Small-sized portable air brazing welding gun

A portable, brazing technology, used in welding equipment, electric heating devices, metal processing equipment, etc., can solve the problems of no gas pressure regulating device, unable to meet user requirements, no automatic ignition device, etc., to eliminate fear, weight, etc. Light and easy to carry

Active Publication Date: 2011-01-12
蒋海翔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Patent No. 90222738.6 "Portable welding torch" also provides a portable small welding torch that makes the flame spray out in a pointed shape and makes the flame temperature reach 1600°C, b

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  • Small-sized portable air brazing welding gun
  • Small-sized portable air brazing welding gun
  • Small-sized portable air brazing welding gun

Examples

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[0014] The embodiments of the present invention will be further described below in conjunction with the drawings.

[0015] There are four uniformly distributed through holes with a chamfer angle of 120° on the central periphery of the air mixer 8. The through holes have a diameter of Φ5~Φ6mm and communicate with each other. The through holes are air intake holes 8-1 to communicate with the outside, so that the outside air can be smooth. Enter and mix with gas.

[0016] The air mixer 8 has a through hole in the axial middle, an opening at one end, and a nozzle 7 with a spray hole on the bottom surface of the other end, which is inserted into a stepped hole at one end of the air mixer 8 with a sealing ring.

[0017] There is a through hole in the middle, and the through holes at both ends of the nozzle 10 are horn-shaped to facilitate the inflow and outflow of air and gas, and are respectively fixed to one end of the gun barrel 14 and the air mixer 8 by external threads on the nozzle. ...

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Abstract

The invention discloses a small-sized portable air brazing welding gun. Air inlets which are communicated are formed on an air mixer, an adjusting valve component is formed by connecting an adjusting hand wheel, a shaft and nuts by screws and is matched with a reducing spring in a spring base, the spring base is arranged in a round nut, and the round and adjusting nuts are connected to the inner wall of a shell of a reducing valve; and a filter I is arranged in a thimble of an air bottle, a filter II and an air needle spring are arranged in an air needle base, a steel needle is also fixed on an air needle with an air needle sealing gasket, one end face of a disc-shaped bowl contacts the steel needle, and the other end of the disc-shaped bowl is matched and assembled with a sealing gasket which is tightly adhered to the spring base. The small-sized portable air brazing welding gun has the advantages that: the complete separation of liquid and air-phase gas is realized by setting two stages of filters, and combustible liquid-phase components cannot enter a gas channel, so that the phenomena of incomplete combustion and red flame are radically prevented; the reducing valve component has the dual functions of pressure adjustment and backfire prevention and can automatically close a flow channel of a gas bottle in case of backfire, so that hazard safety accidents caused by backfire are radically avoided and the safety of the gas bottle is guaranteed at the same time; and the small-sized portable air brazing welding gun is easy to operate, wide in application range, comfortable in handfeel and portable.

Description

technical field [0001] The invention relates to a welding torch, in particular to a small portable gas brazing welding torch used for various non-ferrous metal pipes or repairing parts on the maintenance site. Background technique [0002] At present, gas brazing welding technology and welding torches have been widely used, especially in the chemical industry, refrigeration, and household appliances industries. Portable gas brazing welding torches are used for on-site maintenance services. Because of their small size, they do not require gas cylinders and are easy to carry. , concentrated firepower at welding points, and easy operation make this type of miniaturized portable gas brazing torch favored by many users. [0003] Patent No. 90222738.6 "Portable Welding Torch" also provides a portable small welding torch that makes the flame spray out in a pointed shape and makes the flame temperature reach 1600°C, but because it has no gas pressure adjustment device and no automat...

Claims

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Application Information

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IPC IPC(8): B23K3/04
Inventor 蒋海翔
Owner 蒋海翔
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