Metering doing the fluidization possible bulk cargo in gravimetric analysis expression, it sucks into pneumatic expression and conveys the device

摘要

PROBLEM TO BE SOLVED: To provide an apparatus by which a fluidizable bulk cargo can be metered with high accuracy even under a suctioned conveyance condition. ;SOLUTION: A pressure gage 4 is installed behind a fluidization device 2 in the direction of a flow. The pressure gage 4 and a regulating valve 10 are connected via a first adjusting circuit 7. The supply of pressure air to the fluidization device is metered by the first adjusting circuit in such a way that a set negative pressure which can be selected in advance every time is generated in the fluidization device. A mass-flow measuring device 5 and a size-adjustable opening 3 are connected via a second adjusting circuit 6. Then, the size of the opening 3 which can be adjusted by the second adjusting circuit is adjusted in such a way that a bulk cargo in a prescribed amount advances into the fluidization device 2.;COPYRIGHT: (C)2000,JPO