CN219774978U

CN219774978U - Valve rod sealing structure of butterfly valve

Info

Publication number: CN219774978U
Application number: CN202321150178.5U
Authority: CN
Inventors: 巫文安; 王碧春
Original assignee: Fujian Wilke Valve Manufacturing Co ltd
Current assignee: Fujian Wilke Valve Manufacturing Co ltd
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-09-29
Anticipated expiration: 2033-05-12

Abstract

The utility model discloses a valve rod sealing structure of a butterfly valve, which comprises a butterfly valve body, wherein a rotating bearing is fixedly connected to the bottom of an inner cavity of the butterfly valve body, a valve rod body is fixedly connected to the inner wall of the rotating bearing, a sealing hard pad is arranged at the bottom of the inner cavity of the butterfly valve body, a sealing soft pad is arranged at the top of the sealing hard pad, a first spring is arranged at the top of the sealing soft pad, a pressing block is arranged at the top of the first spring, a screwing block is fixedly connected to the top of the pressing block, and a limiting block is fixedly connected to the surface of the screwing block. According to the utility model, through the matched use of the butterfly valve body, the rotating bearing, the valve rod body, the sealing hard pad, the sealing soft pad, the first spring, the pressing block, the screwing block, the limiting block, the vertical rod, the sliding plate, the anti-falling plate and the anti-falling block, the sealing effect of the valve rod is improved through double sealing of the sealing hard pad and the sealing soft pad, and meanwhile, the valve rod is convenient and quick to replace after abrasion occurs, so that the practicability is improved.

Description

Valve rod sealing structure of butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a valve rod sealing structure of a butterfly valve.

Background

The butterfly valve is also called a flap valve, which is a regulating valve with a simple structure, and can be used for the on-off control of low-pressure pipeline media, wherein a closing member (a valve clack or a butterfly plate) is a disc, and the butterfly valve rotates around a valve shaft to achieve the purpose of opening and closing.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model aims to provide a valve rod sealing structure of a butterfly valve, which has the advantages of good sealing effect and convenient replacement of a sealing gasket.

(II) technical scheme

The utility model provides the following technical scheme for realizing the purpose, and the technical scheme adopted by the valve rod sealing structure of the butterfly valve is as follows: including the butterfly valve body, the bottom fixedly connected with rolling bearing of butterfly valve body inner chamber, rolling bearing's inner wall fixedly connected with valve rod body, butterfly valve body inner chamber's bottom is provided with sealed hard pad, sealed hard pad's top is provided with sealed cushion, sealed cushion's top is provided with first spring, the top of first spring is provided with the briquetting, the top fixedly connected with of briquetting twists the piece, twist the fixed surface of piece and be connected with the stopper, the inner chamber fixedly connected with montant of stopper, the surface sliding connection of montant has the slide, the bottom fixedly connected with anticreep board of slide, the fixed surface of butterfly valve body is connected with the anticreep piece.

As a preferable scheme, the bottom of the sealing soft cushion is fixedly connected with a sealing insert block, and a sealing groove matched with the sealing insert block is formed in the inner cavity of the sealing hard cushion.

As a preferable scheme, the screwing block is in threaded connection with the butterfly valve body, and the surface of the screwing block is provided with a through groove which is matched with the valve rod body.

As the preferable scheme, the bottom fixedly connected with limiting plate of montant, the surface cover of montant is equipped with the second spring.

As a preferable scheme, the top of the inner cavity of the limiting block is fixedly connected with an iron sucking magnet, and the sliding plate is made of an antirust iron block.

As the preferred scheme, the front side fixedly connected with push rod of slide, the promotion logical groove with push rod looks adaptation is seted up to the front side of stopper, the anticreep logical groove with anticreep board looks adaptation is seted up to the surface of anticreep piece.

(III) beneficial effects

Compared with the prior art, the valve rod sealing structure of the butterfly valve has the following beneficial effects.

1. Through butterfly valve body, rolling bearing, valve rod body, sealed hard pad, sealed cushion, first spring, briquetting, twist movable block, stopper, montant, slide, anticreep board and the cooperation of anticreep piece use, through sealed hard pad and sealed cushion dual seal, improve the sealed effect of valve rod, make things convenient for quick replacement after wearing and tearing appear simultaneously, improve the practicality.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the stopper according to the present utility model;

FIG. 3 is a schematic view of the internal structure of the butterfly valve body of the present utility model;

FIG. 4 is a schematic cross-sectional view of a gasket of the present utility model.

In the figure: 1. a butterfly valve body; 2. a rotating bearing; 3. a valve stem body; 4. sealing the hard pad; 5. sealing the soft cushion; 6. a first spring; 7. briquetting; 8. twisting the block; 9. a limiting block; 10. a vertical rod; 11. a slide plate; 12. an anti-drop plate; 13. an anti-falling block; 14. sealing the insert block; 15. a limiting plate; 16. a second spring; 17. an antiferromagnetic material; 18. a push rod; 19. an anti-falling through groove.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-4, the present utility model: the utility model provides a valve rod seal structure of butterfly valve, including butterfly valve body 1, the bottom fixedly connected with rolling bearing 2 of butterfly valve body 1 inner chamber, rolling bearing 2's inner wall fixedly connected with valve rod body 3, butterfly valve body 1 inner chamber's bottom is provided with sealed hard pad 4, sealed hard pad 4's top is provided with sealed cushion 5, sealed cushion 5's top is provided with first spring 6, first spring 6's top is provided with briquetting 7, briquetting 7's top fixedly connected with twists piece 8, twists piece 8's fixed surface and is connected with stopper 9, stopper 9's inner chamber fixedly connected with montant 10, montant 10's surface sliding connection has slide 11, slide 11's bottom fixedly connected with anticreep board 12, butterfly valve body 1's fixed surface is connected with anticreep piece 13.

The bottom of the sealing cushion 5 is fixedly connected with a sealing insert 14, and the inner cavity of the sealing hard cushion 4 is provided with a sealing groove matched with the sealing insert 14;

by providing the seal insert 14 and the seal groove, the connectivity between the seal cushion 5 and the seal hard cushion 4 can be enhanced, and the seal effect can be improved.

The screwing block 8 is in threaded connection with the butterfly valve body 1, and the surface of the screwing block 8 is provided with an inlet and outlet through groove matched with the valve rod body 3;

the bottom of the vertical rod 10 is fixedly connected with a limiting plate 15, and the surface of the vertical rod 10 is sleeved with a second spring 16;

through setting up limiting plate 15 and second spring 16, can strengthen the anticreep effect after anticreep board 12 and anticreep piece 13 joint.

The top of the inner cavity of the limiting block 9 is fixedly connected with an iron sucking magnet 17, and the sliding plate 11 is made of an antirust iron block;

by providing the attracting magnet 17 and the slide plate 11, the drop-off preventing plate 12 can be retracted into the inner cavity of the stopper 9 as necessary.

The front side of the sliding plate 11 is fixedly connected with a push rod 18, the front side of the limiting block 9 is provided with a pushing through groove matched with the push rod 18, and the surface of the anti-falling block 13 is provided with an anti-falling through groove 19 matched with the anti-falling plate 12;

by providing the push rod 18, the drop plate 12 can be pushed out.

The working principle of the utility model is as follows: the sealing hard pad 4 is plugged into the inner cavity of the butterfly valve body 1, then the sealing soft pad 5 is plugged into the inner cavity of the butterfly valve body 1, meanwhile, the sealing insert block 14 is inserted into the inner cavity of the sealing groove, the first spring 6 is sleeved on the surface of the valve rod body 3, the screwing block 8 is screwed on the surface of the butterfly valve body 1, the anti-falling plate 12 is pushed out downwards through the push rod 18 after the last circle is screwed, the screwing block 8 is rotated, the anti-falling plate 12 is inserted into the anti-falling through groove 19 of the anti-falling block 13, and at the moment, the sealing structure is installed.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims

1. The utility model provides a valve rod seal structure of butterfly valve, includes butterfly valve body (1), its characterized in that: the butterfly valve comprises a butterfly valve body (1), wherein a rotating bearing (2) is fixedly connected to the bottom of the inner cavity of the butterfly valve body (1), a valve rod body (3) is fixedly connected to the inner wall of the rotating bearing (2), a sealing hard pad (4) is arranged at the bottom of the inner cavity of the butterfly valve body (1), a sealing soft pad (5) is arranged at the top of the sealing hard pad (4), a first spring (6) is arranged at the top of the sealing soft pad (5), a pressing block (7) is arranged at the top of the first spring (6), a screwing block (8) is fixedly connected to the top of the pressing block (7), a limiting block (9) is fixedly connected to the surface of the screwing block (8), a vertical rod (10) is fixedly connected to the inner cavity of the limiting block (9), a sliding plate (11) is connected to the surface of the vertical rod (10), a falling-preventing plate (12) is fixedly connected to the bottom of the sliding plate (11), and a falling-preventing block (13) is fixedly connected to the surface of the butterfly valve body (1).

2. The valve stem seal of a butterfly valve of claim 1, wherein: the bottom of the sealing cushion (5) is fixedly connected with a sealing insert (14), and a sealing groove matched with the sealing insert (14) is formed in the inner cavity of the sealing hard cushion (4).

3. The valve stem seal of a butterfly valve of claim 1, wherein: the screwing block (8) is in threaded connection with the butterfly valve body (1), and a through groove matched with the valve rod body (3) is formed in the surface of the screwing block (8).

4. The valve stem seal of a butterfly valve of claim 1, wherein: the bottom of montant (10) is fixedly connected with limiting plate (15), the surface cover of montant (10) is equipped with second spring (16).

5. The valve stem seal of a butterfly valve of claim 1, wherein: the top of the inner cavity of the limiting block (9) is fixedly connected with an iron absorbing magnet (17), and the sliding plate (11) is made of an antirust iron block.

6. The valve stem seal of a butterfly valve of claim 1, wherein: the front side fixedly connected with push rod (18) of slide (11), the promotion logical groove with push rod (18) looks adaptation is seted up to the front side of stopper (9), anticreep piece (13) surface seted up anticreep logical groove (19) with anticreep board (12) looks adaptation.