CN1952455A - Flexible hard seat needle type valve with O-shape ring - Google Patents
Flexible hard seat needle type valve with O-shape ring Download PDFInfo
- Publication number
- CN1952455A CN1952455A CN 200610118291 CN200610118291A CN1952455A CN 1952455 A CN1952455 A CN 1952455A CN 200610118291 CN200610118291 CN 200610118291 CN 200610118291 A CN200610118291 A CN 200610118291A CN 1952455 A CN1952455 A CN 1952455A
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- China
- Prior art keywords
- valve
- seat
- ring
- type
- needle type
- Prior art date
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- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 9
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 3
- 239000000428 dust Substances 0.000 claims description 13
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 abstract description 20
- 239000000945 filler Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000011007 installation qualification Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Lift Valve (AREA)
Abstract
The invention relates to a needle valve with soft or hard seat of O-ring, comprising valve body, valve seat, upper valve cover and valve bar. The upper valve cover is connected with valve body and the valve seat is set in the middle of valve body. O-ring sealing, rectangle sealing and check ring is set in the lower of upper valve cover cavity in turn. The valve bar passes through o-ring, rectangle sealing and check ring. The lower of valve bar is bonded with valve seat. The lower of check ring is bonded with valve body and valve seat face and the upper is bonded with rectangle sealing for location of O-ring sealing and rectangle sealing. The valve seat of needle valve with soft seat of 0-ring is V-shaped soft seat and the material is nylon6/6. Bracing chip is set between the soft seat and the valve bar. The sealing performance of needle valve with soft and hard seat of O-ring, especially the sealing performance in high pressure, is improved by said technological scheme.
Description
Technical field
The present invention relates to a kind of O type circle soft seat or hard seat needle type valve, relate in particular to wherein sealing and the valve rod of soft seat needle type valve and the improvement of valve seat junction plane between the upper press cover and valve rod.
Background technique
Sealing between tradition soft seat needle type valve or hard seat needle type valve filler and the valve rod, is pressured compact interior Gland, makes it form the between centers extruding force to the filler in the stuffing box, thereby filler is deformed into the seal pressure of valve rod and gland is realized sealing.If needle type valve is operated under the high pressure operating mode, this sealing configuration just can't be satisfied the demand, and then causes the generation of " run, drip, leak " phenomenon.From sealing mechanism, this sealing belongs to forced sealing, in other words be to belong to a kind of leak stopping formula by motive sealing, because filler produces distortion under the impacting force effect of gland axle office, it is to successively decrease in by the valve body lateral along stem shaft that its elastic deformation force causes seal pressure, the leakage pressure of medium is then opposite, successively decreases from inside to outside, and this has just caused the difficult result of people's will to the greatest extent of sealing effect.On structure, stuffing box is arranged on the valve gap top, and outside the pressure-bearing shell, this has just destroyed the integrity of valve as the pressure-bearing shell of bearing device, the inevitable outcome that before the sky has caused filler to reveal.Traditional needle type valve be sealed into linear sealing, the hard seat of valve point and valve seat is required very high, the valve rod of integral type is more very big to the linear sealing wearing and tearing, use for a long time can cause the interior leakage of needle type valve.
For many years, leak this difficult problem in order to solve under the high pressure operating mode needle type valve filler portion and to close sealed department, valve circle has been taked various methods both at home and abroad, such as increasing the stuffing box degree of depth, and the geometrical shape of conversion filler, portion is provided with isolating ring or the like at filler.Should, these measures have obtained certain effect to solving the leakage of needle-valve filler portion, but fundamentally do not deal with problems as yet.
Summary of the invention
The technical problem to be solved in the present invention provides the O type circle soft seat or the hard seat needle type valve of a kind of good seal performance, long service life, to overcome the above-mentioned defective that existing flexible hard seat needle type valve exists.
For solving the problems of the technologies described above, O type circle soft seat provided by the present invention or hard seat needle type valve, comprise valve body, valve seat, bonnet, valve rod, bonnet connects valve body, valve seat is positioned at the valve body middle part, bonnet inner chamber bottom is placed O RunddichtringO, quad seal circle and back-up ring successively, valve rod passes O-ring seals, quad seal circle and back-up ring, the bottom of valve rod combines with valve seat, the bottom of back-up ring is with valve body and valve seat surface combination, top combines with the square seal ring, is O RunddichtringO and square seal ring location.
Adopt technique scheme, can effectively improve the sealability of soft seat or hard seat needle type valve, especially the sealability under high pressure conditions, have advantages such as sound construction, usability is stable, nothing is leaked, the life-span is long, be applicable to that petroleum industry (industry) and other cause the high pressure of valve invalidation easily, contain the gas and the liquid medium service field of abrasive material.
Description of drawings
Fig. 1 is the overall structure schematic representation of an embodiment of the present invention O shape circle soft seat needle type valve.
Fig. 2 is the integral disassembly, assembly schematic representation of Fig. 1 O shape circle soft seat needle type valve.
Among the figure, 1, valve body, 2, bonnet, 3, valve rod, 4, the square seal ring, 5, the O RunddichtringO, 6, back-up ring, 7, handle, 8, jackscrew, 9, locating stud, 10, dust cover, 11, valve seat, 12 support plates.
Embodiment
As shown in drawings, present embodiment is a kind of O type circle soft seat needle type valve, is made up of valve body 1, bonnet 2, valve rod 3, handle 7, O RunddichtringO 5, square seal ring 4, ring washer 6, valve seat 11, dust cover 10, jackscrew 8, locating stud 9.Valve body 1 is made by the square steel moulding, the two ends connecting tube; Bonnet 2 connects valve body 1, and bonnet 2 inner chamber bottoms are placed O RunddichtringO 5, square seal ring 4 and ring washer 6 from top to bottom successively; O RunddichtringO 5 is a ball-type circle shape, and material preferably adopts fluorine rubber, its effect be prevent medium from bonnet to external leaks; Square seal ring 4 is a square circle shape, and material preferably adopts fluorine rubber, is assemblied in bonnet inner chamber O type circle bottom, auxiliary O type circle block medium from bonnet to external leaks; Back-up ring 6 is a pipe spare, and its underpart combines with valve body 1 and 11 of valve seats, and top combines with square seal ring 4, for O RunddichtringO and square seal ring location, prevents that O RunddichtringO 5, square seal ring 4 from sliding up and down; Bonnet 2 external dust covers 10, valve rod 3 passes dust cover 10, and the dust cover material is plastics, prevents that dust from entering bonnet 2 inner chambers by valve rod 3 tops, and double thread and O RunddichtringO 5 produce damage; Valve rod 3 passes through dust cover 10, bonnet 11 and O RunddichtringO 5, square seal ring 4 and ring washer 6, play and close and the unlatching effect, valve rod 3 tops are fixing with handle 7 by jackscrew 8, and jackscrew 8 is the outer-hexagonal screw rod, when reversing handle 7, make and open on the valve rod 3 or descend; Valve seat 11 places the middle part of valve body, is interchangeable V-structure soft seat, and material is a nylon 6/6, between soft seat and the valve rod 3 support plate 12 is set, support plate 12 is a bridge of the nose shape, and support plate 12 prevents from may cause the unexpected inefficacy of valve seat when valve rod 3 rotations, to guarantee to use reliably; Valve rod 3 bottoms are the cone type valve head, and valve rod 3 is the conical surface with valve seat 11 bottoms and combines, and play and close by the flowing of medium, and under the downward active force of valve rod 3, the stopping medium flows fully; Locating stud 9 adopts the cylinder cotter pins, and the joint of fixed valve body 1 and bonnet 2 is used for preventing valve body 1 and bonnet 2 accidents not under the situation of installation qualification, and valve body 1 and bonnet 2 rotations break away from.
Certainly, the upper press cover of the foregoing description and the sealing configuration of valve rod are equally applicable to hard seat (metal seat) needle type valve, the difference of soft-seated valve and hard seat valve is: the valve seat of soft seat needle type valve contains the removable nylon soft seat of a slice and a support plate, with the soft combination that is combined into of valve rod; The valve seat of hard seat needle type valve is a metal seat, does not contain removable nylon soft seat and a support plate, with valve rod be combined into combining of metal to metal.
Claims (10)
1, a kind of O type circle soft seat or hard seat needle type valve, comprise valve body (1), valve seat (11), bonnet (2), valve rod (3), bonnet (2) connects valve body (1), valve seat (11) is positioned at valve body (1) middle part, it is characterized in that bonnet (2) inner chamber bottom places O RunddichtringO (5) successively, quad seal circle (4) and back-up ring (6), valve rod (3) passes O-ring seals (5), quad seal circle (4) and back-up ring (6), the bottom of valve rod (3) combines with valve seat (11), back-up ring (6) bottom combines with valve body (1) and valve seat (11) face, and top combines with square seal ring (4).
2, O type circle soft seat according to claim 1 or hard seat needle type valve is characterized in that valve rod (3) bottom is the cone type valve head, and valve seat (11) is the conical surface with valve rod (3) bottom and combines.
3, O type circle soft seat according to claim 1 and 2 or hard seat needle type valve is characterized in that O RunddichtringO (5) is a ball-type circle shape, and material is a fluorine rubber.
4, O type circle soft seat according to claim 1 and 2 or hard seat needle type valve is characterized in that square seal ring (4) is a square circle shape, and material is a fluorine rubber.
5, O type circle soft seat according to claim 3 or hard seat needle type valve is characterized in that square seal ring (4) is a square circle shape, and material is a fluorine rubber.
6, O type circle soft seat according to claim 1 and 2 or hard seat needle type valve is characterized in that the external dust cover of described bonnet (2) (10), and valve rod (3) passes dust cover (10).
7, O type circle soft seat according to claim 3 or hard seat needle type valve is characterized in that the external dust cover of described bonnet (2) (10), and valve rod (3) passes dust cover (10).
8, O type circle soft seat according to claim 4 or hard seat needle type valve is characterized in that the external dust cover of described bonnet (2) (10), and valve rod (3) passes dust cover (10).
9, O type circle soft seat according to claim 1 and 2 or hard seat needle type valve is characterized in that also being provided with locating stud (9), the joint of locating stud (9) fixed valve body (1) and bonnet (2).
10, O type circle soft seat according to claim 1 and 2 or hard seat needle type valve is characterized in that the valve seat (11) of described O type circle soft seat needle type valve is the V-structure soft seat, and material is a nylon 6/6, and support plate (12) is set between soft seat and the valve rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610118291XA CN100504128C (en) | 2006-11-10 | 2006-11-10 | Needle type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610118291XA CN100504128C (en) | 2006-11-10 | 2006-11-10 | Needle type valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1952455A true CN1952455A (en) | 2007-04-25 |
| CN100504128C CN100504128C (en) | 2009-06-24 |
Family
ID=38058921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610118291XA Active CN100504128C (en) | 2006-11-10 | 2006-11-10 | Needle type valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100504128C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509563B (en) * | 2009-03-24 | 2011-06-22 | 温州市金星阀门有限公司 | Multifunction multipath multi-control high-pressure needle valve |
| CN104676025A (en) * | 2013-12-03 | 2015-06-03 | 黄家军 | Highly sealed needle valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3761053A (en) * | 1969-10-01 | 1973-09-25 | Sno Trik Co | High pressure valve |
| US4114851A (en) * | 1976-05-10 | 1978-09-19 | Sno-Trik Company | High pressure valve |
-
2006
- 2006-11-10 CN CNB200610118291XA patent/CN100504128C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101509563B (en) * | 2009-03-24 | 2011-06-22 | 温州市金星阀门有限公司 | Multifunction multipath multi-control high-pressure needle valve |
| CN104676025A (en) * | 2013-12-03 | 2015-06-03 | 黄家军 | Highly sealed needle valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100504128C (en) | 2009-06-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20081226 Address after: Zhejiang province Wenzhou city Longwan District South Street in Yongzhong post No. 94-106 encoding: 325024 Applicant after: Wenzhou Golden Star Valve and Fitting Co., Ltd. Address before: Zhejiang province Wenzhou city Longwan District South Street in Yongzhong post No. 94-106 encoding: 325024 Applicant before: Jin Jinxing |
|
| ASS | Succession or assignment of patent right |
Owner name: WENZHOU CITY JINXING VALVE CO., LTD. Free format text: FORMER OWNER: JIN JINXING Effective date: 20081226 |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Needle valve Effective date of registration: 20150813 Granted publication date: 20090624 Pledgee: Bank of Communications Ltd Wenzhou hi tech Zone subbranch Pledgor: Wenzhou Golden Star Valve and Fitting Co., Ltd. Registration number: 2015990000550 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CP03 | Change of name, title or address |
Address after: 325000 No.2 Xingteng Road, Yongxing street, Longwan District, Wenzhou City, Zhejiang Province Patentee after: Jinxing Valve Co.,Ltd. Address before: 325024 South Street, Zhejiang province Wenzhou city Longwan District Yongzhong Street Building No. 94-106 Patentee before: WENZHOU GOLDEN STAR VALVE & FITTINGS Co.,Ltd. |
|
| CP03 | Change of name, title or address |