WO1984003661A1 - Boudineuse - Google Patents

Boudineuse Download PDF

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Publication number
WO1984003661A1
WO1984003661A1 PCT/AT1984/000002 AT8400002W WO8403661A1 WO 1984003661 A1 WO1984003661 A1 WO 1984003661A1 AT 8400002 W AT8400002 W AT 8400002W WO 8403661 A1 WO8403661 A1 WO 8403661A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
mouthpiece
screw
extrusion press
press according
Prior art date
Application number
PCT/AT1984/000002
Other languages
German (de)
English (en)
Inventor
Raimund Falkner
Original Assignee
Pfeifer Oskar
Raimund Falkner
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 Pfeifer Oskar, Raimund Falkner filed Critical Pfeifer Oskar
Priority to DE8484900698T priority Critical patent/DE3466190D1/de
Priority to AT84900698T priority patent/ATE29690T1/de
Priority to AU24936/84A priority patent/AU2493684A/en
Publication of WO1984003661A1 publication Critical patent/WO1984003661A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/224—Extrusion chambers
    • B30B11/225—Extrusion chambers with adjustable outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/246—Screw constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/24—Extrusion presses; Dies therefor using screws or worms
    • B30B11/248—Means preventing the material from turning with the screw or returning towards the feed hopper

Definitions

  • the invention relates to an extrusion press with a press cylinder with a mouthpiece, the side wall of which is divided by longitudinal slots into mutually expandable shell segments, which can be axially displaced under a spring load counteracting the pressing direction and whose cross-section can be widened.
  • Such an extrusion press which is described in more detail as a piston press, can be found, for example, in GB-A-904 619. It is used in particular for briquetting coal dust or the like. and has a press cylinder, the portion forming the mouthpiece, which tapers towards the outlet end, is split into at least two tongues, each of which is spread by means of a non-parallel pair of links articulated on the press frame and on the tongue upon axial displacement of the entire press cylinder .
  • the primary compression area of the Preßzyl nöers ein2 is a closed sleeve that moves axially against a coaxial return spring with increasing pressure.
  • GB-A-656 796 Another piston extrusion press can also be found in GB-A-656 796, in which the axially displaceable press cylinder is composed of four quarter shells, each quarter shell having a wedge-shaped outer surface which can be moved along wedge-shaped counter-surface spring-loaded, so that an axially parallel expansion occurs of the entire press cylinder is possible.
  • Such a principle of the expandable outlet cross-section of the mouthpiece can presumably be used in piston extrusion presses without any particular malfunctions, since when compressing the material, essentially only axial compression pressures are applied. will kick.
  • a back pressure is necessary, which takes place in the piston extrusion press mentioned at the beginning by the tapering of the mouthpiece, which has to be spread apart.
  • two different types of counterpressure injection are possible with screw presses.
  • a separate counterpressure device can be formed at the outlet end of the mouthpiece, which deviates axially when a certain pressing pressure is exceeded (for example according to DE-A-27 36 810), or the press screw is equipped with a compression section in which the screw is conical runs, or the incline of the screw flights is reduced. The latter more or less precludes toothed guide elements engaging in the screw flights in the compression section.
  • an extruder of the type mentioned form as a screw extruder which is arranged- suitable for briquetting of combustible waste, in which expandable from the displaceability shell segments' of the mouthpiece no problems in terms of strength strength ness of the briquettes and the Susceptibility to failure.
  • the mouthpiece can be pushed onto the outside of the press cylinder.
  • the mouthpiece can also be inserted into the press cylinder.
  • the compression section of the press screw lies exclusively in the mouthpiece. Even when inserting.
  • the shell segments are in particular formed by half-shells.
  • a preferred embodiment which provides a particularly simple construction of the screw press, provides that the mouthpiece is formed from two shell segments, one of which is rigidly connected to the press frame and the other is axially displaceable and radially expandable on the press frame .
  • a non-parallel pair of links is provided for each displaceable and expandable casing segment, which is articulated on four hinge bolts on the casing segment and the press frame.
  • the axial displacement of the jacket segment causes it to spread. Since it has now been shown that the extent of the spread would have to be smaller or larger under certain conditions in order to achieve an approximately uniform strength of the strand and to rule out blockages, particularly after downtimes, a preferred embodiment provides that the handlebar closer to the outlet opening in an abutment of the press frame is mounted, the distance to the second, fixed abutment can be changed.
  • Aus ⁇ formation is arranged in, for example, the variable abutment at one on the press frame swivel-mounted lever, whose pivot axis senk ⁇ right to the axis of the mouthpiece is aligned etc. are dependent upon the building up in the mouthpiece pressure a mere axial displacement, a mere spread and a combination of displacement that automatically sets itself in any ratio and spread possible.
  • a particularly simple embodiment avoids hinge pins on the links in that each link is pivotally mounted in the grooves of the axially shifting jacket segment and one of the abutments belonging to the press frame.
  • the links are formed, for example, by flat elements with rounded narrow sides which engage in the grooves.
  • the spring loading of the jacket segment is preferably carried out via the handlebars.
  • a one-armed lever extends from each link approximately parallel to the mouthpiece in the direction of the outlet end and is articulated on a guide part which acts essentially perpendicularly to the axis of the mouthpiece by a compression spring which is supported on the press frame .
  • a compression spring which is supported on the press frame .
  • one of the two jacket segments is rigidly connected to the press frame, it can be used as a frame-like abutment for the compression spring, so that each single-arm lever can consist of two arms fixed on both sides of the handlebar, and the guide part by one Mouthpiece surrounding U-shaped bracket is formed, the central web acts on the compression spring.
  • each displaceable and expandable jacket segment is that two pairs of guide parts are successively provided in the axial direction between the press frame and the axially displaceable and radially expandable jacket segment, the guide surfaces of which diverge on the outlet opening side, the divergence of the guide surface closer to the outlet opening-side end of the mouthpiece.
  • the guide parts arranged on the displaceable jacket segment preferably have plane guide surfaces which roll on roller bearings arranged on the press frame.
  • the roller bearing closer to the outlet opening can be rotated at its axial distance from the second roller bearing, for example it can be arranged on a pivotable bracket in order to achieve a spreading of the shell segment that is independent of the axial displacement.
  • the longitudinal guide element inserted into the longitudinal slot between the jacket segments can be formed, for example, by a toothed disk or by engagement elements arranged on an endless chain.
  • the guide element can be composed of rolling elements which are loosely lined up and run around in the axial plane of the press screw. If the rolling elements are formed by balls, so that essentially a cage-free ball bearing is used, the advantages known from the ball bearing of more favorable absorption of the forces acting obliquely to the pressing direction result.
  • the section of the longitudinal slot traversed by the balls is widened in this case, the ball diameter corresponding to the pitch of the compression section.
  • the longitudinal slots between the shell segments not only serve to enable the expansion, but also fulfill a further task in the screw press according to the invention
  • the material to be compressed By taking over the further longitudinal guidance of the strand formed on the longitudinal guide element until it emerges from the mouthpiece.
  • the material to be compressed also into the longitudinal slots, so that a rib is also formed on the strand through each longitudinal slot.
  • an end section which tapers into a tip preferably adjoins the compression section of the press screw, in which the pitch of the screw flights is smaller or decreases continuously.
  • the material is also fed and compressed into the core region of the strand, into which no material can be introduced in the compression section itself.
  • the strand emerging from the mouthpiece is divided into pieces of suitable length, or also breaks into them, due to its weight, which increases with increasing outlet length.
  • FIG. 1 shows a schematic side view of a screw press according to the invention for briquetting particularly combustible waste
  • FIG. 2 shows a horizontal section along the line II-II of FIG. 1
  • FIG. 7 shows a vertical section along line VII-VII of FIG. 2
  • FIG. 8 shows a horizontal section according to FIG. 2 in a spread position of the mouthpiece
  • FIG. 9 shows a horizontal section with a partial top view according to line IX-IX of FIG 1
  • FIG. 10 shows a horizontal section according to FIG. 2 through the mouthpiece of a second embodiment.
  • a screw press has a press frame 1 with a press cylinder 3, a mouthpiece 4 and a filling funnel 2 serving to feed the material.
  • the press screw 7 is composed of a cylindrical feed section 8, which begins below the filling funnel 2 and in which the screw-type slugs have a large incline, and a subsequent, tapering compression section 9. in which the incline of the screw flights is smaller, and together from an end section 10 running into a tip, in which the slope of the screw flights is reduced again.
  • the mouthpiece 4 adjoins the press cylinder 3, which comprises at most the feed section 8 of the press screw 7, the compression section 9 completely projecting beyond the press cylinder 3 being located within the mouthpiece 4.
  • the mouthpiece 4 is composed of two jacket segments 11, 12 formed by half-shells, which are separated over the entire length by two longitudinal slots 13, to which they terminate in cutting edges 50.
  • an end plate 36 is provided, which is connected to the press cylinder 3 and thus to the press frame 1.
  • the shell segment 11 is rigidly connected to the end plate 36, on the other hand, the second shell segment 12, as can be seen from the double arrows in FIG outlet-side end 41 is spreadable.
  • the movable jacket segment 12 is assigned two control devices 5, 6, of which the control device 6 closer to the outlet-side end 41 is axially adjustable in its entirety, as will be explained below.
  • a longitudinal guide element 15 which consists of a housing and therein in a circular or oval guide track around a core 39 loose, gap-free filled rolling elements 16, in particular balls.
  • the balls constantly engage in at least one screw flight in the compression section 9 and are circulated in their guideway by the screw rotation.
  • the pitch in the compression section 9 preferably corresponds to the ball diameter and the pitch depth approximately to the ball radius.
  • the material to be pressed acts on the left side of the rolling elements 16 in FIG. 3.
  • the rolling elements are thereby pressed to the right onto the jacket segment 11, which is rigidly fastened in the press frame 1.
  • the casing segment 11 Due to its rigid fastening, the casing segment 11 also forms a support for the compression section 9 of the press screw 7, which is also fastened in the direction of the casing segment 11.
  • the jacket segment 12 on the left in FIG. An excessive compression pressure is reduced without intermediate elements or the like directly via the movable shell segment 12.
  • the longitudinal slots 13 between the two jacket segments 11, 12 are in the area close to the press cylinder 9 from each other covers parallel side plates 18 which are attached to the end plate 36.
  • the rigid * shell segment 11 is connected to the side plates 18, while they limit a horizontal guide slot for the movable shell segment 12.
  • Each of the two control devices 5 and 6 consists of an abutment 20 and 21 assigned to the movable jacket segment 12, and an abutment 22 and 23 assigned to the press frame 1, between the
  • Abutments 20, 22 or 21, 23 inserted links 24 or 25, as well as parts 26 to 34 associated with them, which counteract the movement of the casing segment 12.
  • the two abutments 20 are on the movable casing segment 12 or on an outer reinforcing strip 19, 21 formed as transverse strips, in which grooves perpendicular to the pressing direction are inserted, which serve as bearing surfaces for each of the links 24, 25.
  • the links 24, 25 are each formed by a flat element, etv / a a flat profile web, the narrow edges engaging in the grooves are rounded.
  • the abutments 22, 23 assigned to the press cylinder have the same bearing grooves for the links 24, 25 and form a central web of U-shaped brackets 33, 27.
  • OMP Limitation of the guide part 28 with compression spring 29 is achieved by two limiting bodies 30 arranged on the rigid jacket segment 11.
  • the bracket 33 of the control device 5 near the press cylinder is firmly connected with its side parts to the side plates 18, so that its abutment 22 is rigidly arranged with respect to the press frame 1. Since the control device 6 is provided near the exit end 41 of the mouthpiece 4, is to have a larger space than • it can be achieved with a rigid coupling with the control device 5, the two side parts of the bracket are extended 27 of the control device 6 and extending transversely via the side plates 18. On these, they are articulated on a bolt 34 beyond the rigid shell segment 11. The side parts of the bracket 27 and the
  • Guide part 28 extend substantially parallel.
  • the two links 24, 25 are at rest with different inclinations to the pivot axis 35, the angle to a cross-sectional plane is, for example, 10 ° to 15 ° for the link 24, and at least 30 ° for the link 25. If the pressing pressure building up in the mouthpiece 4 through the sealing section 9 now exceeds the desired or required extent and can be adjusted with the aid of the adjusting screws 31, then an evasive movement of the movable shell segment 12 begins, which is either exclusively axial, exclusively radial , but usually will be a combination of both, but there is no specific ratio.
  • bracket 27 of the control device 6 does not pivot, on the other hand a larger spread is required, the impossibility of which was responsible for the blockages which occurred in the prior art, so the bracket 27 is pivoted cylinder presses' side, increases 25 wherein the inclination of the link (shown exaggerated in Fig. 8).
  • the shell segments 11, 12 consist in particular of a corrosion-resistant material, so that even when the screw press is at a long standstill, the plug remaining in the mouthpiece 4 does not bind to the shell segments 11, 12, and the screw press can be put into operation again without difficulty.
  • a variant of the mouthpiece structure is shown in the embodiment according to FIG. 10.
  • two guide parts 42, 43 provided with guide surfaces 44, 45 of different inclination are attached to the movable jacket segment 12 in this embodiment.
  • the press frame 1 is assigned two roller bearings 46, 47, which, when the casing segment 12 is axially displaced, on the guide
  • OMPI unroll surfaces 44.45 The guide surface 45 closer to the outlet end 11 is limited by flange-like projections, an adjustable compression spring 49 extending in the axial direction being supported on the projection 48 on the outlet end.
  • the representation according to Fig. 10 should be understood to mean only schematically in the 'essential. It would also be self-evident in this embodiment, too, to design the control device 6 closer to the outlet end 41 at a distance from the control device 5 fixed to the frame, for example to arrange it on a swivel bracket in the manner described, in which case a pair of compression springs which can be used independently of one another is also used here is provided.
  • a wing 40 rotatable about its longitudinal axis is arranged at least on one side laterally above the feed section 8 of the press screw 7 and rotatable parallel to the press screw 7.
  • the wing 40 is made, for example, of rubber or rubber-like material and serves to avoid bridging of the material to be briquetted in the lower part of the filling funnel 2.
  • This preferably also has a comminution device (not shown), with each stirring blade 40 and being used for the press screw 7 the
  • Comminution device a common drive is provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Glass Compositions (AREA)
  • Formation And Processing Of Food Products (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Inert Electrodes (AREA)
  • Paper (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

Dans une boudineuse à vis pour former des briquettes à partir de déchets combustibles de différente composition, qui possède un cylindre de presse (3) et un orifice (4) s'y raccordant, le segment de compression se réduisant (9) de la vis à pression (7) se trouve à l'extérieur du cylindre de presse (3) exclusivement dans l'orifice (4) qui possède des segments d'enveloppe (11, 12) séparés par des fentes longitudinales (13). Dans le segment de compression (9) est introduit dans l'une des fentes longitudinales (3) un élément de guidage longitudinal (15) conçu pour l'extrusion qui se forme et s'engageant dans la vis à pression (7). On prévoit de préférence deux segments d'enveloppe (11, 12) dont l'un (12) est guidé axialement de manière déplaçable vers le cylindre de presse (3). Les paliers de section transversale qui ne font pas le tour se trouvent entre l'orifice (4) et le cylindre de presse (3) au-delà du segment de compression (9) dans le segment d'alimentation (8) de la vis à pression (7), dans lequel est encore transporté en vrac le matériau à utiliser pour former les briquettes. Le segment d'enveloppe mobile (12) peut être élargi à l'extrémité de sortie (41), le déplacement et l'élargissement réagissant de manière antagoniste envers deux dispositifs de régulation (5, 6) chargés par ressort et de préférence indépendants l'un de l'autre.
PCT/AT1984/000002 1983-03-17 1984-02-10 Boudineuse WO1984003661A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8484900698T DE3466190D1 (en) 1983-03-17 1984-02-10 Extrusion press
AT84900698T ATE29690T1 (de) 1983-03-17 1984-02-10 Strangpresse.
AU24936/84A AU2493684A (en) 1983-03-17 1984-02-10 Strangpresse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT94283 1983-03-17

Publications (1)

Publication Number Publication Date
WO1984003661A1 true WO1984003661A1 (fr) 1984-09-27

Family

ID=3503382

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1984/000002 WO1984003661A1 (fr) 1983-03-17 1984-02-10 Boudineuse

Country Status (5)

Country Link
EP (1) EP0141821B1 (fr)
AT (1) ATE29690T1 (fr)
AU (1) AU2493684A (fr)
DE (1) DE3466190D1 (fr)
WO (1) WO1984003661A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521926A1 (de) * 1985-06-19 1987-01-02 Koeb & Schaefer Ohg Brikettiermaschine zum brikettieren von fasrigen stoffen
EP0359285A2 (fr) * 1988-09-16 1990-03-21 Franz Haimer Dispositif pour agglomérer du brin végétal, notamment de paille
EP0408964A1 (fr) * 1989-07-17 1991-01-23 Alois Pöttinger Maschinenfabrik GmbH Presse à vis
WO1991004150A1 (fr) * 1989-09-15 1991-04-04 Franz Haimer Dispositif d'aglomeration de matiere vegetale, en particulier de paille et matieres analogues

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521560A1 (de) * 1995-06-19 1997-01-09 Lindemann Maschfab Gmbh Zweiwellen-Kompaktverdichter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB904619A (en) * 1961-03-21 1962-08-29 Robert Desmond Parker Improvements in machines for consolidating granular or other material by extrusion
US3121387A (en) * 1961-06-07 1964-02-18 Avco Corp Extruder with compacting force control mechanism
DE1217056B (de) * 1963-04-01 1966-05-18 Bayer Ag Einwellen-Schneckenstrangpresse
DE2551369A1 (de) * 1974-11-18 1976-05-20 Gen Electric Vorrichtung zum regeln des extrusionswiderstandes von einem stabaehnlichen koerper durch eine pressduese
WO1984001125A1 (fr) * 1982-09-16 1984-03-29 Pfeifer Oskar Extrudeuse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB904619A (en) * 1961-03-21 1962-08-29 Robert Desmond Parker Improvements in machines for consolidating granular or other material by extrusion
US3121387A (en) * 1961-06-07 1964-02-18 Avco Corp Extruder with compacting force control mechanism
DE1217056B (de) * 1963-04-01 1966-05-18 Bayer Ag Einwellen-Schneckenstrangpresse
DE2551369A1 (de) * 1974-11-18 1976-05-20 Gen Electric Vorrichtung zum regeln des extrusionswiderstandes von einem stabaehnlichen koerper durch eine pressduese
WO1984001125A1 (fr) * 1982-09-16 1984-03-29 Pfeifer Oskar Extrudeuse

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3521926A1 (de) * 1985-06-19 1987-01-02 Koeb & Schaefer Ohg Brikettiermaschine zum brikettieren von fasrigen stoffen
EP0359285A2 (fr) * 1988-09-16 1990-03-21 Franz Haimer Dispositif pour agglomérer du brin végétal, notamment de paille
EP0359285A3 (en) * 1988-09-16 1990-11-22 Franz Haimer Apparatus for briquetting plant material, in particular stalks and the like
EP0408964A1 (fr) * 1989-07-17 1991-01-23 Alois Pöttinger Maschinenfabrik GmbH Presse à vis
WO1991004150A1 (fr) * 1989-09-15 1991-04-04 Franz Haimer Dispositif d'aglomeration de matiere vegetale, en particulier de paille et matieres analogues
US5302102A (en) * 1989-09-15 1994-04-12 Franz Haimer Equipment for briqueting vegetal material in particular stalk-plant materials

Also Published As

Publication number Publication date
EP0141821A1 (fr) 1985-05-22
DE3466190D1 (en) 1987-10-22
EP0141821B1 (fr) 1987-09-16
AU2493684A (en) 1984-10-09
ATE29690T1 (de) 1987-10-15

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