EP0964748B1 - Procede et dispositif pour broyer des materiaux en vrac - Google Patents

Procede et dispositif pour broyer des materiaux en vrac Download PDF

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Publication number
EP0964748B1
EP0964748B1 EP98902931A EP98902931A EP0964748B1 EP 0964748 B1 EP0964748 B1 EP 0964748B1 EP 98902931 A EP98902931 A EP 98902931A EP 98902931 A EP98902931 A EP 98902931A EP 0964748 B1 EP0964748 B1 EP 0964748B1
Authority
EP
European Patent Office
Prior art keywords
sieve
deflectors
rotor
product
comminuted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98902931A
Other languages
German (de)
English (en)
Other versions
EP0964748A1 (fr
Inventor
Guido Kraemer
Eugen Chrapatsch
Volodia Chrapatsch
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.)
Buehler AG
Original Assignee
Buehler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Buehler AG filed Critical Buehler AG
Publication of EP0964748A1 publication Critical patent/EP0964748A1/fr
Application granted granted Critical
Publication of EP0964748B1 publication Critical patent/EP0964748B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/282—Shape or inner surface of mill-housings
    • B02C13/284—Built-in screens

Definitions

  • the invention relates to a method and an apparatus for comminuting Bulk goods, especially cereals, which are used in the compound feed industry and in used in the milling industry.
  • a large number of grinding devices are known, in which in a housing a rotor with striking organs, the whole circumference or only partially is surrounded with a sieve is arranged.
  • these devices that will Material fed into a work zone, i.e. a zone between the striking organs and the inner surface of a chamber (sieve, baffle plate) which encloses the rotor and crushed there. Since the striking organs are located directly in the layer of the moving crushed material, the grinding is dominated by the grinding principle, which ultimately results in the over-crushing of the particles, in too high Energy consumption and intensive wear of the striking organs and the rotor.
  • a device of the type mentioned above is known from DE 1 250 721. This discloses a beater mill, in which revolving impact elements with in one The strainer basket interacts between the friction plates or baffle jaws. A particularly high energy consumption arises when the embodiment is used 4 with a two-armed cross beater and three rubbing jaws.
  • a hammer mill in which by special Conical design of the rotor end the flow of the in the grinding chamber material that has reached the mill is affected. This can prevent excessive wear of the rotor can be reduced.
  • the US-PS 2225095 discloses a sieve for hammer mills with radial product feed.
  • the sieve surrounding the rotor has internally distributed around the circumference, triangular deflection elements. These are fixed.
  • a similar arrangement shows US-PS 2465056, with additional elements also on the Sieve are distributed, which have approximately the thickness of the sieve mantle and are perforated analogously to the sieve.
  • the aim of the present invention is to reduce energy consumption in grinding, in increasing the uniformity of the grain of the finished product and in increasing the lifespan of the work organs and the sieve.
  • the device according to the invention has a housing with inlet and outlet connections, a racket rotor and a sieve with several deflecting elements, which the Surrounded by beater rotor.
  • the baffles on the periphery of the screen are the same or varying distance from the rackets.
  • the deflection elements have smooth surface with an inclination of 20 to 80 degrees to the radius and form a distance from the rotor whose minimum width is not greater than the diameter of the grains to be processed.
  • the deflection elements are rotatable in relation to the radius executed, i.e. rotatable about a pivot point on the screen surface in the direction of this Screen surface or in the opposite direction.
  • the deflection elements are arranged radially and form a triangular prism, the lateral one, in a manner known per se Edges are directed towards the sieve.
  • the deflection elements can be adjusted along the screen circumference.
  • the device shown above is ground or ground in one Working zone between the deflection elements and the striking elements of the Rotor and goes beyond the so-called impact principle.
  • the coarse particles with high kinetic energy fly directly to the next one Percussion organ, whereas the small ponds with less kinetic energy, below Influence of the air flow generated by the rotor fly around it and its Continue motion along the perforated chamber surface and the chamber leave. This separates the fine fraction without the common one Impact of the next impact organ of the rotor takes place. So that will Product flow after its delivery into the grinding chamber a pulsating Character added with multiple changes of supply and discharge to the Blow organs.
  • the impact mill in Figure 1 consists of a housing 1 with an inlet nozzle 2 and an outlet nozzle 3. Inside the housing 1 there is a rotor 4 with the striking elements 5.
  • the rotor is surrounded by a sieve 6, on the Surface 6a a plurality of deflection elements 7.9, preferably with a triangular Cross section, are arranged.
  • the screen 6 is on its circumference in screen segments divided by the deflection elements 7, 9, which go from the sieve to the rotor inside are directed and a smooth work surface inclined in the direction of rotation of the rotor exhibit.
  • the angle of inclination in relation to the radius is in the range 20 to 80 degrees and the distance h between the ends of the striking elements 5 and the deflection elements 7.9 not less than the grain diameter of the starting product is.
  • FIG 3 shows the screen 6, which is in segments A and B with different perforations is alternately divided, the triangular prisms being the segments cover the same perforation.
  • FIG. 4 shows an adjustable arrangement of the deflection elements 7 and FIG. 5 shows the directions of rotation of the deflection element 7 to and from the screen 6 by one at the Screen surface 6a arranged pivot point 80.
  • the direction of rotation of the rotor 4th can be done both clockwise and counterclockwise.
  • the deflection elements 7, 9 are in a ring 10 along the circumference of the sieve 6 movable, cf. in particular Fig.2a arranged.
  • the starting product (uncrushed grain) is through the inlet nozzle 2 in Figure 1 fed from two sides to the rotor 4 and comes under the influence of Centrifugal forces Z on the curved rotor track on the screen surface 6a or to a sieve section S (see Fig. 2), which by two successive Deflection elements 7 and 9 is limited.
  • the Starting product within the rotor 4 of the partial crushing under the Exposure to the impact organs 5 is exposed. While moving along of the screen 6 in Fig.4, the product comes on the smooth inclined surface of the Deflection element 7, changes its direction of movement and thus comes under one single blow of the impactor 5 of the rotor 4.
  • the fine particles make a larger path along the screen surface 6a until the next movement with the deflection element 7.9, i.e. the probability increases that they pass the perforation of the sieve. simultaneously the coarser particles have only a short contact with the sieve surface 6a. which helps reduce its wear.
  • Each subsequent product conveying for shredding with the help of the deflection elements 7.9 differs from the previous one in that the product quantity is constantly decreasing because the particles of required size are continuously passing through the Perforation of the sieve 6 can be removed.
  • the crushing principle of the impact mill is based on the crushing without direct interaction of rotor 4 and sieve 5, which is in Reduction of energy consumption and an increase in the lifespan of the Striking organs.
  • the process has the best efficiency when the product feed to the rotor takes place at a certain angle. This angle must be in the area with the radius from 20 to 80 degrees.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Claims (10)

  1. Dispositif pour le broyage de produits en vrac avec un boítier (1) avec des tubulures d'entrée et de sortie (2, 3), avec un rotor (4) qui est entouré, sur tout son volume ou seulement en partie, par un tamis (4) et avec des éléments de déviation (7, 9) disposés sur le tamis, caractérisé en ce que les éléments de déviation (7) sont positionnés de manière à pouvoir pivoter par rapport au rayon, et que de plus les éléments de déviation (7) sont disposés de manière à pouvoir pivoter autour d'un point de rotation (80) sur la surface du tamis (6a) dans la direction de la surface du tamis (6a) et dans la direction opposée.
  2. Dispositif selon la revendication 1, caractérisé en ce que les éléments de déviation (7) présentent une surface de travail lisse avec un angle d'inclinaison α dans une fourchette de 20 à 80 degrés par rapport au rayon.
  3. Dispositif selon les revendications 1 et 2, caractérisé en ce que l'intervalle entre les éléments de déviation (7, 9) et les organes de battage (5) du rotor (4) ne dépasse pas le diamètre de la granulation du produit initial.
  4. Dispositif selon une des revendications 1 à 3, caractérisé en ce que les éléments de déviation (7, 9) sont disposés de manière à pouvoir se déplacer le long du volume du tamis (6).
  5. Dispositif selon la revendication 1 ou 4, caractérisé en ce que le tamis (6) présente des segments à perforations différentes.
  6. Dispositif selon les revendications 4 et 5, caractérisé en ce que les prismes triangulaires recouvrent respectivement avec leurs arêtes latérales les segments à perforations identiques.
  7. Dispositif selon la revendications 4, caractérisé en ce que les éléments de déviation (7, 9) peuvent se déplacer le long d'un cercle (10) sur le volume de la surface du tamis (6a).
  8. Dispositif selon une des revendications précédentes, caractérisé en ce qu'il est un broyeur batteur et déviateur.
  9. Procédé pour le broyage de produits en vrac caractérisé par
    a) l'acheminement du produit pré-broyé suivant un angle défini β et à une vitesse prédéterminée jusqu'au tamis (6),
    b) le déplacement du produit le long du tamis avec séparation simultanée de la fraction fine et acheminement de la fraction insuffisamment broyée par action des éléments de déviation (7, 9) pour recevoir un coup supplémentaire des organes de battage (5),
    c) la répétition plusieurs fois du cycle d'acheminement de la fraction encore trop peu broyée jusqu'au rotor (4), son broyage et son transfert jusqu'à la surface du tamis (6a).
  10. Procédé selon la revendication 9, caractérisé en ce que l'angle β peut varier dans une fourchette de 20 à 80 degrés par rapport au rayon.
EP98902931A 1997-03-07 1998-02-26 Procede et dispositif pour broyer des materiaux en vrac Expired - Lifetime EP0964748B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19709345 1997-03-07
DE19709345A DE19709345A1 (de) 1997-03-07 1997-03-07 Verfahren und Vorrichtung zur Zerkleinerung von Schüttgütern
PCT/CH1998/000080 WO1998040163A1 (fr) 1997-03-07 1998-02-26 Procede et dispositif pour broyer des materiaux en vrac

Publications (2)

Publication Number Publication Date
EP0964748A1 EP0964748A1 (fr) 1999-12-22
EP0964748B1 true EP0964748B1 (fr) 2002-09-18

Family

ID=7822549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98902931A Expired - Lifetime EP0964748B1 (fr) 1997-03-07 1998-02-26 Procede et dispositif pour broyer des materiaux en vrac

Country Status (13)

Country Link
EP (1) EP0964748B1 (fr)
KR (1) KR100501712B1 (fr)
CN (1) CN1163304C (fr)
AT (1) ATE224234T1 (fr)
AU (1) AU5980198A (fr)
DE (2) DE19709345A1 (fr)
DK (1) DK0964748T3 (fr)
ES (1) ES2181161T3 (fr)
NO (1) NO994320L (fr)
RU (1) RU2224595C2 (fr)
TR (1) TR199901748T2 (fr)
UA (1) UA66782C2 (fr)
WO (1) WO1998040163A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4289013B2 (ja) * 2003-05-13 2009-07-01 株式会社サタケ 穀物の衝撃式粉砕装置
DE202009011011U1 (de) * 2009-09-16 2011-02-10 Th. Buschhoff Gmbh & Co. Hammermühle
EA026359B1 (ru) * 2012-12-04 2017-03-31 Республиканское Унитарное Предприятие "Научно-Практический Центр Национальной Академии Наук Беларуси По Механизации Сельского Хозяйства" (Руп "Нпц Нан Беларуси По Механизации Сельского Хозяйства") Дробилка зерна вертикальная
RU2568754C2 (ru) * 2013-12-04 2015-11-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Оренбургский государственный аграрный университет" Дробилка зерна

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250721B (fr) * 1967-09-21
US2225095A (en) * 1939-04-27 1940-12-17 Claud Mcclellan Screen for hammer mills
DE889108C (de) * 1939-09-05 1953-09-07 Josef Klagsbrunn Schleudermuehle
DE718381C (de) * 1941-01-14 1942-03-10 L & C Steinmueller Schlaegermuehle
US2465056A (en) * 1945-03-22 1949-03-22 Auraldo W Bond Mill screen with auxiliary perforate baffles on operating face
US2488714A (en) * 1945-10-01 1949-11-22 Grayce A Delp Adjustable screen for hammer mills
US2543599A (en) * 1946-04-06 1951-02-27 Rietz Mfg Co Screen structure for hammer mills
FR2598100B1 (fr) * 1986-05-02 1988-07-29 Copex Dispositif d'ejection des matieres imbroyables et de variation du rendement d'un broyeur a marteaux pour le traitement des ferrailles
US4907750A (en) * 1988-03-09 1990-03-13 Prater Industries, Inc. Hammermill
FR2715330B1 (fr) * 1994-01-25 1996-03-29 Andre Bonnet Broyeur à aubes multiples avec chaque élément fixe de broyage suivi individuellement par une classification par air.

Also Published As

Publication number Publication date
NO994320D0 (no) 1999-09-06
DK0964748T3 (da) 2003-01-27
DE59805608D1 (de) 2002-10-24
RU2224595C2 (ru) 2004-02-27
NO994320L (no) 1999-11-03
TR199901748T2 (en) 2000-03-21
KR20000070365A (ko) 2000-11-25
WO1998040163A1 (fr) 1998-09-17
CN1163304C (zh) 2004-08-25
DE19709345A1 (de) 1998-09-10
UA66782C2 (en) 2004-06-15
KR100501712B1 (ko) 2005-07-18
EP0964748A1 (fr) 1999-12-22
ES2181161T3 (es) 2003-02-16
CN1246080A (zh) 2000-03-01
ATE224234T1 (de) 2002-10-15
AU5980198A (en) 1998-09-29

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