CN103047650B - Novel anti-backfire cutting and welding torch - Google Patents
Novel anti-backfire cutting and welding torch Download PDFInfo
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- CN103047650B CN103047650B CN201210571762.8A CN201210571762A CN103047650B CN 103047650 B CN103047650 B CN 103047650B CN 201210571762 A CN201210571762 A CN 201210571762A CN 103047650 B CN103047650 B CN 103047650B
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Abstract
The invention relates to a novel anti-backfire cutting and welding torch and belongs to the field of machinery. A traditional cutting and welding torch is poor in anti-backfire effect and has potential safety hazard in operation. A preheating oxygen pipe is arranged in an existing gas pipe, a fire-retardant section is arranged in the middle of the preheating oxygen pipe, the inner diameter of the fire-retardant section is smaller than that of each of two ends of the preheating oxygen pipe, the fire-retardant section wall is provided with a through hole, an oxygen guide pipe is arranged in a handle, oxygen passes through an oxygen valve, the oxygen guide pipe, a cutting oxygen adjusting valve and an oxygen pipe to enter a cutting nozzle, preheated oxygen passes through the oxygen valve, the oxygen guide pipe, a middle body and a preheating oxygen pipe to enter the cutting nozzle, and gas passes through a gas valve, the handle, a gas adjusting valve and the gas pipe to enter the preheating oxygen pipe. By the aid of the structure, the novel anti-backfire cutting and welding torch is simplified and attractive in appearance, portable to use, stable in anti-backfire function, obvious in action and capable of guaranteeing operational safety multi-directionally.
Description
Technical field
The invention belongs to mechanical field, relate to welding and cutting device, be specifically related to a kind of novel anti-backfire welding torch.
Background technology
Welding is a kind of metal machining technique, need complete by welding and cutting device, jet absorption type welding torch is exactly one of capital equipment of commonly using of people, is generally made up of parts such as oxygen hose, mixture pipe, cutting oxygen valve, preheat oxygen control valve, oxygen valve, gas valve, handle, wireway, cutting torch, mid-section body and Rear body.Operation at ordinary times, gas flame burns outside cutting torch, when gas pressure is not enough, tip blocking, tip from weldment too close to or tip is overheated time, gas flame can enter reverse combustion in mouth, produce tempering phenomenon, if fire falls into spread to acetylene cylinder, accident of will blasting, therefore to possess function of preventing back-fire extremely important for welding torch.China Patent No. CN2614828Y discloses a kind of dry type flash back preventer, by metal shell, metal bar core, wire netting, regulate barrel, seal head, inlet suction port and air outlet adapter composition, to be loaded into after tightly volume has the wire netting of some layers on metal bar core in metal shell and to keep close contact with inner walls, vertical-horizontal network on wire netting and metal bar core, inner walls, regulate barrel, formed the together gas of seal head by, the special micro channel that also can be closed, though this type of fireproof tempering device has certain anti-backfire effect, but because assembling metal net is very loaded down with trivial details, and be wound around tension meeting mitigation of gases flow velocity, easily tempering all the better, be wrapped over pine and do not have again anti-backfire effect, the bad assurance of wire netting elasticity, for a long time with the rear slag ash that also can produce by blockage of the micro orifice, make its anti-backfire inefficiency, have in addition and stop tempering by install sintered part additional at cutting torch place, this type of welding torch increases the weight of own wt on the one hand, and anti-backfire efficiency is low on the other hand can't change cutting torch, also have by arrange fireproof tempering device in mid-section body bottom, this type of fireproof tempering device complex structure, inconvenient operation, not only increase the weight of welding torch weight, and when tempering is strile-backd, flame is easy to spread to mixture pipe, in mixture pipe, carry out Thorough combustion, gently quick-fried, flame is very likely crossed fireproof tempering device and is approached fuel gas source, and dangerous still exist.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of delicate structure, use light, that anti-backfire efficiency is high novel anti-backfire welding torch.
Object of the present invention realizes by following technical proposal: a kind of novel anti-backfire welding torch, comprises oxygen hose, Gas Pipe, cutting oxygen valve, gas control valve, oxygen valve, gas valve, handle and there is the cutting torch of air flue, mid-section body and Rear body, described cutting oxygen valve and gas control valve are all fixedly mounted in mid-section body, described Rear body one end connects oxygen valve and gas valve respectively, the other end is connected with mid-section body by handle, described cutting torch is connected described oxygen hose and Gas Pipe respectively with between mid-section body, it is characterized in that, preheat oxygen pipe is provided with in described Gas Pipe, back-fire relief section is provided with in the middle part of described preheat oxygen pipe, described back-fire relief section internal diameter is less than preheat oxygen pipe two ends internal diameter, and back-fire relief section wall offers through hole, be provided with wireway in described handle, oxygen is through oxygen valve, wireway, cutting oxygen valve, oxygen hose enters cutting torch, and preheat oxygen is through oxygen valve, wireway, mid-section body, preheat oxygen pipe enters cutting torch, and combustion gas is through gas valve, handle, gas control valve, Gas Pipe enters preheat oxygen pipe.Jet absorption type is in conjunction with the setting of back-fire relief section, simple and ingenious structure, tempering backdraft phenomenon is made to be convenient to soon manage interior elimination after by cutting torch, function of preventing back-fire is stable, effect is obvious, and overall construction design does not only change the welding torch profile of original classics, make handle portion more simplify on the contrary attractive in appearance, overall weight is also gently more original.
In above-mentioned one novel anti-backfire welding torch, described through hole at least one.
In above-mentioned one novel anti-backfire welding torch, described through-hole diameter is 1.3-1.5mm.Under this aperture, sufficient gas circulation can be ensured, anti-backfire effect can be played again.
In above-mentioned one novel anti-backfire welding torch, described back-fire relief section internal diameter is 1.3-1.5mm.Under this internal diameter, when tempering, this place narrows due to space, and flame just terminates to this, and gaseous mixture is compressed, and pressure increase is also better than ambient pressure, and gaseous mixture sprays to cutting torch under differential pressure.
In above-mentioned one novel anti-backfire welding torch, be positioned at mid-section body end in described preheat oxygen pipe to be provided with spiral base and one end and to be connected in spiral bar on spiral base, the described spiral bar other end is towards cutting torch, and described spiral base fixes on preheat oxygen inside pipe wall.After this design makes preheat oxygen enter preheat oxygen pipe, pressure is steady, also contributes to the generation eliminating tempering backdraft phenomenon.
In above-mentioned one novel anti-backfire welding torch, described gas control valve is positioned at the side of mid-section body.This structure is convenient to people under emergency case, and the very first time just easily can cut off combustion gas, thus improves operational security.
In above-mentioned one novel anti-backfire welding torch, between described gas valve and Rear body, be provided with check valve.The setting of check valve is intended to guarantee operational security.
Compared with prior art, after the present invention adopts said structure, profile is simplified attractive in appearance, uses light, function of preventing back-fire is stable, effect obviously, multi-facetedly guarantee operational security.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the present invention's gas channel schematic diagram when working.
In figure, 1, oxygen hose; 2, Gas Pipe; 3, oxygen valve is cut; 4, gas control valve; 5, oxygen valve; 6, gas valve; 7, handle; 8, cutting torch; 9, mid-section body; 10, Rear body; 11, check valve; 12, preheat oxygen pipe; 13, back-fire relief section; 14, through hole; 15, wireway; 16, mixed air vessel; 17, preheat oxygen room; 18, fuel chamber; 19, combustion gas road; 20, spiral base; 21, spiral bar.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, a kind of novel anti-backfire welding torch, comprise oxygen hose 1, Gas Pipe 2, cutting oxygen valve 3, gas control valve 4, oxygen valve 5, gas valve 6, handle 7 and there is the cutting torch 8 of air flue, mid-section body 9 and Rear body 10, cutting oxygen valve 3 is fixedly mounted on the top of mid-section body 9, gas control valve 4 is fixedly mounted on the side of mid-section body 9, Rear body 10 one end connects oxygen valve 5 and check valve 11 respectively, check valve 11 is connected with gas valve 6, Rear body 10 other end is connected with mid-section body 9 by handle 7, oxygen hose 1 and Gas Pipe 2 is connected respectively between cutting torch 8 with mid-section body 9, preheat oxygen pipe 12 is positioned at Gas Pipe 2, the back-fire relief section 13 that internal diameter is less than preheat oxygen pipe 12 two ends internal diameter is provided with in the middle part of preheat oxygen pipe 12, back-fire relief section 13 internal diameter is 1.3mm, and on back-fire relief section 13 wall, offer the through hole 14 that an aperture is 1.3mm, wireway 15 is positioned at handle 7.Overall construction design does not only change the welding torch profile of original classics, make 7, handle more simplify attractive in appearance on the contrary, overall weight is also gently more original, when emergency case, also be convenient to people and easily cut off combustion gas in the very first time, and guarantee this welding torch operational security from multi-faceted.
As shown in Figure 2, cutting torch 8 is leaded up to oxygen hose 1, cutting oxygen valve 3 and wireway 15 and is connected with oxygen valve 5, cutting torch 8 is separately leaded up to preheat oxygen pipe 12, mid-section body 9 and wireway 15 and is connected with oxygen valve 5, and Gas Pipe 2 is connected with gas valve 6 by gas control valve 4 and handle 7.Preheat oxygen pipe 12 is separated into the chamber of two intercommunications in left and right by back-fire relief section 13, be respectively mixed air vessel 16 and preheat oxygen room 17, preheat oxygen pipe 12 and Gas Pipe 2 gap-forming fuel chamber 18, wireway 15 and the combustion gas road 19 of handle 7 gap-forming for gas circulation, during preheating, close cutting oxygen valve 3, open gas control valve 4 and gas valve 6, combustion gas is through check valve 11, combustion gas road 19, gas control valve 4 enters fuel chamber 18, open oxygen valve 5 subsequently, oxygen enters the preheat oxygen room 17 of preheat oxygen pipe 12 through wireway 15, when oxygen is through back-fire relief section 13, adhesive is produced to combustion gas, combustion gas enters preheat oxygen pipe 12 by through hole 14 and enters mixed air vessel 16 with oxygen mix, gaseous mixture finally arrives cutting torch 8 spout, can to light a fire operation, when there is tempering and strile-bacing, flame enters cutting torch 8 and arrives mixed air vessel 16, because back-fire relief section 13 internal diameter reduces, space narrows, flame is obstructed to this extinguish immediately, mixed air vessel 16 becomes pressure differential with preheat oxygen room 17 row afterwards, preheat oxygen is through back-fire relief section 13 and adhesive combustion gas enters cutting torch 8, igniting just can continue operation, during cutting, cutting oxygen valve 3 is opened, oxygen is through wireway 15, cutting oxygen valve 3 and oxygen hose 1 enter cutting torch 8.Jet absorption type is in conjunction with the setting of back-fire relief section 13, and simple and ingenious structure, makes tempering backdraft phenomenon be convenient to soon manage interior elimination after by cutting torch 8, and function of preventing back-fire is stable, effect is obvious.
As depicted in figs. 1 and 2, in preheat oxygen pipe 12, be positioned at mid-section body 9 end be provided with spiral base 20 and one end and be connected in spiral bar 21 on spiral base 20, spiral bar 21 other end is towards cutting torch 8, and spiral base 20 fixes on preheat oxygen pipe 12 inwall.This design makes that preheat oxygen to enter after preheat oxygen pipe 12 in air flow collection, pressure is steady, also contributes to the generation eliminating tempering backdraft phenomenon.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (7)
1. an anti-backfire welding torch, comprises oxygen hose, Gas Pipe, cutting oxygen valve, gas control valve, oxygen valve, gas valve, handle and there is the cutting torch of air flue, mid-section body and Rear body, described cutting oxygen valve and gas control valve are all fixedly mounted in mid-section body, described Rear body one end connects oxygen valve and gas valve respectively, the other end is connected with mid-section body by handle, described cutting torch is connected described oxygen hose and Gas Pipe respectively with between mid-section body, it is characterized in that, preheat oxygen pipe is provided with in described Gas Pipe, back-fire relief section is provided with in the middle part of described preheat oxygen pipe, described back-fire relief section internal diameter is less than preheat oxygen pipe two ends internal diameter, and back-fire relief section wall offers through hole, be provided with wireway in described handle, oxygen is through oxygen valve, wireway, cutting oxygen valve, oxygen hose enters cutting torch, and preheat oxygen is through oxygen valve, wireway, mid-section body, preheat oxygen pipe enters cutting torch, and combustion gas is through gas valve, handle, gas control valve, Gas Pipe enters preheat oxygen pipe.
2. a kind of anti-backfire welding torch according to claim 1, is characterized in that, described through hole at least one.
3. a kind of anti-backfire welding torch according to claim 1 and 2, it is characterized in that, described through-hole diameter is 1.3-1.5mm.
4. a kind of anti-backfire welding torch according to claim 1, is characterized in that, described back-fire relief section internal diameter is 1.3-1.5mm.
5. a kind of anti-backfire welding torch according to claim 1, it is characterized in that, be positioned at mid-section body end in described preheat oxygen pipe to be provided with spiral base and one end and to be connected in spiral bar on spiral base, the described spiral bar other end is towards cutting torch, and described spiral base fixes on preheat oxygen inside pipe wall.
6. a kind of anti-backfire welding torch according to claim 1, it is characterized in that, described gas control valve is positioned at the side of mid-section body.
7. a kind of anti-backfire welding torch according to claim 1, is characterized in that, be provided with check valve between described gas valve and Rear body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210571762.8A CN103047650B (en) | 2012-12-25 | 2012-12-25 | Novel anti-backfire cutting and welding torch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210571762.8A CN103047650B (en) | 2012-12-25 | 2012-12-25 | Novel anti-backfire cutting and welding torch |
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| Publication Number | Publication Date |
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| CN103047650A CN103047650A (en) | 2013-04-17 |
| CN103047650B true CN103047650B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210571762.8A Active CN103047650B (en) | 2012-12-25 | 2012-12-25 | Novel anti-backfire cutting and welding torch |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110848568B (en) * | 2019-12-10 | 2024-07-05 | 安徽启东热能科技有限公司 | Gasifying device for welding and cutting fuel gas |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022441A (en) * | 1975-11-28 | 1977-05-10 | Victor Equipment Company | Universal torch |
| US4509689A (en) * | 1982-10-01 | 1985-04-09 | Kuo Chuan Ming | Cutting torch |
| US4572483A (en) * | 1984-05-30 | 1986-02-25 | I Ling Industry Co., Ltd. | Cutting torch |
| CN102759104A (en) * | 2012-07-04 | 2012-10-31 | 宁波隆兴焊割科技股份有限公司 | Non-flameout efficient anti-backfire cutting torch |
-
2012
- 2012-12-25 CN CN201210571762.8A patent/CN103047650B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022441A (en) * | 1975-11-28 | 1977-05-10 | Victor Equipment Company | Universal torch |
| US4509689A (en) * | 1982-10-01 | 1985-04-09 | Kuo Chuan Ming | Cutting torch |
| US4572483A (en) * | 1984-05-30 | 1986-02-25 | I Ling Industry Co., Ltd. | Cutting torch |
| CN102759104A (en) * | 2012-07-04 | 2012-10-31 | 宁波隆兴焊割科技股份有限公司 | Non-flameout efficient anti-backfire cutting torch |
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| CN103047650A (en) | 2013-04-17 |
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Denomination of invention: A New Type of Temper-proof Welding and Cutting Torch Effective date of registration: 20220809 Granted publication date: 20150107 Pledgee: Ningbo Yinzhou Rural Commercial Bank Co., Ltd. Hengxi Sub-branch Pledgor: NINGBO LONGXING WELDING CUTTING TECHNOLOGY STOCK Co.,Ltd. Registration number: Y2022330001688 |