DEVICE FOR THE JET BLOWING OFF THE SURFACE Russian patent published in 1995 - IPC

FIELD: chemical engineering. SUBSTANCE: device has coaxially located relative to each other intake reservoirs for abrasive material 1 and liquid 2, service tank 5, hydraulic system 4 and system for feeding the power carrier (pneumatic system) 3. The latter is connected with the intake bunkers and jet blower 14 by means of pipelines 11 and 13. Jet blower 14 is made in the shape of a sprayer of the spear-shaped type. The length of the rectilinear nozzle channel makes up not less than 100 mm. The correlation of the diameters of pipeline 13 of the pneumatic system and the nozzle channel is chosen equal to (1.5:1)- (10:1) including. The chambers of intake reservoirs 1 and 2 are in communication between themselves by means of hole 9 made in wall 8 which can also be made porous. The end of branch pipe 24 of hydraulic system 4 is located in the cavity of service tank 5 tangentially to its inner diameter and is made as nozzle 31 providing for the swirling of the flow of the fed liquid around outlet hole 6 of the bunker. Interior intake reservoir 1 can also be designed for containing the liquid in it. EFFECT: enhanced quality of the abrasive-jet processing. 5 cl, 2 dwg