A - Human Necessities – 23 – P
Patent
A - Human Necessities
23
P
A23P 1/12 (2006.01) A21C 11/20 (2006.01) A23N 17/02 (2006.01)
Patent
CA 2693980
Improved single screw extruders systems (40) are provided including a single screw extruder (42, 92) as well as an upstream preconditioner (44). The extruders (42, 92) include a single, internal, elongated, helically flighted, axially rotatable screw assembly (52) having one or more improved screw sections (74, 74a, 76). The screw sections (74, 74a, 76) include specially configured flighting (86) wherein adjacent flighting portions (86a, 86b) have smoothly arcuate surfaces (88) extending between the respective flighting portion peripheries (90a, 90b). This flighting design provides smooth, substantially surge-free operation while increasing SME and cook values. The preferred preconditioner (44) has independently controlled mixing shafts (106, 108) allowing the shafts (106, 108) to be rotated at different rotational speeds and/or directions.
L'invention concerne des systèmes d'extrudeuse à vis unique améliorés (40), comprenant une extrudeuse à vis unique (42, 92) de même qu'un dispositif de préconditionnement amont (44). Les extrudeuses (42, 92) comprennent un ensemble de vis axialement rotative, à filet hélicoïdal, allongé, interne, unique (52) ayant un ou plusieurs tronçons de vis améliorés (74, 74a, 76). Les sections de vis (74, 74a, 76) comprennent un filet configuré spécialement (86) où des parties de filet adjacentes (86a, 86b) ont des surfaces en arc lisse (88) s'étendant entre les périphéries des parties de filet respectives (90a, 90b). Cette conception de filet fournit un fonctionnement doux sensiblement sans à-coup tout en augmentant les valeurs SME et de cuisson. Le dispositif de préconditionnement préféré (44) a des arbres de mélange contrôlés indépendamment (106, 108) permettant aux arbres (106, 108) de tourner à des vitesses et/ou dans des directions de rotation différentes.
Gowling Lafleur Henderson Llp
Wenger Manufacturing Inc.
LandOfFree
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