CN201373112Y - Constrained seal cut-off valve - Google Patents
Constrained seal cut-off valve Download PDFInfo
- Publication number
- CN201373112Y CN201373112Y CN200920079680U CN200920079680U CN201373112Y CN 201373112 Y CN201373112 Y CN 201373112Y CN 200920079680 U CN200920079680 U CN 200920079680U CN 200920079680 U CN200920079680 U CN 200920079680U CN 201373112 Y CN201373112 Y CN 201373112Y
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- CN
- China
- Prior art keywords
- valve
- spool
- valve rod
- rod
- bearing
- 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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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a constrained seal cut-off valve which comprises a valve body, a valve core, a valve rod, a valve cover, a dust guard and a switch indicator. A valve rod liner is arranged at the extension part of the valve cover along the valve rod and a filling seat, fillings and a filling gland are arranged on the valve rode liner. The upper end of the valve cover is provided with a valve rode nut, a bearing, a bearing gland and a guiding screw. The valve body is provided with a sealing ring and a valve seat body and the lower part of the valve core is provided with an arc surface which is in contact with the bottom of a groove of the liner. Small clearance fit is realized between the valve core and the valve rod and the valve core is provided with a rigid pin roll which slides relative to two plane of the valve rod. The lower part of the valve core is provided with an arc surface which is in contact with the bottom of the plane of the groove of the liner. The sealing surface of the valve core is welded with stainless steel or hard alloy, with a discharge hole in the middle part. The upper end of the valve cover is provided with a ball thrust bearing. The excircle of the valve rod liner is provided with screw thread, with holes in the middle part. The constrained seal cut-off valve has the advantages of long service life of the sealing surface and no friction.
Description
Technical field:
The utility model relates to a kind of valve, is specifically related to a kind of forced sealing block valve.
Background technique:
Existing common ball-type block valve, employing floating ball and fixedly spherical structure mostly, rely on the elastic element at valve left and right sides valve body or valve seat back that sealing force is provided, solve the sealing problem of valve, this structure just fits together from the assembling beginning tightly because of ball seal face and sealing surface of seat, in use, valve of every keying, all can cause certain wearing and tearing, and, open and close very effort because of frictional force is big to ball seal face and valve seat, like this, the sealing surface life-span of valve is very short, and it is frequent to change valve, is unfavorable for using.Cause a large amount of wastes of resource.Old friends are making great efforts to seek long, frictionless block valve of a kind of sealing surface life-span.
The model utility content:
Technical problem to be solved in the utility model is how long, frictionless forced sealing block valve of a kind of sealing surface life-span is provided.
The technical problem that the utility model proposed is to solve like this: construct a kind of forced sealing block valve, comprise valve body, spool, valve rod, valve gap, dust-proof cover, switch indicator, it is characterized in that: valve gap is provided with valve lever bushing along the valve rod extension, valve lever bushing is provided with filler seat, filler and Gland, the valve gap upper end is provided with Stem Mut, bearing, bearing gland and guider screw, valve body is provided with seal ring, valve body, and an arc profile that contacts with the lining bottom portion of groove is arranged at the spool bottom.
Be little Spielpassung between described spool and the valve rod, spool is provided with the rigidity bearing pin with valve rod two plane slide relative, and an arc profile that contacts with lining groove planar base is arranged at the spool bottom.
Described valve core sealed cover is welded with stainless steel or cemented carbide, and the middle part is provided with flowing hole.
Described valve gap upper end is provided with thrust ball bearing.
Described valve lever bushing excircle part has screw thread, and the middle part is porose.
Advantage of the present utility model is: can realize the entrance point sealing, spool is subjected to the effect of valve rod external force to produce thrust on sealing surface of seat, and sealing force can strengthen or weaken by valve rod.Good seal performance, because existing universal ball valve when closing, leans on medium self pressure and assembling or initial tension of spring to realize sealing fully, can't allow external force increase sealing force, the utility model then can produce thrust to spool by the lifting of valve rod, realizes forced seal.The sealing surface life-span is long, during because of valve opening and closing, does not have friction between valve core sealed cover and the sealing surface of seat, and therefore, sealing surface is easy damaged not, long service life.
Description of drawings:
Fig. 1 is the structural representation of forced sealing block valve
Fig. 2 is the structural representation at the sealing position of forced sealing block valve
Wherein: 1, valve body; 2, spool; 3, valve rod; 4, valve gap; 5, filler; 6, Gland; 7, Stem Mut; 8, bearing; 9, dust-proof cover; 10, bearing gland; 11, guider screw; 12, filler seat; 13, valve lever bushing; 14, seal ring; 15, valve body, 16, switch indicator.
Embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
As Fig. 1-shown in Figure 2, a kind of forced sealing block valve, comprise valve body 1, spool 2, valve rod 3, valve gap 4, dust-proof cover 9, switch indicator 16, valve gap 4 is provided with valve lever bushing 13 along valve rod 3 extensions, valve lever bushing 13 is provided with filler seat 12, filler 5 and Gland 6, valve gap 4 upper ends are provided with Stem Mut 7, bearing 8, bearing gland 10 and guider screw 11, and valve body 1 is provided with seal ring 14, valve body 15, and an arc profile that contacts with the lining bottom portion of groove is arranged at spool 2 bottoms.Be little Spielpassung between described spool 2 and the valve rod 3, spool 2 is provided with the rigidity bearing pin with 3 liang of plane slide relative of valve rod, and an arc profile that contacts with lining groove planar base is arranged at spool 2 bottoms.Described valve core sealed cover is welded with stainless steel or cemented carbide, and the middle part is provided with flowing hole.Described valve gap 4 upper ends are provided with thrust ball bearing.Described valve lever bushing 13 excircle part have screw thread, and the middle part is porose.
According to forced sealing block valve provided by the utility model, spool drives spool and tilts by the rotation compound motion that reaches up and down of valve rod, motions such as rotation, the disengaging of realization spool and valve seat. engage the unlatching of realization valve.During unlatching, valve core sealed cover breaks away from sealing surface of seat in advance, and half-twist is realized opening again.When closing, spool elder generation half-twist, valve core sealed cover moves closer to sealing surface of seat again, realizes closing.And pass through the descending of valve rod, and spool is applied a pressure, act on the sealing surface of seat, finally realize the seal request of valve.
Claims (5)
1, a kind of forced sealing block valve, comprise valve body (1), spool (2), valve rod (3), valve gap (4), dust-proof cover (9), switch indicator (16), it is characterized in that: valve gap (4) is provided with valve lever bushing (13) along valve rod (3) extension, valve lever bushing (13) is provided with filler seat (12), filler (5) and Gland (6), valve gap (4) upper end is provided with Stem Mut (7), bearing (8), bearing gland (10) and guider screw (11), valve body (1) is provided with seal ring (14), valve body (15), an arc profile that contacts with the lining bottom portion of groove is arranged at spool (2) bottom.
2, a kind of forced sealing block valve according to claim 1, it is characterized in that: be little Spielpassung between spool (2) and the valve rod (3), spool (2) is provided with the rigidity bearing pin with valve rod (3) two plane slide relative, and an arc profile that contacts with lining groove planar base is arranged at spool (2) bottom.
3, a kind of forced sealing block valve according to claim 1, it is characterized in that: valve core sealed cover is welded with stainless steel or cemented carbide, and the middle part is provided with flowing hole.
4, a kind of forced sealing block valve according to claim 1 is characterized in that: valve gap (4) upper end is provided with thrust ball bearing.
5, a kind of forced sealing block valve according to claim 1 is characterized in that: valve lever bushing (13) excircle part has screw thread, and the middle part is porose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920079680U CN201373112Y (en) | 2009-03-20 | 2009-03-20 | Constrained seal cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920079680U CN201373112Y (en) | 2009-03-20 | 2009-03-20 | Constrained seal cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201373112Y true CN201373112Y (en) | 2009-12-30 |
Family
ID=41499193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920079680U Expired - Fee Related CN201373112Y (en) | 2009-03-20 | 2009-03-20 | Constrained seal cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201373112Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155581A (en) * | 2011-03-30 | 2011-08-17 | 浙江理工大学 | Multiple-sealing and split-flow decompression throttling stop valve |
| CN105952915A (en) * | 2016-07-14 | 2016-09-21 | 杭州安其拉科技有限公司 | Ammonia valve |
-
2009
- 2009-03-20 CN CN200920079680U patent/CN201373112Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155581A (en) * | 2011-03-30 | 2011-08-17 | 浙江理工大学 | Multiple-sealing and split-flow decompression throttling stop valve |
| CN105952915A (en) * | 2016-07-14 | 2016-09-21 | 杭州安其拉科技有限公司 | Ammonia valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20160320 |