EP3094479B1 - Screw press for a screw press separator - Google Patents

Screw press for a screw press separator Download PDF

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Publication number
EP3094479B1
EP3094479B1 EP15700220.5A EP15700220A EP3094479B1 EP 3094479 B1 EP3094479 B1 EP 3094479B1 EP 15700220 A EP15700220 A EP 15700220A EP 3094479 B1 EP3094479 B1 EP 3094479B1
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EP
European Patent Office
Prior art keywords
screw
screw thread
shaft
base shaft
additional
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EP15700220.5A
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German (de)
French (fr)
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EP3094479A1 (en
Inventor
DI Otto Roiss
Dietrich Eichler
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Roehren und Pumpenwerk Bauer GmbH
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Roehren und Pumpenwerk Bauer GmbH
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Priority to SI201531615T priority Critical patent/SI3094479T1/en
Priority to PL15700220T priority patent/PL3094479T3/en
Publication of EP3094479A1 publication Critical patent/EP3094479A1/en
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Publication of EP3094479B1 publication Critical patent/EP3094479B1/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

Definitions

  • the present invention relates to a press screw of a press screw separator, a press screw separator with this press screw, a wear element of the press screw and a method for producing the press screw.
  • Screw press separators are used to squeeze out a pulp.
  • the slurry can in particular be liquid manure or waste water.
  • the wastewater can come from both municipal and industrial plants, whereby these should always be separated into solid and liquid components.
  • a cylindrical screen is usually arranged in the housing of the press screw separators, within which a screw rotates. By means of the screw, the pulp is conveyed through the press screw separator and pressed. The liquid fractions of the pulp pass through the sieve, while a solid plug forms inside the sieve trains. The solid plug is conveyed to one end of the press screw separator by the rotating screw in order to be discharged there. The greatest wear occurs on the screw in the area of the solid plug.
  • DE 10 2008 021 935 A1 shows a screw of a screw press, which is designed in two parts, so that its head part, which is subject to greater wear, can be replaced while retaining the main part.
  • GB 310680 A shows a snail in which the core can be divided to replace a helix.
  • DE 554916 C shows a screw press for moist, for example oily material.
  • the screw body is composed of individual ring sectors that are held together by an appropriate device.
  • DE 22 03 331 A1 shows a press screw for mechanical liquid extraction with screw rings and spacer rings arranged on a shaft.
  • a further object of the present invention is to specify a corresponding press screw separator with the press screw and a wear element for the press screw. Furthermore, a method for the efficient production of the press screw is to be shown.
  • the object is thus achieved by a press screw of a press screw separator.
  • the press screw comprises a base core. At least one helical screw is arranged on this base core.
  • the screw press comprises a wear element.
  • the wear element has an additional core. At least one spiral section is arranged on this additional core.
  • the base core and the additional core can be plugged into one another, so that the screw helix merges into the screw helix section when plugged together.
  • wear elements are also provided in which a plurality of screw spiral sections are arranged on the additional core.
  • the base core and the additional core are preferably tubular elements.
  • the worm helix or the worm helix section are arranged in a spiral shape on the base core or additional core. The wear element can be exchanged when there is corresponding wear on the screw spiral section.
  • the worm helix of the base core and the worm helix section of the wear element overlap and lie flat against one another. Through this two-dimensional contact can the torque can be transmitted from the worm helix to the worm helix section.
  • the screw spiral section preferably protrudes in the axial direction beyond the additional core. In the assembled state, the screw spiral section then extends onto the base core and can thus overlap with the screw spiral of the base core.
  • the base core has a first section with a first outer diameter and a second section with a second outer diameter.
  • the second outside diameter is smaller than the first outside diameter.
  • the additional core is attached to the second section.
  • the base core has a first conical ring surface.
  • the additional core has a second conical ring surface. When plugged together, the two conical ring surfaces lie against one another. This results in a conical fit between the basic core and the additional core. The conical ring surfaces therefore ensure that the two components are centered with respect to one another.
  • the spiral section on the additional core extends preferably over a maximum of 360 °, preferably over a maximum of 180 °, particularly preferably over a maximum of 120 °. It is therefore preferably provided that only a short part, namely the end region of the entire screw spiral, is formed by the screw spiral section of the wear element. With a section of the screw spiral of 120 °, there is no possible narrowing between the two spirals in the case of a screw with two spirals. It is precisely this end area that is particularly exposed to wear and is formed by the worm helix section of the wear element.
  • plug area In the case of press screws, there is usually a so-called "plug area" following the screw helix.
  • This plug area is formed by a section that consists only of the core, without helical screws. In this area forms an annular plug of solid.
  • the additional core of the wear element is relatively long and the spiral section of the wear element extends only over a relatively short area of the additional core. As a result, the plug area is formed by the wear element.
  • the wear element is designed to be relatively short, so that the additional core is essentially only long enough to carry the worm helix section of the wear element.
  • the plug area is formed by a clamping tube without helical screws. The wear element is accordingly clamped between this clamping tube and the worm helixes of the base core.
  • the above-described second section with the smaller outer diameter of the base core is used both for attaching the relatively short wear element and for attaching the clamping tube.
  • the base core in the first section, the additional core and the clamping tube have the same outer diameter. In the assembled state, this results in a uniform outer diameter of the entire core. Alternatively, the outer diameters merge steplessly so that a conical core is created.
  • the wear element has a first length.
  • the clamping tube has a second length. It is advantageously provided that the second length is at least as large as the first length. In particular, it is provided that the second length is at least twice as large as the first length.
  • the clamping tube is therefore made relatively long compared to the additional core of the wear element. This is particularly advantageous if the different manufacturing methods are considered: It is preferred to manufacture the wear element as a cast part. For the clamping tube, however, a tube made of formed metal is used. In this way, the casting is as small as possible.
  • a holding element is preferably provided.
  • This holding element is particularly preferably designed as a pull rod.
  • the tie rod can also be connected to the base core via an internal strut.
  • the base core can be connected to a drive of the press screw separator via the holding element become.
  • the wear element or the clamping tube is securely connected, in particular screwed, to the holding element.
  • the additional tube or the clamping tube is connected to the holding element in such a way that the screw spiral section is pressed against the screw spiral. This ensures a secure connection and good transmission of the torque from the screw spiral to the screw spiral section.
  • the invention further comprises a screw press separator for separating solid components from a slurry containing solid and liquid components.
  • the screw press separator has a housing.
  • a cylindrical sieve is arranged in this housing.
  • One of the screw presses just described is arranged within the sieve. Either the sieve or the press screw can be set in rotation within the housing. This allows the pulp to be squeezed out.
  • the invention further comprises the wear element for the press screw of the press screw separator.
  • This wear element comprises the described additional core, which is designed to be plugged into one another with the base core, and at least one worm helix section arranged on the additional core.
  • the wear element is preferably designed to be relatively short, as described above, and is used together with a clamping tube.
  • the invention comprises a method for producing a press screw of a press screw separator, comprising the following steps: providing the base core with at least one screw helix arranged on the base core, Providing the wear element with the additional core and the screw spiral section arranged on the additional core, and inserting the base core and the additional core into one another, so that the screw spiral merges into the screw spiral section.
  • a clamping tube is also attached to the base core.
  • a conventional press screw is twisted off and the wear element is slipped onto the twisted off portion of the base core.
  • conventional press screws that are already on the market can also be converted so that the wear element can be used here.
  • FIG. 1 described a screw press separator for both embodiments.
  • Figs. 2 to 4 show the first embodiment.
  • Figures 5 to 9 show the second embodiment. Identical or functionally identical components are provided with the same reference symbols.
  • Fig. 1 shows a screw press separator 2 in a partially cut-away representation.
  • the press screw separator 2 comprises a housing 3.
  • a press screw 1 is arranged in the housing 3.
  • the press screw 1 is located inside a cylindrical screen 25.
  • the press screw 1 is connected to a gear 7.
  • the transmission 7 is driven by an electric motor 8.
  • the press screw 1 can be set in rotation by means of the gear 7 and the electric motor 8.
  • Slurry is introduced into the housing 3 via an inlet 4. This pulp is pressed from left to right by rotating the press screw 1. The liquid escapes radially outward through the sieve 35 and leaves the housing 3 via an outlet 5. In the right-hand region of the press screw separator 2, a solid plug forms within the sieve 25. This leaves the housing 3 via an outlet 6.
  • the axis of the press screw 1 and of the cylindrical sieve 25 is identified by reference numeral 9. This axis 9 defines the "axial direction" of the entire arrangement.
  • the solid plug forms in the right-hand area of the press screw 1. In this area, the screw threads are exposed to particularly high levels of wear.
  • Figs. 2 to 4 show in detail the structure of the press screw 1 according to the first embodiment.
  • Fig. 2 shows the fully assembled state of the press screw 1.
  • the press screw 1 is composed of a base core 10 with two screw spirals 11 and an attached wear element 12.
  • Fig. 3 shows the press screw 1 without the wear element 12.
  • Fig. 4 an unfinished state is shown in which the wear element 12 has not yet been fully plugged onto the base core 10.
  • the Figs. 2 to 4 show that the base core 10 is divided into a first section 18 and a second section 19.
  • the two helical screws 11 sit on the first section 18.
  • the second section 19 has a smaller outer diameter than the first section 18.
  • the wear element 12 is pushed onto the second section 19.
  • the wear element 12 is composed of an additional core 13 and at least one spiral section 14 on the additional core 13. Both the base core 10 and the additional core 13 are tubular elements that are concentrically plugged onto one another along the axis 9.
  • the torque from the transmission 7 is transmitted to the base core 10 via a holding element 15, also referred to as a tie rod or internal strut.
  • the holding element 15 extends concentrically to the axis 9 through the base core 10 and the additional core 13.
  • a disk 17 is placed on the additional core 13.
  • a fitting surface 20 is provided on the second section 19. Furthermore, a first conical tube surface 21 on the base core 10 and a second conical tube surface 22 on the additional core 13 ensure an exact fit of the two components.
  • the ends of the screw helix 11 and the screw helix section 14 are provided with a bevel 24.
  • the additional core 13 has a plug portion 26. At this plug section 26 no worm helixes are provided. In this area, the solid plug forms inside the press screw separator 2.
  • the screw spiral section 14 faces the plug area.
  • Such a design of the overlap area 23 ensures that the torque can be reliably transmitted from the worm helix 11 to the worm helix section 14 via the overlap area.
  • Figures 5 to 9 show a second exemplary embodiment of the press screw 1.
  • the wear element 12 is made much shorter than in the first exemplary embodiment.
  • a clamping tube 27 is pushed onto the second section 19 of the base core 10 to form the plug area.
  • FIG. 6 shows the base core 10 with the helical screw 11 without wear element 12 and without clamping tube 27.
  • the wear element 12 is first attached in a shortened form. Thereupon takes place according to Fig. 8 attaching the clamping tube 27.
  • the clamping tube 27 is fastened via the washer 17 and the nut 16.
  • Fig. 9 shows in detail the shortened wear element 12 according to the second embodiment.
  • the design of the conical tube surfaces 21, 22 and the design of the screw spiral sections 14 correspond to the first Embodiment.
  • corresponding conical tube surfaces can advantageously also be provided at the joint between the additional core 13 and the clamping tube 27.
  • the wear element 12 has a first length 28.
  • the clamping tube 27 extends over a second length 29.
  • the second length 29 is advantageously significantly longer than the first length 28, so that the required plug area is available without helical screws. In the event of wear, only the relatively short wear element 12 has to be replaced.
  • the clamping tube 27 can continue to be used.
  • the first length 28 results from two areas: (i) The piece of the additional core 13 on which the two screw spiral sections 14 are arranged. These have opposite to the transport direction, to rest on the screw helix 11 from the Figure 7 protruding ends that serve to prevent rotation. And (ii) the piece of the additional core 13 with the third length 28a, on which there are no screw spiral sections. In practice, it has been shown that in the transport direction immediately behind the two wing ends on the diameter of the additional core 13, a high level of wear can be recorded.
  • the third length 28a is preferably 10% to 50%, particularly preferably 15% to 30% of the outer diameter of the screw helices 11 or screw helix sections 14. In particular, the third length 28a is between 30 mm and 100 mm.
  • press screw 1 To produce the press screw 1, it is also provided in particular that conventional press screws are turned off in the region of the second section 19. This makes it possible to attach the wear element 12 according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Filtration Of Liquid (AREA)
  • Paper (AREA)
  • Treatment Of Sludge (AREA)

Description

Die vorliegende Erfindung betrifft eine Pressschnecke eines Pressschneckenseparators, einen Pressschneckenseparator mit dieser Pressschnecke, ein Verschleißelement der Pressschnecke sowie ein Verfahren zum Herstellen der Pressschnecke.The present invention relates to a press screw of a press screw separator, a press screw separator with this press screw, a wear element of the press screw and a method for producing the press screw.

Pressschneckenseparatoren werden zum Auspressen einer Trübe verwendet. Die Trübe kann insbesondere Gülle oder Abwasser sein. Die Abwässer können sowohl aus kommunalen als auch aus industriellen Anlagen stammen, wobei diese stets in feste und flüssige Bestandteile getrennt werden sollen. In dem Gehäuse der Pressschneckenseparatoren ist üblicherweise ein zylindrisches Sieb angeordnet, innerhalb dessen eine Schnecke rotiert. Mittels der Schnecke wird die Trübe durch den Pressschneckenseparator gefördert und gepresst. Durch das Sieb hindurch treten die flüssigen Anteile der Trübe, während sich innerhalb des Siebes ein Feststoffpfropfen ausbildet. Durch die rotierende Schnecke wird der Feststoffpfropfen an ein Ende des Pressschneckenseparators gefördert, um dort ausgegeben zu werden. Im Bereich des Feststoffpfropfens tritt an der Schnecke der höchste Verschleiß auf.Screw press separators are used to squeeze out a pulp. The slurry can in particular be liquid manure or waste water. The wastewater can come from both municipal and industrial plants, whereby these should always be separated into solid and liquid components. A cylindrical screen is usually arranged in the housing of the press screw separators, within which a screw rotates. By means of the screw, the pulp is conveyed through the press screw separator and pressed. The liquid fractions of the pulp pass through the sieve, while a solid plug forms inside the sieve trains. The solid plug is conveyed to one end of the press screw separator by the rotating screw in order to be discharged there. The greatest wear occurs on the screw in the area of the solid plug.

DE 10 2008 021 935 A1 , gemäß dem Oberbegriff des Anspruchs 1, zeigt eine Schnecke einer Schneckenpresse, die zweiteilig ausgeführt ist, so dass ihr Kopfteil, das einem größeren Verschleiß unterliegt, unter Beibehaltung des Hauptteils ausgetauscht werden kann. DE 10 2008 021 935 A1 , according to the preamble of claim 1, shows a screw of a screw press, which is designed in two parts, so that its head part, which is subject to greater wear, can be replaced while retaining the main part.

GB 310680 A zeigt eine Schnecke, bei der die Seele zur Auswechslung einer Schneckenwendel teilbar ist. GB 310680 A shows a snail in which the core can be divided to replace a helix.

DE 554916 C zeigt eine Schneckenpresse für feuchtes, z.B. ölhaltiges Gut. Der Schneckenkörper ist dabei aus einzelnen Ringsektoren zusammengesetzt, die durch eine entsprechende Vorrichtung zusammengehalten werden. DE 554916 C shows a screw press for moist, for example oily material. The screw body is composed of individual ring sectors that are held together by an appropriate device.

DE 22 03 331 A1 zeigt eine Pressschnecke für die mechanische Flüssigkeitsextraktion mit auf einer Welle angeordneten Schneckenringen und Abstandsringen. DE 22 03 331 A1 shows a press screw for mechanical liquid extraction with screw rings and spacer rings arranged on a shaft.

Es ist Aufgabe der vorliegenden Erfindung, eine Pressschnecke eines Pressschneckenseparators anzugeben, die bei kostengünstiger Herstellung einen verschleißoptimierten Betrieb ermöglicht. Des Weiteren ist es Aufgabe vorliegender Erfindung, einen entsprechenden Pressschneckenseparator mit der Pressschnecke sowie ein Verschleißelement für die Pressschnecke anzugeben. Ferner soll ein Verfahren zum effizienten Herstellen der Pressschnecke gezeigt werden.It is the object of the present invention to specify a press screw of a press screw separator which enables wear-optimized operation while being inexpensive to manufacture. A further object of the present invention is to specify a corresponding press screw separator with the press screw and a wear element for the press screw. Furthermore, a method for the efficient production of the press screw is to be shown.

Die Lösung der Aufgabe erfolgt durch die Merkmale der unabhängigen Ansprüche. Die abhängigen Ansprüche haben vorteilhafte Weitergestaltungen der Erfindung zum Gegenstand.The problem is solved by the features of the independent claims. The dependent claims relate to advantageous developments of the invention.

Somit wird die Aufgabe gelöst durch eine Pressschnecke eines Pressschneckenseparators. Die Pressschnecke umfasst dabei eine Basisseele. Auf dieser Basisseele ist zumindest eine Schneckenwendel angeordnet. Ferner umfasst die Pressschnecke ein Verschleißelement. Das Verschleißelement weist eine Zusatzseele auf. Auf dieser Zusatzseele ist zumindest ein Schneckenwendelabschnitt angeordnet. Die Basisseele und die Zusatzseele sind ineinander steckbar, so dass die Schneckenwendel im zusammengesteckten Zustand in den Schneckenwendelabschnitt übergeht. Es gibt auch Pressschnecken mit mehreren Schneckenwendeln. Dementsprechend sind auch Verschleißelemente vorgesehen, bei denen auf der Zusatzseele mehrere Schneckenwendelabschnitte angeordnet sind. Die Basisseele und die Zusatzseele sind bevorzugt rohrförmige Elemente. Die Schneckenwendel bzw. der Schneckenwendelabschnitt sind spiralförmig auf der Basisseele bzw. Zusatzseele angeordnet. Das Verschleißelement kann bei entsprechendem Verschleiß am Schneckenwendelabschnitt ausgewechselt werden.The object is thus achieved by a press screw of a press screw separator. The press screw comprises a base core. At least one helical screw is arranged on this base core. Furthermore, the screw press comprises a wear element. The wear element has an additional core. At least one spiral section is arranged on this additional core. The base core and the additional core can be plugged into one another, so that the screw helix merges into the screw helix section when plugged together. There are also screw presses with several helixes. Accordingly, wear elements are also provided in which a plurality of screw spiral sections are arranged on the additional core. The base core and the additional core are preferably tubular elements. The worm helix or the worm helix section are arranged in a spiral shape on the base core or additional core. The wear element can be exchanged when there is corresponding wear on the screw spiral section.

Bevorzugt ist vorgesehen, dass im zusammengesteckten Zustand die Schneckenwendel der Basisseele und der Schneckenwendelabschnitt des Verschleißelementes überlappen und flächig aneinander liegen. Durch dieses flächige Aneinanderliegen kann das Drehmoment von der Schneckenwendel auf den Schneckenwendelabschnitt übertragen werden.It is preferably provided that, in the assembled state, the worm helix of the base core and the worm helix section of the wear element overlap and lie flat against one another. Through this two-dimensional contact can the torque can be transmitted from the worm helix to the worm helix section.

Der Schneckenwendelabschnitt steht in axialer Richtung bevorzugt über die Zusatzseele über. Im zusammengesteckten Zustand erstreckt sich dann der Schneckenwendelabschnitt auf die Basisseele und kann somit mit der Schneckenwendel der Basisseele überlappen.The screw spiral section preferably protrudes in the axial direction beyond the additional core. In the assembled state, the screw spiral section then extends onto the base core and can thus overlap with the screw spiral of the base core.

Die Basisseele weist einen ersten Abschnitt mit einem ersten Außendurchmesser und einen zweiten Abschnitt mit einem zweiten Außendurchmesser auf. Der zweite Außendurchmesser ist dabei kleiner als der erste Außendurchmesser. Die Zusatzseele wird auf den zweiten Abschnitt aufgesteckt. Durch diese unterschiedlichen Außendurchmesser an der Basisseele entsteht ein stufenloser Übergang von der Basisseele auf die Zusatzseele.The base core has a first section with a first outer diameter and a second section with a second outer diameter. The second outside diameter is smaller than the first outside diameter. The additional core is attached to the second section. These different outer diameters on the base core create a smooth transition from the base core to the additional core.

Die Basisseele weist eine erste konische Ringfläche auf. Die Zusatzseele weist eine zweite konische Ringfläche auf. Im zusammengesteckten Zustand liegen die beiden konischen Ringflächen aneinander an. Dadurch ist eine konische Passung zwischen Basisseele und Zusatzseele gegeben. Die konischen Ringflächen sorgen daher für eine Zentrierung der beiden Bauteile zueinander.The base core has a first conical ring surface. The additional core has a second conical ring surface. When plugged together, the two conical ring surfaces lie against one another. This results in a conical fit between the basic core and the additional core. The conical ring surfaces therefore ensure that the two components are centered with respect to one another.

Der Schneckenwendelabschnitt auf der Zusatzseele erstreckt sich über bevorzugt maximal 360°, vorzugsweise über maximal 180°, besonders vorzugsweise über maximal 120°. Es ist also bevorzugt vorgesehen, dass lediglich ein kurzer Teil, nämlich der Endbereich der gesamten Schneckenwendel durch den Schneckenwendelabschnitt des Verschleißelementes gebildet wird. Bei einem Abschnitt der Schneckenwendel von 120° kommt es bei einer Schnecke mit zwei Wendeln nicht zu einer möglichen Verengung zwischen den beiden Wendeln. Eben dieser Endbereich ist insbesondere dem Verschleiß ausgesetzt und wird durch den Schneckenwendelabschnitt des Verschleißelementes gebildet.The spiral section on the additional core extends preferably over a maximum of 360 °, preferably over a maximum of 180 °, particularly preferably over a maximum of 120 °. It is therefore preferably provided that only a short part, namely the end region of the entire screw spiral, is formed by the screw spiral section of the wear element. With a section of the screw spiral of 120 °, there is no possible narrowing between the two spirals in the case of a screw with two spirals. It is precisely this end area that is particularly exposed to wear and is formed by the worm helix section of the wear element.

Bei Pressschnecken gibt es üblicherweise im Anschluss an die Schneckenwendel einen sog. "Pfropfenbereich". Dieser Pfropfenbereich ist gebildet durch einen Abschnitt, der lediglich aus der Seele, ohne Schneckenwendeln, besteht. In diesem Bereich bildet sich ein ringförmiger Pfropfen aus Feststoff. In einer ersten Variante ist die Zusatzseele des Verschleißelementes relativ lang und der Schneckenwendelabschnitt des Verschleißelementes erstreckt sich nur über einen relativ kurzen Bereich der Zusatzseele. Dadurch ist der Pfropfenbereich durch das Verschleißelement gebildet.In the case of press screws, there is usually a so-called "plug area" following the screw helix. This plug area is formed by a section that consists only of the core, without helical screws. In this area forms an annular plug of solid. In a first variant, the additional core of the wear element is relatively long and the spiral section of the wear element extends only over a relatively short area of the additional core. As a result, the plug area is formed by the wear element.

In einer bevorzugten zweiten Variante wird jedoch das Verschleißelement relativ kurz ausgebildet, so dass die Zusatzseele im Wesentlichen nur so lang ist, um den Schneckenwendelabschnitt des Verschleißelementes zu tragen. Der Pfopfenbereich wird durch ein Klemmrohr ohne Schneckenwendeln gebildet. Das Verschleißelement ist dementsprechend zwischen diesem Klemmrohr und den Schneckenwendeln der Basisseele eingeklemmt. Der oben beschriebene zweite Abschnitt mit dem kleineren Außendurchmesser der Basisseele wird sowohl zum Aufstecken des relativ kurzen Verschleißelementes als auch zum Aufstecken des Klemmrohrs genutzt.In a preferred second variant, however, the wear element is designed to be relatively short, so that the additional core is essentially only long enough to carry the worm helix section of the wear element. The plug area is formed by a clamping tube without helical screws. The wear element is accordingly clamped between this clamping tube and the worm helixes of the base core. The above-described second section with the smaller outer diameter of the base core is used both for attaching the relatively short wear element and for attaching the clamping tube.

Bevorzugt ist vorgesehen, dass die Basisseele im ersten Abschnitt, die Zusatzseele und das Klemmrohr den gleichen Außendurchmesser aufweisen. Im zusammengebauten Zustand ergibt sich somit ein einheitlicher Außendurchmesser der gesamten Seele. Alternativ gehen die Außendurchmesser stufenlos ineinander über, so dass eine konische Seele entsteht.It is preferably provided that the base core in the first section, the additional core and the clamping tube have the same outer diameter. In the assembled state, this results in a uniform outer diameter of the entire core. Alternatively, the outer diameters merge steplessly so that a conical core is created.

Das Verschleißelement weist eine erste Länge auf. Das Klemmrohr weist eine zweite Länge auf. Vorteilhafterweise ist vorgesehen, dass die zweite Länge zumindest genauso groß ist, wie die erste Länge. Insbesondere ist vorgesehen, dass die zweite Länge zumindest doppelt so groß ist, wie die erste Länge. Das Klemmrohr wird also im Vergleich zur Zusatzseele des Verschleißelementes relativ lang ausgeführt. Dies ist insbesondere von Vorteil, wenn man die unterschiedlichen Herstellungsmethoden betrachtet: Bevorzugt ist vorgesehen, das Verschleißelement als Gussteil zu fertigen. Für das Klemmrohr hingegen wird ein Rohr aus umgeformtem Metall verwendet. So ist das Gussteil möglichst klein.The wear element has a first length. The clamping tube has a second length. It is advantageously provided that the second length is at least as large as the first length. In particular, it is provided that the second length is at least twice as large as the first length. The clamping tube is therefore made relatively long compared to the additional core of the wear element. This is particularly advantageous if the different manufacturing methods are considered: It is preferred to manufacture the wear element as a cast part. For the clamping tube, however, a tube made of formed metal is used. In this way, the casting is as small as possible.

Des Weiteren ist bevorzugt ein Halteelement vorgesehen. Dieses Halteelement ist besonders vorzugsweise als Zugstange ausgebildet. Die Zugstange kann auch über eine Innenverstrebung mit der Basisseele verbunden werden. Über das Halteelement kann die Basisseele mit einem Antrieb des Pressschneckenseparators verbunden werden. Um eine feste Verbindung zwischen der Basisseele und dem Verschleißelement zu gewährleisten, ist bevorzugt vorgesehen, dass das Verschleißelement bzw. das Klemmrohr mit dem Halteelement fest verbunden, insbesondere verschraubt ist.Furthermore, a holding element is preferably provided. This holding element is particularly preferably designed as a pull rod. The tie rod can also be connected to the base core via an internal strut. The base core can be connected to a drive of the press screw separator via the holding element become. In order to ensure a firm connection between the base core and the wear element, it is preferably provided that the wear element or the clamping tube is securely connected, in particular screwed, to the holding element.

Besonders bevorzugt ist vorgesehen, dass die Zusatzseeie bzw. das Klemmrohr derart mit dem Halteelement verbunden wird, so dass der Schneckenwendelabschnitt gegen die Schneckenwendel gepresst wird. Dadurch sind eine sichere Verbindung und eine gute Übertragung des Drehmoments von der Schneckenwendel auf den Schneckenwendelabschnitt sichergestellt.It is particularly preferably provided that the additional tube or the clamping tube is connected to the holding element in such a way that the screw spiral section is pressed against the screw spiral. This ensures a secure connection and good transmission of the torque from the screw spiral to the screw spiral section.

Die Erfindung umfasst des Weiteren einen Pressschneckenseparator zur Abscheidung fester Bestandteile aus einer feste und flüssige Bestandteile enthaltenden Trübe. Der Pressschneckenseparator weist ein Gehäuse auf. In diesem Gehäuse ist ein zylindrisches Sieb angeordnet. Innerhalb des Siebes wird eine der soeben beschriebenen Pressschnecken angeordnet. Entweder das Sieb oder die Pressschnecke können innerhalb des Gehäuses in Rotation versetzt werden. Dadurch kann die Trübe ausgepresst werden.The invention further comprises a screw press separator for separating solid components from a slurry containing solid and liquid components. The screw press separator has a housing. A cylindrical sieve is arranged in this housing. One of the screw presses just described is arranged within the sieve. Either the sieve or the press screw can be set in rotation within the housing. This allows the pulp to be squeezed out.

Des Weiteren umfasst die Erfindung das Verschleißelement für die Pressschnecke des Pressschneckenseparators. Dieses Verschleißelement umfasst die beschriebene Zusatzseele, die zum Ineinanderstecken mit der Basisseele ausgebildet ist, und zumindest einen auf der Zusatzseele angeordneten Schneckenwendelabschnitt. Bevorzugt ist das Verschleißelement wie oben beschrieben relativ kurz ausgebildet und wird zusammen mit einem Klemmrohr eingesetzt.The invention further comprises the wear element for the press screw of the press screw separator. This wear element comprises the described additional core, which is designed to be plugged into one another with the base core, and at least one worm helix section arranged on the additional core. The wear element is preferably designed to be relatively short, as described above, and is used together with a clamping tube.

Die im Rahmen der erfindungsgemäßen Pressschnecke beschriebenen vorteilhaften Ausgestaltungen und die Unteransprüche finden entsprechend vorteilhafte Anwendung für den erfindungsgemäßen Pressschneckenseparator und für das erfindungsgemäße Verschleißelement.The advantageous refinements described in the context of the press screw according to the invention and the subclaims find corresponding advantageous application for the press screw separator according to the invention and for the wear element according to the invention.

Des Weiteren umfasst die Erfindung ein Verfahren zum Herstellen einer Pressschnecke eines Pressschneckenseparators, umfassend die folgenden Schritte: Bereitstellen der Basisseele mit zumindest einer auf der Basisseele angeordneten Schneckenwendel, Bereitstellen des Verschleißelementes mit der Zusatzseele und dem auf der Zusatzseele angeordneten Schneckenwendelabschnitt, und Ineinanderstecken der Basisseele und der Zusatzseele, so dass die Schneckenwendel in den Schneckenwendelabschnitt übergeht. Bei Verwendung des kurzen Verschleißelementes wird zusätzlich ein Klemmrohr auf die Basisseele aufgesteckt.Furthermore, the invention comprises a method for producing a press screw of a press screw separator, comprising the following steps: providing the base core with at least one screw helix arranged on the base core, Providing the wear element with the additional core and the screw spiral section arranged on the additional core, and inserting the base core and the additional core into one another, so that the screw spiral merges into the screw spiral section. When using the short wear element, a clamping tube is also attached to the base core.

Die im Rahmen der Pressschnecke beschriebenen vorteilhaften Ausgestaltungen und die Unteransprüche finden entsprechend vorteilhafte Anwendung für das erfindungsgemäße Verfahren.The advantageous refinements described in the context of the screw press and the subclaims find corresponding advantageous application for the method according to the invention.

Insbesondere ist vorgesehen, dass zum Bereitstellen der Basisseele eine herkömmliche Pressschnecke abgedreht wird, und das Verschleißelement auf den abgedrehten Anteil der Basisseele aufgesteckt wird. Dadurch können auch herkömmliche, bereits auf dem Markt befindliche Pressschnecken umgebaut werden, sodass das Verschleißelement hier Anwendung findet.In particular, it is provided that, in order to provide the base core, a conventional press screw is twisted off and the wear element is slipped onto the twisted off portion of the base core. As a result, conventional press screws that are already on the market can also be converted so that the wear element can be used here.

Im Folgenden werden anhand der Figuren zwei Ausführungsbeispiele der erfindungsgemäßen Pressschnecke gezeigt. Dabei zeigen:

Fig. 1
einen erfindungsgemäßen Pressschneckenseparator mit einer erfindungsgemäßen Pressschnecke gemäß beiden Ausführungsbeispielen,
Fig. 2
die erfindungsgemäße Pressschnecke gemäß dem ersten Ausführungsbeispiel,
Fig. 3
einen Bestandteil der erfindungsgemäßen Pressschnecke gemäß dem ersten Ausführungsbeispiel,
Fig. 4
die erfindungsgemäße Pressschnecke gemäß dem ersten Ausführungsbeispiel im noch unvollständig montierten Zustand,
Fig. 5
die erfindungsgemäße Pressschnecke gemäß dem zweiten Ausführungsbeispiel,
Fig. 6-8
die erfindungsgemäße Pressschnecke gemäß dem zweiten Ausführungsbeispiel in unterschiedlichen Montagezuständen, und
Fig. 9
das Verschleißelement der Pressschnecke gemäß dem zweiten Ausführungsbeispiel.
In the following, two exemplary embodiments of the press screw according to the invention are shown on the basis of the figures. Show:
Fig. 1
a press screw separator according to the invention with a press screw according to the invention according to both embodiments,
Fig. 2
the press screw according to the invention according to the first embodiment,
Fig. 3
a component of the press screw according to the invention according to the first embodiment,
Fig. 4
the press screw according to the invention according to the first embodiment in the still incompletely assembled state,
Fig. 5
the press screw according to the invention according to the second embodiment,
Fig. 6-8
the press screw according to the invention according to the second embodiment in different assembly states, and
Fig. 9
the wear element of the press screw according to the second embodiment.

Im Folgenden wird anhand von Fig. 1 ein Pressschneckenseparator für beide Ausführungsbeispiele beschrieben. Fig. 2 bis 4 zeigen das erste Ausführungsbeispiel. Fig. 5 bis 9 zeigen das zweite Ausführungsbeispiel. Gleiche bzw. funktional gleiche Bauteile sind mit denselben Bezugszeichen versehen.In the following, using Fig. 1 described a screw press separator for both embodiments. Figs. 2 to 4 show the first embodiment. Figures 5 to 9 show the second embodiment. Identical or functionally identical components are provided with the same reference symbols.

Fig. 1 zeigt einen Pressschneckenseparator 2 in teilweiser aufgeschnittener Darstellung. Der Pressschneckenseparator 2 umfasst ein Gehäuse 3. In dem Gehäuse 3 ist eine Pressschnecke 1 angeordnet. Die Pressschnecke 1 befindet sich innerhalb eines zylindrischen Siebes 25. Fig. 1 shows a screw press separator 2 in a partially cut-away representation. The press screw separator 2 comprises a housing 3. A press screw 1 is arranged in the housing 3. The press screw 1 is located inside a cylindrical screen 25.

Die Pressschnecke 1 ist mit einem Getriebe 7 verbunden. Das Getriebe 7 wird über einen Elektromotor 8 angetrieben. Mittels des Getriebes 7 und des Elektromotors 8 kann die Pressschnecke 1 in Rotation versetzt werden.The press screw 1 is connected to a gear 7. The transmission 7 is driven by an electric motor 8. The press screw 1 can be set in rotation by means of the gear 7 and the electric motor 8.

Über einen Einlass 4 wird Trübe in das Gehäuse 3 eingeleitet. Von links nach rechts wird durch Rotation der Pressschnecke 1 diese Trübe ausgepresst. Die Flüssigkeit entweicht radial nach außen durch das Sieb 35 und verlässt über einen Ablauf 5 das Gehäuse 3. Im rechten Bereich des Pressschneckenseparators 2 bildet sich innerhalb des Siebes 25 ein Feststoffpfropfen. Dieser verlässt das Gehäuse 3 über einen Auslass 6.Slurry is introduced into the housing 3 via an inlet 4. This pulp is pressed from left to right by rotating the press screw 1. The liquid escapes radially outward through the sieve 35 and leaves the housing 3 via an outlet 5. In the right-hand region of the press screw separator 2, a solid plug forms within the sieve 25. This leaves the housing 3 via an outlet 6.

Mit Bezugszeichen 9 ist die Achse der Pressschnecke 1 und des zylindrischen Siebes 25 gekennzeichnet. Diese Achse 9 definiert die "axiale Richtung" der gesamten Anordnung.The axis of the press screw 1 and of the cylindrical sieve 25 is identified by reference numeral 9. This axis 9 defines the "axial direction" of the entire arrangement.

Im rechten Bereich der Pressschnecke 1 bildet sich der Feststoffpfropfen. In diesem Bereich sind die Schneckenwendeln einem besonders hohen Verschleiß ausgesetzt.The solid plug forms in the right-hand area of the press screw 1. In this area, the screw threads are exposed to particularly high levels of wear.

Fig. 2 bis 4 zeigen im Detail den Aufbau der Pressschnecke 1 nach dem ersten Ausführungsbeispiel. Fig. 2 zeigt hierzu den fertig zusammengebauten Zustand der Pressschnecke 1. Die Pressschnecke 1 setzt sich zusammen aus einer Basisseele 10 mit zwei Schneckenwendeln 11 und einem aufgesetzten Verschleißelement 12. Figs. 2 to 4 show in detail the structure of the press screw 1 according to the first embodiment. Fig. 2 shows the fully assembled state of the press screw 1. The press screw 1 is composed of a base core 10 with two screw spirals 11 and an attached wear element 12.

Fig. 3 zeigt die Pressschnecke 1 ohne das Verschleißelement 12. In Fig. 4 ist ein unfertiger Zustand gezeigt, bei dem das Verschleißelement 12 noch nicht vollständig auf die Basisseele 10 aufgesteckt ist. Fig. 3 shows the press screw 1 without the wear element 12. In Fig. 4 an unfinished state is shown in which the wear element 12 has not yet been fully plugged onto the base core 10.

Die Fig. 2 bis 4 zeigen, dass sich die Basisseele 10 in einen ersten Abschnitt 18 und einen zweiten Abschnitt 19 unterteilt. Auf dem ersten Abschnitt 18 sitzen die beiden Schneckenwendeln 11. Der zweite Abschnitt 19 weist einen kleineren Außendurchmesser als der erste Abschnitt 18 auf. Auf den zweiten Abschnitt 19 wird das Verschleißelement 12 aufgesteckt.The Figs. 2 to 4 show that the base core 10 is divided into a first section 18 and a second section 19. The two helical screws 11 sit on the first section 18. The second section 19 has a smaller outer diameter than the first section 18. The wear element 12 is pushed onto the second section 19.

Das Verschleißelement 12 setzt sich zusammen aus einer Zusatzseele 13 und zumindest einem Schneckenwendelabschnitt 14 auf der Zusatzseele 13. Sowohl die Basisseele 10 als auch die Zusatzseele 13 sind rohrförmige Elemente, die entlang der Achse 9 konzentrisch aufeinandergesteckt werden.The wear element 12 is composed of an additional core 13 and at least one spiral section 14 on the additional core 13. Both the base core 10 and the additional core 13 are tubular elements that are concentrically plugged onto one another along the axis 9.

Dieses Aufeinanderstecken erfolgt derart, dass der Schneckenwendelabschnitt 14 an der entsprechenden Schneckenwendel 11 flächig anliegt, so dass sich wie in Fig. 2 gezeigt, ein Überlappungsbereich 23 ergibt.This one on top of the other takes place in such a way that the screw spiral section 14 rests flat against the corresponding screw spiral 11, so that, as in FIG Fig. 2 shown, an overlap area 23 results.

Das Drehmoment vom Getriebe 7 wird über ein Halteelement 15, auch bezeichnet als Zugstange oder Innenverstrebung, auf die Basisseele 10 übertragen. Hierzu erstreckt sich das Halteelement 15 konzentrisch zur Achse 9 durch die Basisseele 10 und die Zusatzseele 13. Am pfropfenseitigen Ende der Pressschnecke 1 ist eine Scheibe 17 auf die Zusatzseele 13 aufgesetzt. Des Weiteren befindet sich hier eine Mutter 16 zum Verschrauben der Zusatzseele 13 über die Scheibe 17 mit dem Halteelement 15.
Das Verschrauben des Verschleißelementes 12 mit dem Halteelement 15 erlaubt ein Aufpressen des Schneckenwendelabschnittes 14 auf die Schneckenwendel 11.The torque from the transmission 7 is transmitted to the base core 10 via a holding element 15, also referred to as a tie rod or internal strut. For this purpose, the holding element 15 extends concentrically to the axis 9 through the base core 10 and the additional core 13. At the plug-side end of the press screw 1, a disk 17 is placed on the additional core 13. Furthermore, there is a nut 16 for screwing the additional core 13 to the holding element 15 via the washer 17.
The screwing of the wear element 12 to the holding element 15 allows the screw spiral section 14 to be pressed onto the screw spiral 11.

Für eine gute Zentrierung des Verschleißelementes 12 auf dem zweiten Abschnitt 19 ist eine Passfläche 20 auf dem zweiten Abschnitt 19 vorgesehen. Des Weiteren sorgen eine erste konische Rohrfläche 21 an der Basisseele 10 und eine zweite konische Rohrfläche 22 an der Zusatzseele 13 für eine exakte Passung der beiden Bauteile.For good centering of the wear element 12 on the second section 19, a fitting surface 20 is provided on the second section 19. Furthermore, a first conical tube surface 21 on the base core 10 and a second conical tube surface 22 on the additional core 13 ensure an exact fit of the two components.

Um Ansammlungen von Feststoff zu vermeiden sind die Enden der Schneckenwendel 11 und des Schneckenwendelabschnitts 14 mit einer Abschrägung 24 versehen.In order to avoid the accumulation of solids, the ends of the screw helix 11 and the screw helix section 14 are provided with a bevel 24.

Wie insbesondere Fig. 4 zeigt, weist die Zusatzseele 13 einen Pfropfenabschnitt 26 auf. An diesem Pfropfenabschnitt 26 sind keinerlei Schneckenwendeln vorgesehen. In diesem Bereich bildet sich der Feststoffpfropfen innerhalb des Pressschneckenseparators 2.How in particular Fig. 4 shows, the additional core 13 has a plug portion 26. At this plug section 26 no worm helixes are provided. In this area, the solid plug forms inside the press screw separator 2.

Wie insbesondere Fig. 2 zeigt, ist im Überlappungsbereich 23 der Schneckenwendelabschnitt 14 dem Pfropfenbereich zugewandt. Durch die derartige Ausbildung des Überlappungsbereichs 23 wird sichergestellt, dass über den Überlappungsbereich das Drehmoment sicher von der Schneckenwendel 11 auf den Schneckenwendelabschnitt 14 übertragbar ist.How in particular Fig. 2 shows, in the overlap area 23, the screw spiral section 14 faces the plug area. Such a design of the overlap area 23 ensures that the torque can be reliably transmitted from the worm helix 11 to the worm helix section 14 via the overlap area.

Fig. 5 bis 9 zeigen ein zweites Ausführungsbeispiel der Pressschnecke 1. Im zweiten Ausführungsbeispiel ist das Verschleißelement 12 wesentlich kürzer ausgeführt als im ersten Ausführungsbeispiel. Zur Ausbildung des Pfropfenbereichs ist im zweiten Ausführungsbeispiel ein Klemmrohr 27 auf den zweiten Abschnitt 19 der Basisseele 10 aufgesteckt. Figures 5 to 9 show a second exemplary embodiment of the press screw 1. In the second exemplary embodiment, the wear element 12 is made much shorter than in the first exemplary embodiment. In the second exemplary embodiment, a clamping tube 27 is pushed onto the second section 19 of the base core 10 to form the plug area.

Fig. 6 zeigt die Basisseele 10 mit der Schneckenwendel 11 ohne Verschleißelement 12 und ohne Klemmrohr 27. Gemäß Fig. 7 wird zunächst das Verschleißelement 12 in verkürzter Form aufgesteckt. Daraufhin erfolgt gemäß Fig. 8 ein Aufstecken des Klemmrohrs 27. Das Klemmrohr 27 wird über die Scheibe 17 und die Mutter 16 befestigt. Fig. 6 shows the base core 10 with the helical screw 11 without wear element 12 and without clamping tube 27. According to FIG Fig. 7 the wear element 12 is first attached in a shortened form. Thereupon takes place according to Fig. 8 attaching the clamping tube 27. The clamping tube 27 is fastened via the washer 17 and the nut 16.

Fig. 9 zeigt im Detail das verkürzte Verschleißelement 12 gemäß dem zweiten Ausführungsbeispiel. Die Ausbildung der konischen Rohrflächen 21, 22 sowie die Ausbildung der Schneckenwendelabschnitte 14 entsprechen dem ersten Ausführungsbeispiel. Vorteilhafterweise können im zweiten Ausführungsbeispiel auch am Stoß zwischen Zusatzseele 13 und Klemmrohr 27 entsprechende konische Rohrflächen vorgesehen werden. Fig. 9 shows in detail the shortened wear element 12 according to the second embodiment. The design of the conical tube surfaces 21, 22 and the design of the screw spiral sections 14 correspond to the first Embodiment. In the second exemplary embodiment, corresponding conical tube surfaces can advantageously also be provided at the joint between the additional core 13 and the clamping tube 27.

Wie Fig. 8 und 9 zeigen, weist das Verschleißelement 12 eine erste Länge 28 auf. Das Klemmrohr 27 erstreckt sich über eine zweite Länge 29. Die zweite Länge 29 ist vorteilhafterweise wesentlich länger als die erste Länge 28, so dass der benötigte Pfropfenbereich ohne Schneckenwendeln zur Verfügung steht. Bei einem Verschleiß muss lediglich das relativ kurze Verschleißelement 12 ausgewechselt werden. Das Klemmrohr 27 kann weiter verwendet werden.How Fig. 8 and 9 show, the wear element 12 has a first length 28. The clamping tube 27 extends over a second length 29. The second length 29 is advantageously significantly longer than the first length 28, so that the required plug area is available without helical screws. In the event of wear, only the relatively short wear element 12 has to be replaced. The clamping tube 27 can continue to be used.

Die erste Länge 28 ergibt sich aus zwei Bereichen: (i) Das Stück der Zusatzseele 13, auf dem die zwei Schneckenwendelabschnitte 14 angeordnet sind. Diese besitzen entgegen der Transportrichtung, zur Anlage an die Schneckenwendel 11 aus der Figur 7 herausstehende Enden, die der Verdrehsicherung dienen. Und (ii) das Stück der Zusatzseele 13 mit der dritten Länge 28a, auf dem sich keine Schneckenwendelabschnitte befinden. In der Praxis hat sich gezeigt, dass in Transportrichtung unmittelbar hinter den beiden Flügelenden auf dem Durchmesser der Zusatzseele 13 ein hoher Verschleiß zu verzeichnen ist.The first length 28 results from two areas: (i) The piece of the additional core 13 on which the two screw spiral sections 14 are arranged. These have opposite to the transport direction, to rest on the screw helix 11 from the Figure 7 protruding ends that serve to prevent rotation. And (ii) the piece of the additional core 13 with the third length 28a, on which there are no screw spiral sections. In practice, it has been shown that in the transport direction immediately behind the two wing ends on the diameter of the additional core 13, a high level of wear can be recorded.

Bevorzugt beträgt die dritte Länge 28a 10% bis 50%, besonders bevorzugt 15% bis 30% des Außendurchmessers der Schneckenwendeln 11 bzw. Schneckenwendelabschnitte 14. Insbesondere liegt die dritte Länge 28a zwischen 30mm und 100mm.The third length 28a is preferably 10% to 50%, particularly preferably 15% to 30% of the outer diameter of the screw helices 11 or screw helix sections 14. In particular, the third length 28a is between 30 mm and 100 mm.

Zum Herstellen der Pressschnecke 1 ist insbesondere auch vorgesehen, dass herkömmliche Pressschnecken im Bereich des zweiten Abschnitts 19 abgedreht werden. Dadurch ist es möglich, das erfindungsgemäße Verschleißelement 12 aufzustecken.To produce the press screw 1, it is also provided in particular that conventional press screws are turned off in the region of the second section 19. This makes it possible to attach the wear element 12 according to the invention.

BezugszeichenlisteList of reference symbols

11
PressschneckePress screw
22
PressschneckenseparatorPress screw separator
33
Gehäusecasing
44th
Einlassinlet
55
Ablaufprocedure
66th
AuslassOutlet
77th
Getriebetransmission
88th
ElektromotorElectric motor
99
Achseaxis
1010
BasisseeleBase soul
1111
SchneckenwendelHelix
1212th
VerschleißelementWear element
1313th
ZusatzseeleAdditional soul
1414th
SchneckenwendelabschnittSpiral section
1515th
HalteelementRetaining element
1616
Muttermother
1717th
Scheibedisc
1818th
erster Abschnittfirst section
1919th
zweiter Abschnittsecond part
2020th
PassflächeMating surface
2121
erste konische Rohrflächefirst conical tube surface
2222nd
zweite konische Rohrflächesecond conical tube surface
2323
ÜberlappungsbereichOverlap area
2424
Abschrägungbevel
2525th
SiebSieve
2626th
PfropfenbereichPlug area
2727
KlemmrohrClamp pipe
2828
erste Längefirst length
2929
zweite Längesecond length
28a28a
dritte Längethird length

Claims (12)

  1. A pressing screw (1) of a pressing screw separator (2), comprising
    a base shaft (10),
    at least one screw thread (11) arranged on the base shaft (10), and
    a wear element (12) with
    - an additional shaft (13), and
    - at least one screw thread section (14) arranged on the additional shaft (13),
    wherein the base shaft (10) and the additional shaft (13) can be plugged into each other so that the screw thread (11) merges into the screw thread section (14),
    characterized by a first conical annular surface (21) on the base shaft (10) and a second conical annular surface (22) on the additional shaft (13), wherein the two conical annular surfaces (21, 22) lie on each other in the plugged-together state,
    wherein the base shaft (10) comprises a first portion (18) with a first outer diameter and a second portion (19) with a second outer diameter, wherein the second outer diameter is smaller than the first outer diameter, and wherein the additional shaft (13) is plugged onto the second portion (19).
  2. The pressing screw according to claim 1, characterized in that in the plugged-together state the screw thread (11) of the base shaft (10) and the screw thread section (14) of the wear element (12) overlap and lie flatly with each other.
  3. The pressing screw according to any one of the preceding claims, characterized in that the screw thread section (14) protrudes in the axial direction above the additional shaft (13).
  4. The pressing screw according to any one of the preceding claims, characterized in that the screw thread section (14) extends over a maximum of 360°, preferably over a maximum of 180°, particularly preferably over a maximum of 120°, around the axis (9) of the additional shaft (13).
  5. The pressing screw according to any one of the preceding claims, characterized by a holding element (15) extending in the axial direction through the base shaft (10) and the additional shaft (13), preferably formed as a pulling rod, wherein a torque can be transmitted from a drive to the base shaft via the holding element, and wherein the additional shaft (13) is firmly connected, preferably screwed, to the holding element (15).
  6. The pressing screw according to claim 5, characterized in that the screw thread section (14) can be pressed against the screw thread (11) by the connection between additional shaft (13) and holding element (15).
  7. The pressing screw according to any one of the preceding claims, characterized by a clamping tube (27) plugged onto the base shaft (10), wherein the wear element (12) is arranged between the clamping tube (27) and the screw thread (11).
  8. The pressing screw according to claim 7, characterized in that the base shaft (10) in the region of the screw thread (11), the additional shaft (13), and the clamping tube (27) comprise the same outer diameter.
  9. The pressing screw according to claim 7 or 8, characterized in that the wear element (12) comprises a first length (28) and the clamping tube (27) comprises a second length (29), wherein the second length (29) is at least 100%, preferably at least 200%, of the first length (28).
  10. The pressing screw according to any one of claims 7 to 9, characterized in that the wear element (11) is a casting and the clamping tube is a formed metal part.
  11. A pressing screw separator (2) for separating solid components from a slurry containing solid and liquid components, comprising
    - a housing (3)
    - a cylindrical screen (25) arranged in the housing (3), and
    - a pressing screw (1) arranged within the screen (25) according to any of the preceding claims for pressing out the slurry.
  12. A method of manufacturing a pressing screw according to any one of claims 1 to 10 of a pressing screw separator (2), comprising the following steps:
    providing a base shaft (10) with at least one screw thread (11) arranged on the base shaft (10),
    providing a wear element (12) with an additional shaft (13) and at least one screw thread section (14) arranged on the additional shaft (13), and
    inserting the base shaft (10) and the additional shaft (13) with each other so that the screw thread (11) merges into the screw thread section (14),
    characterized in that a conventional pressing screw is turned down to provide the base shaft (10), and the wear element (12) is plugged onto the turned down portion of the base shaft (10).
EP15700220.5A 2014-01-15 2015-01-12 Screw press for a screw press separator Active EP3094479B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201531615T SI3094479T1 (en) 2014-01-15 2015-01-12 Screw press for a screw press separator
PL15700220T PL3094479T3 (en) 2014-01-15 2015-01-12 Screw press for a screw press separator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014200577.9A DE102014200577B3 (en) 2014-01-15 2014-01-15 Pressing screw, press screw separator, wear element and method for producing a press screw
PCT/EP2015/050395 WO2015107018A1 (en) 2014-01-15 2015-01-12 Screw press for a screw press separator

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Publication Number Publication Date
EP3094479A1 EP3094479A1 (en) 2016-11-23
EP3094479B1 true EP3094479B1 (en) 2021-04-14

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EP15700220.5A Active EP3094479B1 (en) 2014-01-15 2015-01-12 Screw press for a screw press separator

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EP (1) EP3094479B1 (en)
DE (1) DE102014200577B3 (en)
ES (1) ES2880285T3 (en)
HU (1) HUE054807T2 (en)
PL (1) PL3094479T3 (en)
SI (1) SI3094479T1 (en)
WO (1) WO2015107018A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102021128199A1 (en) * 2021-10-28 2023-05-04 Vogelsang Gmbh & Co. Kg Separator device for dewatering moist masses

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB310680A (en) * 1928-05-23 1929-05-02 Percy Vavasseur Appleby Improvements in or relating to feed or pressure worms, applicable for use in oil-pressing apparatus or the like
DE554916C (en) * 1930-09-25 1932-07-13 Fried Krupp Grusonwerk Akt Ges Screw press for moist material with a hollow screw shaft and discharge of the oil through the sieve wall and the hollow shaft
DE2203331A1 (en) * 1972-01-25 1973-08-02 Miag Muehlenbau & Ind Gmbh PRESS SCREW FOR MECHANICAL LIQUID EXTRACTION

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
GB966647A (en) * 1961-07-05 1964-08-12 Telegrafie & Telefonie Device for changing the orientation or direction of movement of post cards, letters,forms and like flat articles
DE4444370A1 (en) * 1994-12-14 1996-06-20 Max Gutknecht Device for the thermal, mechanical, chemical and / or physical treatment of a product
DE29706744U1 (en) * 1997-04-15 1998-05-20 Hasenbein, Günter, Dipl.-Ing., 22946 Großensee Screw element for screw press
DE102008021935A1 (en) * 2008-05-02 2009-11-05 Olaf Grimmel Screw press useful in wastewater treatment plants, comprises a screw, and a tube, which is concentrically arranged to the screw and has an opening in its lateral surface, through which a material reaches into a tube interior
DE202011004414U1 (en) * 2011-03-22 2011-06-01 Kun Sheng Machine Co., Ltd. Dewatering and processing machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB310680A (en) * 1928-05-23 1929-05-02 Percy Vavasseur Appleby Improvements in or relating to feed or pressure worms, applicable for use in oil-pressing apparatus or the like
DE554916C (en) * 1930-09-25 1932-07-13 Fried Krupp Grusonwerk Akt Ges Screw press for moist material with a hollow screw shaft and discharge of the oil through the sieve wall and the hollow shaft
DE2203331A1 (en) * 1972-01-25 1973-08-02 Miag Muehlenbau & Ind Gmbh PRESS SCREW FOR MECHANICAL LIQUID EXTRACTION

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HUE054807T2 (en) 2021-09-28
EP3094479A1 (en) 2016-11-23
ES2880285T3 (en) 2021-11-24
WO2015107018A1 (en) 2015-07-23
DE102014200577B3 (en) 2015-05-28
PL3094479T3 (en) 2021-10-11
SI3094479T1 (en) 2021-08-31

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