EP0672519B1 - Schneckenpresse zum Entwässern von Suspensionen - Google Patents

Schneckenpresse zum Entwässern von Suspensionen Download PDF

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Publication number
EP0672519B1
EP0672519B1 EP95103576A EP95103576A EP0672519B1 EP 0672519 B1 EP0672519 B1 EP 0672519B1 EP 95103576 A EP95103576 A EP 95103576A EP 95103576 A EP95103576 A EP 95103576A EP 0672519 B1 EP0672519 B1 EP 0672519B1
Authority
EP
European Patent Office
Prior art keywords
perforated basket
screw
press according
pressing zone
screw press
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
EP95103576A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0672519A1 (de
Inventor
Uwe Dr. Krieger
Karl-Heinz Janus
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.)
Andreas Kufferath GmbH and Co KG
Original Assignee
Andreas Kufferath 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 Andreas Kufferath GmbH and Co KG filed Critical Andreas Kufferath GmbH and Co KG
Publication of EP0672519A1 publication Critical patent/EP0672519A1/de
Application granted granted Critical
Publication of EP0672519B1 publication Critical patent/EP0672519B1/de
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
    • B30B9/125—Control arrangements
    • 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
    • B30B9/18—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 with means for adjusting the outlet for the solid
    • 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
    • B30B9/26—Permeable casings or strainers

Definitions

  • the invention relates to a screw press for dewatering suspensions in Continuous operation with a rotatable, suspension-promoting Worm shaft, with a sheath, which is the worm of the worm shaft and a this flow-downstream, screwless press zone variable throttling surrounds, with a serving for suspensions to be dewatered Inlet at an inlet-side press end and with one for dewatered Suspensions serving the flow downstream of the pressing zone at the other end of the press, with the jacket in the area of the screw shaft as a liquid-permeable, solid-impermeable screen basket designed and in the area the press zone to change its effective press zone length depending on the operation is axially displaceable,
  • the pressing zone has active Throttle elements on.
  • the Sheath displacement is used only for a corresponding pressure-compensating change in size the outlet gap between the active throttle elements.
  • Screw presses are known in various designs and are used for drainage of various suspensions (rejects, capture materials, sludges, fiber materials) used.
  • the suspension to be dewatered is fed through a filling shaft (Inlet) placed on a rotating screw and from this towards one Press exit (discharge) promoted.
  • Inlet Inlet
  • Press exit discharge
  • throttling takes place so that the screw build up pressure in the suspension must to overcome the resistance of this throttling.
  • the pressure build-up causes the suspension to be dewatered.
  • Some screw presses are throttled by active (controllable / regulatable) Elements.
  • the active elements are mechanical, pneumatic or hydraulic actuated plates, cones or fins used, the pressure at which the exit is released, depending on other parameters (type of Suspension, final dry matter content) can be adjusted.
  • the present invention is therefore based on the task of a screw press of the kind mentioned in the preamble with simple measures that they avoid the disadvantages described with a high drainage efficiency a good adaptation of the throttle effect to the respective operating requirements as well as easy emptying and cleaning of the screw press.
  • the measures relating to the size of the displaceability of the screen basket Claims 2 to 4 meet the usual operational requirements and necessary throttling effects of the press zone.
  • claim 5 enables a particularly precise, continuous Adapting the length of the press zone to the respective operating requirements. In many applications, however, the gradual displaceability is sufficient according to claim 6.
  • claims 7 and 8 can be achieved with simple measures, that when changing the length of the pressing zone the inlet side strainer section can remain unchanged. Also the total length of the screw press can remain unchanged, which would not be the case if the entire screen basket can be moved would.
  • claims 9 to 11 are extremely advantageous because this can be achieved in an automatic manner that the length of the press zone is always optimally adapted to the respective operating conditions. If the drive power - or the torque - and / or the axial force increases too much this is an indication that the length of the press zone by moving the outlet side Sieve basket section must be reduced (for example, due to a impending blockage), so that the axial forces do not become too great. If, on the other hand, the drive power becomes too low, this is an indication that that the length of the press zone by moving the downstream strainer section must be increased so that adequate drainage takes place. Due to the variable suspension properties, variable ones occur during operation Drive power by means of which the press zone length can be optimized in a time-variable manner is. And finally, by moving back the screen basket or screen basket section in the zero position an effective press emptying or self-cleaning guaranteed.
  • the measure of claim 12 enables a very simple device technology Training by operating an adjusting device in one direction or the other depending on whether the actual value exceeds or falls below the setpoint.
  • a suitable drive according to claims 17 to 19 provided for adjusting the strainer basket section on the outlet side, so that the adjustment the press zone can be done automatically without manual intervention.
  • the inside of the press zone could be completely empty.
  • a screw press 10 has a screw shaft 12 which is in its left or area on the inlet side carries a worm 14.
  • the worm shaft 12 is in bearings 16 and 18 rotatably mounted and connected to an electric motor drive 30.
  • the screw press 10 has at the inlet end region of the screw shaft 12 an inlet 20 on the top for dewatered to be fed in the direction of arrow A. Suspensions on.
  • a liquid outlet 24 is provided in the deepest area of the screw press 10, from which the liquid removed from the suspension in the direction of arrow C. can run down.
  • the worm shaft 12 and its worm 14 are concentric of one Sheathed coat or strainer basket surrounded by an annular channel for the to draining suspension limited from the outside.
  • This strainer coat or strainer basket retains the solid components of the suspension and is permeable to liquids.
  • it consists of a stationary inlet basket section on the inlet side 32 and one on this longitudinally displaceable, concentric outlet side Sieve basket section 34. The latter more or less encloses one screwless press zone 28 of the worm shaft 12.
  • the throttling effect of the press zone 28 is the larger, the further the drain-side screen basket section 34 to the right is moved.
  • the drain-side screen basket section 34 is provided with one for axial displacement Drive 36 connected, in the present case as a hydraulic piston-cylinder unit is trained. This is with the motor rotary drive 30 via a control element 38 of a control loop connected, for example, the current motor drive power received as an input signal.
  • a predetermined setpoint increases or decreases, the drain-side screen basket section 34 shifted to the left or to the right to reduce the throttling effect the press zone 28 with the aim of a constant drainage result as well as lowering or increasing machine protection.
  • the control member 38 can drive the movable screen basket section 34 - for example when parking the press - down to a zero position (in the drawing to the left) in which complete press emptying is no problem can be done.
  • the control element 38 can also ensure that this zero position for Purposes of self-cleaning and thus to avoid constipation is started up during the press operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Treatment Of Sludge (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP95103576A 1994-03-14 1995-03-13 Schneckenpresse zum Entwässern von Suspensionen Expired - Lifetime EP0672519B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4408539 1994-03-14
DE4408539A DE4408539A1 (de) 1994-03-14 1994-03-14 Schneckenpresse

Publications (2)

Publication Number Publication Date
EP0672519A1 EP0672519A1 (de) 1995-09-20
EP0672519B1 true EP0672519B1 (de) 1998-11-11

Family

ID=6512701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103576A Expired - Lifetime EP0672519B1 (de) 1994-03-14 1995-03-13 Schneckenpresse zum Entwässern von Suspensionen

Country Status (6)

Country Link
US (1) US5713268A (sv)
EP (1) EP0672519B1 (sv)
JP (2) JP3881008B2 (sv)
DE (2) DE4408539A1 (sv)
FI (1) FI107792B (sv)
WO (1) WO1995025006A1 (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1005398C2 (nl) * 1997-02-28 1998-08-31 Matheus Everardus Antonis Inrichting voor het scheiden van een substantie in een in hoofdzaak vaste stof en een in hoofdzaak vloeibare stof alsmede een dergelijke werkwijze.
DE10059839C2 (de) * 2000-12-01 2003-07-24 Walter Gesner Verfahren und Vorrichtung zur Schlammeindickung in mechanisch-biologischen Abwasser-Kläranlagen
GB0327488D0 (en) * 2003-11-26 2003-12-31 Saroko Technologies Ltd Recycling apparatus
CN101927579A (zh) * 2010-05-13 2010-12-29 孙仁和 加热式强制性油脂分离压榨机及鱼粉机
WO2013186184A1 (en) * 2012-06-13 2013-12-19 Voith Patent Gmbh Method for removing liquid from a slurry
DE102021128199A1 (de) * 2021-10-28 2023-05-04 Vogelsang Gmbh & Co. Kg Separatorvorrichtung zur Entwässerung feuchter Massen

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE650988C (de) * 1932-05-20 1937-10-06 Fuller Co Staubpumpe mit den Gutseinlauf durchsetzender und in der Pumpentrommel und beim Gutsauslauf frei tragend angeordneter Foerderschnecke
AT142648B (de) * 1934-05-19 1935-08-26 Paul Ing Michor Kontinuierlich wirkende Presse.
US2678600A (en) * 1952-03-05 1954-05-18 Celanese Corp Compression and heat exchange apparatus
FR1368883A (fr) * 1963-06-26 1964-08-07 Dispositif auto-régulateur de compacité pour pressoir continu
US3276353A (en) * 1965-07-21 1966-10-04 French Oil Mill Machinery Controls for dewatering press
GB1127934A (en) * 1965-10-04 1968-09-18 Mtk Ingenioers Ab Fa Improvements in or relating to de-watering devices
US3394649A (en) * 1966-06-27 1968-07-30 Somat Corp Liquid extracting device
GB1170315A (en) * 1967-03-02 1969-11-12 Stork & Co Nv Improvements in and relating to a Low Pressure Fruit Press, particularly for Oil Palm Fruits
FR2036597A5 (en) * 1969-03-26 1970-12-24 Parr Peter Expressing grape juice
GB1506455A (en) * 1975-03-13 1978-04-05 Stork Amsterdam Device for the extraction of liquids from fibrous substances eg oil-containing fruits
US4291619A (en) * 1979-10-17 1981-09-29 Hunt Arthur J Screw press with controllable rear door
DE3207878A1 (de) * 1982-03-05 1983-09-15 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Einrichtung zum mechanischen trennen von fluessigkeiten aus fluessigkeitsfeststoffgemischen
US5012731A (en) * 1985-06-26 1991-05-07 Yves Maisonneuve Device for pressing heterogeneous mixtures with regulated pressing force for separating liquid and solid fractions thereof, in particular fruit juices

Also Published As

Publication number Publication date
FI955450A0 (sv) 1995-11-13
EP0672519A1 (de) 1995-09-20
FI955450A (sv) 1995-11-13
US5713268A (en) 1998-02-03
JP3881008B2 (ja) 2007-02-14
FI107792B (sv) 2001-10-15
DE4408539A1 (de) 1995-09-21
JPH08510413A (ja) 1996-11-05
JP2007000926A (ja) 2007-01-11
DE59504179D1 (de) 1998-12-17
WO1995025006A1 (de) 1995-09-21

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