A Water-Cavity Accelerated External Mixing Jet Nozzle

Abstract

The invention discloses an outer mixing jet nozzle based on water cavity acceleration. The outer mixing jet nozzle based on water cavity acceleration comprises a current stabilizing pipe positioned in a high-pressure water main pipe; the current stabilizing pipe is fixedly connected with a mixing base; the mixing base is fixedly connected with a welding pipe welded on the high-pressure water main pipe; the welding pipe is fixedly connected with a connecting nut; the mixing base is positioned in the connecting nut; a shrinkage pipe and a high-pressure nozzle are arranged in the mixing base in sequence; the shrinkage pipe is matched with the high-pressure nozzle through the lower end part of a conical table; an annular channel is formed in the inner wall of the connecting nut; the connecting nut is provided with an abrasive pulp inlet communicating with the annular channel; and multiple abrasive pulp channels communicating with the annular channel are peripherally distributed in the mixing base. The current stabilizing treatment is performed for disordered high-pressure water through the current stabilizing pipe; and then, high-pressure water currents are accelerated through pressurization by multiple conical transition sections, so that abrasive pulp is accelerated through the abrasive pulp channels, the jet speed is accelerated, and the mixing of the abrasive pulp and the high-pressure water is more uniform.

Description

technical field [0001] The invention relates to an accelerated external mixing jet nozzle based on a water chamber, and belongs to the technical field of high-pressure water jets. Background technique [0002] Abrasive water jet technology has been used in the cold descaling of rolled steel strips, replacing the traditional cold steel surface pickling, which has the advantages of environmental protection and pollution-free. At present, abrasive water jet descaling generally adopts the post-mixing technology of abrasive slurry and high-pressure water, but the structure design of the nozzle has the problems of large energy loss and serious wear, the nozzle needs to be replaced frequently, and the operation and maintenance cost is high. [0003] For the above problems, the present invention proposes a new nozzle structure, which optimizes the structure of the high-pressure water chamber. The high-pressure water is stabilized and accelerated to reduce energy loss; it is mixed wi...

AI Technical Summary

Problems solved by technology

At present, abrasive water jet descaling generally adopts the post-mixing technology of abrasive slurry and high-pressure water, but the structure design of the nozzle has the problems of large energy loss and serious wear, the nozzle needs to be replaced frequently, and the operation and maintenance cost is high

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