GB1351246A - Method of and apparatus for the milling of soaps and similar products - Google Patents

Abstract

1351246 Extruding soap COSTRUZIONI MECCANICHE G MAZZONI SpA 19 April 1971 [14 March 1970] 23526/71 Heading B5A [Also in Divisions B1 B2 and F2] Heated soap is homogenized by delivery, from a single or twin screw extruder 25, under pressure into the adjustable nip of a cooled roll pair 1, 2, one whereof rotates at a faster peripheral speed than the other. In the Fig. 1 embodiment, the soap is extruded through an apertured plate 11<SP>111</SP> into a tapering chamber discharging, through an outlet 30 under pressure, into the nip to which the outlet is sealed by adjustable resilient blades 17, 18. The soap adheres mainly to the faster rotating roll 9, from which it is scraped and rolled by an adjustable knife 9, for removal on a conveyer belt together with any soap removed from roll 2 by a similar knife 10. The chamber 11 is hingedly connected, at tie rods 26, to the extrusion apparatus, and by tie rods 27, 28 (which also act to clamp the outlet 30) to angle bars 19, 20 of a roll supporting structure including similar bars 21, 22 connecting to side plates 23, 24, the arrangement facilitating disassembly for cleaning, bearings 6, 6<SP>1</SP> of roll 2 are eccentrically mounted in the plates 23, 24, for rotation thereof from hand wheels, via worm and wheel means 5, 5<SP>1</SP>, to adjust the roll nip. The plate 23 carries an oil bath lubricated gear-box 31, driven by a belt drive 3 from a motor M, with the differential roll speeds being effected, via interengaging roll gears 4, 34<SP>1</SP> having different numbers of teeth. The rolls are each cooled by water circulating through helical channels 33, between an inlet connection 7 and an exhaust 8 to a drain box 32. The chamber 11 is heated adjacent the die outlet 30 by an exterior jacket 12, through which steam or hot water may be circulated, or in which electrical resistance heating of oil is regulated by a thermostat 13. The chamber 11 is also provided with a pressure gauge 14 which acts, via electrical contacts, to stop and restart the extruder at predetermined pressure levels, and with a pressure rupture disc 15. In the Fig. 3 embodiment (not printed), the extruder delivers through a tapering chamber to an outlet comprising a slit, or a plurality of round, square, or rectangular orifices, discharging in spaced relationship from the nip along an open top channel extending between a die support and the surface of the lower roll.