EP2563516B1 - Broyeur à tamis avec une fixation du tamis améliorée - Google Patents

Broyeur à tamis avec une fixation du tamis améliorée Download PDF

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Publication number
EP2563516B1
EP2563516B1 EP11716182.8A EP11716182A EP2563516B1 EP 2563516 B1 EP2563516 B1 EP 2563516B1 EP 11716182 A EP11716182 A EP 11716182A EP 2563516 B1 EP2563516 B1 EP 2563516B1
Authority
EP
European Patent Office
Prior art keywords
sieve
screen
longitudinal edge
positioning recess
mill according
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.)
Not-in-force
Application number
EP11716182.8A
Other languages
German (de)
English (en)
Other versions
EP2563516A2 (fr
EP2563516B8 (fr
Inventor
Leonhard Heinrichsmeier
Claus Eberhardt
Claus Ulrich
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.)
Hosokawa Alpine AG
Original Assignee
Hosokawa Bepex GmbH
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 Hosokawa Bepex GmbH filed Critical Hosokawa Bepex GmbH
Priority to SI201130242T priority Critical patent/SI2563516T1/sl
Publication of EP2563516A2 publication Critical patent/EP2563516A2/fr
Publication of EP2563516B1 publication Critical patent/EP2563516B1/fr
Application granted granted Critical
Publication of EP2563516B8 publication Critical patent/EP2563516B8/fr
Not-in-force legal-status Critical Current
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
    • B02C2023/165—Screen denying egress of oversize material

Definitions

  • the invention relates to a screen mill having a screen basket with a curved inner surface for supporting a screen, which rests against the curved inner side of the screen basket and two opposite, mutually parallel longitudinal edges, and further comprising a material inlet above the screen and a cylindrical rotor which is arranged for rotation within the screen basket.
  • a screen mill is from the US 2004/0251347 A1 known.
  • Screen mills of the type mentioned serve for the comminution of granular products or slugs, as for example produces a roller press by powdery material passes through the nip of the roller press.
  • screening mills are equipped with a cylinder-segment-shaped screen basket, in which different screens can be installed. These screens are in the initial state flat and rectangular and square in shape and take by insertion into the screen basket to a shape corresponding to the curved inside of the screen basket, e.g. So it is semi-cylindrical or U-shaped. Rasp screens, wire mesh screens and sheet metal screens with openings are particularly used.
  • the sieve In a conventional sieve mill, the sieve is attached to the sieve basket by means of a clamping strip and screws. To change the sieve, the screws must be loosened with the aid of tools.
  • DD-161 249-A3 discloses a screen mill according to the preamble of claim 1.
  • the invention has for its object to provide a screen mill with an improved screen holder to perform a screen change faster.
  • the one longitudinal edge of the screen is arranged in a first retaining strip having a first positioning recess for receiving the one longitudinal edge, and that the other longitudinal edge of the screen in a second retaining strip is arranged, which has a second positioning recess for receiving the other longitudinal edge, and that finally the second retaining strip between an open position in which the second positioning recess allows removal and feeding of the associated longitudinal edge of the screen, and a Closed position is rotatable, in which the second positioning recess exerts a compressive force on the longitudinal edge arranged in it.
  • the sieve is clamped exclusively by the two retaining strips in the sieve basket, wherein by means of the clamping, which is achieved by the pressure force on the located in the second positioning longitudinal edge of the screen and the support of the opposite longitudinal edge in the first retaining strip , the necessary tension is built up, which is necessary, so that the sieve fits tightly against the screen basket.
  • the clamping device according to the invention by means of two retaining strips, one of which is rotatable between an open position and a closed position, also allows a tool-free and extremely fast change of the screen, since to remove a built-in screen only the second retaining strip must be rotated from its closed position to the open position.
  • the second positioning recess releases the longitudinal edge of the screen received in it, so that it is laterally, i. can be removed substantially radially from the second positioning recess of the second retaining strip.
  • the sieve can then be axially pulled out of the sieve basket and replaced with another sieve, which is brought into a clamping engagement with the sieve basket by turning the second holding strip into the closed position.
  • the second retaining strip is rotatable about its central longitudinal axis and the second positioning recess, in particular a pressure surface of the second positioning recess, is arranged eccentrically in the second retaining strip. Due to the eccentric arrangement of the second positioning recess, a pressure force is built up when moving the second retaining strip from its open position into its closed position and transmitted to the longitudinal edge located in the second positioning recess. Alternatively, it would also be possible to have the second retaining strip rotated about an eccentrically arranged longitudinal axis to produce the desired compressive force.
  • the second positioning recess has an inclined guide surface which begins at the outer periphery of the second retaining strip and continues inwardly on a pressure surface which extends at an angle to the guide surface, forms the bottom of the second positioning recess and in the closed position, the pressure force on the in the second Positionierausströmung longitudinal edge of the screen transmits.
  • the guide surface thus ensures that in the open position of the second retaining strip abutting her edge of the longitudinal edge is moved when moving the second retaining strip in the closed position to the printing surface, so that the longitudinal edge of the screen is positioned on the printing surface to the condition for transmission to create the pressure force on the longitudinal edge.
  • the pressure force is then built up and transmitted to the longitudinal edge.
  • the pressure surface is arranged at such an angle to the guide surface, that the pressure surface in the closed position rests flat on the arranged in the second positioning longitudinal edge of the wire.
  • said angle is an obtuse angle.
  • a stop surface extending from the wall of the pressure surface opposite the guide surface can be provided, which prevents the positioning edge located in the second positioning recess from leaving the positioning recess due to a form fit.
  • the abutment surface is thus arranged so that, in the closed position of the second retaining strip, it is either already in engagement with the outside of the screen or comes into engagement with the sieve exterior when the longitudinal edge moves laterally outwardly in the second positioning recess, for example due to vibrations ,
  • At least the second retaining strip has a circular cross-section, which simplifies their rotatable mounting.
  • the first retaining strip may have a circular cross-section to standardize the production.
  • a movement of the second retaining strip between the open position and the closed position preferably takes place from one end of the second retaining strip ago, either by means of a corresponding handle or by applying a tool to this end of the retaining strip.
  • the tool may be, for example, a hex key or a spanner. It is crucial, however, that in contrast to a conventional screen mill no sieve holding screws or the like must be loosened and tightened again and that the rotation of the second retaining strip in its closed position or from its closed position can also be done from outside an insulator or containment, in the sieve mill can be arranged.
  • the crushing proceeds with the best efficiency, when between the rotor and the screen basket or the screen only a small distance is set.
  • the screen basket must be height adjustable to maintain the desired small clearance between the rotor and screen.
  • a height adjustability of the screen basket means a changing distance between the bottom of the material inlet and the top of the screen basket.
  • the gap that forms depending on Siebkorbeinwolf is conventionally bridged by baffles, which prevent flowing through the material feed material from entering the gap. These baffles are fastened by screws, which is particularly undesirable when the screen mill is operated completely housed, as is increasingly the case in the pharmaceutical industry.
  • the upper side of the screen basket and the underside of the material inlet are formed as plane surfaces, between which a three-dimensional labyrinth seal is arranged to eliminate said baffles.
  • This solution according to the invention which can be used alone or together with the above-described clamp fastening of the screen, eliminates any screw-fastening screws which are difficult to clean or which can become loose.
  • the sieve in preferred embodiments of the sieve mill according to the invention the sieve basket in the region of the legs of the U-shaped sieve cross section is provided with guide plates, the sieved or ground material down to the base of the U-shaped Lead sieve cross-section.
  • Such a solution has the advantage that a poorly flowable fine fraction of the ground product is guided to the bottom of the U-shaped sieve cross-section and the outlet funnel required there can be narrower, which reduces the overall height of the entire device.
  • This constructive solution can also be used alone or together with one or more of the features according to the invention already described.
  • a screen mill generally designated 10, the main components of which are a screen basket 12 for receiving a screen 14 and a disk-shaped rotor 16 disposed within the screen basket 12 and screen 14 for rotation about an axis A.
  • the screen basket 12 which is approximately U-shaped in cross-section, is open at the top so that it can be fed with material to be comminuted by means of a material inlet 18 funnel-shaped in cross section, which is arranged on top of the screen basket 12.
  • Sieve mills of this type can be used, for example, for the comminution of slugs which have been produced from pulverulent material by means of a roller press.
  • the roller press can be directly above the material inlet 18 of the screen mill 10th to form a roller press with integrated screen mill for conditioning powdery starting material.
  • the flat in the initial state screen 14 abuts the U-shaped curved inside of the screen basket 12 and is clamped by a device described in more detail later against the Siebkorbinnenseite.
  • material flows through the material inlet 18 into the screen 14 and is moved by the rotating rotor 16 over the inner screen surface.
  • the rotor 16 is provided with a plurality of evenly distributed on its circumference Mahlleisten 20 which protrude radially and axially from the rotor 16 and consist of a particularly wear-resistant material.
  • the grinding bars 20 fastened in the rotor 16 and welded in here have a cross-section which protrudes conically from the rotor surface and ends in a grinding edge 22. Between circumferentially successive grinding edges 22 pocket-shaped depressions 24 are formed on the disk-shaped rotor.
  • the sieve mill 10 shown has an improved sieve holder, which will be explained in more detail below.
  • the novel screen holder has above the screen basket 12 arranged and parallel to its upper edges extending retaining strips 28, 30, of which a first retaining strip 28 for cooperation with a longitudinal edge 32 of the screen 14 and a second, about an axis S rotatable retaining strip 30 for Cooperation with the opposite, other longitudinal edge 34 of the screen 14 is determined.
  • the first retaining strip 28 is provided with a first Positionieraus strictlyung 36 which is formed in its surface and which extends along the first retaining strip 28 to receive the one longitudinal edge 32 of the wire 14 supporting in itself.
  • the second retaining strip 30 is provided with a second positioning recess 38 which is adapted to receive the other longitudinal edge 34 of the Sieves 14 is used, the cross-sectional shape of which differs from that of the first positioning recess 36, however, in order to realize an open position and a closed or clamping position by turning the second retaining strip 30.
  • the second positioning recess 38 comprises an inclined guide surface 40 which begins at the outer periphery of the circular cross-sectionally shaped second retaining strip 30 in the illustrated embodiment, continues inward and ends at a pressure surface 42 which extends at an obtuse angle to the guide surface 40 and the bottom of the second Positioning recess 38 forms. It can be seen that in the open position of the second retaining strip 30, an inner edge of the longitudinal edge 34 of the screen 14 bears against the guide surface 40.
  • the second retaining strip 30 about its central longitudinal axis S, starting from the in Fig. 2 Played open position in a clockwise direction, the inner edge of the longitudinal edge 34 slides on the guide surface 40 down until it meets the pressure surface 42. Further rotation of the second retaining strip 30 in the clockwise direction then causes the entire longitudinal edge 34 to be applied to the pressure surface 42, wherein the pressure surface 42 due to its eccentric arrangement in the second retaining strip 30 at the same time exerts a compressive force on the longitudinal edge 34, which extends beyond the in shape the first positioning recess 36 in the first retaining strip 28 formed abutment, so that the screen 14 is pressed against the inside of the screen basket 12 and clamped in this position when the second retaining strip 30 their in Fig. 3 reproduced closed position has reached.
  • the stop surface 44 depending on the width of the longitudinal edge 34 may or may not be in engagement with the Siebau basicseite, but it prevents in any case an accidental slipping out of the longitudinal edge 34 of the second positioning recess 38th
  • the second retaining strip 30 need only be rotated counterclockwise from the closed position to its open position, in which the sieve 14 is relaxed and can be easily pulled axially out of the two retaining strips 28 and 30, for example replace it or clean it.
  • the screen basket 12 is designed to be height-adjustable, i. a distance between its planar top 48 and the flat bottom 50 of the material inlet 18 is variable.
  • a three-dimensional labyrinth seal 52 is present, which has a in all three spatial directions extending labyrinth of sealing gaps, which prevent material passage due to their flow resistance.
  • the sealing effect of the labyrinth seal 52 enables the height adjustment of the screen basket 12 required for screen thickness adjustment with good sealing, without requiring sealing elements, baffles or the like fastened by means of screws.
  • the screen basket 12 In order to guide fine material which has passed the screen 14 to the material outlet 26, the screen basket 12 in the region of the legs of its U-shaped cross-section, i. provided in the steep sections of the cross section, with baffles 54, so that an unillustrated discharge funnel must first begin in the area of the material outlet 26 and therefore may have a lower height.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Paper (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Claims (10)

  1. Broyeur à tamis (10), comprenant
    - un panier de tamis (12) avec une face interne incurvée pour soutenir un tamis (14) qui repose sur la face interne incurvée du panier de tamis (12) et présente deux bords longitudinaux (32, 34) parallèles et opposés,
    - un dispositif d'amenée (18) de matière au-dessus du tamis (14) et
    - un rotor cylindrique (16) qui est disposé de manière à tourner à l'intérieur du panier de tamis (12),
    dans lequel
    - l'un (32) des bords longitudinaux du tamis (14) est disposé dans une première baguette de retenue (28) qui présente un premier évidement de positionnement (36) pour recevoir le bord longitudinal (32), et
    - l'autre bord longitudinal (34) du tamis (14) est disposé dans une deuxième baguette de retenue (30) qui présente un deuxième évidement de positionnement (38) pour recevoir l'autre bord longitudinal (34),
    caractérisé en ce que
    - la deuxième baguette de retenue (30) est susceptible de pivoter entre une position d'ouverture dans laquelle le deuxième évidement de positionnement (38) permet le retrait et l'insertion du bord longitudinal (34) associé du tamis (14), et une position de fermeture dans laquelle le deuxième évidement de positionnement (38) exerce une force de pression sur ce bord longitudinal (34).
  2. Broyeur à tamis selon la revendication 1,
    caractérisé en ce que la deuxième baguette de retenue (30) peut pivoter autour de son axe longitudinal médian (S) et le deuxième évidement de positionnement (38) est disposé de manière excentrée dans la deuxième baguette de retenue (30).
  3. Broyeur à tamis selon la revendication 2,
    caractérisé en ce que le deuxième évidement de positionnement (38) présente une surface de guidage inclinée (40) qui commence à la périphérie extérieure de la deuxième baguette de retenue (30), se prolonge vers l'intérieur et se termine sur une surface de pression (42) qui s'étend suivant un angle par rapport à la surface de guidage (40), forme le fond du deuxième évidement de positionnement (38) et transmet, dans la position de fermeture, la force de pression à l'autre bord longitudinal (34) du tamis (14).
  4. Broyeur à tamis selon la revendication 3,
    caractérisé en ce que la surface de pression (42) est disposée par rapport à la surface de guidage (40) suivant un angle tel que la surface de pression (42) repose à plat sur l'autre bord longitudinal (34) du tamis (14) dans la position de fermeture.
  5. Broyeur à tamis selon la revendication 3 ou 4,
    caractérisé en ce que l'angle est un angle obtus.
  6. Broyeur à tamis selon l'une des revendications 3 à 5,
    caractérisé en ce que depuis le bord de la surface de pression (42) opposé à la surface de guidage (40) s'étend une surface de butée (44) qui, dans la position de fermeture de la deuxième baguette de retenue (30), est en prise avec une face externe du tamis (14).
  7. Broyeur à tamis selon l'une des revendications précédentes,
    caractérisé en ce que la première baguette de retenue (28) et/ou la deuxième baguette de retenue (30) ont une section circulaire.
  8. Broyeur à tamis selon l'une des revendications précédentes,
    caractérisé en ce que la face supérieure du panier de tamis (12) et la face inférieure du dispositif d'amenée (18) de matière sont des surfaces planes entre lesquelles un joint à labyrinthe tridimensionnel (52) est disposé.
  9. Broyeur à tamis selon l'une des revendications précédentes,
    caractérisé en ce que le tamis (14) présente une section en U.
  10. Broyeur à tamis selon la revendication 9,
    caractérisé en ce que le panier de tamis (12) est pourvu, au niveau des branches de la section de tamis en U, de tôles de guidage (54) qui guident la matière tamisée vers le bas en direction de la base de la section de tamis en U.
EP11716182.8A 2010-04-27 2011-04-20 Broyeur à tamis avec une fixation du tamis améliorée Not-in-force EP2563516B8 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201130242T SI2563516T1 (sl) 2010-04-27 2011-04-20 Sejalni mlin z izboljšanim držalom sita

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010018419 DE102010018419A1 (de) 2010-04-27 2010-04-27 Siebmühle mit verbesserter Siebhalterung
PCT/EP2011/002024 WO2011134624A2 (fr) 2010-04-27 2011-04-20 Broyeur à tamis ayant une fixation améliorée du tamis

Publications (3)

Publication Number Publication Date
EP2563516A2 EP2563516A2 (fr) 2013-03-06
EP2563516B1 true EP2563516B1 (fr) 2014-07-02
EP2563516B8 EP2563516B8 (fr) 2014-08-20

Family

ID=44625994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11716182.8A Not-in-force EP2563516B8 (fr) 2010-04-27 2011-04-20 Broyeur à tamis avec une fixation du tamis améliorée

Country Status (8)

Country Link
US (1) US8820667B2 (fr)
EP (1) EP2563516B8 (fr)
CA (1) CA2797465A1 (fr)
DE (1) DE102010018419A1 (fr)
ES (1) ES2480971T3 (fr)
HR (1) HRP20140826T1 (fr)
SI (1) SI2563516T1 (fr)
WO (1) WO2011134624A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103252271B (zh) * 2013-05-28 2016-03-30 长沙深湘通用机器有限公司 一种锤式破碎机
CN113019638B (zh) * 2021-03-26 2022-12-23 邢台劳特斯新材料科技有限公司 一种化工机械用原料研磨装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083746A (en) * 1960-08-30 1963-04-02 Elton L Fenton Feed mill
US3756519A (en) 1971-08-18 1973-09-04 Entoleter Novel granulating apparatus of modulator construction
CH567883A5 (fr) 1974-05-29 1975-10-15 Buehler Ag Geb
US4151960A (en) * 1977-11-07 1979-05-01 Conair, Inc. Comminution device
DD161249A3 (de) * 1978-12-14 1985-09-18 Guenther Fischer Siebgranulator zur selektiven zerkleinerung
FR2494137A1 (fr) * 1980-11-19 1982-05-21 Pelletier Rene Broyeur notamment pour cereales
DE3909427C1 (en) * 1989-02-02 1990-03-29 Joest Gmbh + Co Kg, 4400 Muenster, De Tentering device for screen fabrics
DE29516988U1 (de) * 1995-10-27 1997-03-06 Anton Hurtz GmbH & Co KG, 41334 Nettetal Klemmvorrichtung zum Spannen bogenförmigen Materials
US5975443A (en) * 1996-08-08 1999-11-02 Hundt; Vincent G. Waste recycling device
US6910647B2 (en) * 2001-08-21 2005-06-28 Peterson Pacific Corporation Side removal screen system for materials reducing machines
US7240871B2 (en) 2002-11-05 2007-07-10 The Fitzpatrick Company Clean-in-place mill housing

Also Published As

Publication number Publication date
CA2797465A1 (fr) 2011-11-03
EP2563516A2 (fr) 2013-03-06
HRP20140826T1 (hr) 2014-12-05
US20130206880A1 (en) 2013-08-15
US8820667B2 (en) 2014-09-02
WO2011134624A2 (fr) 2011-11-03
ES2480971T3 (es) 2014-07-29
WO2011134624A3 (fr) 2012-05-31
SI2563516T1 (sl) 2014-09-30
DE102010018419A1 (de) 2011-10-27
EP2563516B8 (fr) 2014-08-20

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