AUTOMATIC PARTICLE SIZE CONTROL METHOD IN PULP FLOW Russian patent published in 2015 - IPC G01N15/02 

FIELD: electricity.

SUBSTANCE: automatic particle size control method in pulp flow includes periodical sensing of material particles by micrometer-type probe with conversion of particle size detected by the sensing mechanism into electric signal proportional to their full size. At that program controlling is used for the sensing mechanism drive in order to ensure stabilising of reciprocation cycle duration for the sensing mechanism and synchronising position of micrometer-type probe at the measurement moment with polling cycle of the computing device that requests value of electrical signal. At that sensing of particles is carried out by a multi-element micrometer-type probe containing n independent sensing elements, which ensure simultaneous sensing of n particles and conversion of the measured particle sizes into n electric signals proportional to their full sizes.

EFFECT: improved reliability and accuracy of grain-size composition measurement in pulp flow due to elimination of variation of the power mains parameters and speeding-up of measurement process.

3 dwg