EP3427937A1 - Vis d'un séparateur à vis de pression - Google Patents

Vis d'un séparateur à vis de pression Download PDF

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Publication number
EP3427937A1
EP3427937A1 EP18181313.0A EP18181313A EP3427937A1 EP 3427937 A1 EP3427937 A1 EP 3427937A1 EP 18181313 A EP18181313 A EP 18181313A EP 3427937 A1 EP3427937 A1 EP 3427937A1
Authority
EP
European Patent Office
Prior art keywords
screw
reinforcing element
worm
longitudinal axis
wing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18181313.0A
Other languages
German (de)
English (en)
Other versions
EP3427937B1 (fr
Inventor
Dietrich Eichler
Otto Roiss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roehren und Pumpenwerk Bauer GmbH
Original Assignee
Roehren und Pumpenwerk Bauer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roehren und Pumpenwerk Bauer GmbH filed Critical Roehren und Pumpenwerk Bauer GmbH
Priority to HRP20220394TT priority Critical patent/HRP20220394T1/hr
Priority to SI201830598T priority patent/SI3427937T1/sl
Priority to PL18181313T priority patent/PL3427937T3/pl
Publication of EP3427937A1 publication Critical patent/EP3427937A1/fr
Application granted granted Critical
Publication of EP3427937B1 publication Critical patent/EP3427937B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B30B9/121—Screw constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
    • B01F27/052—Stirrers with replaceable wearing elements; Wearing elements therefor

Definitions

  • the invention relates to a screw, which is used in particular in press screw separators.
  • the worm has reinforcing elements on the worm wings. Furthermore, the invention relates to a method for producing the screw.
  • Press screw separators are for example in DE 20 2012 011 864 U1 and DE 20 2012 008 077 U1 described.
  • DE 42 14 217 A1 shows angular reinforcing elements, here referred to as wear elements, on the wings of the screw of a press screw separator.
  • the invention is achieved by a screw.
  • This screw is used in particular in a press screw separator.
  • a press screw separator is for example in DE 20 2012 011 864 U1 and DE 20 2012 008 077 U1 described.
  • the screw extruder comprises a sieve.
  • the screw In the sieve, the screw is arranged and is rotated by means of a drive in rotation. Alternatively, the screw can be fixed and the screen set in rotation.
  • the press screw separator is a slurry, such as manure, municipal wastewater or industrial wastewater fed. Along the snail, the turbid is squeezed out. Liquid components of the pulp pass through the sieve radially outwards and flow off.
  • a plug of solid forms. This plug is usually held with a discharge regulator.
  • the area facing the plug and the radial side of the at least one worm wing are subject to a relatively high mechanical stress and corresponding wear.
  • the screw according to the invention comprises a soul.
  • the soul extends along a longitudinal axis. Perpendicular to the longitudinal axis, a radial direction is defined. Around the longitudinal axis, a circumferential direction is defined.
  • the worm comprises at least one worm wing.
  • two or three worm wings can be arranged on the soul.
  • the at least one worm wing is wound in the circumferential direction and along the longitudinal axis around the soul.
  • the worm wing can also be called a worm spiral.
  • a front axial side points forward with respect to the conveying direction of the worm.
  • the front axial side is a rear axial side.
  • the two axial sides are connected to each other via a relatively narrow radial side.
  • the radial side is substantially perpendicular to the radial direction.
  • the front axial side and the radial side are subject to the relatively high mechanical stress and wear. Therefore, the document shows DE 42 14 217 A1 angular wear elements that cover the front axial side and the radial side.
  • At least one reinforcing element preferably on each screw wing, several of the reinforcing elements are used.
  • the configuration of a single reinforcing element will be described in each case.
  • several of the reinforcing elements can be used in succession on a worm wing without any problem.
  • the single reinforcing element has a U-shaped cross-section.
  • the reinforcing member is applied to the radial side of the worm wing, so that a front leg of the U-shape on the front axial side and a rear leg of the U-shape abut the rear axial side of the worm wing; the two legs of the U-shape connecting portion of the reinforcing element covers the radial side of the screw flight.
  • the reinforcing element is positively secured in both directions perpendicular to the axial sides of the worm wing.
  • the U-shape basically includes all cross-sectional shapes with two opposing, connected legs, such as a C-shape or V-shape. However, it is particularly preferred that the two legs are parallel to each other.
  • the reinforcing element and the worm wing are formed so that the reinforcing element on the worm wing only alswindbar and not in the radial direction can be plugged.
  • the unwinding of the reinforcing element takes place from the end of the auger blade along the turn of the auger wing.
  • the reinforcing element is arranged with respect to the radial direction form-fitting manner on the worm wing.
  • the geometric configuration of the worm wing and / or the pitch of the worm wing and / or the geometric configuration of the reinforcing element cause the reinforcing element auffanbar only on the worm wing and not plugged in the radial direction.
  • the positive connection between the reinforcing element and screw flights with respect to the radial direction is achieved in that the reinforcing element extends over a relatively large angle ⁇ .
  • This angle ⁇ is measured about the longitudinal axis and in a plane perpendicular to the longitudinal axis. If the reinforcing element extends, for example, by half a turn of the worm wing, the angle ⁇ is 180 °.
  • the angle ⁇ over which the individual reinforcing element extends is at least 30 °, preferably at least 45 °, more preferably at least 60 °, particularly preferably at least 90 °. Furthermore, embodiments are also possible in which the angle ⁇ is at least 120 °, preferably at least 150 °.
  • the two legs of the reinforcing element are formed so that they do not undercut the worm wing.
  • This is achieved for example by a cross section in which the two legs are parallel to each other or by a V-shape.
  • the positive connection is achieved in the radial direction only by the described, relatively large angle ⁇ and not by an undercut between the reinforcing element and the worm wing.
  • the receiving area for the reinforcing element on the screw wing may have a simple geometry with flat surfaces.
  • the single reinforcing element is made in one piece.
  • one-piece manufacturing is meant that the reinforcing element is not composed of several components.
  • the reinforcing element is preferably made by machining from the solid or by primary molding. The original forming production preferably takes place by casting, 3D printing or sintering.
  • the "3D printing” includes all additive manufacturing processes, such as powder bed processes, free space processes, liquid metal processes or other layer construction processes.
  • additive manufacturing processes such as powder bed processes, free space processes, liquid metal processes or other layer construction processes.
  • the green compact of the reinforcing element can be produced in a conventional manner or also with 3D printing.
  • a reinforcing element is preferably formed as a transition element. This transition element is first turned on the screw wing.
  • the transition member has a tapered portion such that the portion of the flight wing formed by the reinforcing members passes into the unreinforced portion of the flight wing without any appreciable edge.
  • a reinforcing element is preferably designed as a closing element. This final element is last turned on the auger wing.
  • the closing element preferably comprises a stop side, which rests against the end of the worm wing and reinforces the worm wing in this area.
  • At least one reinforcing element is preferably designed as an intermediate element.
  • the intermediate element is located on the worm wing between the transition element and the end element.
  • the transition element and the closing element and several of the intermediate elements can be arranged.
  • a sleeve is pushed onto the core of the screw and secured.
  • the sleeve abuts the foremost reinforcing element (closing element) and thus prevents a twisting or loosening of this reinforcing element in the circumferential direction.
  • All other reinforcing elements are secured by their positive engagement with the respective further forward reinforcing element against twisting or loosening in the circumferential direction.
  • the reinforcing element is preferably made of hard metal and / or hard ceramic.
  • the sintered reinforcing member is made of a ceramic hard material such as tungsten carbide and a tough matrix of cobalt and nickel or iron.
  • the invention further comprises a method for producing a screw.
  • the screw is especially designed for use in a screw extruder.
  • the process produces the already described screw.
  • a provision of the soul takes place, wherein on the soul at least one Schneckeneriel is arranged.
  • At least one reinforcing element is turned on on this screw wing.
  • the reinforcing element has the described U-shaped cross-section. The turning takes place along the longitudinal axis and in the circumferential direction.
  • the at least one reinforcing element is produced in one piece, preferably in a 3D printing.
  • a green compact of the reinforcing element is produced.
  • the green body is preferably produced in a 3D print.
  • the green compact is sintered to form the reinforcing element.
  • the green compact is wound on the screw wing as described and then sintered on the screw wing.
  • all the reinforcing elements used are first turned on the worm wing and then sintered all reinforcing elements together.
  • the invention further comprises a press screw separator with one of the described screws or with a screw, produced by a method described here.
  • FIGS. 1 to 7 show a screw 1 or details of the screw 1 of a press screw separator 100th
  • the screw extruder 100 comprises a housing 101, which in FIG. 1 partially broken away.
  • a drive 102 is flanged with electric motor and gearbox.
  • a cylindrical sieve 106 In the housing 101 is a cylindrical sieve 106. Through the housing 101 and the sieve 106 extends the screw 1.
  • the screw 1 is connected to the drive 102, so that the screw 1 can be set in rotation.
  • an inlet 103 is formed in the housing 101 for the slurry.
  • a drain 105 Radially outside the screen 106 is a drain 105 for passing through the screen 106 to the outside liquid components of the pulp.
  • the worm 1 comprises a core 2 and two worm wings 3 wound around the core 2.
  • a discharge regulator 104 is located on the housing 101.
  • the core 2 has a region without worm wings 3 which extends into this discharge regulator 104.
  • a plug of the solids of the slurry forms.
  • the core 2 extends along a longitudinal axis 30 of the screw 1. Perpendicular to the longitudinal axis 30, a radial direction 31 is defined. Around the longitudinal axis 30 around a circumferential direction 32 is defined. Along the longitudinal axis 30 and in the circumferential direction 32, the screw vanes 3 are wound. The pitch of the screw 1 results from the distance between the two screw flights 3, parallel to the longitudinal axis 30.
  • the two worm wings 3 each have a reinforced area, which is formed by a plurality of reinforcing elements 4.
  • a reinforcing element 4 is formed as a final element 10, a reinforcing element 4 formed as a transition element 15 and a plurality of reinforcing elements 4, formed as intermediate elements fourteenth
  • FIGS. 5 to 7 show these three different types of reinforcing elements 4.
  • Each of the figures shows a respective reinforcing element 4 of the one worm wing 3 and the other worm wing 3. den FIGS. 5 to 7 It can be seen that the reinforcing elements 4 each have a U-shaped cross-section. This cross section is formed by a front leg 8, a rear leg 9 and a region connecting the two legs 8, 9 together.
  • Each reinforcing element 4 is made in one piece, for example by casting, sintering or 3D printing.
  • the worm wings 3 each comprise a front axial side 5 which faces the discharge regulator 104, an opposite rear axial side 6 and a radial side 7.
  • the radial side 7 of the worm wings 3 faces radially outwards and thus towards the sieve 106.
  • the front leg 8 abuts against the front axial side 5.
  • the rear leg 9 abuts against the rear axial side 6.
  • the transition region between the two legs 8, 9 covers the radial side 7 and is preferably located on the radial side 7.
  • FIGS. 5 to 7 show, the two legs 8, 9 of the U-shape are arranged parallel to each other. There are no undercuts that would hold the respective reinforcing element 4 with respect to the radial direction 31 positively on the worm wing 3.
  • the reinforcing elements 4 extend over a relatively large length along the helical screw flights 3.
  • the angle ⁇ is defined.
  • FIG. 3 shows a schematic view of the screw 1 in a plane perpendicular to the longitudinal axis 30 level. In this illustration, it can be seen that the single reinforcing element 4, as a one-piece component, extends over the angle ⁇ . In the illustrated embodiment, the angle ⁇ is 90 °.
  • reinforcing element 4 formed as a transition element 15, has a tapered portion 16.
  • the reinforcing element 4 merges without edge into the non-reinforced region of the worm wing 3.
  • reinforcing element 4 designed as a closure element 10
  • This stop side 11 covers the end of the worm wing 3.
  • the stop side 11 extends from the core 2 to the radial end of the worm wing 3.
  • FIG. 4 shows a sleeve 12, as shown in FIG. 2 , on the soul 2 is attached.
  • the sleeve 12 has in each case a blocking edge 13 for the two worm wings 3. This blocking edge 13 bears against the closing element 10.
  • the sleeve 12 is fixedly connected to the core 2, for example via a press or transition fit. As a result, the sleeve 12 prevents the reinforcing elements 4 from rotating or loosening along the circumferential direction 32.
  • FIGS. 5 to 7 show further that the front leg 8 has on its outer side a first leg length 33 and the rear leg 9 on its outer side a second leg length 34.
  • the two leg lengths 33, 34 are measured parallel to the radial direction 31.
  • the first leg length 33 is greater than the second leg length 34.
  • the front axial side 5 is primarily reinforced.
  • FIG. 5 shows a third length 35, also parallel to the radial direction 31.
  • the stop side 11 towards the first leg length 33 increases up to this third length 35, so that the front leg 8 merges into the stop side 11.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Centrifugal Separators (AREA)
  • Cyclones (AREA)
  • Gears, Cams (AREA)
  • Treatment Of Sludge (AREA)
EP18181313.0A 2017-07-13 2018-07-03 Vis d'un séparateur à vis de pression Active EP3427937B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
HRP20220394TT HRP20220394T1 (hr) 2017-07-13 2018-07-03 Spirala pritisnog zavojnog separatora
SI201830598T SI3427937T1 (sl) 2017-07-13 2018-07-03 Konični polž vijačnega ločevalnika
PL18181313T PL3427937T3 (pl) 2017-07-13 2018-07-03 Ślimak ślimakowego separatora tłoczącego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017212008.8A DE102017212008A1 (de) 2017-07-13 2017-07-13 Schnecke eines Pressschneckenseparators

Publications (2)

Publication Number Publication Date
EP3427937A1 true EP3427937A1 (fr) 2019-01-16
EP3427937B1 EP3427937B1 (fr) 2022-01-12

Family

ID=62846005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18181313.0A Active EP3427937B1 (fr) 2017-07-13 2018-07-03 Vis d'un séparateur à vis de pression

Country Status (9)

Country Link
EP (1) EP3427937B1 (fr)
DE (1) DE102017212008A1 (fr)
DK (1) DK3427937T3 (fr)
ES (1) ES2908959T3 (fr)
HR (1) HRP20220394T1 (fr)
HU (1) HUE058222T2 (fr)
PL (1) PL3427937T3 (fr)
PT (1) PT3427937T (fr)
SI (1) SI3427937T1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6917102B1 (ja) * 2021-04-30 2021-08-11 株式会社アクアトリム 脱水装置
JP2024004425A (ja) * 2022-06-28 2024-01-16 株式会社和田機械 食品原料の裏ごし機

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022100751U1 (de) * 2022-02-10 2023-05-17 Vogelsang Gmbh & Co. Kg Förderschnecke für einen Schneckenseparator

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2289411A1 (fr) * 1974-10-30 1976-05-28 Egretier M Perfectionnements aux vis d'archimede
EP0034847A1 (fr) * 1980-02-19 1981-09-02 Metallgesellschaft Ag Pièces d'oeuvre à bords et/ou surfaces blindés
DE3140364A1 (de) * 1981-10-10 1983-04-28 Siebtechnik GmbH, 4330 Mülheim Foerderschnecke, insbesondere fuer vollmantel-zentrifugen
DE3907817A1 (de) * 1989-03-10 1990-09-13 Heinz Kasten Vorrichtung und verfahren zur entwaesserung von guelle und klaerschlamm
DE4214217A1 (de) 1992-04-30 1993-11-04 Fan Engineering Gmbh Vorrichtung zur anordnung von verschleisselementen an schnecken von pressschneckenseparatoren
JPH10128156A (ja) * 1996-11-05 1998-05-19 Nippei Toyama Corp スクリューコンベア型遠心分離機
DE202012008077U1 (de) 2012-08-23 2012-09-17 Röhren- und Pumpenwerk Bauer Gesellschaft m.b.H. Pressschneckenseparator zum Abscheiden von Feststoffen aus einem Feststoff-Flüssigkeits-Gemisch
DE202012011864U1 (de) 2012-12-11 2013-01-14 Röhren- und Pumpenwerk Bauer GmbH Pressschneckenseparator
CA2939609A1 (fr) * 2015-12-07 2017-06-07 Yuehua Xu Compositions de matrice metallique et methodes de fabrication associees

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2289411A1 (fr) * 1974-10-30 1976-05-28 Egretier M Perfectionnements aux vis d'archimede
EP0034847A1 (fr) * 1980-02-19 1981-09-02 Metallgesellschaft Ag Pièces d'oeuvre à bords et/ou surfaces blindés
DE3140364A1 (de) * 1981-10-10 1983-04-28 Siebtechnik GmbH, 4330 Mülheim Foerderschnecke, insbesondere fuer vollmantel-zentrifugen
DE3907817A1 (de) * 1989-03-10 1990-09-13 Heinz Kasten Vorrichtung und verfahren zur entwaesserung von guelle und klaerschlamm
DE4214217A1 (de) 1992-04-30 1993-11-04 Fan Engineering Gmbh Vorrichtung zur anordnung von verschleisselementen an schnecken von pressschneckenseparatoren
JPH10128156A (ja) * 1996-11-05 1998-05-19 Nippei Toyama Corp スクリューコンベア型遠心分離機
DE202012008077U1 (de) 2012-08-23 2012-09-17 Röhren- und Pumpenwerk Bauer Gesellschaft m.b.H. Pressschneckenseparator zum Abscheiden von Feststoffen aus einem Feststoff-Flüssigkeits-Gemisch
DE202012011864U1 (de) 2012-12-11 2013-01-14 Röhren- und Pumpenwerk Bauer GmbH Pressschneckenseparator
CA2939609A1 (fr) * 2015-12-07 2017-06-07 Yuehua Xu Compositions de matrice metallique et methodes de fabrication associees

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6917102B1 (ja) * 2021-04-30 2021-08-11 株式会社アクアトリム 脱水装置
JP2022171047A (ja) * 2021-04-30 2022-11-11 株式会社アクアトリム 脱水装置
JP2024004425A (ja) * 2022-06-28 2024-01-16 株式会社和田機械 食品原料の裏ごし機

Also Published As

Publication number Publication date
HUE058222T2 (hu) 2022-07-28
SI3427937T1 (sl) 2022-05-31
PT3427937T (pt) 2022-03-15
EP3427937B1 (fr) 2022-01-12
DK3427937T3 (da) 2022-03-28
PL3427937T3 (pl) 2022-05-09
HRP20220394T1 (hr) 2022-05-27
ES2908959T3 (es) 2022-05-04
DE102017212008A1 (de) 2019-01-17

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