EP2391454A1 - Broyeur de laboratoire muni de passages tournants pour le bol de broyage à alimenter en fluide - Google Patents

Broyeur de laboratoire muni de passages tournants pour le bol de broyage à alimenter en fluide

Info

Publication number
EP2391454A1
EP2391454A1 EP10701818A EP10701818A EP2391454A1 EP 2391454 A1 EP2391454 A1 EP 2391454A1 EP 10701818 A EP10701818 A EP 10701818A EP 10701818 A EP10701818 A EP 10701818A EP 2391454 A1 EP2391454 A1 EP 2391454A1
Authority
EP
European Patent Office
Prior art keywords
laboratory mill
mill according
rotary feedthrough
movable part
grinding
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.)
Granted
Application number
EP10701818A
Other languages
German (de)
English (en)
Other versions
EP2391454B1 (fr
Inventor
Stefan Reinhold MÄHLER
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.)
Retsch GmbH
Original Assignee
Retsch 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 Retsch GmbH filed Critical Retsch GmbH
Publication of EP2391454A1 publication Critical patent/EP2391454A1/fr
Application granted granted Critical
Publication of EP2391454B1 publication Critical patent/EP2391454B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
    • B02C17/08—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with containers performing a planetary movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting

Definitions

  • the invention relates to a laboratory mill with at least one rotary movement about its central axis performing Mahlbecher, wherein the grinding bowl is connected to at least one line for the passage of a liquid or gaseous medium.
  • Such a laboratory mill is known, for example, in the form of a vibrating mill or a planetary ball mill having a transmission ratio of 1: 1.
  • a laboratory mill is known, for example, in the form of a vibrating mill or a planetary ball mill having a transmission ratio of 1: 1.
  • the liquid nitrogen must be continuously supplied to the moving grinding bowl and removed from it.
  • the grinding bowls with the liquid or gaseous medium, for example nitrogen, by means of suitably arranged flexible hoses.
  • the hoses are attached directly to the Mahlbecherhalterung, in which case a fluidic connection between the Mahlbecherhalterung and the grinding bowl used.
  • gases are released during the comminution of the ground material, which may be the subject of further analysis. These gases must therefore be continuously removed from the grinding bowl and it must be compensated for the extracted volume by a corresponding gas supply.
  • the invention provides in its basic idea that the conduit is guided via a rotary feedthrough with a stationary part and a moving part coupled to the movement of the grinding bowl, wherein the stationary part has at least one connection for a fixed line and the movable part at least one connection for having a leading to Mahlbecher line.
  • the invention has the advantage that the connection of the grinding bowl with the supply or discharge line for the medium can be made via a substantially rigid conduit system, because the relative movement between the movable grinding bowl and the stationary supply or disposal system on the relative to stationary part movable movable part of the intermediate rotary feedthrough is compensated.
  • the respective movements are reduced within the rotary feedthrough to a smallest possible radius, so that because of the so minimized relative speed and relative movement between the stationary and the movable part of the rotary feedthrough a contacting seal can be used, which is located between the mutually aligned bore sections in the stationary as in the moving part the rotary feedthrough is effective.
  • both in the stationary part and in the movable part of the rotary feedthrough bores for the passage of the medium through the rotary feedthrough are formed and the holes in the stationary part and in the movable part each having a mutually aligned, extending in the axis of movement of the movable part section
  • the mutually aligned portions of the holes formed in the rotary feedthrough are each sealed between the stationary part and the movable part against each other.
  • a protruding proboscis is formed, which engages positively in a formed in the stationary part receptacle, wherein between the trunk and receiving a seal is arranged.
  • laboratory mills include a plurality of grinding bowls, according to one embodiment of the invention it is provided that correspondingly a plurality of grinding bowls can be provided, to each of which then a rotary feedthrough is assigned.
  • the grinding bowls arranged on the laboratory mill Mahlbecherhalteronne provides that the at least one line connected to the Mahlbecherhalterung and the Mahlbecherhalterung is fluidly connected to the grinding bowl. Accordingly, then the rotary feedthrough of grinding bowl holder is assigned. As far as the grinding bowls can perform different movements in different types of laboratory mills, according to one embodiment of the invention, it is provided that the grinding bowls perform only a pitch circle movement.
  • the relative movement of the movable part of the rotary feedthrough is limited to the stationary part, may be provided in such an embodiment of the laboratory mill, that the formed on the stationary part of the terminals with the terminals on the movable part, is connected via flexible line sections ,
  • the grinding bowls execute a rotational movement in the associated holder, wherein accordingly a rotational movement has to be set up for the movable part of the rotary feedthrough.
  • the grinding bowls rotate with their central axis about a device axis spaced therefrom, wherein each rotation axis is in each case associated with a rotary feedthrough.
  • a planetary mill is characterized in which the grinding cup concentrically rotates about the central axis of the planetary disc, while at the same time this planetary disc rotates about the center of the sun gear. In such superimposed circular movements then at least one rotary union must be used per rotation center.
  • the medium is a liquid nitrogen or that the liquid or gaseous medium used is tempered, for example to produce a heating or cooling effect for the grinding bowl, or that the medium consists of a special analysis gas.
  • the medium is a liquid nitrogen or that the liquid or gaseous medium used is tempered, for example to produce a heating or cooling effect for the grinding bowl, or that the medium consists of a special analysis gas.
  • Fig. 1 is set up for operation with liquid nitrogen
  • FIG. 2 shows the construction of a laboratory mill designed as a vibrating mill with a grinding bowl and associated rotary feedthrough in a perspective overall view
  • FIG. 3 shows the embodiment of the rotary feedthrough according to FIG. 2 in an enlarged view
  • the laboratory mill 10 shown only schematically, has a grinding bowl 11 to which a supply line 12 and a return line 13 for supplying the grinding bowl 11 are connected with liquid nitrogen.
  • the lines 12 and 13 are in view of the movement of the Mahlbechers 1 1 via a rotary feedthrough 14 guided with a stationary part 15 and a movable part 16.
  • the stationary part 15 consists of two, the movable part 16 between them enclosing parts 15a, 15b , which are supported by a not shown here, to be connected to the housing of the laboratory mill 10 holder to each other.
  • the movable part 16 two holes 17 a and 17 b are formed, wherein the bore 17 a to the feed line 12 and the bore 17 b are connected to the return line 13.
  • the bores 17a and 17b bend outward by 90 degrees and here they find a connection to boreholes 18a and 18b respectively formed in the stationary parts 15a and 15b the mutually aligned line sections of the bores 17a and 18a or 17b and 18b are arranged in the axis of movement of the movable part 16 relative to the stationary part 15.
  • the supply line 19 is connected, which comes from a reservoir 21 for the liquid nitrogen, wherein in the supply line 19 corresponding valves 20 are turned on with control and safety functions.
  • the reservoir 21 is liquid nitrogen with a liquid level 22 at.
  • a return line 23 is connected, which is guided to a collecting vessel 24, in which also liquid nitrogen with a liquid level 25 is.
  • FIG. 1 The design of the corresponding rotary feedthrough 14 in conjunction with the laboratory mill 10 can be seen in FIG.
  • the supply line 19 is shown for the liquid nitrogen, which is connected via a correspondingly arranged valve 20 to a port 1 18a of the stationary part 15 of the rotary feedthrough 14.
  • a holder 30 connected to the housing of the laboratory mill 10. Accordingly, from the stationary part 15b or from its connection 1 18b, the return line 23 to the collecting vessel 24 from.
  • the Mahlbecherhalterung 26 is attached to a rotatably mounted rocker 27 and performs an oscillating movement about the movement axis 28;
  • the grinding-body movement is generated in the interior of a grinding bowl, which is not shown in detail and is inserted into the grinding bowl holder 26, which is fluidically connected to the grinding bowl holder 26.
  • the rotary feedthrough 14 is arranged so that its center or the mutually aligned bore portions 17a, 18a and 17b, 18b are aligned with the extended movement axis 28.
  • the liquid nitrogen is passed via the supply line 19 and the switching valve 20 and via the port 1 18a in the rotary feedthrough 14 and leaves the rotary feedthrough 14 via the connected to the terminal 1 17a of the movable member 16 feed line 12.
  • the nitrogen flow is to Mahlbecherhalterung 26 and from there back to the moving part 16 of the rotary feedthrough 14 and finally passes through the stationary part 15 of the rotary feedthrough 14 and the connected return line 23 into the collecting vessel 24.
  • the switching valve 20 is closed. After so much nitrogen has evaporated that the sensor is no longer wetted with, the switching valve 20 is opened again.
  • the movable part 16 in each case engages a radially protruding proboscis 32 in a receptacle 33 formed on the two stationary parts 15a and 15b, a radial sealing ring 34 being arranged in the receptacle 33, which holds the trunk 32 of the movable part 16 encloses and with its sealing lip the stationary part 15 a and 15 b against the movable part 16 seals.
  • this seal is formed in a radial arrangement, the seal can also be made on the front side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne un broyeur de laboratoire comprenant au moins un bol de broyage effectuant un mouvement de rotation autour de son axe central, le bol de broyage étant raccordé à au moins une conduite pour le passage d'un fluide liquide ou gazeux. Selon l'invention, la conduite passe par un passage tournant (14) comportant une partie stationnaire (15) et une partie mobile (16) couplée au mouvement du bol de broyage (11), la partie stationnaire (15) comportant au moins un raccord (118a, 118b) pour une conduite fixe et la partie mobile (16) comportant au moins un raccord (117a, 117b) pour une conduite menant au bol de broyage (11).
EP10701818.6A 2009-01-28 2010-01-26 Broyeur de laboratoire muni de passages tournants pour le bol de broyage à alimenter en fluide Active EP2391454B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009006500 2009-01-28
PCT/EP2010/000427 WO2010086132A1 (fr) 2009-01-28 2010-01-26 Broyeur de laboratoire muni de passages tournants pour le bol de broyage à alimenter en fluide

Publications (2)

Publication Number Publication Date
EP2391454A1 true EP2391454A1 (fr) 2011-12-07
EP2391454B1 EP2391454B1 (fr) 2019-06-12

Family

ID=42144787

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10701818.6A Active EP2391454B1 (fr) 2009-01-28 2010-01-26 Broyeur de laboratoire muni de passages tournants pour le bol de broyage à alimenter en fluide

Country Status (6)

Country Link
US (1) US8720806B2 (fr)
EP (1) EP2391454B1 (fr)
JP (1) JP2012516236A (fr)
CN (1) CN102369061B (fr)
RU (1) RU2501607C2 (fr)
WO (1) WO2010086132A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103861696A (zh) * 2012-12-12 2014-06-18 江苏森美铝颜料有限公司 一种球磨机的加气系统
CN103861699A (zh) * 2012-12-12 2014-06-18 江苏森美铝颜料有限公司 一种增压出料系统
US10518269B2 (en) 2017-10-13 2019-12-31 SPEX SamplePrep, LLC Grinding mill with securing frame
DE102020101523A1 (de) 2019-09-06 2021-03-11 Retsch Gmbh Laborschwingmühle
DE102020101565A1 (de) 2019-09-06 2021-03-11 Retsch Gmbh Labormühle
DE102020119489A1 (de) 2020-02-07 2021-08-12 Retsch Gmbh Gerätemodul für ein Laborgerät und Verfahren zur Temperierung eines Laborgerätes
RU2760394C1 (ru) * 2020-11-23 2021-11-24 Федеральное государственное бюджетное образовательное учреждение высшего образования «Пензенский государственный университет» (ФГБОУ ВО «Пензенский государственный университет») Способ измельчения материалов в центробежной планетарной мельнице

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FR1599134A (fr) * 1967-12-22 1970-07-15
JPS479147Y1 (fr) * 1968-10-23 1972-04-07
GB1265735A (fr) 1969-10-30 1972-03-08
SU638655A1 (ru) * 1977-07-29 1978-12-25 Центральный научно-исследовательский институт бумаги Центробежна мельница
JPH0340934Y2 (fr) * 1986-01-18 1991-08-28
SU1835697A1 (ru) * 1989-12-27 1995-08-20 Центральный научно-исследовательский геологоразведочный институт цветных и благородных металлов Мельница шаровая лабораторная
GB2257379B (en) * 1991-07-09 1995-04-19 Ecc Int Ltd Comminution in a planetary mill
DE10002054A1 (de) 2000-01-19 2001-07-26 Reiner Weichert Vorrichtung und Verfahren zur Ultrafeinmahlung fester Stoffe auf Partikelgrößen im Nanometerbereich
JP2002172339A (ja) * 2000-12-05 2002-06-18 Sumitomo Heavy Ind Ltd 大容量竪型ボールミルの冷却装置
RU2234374C1 (ru) * 2002-11-19 2004-08-20 Закрытое акционерное общество "Биофит" Барабанная мельница
JP4445713B2 (ja) * 2003-04-10 2010-04-07 中央化工機商事株式会社 ナノレベルの超微粒子を製造するための水冷式遊星運動型ボールミル粉砕機およびその温度制御方法
CN2902144Y (zh) * 2006-03-10 2007-05-23 吕达 全自动豆浆机
CN101239336B (zh) * 2008-03-07 2011-04-27 华南理工大学 一种等离子体辅助搅拌球磨装置

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Title
See references of WO2010086132A1 *

Also Published As

Publication number Publication date
JP2012516236A (ja) 2012-07-19
US20110303776A1 (en) 2011-12-15
RU2011130596A (ru) 2013-01-27
CN102369061B (zh) 2014-01-29
EP2391454B1 (fr) 2019-06-12
RU2501607C2 (ru) 2013-12-20
WO2010086132A1 (fr) 2010-08-05
CN102369061A (zh) 2012-03-07
US8720806B2 (en) 2014-05-13

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