Nec Corporation

Co-op Chemical Co., Ltd.

Hanaoka Sharyo Co., Ltd.

Hiroshi Hanaoka

Kazutoyo Kawashima

A granulation water control apparatus for a granulating machine used in a granular fertilizer production process and its granulation water control method. A particle size weight distribution of a semi-fabricated fertilizer discharged from the granulating machine is calculated, and a central particle size of the particle size weight distribution is calculated. The calculated central particle size and a previously set target central particle size are compared, and if they do not agree, a quantity of the granulation water to be charged into the granulating machine is calculated in accordance with a difference between the calculated central particle size and the target central particle size and the past statistical data.

Granulation water control apparatus for granulating machine used in

An automatic loading amount control apparatus for a granular compound fertilizer material includes a grain size distribution measurement module, a control module, a control table, and a material loading amount control module. The grain size distribution measurement module and the control module periodically measure the weight-converted grain size distribution of a formed granular compound fertilizer and calculate a center grain size and a yield on the basis of the measured grain size distribution. The control table holds the maximum yield of the granular compound fertilizer and a center grain size providing the maximum yield. The control module updates the maximum yield and the center grain size held in the table on the basis of the center grain size and the yield calculated by the grain size distribution measurement module. The material loading amount control module changes the water content of a material to be loaded such that the center grain size of the weight-converted grain size distribution of the formed granular compound fertilizer is equal to the center grain size held in the table.

Automatic loading amount control apparatus for granular compound

A cart having a frame, front and rear wheels, and a handle. A pair of elevating link mechanisms are mounted on the frame, each comprising a pair of arms pivotally connected to each other at intermediate positions thereof, rollers are provided on both ends of each of the arms, lower rollers are mounted on rails provided on the frame. A carrier is engaged with upper rollers of the link mechanisms by guide rails. A hydraulic jack is vertically provided on the frame, a ram of the jack engages with a ram receiver supported on two corresponding arms at lower portions thereof and rotatable about lateral axis. A pump is provided for supplying liquid to said hydraulic jack. The elevating link mechanisms are extended by projecting the ram of the jack for elevating the carrier.

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Tokyo, Japan

Hiroshi Hanaoka