CN215720893U

CN215720893U - Hard seal butterfly valve

Info

Publication number: CN215720893U
Application number: CN202121869833.3U
Authority: CN
Inventors: 黄建林; 徐嘉驰; 朱正杰; 柯伟芳
Original assignee: Sungo Valves Group Co ltd
Current assignee: Sungo Valves Group Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-01
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a hard sealing butterfly valve which comprises a motor, wherein a fixed rod is arranged below the motor, a valve body is fixedly arranged at the lower end of the fixed rod, a butterfly plate is clamped on the inner wall of the valve body, a rotating rod is clamped inside the fixed rod, annular sealing rubber rings are arranged at positions, located on two sides of the butterfly plate, on the inner wall of the valve body, annular rubber pipes are fixedly arranged on the outer surfaces of the annular sealing rubber rings, rectangular empty bins are arranged at positions, located on the outer side of the annular rubber pipes, on the inner wall of the valve body, a rotating sleeve is arranged on the bottom end face of the valve body, and a hand wheel is arranged on one side of the motor. The butterfly plate sealing structure is provided with the two annular sealing rubber rings, so that the sealing performance of the outer edge of the butterfly plate can be improved, the annular sealing rubber rings can be contracted by arranging the annular rubber pipes, the annular sealing rubber rings can be kept sealed when needed due to contraction and rebound of the annular rubber pipes, the rotation of the butterfly plate cannot be influenced when not needed, and the butterfly plate sealing structure is more flexible.

Description

Hard seal butterfly valve

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a hard sealing butterfly valve.

Background

A hard sealing butterfly valve, also called a flap valve, is a regulating valve with simple structure and can be used for on-off control of low-pressure pipeline media. A hard sealing butterfly valve mainly plays the role of cutting off and throttling on a pipeline. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved. A hard sealed butterfly valve is suitable for pipelines for conveying various corrosive and non-corrosive fluid media in producer furnaces, coal gas, steam, natural gas, city gas, cold and hot air, chemical smelting engineering and power generation environmental protection systems, and is used for regulating and cutting off the flow of the media. A hard seal butterfly valve can be divided into a manual hard seal butterfly valve, a pneumatic hard seal butterfly valve and an electric hard seal butterfly valve.

However, the existing hard seal butterfly valve usually has a reduced sealing effect due to abrasion between the disc plate and the cylinder body in the long-term repeated opening and closing operation process; thus, the existing requirements are not met, and a hard seal butterfly valve is provided for the purpose.

SUMMERY OF THE UTILITY MODEL

The present invention provides a hard seal butterfly valve, which solves the problem that the sealing effect is often reduced due to the abrasion between the disc plate and the cylinder body during the long-term repeated opening and closing operation of the existing hard seal butterfly valve proposed in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a hard sealed butterfly valve, includes the motor, the dead lever is installed to the below of motor, the lower extreme fixed mounting of dead lever has the valve body, the inner wall card of valve body has the butterfly plate, the inside card of dead lever has the bull stick, the position that the valve body inner wall is located the butterfly plate both sides all is provided with annular sealing rubber ring, the equal fixed mounting in surface of annular sealing rubber ring has annular rubber tube, the position that the valve body inner wall is located the annular rubber tube outside all is provided with the rectangle empty storehouse, the bottom face of valve body is provided with the commentaries on classics cover, one side of motor is provided with the hand wheel.

Preferably, the valve body and the fixed rod are fixedly connected through welding, and the fixed rod is fixedly connected with the motor through a bolt.

Preferably, the top end of the rotating rod penetrates through the fixing rod to be connected with the motor, the outer surface of the bottom end of the rotating rod is clamped in the inner wall of the rotating sleeve, and the rotating sleeve is connected with the valve body through a bolt.

Preferably, annular sealing rubber ring and annular rubber tube are integrated into one piece structure, the surface of rectangle empty storehouse is provided with annular opening, annular sealing rubber ring's surface thickness is the same with annular opening's width.

Preferably, the outer surface of the butterfly plate is attached to the inner wall of the valve body, and the butterfly plate is connected with the rotating rod through a bolt.

Preferably, the width of the rectangular empty bin is equal to the outer diameter of the annular rubber tube, and the distance between the two annular sealing rubber rings is equal to the thickness of the butterfly plate.

Compared with the prior art, the utility model has the beneficial effects that: this kind of butterfly valve sealed firmly through being provided with two annular sealing rubber ring, can improve the sealing performance at butterfly plate outside border, through setting up annular rubber tube, makes annular sealing rubber ring can shrink, and the shrink of annular rubber tube can make annular sealing rubber ring keep sealed when needing with kick-back, can not influence the rotation of butterfly plate when not needing yet, and is more nimble.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a schematic structural view of the integral front end face of the present invention;

FIG. 3 is a side view of the present invention in its entirety;

fig. 4 is a schematic view of the internal structure of the rectangular empty bin of the present invention.

In the figure: 1. a valve body; 2. a butterfly plate; 3. fixing the rod; 4. a hand wheel; 5. a rotating rod; 6. an annular sealing rubber ring; 7. rotating the sleeve; 8. rectangular empty bins; 9. an annular rubber tube; 10. an electric motor.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a hard seal butterfly valve, including motor 10, dead lever 3 is installed to the below of motor 10, the lower extreme fixed mounting of dead lever 3 has valve body 1, the inner wall card of valve body 1 has butterfly plate 2, the inside card of dead lever 3 has bull stick 5, the position that 1 inner wall of valve body is located butterfly plate 2 both sides all is provided with annular sealing rubber ring 6, the equal fixed mounting in surface of annular sealing rubber ring 6 has annular rubber tube 9, the position that 1 inner wall of valve body is located the annular rubber tube 9 outside all is provided with rectangle empty storehouse 8, the bottom face of valve body 1 is provided with changes cover 7, one side of motor 10 is provided with hand wheel 4.

In the utility model: valve body 1 and dead lever 3 are through welded fixed connection, and dead lever 3 passes through bolt and motor 10 fixed connection to can separate motor 10 and dead lever 3 through the bolt, and then be convenient for the split maintenance.

In the utility model: the top end of the rotating rod 5 penetrates through the fixed rod 3 to be connected with the motor 10, the outer surface of the bottom end of the rotating rod 5 is clamped in the inner wall of the rotating sleeve 7, the rotating sleeve 7 is connected with the valve body 1 through a bolt, two ends of the rotating rod 5 are respectively fixed between the motor 10 and the rotating sleeve 7, and the rotation of the butterfly plate 2 can keep the center stable.

In the utility model: annular seal rubber ring 6 and annular rubber tube 9 are integrated into one piece structure, and the surface of rectangle empty storehouse 8 is provided with annular opening, and annular seal rubber ring 6's surface thickness is the same with annular opening's width, makes annular seal rubber ring 6 card in annular opening's inner wall, can contract in annular opening along with annular rubber tube 9's deformation.

In the utility model: the surface of butterfly plate 2 and the inner wall laminating of valve body 1, butterfly plate 2 passes through the bolt to be connected with bull stick 5, drives butterfly plate 2 through bull stick 5 and rotates in the inside of valve body 1.

In the utility model: the width of the rectangular empty bin 8 is equal to the outer diameter of the annular rubber tube 9, and the distance between the two annular sealing rubber rings 6 is equal to the thickness of the butterfly plate 2, so that the outer edge of the butterfly plate 2 is kept sealed through the two annular sealing rubber rings 6.

The working principle is as follows: during the use, install this kind of butterfly valve sealed firmly, the inspection is ensured can the normal use after, drive bull stick 5 through starter motor 10 and rotate, bull stick 5 drives butterfly plate 2 and rotates, thereby can control switch, when butterfly plate 2 rotates, can extrude annular seal rubber ring 6 of a side, annular seal rubber ring 6 forms the extrusion to annular rubber tube 9, annular rubber tube 9 takes place to warp in the inside of rectangle empty storehouse 8, thereby make annular seal rubber ring 6 can shrink, do not influence the rotation of butterfly plate 2, after butterfly plate 2 closes, annular rubber tube 9 kick-backs and outwards ejecting annular seal rubber ring 6, thereby make butterfly plate 2 keep sealed through two annular seal rubber rings 6, effectual improvement is sealed the effect.

In summary, the following steps: through being provided with two annular rubber seal rings 6, can improve the sealing performance at 2 outer borders of butterfly plate, through setting up annular rubber tube 9, make annular rubber seal ring 6 can shrink, annular rubber tube 9's shrink and resilience can make annular rubber seal ring 6 keep sealed when needing, can not influence butterfly plate 2's rotation when not needing yet, and are more nimble.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A hard seal butterfly valve comprising a motor (10), characterized in that: dead lever (3) are installed to the below of motor (10), the lower extreme fixed mounting of dead lever (3) has valve body (1), the inner wall card of valve body (1) has butterfly plate (2), the inside card of dead lever (3) has bull stick (5), the position that valve body (1) inner wall is located butterfly plate (2) both sides all is provided with annular sealing rubber ring (6), the equal fixed mounting in surface of annular sealing rubber ring (6) has annular rubber tube (9), the position that valve body (1) inner wall is located annular rubber tube (9) outside all is provided with rectangle empty storehouse (8), the bottom face of valve body (1) is provided with commentaries on classics cover (7), one side of motor (10) is provided with hand wheel (4).

2. The hard seal butterfly valve of claim 1, wherein: the valve body (1) is fixedly connected with the fixed rod (3) through welding, and the fixed rod (3) is fixedly connected with the motor (10) through a bolt.

3. The hard seal butterfly valve of claim 1, wherein: the top end of the rotating rod (5) penetrates through the fixed rod (3) to be connected with the motor (10), the outer surface of the bottom end of the rotating rod (5) is clamped in the inner wall of the rotating sleeve (7), and the rotating sleeve (7) is connected with the valve body (1) through a bolt.

4. The hard seal butterfly valve of claim 1, wherein: annular sealing rubber ring (6) and annular rubber tube (9) are the integrated into one piece structure, the surface of rectangle empty storehouse (8) is provided with annular opening, the surface thickness of annular sealing rubber ring (6) is the same with annular open-ended width.

5. The hard seal butterfly valve of claim 1, wherein: the outer surface of the butterfly plate (2) is attached to the inner wall of the valve body (1), and the butterfly plate (2) is connected with the rotating rod (5) through a bolt.

6. The hard seal butterfly valve of claim 1, wherein: the width of the rectangular empty bin (8) is equal to the outer diameter of the annular rubber tube (9), and the distance between the two annular sealing rubber rings (6) is equal to the thickness of the butterfly plate (2).