CN215334494U

CN215334494U - Hydraulic actuator for butterfly valve

Info

Publication number: CN215334494U
Application number: CN202121711956.4U
Authority: CN
Inventors: 华峰; 牛壮
Original assignee: Jiangsu Brooke Automation Equipment Co ltd
Current assignee: Tianjin Konian Fluid Control Equipment Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-12-28
Anticipated expiration: 2031-07-26

Abstract

The utility model relates to the technical field of actuators, in particular to a hydraulic actuator for a butterfly valve, which comprises a butterfly valve main body, wherein the top end of the butterfly valve main body is fixedly provided with the hydraulic actuator main body, the hydraulic actuator main body comprises a frame, the top end of the butterfly valve main body is fixedly provided with the frame, a hydraulic cylinder is fixedly arranged in the frame, a hydraulic telescopic rod is fixedly arranged in the hydraulic cylinder, and a valve plate is fixedly arranged at the bottom end of the hydraulic telescopic rod. According to the utility model, the pulling plate is arranged, the pulling plate is pulled outwards and slides on the outer side of the connecting block, when the pulling plate is separated from the connecting block, the connecting block lacks limitation, the connecting block and the second positioning column can be conveniently taken out from the interior of the return spring, then the return spring is taken out from the outer side of the first positioning column, and the purpose of replacing the return spring is achieved, so that the return elastic force of the return spring is as good as before, and the device is in a normal working state.

Description

Hydraulic actuator for butterfly valve

Technical Field

The utility model relates to the technical field of actuators, in particular to a hydraulic actuator for a butterfly valve.

Background

The butterfly valve is a regulating valve with simple structure, and can be used for on-off control of low-pressure pipeline media, the butterfly valve refers to a closing part which is a disc, the valve can be used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, an actuator is usually connected to the upper end of the butterfly valve for on-off control of the butterfly valve, the conventional common actuator is electric, hydraulic, pneumatic or manual, and the butterfly valve is used in the flowing liquid, when the existing actuator is closed to drive the butterfly valve to be closed, the butterfly valve is closed by the elastic force of the return spring, however, the elastic force of the return spring is gradually reduced due to the long-term use of the return spring, therefore, the butterfly valve is not tightly closed, and the normal use of the device is influenced, and therefore a hydraulic actuator for the butterfly valve is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic actuator for a butterfly valve, which aims to solve the problems that the hydraulic actuator is provided in the background art, the butterfly valve is generally used in flowing liquid, so that the actuator is also in a liquid environment, the sealing performance of the actuator to the outside liquid is very good, and the liquid is immersed to influence the operation of the actuator.

In order to achieve the purpose, the utility model provides the following technical scheme: a hydraulic actuator for a butterfly valve comprises a butterfly valve body, wherein a hydraulic actuator body is fixedly mounted at the top end of the butterfly valve body and comprises a frame, a frame is fixedly mounted at the top end of the butterfly valve body, a hydraulic cylinder is fixedly mounted inside the frame, a hydraulic telescopic rod is fixedly mounted inside the hydraulic cylinder, a valve block is fixedly mounted at the bottom end of the hydraulic telescopic rod, a replacing mechanism is fixedly mounted outside the hydraulic telescopic rod and comprises a connecting plate, a connecting plate is fixedly mounted outside the hydraulic telescopic rod, a first positioning column is fixedly mounted at the top end of the connecting plate, a reset spring is sleeved outside the first positioning column, a second positioning column is inserted inside the reset spring, a connecting block is fixedly mounted at the top end of the second positioning column, a pulling plate is sleeved outside the connecting block and inserted inside the frame, the outer side of the frame is fixedly provided with a positioning mechanism, the positioning mechanism is inserted in the pulling plate, and the outer side of the valve plate is fixedly provided with a hollow plate.

Preferably, the positioning mechanism comprises a fixing plate, a fixing plate is fixedly mounted on the outer side of the frame, an insertion rod is inserted into the fixing plate, and a telescopic spring is sleeved on the outer side of the insertion rod.

Preferably, one end of the telescopic spring is fixedly installed at the bottom end of the fixing plate, and the other end of the telescopic spring is fixedly installed at the outer side of the inserted rod.

Preferably, the outer side of the connecting plate is fixedly provided with a limiting block, and the inside of the frame is provided with a sliding groove matched with the limiting block.

Preferably, the outer side of the connecting block is fixedly provided with a sliding block, the pull plate is internally provided with a sliding groove matched with the sliding block, the pull plate is internally provided with a groove, and the groove is of a circular arc-shaped structure.

Preferably, a sealing gasket is inserted into the hollow plate, and the outer side of the sealing gasket is abutted against the inner wall of the butterfly valve main body.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the pulling plate is arranged, the pulling plate is pulled outwards and slides outside the connecting block, when the pulling plate is separated from the connecting block, the connecting block is lack of limit, the connecting block and the second positioning column can be conveniently taken out from the interior of the reset spring, then the reset spring is taken out from the outer side of the first positioning column, and the reset spring is replaced, so that the reset elasticity of the reset spring is normal, and the device is in a normal working state;

(2) insert the inside of establishing at the arm-tie when the inserted bar, thereby it is spacing to it, make reset spring be in normal operating condition's purpose, because the outside of connecting plate is provided with the stopper, prevent that hydraulic telescoping rod from driving the connecting plate and rotate, thereby lead to reset spring to drop, thereby influence reset spring's normal operating condition, because the outside fixed mounting of connecting block has the slider, and the slider plays limiting displacement to the connecting block, prevent that reset spring's reciprocal elasticity is too big, lead to the connecting block to break away from inside the arm-tie, thereby influence reset spring's operating condition.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

FIG. 2 is a schematic sectional elevation view of the structure of the present invention;

FIG. 3 is an enlarged view of the structure A in FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of B of FIG. 2 according to the present invention;

fig. 5 is a schematic side sectional view of the structure of the connecting block and the pulling plate of the utility model.

In the figure: 1. a butterfly valve body; 2. a hydraulic actuator body; 210. a frame; 220. a hydraulic cylinder; 230. a hydraulic telescopic rod; 240. a valve plate; 3. a mechanism is replaced; 310. a connecting plate; 320. a first positioning post; 330. a return spring; 340. a second positioning column; 350. connecting blocks; 360. pulling a plate; 4. a positioning mechanism; 410. a fixing plate; 420. inserting a rod; 430. a tension spring; 5. hollow slab.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention is shown: a hydraulic actuator for a butterfly valve comprises a butterfly valve body 1, a hydraulic actuator body 2 is fixedly installed at the top end of the butterfly valve body 1, the hydraulic actuator body 2 comprises a frame 210, the frame 210 is fixedly installed at the top end of the butterfly valve body 1, a hydraulic cylinder 220 is fixedly installed inside the frame 210, a hydraulic telescopic rod 230 is fixedly installed inside the hydraulic cylinder 220, a valve plate 240 is fixedly installed at the bottom end of the hydraulic telescopic rod 230, a replacing mechanism 3 is fixedly installed on the outer side of the hydraulic telescopic rod 230, the replacing mechanism 3 comprises a connecting plate 310, a connecting plate 310 is fixedly installed on the outer side of the hydraulic telescopic rod 230, a first positioning column 320 is fixedly installed at the top end of the connecting plate 310, a reset spring 330 is sleeved on the outer side of the first positioning column 320, a second positioning column 340 is inserted inside the reset spring 330, a connecting block 350 is fixedly installed at the top end of the second positioning column 340, and a pull plate 360 is sleeved on the outer side of the connecting block 350, the pull plate 360 is inserted into the frame 210, the positioning mechanism 4 is fixedly installed on the outer side of the frame 210, the positioning mechanism 4 is inserted into the pull plate 360, and the hollow plate 5 is fixedly installed on the outer side of the valve plate 240;

by arranging the positioning mechanism 4, when the positioning mechanism 4 is separated from the interior of the pulling plate 360, the pulling plate 360 lacks limitation, the pulling plate 360 is pulled outwards, the pulling plate 360 slides outside the connecting block 350, when the pulling plate 360 is separated from the connecting block 350, the connecting block 350 lacks limitation, the connecting block 350 and the second positioning column 340 can be conveniently taken out from the interior of the return spring 330, then the return spring 330 is taken out from the outer side of the first positioning column 320, and the return spring 330 is replaced, so that the return elastic force of the return spring 330 is caused to be normal, and the device is in a normal working state;

further, the positioning mechanism 4 includes a fixing plate 410, the fixing plate 410 is fixedly installed on the outer side of the frame 210, an insertion rod 420 is inserted into the fixing plate 410, an extension spring 430 is sleeved on the outer side of the insertion rod 420, one end of the extension spring 430 is fixedly installed at the bottom end of the fixing plate 410, and the other end of the extension spring 430 is fixedly installed on the outer side of the insertion rod 420, by providing the extension spring 430, since the extension spring 430 is fixedly installed between the fixing plate 410 and the insertion rod 420, the insertion rod 420 has a certain elastic force, when the insertion rod 420 is inserted into the pull plate 360, the insertion rod 420 is limited, and the return spring 330 is in a normal working state;

furthermore, a limiting block is fixedly installed on the outer side of the connecting plate 310, a sliding groove matched with the limiting block is formed in the frame 210, and the connecting plate 310 is arranged in the structure, so that the hydraulic telescopic rod 230 is prevented from driving the connecting plate 310 to rotate due to the fact that the limiting block is arranged on the outer side of the connecting plate 310, the reset spring 330 is prevented from falling off, and the normal working state of the reset spring 330 is influenced;

furthermore, a sliding block is fixedly installed on the outer side of the connecting block 350, a sliding groove matched with the sliding block is formed in the pulling plate 360, a groove is formed in the pulling plate 360, the shape of the groove is of an arc-shaped structure, the connecting block 350 is arranged in the structure, the sliding block is fixedly installed on the outer side of the connecting block 350 and has a limiting effect on the connecting block 350, the problem that the connecting block 350 is separated from the inner part of the pulling plate 360 due to the fact that reciprocating elasticity of the reset spring 330 is too large is solved, and the pulling plate 360 can be pulled outwards conveniently through the arc-shaped groove formed in the pulling plate 360;

further, the inside of hollow core slab 5 is inserted and is equipped with sealed the pad, and the outside of sealed pad is inconsistent with the inner wall of butterfly valve main part 1, and this structure is through setting up hollow core slab 5, because sealed pad is inserted in the inside of hollow core slab 5, when valve block 240 downshifts inserts and establishes the inside of butterfly valve main part 1, and hollow core slab 5 follows valve block 240 downshifts, the inner wall that hollow core slab 5 drove sealed butterfly valve main part 1 offsets to improve the leakproofness between valve block 240 and the butterfly valve main part 1.

Claims

1. The utility model provides a butterfly valve is with executor that surges which characterized in that: the hydraulic actuator comprises a butterfly valve main body (1), a hydraulic actuator main body (2) is fixedly mounted at the top end of the butterfly valve main body (1), the hydraulic actuator main body (2) comprises a frame (210), the frame (210) is fixedly mounted at the top end of the butterfly valve main body (1), a hydraulic cylinder (220) is fixedly mounted inside the frame (210), a hydraulic telescopic rod (230) is fixedly mounted inside the hydraulic cylinder (220), a valve plate (240) is fixedly mounted at the bottom end of the hydraulic telescopic rod (230), a replacing mechanism (3) is fixedly mounted on the outer side of the hydraulic telescopic rod (230), the replacing mechanism (3) comprises a connecting plate (310), the connecting plate (310) is fixedly mounted on the outer side of the hydraulic telescopic rod (230), a first positioning column (320) is fixedly mounted at the top end of the connecting plate (310), and a reset spring (330) is sleeved on the outer side of the first positioning column (320), and the inside of reset spring (330) is inserted and is equipped with second reference column (340), the top fixed mounting of second reference column (340) has connecting block (350), and the outside cover of connecting block (350) is equipped with arm-tie (360), arm-tie (360) are inserted and are established the inside of frame (210), the outside fixed mounting of frame (210) has positioning mechanism (4), and positioning mechanism (4) insert and establish the inside of arm-tie (360), the outside fixed mounting of valve block (240) has hollow plate (5).

2. The hydraulic actuator for a butterfly valve according to claim 1, wherein: positioning mechanism (4) are including fixed plate (410), the outside fixed mounting of frame (210) has fixed plate (410), and the inside of fixed plate (410) is inserted and is equipped with inserted bar (420), the outside cover of inserted bar (420) is equipped with expanding spring (430).

3. The hydraulic actuator for a butterfly valve according to claim 2, wherein: one end of the telescopic spring (430) is fixedly arranged at the bottom end of the fixing plate (410), and the other end of the telescopic spring (430) is fixedly arranged at the outer side of the inserted rod (420).

4. The hydraulic actuator for a butterfly valve according to claim 1, wherein: the outside fixed mounting of connecting plate (310) has the stopper, the inside of frame (210) is seted up the spout with stopper looks adaptation.

5. The hydraulic actuator for a butterfly valve according to claim 1, wherein: the outer side of the connecting block (350) is fixedly provided with a sliding block, a sliding groove matched with the sliding block is formed in the pull plate (360), a groove is formed in the pull plate (360), and the shape of the groove is of a circular arc-shaped structure.

6. The hydraulic actuator for a butterfly valve according to claim 1, wherein: a sealing gasket is inserted into the hollow plate (5), and the outer side of the sealing gasket is abutted to the inner wall of the butterfly valve main body (1).