EP1337343B1 - Schnecke für eine vollmantel-schneckenzentrifuge und verfahren zur ölgewinnung mit einer vollmantel-schneckenzentrifuge - Google Patents

Schnecke für eine vollmantel-schneckenzentrifuge und verfahren zur ölgewinnung mit einer vollmantel-schneckenzentrifuge Download PDF

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Publication number
EP1337343B1
EP1337343B1 EP01993375A EP01993375A EP1337343B1 EP 1337343 B1 EP1337343 B1 EP 1337343B1 EP 01993375 A EP01993375 A EP 01993375A EP 01993375 A EP01993375 A EP 01993375A EP 1337343 B1 EP1337343 B1 EP 1337343B1
Authority
EP
European Patent Office
Prior art keywords
screw
blade
recesses
area
blade segments
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.)
Expired - Lifetime
Application number
EP01993375A
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German (de)
English (en)
French (fr)
Other versions
EP1337343A1 (de
Inventor
Steffen Hruschka
Roger HÜLSMANN
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.)
GEA Mechanical Equipment GmbH
Original Assignee
Westfalia Separator GmbH
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Filing date
Publication date
Application filed by Westfalia Separator GmbH filed Critical Westfalia Separator GmbH
Publication of EP1337343A1 publication Critical patent/EP1337343A1/de
Application granted granted Critical
Publication of EP1337343B1 publication Critical patent/EP1337343B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/205—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with special construction of screw thread, e.g. segments, height
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S494/00—Imperforate bowl: centrifugal separators
    • Y10S494/901—Imperforate bowl: centrifugal separators involving mixture containing oil

Definitions

  • the invention relates to a screw for a solid bowl screw centrifuge according to the preamble of claim 1 and a method for oil extraction with a solid bowl centrifuge.
  • a method that has proven particularly useful in olive oil production is from EP 0 557 758.
  • a two-phase separation performed, in which the oil directly from a solid / water mixture is separated.
  • the invention solves this problem on the one hand by a particularly advantageous Worm whose features are specified in claim 1. It also dissolves it a particularly advantageous method for oil extraction, the features in the claim 35 are indicated.
  • a screw is provided for a solid bowl centrifuge, the sections in the conveyor track between adjacent Schnekken réellen has additional space segments. Furthermore, the screw blade is preferable provided with recesses which are formed such that a Flow through the material to be centrifuged between adjacent flights possible is.
  • the screw according to the invention By the screw according to the invention, the economy of oil production can be considerably increase. In this respect, in particular to the in the figure description referenced experiments, whose results in the figures 4 and 5 are shown. A particular advantage of the invention is to be seen in that the screw also easily retrofit existing centrifuges leaves.
  • the screw according to the invention is particularly suitable for use in a process for oil extraction from fruits and seeds and for better drainage and / or de-oiling pulp from organic materials (e.g. Pulp mash, animal tissues such as fish, egg, gout cells).
  • a Combination of recesses and blade segments provide, wherein the blade segments and the recesses are preferably formed in the axial direction are that the recesses each in the axial direction (and / or angled or zig-zag to the central axis y) form extending channels in which the Leaf segments are standing.
  • blade segments and the recesses are formed only in the cylindrical portion of the screw body and when in the conical section of the screw, especially in the two-phase separation a baffle plate is provided.
  • leaf-segment-like screw threads for example from WO 97/23295.
  • these leaf segments extend into the conical section, which is unfavorable according to the invention is.
  • they are on the circumference of the screw body in its entire area distributed, which has also proved to be of little benefit.
  • the additional blade segments in the conveyor track are formed so that they are in the range of solids or the solids but preferably an outer region of e.g. 25 mm is not reached by the leaf segments, since in this area already relative completely de-oiled and permanently discharged solids are present.
  • a solids slurry preferably via a rectangular tube, in the drum is fed.
  • the rectangular tube must be so long that the incoming, protected to be centrifuged by the oil layer is brought to this subsequently not remix.
  • the separation zone is quite close to the screw body a (10, 20 ..., to 40 to 50 mm distance).
  • the fresh oil is as clean Phase only 20 to 30 mm outside the slug body recognize.
  • the introduced solid as part of the supplied suspension is thus the machine Fill so far that this up to the oil separation zone (about 10, 20 ... to a maximum of 40 to 50 mm outside the screw body) is filled with solid suspensions.
  • the oil separation zone about 10, 20 ... to a maximum of 40 to 50 mm outside the screw body
  • solid suspensions are filled with solid suspensions.
  • the solid is drier on the outside than inside In other words, the dry matter content on the drum side is much higher than the dry matter content towards the interior.
  • the solid In the area of the leading leaf segments, the solid additionally becomes axially pressed together. He is then relaxed in the area of the recesses. It results thus an effect of pressure increases and relaxation. Essentially in the relaxation area the oil release takes place, which is thus more effective than without the additional relaxation zones.
  • the worm body has a cylindrical in its rear region Section and in its adjoining front area one substantially conically uniform or uneven - e.g. stepped - tapered section on, with the recesses and leaf segments exclusively are formed in the region of the cylindrical portion.
  • the screw body in the cylindrical portion initially at least one helix, which is free of recesses and free of leaf segments is formed, which is followed by further worm threads, which with the Recesses and leaf segments are provided.
  • Oil drain channels are formed.
  • the recesses have a remaining portion of the screw blade on the circumference of the screw body.
  • the leaf segments - based on one or more flights - Evenly or unevenly distributed on the circumference of the screw body.
  • the area of the recesses is about 25-60%, in particular 40 - 50% of the worm gear area.
  • the recesses in the screw blades are designed such that they project radially beyond at least the area of the solid zone (for example 70-95%, preferably 70-100% of the screw blade height).
  • the height of the leaf segments is about 0 - 30% lower than that Screw blade height.
  • the blade segments are designed as rectangular plates conceivable are also trapezoidal, rounded and / or from the snail body outwardly tapering or widening shaped elements.
  • Fig. 1 shows a screw 1 for a solid bowl screw centrifuge, wherein the Screw a worm body 3 and here a worm body 3 several times surrounding worm blade 5, which has a plurality of flights (x, x + 1, x + 2, etc.).
  • a conveyor track 7 for Fördem / transport formed to be processed centrifuged is a conveyor track 7 for Fördem / transport formed to be processed centrifuged.
  • the screw body 3 has in its rear in Fig. 1 area a cylindrical Section 9 and in his in Fig. 1 adjoining the front area a conically tapering section 11.
  • the centrifuged material S is through the centrally disposed, adjustable inlet pipe 14th in an inlet chamber 15 and from there through openings 17 in the drum space 19 with the screw 1 and the screw 1 surrounding drum 21 passed.
  • these Einlaufkammem 15 and openings 17 (or special Distributor) in the embodiment of Fig. 1 at the rear end of the cylindrical Section 3 arranged.
  • the centrifuged material S is accelerated to the operating speed.
  • the solid particles settle in the shortest possible time Time off at the drum wall.
  • the screw 1 rotates at a speed slightly lower or higher than the drum 21 and promotes the ejected solid F to the conical section 11 out of the drum 21 for solids 23.
  • the liquid L flows toward the larger drum diameter at the rear End of the drum 21 and is derived there (overflow 25).
  • the worm 1 of Figure 1 points from its second flight (X + 1) to its fifth flight (X + 4) recesses 27 in the screw on.
  • recesses 27 are formed in the embodiment of FIG. 1 such that in the axial direction from the second to the fifth screw blade forming extending axial channels K.
  • a single helix with Recesses 27 and blade segments 29 is in a simplified embodiment also conceivable.
  • additional leaf segments 29 are arranged here as Metal strips are formed here from the outer periphery of the Schnekken stresses 3 outwardly widening trapezoidal shape.
  • the separation of the leaf sections or segments can either take place in such a way that that the screw blade 5 is separated to the circumference of the screw body 3 becomes. Alternatively, however, a remaining portion 30 of the screw blade 5 on The circumference of the screw body 3 stop. Is the removal essentially radially to the drum and screw axis y, resulting trapezoidal Leaf segments 29.
  • Fig. 6a, b show the velocity profiles in a helix in the area the recesses and leaf segments.
  • Fig. 6a it is clear that "in the shade" of the leaf segment, the velocity of the particles increases from the inside to the outside.
  • the maximum value is reached, which According to Fig. 6b at the upper leaf segment edge again substantially constant is.
  • the screw 1 - in Fig. 1 from the rear inlet zone forward looking at the conical section - at first some turns x-1, x, x + 1 on, in the area of the screw blade 5 each continuous or free of recesses is trained.
  • at least one or two flights are x continuously formed. In this area are also no additional Leaf segments 29 provided in the conveyor track 7.
  • This zone is followed by some worm threads x + 2, ... x + 5, which with the recesses 27 are provided and in the interstices or in the Conveyor tracks 7 each formed the blade segments 29 or erected (welded) are.
  • This zone extends maximally to the beginning of the conical section 11th the screw 1.
  • the baffle plate 13 is arranged.
  • the snail should be formed free of recesses, also in the conveyor track 7 and no additional Leaf segments 29 are arranged.
  • Per screw flight are preferably 2 to 6, especially 3 to 5, especially preferably 4 recesses 27 formed.
  • the blade segments 29 are uniformly on the circumference of the screw body 3 distributed.
  • the worm threads x are relative to the central axis or to the axis of symmetry y Screw 1 each arranged at an angle or close to the central axis one Angle ⁇ on.
  • the amount of the angle ⁇ (measured at the bottom of the Schnekkenblattes 5), is preferably between 60 and 85 °, in particular at 75 to 80 °.
  • the blade segments close with the symmetry axis y a Angle ⁇ one smaller than ⁇ .
  • ⁇ is between 40 and 70 °, in particular 50 to 55 °.
  • the blade segments 29 are substantially parallel to the To align the worm blade 5 (maximum difference angle between ⁇ and ⁇ preferably about 10 - 11 °).
  • the surface of the recesses is about 50 ° of the checkered surface.
  • the angular size ( ⁇ ) is determined by the fact that the Width of the distance (a) - viewed in orthogonal extension of the edges - between the blade longitudinal edge and the recess edge 27 at 0 to 28%, in particular at 15 to 25% of the distance of a pair of flights - preferably considered at the base of the snail (inside), depending on the shape - lies.
  • the height h of the Blade segments (measured from the outer circumference of the screw body 3).
  • the height h of Blade segments 29 is selected such that it extends into the region of the solid zone extend. Accordingly, the screw blades 5 should have recesses 27, which project radially beyond at least the region of the solid zone.
  • the height h is selected about 30 mm lower than the Schneckenblatt height k.
  • the worm blade closes with the peripheral wall of the worm body 3 according to FIG. 2b further includes an angle ⁇ . This is preferably smaller as the angle ⁇ , which the blade segment 29 encloses with the screw body 3.

Landscapes

  • Centrifugal Separators (AREA)
EP01993375A 2000-11-10 2001-10-18 Schnecke für eine vollmantel-schneckenzentrifuge und verfahren zur ölgewinnung mit einer vollmantel-schneckenzentrifuge Expired - Lifetime EP1337343B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10055798 2000-11-10
DE10055798A DE10055798A1 (de) 2000-11-10 2000-11-10 Schnecke für eine Vollmantel-Schneckenzentrifuge und Verfahren zur Ölgewinnung mit einer Vollmantel-Schneckenzentrifuge
PCT/EP2001/012069 WO2002038278A1 (de) 2000-11-10 2001-10-18 Schnecke für eine vollmantel-schneckenzentrifuge und verfahren zur ölgewinnung mit einer vollmantel-schneckenzentrifuge

Publications (2)

Publication Number Publication Date
EP1337343A1 EP1337343A1 (de) 2003-08-27
EP1337343B1 true EP1337343B1 (de) 2005-02-09

Family

ID=7662853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01993375A Expired - Lifetime EP1337343B1 (de) 2000-11-10 2001-10-18 Schnecke für eine vollmantel-schneckenzentrifuge und verfahren zur ölgewinnung mit einer vollmantel-schneckenzentrifuge

Country Status (10)

Country Link
US (1) US6908423B2 (da)
EP (1) EP1337343B1 (da)
JP (1) JP2004512945A (da)
AR (1) AR031307A1 (da)
AT (1) ATE288790T1 (da)
DE (2) DE10055798A1 (da)
DK (1) DK1337343T3 (da)
ES (2) ES1048837Y (da)
PT (1) PT1337343E (da)
WO (1) WO2002038278A1 (da)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10055798A1 (de) * 2000-11-10 2002-05-23 Westfalia Separator Ind Gmbh Schnecke für eine Vollmantel-Schneckenzentrifuge und Verfahren zur Ölgewinnung mit einer Vollmantel-Schneckenzentrifuge
DE20208119U1 (de) * 2002-05-24 2002-08-14 Hiller GmbH, 84137 Vilsbiburg Dekantierzentrifuge für die Gewinnung von Frucht- oder Gemüsesäften
US7001324B2 (en) * 2003-01-08 2006-02-21 Hutchison Hayes, L. P. Method of retrofitting a decanting centrifuge
JP2006124424A (ja) * 2004-10-26 2006-05-18 Miyoshi Oil & Fat Co Ltd 油脂の分別処理方法
DE102005061461A1 (de) * 2005-12-22 2007-07-05 Westfalia Separator Ag Vollmantel-Schneckenzentrifuge
DE102006056934A1 (de) * 2006-11-30 2008-06-05 Westfalia Separator Ag Verfahren zur zentrifugalen Klärung eines ölhaltigen Sandes
DE102010027598A1 (de) 2010-07-20 2012-01-26 Gea Mechanical Equipment Gmbh Verfahren zur Klärung eines Wein-Gelägers
CN102199891B (zh) * 2011-05-17 2013-05-01 江西洪都精工机械有限公司 带有螺旋推进和搅拌碎解功能的组合转子及制造方法
PT2586533T (pt) * 2011-10-28 2019-11-21 Flottweg Se Centrífuga de parafuso contínuo de parede sólida com um parafuso contínuo
KR101508057B1 (ko) 2013-07-19 2015-04-07 주식회사 일성 진공흡입펌프
KR101490746B1 (ko) 2014-06-09 2015-02-06 주식회사 화인 탈수 성능이 향상된 원심 탈수기
CN109482370A (zh) * 2018-12-20 2019-03-19 上海市离心机械研究所有限公司 一种用于橄榄油油相提取的卧螺离心机螺旋结构
KR102170275B1 (ko) * 2019-01-30 2020-10-26 백도선 친환경 준설토 처리 시스템
DE102019102623A1 (de) 2019-02-04 2020-08-06 Gea Mechanical Equipment Gmbh Verfahren zum Klären einer Suspension von Feststoffen
CN111729763A (zh) * 2020-07-27 2020-10-02 坚纳森（青岛）机械有限公司 一种离心机转子结构
CN112827665A (zh) * 2021-01-21 2021-05-25 巨能机械(中国)有限公司 带副叶片的螺旋输送器与螺旋卸料沉降离心机

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GB733515A (en) * 1952-05-28 1955-07-13 Separator Ab Improvements in or relating to the separating of liquids and solids
JPS57194061A (en) * 1981-05-26 1982-11-29 Kobe Steel Ltd Centrifugal concentrating device
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GB8620436D0 (en) * 1986-08-22 1986-10-01 Mozley R H Centrifugal solids-liquids separator
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DE10055798A1 (de) * 2000-11-10 2002-05-23 Westfalia Separator Ind Gmbh Schnecke für eine Vollmantel-Schneckenzentrifuge und Verfahren zur Ölgewinnung mit einer Vollmantel-Schneckenzentrifuge
DE20208119U1 (de) * 2002-05-24 2002-08-14 Hiller GmbH, 84137 Vilsbiburg Dekantierzentrifuge für die Gewinnung von Frucht- oder Gemüsesäften
ES2217926B1 (es) * 2002-05-28 2006-02-16 Josep Sallent Soler Proceso continuo para la obtencion de aceite de oliva con extraccion al vacio o presion negativa.

Also Published As

Publication number Publication date
US6908423B2 (en) 2005-06-21
DE10055798A1 (de) 2002-05-23
ATE288790T1 (de) 2005-02-15
PT1337343E (pt) 2005-04-29
US20030129042A1 (en) 2003-07-10
AR031307A1 (es) 2003-09-17
ES1048837U (es) 2001-10-01
DK1337343T3 (da) 2005-05-30
ES2233712T3 (es) 2005-06-16
JP2004512945A (ja) 2004-04-30
DE50105332D1 (de) 2005-03-17
EP1337343A1 (de) 2003-08-27
ES1048837Y (es) 2002-02-16
WO2002038278A1 (de) 2002-05-16

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