematic view of the sectional structure of the box body of the present invention.

Fig. 3 is the schematic view of the sectional structure of the cylinder of the present invention.

Fig. 4 is a graphical representation of experimental data for an AW25 pneumatic actuator.

Fig. 5 is a schematic diagram of the experimental data of the present invention.

In the figure: 1. a box body; 2. a cylinder barrel; 3. an outer cover; 4. an inner cover; 5. a rotating shaft; 6. a shifting fork; 7. a long axis; 8. a pin shaft; 9. a piston; 10. air holes; 11. a quick discharge valve; 12. a bolt joint; 13. locking the nut; 14. a reinforcing plate; 15. and (5) jacking the screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, 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.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides a as shown in fig. 1-3 a quick-open pneumatic actuator, the power distribution box comprises a box body 1, cylinder 2 and enclosing cover 3, box 1 is both ends open-ended cylinder body structure, cylinder 2 sets up to two and establishes respectively at the both ends of box 1, and the coaxial setting of two cylinders 2, enclosing cover 3 sets up to two and establishes respectively in the outer end of two cylinders 2, be equipped with inner cup 4 between box 1 and the cylinder 2, a seal for cylinder 2, box 1's inside rotation installs pivot 5, fixedly connected with shift fork 6 on the pivot 5, coaxial interlude has major axis 7 between two inner cups 4, the middle part fixedly connected with round pin axle 8 of major axis 7,

round pin axle

8 and 6 pin junction of shift fork, the both ends of major axis 7 all are equipped with piston 9, two piston 9 establish respectively in two cylinders 2 and laminate rather than the inner wall, two cylinders 2 all are close to the one end of box 1 in the side or all are close to the one end of enclosing cover 3 in the side and are seted up gas pocket 10.

The through-hole has been seted up at the middle part of inner cup 4 for pass of major axis 7 installs a plurality of sealing washers in the through-hole, and the inboard and the 7 laminating of major axis of sealing washer are used for gaseous sealed, prevent that gas from influencing the switching accuracy in letting in box 1 from the through-hole in the cylinder 2.

The shifting fork 6 is provided with a groove body towards the direction of the rotating shaft 5 from one end far away from the rotating shaft 5 and used for moving the pin shaft 8, a pin shaft sleeve is sleeved on the outer side of the pin shaft 8 and is attached to the groove body, friction between the pin shaft 8 and the shifting fork 6 groove body is reduced, and a protection effect is achieved.

The two ends of the long shaft 7 are provided with bolt joints 12, the middle part of the piston 9 is provided with a threaded hole, the piston is screwed on the bolt joints 12 through the threaded hole, and the end part of the bolt joints 12 is provided with a locking nut 13 through threads for limiting the piston 9.

The inboard fixed mounting of enclosing cover 3 has gusset plate 14, and threaded hole is all seted up at the middle part of enclosing cover 3 and gusset plate 14, and the threaded hole of enclosing cover 3 has twisted jackscrew 15 and has passed gusset plate 14 from 3 outside to threaded hole internal threads soon, and in the cylinder 2 was arranged in to jackscrew 15 tip, be equipped with the spacing ring on the jackscrew 15, after jackscrew 15 installation finished, its spacing ring and the laminating of enclosing cover 3 were spacing to jackscrew 15's position, were convenient for hold its mounted position.

It should be noted that: the inner cover 4 is fixedly arranged on the box body 1, the cylinder barrel 2 is fixedly arranged on the inner cover 4, when the interior of the actuator needs to be overhauled, the cylinder barrel 2 is disassembled on the inner cover 4, the inner cover 4 is disassembled on the box body 1, and all parts can be overhauled; assuming that the air hole 10 is arranged at one end of the cylinder barrel 2 close to the box body 1, a gap is always reserved between the piston 9 and the inner cover 4 and used for ventilating or exhausting air into the cylinder barrel 2 through the air hole 10, when the pneumatic actuator acts, compressed air or compressed nitrogen is used as a power source, compressed air is introduced into one air hole 10, compressed air in the cylinder barrel 2 is exhausted through the other air hole 10, the piston 9 is pushed to slide in the cylinder barrel 2 under the action of the compressed air, the long shaft 7 moves along the axis direction of the long shaft, the pin shaft 8 moves along with the long shaft, the shifting fork 6 is shifted to rotate by the movement of the pin shaft 8 under the limit of the groove body of the shifting fork 6, the rotating shaft 5 rotates along with the long shaft, the end part of the rotating shaft 5 is connected with a valve body, and the valve body can be driven to be opened or closed; when the piston 9 moves to the outer end from the inner end of the cylinder barrel 2, the locking nut 13 is in contact with the jackscrew 15 for limiting, so that the piston 9 is prevented from impacting bearing force to reduce the service life of the piston, pneumatic elements in the pneumatic path of the cylinder barrel 2 are reduced, compressed air can enter an actuator in the shortest time, and the aim of quickly opening and closing the valve is fulfilled;

the two air holes 10 can be provided with the quick exhaust valves 11, so that the exhaust rate of the compressed air in the cylinder barrel 2 is increased, and the switching speed of the pneumatic actuator is further increased.

The utility model provides a as shown contrast experiment data of fig. 4-5, all adopt AW30 filter, 4V310-10 solenoid valve, under 0.5MPa air supply pressure, simultaneously with 5 AW25 pneumatic actuator figures 4 and 5 the utility model discloses pneumatic actuator figure 5 carries out the contrast experiment of switching, and the result is as shown in fig. 4 and 5, and unit second is shown

The AW25 executor open time that used before reacing according to the experiment is 8.5 seconds, and close time is 8.3 seconds, the utility model discloses executor open time after the improvement is 3.5 seconds, and close time is 3.4 seconds, and valve on-off time has been reduced half in a year, and this research and development has promoted execution switch functioning speed by a wide margin, can be faster under emergency open or close the valve, has promoted overall system factor of safety, except can normally match the valve, still specially adapted has the valve that special quick response required, has the reaction time weak point, advantages such as action speed is fast.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the principles of the present invention.

Claims

1. A quick-open pneumatic actuator is characterized in that: including box (1), cylinder (2) and enclosing cover (3), box (1) is both ends open-ended cylinder body structure, cylinder (2) set up to two and establish respectively at the both ends of box (1), enclosing cover (3) set up to two and establish respectively in the outer end of two cylinders (2), be equipped with inner cup (4) between box (1) and cylinder (2) for the sealing of cylinder (2), the inside rotation of box (1) installs pivot (5), fixedly connected with shift fork (6) on pivot (5), two coaxial interlude has major axis (7) between inner cup (4), the middle part fixedly connected with round pin axle (8) of major axis (7), round pin axle (8) and shift fork (6) pin junction, the both ends of major axis (7) all are equipped with piston (9), two piston (9) are established respectively in two cylinders (2) and are laminated rather than the inner wall, two cylinder (2) all are close to the one end of box (1) in the side or all set up the one end that is close to enclosing cover (3) in the side has gas pocket (10).

2. A quick-opening pneumatic actuator as claimed in claim 1, wherein: and quick exhaust valves (11) are respectively arranged on the two air holes (10).

3. The quick-opening pneumatic actuator according to claim 1, wherein: the middle part of inner cup (4) has been seted up the through-hole for pass of major axis (7), install a plurality of sealing washers in the through-hole, the inboard and the major axis (7) laminating of sealing washer.

4. The quick-opening pneumatic actuator according to claim 1, wherein: the shifting fork (6) is provided with a groove body in the direction of the rotating shaft (5) from one end far away from the rotating shaft (5) and used for moving the pin shaft (8), a pin shaft sleeve is sleeved on the outer side of the pin shaft (8), and the pin shaft sleeve is attached to the groove body.

5. A quick-opening pneumatic actuator as claimed in claim 1, wherein: the two ends of the long shaft (7) are provided with bolt connectors (12), the middle of the piston (9) is provided with a threaded hole and screwed on the bolt connectors (12) through the threaded hole, and the end part of each bolt connector (12) is provided with a locking nut (13) in a threaded mode and used for limiting the piston (9).

6. The quick-opening pneumatic actuator according to claim 1, wherein: the inner side of the outer cover (3) is provided with a reinforcing plate (14), the middle parts of the outer cover (3) and the reinforcing plate (14) are provided with threaded holes, and the threaded holes of the outer cover (3) are internally provided with jackscrews (15) and penetrate through the reinforcing plate (14).