Cutting nozzle

Abstract

The invention discloses a cutting nozzle. The cutting nozzle comprises a nozzle core and a nozzle cap arranged on the nozzle core in a sleeving mode. The nozzle core comprises a nozzle cap connectingscrew thread, a metal pipe, an insulating pipe and an oxygen outlet nozzle, wherein the nozzle cap connecting screw thread, the metal pipe, the insulating pipe and the oxygen outlet nozzle are sequentially connected. The nozzle cap connecting screw thread comprises a high-pressure oxygen outlet hole, the metal pipe communicates with the high-pressure oxygen outlet hole, the insulating pipe is inserted into the metal pipe, and one end of the oxygen outlet nozzle is inserted into the insulating pipe. The outlet at the front end of the nozzle cap is provided with a metal ring, an insulating ringis arranged on the inner side of the metal ring, a hole of the insulating ring is a mixed gas outlet hole, and the area between the metal ring and the front end of the oxygen outlet nozzle is a pulseignition discharge area. Thus, by increasing the hole diameter of a mixed gas outlet hole at the front end of a nozzle cap of a traditional cutting nozzle and arranging the insulating ring in the hole, the shortest distance from the front end of the oxygen outlet nozzle to the metal ring at the front end of the nozzle cap can be increased, the pulse ignition distance is adjusted to a better distance, the hole in the middle of the insulating ring can be used as a new mixed gas outlet hole without changing the size of an original mixed gas outlet hole, and the pulse ignition effect and ignitionefficiency can be improved.

Description

technical field [0001] The invention relates to a torch cutting nozzle, in particular to a cutting nozzle. Background technique [0002] The traditional torch is usually ignited by an external fire source, such as a lighter or a match, which may cause burns to the igniter when it is ignited, and when it is operated outdoors, due to the strong wind, Difficult to light a fire. When working at high altitudes, holding a torch in one hand and igniting the fire in the other will also cause the danger of people or objects falling, or when working in special places, it is impossible to bring fire sources such as lighters into it, resulting in problems such as inability to work. [0003] However, between the front end of the oxygen outlet nozzle and the front end of the nozzle cap of the existing pulse automatic ignition torch is a pulse ignition area, and in pulse ignition, if the ignition distance between the two electrodes is too small, the pulse discharge frequency and the numbe...

AI Technical Summary

Problems solved by technology

[0002] The traditional torch is usually ignited by an external fire source, such as a lighter or a match, which may cause burns to the igniter when it is ignited, and when it is operated outdoors, due to the strong wind, difficult to light a fire

When working at heights, holding a torch in one hand and igniting the fire in the other will also cause the danger of people or objects falling, or when working in special places, it is impossible to bring a fire source such as a lighter into it, resulting in problems such as inability to work

[0003] However, between the front end of the oxygen outlet nozzle and the front end of the nozzle cap of the existing pulse automatic ignition torch is a pulse ignition area, and in pulse ignition, if the ignition distance between the two electrodes is too small, the pulse discharge frequency and the number of electric sparks will be reduced. If it is too large, pulse discharge cannot be performed, and the distance between the front end of the traditional oxygen outlet nozzle and the front end of the nozzle cap is fixed, and the distance is small, the effect of using pulse ignition is poor, and the efficiency is low. The hole size of the mixture outlet hole is standard and difficult to change, otherwise it will affect the flame injection effect

[0004] However, the end of the oxygen outlet nozzle of the cutting nozzle of the existing pulse automatic ignition torch inserted into the insulating tube adopts a tapered structure to allow the wire to be inserted for electrical connection. However, in actual use, high-pressure oxygen will affect the wire and cause the wire to swing. , it is easy to cause poor contact between the wire and the oxygen nozzle, resulting in failure to ignite

[0005] And the cutting nozzle that the existing torch that can automatically ignite inside is that the oxygen outlet nozzle is insulated from the torch body, that is, an insulating tube is set between the oxygen outlet nozzle and the mouth cap connecting thread, and the insulating tube The connection between the threaded buckle connected to the mouth cap and the oxygen outlet nozzle is poorly sealed, which may easily cause air leakage

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