CN220435450U

CN220435450U - Sealing device for electric valve

Info

Publication number: CN220435450U
Application number: CN202321387482.1U
Authority: CN
Inventors: 董学良
Original assignee: Tianjin Borris Valve Automatic Control Equipment Co ltd
Current assignee: Tianjin Borris Valve Automatic Control Equipment Co ltd
Priority date: 2023-06-02
Filing date: 2023-06-02
Publication date: 2024-02-02
Anticipated expiration: 2033-06-02

Abstract

The utility model discloses a sealing device for an electric valve, which relates to the technical field of valves and comprises a valve plate and an annular air bag, wherein an annular groove is formed in the side wall of the valve plate, the annular air bag is fixedly arranged in the annular groove, a first cavity is formed in the middle of the valve plate, connecting pipes are fixedly arranged at two ends of the first cavity, and the other end of each connecting pipe is communicated with the annular air bag; the two sides of the inner part of the first cavity are provided with pistons in a sliding manner, the two sides of the middle end of the first cavity are provided with grooves, the inner part of each groove is arranged on a sliding plate in a sliding manner, and one side of each sliding plate is provided with a pushing mechanism for driving the two pistons to move; and a limiting mechanism for limiting the sliding plate is arranged in the groove. The utility model can keep the good sealing performance of the electric valve, and has convenient operation, time saving and labor saving.

Description

Sealing device for electric valve

Technical Field

The utility model relates to the technical field of valves, in particular to a sealing device for an electric valve.

Background

In short, the electric valve is controlled by an electric actuator, so that the valve is opened and closed, and the electric valve is provided with a sealing device for improving the sealing performance of the valve plate.

The traditional sealing device for the electric valve is usually a simple sealing ring, and the sealing ring is easy to be worn in the opening and closing process of the long-term valve plate, so that the sealing performance is reduced, and the sealing ring needs to be detached and replaced after being worn a little, so that the sealing device is very complicated.

Disclosure of Invention

The present utility model has been made in view of the above-described problems with the conventional sealing device for an electrically operated valve.

Therefore, the utility model aims to provide the sealing device for the electric valve, which solves the problems that the sealing device for the electric valve is usually a simple sealing ring in the prior art, the sealing ring is easy to wear in the opening and closing process of a long-term valve plate, the sealing performance is reduced, and the sealing ring needs to be disassembled and replaced after being worn a little, and the sealing device is very complicated.

In order to achieve the above object, the present utility model provides the following technical solutions:

the sealing device for the electric valve comprises a valve plate and an annular air bag, wherein an annular groove is formed in the side wall of the valve plate, the annular air bag is fixedly arranged in the annular groove, a first cavity is formed in the middle of the valve plate, connecting pipes are fixedly arranged at two ends of the first cavity, and the other ends of the connecting pipes are communicated with the annular air bag;

the two sides of the inner part of the first cavity are provided with pistons in a sliding manner, the two sides of the middle end of the first cavity are provided with grooves, the inner part of each groove is arranged on a sliding plate in a sliding manner, and one side of each sliding plate is provided with a pushing mechanism for driving the two pistons to move;

and a limiting mechanism for limiting the sliding plate is arranged in the groove.

Preferably, the pushing mechanism comprises two pushing rods, the two pushing rods are arranged at two ends of one side of the cavity close to the sliding plate, connecting blocks are connected at two ends of the pushing rods through shaft pins in a rotating mode, one sides of the connecting blocks are fixedly connected with one ends of the corresponding pistons and one ends of the pushing plates respectively, and the pushing mechanism is convenient for pushing the two pistons to push gas in the first cavity into the annular air bag.

Preferably, the stop gear includes fixed block and movable block, the both sides inner wall of recess is all fixed and is provided with a plurality of fixed blocks, the second cavity has all been seted up at the both ends of slide, the inside slip of second cavity is provided with the dog, the movable block is fixed to be set up in one side of dog, the one end of movable block extends to the outside of second cavity, one side of movable block is inconsistent with one side that the dog that corresponds is close to first cavity, fixedly connected with spring between one side that the dog was kept away from the movable block and the inner wall of second cavity, and the convenience is spacing the slide after adjusting.

Preferably, two sliding rods are fixedly arranged in the second cavity, and two ends of the stop block are movably sleeved with the corresponding sliding rods, so that the stop block can stably slide.

Preferably, the inner wall of the groove is fixedly provided with a square rod, and the sliding plate is movably sleeved with the square rod, so that the sliding plate can stably slide.

Preferably, one end of the square rod is fixedly provided with an anti-falling block, so that the sliding plate is prevented from sliding off the rod wall of the square rod as much as possible.

Preferably, the fixed block is far away from one side of the first cavity and one side of the movable block, which is close to the first cavity, is provided with inclined planes, and when the sliding plate is conveniently pushed towards the direction of the first cavity, the fixed block can squeeze the movable block into the second cavity, namely, the sliding plate can be pushed smoothly.

In the technical scheme, the utility model has the technical effects and advantages that:

1. according to the utility model, the two sliding plates are pushed towards the first cavity, namely the plurality of pushing rods push the two pistons towards two sides, namely the gas in the first cavity can be pushed into the annular air bag, so that the annular air bag is expanded, and the sealing performance of the valve plate can be improved.

2. According to the utility model, after the sliding plate is pushed to a proper position, the movable block is in contact with the fixed block, so that the sliding plate can be limited, the sliding plate cannot move in a direction away from the first cavity, and the piston can be limited.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

Fig. 1 is a schematic structural diagram of a sealing device for an electric valve according to the present utility model;

FIG. 2 is a schematic view of the internal structure of FIG. 1;

FIG. 3 is an enlarged schematic view of the portion A of FIG. 2;

fig. 4 is an enlarged schematic view of the structure of the part B in fig. 3.

Reference numerals illustrate:

1. a valve plate; 2. an annular air bag; 3. a connecting pipe; 4. a piston; 5. square rods; 6. a slide plate; 7. a push rod; 8. a connecting block; 9. a shaft pin; 10. a fixed block; 11. a stop block; 12. a movable block; 13. a slide bar; 14. a spring; 15. and (5) preventing the block from falling off.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The embodiment of the utility model discloses a sealing device for an electric valve.

Referring to fig. 1-4, a sealing device for an electric valve comprises a valve plate 1 and an annular air bag 2, wherein an annular groove is formed in the side wall of the valve plate 1, the annular air bag 2 is fixedly arranged in the annular groove, a first cavity is formed in the middle of the valve plate 1, connecting pipes 3 are fixedly arranged at two ends of the first cavity, and the other ends of the connecting pipes 3 are communicated with the annular air bag 2;

the inside both sides of first cavity all slide and are provided with piston 4, and the middle-end both sides of first cavity all set up flutedly, and the inside slip of recess sets up in slide 6, and the inner wall of recess is fixed to be provided with square pole 5, and slide 6 cup joints with the activity of square pole 5 for slide 6 can be stable slip, and the fixed anti-drop piece 15 that is provided with of one end of square pole 5 prevents slide 6 from the pole wall slippage of square pole 5 as far as possible.

In order to push two pistons 4 at the same time, referring to fig. 1-4, a pushing mechanism for driving the two pistons 4 to move is arranged on one side of a sliding plate 6, the pushing mechanism comprises two push rods 7, the two push rods 7 are arranged at two ends of one side of a cavity, close to the sliding plate 6, of the sliding plate 6, two ends of each push rod 7 are respectively connected with a connecting block 8 through a shaft pin 9 in a rotating way, and one sides of a plurality of connecting blocks 8 are respectively fixedly connected with one ends of the corresponding pistons 4 and push plates;

pushing the two sliding plates 6 towards the first cavity direction, i.e. pushing the two pistons 4 to both sides by the plurality of pushing rods 7, i.e. pushing the gas in the first cavity into the annular air bag 2, enables the annular air bag 2 to expand, i.e. improving the sealing performance of the valve plate 1.

In order to limit the slide plate 6 with the adjusted position, referring to fig. 1-4, a limiting mechanism for limiting the slide plate 6 is arranged in the groove, the limiting mechanism comprises a fixed block 10 and a movable block 12, a plurality of fixed blocks 10 are fixedly arranged on the inner walls of two sides of the groove, a second cavity is formed in two ends of the slide plate 6, a stop block 11 is slidably arranged in the second cavity, the movable block 12 is fixedly arranged on one side of the stop block 11, one end of the movable block 12 extends to the outer side of the second cavity, one side of the movable block 12 is abutted against one side of the corresponding stop block 11, which is close to the first cavity, a spring 14 is fixedly connected between one side of the stop block 11, which is far away from the movable block 12, and the inner wall of the second cavity, two slide bars 13 are fixedly arranged in the second cavity, two ends of the stop block 11 are movably sleeved with the corresponding slide bars 13, so that the stop block 11 can stably slide, and when the slide plate 6 is pushed to the first cavity, one side of the fixed block 10, which is far away from the first cavity, and one side of the movable block 12, which is close to the first cavity, are provided with inclined surfaces, the movable block 12 can be pushed smoothly, namely the slide plate 6;

after the slide plate 6 is pushed to a proper position, the movable block 12 is in contact with the fixed block 10, so that the slide plate 6 can be limited, and the slide plate 6 can not move in a direction away from the first cavity, namely, the piston 4 can be limited.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The sealing device for the electric valve comprises a valve plate (1) and an annular air bag (2), and is characterized in that an annular groove is formed in the side wall of the valve plate (1), the annular air bag (2) is fixedly arranged in the annular groove, a first cavity is formed in the middle of the valve plate (1), connecting pipes (3) are fixedly arranged at two ends of the first cavity, and the other ends of the connecting pipes (3) are communicated with the annular air bag (2);

the two sides of the inner part of the first cavity are provided with pistons (4) in a sliding manner, the two sides of the middle end of the first cavity are provided with grooves, the inner part of each groove is arranged on a sliding plate (6) in a sliding manner, and one side of each sliding plate (6) is provided with a pushing mechanism for driving the two pistons (4) to move;

and a limiting mechanism for limiting the sliding plate (6) is arranged in the groove.

2. The sealing device for the electric valve according to claim 1, wherein the pushing mechanism comprises two pushing rods (7), the two pushing rods (7) are arranged at two ends of one side of the cavity, close to the sliding plate (6), of the sliding plate, two ends of each pushing rod (7) are respectively connected with a connecting block (8) through a shaft pin (9) in a rotating mode, and one sides of the connecting blocks (8) are respectively fixedly connected with one ends of the corresponding piston (4) and one end of the pushing plate.

3. The sealing device for the electric valve according to claim 1, characterized in that the limiting mechanism comprises a fixed block (10) and a movable block (12), a plurality of fixed blocks (10) are fixedly arranged on the inner walls of two sides of the groove, a second cavity is formed in two ends of the sliding plate (6), a stop block (11) is slidably arranged in the second cavity, the movable block (12) is fixedly arranged on one side of the stop block (11), one end of the movable block (12) extends to the outer side of the second cavity, one side of the movable block (12) is abutted against one side, close to the first cavity, of the corresponding stop block (11), and a spring (14) is fixedly connected between one side, far away from the movable block (12), of the stop block (11) and the inner wall of the second cavity.

4. A sealing device for an electrically operated valve according to claim 3, wherein two sliding rods (13) are fixedly arranged in the second cavity, and both ends of the stop block (11) are movably sleeved with the corresponding sliding rods (13).

5. A sealing device for an electric valve according to claim 3, wherein the inner wall of the groove is fixedly provided with a square rod (5), and the sliding plate (6) is movably sleeved with the square rod (5).

6. The sealing device for an electrically operated valve according to claim 5, wherein one end of the square rod (5) is fixedly provided with an anti-drop block (15).

7. A sealing device for an electrically operated valve according to claim 3, wherein the fixed block (10) is provided with inclined surfaces on one side thereof away from the first cavity and on one side thereof close to the first cavity by the movable block (12).