| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic metering device of master batch, the installation space of which is small and the metering of which can be done grain by grain. SOLUTION: This device is equipped with a hopper tank 1, in which a master batch m is stored, a material discharging pipe 7 communicating with the hopper tank 1, a metering rotor 2, on which suction holes 3 rotatably provided between the hopper tank 1 and the material discharging pipe and corresponding to the master batch are arrularly arranged, an air pressure distributingly controlling means, which distributingly supplies a sucking pressure and a discharging pressure to the suction holes 3 of the metering rotor and the counting means for counting the number of rotations of the metering rotor 2. With the rotation of the metering rotor 2, the air distributing controlling means gives the sucking pressure to the suction hole 3 in the hopper tank 1 and the discharging pressure to the suction hole 3 in the material discharging pipe 7, resulting in successively counting the master batch m stored in the hopper tank 1 grain by grain and discharging the grains in the material discharging pipe 7.
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