CN214534551U

CN214534551U - Hard seal butterfly valve

Info

Publication number: CN214534551U
Application number: CN202120376350.3U
Authority: CN
Inventors: 王建
Original assignee: Hebei Shivalve Mechanical Equipment Co ltd
Current assignee: Hebei Shivalve Machinery Equipment Co ltd
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-10-29
Anticipated expiration: 2031-02-19

Abstract

The utility model relates to a butterfly valve technical field just discloses a hard seal butterfly valve, and it is including the valve body that is the cylinder, the interior week side fixedly connected with sealing washer of valve body, it has the butterfly plate to peg graft in the inside of valve body, the circumference surface of butterfly plate is formed with and is 5 oblique angle and its axial skew mutually with the axial of valve body, just the circumference surface of butterfly plate contacts with the interior week side of sealing washer, be provided with in the valve body and be used for controlling butterfly plate pivoted valve rod. The utility model discloses a oblique angle that butterfly plate circumferential surface formed, the circumferential surface of butterfly plate can directly break away from the sealing washer like this, and can not rub the surface of sealing washer, when the butterfly plate is closing, its circumferential surface is contradicted on the sealing washer, also can not produce great friction with the sealing washer, compare traditional butterfly valve and can avoid operating personnel can feel hard the condition when opening or closing the butterfly valve, and avoided producing the problem that wearing and tearing lead to the butterfly valve leakproofness to reduce because of the friction between sealing washer and the butterfly plate.

Description

Hard seal butterfly valve

Technical Field

The utility model belongs to the technical field of the butterfly valve, specifically be a butterfly valve sealed firmly.

Background

A butterfly valve, also called a flap 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 which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling.

At present, when the butterfly valve is in a closed state, the circumferential surface of a butterfly plate can be in close contact with a sealing ring in a valve body, when the butterfly plate rotates to open and close the valve, large friction is generated between the butterfly plate and the sealing ring, and generated friction resistance is large, so that firstly, an operator can work harder when the valve is opened and closed, secondly, the butterfly plate and the sealing ring can be abraded for multiple times to generate a gap, and therefore the sealing performance of the butterfly valve is influenced, and therefore, the hard sealing butterfly valve is designed to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problem provided in the background art, the utility model provides a butterfly valve sealed firmly.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a hard seal butterfly valve, is including the valve body that is the cylinder, the interior week side fixedly connected with sealing washer of valve body, the inside of valve body is pegged graft and is had the butterfly plate, the circumferential surface of butterfly plate is formed with and is 5 oblique angles and its axial and the axial of valve body skew mutually, just the circumferential surface of butterfly plate contacts with the interior week side of sealing washer, be provided with in the valve body and be used for controlling butterfly plate pivoted valve rod.

Further, the sealing ring is a waterproof rubber ring.

Further, the butterfly plate is a stainless steel plate.

Further, the top intercommunication of valve body has the hollow rod that is vertical direction, the top fixed mounting of hollow rod has the gear commutator, the valve rod passes through the bearing and rotates the grafting at the valve body top, the bottom mounting of valve rod is pegged graft in the butterfly plate, the top of valve rod runs through hollow rod and fixed connection on the output of gear commutator, the input fixedly connected with of gear commutator and valve rod looks vertically pivot, the one end fixedly connected with hand wheel of gear commutator is kept away from in the pivot.

Furthermore, the inner wall of the hollow rod is fixedly connected with a waterproof silica gel ring.

Furthermore, a plurality of preformed holes for fixing the valve body on the water pipe through bolts are formed in the end face of the valve body.

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

the utility model discloses an oblique angle that butterfly plate circumferential surface formed, thus, because butterfly plate axial and valve body axial skew mutually, the axial of butterfly plate toward being close to the axial direction of valve body when opening the valve rotates, the circumferential surface of butterfly plate can directly break away from the sealing washer like this, and can not rub the surface of sealing washer, when the butterfly plate is closing, its circumferential surface is contradicted on the sealing washer, also can not produce great friction with the sealing washer, compare the condition that operating personnel can feel hard when opening or closing the butterfly valve that traditional butterfly valve can be avoided, and avoided producing the problem that wearing and tearing lead to the butterfly valve leakproofness to reduce because of the friction between sealing washer and the butterfly plate.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and 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 and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view taken along the direction A-A of the present invention;

in the figure: 1. a valve body; 2. a seal ring; 3. a butterfly plate; 4. a valve stem; 5. a hollow shaft; 6. a gear commutator; 7. a rotating shaft; 8. a hand wheel; 9. holes are reserved.

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 some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, the present embodiment provides a hard seal butterfly valve, including a cylindrical valve body 1, a seal ring 2 fixedly connected to an inner peripheral side of the valve body 1, a butterfly plate 3 inserted into the valve body 1, a circumferential surface of the butterfly plate 3 having an oblique angle of 5 ° and axially offset from an axial direction of the valve body 1, and the circumferential surface of the butterfly plate 3 contacting the inner peripheral side of the seal ring 2, and a valve rod 4 arranged in the valve body 1 for controlling rotation of the butterfly plate 3, wherein due to the fact that the butterfly plate 3 axially offset from the valve body 1, when the valve is opened, the axial direction of the butterfly plate 3 is rotated toward a direction close to the axial direction of the valve body 1, so that two sides of the circumferential surface of the butterfly plate 3 can be directly separated from the seal ring 2 without friction against the surface of the seal ring 2, when the butterfly plate 3 is closed, the circumferential surface thereof is abutted against the seal ring 2, also can not produce great friction with sealing washer 2, compare traditional butterfly valve and can effectually reduce the friction between butterfly plate 3 and the sealing washer 2, avoid operating personnel can feel hard the condition when opening or closing the butterfly valve, and reduced between sealing washer 2 and the butterfly plate 3 because of the friction produces the possibility that wearing and tearing lead to the butterfly valve leakproofness to reduce.

Specifically, the sealing ring 2 is a waterproof rubber ring, and the waterproof rubber ring has good elasticity and plasticity, can well fill the gap between the butterfly plate 3 and the valve body 1, and is an ideal choice.

Moreover, the butterfly plate 3 can be made of stainless steel plates which can avoid the problems of corrosion and rusting in water for a long time, and the design is more reasonable.

Referring to fig. 1, a specific manner of rotating the butterfly plate 3 is as follows, the top of the valve body 1 is communicated with a hollow rod 5 in a vertical direction, a gear commutator 6 is fixedly installed at the top of the hollow rod 5, the valve rod 4 is rotatably inserted into the top of the valve body 1 through a bearing, the bottom end of the valve rod 4 is fixedly inserted into the butterfly plate 3, the top end of the valve rod 4 penetrates through the hollow rod 5 and is fixedly connected to the output end of the gear commutator 6, the input end of the gear commutator 6 is fixedly connected with a rotating shaft 7 perpendicular to the valve rod 4, and one end of the rotating shaft 7 far away from the gear commutator 6 is fixedly connected with a hand wheel 8.

Preferably, the hollow rod 5 inner wall fixedly connected with waterproof silica gel circle, waterproof silica gel circle have the elasticity and the plasticity of preferred, can be better fill the space between hollow rod 5 and the valve rod 4 to avoid the water in the valve body 1 to flow out from hollow rod 5, be an ideal selection.

Simultaneously, as shown in fig. 1, a plurality of preformed holes 9 used for fixing the valve body 1 on the water pipe through bolts are formed in the end face of the valve body 1, so that the valve body 1 can be conveniently installed on the water pipe, and the design is more reasonable.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hard seal butterfly valve, is including being cylindrical valve body (1), its characterized in that, the interior periphery fixedly connected with sealing washer (2) of valve body (1), the inside grafting of valve body (1) has butterfly plate (3), the circumferential surface of butterfly plate (3) is formed with and is 5 oblique angles and its axial and the axial of valve body (1) skew mutually, just the circumferential surface of butterfly plate (3) contacts with the interior periphery of sealing washer (2), be provided with in valve body (1) and be used for controlling butterfly plate (3) pivoted valve rod (4).

2. A hard-sealing butterfly valve according to claim 1, characterised in that said sealing ring (2) is a waterproof rubber ring.

3. A hard-sealing butterfly valve according to claim 1, characterised in that said butterfly plate (3) is a stainless steel plate.

4. The hard seal butterfly valve according to claim 1, wherein a hollow rod (5) in a vertical direction is communicated with the top of the valve body (1), a gear reverser (6) is fixedly installed at the top of the hollow rod (5), the valve rod (4) is rotatably inserted into the top of the valve body (1) through a bearing, the bottom end of the valve rod (4) is fixedly inserted into the butterfly plate (3), the top end of the valve rod (4) penetrates through the hollow rod (5) and is fixedly connected to the output end of the gear reverser (6), the input end of the gear reverser (6) is fixedly connected with a rotating shaft (7) perpendicular to the valve rod (4), and one end of the rotating shaft (7) far away from the gear reverser (6) is fixedly connected with a hand wheel (8).

5. A hard sealing butterfly valve according to claim 4, characterized in that a waterproof silicone ring is fixedly connected to the inner wall of the hollow rod (5).

6. A hard sealing butterfly valve according to claim 1, characterised in that the end face of the valve body (1) is provided with a plurality of prepared holes (9) for fixing the valve body (1) on a water pipe by bolts.