(19)
(11) EP 0 101 255 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.07.1984 Bulletin 1984/30

(43) Date of publication A2:
22.02.1984 Bulletin 1984/08

(21) Application number: 83304499

(22) Date of filing: 04.08.1983
(84) Designated Contracting States:
DE FR IT

(30) Priority: 05.08.1982 GB 8222636

(71) Applicant: CROKER LIMITED
 ()

(72) Inventors:
  • Pugh, Stuart
     ()
  • Preston, Michael Edward
     ()

   


(54) Improvements in mixing machines


(57) A mixing machine comprises a dished circular rotary platform (a) that is smoothly curved towards an upwardly and outwardly inclined rim, and a stationary wall (c) that closely surrounds and extends upwardly from the rim of the rotary platform and defines on its inner face a concave part toroidal surface. The rim of the rotary platform (a) is tangential to the part toroidal surface so that as the platform (a) rotates materials to be mixed are flung outwards and upwards by the platform against the part-toroidal surface which guides the materials along and confines them in a toroidal circulation path. Thereby the materials are formed into and mixed together in a moving toroidal mass extending around the platform without build-up of an unacceptable layer of incompletely mixed material at the stator wall, with a minimum of particle damage and with minimum energy consumption.






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