CN217207783U

CN217207783U - Low-abrasion full-lining butterfly valve

Info

Publication number: CN217207783U
Application number: CN202220501134.1U
Authority: CN
Inventors: 孙志国; 丁永会; 樊文江; 李萌; 张国栋
Original assignee: Tianjin Outshine Valve Co ltd
Current assignee: Tianjin Outshine Valve Co ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-08-16
Anticipated expiration: 2032-03-08

Abstract

The invention provides a low-abrasion full-lining butterfly valve, which comprises a valve body and a valve plate arranged in the valve body, wherein the valve plate is driven to rotate by a valve rod arranged on the valve body, so that sealing is formed between the valve plate and a lining arranged on the inner wall of the valve body; the lining comprises a main body and two clamping rings arranged on the outer wall of the main body in parallel, clamping grooves are formed in the inner wall of the valve body corresponding to the clamping rings, and a sealing matching part is arranged in the position, corresponding to the position between the two clamping rings, of the inner wall of the main body; the cross section of the outer edge of the valve plate is of a hemispherical structure, and when the valve plate is closed, the outer edge of the valve plate is attached to the sealing matching part. The valve has the advantages that the structure is simple, the outer edge of the valve plate is arc-shaped, the abrasion of the lining is effectively reduced, the reliability of the sealing of the valve is effectively improved by installing the lining with the sealing matching part in the valve body, the performance of the valve is stable, the use reliability is high, and the service life is long.

Description

Low-abrasion full-lining butterfly valve

Technical Field

The invention belongs to the technical field of valve design and manufacture, and particularly relates to a low-wear full-lining butterfly valve.

Background

Butterfly valves are commonly used as control valves for controlling the flow of air, water, steam and various types of fluids, and are installed in pipelines to mainly perform cutoff and throttling functions. Most of the existing butterfly valves are provided with a sealing element on a valve plate, and when the valve plate is closed through a valve rod, the sealing element is contacted with a valve body to realize sealing. However, in the valve sealing mode designed in this way, the inner wall of the valve body needs to be subjected to finish machining so as to be tightly attached to the sealing element to realize sealing. The sealing member is easy to wear, the sealing reliability is low, the service life of the valve is short, and meanwhile, the valve body is high in machining quality requirement and high in cost. Therefore, there is a need for improvements in such butterfly valves.

Disclosure of Invention

In view of the above, the present invention provides a low-wear butterfly valve with a full inner liner to overcome the defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a low-abrasion full-lining butterfly valve comprises a valve body and a valve plate arranged in the valve body, wherein the valve plate is driven to rotate by a valve rod arranged on the valve body, so that the valve plate and a lining arranged on the inner wall of the valve body form sealing; the lining comprises a main body and two clamping rings arranged on the outer wall of the main body in parallel, clamping grooves are formed in the inner wall of the valve body corresponding to the clamping rings, and a sealing matching part is arranged in the position, corresponding to the position between the two clamping rings, of the inner wall of the main body; the cross section of the outer edge of the valve plate is of a hemispherical structure, and when the valve plate is closed, the outer edge of the valve plate is attached to the sealing matching part.

Furthermore, a deformation gap is reserved between the part, located between the two clamping rings, of the outer wall of the main body and the inner wall of the valve body.

Further, the deformation gap is 0.2-1 mm.

Further, the liner is the same width as the valve body.

Further, the snap ring and the main body adopt an integrated structure.

Further, chamfer structures are respectively arranged at two ends of the inner wall of the main body.

Further, sealed cooperation portion internal diameter is reduced to both sides by main part middle part gradually, and the section is the arc structure, and the valve plate forms sealed cooperation relation with sealed cooperation portion, and is sealed reliable.

Compared with the prior art, the invention has the following advantages:

the valve plate is simple in structure, the outer edge of the valve plate is arc-shaped, abrasion of the lining is effectively reduced, the reliability of valve sealing is effectively improved by installing the lining with the sealing matching part in the valve body, a deformation gap is reserved between the sealing matching part of the lining and the valve body, and the lining can be extruded to generate tiny deformation when the valve plate is tightly attached to the sealing matching part, so that the sealing performance can be improved to the maximum extent, meanwhile, under the condition of generating little abrasion in long-term use, the abrasion loss can be compensated in a self-adaptive mode, the valve is stable in performance, high in use reliability and long in service life.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of an inner liner in an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of the liner of the present invention in an installed application;

FIG. 4 is a schematic view of the liner portion of FIG. 3;

FIG. 5 is the view of FIG. 3 with the liner removed;

FIG. 6 is a schematic structural view of the inner liner and valve body mating part in the invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A low-wear full-lining butterfly valve, as shown in figures 1 to 6, comprises a valve body 1 and a valve plate 2 arranged in the valve body, wherein the valve plate is driven to rotate by a valve rod 3 arranged on the valve body, so that a seal is formed between the valve plate and a lining 8 arranged on the inner wall of the valve body, and the lining is generally the same as the valve body in width. The lining comprises a main body 4 and two clamping rings 5 arranged on the outer wall of the main body in parallel, a clamping groove 6 is arranged on the inner wall of the valve body corresponding to the clamping rings, and a sealing matching part 7 is arranged on the inner wall of the main body corresponding to the position between the two clamping rings; the cross section of the outer edge of the valve plate is of a hemispherical structure 10 (namely, the outer edge of the valve plate is of an arc shape), when the valve plate is closed, the outer edge of the valve plate is attached to the sealing matching part to form reliable sealing performance, and the outer edge of the hemispherical structure is in contact with the sealing matching part, so that abrasion can be reduced to the maximum extent.

In an alternative embodiment, the outer wall of the main body is positioned between the two clamping rings, and a deformation gap 9 is reserved between the outer wall of the main body and the inner wall of the valve body. Usually, the strain gap is preferably 0.2 to 1 mm. In addition, chamfer structures are respectively arranged at two ends of the inner wall of the main body, so that abrasion and slag falling of corner parts are reduced. When the valve body is specifically implemented, a groove with the diameter larger than that of the two sides can be machined in the part, between the two clamping grooves, on the inner wall of the valve body, or the groove can be machined in the part, between the two clamping rings, on the outer wall of the main body, the shape of the groove is not limited, and only a deformation gap can be formed between the main body and the valve body. The designed two snap rings effectively play a role in sealing between the lining and the valve body, the sealing reliability is very high, and the valve is ensured not to have internal leakage.

The inner diameter of the sealing matching part is gradually reduced from the middle part of the main body to two sides, and the cross section of the sealing matching part is of an arc structure, namely the outer surface of the sealing matching part is of an arc shape. It should be pointed out that valve plate and sealed cooperation portion form sealed cooperation relation, ensure that the valve seals reliably to, and, when the valve plate compresses tightly sealed cooperation portion, the deformation clearance between main part and the valve body inner wall can allow sealed cooperation portion to produce little deformation, and such structural design not only ensures sealed reliably, simultaneously, even the valve after frequent use for a long time, the inside (sealed cooperation portion) surface of inside lining appears a small amount of wearing and tearing, also can self-adaptation compensation wearing and tearing, ensures the leakproofness. For example, the inner diameter of the minimum diameter of the sealing matching part is 0.2-1mm smaller than the inner diameter of the non-sealing matching part of the main body.

In an alternative embodiment, the sealing engagement portion may be vulcanized to the inner wall of the main body, and the snap ring may be vulcanized to the outer wall of the main body. In general, the snap ring and the body may be formed integrally of the same material. By way of example, the liner may be nylon or rubber, although the materials may be selected conventionally by those skilled in the art.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. The utility model provides a low wearing and tearing butterfly valve that fully lines which characterized in that: the valve plate is driven to rotate by a valve rod arranged on the valve body, so that sealing is formed between the valve plate and a lining arranged on the inner wall of the valve body; the lining comprises a main body and two clamping rings arranged on the outer wall of the main body in parallel, clamping grooves are formed in the inner wall of the valve body corresponding to the clamping rings, and a sealing matching part is arranged in the position, corresponding to the position between the two clamping rings, of the inner wall of the main body; the cross section of the outer edge of the valve plate is of a hemispherical structure, and when the valve plate is closed, the outer edge of the valve plate is attached to the sealing matching part.

2. A low-wear fully lined butterfly valve in accordance with claim 1, wherein: and a deformation gap is reserved between the part of the outer wall of the main body, which is positioned between the two clamping rings, and the inner wall of the valve body.

3. A low-wear fully lined butterfly valve in accordance with claim 2, wherein: the deformation clearance is 0.2-1 mm.

4. A low-wear fully lined butterfly valve in accordance with claim 1 wherein: the liner is the same width as the valve body.

5. A low-wear fully lined butterfly valve in accordance with claim 1, wherein: the snap ring and the main body adopt an integrated structure.

6. A low-wear fully lined butterfly valve in accordance with claim 1, wherein: and two ends of the inner wall of the main body are respectively provided with a chamfer structure.

7. A low-wear fully lined butterfly valve in accordance with claim 1, wherein: the inner diameter of the sealing matching part is gradually reduced from the middle part of the main body to two sides.