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US 4,302,332 AGranted
Centrifugal thickener
AssigneeNishihara Environmental Sanitation Research Corporation Limited
InventorsNoboru Hayakawa, Akaru Furusato, Toshio Saito, Tastuyuki Iwai
Life of this patent
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Abstract
A centrifugal thickener comprising a truncated-cone shaped rotary barrel and a filter arranged along the inner surface of the rotary barrel, the rotary barrel having a vertical angle, of a truncated-cone shape formed by the internal surface thereof, of 40 to 80 degrees, the filter having a number of openings in size of 10 to 40 microns.
Claims13
A centrifugal thickener comprising:
- a. a substantially truncated-cone shaped hollow rotary body,
- a-1. said rotary body having plural liquid through holes which extend from an inner surface to an outer surface thereof,
- a-2. said rotary body having at its inner peripheral surface a vertical angle from 40 to 80 degrees,
- b. a drive mechanism for rotating said rotary body on an axis thereof,
- c. a filter arranged so as to be developed along the inner peripheral surface of said rotary body,
- c-1. said filter having a number of openings in size of 10 to 40 microns,
- d. a feed pipe for feeding sludge into said filter,
- e. a receptacle for receiving a liquid having passed through said filter, and
- f. a receptacle for receiving those liquids remaining on said filter when the former is released from said filter.
6 more elements
A centrifugal thickener comprising:
- a. a substantially truncated-cone shaped hollow rotary body,
- a-1. said rotary body having a plurality of liquid through holes which extend from an inner surface to an outer surface thereof,
- a-2. said rotary body having at its inner peripheral surface an angle with the vertical of 40 to 80 degrees,
- b. a drive mechanism for rotating said rotary body on an axis thereof,
- c. a filter arranged so as to be developed along the inner peripheral surface of said rotary body,
- c-1. said filter comprising a filter cloth having a number of openings in size of 10 to 40 microns,
- c-2. said filter having a plurality of mass adding means for stretching said filter resulting from displacement thereof outside by means of a centrifugal force acting during rotation thereof with said rotary body,
- d. a feed pipe for feeding sludge into said filter,
- e. a receptacle for receiving a liquid having passed through said filter, and
- f. a receptacle for receiving those liquids remaining on said filter when the former is released from said filter.
7 more elements
Dependencies are inferred from the claim text.