RU95100885A - Centrifuge - Google Patents

Abstract

FIELD: devices for separation and dewatering of highly concentrated sewage water, for instance, manure and dung from animal houses. SUBSTANCE: centrifuge for separation and dewatering manure and dung has horizontal drum with screw which is made in the form of shaft with two vanes secured over spiral. Filtering centrifugal drum is made in the form of bar screen. Ratio of screw spiral pitch to diameter of its shaft exceeds 17.8, and drum length equals, at least, its two diameters. Gap value between inner surface of drum and outer edges of screw vanes equals two or three sizes of gap value between drum bars. Indicated above ratios ensure formation of optimal thickness of sludge on inner surface of drum, continuous separation and stable and reliable operation of centrifuge. EFFECT: higher efficiency. 1 dwg

Claims (1)

Usage: separation and dehydration of highly concentrated wastewater, for example, manure and litter coming from livestock buildings to treatment facilities. The inventive centrifuge for the separation and dehydration of manure and litter contains a horizontally mounted perforated drum with a screw, which is made of a shaft with two blades attached to it along a helical line. The filtering perforated drum is made in the form of a grate of grates. The ratio of the pitch of the helix of the screw to the diameter of its shaft exceeds 17.8, and the length of the drum is at least two of its diameters. The gap between the inner surface of the drum and the outer edges of the auger blades is from two to three sizes of the width of the gap between the grates of the drum. These ratios ensure the formation of the optimal thickness of the sediment on the inner surface of the drum, the continuity of the separation process and stable and reliable operation of the device.