CN104180065B - Reciprocating-type valve core non-return sealing structure - Google Patents
Reciprocating-type valve core non-return sealing structure Download PDFInfo
- Publication number
- CN104180065B CN104180065B CN201410402921.0A CN201410402921A CN104180065B CN 104180065 B CN104180065 B CN 104180065B CN 201410402921 A CN201410402921 A CN 201410402921A CN 104180065 B CN104180065 B CN 104180065B
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- sealing
- retaining
- groove
- sealing nut
- valve rod
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- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 230000013011 mating Effects 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000005520 electrodynamics Effects 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to a reciprocating-type valve core non-return sealing structure, and belongs to the technical field of electrically operated valve sealing structures. The reciprocating-type valve core non-return sealing structure comprises a valve core body, a sealing nut, a valve rod, O-shaped rings, a cone-shaped elastic clamp spring, an open check ring, a spring cushion and a spring, wherein the sealing nut is in threaded connection onto the valve core body, a positioning plane surface is arranged on the upper end surface of the sealing nut, a through hole is formed in the medial axis of the sealing nut, and a sealing groove and a non-return groove, which are adjacently arranged from top to bottom, are formed in the inner wall of the middle part of the through hole; O-shaped rings are mounted in the sealing groove, the cone-shaped elastic clamp spring is fixed to the non-return groove, the open check ring is fixed to the valve rod, the valve rod positioned at the upper part of the open check ring penetrates into the sealing nut through the lower end of the through hole, then sequentially penetrates through the cone-shaped elastic clamp spring, and the O-shaped rings, and finally penetrates out of the sealing nut from the upper end of the through hole; the spring cushion and the spring are sequentially mounted on the valve rod positioned at the lower part of the open check ring from top to bottom. The reciprocating-type valve core non-return sealing structure provided by the invention has the advantages that the sealing performance is high, the service life is long, and the manufacturing cost is low.
Description
Technical field
The present invention relates to a kind of reciprocating valve element retaining sealing structure, belong to the technical field of electrodynamic valve sealing structure.
Background technology
The valve rod leak-proof structure making to pump in current electrodynamic valve common are: 1. valve rod, sealing ring with close
Envelope nut cooperation is assemblied in the big valve gap of electrodynamic valve realizes sealing, the such as scheme of 200420020353.x patent disclosure, sealing
Nut and spring are all to act directly on sealing ring, and the seal compression of sealing ring is wayward, and during up and down motion, spring is non-
Regular sealing ring is applied with carrying, sealing effectiveness and service life are affected, and valve rod pumps work one
After the section time, if the accessory that leakage need to remove correlation, maintenance is more difficult；2. in addition, keeping in repair for convenience or changing, electricity
The valve element of dynamic valve makes as the mode of modular assembly, wherein a: valve rod, sealing ring and sealing nut cooperation are assemblied in valve core
Interior realization sealing, the valve core external form of this class formation is bigger than normal, considers further that the cost of sealing nut, leads to high expensive, and assembles
When need gluing and screw thread, low production efficiency；The interference that b: valve rod, sealing ring pass through between metallic gasket and sealing nut is tight
Fix and to realize sealing, in practical work process, because valve rod up and down reciprocatingly frequently moves, occur in that part metals pad comes off
Lead to the exception of seal failure.Through above-mentioned analysis it is known that existing common valve rod leak-proof structure has structural instability, production
The problems such as efficiency is low, production cost is high, is therefore difficult to widely use.
Content of the invention
It is an object of the invention to provide a kind of sealing property height, long service life, the reciprocating valve element of low production cost stop
Move back sealing structure.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is:
A kind of reciprocating valve element retaining sealing structure, including valve core, sealing nut, valve rod, o type circle, cone shaped elastic card
Spring, split washer, spring pad, spring；Sealing nut is threaded on valve core；It is flat that sealing nut upper surface is set to positioning
Face, the axis of sealing nut offers through hole, be disposed adjacent on the middle part inwall of through hole and from top to bottom sealed groove,
Retaining groove；O type circle is arranged in sealed groove, and cone shaped elastic jump ring is fixed in retaining groove；Split washer is fixed on valve
On bar, the valve rod positioned at split washer upper part penetrates sealing nut by through hole lower end, and sequentially pass through cone shaped elastic jump ring,
O type circle, finally passes to sealing nut from through hole upper end；Spring pad and spring are then from top to bottom mounted on opening successively
On the lower sections of valve rod of back-up ring.
As the setting further of such scheme, described cone shaped elastic jump ring is provided with stationary plane, seal face, inner conical
Face, retaining mating surface and several crack arrest groove, crack arrest groove is evenly distributed in retaining mating surface.
The bottom of described retaining groove is provided with retaining locating surface, and the cooperation holding of retaining mating surface is on retaining locating surface.
Described crack arrest groove offers four altogether.
The present invention arranges through hole, sealed groove and retaining groove in sealing nut, and valve rod passes through through hole, o type circle to be placed in
In sealed groove, cone shaped elastic jump ring is placed in retaining groove and o type circle is fixed (only need to be with special tooling by taper during assembling
Elastic circlip is pressed into) it is ensured that the rational positioning of o type circle and seal compression, also just valve rod is formed with effective sealing.
In a word, by improving, present configuration sealing property that is simple, simultaneously improving valve and service life, guarantee whole
The stable operation of pipe-line system equipment, and production and processing and assembling simple, easy to maintenance, with low cost be easy to promote the use of.
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of sealing nut in the present invention；
Fig. 3 is the structural representation of cone shaped elastic jump ring in the present invention；
Fig. 4 is the a-a of Fig. 3 to cross section structure diagram.
Specific embodiment
As shown in Figure 1, Figure 2, Figure 3, Figure 4, the present invention reciprocating valve element retaining sealing structure, including valve core 1, sealing spiral shell
Cap 2, valve rod 3, o type circle 4, cone shaped elastic jump ring 5, split washer 6, spring pad 7, spring 8.Sealing nut 2 is threaded in valve
On core body 1.Sealing nut 2 upper surface is set to position plane 21, and the axis of sealing nut 2 offers through hole 22, through hole 22
Middle part inwall on and be from top to bottom disposed adjacent sealed groove 23, retaining groove 24, o type circle 4 is arranged on sealed groove 23
Interior, cone shaped elastic jump ring 5 is fixed in retaining groove 24.Split washer 6 is fixed on valve rod 3, positioned at split washer 6 upper surface portion
The valve rod 3 dividing penetrates sealing nut 2 by through hole 22 lower end, and sequentially passes through cone shaped elastic jump ring 5, o type circle 4, finally from through hole
22 upper ends pass to outside sealing nut 2；Spring pad 7 and spring 8 are then from top to bottom mounted on split washer 6 lower face successively
On the valve rod 3 dividing.
For improving sealing property and the service life of the present invention further, the cone shaped elastic jump ring 5 of the present invention is provided with admittedly
Determine face 51, seal face 52, inner conical face 53, retaining mating surface 54 and several crack arrest groove 55, crack arrest groove 55 is evenly distributed on retaining
In mating surface 54.Specifically, cone shaped elastic jump ring 5 includes the truncated cone-shaped body 57 offering installing hole 56 on axis, this
Body 57 upper surface is stationary plane 51, and body 57 lower surface is retaining mating surface 54, retaining mating surface 54 offers and body 57
Concentric round platform connected in star 58, the bottom land of groove 58 is seal face 52, and the cell wall of groove 58 is inner conical face 53, and retaining coordinates
Several crack arrest grooves 55 are also uniformly offered on face 54, crack arrest groove 55 inwardly runs through cell wall by body 57 outer wall.In the present embodiment, only
Split groove 55 and preferably offer four.
The design of crack arrest groove 55, can prevent cone shaped elastic jump ring 5 produce during being manufactured material tear and deformation,
Produce the defects such as burr, to prevent from further affecting the sealing property of o type circle 4 after its assembling, meanwhile, crack arrest groove 55 can also subtract
Deformation force after few molding (no crack arrest groove when bending after drive that taper seat is yielding, residual stress can affect the gap with valve rod 3,
Increase friction and scratch valve rod 3 external cylindrical surface, lead to seal failure), it is easy to when assembling, easily be pressed on the retaining ditch of sealing nut 2
In groove 24.
The present invention is provided with retaining locating surface 25 in the bottom of retaining groove 24, and retaining mating surface 54 cooperation holding is fixed in retaining
On plane 25.Only with special tooling, cone shaped elastic jump ring 5 need to be pressed into retaining groove 24 during assembling, make cone shaped elastic jump ring
In retaining groove 24, retaining mating surface 54 and retaining locating surface 25 coordinate simultaneously, to prevent cone shaped elastic for 5 radially compressed holdings
Jump ring 5 comes off.In the present invention, the stationary plane 51 on cone shaped elastic jump ring 5 also defines the downward range of activity of o type circle 4.
After present invention assembling, sealing nut 2, o type circle 4 and cone shaped elastic jump ring 5 define the relatively-stationary assembly in position,
On valve rod 3, clamping assembles split washer 6 and also form the relatively-stationary assembly in position；Valve rod 3 is above split washer 6
Divide the through hole 22 sequentially passing through cone shaped elastic jump ring 5, o type circle 4 and sealing nut 2, valve rod 3 is in the lower part of split washer 6
Sequentially pass through spring pad 7 and spring 8, after sealing nut 2 and valve core 1 are screwed by screw thread, spring 8 is in compressive state, protects
Can automatically reset during card valve rod 3 up and down reciprocatingly action, also ensure that o type circle 4 is sliding in the sealed groove 23 of sealing nut 2 simultaneously
Dynamic, allow o type circle 4 ensure rational decrement and deflection, effective sealing is formed to the valve rod 3 of up and down reciprocatingly action it is ensured that valve
Sealing property and service life.
In the present invention, sealing nut 2 is processed through precision optical machinery by metal material, surface smoothness high and and regular shape,
Dimensional accuracy is high, and sealing property is effectively ensured.
In the present invention, cone shaped elastic jump ring 5 is corrosion-resistant, high/low temperature metal-sheet parts, after molding and through Overheating Treatment
And precision optical machinery processing, surfaces externally and internally smooth (roughness be less than 0.2) and and regular shape (roundness deviation is less than 0.1),
Thickness uniformly (thickness deviation is less than 0.05), dimensional accuracy high (deviation is less than 0.1)；In -40 DEG C of low temperature to+120 DEG C of high temperature rings
Under border, uniform elastomeric deformable power can be provided, effectively limit the sliding scale of o type circle 4, prevent it from sealing nut simultaneously
Come off in 2 retaining groove 24.
Above-described embodiment is only used for illustrating the inventive concept of the present invention, rather than the restriction to rights protection of the present invention,
All changes that using this design, the present invention is carried out with unsubstantiality, all should fall into protection scope of the present invention.
Claims (2)
1. a kind of reciprocating valve element retaining sealing structure it is characterised in that: include valve core, sealing nut, valve rod, o type circle, cone
Shape elastic circlip, split washer, spring pad, spring；Sealing nut is threaded on valve core；Sealing nut upper surface is set to
Positioning plane, the axis of sealing nut offers through hole, be disposed adjacent close on the middle part inwall of through hole and from top to bottom
Envelope groove, retaining groove；O type circle is arranged in sealed groove, and cone shaped elastic jump ring is fixed in retaining groove；Split washer is solid
It is scheduled on valve rod, the valve rod positioned at split washer upper part penetrates sealing nut by through hole lower end, and sequentially passes through Conical Projectile
Property jump ring, o type circle, finally pass to sealing nut from through hole upper end；Spring pad and spring are then from top to bottom arranged on successively
On the lower sections of valve rod of split washer；
Described cone shaped elastic jump ring is provided with stationary plane, seal face, inner conical face, retaining mating surface and several crack arrest groove, crack arrest
Groove is evenly distributed in retaining mating surface；
The bottom of described retaining groove is provided with retaining locating surface, and the cooperation holding of retaining mating surface is on retaining locating surface.
2. as claimed in claim 1 reciprocating valve element retaining sealing structure it is characterised in that: described crack arrest groove offers four altogether
Individual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410402921.0A CN104180065B (en) | 2014-08-15 | 2014-08-15 | Reciprocating-type valve core non-return sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410402921.0A CN104180065B (en) | 2014-08-15 | 2014-08-15 | Reciprocating-type valve core non-return sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104180065A CN104180065A (en) | 2014-12-03 |
| CN104180065B true CN104180065B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410402921.0A Active CN104180065B (en) | 2014-08-15 | 2014-08-15 | Reciprocating-type valve core non-return sealing structure |
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| Country | Link |
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| CN (1) | CN104180065B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10151606C1 (en) * | 2001-10-18 | 2002-10-17 | Skf Ab | Valve shaft seal has a stiffening ring to carry the seal, with a cylindrical section to center the valve spring and a radial end section for the spring support without damage from the sharp spring end |
| CN2699067Y (en) * | 2004-02-23 | 2005-05-11 | 诸暨市恒森冷热器材有限公司 | Electric valve |
| CN2890547Y (en) * | 2005-11-25 | 2007-04-18 | 孙炜 | Structure for preventing outward leakage of valve |
| CN201306517Y (en) * | 2008-12-09 | 2009-09-09 | 山东菲特自控阀门制造有限公司 | Valve rod sealing device |
| CN202812441U (en) * | 2012-06-20 | 2013-03-20 | 卓旦春 | Valve body and valve rod sealing structure |
| CN203286116U (en) * | 2013-05-22 | 2013-11-13 | 哈帝（中山）阀业有限公司 | Valve packing sealing device |
| CN204083482U (en) * | 2014-08-15 | 2015-01-07 | 浙江盾安阀门有限公司 | Reciprocating spool retaining sealing configuration |
-
2014
- 2014-08-15 CN CN201410402921.0A patent/CN104180065B/en active Active
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| Publication number | Publication date |
|---|---|
| CN104180065A (en) | 2014-12-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311800 Zhejiang city in Shaoxing Province town of Zhuji city shop industrial zone Zhejiang Dunan Valve Co. Ltd. Patentee after: ZHEJIANG DUNAN VALVE Co.,Ltd. Address before: 311800 Zhejiang city in Shaoxing Province town of Zhuji city shop industrial zone Zhejiang Dunan Valve Co. Ltd. Patentee before: ZHEJIANG DUNAN VALVE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 311800 Zhejiang city in Shaoxing Province town of Zhuji city shop Industrial Zone Patentee after: Zhejiang deai Intelligent Control Technology Co.,Ltd. Address before: 311800, Shaoxing City, Zhejiang province Zhuji Town Industrial Zone Zhejiang shield Valve Co., Ltd. Patentee before: ZHEJIANG DUNAN VALVE Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Reciprocating valve core non-return sealing structure Effective date of registration: 20211220 Granted publication date: 20170201 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang deai Intelligent Control Technology Co.,Ltd. Registration number: Y2021980015397 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230724 Granted publication date: 20170201 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co.,Ltd. Pledgor: Zhejiang deai Intelligent Control Technology Co.,Ltd. Registration number: Y2021980015397 |