CN219317635U

CN219317635U - Butterfly valve seat with locking sealing structure

Info

Publication number: CN219317635U
Application number: CN202320183821.8U
Authority: CN
Inventors: 张春阳
Original assignee: Tianjin Hongsen Rubber Products Co ltd
Current assignee: Tianjin Hongsen Rubber Products Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-07-07
Anticipated expiration: 2033-02-10

Abstract

The utility model belongs to the technical field of butterfly valves, and particularly relates to a butterfly valve seat with a locking sealing structure, which comprises a valve body and a valve seat, wherein the valve seat is arranged in the valve body, a valve rod is arranged on the valve body, a valve plate is arranged in the valve seat, a limiting groove is formed in the inner wall of the valve seat, a soft magnet is arranged between the inner wall of the valve seat and the outer side of the valve seat, a limiting piece is arranged on the outer edge of the valve plate, a first assembly is arranged in the valve seat, a second assembly is arranged in the valve seat and in contact with the first assembly, and an air cavity is formed among the first assembly, the second assembly and the valve seat. According to the utility model, the limiting groove, the limiting piece, the soft magnet and the air cavity are arranged, so that the limiting piece at the outer edge of the valve plate is arranged in the limiting groove and is contacted with the soft magnet embedded in the valve seat when the butterfly valve is closed, magnetic attraction is generated, the tightness between the valve plate and the valve seat is improved, and the air cavity can ensure the flexibility of the whole rubber valve seat, so that the influence on the service life of the valve seat caused by hardening due to long-term use is avoided.

Description

Butterfly valve seat with locking sealing structure

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve seat with a locking and sealing structure.

Background

The butterfly valve is also called as flap valve, and is a simple-structure regulating valve, and can be used for controlling the opening and closing of low-pressure pipeline medium. Each part of the parts are made of different materials, and are matched and combined mutually to be suitable for different working condition environments, and the valve seat of the soft sealing butterfly valve is mainly made of EPDM ternary Z-propyl rubber, NBR nitrile rubber and PTFE polytetrafluoroethylene; the valve seat material cr of the hard seal butterfly valve is stainless steel, 304 stainless steel or 316 stainless steel.

The prior art has the following problems:

the butterfly valve disk seat of prior art, the disk seat of soft seal butterfly valve is the rubber material generally, and the material is softer, and its pliability all can reduce gradually after the live time is too long, influences the life of later stage disk seat, and links up the leakproofness between disk seat and the valve plate and can receive the influence equally, and structural singleness does not possess locking structure between current disk seat and the valve plate.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the butterfly valve seat with the locking sealing structure, which solves the problems that the valve seat of the existing soft sealing butterfly valve is generally made of rubber, the material is softer, the flexibility of the valve seat is gradually reduced after the service time is longer, the service life of the later valve seat is influenced, the joint tightness between the valve seat and the valve plate is also influenced, the structure between the current valve seat and the valve plate is single, and the locking structure is not provided.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a butterfly valve disk seat that possesses locking seal structure, includes valve body, disk seat, the disk seat is arranged in the valve body, be provided with the valve rod on the valve body, be provided with the valve plate in the disk seat, the limiting groove has been seted up to the disk seat inner wall, be provided with soft magnetic body between disk seat inner wall and the outside, the valve plate outer fringe is provided with the limiting piece, the disk seat is inside to be provided with first sub-assembly, the disk seat is inside to be provided with the second sub-assembly with first sub-assembly looks contact, form the air cavity between first sub-assembly, second sub-assembly and the disk seat.

As a preferred technical scheme of the utility model: the valve seat is fixedly arranged in the valve body and is matched with the valve body.

As a preferred technical scheme of the utility model: the valve rod sequentially passes through the valve body and the valve seat and is rotationally connected with the lower part of the valve body, and the valve plate is fixedly arranged on the valve rod and is arranged in the valve body.

As a preferred technical scheme of the utility model: the valve plate is matched with the valve seat, the limiting piece is fixedly arranged on the outer edge of the valve plate, the limiting piece is formed by casting iron, and the outer side of the limiting piece is coated with a rust-proof coating.

As a preferred technical scheme of the utility model: the limiting piece is matched with the limiting groove, the soft magnet is embedded between the inner wall and the outer side of the valve seat and is close to the position of the limiting groove, and the soft magnet is matched with the shape of the limiting groove.

As a preferred technical scheme of the utility model: the first assembly and the second assembly are connected with the valve seat to form a whole, and an air cavity is formed in the valve seat between the first assembly and the second assembly.

Compared with the prior art, the utility model provides the butterfly valve seat with the locking and sealing structure, which has the following beneficial effects:

this butterfly valve disk seat that possesses locking seal structure through setting up restriction groove, restriction piece, soft magnetic body, air cavity, and when the butterfly valve was closed, the restriction piece of valve plate outer fringe will be arranged in the restriction groove to with the soft magnetic body contact of embedding in the disk seat, produce magnetic force and adsorb, make the leakproofness obtain promoting between valve plate and the disk seat, the spacing effect between restriction piece and the restriction groove can effectively restrict the position of valve plate, and the air cavity can ensure the holistic compliance of rubber material disk seat, avoids leading to the hardening and influence the life of disk seat because of long-term use.

Drawings

FIG. 1 is a schematic plan view of a valve seat of the present utility model within a valve body;

FIG. 2 is a schematic perspective view of a valve seat according to the present utility model;

FIG. 3 is a schematic view of a confinement tank according to the present utility model;

FIG. 4 is an enlarged view of FIG. 3A in accordance with the present utility model;

FIG. 5 is a schematic view of a limiter of the present utility model;

FIG. 6 is a schematic view of an air cavity of the present utility model.

In the figure: 1. a valve body; 2. a valve seat; 3. a valve stem; 4. a valve plate; 5. a limiting groove; 6. a soft magnetic body; 7. a restriction member; 8. a first assembly; 9. a second assembly; 10. an air cavity.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 6, in the present embodiment: the utility model provides a butterfly valve disk seat that possesses locking seal structure, including valve body 1, disk seat 2 is arranged in valve body 1, is provided with valve rod 3 on the valve body 1, is provided with valve plate 4 in the disk seat 2, and restriction groove 5 has been seted up to disk seat 2 inner wall, is provided with soft magnetic body 6 between disk seat 2 inner wall and the outside, and the disk plate 4 outer fringe is provided with restriction piece 7, and disk seat 2 inside is provided with first sub-unit 8, and disk seat 2 inside is provided with second sub-unit 9 with first sub-unit 8 contact, forms air cavity 10 between first sub-unit 8, second sub-unit 9 and the disk seat 2.

In the embodiment, the valve seat 2 is fixedly arranged in the valve body 1, and the valve seat 2 is matched with the valve body 1; the valve rod 3 sequentially penetrates through the valve body 1 and the valve seat 2 and is rotationally connected with the lower part of the valve body 1, the valve plate 4 is fixedly arranged on the valve rod 3 and is arranged in the valve body 1, the valve body 1 can be closed and opened through the valve plate 4, and the valve plate 4 can be conveniently controlled through the valve rod 3; the valve plate 4 is matched with the valve seat 2, the limiting piece 7 is fixedly arranged on the outer edge of the valve plate 4, the limiting piece 7 is cast by iron, and the outer side of the limiting piece 7 is coated with a rust-proof coating; the limiting piece 7 is matched with the limiting groove 5, the soft magnet 6 is embedded between the inner wall and the outer side of the valve seat 2 and is close to the position of the limiting groove 5, the soft magnet 6 is matched with the shape of the limiting groove 5, and the sealing effect between the valve plate 4 and the valve seat 2 can be conveniently improved through the limiting piece 7 and the limiting groove 5; the first assembly 8 and the second assembly 9 are connected with the valve seat 2 to form a whole, an air cavity 10 is formed in the valve seat 2 between the first assembly 8 and the second assembly 9, the whole softness of the rubber valve seat 2 can be guaranteed through the air cavity 10, and the influence on the service life of the valve seat 2 due to hardening caused by long-term use is avoided.

The working principle and the using flow of the utility model are as follows: the operator installs valve body 1 on corresponding pipeline through the flange spare that both ends correspond at first, when the butterfly valve is closing, valve rod 3 drives valve plate 4 in the disk seat 2 of valve body 1 and rotates, the restriction piece 7 of valve plate 4 outer fringe will be arranged in restriction groove 5 simultaneously, and with the soft magnetic body 6 contact of embedding in the disk seat 2, produce magnetic force absorption, make the leakproofness between valve plate 4 and the disk seat 2 obtain promoting, and the spacing effect between restriction piece 7 and the restriction groove 5 can effectively restrict the position of valve plate 4, form locking effect, be located the disk seat 2 inner wall and the outside between the air cavity 10 that first sub-unit 8, second sub-unit 9 mutually support and form can ensure the holistic compliance of rubber material disk seat 2, avoid leading to the hardening and influence disk seat 2's life because of long-time use.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a butterfly valve disk seat that possesses locking seal structure, its characterized in that, including valve body (1), disk seat (2) are arranged in valve body (1), be provided with valve rod (3) on valve body (1), be provided with valve plate (4) in disk seat (2), limit groove (5) have been seted up to disk seat (2) inner wall, be provided with soft magnetic body (6) between disk seat (2) inner wall and the outside, valve plate (4) outer fringe is provided with limiting piece (7), disk seat (2) inside is provided with first sub-unit (8), disk seat (2) inside is provided with second sub-unit (9) with first sub-unit (8) contact, form air cavity (10) between first sub-unit (8), second sub-unit (9) and the disk seat (2).

2. The butterfly valve seat with locking seal according to claim 1, wherein: the valve seat (2) is fixedly arranged in the valve body (1), and the valve seat (2) is matched with the valve body (1).

3. The butterfly valve seat with locking seal according to claim 1, wherein: the valve rod (3) sequentially penetrates through the valve body (1), the valve seat (2) and is rotationally connected with the lower part of the valve body (1), and the valve plate (4) is fixedly arranged on the valve rod (3) and is arranged in the valve body (1).

4. The butterfly valve seat with locking seal according to claim 1, wherein: the valve plate (4) is matched with the valve seat (2), the limiting piece (7) is fixedly arranged on the outer edge of the valve plate (4), the limiting piece (7) is formed by casting iron, and the outer side of the limiting piece is coated with a rust-proof coating.

5. The butterfly valve seat with locking seal according to claim 1, wherein: the limiting piece (7) is matched with the limiting groove (5), the soft magnet (6) is embedded between the inner wall and the outer side of the valve seat (2) and is close to the position of the limiting groove (5), and the soft magnet (6) is matched with the shape of the limiting groove (5).

6. The butterfly valve seat with locking seal according to claim 1, wherein: the first assembly (8) and the second assembly (9) are connected with the valve seat (2) to form a whole, and an air cavity (10) is formed in the valve seat (2) between the first assembly (8) and the second assembly (9).