CN2200116Y

CN2200116Y - Gasline-oxygen quick cutting torch

Info

Publication number: CN2200116Y
Application number: CN 94215335
Authority: CN
Inventors: 梁光启; 梁心清; 冯宏兴; 宋连仲
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-12
Filing date: 1994-07-12
Publication date: 1995-06-07
Anticipated expiration: 2004-07-12

Abstract

The utility model relates to a gas line-oxygen high speed cutting nozzle for cutting steel, belonging to the technical field of mechanical processing. The high speed cutting nozzle is composed of a main body, an outer cap, an inner sleeve and a cutting nozzle core, wherein, an oxygen cutting hole, an oxygen preheating hole and an oil hole are arranged on the main body; the center of the cutting nozzle core is a Laval pipe; a gas line-oxygen mixing chamber is formed between the cutting nozzle core and an outer sleeve. When the cutting nozzle works, preheated oxygen flows through the oil hole at a high speed to atomize gasoline; atomized gasoline and the preheated oxygen are fully mixed in the gas line-oxygen mixing chamber and sprayed out from the cutting nozzle to be ignited; flame with the temperature more than 2100DEG. C can be obtained, and the cut can be carried out. The utility model has the advantages of high cutting speed, easy fabrication, low cost, etc.

Description

Gasline-oxygen quick cutting torch

The utility model relates to a kind of gasoline that is used to cut steel--oxygen divergent bore nozzle, belongs to the Machining Technology field.

Can obtain flame more than 2100 ℃ with lighting behind the petrol-fueled oxygenation, can successfully cut the steel of thickness below 80 millimeters, this is the technology that three patents (ZL92225731.0, ZL92244852.3,93240658.0) of having declared have realized.After putting goods on the market in batches, the user is generally reflected gasoline--acetylene that oxygen flame cutting speed is more traditional--, and oxygen flame cutting speed is slow slightly, though it is low to cut integrated cost like this, production efficiency is lower, has influenced further popularization.Cutting torch difficulty of processing used in above-mentioned in addition three patents is big, and the cutting torch cost is also higher.

The purpose of this utility model is a kind of novel fast, easy processing of cutting speed of design, the Gasoline cutting torch that cost is also low.It can carry out thermal cutting with the gasoline replace ethine to steel in a wider context.

Content of the present utility model is: a kind of gasoline--the oxygen divergent bore nozzle comprises the cutting torch body, the outer cap of cutting torch, four parts such as cover and cutting nozzle core in the cutting torch.Cutting torch body one end is 30 ° of cone angles, matches with cutting torch, and the other end is that column is outstanding, and this column is outstanding to be stretched in the outer cap of cutting torch.It is the cutting oxygen hole of 4～6mm that there is a diameter at the body center.On the conical surface near body end, along the circumference preheating oxygen hole that evenly to have 6～8 diameters be 0.8～1.5mm, having 8～12 sectional areas on the face of cylinder of body column jag is 0.20～0.50mm ²The oxygen groove, wherein have 2 for straight trough, all the other are for becoming the skewed slot of 30 °～60 ° of angles with axis, the oxygen groove communicates by the recess on the face of cylinder with preheating oxygen hole.In 1～3 of above-mentioned skewed slot, vertical axis is equipped with the oilhole that diameter is 0.5～0.7mm, on the body end conical surface far away, and the oilhole that to have 1～3 diameter be 1～1.5mm, this oilhole communicates with the above-mentioned oilhole of beating in skewed slot.Be placed in the cutting torch body column outstanding with cutting torch outward between the cap.Cutting nozzle core places in the outer cap of cutting torch, forms gasoline between the two--preheat oxygen blending chamber.One end of cutting nozzle core and the column of body are outstanding joins, and the other end is the plum blossom nozzle, and inserts outer cap.The centre of cutting nozzle core is cutting oxygen hole, communicates with the cutting oxygen hole of body.15～20 millimeters away from hole exits place places are for drawing valve that convergent-divergent pipe be, and the bore dia of pipe end is 1.2～4 millimeters.The plum blossom cutting torch of cutting nozzle core end is 12～16 grooves that are uniformly distributed along the circumference, and groove is of a size of (wide * height): (0.5～0.9) * (1～1.5) millimeter.

Description of drawings:

Fig. 1 is the utility model structure principle chart.

Fig. 2 is that the A face among Fig. 1 launches schematic diagram.

Fig. 3 is the B-B profile of Fig. 1.

The working state figure of the cutting torch that Fig. 4 designs for the utility model.

Introduce content of the present utility model in detail below in conjunction with accompanying drawing:

Among Fig. 1～Fig. 4, the 1st, cutting torch body, the 2nd, interior cover, the 3rd, band draws the cutting nozzle core of your jet pipe of valve, and the 4th, the outer cap of cutting torch, the 5th, oil transportation inlet, the 6th, preheat oxygen inlet, the 7th, cutting oxygen inlet, the 8th, atomizing back gasoline and preheat oxygen blending chamber, the 9th, the plum blossom groove of gasoline oxygen mixture ejection cutting torch, the 10th, draw valve that nozzle hole, the 11st, the gasoline hole on the cutting torch body in the preheat oxygen groove of A cylinder, the 12nd, preheat oxygen straight trough and skewed slot, the 13rd, the cylinder recess, the 14th, divergent bore nozzle, the 15th, gasoline cuts special-purpose isobaric cutting torch, the 16th, preheating oxygen valve, the 17th, the gasoline fine tuning valve, the 18th, cutting oxygen valve door, the 19th, gasoline pipe, the 20th, gasoline cistern, the 21st, oxygen hose, the 22nd, oxygen cylinder.

The course of work of the present utility model is: open oxygen cylinder 22, low-pressure meter pressure is transferred to 0.7～0.8MPa, by 21 oxygen is sent in the cutting torch 15.Inject the gasoline of 1/2～2/3 volume in gasoline cistern 20, inflate in gasoline cistern 20 with the vapour tube, jar internal pressure a 0.05～0.2MPa(looks gasoline pipe resistance increase and decrease pressure).Gasoline is depressed in the cutting torch 15 by oil pipe 19.Shut off valve 18 is opened gasoline valve 17 and heat-riser valve 16, and cutting torch 14 exits are available open firing point combustion flame.Totally 6～8 of preheating oxygen holes 6 are uniformly distributed along the circumference, and diameter is 0.8～1.5 millimeter, decide on steam supply oil mass size.Preheat oxygen blows out by oxygen groove 12 on the A cylinder, and gasoline is sucked out and atomizes in the oilhole 11, and spiral and the oxygen that blows out vertically and atomizing back gasoline fully can be lighted by nozzle head 9 ejections after the blending in blending chamber 8, can obtain to be higher than 2100 ℃ of flames.Because the body center is to draw your convergent-divergent of valve pipe, when cutting oxygen with greater than 0.7MPa pressure by the time, the cutting oxygen of ejaculation is ultrasonic fluid.Cutting the combustion-supporting following of oxygen, can cut smoothly.

In the example of the present utility model, preheating oxygen hole 6 totally 6 be uniformly distributed along the circumference, 1 millimeter of diameter phi, oilhole 5 is 1 millimeter of 1 diameter, is 0.6 millimeter perpendicular to the hole of axis, is positioned at a skewed slot end, 0.8～1 millimeter of the outstanding end face of oilhole centre-to-centre spacing column.Totally 12 of the plum blossom nozzle slots of cutting torch, 1.0 millimeters of wide 0.6 millimeters deep in cross section.Skewed slot and section of diameter are 0.6 * 0.4 millimeter on the A face.

Claims

1, a kind of gasoline--oxygen divergent bore nozzle comprises the cutting torch body, and the outer cap of cutting torch is characterized in that also comprising cover and cutting nozzle core in the cutting torch; Described cutting torch body one end is 30 ° of cone angles, match with cutting torch, the other end is that column is outstanding, this column is outstanding to be stretched in the outer cap of cutting torch, it is the cutting oxygen hole of 4～6mm that there is a diameter at the body center, on the conical surface near body end, along the circumference preheating oxygen hole that evenly to have 6～8 diameters be 0.8～1.5mm, having 8～12 sectional areas on the face of cylinder of body column jag is 0.20～0.50mm ²The oxygen groove, wherein there are 2 to be straight trough, all the other are for becoming the skewed slot of 30 °～60 ° of angles with axis, the oxygen groove communicates by the recess on the face of cylinder with preheating oxygen hole, in 1～3 of above-mentioned skewed slot, vertical axis is equipped with the oilhole that diameter is 0.5～0.7mm, on the body end conical surface far away, the oilhole that to have 1～3 diameter be 1～1.5mm, this oilhole communicates with the above-mentioned oilhole of beating in skewed slot; Be placed in the described cutting torch body column outstanding with cutting torch outward between the cap; Described cutting nozzle core places in the outer cap of cutting torch, form gasoline between the two--preheat oxygen blending chamber, one end of cutting nozzle core and the column of body are outstanding joins, the other end is the plum blossom nozzle, and the outer cap of insertion, the centre of cutting nozzle core is cutting oxygen hole, communicate with the cutting oxygen hole of body, 15～20 millimeters away from hole exits place places are for drawing valve that convergent-divergent pipe be, the bore dia of pipe end is 1.2～4 millimeters, the plum blossom cutting torch of cutting nozzle core end is 12～16 grooves that are uniformly distributed along the circumference, and groove is of a size of (wide * height): (0.5～0.9) * (1～1.5) millimeter.