CN104315207A - One-way valve - Google Patents
One-way valve Download PDFInfo
- Publication number
- CN104315207A CN104315207A CN201410611962.0A CN201410611962A CN104315207A CN 104315207 A CN104315207 A CN 104315207A CN 201410611962 A CN201410611962 A CN 201410611962A CN 104315207 A CN104315207 A CN 104315207A
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing
- valve body
- way valve
- compression leg
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 48
- 230000006835 compression Effects 0.000 claims description 20
- 238000007906 compression Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 8
- 239000004809 Teflon Substances 0.000 claims description 7
- 229920006362 Teflon® Polymers 0.000 claims description 7
- 238000003801 milling Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/04—Check valves with guided rigid valve members shaped as balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention provides a one-way valve. The one-way valve comprises a valve body, a sealing head, a spring, a valve cover, a pressing column and a sealing pad, wherein a tapered sealing structure and an air inlet channel are designed on the valve body, an air outlet channel is disposed on the valve cover, the sealing head and the spring are disposed in the pressing column, the pressing column is in threaded connection with the valve body, the pressing column is in clearance fit with the valve cover, the sealing pad is mounted between the valve body and the valve cover, and the sealing pad is arranged on the outer edge portion of the valve cover and the valve body in a pressing mode. The one-way valve has the advantages that the structure is simple, small and exquisite, and practical, the reverse sealing performance is good, and the one-way valve is applicable to a gas pipeline system.
Description
Technical field
The present invention relates to a kind of control valve unit, particularly relate to a kind of one-way valve.
Background technique
One-way valve, also known as " safety check ", is mainly used in, on the pipeline of medium one-way flow, preventing the refluence of pipeline medium.Belong to self-acting valve class, its switching motion relies on the energy of medium itself to drive.Be widely used in the devices such as oil, chemical industry and electric heating boiler, prevent reverse flow of fluids, proterctive equipment safe operation.
At present, market upper check valve is divided into rise-fall type, rotary-open type, bivalve dish and axial flow type check valve etc. by structure.Lift check valve can be divided into straight-through runner, vertical structure, angle type flow passage three kinds.Swing check valve is divided into single-lobe formula, Double-disc type and multi-clove type.Butterfly check valve is straight-through type.The safety check application purpose of civil area is prevent from medium from flowing backwards to protect machinery mostly; also the auxiliary system that may be raised above main system pressure for pressure is had to provide the pipeline of supply; it is most that there is complex structure in product, Dimensions is bigger than normal, oppositely poorly sealed; be difficult to the problems such as maintenance, bring hidden danger to equipment safety operation.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency overcoming above-mentioned one-way valve, and design a kind of one-way valve, it is simple that it has structure, Dimensions is little, reverse good seal performance, flexible movements between parts, light and handy, have buffer function, automatic switchover noiseless, is applicable to the one-way valve in gas piping system.
Above-mentioned technical problem of the present invention has the one-way valve of following structure by providing a kind of and solve.This one-way valve comprises: valve body, sealing head, spring, valve gap, compression leg, sealing gasket.Described valve body have inner cone sealing configuration, the worm structure be connected with compression leg, gas-entered passageway; Described sealing head, spring are placed in compression leg inside, are Spielpassung between sealing head and compression leg, are scyewed joint between described compression leg and valve body; Described valve gap having outlet passageway, between affiliated valve body and valve gap, sealing gasket is set, being fixedly connected with by tightening screw.
Described sealing head head is hemispherical head structure, and afterbody is designed to cylindrical milling square structure, and material is the material of teflon, oxygen free copper or other material.
Described compression leg external surface is screw thread and light face composite structure, and is scyewed joint between valve body, and is Spielpassung between valve gap, and compression leg bottom has vent.
When working principle of the present invention is gas forward flow in gas piping, under upstream gas pressure effect, sealing head throws off valve body sealing surface, valve opening; During refluence, sealing head, under the acting in conjunction of acting force of the spring and gas return pressure, falls back on valve body sealing surface, produces certain seal pressure, valve closing.
The present invention's advantage compared with prior art:
1) physical dimension is little, can be applied to and require strict occasion to space layout.
2) structure is simple, is easy to integrated with associated component.
3) devise the teflon seal head with resistance to high temperature, this valve can use in high temperature environments.
4) have employed teflon seal head and Returnning spring, this valve, when oppositely ending, is active in one's movements, automatic cut-off, and noiseless.
5) sealing head arranges guide structure, teflon friction factor is extremely low simultaneously, and sealing head opening and closing is smooth and easy.
6) reverse good airproof performance, helium leak rate can reach 10
-6pam
3/ s magnitude, can be used for the occasion high to oppositely sealing leak rate requirement.
7) sealing head material can select teflon, oxygen free copper, and according to selecting, the material of sealing head is different, can adapt in the air-channel system of different pressures, different oppositely seal request.
Accompanying drawing explanation
Fig. 1 is one-way valve structures schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
In Fig. 1, one-way valve of the present invention, mainly comprises valve body 1, sealing head 2, spring 3, valve gap 4, compression leg 5, sealing gasket 6.Valve body 1 is inner cone sealing configuration, arranges sealing gasket 6 between valve body 1 and valve gap 4, is fixedly connected with by tightening screw.Sealing head 2 is cylindrical milling square structure, cylindrically play the guiding role, and guarantees that sealing head bulb part in unlatching, closing process is good with valve body taper-face contact, ensures sealing, sealing head 2 upper milling position raising gas circuit patency.Compression leg 5 external surface and valve body 1 mating part are worm structure, be Spielpassung with valve gap 4 mating part, during assembling, first spring 3 is loaded in compression leg 5, reinstall sealing head 2, compression leg 5 is screwed in valve body 1, is screwed onto lower end surface and contacts with valve body 1 respective face, there is provided the compression stroke that spring 3 is preset, sealing head 2 resets by spring force.Compression leg 5 bottom has vent.Valve body 1 arranges gas-entered passageway, valve gap 4 arranges outlet passageway.During work, gas pressure is greater than spring compression force, and sealing head departs from valve body sealing surface, and opening gas circuit, during cut-off, lays down inlet end pressure, and sealing head resets under spring force and atmospheric pressure effect, and produces certain distortion, reaches reverse sealing.In the present embodiment, sealing head material is teflon, and oppositely sealing leak rate can reach 10
-6pam
3/ s, oppositely seals helium leak rate (10 far above most one-way valve
-2pa.m
3/ s magnitude).Sealing head material can adopt oxygen free copper, and oppositely sealing leak rate can reach 10
-3pam
3/ s.
Claims (4)
1. an one-way valve, comprises valve body (1), sealing head (2), spring (3), valve gap (4), compression leg (5), sealing gasket (6); It is characterized in that: described valve body (1) has inner cone sealing configuration, the worm structure be connected with compression leg, gas-entered passageway, affiliated sealing head (2), spring (3) are positioned in compression leg (5), and compression leg (5) is threaded with valve body (1) again; Affiliated valve gap (4) is provided with outlet passageway; Valve body (1) and valve gap (4) arrange sealing gasket (6), are fixedly connected with by tightening screw.
2. one-way valve according to claim 1, it is characterized in that, described sealing head (2) head is hemispherical head structure, and afterbody is cylindrical milling square structure.
3. one-way valve according to claim 1 or 2, is characterized in that, described sealing head (2) material is teflon.
4. one-way valve according to claim 1, it is characterized in that, described compression leg (5) external surface is screw thread and light face composite structure, and compression leg bottom has vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611962.0A CN104315207A (en) | 2014-11-05 | 2014-11-05 | One-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611962.0A CN104315207A (en) | 2014-11-05 | 2014-11-05 | One-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104315207A true CN104315207A (en) | 2015-01-28 |
Family
ID=52370484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410611962.0A Pending CN104315207A (en) | 2014-11-05 | 2014-11-05 | One-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104315207A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312482A (en) * | 2020-02-21 | 2020-06-19 | 深圳供电局有限公司 | Transformer respirator system |
| CN111878677A (en) * | 2020-07-31 | 2020-11-03 | 北京环境特性研究所 | Target accurate positioning device of terahertz time-domain spectrum scattering characteristic measurement system |
| CN112908499A (en) * | 2021-01-21 | 2021-06-04 | 中广核工程有限公司 | Reactor core emergency water injection system and anti-backflow device thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3703114A1 (en) * | 1987-02-03 | 1988-08-11 | Hubert Skibowski | Ball-type nonreturn valve |
| US4893650A (en) * | 1988-09-12 | 1990-01-16 | Bill Chisholm | One way high pressure flow control fittings |
| CN2351632Y (en) * | 1998-06-12 | 1999-12-01 | 胜利石油管理局桩西采油厂 | PTEF (Polytetrafluoroethylene) spool type single-flow valve |
| EP1101984A2 (en) * | 1999-11-22 | 2001-05-23 | STEIN, Günter | Check valve |
| CN1464214A (en) * | 2002-06-20 | 2003-12-31 | 李健 | Check valve capable of conveniently cleaning sealing surface |
| EP1712821A1 (en) * | 2004-02-04 | 2006-10-18 | Kosmek Ltd. | Flow control valve and cylinder device with flow control valve |
| CN201628032U (en) * | 2010-03-28 | 2010-11-10 | 董玉芬 | One-way non-return pipe joint |
| CN102537567A (en) * | 2010-12-16 | 2012-07-04 | 陕西四菱电子有限责任公司 | Single-way air channel connector |
| CN203477471U (en) * | 2013-08-09 | 2014-03-12 | 徐大庆 | Safety valve dismantling check device |
| CN204239823U (en) * | 2014-11-05 | 2015-04-01 | 中国工程物理研究院总体工程研究所 | A kind of one-way valve |
-
2014
- 2014-11-05 CN CN201410611962.0A patent/CN104315207A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3703114A1 (en) * | 1987-02-03 | 1988-08-11 | Hubert Skibowski | Ball-type nonreturn valve |
| US4893650A (en) * | 1988-09-12 | 1990-01-16 | Bill Chisholm | One way high pressure flow control fittings |
| CN2351632Y (en) * | 1998-06-12 | 1999-12-01 | 胜利石油管理局桩西采油厂 | PTEF (Polytetrafluoroethylene) spool type single-flow valve |
| EP1101984A2 (en) * | 1999-11-22 | 2001-05-23 | STEIN, Günter | Check valve |
| CN1464214A (en) * | 2002-06-20 | 2003-12-31 | 李健 | Check valve capable of conveniently cleaning sealing surface |
| EP1712821A1 (en) * | 2004-02-04 | 2006-10-18 | Kosmek Ltd. | Flow control valve and cylinder device with flow control valve |
| CN201628032U (en) * | 2010-03-28 | 2010-11-10 | 董玉芬 | One-way non-return pipe joint |
| CN102537567A (en) * | 2010-12-16 | 2012-07-04 | 陕西四菱电子有限责任公司 | Single-way air channel connector |
| CN203477471U (en) * | 2013-08-09 | 2014-03-12 | 徐大庆 | Safety valve dismantling check device |
| CN204239823U (en) * | 2014-11-05 | 2015-04-01 | 中国工程物理研究院总体工程研究所 | A kind of one-way valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312482A (en) * | 2020-02-21 | 2020-06-19 | 深圳供电局有限公司 | Transformer respirator system |
| CN111312482B (en) * | 2020-02-21 | 2021-12-31 | 深圳供电局有限公司 | Transformer respirator system |
| CN111878677A (en) * | 2020-07-31 | 2020-11-03 | 北京环境特性研究所 | Target accurate positioning device of terahertz time-domain spectrum scattering characteristic measurement system |
| CN111878677B (en) * | 2020-07-31 | 2022-04-01 | 北京环境特性研究所 | Target accurate positioning device of terahertz time-domain spectrum scattering characteristic measurement system |
| CN112908499A (en) * | 2021-01-21 | 2021-06-04 | 中广核工程有限公司 | Reactor core emergency water injection system and anti-backflow device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9097352B2 (en) | Relief valve for overload protection | |
| CN202674328U (en) | Bellows globe valve | |
| CN106499851A (en) | A kind of all-metal sealing pilot operated safety valve | |
| CN104315207A (en) | One-way valve | |
| MX2010000239A (en) | Fluid flow valve. | |
| CN204239823U (en) | A kind of one-way valve | |
| CN202007896U (en) | Ball stop valve | |
| US20120006422A1 (en) | Anti-backflow vacuum breaker valve | |
| CN216382650U (en) | A valve with good sealing | |
| CN204300440U (en) | Super-pressure hydraulic control check valve | |
| CN104565458A (en) | Spherical non-rising-stem stop check valve | |
| CN204328079U (en) | The sensitive pressure release disconnect of a kind of high pressure | |
| CN205260879U (en) | High temperature resistant non return stop valve | |
| CN107883039B (en) | Gas equipment | |
| CN205078288U (en) | A spool assembly of a side guard bidirectional lock | |
| CN202691115U (en) | Floating ball valve | |
| CN102691804A (en) | Ball stop valve | |
| CN204176055U (en) | A kind of axial flow gas control balance stop valve | |
| CN101201130B (en) | A valve structure capable of bidirectional automatic control | |
| CN202048231U (en) | Hemispherical valve with anti-leakage mechanism | |
| CN104048077B (en) | Oil control supertension check valve | |
| CN206918302U (en) | Flange connects spiral valve | |
| CN206299828U (en) | Sealing structure of high-pressure ball valve | |
| CN111963733A (en) | Double-sealing combined valve | |
| CN204153373U (en) | A kind of fluid path disconnect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |
|
| WD01 | Invention patent application deemed withdrawn after publication |