CN2030693U - Isobaric cutting torch for multiple combustion gases - Google Patents

Abstract

The utility model discloses an isobaric cutting torch for multiple combustion gases, comprising a combined cutting nozzle, a cutting nozzle nut screw, a cutting nuzzle joint, a cutting oxygen pipe, a preheating oxygen pipe, a gas pipe handle, a pressing handle type control valve, an oxygen and gas flexible hose joint. A cutting core is sheathed with a cutting sleeve to form the combined cutting nozzle. The utility model can be separated to be processed with high qualification rate and good quality, has the advantages of low cost and novel structure, and is embedded with an oxygen spray head and a spiral organ to ensure the gas in the preheating oxygen pipe to be mixed thoroughly, so the utility model can not be used only with the acetylene gas but also with the natural gas and the liquefied gas; the utility model can be operated with one hand so as to be used in ships, bridges or in the air to cut metal.

Description

Isobaric cutting torch for multiple combustion gases

The utility model belongs to welding and fusion cutting instrument.

Domestic and international known equal pressure cutting torch is supplied with the oxygen of preheat flame burning and combustion gas and is chewed interior mixing cutting, and to chew be monoblock type owing to cut, wherein oxygen, combustion gas through hole are elongated and crooked, must adopt rotation to forge the mill method and make, difficulty of processing is especially big, and is with high costs.Moreover known equal pressure cutting torch is limit because of being subjected to structure, can only be applicable to that acetylene gas does combustion gas, and the acetylene gas price is expensive partially, and source of goods shortage is so cost is also high during cutting metal.

The purpose of this utility model is to overcome the deficiency of prior art, proposes a kind of oxygen of preheat flame and combustion gas and does not mix in chewing and cutting to chew and mixing in the joint cutting, and cut to chew and be not monoblock type but the novel cutting torch of releasable.This structure can make preheated oxygen and combustion gas fully be mixed, preheat flame flameholding and concentrating, and speed is fast during cutting operation, and quality is good.Monoenergetic is not applicable to that the higher acetylene gas of calorific value does combustion gas, can be applicable to the natural gas that calorific value is lower yet, and liquefied gas has enlarged the scope of application of combustion gas.Cut to chew in addition and be combined type, cutting tip and cut and chew cover and can adopt the common process method to make respectively need not rotate and forge levigate length and crooked gas via-hole, and its processing technology is simple, makes easily, and is with low cost, is easy to be promoted the use.

Figure-1 always schemes for the utility model structure.Mainly cut and chew (1) and cut and chew nut (2), cut and chew joint (3), cutting oxygen pipe (4), preheat oxygen tracheae (5), Gas Pipe (6), handle (7), pressure handle formula control valve (8), oxygen hose connector (9), gas hose joint parts such as (10) and form by combination.Combination is cut to chew (1) and cut and is chewed joint (3) and have particular structure among the figure, and shape and function are analysed and observe with B-B by A-A and to be analysed and observe respectively detailed description in the back.Cutting oxygen pipe (4) is positioned at the top, and preheat oxygen tracheae (5) is positioned at below and parallel with Gas Pipe (6), and three tracheaes form Chinese character pin-shaped arrangement, becomes three fonts to arrange the compactness attractive in appearance that seems than it known cutting torch.The utility model all the other in addition parts equippedly go up all similarly in shape, size and making with prior art, just do not give unnecessary details here.

Figure-2 is for cutting the A-A cutaway view of chewing joint (3).

Cut the right side top of chewing joint (3) the secondary shoulder hole that to have a diameter at butt end be φ 8mm among the figure, the rear end in hole is equipped with Gas Pipe (6), and front end is blast tube (13).Cutting the below, right side of chewing joint (3), parallel again three grades of shoulder holes that have a diameter at butt end φ 8mm, the rear end in hole is equipped with preheat oxygen tracheae (5); The front end in hole is the mixed gas passage (14) of oxygen and combustion gas; The middle part in hole is embedded with preheated oxygen shower nozzle (11), be drilled with the inclined hole of one 30 ° diameter phi 2mm between two shoulder holes, two parallel shoulder holes are communicated with, combustion gas then enters annular gap between three grades of shoulder holes and the oxygen nozzle (11) through inclined hole, because annular gap only has 0.75mm, can prevent tempering effectively.

Oxygen nozzle (11) center is drilled with the hole of a diameter phi 3.5mm, placed the spiral organ (12) of a long 20mm of diameter phi 3.5mm that rolls into sheet brass in the hole, make its preheated oxygen produce spray-hole (16) ejection of eddy current from diameter phi 1mm by spiral organ (12), converge mutually at mixed gas passage (14) with combustion gas, turn into the gaseous mixture through hole (15) of 2 diameter phi 2mm then, chew (1) thereby flow into to make up to cut.

Because preheated oxygen and combustion gas are under the effect of eddy current, can fully mix fully, to guarantee preheat flame smooth combustion, thereby not fastidious combustion gas quality and kind, no matter be the higher acetylene gas that is easy to mix of calorific value, still calorific value hangs down not miscible natural gas, and liquefied gas all can be applicable to cutting operation of the present utility model.

Figure-3 cuts the B-B cutaway view of chewing (1) for combination.

Combination cuts that the cutting tip (18) chewing (1) and made by brass and red copper make cuts and chews (19) two parts of cover and form.The two is chewed nut (2) and is connected to cut and chews on the joint (3) by cutting.Because of its material with two kinds of different hardness is made favorable sealing property when fastening.Cutting tip (18) top with cut the cutting oxygen through hole of chewing on the joint (3) (17) and match, a umbrella step is stretched out on cutting tip (18) top, is drilled with the aperture of 6 diameter phi 1.5mm equidistantly along step, uses as oxygen combustion mixed gas passage.For making gaseous mixture when ejection distributed uniform, its afterbody is along circumferentially having 12～16 wide 0.6mm equidistantly, the groove of dark 1mm.Cut and chew cover (19) shape such as cartridge case, last bore dia is φ 13mm, and following bore dia is φ 6mm, and a circular step is protruded on the top, and the upper edge of step and cutting tip (18) insert and make up, and the lower edge is chewed nut (2) and screwed and cooperate with cutting.Cutting tip (18) inserts to cut chews cover (19), and the former end is than the terminal recessed 1.5mm of the latter.

Since cutting tip (18) with cut that to chew cover (19) be releasable, can process separately, remove the straight hole of cutting oxygen by cutting tip (18) center the length, all the other all are shallow bore hole or weak point groove, it is very convenient to add man-hour, also easy during combination.Forge with time-consuming rotation and to grind the method for doing relatively, add the steady quality in man-hour, the qualification rate height, operation is simplified, and is with low cost, cost only be equivalent to monoblock type cut chew 20%.

The utility model is at the thickness difference that is cut metal material, and having the combination of three kinds of specifications to cut to chew (1) can be for changing, and its cutting oxygen outlet diameter is followed successively by φ 1.1mm, φ 1.3mm, φ 1.6mm.Combination is cut the cutting of injector cutting torch of the overall dimensions of chewing (1) and common usefulness and is chewed correspondingly,, changes jet absorption type and cuts also to chew and can carry out cutting operation without natural gas and liquefied gas if only use acetylene gas.

Comprehensively described, the utlity model has advantages such as easy processing, quality is good, cost is low, safe in utilization, and combustion gas is applied widely.After regulating preheated oxygen and combustion gas, can one-handed performance, be specially adapted to boats and ships, bridge and work high above the ground cutting metal.

Claims (1)

1, a kind of acetylene gas that is applicable to, natural gas, the equal pressure cutting torch of liquefied gas, mainly cut and chew by combination, cut and chew nut, cut and chew joint, the cutting oxygen pipe, the preheat oxygen tracheae, Gas Pipe, handle, pressure handle formula control valve, oxygen hose connector, the gas hose splice combinations forms, it is characterized in that combination cuts to chew chews the cover plug-in mounting by cutting tip and cutting and constitutes, a umbrella step is protruded on the top of cutting tip, along step 6 equidistant apertures are arranged, the afterbody of cutting tip is along circumferentially having 12-16 root sulculus equidistantly, the end of cutting tip cuts the terminal recessed 1.5mm that chews cover than it behind the plug-in mounting, cut to chew and be drilled with a secondary shoulder hole and three grades of shoulder holes in the joint abreast, be communicated with by an inclined hole between the shoulder hole, wherein three grades of shoulder holes are embedded with an oxygen nozzle, the front end nozzle inside diameter is 1mm, in oxygen nozzle, placed a diameter 3.5mm, the spiral organ of long 20mm, and on the mixed gas passage of three grades of shoulder holes, be drilled with the hole of two diameter mm, and the annular gap of a circle 0.75mm is arranged between oxygen nozzle and the three grades of shoulder holes, the gap communicates with inclined hole and mixed gas passage.

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