CN2568887Y - Adjustable double sealing cut-off valve - Google Patents
Adjustable double sealing cut-off valve Download PDFInfo
- Publication number
- CN2568887Y CN2568887Y CN 02266785 CN02266785U CN2568887Y CN 2568887 Y CN2568887 Y CN 2568887Y CN 02266785 CN02266785 CN 02266785 CN 02266785 U CN02266785 U CN 02266785U CN 2568887 Y CN2568887 Y CN 2568887Y
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing ring
- seal ring
- spool
- valve body
- 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
Abstract
The utility model belongs to an improvement of a stop valve. A lower seal ring, a pressing rack and an upper seal ring are arranged in a cavity in a valve body in turn, and the upper seal ring is supported and pressed by an adjustable valve cover having a top end with a staircase-shaped bulged ring. A valve core can be lifted, opened and closed in the lower seal ring and the pressing rack with a valve rod, and the outer diameter of the valve core is matched with the sizes of the inner diameters of the seal ring and the pressing rack. Therefore, the sealing state between the valve body and the valve cover can be regulated when the valve cover is tightly pressed, and the side linear sealing state between the lower seal ring and the valve core can be also regulated to obtain the aim of double seal. The utility model having the advantages of flexibility for opening and closing, favorable sealing performance, long service life, reliable use, etc. can be widely used for delivery conduits in petroleum, chemical engineering, pharmacy and food industries, etc.
Description
Technical field
Model utility belongs to a kind of improvement of stop valve.
Background technique
Existing stop valve exists two common faults, and the one, because spool has only single face seal, sealing effect is not fine; The 2nd, Sealing can not be regulated, and the washing away of long-time flowing medium, sealing part abrasion easily produce the gap, cause that the race of medium is emitted or water clock, have influenced the working life of stop valve; The 3rd, because the rotation of the direct armrest wheel of valve rod drives the keying of controlling spool, easily produce wearing and tearing between valve rod and the valve gap, cause that valve rod rocks, make the spool discontinuity, thereby influenced the sealing effect between spool and the Sealing.
Technology contents
The purpose of the utility model is to provide a kind of good airproof performance, the adjustable double sealed stop valve that is easy to open and close.
The adjustable double sealed stop valve is by the valve body that has lumen and water inlet and outlet passage, be contained in the spool in the valve body lumen, place lower sealing ring, clamping frame and the upper sealing ring of inner chamber successively, be contained in above the valve body and the handwheel composition of the valve gap of roof pressure on upper sealing ring and valve rod that is connected with spool and actuate valve stem lifting.Lower sealing ring is provided with sealing seat, and the lower sealing ring internal diameter matches with spool external diameter size, and the valve gap top is the stepped shaft bulge loop, and the external diameter of this bulge loop matches with upper sealing ring and clamping frame internal diameter size.Like this, upper sealing ring is shut in the envelope chamber that clamping frame, valve body, valve gap constitute.If compress valve gap, not only can regulation valve body, the sealing between the valve gap, and can regulate the linear sealing of side between lower sealing ring and the spool, reach the purpose of double seal.
In order to make handwheel easily open and close spool and don't valve rod to be rocked, the utility model overlaps the fixed position plate on valve rod, and the positioning plate both sides place on the guide rail of valve gap support.When rotating handwheel, spool is closed in rise vertically open valve core or decline of valve rod, has avoided between valve rod and the valve gap because of wearing and tearing cause core shift, and has been difficult to disadvantages such as rotation hand wheel and spool sealing be not tight.
Easily and easily see, the utlity model has keying flexibly, good airproof performance, the life-span is long, uses advantages such as reliable, can be widely used in the industries such as oil, chemical industry, pharmacy, food.
Below in conjunction with embodiment shown in the drawings, the utility model is described in further detail.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the B partial enlarged drawing of Fig. 1.
Fig. 3 is the C partial enlarged drawing of Fig. 1.
Fig. 4 is the A-A sectional view of Fig. 1.
Embodiment
Referring to Fig. 1, the adjustable double sealed stop valve is placed spool 13, upper sealing ring 9, lower sealing ring 11, the clamping frame 10 of valve body 8 lumens 12 and and be fixed on the valve gap 7 on the valve body 8 with bolt 6, nut 5 and is connected the valve rod 3 of spool 13 and handwheel 1 composition of actuate valve stem 3 liftings by the valve body 8 that has lumen 12 and import and export passage.
Valve body 8 is shaped on the circle platform in the jointing place of lumen 12 and import; be equipped with protection lower sealing ring 11 on the circle platform and gnawed the sealing seat 14 of circle; sealing seat 14 is entrenched in the inboard of lower sealing ring 11 bottom surfaces; its internal diameter is less than lower sealing ring 11 internal diameter 1-5mm; clamping frame 10, upper sealing ring 9 place on the lower sealing ring 11 successively, and make same internal diameter, and the external diameter of spool 13 is made identical or slightly a little bit smaller with the internal diameter of lower sealing ring 11; make lower sealing ring 11 sidewalls be close to spool 13 sides, referring to Fig. 3.The end that valve gap 7 withstands on the upper sealing ring 9 is made stepped shaft bulge loop 7-1, interior button roof pressure is on upper sealing ring 9, make upper sealing ring 9 by involution at valve gap 7, compress in the enclosed cavity that support 10, valve body 8 form, guarantee the sealing between valve gap 7 and the valve body 8, referring to Fig. 2.Simultaneously, valve gap 7 has certain adjusting play with valve body 8 junctions, when in the using process because of wearing and tearing cause when leaking, adjust double-screw bolt 6, nut 5, compress valve gap 7.Like this, not only can regulate the sealing of upper sealing ring 9, and can regulate the linear sealing of side between lower sealing ring 11 and the spool 13, make stop valve have the double seal effect of linear sealing and face seal.
The non-migration in order to ensure valve rod 3 moves has vertically increased valve gap support 2 and positioning plate 4 between valve gap 7 and hand swing 1, positioning plate 4 is fixed on the valve rod 3, and both sides have guide groove 4-1, place on the guide rail 2-1 of the valve gap support 2 that matches with it, referring to Fig. 4.Rotate hand and swing 1, the positioning plate 4 on the valve rod 3 is limited at guide rail 2-1 direction and rises or descend, and has avoided valve rod 3 rocking in movement process.
Claims (3)
1, a kind of adjustable double sealed stop valve, comprise and have the valve body (8) that lumen (12) and water inlet and outlet communicate, be contained in the spool (13) in valve body (8) lumen (12), place the lower sealing ring (11) in the lumen (12) successively, clamping frame (10) and upper sealing ring (9), be contained in above the valve body (8) and the valve gap (7) of roof pressure on upper sealing ring (11) and the valve rod (3) that is connected with spool (13) and the handwheel (1) of actuate valve stem (3) lifting, it is characterized in that: lower sealing ring (11) is provided with sealing seat (14), lower sealing ring (11) internal diameter matches with spool (13) external diameter size, valve gap (7) top is stepped shaft bulge loop (7-1), and the external diameter of this bulge loop (7-1) matches with upper sealing ring (9) and clamping frame (10) internal diameter size.
2, according to the described adjustable double sealed stop valve of claim 1, it is characterized in that: the internal diameter of sealing seat (14) is less than the internal diameter of lower sealing ring (15).
3, according to claim 1 or 2 described adjustable double sealed stop valves, it is characterized in that: described valve rod (3) is gone up cover intrinsic positioning plate (7-1), positioning plate (7-1) both sides are provided with guide groove (4-1) or guide rail (2-1), match with guide rail (2-1) or guide groove (4-1) on the valve gap support (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266785 CN2568887Y (en) | 2002-08-30 | 2002-08-30 | Adjustable double sealing cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02266785 CN2568887Y (en) | 2002-08-30 | 2002-08-30 | Adjustable double sealing cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2568887Y true CN2568887Y (en) | 2003-08-27 |
Family
ID=33732525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02266785 Expired - Fee Related CN2568887Y (en) | 2002-08-30 | 2002-08-30 | Adjustable double sealing cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2568887Y (en) |
Cited By (1)
| 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 |
-
2002
- 2002-08-30 CN CN 02266785 patent/CN2568887Y/en not_active Expired - Fee Related
Cited By (1)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2568887Y (en) | Adjustable double sealing cut-off valve | |
| CN201326750Y (en) | Triple eccentric high-pressure metal seal butterfly valve | |
| CN2480633Y (en) | Wedge type double gate board gate valve | |
| CN207034349U (en) | A kind of gas pipeline special pneumatic gate valve | |
| CN208057975U (en) | A kind of shut-off valve with dual-seal | |
| CN2179937Y (en) | Double-seal stop valve for air conditioner | |
| CN2259535Y (en) | Combined valve | |
| CN2409389Y (en) | Three-position two-way piston valve | |
| CN2533349Y (en) | Expansion gate valve | |
| CN2506827Y (en) | Self-holder adjustable ball valve | |
| CN108331927A (en) | A kind of shut-off valve with dual-seal | |
| CN2602237Y (en) | Piston type double packing stop valve | |
| CN2419431Y (en) | Dual sealed lifting plunger valve | |
| CN2503276Y (en) | Self-sealing water-saving valve | |
| CN2568889Y (en) | Turnovering spherical cut-off valve | |
| CN214093075U (en) | Lengthened corrugated pipe sealing stop valve | |
| CN87200421U (en) | Right-angled rapid cock valve | |
| CN2343423Y (en) | Fluoroplastic full-lining stop valve for chlor-alkali | |
| CN207539430U (en) | A kind of vacuum gate valve | |
| CN2632423Y (en) | Worm gearig ball valves | |
| CN203322284U (en) | High-water-pressure shut-off valve with graphite ring | |
| CN203146836U (en) | Bellows seal stop valve with packing | |
| CN211117761U (en) | Binary channels butterfly valve | |
| CN200965075Y (en) | Cut-off valve | |
| CN219755355U (en) | Pneumatic stop valve |
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 |