WO2000019147A1

WO2000019147A1 - A hand-held petrol torch with self-preheating

Info

Publication number: WO2000019147A1
Application number: PCT/CN1999/000112
Authority: WO
Inventors: Shile Gao
Original assignee: Shile Gao
Priority date: 1998-09-25
Filing date: 1999-08-11
Publication date: 2000-04-06
Also published as: AU5276999A

Abstract

The invention relates to an improved torch which be widely used for welding, cutting and heating of nonferrous metallic, ferrous metallic and nonmetallic materials, wherein the torch uses petrol-oxygen as fuel and vaporizes petrol by self-preheating. The torch is comprised of nozzle, torch-body, oil pipe, oil storage tank etc. and its flame temperature can be as high as 2700 °C. Its advantages include high operation speed and high quality of welding and cutting, as well as the cost of the torch can be cut down more than 90 % compared with acetylene torch.

Description

FIELD OF THE INVENTION

The invention is an improvement on welding and cutting equipment, and is a one-handed, self-heating gasoline cutting torch that uses oxygen-gasoline as a fuel and performs flame processing on metal or non-metal.

Prior art prior to the present invention

At present, domestic and foreign metal welding and cutting fields traditionally use acetylene, liquefied petroleum gas, propane and other fierce cutting torches as fuels. In use, acetylene and propane have high costs, difficult transportation, difficult storage, difficult to carry, Insufficient safety and other shortcomings; due to the low flame temperature of petroleum liquefied vapor, there are shortcomings such as that it cannot work normally at low temperatures.

Object of the invention

The purpose of the present invention is to provide a non-ferrous metal, ferrous metal, non-metallic material for welding and heating, and to provide a handle-type self-heating gasoline torch using oxygen-gasoline as fuel, which can be widely used in metallurgy, shipbuilding, and automobiles. , Machinery and other industries.

Technical solution of the present invention

Brief description of the handlebar type self-heating gasoline welding torch of the present invention:

The handlebar type self-heating gasoline welding and cutting torch of the present invention is characterized in that the gasoline is vaporized by self-heating and flame processing is performed with gaseous gasoline. The principle of self-heating is:

① Oil circuit: gasoline, oil inlet pipe, rear body, middle body, oil pipe, and nozzle one (control oil quantity through oil regulating valve) front body;

② Gas path: oxygen-air inlet pipe-rear body-central body is divided into two paths-a cutting oxygen one (control by cutting oxygen valve) high-pressure oxygen tube one front body one cutting or welding;

b mixed oxygen (controlled by the mixed oxygen valve) mixed oxygen pipe a front body;

Oxygen-gasoline in the oil and gas paths are mixed in the front body to form an oxygen-gasoline mixed vapor, which enters the welding torch through the small hole in the welding torch body and then enters the vaporization chamber. Then the mixed vapor is ejected from the front end of the welding torch. During the ignition operation, the distance between the end of the core of the welding torch and the end of the welding torch is L = 0-5mm. The high temperature generated by the flame can directly heat its own vaporization chamber to make the oxygen-gasoline mixed vapor in the vaporization chamber. Gasification forms a gaseous mixture.

The handlebar type self-heating gasoline welding torch of the present invention is composed of a welding torch, a welding torch, an oil inlet pipe, an intake pipe, and an oil storage tank, and is characterized in that the front body of the welding torch is connected to the welding torch, and The main body is connected to the pipeline oxygen or oxygen cylinder through the air inlet pipe, and connected to the oil storage tank through the oil inlet pipe. The oil pipe of the welding torch is hidden in the mixed oxygen pipe. Built-in oil needle, one end of the oil needle is connected to the nozzle, and the nozzle is connected with the oil pipe. An oil regulating valve is set at the other end of the oil needle, and the nozzle is opened and closed by rotating the oil regulating valve to control the flow of gasoline. Mixed oxygen pipe One end of the high-pressure oxygen pipe is welded on the front body, and the side end of the front body is connected to the welding torch. The outer layer of the welding torch is a copper hollow welding and torch jacket with a built-in nozzle core and one end of the nozzle core. It is connected with the main body of the welding torch, the vaporization jacket is connected with the core of the welding torch, the vaporization inner sleeve is in interference fit with the front end of the hard cutting nozzle jacket, and the vaporization chamber is composed of the welding torch jacket, the vaporization jacket, and the vaporization inner jacket. A mixture of gasoline and oxygen After entering the vaporization chamber from the small hole on the main body of the welding torch, it will self-heat and vaporize after entering the vaporization chamber; the distance between the end of the core of the welding torch and the end of the outer cover of the welding torch is L = 0-5mm _; The valve and mixed oxygen valve are connected to the rear body through the handle, the oxygen inlet pipe and the oil inlet pipe are connected to the rear body; the oxygen inlet pipe can be connected to the pipeline oxygen or the oxygen cylinder; the oil inlet pipe is connected to the oil storage tank, and the oil storage tank body For a circle The cylindrical sealed container has a protective cover on the tank body, which covers the manual air pump, safety valve, pressure gauge, and oil valve cover, and an oil pipeline is connected under the oil valve, which is passed into the tank and a tempering is set in the oil pipeline. To prevent the ball, the other end of the oil pipeline is connected with a filter. The manual air pump extends into the tank at an angle to increase the pressure in the tank during work. The pressure reading is displayed on the pressure gauge. When the pressure in the tank exceeds the normal working pressure, The safety valve is relieved of pressure; the safety valve is composed of a handwheel, a valve body, a pressure regulating nut, a valve core, a rubber pad, a spring, and a valve cover. A valve core is built into the valve body, and a rubber pad is provided at the bottom of the valve core. The spring is placed, and the spring force of the spring and the working pressure in the tank are controlled by the pressure adjusting nut. When the working pressure is exceeded, the valve core is lifted and released. The upper part of the valve body is a valve cover, and there is a pressure relief hole in the valve cover. A handwheel is set at the top.

The handlebar type self-heating gasoline powerful cutting torch of the present invention can be widely used for welding, cutting and flame heating of non-ferrous metals, ferrous metals and non-metal materials. The flame temperature is up to 2700 ° C, and the welding, cutting, heating speed is fast and quality. Well, the surface is smooth without undercuts, burn-in, slagging, and no surface recarburization and hardening. It is suitable for cutting steel with a thickness of 4 to 1000mm. Using gasoline as fuel saves energy and reduces costs. Compared with oxygen-acetylene gas, fuel costs can be reduced by more than 90%. Its performance is safe and reliable, simple operation, and can be used in automatic cutting machine as a matching cutting torch. BRIEF DESCRIPTION OF THE DRAWINGS

In order to further illustrate the features and structure of the present invention, the following describes the present invention in detail with reference to the embodiments, in which- FIG. 1 is a schematic diagram of the overall structure of a handlebar type self-heating gasoline welding torch

Figure 2 is the structure of the powerful cutting torch

Figure 3 is the structure of the welding torch

Figure 4 is a structural diagram of the oil storage tank Figure 5 is a structure diagram of the safety valve

Examples

The handlebar type self-heating gasoline welding torch of the present invention (see FIG. 1) is composed of a welding torch 1, a welding torch 2, an oxygen inlet pipe 3, an oil inlet pipe 4, and an oil storage tank 5, and is characterized by: The front main body of 2 is connected to the welding torch 1, the rear main body of the welding torch 2 is connected to the pipeline oxygen or oxygen cylinder through the oxygen inlet pipe 3, and is connected to the oil storage tank 5 through the oil inlet pipe 4;

(See Fig. 2) The oil pipe 15 of the welding torch 2 is hidden in the mixed oxygen pipe 14. An oil needle 16 is built in the oil pipe 15, and is connected to the nozzle 17 through a thread. The nozzle 17 and the oil pipe 15 are welded together. One end is provided with an oil regulator 12, and the nozzle 17 is opened or closed by rotating the oil regulator valve 12 to control the flow of gasoline. One end of the mixed oxygen pipe 14 and the high pressure oxygen pipe 7 is welded to the front body 6, and the front body 6 The side end is connected to the welding torch 1 in a plane; gasoline enters the mixed oxygen pipe 14 and the high-pressure oxygen pipe 7 from the oil inlet pipe 4 through the middle body 9 and the oxygen flow is adjusted by the mixed oxygen valve 13 and the high-pressure oxygen valve 8. A small hole in the main body 6 enters the front main body 6 and mixes with gasoline. The middle main body 9 is provided with a mixed oxygen valve 13 and a high-pressure oxygen valve 8, which are connected to the rear main body 11 through a handle 10, and connected to the oxygen inlet pipe 3 and The oil inlet pipe 4 is connected;

(See Figure 3) The welding torch 1 is composed of a welding torch body 19, a vaporization jacket 22, a vaporization inner sleeve 23, a hard cutting nozzle core 21, and a hard cutting nozzle jacket 20. The welding torch jacket 20 is a copper hollow sleeve. Built-in welding nozzle core 21, one end of the cutting nozzle core 21 is connected to the cutting nozzle body 19, the vaporization jacket 22 is connected to the welding nozzle core 21, and the vaporization inner sleeve 23 and the cutting nozzle jacket 20 are in interference fit. The cutting nozzle jacket 20, the vaporization jacket 22, and the vaporization inner sleeve 23 form a vaporization chamber. The mixture of gasoline and oxygen enters the vaporization chamber through a small hole on the cutting nozzle body 19, and the end of the cutting nozzle core 21 is away from the welding nozzle jacket. The distance between the ends of 20 is L = 0-5mm. The high temperature generated by the flame during operation can directly heat the vaporization chamber, so that the oxygen-gasoline mixture in the vaporization chamber is vaporized to form a gaseous mixture, which is ejected from the cutting nozzle;

(See Figure 4) The oil storage tank is composed of a manual air pump 24, a safety valve 25, a pressure gauge 26, a protective cover 27, a tank body 28, a tempering ball 29, a filter 30, a pipeline 31, and an oil valve 32. The tank body 28 is a cylindrical closed container. A protective cover 27 is provided on the tank body 28 to cover the manual air pump 24, the safety valve 25, the pressure gauge 26, and the oil valve 32, so that it is not covered during transportation or storage. If it is damaged, an oil transfer pipe 31 is connected below the oil valve 32 and passed into the tank body 28. The oil transfer pipe 31 has a built-in tempering prevention ball 19 to prevent tempering. The other end of the oil transfer pipe 31 is connected to a filter 30. Made of gold powder or white steel mesh and other filtering materials, which can remove impurities in the oil. The manual air pump 24 tilts into the tank 28. When the manual air pump 24 works, the pressure in the tank can be increased. The pressure is displayed by the pressure gauge 16. Reading, when the pressure in the tank rises above the normal working pressure, the safety valve 25 works to release the pressure, and the oil storage tank is safe and reliable.

(See Figure 5.) The safety valve is composed of a handwheel 33, a valve body 34, a pressure adjusting nut 35, a valve core 35, a rubber pad 37, a spring 38, and a valve cover 39. A valve core 36 is built in the valve body 34, and the valve The bottom of the core 36 has a rubber pad 37, and the valve The spring 36 is external to the core 36. The spring force of the spring 38 and the working pressure in the tank 28 are controlled by the pressure adjusting nut 35. When the working pressure is exceeded, the valve core 16 is lifted and released, and a valve cover 39 is placed on the upper part of the valve body 34. The wide cover 39 has a small hole as a pressure relief hole, and a hand wheel 33 is provided on the upper part of the valve cover 39.

Claims

Rights request

1. A handlebar-type self-heating gasoline welding and cutting torch, which is characterized by gasification of gasoline by self-heating and flame processing by gaseous gasoline. The principle of self-heating is:

②Gas path: Oxygen, trachea, rear body and middle body are divided into two paths:

a cutting oxygen (controlled by the cutting oxygen valve) high pressure oxygen tube-front body-cutting or welding;

Oxygen-gasoline in the oil and gas channels are mixed in the front body to form an oxygen-gasoline mixed vapor, which enters the welding torch through the small hole in the welding torch body, then enters the vaporization chamber, and then the mixed vapor is ejected from the front end of the welding torch. During ignition, because the distance between the end of the cutting tip core and the end of the welding tip is L = 0-5mm, the high temperature generated by the flame can directly heat its own vaporization chamber and mix the oxygen and gasoline in the vaporization chamber. Vaporization forms a gaseous mixture.

2. The handlebar type self-heating gasoline welding and cutting torch according to claim 1, comprising a welding torch, a cutting torch, an oil inlet pipe, an intake pipe, and an oil storage tank, and a front body of the welding torch It is connected with the welding torch, the rear body is connected with the pipeline oxygen or oxygen cylinder through the air inlet pipe, and is connected with the oil storage tank through the oil inlet pipe;

The oil tube of the welding torch is hidden in the mixed oxygen tube. An oil needle is built in the oil tube, one end of the oil needle is connected to the nozzle, and the nozzle is connected to the oil tube. An oil regulating valve is set at the other end of the oil needle; mixed oxygen tube, high-pressure oxygen One end of the tube is connected to the front body, and the side of the front body is connected to the cutting nozzle. The middle body is provided with a mixed oxygen valve and a high-pressure oxygen valve. The handle is connected to the rear body through the handle. The tubing is connected to the rear body;

The outer layer of the sharp cutting tip is a copper hollow welding tip jacket with a built-in nozzle core. One end of the nozzle core is connected to the welding tip body. The vaporization jacket is connected to the sharp cutting nozzle core. Cooperating, a vaporizing chamber is formed by a cutting nozzle jacket, a vaporization jacket, and a vaporization inner sleeve. A mixture of gasoline and oxygen enters the vaporization chamber from a small hole on the cutting nozzle body and then self-heats and vaporizes. The end distance of the welding nozzle core The distance between the ends of the cutting nozzle jacket is L = 0-5mm _{; the} oil storage tank is a cylindrical closed container, and there is a protective cover on top of the tank. The manual air pump, safety valve, pressure gauge, oil valve cover Inside, an oil pipe is connected under the oil valve, and it is passed into the tank. A tempering prevention ball is set in the oil pipe, and the other end of the oil pipe is connected with a filter. A manual air pump is inclined into the tank, and the pressure in the tank can be raised during work. High, the pressure reading is displayed by a pressure gauge, and the safety valve is released; the safety valve is composed of a handwheel, a wide body, a pressure adjusting nut, a valve core, a rubber pad, a spring, and a valve cover. A valve core is built in the valve body, and the valve core Bottom of A rubber Pad, external spring of valve core, spring force and working pressure in the tank are controlled by pressure adjusting nut. The valve core lifts and releases pressure. The upper part of the valve body is the valve cover, and there are pressure relief holes in the valve cover. Set up a handwheel.