CN2344608Y - Double-sealing stop valve - Google Patents
Double-sealing stop valve Download PDFInfo
- Publication number
- CN2344608Y CN2344608Y CN 98226953 CN98226953U CN2344608Y CN 2344608 Y CN2344608 Y CN 2344608Y CN 98226953 CN98226953 CN 98226953 CN 98226953 U CN98226953 U CN 98226953U CN 2344608 Y CN2344608 Y CN 2344608Y
- Authority
- CN
- China
- Prior art keywords
- valve
- seal
- valve body
- ring
- circular ring
- 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
Links
- 238000007789 sealing Methods 0.000 title abstract description 18
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
A double-sealing stop valve composed of a valve body, a valve cover, a valve clack and a valve rod is characterized in that a sealing ring is further arranged on a circular ring-shaped platform on the lower portion of a middle cavity of the valve body and the upper surface of a valve seat or on a groove around the circular ring-shaped platform, the middle cavity wall tightly attached to the valve body is provided with a through hole, the lower end of the valve cover abuts against and is fixed on the circular ring-shaped platform on the upper surface of the valve seat or the groove around the circular ring-shaped platform through a pressing ring with a through hole, and the valve cover. The utility model discloses a two-way double seal with axial main seal and radial supplementary seal has overcome not enough of single sealed among the prior art, has improved the sealed effect of stop valve, has prolonged life.
Description
The utility model relates to a kind of valve, exactly is a kind of double seal stop valve.
Existing common stop valve is generally formed by valve body, valve gap, flap and valve rod, forms the leak-tight seal pair by flap sealing surface and valve body sealing surface.Manipulating in the process of stop valve, owing to often contact, wear and tear between flap sealing surface and the valve body sealing surface, cause two sealing surfaces to form impression or scratch, thereby cause seal failure, cause leaking, influence the working life of stop valve.
The purpose of this utility model is to overcome the deficiency of single sealing in the above-mentioned prior art, and the double seal stop valve of a kind of improved, good seal performance, long service life is provided.
Technical solution of the present utility model is: a kind of double seal stop valve, comprise valve body, valve gap, flap and valve rod, it is characterized in that: on the ring platform of the lumen bottom of valve body, valve seat upper surface, or the groove around this ring platform, the lumen wall of being close to valve body also is provided with a seal ring, seal ring is by the lower end of valve gap, by having the pressure ring of through hole, compress the groove around the ring platform that is fixed on the valve seat upper surface or this ring platform, valve gap and valve body by flange by bolton.
The utility model is owing on the basis of the axial seal between existing flap sealing surface and the valve body sealing surface, set up the radial seal between flap and the seal ring, thereby realized the two-way double seal of stop valve.Compared with prior art, has significant sealing effect, both made the axial primary seal between flap sealing surface and the valve body sealing surface, in use cause producing small leakage because of frictionally damage or impression, but owing to the radially auxiliary seal that has between flap and the seal ring, still can guarantee the sealability of stop valve and can not leak, thereby prolong working life of stop valve greatly.Can be widely used in control to gas, liquid.
Fig. 1 is the utility model structural representation.
Embodiment.
In the accompanying drawing, the lumen bottom of valve body 1 studs with the valve seat 20 that communicates with inlet passage 21, and the lumen right side communicates with outlet passage 22.On the ring platform of the lumen bottom of valve body 1 and valve seat 20 upper surfaces or this ring platform around groove, the lumen wall of being close to valve body 1 is provided with a seal ring 2, seal ring 2 compresses on the ring platform that is fixed on valve seat 20 upper surfaces or the groove of this ring platform by the pressure ring 3 of lower end by having through hole of valve gap 6.Valve gap 6 is connected and fixed by stud bolt 9 and nut 10 by middle flange with valve body 1.Joint between valve gap 6 and the valve body 1 is provided with pad 7.
The upper end of valve gap 6 is provided with stuffing box, and filler 8 places in the stuffing box, is connected and fixed by Gland 12 shutoff and by swing bolt 13.The lower end of swing bolt 13 is connected with valve gap 6 by pin 11, and the upper end is fixing with pad 14 and nut 15.
Valve rod 5 passes valve gap 6 and valve gap support, and the flap 4 in its lower end and the valve body lumen flexibly connects, and flap 4 sealing surfaces and valve body 1 sealing surface form an axial primary seal and pay, and form an auxiliary seal radially with seal ring 2 and pay.Stem Mut 16 is by on the support that is threaded in valve gap 6.The upper end of valve rod 5 is connected with handwheel 17, and is fixing by pad 18 and nut 19.
During Open valve, turn handwheel 17 and drive valve rod 5 and, open inlet/outlet passage 21,22 by carrying on the valve rod 5 drive flaps 4.During throttle down, handwheel 17 drives valve rod 5 and promotes flap 4 by valve rod 5 and presses down, and then closes inlet/outlet passage 21,22.When between the sealing surface of flap 4 sealing surfaces and valve body 1 because of frictionally damage or impression produce when leaking because the radially auxiliary seal between flap 4 and the seal ring 2 still can stop leakage effectively, guarantee the sealability of whole stop valve.
Claims (1)
1. double seal stop valve, comprise valve body (1), valve gap (6), flap (4) and valve rod (5), it is characterized in that: in the lumen bottom of valve body (1), on the ring platform of valve seat (20) upper surface, or the groove around this ring platform, the lumen wall of being close to valve body (1) also is provided with a seal ring (2), seal ring (2) is by the lower end of valve gap (6), by the pressure ring (3) that has through hole, compress the ring platform or this ring platform groove all around that are fixed on valve seat (20) upper surface, valve gap (6) is fastening by bolt (19) by flange with valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98226953 CN2344608Y (en) | 1998-06-03 | 1998-06-03 | Double-sealing stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98226953 CN2344608Y (en) | 1998-06-03 | 1998-06-03 | Double-sealing stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2344608Y true CN2344608Y (en) | 1999-10-20 |
Family
ID=33977364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98226953 Expired - Fee Related CN2344608Y (en) | 1998-06-03 | 1998-06-03 | Double-sealing stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2344608Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464096C (en) * | 2007-04-05 | 2009-02-25 | 山西兴工阀门制造有限公司 | Replaceable valve of dual-sealing ring |
| CN110869655A (en) * | 2017-07-11 | 2020-03-06 | 爱三工业株式会社 | Double eccentric valve |
-
1998
- 1998-06-03 CN CN 98226953 patent/CN2344608Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464096C (en) * | 2007-04-05 | 2009-02-25 | 山西兴工阀门制造有限公司 | Replaceable valve of dual-sealing ring |
| CN110869655A (en) * | 2017-07-11 | 2020-03-06 | 爱三工业株式会社 | Double eccentric 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 |