Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1983-06-20
1987-08-11
Fisher, Richard V.
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 24, B08B 302, B08B 908
Patent
active
046859748
ABSTRACT:
A method suitable for removing settled sludge from the bottom of a storage tank uses a machine (1) including a central body (15) rotatable about which is a casing (2, 3) provided with two substantially diametric nozzles (4, 5) arranged so that liquid emerging therefrom sweeps substantially only in one plane, a turbine (12) rotating the casing about the central body (15) and half cylinder (18) ensuring that when the casing (2, 3) is continuously rotated, alternately one nozzle is closed for substantially 180.degree. rotation while the other nozzle is open. Such machines may be suspended above the floor of the tank adjacent to a wall thereof. Liquid is emitted from the nozzles in a sweep substantially parallel to the bottom plane of the storage tank, thereby resuspending the sludge which thereafter is withdrawn as a suspension.
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Furness John A.
Haggerty John
Butterworth Systems Inc.
Fisher Richard V.
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