CN101625041A - One-way valve with elastic membrane - Google Patents
One-way valve with elastic membrane Download PDFInfo
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- CN101625041A CN101625041A CN200910090079A CN200910090079A CN101625041A CN 101625041 A CN101625041 A CN 101625041A CN 200910090079 A CN200910090079 A CN 200910090079A CN 200910090079 A CN200910090079 A CN 200910090079A CN 101625041 A CN101625041 A CN 101625041A
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- shell
- suction tude
- air inlet
- inlet pipe
- external diameter
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Abstract
The invention relates to a one-way valve with an elastic membrane, which comprises an air inlet pipe, an outer shell and the elastic membrane, wherein the outer shell is a circular pipe-shaped metal shell, and a section of threads is arranged on the inner wall of the left end of the outer shell; the air inlet pipe is also in a circular metal structure, and a blind hole is arranged in the center of the air inlet pipe along an axis; more than one row of uniformly distributed exhaust through holes is arranged at the circumference of the air inlet pipe along the direction of the axis; each row is provided with more than two exhaust holes; the exhaust holes penetrate through the inner wall and the outer wall of the air inlet pipe; the excircle of the exhaust hole section of the air inlet pipe is smaller than both ends; the left end of the excircle of the air inlet pipe is provided with external threads, and clearances of the diameter of the right end of the air inlet pipe and the internal diameter of the outer shell are matched; the elastic membrane is sleeved on the excircle of each row of exhaust through holes of the air inlet pipe, and the air inlet pipe is fixedly connected to the inner part of the outer shell by the threads. When a tempering phenomenon is generated, the elastic membrane plays a role in cutting off an air loop and preventing flame from generating a deflagrating phenomenon in an inner cavity of the outer shell, thereby effectively ensuring the safety of equipment.
Description
Technical field
The present invention relates to a kind of one-way valve, relate in particular to a kind of one-way valve, belong to mechanical structure field with the elastic force film.
Background technique
At present, generally used a kind of mechanical type backfire controller device when carrying out metal gas welding, cutting with flame, backfire controller generally is made up of one-way valve and fire-stopping pipe, flows back to the blast that gas source causes equipment in order to stop flame.Thereby the structure of the one-way valve in this backfire controller and principle are the explosive power that produces during by tempering to be promoted piston, spring, valve rod and closes suction port and block gas return path.But because tempering temperature is higher, easily make spring produce annealing in this device, lose elasticity, cause fault.If easier being corroded when meeting corrosive liquids or gas and lose spring function, thereby make the disabler of one-way valve.
Summary of the invention
The invention provides a kind of one-way valve with the elastic force film, good by adopting a kind of elastic performance, fast, stroke weak point of resetting, antifatigue, high temperature resistant, corrosion resistant adhesive film material, thus can stop flame to flow back to the safety of gas source assurance manipulator reliably.
A kind of one-way valve with the elastic force film comprises suction tude, shell and elastic force film, and wherein shell 2 is round tubular metal shell; Suction tude also is the circular metal structure, variation according to external diameter, as seen suction tude is divided into 4 stages, the section of stretching out EA, left side section AB, stage casing BC, right section CD, wherein the external diameter of left side section AB is greater than the external diameter of right section CD, and the external diameter of right section CD is greater than the external diameter of stage casing BC and less than the internal diameter of shell, suction tude on the BC of stage casing circumferentially has along axial direction and goes out vent hole more than two row, whenever listing the vent hole number is more than two, goes out the inside and outside wall that vent hole runs through suction tude, has blind hole on the suction tude axial direction, the length of this blind hole runs through left side section AB and stage casing BC, and the elastic force film is a Rubber membrane cover; Its annexation is: the section of the stretching out EA of suction tude is positioned at outside the shell, the left side section AB of suction tude, and the right section of stage casing BC CD is arranged in the through hole of shell, and wherein, the external diameter of left side section AB is conflicted with the internal diameter of shell and is connected the external diameter of right section CD and the internal diameter Spielpassung of shell; The elastic force Membrane cover is connected on the BC external diameter of stage casing, and in addition, the outer fix point of the right section of suction tude CD has default distance with the through hole outlet of shell.
When the gas from source of the gas arrives suction tude, gas was propped up the elastic force film by going out vent hole when pressure reached certain value, gas enters welding cutting torch and lights work by going out the gap of vent hole through suction tude right-hand member and shell, when in the working procedure in case when tempering takes place, elastic force film and air outlet hole are adjacent to block gas return path thereby flame enters pressure that the inner chamber detonation produces.
Beneficial effect: tempering phenomenon can be when taking place in the present invention, played a role by the elastic force film and block gas return path, prevents that flame from producing deflagration phenomenon in the chamber in the enclosure, thereby effectively guarantee the Security of equipment and prevent the infringement of tempering phenomenon to equipment.
Description of drawings
Fig. 1 is the structural representation of a kind of one-way valve with the elastic force film of the present invention
Wherein: 1-suction tude, 2-shell, 3-elastic force film, 4-go out vent hole
Embodiment
The present invention will be further described below in conjunction with accompanying drawing
As shown in Figure 1, a kind of one-way valve with the elastic force film comprises suction tude 1, shell 2 and elastic force film 3, and wherein shell 2 is round tubular metal shell, and shell left end inwall has one section internal thread from end face; Suction tude 1 also is the circular metal structure, variation according to external diameter, as seen suction tude 1 is divided into 4 stages, the section of stretching out EA, left side section AB, stage casing BC, right section CD, wherein, the external diameter of left side section AB is greater than the external diameter of right section CD, the external diameter CD of right section is greater than the external diameter of stage casing BC and less than the internal diameter of shell, the suction tude 1 on the BC of stage casing circumferentially along axial direction have four row uniform go out vent hole 4, whenever listing vent hole 4 numbers is three, go out the inside and outside wall that vent hole 4 runs through suction tude, have blind hole on suction tude 1 axial direction, the length of this blind hole runs through left side section AB and stage casing BC, and elastic force film 3 is a Rubber membrane cover; Its annexation is: the section of the stretching out EA of suction tude 1 is positioned at outside the shell 2, the left side section AB of suction tude 1, the right section of stage casing BC CD is arranged in the through hole of shell 2, wherein, the external diameter of left side section AB and the internal diameter of shell 2 are by being threaded the external diameter of right section CD and the internal diameter Spielpassung of shell 2; Elastic force film 3 is socketed on the BC external diameter of stage casing, and in addition, the outer fix point of suction tude 1 right section CD has default distance with the through hole outlet of shell 2.
When the gas from source of the gas arrives suction tude 1, when pressure reaches certain value gas is propped up elastic force film 3 by going out vent hole 4, gas enters welding cutting torch and lights work by going out the gap of vent hole 4 through suction tude 1 right-hand member and shell 2, when in the working procedure in case when tempering takes place, make the elastic force film and go out vent hole 4 and be adjacent to and block gas return path thereby flame enters pressure that the inner chamber detonation produces.
Claims (3)
1, a kind of one-way valve with the elastic force film comprises suction tude (1), shell (2) and elastic force film (3), it is characterized in that: shell (2) is round tubular metal shell; Suction tude (1) also is the circular metal structure, variation according to external diameter, as seen suction tude (1) is divided into 4 stages, the section of stretching out EA, left side section AB, stage casing BC, right section CD, wherein, the external diameter of left side section AB is greater than the external diameter of right section CD, and the external diameter of right section CD is greater than the external diameter of stage casing BC and less than the internal diameter of shell (2), the plural vent hole that goes out is arranged on the suction tude on the BC of stage casing (1) wall, have blind hole on the suction tude axial direction, the length of this blind hole runs through left side section AB and stage casing BC, and elastic force film (3) is a Rubber membrane cover; Its annexation is: the section of the stretching out EA of suction tude (1) is positioned at outside the shell (2), the left side section AB of suction tude (1), the right section of stage casing BC CD is arranged in the through hole of shell (2), wherein, the external diameter of left side section AB is conflicted with the internal diameter of shell (2) and is connected, and the external diameter of right section CD is connected cooperation with the internal diameter gap of shell (2); Elastic force film (3) is socketed on the BC external diameter of stage casing.
2, a kind of one-way valve with the elastic force film as claimed in claim 1 is characterized in that: the air outlet hole (4) on the suction tude (1) is arranged along suction tude (1) axial direction, and number is more than two row, whenever lists vent hole (4) number more than two.
3, a kind of one-way valve with the elastic force film as claimed in claim 1 is characterized in that: the outer fix point of suction tude (1) right-hand member CD has default distance with the outlet of the through hole of shell (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910090079A CN101625041A (en) | 2009-07-27 | 2009-07-27 | One-way valve with elastic membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910090079A CN101625041A (en) | 2009-07-27 | 2009-07-27 | One-way valve with elastic membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101625041A true CN101625041A (en) | 2010-01-13 |
Family
ID=41520980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910090079A Pending CN101625041A (en) | 2009-07-27 | 2009-07-27 | One-way valve with elastic membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101625041A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788175A (en) * | 2011-05-17 | 2012-11-21 | 陈才章 | One-way valve for designated water level buoyancy control switch |
| CN102966770A (en) * | 2012-11-22 | 2013-03-13 | 裕东（中山）机械工程有限公司 | Elastic rubber type check valve for multi-dust environment |
| CN106762509A (en) * | 2017-02-07 | 2017-05-31 | 筱净（上海）生物科技有限公司 | Liquid pump and liquid jettison system |
-
2009
- 2009-07-27 CN CN200910090079A patent/CN101625041A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788175A (en) * | 2011-05-17 | 2012-11-21 | 陈才章 | One-way valve for designated water level buoyancy control switch |
| CN102966770A (en) * | 2012-11-22 | 2013-03-13 | 裕东（中山）机械工程有限公司 | Elastic rubber type check valve for multi-dust environment |
| CN106762509A (en) * | 2017-02-07 | 2017-05-31 | 筱净（上海）生物科技有限公司 | Liquid pump and liquid jettison system |
| CN106762509B (en) * | 2017-02-07 | 2019-01-01 | 筱净（上海）生物科技有限公司 | Liquid pump and liquid jettison system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100113 |