CN211875133U

CN211875133U - Center butterfly valve with high durability

Info

Publication number: CN211875133U
Application number: CN201922455675.6U
Authority: CN
Inventors: 李仕文
Original assignee: Tianjin Shiwen Valve Manufacturing Co ltd
Current assignee: Tianjin Shiwen Valve Manufacturing Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-06
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a center butterfly valve that durability is high, which comprises a valve body, the valve block, fixed nestification has the sealing washer on the inner wall of valve body, the valve block is located in the valve body and the upper and lower both ends of valve block closely cooperate with the sealing washer, it is equipped with sealed separation blade in the both sides of valve block to have on the inner wall of sealing washer, under the closed condition, the edge of valve block compresses tightly sealed separation blade in order to form sealed condition, and has the clearance between the edge of valve block and the inner wall of sealing washer, the pivot of passing the valve body is installed at the top of valve body, the sealing washer is connected with the top of valve block, the worm gear group of drive pivot is still. The utility model discloses novel structure adopts pressing mode seal structure, avoids the valve block to cause the sealing washer wearing and tearing and lead to sealing performance to descend at pivoted in-process scratch sealing washer, improves the durability of butterfly valve.

Description

Center butterfly valve with high durability

Technical Field

The utility model relates to a butterfly valve technical field specifically is a center butterfly valve that durability is high.

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. 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.

The existing butterfly valve generally adopts a close-fitting mode between a valve plate and a sealing ring to achieve a sealing effect, the valve plate easily scratches the inner wall of the sealing ring to cause the abrasion of the sealing ring and further cause the reduction of the sealing performance in the overturning process of the valve plate, and the durability is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough to overcome above-mentioned condition, aims at providing the technical scheme that can solve above-mentioned problem.

The utility model provides a center butterfly valve that durability is high, which comprises a valve body, the valve block, fixed nestification has the sealing washer on the inner wall of valve body, the valve block is located in the valve body and the upper and lower both ends of valve block closely cooperate with the sealing washer, it is equipped with sealed separation blade in the both sides of valve block to have on the inner wall of sealing washer, under the closed condition, the edge of valve block compresses tightly sealed separation blade in order to form sealed condition, and have the clearance between the edge of valve block and the inner wall of sealing washer, the top of valve body is installed and is passed the valve body, the pivot of sealing washer and being connected with the top of valve block, the worm gear.

Furthermore, one surface of the sealing separation blade, which is contacted with the valve plate, is an inclined surface.

Furthermore, a convex ring is formed on the outer wall of the sealing ring, and an embedding groove corresponding to the convex ring is formed on the inner wall of the valve body.

Furthermore, flanges are formed on the edges of the two ends of the sealing ring, and grooves corresponding to the flanges are formed in the inner wall of the valve body.

Furthermore, the bottom of the valve body is provided with a support rod which passes through the valve body and the sealing ring and is rotationally connected with the valve plate.

Furthermore, the worm gear and worm group comprises a worm gear which is coaxial with the rotating shaft and is fixedly connected with the rotating shaft and a worm which is meshed with the worm gear, and the tail end of the worm is fixedly connected with a turntable.

Compared with the prior art, the utility model discloses the beneficial effect who gains does: the utility model discloses novel structure adopts pressing mode seal structure, avoids the valve block to cause the sealing washer wearing and tearing and lead to sealing performance to descend at pivoted in-process scratch sealing washer, improves the durability of butterfly valve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but 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. 1-3, a center butterfly valve with high durability comprises a valve body 1 and a valve plate 2, wherein a sealing ring 3 is fixedly nested on the inner wall of the valve body 1, the valve plate 2 is arranged in the valve body 1, the upper end and the lower end of the valve plate 2 are tightly matched with the sealing ring 3, sealing separation blades 4 are arranged on two sides of the valve plate 2 on the inner wall of the sealing ring 3, in a closed state, the edge of the valve plate 2 presses the sealing separation blades 4 tightly to form a sealing condition, a gap is formed between the edge of the valve plate 2 and the inner wall of the sealing ring 3, a rotating shaft 5 which penetrates through the valve body 1 and the sealing ring 3 and is connected with the top end of the valve plate 2 is arranged at the top of the valve body 1, and a worm. A gap is reserved between the valve plate 2 and the outer wall of the sealing ring 3, and the sealing ring 3 cannot be scratched in the process of overturning the valve plate 2.

Furthermore, the surface of the sealing baffle 4 contacting the valve plate 2 is an inclined surface. The inclined plane contact is favorable for increasing the contact area and improving the sealing effect.

Furthermore, a convex ring 31 is formed on the outer wall of the sealing ring 3, and a caulking groove 11 corresponding to the convex ring 31 is formed on the inner wall of the valve body 1. The seal ring 3 is fixedly mounted in the valve body 1 by fitting the convex ring 31 into the caulking groove 11.

Further, flanges 32 are formed at the edges of both ends of the sealing ring 3, and grooves 12 corresponding to the flanges 32 are formed on the inner wall of the valve body 1. The flange 32 and the groove 12 are matched to limit the sealing ring 3.

Furthermore, the bottom of the valve body 1 is provided with a support rod 7 which passes through the valve body 1 and the sealing ring 3 and is rotatably connected with the valve plate 2.

Further, the worm and gear set 6 includes a worm wheel 61 coaxial with and fixedly connected to the rotating shaft 5 and a worm 62 engaged with the worm wheel 61, and a rotary disk 63 is fixedly connected to a distal end of the worm 62.

[ EXAMPLES one ]

As shown in fig. 2, the sealing flap 4 "is formed with a loop 3".

[ example two ]

As shown in FIG. 3, the seal stopper 4 'is bonded and fixed to the seal ring 3'.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a center butterfly valve that durability is high, which comprises a valve body, the valve block, a serial communication port, fixed nestification has the sealing washer on the inner wall of valve body, the valve block is located in the valve body and the upper and lower both ends of valve block closely cooperate with the sealing washer, it is equipped with sealed separation blade in the both sides of valve block to have on the inner wall of sealing washer, under the closed condition, the edge of valve block compresses tightly sealed separation blade in order to form sealed condition, and have the clearance between the edge of valve block and the inner wall of sealing washer, the top of valve body is installed and is passed the valve body, the pivot of sealing washer and being connected with the top of valve block, the worm.

2. The center butterfly valve with high durability as claimed in claim 1, wherein a surface of the sealing flap contacting the valve plate is a slope.

3. The center butterfly valve with high durability as claimed in claim 1, wherein a convex ring is formed on an outer wall of the seal ring, and a caulking groove corresponding to the convex ring is formed on an inner wall of the valve body.

4. The center butterfly valve with high durability as claimed in claim 1, wherein flanges are formed at both end edges of the packing, and grooves corresponding to the flanges are formed at an inner wall of the valve body.

5. The center butterfly valve with high durability as claimed in claim 1, wherein a support rod is installed at the bottom of the valve body, penetrates through the valve body and the sealing ring, and is rotatably connected with the valve plate.

6. The center butterfly valve with high durability as claimed in claim 1, wherein the worm gear and worm set comprises a worm gear coaxial with and fixedly connected to the rotation shaft and a worm engaged with the worm gear, and a rotary disc is fixedly connected to the end of the worm.

7. The center butterfly valve of claim 1, wherein the sealing flap is integrally formed with the sealing ring.

8. The center butterfly valve with high durability as recited in claim 1, wherein the sealing flap is adhesively secured to the sealing ring.