Apparatus for ascertaining the level of flowable material in dus

Details Apparatus for ascertaining the level of flowable material in dus Apparatus for ascertaining the level of flowable material in dus

1986-05-29

1988-01-12

Rolla, Joseph J.

Dispensing

Automatic control

Involving conveying conduit jacket and/or inert atmosphere...

222 64, 222517, 200 6121, 200 83A, 414323, B67D 508, H01H 3500, H01H 3540

Patent

active

047185759

ABSTRACT:
The hoppers of several dust precipitators are connected to a common readily accessible monitoring station by discrete conduits each of which has a first open end at a preselected level in the respective hopper, a second open end at the monitoring station and an intermediate portion extending above the corresponding preselected level. Suction which normally prevails in the hoppers tends to maintain closed pivotable flaps for the second open ends of the conduits. If the dust in a hopper accumulates to or rises above the respective preselected level, the corresponding flap is opened by a counterweight and such movement of the flap entails the generation of a signal which is used to evacuate dust from the corresponding hopper and/or to actuate an alarm for the convenience and attention of the persons in charge.

REFERENCES:
patent: 1829807 (1931-11-01), McMurrin
patent: 2640977 (1953-06-01), Parisi
patent: 2719889 (1955-10-01), Miller
patent: 3734313 (1973-05-01), Gauthier et al.
patent: 3935970 (1976-02-01), Spaw
patent: 4118075 (1978-10-01), Lubbehusen
patent: 4201315 (1980-05-01), Chuss et al.
patent: 4522634 (1985-06-01), Frank
patent: 4527714 (1985-07-01), Bowman

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