CN2337364Y - Eccentric metal hard sealing ball valve - Google Patents
Eccentric metal hard sealing ball valve Download PDFInfo
- Publication number
- CN2337364Y CN2337364Y CN 98217043 CN98217043U CN2337364Y CN 2337364 Y CN2337364 Y CN 2337364Y CN 98217043 CN98217043 CN 98217043 CN 98217043 U CN98217043 U CN 98217043U CN 2337364 Y CN2337364 Y CN 2337364Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- spheroid
- utility
- model
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a metal hard sealing ball valve, which is composed of a valve body, a valve seat, a ball body, a valve rod, a supporting pole of the ball body, a sealing piece, a mounting piece. The utility model is characterized in that the valve rod and the supporting pole of the ball body are symmetrically and eccentrically provided with the ball body, and complete mechanism sealing is arranged between the valve body and the valve seat, which makes the utility model have the advantages of uniform sealing force, good sealing performance, portable open and close, small abrasion on a sealing surface, high application pressure, high temperature, etc. The utility model is very suitable for switching or regulating fluid flows in high-temperature and high-pressure medium pipelines.
Description
The utility model relates to a kind of valve, specifically about a kind of hard seal ball valve.
The prior art of hard seal ball valve generally all is made up of valve body, valve seat, spheroid, valve gap, valve rod, drive wheel, sphere supports post, Sealing and assembling set, valve rod and spheroid and sphere supports post three's center line overlaps, and on the valve seat of spheroid import and export both sides Packing spring and O-ring seals is housed all.Its major defect is: valve opening and closing power is big; Abrasion between sealing surface is big; Serviceability temperature and pressure are lower.
The eccentric hard seal ball valve of having produced at present, valve rod and sphere supports post still overlap with spheroid three's center line, and just valve rod is connected with spheroid by an eccentric cam, and it is eccentric sealed that ball seal face and sealing surface of seat are produced.Its deficiency is that sealing force is inhomogeneous around spheroid and the sealing surface of seat, poor sealing performance.
The purpose of this utility model is at the deficiencies in the prior art, design a kind of open and close around laborsaving, the sealing surface stressed evenly, good seal performance, be applicable to the eccentric metal hard-sealing ball valve of high-temperature high-pressure medium.
The technical solution of the utility model comprises valve body, valve seat, spheroid, valve gap, valve rod, slewing gear, sphere supports post and Sealing and assembling set, its main feature is the central lines of valve rod and sphere supports post and installs with spheroid is eccentric, mechanical seal between outlet side valve seat and the ball seal face leaves the space between suction side valve seat and the spheroid during valve closing.
The utility model beneficial effect compared with prior art is that spheroid adopts the eccentric installation of symmetry, complete mechanical sealing between valve seat and the valve body, between outlet side valve seat and the spheroid, thereby make the product sealing force evenly, good seal performance, keying is light, the sealing surface abrasion is little, can be applicable to high-temperature high-pressure medium, and can be used as modulating valve.
Fig. 1 is a structure sectional view of the present utility model.
Now describe embodiment of the present utility model in conjunction with the accompanying drawings in detail.Eccentric metal hard sealed ball valve shown in Figure 1 is made up of valve body 5, valve seat 6, spheroid 4, valve gap 3, valve rod 2, slewing gear 1, sphere supports post 7 and Sealing and assembling set.Be threaded between valve body 5 and the valve seat 6, mechanical seal, spheroid 4 and valve rod 2 and eccentric connections of sphere supports post 7 symmetries, and be partial to spheroid 4 outlet sides.When closing, mechanical seal between outlet side sealing surface of seat and spheroid 4 sealing surfaces leaves the space between suction side valve seat and the spheroid 4.Between sphere supports post 7 and the sealing plug 8 by being threaded.Transmission device 1 is followed in valve rod 2 upper ends, and transmission device 1 is an electric transmissio mechanism.
Transmission device 1 among Fig. 1 is gone back manual transmission wheel.
Claims (2)
1, a kind of eccentric metal hard sealed ball valve, comprise valve body, valve seat, spheroid, valve gap, valve rod, transmission device, sphere supports post, Sealing and assembling set, it is characterized in that spheroid (4) and valve rod (2) and the eccentric installation of sphere supports post (7), the dead in line of valve rod (2) and sphere supports post (7), during valve closing, mechanical seal between valve seat (6) outlet side sealing surface and spheroid (4) sealing surface, suction side valve seat and spheroid leave the space between (4).
2, eccentric metal hard sealed ball valve according to claim 1 is characterized in that mechanism's sealing between described valve body (5) and the valve seat (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98217043 CN2337364Y (en) | 1998-07-14 | 1998-07-14 | Eccentric metal hard sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98217043 CN2337364Y (en) | 1998-07-14 | 1998-07-14 | Eccentric metal hard sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2337364Y true CN2337364Y (en) | 1999-09-08 |
Family
ID=33969778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98217043 Expired - Fee Related CN2337364Y (en) | 1998-07-14 | 1998-07-14 | Eccentric metal hard sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2337364Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303348C (en) * | 2004-07-15 | 2007-03-07 | 浙江大学 | Conical surface hard seal ball valve |
-
1998
- 1998-07-14 CN CN 98217043 patent/CN2337364Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303348C (en) * | 2004-07-15 | 2007-03-07 | 浙江大学 | Conical surface hard seal ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |