FIELD: mining.
SUBSTANCE: invention refers to mining and is designed for hydraulic fragmentation of rocks. The purpose of the invention is to increase efficiency of the device operation as well as to create more compact fluid jet and increase its dynamic pressure. To achieve this purpose an accelerating channel of the fluid jet creating device is made as toroidal chamber forming internal rotating current. The forming surface of the chamber is located between and input and output channels and is perpendicular to the direction of main current motion. The input aperture of the toroidal chamber is oriented towards the input channel. The axes of the input and output channels are aligned with the geometrical axis of the toroidal chamber and of the rotating current.
EFFECT: reduction of current turbulence and increase of jet hydrodynamic pressure.
3 dwg
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