CN201455489U - Combined elastic film pressure-release anti-backfire device - Google Patents
Combined elastic film pressure-release anti-backfire device Download PDFInfo
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- CN201455489U CN201455489U CN2009201105414U CN200920110541U CN201455489U CN 201455489 U CN201455489 U CN 201455489U CN 2009201105414 U CN2009201105414 U CN 2009201105414U CN 200920110541 U CN200920110541 U CN 200920110541U CN 201455489 U CN201455489 U CN 201455489U
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- air inlet
- inlet pipe
- shell
- relief valve
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Abstract
The utility model provides a combined elastic film pressure-release anti-backfire device comprising an air inlet pipe, an outer shell, an elastic film, a fire stopping pipe, a connecting piece, a gasket, a pressure release valve outer shell and an elastic film pressure-release valve, wherein the fire stopping pipe is fixedly connected with the connecting piece, the connecting piece and the fire stopping pipe are arranged on the end surface of a step hole in the outer shell in a abutting mode by the gasket of the air inlet pipe , the elastic film is sleeved on each row of air outlets of the air inlet pipe, the air inlet pipe is fixedly connected with the inside of the outer shell by screw threads, the elastic film pressure-release valve is arranged at the upper end of a through hole in the vertical direction of the outer shell by screw threads, and the pressure release valve outer shell is fixedly connected and matched with outside threads of a through hole in the vertical direction of the outer shell by screw threads. When a backfire phenomenon generates, flame enters an inner cavity is stopped or extinguished by the fire stopping pipe, and an air loop is cut by the elastic film; and when the pressure of the inner cavity of the fire stopping pipe rises to a scheduled safe value, the elastic film pressure-release valve can carry out protective pressure release, thereby effectively ensuring the safety of the device and preventing the damage of the device for the backfire phenomenon.
Description
Technical field
The utility model relates to a kind of backfire controller, relates in particular to a kind of combined elastic film pressure release anti-backfire device, 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; Existing a kind of elastic membrane type tempering preventing device with fire-stopping pipe can effectively block the loop of tempering gas and stop the detonation of flame at device interior, but device interior bad student's in the short time pressure can't be removed.
The utility model content
The utility model provides a kind of combined elastic film pressure release anti-backfire device, by adopting being used in combination of a kind of elastic force film, fire-stopping pipe and pressure relief, can stop flame to flow backwards reliably, thus and the safety of the pressure releasing assurance operating equipment that can in time burning be produced.
A kind of combined elastic film pressure release anti-backfire device, comprise air inlet pipe, shell, the elastic force film, fire-stopping pipe, connector, pad, relief valve shell and elastic force film relief valve, air inlet pipe 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, 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, and the plural vent hole that goes out is arranged on the air inlet tube wall on the BC of stage casing, 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; Shell is round tubular metal three-way pipe, inner have through hole along the horizontal axis direction, there is a step at through hole 2/3rds places, the through hole of left end is less than right-hand member, the through-hole wall of left end is processed with one section screw thread, on the stepped hole through hole vertical direction through hole is arranged, all be processed with one section screw thread on through hole upper end inwall and the cylindrical; Elastic force film pressure-relief valve structure profile is consistent with air inlet pipe, and the relief valve shell is circular tubbiness housing, and inwall is processed with screw thread, and the relief valve shell circumferentially has perforation and uniform steam vent; Its annexation is: fire-stopping pipe is fixedlyed connected with connector, and connector and fire-stopping pipe are conflicted by air inlet pipe dottle pin sheet and be installed on the stepped hole end face of enclosure; The elastic force Membrane cover is connected on the BC external diameter of stage casing, and air inlet pipe is conflicted and connected enclosure, and 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, and the right section of stage casing BC CD is arranged in the through hole of shell, the external diameter of right section CD and the internal diameter matched in clearance of shell; Elastic force film relief valve is installed in the through hole upper end on the shell vertical direction, and the relief valve shell is fixedlyed connected with shell vertical direction through hole.
When the gas from source of the gas arrives suction nozzle, when pressure reaches certain value the elastic force film is propped up, the through hole of vent hole on fire-stopping pipe and connector that go out on the gas inlet pipe enters solder cutting gun and lights work, 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 and goes out vent hole and be adjacent to and block gas return path prior to flame; Because inside cavity can produce the pressure of moment, when pressure surpasses certain limit, the elastic force film on the elastic force film relief valve will be backed down under pressure, and pressed gas will be arranged to the outside by pore on the elastic force film relief valve and the steam vent on the relief valve shell.
Beneficial effect: tempering phenomenon can be when taking place in the utility model, by fire-stopping pipe blocking-up or extinguish the flame that enters inner chamber, pressure wave enters the fire-stopping pipe inner chamber prior to the flame of detonation simultaneously, the rising of fire-stopping pipe chamber pressure causes the elastic force film to play a role and blocks gas return path, elastic force film relief valve will carry out the protectiveness pressure release when fire-stopping pipe chamber pressure was elevated to setting ground safety value, discharged the high pressure that tempering produces; Thereby effectively guarantee the security of equipment and prevent the infringement of tempering phenomenon equipment.
Description of drawings
Fig. 1 is the structural representation of a kind of combined elastic film pressure release anti-backfire device of the utility model
Wherein: 1-air inlet pipe, 2-fire-stopping pipe, 3-shell, 4-relief valve shell, 5-elastic force film relief valve, 6-connector, 7-pad
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further
As shown in Figure 1, a kind of combined elastic film pressure release anti-backfire device, comprise air inlet pipe 1, shell 3, the elastic force film, fire-stopping pipe 2, connector 6, pad 7, relief valve shell 4 and elastic force film relief valve 5, wherein air inlet pipe 1 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 the external diameter of right section CD, and the external diameter of right-hand member CD is greater than the external diameter of stage casing BC and less than the aperture of shell, the air inlet pipe 1 on the BC of stage casing circumferentially along axis 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 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; Shell 3 is round tubular metal three-way pipe, inner have through hole along the horizontal axis direction, there is a step at through hole 2/3rds places, the through hole of left end is less than right-hand member, the through-hole wall of left end is processed with one section screw thread, on the stepped hole through hole vertical direction through hole is arranged, all be processed with one section screw thread on through hole upper end inwall and the cylindrical; Elastic force film relief valve 5 construction profile are consistent with air inlet pipe 1, and relief valve shell 4 is circular tubbiness housing, and inwall is processed with screw thread, and relief valve shell 4 circumferentially has perforation and uniform steam vent; Its annexation is: fire-stopping pipe 2 is fixedlyed connected with connector 6, and connector 6 and fire-stopping pipe 2 are conflicted by air inlet pipe 1 dottle pin sheet 7 and be installed on the stepped hole end face of shell 3 inside; The elastic force Membrane cover is connected on the BC external diameter of stage casing, and air inlet pipe 1 is connected in shell 3 inside; Elastic force film relief valve 5 is installed in the through hole upper end on shell 3 vertical directions, and relief valve shell 4 is fixedlyed connected with shell 3 vertical direction through holes.
When the gas from source of the gas arrives suction nozzle, when pressure reaches certain value the elastic force film is propped up, gas is entered solder cutting gun and is lighted work by the through hole of vent hole on fire-stopping pipe 2 and connector 6 that go out on the air inlet pipe 1, 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 2 time, be blocked or extinguish, thereby the pressure that detonation simultaneously produces makes the elastic force film and goes out vent hole and be adjacent to and block gas return path prior to flame; Because inside cavity can produce the pressure of moment, when pressure surpasses certain limit, the elastic force film on the elastic force film relief valve will be backed down under pressure, and pressed gas will be arranged to the outside by pore on the elastic force film relief valve and the steam vent on the relief valve shell.
Claims (2)
1. combined elastic film pressure release anti-backfire device comprises air inlet pipe (1), shell (3), elastic force film, fire-stopping pipe (2), connector (6), pad (7), relief valve shell (4) and elastic force film relief valve (5); It is characterized in that: air inlet pipe (1) is the circular metal structure, and 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 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 (3), and 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; Shell (3) is round tubular metal three-way pipe, inner have through hole along the horizontal axis direction, there is a step at through hole 2/3rds places, the through hole of left end is less than right-hand member, the through-hole wall of left end is processed with one section screw thread, on the stepped hole through hole vertical direction through hole is arranged, all be processed with one section screw thread on through hole upper end inwall and the cylindrical; Elastic force film relief valve (5) construction profile is consistent with air inlet pipe (1), and relief valve shell (4) is circular tubbiness housing, and inwall is processed with screw thread, and relief valve shell (4) circumferentially has perforation and uniform steam vent; Its annexation is: fire-stopping pipe (2) is fixedlyed connected with connector (6), and connector (6) and fire-stopping pipe (2) are conflicted by air inlet pipe (1) dottle pin sheet (7) and be installed on the inner stepped hole end face of shell (3); The elastic force Membrane cover is connected on the BC external diameter of stage casing, air inlet pipe (1) is conflicted and is connected shell (3) inside, 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); Elastic force film relief valve (5) is installed in the through hole upper end on shell (3) vertical direction, and relief valve shell (4) is fixedlyed connected with shell (3) vertical direction through hole.
2. combined elastic film pressure release anti-backfire device as claimed in claim 1 is characterized in that: the venthole 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 pore number more than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105414U CN201455489U (en) | 2009-07-27 | 2009-07-27 | Combined elastic film pressure-release anti-backfire device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201105414U CN201455489U (en) | 2009-07-27 | 2009-07-27 | Combined elastic film pressure-release anti-backfire device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201455489U true CN201455489U (en) | 2010-05-12 |
Family
ID=42382841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201105414U Expired - Lifetime CN201455489U (en) | 2009-07-27 | 2009-07-27 | Combined elastic film pressure-release anti-backfire device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201455489U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954520A (en) * | 2010-08-31 | 2011-01-26 | 蒋海翔 | Multifunctional valve of welding gun |
| CN101614398B (en) * | 2009-07-27 | 2011-02-09 | 北京鹤华安吉电子技术研究所 | Combined elastic film pressure release anti-backfire device |
-
2009
- 2009-07-27 CN CN2009201105414U patent/CN201455489U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614398B (en) * | 2009-07-27 | 2011-02-09 | 北京鹤华安吉电子技术研究所 | Combined elastic film pressure release anti-backfire device |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090727 |