CN201521968U - Elastic membrane type backfire preventer with fire stop tube - Google Patents
Elastic membrane type backfire preventer with fire stop tube Download PDFInfo
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- CN201521968U CN201521968U CN2009201105490U CN200920110549U CN201521968U CN 201521968 U CN201521968 U CN 201521968U CN 2009201105490 U CN2009201105490 U CN 2009201105490U CN 200920110549 U CN200920110549 U CN 200920110549U CN 201521968 U CN201521968 U CN 201521968U
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- air inlet
- shell
- inlet pipe
- hole
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Abstract
The utility model relates to an elastic membrane type backfire preventer with a fire stop tube, comprising an air inlet tube, a casing, an elastic membrane, a fire stop tube, a connecting piece and a gasket, wherein the casing is a circular tubular metal casing, and is internally provided with a stepped through hole; the air inlet tube is in a circular metal structure and is provided with a blind hole along the center of the axis, and the periphery thereof is provided with more than two rows of uniformly-distributed air outlet through holes along the direction of the axis; the fire stop tube is fixedly connected with the connecting piece; the connecting piece and the fire stop tube are butt-mounted on the end surface of the stepped hole in the casing by a spacer of the air inlet tube; and the elastic membrane is sheathed on the air outlet holes of each row of the air inlet tube, and the air inlet tube is fixedly connected with the internal part of the casing through threads. The fire stop tube of the elastic membrane type backfire preventer with a fire stop tube can block or extinguish flame entering an internal cavity when backfire occurs, and simultaneously, pressure wave enters the internal cavity of the casing before deflagrating flame, the pressure at the internal cavity of the casing rises to lead the elastic membrane to function to cut off the gas return, thereby effectively ensuring the safety of devices and preventing the damage of the backfire on the devices.
Description
Technical field
The utility model relates to a kind of backfire controller, relates in particular to a kind of elastic membrane type tempering preventing device with fire-stopping pipe, belongs to mechanical structure field.
Background technology
At present, generally used a kind of mechanical type backfire controller pressure relief device when carrying out metal gas welding, cutting, flowed back to the blast that gas source causes equipment to stop flame with flame.Thereby the structure of this backfire controller and principle are the explosive force that produces during by tempering to be promoted piston, spring, valve rod and closes air inlet and block gas return path.But because 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 temper device.
The utility model content
The utility model provides a kind of elastic membrane type tempering preventing device with fire-stopping pipe, by adopting a kind of elastic performance good, reset being used in combination of fast, stroke weak point, antifatigue, high temperature resistant, corrosion resistant adhesive film material and fire-stopping pipe, thus can stop flame to flow backwards reliably and be burned to the safety of gas source assurance operating equipment.
A kind of elastic membrane type tempering preventing device with fire-stopping pipe, comprise air inlet pipe, shell, elastic force film, fire-stopping pipe, connector and pad, wherein shell is round tubular metal shell, along the housing axis direction through hole is arranged, there is a step at 2/3rds places, through hole inside, and the through hole of left end is greater than right-hand member; Air inlet pipe also is the circular metal structure, variation according to external diameter, as seen air inlet pipe 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 of right section CD is greater than the external diameter of stage casing BC, the external diameter of right section CD is less than the aperture of shell, and the plural vent hole that goes out is arranged on the air inlet tube wall on the BC of stage casing, and the vent hole that goes out on the air inlet pipe is arranged along the air inlet pipe axis direction, number is more than two row, whenever lists the vent hole number more than two; Have blind hole on the air inlet pipe axis direction, the length of this blind hole runs through left side section AB and stage casing BC; The elastic force film is a Rubber membrane cover; Connector is the disc plastic member, and there is through hole at the center; Its annexation is: fire-stopping pipe is fixedlyed connected with connector, and the end face of connector is conflicted and is installed on the stepped hole end face of enclosure; Pad is installed in the left side of fire-stopping pipe, the elastic force Membrane cover is connected on the BC external diameter of stage casing, conflict with pad and be connected in the right side of air inlet pipe, the external diameter of left side section AB is conflicted with the internal diameter of shell and is connected, the section of the stretching out EA of air inlet pipe is positioned at outside the shell, the left side section AB of air inlet pipe, the right section of stage casing BC CD is arranged in the through hole of shell, and the external diameter of right section CD is connected cooperation with the internal diameter gap of shell; When the gas from source of the gas arrives air inlet pipe, when pressure reaches certain value the elastic force film is propped up, gas enters solder cutting gun along the through hole of gap on fire-stopping pipe and connector between air inlet pipe and the shell and lights work by going out vent hole, in a single day in when, tempering taking place in the course of work when, in a single day in when, tempering taking place in the course of work when, at first detonation and inwardly propelling rapidly in tube chamber of flame, by fire-stopping pipe the time, be blocked or extinguish, thereby the pressure that detonation simultaneously produces makes the elastic force film be adjacent to and block gas return path with going out vent hole prior to flame, thereby has effectively stoped the generation of equipment implosion.
Beneficial effect: the utility model can be when equipment generation tempering phenomenon, by fire-stopping pipe blocking-up or extinguish the flame that enters inner chamber, pressure wave enters shell inner cavity prior to the flame of detonation simultaneously, the rising of shell inner cavity pressure causes the elastic force film to play a role and blocks gas return path, thereby effectively guarantees 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 elastic membrane type tempering preventing device with fire-stopping pipe of the utility model
Wherein: 1-air inlet pipe, 2-fire-stopping pipe, 3-shell, 4-connector, 5-pad
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further
As shown in Figure 1, a kind of elastic membrane type tempering preventing device with fire-stopping pipe, comprise air inlet pipe 1, shell 3, elastic force film, fire-stopping pipe 2, connector 4 and pad 5, wherein shell 3 is round tubular metal shell, along shell 3 axis directions through hole is arranged, there is a step at 2/3rds places, through hole inside, and the through hole of left end is greater than right-hand member; Air inlet pipe 1 also is the circular metal structure, variation according to external diameter, as seen air inlet pipe 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 right section external diameter CD, the external diameter CD of right side section is greater than the external diameter of stage casing BC, and the external diameter of right section CD is less than the aperture of shell 3, and the air inlet pipe 1 on the BC of stage casing circumferentially has four to be listed as the uniform vent hole that goes out along axis direction, whenever listing the vent hole number is three, go out the inside and outside wall that vent hole runs through air inlet pipe, have blind hole on the air inlet pipe axis direction, the length of this blind hole runs through left side section AB and stage casing BC; The elastic force film is a Rubber membrane cover; Connector is the disc plastic member, and there is through hole at the center; Its annexation is: fire-stopping pipe 2 is fixedlyed connected with connector 4, and the end face of connector 4 is conflicted and is installed on the stepped hole end face of shell 3 inside; Pad 5 is installed in the left side of fire-stopping pipe 2, the elastic force Membrane cover is connected on the BC external diameter of stage casing, conflict with pad 5 and be connected in the right side of air inlet pipe 1, air inlet pipe 1 is connected by the screw thread of left end external screw thread and shell 3 left end inwalls, and the external diameter of right section CD is connected cooperation with the internal diameter gap of shell 3; When the gas from source of the gas arrives air inlet pipe 1, pressure reaches certain value gas and the elastic force film is propped up when going out vent hole, gas enters solder cutting gun along the through hole of gap on fire-stopping pipe 2 and connector 4 between air inlet pipe 1 and the shell 3 and lights work by going out vent hole, in a single day in when, tempering taking place in the course of work when, flame at first enters fire-stopping pipe inside, flame then can not pass through fire-stopping pipe 2, but thereby the pressure that fire-stopping pipe 2 inner chamber detonations produce makes the elastic force film be adjacent to and block gas return path with going out vent hole, thereby effectively stoped the generation of equipment implosion.
Claims (2)
1. be with the elastic membrane type tempering preventing device of fire-stopping pipe, comprise air inlet pipe (1), shell (3), elastic force film, fire-stopping pipe (2), connector (4) and pad (5), it is characterized in that: shell (3) is round tubular metal shell, along shell (3) axis direction through hole is arranged, there is a step at 2/3rds places, through hole inside, and the through hole of left end is greater than right-hand member; Air inlet pipe (1) also is the circular metal structure, according to the variation of external diameter, visible air inlet pipe (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 right section CD external diameter, the external diameter of right section CD is greater than the external diameter of stage casing BC and less than the aperture of shell, the plural vent hole that goes out is arranged on the air inlet pipe on the BC of stage casing (1) wall, have blind hole on the air inlet pipe axis direction, the length of this blind hole runs through left side section AB and stage casing BC; The elastic force film is a Rubber membrane cover; Connector is the disc plastic member, and there is through hole at the center; Its annexation is: fire-stopping pipe (2) is fixedlyed connected with connector (4), and the end face of connector (4) is conflicted and is installed on the inner stepped hole end face of shell (3); Pad (5) is installed in the left side of fire-stopping pipe (2), the elastic force Membrane cover is connected on the BC external diameter of stage casing, conflict with pad (5) and be connected in the right side of air inlet pipe (1), the external diameter of left side section AB is conflicted with the internal diameter of shell (3) and is connected, the section of the stretching out EA of air inlet pipe (1) is positioned at outside the shell (3), the left side section AB of air inlet pipe (1), the right section of stage casing BC CD is arranged in the through hole of shell (3), the external diameter of right section CD and the internal diameter matched in clearance of shell (3).
2. the elastic membrane type tempering preventing device of band fire-stopping pipe as claimed in claim 1 is characterized in that: the vent hole that goes out on the air inlet pipe (1) is arranged along air inlet pipe (1) axis direction, and number is more than two row, whenever lists the vent hole number more than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105490U CN201521968U (en) | 2009-07-27 | 2009-07-27 | Elastic membrane type backfire preventer with fire stop tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105490U CN201521968U (en) | 2009-07-27 | 2009-07-27 | Elastic membrane type backfire preventer with fire stop tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521968U true CN201521968U (en) | 2010-07-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201105490U Expired - Fee Related CN201521968U (en) | 2009-07-27 | 2009-07-27 | Elastic membrane type backfire preventer with fire stop tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521968U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954520A (en) * | 2010-08-31 | 2011-01-26 | 蒋海翔 | Multifunctional valve of welding gun |
| CN102777916A (en) * | 2012-08-29 | 2012-11-14 | 北京中气华辰新能源技术开发有限公司 | Tempering preventing device |
| CN116877985A (en) * | 2023-09-07 | 2023-10-13 | 张家港广大特材股份有限公司 | Solid melting furnace deflagration emergency current breaking device, anti-backfire method and solid melting furnace |
-
2009
- 2009-07-27 CN CN2009201105490U patent/CN201521968U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954520A (en) * | 2010-08-31 | 2011-01-26 | 蒋海翔 | Multifunctional valve of welding gun |
| CN101954520B (en) * | 2010-08-31 | 2012-07-25 | 蒋海翔 | Multifunctional valve of welding gun |
| CN102777916A (en) * | 2012-08-29 | 2012-11-14 | 北京中气华辰新能源技术开发有限公司 | Tempering preventing device |
| CN116877985A (en) * | 2023-09-07 | 2023-10-13 | 张家港广大特材股份有限公司 | Solid melting furnace deflagration emergency current breaking device, anti-backfire method and solid melting furnace |
| CN116877985B (en) * | 2023-09-07 | 2023-12-26 | 张家港广大特材股份有限公司 | Solid melting furnace deflagration emergency current breaking device, anti-backfire method and solid melting furnace |
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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: 20140110 |
|
| 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: 20140110 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 |
Granted publication date: 20100707 Termination date: 20160727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |