WO1998040163A1 - 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
WO1998040163A1
WO1998040163A1 PCT/CH1998/000080 CH9800080W WO9840163A1 WO 1998040163 A1 WO1998040163 A1 WO 1998040163A1 CH 9800080 W CH9800080 W CH 9800080W WO 9840163 A1 WO9840163 A1 WO 9840163A1
Authority
WO
WIPO (PCT)
Prior art keywords
sieve
rotor
elements
deflection
deflection elements
Prior art date
Application number
PCT/CH1998/000080
Other languages
German (de)
English (en)
Inventor
Guido Kraemer
Eugen Chrapatsch
Volodia Chrapatsch
Original Assignee
Bühler 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 Bühler AG filed Critical Bühler AG
Priority to UA99084769A priority Critical patent/UA66782C2/xx
Priority to KR10-1999-7006598A priority patent/KR100501712B1/ko
Priority to AU59801/98A priority patent/AU5980198A/en
Priority to DK98902931T priority patent/DK0964748T3/da
Priority to DE59805608T priority patent/DE59805608D1/de
Priority to AT98902931T priority patent/ATE224234T1/de
Priority to EP98902931A priority patent/EP0964748B1/fr
Publication of WO1998040163A1 publication Critical patent/WO1998040163A1/fr
Priority to NO19994320A priority patent/NO994320L/no

Links

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 a device for comminuting bulk goods, in particular grain, which are used in the compound feed industry and in the milling industry.
  • a large number of grinding devices are known, in which a rotor with striking elements, which is surrounded on the entire circumference or only partially with a sieve, is arranged in a housing.
  • the material is fed into a work zone, i.e. a zone between the striking elements and the inner surface of a chamber (sieve, baffle plate), which encloses the rotor and comminutes it there.
  • a work zone i.e. a zone between the striking elements and the inner surface of a chamber (sieve, baffle plate), which encloses the rotor and comminutes it there. Since the striking organs move directly in the layer of comminuted material, the grinding is dominated by the rubbing principle, which in the end results in over-crushing of the particles, excessive energy consumption and intensive wear and tear on 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 rotating beater elements interact with friction or baffle jaws arranged in a sieve basket between sieve plates. A particularly high energy consumption arises when using the embodiment according to FIG. 4 with a two-armed cross beater and three friction jaws.
  • GB 1 41 1 085 discloses an impact mill in which the flow of the material that has entered the grinding chamber of the mill is influenced by the special conical design of the rotor end. This can reduce the excessive wear of the rotor.
  • the aim of the present invention is to reduce the energy consumption during grinding, to increase the uniformity of the grain size of the 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 nozzles, a racket rotor and a screen with a plurality of deflection elements which surround the pop rotor.
  • the baffles on the circumference of the sieve are arranged at the same or varying distance from the rackets.
  • the deflection elements have a smooth surface with an inclination of 20 to 80 degrees to the radius and form a distance from the rotor, the minimum width of which is not greater than the diameter of the grains to be processed.
  • the deflection elements are designed to be rotatable in relation to the radius, 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 edges of which are directed towards the sieve.
  • the deflection elements can be adjusted along the screen circumference.
  • the possibility of displaceable execution of the deflection elements along the circumference of the sieve surface ensures uniform wear of the sieve during operation, since it already covers worn segments of the sieve.
  • the next impact element of the rotor is impacted, so that after the product stream is fed into the grinding chamber, a pulsating character is added, with the supply and discharge to the impact organs being changed several times
  • FIG. 1 schematic representation of the impact mill in longitudinal view
  • Fig. 4 schematic representation of the mill in side view when using adjustable deflection elements
  • 5 shows a schematic view of a sieve detail with an adjustable deflection element.
  • the beater mill in FIG. 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 beating elements 5.
  • the rotor is surrounded by a sieve 6, on the surface 6a of which a plurality of deflection elements 7 , 9, preferably with a triangular cross section.
  • the screen 6 is divided on its circumference into screen segments by the deflection elements 7, 9, which are directed inwards from the screen to the rotor and have a smooth working surface with an inclination in the direction of rotation of the rotor.
  • the angle of inclination in relation to the radius is in the range from 20 to 80 degrees and the distance h between the ends of the impact members 5 and the deflection elements 7, 9 is not less than the grain diameter of the starting product).
  • FIG 3 shows the screen 6, which is alternately divided into segments A and B with different perforations, the triangular prisms covering the segments of the same perforation.
  • FIG. 4 shows an adjustable arrangement of the deflecting elements 7 and FIG. 5 shows the directions of rotation of the deflecting element 7 to and from the sieve 6 around a pivot point 80 arranged on the sieve surface 6a.
  • the direction of rotation of the rotor 4 can take place both clockwise and counterclockwise.
  • the deflection elements 7, 9 can be displaced in a ring 10 along the circumference of the sieve 6, cf. in particular Fig.2a arranged.
  • the mill works as follows
  • the starting product (uncrushed grain) is fed to the rotor 4 from two sides via the inlet connection 2 in FIG. 1 and, under the action of the centrifugal forces Z on the curved rotor path, reaches the sieve surface 6a or a sieving section S (see FIG. 2), which passes through two successive deflection elements 7 and 9 is limited. It should be noted that the starting product within the rotor 4 is subjected to partial comminution under the action of the striking elements 5. During its movement along the sieve 6 in FIG.
  • the product comes onto the smooth, inclined surface of the deflection element 7, changes its direction of movement and arrives so under a single stroke of the striking element 5 of the rotor 4
  • the product impacts the striking element 5, it is broken down into particles of different sizes which, under the action of the inertial forces which are given to them during the stroke, arrive at the next sieving section S which the deflecting element 7 in the
  • Direction of rotation of the rotor 4 follows. During the movement along the sieve surface 6a under the influence of the centrifugal forces and the air flow generated by the rotor, the product is separated into large particles which have passed through the perforation of the sieve 6 are over the discharge nozzle 3 is removed from the impact mill as the starting product (finished product). The coarser particles and a certain number of small particles which have not had time to pass through the sieve reach the next deflecting element 7 which lies in the direction of movement of the product
  • Each subsequent product requirement for comminution with the aid of the deflecting elements 7, 9 differs from the previous one in that the amount of product decreases continuously because the particles of the required size are continuously removed through the perforation of the sieve 6
  • the process for crushing debris is based on the following principles
  • the crushing principle of the impact mill is based on the crushing without direct interaction of the rotor 4 and sieve 5, which manifests itself in a reduction in energy consumption and in an increase in the life of the impact organs.
  • the perforated surface of the chamber is spaced from the rotor by the distance necessary to prevent the rotor from striking the product as it passes
  • the process has the best efficiency if the product is fed to the rotor at a certain angle. This angle to the radius must be in the range of 20 to 80 degrees.
  • P1, P2 double arrows indicate the deflection of the material to and from the percussion organs

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif pour broyer des matériaux en vrac. Un rotor (4) comportant des organes de percussion (5) est placé dans la chambre de broyage du dispositif et entouré d'un tamis (6) présentant plusieurs éléments déflecteurs (7, 9) au niveau de sa surface (6a). Le broyage s'effectue par mouvements pulsés, avec alternance de l'acheminement et de l'évacuation du produit respectivement en direction et à partir des organes de percussion, la fraction fine étant séparée du flux global.
PCT/CH1998/000080 1997-03-07 1998-02-26 Procede et dispositif pour broyer des materiaux en vrac WO1998040163A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
UA99084769A UA66782C2 (en) 1997-03-07 1998-02-26 Method and device for fragmenting bulk materials
KR10-1999-7006598A KR100501712B1 (ko) 1997-03-07 1998-02-26 벌크 재료의 분쇄 방법 및 장치
AU59801/98A AU5980198A (en) 1997-03-07 1998-02-26 Method and device for fragmenting bulk materials
DK98902931T DK0964748T3 (da) 1997-03-07 1998-02-26 Fremgangsmåde og apparat til findeling af styrtgods
DE59805608T DE59805608D1 (de) 1997-03-07 1998-02-26 Verfahren und vorrichtung zur zerkleinerung von schüttgütern
AT98902931T ATE224234T1 (de) 1997-03-07 1998-02-26 Verfahren und vorrichtung zur zerkleinerung von schüttgütern
EP98902931A EP0964748B1 (fr) 1997-03-07 1998-02-26 Procede et dispositif pour broyer des materiaux en vrac
NO19994320A NO994320L (no) 1997-03-07 1999-09-06 Fremgangsmate og anordning for oppdeling av bulkmateriale

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19709345.0 1997-03-07
DE19709345A DE19709345A1 (de) 1997-03-07 1997-03-07 Verfahren und Vorrichtung zur Zerkleinerung von Schüttgütern

Publications (1)

Publication Number Publication Date
WO1998040163A1 true WO1998040163A1 (fr) 1998-09-17

Family

ID=7822549

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1998/000080 WO1998040163A1 (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

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2225095A (en) * 1939-04-27 1940-12-17 Claud Mcclellan Screen for hammer mills
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
FR2598100A1 (fr) * 1986-05-02 1987-11-06 Copex Dispositif d'ejection des matieres imbroyables et de variation du rendement d'un broyeur a marteaux pour le traitement des ferrailles
FR2715330A1 (fr) * 1994-01-25 1995-07-28 Bonnet Andre Broyeur à aubes multiples avec chaque élément fixe de broyage suivi individuellement par une classification par air.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250721B (fr) * 1967-09-21
DE889108C (de) * 1939-09-05 1953-09-07 Josef Klagsbrunn Schleudermuehle
US4907750A (en) * 1988-03-09 1990-03-13 Prater Industries, Inc. Hammermill

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2225095A (en) * 1939-04-27 1940-12-17 Claud Mcclellan Screen for hammer mills
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
FR2598100A1 (fr) * 1986-05-02 1987-11-06 Copex Dispositif d'ejection des matieres imbroyables et de variation du rendement d'un broyeur a marteaux pour le traitement des ferrailles
FR2715330A1 (fr) * 1994-01-25 1995-07-28 Bonnet Andre Broyeur à aubes multiples avec chaque élément fixe de broyage suivi individuellement par une classification par air.

Also Published As

Publication number Publication date
UA66782C2 (en) 2004-06-15
NO994320L (no) 1999-11-03
CN1163304C (zh) 2004-08-25
ATE224234T1 (de) 2002-10-15
DE19709345A1 (de) 1998-09-10
RU2224595C2 (ru) 2004-02-27
KR20000070365A (ko) 2000-11-25
AU5980198A (en) 1998-09-29
EP0964748B1 (fr) 2002-09-18
CN1246080A (zh) 2000-03-01
NO994320D0 (no) 1999-09-06
DE59805608D1 (de) 2002-10-24
ES2181161T3 (es) 2003-02-16
EP0964748A1 (fr) 1999-12-22
DK0964748T3 (da) 2003-01-27
KR100501712B1 (ko) 2005-07-18
TR199901748T2 (en) 2000-03-21

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