B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
B07B 1/00 (2006.01) B07B 1/24 (2006.01) B07B 9/00 (2006.01) B07B 11/04 (2006.01) B07B 13/16 (2006.01) B07B 13/18 (2006.01)
Patent
CA 2083309
A grain processor for separating and measuring components of a sample of grain as it passes through a rotary sieve having two or more sieving sections having different perforations so that selective separation is made on the basis of the size of the particles in the sample. The separated particles in each of the sieving sections are passed through a densimetric column containing a stream of pressure-adjustable air generated by a blower, the air stream removing impurities from the separated grain or different density impurities which is channeled into a weighing hopper which measures the weight of the grain or impurities and registers the information in a unit provided with data processing and recording circuits, including microprocessor means. To control the movement of the air in the separating columns, the motor-driven rotary sieve and the motors coupled to the blowers are provided with tachometers which provide rotational speed pulses to rotation control circuits in the unit which, in turn, provides an input to motor controllers associated with the motors driving the fans and the rotary sieve. Each of the rotation control circuits is provided with a motor-driven potentiometer which has a rotor rotating together with an optical coded disc which provides an output to adjacently- positioned optical heads providing an input into the unit which registers the position of the potentiometer without requiring a reference reading. Alternatively, each of the rotation control circuits may use, in lieu of the motor-driven potentiometer, a solid-state electronic interface between the microprocessor means and the motors. The weighing hoppers and associated scales used in the grain processor are provided with lock-down devices for transit purposes.
Agricultural Quality Products Ltd.
Cassan Maclean
Seedburo Equipment Company
Trusa Inc.
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