CN203404430U - Axial-flow type vibration-free check valve - Google Patents
Axial-flow type vibration-free check valve Download PDFInfo
- Publication number
- CN203404430U CN203404430U CN201320523229.4U CN201320523229U CN203404430U CN 203404430 U CN203404430 U CN 203404430U CN 201320523229 U CN201320523229 U CN 201320523229U CN 203404430 U CN203404430 U CN 203404430U
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- valve
- piston
- axial
- check valve
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- 238000013016 damping Methods 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000000737 periodic effect Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model discloses an axial-flow type vibration-free check valve, and belongs to the technical field of valve manufacturing. The axial-flow type vibration-free check valve comprises a valve body, a valve element, a spring, a nut, a bush and a support. The bush is sleeved with the spring through the nut, a piston is arranged between the support and the bush, and the piston is fixed to the support through a screw; a damping hole is formed in the piston in the axial direction, and a one-way damping valve is arranged in the piston. The axial-flow type vibration-free check valve overcomes the defects of common lifting type check valves, swinging type check valves and butterfly check valves, and has the advantages of being capable of stably operating on undulatory flow pipelines and common fluid conveying pipes for a long time, free of vibration and noise, excellent in sealing performance (zero-leakage), suitable for various pipeline systems with periodic fluctuation of flow and pressure, such as outlet pipelines of various pressurizers, reciprocating compressors and pumps, and also suitable for vacuum pipelines and other fluid conveying pipelines.
Description
Technical field
The utility model relates to a kind of valve, and especially safety check, belongs to technical field of valve manufacturing.
Background technique
What at present, existing various undulatory flow pipeline was used is all common Lift check valve or Swing check valve butterfly shaped check valve.Because the medium parameter in pipeline (flow, pressure) is that high frequency is periodically variable, and the spool of above type safety check is unrestricted, its position will change along with the change of fluid parameter, the spool that is presented as Lift check valve pumps fast, the flap of Swing check valve and butterfly shaped check valve is round bearing pin fast toward physical pendulum, thereby cause the Fast Wearing of vibration, noise and valve opening and closing element kinematic pair, sealing pair, because periodically clashing into and damage, loses sealability.The life-span of valve is very low, has to often change.
Model utility content
For the problems referred to above, the utility model provides a kind of novel axial flow shock-proof check valve.
The utility model solves the technological scheme that its technical problem adopts: axial flow shock-proof check valve, comprise valve body, spool, spring, nut, lining and support, spring on lining, is provided with piston between support and lining through nut sleeve, and piston is fixed on support by screw; Piston axially have a damping hole, in piston, be provided with one-way damper valve.
Spool, piston, lining and one-way damper valve form damping cavity jointly, and damping cavity is communicated with valve flowing channel by one-way damper valve and damping hole.
The beneficial effects of the utility model are, overcome the shortcoming of common Lift check valve, Swing check valve and butterfly shaped check valve, can be on undulatory flow pipeline and general fluid conveyance conduit for a long time, stably operation, friction and noise, sealability good (zero leakage).The pipe-line system that is applicable to various flows, pressure cycle fluctuation, as various pressurized machines, reciprocal compressor, delivery side of pump pipeline etc., this valve is suitable for vacuum pipeline and other fluid feed line equally.
Accompanying drawing explanation
Fig. 1 is the utility model general structure (valve closing state) schematic diagram;
Fig. 2 is the utility model general structure (valve opening state) schematic diagram.
Component and numbering in figure:
1-valve body, 2-seal ring, 3-spool, 4-spring, 5-nut,
6-lining, 7-orifice valve, 8-piston, 9-support, 10-screw.
Embodiment
Below in conjunction with embodiment, the utility model is further illustrated.
Referring to Fig. 1,2, axial flow shock-proof check valve, comprises valve body 1, spool 3, spring 4, nut 5, lining 6 and support 9, and spring 4 is enclosed within on lining 6 through nut 5, between support 9 and lining 6, is provided with piston 8, and piston 8 is fixed on support 9 by screw 10; Piston 8 axially have a damping hole D, in piston 8, be provided with one-way damper valve 7.
On spool 3, be embedded with seal ring 2.By the accurate cooperation of valve body 1, spool 3 and seal ring 2, control the decrement of seal ring, to meet the needs of different pressures grade.
This valve has following feature:
1) motion of spool 3 is subject to the restriction of damping cavity C and one-way damper valve 7, damping hole D, operates steadily.
2) speed of one-way damper valve 7 controllable valve core 3 side-to-side movements, thus unlatching, the closing velocity of valve affected.
3) by controlling the decrement of seal ring 2, make this valve be suitable for various pressure ratings, realize zero leakage.
Below in conjunction with accompanying drawing, working principle of the present utility model is described further:
When line pressure and flow velocity increase, spool moves right, and the damping cavity volume jointly consisting of spool, piston, lining and one-way damper valve increases, and pressure reduces, one-way damper valve is opened, and valve flowing channel medium enters damping cavity by one-way damper valve and damping hole.Damping hole makes media flow more even, and the aperture of one-way damper valve changes along with the variation of fluid parameter.Above process will make spool can move right very reposefully under various operating modes.
When line pressure and flow velocity reduction, spool is to left movement, the damping cavity volume jointly consisting of spool, piston, lining and one-way damper valve reduces, pressure increases, one-way damper valve is closed, and in damping cavity, medium can only be by entering valve flowing channel with damping hole, and this process makes being restricted to left movement of spool, and pressure in damping cavity and valve flowing channel tends to be balanced, damping hole makes media flow more even.Valve operates steadily.
One-way damper valve and damping hole make the medium between damping cavity and valve flowing channel carry out variable speed conversion, realized unbalanced damping, thereby reduced the harmful effect of undulatory flow to spool, speed and the amplitude (displacement) of spool invalid (being harmful to) motion have been reduced, the wearing and tearing of impact damage and the open-shut device kinematic pair of valve sealing face have been avoided to greatest extent, valve is operated steadily, eliminate vibration, noise.By changing the functions such as the parameter of one-way damper valve and damping hole can make valve realize to open soon, close slowly or open slowly, close soon.
When valve closing, seal ring is compressed, realizes sealing.By the accurate cooperation of spool and seal ring, control the decrement of seal ring, to meet the needs of various pressure ratings, guarantee good sealability, realize zero leakage.
Axial flow shock-proof check valve state description
As Fig. 1, when valve import A is during without pressure, spool is subject to the pressure of valve outlet port B and spring force and to left movement, valve closing, and seal ring is compressed, realizes zero leakage.
As Fig. 2, when valve import A has pressure, spool is subject to the pressure of valve import A, overcomes spring force and moves right valve opening.
Claims (2)
1. an axial flow shock-proof check valve, comprise valve body (1), spool (3), spring (4), nut (5), lining (6) and support (9), spring (4) is enclosed within on lining (6) through nut (5), it is characterized in that, between support (9) and lining (6), be provided with piston (8), piston (8) is fixed on support (9) by screw (10); Piston (8) axially have a damping hole (D), in piston (8), be provided with one-way damper valve (7).
2. axial flow shock-proof check valve according to claim 1, is characterized in that, is embedded with seal ring (2) on described spool (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320523229.4U CN203404430U (en) | 2013-08-26 | 2013-08-26 | Axial-flow type vibration-free check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320523229.4U CN203404430U (en) | 2013-08-26 | 2013-08-26 | Axial-flow type vibration-free check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203404430U true CN203404430U (en) | 2014-01-22 |
Family
ID=49940367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320523229.4U Expired - Lifetime CN203404430U (en) | 2013-08-26 | 2013-08-26 | Axial-flow type vibration-free check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203404430U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455586A (en) * | 2014-12-10 | 2015-03-25 | 四川固特阀门制造有限公司 | Check valve for online adjustment of opening-closing speed |
| WO2015192285A1 (en) * | 2014-06-16 | 2015-12-23 | 周耀周 | Method for improving performance of fluid processing system based on crystallization promoting medium |
| US10067092B2 (en) * | 2015-12-18 | 2018-09-04 | Mueller International, Llc | Noisemaker for pipe systems |
| US10267774B2 (en) | 2016-02-29 | 2019-04-23 | Mueller International, Llc | External noisemaker for pipe systems |
| US11609348B2 (en) | 2020-12-29 | 2023-03-21 | Mueller International, Llc | High-resolution acoustic pipe condition assessment using in-bracket pipe excitation |
| US11976747B2 (en) | 2019-03-20 | 2024-05-07 | Danfoss A/S | Compressor unit with a damped axial check valve for a discharge outlet |
| US12196714B2 (en) | 2021-07-19 | 2025-01-14 | Mueller International, Llc | Acoustic pipeline condition assessment at resolution down to pipe stick |
| CN120466451A (en) * | 2025-07-09 | 2025-08-12 | 中煤天津设计工程有限责任公司 | A low-resistance slow-closing one-way valve for pressure coupling device |
-
2013
- 2013-08-26 CN CN201320523229.4U patent/CN203404430U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10427960B2 (en) | 2014-06-16 | 2019-10-01 | Yiu Chau Chau | Method for improving performance of fluid processing system based on crystallization promoting medium |
| WO2015192285A1 (en) * | 2014-06-16 | 2015-12-23 | 周耀周 | Method for improving performance of fluid processing system based on crystallization promoting medium |
| CN105636908A (en) * | 2014-06-16 | 2016-06-01 | 周耀周 | Method for improving performance of fluid treatment system based on crystallization promoting medium |
| CN105636908B (en) * | 2014-06-16 | 2020-09-11 | 周耀周 | Methods of improving the performance of fluid handling systems based on crystallization promoting media |
| CN104455586A (en) * | 2014-12-10 | 2015-03-25 | 四川固特阀门制造有限公司 | Check valve for online adjustment of opening-closing speed |
| US10067092B2 (en) * | 2015-12-18 | 2018-09-04 | Mueller International, Llc | Noisemaker for pipe systems |
| US10845340B2 (en) | 2015-12-18 | 2020-11-24 | Mueller International, Llc | Noisemaker for pipe systems |
| US10267774B2 (en) | 2016-02-29 | 2019-04-23 | Mueller International, Llc | External noisemaker for pipe systems |
| US11976747B2 (en) | 2019-03-20 | 2024-05-07 | Danfoss A/S | Compressor unit with a damped axial check valve for a discharge outlet |
| US12467555B2 (en) | 2019-03-20 | 2025-11-11 | Danfoss A/S | Check valve damping |
| US11609348B2 (en) | 2020-12-29 | 2023-03-21 | Mueller International, Llc | High-resolution acoustic pipe condition assessment using in-bracket pipe excitation |
| US12196714B2 (en) | 2021-07-19 | 2025-01-14 | Mueller International, Llc | Acoustic pipeline condition assessment at resolution down to pipe stick |
| CN120466451A (en) * | 2025-07-09 | 2025-08-12 | 中煤天津设计工程有限责任公司 | A low-resistance slow-closing one-way valve for pressure coupling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |
|
| CX01 | Expiry of patent term |