EP0571750A1 - Presse à vis - Google Patents

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Publication number
EP0571750A1
EP0571750A1 EP93105898A EP93105898A EP0571750A1 EP 0571750 A1 EP0571750 A1 EP 0571750A1 EP 93105898 A EP93105898 A EP 93105898A EP 93105898 A EP93105898 A EP 93105898A EP 0571750 A1 EP0571750 A1 EP 0571750A1
Authority
EP
European Patent Office
Prior art keywords
screw
conveying direction
screw press
throttle point
cam
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
EP93105898A
Other languages
German (de)
English (en)
Other versions
EP0571750B1 (fr
Inventor
B. Dipl.-Ing. Tydiks
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.)
Maschinenfabrik Reinartz GmbH and Co KG
Original Assignee
Maschinenfabrik Reinartz GmbH and Co KG
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
Application filed by Maschinenfabrik Reinartz GmbH and Co KG filed Critical Maschinenfabrik Reinartz GmbH and Co KG
Publication of EP0571750A1 publication Critical patent/EP0571750A1/fr
Application granted granted Critical
Publication of EP0571750B1 publication Critical patent/EP0571750B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the present invention relates to a screw press for pressing off liquids, in particular from oilseeds, with a screw and a liquid-permeable jacket surrounding the screw, in particular a colander, the screw shaft and the jacket forming a screw channel between them with a decreasing cross section in the conveying direction of the screw, and in the screw channel at least one throttle point for the zone-wise build-up of high pressure and in the conveying direction behind the throttle point a cross-sectional expansion for at least partial relief of the high pressure are provided.
  • the invention relates to a method for squeezing liquids, in particular from oilseeds by means of a screw press, in which the squeezing is carried out by subjecting the material to a pressure rising in the conveying direction of the screw, briefly compressing it strongly at at least one throttle point, then at least partially releasing it again and then compressed further.
  • Screw presses are used in various processes to remove liquids from a variety of materials such as oilseeds.
  • a screw press is known for example from DE-C-29 15 538.
  • This essentially includes a snail and a perforated shell surrounding it, for example a colander.
  • the shell and the worm or the worm shaft form a worm channel between them, which is in known tapered from the feed side in the conveying direction of the screw.
  • this takes place in several stages by increasing the diameter of the worm shaft from stage to stage, but keeping the inside diameter of the shell constant, so that the cross section of the worm channel is reduced.
  • a higher pressure is built up in the material cake to be conveyed and squeezed from stage to stage.
  • Throttling points are provided between the individual stages, in which a high pressure is built up in some areas, which pressure is then at least partially reduced again for the subsequent compression stage.
  • material is fed into the screw channel on the feed side via a filler neck.
  • the material is conveyed through the screw in the longitudinal direction of the screw channel, wherein it is compressed in several stages towards the outlet side, liquid is squeezed out of the material and is discharged to the outside through the openings in the lateral surface.
  • the throttling points which can be arranged between two stages as well as within one stage, the material cake is subjected to high compression over a very short distance.
  • the pressure is then at least partially reduced again by expanding the cross section again.
  • the initial cross-section of the stage following in the conveying direction is smaller than the screw cross-section at the end of the preceding stage. In the area of the choke point, no spiral surfaces are provided for conveying the cake.
  • Scraper fingers are provided in the individual compression stages, which protrude through the casing into the screw channel. With these scraper fingers, the cake is stripped from the screw shaft and also cut open in the longitudinal direction of the screw channel.
  • a screw press is known (DE-A-26 33 524), in which recesses are provided in those helical surfaces of the screw that are located near the filler neck. These are used to cut long-fiber material before it is compressed to make liquids.
  • the object of the present invention is now to provide a screw press for pressing liquids or a method for pressing liquids with which a higher efficiency can be achieved, i.e. more liquid can be squeezed out on the same length of press.
  • the task outlined above is achieved in the case of a screw press in that at least one cam is provided in the area of at least one of the existing throttle points in the screw channel and can be moved transversely to the conveying direction of the screw. Due to the movement of the cam transversely to the conveying direction of the screw, the material cake transported in the conveying direction of the screw is broken up or cut into relatively small pieces. In contrast to the known prior art, this cutting takes place in the area of the throttle point, ie in the area of high pressure or immediately afterwards. The parts then shoot into the subsequent relaxation zone, ie the area with a larger cross section. It has been shown that cutting the cake in this area can significantly improve the efficiency of a screw press.
  • cams in the area of the throttle point so that the material can be cut into smaller pieces.
  • These cams can be at one level with respect to the conveying direction. However, they can also be arranged offset to one another in the conveying direction.
  • the cams can advantageously be provided in the region of the greatest pressure of the respective throttle point, i.e. in the area where the cross-section of the screw channel is the smallest.
  • the cam or cams is or are arranged in a rotationally fixed manner on the worm shaft.
  • the cams are automatically rotated with the worm or worm shaft, so that a further device for actuating the cams is not necessary.
  • the problem underlying the invention is further achieved in a method for squeezing liquids in that the material in the area of the throttle point is broken up or cut open.
  • the breaking or cutting can take place in the area of the greatest pressure.
  • the screw press includes a screw (1) which is arranged within a casing (2) and can be rotated about its longitudinal axis in the casing.
  • the worm (1) is not made in one piece, but consists of a worm shaft (3) and a plurality of worm segments (4) which are arranged one behind the other in the axial direction of the worm shaft (3) and have helical helical surfaces (5).
  • the screw segments (4) are non-rotatably connected to the screw shaft (3).
  • a plurality of throttle points (7, 8, 9) are provided in the screw channel (6) at a distance from one another in the conveying direction.
  • the conveying cross section of the screw channel (6) is considerably reduced over a short distance, so that a high pressure is built up here.
  • Such a throttling point can be achieved by reducing the inside diameter of the casing (2), as shown in the left throttling point (7) in the drawing, or by increasing the outside diameter of the screw (1), as in the others Throttling points (8, 9) is shown.
  • the throttling points (8, 9) have the lowest in the area Conveying cross section on cams (10 ⁇ ), which are arranged at a distance from each other in the circumferential direction of a cam ring (11, 12) connected in a rotationally fixed manner to the worm shaft (3).
  • the cam rings (11, 12), like the screw segments (4), are connected in a rotationally fixed manner to the screw shaft (3), so that when the screw shaft (3) rotates, the cams (10 ⁇ ) are also rotated in the circumferential direction of the screw channel (6).
  • the conveying cross section of the screw channel (6) is widened before the conveying cross section is reduced again.
  • the cake moved in a straight line in the longitudinal direction of the screw channel (6) is cut into small pieces by the cams (10 ⁇ ) rotating with the throttle segment (8, 9).
  • the high pressure built up by the throttling points (8, 9) is then at least partially reduced again by widening the cross section, so that the cut cake breaks up into small pieces.
  • the cake is then compressed again for further pressing of liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Screw Conveyors (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Materials For Medical Uses (AREA)
EP93105898A 1992-05-26 1993-04-10 Presse à vis Expired - Lifetime EP0571750B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9207096U DE9207096U1 (de) 1992-05-26 1992-05-26 Schneckenpresse
DE9207096U 1992-05-26

Publications (2)

Publication Number Publication Date
EP0571750A1 true EP0571750A1 (fr) 1993-12-01
EP0571750B1 EP0571750B1 (fr) 1996-06-12

Family

ID=6879885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93105898A Expired - Lifetime EP0571750B1 (fr) 1992-05-26 1993-04-10 Presse à vis

Country Status (4)

Country Link
US (1) US5341730A (fr)
EP (1) EP0571750B1 (fr)
AT (1) ATE139181T1 (fr)
DE (2) DE9207096U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008001171A3 (fr) * 2006-06-27 2008-05-15 Wam Spa Vis d'archimède pour convoyeurs, compacteurs et autres
AT16471U1 (de) * 2017-08-22 2019-10-15 Voith Patent Gmbh Schneckenpresse

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001017642A2 (fr) * 1999-09-09 2001-03-15 Sucher & Holzer Bauplanungs- Und Handelsgesellschaft M.B.H. Procede permettant d'extraire des matieres a l'aide d'une extrudeuse
GB0306283D0 (en) * 2003-03-19 2003-04-23 Smet Rosedowns De Ltd Improvements to rendering presses
US7137759B1 (en) * 2005-12-30 2006-11-21 The Young Industries, Inc. System and method for handling bulk materials
AT506098B1 (de) * 2007-11-30 2011-04-15 Andritz Ag Maschf Schneckenwellenoberfläche

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111080A (en) * 1958-11-20 1963-11-19 French Oil Mill Machinery Screw press
FR2263884A1 (en) * 1974-03-15 1975-10-10 Laugier Alexandre Screw press to extract juice from fruit esp. grapes - uses single screw multi-stage controlled compression with interstage relief
FR2427194A1 (fr) * 1978-05-31 1979-12-28 Pb Gelatines Presse perfectionnee
EP0017809A1 (fr) * 1979-04-18 1980-10-29 Fried. Krupp Gesellschaft mit beschränkter Haftung Presse filtrante à vis et procédé pour l'extraction d'huile à partir de fruits et de graines oléagineux utilisant cette presse
DE3150766A1 (de) * 1980-12-09 1983-06-30 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover "auspress- und zerfaserungseinrichtung"

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE548411C (de) * 1932-04-15 Fried Krupp Grusonwerk Akt Ges Schneckenpresse fuer feuchtes Gut
US1297901A (en) * 1917-05-07 1919-03-18 James M Peerson Compound press.
BE460174A (fr) * 1945-05-24 1945-10-31
US3645200A (en) * 1970-02-09 1972-02-29 Du Pont Stock cutter for elastomer drying press
GB1498243A (en) * 1975-07-26 1978-01-18 Simon Rosedowns Ltd Screw presses
SU737240A1 (ru) * 1977-08-09 1980-05-30 Харьковский Ордена Ленина Политехнический Институт Им.В.И.Ленина Пресс дл отжима растительного масла
DE2751703A1 (de) * 1977-11-19 1979-05-23 Krupp Gmbh Verfahren und vorrichtung zum abpressen von fluessigkeiten
SU1021634A1 (ru) * 1982-03-02 1983-06-07 Харьковский Ордена Ленина Политехнический Институт Им.В.И.Ленина Пресс дл отжима растительного масла из маслосодержащего сырь
SU1381003A1 (ru) * 1985-12-04 1988-03-15 Ростовский-На-Дону Институт Сельскохозяйственного Машиностроения Пресс дл отжима сока

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111080A (en) * 1958-11-20 1963-11-19 French Oil Mill Machinery Screw press
FR2263884A1 (en) * 1974-03-15 1975-10-10 Laugier Alexandre Screw press to extract juice from fruit esp. grapes - uses single screw multi-stage controlled compression with interstage relief
FR2427194A1 (fr) * 1978-05-31 1979-12-28 Pb Gelatines Presse perfectionnee
EP0017809A1 (fr) * 1979-04-18 1980-10-29 Fried. Krupp Gesellschaft mit beschränkter Haftung Presse filtrante à vis et procédé pour l'extraction d'huile à partir de fruits et de graines oléagineux utilisant cette presse
DE3150766A1 (de) * 1980-12-09 1983-06-30 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover "auspress- und zerfaserungseinrichtung"

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008001171A3 (fr) * 2006-06-27 2008-05-15 Wam Spa Vis d'archimède pour convoyeurs, compacteurs et autres
EP2319782A1 (fr) * 2006-06-27 2011-05-11 Wam S.p.a. Vis d'Archimède pour convoyeurs, compacteurs et autres
US8215477B2 (en) 2006-06-27 2012-07-10 Wam Industriale S.P.A. Archimedes screw for use in conveyors, compactors and the like
AT16471U1 (de) * 2017-08-22 2019-10-15 Voith Patent Gmbh Schneckenpresse

Also Published As

Publication number Publication date
ATE139181T1 (de) 1996-06-15
DE9207096U1 (de) 1992-08-27
US5341730A (en) 1994-08-30
EP0571750B1 (fr) 1996-06-12
DE59302882D1 (de) 1996-07-18

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