CN209853326U

CN209853326U - Special butterfly valve is carried to powder

Info

Publication number: CN209853326U
Application number: CN201920644964.8U
Authority: CN
Inventors: 王辉; 陈烈群; 张佳琪
Original assignee: Zhejiang Leno Instrument Co Ltd
Current assignee: Zhejiang Leno Instrument Co Ltd
Priority date: 2019-05-04
Filing date: 2019-05-04
Publication date: 2019-12-27
Anticipated expiration: 2029-05-04

Abstract

The utility model discloses a special butterfly valve is carried to powder relates to a butterfly valve, and it includes valve body, valve plate and valve rod, the valve rod is installed in the valve body, and the valve plate is fixed on the valve rod by conical pin location, still install the disk seat in the valve body, disk seat and valve plate elastic contact, the beneficial effects of the utility model are that: the valve seat has good elasticity, can take place certain elastic deformation, can effectually overcome the damage that impurity extrusion, scraping caused to it, can have sealing performance simultaneously again, and whole valve is formed through bolt fixed connection by two halfbodies simultaneously, has and demolishs convenient, easy maintenance's characteristics, and whole valve's simple structure, control is convenient, long service life.

Description

Special butterfly valve is carried to powder

Technical Field

The utility model relates to a butterfly valve specifically is a special butterfly valve is carried to powder.

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.

For the delivery of powder, its in the transportation, the powder can get into or the adhesion between valve plate and disk seat, and when the valve plate took place the motion for the disk seat, the powder can receive the extrusion, takes place the friction with valve plate and disk seat, and long this past, causes valve plate and disk seat to take place wearing and tearing, influences sealed effect.

Based on this, this application has proposed a special butterfly valve is carried to powder.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special butterfly valve is carried to powder to solve the problem that proposes in the above-mentioned background art.

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

the utility model provides a special butterfly valve is carried to powder, includes valve body, valve plate and valve rod, the valve rod is installed in the valve body, and the valve plate is fixed a position and is fixed on the valve rod by conical pin, still install the disk seat in the valve body, disk seat and valve plate elastic contact.

As a further aspect of the present invention: the valve seat is made of rubber materials.

As a further aspect of the present invention: the valve plate is polished, and the surface roughness of the valve plate is not less than Ra0.4.

As a further aspect of the present invention: and a long shaft sleeve and a short shaft sleeve sleeved outside the valve rod are further arranged in the valve body.

As a further aspect of the present invention: o-shaped rings are arranged between the long shaft sleeve and the valve rod, and between the short shaft sleeve and the valve rod.

As a further aspect of the present invention: the valve body is formed by fixedly connecting two half bodies through bolts, and a sealing element is arranged between the two half bodies.

As a further aspect of the present invention: the pneumatic actuator is further included, and the output end of the pneumatic actuator is connected with the valve rod.

Compared with the prior art, the beneficial effects of the utility model are that: the valve seat has good elasticity, can take place certain elastic deformation, can effectually overcome the damage that impurity extrusion, scraping caused to it, can have sealing performance simultaneously again, and whole valve is formed through bolt fixed connection by two halfbodies simultaneously, has and demolishs convenient, easy maintenance's characteristics, and whole valve's simple structure, control is convenient, long service life.

Drawings

Fig. 1 is a schematic structural diagram of a butterfly valve special for powder delivery.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

In the figure: 1-valve body, 2-long shaft sleeve, 3-valve seat, 4-valve plate, 5-valve rod, 6-taper pin, 7-O-shaped ring, 8-short shaft sleeve and 9-pneumatic actuator.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Example 1

Referring to fig. 1-2, in an embodiment of the present invention, a special butterfly valve for powder conveying includes a valve body 1, a valve plate 4 and a valve rod 5, the valve rod 5 is installed in the valve body 1, the valve plate 4 is positioned and fixed on the valve rod 5 by a taper pin 6, when the valve rod 5 drives the valve plate 4 to rotate, the butterfly valve can be switched between a closed state and an open state, a valve seat 3 is further installed in the valve body 1, the valve seat 3 is in elastic contact with the valve plate 4, specifically, the valve seat 3 is made of a rubber material, preferably, the valve seat 3 is made of EPDM, and has excellent elasticity, when the valve is closed, that is, when the valve plate 4 acts, the valve seat 3 is pressed by the valve plate 4, and since the valve seat 3 has elasticity, a certain elastic deformation can occur, damage to the valve seat caused by extrusion and scraping of impurities can be effectively overcome, and meanwhile, the butterfly valve can, the powder can be to the continuous friction of valve plate 4, and after a long time, can cause the switch of valve plate 4 to be inflexible or lose the switching action, consequently, in this embodiment, valve plate 4 is through polishing treatment, and its surface roughness is not less than Ra0.4, and valve plate 4 surface is comparatively smooth after the polishing for the damage of material to valve plate 4 reduces greatly, makes the valve reach improvement life's advantage.

Meanwhile, a long shaft sleeve 2 and a short shaft sleeve 8 which are sleeved outside the valve rod 5 are further installed in the valve body 1, and preferably, O-shaped rings 7 are installed between the long shaft sleeve 2 and the short shaft sleeve 8 and between the valve rod 5.

In order to facilitate the disassembly of the valve body 1 and the replacement of internal parts, the valve body 1 is formed by fixedly connecting two half bodies through bolts, and a sealing element and the like are necessarily arranged between the two half bodies, so that the characteristics of convenient disassembly and convenient maintenance can be achieved.

Example 2

Please refer to fig. 1-2, in an embodiment of the present invention, a special butterfly valve for powder conveying further includes a pneumatic actuator 9, an output end of the pneumatic actuator 9 is connected to the valve rod 5, and the pneumatic actuator 9 can be controlled by an external control element, which is a basis for realizing automatic control.

It needs to explain very much, among this technical scheme, disk seat 3 has good elasticity, can take place certain elastic deformation, can effectually overcome the damage that impurity extrusion, scraping led to the fact to it, can have sealing performance again simultaneously, and whole valve is formed by two halfbodies through bolt fixed connection simultaneously, has and demolishs convenient, easy maintenance's characteristics, and whole valve's simple structure, control is convenient, long service life.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. The utility model provides a special butterfly valve is carried to powder, includes valve body (1), valve plate (4) and valve rod (5), install in valve body (1) valve rod (5), valve plate (4) are fixed a position and are fixed on valve rod (5) by taper pin (6), still install disk seat (3) in valve body (1), its characterized in that, disk seat (3) and valve plate (4) elastic contact.

2. The butterfly valve special for powder conveying according to claim 1, wherein the valve seat (3) is made of rubber material.

3. The butterfly valve special for powder conveying according to claim 1, wherein the valve plate (4) is polished to have a surface roughness not less than Ra0.4.

4. The butterfly valve special for powder conveying according to claim 1, 2 or 3, wherein a long shaft sleeve (2) and a short shaft sleeve (8) sleeved outside the valve rod (5) are further installed in the valve body (1).

5. The butterfly valve special for powder conveying according to claim 4, wherein O-rings (7) are arranged between the long shaft sleeve (2) and the valve rod (5) and between the short shaft sleeve (8) and the valve rod.

6. The butterfly valve special for powder conveying according to claim 1, 2, 3 or 5, wherein the valve body (1) is formed by fixedly connecting two half bodies through bolts, and a sealing element is further arranged between the two half bodies.

7. The butterfly valve special for powder conveying according to claim 6, further comprising a pneumatic actuator (9), wherein an output end of the pneumatic actuator (9) is connected with the valve rod (5).