EP2782678A1 - Centrifugeuse discontinue comprenant un déchargeur pour décharger un produit - Google Patents

Centrifugeuse discontinue comprenant un déchargeur pour décharger un produit

Info

Publication number
EP2782678A1
EP2782678A1 EP12787749.6A EP12787749A EP2782678A1 EP 2782678 A1 EP2782678 A1 EP 2782678A1 EP 12787749 A EP12787749 A EP 12787749A EP 2782678 A1 EP2782678 A1 EP 2782678A1
Authority
EP
European Patent Office
Prior art keywords
centrifuge
hub
drum
arms
centrifuge drum
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
EP12787749.6A
Other languages
German (de)
English (en)
Other versions
EP2782678B1 (fr
Inventor
Hans-Heinrich Westendarp
Dirk SPANGENBERG
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.)
BMA Braunschweigische Maschinenbauanstalt AG
Original Assignee
BMA Braunschweigische Maschinenbauanstalt AG
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 BMA Braunschweigische Maschinenbauanstalt AG filed Critical BMA Braunschweigische Maschinenbauanstalt AG
Publication of EP2782678A1 publication Critical patent/EP2782678A1/fr
Application granted granted Critical
Publication of EP2782678B1 publication Critical patent/EP2782678B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • 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
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor
    • B04B11/05—Base discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/08—Skimmers or scrapers for discharging ; Regulating thereof
    • B04B2011/084—Skimmers or scrapers for discharging ; Regulating thereof with cables for cake removal

Definitions

  • the invention relates to a discontinuous centrifuge with a rotatable centrifuge drum, with a drive spindle, with a jacket and with a bottom, with a hub of the centrifuge drum, which hub has several arms for direct or indirect connection of the jacket of the centrifuge drum with the drive spindle of the centrifuge drum, with a scavenger for scavenging a product at clearance speed from the inner wall of the shell of the rotatable centrifuge drum, the scraper having a member which is pivotable about an axis, which axis is parallel to the axis of rotation of the centrifuge drum, the element having a cutting edge over almost the entire height of the centrifuge drum runs and after pivoting has contact with the product,
  • Discontinuous centrifuges are also used in particular for the separation of sugar crystals from sugar crystal suspensions.
  • a starting material is supplied from above, for example a magma with enriched crystal suspensions, and then treated in the centrifuge drum in such a way that a product, for example a crystallizate, settles on the inner surface of a jacket of the centrifuge drum.
  • the syrup exits through a working sieve, which lies on the mantle.
  • the crystal layers are removed from the inner surface of the jacket of the centrifuge drum by means of a spreader which extends over the entire height of the centrifuge drum and can be pivoted about an axis parallel to the centrifuge drum so that it can be cut into the sugar layers (or layers of another) Product) on the inside of the shell retracts and the crystals successively peeled off from the shell in this way.
  • the crystal layers peeled off in this way then fall downwards on their bottom due to gravity inside the centrifuge drum and are then removed there through a centric opening.
  • a hub having a plurality of arms which connect the shell of the centrifuge above the ground to a shaft or drive spindle which provides the drive for the rotation of the centrifuge drum and in the axis of the centrifuge drum runs.
  • this hub is three-dimensional stiffened and reinforced by means of internals, inclined arms and other elements. Since the scraper with its cutting edge or the paring knife and the elements of the hub with their arms would interfere with each other, the scraper is moved axially parallel to the axis by about 200 mm during the centrifuging process.
  • the scraper Before the peeling process, the scraper then moves vertically or axially parallel to the lowest point back towards the bottom of the centrifuge drum and is then only then pivoted about the pivot axis in the sugar layers.
  • a centrifuge for completely different purposes is known.
  • a scraper / knife device is proposed as a scavenger for a pendulum-mounted centrifuge for detaching a hard cake.
  • a plurality of scrapers are mounted on an arm which extends parallel to the shaft of the centrifuge drum, and engage in knives projecting from the cylinder wall.
  • an inner housing is provided. The entire concept is not suitable for sugar centrifuges.
  • the object of the invention is therefore to propose a discontinuous centrifuge, which is able to carry out a clearing process from an inner side of a jacket of a centrifuge drum with a reduced expenditure on equipment.
  • This object is achieved in a generic discontinuous centrifuge drum by means of the invention in that the arms of the hub have upper surfaces which lie below the drum base.
  • the discontinuous centrifuge according to the invention has the significant advantage that the scraper does not have to be designed to be movable in the vertical direction. A drive for a movement in the vertical direction for the Ausippor is no longer necessary. He only has to be able to perform his pivotal movement.
  • the scraper does not have to be partially lifted out of the drum to avoid collisions and obstructions. This means that any ineffective idle time, which has previously increased the cycle time and thus reduced the effectiveness of the machines, is eliminated.
  • the design of the drum hub is particularly favorable when it comes to three arms. Then, in particular, the ratio of the opening area relative to the mechanical stiffening elements of the centrifuge drum is optimal.
  • the opening area can be closed by means of a closure device.
  • the disc is not placed in one piece, but is divided into segments so that the segments fill the space between the arms of the hub and allow a free relative movement of the segments to the arms.
  • a centrifuge concept which is suspended and creates a pendulum option.
  • Such discontinuous centrifuges are also referred to as pendulum pendulum centrifuges. They are characterized, inter alia, by the fact that the Ausippor is movable relative to the centrifuge drum and the jacket, as it is not hung with or at least not part of the same suspension mechanism. By the invention but also occurs in these cases, no disturbance of the scraper with its clearing bar and his Räumpflug or paring knife and the centrifuge drum with his coat, bottom and the hub on the other hand. It is particularly advantageous beyond that the Ausipporkonstruzzy invention can absorb very high forces. This is particularly advantageous because it is easily possible in this way, the cutting edge of the scraper opposite to the direction of rotation of the drum and the sugar layer drive into it. High torques can be achieved.
  • FIG. 1 is a schematic sectional view of a discontinuous centrifuge in an embodiment of the invention; an enlarged view of the area of a hub of the centrifuge of Figure 1; a perspective view of the hub of Figure 2;
  • Figure 4 is a perspective view of the hub of Figure 3, inserted in a bottom of a centrifuge drum;
  • Figure 5 is a view of a floor area without the hub.
  • a centrifuge such as a sugar centrifuge
  • a centrifuge drum 10 is seen in a vertical central section.
  • the centrifuge drum 10 has a drive spindle 11, which also forms the vertically arranged axis of the centrifuge drum 10 and the rotary drive for the entire centrifuge drum 10 provides.
  • the drive spindle 1 1 is indicated only schematically.
  • the direction of rotation 12 is additionally marked by an arrow.
  • the centrifuge drum 10 also has a jacket 13, which is rotated by the rotary drive 1 1 in a rotary motion.
  • the jacket 13 is substantially cylindrical and covered on its inner wall by a not-shown working screen.
  • the sugar crystals remain on the inside of the jacket 13 in the form of a crystallizate 14 and form a kind of sugar layer there.
  • the bottom 15 is arranged substantially perpendicular to the axis of the centrifuge drum 10. However, the bottom 15 has openings 16 through which the crystals 14 can escape from the centrifuge drum 10 due to its gravity. These openings 16 are closed during the centrifuging process and are only then opened.
  • a Ausippor 20 is provided.
  • the scraper 20 has a scraper bar 21 and an element 22 arranged on the scraper bar 21, for example a paring knife 22 or a razor.
  • the peeling blade 22 or the ragging flight are pivotable relative to the raking bar about the axis formed by the raking bar 21.
  • the peeling blade 22 and the Räumpflug parallel to the axis of the centrifuge drum 10 and thus vertically. They extend over the whole or almost the entire height of the shell 13th
  • This pivotal movement causes the paring knife 22 can move into the crystallizate 14.
  • the centrifuge drum 10 rotates at clearance speed. This clearing speed is significantly lower than the rotational speed of the centrifuge drum 10 during the centrifuging operation.
  • the swiveling in of the element 22 or peeling blade causes the element 22 to successively peel off the layers of the crystallizate 14.
  • the sugar crystals of the crystallizate fall 14 due to their gravity within the centrifuge drum 1 1 down in the direction of the bottom 15 and there through the no longer closed openings 16th
  • the connection of the drive spindle 1 1 to the jacket 13 is made via a hub 30.
  • the hub is connected in the illustrated embodiment with an externa ßeren region of the bottom 15, which in turn adjoins the jacket 13 and is connected thereto.
  • the bottom 15 thus serves here for further transmission of the driving forces that are transmitted to it from the hub 30.
  • the hub 30 encloses in the illustrated embodiment, the drive spindle 1 1 and has a plurality of arms 31st
  • Free spaces (not visible in FIG. 1) between the arms 31, through which the sugar crystals of the crystallizate 14 can also pass downwards after passing through the openings 16 in the bottom 15, can be made.
  • the arms 31 are formed on an upper surface 32 so as to have a recessed portion 33.
  • FIG. 1 shows the section so far not technically exact, as in a preferred embodiment with three arms 31 in the sectional view not a symmetrical arrangement of two arms 31 would be seen.
  • the illustration is here in order to represent the core of the invention schematically meaningful.
  • the area of the hub 30 is shown enlarged.
  • the recessed portion 33 is formed rounded on the top 32 of the arms 31 of the hub 30.
  • a chamfer is made so that the top sides 32 of the arms 31 in the direction of the jacket 13 to the center about the drive spindle 1 1 towards an angle between 1 0 and 10 ° fall, preferably by an angle of 2 ° to 4 °.
  • This angle does not have to be constant, as can be clearly seen in particular in FIG.
  • the embodiment according to the invention is particularly suitable for a discontinuous pendulum pendulum centrifuge, as it proves to be advantageous for a sugar centrifuge here.
  • FIG. 3 shows a perspective view of the hub 30 from FIG. 2. It can be seen how centrally around the (not shown) drive spindle 1 1, an inner region of the hub 30 is provided, projecting from which three arms 31 each at an angle of 120 ° to each other outwardly.
  • the three arms 31 converge on the outside again into an annular element of the hub 30, on which the bottom 15 (not shown) is then attached. It can be clearly seen here that this hub 30 is capable of transmitting the rotational movement of the drive spindle 1 1 to the jacket 13 of the centrifuge drum 10. In this case, no area of the arms 31 of the hub 30 projects beyond the bottom 15 (not shown, but which is easily imaginable).
  • FIG. 4 now shows the interaction of the hub 30 with the floor 15.
  • the floor 15 covers those areas below the jacket 13 which are not occupied by the arms 31.
  • bottom closure 40 During the filling process of the magma and during the centrifuging process, the bottom closure 40 is arranged so that the bottom 15 is completely closed.
  • the bottom closure 40 is displaced relative to form the openings 16 and the crystals 14 can accelerate through the openings 16 in the bottom 15 fall.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

L'invention concerne une centrifugeuse discontinue qui comprend un panier (10) rotatif pourvu d'un arbre d'entraînement (11), d'une enveloppe (13) et d'un fond (15). Un moyeu (30) du panier (10) présente plusieurs bras (31) destinés à relier directement ou indirectement l'enveloppe (13) du panier (10) à l'arbre d'entraînement (11) du panier (10). Un déchargeur (20) sert à décharger un produit (14) de la paroi intérieure de l'enveloppe (13) du panier (10) rotatif. Ce déchargeur (20) présente un élément (22) qui peut pivoter autour d'un axe parallèle à l'axe de rotation du panier (10). Ledit élément (22) présente une lame qui s'étend sur pratiquement toute la hauteur du panier (10) et qui entre au contact du produit (14) après le pivotement. Le déchargeur (20) est conçu de manière à ne pas pouvoir être déplacé verticalement. Les bras (31) du moyeu (30) présentent des surfaces supérieures (32) qui se trouvent au-dessous du fond (15) du panier. Le déchargeur (20) est monté indépendamment de la suspension oscillante du panier (10).
EP12787749.6A 2011-11-24 2012-11-20 Centrifugeuse discontinue avec racle pour enlever un produit Active EP2782678B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011119265.8A DE102011119265B4 (de) 2011-11-24 2011-11-24 Diskontinuierliche Zentrifuge mit Ausräumer zum Ausräumen eines Produktes
PCT/EP2012/073092 WO2013076074A1 (fr) 2011-11-24 2012-11-20 Centrifugeuse discontinue comprenant un déchargeur pour décharger un produit

Publications (2)

Publication Number Publication Date
EP2782678A1 true EP2782678A1 (fr) 2014-10-01
EP2782678B1 EP2782678B1 (fr) 2017-05-24

Family

ID=47191782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12787749.6A Active EP2782678B1 (fr) 2011-11-24 2012-11-20 Centrifugeuse discontinue avec racle pour enlever un produit

Country Status (8)

Country Link
US (1) US9764337B2 (fr)
EP (1) EP2782678B1 (fr)
CN (1) CN103648653B (fr)
BR (1) BR112014000710A2 (fr)
DE (1) DE102011119265B4 (fr)
MX (1) MX359160B (fr)
RU (1) RU2584531C2 (fr)
WO (1) WO2013076074A1 (fr)

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DE102011119265B4 (de) * 2011-11-24 2018-01-04 Bma Braunschweigische Maschinenbauanstalt Ag Diskontinuierliche Zentrifuge mit Ausräumer zum Ausräumen eines Produktes
CN105032634B (zh) * 2015-07-30 2017-09-29 苏州盛天力离心机制造有限公司 全自动刮刀清饼一体装置
CN110068203B (zh) * 2019-03-18 2020-08-28 新昌县钢君农业机械有限公司 一种枇杷膏原料制备多重角度脱水装置
CN110665283B (zh) * 2019-10-29 2021-07-27 丽水奇异果信息技术有限公司 一种果汁饮料生产用果渣过滤装置
CN112156493A (zh) * 2020-09-21 2021-01-01 山东民基新材料科技有限公司 一种结晶离心器

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Also Published As

Publication number Publication date
CN103648653A (zh) 2014-03-19
EP2782678B1 (fr) 2017-05-24
DE102011119265B4 (de) 2018-01-04
US9764337B2 (en) 2017-09-19
BR112014000710A2 (pt) 2017-02-14
DE102011119265A1 (de) 2013-05-29
CN103648653B (zh) 2016-06-29
MX2014005894A (es) 2014-06-05
RU2584531C2 (ru) 2016-05-20
US20140256528A1 (en) 2014-09-11
WO2013076074A1 (fr) 2013-05-30
RU2014118499A (ru) 2015-12-27
MX359160B (es) 2018-09-18

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