CN106224583A - A kind of sealing structure of eccentric half-ball valve - Google Patents
A kind of sealing structure of eccentric half-ball valve Download PDFInfo
- Publication number
- CN106224583A CN106224583A CN201610720065.2A CN201610720065A CN106224583A CN 106224583 A CN106224583 A CN 106224583A CN 201610720065 A CN201610720065 A CN 201610720065A CN 106224583 A CN106224583 A CN 106224583A
- Authority
- CN
- China
- Prior art keywords
- ring
- valve seat
- valve
- valve body
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Abstract
nullThe present invention is the sealing structure of a kind of eccentric half-ball valve，Including valve body、Valve seat、Valve seat trim ring and spool，It is provided with step at the sealing surface of described valve body，Described valve seat is located at the sealing surface of valve body，It also is provided with step at the sealing surface of described valve seat，It is provided with v-ring between step and the step of valve body of described valve seat，Described spool is located in valve body，The bottom of described v-ring is pressed into contact with spool when valve closing，Described valve seat trim ring is connected with valve body，Described valve seat trim ring compresses valve seat，Described valve seat trim ring is provided with slack adjuster，Adjusting elasticity screw can make v-ring compress or unclamp spool，Sealing ring at valve sealing face is changed into being arranged between valve seat and valve body by being arranged on valve body by the present invention，Avoid the difficulty processing dovetail groove on valve body，Difficult drop-off，V-ring can deform under the pressure of medium in the duct，There is self-sealing characteristics，Improve sealing reliability.
Description
Technical field
The present invention relates to eccentric half-ball valve technical field, particularly relate to the sealing structure of a kind of eccentric half-ball valve.
Background technology
Eccentric half-ball valve is also c-type ball valve, is to make valve unimpeded or inaccessible by rotary hemispherical, and its switch is light, volume
Little, very heavy caliber, simple in construction can be made, easy to maintenance, sealing surface and sphere, often at closure state, are difficult to be rushed by medium
Erosion, is widely used in oil, chemical industry, urban water supply and sewerage etc. and requires the operating mode of strict seal.
According to the difference of sealing surface, eccentric half-ball valve can be divided into soft seal and firmly seal two kinds of different forms, at present,
In soft seal eccentric half-ball valve, its sealing surface typically uses the shape placing sealing ring on valve body in processing dovetail groove, dovetail groove
Formula realizes sealing, and the shortcoming that this seal form exists is: directly process difficulty height and the processing dimension of dovetail groove on valve body
Wayward, after often processing, sealing ring is loaded dovetail groove, after valve runs a period of time, sealing ring easily comes off, and reaches
Less than sealing effectiveness, causing valve serious leak, sealing reliability is difficult to ensure.
Summary of the invention
Present invention seek to address that the deficiencies in the prior art, and the sealing structure of a kind of eccentric half-ball valve is provided, this sealing surface
Sealing ring can be securely fixed on sealing surface by structure, prevents from causing valve leak owing to sealing ring comes off.
The present invention for achieving the above object, by the following technical solutions: the sealing structure of a kind of eccentric half-ball valve, including valve
Body, valve seat, valve seat trim ring and spool, be provided with step at the sealing surface of described valve body, described valve seat is located at the sealing surface of valve body,
It also is provided with step at the sealing surface of described valve seat, between step and the step of valve body of described valve seat, is provided with v-ring, described
Spool is located in valve body, and the bottom of described v-ring is pressed into contact with spool when valve closing, described valve seat trim ring and valve
Body connects, and described valve seat trim ring compresses valve seat, and the outer round surface of described valve seat is provided with groove, is provided with O-ring seals in groove.
Described v-ring is nitrile rubber sealing ring.
Described valve seat trim ring is provided with slack adjuster, and adjusting elasticity screw can make v-ring compress or unclamp spool.
The invention has the beneficial effects as follows: the present invention by the sealing ring at valve sealing face by be arranged on valve body change into install
Between valve seat and valve body, it is to avoid process the difficulty of dovetail groove, difficult drop-off on valve body, and use v-ring, V
Shape sealing ring can deform under the pressure of medium in the duct, has self-sealing characteristics, improves sealing reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
In figure: 1-valve seat trim ring；2-slack adjuster；3-valve body；4-O shape sealing ring；5-valve seat；6-V shape sealing ring；7-valve
Core；
It is described in detail referring to the drawings below with reference to embodiments of the invention.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings:
As it is shown in figure 1, the sealing structure of a kind of eccentric half-ball valve, including valve body 3, valve seat 5, valve seat trim ring 1 and spool 7,
Being provided with step at the sealing surface of described valve body 3, described valve seat 5 is located at the sealing surface of valve body 3, at the sealing surface of described valve seat 5
Also being provided with step, be provided with v-ring 6 between step and the step of valve body 3 of described valve seat 5, described spool 7 is located at valve body 3
In, the bottom of described v-ring 6 is pressed into contact with spool 7 when valve closing, and described valve seat trim ring 1 is connected with valve body 3,
Described valve seat trim ring 1 compresses valve seat 5, and the outer round surface of described valve seat 5 is provided with groove, is provided with O-ring seals 4 in groove.
Described v-ring 6 is nitrile rubber sealing ring.
Described valve seat trim ring 1 is provided with slack adjuster 2, and adjusting elasticity screw 2 can make v-ring 6 compress or unclamp
Spool 7.
During work, when spool 7 rotates at valve body 3 sealing surface, v-ring 6 pressed spool 7, it is achieved seal, at pipeline
Under the pressure of interior medium, v-ring 6 deforms, and bottom is tightr with the contact of spool 7, it is ensured that sealing effectiveness, regulation
Slack adjuster 2 can make valve seat trim ring 1 compress or unclamp valve seat 5, so that v-ring 6 compresses or unclamps spool 7.
Above in conjunction with accompanying drawing, the present invention is exemplarily described, it is clear that the present invention implements not by aforesaid way
Restriction, as long as have employed method design and the various improvement that carry out of technical scheme of the present invention, or the most improved direct application
In other occasion, all within protection scope of the present invention.
Claims (3)
1. a sealing structure for eccentric half-ball valve, including valve body (3), valve seat (5), valve seat trim ring (1) and spool (7), it is special
Levying and be, be provided with step at the sealing surface of described valve body (3), described valve seat (5) is located at the sealing surface of valve body (3), described valve
It also is provided with step at the sealing surface of seat (5), between step and the step of valve body (3) of described valve seat (5), is provided with v-ring
(6), described spool (7) is located in valve body (3), and the bottom of described v-ring (6) compresses with spool (7) when valve closing
Contact, described valve seat trim ring (1) is connected with valve body (3), and described valve seat trim ring (1) compresses valve seat (5), outside described valve seat (5)
Circular surfaces is provided with groove, is provided with O-ring seals (4) in groove.
The sealing structure of eccentric half-ball valve the most according to claim 1, it is characterised in that described v-ring (6) is
Nitrile rubber sealing ring.
The sealing structure of eccentric half-ball valve the most according to claim 1, it is characterised in that on described valve seat trim ring (1)
Being provided with slack adjuster (2), adjusting elasticity screw (2) can make v-ring (6) compress or unclamp spool (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720065.2A CN106224583A (en) | 2016-08-25 | 2016-08-25 | A kind of sealing structure of eccentric half-ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720065.2A CN106224583A (en) | 2016-08-25 | 2016-08-25 | A kind of sealing structure of eccentric half-ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106224583A true CN106224583A (en) | 2016-12-14 |
Family
ID=57555020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610720065.2A Pending CN106224583A (en) | 2016-08-25 | 2016-08-25 | A kind of sealing structure of eccentric half-ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106224583A (en) |
-
2016
- 2016-08-25 CN CN201610720065.2A patent/CN106224583A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161214 |
|
| WD01 | Invention patent application deemed withdrawn after publication |