Twin-screw extruder having respective conical nose screw sections
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-047/40
출원번호
US-0298863
(1989-01-17)
발명자
/ 주소
Wenger LaVon G. (Sabetha KS) Hauck Bobbie W. (Sabetha KS) Hartter Timothy R. (Sabetha KS)
출원인 / 주소
Wenger Manufacturing, Inc. (Sabetha KS 02)
인용정보
피인용 횟수 :
53인용 특허 :
7
초록▼
A twin screw extruder which significantly reduces extruder wear through provision of separate, complemental, interfitted frustoconical screw and barrel sections adjacent the outlet end of the extruder barrel which create an even, bearing-type support for the rotating screws as material passes throug
A twin screw extruder which significantly reduces extruder wear through provision of separate, complemental, interfitted frustoconical screw and barrel sections adjacent the outlet end of the extruder barrel which create an even, bearing-type support for the rotating screws as material passes through the apparatus. In preferred forms, the screws are intermeshed along the majority of the extruder barrel, but diverge at the region of the final frustoconical screw sections and are received within respective complemental barrel sections; in this fashion the material being processed is split into juxtaposed, non-communicating streams, and thereby evenly flows around and supports the adjacent screw section to lessen the tendency of the screws to separate themselves and come into wearing contact with the surrounding barrel walls. The extruder can be used to process a wide variety of plant-derived materials, but is particularly useful for viscous substances (e.g., soy concentrates and isolates) which can be difficult to handle with mono-screw extruders.
대표청구항▼
An extruder, comprising: an elongated barrel presenting an inlet end and an outlet end, a material inlet adjacent said inlet end thereof and a pair of separate, generally tubular, juxtaposed head sections proximal to said outlet end of the barrel and defining respective chambers separated by a centr
An extruder, comprising: an elongated barrel presenting an inlet end and an outlet end, a material inlet adjacent said inlet end thereof and a pair of separate, generally tubular, juxtaposed head sections proximal to said outlet end of the barrel and defining respective chambers separated by a central wall, each of said outlet end head sections being of decreasing cross-sectional area along the length thereof, said outlet end head sections serving to divide and receive material passing through said barrel, said elongated barrel having an outer surface that is imperforate between the outlet end head section and the outlet end of the barrel; a pair of elongated, juxtaposed, axially rotatable flighted screws positioned within said barrel for moving material therethrough, each of said screws including an elongated, flighted, generally frustoconical outlet end screw section of decreasing cross-sectional area along the length of the outlet end screw section which is substantially complemental with a corresponding one of said outlet end sections, each of said outlet end screw sections having a rearward margin and a forward margin, the length of each of said outlet end screw sections being greater than he greatest diameter of the outlet end screw section, each of said outlet end screw sections having a peripheral helical flighting portion extending forwardly from said rearward margin of the outlet end screw section, each of said flighting portions intermeshing with the flighting portion of the other outlet end screw section by a predetermined depth of intermesh which progressively decreases the flighting portions extending forwardly from the rearward margins of said end screw sections until the flighting portions completely separate from each other at a point spaced rearwardly from said outlet end of said barrel, each of said outlet end screw sections extending into and being substantially complementally received by a corresponding outlet end head section for providing a bearing-type support for each of said flighted screws by virtue of passage of material into and through said head sections, and into surrounding relationship to the outlet end screw sections, during operation of said extruder; restricted orifice die structure; and means mounting said die structure adjacent the outlet end of said barrel and in a spaced apart relationship to the forward margins of said outlet end section, the spacing between said outlet end section forward margins and said die structure being less than the length of one of said generally frustoconical outlet end sections.
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이 특허에 인용된 특허 (7)
McCulloch Michael G. (Northridge CA), Apparatus for incorporating additives in extruded foods.
Wenger La Von G. (Sabetha KS) Clark Douglas S. (Sabetha KS) Hauck Bobbie W. (Sabetha KS), High-output method for producing dense, uniformly layered meat analogue product.
Ivanov, George K.; Arastoopour, Hamid; Bilgili, Ecevit; Shahidi, Nima; Bernstein, Barry, Apparatus and process for pulverization of a polymeric material.
Cabrales, Lynda; MacBride, Maurine Anne; Thuerk, Jeremy Alan; Morin, Paul Gerard, Method and apparatus for continuous processing of whole muscle meat products.
Gordon R. Huber ; Bradley S. Strahm ; Brian S. Plattner ; Douglas D. Renyer ; Robert D. Sunderland, Method and apparatus for producing a pre-gelled starch product and normally sticky extrudates with minimal or no surfactant.
Gordon R. Huber ; Bradley S. Strahm ; Brian S. Plattner ; Douglas D. Renyer ; Robert D. Sunderland, Method and apparatus for producing a pre-gelled starch product and normally sticky extrudates with minimal or no surfactant.
Gordon R. Huber ; Bradley S. Strahm ; Brian S. Plattner ; Douglas D. Renyer ; Robert D. Sunderland, Method and apparatus for producing a pre-gelled starch product and normally sticky extrudates with minimal or no surfactant.
Huber Gordon R. ; Strahm Bradley S. ; Plattner Brian S. ; Renyer Douglas D. ; Sunderland Robert D., Method and apparatus for producing a pre-gelled starch product and normally sticky extrudates with minimal or no surfactant.
Wenger, LaVon; Wenger, Marc; Rokey, Galen J.; Spellmeier, Allan C., Method and apparatus for producing fully cooked extrudates with significantly reduced specific mechanical energy inputs.
Furgiuele, Naomi; Torkelson, John M.; Khait, Klementina, Processes of mixing, compatibilizing, and/or recycling blends of polymer materials through solid state shear pulverization, and products by such processes.
Naomi Furgiuele ; John M. Torkelson ; Klementina Khait, Processes of mixing, compatibilizing, and/or recylcing blends of polymer materials through solid state shear pulverization, and products by such processes.
Khait Klementina, Reconstituted polymeric materials derived from post-consumer waste, industrial scrap and virgin resins made by solid state shear pulverization.
Triboulet Carlo,ITX ; Prigent Madeleine,FRX ; Ducatel Francoise,FRX, Recycling process of a cross-linked polymeric material, in particular from electric cable coating materials.
Yamaguchi, Kazuo; Yamane, Yasuaki; Yoshimura, Shoji, Screw for extruder, bearing segment used in the same and twin screw extruder provided with screw for extruder.
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