EP0108763B1 - Screw press with juxtaposed screws - Google Patents

Screw press with juxtaposed screws Download PDF

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Publication number
EP0108763B1
EP0108763B1 EP83901356A EP83901356A EP0108763B1 EP 0108763 B1 EP0108763 B1 EP 0108763B1 EP 83901356 A EP83901356 A EP 83901356A EP 83901356 A EP83901356 A EP 83901356A EP 0108763 B1 EP0108763 B1 EP 0108763B1
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EP
European Patent Office
Prior art keywords
screw
screws
elements
housing
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
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EP83901356A
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German (de)
French (fr)
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EP0108763A1 (en
Inventor
Max Gutknecht
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Individual
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Individual
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Priority to AT83901356T priority Critical patent/ATE23483T1/en
Publication of EP0108763A1 publication Critical patent/EP0108763A1/en
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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
    • B30B9/12—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
    • B30B9/121—Screw constructions
    • 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
    • B30B9/16—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 operating with two or more screws or worms

Definitions

  • the invention relates to a screw press with two screws lying next to one another, consisting of a housing, an inlet-side loading opening, an outlet-side shaping or briquetting head and two screw shafts driven by a gear, which are composed of individual screw elements provided with a core cylinder, the housing is divided into the length of the screw elements corresponding housing elements 3-6, between which there is a throttle device 19 which blocks the free cross section of the screws with the formation of a passage gap.
  • Screw presses are already known (DE-A-1 944 642) in which a single-screw design is used for processing the material to be treated, in which both the screw and the housing are divided into individual elements.
  • a throttle device is installed between two elements, the through opening of which is delimited by a tapering inner and outer surface.
  • the outer surface is designed to be axially displaceable.
  • the relatively large axial space requirement between two elements is disadvantageous.
  • only a pressing of the material without substantial heating of the same is possible with an annular nozzle-like design of the through opening.
  • any material to be processed can be minced, dewatered and compacted in a compact manner bring.
  • the throttle is a throttle disc 19 located between two housing elements, which constricts the free cross section of the screw flights of the screws 10, 11 to form an adjustable throttle gap on the circumference of the core cylinder of the screw and is formed in two parts, whereby with one part 20 a bottom throttle gap and with the other part 21 a top throttle gap is adjustable and the other part has a width that is at least equal to twice the core diameter and a pitch.
  • the two-screw press shown in FIGS. 1 and 2 has a housing 1 which is composed of housing elements 2, 3, 4, 5, 6, the housing element 2 deviating from the other housing elements 3-6 and having a loading opening 7.
  • the housing elements 2-6 are connected by screws 8 or 9 bolts.
  • Screw elements 14 are attached to a worm shaft 12, 13, the length of which corresponds to that of the housing elements 2-6. They can be single or multi-course and have the same or a different pitch. The sequence of the screw elements 14 and their number can be adapted to the respective material to be processed.
  • a tensioning shaft 15 is screwed in, which extends through the worm elements 14 to the end of the last worm element and carries a tensioning flange 16 at its end, is screwed into the tensioning screws 17, which are in a in the last worm element 14 supported clamping head 18 are mounted and allow the clamping of the clamping shaft 15 and thus the screw elements 14 by turning.
  • a throttle disc is arranged between the individual housing elements 3-6, the design of which can be seen in FIG. 3.
  • the throttle disk 19, with which a narrow gap is formed around the core diameter of the screw elements 14, is composed of two parts 20, 21, which have corresponding bores 22 or slots 23, with the aid of which they pass through between the housing elements 3-6 Bolts 9 are held.
  • the slots 23 in the part 21 on the apex enable the gap between the throttle disk 19 and the core diameter of the screw elements 14 to be set differently.
  • the throttle disk 19 enables the most varied materials to be processed practically with the same screw press.
  • the housing elements 3-6, which are, for example, in two parts in FIGS. 1 and 2, and the screw elements 14 need not be changed. An adaptation to different types Materials can be achieved in a simple manner by changing the housing 1 and, accordingly, the screws 10, 11 by adding or removing further housing and screw elements.
  • the two worm shafts 12, 13 protrude from the housing 1 on the inlet side and extend through a gear transmission and are supported on an axial bearing 24.
  • the support can be done in various ways, e.g. B. by thrust roller bearings. It is essential here that the force exerted by the two worm shafts 12, 13 on the axial bearing 24 is diverted to the housing 1 via tie rods 25 which are fastened in the housing 1, as a result of which a self-contained force flow is achieved.
  • the transmission 26, preferably a gear transmission, serves to couple a drive motor and to drive the two worm shafts 12, 13 via the transmission 26.
  • An expansion pressure sensor 27 is provided between the housing 1 and the gear 26.
  • the worm shafts 12, 13 passing through the expansion pressure transducer 27 are supported therein by means of bearings. If spreading forces occur on the worm shafts 12, 13, these are supported via their bearings on the spreading pressure sensor 27.
  • the expansion pressure transducer 27 is not supported on the housing 1 or on the gear 26, but is guided loosely on the tie rods 25.
  • a shaping or briquetting head 28 is attached to the outlet side of the screw press. The material emerging from the screw press can thereby be given a specific shape. Guides 29 serve to discharge the ejected material.
  • One or more openings 30 can be arranged in the housing elements 3-6 at the top and / or at the bottom. There, juice or steam that collects or flows out during the pressing process can be sucked off and sent for further treatment. It is also possible that juice squeezed out of the openings closer to the loading opening 7 and steam can be canceled at the openings further away. In this regard too, the screw press can be adapted to the respective requirements without major changes.
  • Fig. 4 is a plant for processing green mass, z. B. grass.
  • the screw shafts 12, 13 of the screw press are driven via the gear 26 by a motor 31 which is coupled to a second motor 32.
  • the juice squeezed out of the green mass is drawn in by a peristaltic pump 33 and conveyed into a flocculation container 34.
  • the flocculant is added there by means of a schematically indicated device 35, the gel which is formed in this case being discharged through a line 36 and the residual liquid through a line 37.
  • the two further openings 31 are used to extract damper by a fan 39 or a vacuum pump via a line 38.
  • the screw press described thus solves the problem of drying materials on the one hand and briquetting on the other hand. Liquids and vapors can be easily extracted and processed separately. It is essential that the press described consists of standardized elements, i.e. H. can be assembled from the housing elements 2-6 and the screw elements 14, and the corresponding number of standardized throttle disks 19 can also be used. During the operation of such a press, it has surprisingly been found that the power consumption of the screw press is comparatively low, so that less power is required compared to other drying processes, and that a multitude of functions can be solved with the described method and the described screw press. Mechanical drying is of particular importance. H. without the addition of heat, and the hygienization achievable with it, d. H.
  • the adaptation of the screw press to the different materials to be processed and which vary greatly in composition is determined by the number and arrangement of the screw elements 14, e.g. B. with opposite slope, and - with two screws 10, 11 - by the mode, z. B. with up or down counter-rotating direction and with right or left rotation of both screws, quickly and easily achieved.
  • the material of the screw elements 14 is expediently resistant to abrasion, e.g. B. high-alloy steel, which can still be fitted with hard metal on heavily wearing parts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Press Drives And Press Lines (AREA)
  • Treatment Of Sludge (AREA)
  • Paper (AREA)

Abstract

The screw press has a frame (1) comprised of frame elements (2-6) wherein two screws (10, 11) having screw elements (14) are arranged. Between the frame elements (3-6) choke discs (19) are arranged to reduce the passage of the screws (10) up to a choke slot. The screws (10, 11) are driven by a gear (26). The shafts of the screws extend through the gear (26) and bear on an axial bearing which is secured to the frame by traction bars (25). Through such arrangement, the screw press may be used to process materials which are very different, without important transformation, the liquid contained in the materials being drawn and the solid material dried and transformed into briquettes by a molding head.

Description

Die Erfindung betrifft eine Schneckenpresse mit zwei nebeneinander liegenden Schnecken, bestehend aus einem Gehäuse, einer eintrittseitigen Beschickungsöffnung, einem austrittseitigen Form- bzw. Brikettierkopf und zwei über ein Getriebe angetriebenen Schneckenwellen, welche aus einzelnen, mit einem Kernzylinder versehenen Schneckenelementen zusammengesetzt sind, wobei das Gehäuse in der Länge der Schneckenelemente entsprechende Gehäuseelemente 3-6, unterteilt ist, zwischen welchen eine Drosselvorrichtung 19 liegt, die den freien Querschnitt der Schnecken unter Bildung eines Durchgangspaltes sperrt.The invention relates to a screw press with two screws lying next to one another, consisting of a housing, an inlet-side loading opening, an outlet-side shaping or briquetting head and two screw shafts driven by a gear, which are composed of individual screw elements provided with a core cylinder, the housing is divided into the length of the screw elements corresponding housing elements 3-6, between which there is a throttle device 19 which blocks the free cross section of the screws with the formation of a passage gap.

Es sind bereits Schneckenpressen bekannt (DE-A-1 944 642), bei denen zur Verarbeitung des zu behandelnden Materials eine Einschneckenausführung verwendet wird, bei der sowohl die Schnecke als auch das Gehäuse in einzelne Elemente unterteilt ist. Zwischen zwei Elementen ist eine Drosselvorrichtung eingebaut, deren Durchgangsöffnung durch eine sich verjüngende Innen- und Aussenfläche begrenzt ist. Zur Einstellung der Grösse der Durchgangsöffnung ist die Aussenfläche axial verschiebbar ausgebildet. Nachteilig ist der verhältnismässig grosse axiale Platzbedarf zwischen zwei Elementen. Zudem ist mit einer ringdüsenartigen Ausbildung der Durchgangsöffnung nur ein Pressen des Materials ohne wesentliche Erwärmung desselben möglich. Mit Hilfe der einstellbaren Durchgangsöffnung ist es zwar möglich, das Pressen verschiedener Materialien durchzuführen, jedoch ist es nicht möglich oder dann nur mit einer grossen Anzahl solcher Drosselvorrichtungen, beliebiges, zu verarbeitendes Material in rationeller Weise zu zerkleinern, zu entwässern und in eine kompakte Form zu bringen.Screw presses are already known (DE-A-1 944 642) in which a single-screw design is used for processing the material to be treated, in which both the screw and the housing are divided into individual elements. A throttle device is installed between two elements, the through opening of which is delimited by a tapering inner and outer surface. To adjust the size of the through opening, the outer surface is designed to be axially displaceable. The relatively large axial space requirement between two elements is disadvantageous. In addition, only a pressing of the material without substantial heating of the same is possible with an annular nozzle-like design of the through opening. With the help of the adjustable through opening, it is possible to carry out the pressing of different materials, but it is not possible or then only with a large number of such throttling devices, any material to be processed can be minced, dewatered and compacted in a compact manner bring.

Hier setzt die Erfindung ein, der die Aufgabe zugrunde liegt, eine Schneckenpresse der eingangs beschriebenen Art so auszugestalten, dass einerseits eine Vielzahl unterschiedlicher Materialien zerkleinert, entwässert und in eine kompakte, für die Weiterverwendung geeignete Form gebracht und andererseits dieses Verarbeitung mit verhältnismässig geringem Energiebedarf durchgeführt werden kann.This is where the invention comes in, which is based on the object of designing a screw press of the type described at the outset in such a way that, on the one hand, a large number of different materials are crushed, dewatered and brought into a compact form suitable for further use and, on the other hand, this processing is carried out with a relatively low energy requirement can be.

Diese Aufgabe wird gemäss der Erfindung dadurch gelöst, dass die Drossel eine zwischen zwei Gehäuseelementen liegende Drosselscheibe 19 ist, welche den freien Querschnitt der Schneckengänge der Schnecken 10, 11 unter Bildung eines einstellbaren Drosselspaltes am Umfang des Kernzylinder der Schnecke einengt und zweiteilig ausgebildet ist, wobei mit dem einen Teil 20 ein bodenseitiger Drosselspalt und mit dem anderen Teil 21 ein scheitelseitiger Drosselspalt einstellbar ist und der andere Teil eine Breite aufweist, die mindestens gleich dem doppelten Kerndurchmesser und einer Ganghöhe ist.This object is achieved according to the invention in that the throttle is a throttle disc 19 located between two housing elements, which constricts the free cross section of the screw flights of the screws 10, 11 to form an adjustable throttle gap on the circumference of the core cylinder of the screw and is formed in two parts, whereby with one part 20 a bottom throttle gap and with the other part 21 a top throttle gap is adjustable and the other part has a width that is at least equal to twice the core diameter and a pitch.

Die Erfindung ist in der Zeichnung in einem Ausführungsbeispiel dargestellt und nachfolgend beschrieben. Es zeigen :

  • Figur 1 eine Seitenansicht einer Schneckenpresse gemäss der Erfindung,
  • Figur 2 eine Draufsicht der Schneckenpresse nach Fig. 1, teilweise im Schnitt,
  • Figur 3 eine Ansicht einer in der Schneckenpresse nach Fig. 1 und 2 eingesetzten Drosselscheibe und
  • Figur 4 eine schematische Darstellung des Einsatzes der Schneckenpresse nach Fig. 1 und 2 bei der Verarbeitung einer Grünmasse, z. B. Gras.
The invention is shown in the drawing in one embodiment and described below. Show it :
  • FIG. 1 shows a side view of a screw press according to the invention,
  • FIG. 2 shows a top view of the screw press according to FIG. 1, partly in section,
  • Figure 3 is a view of a throttle disc used in the screw press according to FIGS. 1 and 2 and
  • Figure 4 is a schematic representation of the use of the screw press according to Fig. 1 and 2 when processing a green mass, for. B. grass.

Die in Fig. 1 und 2 dargestellte Zwei-Schneckenpresse weist ein Gehäuse 1 auf, das aus Gehäuseelementen 2, 3, 4, 5, 6 zusammengesetzt ist, wobei das Gehäuseelement 2 von den übrigen Gehäuseelementen 3-6 abweicht und eine Beschickungsöffnung 7 aufweist. Die Gehäuseelemente 2-6 sind durch Schrauben 8 oder Schraubenbolzen 9 miteinander verbunden.The two-screw press shown in FIGS. 1 and 2 has a housing 1 which is composed of housing elements 2, 3, 4, 5, 6, the housing element 2 deviating from the other housing elements 3-6 and having a loading opening 7. The housing elements 2-6 are connected by screws 8 or 9 bolts.

Im Innern des Gehäuses 1 sind zwei Schnecken 10, 11 gelagert, die aus mehreren Teilen zusammengesetzt sind, siehe Fig. 1.Inside the housing 1, two screws 10, 11 are mounted, which are composed of several parts, see FIG. 1.

Auf einer Schneckenwelle 12, 13 sind Schneckenelemente 14 aufgesteckt, deren Länge derjenigen der Gehäuseelemente 2-6 entspricht. Sie können ein- oder mehrgängig sowie mit der gleichen oder einer unterschiedlichen Steigung versehen sein. Die Folge der Schneckenelemente 14 und ihre Zahl kann dem jeweiligen zu verarbeitenden Material angepasst werden. An der Stirnseite der Schneckenwellen 12, 13 ist eine Spannwelle 15 eingeschraubt, die sich durch die Schneckenelemente 14 bis gegen das Ende des letzten Schneckenelementes erstreckt und an ihrem Ende einen Spannflansch 16 trägt, in den Spannschrauben 17 eingeschraubt werden, die in einem im letzten Schneckenelement 14 abgestützten Spannkopf 18 gelagert sind und durch Drehen das Spannen der Spannwelle 15 und damit der Schneckenelemente 14 ermöglichen.Screw elements 14 are attached to a worm shaft 12, 13, the length of which corresponds to that of the housing elements 2-6. They can be single or multi-course and have the same or a different pitch. The sequence of the screw elements 14 and their number can be adapted to the respective material to be processed. On the end face of the worm shafts 12, 13, a tensioning shaft 15 is screwed in, which extends through the worm elements 14 to the end of the last worm element and carries a tensioning flange 16 at its end, is screwed into the tensioning screws 17, which are in a in the last worm element 14 supported clamping head 18 are mounted and allow the clamping of the clamping shaft 15 and thus the screw elements 14 by turning.

Zwischen den einzelnen Gehäuseelementen 3-6 ist eine Drosselscheibe angeordnet, deren Ausbildung aus Fig. 3 ersichtlich ist. Die Drosselscheibe 19, mit der ein enger Spalt um den Kerndurchmesser der Schneckenelemente 14 gebildet wird, setzt sich aus zwei Teilen 20, 21 zusammen, die entsprechende Bohrungen 22 bzw. Schlitze 23 aufweisen, mit Hilfe welcher sie zwischen den Gehäuseelementen 3-6 durch die Schraubenbolzen 9 gehalten sind. Die Schlitze 23 im scheitelseitigen Teil 21 ermöglichen eine unterschiedliche Einstellung des Spaltes zwischen der Drosselscheibe 19 und dem Kerndurchmesser der Schneckenelemente 14. Durch die Drosselscheibe 19 kann erreicht werden, dass die verschiedensten Materialien praktisch mit der gleichen Schneckenpresse verarbeitet werden können. Die Gehäuseelemente 3-6, die beispielsweise in Fig. 1 und 2 zweiteilig sind, und die Schneckenelemente 14 brauchen nicht verändert zu werden. Eine Anpassung an verschiedenartige Materialien kann in einfacher Weise dadurch erreicht werden, dass das Gehäuse 1 und dementsprechend die Schnecken 10, 11 durch Zufügen oder Wegnehmen weiterer Gehäuse- und Schneckenelemente verändert wird.A throttle disc is arranged between the individual housing elements 3-6, the design of which can be seen in FIG. 3. The throttle disk 19, with which a narrow gap is formed around the core diameter of the screw elements 14, is composed of two parts 20, 21, which have corresponding bores 22 or slots 23, with the aid of which they pass through between the housing elements 3-6 Bolts 9 are held. The slots 23 in the part 21 on the apex enable the gap between the throttle disk 19 and the core diameter of the screw elements 14 to be set differently. The throttle disk 19 enables the most varied materials to be processed practically with the same screw press. The housing elements 3-6, which are, for example, in two parts in FIGS. 1 and 2, and the screw elements 14 need not be changed. An adaptation to different types Materials can be achieved in a simple manner by changing the housing 1 and, accordingly, the screws 10, 11 by adding or removing further housing and screw elements.

Die beiden Schneckenwellen 12, 13 ragen auf der Eintrittseite aus dem Gehäuse 1 und erstrecken sich durch ein Zahnradgetriebe und stützen sich an einem Axiallager 24 ab. Die Abstützung kann auf verschiedene Weise erfolgen, z. B. durch Axialwälzlager. Wesentlich ist hierbei, dass die von den beiden Schneckenwellen 12, 13 auf das Axiallager 24 ausgeübte Kraft über Zugstangen 25, die im Gehäuse 1 befestigt sind, auf das Gehäuse 1 abgeleitet wird, wodurch ein in sich geschlossener Kraftfluss erreicht wird. Das Getriebe 26, vorzugsweise ein Zahnradgetriebe, dient dazu, einen Antriebsmotor anzukuppeln und über das Getriebe 26 die beiden Schneckenwellen 12, 13 anzutreiben.The two worm shafts 12, 13 protrude from the housing 1 on the inlet side and extend through a gear transmission and are supported on an axial bearing 24. The support can be done in various ways, e.g. B. by thrust roller bearings. It is essential here that the force exerted by the two worm shafts 12, 13 on the axial bearing 24 is diverted to the housing 1 via tie rods 25 which are fastened in the housing 1, as a result of which a self-contained force flow is achieved. The transmission 26, preferably a gear transmission, serves to couple a drive motor and to drive the two worm shafts 12, 13 via the transmission 26.

Zwischen dem Gehäuse 1 und dem Getriebe 26 ist ein Spreizdruckaufnehmer 27 vorgesehen. Die durch den Spreizdruckaufnehmer 27 durchgehenden Schneckenwellen 12, 13 werden darin mittels Lagern gelagert. Treten Spreizkräfte auf den Schneckenwellen 12, 13 auf, stützen sich diese über ihre Lager am Spreizdruckaufnehmer 27 ab. Der Spreizdruckaufnehmer 27 wird nicht am Gehäuse 1 oder am Getriebe 26 abgestützt, sondern ist lose an den Zugstangen 25 geführt. An der Austrittseite der Schneckenpresse ist ein Form- bzw. Brikettierkopf 28 befestigt. Dem aus der Schneckenpresse austretenden Material kann dadurch eine bestimmte Form gegeben werden. Führungen 29 dienen der Ableitung des ausgestossenen Materials.An expansion pressure sensor 27 is provided between the housing 1 and the gear 26. The worm shafts 12, 13 passing through the expansion pressure transducer 27 are supported therein by means of bearings. If spreading forces occur on the worm shafts 12, 13, these are supported via their bearings on the spreading pressure sensor 27. The expansion pressure transducer 27 is not supported on the housing 1 or on the gear 26, but is guided loosely on the tie rods 25. A shaping or briquetting head 28 is attached to the outlet side of the screw press. The material emerging from the screw press can thereby be given a specific shape. Guides 29 serve to discharge the ejected material.

In den Gehäuseelementen 3-6 können oben und/oder unten eine oder mehrere Oeffnungen 30 angeordnet sein. Dort kann während des Pressvorgangs sich sammelnder oder ausfliessender Saft oder Dampf abgesaugt und einer weiteren Behandlung zugeleitet werden. Es ist hierbei auch möglich, dass aus den näher bei der Beschickungsöffnung 7 liegenden Oeffnungen ausgepresster Saft und bei den weiter entfernten Oeffnungen Dampf abgesagt werden kann. Auch in dieser Hinsicht kann die Schneckenpresse ohne wesentliche Aenderungen den jeweiligen Anforderungen angepasst werden.One or more openings 30 can be arranged in the housing elements 3-6 at the top and / or at the bottom. There, juice or steam that collects or flows out during the pressing process can be sucked off and sent for further treatment. It is also possible that juice squeezed out of the openings closer to the loading opening 7 and steam can be canceled at the openings further away. In this regard too, the screw press can be adapted to the respective requirements without major changes.

In Fig. 4 ist schematisch eine Anlage zur Verarbeitung von Grünmasse, z. B. Gras, dargestellt. Die Schneckenwellen 12, 13 der Schneckenpresse werden über das Getriebe 26 durch einen Motor 31 angetrieben, der mit einem zweiten Motor 32 gekuppelt ist. Aus den ersten beiden Oeffnungen 30 wird der aus der Grünmasse ausgepresste Saft von einer Schlauchpumpe 33 angesaugt und in einen Flockungsbehälter 34 gefördert. Dort wird durch eine schematisch angedeutete Vorrichtung 35 das Flockungsmittel zugegeben, wobei das sich hierbei bildende Gel durch eine Leitung 36 und die Restflüssigkeit durch eine Leitung 37 abgeleitet wird. Die beiden weiteren Oeffnungen 31 dienen der Absaugung von Dämpren durch einen Ventilator 39 oder eine Vakuumpumpe über eine Leitung 38.In Fig. 4 is a plant for processing green mass, z. B. grass. The screw shafts 12, 13 of the screw press are driven via the gear 26 by a motor 31 which is coupled to a second motor 32. From the first two openings 30, the juice squeezed out of the green mass is drawn in by a peristaltic pump 33 and conveyed into a flocculation container 34. The flocculant is added there by means of a schematically indicated device 35, the gel which is formed in this case being discharged through a line 36 and the residual liquid through a line 37. The two further openings 31 are used to extract damper by a fan 39 or a vacuum pump via a line 38.

Die beschriebe Schneckenpresse löst somit das Problem, Materialien einerseits zu trocknen und andererseits gleichzeitig zu brikettieren. Hierbei anfallende Flüssigkeiten und Dämpfe können leicht abgesaugt und getrennt verarbeitet werden. Wesentlich ist, dass die beschrieben Presse aus standardisierten Elementen, d. h. aus den Gehäuseelementen 2-6 und den Schneckenelementen 14, zusammengesetzt werden kann, wobei auch die entsprechende Zahl standardisierter Drosselscheiben 19 eingesetzt werden kann. Es hat sich beim Betrieb einer solchen Presse überraschend gezeigt, dass die Leistungsaufnahme der Schneckenpresse verhältnismässig gering ist, so dass sich gegenüber anderen Trocknungsverfahren ein geringerer Leistungsbedarf ergibt, und dass eine Vielzahl von Funktionen mit dem beschriebenen Verfahren und der beschriebenen Schneckenpresse gelöst werden können. Von besonderer Bedeutung sind die mechanische Trocknung, d. h. ohne Wärmezufuhr, und die damit erzielbare Hygienisierung, d. h. eine weitgehende Keimfreiheit und die damit erreichbare Lagerfähigkeit des Endproduktes. Die Anpassung der Schneckenpresse an die zu verarbeitenden unterschiedlichen und in der Zusammensetzung stark variierenden Materialien wird durch die Zahl und die Anordnung der Schneckenelemente 14, z. B. mit entgegengesetzter Steigung, und - bei zwei Schnecken 10, 11 - durch die Betriebsart, z. B. mit oben oder unten gegenläufiger Drehrichtung sowie mit Rechts- oder Linkslauf beider Schnecken, schnell und problemlos erreicht. Das Material der Schneckenelemente 14 ist zweckmässig abriebfest, z. B. hochlegierter Stahl, der an stark verschleissenden Partien noch mit Hartmetall bestückt sein kann.The screw press described thus solves the problem of drying materials on the one hand and briquetting on the other hand. Liquids and vapors can be easily extracted and processed separately. It is essential that the press described consists of standardized elements, i.e. H. can be assembled from the housing elements 2-6 and the screw elements 14, and the corresponding number of standardized throttle disks 19 can also be used. During the operation of such a press, it has surprisingly been found that the power consumption of the screw press is comparatively low, so that less power is required compared to other drying processes, and that a multitude of functions can be solved with the described method and the described screw press. Mechanical drying is of particular importance. H. without the addition of heat, and the hygienization achievable with it, d. H. extensive sterility and the storage life of the end product that can be achieved with it. The adaptation of the screw press to the different materials to be processed and which vary greatly in composition is determined by the number and arrangement of the screw elements 14, e.g. B. with opposite slope, and - with two screws 10, 11 - by the mode, z. B. with up or down counter-rotating direction and with right or left rotation of both screws, quickly and easily achieved. The material of the screw elements 14 is expediently resistant to abrasion, e.g. B. high-alloy steel, which can still be fitted with hard metal on heavily wearing parts.

Claims (2)

1. Screw press with juxtaposed screws (10, 11), consisting of a housing (1) with a loading opening (7) on the inlet side, and a form or briquetting head (28) on the outlet side, and two screw or worm axles (12, 13) driven by a gear unit (26), which axles consist of assembled worm gear elements (14) provided with a cylindric core, the housing being lengthwise divided into housing elements (3-6), between which a throttle device (19) is placed, that closes the free-space sectional area of the screws by forming a passage slit, characterized in that the throttle is an orifice plate (19), that is placed between the housing elements and narrows the free-space sectional area of the spiral walk of the worms (10,11) down by forming an adjustable throttle slit on the periphery of the cylindric core of the worm gear, that said plate (19) is composed of two parts, by means of one (20) of which a slit on the bottom and by the other one (21) a slit in the apex are adjustable, that the other part (21) has a width corresponding at least to the double core diameter plus one worm pitch.
2. Screw according to claim 1, characterized in that the other part (21) has the form of a displaceable valve plate.
EP83901356A 1982-05-17 1983-05-09 Screw press with juxtaposed screws Expired EP0108763B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83901356T ATE23483T1 (en) 1982-05-17 1983-05-09 AUGER PRESS WITH AUXILIARY AUGERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH306282 1982-05-17
CH3062/82 1982-05-17

Publications (2)

Publication Number Publication Date
EP0108763A1 EP0108763A1 (en) 1984-05-23
EP0108763B1 true EP0108763B1 (en) 1986-11-12

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ID=4247771

Family Applications (1)

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EP83901356A Expired EP0108763B1 (en) 1982-05-17 1983-05-09 Screw press with juxtaposed screws

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US (1) US4599002A (en)
EP (1) EP0108763B1 (en)
JP (1) JPS59500855A (en)
CA (1) CA1227964A (en)
DE (1) DE3367555D1 (en)
DK (1) DK157065C (en)
FI (1) FI81046C (en)
HU (1) HU194088B (en)
IT (1) IT1169522B (en)
NZ (1) NZ204212A (en)
WO (1) WO1983003999A1 (en)

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Also Published As

Publication number Publication date
IT1169522B (en) 1987-06-03
FI81046B (en) 1990-05-31
JPH0318998B2 (en) 1991-03-13
DK18584D0 (en) 1984-01-16
JPS59500855A (en) 1984-05-17
HUT36405A (en) 1985-09-30
CA1227964A (en) 1987-10-13
EP0108763A1 (en) 1984-05-23
NZ204212A (en) 1986-09-10
FI840123A (en) 1984-01-13
DK18584A (en) 1984-01-16
FI840123A0 (en) 1984-01-13
HU194088B (en) 1988-01-28
DK157065C (en) 1990-03-26
DE3367555D1 (en) 1987-01-02
US4599002A (en) 1986-07-08
IT8321127A0 (en) 1983-05-17
FI81046C (en) 1990-09-10
WO1983003999A1 (en) 1983-11-24
DK157065B (en) 1989-11-06

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