EP0672519A1 - Presse à vis pour la déshydratation de suspensions - Google Patents

Presse à vis pour la déshydratation de suspensions Download PDF

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Publication number
EP0672519A1
EP0672519A1 EP95103576A EP95103576A EP0672519A1 EP 0672519 A1 EP0672519 A1 EP 0672519A1 EP 95103576 A EP95103576 A EP 95103576A EP 95103576 A EP95103576 A EP 95103576A EP 0672519 A1 EP0672519 A1 EP 0672519A1
Authority
EP
European Patent Office
Prior art keywords
screen basket
screw
zone
press according
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.)
Granted
Application number
EP95103576A
Other languages
German (de)
English (en)
Other versions
EP0672519B1 (fr
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/fr
Application granted granted Critical
Publication of EP0672519B1 publication Critical patent/EP0672519B1/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
    • 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 a continuous mode with a rotatably drivable, suspension-promoting worm shaft, with a jacket which surrounds the worm of the worm shaft and a press zone downstream of it with variable throttling, with an inlet serving for suspensions to be dewatered on an inlet side End of the press and with a drain serving for dewatered suspensions and downstream of the press zone in terms of flow at the other end of the press, Screw presses are known in various designs and are used for dewatering various suspensions (rejects, capture materials, sludge, fiber materials).
  • the suspension to be dewatered is placed on a filling shaft (inlet) on a rotating screw and is conveyed from there towards a press outlet (outlet).
  • a press outlet outlet
  • throttling takes place in a so-called press zone, so that the screw builds 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) elements.
  • Active elements Mechanically, pneumatically or hydraulically operated plates, cones or lamellas are used as active elements, whereby the pressure at which the outlet is released can be set depending on other parameters (type of suspension, final dry matter content).
  • the present invention is therefore based on the object of designing a screw press of the type mentioned in the preamble with simple measures such that it enables a good adaptation of the throttling effect to the respective operating requirements and easy emptying and cleaning of the screw press while avoiding the disadvantages described with a high drainage efficiency .
  • a screw press of the type mentioned in the preamble is characterized according to the invention by the features mentioned in the characterizing part of claim 1.
  • the measure according to the invention of the screen basket which can be moved axially in the region of the pressing zone allows the throttling action of the highly effective pressing zone to be quickly adapted to the required operating conditions in a simple manner, and without major changes in the press.
  • These operating conditions depend on the character of the suspension, its friction behavior and its shear strength. This adjustment can be done very quickly. As a result, an optimal drainage result and a sufficient dryness can always be achieved, even with variable suspension properties. This also increases operational safety and reduces the risk of machine damage due to clogging.
  • the screw press can easily be completely emptied and the sieve basket in the pressing zone can be regularly cleaned of accumulated layers, which is important, for example, to remove dried-up suspension components and to avoid impermissibly high machine loads when restarting.
  • claim 5 enables a particularly precise, continuous adjustment of the length of the press zone to the respective operating requirements. In many applications, however, the stepwise displaceability according to claim 6 is sufficient.
  • claims 7 and 8 can be achieved with simple measures that when changing the length of the pressing zone the inlet-side screen basket section can remain unchanged.
  • the overall length of the screw press can also remain unchanged, which would not be the case if the entire screen basket were movable.
  • claims 9 to 11 are extremely advantageous because it can be achieved automatically 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 pressing zone must be reduced by moving the downstream strainer basket section (e.g. due to an impending blockage) so that the axial forces do not occur get too big. If, on the other hand, the drive power becomes too small, this is an indication that the length of the pressing zone is caused by shifting the downstream strainer basket section must be increased so that adequate drainage takes place. Due to the variable suspension properties, variable drive powers also occur in operation, by means of which the press zone length can be optimized in a time-variable manner. And finally, by returning the screen basket or screen basket section to the zero position, an effective press emptying or self-cleaning is guaranteed.
  • the measure of claim 12 enables a very simple technical training in that an adjusting means is operated in one direction or the other, depending on whether the actual value exceeds or falls below the setpoint.
  • a suitable drive is provided for adjusting the strainer basket section on the outlet side, so that the pressing zone can be adjusted automatically without manual intervention.
  • the measure of claim 22 results in a very simple press zone structure, the throttling of which can be adjusted solely by moving the screen basket which can be found in this area.
  • the inside of the press zone could be completely empty.
  • the length of the pressing zone required for a specific throttling can also be smaller.
  • a screw press 10 has a screw shaft 12 which carries a screw 14 in its left-hand or inlet-side area.
  • the worm shaft 12 is rotatably supported in bearings 16 and 18 and connected to an electric motor rotary drive 30.
  • the screw press 10 At the inlet-side end region of the screw shaft 12, the screw press 10 has an inlet 20 on the top for water to be dewatered in the direction of arrow A. Suspensions on.
  • the screw press 10 On the right or drain-side, screw-free area of the screw shaft 12, the screw press 10 has a drain 22 on the underside for dewatered suspensions to be discharged in the direction of arrow B.
  • a liquid drain 24 is provided in the deepest area of the screw press 10, from which the liquid removed from the suspension can drain downward in the direction of arrow C.
  • the worm shaft 12 and its worm 14 are surrounded by a concentric screen jacket or screen basket, which delimits an annular channel for the suspension to be dewatered from the outside.
  • This strainer jacket or strainer basket holds back the solid components of the suspension and is permeable to liquids.
  • it consists of a stationary inlet-side screen basket section 32 and a longitudinally displaceable, concentric outlet-side screen basket section 34 on this. The latter more or less encloses a screwless pressing zone 28 of the worm shaft 12. The throttling effect of the pressing zone 28 is greater, the further the drain-side screen basket section 34 is shifted to the right.
  • the drain-side screen basket section 34 is connected to a drive 36 which serves for axial displacement and which, in the present case, is designed as a hydraulic piston-cylinder unit. This is connected to the motor rotary drive 30 via a control element 38 of a control circuit which receives, for example, the current motor drive power as an input signal. If the motor drive power rises or falls compared to a predetermined target value, the drain-side screen basket section 34 is shifted to the left or to the right in order to reduce the throttling effect the press zone 28 with the aim of a consistent dewatering result and a machine protection correspondingly lower or enlarge.
  • the control element 38 can move the movable screen basket section 34 via the drive 36 - for example when the press is switched off - to a zero position (to the left in the drawing), in which complete press emptying can be carried out without any problems.
  • the control element 38 can also ensure that this zero position is also approached during the press operation for the purpose of self-cleaning and thus to avoid blockages.

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 Presse à vis pour la déshydratation de suspensions Expired - Lifetime EP0672519B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6512701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103576A Expired - Lifetime EP0672519B1 (fr) 1994-03-14 1995-03-13 Presse à vis pour la déshydratation de suspensions

Country Status (6)

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

Cited By (2)

* 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.
WO2023072814A1 (fr) * 2021-10-28 2023-05-04 Vogelsang Gmbh & Co. Kg Dispositif de séparation pour la déshydratation de matière humide

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US10654235B2 (en) 2012-06-13 2020-05-19 Iogen Energy Corporation Method for removing liquid from a slurry

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1368883A (fr) * 1963-06-26 1964-08-07 Dispositif auto-régulateur de compacité pour pressoir continu
GB1127934A (en) * 1965-10-04 1968-09-18 Mtk Ingenioers Ab Fa Improvements in or relating to de-watering devices
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
DE3207878A1 (de) * 1982-03-05 1983-09-15 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Einrichtung zum mechanischen trennen von fluessigkeiten aus fluessigkeitsfeststoffgemischen

Family Cites Families (7)

* 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
US3276353A (en) * 1965-07-21 1966-10-04 French Oil Mill Machinery Controls for dewatering press
US3394649A (en) * 1966-06-27 1968-07-30 Somat Corp Liquid extracting device
US4291619A (en) * 1979-10-17 1981-09-29 Hunt Arthur J Screw press with controllable rear door
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1368883A (fr) * 1963-06-26 1964-08-07 Dispositif auto-régulateur de compacité pour pressoir continu
GB1127934A (en) * 1965-10-04 1968-09-18 Mtk Ingenioers Ab Fa Improvements in or relating to de-watering devices
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
DE3207878A1 (de) * 1982-03-05 1983-09-15 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Einrichtung zum mechanischen trennen von fluessigkeiten aus fluessigkeitsfeststoffgemischen

Cited By (3)

* 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.
WO1998037942A1 (fr) * 1997-02-28 1998-09-03 Matheus Everardus Antonis Dispositif de separation d'une substance en une matiere sensiblement solide et en une matiere sensiblement liquide
WO2023072814A1 (fr) * 2021-10-28 2023-05-04 Vogelsang Gmbh & Co. Kg Dispositif de séparation pour la déshydratation de matière humide

Also Published As

Publication number Publication date
DE59504179D1 (de) 1998-12-17
FI955450A (fi) 1995-11-13
JP2007000926A (ja) 2007-01-11
JPH08510413A (ja) 1996-11-05
FI107792B (fi) 2001-10-15
JP3881008B2 (ja) 2007-02-14
US5713268A (en) 1998-02-03
EP0672519B1 (fr) 1998-11-11
WO1995025006A1 (fr) 1995-09-21
FI955450A0 (fi) 1995-11-13
DE4408539A1 (de) 1995-09-21

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