PERIODICAL-ACTION BUTTER CHURN Russian patent published in 1996 - IPC

FIELD: food industry. SUBSTANCE: butter churn has cylindrical tank installed horizontally for rotation and furnished with cover and two pairs of curved blades secured inside. Blades are made in form of members pointed with inner side towards each other in each pair. Each blade consists of three parts, two of which are made in form of different size wedges mating at angle of 120-150 degrees so that point of smaller wedge is arranged at base of larger wedge. Base of wedge is 1/4-1/5 and 1/2-1/3 of tank radius, respectively. Third part is essentially flange made at larger wedge base, its height being 1/10 of tank length. Flange mates with wedge at angle of 155-165 degrees, angle between lines of conjugation of three parts is 72-78 degrees. Each blade is secured through its smaller wedge on cylindrical surface at angle of 8-20 degrees relative to generating line. Flange of blade is secured on end face surface over its radius. Length of each blade is 0.4-0.6 of axial length of drum. EFFECT: enhanced operation reliability. 9 dwg