CN207971548U - The automatic fireproof tempering device of gas welding or gas cutting - Google Patents
The automatic fireproof tempering device of gas welding or gas cutting Download PDFInfo
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- CN207971548U CN207971548U CN201721691262.2U CN201721691262U CN207971548U CN 207971548 U CN207971548 U CN 207971548U CN 201721691262 U CN201721691262 U CN 201721691262U CN 207971548 U CN207971548 U CN 207971548U
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Abstract
The utility model provides the automatic fireproof tempering device of a kind of gas welding or gas cutting, including shell, one end of shell is provided with interface, the through-hole of one and orifice are provided in the axial direction on shell, piston is provided in through-hole, one end of piston is connect with the spring being fixed in through-hole, in the circumferentially arranged multiple air admission holes having with orifice in one end of shell, multiple air admission holes are also connect with through-hole, when spring extends naturally, piston closes one end of multiple air admission holes, compressed spring, piston moves, multiple air admission holes are connected to through-hole, the other end of shell is circumferentially provided with multiple thermocouples, multiple thermocouples all extend to outside shell, multiple thermocouples are correspondingly connected with to form closed circuit with multigroup coil respectively, the one end of piston far from interface is located in the region of multigroup coil enclosing.The utility model can be automatically prevented from tempering, avoid the generation of explosion accident；After flame-out, also it is avoided that due to forgetting closing oxygen or fuel gas valve and gas is caused to leak.
Description
Technical field
The utility model is related to the technical fields of the protective device of gas welding torch or cutter, more specifically, are related to one
The automatic fireproof tempering device of kind gas welding torch or cutter.
Background technology
Gas welding or gas cutting technology are widely used in the Industry and Construction of modernization, in field of steel structure, gas welding or
Gas cutting is even more to run through entire engineering always.And during gas welding or torch operation, there is hair in when " tempering ", " flame-out " phenomenon
It is raw.Gas welding tempering is in the operation welded, cut, and oxygen or fuel gas (such as acetylene gas) burn in the mixing chamber of weldering, cutting torch,
The phenomenon that sebific duct diffusion to conveying acetylene gas is fired.Tempering can seriously be such that weldering, cutting torch is burnt, or even thing of exploding can occur
Therefore.The reason of generating tempering is muzzle obstruction to occur either mixed airflow speed is less than flame velocity again or gaseous mixture
The ratio of oxygen or air is too big in body.Flame-out then be during gas welding or gas cutting, the nozzle fire of welding gun extinguishes, and combustible gas
Body is not turned off, and mixed gas is spread to surrounding, and meeting fire so as to cause human poisoning or mixed gas explodes.Therefore,
" tempering " or " flame-out ", there is great security risk, needs to develop corresponding device in gas welding or torch operation
Solve the problems, such as this.
Utility model content
In view of the above problems, the purpose of this utility model is to provide the automatic fireproof tempering device of a kind of gas welding or gas cutting, with
Solve the problems, such as that air pressure welding gun is easy to happen tempering or flame-out in gas welding or torch operation in the prior art.
To achieve the goals above, the utility model is realized by technical solution below：
The automatic fireproof tempering device of a kind of gas welding or gas cutting, including shell, one end of the shell be provided with welding gun into
Gas port matches the interface of connection, and the through-hole of one and the orifice are provided in the axial direction on the shell, is set in the through-hole
It is equipped with the piston that a diameter matches with through-hole internal diameter, the piston is close to one end of the interface and is fixed in the through-hole
Spring connection, be additionally provided with multiple air admission holes with the orifice, the multiple air admission hole in one end of the shell
The periphery of the through-hole and one end of the multiple air admission hole is circumferentially disposed to connect with the through-hole, the shell it is another
One end is circumferentially arranged to have multiple thermocouples and multigroup coil, one end of the multiple thermocouple to all extend to outside the shell,
The other end of the multiple thermocouple is correspondingly connected with to form closed circuit with multigroup coil respectively,
When the spring is in nature elongation state, the multiple air admission hole is connect by the piston with the through-hole
One end, which is closed, makes the multiple air admission hole be not connected to the through-hole,
When the automatic fireproof tempering device is connect with welding gun carries out gas welding or gas cutting, the spring, the piston are compressed
Moved to the interface direction so that one end for being connect with the through-hole of the multiple air admission hole be opened thus it is the multiple into
Stomata is connected to the through-hole.
Preferably, in the piston first connecting rod is provided between one end of the interface and the spring.
Preferably, a push-plate, one end of the push-plate and institute are additionally provided between the first connecting rod and the spring
First connecting rod is stated to be fixedly connected, the other end of the push-plate is fixedly connected with the spring, the other end diameter of the push-plate with
The internal diameter of the through-hole is corresponding.
Preferably, the one end of the piston far from the interface is provided with second connecting rod, the second connecting rod is located at
In the region that multigroup coil encloses, the second connecting rod is magnet.
Preferably, the second connecting rod is located on the center in the region that multigroup coil encloses.
Preferably, the interior spiral shell to match with the external screw thread on welding gun air inlet is provided on the inner peripheral surface of the interface
Line.
Preferably, one end in the interface close to the through-hole is provided with a sealing ring.
Preferably, when the spring is in nature elongation, the second connecting rod extend out to shell from the through-hole
The outer or described second connecting rod is concordant with the other end of the shell.
Compared with prior art, the utility model at least has the advantages that：The utility model passes through thermocouple
Pyroelectric effect generates magnetic field in coil, generates thrust to piston under the influence of a magnetic field, and then automatically open the oxygen of welding gun
With fuel gas air admission hole to be welded or be cut；And when occurring being tempered or stopping working, the pyroelectric effect of thermocouple
It disappears, to which magnetic field disappears, piston is set back in turn under the action of spring-return power by the oxygen and fuel gas of welding gun
Air admission hole is closed, and is prevented from being tempered and then preventing flame from firing burning sebific duct, is also avoided the generation of explosion accident；In addition it is putting out
After fire, also avoid forgetting to close oxygen container valve or fuel gas valve due to worker and caused by gas leak, it is flammable
Gas leakage, which can not only cause atmosphere pollution also, can meet fiery explode.
Description of the drawings
By reference to the description below in conjunction with attached drawing, and with the utility model is more fully understood, this reality
It will be more clearly understood and understood with novel other purposes and result.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the sectional view along A-A of Fig. 1；
Fig. 3 is the B-B direction sectional view of Fig. 1；
The structural schematic diagram in gas welding or torch operation of Fig. 4 the utility model embodiments.
Identical label indicates similar or corresponding feature or function in all the appended drawings.
Specific implementation mode
Specific embodiment of the utility model is described in detail below with reference to attached drawing.
As shown in Figure 1, Figure 2 and Fig. 3 jointly shown in, the utility model provides the automatic anti-backfire dress of a kind of gas welding or gas cutting
It sets, including shell 1, in the present embodiment, which is cylinder, shell 1 or other shapes, such as round estrade.Shell
There are one the interfaces 10 that connection is matched with welding gun air inlet for 1 one end setting.The interface 10 be shell 1 one end be arranged to
The groove of 1 sunken inside of shell.Certainly, the interface 10 or the outwardly extending cylinder being arranged in one end of shell 1.For side
Just interface 10 is connect with welding gun air inlet, be provided on the inner peripheral surface of interface 10 one section it is matched with welding gun air inlet interface external thread
Internal thread.In addition gas leakage in order to prevent is additionally provided with a rubber seal on 10 inner side end of interface.
A through-hole 11 is provided on the center of shell 1 in an axial direction, which is connected with interface 10.In through-hole 11
It is provided with the piston 2 that a diameter matches with 11 internal diameter of through-hole.One end of interface 10 is provided with a first connecting rod in piston 2
3, the spring 4 that first connecting rod 3 is fixed on one in through-hole 11 close to one end of interface 10 is connect.In order to enable first connecting rod 3 with
Spring 4 connects more secured, and a push-plate 5 is provided between first connecting rod 3 and spring 4.In the present embodiment, which is circle
Platform shape, i.e. push-plate 5 gradually increase with far from 3 its diameter of first connecting rod.It is furthermore preferred that one end that push-plate 5 is connect with spring 4
Diameter is corresponding to the internal diameter of through-hole 11.Multiple air admission holes 12 are additionally provided in one end of shell 1, multiple air admission holes 12 are circumferentially set
Set in the periphery of the through-hole, one end of multiple air admission holes is connected to interface 10, the other ends of multiple air admission holes 12 with it is logical
Hole 11 connects, and when spring 4 is in nature elongation state, the end seal that multiple air admission holes 12 are connect by piston 3 with through-hole 11
It closes, at this point, multiple air admission holes 12 are not connected to through-hole 11；Compressed spring 4, piston 3 move in through-hole 11 to 10 direction of interface
Dynamic, one end that multiple air admission holes 12 are connect with through-hole 11 is exposed, at this point, multiple air admission holes 12 are connected to through-hole 11.
There are multiple thermocouples 6, multiple thermocouples 6 to be arranged in the periphery of through-hole 11 the other end of shell 1 is circumferentially arranged,
Multiple thermocouples 6 all extend to outside shell 1.Each thermocouple 6 connect time for being formed and being closed by converter with one group of coil 7
Road.Every group of coil 7 is arranged in 6 corresponding shell 1 of thermocouple connected to it.And in piston 3 close to one end of thermocouple 6
It is provided with second connecting rod 8, second connecting rod 8 is magnet, and in the present embodiment, second connecting rod 8 is made of steel material.In order to enable
The magnetic force that coil 7 generates can be acted on preferably on second connecting rod 8, and it is outer or that shell 1 is extended in one end of second connecting rod 8
One end of two connecting rods 8 is concordant with the other end of shell 1, and second connecting rod 8 is located at the centre bit in the region that multigroup coil 7 encloses
It sets.
In the automatic fireproof tempering device of gas welding or gas cutting using the present embodiment, Fig. 4 is seen, by the oxygen air inlet of welding gun
It is threadably secured and connect with the interface 10 of the device, by the fuel gas air inlet of welding gun and connecing for another device
Mouth 10 is threadably secured connection.The thermocouple 6 of 1 other end of shell of two devices is connected with the pipette tips part of welding gun again
It connects.In pipette tips partial firing, the pyroelectric effect that each thermocouple 6 generates after igniting to generate in coil 7 connected to it
Electric current, electric current generate magnetic field in multigroup coil 7.Magnetic field generates thrust to the second connecting rod 8 of steel, and then pushes second connecting rod
8, piston 2, first connecting rod 3 and push-plate 5 to the movement of 10 direction of interface to compressed spring 4, when the compression of spring 4 to a certain extent,
Piston 2 is removed from multiple air admission holes 12 and 11 junction of through-hole, at this point, multiple air admission holes 12 are connected to through-hole 11, on welding gun
Oxygen and fuel gas entered in the mixing chamber of welding gun by the air admission hole 12 on two devices respectively.In gas welding or
In torch operation, the opening degree of oxygen valve can be adjusted according to the requirement of flame, is carried out with the flame of size needed for acquisition
Gas welding or gas cutting.After welding, fuel gas valve is first closed, oxygen valve is turned off.With the oxygen air inlet on welding gun
The thermocouple 6 on the device that mouth is connected with fuel gas air inlet cools down, and pyroelectric effect disappears, then the electricity in multigroup coil 7
Stream disappears, and the magnetic field that multigroup coil 7 generates also just disappears, and the thrust acted on therewith on second connecting rod 8 disappears, and is returned in spring 4
Under the action of multiple power, the push-plate 5 being connected with spring 4 pushes first connecting rod 3 and the piston 2 being connect with first connecting rod 3 in through-hole 11
In do movement close to 6 direction of thermocouple, after spring 4 is replied naturally, piston 2 is moved to through-hole 11 and the company of multiple air admission holes 12
One end closing of the place of connecing to connect multiple air admission holes 12 with through-hole 11, so that the oxygen intake pipe road of welding gun and flammable
Gas inlet pipeline is in closed state, it is therefore prevented that tempering, even if flame-out, oxygen or fuel gas will not loss, in this way
Welding gun is in dual fail-safe state, it is ensured that the safety of construction.
The automatic anti-backfire dress of gas welding according to the present utility model or gas cutting is described in an illustrative manner above with reference to attached drawing
It sets.It will be understood by those skilled in the art, however, that the gas welding or the automatic of gas cutting that are proposed for above-mentioned the utility model are prevented back
Fiery device can also make various improvement on the basis of not departing from the utility model content.Therefore, the protection of the utility model
Range should be determined by the content of appended claims.
Claims (8)
1. the automatic fireproof tempering device of a kind of gas welding or gas cutting, which is characterized in that including shell, one end of the shell is provided with
The interface of connection is matched with welding gun air inlet, and the through-hole of one and the orifice are provided in the axial direction on the shell, it is described
The piston that a diameter matches with through-hole internal diameter is provided in through-hole, the piston is close to one end of the interface and is fixed on institute
The spring connection in through-hole is stated, multiple air admission holes with the orifice are additionally provided in one end of the shell, it is described more
A air admission hole is circumferentially disposed at the periphery of the through-hole and one end of the multiple air admission hole and is connect with the through-hole, described
The other end of shell is circumferentially arranged a multiple thermocouples and multigroup coil, and one end of the multiple thermocouple all extends to described
Outside shell, the other end of the multiple thermocouple is correspondingly connected with to form closed circuit with multigroup coil respectively,
When the spring is in nature elongation state, one end that the multiple air admission hole is connect by the piston with the through-hole
Closing makes the multiple air admission hole be not connected to the through-hole,
When the automatic fireproof tempering device, which is connect with welding gun, carries out gas welding or gas cutting, the spring is compressed, the piston is to institute
Interface direction is stated to move so that one end that the multiple air admission hole is connect with the through-hole is opened to the multiple air admission hole
It is connected to the through-hole.
2. the automatic fireproof tempering device of gas welding as described in claim 1 or gas cutting, which is characterized in that in the piston close to institute
It states and is provided with first connecting rod between one end of interface and the spring.
3. the automatic fireproof tempering device of gas welding as claimed in claim 2 or gas cutting, which is characterized in that the first connecting rod and institute
State and be additionally provided with a push-plate between spring, one end of the push-plate is fixedly connected with the first connecting rod, the push-plate it is another
End is fixedly connected with the spring, and the other end diameter of the push-plate is corresponding to the internal diameter of the through-hole.
4. the automatic fireproof tempering device of gas welding as described in claim 1 or gas cutting, which is characterized in that in the piston far from institute
The one end for stating interface is provided with second connecting rod, and the second connecting rod is located in the region that multigroup coil encloses, and described second
Connecting rod is magnet.
5. the automatic fireproof tempering device of gas welding as claimed in claim 4 or gas cutting, which is characterized in that the second connecting rod is located at
On the center in the region that multigroup coil encloses.
6. the automatic fireproof tempering device of gas welding as described in claim 1 or gas cutting, which is characterized in that the inner periphery of the interface
The internal thread to match with the external screw thread on welding gun air inlet is provided on face.
7. the automatic fireproof tempering device of gas welding as described in claim 1 or gas cutting, which is characterized in that close to institute in the interface
The one end for stating through-hole is provided with a sealing ring.
8. the automatic fireproof tempering device of gas welding as claimed in claim 4 or gas cutting, which is characterized in that when the spring is in certainly
So when elongation, the second connecting rod extend out to from the through-hole outside shell or the second connecting rod and the shell it is another
Hold level with both hands neat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721691262.2U CN207971548U (en) | 2017-12-07 | 2017-12-07 | The automatic fireproof tempering device of gas welding or gas cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721691262.2U CN207971548U (en) | 2017-12-07 | 2017-12-07 | The automatic fireproof tempering device of gas welding or gas cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207971548U true CN207971548U (en) | 2018-10-16 |
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ID=63771281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721691262.2U Active CN207971548U (en) | 2017-12-07 | 2017-12-07 | The automatic fireproof tempering device of gas welding or gas cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207971548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931776A (en) * | 2017-12-07 | 2018-04-20 | 中冶交通建设集团有限公司 | Gas welding or the automatic fireproof tempering device of gas cutting |
-
2017
- 2017-12-07 CN CN201721691262.2U patent/CN207971548U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107931776A (en) * | 2017-12-07 | 2018-04-20 | 中冶交通建设集团有限公司 | Gas welding or the automatic fireproof tempering device of gas cutting |
| CN107931776B (en) * | 2017-12-07 | 2023-09-22 | 中冶交通建设集团有限公司 | Automatic backfire preventing device for gas welding or gas cutting |
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