Patent ID: 11858757
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 6:
7. The control device according to claim 1, wherein
the granular material supply system further includes an aeration line that is connected to a lower portion of the tank and sends, to the tank, a gas for fluidizing the granular material stored in the tank, an aeration gas flow rate control valve provided in the aeration line, and a cutout line flow rate control valve provided in the cutout line,
the density control unit controls an opening degree of the aeration gas flow rate control valve so that an estimated value of the density of the granular material on the downstream side of the junction calculated based on a flow rate of the granular material flowing through the cutout line, a flow rate of a gas flowing through the cutout line, and a flow rate of a carrier gas flowing through the carrier line on the upstream side of the junction coincides with the set value, and
the flow rate control unit controls an opening degree of the cutout line flow rate control valve so that a supply flow rate to the carrier destination of the granular material estimated based on a flow rate of the granular material flowing through the cutout line, the flow rate of the gas flowing through the cutout line, the flow rate of the carrier gas flowing through the carrier line on the upstream side of the junction, and a set value of the density coincides with the command value.