The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2020
Filed:
Dec. 18, 2015
Applicant:
Kubota Corporation, Osaka, JP;
Inventors:
Takashi Tamura, Amagasaki, JP;
Ryuji Higashi, Amagasaki, JP;
Assignee:
Kubota Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 21/01 (2006.01); B01D 21/30 (2006.01); B01F 15/00 (2006.01); B01F 15/02 (2006.01); B01F 7/00 (2006.01); C02F 11/14 (2019.01); B01F 3/12 (2006.01); B01F 7/16 (2006.01); B01F 7/22 (2006.01); B01F 7/18 (2006.01); C02F 1/52 (2006.01);
U.S. Cl.
CPC ...
B01F 15/00389 (2013.01); B01D 21/01 (2013.01); B01D 21/30 (2013.01); B01F 3/1221 (2013.01); B01F 7/00383 (2013.01); B01F 7/166 (2013.01); B01F 7/169 (2013.01); B01F 7/18 (2013.01); B01F 7/22 (2013.01); B01F 15/00149 (2013.01); B01F 15/00201 (2013.01); B01F 15/0243 (2013.01); C02F 1/5209 (2013.01); C02F 11/14 (2013.01); B01F 2215/0052 (2013.01); B01F 2215/0431 (2013.01); C02F 2209/40 (2013.01);
Abstract
In a rapid stirrer that stirs sludge and a flocculant in a tank with a stirring blade, the rotation speed of the stirring blade is increased at a set rate with an increase in the amount of charged sludge, the rotation speed of the stirring blade is reduced at the set rate with a decrease in the amount of charged sludge, and flocculated flocs having a fixed floc diameter are stably generated even when operating conditions change so as to fluctuate the amount of charged sludge.