CN217081453U

CN217081453U - Butterfly valve

Info

Publication number: CN217081453U
Application number: CN202220680101.8U
Authority: CN
Inventors: 徐海涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-07-29
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a butterfly valve relates to pipeline annex technical field, including the butterfly valve including the main valve body that has the valve pocket, be located the dish board in the valve pocket, with the valve rod of main valve body coupling, be located the valve pocket and with main valve body integrated into one piece's shutoff seal structure, the valve rod is used for driving the dish board and rotates, wherein, the dish board includes the interior dish board of being connected with the valve rod, surround the outer dish board of dish board periphery including, outer dish board passes through connection structure detachably sealing connection with interior dish board, outer dish board can with shut off the cooperation of seal structure scarf, block the valve pocket with sealing. So set up, it is high to have solved the dismouting, the change degree of difficulty in the butterfly valve use maintenance process among the prior art, and the difficult problem of guaranteeing of the sealed degree of face.

Description

Butterfly valve

Technical Field

The utility model relates to a pipeline annex technical field, more specifically say, relate to a butterfly valve.

Background

Butterfly valves are a common type of water flow control component in fluid delivery systems and are commonly used for on-off control of low pressure pipe media. Generally, a butterfly valve refers to a valve in which a closing member (a valve flap or a butterfly plate) is a disk that rotates about a valve axis to open and close.

However, the applicant has found that after a certain service time, the butterfly valve in the prior art is opened and closed for many times, and the sealing surface at the edge of the butterfly plate is worn, so that the butterfly valve is poor in shutoff effect and cannot be used continuously.

Therefore, how to solve the problems that the butterfly valve in the prior art is high in difficulty in dismounting and replacing in the using and maintaining process, and the sealing degree of the sealing surface is not easy to guarantee becomes an important technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a butterfly valve, it has solved the dismouting, the change degree of difficulty height that use in the maintenance process than the butterfly valve among the prior art, and the difficult problem of guaranteeing of the degree of tightness of sealed face. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of butterfly valve, include:

a main valve body having a valve cavity;

a disc plate located in the valve cavity;

the valve rod is connected with the main valve body and is used for driving the disc plate to rotate;

the shutoff sealing structure is positioned in the valve cavity and integrally formed with the main valve body; wherein the content of the first and second substances,

the dish board include with interior dish board, the encirclement that the valve rod is connected are in the outer dish board of interior dish board periphery, outer dish board with interior dish board passes through connection structure detachably sealing connection, outer dish board can with shut off seal structure scarf cooperation, in order to seal and block the valve pocket.

Preferably, connection structure includes first sealing washer and second sealing washer, first sealing washer cover meet the water side interior dish board with the department of meeting of outer dish board, first sealing washer with interior dish board welding, just first sealing washer through first fastener with outer dish board fastening connects, the second sealing washer covers in the side of being away from the water interior dish board with the department of meeting of outer dish board, the second sealing washer with outer dish board welding, just the second sealing washer through the second fastener with interior dish board fastening connects.

Preferably, be equipped with the confession on the side of meeting water of dish board first ring channel of first sealing washer scarf joint, be equipped with the confession on the leeward side of dish board the second ring channel of second sealing washer scarf joint, the inner edge of first sealing washer with interior dish board welding, the outer fringe of second sealing washer with outer dish board welding.

Preferably, the shut-off sealing structure is provided with a wedge-shaped inner ring surface with the inner diameter of the water facing side larger than that of the back water side, and the outer edge of the outer dish plate is matched with the wedge-shaped inner ring surface.

Preferably, an integrally formed convex column is arranged at the center of the water facing side of the inner disc plate, and the convex column is fixedly connected with the valve rod.

Preferably, the first fastening piece and the second fastening piece are provided with a plurality of annular uniform distribution.

Preferably, the first fastener and the second fastener are both screws.

Preferably, the first sealing ring and the second sealing ring are both made of stainless steel.

Preferably, the joint of the inner disc plate and the outer disc plate is in wedge surface fit.

The utility model provides an among the technical scheme, the butterfly valve is including the main valve body that has the valve pocket, be arranged in the butterfly plate of valve pocket, the valve rod with main valve body coupling, be arranged in the valve pocket and with main valve body integrated into one piece's shutoff seal structure, the valve rod is used for driving the rotation of dish board, wherein, the dish board includes the interior dish board of being connected with the valve rod, surround the outer dish board of dish board periphery including, outer dish board passes through connection structure detachably sealing connection with interior dish board, outer dish board can with shut off the cooperation of seal structure wedge face, block the valve pocket with sealing. So set up, the dish board split is interior dish board and outer dish board, the structure that receives wearing and tearing is at the dish board rotation in-process, produce the outer dish board of contact wear with the shutoff seal structure, and interior dish board is connected with the valve rod, so when the butterfly valve is maintained to needs, only need with outer dish board change and utilize connection structure realize sealing connection again can, realize not dismantling the butterfly valve wholly and realize changing the wearing and tearing position, and simultaneously, when the dish board is in the shutoff position, the shutoff seal structure scarf cooperation in outer dish board and the valve pocket, the degree of tightness of sealed face has also been guaranteed, the dismouting in the butterfly valve use maintenance process among the prior art has been solved, the change degree of difficulty is high, and the difficult problem of guaranteeing of the degree of tightness of sealed face.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a butterfly valve according to an embodiment of the present invention;

fig. 2 is a schematic view of the butterfly valve according to the embodiment of the present invention.

In fig. 1-2:

1. a main valve body; 2. a valve cavity; 3. a valve stem; 4. the sealing structure is turned off; 5. an inner dish plate; 6. an outer dish plate; 7. a first seal ring; 8. a second seal ring; 9. a first fastener; 10. a second fastener; 11. a convex column.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. 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 invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

An object of this embodiment is to provide a butterfly valve, it can solve the butterfly valve among the prior art and use the dismouting, the change degree of difficulty in the maintenance process high, and the difficult problem of guaranteeing of the sealed degree of face.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1-2, the present embodiment provides a butterfly valve, which includes a main valve body 1 having a valve cavity 2, a disc plate located in the valve cavity 2, a valve rod 3 connected to the main valve body 1, and a shut-off sealing structure 4 located in the valve cavity 2 and integrally formed with the main valve body 1, wherein the valve rod 3 is configured to drive the disc plate to rotate, the disc plate includes an inner disc plate 5 connected to the valve rod 3 and an outer disc plate 6 surrounding the outer periphery of the inner disc plate 5, the inner disc plate 5 is in a circular cake shape, the outer disc plate 6 is in an annular shape, the outer disc plate 6 is detachably and sealingly connected to the inner disc plate 5 through a connecting structure, and the outer disc plate 6 can be in wedge-face fit with the shut-off sealing structure 4 to sealingly block the valve cavity 2. So set up, the dish board split is interior dish board 5 and outer dish board 6, the structure that receives wearing and tearing is at the dish board rotation in-process, outer dish board 6 with shutoff seal structure 4 produces contact wear, and interior dish board 5 is connected with valve rod 3, so when needing to maintain the butterfly valve, only need with outer dish board 6 change and utilize connection structure realize sealing connection again can, realize not dismantling the butterfly valve wholly and realize changing the wearing and tearing position, and simultaneously, when the dish board is in the shutoff position, outer dish board 6 cooperates with shutoff seal structure 4 wedge surfaces in the valve pocket 2, the degree of sealing of sealed face has also been guaranteed, the dismouting in the butterfly valve use maintenance process among the prior art has been solved, the change degree of difficulty is high, and the difficult problem of guaranteeing of the degree of sealing of sealed face.

As a specific embodiment, the connection structure may include a first seal ring 7 and a second seal ring 8, both the first seal ring 7 and the second seal ring 8 have a certain ring width, the first seal ring 7 covers a joint of the inner disc 5 and the outer disc 6 on the water facing side, the first seal ring 7 is welded to the inner disc 5, and the first seal ring 7 is fastened to the outer disc 6 through a first fastening member 9, that is, the first fastening member 9 passes through the first seal ring 7 and is screwed into the outer disc 6, the second seal ring 8 covers a joint of the inner disc 5 and the outer disc 6 on the water facing side, the second seal ring 8 is welded to the outer disc 6, and the second seal ring 8 is fastened to the inner disc 5 through a second fastening member 10, that is, the second fastening member 10 passes through the second seal ring 8 and is screwed into the inner disc 5. The water-facing side and the backwater side are naturally divided into a water-facing side for bearing water pressure and an opposite backwater side on the other side under the influence of the water flow direction.

In addition, preferably set up first fastener 9 and second fastener 10 and all be equipped with a plurality of annular evenly distributed, first fastener 9 and second fastener 10 are the screw, specifically can be hexagon socket head cap screw, are equipped with the screw through-hole on first sealing washer 7 and the second sealing washer 8 correspondingly, are equipped with screw blind hole or screw through-hole on interior dish board 5 and the outer dish board 6 correspondingly.

Further, be equipped with the first ring channel that supplies the scarf joint of first sealing washer 7 on the side of meeting water of dish board, be equipped with the second ring channel that supplies the scarf joint of second sealing washer 8 on the back of the water side of dish board, the inner edge and the interior dish 5 welding of first sealing washer 7, the outer fringe and the outer dish 6 welding of second sealing washer 8, so set up, be convenient for first sealing washer 7 and second sealing washer 8 fix a position fast, connect the installation, and in the use, first sealing washer 7 can not the displacement with second sealing washer 8 under the impact of rivers, the structure of whole dish board is firm.

More specific embodiment, shutoff seal structure 4 has the wedge inner ring face that the internal diameter of water side is greater than the internal diameter of lee side, and the outer fringe and the wedge inner ring face of outer dish 6 coincide to when making the water side pressurized of dish board, can make the outer fringe and the wedge inner ring face of outer dish 6 closer contact, sealing strength is higher.

It should be noted that, in order to cooperate with the detachable design of the disk plate and prevent the outer disk plate 6 from being easily blocked during the replacement process, an integrally formed protruding column 11 is disposed at the center of the water facing side of the inner disk plate 5 in this embodiment, the protruding column 11 is fixedly connected with the valve rod 3, and the valve rod 3 rotates to drive the disk plate to integrally rotate.

As a preferred embodiment, the joint of the inner disk plate 5 and the outer disk plate 6 is arranged to be matched by a wedge surface, that is, the outer edge of the inner disk plate 5 is matched with the inner edge of the outer disk plate 6 by the wedge surface, so that the outer disk plate 6 can be conveniently and quickly sleeved around the inner disk plate 5.

Moreover, the first sealing ring 7 and the second sealing ring 8 are made of stainless steel, and can be specifically made of martensitic stainless steel, and the dish plate is made of carbon steel which is selected and applied in the prior art.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A butterfly valve, comprising:

a main valve body (1) having a valve chamber (2);

a disc plate located in the valve cavity (2);

the valve rod (3) is connected with the main valve body (1) and is used for driving the disc plate to rotate;

the shutoff sealing structure (4) is positioned in the valve cavity (2) and is integrally formed with the main valve body (1); wherein the content of the first and second substances,

the dish board include with interior dish board (5), the encirclement that valve rod (3) are connected are in outer dish board (6) of interior dish board (5) periphery, outer dish board (6) with interior dish board (5) are through connection structure detachably sealing connection, outer dish board (6) can with shut off seal structure (4) scarf cooperation, block with sealed valve pocket (2).

2. The butterfly valve according to claim 1, wherein the connection structure comprises a first seal ring (7) and a second seal ring (8), the first seal ring (7) covers the joint of the inner disk plate (5) and the outer disk plate (6) on the water facing side, the first seal ring (7) is welded to the inner disk plate (5), the first seal ring (7) is fixedly connected to the outer disk plate (6) through a first fastening member (9), the second seal ring (8) covers the joint of the inner disk plate (5) and the outer disk plate (6) on the water back side, the second seal ring (8) is welded to the outer disk plate (6), and the second seal ring (8) is fixedly connected to the inner disk plate (5) through a second fastening member (10).

3. The butterfly valve according to claim 2, characterized in that the disc is provided with a first annular groove on the water-facing side for the engagement of the first sealing ring (7), and a second annular groove on the water-back side for the engagement of the second sealing ring (8), the inner edge of the first sealing ring (7) being welded to the inner disc (5), and the outer edge of the second sealing ring (8) being welded to the outer disc (6).

4. The butterfly valve according to claim 1, wherein the shut-off seal (4) has a wedge-shaped inner annular surface with a larger inner diameter on the water-facing side than on the water-backing side, and the outer edge of the outer disk (6) fits into the wedge-shaped inner annular surface.

5. The butterfly valve according to claim 1, wherein the center of the water facing side of the inner disc (5) is provided with an integrally formed boss (11), and the boss (11) is fixedly connected with the valve rod (3).

6. The butterfly valve according to claim 2, characterized in that said first fastening member (9) and said second fastening member (10) are each provided in a plurality, uniformly distributed in a ring.

7. The butterfly valve according to claim 2, characterized in that said first fastening member (9) and said second fastening member (10) are both screws.

8. The butterfly valve according to claim 2, characterized in that said first sealing ring (7) and said second sealing ring (8) are made of stainless steel.

9. The butterfly valve according to claim 1, wherein the connection between the inner disk plate (5) and the outer disk plate (6) is a wedge surface fit.