CN2339863Y - Gas mixing apparatus for welding-cutting torch - Google Patents
Gas mixing apparatus for welding-cutting torch Download PDFInfo
- Publication number
- CN2339863Y CN2339863Y CN 98225313 CN98225313U CN2339863Y CN 2339863 Y CN2339863 Y CN 2339863Y CN 98225313 CN98225313 CN 98225313 CN 98225313 U CN98225313 U CN 98225313U CN 2339863 Y CN2339863 Y CN 2339863Y
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- CN
- China
- Prior art keywords
- gas
- welding torch
- gas mixing
- welding
- mixing tube
- 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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- Arc Welding In General (AREA)
Abstract
The utility model relates to a Gas mixing device for welding and cutting torches which is arranged in a welding and cutting torch and comprises a gas mixing tube and a valve core. The utility model is characterized in that the inner bore of the gas mixing tube is provided with a screw rod, and the end part of the valve core is frustum-shaped and is contacted with the taper hole of the middle base of the welding and cutting torch. The improved Gas mixing device for welding and cutting torches enhances the tempering resistance of the welding and the cutting torch, the gas can be sufficiently mixed, so the section of cutting material is smoother. The valve core can not break, and the utility model reduces the repair rate of the valve core and enhances labor productivity.
Description
The utility model relates to a kind of gas welding, cutting tool, particularly a kind of welding-cutting tool gas mixer.
In the welding torch of selling on the market gas mixer is installed, it includes gas mixing tube (1), be installed in the valve pocket (3) in the welding torch seat (2), with can be relative the axially movable composition such as pin type spool (4) part of etc.ing in valve pocket surface, during welding torch work, regulating spool moves axially, oxygen is from the gap ejection of spool and valve pocket inner surface, simultaneously, combustion gas can be flowed out from the gap between valve pocket outer surface and the gas mixing tube end inner surface, because gas is penetrated the suction principle, because of ejection oxygen gas flow rate height, and combustion gas is sucked, thereby make oxygen and combustion gas in gas mixing tube, evenly mix back ejection tip, guarantee welding torch operate as normal, but its shortcoming is this install anti-tempering ability a little less than, easier generation tempering phenomenon during maloperation particularly, the person and equipment are caused serious hidden danger, pin type valve core structure in addition, easy bending when making the use of processing difficulties and spool, fracture, the repair rate height influences labor productivity.
The utility model purpose be at above-mentioned shortcoming, to provide a kind of mainly be to improve the anti-tempering ability of welding torch, secondly is that spool is difficult for curved disconnected welding torch gas mixer.
The utility model purpose is achieved in that promptly the gas mixer in the existing welding torch is improved, the valve pocket and the gas mixing tube that are about in original gas mixer are merged into newly-designed gas mixing tube, at the gas mixing tube endoporus screw rod is installed, and change original pin type spool end into taper type, by above-mentioned improvement design, facts have proved that screw rod produces very big resistance to combustion gas tempering meeting, stop the tempering phenomenon generation, reached purpose.
Through above-mentioned improvement, improved the anti-tempering ability of welding torch greatly, guaranteed the safety of user and equipment, gas fully mixes, and heats soon during work, and the cutting material section is brighter and cleaner, spool can not rupture, and has reduced the spool repair rate, has improved work rate production.
Give to describe in detail below in conjunction with accompanying drawing
Fig. 1 is the existing gas mixer structural representation in the welding torch of selling on the market.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is screw rod (a 8) organigram.
Fig. 4 is that the A of Fig. 3 is to view.
Redesign is installed in the welding torch welding torch gas mixer that includes gas mixing tube (5) and spool (12) in the seat, at the gas mixing tube endoporus screw rod (8) is installed, when Oxygen Flow behind screw rod, the Oxygen Flow that formation is rotated.The fuel gas path of combustion gas in the welding torch such as acetylene, propane, natural gas etc. also can copy original structure to flow through behind the gap, sucked by oxygen, the structure that the utility model adopts is near gas mixing tube is positioned at the place ahead, screw rod outlet side, set up several combustion gas air admission holes (11) and can reduce the pressure loss of Oxygen Flow like this, in time suck combustion gas and form mixed air uniformly, use so that the welding torch to be provided.As be further to improve oxygen gas flow rate, so the nozzle (7) of a smaller aperture due is installed, further improve the flow velocity of rotation oxygen between screw rod outlet side and combustion gas air admission hole, strengthen the suction effect of penetrating of oxygen, it is more abundant that gas is mixed.Gas mixing tube can integrally be installed in the welding torch in the seat, for the ease of processing, so be with the pipe box (6) that is connected with (10) in the welding torch by nut (9) in the gas mixing tube appearance.The spool of control oxygen flow can adopt existing structure that spool is contacted with the gas mixing tube inlet end, the utility model is thought of as easy to process, sealing is better, factor such as frangibility not, so spool (12) end is a taper type, its length can shorten 2/3 by existing pin type spool, and spool design becomes with the taper hole of seat in the welding torch to contact.Above-mentioned screw rod can reverse with the sheet metal of narrow shape and make, and can certainly adopt high-intensity plastic injection-moulded shaping.
Claims (5)
1. gas mixing tube that includes that is installed in the welding torch in the seat, the welding torch gas mixer of spool is characterized in that the gas mixing tube endoporus is equipped with screw rod (8).
2. by the described welding torch of claim 1 gas mixer, it is characterized in that gas mixing tube (5) is provided with combustion gas air admission hole (11), it is positioned at the place ahead of screw rod (8) outlet side.
3. by the described welding torch of claim 1 gas mixer, it is characterized in that being equipped with between screw rod outlet side and the combustion gas air admission hole nozzle (7).
4. by the described welding torch of claim 1 gas mixer, it is characterized in that spool (12) end is a taper type, and contact with the taper hole of seat (10) in the welding torch.
5. by claim 1 or 2 or 3 or 4 described welding torch gas mixers, it is characterized in that gas mixing tube is with the pipe box (6) that is connected with seat (10) one ends in the welding torch by nut (9) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225313 CN2339863Y (en) | 1998-10-09 | 1998-10-09 | Gas mixing apparatus for welding-cutting torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98225313 CN2339863Y (en) | 1998-10-09 | 1998-10-09 | Gas mixing apparatus for welding-cutting torch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2339863Y true CN2339863Y (en) | 1999-09-22 |
Family
ID=33976031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98225313 Expired - Fee Related CN2339863Y (en) | 1998-10-09 | 1998-10-09 | Gas mixing apparatus for welding-cutting torch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2339863Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460754C (en) * | 2005-07-08 | 2009-02-11 | 吴世苏 | Jet-suction type constant pressure gasoline cutting torch |
| CN101941109A (en) * | 2010-08-31 | 2011-01-12 | 蒋海翔 | Small-sized portable air brazing welding gun |
-
1998
- 1998-10-09 CN CN 98225313 patent/CN2339863Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460754C (en) * | 2005-07-08 | 2009-02-11 | 吴世苏 | Jet-suction type constant pressure gasoline cutting torch |
| CN101941109A (en) * | 2010-08-31 | 2011-01-12 | 蒋海翔 | Small-sized portable air brazing welding gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |