JPH02133525U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the first embodiment of this invention.
Fig. 2 is a plan view thereof, Fig. 3 is a side sectional view of the second embodiment, Fig. 4 is a plan view thereof, Fig. 5 is a side sectional view of the third embodiment, and Fig. 6 is a plan view thereof. Fig. 7 is a side sectional view of the conventional example, Fig. 8 is its plan view, and Fig. 9 is a side sectional view of the conventional example.
The figure is a plan view of another conventional example. 1... Crater body, 2... Cutting oxygen nozzle, 3...
... base, 5 ... first cylindrical body, 6 ... second cylindrical body,
7...First oxygen supply path, 8...Fuel gas supply path,
9...Second oxygen supply path.

Claims (1)

[Claims for Utility Model Registration] (1) A crater body and a cutting oxygen nozzle fitted in the center of the crater body, and the opening surface of the crater body has an oxygen injection port and an oxygen injection nozzle centered around the cutting oxygen nozzle. A high-pressure, high-speed cutting crater in which fuel gas injection ports are formed concentrically and alternately in the radial direction, and a heated flame surrounding the cutting oxygen flow is formed by oxygen and fuel gas from the oxygen injection port and the fuel gas injection port. In this case, the crater body is composed of a base portion in which oxygen and fuel gas supply paths are formed, and a plurality of concentric cylindrical bodies screwed onto the tip end surface of this base, and the cylindrical bodies are mutually connected to each other. A high-pressure, high-speed cutting crater characterized in that an oxygen and gas flow path communicating with an oxygen and fuel gas supply path at the base is formed between opposing surfaces of the two. (2) At least one cylindrical body of the crater body is provided with branch holes branching from the oxygen supply path so that the openings thereof alternate with the fuel gas supply path in the circumferential direction. The high-pressure high-speed cutting nozzle according to claim 1. (3) A crater body and a cutting oxygen nozzle fitted in the center of the crater body, and the opening surface of the crater body has an oxygen injection port and a fuel gas injection port concentrically centered around the cutting oxygen nozzle. In the high-pressure high-speed cutting nozzle, which is formed alternately in the radial direction to form a heated flame surrounding the cutting oxygen flow by oxygen and fuel gas from the oxygen injection port and the fuel gas injection port, A tapered blowpipe connection part is formed on the side, and a cylindrical cover is attached to the tip side of the crater body, into which the crater body is loosely fitted, and which has a male threaded part on the outer surface into which the blowpipe is screwed, A high-pressure, high-speed cutting nozzle characterized in that the nozzle main body is formed with a locking surface for locking a base end surface of the cover.