CN204239823U - A kind of one-way valve - Google Patents
A kind of one-way valve Download PDFInfo
- Publication number
- CN204239823U CN204239823U CN201420651836.3U CN201420651836U CN204239823U CN 204239823 U CN204239823 U CN 204239823U CN 201420651836 U CN201420651836 U CN 201420651836U CN 204239823 U CN204239823 U CN 204239823U
- Authority
- CN
- China
- Prior art keywords
- valve
- compression leg
- valve body
- sealing
- way valve
- 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.)
- Expired - Fee Related
Links
Landscapes
- Lift Valve (AREA)
- Safety Valves (AREA)
- Details Of Valves (AREA)
Abstract
The utility model provides a kind of one-way valve, and described one-way valve comprises: valve body, sealing head, spring, valve gap, compression leg, sealing gasket; Valve body is provided with cone-shaped seal structure and gas-entered passageway, valve gap is provided with outlet passageway, sealing head, spring are placed in compression leg inside, scyewed joint is passed through between compression leg and valve body, compression leg and valve gap are Spielpassung, sealing gasket is provided with, the compacted peripheral edge portion being arranged on valve gap and valve body of sealing gasket between valve body and valve gap.One-way valve of the present utility model has the advantage of simple, the small and exquisite practicality of structure, oppositely good seal performance, is applicable to gas piping system.
Description
Technical field
The utility model relates to a kind of control valve unit, particularly relates 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 problems to be solved in the utility model is the deficiency overcoming above-mentioned one-way valve, 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, be applicable to the one-way valve in gas piping system.
Above-mentioned technical problem of the present utility model 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 utility model 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 utility model 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 utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
In Fig. 1, one-way valve of the present utility model, 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 (3)
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), compression leg (5) again with valve body (1) scyewed joint; 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, 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 |
|---|---|---|---|
| CN201420651836.3U CN204239823U (en) | 2014-11-05 | 2014-11-05 | A kind of one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420651836.3U CN204239823U (en) | 2014-11-05 | 2014-11-05 | A kind of one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204239823U true CN204239823U (en) | 2015-04-01 |
Family
ID=52769321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420651836.3U Expired - Fee Related CN204239823U (en) | 2014-11-05 | 2014-11-05 | A kind of one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204239823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315207A (en) * | 2014-11-05 | 2015-01-28 | 中国工程物理研究院总体工程研究所 | One-way valve |
| CN108744808A (en) * | 2018-07-20 | 2018-11-06 | 黄大淼 | A kind of washing generates the air cleaning unit of anion |
-
2014
- 2014-11-05 CN CN201420651836.3U patent/CN204239823U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315207A (en) * | 2014-11-05 | 2015-01-28 | 中国工程物理研究院总体工程研究所 | One-way valve |
| CN108744808A (en) * | 2018-07-20 | 2018-11-06 | 黄大淼 | A kind of washing generates the air cleaning unit of anion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204239823U (en) | A kind of one-way valve | |
| CN202674328U (en) | Bellows globe valve | |
| CN104315207A (en) | One-way valve | |
| US8297300B2 (en) | Anti-backflow vacuum breaker valve | |
| CN207064702U (en) | A kind of Subzero valve | |
| CN206246746U (en) | A kind of Pneumatic unidirectional controls valve | |
| CN104930214A (en) | Rapid installation type high pressure floating ball valve | |
| CN205244403U (en) | Two way seal control valve | |
| CN207502129U (en) | A kind of valve tightness detector | |
| CN104565458A (en) | Spherical non-rising-stem stop check valve | |
| CN204420225U (en) | A kind of safety check | |
| CN205260879U (en) | High temperature resistant non return stop valve | |
| CN204025719U (en) | Changable type valve seat construction | |
| MX2010000239A (en) | Fluid flow valve. | |
| CN204729687U (en) | Lifting check valve | |
| CN104075001A (en) | Adjustable ultrahigh pressure check valve | |
| CN203963111U (en) | A kind of steel ball-type shuttle valve | |
| CN206299828U (en) | Sealing structure of high-pressure ball valve | |
| CN202691115U (en) | Floating ball valve | |
| CN201129541Y (en) | Non-return and cut-off integrated valve | |
| CN206770712U (en) | A kind of butterfly valve | |
| CN202629156U (en) | Valve rod of ball valve for pipeline | |
| CN104048077B (en) | Oil control supertension check valve | |
| CN209540049U (en) | A kind of valve of regulating flow quantity | |
| CN204387416U (en) | The dark bar screw down nonreturn valve of sphere |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20191105 |