CN201462066U - Check valve with elastic membrane - Google Patents
Check valve with elastic membrane Download PDFInfo
- Publication number
- CN201462066U CN201462066U CN2009201105397U CN200920110539U CN201462066U CN 201462066 U CN201462066 U CN 201462066U CN 2009201105397 U CN2009201105397 U CN 2009201105397U CN 200920110539 U CN200920110539 U CN 200920110539U CN 201462066 U CN201462066 U CN 201462066U
- Authority
- CN
- China
- Prior art keywords
- shell
- suction tude
- gas intake
- external diameter
- intake pipe
- 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
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- Safety Valves (AREA)
Abstract
The utility model relates to a check valve with elastic membranes. The check valve comprises a gas intake pipe, a shell and elastic membranes, wherein the shell is a circular tube-shaped metal shell, the inner wall on the left end of the shell is provided with a section of screw thread; the gas intake pipe is also a circular metal structure, the center of the gas intake pipe along the axial direction is provided with a blind hole, the circumference of the gas intake pipe is provided with one or more of rows of vent through-holes which are distributed evenly along the axial direction, each row of the vent through-holes comprises two or more of vent holes, the vent holes penetrate the inner and outer walls of the gas intake pipe, the excircle of the vent hole section of the gas intake pipe is smaller than that of the two ends, the left end of the excircle of the gas intake pipe is provided with an outer screw thread, the diameter of the right end of the gas intake pipe is in clearance fit with the inner diameter of the shell; the elastic membranes are sleeved on the excircles of each row of the vent through-holes of the gas intake pip, and the gas intake pipe is fixedly connected with the inside of the shell through a screw thread. By using the utility model, the gas loop can be cut off by means of the elastic membranes when tempering is generated so that the detonation phenomenon of flame in the cavity of the shell can be prevented and the safety of equipment can be effectively ensured.
Description
Technical field
The utility model relates to a kind of one-way valve, relates in particular to a kind of one-way valve with the elastic force film, belongs to mechanical structure field.
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.
The model utility content
The utility model provides a kind of one-way valve with the elastic force film, and is 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 utility model, 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 utility model
Wherein: 1-suction tude, 2-shell, 3-elastic force film, 4-go out vent hole
Embodiment
Below in conjunction with accompanying drawing the utility model is described further
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. the 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 |
|---|---|---|---|
| CN2009201105397U CN201462066U (en) | 2009-07-27 | 2009-07-27 | Check valve with elastic membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105397U CN201462066U (en) | 2009-07-27 | 2009-07-27 | Check valve with elastic membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201462066U true CN201462066U (en) | 2010-05-12 |
Family
ID=42389419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201105397U Expired - Fee Related CN201462066U (en) | 2009-07-27 | 2009-07-27 | Check valve with elastic membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201462066U (en) |
-
2009
- 2009-07-27 CN CN2009201105397U patent/CN201462066U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING HEHUA ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING HEHUA ANJI ELECTRONIC TECHNOLOGY INSTITUTE Effective date: 20140109 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100097 HAIDIAN, BEIJING TO: 211505 NANJING, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140109 Address after: 211505 Jiangsu city of Nanjing Province along the Yangtze River Industrial Development Zone Branch Road No. 9 building C5 Patentee after: Nanjing crane Energy Technology Co., Ltd. Address before: 100097 Beijing city Haidian District Xu Zhuang No. 45 green apartment office room C3-C9 building C Patentee before: Beijing Hehua Anji Electric Technology Institute |
|
| 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: 20100512 Termination date: 20160727 |