GEAR FOR METERING OUT OF LOOSE AND DIFFICULT TO POUR MATERIALS Russian patent published in 1994 - IPC

FIELD: gear for metering. SUBSTANCE: metered-out material is transported from hopper in the form of upper part of pipe installed vertically where it is stirred with conical spiral to user with the use of screw. Screw is manufactured in the form of one turn with overlapping of lower radial butt with additional section in the form of Archimedean spiral. Overlapping angle does not exceed angle of natural slope. Sharpened circumference edge of additional section cuts fibre inclusions of metered out material. EFFECT: reduced energy consumption thanks to prevention of jamming of material. 2 dwg