Apparatus for controlling the proportion of liquid and dry parti

Details Apparatus for controlling the proportion of liquid and dry parti Apparatus for controlling the proportion of liquid and dry parti

1981-02-06

1982-05-18

Hall, James R.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

425145, 425222, 264 404, 264117, B28B 1700

Patent

active

043302467

ABSTRACT:
An apparatus is provided for controlling the amount of dry particulate matter and liquid added to a rotary pelletizer. A transducer placed within the pelletizer senses a characteristic of the mixed material in the pelletizer. This characteristic may be, for example, the level of the batch or the size of the pellets produced. The transducer signal is then conditioned to provide a modified signal level corresponding to a desired characteristic level and which varies about that level corresponding, for example, to the variations of pellet size about its desired size. The modifier contains two stages which may be used independently with the other stage being used as a straight through one to one amplifier. The two stages may also be used cooperatively to provide an intermediate signal. The intermediate signal can be used to operate a display device and as the input to a second amplifier. The second amplifier then provides a conditioned signal input into a larger control system.

REFERENCES:
patent: 3056162 (1962-10-01), Fisher
patent: 3071803 (1963-01-01), Austin
patent: 3883281 (1975-05-01), Holley
patent: 4091060 (1978-05-01), Carter et al.
patent: 4131668 (1978-12-01), Sasaki et al.

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