[go: up one dir, main page]

EP3849714B1 - Roue de triage à éléments de voile plats et procédé de tamisage avec une telle roue - Google Patents

Roue de triage à éléments de voile plats et procédé de tamisage avec une telle roue Download PDF

Info

Publication number
EP3849714B1
EP3849714B1 EP20804601.1A EP20804601A EP3849714B1 EP 3849714 B1 EP3849714 B1 EP 3849714B1 EP 20804601 A EP20804601 A EP 20804601A EP 3849714 B1 EP3849714 B1 EP 3849714B1
Authority
EP
European Patent Office
Prior art keywords
classifier wheel
wheel
surface elements
classifier
sifting
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
EP20804601.1A
Other languages
German (de)
English (en)
Other versions
EP3849714A1 (fr
EP3849714C0 (fr
Inventor
Michael Betz
Florian GEHRKE
Burkhard Kraft
Werner Hollstein
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.)
Gebr Pfeiffer SE
Original Assignee
Gebr Pfeiffer SE
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 Gebr Pfeiffer SE filed Critical Gebr Pfeiffer SE
Publication of EP3849714A1 publication Critical patent/EP3849714A1/fr
Application granted granted Critical
Publication of EP3849714B1 publication Critical patent/EP3849714B1/fr
Publication of EP3849714C0 publication Critical patent/EP3849714C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Definitions

  • the present invention relates to a sifting wheel for a sifting device for sifting ground comminution products, in particular particulate bulk material, the sifting wheel comprising sifting wheel lamellae which are arranged in the radially outer area of the sifting wheel.
  • the WO 2017/067913 A1 discloses a sifting device with a rotor basket which can be rotated about a substantially vertically aligned axis of rotation and whose lateral surface is formed by rotor blades.
  • the rotor blades are followed by a plurality of guide elements, which extend in the radial direction, in particular with a tangential component, inward in the direction of the rotor axis into the rotor basket.
  • the guide elements extend as far as the axis of rotation of the rotor basket, but not in the radially inner area near the opening of the fines discharge.
  • the EP 0 645 196 A1 discloses a classifying wheel according to the preamble of claim 1 and a method according to the preamble of claim 11.
  • the EP 0 983 802 A2 discloses a classifying wheel with a circular disc carrying a classifying wheel hub and an annular cover disc.
  • the object of the present invention is to provide an advantageous arrangement of sail surface elements in a classifying wheel, in particular with regard to separation efficiency and energy efficiency.
  • a sifting wheel for a sifting device for sifting ground comminution products in particular particulate bulk material, which comprises sifting wheel lamellae, which are arranged in the radially outer area of the sifting wheel, and sail surface elements which are radially spaced from the sifting wheel lamellae in the are arranged radially inner region of the classifying wheel.
  • an air stream carrying the ground comminution products of different particle sizes flows from radially outside to radially inside into the rotating sifting wheel and through the sifting wheel lamellae, in order to then be drawn off in the axial direction of the sifting wheel.
  • the sail surface elements are designed to break up an otherwise generated potential vortex in the classifier wheel and thereby reduce the pressure loss in the classifying air flow. Since, in particular, a different number of canopy elements and classifying wheel lamellae is provided, the arrangement of canopy surface elements relative to the classifying wheel lamellae is not always uniform. This can lead to different flow resistances for the flow of the classifying air through the classifying wheel lamellae in the circumferential direction of the classifying wheel. Due to the radial spacing of the sail surface elements in the radial direction of the classifying wheel from the classifying wheel lamellae, a substantially rotationally symmetrical flow profile can be achieved in the classifying wheel lamellae.
  • a gap can be created between the canopy elements and the classifying wheel elements are present, which ensures that the influence of the sail surface elements on the flow profile is kept low by the classifying wheel lamellae.
  • a substantially rotationally symmetrical flow profile can be generated in the classifying space radially outside the classifying wheel lamellae despite the sail surface elements inside the classifying wheel, as a result of which good separation and thus in particular very high levels of selectivity can be achieved.
  • a high selectivity ensures that ground comminution products above a certain grain size are essentially separated in the sifting chamber and can thus be fed into a new grinding process.
  • the particulate bulk material is ground rock material, for example limestone, gypsum, coal or claystone, mineral bulk material, for example cement or cement material, or recycled bulk material, for example recycled gypsum concrete panel material, blast furnace slag, flue gas desulfurization gypsum or fly ash.
  • ground rock material for example limestone, gypsum, coal or claystone
  • mineral bulk material for example cement or cement material
  • recycled bulk material for example recycled gypsum concrete panel material, blast furnace slag, flue gas desulfurization gypsum or fly ash.
  • the sifting wheel can be used for a bulk material mill, in particular for a rock mill, advantageously in a vertical roller mill.
  • the grinding is effected in particular by rotating a grinding table relative to grinding rollers about a central axis of the grinding table, so that the grinding rollers roll on a grinding track of the grinding table about a roller axis of rotation in order to grind the particulate bulk material and reduce its grain sizes.
  • other bulk material mills can also be used in combination with the classifying wheel, in particular bulk material mills that initially produce particle size distributions that do not yet correspond to the desired particle size distribution of the end product.
  • a sifting device with the sifting wheel according to the invention is then used in order to separate particles with too large grain sizes in the comminution product and to feed them back into the grinding process.
  • the angle of inclination of the canopy surface elements is constant relative to the axial direction of the classifying wheel in the area spanned by the axial direction and circumferential direction of the classifying wheel along the entire axial extent of the canopy surface elements.
  • a radial turbulent flow generated by the rotation of the classifying wheel can thus be broken up more efficiently.
  • the sail surface elements extend straight in the axial direction of the classifying wheel.
  • the canopy surface elements extend in a surface spanned by the axial direction and radial direction of the classifying wheel.
  • the radial distance between the radially inner end of the sifting wheel lamellae and the radially outer end of the sail surface elements is constant along the entire axial extent of the sifting wheel.
  • the radial distance between the radially inner end of the classifying wheel lamellae and the radially outer end of the sail surface elements is at least 3% of the diameter of the classifying wheel, advantageously at least 5%.
  • the radial distance is at most 30%, advantageously at most 20%, of the diameter of the classifying wheel.
  • the sail surface elements extend straight in the radial direction of the classifying wheel.
  • the sail surface elements are at least partially curved and/or inclined with respect to the radial direction of the classifying wheel.
  • the radially outer edge of the canopy element is set back in relation to the intended direction of rotation of the classifying wheel, ie in particular in the circumferential direction counter to the direction of rotation.
  • the curved and/or inclined design of the canopy elements enables the flow behavior to be optimized in order to reduce the flow resistance in the direction of the discharge opening of the classifier wheel. In particular, potential vortices can be further reduced as a result.
  • the classifying wheel lamellae are at least partially curved and/or inclined relative to the radial direction of the classifying wheel, with the inclination of the canopy surface elements relative to the radial direction at least at their radially outer edge being greater than the inclination of the classifying wheel lamellae relative to the radial direction at least on their radially inner edge edge.
  • the radially outer edge of the sail surface elements is at least partially curved and/or inclined with respect to the axial direction of the classifying wheel. In this way, the flow in the direction of the discharge opening can be promoted or reduced in the axial direction in order to provide the desired flow condition in the sifting chamber and inside the sifting wheel.
  • the canopy elements are in particular formed from a rigid, flat material, for example sheet steel.
  • the sail surface elements can also have a varying thickness along their extent, for example in order to optimize the flow conditions thereon.
  • the sail surface elements can be arranged at least partially at their radially inner end on a central shaft in the classifying wheel.
  • the classifying wheel can be mounted on the central shaft.
  • the central shaft can be solid or hollow. The provision of the central shaft and the direct connection of the canopy elements to it has the effect, in particular, that no vortices can arise in the center of the classifying wheel.
  • the sail surface elements can be guided up to the radial center of the classifying wheel. This allows the size of the sail surface elements to be maximized.
  • a distance can be provided between a centrally arranged shaft and the sail surface elements. A flow between the areas separated by the sail surface elements in the radially inner area of the classifying wheel can thus be made possible.
  • the canopy elements are distributed uniformly in the circumferential direction in the classifying wheel.
  • uniform flow conditions can be achieved in the sifter wheel, which in turn promotes uniform flow conditions in the sifting chamber.
  • At least four canopy elements are provided. In some embodiments, more than 6, 8, 10, 12, 14 or 16 canopy elements can also be provided. The larger the diameter of the classifying wheel, the more canopy elements make sense.
  • the sail surface elements extend at least partially over the entire height of the interior of the classifying wheel. As a result, the formation of vortices can be prevented, particularly in the area of the axial discharge opening.
  • the distance between the radially inner end of the classifying wheel lamellae and the radially outer end of the sail surface elements is adjustable. This can be made possible in particular by a radial displaceability of the classifying wheel lamellae and/or canopy surface elements.
  • the classifying wheel lamellae and/or sail surface elements can be slidably provided in slots in support plates at the axial ends of the classifying wheel. In particular, it can be attached by screwing. In some embodiments, it is also possible to adjust the classifying wheel lamellae and/or canopy elements in the circumferential direction.
  • the sail surface elements can only extend as far as an area of the classifying wheel that is adjacent to a discharge opening.
  • the invention also provides a sifting device for sifting ground comminution products, in particular for sifting particulate bulk material, which has the sifting wheel according to the invention and a vane ring, within which the sifting wheel is rotatably arranged, with a sifting space being formed between the vane ring and the sifting wheel.
  • coarse material is primarily separated from the sifting air, in that it falls out of the sifting air flow under the influence of gravity.
  • the invention further provides a plant for grinding feed material in the form of particulate bulk material, comprising a bulk material mill, in particular a vertical roller mill, and a sifting device, as defined above.
  • the sifting device is arranged in particular above the bulk material mill, with particulate bulk material being transported from the bulk material mill to the sifting device by means of the sifting air.
  • a discharge line is advantageously arranged centrally above the classifying wheel.
  • the sifting wheel has a discharge opening in its radially inner region, so that the interior of the sifting wheel is connected to the discharge line and the sifting air can convey fines out of the sifting wheel into the discharge line.
  • the discharge line can also be arranged under the sifting wheel.
  • the invention provides a method for classifying ground comminution products, in particular particulate bulk material, wherein ground comminution product is fed into a classifying chamber surrounding a rotating classifying wheel, and an air flow is provided which flows radially inwards into the rotating classifying wheel and then in the axial direction is discharged through a discharge opening in the classifying wheel, with the air flow in the region of the classifying wheel adjacent to the discharge opening carrying part of the comminution product along in the axial direction along canopy surface elements, with the angle of inclination of the canopy surface elements relative to the axial direction of the classifying wheel being in a direction spanned by the axial direction and circumferential direction of the classifying wheel area is constant.
  • sail wheel surfaces are provided in the area of the classifying wheel adjacent to the discharge opening, so that no vortices can arise within the classifying wheel that would impair the removal of the fines in the classifying air from the classifying wheel.
  • the radial distance between the radially outer end of the canopy surface elements and the radially inner end of classifying wheel lamellae of the classifying wheel can optionally be adjusted as a function of the speed and/or diameter of the classifying wheel. This can be done by automatically adjusting the canopy surface elements and/or the classifying wheel lamellae in the radial and/or circumferential direction by actuators controlled by a controller. This can take place in particular during operation and as a function of the operating states, in particular the speed and/or the flow rate. Alternatively, an adjustment can also be made manually during breaks in operation.
  • the air flow between the classifying wheel lamellae is rotationally symmetrical.
  • FIG 1 a viewing device 1 according to an embodiment of the invention is shown.
  • the sifting device 1 enables coarse material to be separated from fine material in a sifting air stream, the coarse material to be resupplied to a grinding process and the fine material to be transported away for further processing.
  • a classifying wheel 2 is provided for this purpose, which can be rotated about a vertical axis by means of a motor 3 .
  • the classifying wheel 2 is arranged within a ring of guide vanes 4 .
  • An outer ring of classifying wheel lamellae 5 of the classifying wheel is spaced radially from the guide vane ring 4 so that a classifying space 6 is formed between the classifying wheel lamellae 5 and the guide vane ring 4 .
  • the rotation of the classifying wheel lamellae 5 together with the classifying wheel 2 creates flow conditions in the classifying chamber that cause coarse Portions of the ground comminution products fall down and only comminution products that have at least a certain degree of fineness are transported radially inward into the sifting wheel 2 .
  • the sifting air flows through the sifting wheel lamellae 5 into the inside of the sifting wheel and then through a discharge opening 7 into a downstream processing device.
  • the downstream processing device can simply consist in the fact that the fines are heaped up, transported further and/or packaged.
  • a radial distance 100 is provided between the sail surface elements 8 and the classifying wheel lamellae 5 .
  • the effect of the sail surface elements 8 on the flow of the sifting air through the sifting wheel lamellae 5 can be reduced, so that a more uniform flow profile is present in the sifting chamber 6 .
  • the canopy elements prevent unwanted potential vortices from developing inside the classifying wheel 2 and can advantageously contribute to energy recovery with regard to the flow of classifying air by reducing the necessary drive power of the motor 3 .
  • the sail surface elements 8 are attached to the shaft 9 of the classifying wheel or at least connected to it.
  • a fines removal line 10 is provided above the discharge opening 7, with which the fines with the desired grain sizes are transported away in an air stream.
  • the discharge line 10 is arranged in particular above the sifting wheel.
  • a hopper 11 can be arranged under the sifting wheel 2, which collects coarse material falling from the sifting chamber 6 and feeds it to a grinding process.
  • a grinding table can be arranged centrally under the funnel 11 so that the material to be ground is fed centrally to the rotating grinding table and then crushed again by grinding rollers before it is gripped again by a sifting air stream and fed to the sifting device 1 .
  • the material to be ground or the comminution products is thus guided through the sifting device 1 until the desired comminution stage is reached, so that the corresponding fine material can pass through the sifting chamber 6 into the interior of the sifting wheel and can then be discharged via the discharge line 10 .
  • the canopy elements 8 extend right up to the discharge opening 7 of the classifying wheel 2.
  • the classifying air flow in the classifying wheel 2 is thus guided through the canopy surface elements 8 up to its discharge opening 7. This prevents the emergence of unwanted air turbulence in the classifying wheel 2 and improves energy recovery from the visual airflow.
  • the sail surface elements 8 extend over the entire height of the sifting wheel 2.
  • FIG 2 is the in figure 1 Drawn horizontal sectional view AA represented by the embodiment of the classifying wheel 2 according to the invention.
  • the classifying wheel 2 has a central shaft 9 with sail surface elements 8 extending therefrom in the radial direction.
  • the classifying wheel lamellae 5 are arranged at a radial distance 100 from the radially outer ends 8 of the canopy surface elements 8 .
  • the classifying wheel lamellae 5 are slightly inclined here in pairs in opposite directions with respect to the radial direction. Furthermore, a higher number of classifying wheel elements 5 than of sail surface elements 8 is provided.
  • FIG 3 another embodiment of a classifying wheel 2 is shown in a horizontal sectional view.
  • the sail surface elements 8 are designed with a corrugated profile.
  • the canopy elements 8 are curved counter to the intended direction of rotation. That is, the canopy elements each have different angles to the radial direction over their extent.
  • the classifying wheel lamellae 5 are inclined relative to the radial direction.
  • the angle 200 of the radially outer end of the sail surface element 8 with respect to the radial direction is greater than the angle 300 of the classifying wheel lamellae 5. This enables an advantageous flow profile in the classifying chamber 6, i.e. radially outside of the classifying wheel lamellae 5.
  • Vortices can still arise between the sail surface elements 8, as in figure 3 is shown as an example. However, these vortices are locally limited and thus cause a significantly lower pressure loss than the vortices in classifier wheels according to the prior art.
  • an increased number of sail surface elements 8 is provided in order to further reduce the formation of vortices inside the classifying wheel 2 . Furthermore, in figure 4 shown by way of example how the sail surface elements can be guided up to the radial center of the sifting wheel. This is possible in particular if no shaft 9 is provided in this area, but instead the shaft is only flanged axially outside of the classifying wheel 2 .
  • FIG 5 a classifying wheel 2 is shown, in which a radial distance between the centrally arranged shaft 9 and the sail surface elements 8 is provided.
  • the canopy elements arranged in the radially central area nevertheless enable an effective reduction of vortices, but it can be advantageous if the canopy elements 8 are guided at least in the area adjoining the discharge opening 7 up to the central shaft 9 .
  • the sail panel elements 8 in Figures 2 to 5 each extend straight in the axial direction of the classifying wheel 2.
  • the radially outer edge of the sail surface elements is inclined with respect to the axial direction.
  • the area of the sail surface elements 8 increases toward the discharge opening, so that in these areas where a increased air flow is present, effective suppression of air vortices is possible.
  • the canopy elements 8 can not only be used to suppress eddy currents, but can also be driven by the air flow, and thus at least reduce the power input via the motor 3 for driving the classifying wheel.
  • a reaction of the canopy surface elements on the classifying space 6 can be reduced. In particular, it can be prevented that there is an uneven air flow in the circumferential direction depending on the canopy elements 8 in the viewing space 6 .

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Claims (15)

  1. Roue de tamisage (2) pour un dispositif de tamisage (1) permettant de tamiser des produits de broyage moulus, en particulier un matériau en vrac sous forme particulaire, comprenant :
    des lamelles de roue de tamisage (5) agencées dans la région radialement extérieure de la roue de tamisage (2) et des éléments formant plan de voilure (8) agencés dans la région radialement intérieure de la roue de tamisage (2) à une distance radiale des lamelles de roue de tamisage (5),
    caractérisée en ce que
    l'angle d'inclinaison des éléments formant plan de voilure (8) par rapport à la direction axiale de la roue de tamisage (2) est constant au sein d'une surface s'étendant dans la direction axiale et dans la direction circonférentielle de la roue de tamisage (2).
  2. Roue de tamisage selon la revendication 1, dans laquelle les éléments formant plan de voilure (8) s'étendent exactement dans la direction axiale de la roue de tamisage (2).
  3. Roue de tamisage selon l'une quelconque des revendications précédentes, dans laquelle la distance radiale entre l'extrémité radialement intérieure des lamelles de roue de tamisage (5) et l'extrémité radialement extérieure des éléments formant plan de voilure (8) est constante le long de toute l'étendue axiale de la roue de tamisage (2).
  4. Roue de tamisage selon l'une quelconque des revendications précédentes, dans laquelle la distance radiale entre l'extrémité radialement intérieure des lamelles de roue de tamisage (5) et l'extrémité radialement extérieure des éléments formant plan de voilure (8) représente au moins 3 %, de manière préférée au moins 5 %, et au plus 30 %, de manière préférée au plus 20 %, du diamètre de la roue de tamisage (2).
  5. Roue de tamisage selon l'une quelconque des revendications précédentes, dans laquelle les éléments formant plan de voilure (8) sont au moins partiellement courbés et/ou inclinés par rapport à la direction radiale de la roue de tamisage (2).
  6. Roue de tamisage selon l'une quelconque des revendications 1, 2, 4 ou 5, dans laquelle le bord radialement extérieur des éléments formant plan de voilure (8) est réalisé de manière au moins partiellement incurvée et/ou inclinée par rapport à la direction axiale de la roue de tamisage (2).
  7. Roue de tamisage selon l'une quelconque des revendications précédentes, dans laquelle les éléments formant plan de voilure (8) sont agencés sur un arbre central (9) au sein de la roue de tamisage (2) au moins en partie au niveau de leur extrémité radialement intérieure.
  8. Roue de tamisage selon l'une quelconque des revendications 1 à 6, dans laquelle les éléments formant plan de voilure (8) sont guidés jusqu'au centre radial de la roue de tamisage (2).
  9. Roue de tamisage selon l'une quelconque des revendications précédentes, dans laquelle les éléments formant plan de voilure (8) ne s'étendent que jusqu'à une région, adjacente à une ouverture de déversement (7), de la roue de tamisage (2).
  10. Dispositif de tamisage permettant de tamiser des produits de broyage moulus, en particulier permettant de tamiser un matériau en vrac sous forme particulaire, comprenant :
    une roue de tamisage (2) selon l'une quelconque des revendications précédentes,
    une couronne à aubes directrices (4) à l'intérieur de laquelle la roue de tamisage (2) est agencée de manière rotative, dans lequel
    un espace de tamisage (6) est formé entre la couronne à aubes directrices (4) et la roue de tamisage (2).
  11. Procédé permettant de tamiser des produits de broyage, en particulier un matériau en vrac sous forme particulaire, comprenant les étapes consistant à :
    - alimenter le produit de broyage moulu dans un espace de tamisage (6) entourant une roue de tamisage (2) rotative, et
    - fournir un flux d'air qui s'écoule radialement vers l'intérieur dans la roue de tamisage (2) rotative et qui est ensuite évacué dans la direction axiale à travers une ouverture de déversement (7) dans la roue de tamisage (2), dans lequel le flux d'air entraîne avec lui, dans la région de la roue de tamisage (2) adjacente à l'ouverture de décharge (7), une partie du produit de broyage dans la direction axiale le long d'éléments formant plan de voilure (8),
    caractérisé en ce que
    l'angle d'inclinaison des éléments formant plan de voilure (8) par rapport à la direction axiale de la roue de tamisage (2) est constant au sein d'une surface s'étendant dans la direction axiale et dans la direction circonférentielle de la roue de tamisage (2).
  12. Procédé selon la revendication 11, dans lequel la distance radiale entre l'extrémité radialement intérieure des lamelles de roue de tamisage (5) et l'extrémité radialement extérieure des éléments formant plan de voilure (8) est constante le long de toute l'étendue axiale de la roue de tamisage (2).
  13. Procédé selon l'une quelconque des revendications 11 ou 12, dans lequel les éléments formant plan de voilure (8) s'étendent exactement dans la direction axiale de la roue de tamisage (2).
  14. Procédé selon l'une quelconque des revendications 11 à 13, dans lequel la roue de tamisage (2) comprend des lamelles de roue de tamisage (5), dans lequel les lamelles de roue de tamisage (5) sont agencées dans la région radialement extérieure de la roue de tamisage (2) et les éléments formant plan de voilure (8) sont agencés à distance radiale des lamelles de roue de tamisage (5) dans la région radialement intérieure de la roue de tamisage (2), et dans lequel la distance radiale entre l'extrémité radialement extérieure des éléments formant plan de voilure (8) et l'extrémité radialement intérieure des lamelles de roue de tamisage (5) de la roue de tamisage (2) est ajustée en fonction de la vitesse de rotation et/ou du diamètre de la roue de tamisage (2).
  15. Procédé selon l'une quelconque des revendications 11 à 14, dans lequel le flux d'air entre les lamelles de roue de tamisage (5) est conçu pour présenter une symétrie de rotation.
EP20804601.1A 2019-11-22 2020-11-18 Roue de triage à éléments de voile plats et procédé de tamisage avec une telle roue Active EP3849714B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19210946 2019-11-22
PCT/EP2020/082550 WO2021099396A1 (fr) 2019-11-22 2020-11-18 Roue de tamisage à éléments de voile plats

Publications (3)

Publication Number Publication Date
EP3849714A1 EP3849714A1 (fr) 2021-07-21
EP3849714B1 true EP3849714B1 (fr) 2023-08-23
EP3849714C0 EP3849714C0 (fr) 2023-08-23

Family

ID=68654388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20804601.1A Active EP3849714B1 (fr) 2019-11-22 2020-11-18 Roue de triage à éléments de voile plats et procédé de tamisage avec une telle roue

Country Status (4)

Country Link
US (1) US11826786B2 (fr)
EP (1) EP3849714B1 (fr)
CN (1) CN114728312B (fr)
WO (1) WO2021099396A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117960333A (zh) * 2024-02-28 2024-05-03 陕西省建筑材料工业设计研究院有限公司 一种粉粒状氟石膏粉碎选粉装置及方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1229371B (de) 1966-02-04 1966-11-24 Polysius Gmbh Windsichter
CA2134456A1 (fr) 1993-03-31 1994-10-13 Mitsuhiro Ito Dispositif pneumatique de classification, a tourbillon
AT401741B (de) * 1993-08-19 1996-11-25 Thaler Horst Dipl Ing Windsichter
DE19606672A1 (de) * 1996-02-22 1997-08-28 Krupp Polysius Ag Sichter
DE19840344C2 (de) 1998-09-04 2002-04-04 Hosokawa Alpine Ag & Co Sichtrad für einen Zentrifugalkraft-Windsichter
US6902126B2 (en) * 2002-11-04 2005-06-07 Alstom Technology Ltd Hybrid turbine classifier
NO321643B1 (no) * 2004-05-18 2006-06-19 Comex As Partikkelseparator
DE102006044833B4 (de) * 2006-09-20 2010-01-21 Babcock Borsig Service Gmbh Zentrifugalsichter und Verfahren zum Sichten
FR2941389B1 (fr) 2009-01-29 2011-10-14 Fives Fcb Dispositif de separation granulometrique selective de matieres pulverulentes solides, a action centrifuge, et procede d'utilisation d'un tel dispositif
JP2010227924A (ja) * 2009-03-03 2010-10-14 Ricoh Co Ltd 分級装置及び分級方法
DE102015220269A1 (de) 2015-10-19 2017-04-20 Thyssenkrupp Ag Sichteinrichtung zum Sichten eines Materialstroms
DE102016106588B4 (de) * 2016-04-11 2023-12-14 Neuman & Esser Process Technology Gmbh Sichter

Also Published As

Publication number Publication date
EP3849714A1 (fr) 2021-07-21
CN114728312A (zh) 2022-07-08
CN114728312B (zh) 2024-07-09
US20220410212A1 (en) 2022-12-29
US11826786B2 (en) 2023-11-28
WO2021099396A1 (fr) 2021-05-27
EP3849714C0 (fr) 2023-08-23

Similar Documents

Publication Publication Date Title
DE3621221C2 (fr)
EP2851122B1 (fr) Dispositif de concassage
EP2637790B1 (fr) Procédé de broyage et broyeur
DE102011055762B4 (de) Vorrichtung zum Sichten von körnigem Gut und Mahlanlage
DE4423815C2 (de) Mühlensichter
EP2632598B2 (fr) Broyeur à galets
EP0460490B1 (fr) Séparateur pneumatique
WO2013167398A1 (fr) Dispositif de fractionnement
EP3461565B1 (fr) Séparateur
DE69305413T2 (de) Pulverisierungsvorrichtung
EP1948360B1 (fr) Broyeur a rouleaux
EP2142312B1 (fr) Dispositif et procédé de séparation d'une matière d'alimentation et l'installation de broyage
DE102010010752A1 (de) Wälzmühle
EP3849714B1 (fr) Roue de triage à éléments de voile plats et procédé de tamisage avec une telle roue
EP0350616B1 (fr) Séparateur pneumatique pour matières granuleuses, éventuellement agglomérées
EP1027161B1 (fr) Procede et dispositif pour le broyage a l'etat mouille de solides dans des liquides
DE4005031C1 (en) Dynamic wind sifter for roller mill - has central, restricted riser for air material mixt. flow with downwards deflection in top region of sifter rotor
DE69525334T2 (de) Reibmühle
DE1607536A1 (de) Jalousiesichter
DE10018005A1 (de) Verfahren und Vorrichtung zum Pulverisieren von spanartigem Material
EP3541534B1 (fr) Séparateur à air, broyeur et procédé d'élutriation d'un mélange gaz-solide
DE10122644B4 (de) Sichter
DE4132339A1 (de) Turbo-fliehkraftsichter
DE1134264B (de) Trommelmuehle mit Windsichtung
DE8616894U1 (de) Windsichter

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210415

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230315

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230526

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502020004904

Country of ref document: DE

U01 Request for unitary effect filed

Effective date: 20230901

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI

Effective date: 20230911

P04 Withdrawal of opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230907

U20 Renewal fee for the european patent with unitary effect paid

Year of fee payment: 4

Effective date: 20231128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231123

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231223

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502020004904

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

26N No opposition filed

Effective date: 20240524

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20230823

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20231118

U20 Renewal fee for the european patent with unitary effect paid

Year of fee payment: 5

Effective date: 20241126

P05 Withdrawal of opt-out of the competence of the unified patent court (upc) changed

Free format text: CASE NUMBER: APP_570213/2023

Effective date: 20230911

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20241201

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20241113

Year of fee payment: 5

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20241118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20201118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20201118

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20241118