EP0268703A1 - Presse avec un tamis cylindrique pour pressurer le liquide d'une matière fibreuse - Google Patents

Presse avec un tamis cylindrique pour pressurer le liquide d'une matière fibreuse Download PDF

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Publication number
EP0268703A1
EP0268703A1 EP86116576A EP86116576A EP0268703A1 EP 0268703 A1 EP0268703 A1 EP 0268703A1 EP 86116576 A EP86116576 A EP 86116576A EP 86116576 A EP86116576 A EP 86116576A EP 0268703 A1 EP0268703 A1 EP 0268703A1
Authority
EP
European Patent Office
Prior art keywords
piston
filling
section
press
pressed
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.)
Withdrawn
Application number
EP86116576A
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German (de)
English (en)
Inventor
Hans Schmidt
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.)
BMA Braunschweigische Maschinenbauanstalt AG
Original Assignee
BMA Braunschweigische Maschinenbauanstalt AG
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 BMA Braunschweigische Maschinenbauanstalt AG filed Critical BMA Braunschweigische Maschinenbauanstalt AG
Priority to EP86116576A priority Critical patent/EP0268703A1/fr
Publication of EP0268703A1 publication Critical patent/EP0268703A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B30B9/04—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 press rams
    • B30B9/06—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 press rams co-operating with permeable casings or strainers
    • 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
    • B30B9/04—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 press rams
    • B30B9/042—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 press rams co-operating with casings mounted on a movable carrier, e.g. turntable

Definitions

  • the invention relates to a screen jacket press for squeezing liquid-containing fibrous material to be pressed, in particular for dewatering extracted sugar beet pulp, with a screen jacket preferably arranged in a lying position and in the region of the one end opening in the screen jacket, a drivable pressing and conveying element guided in the screen jacket and one discharge opening provided at the other end of the sieve jacket and liquid collecting container arranged under the sieve jacket.
  • screen jacket presses are designed as spindle presses, ie one or two helical press spindles are provided in the screen jacket as drivable pressing and conveying elements.
  • This Known screen jacket presses compress the helical press spindles during their rotational movement by pressing between the helical gears and the screen jacket.
  • the pressing pressure of such presses is essentially dependent on the internal friction angle of the material to be pressed.
  • the pressing pressure is limited to relatively low values for pressed goods with low internal friction, such as, for example, extracted sugar beet chips, so that the degree of pressing and thus the increase in the dry matter content of the pressed material is likewise correspondingly low.
  • the pressing time is limited to relatively small values by the necessary spindle speed and the press length.
  • the invention has for its object to design a screen jacket press of the type mentioned in such a way that a largely independent of the internal friction conditions of the material to be pressed, the pressure setting and a freely selectable setting of the pressing times is possible in order to achieve higher pressures and thus greater dry matter contents.
  • the screen jacket press mentioned in the introduction is characterized in that the press is designed as a piston press with separately driven displacer pistons held in the two end regions of the screen jacket, one of which is a filling piston adapted to the inner cross section of the screen jacket and the other as a press are designed piston, wherein the plunger to form an annular discharge opening has an end section with a smaller cross section than the screen jacket and a tapering section in the direction of the filling piston.
  • the separately driven two pistons which perform different tasks, can be used to convey the wet material to be pressed through the filling shaft into the sieve jacket in the direction of the pressure piston and to press it against the material already in the press chamber. During this filling process, the newly introduced material is pre-dewatered by the pressure that builds up.
  • the actual dewatering is effected by the plunger opposite the filling plunger, which, like the filling plunger, can be driven back and forth and leads to a very considerable build-up of pressure in the pressing material during its respective insertion movement into the pressing material with a pressing chamber that is otherwise closed, while simultaneously building up the material to be pressed also causes a transverse movement of the material in the region of the tapered section of the plunger.
  • the insertion movement of the plunger simultaneously reduces the volume of the material to be pressed with a slight transverse movement, through which the drainage capability or the creation of new drainage paths is improved.
  • the pressure generated by the plunger in the screen jacket can be maintained over any period of time before moving together by moving the column of material located in the screen jacket is moved with the plunger in the ejection direction in order to discharge the material to be pressed located in the area of the annular gap between the plunger and the screen jacket.
  • screw presses for example, can be used to extract extracted sugar beet chips up to approx. 30% dry matter, while values of up to 40% dry matter can be achieved with the object of application.
  • This increased dry matter content is of particular importance if the pressed material subsequently has to be subjected to a thermal drying treatment, for which very considerable amounts of energy are required.
  • the tapering section of the plunger is conical or pyramid-shaped.
  • the length of the tapered section of the plunger can be chosen so that it extends into the vicinity of the plunger in its inserted position.
  • the two displacement pistons are expediently connected to separate piston-cylinder drives, it being favorable if the one connected to the plunger Drive is equipped with a pressure relief valve that can be switched on and off. As a result, the column of material and the plunger can be displaced for the purpose of discharging the pressed-out material, but the plunger remains loaded with an ejection back pressure during the ejection movement.
  • the two displacement pistons are hollow and their walls which interact with the material to be pressed are designed as sieve walls. This enables an additional discharge of the liquid from the pressed material. In the area of the conical section of the plunger, a reduction in the path of the liquid from the material to be pressed is achieved at the same time, thereby reducing the necessary pressing time.
  • the screen jacket is designed to be flared in the direction from the filling piston to the pressing piston. This achieves a reduction in the filling pressure required to push the cake and the plunger further.
  • annular check valve can optionally be closed in the region of the discharge end of the screen jacket and releasing the annular gap between the plunger and the screen jacket can be provided.
  • the embodiment described according to claim 8 is used to achieve extremely long pressing times, only a single filling piston with associated drive device being required for the filling.
  • FIG. 1 shows a filling piston 1 in the left part and a displacement piston 2 in the right part, which extend from opposite ends into a pressure-stable screen jacket 3.
  • the filling piston 1 is adapted in its cross section to the inner cross section of the screen jacket 3.
  • the filling piston 1 is in the starting position in a section 3a of the Siebman 3 included, which is not designed as a sieve, but has a closed, imperforate wall.
  • the cross section of the screen jacket 3 is round in the example shown and also in the other figures, but can also have a square, rectangular or other polygonal cross section.
  • the plunger 2 has an end portion 2a, which is adapted in its cross-sectional shape to the screen jacket 3, but is kept smaller compared to this, so that between the end section 2a and the screen jacket 3 an annular space 12 remains, which serves as a discharge opening for the material to be pressed.
  • the plunger 2 also has a section 2b which tapers from the end section 2 in the direction of the filling plunger and which is conical in the example shown and extends into the vicinity of the filling plunger 1 when it has reached its insertion position.
  • the section 2b of the plunger 2 can also be pyramid-shaped or polygonal in its cross-section or also have a concave or convex design.
  • the screen jacket 3 is arranged horizontally and in the region of the end in which the filling piston 1 engages in the screen jacket is equipped with a filling shaft 9 through which the material to be squeezed out is introduced into the filling shaft 3.
  • the filling piston 1 and the plunger 2 are with separately acting piston-cylinder drives 6 and 7 respectively connected.
  • the cylinder of the piston-cylinder arrangement 7 of the press cylinder 2 is also equipped with a pressure relief valve 8 which can be switched on and off.
  • the filling piston 1 and the plunger 2 are designed as hollow pistons. Your walls interacting with the material to be pressed, i.e. the end wall of the filling piston 1 facing the material to be pressed and the walls of section 2b of the pressing piston 2 are designed as sieve walls 4 and 5 respectively.
  • the liquid entering the plunger 2 is discharged through a discharge line 21, while an outlet opening 22 is provided in the outer end wall thereof for the liquid entering the filling piston 1 to exit.
  • a liquid collecting container in the form of a trough 20, which is equipped with drainage openings 23 for the discharge of the press liquid reaching into the trough.
  • a periodically drivable gate valve 16 which is connected to a piston-cylinder arrangement 17 and extends through a slot 24 of the screen jacket, is arranged behind the filling shaft and, in the example, just before the end of section 2b of the pressure piston 2 3 extends so that it can be transferred transversely to the longitudinal direction of the screen jacket between a blocking position filling the cross section of the screen jacket and a position releasing this cross section.
  • annular shut-off valve 25 At the end cooperating with the plunger 2 of the screen jacket 3 there is an annular shut-off valve 25 which can be transferred via a further piston-cylinder drive 19 between a position closing and releasing the discharge opening 12 formed by the annular gap.
  • FIG. 2 shows the starting position of the filling piston 1, which is also shown in FIG. 1, and the plunger 2 in its inserted position with the ring valve 25 closed. In this position, the material to be pressed can pass through the filling shaft 9 into the interior of the screen jacket 3.
  • the locking slide 16 is in the locked position.
  • the filling piston 1 presses in the now following feed movement in the direction of the arrow shown in FIGS. 1 and 2, the wet pressed material introduced into the screen jacket in the direction of the press piston 2.
  • the piston-cylinder arrangement 17 the locking slide 16 in the release position shown in FIG. 3, so that the pressure of the filling piston 1 is transferred to the material to be pressed in the screen jacket 3.
  • the filling piston 1 now initially remains in its inserted position according to FIG. 4, while the piston-cylinder arrangement 7 now advances the pressing piston 2 in the direction of the arrow shown in FIG. 4.
  • This advance of the plunger 2 results in a volume reduction of the space available to the material to be pressed in the press cylinder 3, combined with a radial displacement movement of the material to be pressed, so that a very high pressure is built up inside the screen jacket 3 with a small movement of the material to be pressed. In this way, with the generation of a high pressure, new drainage channels for the outflow of the liquid are created.
  • the filling piston 1 can be returned to its starting position shown in FIG. 2.
  • the movement sequence described above is repeated and as a result a gradual further conveying of the pressed material through the sieve casing 3 is repeated with each cycle until it is discharged through the annular gap 12.
  • the screen jacket 3 can be slightly conically expanded in the direction of movement of the material to be pressed.
  • FIGS. 6 and 6a An arrangement of the aforementioned type is shown schematically in FIGS. 6 and 6a.
  • An axis of rotation 28 connected to a drive 29 is mounted in a support frame 25.
  • turntable-like support disks 26 and 27 are arranged, which receive press cylinders 3 arranged revolver-like around the axis of rotation 28 with press pistons 2 associated therewith and drives 7 connected therewith, and the annular blocking valves 25 interacting with the press piston and the screen jacket.
  • a total of eight screen jackets 3 are held in the support disks 26 and 27, as can be seen in FIG. 6a.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
EP86116576A 1986-11-25 1986-11-25 Presse avec un tamis cylindrique pour pressurer le liquide d'une matière fibreuse Withdrawn EP0268703A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP86116576A EP0268703A1 (fr) 1986-11-25 1986-11-25 Presse avec un tamis cylindrique pour pressurer le liquide d'une matière fibreuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86116576A EP0268703A1 (fr) 1986-11-25 1986-11-25 Presse avec un tamis cylindrique pour pressurer le liquide d'une matière fibreuse

Publications (1)

Publication Number Publication Date
EP0268703A1 true EP0268703A1 (fr) 1988-06-01

Family

ID=8195627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116576A Withdrawn EP0268703A1 (fr) 1986-11-25 1986-11-25 Presse avec un tamis cylindrique pour pressurer le liquide d'une matière fibreuse

Country Status (1)

Country Link
EP (1) EP0268703A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392340A2 (fr) * 1989-04-08 1990-10-17 SCHOTTEN, Alfons Filtre-presse
GB2238964A (en) * 1989-08-04 1991-06-19 Yamamoto Mfg Pressing oil from vegetable matter
WO1996023652A1 (fr) * 1995-02-01 1996-08-08 Oy Sne Environment Engineering Ltd. Presse de deshydratation
AT407857B (de) * 1999-11-05 2001-07-25 Prettenhofer Anton Vorrichtung zum auspressen von flüssige bestandteile enthaltenden früchten
EP2714381A1 (fr) * 2011-05-26 2014-04-09 Green Cell Technologies (Pty) Ltd Procédé de mise sous pression d'une substance
CN106809409A (zh) * 2017-04-13 2017-06-09 东莞市永铠自动化科技有限公司 全自动瓶装灌装机的物料压实装置
CN113183509A (zh) * 2020-01-14 2021-07-30 新平兴业轻工机械制造有限公司 一种蔬菜挤压提汁装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH89794A (de) * 1920-04-07 1921-07-01 Nl Veenverwerking Mij Verfahren und Presse zur Entwässerung von Torf und ähnlichen Materialien.
FR604679A (fr) * 1925-09-24 1926-05-11 Marmonier Fils Ets Pressoir hydraulique continu
US2422895A (en) * 1944-07-20 1947-06-24 August F Habenicht Pressing apparatus
DE919587C (de) * 1951-11-14 1954-10-28 Gustav Meyer Vollautomatische Umlauf- und Pendelfilterpresse
FR1560212A (fr) * 1965-02-12 1969-03-21
DE3035877A1 (de) * 1980-09-23 1982-05-06 Schenk Filterbau Gmbh, 7076 Waldstetten Verfahren und vorrichtung zum entwaessern von fluessigkeit enthaltenden produkten
DE3113515A1 (de) * 1981-04-03 1982-11-04 H. Bieri AG Maschinenfabrik, 3097 Liebefeld, Bern "entwaesserungs- und verdichtungspresse fuer abfallstoffe"

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH89794A (de) * 1920-04-07 1921-07-01 Nl Veenverwerking Mij Verfahren und Presse zur Entwässerung von Torf und ähnlichen Materialien.
FR604679A (fr) * 1925-09-24 1926-05-11 Marmonier Fils Ets Pressoir hydraulique continu
US2422895A (en) * 1944-07-20 1947-06-24 August F Habenicht Pressing apparatus
DE919587C (de) * 1951-11-14 1954-10-28 Gustav Meyer Vollautomatische Umlauf- und Pendelfilterpresse
FR1560212A (fr) * 1965-02-12 1969-03-21
DE3035877A1 (de) * 1980-09-23 1982-05-06 Schenk Filterbau Gmbh, 7076 Waldstetten Verfahren und vorrichtung zum entwaessern von fluessigkeit enthaltenden produkten
DE3113515A1 (de) * 1981-04-03 1982-11-04 H. Bieri AG Maschinenfabrik, 3097 Liebefeld, Bern "entwaesserungs- und verdichtungspresse fuer abfallstoffe"

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392340A2 (fr) * 1989-04-08 1990-10-17 SCHOTTEN, Alfons Filtre-presse
EP0392340A3 (fr) * 1989-04-08 1993-03-31 SCHOTTEN, Alfons Filtre-presse
GB2238964A (en) * 1989-08-04 1991-06-19 Yamamoto Mfg Pressing oil from vegetable matter
WO1996023652A1 (fr) * 1995-02-01 1996-08-08 Oy Sne Environment Engineering Ltd. Presse de deshydratation
US5875707A (en) * 1995-02-01 1999-03-02 Oy Sne Environment Engineering Ltd. Dewatering press
AT407857B (de) * 1999-11-05 2001-07-25 Prettenhofer Anton Vorrichtung zum auspressen von flüssige bestandteile enthaltenden früchten
EP2714381A1 (fr) * 2011-05-26 2014-04-09 Green Cell Technologies (Pty) Ltd Procédé de mise sous pression d'une substance
EP2714381A4 (fr) * 2011-05-26 2014-10-29 Green Cell Technologies Pty Ltd Procédé de mise sous pression d'une substance
AU2012258526B2 (en) * 2011-05-26 2015-04-02 Rwh Holdings (Pty) Ltd A method of pressurizing a substance
CN106809409A (zh) * 2017-04-13 2017-06-09 东莞市永铠自动化科技有限公司 全自动瓶装灌装机的物料压实装置
CN113183509A (zh) * 2020-01-14 2021-07-30 新平兴业轻工机械制造有限公司 一种蔬菜挤压提汁装置

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