CN202629288U

CN202629288U - Single-action actuating mechanism of adjusting valve

Info

Publication number: CN202629288U
Application number: CN 201220329291
Authority: CN
Inventors: 柳作; 高峰; 李云勉; 徐昌盛
Original assignee: CHONGQING SHANNENG INSTRUMENT Co Ltd
Current assignee: CHONGQING SHANNENG INSTRUMENT Co Ltd
Priority date: 2012-07-09
Filing date: 2012-07-09
Publication date: 2012-12-26
Anticipated expiration: 2022-07-09

Abstract

The utility model discloses a single-action actuating mechanism of an adjusting valve. The single-action actuating mechanism is formed by connecting cylinders, a hollow box body and long cylinders, wherein two ends of the box body are respectively connected with the cylinders and the long cylinders; a cylinder piston and a push rod are arranged in a cavity body of each cylinder, one end of the push rod is connected with the cylinder piston, the push rod penetrates through a hollow cavity of the box body, the other end of the push rod is connected with a piston arranged in a hollow cavity of each long cylinder, and a shifting fork arranged on the box body is connected with the push rod which drives the shifting fork to rotate or swing when the push rod moves laterally; and a reset spring is arranged in the hollow cavity of each long cylinder, and one end of the reset spring is contacted with the piston or arranged on the piston. The single-action actuating mechanism of the adjusting valve resets fast under the effect of the spring when the pistons of the single-action cylinder moves in unidirectional mode, movement of sensitivity of the single-action actuating mechanism is high, reliability of the actuating mechanism is improved; and the single-action actuating mechanism is suitable for the requirements for gas and liquid (fluid) conveying of a large-flow pipeline.

Description

The single-acting actuator of modulating valve

Technical field

The utility model relates to the single-acting actuator of actuator, especially modulating valve of the pipeline modulating valve of a kind of gas, liquid (fluid).

Background technique

In the conveyance conduit of gas, liquid (fluid); A plurality of valves all will be set to be controlled; The unlatching of controlling plumbing fixtures, close or the size of opening degree etc.; To produce corresponding action, the degree that makes pipeline open and control unlatching is as required perhaps closed, and makes gas, liquid (fluid) etc. pass through control valve.The modulating valve of existing technology and actuator thereof, complex structure mostly, the sealing configuration component of employing are more, sealing effect is undesirable, has leakage phenomenon; And action sensitivity is not high, and reliability is lower, has perhaps reduced the reliability of actuator; Also have, the installation of actuator, dismounting are inconvenient, cumbersome, can not adapt to the needs of large flow pipe road conveying gas, liquid (fluid) etc.

Summary of the invention

The utility model is to existing technology modulating valve complex structure, the not high above-mentioned deficiency of sealing effect action sensitivity undesirable, actuator, provide a kind of simple in structure, action sensitivity is higher, the single-acting actuator that satisfies the modulating valve of large flow pipe road fed sheet of a media needs.

The technological scheme of the utility model: the single-acting actuator of modulating valve, comprise body, it is characterized in that: said body is connected and composed by the casing and the long cylinder of cylinder, hollow, and the two ends of casing are connected with long cylinder with cylinder respectively; In the cavity of cylinder; Be provided with cylinder piston and push rod, an end of push rod is connected with cylinder piston, and push rod passes the cavity of casing; The other end piston interior with being arranged on long cylinder cavity is connected; The shift fork that is arranged on the casing is connected with push rod, during the push rod move left and right, drives shift fork and rotates or swing; In long cylinder cavity, be provided with Returnning spring, an end of Returnning spring contacts with piston, or is arranged on the piston.

Further during characteristic: in the cavity of long cylinder, spring seat is set, spring seat is divided into left and right two groups with described Returnning spring.

Returnning spring is that the spring of two kinds of models is formed, and is arranged alternately each other.

In the cavity of long cylinder, extension rod is set, an end of extension rod is connected on the piston, and the other end extends along the cavity of long cylinder, passes the middle cavity of spring seat, contacts with left and right two groups of Returnning springs respectively.

The single-acting actuator of the modulating valve of the utility model with respect to existing technology, has following characteristics:

1, the actuator of the utility model comprises single-acting cylinder and Returnning spring, the piston of single-acting cylinder is unidirectional move after, under spring action, reset fast, its action sensitivity is higher, and the reliability of actuator is provided.

2, the needs that adapt to large flow pipe road conveying gas, liquid (fluid) etc.

3, have good buffer function, make piston, push rod can steadily move, steadily reset.

Description of drawings

Fig. 1 is the utility model modulating valve structure sectional view;

Fig. 2 is the utility model modulating valve structure plan view (analysing and observe).

Embodiment

In Fig. 1,2, the single-acting actuator of the modulating valve of the utility model comprises body 1, and said body 1 is connected and composed by the casing 3 and the long cylinder 4 of cylinder 2, hollow, and casing 3 is between cylinder 2 and long cylinder 4, and its two ends are connected with long cylinder 4 with cylinder 2 respectively; In the cavity of cylinder 2, be provided with cylinder piston 5 and push rod 6, an end of push rod 6 is connected with cylinder piston 5; Push rod 6 passes the cavity of casing 3; The other end of push rod 6 piston 7 interior with being arranged on long cylinder 4 cavitys is connected, and the shift fork 8 that is arranged on the casing 3 is connected with push rod 6, during push rod 6 move left and right; Drive shift fork 8 and rotate (or swing); Thereby shift fork 8 drives the valve rod of the modulating valve that is attached thereto and rotates or (moving), drives valve core rotation or (moving), generation open or close valve pocket about.

In long cylinder 4 cavitys, be provided with Returnning spring 9, an end of Returnning spring 9 contacts with piston 7, or is arranged on the piston 7, and piston 7 is in push rod 6 effect when the left-hand in scheming moves down, compression reseting spring 9; After the thrust gas disappearance that cylinder piston 5 receives, Returnning spring 9 resets it for piston 7 acting force of the spring, and piston 7 resets together with push rod 6, cylinder piston 5, the right side motion in figure.

For piston 7 is steadily resetted, Returnning spring 9 is that the spring of two kinds of models is formed, and is arranged alternately each other, and promptly first spring 11 and second spring, 12, the first springs 11 are big springs, and size is big, relevant parameter is bigger; Second spring 12 is a little spring, relative first spring 11, and size is less, relevant parameter is less;

First spring

11 and 12 actings in conjunction of second spring can make piston 7 easy motions on piston 7.

In the cavity of long cylinder 4; Spring seat 13 is set; Spring seat 13 is divided into left and right two groups with described Returnning spring 9, and the two ends of one of the left side group of spring 9 act on respectively on the left side wall and spring seat 13 of long cylinder 4 inner chambers among the figure, and the two ends of one group of spring 9 on the right side act on respectively on spring seat 13 and the piston 7; Left and right two groups of Returnning springs 9 more can play good buffer function, make piston 7 steadily move, steadily reset.

In the cavity of long cylinder 4, extension rod 15 is set, an end of extension rod 15 is connected on the piston 7, and the other end extends along the cavity of long cylinder 4, passes the cavity of spring seat 13 centres, contacts with left and right two groups of Returnning springs 9 respectively.Extension rod 15 cooperates left and right two groups of Returnning springs 9, more can play good buffer function, makes piston 7 steadily move, steadily reset.

Annexation between cylinder 2, casing 3 and long cylinder 4 connect, sealing configuration etc.; The slip cooperating relationship of the slip cooperating relationship of cylinder piston 5 and cylinder 2, piston 7 and long cylinder 4 etc.; Be provided with and the linkage structure of shift fork 8 and the valve rod of modulating valve etc.; All adopt existing technology, do not do further description at this.

Need to prove at last; Above embodiment is only in order to technological scheme but not the restriction technologies scheme of explanation the utility model; Although the claimant specifies the utility model with reference to preferred embodiment, those of ordinary skill in the art should be appreciated that those technological schemes to the utility model make amendment or be equal to replacement; And do not break away from the aim and the scope of present technique scheme, all should be encompassed in the middle of the claim scope of the utility model.

Claims

1. the single-acting actuator of modulating valve; Comprise body (1); It is characterized in that: said body (1) is connected and composed by the casing (3) and the long cylinder (4) of cylinder (2), hollow, and the two ends of casing (3) are connected with long cylinder (4) with cylinder (2) respectively; In the cavity of cylinder (2); Be provided with cylinder piston (5) and push rod (6), an end of push rod (6) is connected with cylinder piston (5), and push rod (6) passes the cavity of casing (3); The other end piston (7) interior with being arranged on long cylinder (4) cavity is connected; The shift fork (8) that is arranged on the casing (3) is connected with push rod (6), during push rod (6) move left and right, drives shift fork (8) and rotates or swing; In long cylinder (4) cavity, be provided with Returnning spring (9), an end of Returnning spring (9) contacts with piston (7), or is arranged on the piston (7).

2. according to the single-acting actuator of the said modulating valve of claim 1, it is characterized in that: in the cavity of long cylinder (4), spring seat (13) is set, spring seat (13) is divided into left and right two groups with described Returnning spring (9).

3. according to the single-acting actuator of claim 1 or 2 said modulating valve, it is characterized in that: Returnning spring (9) is that the spring of two kinds of models is formed, and is arranged alternately each other.

4. according to the single-acting actuator of the said modulating valve of claim 3; It is characterized in that: in the cavity of long cylinder (4); Extension rod (15) is set, and an end of extension rod (15) is connected on the piston (7), and the other end extends along the cavity of long cylinder (4); Pass the middle cavity of spring seat (13), contact with left and right two groups of Returnning springs (9) respectively.