EP0062576B1 - Kontinuierlich arbeitende Zentrifuge - Google Patents

Kontinuierlich arbeitende Zentrifuge Download PDF

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Publication number
EP0062576B1
EP0062576B1 EP82400571A EP82400571A EP0062576B1 EP 0062576 B1 EP0062576 B1 EP 0062576B1 EP 82400571 A EP82400571 A EP 82400571A EP 82400571 A EP82400571 A EP 82400571A EP 0062576 B1 EP0062576 B1 EP 0062576B1
Authority
EP
European Patent Office
Prior art keywords
shaft
continuously operating
hydro
rotation
wall
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
Application number
EP82400571A
Other languages
English (en)
French (fr)
Other versions
EP0062576A1 (de
Inventor
Luc Darbonne
Hubert Darbonne
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.)
Daregal SA
Original Assignee
Daregal SA
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 Daregal SA filed Critical Daregal SA
Priority to AT82400571T priority Critical patent/ATE13819T1/de
Publication of EP0062576A1 publication Critical patent/EP0062576A1/de
Application granted granted Critical
Publication of EP0062576B1 publication Critical patent/EP0062576B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/04—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl

Definitions

  • the present invention relates to a continuous wringer, that is to say a wringer having a perforated wall of revolution driven in rotation about its axis, the product flow to be wrung circulating in the axial direction of the wringer.
  • spin dryers generally operate by successive loads, that is to say that a certain volume of material to be wrung is poured into the tank, generally with a vertical axis of the wringer and is removed therefrom after treatment.
  • Dryers, ovens or the like which consist of a wall of revolution driven in rotation about its axis and which operate continuously, the flow of product to be dried being driven in the axial direction of the device.
  • the axial displacement is obtained by simple gravity flow when the axis is inclined, by helical screws or fixed oblique walls which slide the material on the cylindrical wall or by helical fins integral with the wall which cause the material by lifting it along the peripheral wall to slide it by gravity downstream.
  • the treated material is subjected to a centrifugal force much greater than the force of gravity, which the plate against the wall and one cannot use natural progression by gravity to circulate the material.
  • you cannot use deflectors, worms with an axis parallel to the axis of the drum or fixed oblique walls because due to the centrifugal force, the friction force on the perforated wall would be too large, there would be a jam against the deflectors and the material could be damaged.
  • Patent FR-A-1057 268 proposes a so-called continuous operation wringer comprising an extractor member constituted by an endless screw with an axis parallel to the axis of the basket; however, this extractor only advances an internal layer of wrung material and leaves a continuous layer of material against the wall. This patent offers no solution to the above problems.
  • the present invention aims to achieve, despite the above impossibilities, a continuous wringer in which the material progresses from the inlet to the outlet without being subjected to intense mechanical stresses.
  • the continuous wringer with a perforated wall of revolution driven in rotation about its axis, comprising advancing members acting on the layer of material, to make it advance parallel to the axis of the wringer is characterized in that the path of the advancement members in the part where said members cooperate with the layer of treated material applied against the perforated wall constantly has a component in the diametral plane and an axial component directed downstream.
  • the material is, in the area of action of the advancing members, driven over a relatively small distance downstream but, due to the component in the diametral plane which can be substantially equal to the peripheral speed of the perforated wall therefore of the layer of material, there can be no jamming.
  • the advancement members are constituted by radial elements mounted on a shaft mounted obliquely to the axis of the wall of revolution in the internal volume delimited by said wall of revolution, the useful radius of each radial element being slightly less than the smallest distance from the shaft to the perforated wall in a plane perpendicular to said shaft comprising the radial element considered.
  • the shaft carrying the advancement members could be mounted for free rotation, the rotation being ensured by the thrust on the advancement organs of the material to be wrung; it is however preferable to drive the shaft in rotation positively, the direction of rotation and the speed of the shaft being such that, in the part of their circular trajectory where they come close to the wall, the ends of the radial elements move downstream, their peripheral speed being substantially equal to or preferably slightly higher than the peripheral speed of the internal surface of the perforated wall.
  • the advancement members are constituted by elements mounted with free rotation around ends of integral axes to form a zigzag shaft, the general line of the shaft being parallel to the generator of the drum and eccentric relative to the axis of said drum. This makes it possible to use elements of identical radial length and to lengthen the drum of the wringer.
  • the wringer can have either a horizontal, vertical or oblique axis.
  • the perforated wall may be cylindrical, frustoconical or have any other form of director, in a broken or curvilinear line giving it a general cylindro-frustoconical shape, in coil, in barrel or other.
  • the drum In the case of a frustoconical or cylindro-frustoconical shape the drum can be convergent or divergent from upstream to downstream.
  • this preferably has its two ends at the same distance from the perforated wall or, in the case of a non-cylindrical perforated wall, at distances proportional to the radii of said perforated wall in the corresponding diametrical planes.
  • the downstream end of the shaft may be at a distance from the perforated wall greater or proportionally greater than that of the upstream end.
  • the longitudinal spacing of the neighboring radial elements must be smaller the less their axis of rotation, the lower the arc in which the radial elements cooperate with the mass of material, that is to say that the axis of rotation is closer to the wall, and that the angular spacing of the neighboring radial elements is greater.
  • the radial elements can be arranged in the form of radial plies, possibly consisting of discs, spokes having a greater or lesser elasticity, masses such as brushes or foam rollers, worms or radial longitudinal plies such as continuous walls, pallets or rakes.
  • the angle formed by the axis of rotation of the advancing member with the axis of the wringer drum is a function of the product to be treated and its mechanical characteristics as well as the desired flow rate.
  • the larger this angle the higher the axial component of the peripheral speed of the advancing member relative to the diametrical component, but the more the peripheral speed of the radial elements of the advancing member will vary within wide limits. if they are attached to the same tree. Due to the increase in the axial component, the material flow will be increased.
  • the speed of the wringer can, for a given spin speed, also be increased by increasing the number of advancing members acting on one revolution of the drum. It is also possible to increase the speed of rotation of the machine, but this is not always possible from the mechanical point of view or because of the mechanical resistance of the treated material.
  • the wringer according to the invention can be used for the continuous dewatering of practically all mineral, animal or vegetable materials and in particular for the preliminary treatment of materials which must be subjected to drying by lyophilization, heating, etc.
  • Mechanical spinning is an energy-efficient means of extracting loose water such as washing water, etc.
  • the layer of material is stirred in the passage of the advancing members, which further facilitates the elimination of water compared to conventional wringing.
  • the wringer comprises, in the various embodiments, a perforated wall of revolution 1 which is represented as a cylindrical wall, which is rotated in a known manner around its axis so that the centrifugal force exerted on the material applied against the wall is several times greater than the force of gravity.
  • Reference 2 designates the perforations of which only a small number is shown.
  • a shaft 3 In this enclosure and in the embodiment of Figures 1 to 4 is mounted obliquely by bearings not shown, a shaft 3.
  • the points X where the shaft 3 intersects the end surfaces of the drum are equidistant from said surface.
  • discs 4 On this shaft are mounted discs 4 which could be replaced by radial rods, pallets or the like depending on the nature of the material to be wrung. The diameters of these discs 4 or the lengths of the rods or the like are such that their peripheral end comes to substantially tangent to the interior surface of the wall 1. As illustrated in FIG.
  • the angular development is determined according to which each disc will cooperate with the material.
  • Figure 4 there is shown the discs with thicker milking 5 the part which cooperates with the material.
  • the peripheral speed of the internal surface of the wall 1 being equal to F, the discs are driven or tend to set, if they are mounted with free rotation on the axis 3 or if the latter is mounted with free rotation, under the effect of the push of the material, a peripheral speed f which, at the point of tangency with the wall, decomposes into a speed fp substantially equal to F and a longitudinal component f1 directed downstream.
  • the disks 6 which could be replaced by radial rods, flat foam cylinders, impellers with peripheral edges of the blades shaped in a barrel shape, worms having the same casing , etc. are each mounted on a shaft end 7, the successive shaft ends being joined by offset pieces 8 and all having the same orientation therefore being in the same plane.
  • the discs 6 are therefore carried by the parallel axes of a zigzag support piece.
  • the mechanical rigidity of the support part can result either from the rigid assembly between the parts 8 and the shaft ends 7 on which the discs 6 are mounted for free rotation, or from the fact that the parts 8 are supported by non-bracing shown connecting them, passing between the discs 6, with longitudinal crosspieces 9 fixed at their ends on the support pillars 10.
  • the discs 6 can be rotated for example for each disc from a pulley 11 mounted on an axial shaft 12, by a pulley 13 of which it is integral and a belt 14. It is thus master of the peripheral speed f of each disc by playing on the diameter of the pulley 11 which may be of technical interest. It would also be possible to mount the advancement elements with free rotation. Finally it is possible to modify the nature of the advancement elements according to the direction of progression of the material in order to adapt them to the modification of fluidity and density of the dry matter and some of them may be blowing elements and / or heated.

Landscapes

  • Centrifugal Separators (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Drying Of Solid Materials (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Brushless Motors (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Fats And Perfumes (AREA)
  • Cyclones (AREA)

Claims (9)

1. Eine Zentrifuge für Dauerbetrieb mit einer perforierten Drehwandung (1), die um ihre Achse in Rotation angetrieben ist, die Fördereinrichtungen (4-6) aufweist, die auf die Schicht des Materials wirksam sind, um es parallel zur Achse der Zentrifuge fortbewegen zu lassen, dadurch gekennzeichnet, daß die Laufbahn (f) der Fördereinrichtungen in dem Bereich, wo besagte Einrichtungen mit der Schicht (m) des behandelten Materials, das gegen die perforierte Wandung (1) aufgetragen ist, zusammenwirken, konstant eine Teilkraft (fp) in der Diametralebene und eine Achsenteilkraft (fh), die strömungsabwärts gerichtet ist, aufweist;
2. Eine Zentrifuge für Dauerbetrieb gemäß Anspruch 1, dadurch gekennzeichnet, daß die Fördereinrichtungen aus radialen Elementen (4) gebildet sind, die auf einer Welle (3) gelagert sind, die schräg in Bezug auf die Achse der Drehwandung (1) im Innenraum, der durch besagte Wandung begrenzt ist, gelagert ist, wobei der zweckmäßige Radius eines jeden radialen Elementes um ein geringes kleiner als die geringste Distanz der Welle von der perforierten Wandung in einer lotrechten Ebene zu besagter Welle, die das betrachtete radiale Element aufweist, ist.
3. Eine Zentrifuge für Dauerbetrieb gemäß Anspruch 2, dadurch gekennzeichnet, daß die Welle (3) und/oder die Fördereinrichtungen (4) in freier Rotation gelagert sind.
4. Eine Zentrifuge für Dauerbetrieb gemäß Anspruch 2, dadurch gekennzeichnet, daß die Welle (3) in Rotation angetrieben ist, wobei der Rotationssinn und die Geschwindigkeit der Welle solche sind, daß, im Bereich ihrer kreisförmigen Laufbahn, wo sie in die Nähe der Wandung gelangen, die Enden der radialen Elemente (4) sich strömungsabwärts verlagern, wobei ihre periphere Geschwindigkeit (f) annähernd gleich oder vorzugsweise um ein geringes größer als die periphere Geschwindigkeit (F) der inneren Oberfläche der perforierten Wandung ist.
5. Eine Zentrifuge für Dauerbetrieb gemäß Anspruch 1, dadurch gekennzeichnet, daß die Fördereinrichtungen (6) durch Elemente gebildet sind, die in freier Rotation um den Stumpf der Achsen (7) gelagert sind, die miteinander verbunden sind, um eine Welle im Zickzack zu bilden, wobei die Generallinie der Welle parallel zur Erzeugenden der Trommel (1) und exzentrisch in Bezug auf die Achse besagter Trommel ist.
6. Eine Zentrifuge für Dauerbetrieb gemäß Anspruch 5, dadurch gekennzeichnet, daß die Fördereinrichtungen (6) in freier Rotation gelagert sind.
7. Eine Zentrifuge für Dauerbetrieb gemäß Anspruch 5, dadurch gekennzeichnet, daß die Fördereinrichtungen (6) in Rotation angetrieben sind (11, 12, 13, 14).
8. Eine Zentrifuge für Dauerbetrieb gemäß Anspruch 2, dadurch gekennzeichnet, daß die schräge Welle (3) ihre zwei Enden (X-X) in einer gleichen Distanz von der perforierten Wandung (1) oder, im Fall einer nichtzylindrischen Wandung, in Distanzen, die den Radien besagter perforierter Wandung in den korrespondierenden Diametralebenen proportional sind, hat.
9. Eine Zentrifuge für Dauerbetrieb gemäß Anspruch 2, dadurch gekennzeichnet, daß das untere Ende der schrägen Welle (3) in einer Distanz zur perforierten Wandung (1) ist, die größer oder proportional größer als jene des oberen Endes ist.
EP82400571A 1981-03-31 1982-03-30 Kontinuierlich arbeitende Zentrifuge Expired EP0062576B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82400571T ATE13819T1 (de) 1981-03-31 1982-03-30 Kontinuierlich arbeitende zentrifuge.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8106427 1981-03-31
FR8106427A FR2502985A1 (fr) 1981-03-31 1981-03-31 Essoreuse en continu

Publications (2)

Publication Number Publication Date
EP0062576A1 EP0062576A1 (de) 1982-10-13
EP0062576B1 true EP0062576B1 (de) 1985-06-19

Family

ID=9256816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82400571A Expired EP0062576B1 (de) 1981-03-31 1982-03-30 Kontinuierlich arbeitende Zentrifuge

Country Status (14)

Country Link
US (1) US4432148A (de)
EP (1) EP0062576B1 (de)
JP (1) JPS588978A (de)
AT (1) ATE13819T1 (de)
CA (1) CA1166443A (de)
DE (1) DE3264235D1 (de)
DK (1) DK156816C (de)
ES (1) ES510932A0 (de)
FI (1) FI69574C (de)
FR (1) FR2502985A1 (de)
IE (1) IE52722B1 (de)
IL (1) IL65393A (de)
NO (1) NO154040C (de)
YU (1) YU69782A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565015A (en) * 1983-07-27 1986-01-21 Gala Industries, Inc. Centrifugal pellet dryer
DE3430127C2 (de) * 1984-08-16 1987-04-02 Krauss-Maffei AG, 8000 München Vorrichtung zum Trocknen von feinkörnigen Feststoffpartikeln
JPS60177017U (ja) * 1984-05-02 1985-11-25 ザ・パツク株式会社 包装箱
DE4038954C2 (de) * 1990-12-06 1994-02-10 Wolfgang Eder Verfahren zum Abtransportieren und Zentrifuge zur Durchführung des Verfahrens
JPH06255636A (ja) * 1993-02-26 1994-09-13 Asahi Breweries Ltd 天パットシート装着装置
AU4485796A (en) * 1996-01-11 1997-08-01 Interlicense Den Haag B.V. Device and process for the aerobic treatment of organic substances
US7958650B2 (en) * 2006-01-23 2011-06-14 Turatti S.R.L. Apparatus for drying foodstuffs

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001668A1 (en) * 1980-11-12 1982-05-27 Georg Schilp Centrifuge with displaceable button for discharging solid material

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE405373C (de) * 1921-04-19 1924-11-04 Alfred Hernscher Mit staendigem Durchlauf arbeitende stehende Siebschleudermaschine
US1564665A (en) * 1923-07-16 1925-12-08 Leroy G Gates Centrifugal separator
FR1057268A (fr) * 1952-05-21 1954-03-08 G Pepin Fils Aine Ets Essoreuse à fonctionnement continu
US3313034A (en) * 1965-08-02 1967-04-11 Leo J Meyer Nut meat de-watering machine
DE1632292A1 (de) * 1967-06-16 1972-02-03 Ernst Heinkel Maschb Gmbh Siebzentrifuge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001668A1 (en) * 1980-11-12 1982-05-27 Georg Schilp Centrifuge with displaceable button for discharging solid material

Also Published As

Publication number Publication date
ATE13819T1 (de) 1985-07-15
ES8301670A1 (es) 1983-02-01
DK145382A (da) 1982-10-01
US4432148A (en) 1984-02-21
FI821108A0 (fi) 1982-03-30
EP0062576A1 (de) 1982-10-13
ES510932A0 (es) 1983-02-01
NO154040C (no) 1986-07-09
IE820745L (en) 1982-09-30
CA1166443A (en) 1984-05-01
DE3264235D1 (en) 1985-07-25
NO821054L (no) 1982-10-01
IL65393A0 (en) 1982-05-31
NO154040B (no) 1986-04-01
FI821108L (fi) 1982-10-01
FR2502985B1 (de) 1983-05-20
FI69574B (fi) 1985-11-29
DK156816B (da) 1989-10-09
IL65393A (en) 1985-03-31
YU69782A (en) 1986-08-31
DK156816C (da) 1990-02-26
FR2502985A1 (fr) 1982-10-08
FI69574C (fi) 1986-03-10
JPS588978A (ja) 1983-01-19
IE52722B1 (en) 1988-02-03

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