CN101886708B - Eccentric/concentric combined sealing valve seat - Google Patents
Eccentric/concentric combined sealing valve seat Download PDFInfo
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- CN101886708B CN101886708B CN2010102530659A CN201010253065A CN101886708B CN 101886708 B CN101886708 B CN 101886708B CN 2010102530659 A CN2010102530659 A CN 2010102530659A CN 201010253065 A CN201010253065 A CN 201010253065A CN 101886708 B CN101886708 B CN 101886708B
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- sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 47
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004217 heart function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to an eccentric/concentric combined sealing valve seat which is arranged in the body channel mouth of a three-way change valve comprising a valve body, a spherical double-channel valve plug, a valve cap and a start-stop shaft. The eccentric/concentric combined sealing valve seat is formed by concentric sealing valve seats and eccentric sealing valve seats which are arranged at the two ends of the channel mouths of the valve body and the valve plug. The valve seat and the valve plug are fit and sealed by spring pre-tightening force and medium pressure. The eccentric/concentric combined sealing valve seat comprises eccentric sealing valve seat bodies, concentric sealing valve seat bodies, plate springs, bearing rings, eccentric sealing rings, valve seat pressure caps, sealing gaskets, adjusting gaskets, eccentric soft seals and concentric sealing rings. The eccentric/concentric combined sealing valve seat ensures high valve sealing grade, can achieve zero leakage, thoroughly eliminates the problems of valve blocking and inflexible opening, has the service life as long as more than 200000 times, has good use effect on the chemical pipelines and does not have faults till now.
Description
Technical field
The present invention relates to valve, refer in particular to the eccentric/concentric combined sealing valve seat after a kind of three-way diverter valve seal en-hancement.
Background technique
Following two kinds of structure: the A of the general employing of three-way diverter valve domestic at present and import: valve flowing channel mouth axis is crossed the center of circle of valve body and spool, for example three-way valve at 60 ° of angles.B: there are a centripetal moment, for example three-way valve at 45 ° and 30 ° angles in the center of circle of valve flowing channel mouth axis and valve body and spool.The A architecture is simple, and is easy to process, good airproof performance, but structure is huge, particularly in the angle of three-way valve below 45 ° the time owing to adopt the A structure, physical dimension is too big, cost is higher, the general B structure that adopts can significantly reduce the size of three-way valve like this, thereby reduce cost, but its sealing is not so good, and the sealing grade of the three-way valve of employing B structure is all below the V level.Because the sealing grade is not high, the three-way valve of import and homemade employing B structure very easily stockpiles medium in the valve pocket in the medium of solid particle is arranged, cause valve opening not freely up to stuck.
Summary of the invention
The objective of the invention is to be improved and innovate at the shortcoming that exists in the background technique and problem, provide a kind of simple in structure, cost is low, adapt to various particular job environment, particularly contain solid particle polluter, the band eccentric/concentric combined sealing valve seat of the three-way diverter valve of the demanding working environment of sealability.
Technological scheme of the present invention is in a kind of valve flowing channel mouth that is arranged on the three-way diverter valve that comprises valve body, spherical double flow channel spool, valve gap and opening-closing shaft of structure, it is made up of concentric seal valve seat and eccentric sealed valve seat, be arranged on valve body and spool runner mouth two ends, by initial tension of spring and pressure medium valve seat and spool being fitted seals, comprise eccentric sealed valve body, concentric seal valve pedestal, planar spring, supporting ring, eccentric sealed circle, valve seat pressure cap, sealing gasket, spacer, eccentric soft seal and concentric seal ring, wherein:
The seal valve pedestal is located between spool runner mouth and the valve interior wall with one heart, and concentric and angled with the valve flowing channel mouth with spool; Eccentric sealed valve body is located at the external circle of concentric seal valve seat, and its runner mouth is consistent with the valve flowing channel mouth, is set for the eccentric with spool runner mouth;
Described concentric seal ring and planar spring are located between concentric seal valve pedestal and the eccentric sealed valve body, and valve seat pressure cap, support ring, spacer, sealing gasket are located at the end of eccentric sealed valve body and eccentric sealed circle.
Advantage of the present invention and beneficial effect:
The present invention makes valve seal grade height, can reach zero leakage, has thoroughly eliminated the stuck and inflexible problem of unlatching of valve.Can reach working life more than 20 ten thousand times, the present invention's using effect on chemical pipeline is good, any fault do not occur.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, the present invention is arranged in the valve flowing channel mouth of the three-way diverter valve that comprises valve body 1, spherical double flow channel spool 2, valve gap and opening-closing shaft, it is made up of concentric seal valve seat and eccentric sealed valve seat, be arranged on valve body 1 and spool 2 runner mouth two ends, by initial tension of spring and pressure medium valve seat and spool 2 being fitted seals, comprise eccentric sealed valve body 4, concentric seal valve pedestal 5, planar spring 12, supporting ring 7, eccentric sealed circle 6, valve seat pressure cap 8, sealing gasket 9, spacer 10, eccentric soft seal 13 and concentric seal ring 11, wherein:
Described concentric seal ring 11 and planar spring 12 are located between concentric seal valve pedestal 5 and the eccentric sealed valve body 4, and valve seat pressure cap 8, support ring 7, spacer 10, sealing gasket 9 are located at the end of eccentric sealed valve body 4 and eccentric sealed circle 6.
Valve body 1 of the present invention is for being provided with the three-way diverter valve of three import and export, one of them import and export is located at two other import and export that are oppositely arranged and forms Y type passage less than the miter angle position, sealing in valve seat pressure cap 8 is located at and imports and exports also is provided with auxiliary seal 3 on the described valve body 1.Described two import and export that are oppositely arranged form sprue 14, and sprue 14 1 sides are provided with by-pass flow road 15, form II type runner.
Design principle of the present invention:
The concentric seal valve seat of eccentric/concentric combined sealing valve seat of the present invention, because its axis was the centre of sphere of spool sphere, automatically look for the heart to be close on the sphere of spool making it under the pressure of pretightening force and medium, play seal action, this moment, concentric seal valve seat was subjected to the effect of two power, 1. the annulus area of the concentric seal valve seat of pressure * of pressure medium F=medium, 2. the pretightening force Q(of elastic sealing strip is fixed by design), these two power are formed the sealing force that seals between concentric seal valve seat and the spool, (surface friction drag of having ignored some seals) is to guarantee by O RunddichtringO and elasticity lip seal circle with one heart between seal valve seat and the eccentric sealed valve seat.
Eccentric sealed valve seat in the eccentric/concentric combined sealing valve seat of the present invention, under the effect of pretightening force and pressure medium, eccentric sealed valve seat is close on the spool, but because the dead in line of it and runner mouth and the centre of sphere by spool not, make it can not look for the heart automatically, in order to allow its sealing grade improve, the processing of it and spool surface of contact is difficulty very, eccentric sealed valve seat and spool perfection are fit together, play seal action, theory is passable, but does not accomplish substantially in reality processing, because precision machining all has deviation again, owing to do not look for heart function automatically, so will lean on this valve seat will guarantee that sealed type is difficult to, so the preferably soft seal of its seal ring, by strengthen pretightening force by force with the seal ring compressive strain with the compensation machining accuracy with can not adjust the problem of looking for the heart automatically.If adopt hard sealing, it can only be to do auxiliary seal, and the sealing grade is done many in the V level.Therefore, the effect that eccentric soft seal valve seat is subjected to two power is the 2. pretightening force Q of elastic sealing strip (fixed by design) of annulus area of the eccentric sealed valve seat of pressure F=pressure medium * of medium 1., these two power are formed the sealing force (surface friction drag of having ignored certain annex) that seals between eccentric sealed valve seat and the spool, and the sealing of eccentric sealed valve seat and concentric seal valve seat and valve body is to guarantee by two cover O RunddichtringOs and elasticity lip seal circle respectively.
Though the present invention changes the sealing of first road into concentric sealing by off-centre, improved its sealing grade greatly, but lean on hard sealing to guarantee that the zero leakage of gaseous medium is impossible, all seal up solid state medium in medium with hard-hearted seal valve seat this moment, leak level few once the part gaseous medium lived by the soft seal valve base sealing of off-centre at once, make it to form channelling effect (effect that dripping water wears through rock), guarantee the zero leakage of valve, it is bad to guarantee that the spool valve seat is not washed away by channelling effect, guarantees the working life of valve.Elastic sealing strip guarantees that medium does not leak between stack valve seat and the valve body simultaneously, between the eccentric and concentric valve seat, forms fouling, causes because fouling makes valve switch phenomenon not in place.
Three-way diverter valve of the present invention makes up seal valve seat partially with one heart by valve body, last bottom flange, spool, opening-closing shaft and the present invention and forms, its valve body and last bottom flange middle cavity are provided with the ball-type spool, the combination seal valve seat is arranged in the valve flowing channel mouth partially with one heart, and opening-closing shaft is arranged in the middle of bottom flange and the spool.Described spool is Y type or II type runner, and opening-closing shaft passes bottom flange and is arranged on the spool two ends.Described seal valve seat forms by making up valve seat combination partially with one heart.Wherein seal valve seat is the sealing of first road with one heart, and eccentric sealed valve seat is the effect of auxiliary seal and supporting combination seal valve seat.The dead in line of the axis of the eccentric sealed valve seat of the present invention and valve body spool runner mouth, but the center by valve body and spool not, and with one heart the axis of seal valve seat by valve body and center spool and and spool valve body runner mouth is inconsistent that an angle arranged, this angle is relevant with the valve flowing channel bicker.
Embodiment of the present invention only is the description that preferred implementation of the present invention is carried out; be not that design of the present invention and scope are limited; under the prerequisite that does not break away from design philosophy of the present invention; engineers and technicians make technological scheme of the present invention in related domain various modification and improvement; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection all is documented in claims.
Claims (3)
1. an eccentric/concentric combined sealing valve seat is arranged in the valve flowing channel mouth of the three-way diverter valve that comprises valve body (1), spherical double flow channel spool (2), valve gap and opening-closing shaft, it is characterized in that:
It is made up of concentric seal valve seat and eccentric sealed valve seat, is arranged on valve body (1) and spool (2) runner mouth two ends, by initial tension of spring and pressure medium valve seat and spool (2) is fitted and seals, comprise eccentric sealed valve body (4), concentric seal valve pedestal (5), planar spring (12), supporting ring (7), eccentric sealed circle (6), valve seat pressure cap (8), sealing gasket (9), spacer (10), eccentric soft seal (13) and concentric seal ring (11), wherein:
With one heart seal valve pedestal (5) is located between spool (2) runner mouth and valve body (1) inwall, and and spool (2) concentric and angled with valve body (1) runner mouth; Eccentric sealed valve body (4) is located at concentric seal valve pedestal (5) outer ring, and its runner mouth is consistent with the valve flowing channel mouth, is set for the eccentric with spool (2) runner mouth;
Described concentric seal ring (11) and planar spring (12) are located between concentric seal valve pedestal (5) and the eccentric sealed valve body (4), and valve seat pressure cap (8), support ring (7), spacer (10), sealing gasket (9) are located at the end of eccentric sealed valve body (4) and eccentric sealed circle (6).
2. eccentric/concentric combined sealing valve seat according to claim 1, it is characterized in that described valve body (1) is for being provided with the three-way diverter valve of three import and export, one of them import and export is located at two other import and export that are oppositely arranged and forms Y type passage less than the miter angle position, sealing in valve seat pressure cap (8) is located at and imports and exports also is provided with auxiliary seal (3) on the described valve body (1).
3. eccentric/concentric combined sealing valve seat according to claim 2 is characterized in that described two import and export that are oppositely arranged form sprue (14), and sprue (14) one sides are provided with by-pass flow road (15), form II type runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102530659A CN101886708B (en) | 2010-08-16 | 2010-08-16 | Eccentric/concentric combined sealing valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102530659A CN101886708B (en) | 2010-08-16 | 2010-08-16 | Eccentric/concentric combined sealing valve seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886708A CN101886708A (en) | 2010-11-17 |
| CN101886708B true CN101886708B (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102530659A Expired - Fee Related CN101886708B (en) | 2010-08-16 | 2010-08-16 | Eccentric/concentric combined sealing valve seat |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269161B (en) * | 2011-04-22 | 2012-11-14 | 三一重工股份有限公司 | Pumping mechanism and distribution valve thereof, and concrete pumping machine |
| CN103375608A (en) * | 2012-04-26 | 2013-10-30 | 中国石油化工股份有限公司 | Three-in-one V-type reversing valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246497Y (en) * | 2008-07-23 | 2009-05-27 | 岳阳东方自控工程设备有限公司 | Powder coal triplet commutation ball valve |
| CN201531641U (en) * | 2009-10-30 | 2010-07-21 | 吴军 | Combined sealing stationary type bullet valve |
| CN201705986U (en) * | 2010-08-16 | 2011-01-12 | 岳阳东方自控工程设备有限公司 | Eccentric and concentric combined sealing valve seat |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1034107A (en) * | 1975-02-11 | 1978-07-04 | Edward B. Myers | Rotary valve |
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2010
- 2010-08-16 CN CN2010102530659A patent/CN101886708B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201246497Y (en) * | 2008-07-23 | 2009-05-27 | 岳阳东方自控工程设备有限公司 | Powder coal triplet commutation ball valve |
| CN201531641U (en) * | 2009-10-30 | 2010-07-21 | 吴军 | Combined sealing stationary type bullet valve |
| CN201705986U (en) * | 2010-08-16 | 2011-01-12 | 岳阳东方自控工程设备有限公司 | Eccentric and concentric combined sealing valve seat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101886708A (en) | 2010-11-17 |
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Effective date of registration: 20101220 Address after: 414000 Hunan Yueyang economic and Technological Development Zone Bai Shiling road Yueyang Dongfang automatic control engineering equipment Co., Ltd. Applicant after: Wu Jun Address before: 414000 Yueyang economic and Technological Development Zone, Hunan Shiling Road Applicant before: YUEYANG DONGFANG AUTOMATIC CONTROL ENGINEERING EQUIPMENT Co.,Ltd. |
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Application publication date: 20101117 Assignee: YUEYANG DONGFANG AUTOMATIC CONTROL ENGINEERING EQUIPMENT Co.,Ltd. Assignor: Wu Jun Contract record no.: 2014430000103 Denomination of invention: Eccentric/concentric combined sealing valve seat Granted publication date: 20110928 License type: Exclusive License Record date: 20140618 |
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Granted publication date: 20110928 |