CA2216536A1 - Screw compressor and outlet portion for screw compressor - Google Patents

Screw compressor and outlet portion for screw compressor

Info

Publication number
CA2216536A1
CA2216536A1 CA002216536A CA2216536A CA2216536A1 CA 2216536 A1 CA2216536 A1 CA 2216536A1 CA 002216536 A CA002216536 A CA 002216536A CA 2216536 A CA2216536 A CA 2216536A CA 2216536 A1 CA2216536 A1 CA 2216536A1
Authority
CA
Canada
Prior art keywords
screw
bulk material
diameter
core
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002216536A
Other languages
French (fr)
Other versions
CA2216536C (en
Inventor
Ulf Nordin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mastec Stalvall AB
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from SE9501118A external-priority patent/SE511495C2/en
Application filed by Individual filed Critical Individual
Publication of CA2216536A1 publication Critical patent/CA2216536A1/en
Application granted granted Critical
Publication of CA2216536C publication Critical patent/CA2216536C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B30B9/121—Screw constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention relates to a conical screw press for compressing and/or for removing liquid from bulk material, comprising a screw with screw thread and core in a housing, means for rotating the screw in the housing, an inlet opening for the bulk material from which liquid is to be removed, an outlet opening for the bulk material from which liquid has been removed, and at least one outlet opening for the liquid which has been extracted. The characteristic features of the invention are that: a) the screw (1) is dimensioned, within at least the greater portion of the length of the screw between the inlet opening for bulk material and the outlet opening for bulk material, such that the external diameter (D) of the screw thread and the diameter (d) of the screw core change axially in the screw press from a first arbitrary axial position, where the external diameter of the screw thread=D1 and the diameter of the screw core=d1, to an arbitrary second axial position, situated downstream in the direction of the bulk material where the external diameter of the screw thread=D2 and the diameter of the screw core=d2, in accordance with the formulae (I) and (II) where K is a compression ratio, i.e. the volume of the bulk material at the first position in relation to the volume of the bulk material at the second position, and n is a number between 2.5 and 3.5; and b) the angle a of the screw threads in relation to a plane at right angles to the screw shank varies by at most 20 % in either direction from a constant angle in relation to the said plane within the said portion of the length of the screw.
CA002216536A 1995-03-29 1996-03-11 Screw compressor and outlet portion for screw compressor Expired - Fee Related CA2216536C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9501118-5 1995-03-29
SE9501118A SE511495C2 (en) 1995-03-29 1995-03-29 Tapered screw press
PCT/SE1996/000313 WO1996030198A1 (en) 1995-03-29 1996-03-11 Screw compressor and outlet portion for screw compressor

Publications (2)

Publication Number Publication Date
CA2216536A1 true CA2216536A1 (en) 1996-10-03
CA2216536C CA2216536C (en) 2006-10-31

Family

ID=37395797

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002216536A Expired - Fee Related CA2216536C (en) 1995-03-29 1996-03-11 Screw compressor and outlet portion for screw compressor

Country Status (1)

Country Link
CA (1) CA2216536C (en)

Also Published As

Publication number Publication date
CA2216536C (en) 2006-10-31

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed