| 摘要 |
<p>1,251,043. Chocolate. WIENER & CO. N.V. 11 Oct., 1968 [26 Jan., 1968], No. 4275/ 68. Heading A2B. [Also in Divisions B1 and B2] Constituents in a chocolate material are cyclically mixed and comminuted. The material is first premixed and then comminuted in a stirrer type ball mill. Sugar, cocoa beans/liquor milk powder and cocoa butter are premixed at 22, Fig. 4, pumped at 23 to mixer vessels 24 or 25 where they are aerated, and pumps 26, 33 deliver the material to a mill 29. Aeration is effected by spreading the material over a spinning member 7, Fig. 5, so that it forms a film and feeding heated and/or irradiated air via a duct 8 on to the film. The mill is charged with alloy steel or ceramic balls of 1/4" to 3/8" diameter, which are retained by a mesh screen. The mixing and/or grinding vessels and pipe lines may be jacketted for heating or cooling. The mixer comprises a shaft 40, Fig. 5, carrying arms 42 and radial agitator members 43 which present an edge 44 to the material. A further vertical agitator 46 is on the other side of the shaft and stirrer shaft 40 carries a screw 47 which is rotated by gearing in a radial arm 48 and produces vertical movement of the material. A second form of mixer includes a spiral scraper 49 and gear box arm 50, Fig. 6. A surface-tension controlling agent, e.g. lecithin may be introduced by a metering valve.</p> |
