CN212203152U

CN212203152U - Replaceable double-eccentric butterfly valve

Info

Publication number: CN212203152U
Application number: CN202020746472.2U
Authority: CN
Inventors: 王崎峰; 郭俊成; 骆芳; 周宗杰; 魏富钰; 周予博; 徐世东
Original assignee: Anshan Bell Automatic Controlling Co ltd
Current assignee: Anshan Bell Automatic Controlling Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-12-22
Anticipated expiration: 2030-05-08

Abstract

The utility model relates to a but two eccentric butterfly valves of substitution, including the valve body, the disk seat, the valve plate, valve body upper portion is equipped with the long valve rod, the valve body lower part is equipped with the short valve rod, long valve rod and short valve rod pass through connecting seat fixed connection, the evagination of connecting seat along with the interior grove threaded connection of valve plate, the valve plate is connected with the disk seat laminating, it is equipped with a plurality of blind hole on the disk seat terminal surface of binding face one side to keep away from, be equipped with adjusting spring in the blind hole, the valve body intracavity in the adjusting spring outside is equipped with sealed annular, be equipped with the gland nut and the interior. The utility model discloses the structure is all simple, and processing is convenient, the maintenance of being convenient for. The modular structure also makes the valve need the part of change under different requirements to become less, has increased the practicality of valve.

Description

Replaceable double-eccentric butterfly valve

Technical Field

The utility model relates to a valve field, in particular to but two eccentric butterfly valves of substitution.

Background

The double-eccentric butterfly valve is also called as a high-performance butterfly valve, is mainly suitable for drainage of systems such as water plants, power plants, steel plant smelting, chemical engineering, water source spring engineering, environmental facility construction and the like, is particularly suitable for water pipelines, and is used as regulating and intercepting equipment. Compared with a center line butterfly valve, the double-eccentric butterfly valve is more resistant to high pressure, longer in service life and good in stability. The larger the bore the lighter the material and the lower the cost compared to other valves.

The current two eccentric valves very make sealed face cause the damage meeting with the medium under long-time erodeing, influence the holistic leakproofness of valve, and will make its maintenance process become more difficult because of the shape of valve plate and disk seat in the maintenance process, and the result of use after the maintenance is relatively poor, the utility model aims to design a structure convenient to replace to this problem.

Disclosure of Invention

The utility model aims to solve the technical problem that a but two eccentric butterfly valves of substitution is provided, the problem of the interior maintenance difficulty of two eccentric valves is solved.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a but two eccentric butterfly valves of substitution, which comprises a valve body, the disk seat, the valve plate, valve body upper portion is equipped with the long valve rod, the valve body lower part is equipped with the short valve rod, long valve rod and short valve rod pass through connecting seat fixed connection, the evagination of connecting seat is along the interior grove threaded connection with the valve plate, the valve plate is connected with the disk seat laminating, it is equipped with a plurality of blind hole on the disk seat terminal surface of binding face one side to keep away from, be equipped with the adjusting spring in the blind hole, the valve body intracavity in the adjusting spring outside is equipped with the seal ring groove, be.

The long valve rod and the short valve rod are respectively connected with the connecting seat through splines.

The center of one side of the valve plate is provided with a cross groove.

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

the utility model discloses the structure is all simple, and processing is convenient, the maintenance of being convenient for. The modular structure also makes the valve need the part of change under different requirements to become less, has increased the practicality of valve. The double-eccentric valve is suitable for the problem of difficult maintenance in a double-eccentric valve under the working condition that corrosive media exist in the petrochemical industry or solid particles exist in the media and the like and easily damage the sealing surface of the valve.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the valve plate structure.

Fig. 3 is a partial schematic view of the present invention.

In the figure: 1. a valve body; 2. a long valve stem; 3. a valve seat; 4. adjusting the spring; 5, pressing the nut; 6. a valve plate; 7. a connecting seat; 8. a short valve stem; 9. blind holes; 10. sealing ring groove, 11. cross groove 11.

Detailed Description

The following further describes the embodiments of the present invention with reference to the attached drawings:

as shown in fig. 1-3, a replaceable double-eccentric butterfly valve comprises a valve body 1, a valve seat 3 and a valve plate 6, wherein a long valve rod 2 is arranged on the upper portion of the valve body 1, a short valve rod 8 is arranged on the lower portion of the valve body 1, the lower end of the long valve rod 2 is connected with a connecting seat 7 through a spline, and the upper end of the short valve rod 8 is connected with the connecting seat 7 through a spline.

The outer convex edge of the connecting seat 7 is in threaded connection with the inner groove of the valve plate 6, and the center of the other side of the valve plate 6 is provided with a cross groove 11 for mounting and dismounting the valve plate 6.

The valve plate 6 is attached to the valve seat 3, a plurality of blind holes 9 are formed in the end face, far away from the valve seat 3 on one side of the attaching face, of the valve seat, adjusting springs 4 are arranged in the blind holes 9, a sealing ring groove 10 is formed in a valve body cavity at the outer ends of the adjusting springs 4, and a compression nut 5 for compressing the adjusting springs 4 is arranged in the sealing ring groove 10 and is connected with the inner wall threads of the sealing ring groove 10.

Example 1

The utility model provides a two eccentric butterfly valves of replaceable, includes valve body 1, disk seat 3, valve plate 6, and 1 upper portion of valve body is equipped with long valve rod 2, and 1 lower part of valve body is equipped with short valve rod 8, and long valve rod 2's lower extreme passes through splined connection with connecting seat 7, and short valve rod 8's upper end passes through splined connection with connecting seat 7.

Valve plate 6 is connected with the laminating of disk seat 3, is equipped with 6 blind holes 9 on the terminal surface of disk seat 3 of keeping away from binding face one side, is equipped with adjusting spring 4 in the blind hole 9, is equipped with sealing ring groove 10 in the valve body chamber of adjusting spring 4 outer end, is equipped with the inner wall threaded connection who compresses tightly 5 of adjusting spring 4 and sealing ring groove 10 in the sealing ring groove 10.

Example 2

The valve plate 6 is attached to the valve seat 3, 8 blind holes 9 are formed in the end face, far away from the valve seat 3 on one side of the attaching face, of the valve seat 3, an adjusting spring 4 is arranged in each blind hole 9, a sealing ring groove 10 is formed in a valve body cavity at the outer end of the adjusting spring 4, and a compression nut 5 for compressing the adjusting spring 4 is arranged in each sealing ring groove 10 and is connected with the inner wall of each sealing ring groove 10 in a threaded mode. The relative position of the valve seat 3 can be adjusted by adjusting the position of the compression nut 5 through the adjusting spring 4, so that the valve seat is attached to the valve plate 6, and the sealing effect is achieved.

The valve has a relatively simple structure and good interchangeability, and the valve seat 3 can adopt a metal valve seat, a plastic soft sealing valve seat and a soft and hard sealing composite valve seat according to the sealing grade change or the actual customer requirements to realize the interchange between soft and hard sealing structures or fireproof structures of the same structure; when the valve seat 3 is damaged, the valve seat 3 can be taken out and replaced by a new one only by unscrewing the compression nut 5; when the valve plate 6 is damaged, after the compression nut 5 and the valve seat 3 are taken out, the threaded connection between the valve plate 6 and the connecting piece 7 can be opened, and the valve plate 6 can be repaired or replaced; when the connecting piece 7 is damaged, the valve plate 6, the valve seat 3 and the compression nut 5 are taken out, and then the long valve rod 2 and the short valve rod 8 can be taken out only by separating the spline connected with the connecting seat 7.

Generally speaking, the structures of the valve sealing element (the valve plate 6 and the valve seat 3) and other valve internals are simple, the processing, the repair and the renewal are convenient, meanwhile, the modularized structure enables the parts of the valve which need to be changed under different customer requirements to be reduced, and the practicability of the valve is improved.

The above is only the basic principle of the present invention, not to the present invention makes any limitation, all the bases of the present invention are the same changes and modifications to the above, all within the scope of the protection scheme of the present patent technology.

Claims

1. The utility model provides a but two eccentric butterfly valves of substitution, a serial communication port, which comprises a valve body, a valve seat, the valve plate, valve body upper portion is equipped with the long valve rod, the valve body lower part is equipped with the short valve rod, long valve rod and short valve rod pass through connecting seat fixed connection, the evagination of connecting seat is along the interior grove threaded connection with the valve plate, the valve plate is connected with the disk seat laminating, it is equipped with a plurality of blind hole on the disk seat terminal surface of binding face one side to keep away from, be equipped with adjusting spring in the blind hole, the valve body intracavity in the adjusting spring outside is equipped with sealed annular, be equipped with.

2. A replaceable double eccentric butterfly valve according to claim 1, wherein the long and short valve stems are respectively connected with the connecting seat by a spline.

3. A replaceable double eccentric butterfly valve according to claim 1, wherein a cross-shaped groove is formed in the center of one side of the valve plate.