CN218440927U

CN218440927U - Single-action pneumatic actuator

Info

Publication number: CN218440927U
Application number: CN202222363476.4U
Authority: CN
Inventors: 胥明新; 王莉萍
Original assignee: Jiangsu Gongteng Automatic Control Valve Co ltd
Current assignee: Jiangsu Gongteng Automatic Control Valve Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-02-03
Anticipated expiration: 2032-09-06

Abstract

The utility model relates to a single-action pneumatic actuator, comprising a cylinder body, the right-hand member of cylinder body is equipped with four bolts, the right-hand member of cylinder body has the mounting panel through the bolt fastening, the internal perisporium sliding connection of cylinder body has the sealing washer, the internal perisporium of sealing washer is fixed with the piston, the left end of piston is fixed with the connecting rod, the left end of connecting rod is equipped with adjusting part, the left end of piston is fixed with the spring, the one end that the piston was kept away from to the spring is fixed with the baffle. This single-action pneumatic actuator is through setting up adjusting part, when the abnormal condition or air supply trouble appear in pneumatic actuator, can be convenient drive the piston through rotating the handle and remove, can be convenient the automatic mode or the manual mode that will start the executor economize on fuel, treat that pneumatic automatic control system resumes normal back, change that can be convenient is automatic operation, simultaneously, through setting up the bolt, can be convenient dismantle the mounting panel to dust or ponding in to the cylinder body are cleared up.

Description

Single-action pneumatic actuator

Technical Field

The utility model relates to a pneumatic actuator technical field specifically is a single-action pneumatic actuator.

Background

The pneumatic actuator is an actuating device for opening and closing or adjusting a valve by air pressure, is also called a pneumatic actuating mechanism or a pneumatic device, but is generally called a pneumatic head, and is sometimes provided with certain auxiliary devices, such as a valve positioner and a hand wheel mechanism.

For example, in an authorized patent (publication No. CN 206754558U), chinese utility model patent whose publication date is 2017-12-15, a single-acting normally-closed pneumatic actuator is disclosed, when an abnormal condition or an air source fault occurs in an operating system of a pneumatic device, the actuator core is driven only by a conversion handle, the pneumatic drive execution state is converted into a manual drive, a rotation hand wheel drives a small spiral bevel gear to rotate, the small spiral bevel gear drives a large spiral bevel gear to rotate, the large spiral bevel gear drives a piston and an actuating rod to act, after a pneumatic automatic control system is recovered to be normal, the pneumatic operation can be switched to the pneumatic operation again only by the conversion handle, so that pneumatic and manual alternative use is realized, the structure is simple, and the operation is convenient.

Among the above-mentioned technical scheme, its inside part is comparatively complicated, only needs to use comparatively simple part can replace the operation in the above-mentioned embodiment, and mounting panel and cylinder body are fixed moreover, are unfavorable for the later stage to be dismantled, when leading to produce laying dust or ponding in the cylinder body, are not convenient for carry out the problem of clearing up laying dust or ponding, in view of this, provide a single-action pneumatic actuator in order to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a single-action pneumatic actuator possesses the advantage of being convenient for to carry out the clearance to laying dust or ponding in the cylinder body, has solved the problem of being not convenient for to carry out the clearance to laying dust or ponding in the cylinder body.

In order to achieve the above object, the utility model provides a following technical scheme: a single-action pneumatic actuator comprises a cylinder body, wherein four bolts are arranged at the right end of the cylinder body, a mounting plate is fixed at the right end of the cylinder body through the bolts, a sealing ring is connected to the inner peripheral wall of the cylinder body in a sliding manner, a piston is fixed on the inner peripheral wall of the sealing ring, a connecting rod is fixed at the left end of the piston, an adjusting assembly is arranged at the left end of the connecting rod, a spring is fixed at the left end of the piston, and a baffle is fixed at one end, away from the piston, of the spring;

the adjusting component comprises a threaded rod fixed with the left end of the connecting rod, the left end of the threaded rod penetrates through and extends to the left end of the cylinder body and is in threaded connection with the left end of the cylinder body, a handle is fixed at the left end of the threaded rod, a nut is in threaded connection with the outer surface of the threaded rod, and rotating handles are fixed at the upper end and the lower end of the nut.

Furthermore, the left end of baffle is seted up and is run through to the slide opening of its right-hand member, slide opening and threaded rod sliding connection.

Further, the direction of the threads formed on the inner peripheral wall of the nut is opposite to the direction of the threads on the outer surface of the threaded rod.

Furthermore, the left end of the baffle is fixed with the left end of the inner cavity of the cylinder body, and the handle is a star-shaped handle.

Further, threaded rod and connecting rod all cup joint with the spring mutually, the right-hand member of nut is laminated with the left end of cylinder body.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this single-action pneumatic actuator, through setting up adjusting part, when abnormal condition or air supply trouble appear in pneumatic actuator, can be convenient drive the piston through rotating the handle and remove, can be convenient the automatic mode or the manual mode that will start the executor economize on fuel, treat that pneumatic automatic control system resumes normal back, change that can be convenient is automatic operation, simultaneously, through setting up the bolt, can be convenient dismantle the mounting panel to dust or ponding in to the cylinder body are cleared up.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the adjusting assembly of the present invention;

fig. 3 is a schematic side view of the piston and the sealing ring according to the present invention.

In the figure: 1 cylinder body, 2 bolts, 3 mounting plates, 4 sealing rings, 5 pistons, 6 connecting rods, 7 adjusting components, 701 threaded rods, 702 handles, 703 nuts, 704 rotating handles, 8 springs and 9 baffle plates.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 work belong to the protection scope of the present invention.

Referring to fig. 1-3, in the embodiment, the single-acting pneumatic actuator includes a cylinder body 1, four bolts 2 are disposed at a right end of the cylinder body 1, a mounting plate 3 is fixed at the right end of the cylinder body 1 through the bolts 2, a sealing ring 4 is slidably connected to an inner circumferential wall of the cylinder body 1, a piston 5 is fixed to the inner circumferential wall of the sealing ring 4, a connecting rod 6 is fixed to a left end of the piston 5, an adjusting assembly 7 is disposed at a left end of the connecting rod 6, a spring 8 is fixed to the left end of the piston 5, a baffle 9 is fixed to one end of the spring 8, which is far away from the piston 5, a left end of the baffle 9 is fixed to a left end of an inner cavity of the cylinder body 1, and a sliding hole penetrating through the baffle 9 is disposed at a left end of the baffle 9.

Adjusting part 7 includes the fixed threaded rod 701 with connecting rod 6 left end, threaded rod 701 and connecting rod 6 all cup joint with spring 8 mutually, slide opening and threaded rod 701 sliding connection, the left end of threaded rod 701 runs through and extends to the left end of cylinder body 1 and rather than threaded connection, the left end of threaded rod 701 is fixed with handle 702, handle 702 is the star handle, the surface threaded connection of threaded rod 701 has nut 703, the right-hand member of nut 703 and the left end laminating of cylinder body 1, the screw direction that the internal perisporium of nut 703 was seted up is opposite with the screw direction of threaded rod 701 surface, be used for threaded rod 701 to remove under the effect of nut 703, the upper and lower both ends of nut 703 all are fixed with and change handle 704.

In order to improve the sealing performance of the piston 5, a seal ring 4 is fixed on the outer surface of the piston 5, and the seal ring 4 is connected with the inner peripheral wall of the cylinder 1 in a sliding mode.

In this embodiment, the handle 702 is rotated to drive the threaded rod 701 to rotate, and the threaded rod 701 is in threaded connection with the cylinder 1, so that the piston 5 is driven to move left and right, and the purpose of adjusting the piston 5 is achieved.

It should be noted that in this embodiment, only the pneumatic actuator is innovated, and the starting actuator is an existing structure, and details of an internal structure of the starting actuator, a working principle thereof, and a connection manner thereof are not described again in this embodiment.

The working principle of the embodiment is as follows:

when the position of the piston 5 needs to be adjusted, firstly, the handle 702 is rotated in the forward direction, the handle 702 is further rotated to drive the threaded rod 701 to rotate, when the threaded rod 701 rotates, the nut 703 is driven to rotate through the rotating handle 704 in the reverse direction, and in the process of reverse rotation of the nut 703, the threaded rod 701 is driven to move rightwards in the process of reverse rotation of the nut 703, so that the purpose of adjusting the piston 5 is achieved, and the problem that the piston 5 is inconvenient to close timely when an abnormal condition or an air source fault occurs in an operating system of a pneumatic device is avoided, and a series of safety problems are caused.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A single-acting pneumatic actuator comprising a cylinder (1), characterized in that: the cylinder is characterized in that four bolts (2) are arranged at the right end of the cylinder body (1), a mounting plate (3) is fixed at the right end of the cylinder body (1) through the bolts (2), a sealing ring (4) is connected to the inner peripheral wall of the cylinder body (1) in a sliding manner, a piston (5) is fixed to the inner peripheral wall of the sealing ring (4), a connecting rod (6) is fixed to the left end of the piston (5), an adjusting assembly (7) is arranged at the left end of the connecting rod (6), a spring (8) is fixed to the left end of the piston (5), and a baffle (9) is fixed to one end, far away from the piston (5), of the spring (8);

the adjusting component (7) comprises a threaded rod (701) fixed with the left end of the connecting rod (6), the left end of the threaded rod (701) penetrates through and extends to the left end of the cylinder body (1) and is in threaded connection with the left end of the cylinder body, a handle (702) is fixed at the left end of the threaded rod (701), a nut (703) is in threaded connection with the outer surface of the threaded rod (701), and a rotating handle (704) is fixed at each of the upper end and the lower end of the nut (703).

2. A single-acting pneumatic actuator as claimed in claim 1, wherein: the left end of the baffle (9) is provided with a sliding hole penetrating to the right end of the baffle, and the sliding hole is connected with the threaded rod (701) in a sliding mode.

3. A single-acting pneumatic actuator as claimed in claim 1, wherein: the thread direction of the inner peripheral wall of the nut (703) is opposite to the thread direction of the outer surface of the threaded rod (701).

4. A single-acting pneumatic actuator as claimed in claim 1, wherein: the left end of the baffle (9) is fixed with the left end of the inner cavity of the cylinder body (1), and the handle (702) is a star-shaped handle.

5. A single-acting pneumatic actuator as claimed in claim 1, wherein: threaded rod (701) and connecting rod (6) all cup joint with spring (8) mutually, the right-hand member of nut (703) is laminated with the left end of cylinder body (1).