CN210770305U

CN210770305U - Butterfly valve with skeleton structure sealing member

Info

Publication number: CN210770305U
Application number: CN201921901109.7U
Authority: CN
Inventors: 孙志国
Original assignee: Tianjin Jufu Fluid Control Equipment Co ltd
Current assignee: Tianjin Jufu Fluid Control Equipment Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-06-16
Anticipated expiration: 2029-11-06

Abstract

The utility model provides a butterfly valve with a framework structure sealing element, which comprises a valve body and a valve plate driven by a valve rod in the valve body, wherein an operating handle is arranged at one end of the valve rod extending out of the valve body; the valve plate comprises a valve plate body, wherein a sealing assembly is arranged at a step on the outer edge of the valve plate body and is pressed and fixed by a pressing ring. The utility model discloses the butterfly valve structural design who creates and provide is reasonable, and sealing reliability is high, and the valve plate adopts the structural design of combination formula, and the assembly is convenient with the dismantlement, and sealed change and maintenance are easier. Simultaneously, will seal the body and fix the setting in the skeleton, improved sealed stability greatly.

Description

Butterfly valve with skeleton structure sealing member

Technical Field

The invention belongs to the technical field of valves, and particularly relates to a butterfly valve with a framework structure sealing element.

Background

The butterfly valve generally drives the valve plate by the valve rod and rotates, reaches the purpose of opening and close or adjusting, and frequent rotation in the course of the work, sealing member and valve body on the dish board produce the friction, and current sealing member is opened and is closed the in-process at the valve and produce easily and rock, has the possibility that drops even, and stability is relatively poor, even under encapsulated situation, receives the influence of the interior fluid pressure of pipeline, and in the great occasion of pressure, the sealing member has the condition of being extruded out the seal groove. Therefore, the sealing position of the valve plate of the butterfly valve needs to be improved, the sealing structure form is optimized, and the service life of the valve is prolonged.

Disclosure of Invention

In view of this, the present invention provides a butterfly valve with a skeleton-structured sealing element, which is stable and reliable in sealing and long in service life.

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

a butterfly valve with a framework structure sealing element comprises a valve body and a valve plate driven by a valve rod in the valve body, wherein an operating handle is arranged at one end of the valve rod, which extends out of the valve body; the valve plate comprises a valve plate body, a sealing assembly is arranged at a step on the outer edge of the valve plate body, and the sealing assembly is pressed and fixed by a pressing ring;

the sealing assembly comprises a U-shaped framework, and a sealing body is arranged in the framework; the sealing body comprises a base part and a supporting part, wherein the base part is different from one side of the framework;

two sides of the bottom of the framework are respectively provided with a side wing; the step of the valve plate body comprises a positioning surface and a supporting surface, and a clamping groove matched with the side wing at the corresponding side of the framework is formed in the positioning surface of the valve plate body; the compression ring is provided with a compression structure which can support the side face of the framework and limit the side wing on the side to be separated.

Further, the supporting part comprises two support legs which are respectively outward.

Further, a support body is provided between the base portion and the legs on both sides.

Further, the framework comprises a bottom part and a side part, a clamping groove is formed in the inner wall of the side part, and protruding bodies corresponding to the clamping groove are respectively arranged on two sides of the base body of the sealing body.

Further, the bottom of the framework and the side parts of the two sides of the framework are of an integrally formed structure.

Furthermore, the outer side surface of the supporting part is provided with at least one groove.

Further, the clamping ring is fixed on the valve plate body through a connecting piece.

Further, the connecting piece adopts full thread screw.

Furthermore, the mounting hole for mounting the connecting piece on the compression ring adopts a sunk platform hole structure.

Further, the base portion and the support portion of the seal are of an integrally molded structure.

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

the butterfly valve provided by the invention has the advantages of reasonable structural design and high sealing reliability, the valve plate adopts a combined structural design, the sealing assembly is fixed on the valve plate body through the compression ring, the assembly and the disassembly are convenient, and the sealing replacement and the maintenance are easy. Simultaneously, will seal the fixed setting of body in the skeleton, improve sealed stability greatly, can not rock when the valve plate rotates, more can not break away from the valve plate.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

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

FIG. 2 is a schematic view of the structure of the valve plate portion in the invention;

FIG. 3 is a schematic view of a portion of the seal assembly of the present invention;

FIG. 4 is a schematic view of the framework of the present invention;

FIG. 5 is a schematic view of a seal body in accordance with the present invention;

FIG. 6 is a schematic view of the seal assembly mounted to a valve plate in accordance with the teachings of the present invention;

FIG. 7 is a schematic view of a stepped portion of a valve plate in an embodiment of the invention;

fig. 8 is a schematic view of a pressure ring in an embodiment of the invention.

Description of reference numerals:

1-a valve body; 2-a valve plate; 3-a valve stem; 4-operating a handle; 5-a valve plate body; 6-a sealing assembly; 7-pressing a ring; 8-a framework; 9-sealing the body; a 10-base portion; 11-a support; 12-flank; 13-a positioning surface; 14-a support surface; 15-a connector; 16-a compression structure; 17-a leg; 18-bottom; 19-lateral part; 20-a card slot; 21-convexity; 22-a groove; 23-connecting piece.

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 butterfly valve having a skeletal seal, as shown in FIGS. 1 to 8,

the valve comprises a valve body 1 and a valve plate 2 driven by a valve rod in the valve body, wherein an operating handle 4 is arranged at one end of the valve rod 3 extending out of the valve body;

the valve plate comprises a valve plate body 5, a sealing assembly 6 is arranged at a step on the outer edge of the valve plate body, and the sealing assembly is pressed and fixed by a pressing ring 7;

the sealing component comprises a U-shaped framework 8, and a sealing body 9 is arranged in the framework; the sealing body comprises a base part 10 and a supporting part 11 on one side of the base part different from the framework;

two sides of the bottom of the framework are respectively provided with a side wing 12; the step of the valve plate body comprises a positioning surface 13 and a supporting surface 14, and the supporting surface is a circumferential surface taking the center of the valve plate body as the center. The positioning surface is provided with a matching groove matched with the side wing at the corresponding side of the framework; and the compression ring is provided with a compression structure 16 which can support the side face of the framework and limit the side wing on the side to be separated.

It should be noted that, in order to facilitate the assembly of the pressure ring, the compression structure is generally perpendicular to the pressure ring body, and the inner side surface of the compression structure is an inclined surface, that is, the inner diameter of the compression structure is gradually reduced from one end close to the framework to one end of the pressure ring body.

In an alternative embodiment, the support portion comprises two legs 17 directed outwardly respectively. Run through between base part and both sides stabilizer blade and be equipped with the supporter, the supporter adopts spring steel, fiber material or other materials preparation that have certain deformation (recover) ability, can play fine enhancement supporting role for sealed body structure is more stable, and deformation (recover) ability is better. Moreover, the trend of the supporting body is adapted to the shapes of the supporting feet at two sides, and all bending parts are in fillet transition without right-angled bends, so that stress concentration is effectively avoided.

The framework comprises a bottom part 18 and a side part 19, a clamping groove 20 is arranged on the inner wall of the side part, and convex bodies 21 corresponding to the clamping groove are respectively arranged on two sides of the base body part of the sealing body. For the integral sealing element, the convex body can be in an annular structure, a circle is arranged along the sealing element, in another embodiment, the convex body can also be in an intermittent arrangement, and the convex body is in a section of convex body structure, and the clamping groove is in a ring groove structure, so that each section of convex body is also in an arc structure matched with the radian of the convex body.

In an alternative embodiment, the depth of the slot is 0.2-1 mm. The height of the convex body is 0.15-0.8 mm. The convex body height slightly is less than the draw-in groove degree of depth, has guaranteed that the convex body can all insert in the draw-in groove, realizes the location, guarantees the stability of sealed body on the skeleton, in the valve use, even frequently manipulate the valve plate action can not lead to sealed not droing yet.

Generally, the bottom of the frame and the side portions of the two sides of the frame are integrally formed. The base part and the support part of the sealing element are of an integrated molding structure.

The outer side of the supporting part is provided with at least one groove 22. When the valve plate rotates to a closed state, the supporting part is in contact with the inner wall of the valve body, the surface of the supporting part is divided into a plurality of sealing structures (similar to a plurality of sealing lips) by the groove structure arranged on the surface of the valve plate, the sealing reliability is better, and the stability is higher.

The pressing ring is fixed on the valve plate body through a connecting piece 15. Generally, the above-mentioned connecting member uses a full-thread screw. And the mounting hole for mounting the connecting piece on the compression ring adopts a sinking platform hole structure, and the nut part of the screw is sunk into the sinking platform.

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. A butterfly valve with a framework structure sealing element comprises a valve body and a valve plate driven by a valve rod in the valve body, wherein an operating handle is arranged at one end of the valve rod, which extends out of the valve body; the method is characterized in that:

the valve plate comprises a valve plate body, a sealing assembly is arranged at a step on the outer edge of the valve plate body, and the sealing assembly is pressed and fixed by a pressing ring;

two sides of the bottom of the framework are respectively provided with a side wing; the step of the valve plate body comprises a positioning surface and a supporting surface, and a clamping groove matched with the side wing at the corresponding side of the framework is formed in the positioning surface of the valve plate body;

and the compression ring is provided with a compression structure which can support the side face of the framework and limit the side wing on the side to be separated.

2. The butterfly valve with a skeletal structure seal of claim 1, wherein: the supporting part comprises two support legs which are respectively outward.

3. The butterfly valve with a skeletal structure seal of claim 2, wherein: a support body is arranged between the base body part and the two side support legs in a penetrating way.

4. The butterfly valve with a skeletal structure seal of claim 1, wherein: the framework comprises a bottom part and a side part, a clamping groove is formed in the inner wall of the side part, and convex bodies corresponding to the clamping groove are respectively arranged on two sides of the base body of the sealing body.

5. The butterfly valve with a skeletal structure seal of claim 4, wherein: the bottom of the framework and the side parts of the two sides of the framework are of an integrally formed structure.

6. The butterfly valve with a skeletal structure seal of claim 4, wherein: the outer side surface of the supporting part is provided with at least one groove.

7. The butterfly valve with a skeletal structure seal of claim 1, wherein: the clamping ring is fixed on the valve plate body through a connecting piece.

8. The butterfly valve with a skeletal structure seal of claim 7, wherein: the connecting piece adopts full thread screw.

9. The butterfly valve with a skeletal structure seal of claim 8, wherein: the mounting hole for mounting the connecting piece on the compression ring adopts a sunk platform hole structure.

10. A butterfly valve with a skeletal structure seal in accordance with any of claims 1 to 9, wherein: the base body part and the supporting part of the sealing element are of an integrally formed structure.