ORE AND ROCK CHUTE Russian patent published in 1995 - IPC

FIELD: mining equipment. SUBSTANCE: ore and rock chute has the upraise 1, closed by a screen grid. The vibration feeder 3 is mounted in mouth of the upraise 1, whose walls are fastened by the timber 8. In a space behind the timber the pipeline 9 with the branch pipes 10, inclined one to another by an angle 90-120 degrees, is arranged. The annular guides 7 are mounted on the timber 8, the guides 7 support working members in the form of cylindrical shells 4, mounted in movable supports 6. The guiding blades 5 are rigidly secured to an outer surface of the shells 4. A number of the branch pipes 10 is equal to a number of the shells 4. Upon feeding a compressed air or a pressurized water from the pipeline 9, the shells 4 are being turned, causing breaking of mountain rock in the ore and rock chute. EFFECT: enhanced reliability of chute due to elimination of bridge-over. 1 cl, 6 dwg