Dual flow channel gathering type paraxial powder conveying feeding nozzle

Abstract

A dual flow channel gathering type paraxial powder conveying feeding nozzle comprises a top plate, a wedge-shaped plate and a bottom plate which are sequentially horizontally overlapped from top to bottom and are mutually fixed, wherein a main flow channel is arranged at large head end of the wedge-shaped plate, and an inlet end of the main flow channel exposes from the side surface of the wedge-shaped plate to form a main inlet; an upper flow channel which extends along the top surface of the wedge-shaped plate is arranged between the top plate and the wedge-shaped plate; a lower flow channel which extends along the bottom surface of the wedge-shaped plate is arranged between the bottom plate and the wedge-shaped plate; the near end of the upper flow channel communicates with an outlet end of the main flow channel through a first flow distributing channel; the near end of the lower flow channel communicates with the outlet end of the main flow channel through a second flow distributing channel; a far end of the upper flow channel extends to the surface of a small head end of the wedge-shaped plate to form an upper flow channel outlet; the far end of the lower flow channel extends to the surface of the small head end of the wedge-shaped plate to form a lower flow channel outlet.

Description

technical field [0001] The invention relates to a nozzle, in particular to a double-channel converging side-axis powder feeding nozzle. Background technique [0002] As a green and cutting-edge technology, laser remanufacturing has produced significant economic benefits and good social benefits in the repair of large-scale engineering equipment and the remanufacturing of important components. At present, the method of synchronous powder feeding laser cladding is widely used in the laser remanufacturing process. According to the nozzle structure and the relative position between the nozzle and the laser beam, the synchronous powder feeding method is divided into coaxial powder feeding and side-axis side powder feeding. The nozzle structure is called coaxial powder feeding nozzle and lateral powder feeding nozzle respectively. Among them, coaxial powder feeding can meet the manufacturing of complex parts, and has strong adaptability. Scholars at home and abroad have also cond...

AI Technical Summary

Problems solved by technology

For the gas-solid two-phase jet, the inertial force of the particles still plays a dominant role, however, the process of mutual attraction and convergence between the two-jet carrier gas will also produce a drag force on the powder particles, so that the powder particles will generate acceleration toward the middle , the tendency of the powder to diverge to the outside is suppressed, and the aggregation of the powder will be improved

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