DESCALING NOZZLE

PROBLEM TO BE SOLVED: To efficiently prevent the early damage to the periphery of an orifice resulting from the lowering of its impact resistance while the wear resistance of the periphery to superhigh-pressure water is enhanced. SOLUTION: A liq. passage 7a with the diameter decreased gradually towa...

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Bibliographic Details
Main Authors ASAKAWA HIROYOSHI, HASHIMOTO TOSHIE
Format Patent
LanguageEnglish
Published 08.04.1997
Edition6
Subjects
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
ATOMISING APPARATUS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
NOZZLES
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
SPRAYING APPARATUS
SPRAYING OR ATOMISING IN GENERAL
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To efficiently prevent the early damage to the periphery of an orifice resulting from the lowering of its impact resistance while the wear resistance of the periphery to superhigh-pressure water is enhanced. SOLUTION: A liq. passage 7a with the diameter decreased gradually toward the downstream side in the liq. injecting direction and an orifice 7b with the inlet side communicated with the downstream side of the liq. passage in the liq. injecting direction and having a long-slit shape when seen from the liq. injecting direction are formed in the nozzle main body 7 made of a sintered hard alloy. A concaved part 12 with the diameter gradually decreased toward the upstream side in the liq. injecting direction is formed in the tip part 11 of the main body, and the tip part is integrally formed into a ring surrounding the entire periphery of the concaved part. The entire periphery of the orifice outlet side is opened on the bottom side of the concaved part, and a high- pressure liq. W injected from the orifice is collided with the surface of a material to remove the scale on the material surface.
Bibliography:Application Number: JP19950256002