CN110285222B

CN110285222B - Durable butterfly valve

Info

Publication number: CN110285222B
Application number: CN201910555941.4A
Authority: CN
Inventors: 何佳俊; 吴文忠
Original assignee: Ouguan Valve Technology Co ltd
Current assignee: OUGUAN VALVE TECHNOLOGY Co.,Ltd.
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-11-10
Anticipated expiration: 2039-06-25
Also published as: CN110285222A

Abstract

The invention discloses a durable butterfly valve which comprises a valve shell, wherein a cylindrical passage is arranged in the valve shell, an upper passage is formed in the valve shell, a valve rod is rotatably connected in the upper passage, one side, positioned in the valve shell, of the valve rod is fixedly connected with a disc, outer rings on two sides of the disc are glued with a rubber strip, and each rubber strip is close to two sides of the disc. In the valve, the disc is provided with the thin tube, the push rod and other partial structures, when the butterfly valve is in an opening state, the piston in the box body moves under the action of the spring, so that the box body absorbs and stores fluid from the valve shell, when the valve is closed, the push rod is propped against the inner wall of the valve shell to drive the piston to move, the fluid in the box body is extruded out from the thin tube, a flushing effect is generated on the joint of the disc and the valve shell, the residual stain on the joint is avoided, the stain is prevented from being extruded on the valve shell and the disc to be damaged, and the valve has better durability.

Description

Durable butterfly valve

Technical Field

The invention relates to the technical field of valves, in particular to a durable butterfly valve.

Background

The valve is the most common mechanism in pipeline transportation, mainly plays a role in controlling the circulation and the disconnection of fluid in a pipeline, is called a butterfly valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve with a closing member (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to achieve opening and closing.

The butterfly plate is required to be frequently driven to rotate in the use process of the butterfly valve, if the butterfly plate can achieve good sealing effect with the inner cavity of the valve body, the butterfly plate is often required to be tightly abutted against the inner wall of the valve body, in the actual use process, certain stains often appear in the valve body, if the stains stay at the contact part of the butterfly plate and the valve body, when the butterfly plate rotates to be tightly pressed against the inner wall of the valve body, dirt is easily extruded at a gap between the butterfly plate and the valve body, because of the existence of stains, the butterfly plate can not keep good tightness with the valve body, and the valve is not tightly closed, so the valve is often screwed by force in real life, at the moment, stains are easy to flow down on the inner wall of the butterfly plate or the valve body under the extrusion of a large force, and obvious scars are formed.

Disclosure of Invention

The invention aims to solve the problem that the service life of a butterfly valve in the prior art is short, and provides a durable butterfly valve.

In order to achieve the purpose, the invention adopts the following technical scheme:

a durable butterfly valve comprises a valve casing, wherein a cylindrical passage is arranged inside the valve casing, an upper passage is arranged on the valve casing, a valve rod is connected in the upper passage in a rotating manner, one side of the valve rod, which is positioned in the valve casing, is fixedly connected with a disc, the outer rings of the two sides of the disc are both glued with a rubber strip, each rubber strip is close to the two sides of the disc, a cylindrical cavity is arranged inside the disc, the side wall of the cylindrical cavity is communicated with a plurality of thin tubes, one ends of the thin tubes, which are far away from the cylindrical cavity, are communicated with the valve casing, the thin tubes and one ends, which are far away from the cylindrical cavity, are positioned between the two rubber strips, the two sides of the cylindrical cavity are communicated with a thick tube, each thick tube is communicated with a box body, a piston is connected in the box body in a sealing and sliding manner, one end, which is, one end of each piston, which is far away from the push rod, is fixedly connected with a spring, and one end of each spring, which is far away from the piston, is abutted against the inner wall of the box body;

the outer fixedly connected with protecting cover of valve casing, the valve rod runs through the protecting cover, the valve rod rotates with the protecting cover to be connected, a knob of one end fixedly connected with of video disc is kept away from to the valve rod, be provided with anti-skidding line on the knob.

Preferably, the valve rod and the inner wall of the upper channel are connected with a plurality of sealing rings together, and the sealing rings are combined gaskets.

Preferably, one end of the push rod, which is far away from the piston, is of a hemispherical structure.

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

in the valve, the disc is provided with the thin tube, the push rod and other partial structures, when the butterfly valve is in an opening state, the piston in the box body moves under the action of the spring, so that the box body absorbs and stores fluid from the valve shell, when the valve is closed, the push rod is propped against the inner wall of the valve shell to drive the piston to move, the fluid in the box body is extruded out from the thin tube, a flushing effect is generated on the joint of the disc and the valve shell, the residual stain on the joint is avoided, the stain is prevented from being extruded on the valve shell and the disc to be damaged, and the valve has better durability.

Drawings

FIG. 1 is a schematic structural diagram of a durable butterfly valve according to the present invention;

FIG. 2 is a schematic structural diagram of a disk portion of a durable butterfly valve according to the present invention;

FIG. 3 is a side view of a disk portion of a durable butterfly valve in accordance with the present invention;

fig. 4 is an enlarged schematic view of a portion a of fig. 2.

In the figure: 1 valve shell, 2 upper channels, 3 valve rods, 4 protecting covers, 5 sealing rings, 6 discs, 7 rubber strips, 8 columnar cavities, 9 thin tubes, 10 box bodies, 11 pistons, 12 push rods, 13 springs, 14 thick tubes and 15 knobs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, a durable butterfly valve comprises a valve housing 1, a cylindrical passage is arranged inside the valve housing 1, an upper passage 2 is arranged on the valve housing 1, a valve rod 3 is connected in the upper passage 2 in a rotating manner, one side of the valve rod 3 in the valve housing 1 is fixedly connected with a disc 6, rubber strips 7 are glued on the outer rings of two sides of the disc 6, each rubber strip 7 is close to two sides of the disc 6, a columnar cavity 8 is arranged inside the disc 6, the side wall of the columnar cavity 8 is communicated with a plurality of thin tubes 9, one ends of the thin tubes 9 far away from the columnar cavity 8 are communicated with the valve housing 1, the thin tubes 9 and one ends far away from the columnar cavity 8 are positioned between the two rubber strips 7, two sides of the columnar cavity 8 are communicated with a thick tube 14, each thick tube 14 is communicated with a box body 10, and a piston 11 is connected in the box body 10 in a sealing and, a push rod 12 is fixedly welded at one end of the piston 11 far away from the thick pipe 14, the push rod 12 penetrates through the side wall of the disc 6 and is in sliding connection with the disc 6, one end of each piston 11 far away from the push rod 12 is fixedly connected with a spring 13, and one end of each spring 13 far away from the piston 11 is abutted against the inner wall of the box body 10.

The valve rod 3 and the inner wall of the upper channel 2 are connected with a plurality of sealing rings 5 together, so that the situation of water leakage at the upper channel 2 is avoided; the sealing ring 5 adopts a combined gasket, so that better sealing effect is realized due to better waterproof performance; the end of the push rod 12 far away from the piston 11 is of a hemispherical structure, and when the push rod 12 is abutted against the inner wall of the valve casing 1, the friction loss between the push rod 12 and the valve casing is reduced.

A protecting cover 4 is fixedly connected outside the valve shell 1, the valve rod 3 penetrates through the protecting cover 4, the valve rod 3 is rotatably connected with the protecting cover 4, the protecting cover 4 can play a role of protecting part of the structure of the upper channel 2, meanwhile, the valve rod 3 can be always kept in the position state, and the phenomenon that the valve rod 3 swings to influence the running of the disc 6 in the valve shell 1 is avoided; one end of the valve rod 3, which is far away from the disc 6, is fixedly connected with a knob 15, and the knob 15 is provided with anti-skid grains, so that a user can conveniently operate the device to open and close.

The invention can be illustrated by the following operating modes:

in the invention, a user can rotate the valve rod 3 to drive the disc 6 to rotate, when the disc 6 is vertical to the direction of the valve shell 1, the disc 6 and the rubber strip 7 tightly abut against the inner wall of the valve shell 1 together, so that the effect of closing the valve is realized, when the valve rod 3 is rotated, the disc 6 synchronously rotates along with the valve rod, at the moment, the piston 11 moves towards two sides under the action of the spring 13, so that the push rod 12 extends out from two sides of the disc 6, and at the moment, a negative pressure effect is generated in the thin tube 9 and the box body 10 to absorb fluid from the valve shell 1 and store the fluid in the box body 10.

When the valve needs to be closed, the valve rod 3 is rotated until the disc 6 is vertical to the inner wall of the valve casing 1, in the process, the push rod 12 always pushes against the inner wall of the valve casing 1 to drive the piston 11 to move in the box body 10, fluid in the box body 10 is extruded out from the thin tube 9, the joint of the disc 6 and the valve casing 1 is washed, and the situation that dirt is accumulated on the joint of the disc 6 and the valve casing 1 scratches the valve casing 1 or the disc 6 is avoided. Therefore, the damage degree of the disc 6 and the valve casing 1 can be greatly reduced, and the service life of the valve is prolonged.

It is worth mentioning that: the connecting part of the thin tube 9 and the valve casing 1 in the device is provided with a filter screen, so that the thin tube 9 is prevented from being blocked by stains.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a durable butterfly valve, includes valve casing (1), its characterized in that, valve casing (1) inside is provided with columniform passageway, passageway (2) have been seted up on valve casing (1), it is connected with valve rod (3) to go up passageway (2) internal rotation, one side fixedly connected with video disc (6) that valve rod (3) are located valve casing (1), the outer lane of video disc (6) both sides all is glued a adhesive tape (7), every adhesive tape (7) all are close to the both sides of video disc (6), a column chamber (8) has been seted up to the inside of video disc (6), the lateral wall intercommunication of column chamber (8) has a plurality of tubules (9), the one end and valve casing (1) intercommunication of column chamber (8) are kept away from to tubule (9), the one end that column chamber (8) were kept away from to tubule (9) is located between two adhesive tapes (7), the both sides of column chamber (8) all communicate there is a thick pipe (, each thick tube (14) is communicated with a box body (10), a piston (11) is connected in the box body (10) in a sealing and sliding mode, a push rod (12) is fixedly welded at one end, far away from the thick tube (14), of the piston (11), the push rod (12) penetrates through the side wall of the disc (6) and is connected with the disc (6) in a sliding mode, one end, far away from the push rod (12), of each piston (11) is fixedly connected with a spring (13), and one end, far away from the piston (11), of each spring (13) abuts against the inner wall of the box body (10);

valve casing (1) outer fixedly connected with protecting cover (4), protecting cover (4) are run through in valve rod (3), valve rod (3) are rotated with protecting cover (4) and are connected, knob (15) of one end fixedly connected with of video disc (6) are kept away from in valve rod (3), be provided with anti-skidding line on knob (15).

2. A durable butterfly valve according to claim 1, characterised in that a plurality of sealing rings (5) are arranged between the valve stem (3) and the inner wall of the upper channel (2), said sealing rings (5) being combined gaskets.

3. A durable butterfly valve according to claim 1, characterised in that the end of the push rod (12) remote from the piston (11) is of hemispherical configuration.