Apparatus for continuously measuring flow rate of fine material

Conveyors: fluid current – With means to control conveying fluid or movement of load in... – Control of conveying fluid

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406124, 406146, B65G 5366

Patent

active

044900775

ABSTRACT:
An apparatus for continuously measuring the flow rate of a fine material flowing through a transport pipe, which comprises: an integrator for integrating calculated values of the flow rate of a fine material flowing through a transport pipe, obtained by a flow rate calculating means; a correction controller, said correction controller being adapted to calculate the total weight of the fine material fed during a prescribed period of time while the fine material in a hopper is only decreasing in amount from said hopper into said transport pipe, on the basis of a measured value of the weight of the fine material in said hopper, and to actuate said integrator during said prescribed period of time; a divider for calculating the correction coefficient "k", i.e., the ratio (W/S) of a calculated value (W) obtained by said correction controller to an integrated value (S) obtained by said integrator; and a multiplier for calculating a corrected value of the flow rate of the fine material flowing through said transport pipe, by multiplying said calculated value obtained by said flow rate calculating means with said correction coefficient "k".

REFERENCES:
patent: 3230016 (1966-01-01), Gilbert et al.
patent: 3479093 (1969-11-01), Hale
patent: 3636763 (1972-01-01), Beck
patent: 4082513 (1978-04-01), Andon et al.

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