WO2010130827A1 - Kontinuierlich arbeitende zentrifuge - Google Patents
Kontinuierlich arbeitende zentrifuge Download PDFInfo
- Publication number
- WO2010130827A1 WO2010130827A1 PCT/EP2010/056654 EP2010056654W WO2010130827A1 WO 2010130827 A1 WO2010130827 A1 WO 2010130827A1 EP 2010056654 W EP2010056654 W EP 2010056654W WO 2010130827 A1 WO2010130827 A1 WO 2010130827A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- product distributor
- bell
- elements
- ring
- centrifuge according
- Prior art date
Links
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
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/06—Arrangement of distributors or collectors in centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge
Definitions
- the invention relates to a continuous centrifuge for centrifuging Zucker spallmassen with an upwardly conically widened screen basket which rotates about a vertical axis, with a downwardly conically enlarged and reaching into the bottom region of the Siebkorbes product distributor, which is substantially coaxial with the screen basket, below forms a Abschand and rotated about the same vertical axis as the screen basket, with a provided within and in the upper region of the product distributor distributor pot as feeding device for Zucker sleepmassen in the axis of the centrifuge, with a division of the peripheral wall of the product distributor in a plurality of axially overlapping ring elements , with a surrounding the product distributor and conically extended bell.
- Centrifuges with which centrifuged sugar and the effluent syrup can be thickened at the same time, for example, are already known from DE 123 174 B1. These historical concepts have rotating, perforated drums provided with helical vanes at their upper or lower end faces. This forces the air to pass through the perforated drums to produce the desired evaporation.
- centrifuges for centrifuging sugar filling compounds are already known, for example, from DE 22 07 663 C3, DE 26 31 178 A1 or DE 38 28 204 C2.
- Such continuously operating centrifuges also known as sugar centrifuge or continuous centrifuges, can be used in the cane and beet sugar industry as well as in sugar refineries. They serve to mix, distribute and accelerate abandoned Zucker spallmassen and to free the crystals of the syrup, for example by washing by adding water or steam.
- the Zucker spallmasse is first placed in a distribution pot as a task device. This lies in the axial region of the centrifuge and is intended for a radial As uniform as possible distribution of Zucker spallmasse for further processing in the centrifuge care.
- the filling compound is entrained by adhesion to the wall of the distributor pot and thereby accelerated gradually to the peripheral speed of this wall.
- the filling material is distributed over the circumference of the distribution pot and is finally thrown over the upper edge of the distribution pot with constant Nachhne the filling material.
- the sugar filler mass strikes the inner surface of the product distributor after a short distance traveled in free flight, which can also be referred to as an acceleration bell or pre-spin drum.
- free flight the Zuckeryogllmasse from appropriately provided feed lines with steam or deck water can be applied.
- heating of the sugar fill masses may also be performed in a stationary, non-rotating element such as disclosed in U.S. Patent No. 4,052,304, in which the vapor from the centrifuge is directed upwardly in a swirling flow through the stationary one Element is led.
- nozzle-like openings can be provided in the wall of the stationary element.
- the rotating product distributor in the centrifuges for example from DE 22 07 663 C3 or DE 38 28 204 C2 are drum-like and widen slightly conically downwards. They form at their lower circumference a Abschrand from which the sugar filling masses reaching there are thrown to the outside in the actual, conically widened upward sieve basket, which rotates about the same vertical axis.
- EP 0 152 855 A3 proposes that the circumferential wall of the product distributor be divided into concentrically arranged ring elements. divide the different diameters and thereby keep the spaces between the ring elements up and down open.
- the ring elements should have an upper and a lower free horizontal Abschleuderkante so as to be able to eject both above and below the respective ring elements, the filling masses.
- the product distributor is made up of a plurality of mixer-followers, which have a spacing between them, and, on the other hand, the entire product distributor is surrounded by a stationary conical flared bell, that surrounds him with all-round play.
- the individual ring elements are each firmly connected to each other by means of webs and rotate accordingly synchronously. Aside from the lands, the annular gaps are free, allowing air to pass through the annular gaps in a direction approximately parallel to the ring elements, which improves the uniformity of the sugar fill masses moving radially outward during this flow perpendicular to the air streams.
- the bell is stationary, so that it allows a supply of air and / or steam from above into the area inside the bell in a simple form.
- the object of the invention is therefore to propose a generic continuously operating centrifuge, which allows such further improvement.
- this object is achieved in that between at least two of the ring elements of the product distributor a device with air guiding elements is provided, which have horizontally arranged, flat sheets, and which from these narrow rolls follow a sheet-like or vane-like manner from sheet metal surface regions are issued above.
- the air guiding elements can be shaped virtually freely and can be used at relatively high flow rates. lead speeds, since the rotational speeds of the product distributor around the axis of the centrifuge are relatively high.
- the devices with the air guide elements are designed so that they have horizontally arranged, flat sheets. From these surfaces, a variety of sheet metal surface areas is wing or scoop-like issued up. This results in a particularly practical form of the air guide elements, since the facilities can also be used to connect the ring elements and thus can be dispensed with other support structures for the rotating parts of the product distributor.
- the region of the air guide elements can be well defined with the horizontally arranged flat sheets.
- the air guide elements are positioned at an angle of more than 30 ° and less than 50 °.
- the angles may additionally be kept adjustable in order to take into account, for example, a changeover of the centrifuge to another filling material, for example another mass of sugar.
- another filling material for example another mass of sugar.
- the sugar filling masses also differ from year to year in various physical properties, which are caused by the different weather conditions in which grow the sugar beet or possibly the sugarcane, from which the Zucker Glallmassen be obtained.
- the bell or Hau be be aware of co-rotating designed. While in the prior art, a stationary bell was advantageous to cause certain pressure conditions in the annulus between product distributor and bell, this is now no longer mandatory in view of the provision of air guide elements between the ring elements, so that the benefits of a co-rotating bell are used can. These advantages are that there is no relative movement between the ring elements and the bell more and thus no specific safety distances in the event of malfunction and the like must be provided.
- a particularly preferred embodiment of the invention also makes use of the common rotation of the bell and of the product distributor with its ring elements, in which air guiding elements, for example air baffles, are also arranged between the product distributor and the bell or hood.
- the lowermost portion of the inner wall of the bell can project beyond the product distributor and so a further ring element can be formed for collecting and further transporting the Zucker Glallmassen thrown off from the discharge edge of the product distributor.
- This additionally resulting ring element has the advantage that the Zuckeryogllmasse, which impinges on the inside of this further ring element is not bgebremst as in a stationary bell in EP 0487780 B 1a, but even enters an additional acceleration.
- the rotational speed (as viewed in distance per time on the circumference of the inside of the rotating bell) further increases due to the increasing diameter.
- the provision of further air guide elements is of particular advantage, as can easily be imagined.
- one or more feed elements are provided, which are provided by a jet, in which steam enriched in syrup droplets is fed into the interior of the bell.
- the feed element to the bell medium so for example air, steam or syrup-enriched steam from above into the annular space between the inside of the bell and the outside of the ring elements of the product distributor introduces. This is much easier to implement mechanically.
- Figure 1 is a section through an embodiment of the invention
- Figure 2 is a perspective view of a detail of the embodiment of Figure 1;
- FIG 3 shows a section through the detail of Figure 2 on a larger scale.
- the centrifuge shown in Figure 1 is used for centrifuging sugar filling masses to separate from so-called magma in the course of a multi-stage treatment first mother solution and then to clean the liberated from the mother liquor sugar crystals of residual foreign components.
- the centrifuge has a stationary frame 10 with a bottom 1 1, with
- Manhole 15 arrives. Also, the hopper 14 and the shaft 15 are stationary.
- a screen basket 20 which extends from the region of the bottom 1 1 almost to the cover 13 in the upper region of the centrifuge.
- the screen basket 20 is axisymmetric to a vertical axis 16 and widens conically from bottom to top. Sugar particles migrate upwards on the inner wall of this screen basket 20 during a relatively rapid rotation of the screen basket 20 and are then thrown outwards at the upper edge 22 of the screen basket 20.
- the distributor pot 30 is drum-shaped and has a closed bottom 31 and cylindrical walls 32.
- the filled into the hopper 14 Zuckerhellmassen get out of the hopper 14 via the shaft 15 in the distribution pot 30.
- vertical rods 34 which serve for mixing and homogenizing the Zucker Stahlsen within the distribution pot 30.
- the sugar filling masses are effectively stirred by these rods 34 and moved relative to each other. Since more sugar masses are constantly pushing into the distributor pot 30, they are pushed upwards therefrom via an edge 33 of the cylindrical wall 32.
- the particles of the sugar filling masses have a centrifugal force due to the rotating wall 32 of the distributor pot 30. Due to this centrifugal force, they are discharged to the outside and hit the inner wall of the product distributor 40.
- the product distributor 40 and the distributor pot 30 are connected to each other and rotate together.
- the product distributor 40 consists of several annular elements. These annular elements 41, 42, 43 and a further explained below ring element 54 are concentric with each other and to the axis 16. They expand in diameter from top to bottom and each of these four ring elements 41, 42, 43 and 54 is also conically widened downwards. Incidentally, however, each of the ring elements is cylindrically symmetric.
- each ring element 41, 42 and 43 Between the peripheral lower edge of each ring element 41, 42 and 43 and the upper Uml aufend en Ka nte d it following the ring element 42, 43 and 54, the diameter increases accordingly jump.
- the attachment of the ring elements to each other in these discontinuous areas will be described in more detail below with reference to Figures 2 and 3.
- the ring elements 41, 42, 43 of the product distributor 40 are surrounded with all-round play by a downwardly conically widened hood or bell 50.
- This bell 50 projects beyond the ring 43 and forms with its lower portion in this way the ring 54.
- the bell 50 rotates with the product distributor 40 and is also symmetrical to the axis 16.
- This media supply via the feed element 52 may od or steam optionally also introduce another gas or a medium with finely divided syrup or other additives in the area within the bell 50 and outside of the product distributor 40.
- This medium is, for example, a medium used for processing a crystal suspension.
- This medium then passes through the areas between the rings 41, 42, 43, 54 in connection with the descriptions of Figures 2 and 3 in the form discussed in more detail in the area within the product distributor 40 and thus applied there the Zucker spallmassen located there.
- the sugar filling masses or crystal masses of the crystal suspension thrown from the distributor cup 30 onto the inner wall of the ring element 41 pass from one ring element 41, 42, 43 to the next lower one, The previous conically surrounding outer ring member 42, 43, 54. They are in each case when overcoming the difference in diameter between two ring elements 41, 42, 43, 54 circulated and homogenized, as they at the same time from the steam, the air or the other media used in particular for the preparation of a crystal suspension are applied.
- baffle 21 From this baffle 21 they get to a firmly connected to the basket bottom of the screen basket 20 and this baffle 21 screen and migrate due to the centrifugal force on the screen of the screen basket 20 upwards.
- ka n n e e water feeding device can be provided.
- the strainer 20 is closed at the top by an edge 22. From this edge 22, the sugar particles are thrown to the outside, collected there and further processed (not shown).
- the bell 50 is shown enlarged in perspective with the product distributor 40 and the ring elements and other details.
- the bell 50 is shown transparent, but in practice this is not the case.
- This upper edge is concealed by a horizontally extending and over this upper edge 33 of the cylindrical walls 32 in the direction of the axis 16 projecting annular cover surface 47, protrude outwardly from the projections 48 to the bell 50 and carry this or are fixed thereto.
- annular gap extending in the conventional centrifuges from EP 0 487 780 B1 is covered according to the invention here by a device 61 made up of numerous air guiding elements or air guiding elements.
- this device 61 has a metal sheet covering this annular gap in an annular manner, which is produced in the spinning process.
- tabs are preferably cut into the pressing parts by a laser beam and then these tongues, which are initially marked only by means of the cut lines, are then subsequently shaped in the pressing process in such a way that a type of guide plate is produced.
- Each of the tabs of the device 61 projects in the same form as a guide plate upwards.
- all also have a same bending angle of preferably about 40 degrees. The size of this bending angle can be selected and optimized depending on the consistency of the sugar filling masses to be processed in the centrifuge, for example taking into account a preferred rotational speed of the ring elements 41, 42, 43 about the axis 16.
- the exact shape of the baffles or tabs from which the baffles arise can be modified according to specific requirements and be about triangular or square.
- the function of the baffles is to additionally provide or enhance a suction action in the product distributor 40 which creates a flow of the air, vapor or medium used to treat the crystal suspension, from above through the areas cleared by the bent tabs the sheet of the device 61 with the air guide elements.
- the baffles or tabs represent in this embodiment, the air guide elements of the device 61.
- the feed element 52 is now required only to influence and fix the composition of the medium or vapor or air in the region inside the bell 50 and outside the product distributor 40.
- the medium flowing through the air baffles of the device 61 with the air guide elements flows virtually parallel to the surfaces of the ring elements 41 and 42 downwards; the flow direction is not necessarily exactly perpendicular, but is influenced by the air guide elements. In any case, there is a strong and substantial admission of the perpendicular to the flowing media outwardly in the horizontal direction thrown sugar crystals instead, which are acted upon in this way with the vapor molecules or other desired additives.
- the same process is repeated, as well as the space between the lower edge of the second ring member 42 and the upper edge of the third ring member 43 is designed in the same shape and having a device 62 with air guide elements, which corresponds to that of the device 61, but a little has larger diameter.
- This can have the consequence that the air baffles or air guide elements are designed differently, and their number may differ from that of the first device 61.
- spacers 67 could also be designed in the form of air guide elements. They can also be provided at other positions. It is also possible to connect other parts at other points. S owo h l d i e spacers 67 and other fasteners can be provided detachably.
- the bell 50 rotates synchronously with the product distributor 40 and its ring elements 41, 42, 43, it is fixed to the upper cover 47 with the projections 48 as mentioned above.
- the ring elements 41, 42, 43 are also firmly connected to each other by the means 61 and 62, so that it requires no further holding mechanisms or struts.
- aerodynamically optimized sheets At the projections 48 between product distributor 40 and bell 50 are also aerodynamically optimized sheets to recognize, which can be preferably arranged in plug-in technology.
- This aerodynamically optimized sheets also lead to a Sog bin from top to bottom or in other words, they push the air, the steam or other medium within the interior of the bell 50 down to a certain extent.
- a co-rotating hood or bell is slipped over the multi-stage product distributor, this co-rotating bell simultaneously forms the last stage or the last ring element for the product distributor.
- This has the advantage that the medium introduced for the preparation of the crystal suspension, preferably steam, water or syrup, is completely mixed with the crystal suspension of the sugar filling compounds and that this mixture is accelerated continuously until it leaves the last step of the lower ring element.
- the medium is applied over the rotating parts through the tubular delivery member 52 (see FIG. 1) at one or more locations and drawn through the baffles of the device 64 into the area between the bell 50 and product distributor 40.
- the medium is applied over the rotating parts through the tubular delivery member 52 (see FIG. 1) at one or more locations and drawn through the baffles of the device 64 into the area between the bell 50 and product distributor 40.
- the values for the selection of the distances between two ring elements or for the size of a jump are between a / n and a / second If, for various reasons, one wishes to supply a relatively large amount of steam, for example in the first stage, then the distance between the upper edge 33 of the product distributor 40 and the inner side of the uppermost ring element 41 can be correspondingly increased and the distances between the other ring elements correspondingly reduced. You can also proceed between the other ring elements. For this purpose, each of the ring elements and the air guide elements are exchanged.
- This number of stages is given in the illustrated embodiment by the three ring members 41, 42, 43 and the fourth ring member 54; However, it can also be provided a smaller or larger number of ring elements. However, the illustrated shape is the preferred design.
- the distance between the product distributor 40 and the screen basket 20 or the centrifuge drum can be optimally performed by rotating all parts with the same frequency.
- the distribution pot 30 can be made larger than the task location of the crystal suspension in diameter in order to achieve a better treatment of Zucker sleepllmassen.
- FIG. 3 again shows a section through the detail of the centrifuge, which can be seen in a perspective view in FIG. It can be seen on the outside of the bell 50, which forms the fourth ring member 54 in its lower portion, and therein the product distributor 40 with the other three ring elements 41, 42, 43. Between the ring elements 41 and 42 on the one hand and 42 and 43 on the other hand, one sees in each case the means 61 and 62 with the air guide elements, which are only indicated here. However, it can be seen that the medium between the inside of the bell 50 and the outside of the ring members 41, 42 and 43 of the product distributor 40 are drawn by these means 61 and 62 into the interior of the product distributor 40.
- the distribution pot 30 with its cylindrical wall 32 and its upper edge 33 and the bars 34 on the bottom 31 can be seen above within the first ring element 41.
- the upper edge 33 of the cylindrical wall 32 of the distribution pot 30 is not covered here and clearly shows that from this upper edge 33, the Zucker spallmassen after
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- Centrifugal Separators (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/319,524 US9180467B2 (en) | 2009-05-15 | 2010-05-14 | Continuously operating centrifuge |
EP10721469.4A EP2429711B1 (de) | 2009-05-15 | 2010-05-14 | Kontinuierlich arbeitende zentrifuge |
BRPI1010977A BRPI1010977A2 (pt) | 2009-05-15 | 2010-05-14 | centrífuga que trabalha continuamente |
CN2010800211553A CN102438756B (zh) | 2009-05-15 | 2010-05-14 | 持续运转的离心机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009021588.3 | 2009-05-15 | ||
DE102009021588A DE102009021588B4 (de) | 2009-05-15 | 2009-05-15 | Kontinuierlich arbeitende Zentrifuge |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010130827A1 true WO2010130827A1 (de) | 2010-11-18 |
Family
ID=42664740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/056654 WO2010130827A1 (de) | 2009-05-15 | 2010-05-14 | Kontinuierlich arbeitende zentrifuge |
Country Status (6)
Country | Link |
---|---|
US (1) | US9180467B2 (de) |
EP (1) | EP2429711B1 (de) |
CN (1) | CN102438756B (de) |
BR (1) | BRPI1010977A2 (de) |
DE (1) | DE102009021588B4 (de) |
WO (1) | WO2010130827A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8647505B2 (en) | 2011-06-24 | 2014-02-11 | The Western States Machine Company | Screen clamp with integrated center feed |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011119265B4 (de) * | 2011-11-24 | 2018-01-04 | Bma Braunschweigische Maschinenbauanstalt Ag | Diskontinuierliche Zentrifuge mit Ausräumer zum Ausräumen eines Produktes |
US10513746B2 (en) | 2016-10-18 | 2019-12-24 | Western States Machine Company | Continuous centrifuge systems with multiple-stage mixing |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0487780A1 (de) * | 1990-11-30 | 1992-06-03 | Braunschweigische Maschinenbauanstalt AG | Kontinuierlich arbeitende Zentrifuge zum Abschleudern von Zuckerfüllmassen |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE123174C (de) * | ||||
US2353983A (en) * | 1937-03-10 | 1944-07-18 | Banning Hellmuth | Purification of pulp |
DE2207663C3 (de) * | 1972-02-18 | 1984-04-26 | Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig | Kontinuierlich arbeitende Zuckerzentrifuge |
DE2436044C3 (de) * | 1974-07-26 | 1986-07-31 | Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig | Kontinuierlich arbeitende Siebzentrifuge, insbesondere Zuckerzentrifuge |
DE2631178C3 (de) * | 1976-07-10 | 1981-05-27 | Maschinenfabrik Buckau R. Wolf Ag, 4048 Grevenbroich | Kontinuierlich arbeitende Siebzentrifuge, insbesondere Zuckerzentrifuge |
US4052304A (en) * | 1976-07-21 | 1977-10-04 | Cf&I Engineers, Inc. | Preheating device for centrifugal |
DE3129392C1 (de) * | 1981-07-25 | 1983-03-31 | Braunschweigische Maschinenbauanstalt AG, 3300 Braunschweig | Kontinuierlich arbeitende Zuckerzentrifuge mit federnden Zuckerauffangblechen |
DE3405752C2 (de) * | 1984-02-17 | 1986-02-13 | Hein, Lehmann AG, 4000 Düsseldorf | Kontinuierlich arbeitende Zentrifuge |
DE3828204A1 (de) * | 1988-08-19 | 1990-02-22 | Braunschweigische Masch Bau | Kontinuierlich arbeitende zentrifuge zum einmaischen und abschleudern von zuckerfuellmassen |
-
2009
- 2009-05-15 DE DE102009021588A patent/DE102009021588B4/de not_active Expired - Fee Related
-
2010
- 2010-05-14 BR BRPI1010977A patent/BRPI1010977A2/pt not_active Application Discontinuation
- 2010-05-14 US US13/319,524 patent/US9180467B2/en active Active
- 2010-05-14 WO PCT/EP2010/056654 patent/WO2010130827A1/de active Application Filing
- 2010-05-14 EP EP10721469.4A patent/EP2429711B1/de active Active
- 2010-05-14 CN CN2010800211553A patent/CN102438756B/zh active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0487780A1 (de) * | 1990-11-30 | 1992-06-03 | Braunschweigische Maschinenbauanstalt AG | Kontinuierlich arbeitende Zentrifuge zum Abschleudern von Zuckerfüllmassen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8647505B2 (en) | 2011-06-24 | 2014-02-11 | The Western States Machine Company | Screen clamp with integrated center feed |
Also Published As
Publication number | Publication date |
---|---|
EP2429711B1 (de) | 2015-09-30 |
DE102009021588B4 (de) | 2013-12-12 |
CN102438756A (zh) | 2012-05-02 |
CN102438756B (zh) | 2013-08-14 |
EP2429711A1 (de) | 2012-03-21 |
US9180467B2 (en) | 2015-11-10 |
US20120142513A1 (en) | 2012-06-07 |
BRPI1010977A2 (pt) | 2016-03-15 |
DE102009021588A1 (de) | 2010-11-25 |
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