CN208793688U

CN208793688U - A kind of sphere valve seat transition detaching structure

Info

Publication number: CN208793688U
Application number: CN201821420016.8U
Authority: CN
Inventors: 吴斌彬; 张懿华
Original assignee: Jiangsu Shentong Valve Co Ltd
Current assignee: Jiangsu Shentong Valve Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2019-04-26
Anticipated expiration: 2028-08-31

Abstract

A kind of sphere valve seat transition detaching structure, including sphere and valve seat, sphere is equipped with ball seal face, valve seat is equipped with sealing surface of seat, ball seal face and sealing surface of seat cooperatively form sealing pair, angle between ball seal face and the center line of sphere runner hole is α, and the angle between sealing surface of seat and the center line of sphere runner hole is β, 5 ° of 2 ° of > of > α > β；It is located at the transition face at sphere runner mouth on sphere and is equipped with transition arc A, the angle of transition arc A is R1, is located at the transition face at ball seal face on sphere and is equipped with transition arc B, and the angle of transition arc B is R2, R2=(2 ~ 3) R1.The beneficial effects of the utility model are: in valve opening, closing process, ball mouth and sealing surface of seat are in rounding off always and are detached from motion state, sealing pair is avoided because the influences such as pressure medium, mismachining tolerance lead to sealing pair occlusion, scratch damage, suitable for valve frequently opening and closing for a long time, long service life, sealing performance are stablized.

Description

A kind of sphere valve seat transition detaching structure

Technical field

The utility model relates to a kind of spheres and valve seat transition detaching structure.

Background technique

Current existing ball valve ball mouth structure generallys use designed arc-shaped appearance, because of pressure medium, processing in beginning, closing process Gap, error etc. influence, and ball mouth is easy to produce occlusion, abrasive damage when passing through sealing surface of seat in opening-closing process, influence Sealing surface service life.

Summary of the invention

The shortcomings that in order to overcome existing sphere valve seat transition detaching structure, the utility model, which provides one kind, can be avoided sealing Pair occlusion, abrasive sphere valve seat transition detaching structure.

Technical solution adopted by the utility model to solve its technical problems is, a kind of sphere valve seat transition detaching structure, Including sphere and valve seat, sphere is equipped with ball seal face, and valve seat is equipped with sealing surface of seat, ball seal face and sealing surface of seat Sealing pair is cooperatively formed, the angle between ball seal face and the center line of sphere runner hole is α, sealing surface of seat and sphere stream Angle between the center line in road hole is β, 5 ° of 2 ° of > of > α > β；It is located at the transition face at sphere runner mouth on sphere and was equipped with Circular arc A is crossed, the angle of transition arc A is R1, it is located at the transition face at ball seal face on sphere and is equipped with transition arc B, mistake The angle for crossing circular arc B is R2, R2=(2 ~ 3) R1.

The beneficial effects of the utility model are: ball mouth is in always with sealing surface of seat in valve opening, closing process Rounding off is detached from motion state, avoids sealing pair because the influences such as pressure medium, mismachining tolerance lead to sealing pair occlusion, scratch Damage, being suitable for valve, frequently opening and closing, long service life, sealing performance are stablized for a long time.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the present embodiment；

Fig. 2 is enlarged drawing at A in this Fig. 1.

In figure: 1. spheres；2. valve seat；3. ball seal face；4. sealing surface of seat；5. the center of sphere runner hole； 6. transition arc A；7. transition arc B；8. sphere runner mouth.

Specific embodiment

As shown in Figure 1, 2, a kind of sphere valve seat transition detaching structure, including sphere 1 and valve seat 2, sphere 1 are equipped with sphere Sealing surface 3, valve seat 2 are equipped with sealing surface of seat 4, and ball seal face 3 and sealing surface of seat 4 cooperatively form sealing pair, ball seal Angle between face 3 and the center line 5 of sphere runner hole is α, between sealing surface of seat 4 and the center line 5 of sphere runner hole Angle is β, 5 ° of 2 ° of > of > α > β；It is located at the transition face at sphere runner mouth 8 on sphere 1 and is equipped with transition arc A6, transition circle The angle of arc A6 is R1, is located at the transition face at ball seal face 3 on sphere 1 and is equipped with transition arc B7, the angle of transition arc B Degree is R2, R2=(2 ~ 3) R1.

Claims

1. a kind of sphere valve seat transition detaching structure, including sphere and valve seat, sphere is equipped with ball seal face, and valve seat is equipped with valve Seat sealing surface, ball seal face and sealing surface of seat cooperatively form sealing pair, it is characterised in that: the ball seal face and sphere Angle between the center line of runner hole is α, and the angle between the sealing surface of seat and the center line of sphere runner hole is β, 5 ° of 2 ° of > of > α > β；It is located at the transition face at sphere runner mouth on the sphere and is equipped with transition arc A, the angle of transition arc A Degree is R1, is located at the transition face at ball seal face on the sphere and is equipped with transition arc B, and the angle of transition arc B is R2, R2=(2~3)R1。