EP3442721B1 - Tamiseur - Google Patents

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Publication number
EP3442721B1
EP3442721B1 EP17719819.9A EP17719819A EP3442721B1 EP 3442721 B1 EP3442721 B1 EP 3442721B1 EP 17719819 A EP17719819 A EP 17719819A EP 3442721 B1 EP3442721 B1 EP 3442721B1
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EP
European Patent Office
Prior art keywords
dispersing
separator
air
cone
plate
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.)
Active
Application number
EP17719819.9A
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German (de)
English (en)
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EP3442721A2 (fr
Inventor
Joachim Galk
Thomas Mingers
Marc Giersemehl
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Neuman & Esser Process Technology GmbH
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Neuman & Esser Process Technology GmbH
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Priority to EP18203588.1A priority Critical patent/EP3461565A1/fr
Publication of EP3442721A2 publication Critical patent/EP3442721A2/fr
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Publication of EP3442721B1 publication Critical patent/EP3442721B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B07B4/025—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall the material being slingered or fled out horizontally before falling, e.g. by dispersing elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements

Definitions

  • the invention relates to a classifier according to the features of the preamble of claim 1.
  • the DE 38 23 380 C2 discloses such a sifter with a scattering plate on which the material to be treated is applied centrally. Impact elements on the upper side and radially outwardly projecting impact elements are fastened rigidly or freely oscillating below the outer edge over the circumference of the spreading disc.
  • the spreading disc is driven independently of the bar basket.
  • a feed cone is arranged in the center of the spreading disc, which has the task of deflecting the falling feed material onto the spreading disc. Due to the centrifugal forces, the feed material slides to the edge of the spreading disc, with the feed material being imparted with a movement component in the direction of rotation of the spreading disc at the same time. At the edge of the spreading disc, the feed material hits the beating elements arranged on the spreading disc, so that the aggregates are broken up at this point.
  • the particles of the feed material hit further impact elements of the scattering disc that protrude outwards.
  • Percussion elements can also be attached to the circumference of the rod cage.
  • baffles which are arranged on the inside of the classifier housing above the classifying zone between the rod cage and the vane ring, the material is to be guided in concentrated form into the striking circle of the striking elements of the rod cage. Despite various measures, the deagglomeration is not satisfactory.
  • the DE 43 02 857 A1 discloses a cleaning device for cleaning a mixture of grains, which has a splitter to which both a hood and a truncated cone are attached, which in turn carries a cone. Impact elements are not provided.
  • the WO 2014/124899 A1 describes a sifter which has built-in components in the sifting zone between the air guidance system and the rotor basket, which are intended to cause the agglomerated feed material particles to be at least partially deagglomerated. This should make a more efficient sighting possible.
  • the internals are arranged in such a way that they extend parallel to the axis of rotation of the rotor basket or form an angle with the rotor axis.
  • the internals which can also be formed by the end regions of the guide vanes of the air-guiding system, form bottlenecks or constrictions in the circumferential direction of the viewing zone.
  • the DE 199 61 837 A1 there are also internals in the form of deflector flaps that protrude into the viewing zone and extend parallel to the axis of the dynamic rotor part.
  • the EP 1 529 568 B1 discloses a cyclone separator in which the flow cross section in the flow direction of the product is constricted at at least one point in front of the separation area. Screens, such as conical rings, are used for this purpose, which can be installed at several points in the viewing zone.
  • the CH 363879 A discloses a centrifugal air classifier that does not have a classifier wheel.
  • This sifter has a bladed disc. Over the material to be sifted is fed to this disc via a conical material distributor, where the material is given a tangential velocity component which corresponds to the tangential velocity component of the air flow prevailing in the sifter.
  • the US4869786A discloses a multi-stage sifter with at least two centrifugal baskets.
  • the feed cone is arranged on the housing at a distance from the dispersing plate.
  • the particles of the feed material and in particular the agglomerates of the feed material only have a vertical and a radial movement component.
  • the agglomerates slide off the feed cone, the agglomerates are caught and broken up by the dispersing vanes of the dispersing disc rotating under the feed cone.
  • the dispersing blades are open the top of the dispersing plate distributed over the circumference of the dispersing plate.
  • dispersing blades are preferably provided.
  • the impact effect of the dispersing shovels is significantly greater than in the prior art because the agglomerates do not yet have a movement component in the direction of rotation of the dispersing disk when they hit the dispersing shovels.
  • the selectivity of the classifier is significantly improved because not only is a significantly larger quantity of the agglomerates deagglomerated, but the agglomerates are also almost completely broken down into their original individual particles.
  • the feed cone preferably has an included angle ⁇ of 45° ⁇ 90°. This is a pointed cone, which has the advantage that the slope of the cone surface is large and the particles of the feed material are only slightly slowed down in their vertical movement before they hit the dispersing blades.
  • the feed cone preferably has a radius R 1 at its cone edge, for which 0.5 ⁇ R 2 ⁇ R 1 ⁇ R 2 applies, where R 2 denotes the radius of the dispersing disk. If this relationship is maintained, it is ensured that the edge of the cone of the feed cone extends as far as possible to the edge of the dispersing disc and thus the particles of the feed material hit an area of the dispersing disc and the dispersing blades that has a correspondingly high web speed v.
  • the momentum p m ⁇ v acting on the agglomerates is greater, the greater the web speed v. It is therefore advantageous to choose the radius R 2 of the dispersing disk as large as possible, because then the radius R 1 of the edge of the cone can also be chosen to be large within the range of 0.5 ⁇ R 2 to R 2 .
  • the web speed v at the radially outer end of the dispersing blades is preferably in the range from 40 m/s to 150 m/s, in particular in the range from 80 m/s to 150 m/s.
  • R 1 must not be chosen too large so that the agglomerates falling from the feed cone do not overshoot the edge of the dispersing disc due to their radial speed. It is therefore preferred to choose R 1 ⁇ 0.9 ⁇ R 2 , in particular R 1 ⁇ 0.8 ⁇ R 2 .
  • the radius R 3 of the inner circumference of the dispersing blades is preferably R 3 ⁇ R 1 .
  • the inner circumference of the dispersing blades refers to the circle on which the inner surfaces of the dispersing blades pointing radially to the center of the dispersing plate lie.
  • the distance A 1 between the edge of the cone of the feed cone and the dispersing blades is preferably 0 ⁇ A 1 ⁇ 30 mm and is particularly preferably 5 mm to 30 mm, in particular 5 mm to 25 mm.
  • the advantage of a small distance A 1 is that the agglomerates of the feed material are caught and broken up by the dispersing blades immediately after leaving the feed cone.
  • Each dispersing blade preferably has a dispersing surface which is arranged perpendicular to the direction of rotation of the dispersing plate. This has the advantage that maximum force is applied to the impacting agglomerates of the feed material.
  • the dispersing blades are preferably plates which rise up on the upper side of the dispersing plate and extend in the radial direction.
  • a baffle ring is preferably provided on the housing, which has baffle elements distributed over the circumference and protruding in the direction of the dispersing plate.
  • the impact ring is preferably arranged in a stationary manner on the housing. Preferably 24 or more than 24 impact elements are provided.
  • the particles of the feed material which are thrown outwards by the impact ring due to the centrifugal forces, not only hit the impact ring, but also the impact elements due to their component of movement in the direction of rotation of the turntable.
  • the advantage of the impact ring with the impact elements is that agglomerates that may not yet have been completely broken up into the individual particles by the dispersing blades of the dispersing disk can be effectively broken up in this second stage of dispersing. This further improves deagglomeration.
  • the distance A 2 between the impact elements and the dispersing plate is preferably 0 ⁇ A 2 ⁇ 30 mm, in particular 10 mm ⁇ A 2 ⁇ 30 mm.
  • the baffle elements are designed and arranged in such a way that they are at least opposite the dispersing blades. This means that the vertical extension of the impact elements is so great that it corresponds at least to the height of the dispersing blades. This ensures that as many as possible Particles of the feed material leaving the dispersing disc are caught by the impact elements.
  • the sifter has a sifter wheel having sifter wheel vanes and an air guiding system having guide vanes for the supply of sifting air, with an annular sifting chamber being arranged between the sifter wheel and the air guiding system.
  • Such classifiers are also referred to as deflector wheel classifiers.
  • the guide vanes are preferably guide plates which protrude into the sifting chamber and extend in the vertical direction.
  • the dispersing plate is attached to the classifier wheel.
  • the advantage is that the dispersing disc does not require its own drive and is driven by the classifier wheel.
  • the dispersing disc thus has the same angular velocity as the classifier wheel.
  • the rotating classifier wheel generates a circular flow in the classifying chamber, with the feed material being carried radially outwards due to the centrifugal force.
  • the air introduced by the air duct system imparts a movement component to the particles of the feed material in the direction of the classifier wheel.
  • the feed material in particular also the deagglomerated feed material, tends to form strands in front of and in the sifting chamber, which impair the classification.
  • the guide plates protruding into the sifting chamber loosen the strands in a targeted manner, so that improved separation, in particular of the very finest particles, is possible without impairing the rest of the separation.
  • the baffles projecting into the sifting chamber not only separate the strands, but also give the particles of the feed material an additional movement component in the direction of the sifter wheel.
  • the air guidance system preferably has air windows, with a baffle plate being arranged on at least one edge of the air windows.
  • the air-guiding system preferably has an annular wall in which the air windows are arranged.
  • the air flowing in through the air windows is deflected by the baffles, which influences the flow into the viewing room.
  • the guide plates thus fulfill two tasks. Both the particles in the feed material and the inflowing sifting air are influenced in the desired way.
  • the angle of attack ⁇ of the vanes allows both flows to be adjusted in a targeted manner.
  • the angle of attack ⁇ is between the baffles in the direction of flow of the particle-air mixture in the screening room and the inner radius R L of the air duct system stretched.
  • the angles ⁇ are preferably the same for all guide plates.
  • the guide plates are preferably arranged on the opposite edges of the air windows.
  • Each air window thus has two baffles, which means that the incoming air flow can be introduced in a more targeted manner.
  • the guide plates are preferably arranged between two air windows in each case in such a way that their ends converge.
  • the guide plates preferably have different angles of attack ⁇ .
  • the ends of the baffles are preferably spaced, e.g. H. the ends of the baffles preferably do not touch.
  • the two guide plates that are arranged on each air window are preferably aligned parallel to one another. These baffle pairs form an air duct which preferably has a constant width.
  • the guide plates with the radius R L of the air guidance system preferably have an angle of attack ⁇ which is in the range from 30° to 60°, particularly preferably in the range from 40° to 50°.
  • the baffles are preferably rectangular planar baffles.
  • the guide plates are curved in the direction of the classifier wheel.
  • the angle of attack ⁇ of the curved guide plate is spanned between the tangent T in the middle of the outer surface of the guide plate and the inner radius R L of the air guidance system in the flow direction of the particle air flow.
  • the flow direction of the particle airflow is defined by the direction of rotation of the classifier wheel.
  • the curved design of the guide plates has the advantage that the particle air flow is directed even more effectively onto the classifier wheel.
  • the baffles have a single radius of curvature R 4 .
  • the guide plates are curved in such a way that the radius of curvature R 4 decreases in the direction of the classifier wheel.
  • the radius of curvature is preferably 5 mm ⁇ R 4 ⁇ 2000 mm.
  • the air conduction system preferably has at least one conical ring with a particle guide element which projects into the sifting chamber and has a first conical surface.
  • the particle air flow does not only have a horizontal movement component, but also a vertical movement component due to gravity.
  • the flow cross-section of the sifting chamber in the vertical direction of movement is constricted by the cone ring, as a result of which the particle air flow is deflected by the cone-shaped surface of the particle guide element in the direction of the sifter wheel. This measure also contributes to an improvement in the selectivity of the classifier.
  • the cone-shaped surface is preferably arranged on the upper side of the particle guide element and forms an angle ⁇ with a vertical axis Lv of 10° ⁇ 90°, particularly preferably 20° ⁇ 80°.
  • the ratio V of the diameters D L /D S is 1.05 ⁇ V ⁇ 1.1.
  • 0.005 ⁇ A 4 ⁇ A 3 ⁇ 0.5 ⁇ A 4 applies to the distance A 3 between the inner edge of the particle guide elements and/or the ends of the guide plates and the inner circumference of the classifier wheel.
  • the air-guiding system preferably has at least one circumferential horizontal air slot.
  • This horizontal air slot can extend partially or over the entire circumference of the air duct system. This results in higher radial velocities of the classifier air of up to 30 m/s, with which the feed material is guided to the classifier wheel.
  • a classifier 1 is shown in vertical section.
  • the sifter 1 has a housing 2 which has a filling tube 6 and is divided into an upper housing part 3 and a lower housing part 5 .
  • the upper housing part 3 which is essentially cylindrical, there is a classifier wheel 60 with classifier wheel blades 62 and an air duct system 70 with three guide blade rings 72.
  • the classifying chamber 18 is located between the classifier wheel 60 and the air duct system 70.
  • On the classifier wheel 60 is a dispersing plate 30 attached, which is thereby driven by the classifier wheel 60.
  • the dispersing plate 30 has on its upper side 31 (see also figure 2 ) in the edge region dispersing blades 40, which consist of essentially rectangular metal plates, which rise from the top 31 of the dispersing plate 30 and extend up to the edge 33 of the dispersing plate 30.
  • a feed cone 20 is fixed in place on the housing 2 above the dispersing plate.
  • the upper housing part 3 has a classifier cover 4 in which the filling pipe 6 is arranged with the filling opening 7 for the feed material.
  • the feed material is filled into the sifter 1 through the feed pipe 6 and meets the feed cone 20 there.
  • the drive shaft 13 for the classifier wheel 60 is arranged in the lower housing part 5 and is driven by a drive device 12 at the lower end.
  • the lower housing part 5 also has an outlet pipe with the outlet opening 9 for discharging the fine material.
  • a suction fan 11 and the outlet 10 for the coarse material are arranged at the lower end of the conical lower housing part 5 .
  • the figure 2 shows a detailed section through the upper housing part 3.
  • the cone tip 26 of the feed cone 20 protrudes into the filling pipe 6 and is fastened to the filling pipe 6 there by means of a fastening element 22 .
  • the dispersing plate 30 is surrounded by an impact ring 50 which has impact elements 54 on its inner surface 52 which protrude from the inner surface 52 in the direction of the dispersing plate 30 .
  • the baffle elements 54 are distributed over the inner surface 52 of the baffle ring 50 and extend in the vertical direction at least over the entire height of the dispersing blades 40.
  • a conical wall 58 connects to the baffle ring 50 at the top.
  • the classifier wheel 60 arranged under the dispersing plate 30 has a multiplicity of vertically aligned classifier wheel vanes 62 and is surrounded by an air duct system 70 with a total of three guide vane rings 72 .
  • FIG 3 is the top view of the in figure 1 shown sifter 1 shown, which has two tangentially arranged on the housing part 3 sifting air supplies 8a, b.
  • a total of twenty-four impact elements 54 are arranged on impact ring 50 .
  • the impact elements 54 are arranged at a distance from the dispersing plate 30 .
  • the dispersing plate 30 carries six dispersing blades 40 on its upper side 31, some of which extend below the feed cone 20.
  • the inner circumference of the dispersing blades 40 is identified by the dashed circular line 44 on which the inner surfaces 41 of the dispersing blades 40 lie.
  • the corresponding radius R 3 of the inner circumference 44 of the dispersing blades 40 is also shown, as is the radius R 1 of the cone edge 24 of the feed cone 20.
  • the figures 4 and 5 show enlarged sectional views of the upper part of the in figure 2 shown sifter 1.
  • the task cone 20 has an opening angle ⁇ of about 85 °.
  • the feed cone 20 extends into the area of the dispersing shovels 40 so that the feed material 14 introduced from above through the filling pipe 6 is fed directly to the dispersing shovels 40 .
  • the agglomerates in the feed material 14 are marked with the reference number 15 .
  • the agglomerates 15 and the other particles of the feed material 14 are first caught by the dispersing surface 46 of the dispersing blades 40 before they hit the top 31 of the dispersing plate 30 .
  • the distance A 1 between the cone edge 24 of the feed cone 20 and the top surface 43 of the dispersing blade 40 is shown. Furthermore, the distance A 2 between the edge surface 34 of the dispersing plate 30 and the impact element 54 is shown. The outer surface 42 of the dispersing blade 40 is set back in relation to the edge surface 34 of the dispersing plate 30 .
  • the impact element 54 extends below the plane in which the underside 32 of the dispersing plate 30 lies.
  • the length Ls of the dispersing vanes 40 is preferably in the range of 0.02 ⁇ R 2 ⁇ Ls ⁇ 0.2 ⁇ R 2 .
  • the height Hs is preferably in the range of 0.01 ⁇ R 2 ⁇ Hs ⁇ 0.1 ⁇ R 2 .
  • the height HP of the impact elements 54 is preferably 0.03 ⁇ R 2 ⁇ H P ⁇ 0.5 ⁇ R 2 .
  • the width B P of the impact element 54 is slightly less than the height Hs of the dispersing blade 40.
  • an agglomerate particle 15 is shown, which slides down the cone surface and is caught by the dispersing surface 46 and broken down into its individual particles.
  • the resulting deagglomerated particles 16 strike the impact surface 56 of the impact element 54 and are further deagglomerated there.
  • FIG 6 the top view of a classifier wheel 60 with classifier wheel vanes 62 and an associated air duct system 70 with guide vanes 73 is shown.
  • the vane ring 72 of the air duct system 70 has an inside diameter D L .
  • the outside diameter of classifier wheel 60 is denoted by D S . This results in a width A 4 of the annular viewing space 18.
  • FIG 7 Another embodiment of the air handling system 70 is shown.
  • the air conduction system 70 has two rings 79 between which an annular wall 71 with air windows 74 is arranged.
  • the air windows 74 are arranged uniformly over the entire circumference of the ring wall 71 .
  • there are rectangular air windows 74 which each have guide vanes 73 in the form of guide plates 76 on the left-hand edge 75 .
  • These baffles 76 are pivotable about an axis L SA so that the angle of attack ⁇ , which is in the figure 9 is drawn, can be specifically adjusted.
  • the direction of flow of the particle air flow is indicated in the sifting chamber 18 by the arrow P 2 , which is generated by the rotation of the sifter wheel 60 in the direction of the arrow P 1 .
  • the angle ⁇ is spanned between the inner radius R L of the air guidance system 70 and the baffle plate 76 .
  • FIG 8a is the air handling system 70 of figure 7 shown combined with a classifier wheel 60 .
  • P 1 indicates the direction of rotation of classifier wheel 60 .
  • P 2 denotes the flow direction of the particle air flow.
  • FIG 8b Another embodiment is shown in which the baffles 76 are curved.
  • the baffles 76 have a uniform radius of curvature R 4 and are curved in the direction of the classifier wheel 60 .
  • the angle of attack ⁇ is characterized by the tangent T through the center of the guide plate 76 and the inner radius of the air-guiding system 70 .
  • FIG. 8c Another embodiment is shown in which the baffles 76 do not have a uniform radius of curvature, but instead have a radius of curvature that decreases from the outside to the inside.
  • the radius of curvature R 6 at the end of the curved vane 76 is less than the radius of curvature R 5 .
  • FIG 10 A further embodiment of the air guidance system 70 is shown, in which guide plates 77a, 77b are arranged opposite one another on both edges 75 of the air windows 74.
  • the inflow of air is indicated by the drawn arrows. While the baffles 77a are short, the baffles 77b are longer.
  • the adjacent guide plates 77a and 77b of two windows 74 are each aligned in parallel, so that an air duct with a constant width is created.
  • the ends 77c of the guide plates 77a, 77b do not touch and are spaced apart from one another.
  • FIG 11 Another embodiment of the air guidance system 70 is shown, in which three guide vane rings 72 are arranged one above the other, with a cone ring 80 being arranged between the rings 79 of adjacent guide vane rings 72 .
  • a horizontal ring-shaped air slot 78 is provided in this air-guiding system 70 through which sifting air is introduced into the sifting chamber 18 .
  • a cone ring 80 is shown in section.
  • the cone ring 80 has a particle guiding element 82 with a first cone-shaped surface 84 on the upper side and a second cone-shaped surface 86 on the underside.
  • the angle of inclination of surface 84 to a vertical axis Lv is denoted by ⁇ .
  • the air guidance system 70 is shown together with a classifier wheel 60 so that it can be seen that the particle guiding elements 82 protrude into the classifying chamber 18 .
  • the distance A 3 from the inner edge 88 of the particle guide elements 84 to the classifier wheel 60 is marked A 3 .
  • the diameters D L and Ds as well as the distance A 4 between the air duct system 70 and the classifier wheel 60 are shown.
  • Tests were carried out using a mineral powder as the feedstock.
  • This powder was classified in a conventional classifier without a feed cone according to the invention and without a dispersing disk according to the invention.
  • the same powder was in a classifier according to the invention with the task cone according to the invention, dispersing plate with dispersing blades and an impact ring Figures 1 to 5 and an air duct system according to figure 6 classified.
  • the cumulative distribution curve II obtained with the classifier according to the invention is also in FIG figure 14 shown.
  • the yield for this particle range was 7.3% with the prior art (curve I) and 11.3% with the classifier according to the invention (curve II). This is a 54.8% increase in yield.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Centrifugal Separators (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Cell Separators (AREA)
  • Cyclones (AREA)

Claims (13)

  1. Séparateur (1) avec
    - un boîtier (2),
    - un cône d'envoi (20),
    - un plateau de dispersion (30) rotatif sur la face supérieure (31) duquel sont disposées des pales de dispersion (40) réparties sur la circonférence du plateau de dispersion (30),
    le séparateur (1) comprenant une roue de séparation (60) comportant des pales de roue de séparation (62) et un système de guidage d'air (70) comportant des aubes de guidage (73) pour l'acheminement d'air de séparation, un espace de séparation (18) annulaire étant disposé entre la roue de séparation (60) et le système de guidage d'air (70),
    caractérisé
    en ce que le cône d'envoi (20) est disposé au boîtier (2) à distance du plateau de dispersion (30) et
    en ce que le plateau de dispersion (30) est fixé à la roue de séparation (60).
  2. Séparateur selon la revendication 1, caractérisé en ce que le cône d'envoi (20) a un angle d'ouverture β avec 45° ≤ β < 90°.
  3. Séparateur selon la revendication 1 ou 2, caractérisé en ce que, à son bord de cône (24), le cône d'envoi a un rayon R1 avec 0,5 × R2 < R1 < R2, R2 désignant le rayon du plateau de dispersion (30).
  4. Séparateur selon l'une des revendications 1 à 3, caractérisé en ce que le rayon R3 du pourtour intérieur (44) des pales de dispersion (40) est R3 ≤ R1.
  5. Séparateur selon l'une des revendications 1 à 4, caractérisé en ce que la distance A1 entre le bord de cône (24) du cône d'envoi (20) et les pales de dispersion (40) du plateau de dispersion (30) est 0 < A1 ≤ 30 mm.
  6. Séparateur selon l'une des revendications 1 à 5, caractérisé en ce que chaque pale de dispersion (40) comprend une surface de dispersion (46) qui est disposée perpendiculairement à la direction de rotation du plateau de dispersion (30).
  7. Séparateur selon l'une des revendications 1 à 6, caractérisé en ce que les pales de dispersion (40) sont des plaques dressées sur la face supérieure (31) du plateau de dispersion (30) et s'étendant dans des directions radiales.
  8. Séparateur selon l'une des revendications 1 à 7, caractérisé en ce qu'au boîtier (2), un anneau de percussion (50) est prévu qui comprend des éléments de percussion (54) répartis sur le pourtour intérieur et en saillie vers le plateau de dispersion (30).
  9. Séparateur selon la revendication 8, caractérisé en ce que la distance A2 entre les éléments de percussion (54) et le plateau de dispersion (30) est 0 < A2 ≤ 30 mm.
  10. Séparateur selon l'une des revendications 8 ou 9, caractérisé en ce que les éléments de percussion (54) sont configurés et disposés de façon qu'ils soient en regard au moins des pales de dispersion (40).
  11. Séparateur selon l'une des revendications 1 à 10, caractérisé en ce que les aubes de guidage (73) sont des tôles de guidage (76, 77a, 77b) s'étendant jusque dans l'espace de séparation (18) et en direction verticale.
  12. Séparateur selon l'une des revendications 1 à 11, caractérisé en ce que le système de guidage d'air (70) comprend des ouvertures d'air (74) et en ce qu'une tôle de guidage (76) est disposée sur au moins un bord (75) des ouvertures d'air (74).
  13. Séparateur selon la revendication 12, caractérisé en ce que les tôles de guidage d'air (77a, 77b) sont disposées sur des bords opposés (75) des ouvertures d'air (74).
EP17719819.9A 2016-04-11 2017-04-07 Tamiseur Active EP3442721B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18203588.1A EP3461565A1 (fr) 2016-04-11 2017-04-07 Séparateur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016106588.9A DE102016106588B4 (de) 2016-04-11 2016-04-11 Sichter
PCT/EP2017/058430 WO2017178379A2 (fr) 2016-04-11 2017-04-07 Séparateur

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP18203588.1A Division-Into EP3461565A1 (fr) 2016-04-11 2017-04-07 Séparateur
EP18203588.1A Division EP3461565A1 (fr) 2016-04-11 2017-04-07 Séparateur

Publications (2)

Publication Number Publication Date
EP3442721A2 EP3442721A2 (fr) 2019-02-20
EP3442721B1 true EP3442721B1 (fr) 2023-05-24

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US11826786B2 (en) * 2019-11-22 2023-11-28 Gebr. Pfeiffer Se Classifier wheel with vane surface elements
CN112794442B (zh) * 2021-01-22 2023-04-07 重庆市巴南排水有限责任公司 一种基于生化处理工艺的碳源投加装置及投加方法
DE102021001238B4 (de) 2021-03-09 2023-01-26 Hosokawa Alpine Aktiengesellschaft Zentrifugalkraft-Windsichter und Verfahren zur Sichtung von staubförmigen Gütern

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CN113042368A (zh) 2021-06-29
US20190168263A1 (en) 2019-06-06
WO2017178379A3 (fr) 2017-12-07
BR112018071011A2 (pt) 2019-02-12
CN108883437B (zh) 2022-07-15
ES2949867T3 (es) 2023-10-03
DE102016106588B4 (de) 2023-12-14
WO2017178379A2 (fr) 2017-10-19
EP3442721A2 (fr) 2019-02-20
DE102016106588A1 (de) 2017-10-12
US11117167B2 (en) 2021-09-14
CN108883437A (zh) 2018-11-23
EP3461565A1 (fr) 2019-04-03

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