LOOSE MATERIAL PROPORTIONER Russian patent published in 2000 - IPC

FIELD: preparation of loose material mixtures. SUBSTANCE: proposed device has perforated pipe; number of perforations changes lengthwise. Pipe is mounted in supports and is connected with gear of drive. Inlet end of pipe is closed by wall having central hole receiving the feeder branch pipe at spaced relation. Diaphragm is fitted on opposite end of pipe. Sectionalized sampler is mounted under pipe. Supports, feeder and drive are mounted on frame secured on base by means of hinge. Opposite end of frame is provided with screw stop engageable with base. Perforated shells fitted on perforated pipe are turnable relative to axis of pipe. Each shell shuts off one row of perforations of pipe. EFFECT: increased productivity; possibility of control of productivity. 5 cl, 7 dwg