CN2580218Y - Piston stop valve - Google Patents
Piston stop valve Download PDFInfo
- Publication number
- CN2580218Y CN2580218Y CN 02261336 CN02261336U CN2580218Y CN 2580218 Y CN2580218 Y CN 2580218Y CN 02261336 CN02261336 CN 02261336 CN 02261336 U CN02261336 U CN 02261336U CN 2580218 Y CN2580218 Y CN 2580218Y
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- CN
- China
- Prior art keywords
- valve
- piston
- ring
- stop valve
- seat
- 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 relates to a piston stop valve, which belongs to the technical field of stop valves. A valve body is tightly matched with a valve cover, the upper end of a valve rod is connected with a handwheel, the lower end of the valve rod is connected with a piston, and the piston is correspondingly matched with an annular valve seat. The utility model is characterized in that a piston ring is arranged in an annular groove at the lower plane of the piston, and contact surfaces between the piston ring and the annular valve seat matched with the piston ring are respectively a triangular concave structure and a triangular convex structure. The piston stop valve having compact structure and reasonable structure is integrated with the advantages of the stop valve and a plunger valve. Due to the arrangement of the piston ring and the matched triangular concave and triangular convex structures as the contact surfaces between the piston ring and the annular valve seat, the piston stop valve has favorable sealing effect. The upper part of a stuffing seal ring between the valve rod and the valve cover adopts the structural design of an elastic assembly, the stuffing seal ring can always in the pressing state of elastic tracking without influence on sealing performance due to service abrasion, and thus the effects of no leakage and energy saving can be obtained.
Description
[technical field]
The utility model belongs to the machinery valve technical field.[background technique]
Existing stop valve, generally reach sealing effect by flap valve plane and valve seat planes, the two kinds of fit systems in flap valve inclined-plane and valve seat inclined-plane, because flap valve and valve seat are metallic material and make, reach that to close required pressure big, easily cause distortion, damage, sealing effect descends and causes leaking, maintenance difficult.Existing plunger valve is by seal ring and plunger seal, though there is not the shortcoming of above-mentioned stop valve, its keying speed is slow, and lower seal is washed out by media flow easily.And existing stop valve and plunger valve, the mode of gland stationary pinch is all adopted in the stuffing box packing that is provided with between its valve rod and the valve body (seal ring), and along with using wearing and tearing, its sealing effect descends gradually, influences the product usability.[technology contents]
The purpose of this utility model is to overcome the shortcoming that exists in the prior art, and the structure of existing product is improved design, and the technological scheme of the better piston stop valve of a kind of using effect is provided.
Described piston stop valve, valve body and valve gap close-fitting, the valve rod upper end connects handwheel, the lower end connects piston, piston is corresponding with ring-shaped valve seats to be cooperated, it is characterized in that being provided with piston ring in the piston lower plane annular groove, the surface of contact of piston ring and the corresponding ring-shaped valve seats that cooperates with it is respectively triangle spill, triangle convex structure.
Described piston stop valve is characterized in that the cross section of described piston ring is the structure of falling the dovetail.
Described piston stop valve, in the packing seal circle top that it is characterized in that being provided with between valve rod and the valve gap, the valve gap cavity elastic component that main body is made of spring is set, spring is respectively equipped with upper spring seat, lower spring cup in two ends up and down, and packing seal circle both sides up and down respectively is provided with Packing seat, following Packing seat.
Described piston stop valve is characterized in that described packing seal circle upper and lower surface is the triangle concave structure, and the surface of contact of the corresponding last Packing seat that cooperates with it, following Packing seat is the triangle convex structure.
This piston stop valve structure compactness, rationally integrates the advantage of stop valve and plunger valve.Because piston ring is set, and the surface of contact of piston ring and ring-shaped valve seats matches with triangle spill, triangle convex structure, makes its sealing effect better.The structural design of elastic component is adopted on packing seal circle top between valve rod and the valve gap, makes the packing seal circle be in the impaction state that elasticity is followed the tracks of all the time, can not influence sealability because of using wearing and tearing, leaks and energy-saving effect thereby realize not having.[description of drawings and embodiment]
Below in conjunction with Figure of description, the utility model is described in further detail, and provide embodiment.
Fig. 1 is a piston stop valve structure schematic representation.
As shown in the figure, valve body 1 and valve gap 2 be by bolt 3 close-fittings, valve rod 17 upper end attaching nuts 19, and up-thrust bearing 20, lower thrust-bearing 18, clamp ring 21 are set, and nut 19 connects handwheels 22, and is fastening by tight cap 23.Valve rod 17 lower ends connect piston 14, and fastening by piston cap 16 and bolt 15.Spring 10 and corresponding upper spring seat 11, lower spring cup 9 are set in valve gap 2 cavitys.Be provided with packing seal circle 7 between valve rod 17 and the valve gap 2, the packing seal circle is provided with Packing seat 8, following Packing seat 6 and corresponding packing bushing 5 respectively in both sides about in the of 7, and fastening by hexagon socket head cap screw 4.Spring 10 produces elastic pressure, by last Packing seat 8 extruding packing seal circles 7, makes packing seal circle 7 follow the tracks of sealing with valve rod 17 all the time by lower spring cup 9, can not influence sealing effect because of using wearing and tearing.Inlay piston ring (seal ring) 13 in the lower plane annular groove of piston 14, the corresponding fitted seal in protruding triangle two inclined-planes of recessed triangle two inclined-planes of piston ring 13 and the ring-shaped valve seats 12 of close-fitting on valve body.The cross section of piston ring 13 is down dovetail shaped, makes its difficult drop-off.Because piston ring 13 is arranged in the piston 14 lower plane annular grooves, its sealing surface is difficult for being dashed damage and piling up impurity by medium.Rotation hand wheel 22 drives piston 14 by nut 9, valve rod 17 and moves up and down opening/shutting valve.
Claims (4)
1. piston stop valve, valve body (1) and valve gap (2) close-fitting, valve rod (17) upper end connects handwheel (22), the lower end connects piston (14), piston (14) and corresponding cooperation of ring-shaped valve seats (12), it is characterized in that being provided with piston ring (13) in piston (14) the lower plane annular groove, the surface of contact of piston ring (13) and the corresponding ring-shaped valve seats (12) that cooperates with it is respectively triangle spill, triangle convex structure.
2. a kind of piston stop valve as claimed in claim 1 is characterized in that the cross section of described piston ring (13) is the structure of falling the dovetail.
3. a kind of piston stop valve as claimed in claim 1, in packing seal circle (7) top that it is characterized in that between valve rod (17) and the valve gap (2) being provided with, valve gap (2) cavity elastic component that main body is made of spring (10) is set, spring (10) two ends up and down is respectively equipped with upper spring seat (11), lower spring cup (9), and packing seal circle (7) both sides up and down respectively is provided with Packing seat (8), following Packing seat (6).
4. a kind of piston stop valve as claimed in claim 3 is characterized in that described packing seal circle (7) upper and lower surface is the triangle concave structure, and the surface of contact of the corresponding last Packing seat (8) that cooperates with it, following Packing seat (6) is the triangle convex structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02261336 CN2580218Y (en) | 2002-11-07 | 2002-11-07 | Piston stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02261336 CN2580218Y (en) | 2002-11-07 | 2002-11-07 | Piston stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2580218Y true CN2580218Y (en) | 2003-10-15 |
Family
ID=33728150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02261336 Expired - Fee Related CN2580218Y (en) | 2002-11-07 | 2002-11-07 | Piston stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2580218Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818817A (en) * | 2010-03-30 | 2010-09-01 | 西安石油大学 | Anode protection anticorrosion valve |
| CN114110178A (en) * | 2021-09-28 | 2022-03-01 | 瑟维斯泵阀制造(浙江)有限公司 | Stainless steel stop valve |
-
2002
- 2002-11-07 CN CN 02261336 patent/CN2580218Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818817A (en) * | 2010-03-30 | 2010-09-01 | 西安石油大学 | Anode protection anticorrosion valve |
| CN101818817B (en) * | 2010-03-30 | 2012-03-28 | 西安石油大学 | Anode protection anticorrosion valve |
| CN114110178A (en) * | 2021-09-28 | 2022-03-01 | 瑟维斯泵阀制造(浙江)有限公司 | Stainless steel stop valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20031015 Termination date: 20101107 |