Submerged scraper conveyor automatic speed control

Details Submerged scraper conveyor automatic speed control Submerged scraper conveyor automatic speed control

1983-04-18

1985-08-06

Shoop, Jr., William M.

Electricity: motive power systems

With particular motor-driven load device

Tension-maintaining type of motor-control system

318301, 110330, 209923, F23H 1124

Patent

active

045338566

ABSTRACT:
In a submerged scraper conveyor (10), an automatic voltage control system controls the speed of variable speed drive (32), in turn the speed of follower sprocket (22) and in turn the speed of drag chain (16) as a function of the torque on the headshaft (21). The tension on endless roller chain (36) is monitored by load cell (40) as indicative of the torque on the headshaft (21) and a standard process control signal is generated therefrom. The speed of variable speed drive (32) is varied as a function of the measured torque between a lower speed drive limit and an upper speed drive limit.

REFERENCES:
patent: 3188841 (1965-06-01), Wallace
patent: 3221237 (1965-11-01), Kalenian
patent: 3318547 (1967-05-01), Bejach
patent: 3348107 (1967-10-01), Hamby
patent: 3671953 (1972-06-01), Goldberg
patent: 3734426 (1973-05-01), Howes et al.
patent: 3886417 (1975-05-01), Niwa
patent: 4008386 (1977-02-01), Ross
patent: 4126817 (1978-11-01), Luzio
patent: 4347993 (1982-09-01), Leonard
patent: 4358821 (1982-11-01), Niemi

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