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EP3573762A1 - Broyeur agitateur - Google Patents

Broyeur agitateur

Info

Publication number
EP3573762A1
EP3573762A1 EP18710995.4A EP18710995A EP3573762A1 EP 3573762 A1 EP3573762 A1 EP 3573762A1 EP 18710995 A EP18710995 A EP 18710995A EP 3573762 A1 EP3573762 A1 EP 3573762A1
Authority
EP
European Patent Office
Prior art keywords
stirring shaft
grinding
section
short
shaft section
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
EP18710995.4A
Other languages
German (de)
English (en)
Other versions
EP3573762B1 (fr
Inventor
Horst Pausch
Gerhard Kolb
Holger Moeschl
Udo Enderle
Witali Sudermann
Lars-Peter Weiland
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.)
Netzsch Feinmahltechnik GmbH
Original Assignee
Netzsch Feinmahltechnik 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 Netzsch Feinmahltechnik GmbH filed Critical Netzsch Feinmahltechnik GmbH
Publication of EP3573762A1 publication Critical patent/EP3573762A1/fr
Application granted granted Critical
Publication of EP3573762B1 publication Critical patent/EP3573762B1/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
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/163—Stirring means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/21—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by their rotating shafts
    • B01F27/212—Construction of the shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • 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
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • 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
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
    • B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
    • B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
    • 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
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C2017/165—Mills in which a fixed container houses stirring means tumbling the charge with stirring means comprising more than one agitator

Definitions

  • the invention relates to an agitator mill with a horizontally arranged grinding container, which has a cylindrical inner wall, with a stirring shaft arranged in the grinding container and can be driven about a common central longitudinal axis in a drive rotational direction, with a grinding space bounded by the inner wall and the stirring shaft. wherein at a first end of the grinding chamber, a grinding stock inlet opens into this,
  • a Mahlgut- outlet opens out of a second end of the grinding container opposite the first end of the grinding container, wherein the stirring shaft adjacent the Mahlgut inlet, a first Mahlraum area bounding the first stirring shaft portion of smaller diameter D24 and the Mahlgut- outlet adjacent, a second Mahlraum-area limiting second Rhakwellen- section of larger diameter D25, wherein: D25> D24, wherein the second Rfordwellen section has a cavity which is closed by a bottom opposite the first R industrialwellen-section and in a arranged with the regrind outlet, arranged at a distance from the bottom sieve, and
  • the longitudinal slots forming part of a separating device in the second stirring shaft section extend slightly into the first stirring shaft section of smaller diameter. They end approximately in a radial plane with the part of the separator forming screen.
  • the grinding stock flows through the grinding container from the grinding stock inlet to the opposite put the end of the grinding chamber and then enters together with the entrained by the Mahlgutströms Mahlos stressesn in the cavity within the second Rlickwellen- section. Since the cavity is substantially cylindrical, the webs delimited by the slots in the end region of the agitator shaft are larger than in the region of the cover of the sieve.
  • the invention is therefore based on the object, a stirring mill according to the preamble of claim 1 so on to form a substantially uniform distribution of Mahltospian in the grinding chamber while avoiding compression is achieved.
  • This object is achieved according to the invention in that the first stirring shaft section has at least one short-circuit channel which penetrates the bottom of the cavity and connects the first grinding chamber region to the cavity.
  • the at least one short-circuit channel formed in the first stirring shaft section is at least 90% of the length in the direction of the center-longitudinal axis over 10 to 100%, or at least 70%, or at least 80% L24 of the first stirrer shaft section extends, then can be achieved that the supplied in the short circuit of the separator millbase is already freed to the desired extent of auxiliary grinding bodies and coarse millbase particles. This effect is achieved in a particularly pronounced manner if the at least one short-circuit channel has an inner diameter D39 which is smaller than the inner diameter D27 of the cavity.
  • Figure 2 shows the grinding container of the agitator mill in the vertical
  • Figure 4 shows a cross section through the grinding container according to the
  • FIG. 5 is a vertical longitudinal section of an embodiment of a grinding container modified relative to FIG. 2;
  • Section line VI-VI in Figure 5 7 shows a cross section through the grinding container according to the section line VII-VII in Figure 5,
  • FIG. 8 is a vertical longitudinal section of an embodiment of a grinding container modified relative to FIG. 5;
  • a horizontal agitator mill has a machine frame 1 which is supported on the bottom 2.
  • a drive motor 3 is arranged, which is coupled to a drive shaft 5 by means of a belt drive 4.
  • a horizontal grinding container 6 is attached to this.
  • This has a first grinding container lid 7, which is mounted on the machine frame 1 and in which the drive shaft 5 is rotatably supported by means of rolling bearings 8.
  • the grinding container 6 furthermore has a cylindrical inner wall 9, which is surrounded by a tempering jacket 10, into which temperature control means, as a rule coolant, are introduced through an inlet 11 and discharged through a drain 12.
  • the grinding container 6 is closed by a second grinding container lid 13.
  • the connection between each of the inner wall 9 together with tempering jacket 10 with the first cover 7 and the second cover 13 takes place By means of flanges 14, 15 and associated screw 16.
  • a grinding chamber 17 is limited, in which a trained in the first lid 7 Mahlgut inlet 18 opens and from the one in the second Cover 13 arranged Mahlgut- outlet 19 opens.
  • a stirring shaft 22 is arranged, which is non-rotatably connected to the drive shaft 5 and of the latter about a common horizontal central longitudinal axis 23 of the drive shaft 5, grinding chamber 17 and stirring shaft 22 can be driven.
  • the stirring shaft 22 is not stored in the grinding chamber 17; So it is mounted over your coupling to the drive shaft 5 on the fly.
  • the agitator shaft 22 has two sections, namely, subsequent to the grinding stock inlet 18, a first stirring shaft section 24 with an outer diameter D24 and, subsequently, a second stirring shaft section 25 with an outer diameter D25. The following applies:
  • a transition portion 26 between the first smaller diameter shaft portion D 24 and the second larger diameter shaft portion D 25 is associated with the first agitator shaft portion 24.
  • the first stirring shaft section 24 is designed essentially as a full material section, while the second stirring shaft section 25 has a cavity 27 which is open towards the second cover 13.
  • the length L27 of the cavity 27 toward the first stirring shaft portion 24 is less than the length L25 of the second stirring shaft portion 25.
  • the second stirring shaft section 25 faces outward open parallel to the axis 23 extending longitudinal slots 28, which - as Figure 4 can be removed - relative to the drive-rotational direction 29 of the agitator shaft 22 are made radially outward against the direction of rotation 29.
  • the second Rfordwellen- section 25 is closed at its the second lid 13 adjacent end by means of an end-ring 30, which thus also closes the longitudinal slots 28 in the direction parallel to the axis 23.
  • a separating device 31 is formed concentrically with the axis 23, which consists of the longitudinal slots 28 and a cylindrical sieve 32, which is closed at the front end to the first stirring shaft section 24 by means of a cover 33 and the its other end is held in a base 34 which is fixed to the second cover 13 and the Mahlgut- outlet 19 has.
  • the sieve 32 extends into the vicinity of the end of the cavity 27 adjacent to the first stirring shaft section 24.
  • the stirring shaft 22 is equipped with stirring elements 35, 36 in the form of stirring pins, which are each mounted at a circumferential distance of 90 degrees to each other on the circumference of the stirring shaft 22 and radially to the axis 23.
  • stirring elements 35, 36 arranged in a plane perpendicular to the axis 23 in each case.
  • the stirring elements 35 in the first grinding chamber region 37 surrounding the first stirring shaft section 24 are longer than the stirring elements 36 in the second grinding chamber region 38 surrounding the second stirring shaft section 25. This results from the fact that the inner diameter D24 of the first grinding chamber region 37 is smaller than the inner diameter D25 of the second grinding chamber region 38 and that all the stirring elements 35, 36 end at the same distance from the inner wall 9 of the grinding container 6.
  • the circumferential distance of the stirring elements 35 may be less than 90 °. In such a case, if appropriate, no longer two but only one longitudinal slot 28 are then formed between two stirring elements 35 adjacent to one another in a circumferential plane.
  • Diameter D25 short-circuit channels 39 are formed, which connect the first stirring shaft section 24 surrounding first Mahlraum area 37 with the cavity 27. These short-circuit channels 39 open into the longitudinal slots 28, as can be seen in FIG. 2 and FIG. 4, and are located in the longitudinal slots 28 and are located relative to the flow direction 40 of the grinding stock.
  • the short-circuit channels 39, 39 ' in the same manner as the longitudinal slots 28 - seen from the central longitudinal axis 23 to the outside - against the direction of rotation 29 made. They thus open axially into the longitudinal slots 28. Furthermore, the short-circuit channels 39, 39 '- at least in the transition region 26 - an inner diameter D39, D39', which is smaller than the inner diameter D27 of the cavity 27, so that the short-circuit channels 39, 39 'directly through the bottom 41st of the cavity 27 open into this.
  • the inner diameter D39, D39 ' is slightly larger than the outer diameter D33 of the cover 33 of the screen 32.
  • FIGS. 8 to 10 differs from that according to FIGS. 5 to 7 only in that the inner diameter D39 "of the short-circuit channels 39" is smaller than the outer diameter D33 of the cover 33 of the screen 32 the embodiment of Figures 1 to 4 be the case.
  • the grinding chamber 17, that is, the space located between the inner wall 9 and the stirring shaft 22 is filled to about 90% with only indicated Mahlos stressesn 42.
  • the diameter D42 of the grinding auxiliary bodies 42 is in the range of 0.03 mm to 0.8 mm and preferably in the range of 0.03 mm to 0.4 mm.
  • the grinding stock to be ground or dispersed is pumped through the grinding stock inlet 18 into the grinding container 6 and flows under intense stress by the stirring elements 35, 36 and the Mahltos stresses 42 the grinding chamber 17 in the flow direction 40, wherein the average flow rate in the first Mahlraum area 37 is lower than in the second Mahlraum area 38, because of the different large free cross sections of these grinding chamber areas 37, 38.
  • part of the material to be ground flows through the short-circuit channels 39 directly into the cavity 27 and leaves the grinding chamber 17 through the sieve 32, provided that this material has a fineness which passes through the sieve 32 leaves.
  • the millbase not removed by the sieve 32 is centrifuged off through the longitudinal slots 28 into the second grinding chamber area 38.
  • Another part of the material to be ground is conveyed through the second grinding chamber region 38 with further intensive application by the auxiliary grinding bodies 42 and flows around the end ring 30 into the cavity 27 between the sieve 32 and the second stirring shaft section 25, where the auxiliary grinding bodies 42 and coarse Mahlgutpenie more pronounced than fine Mahlgut particles corresponding to the outwardly directed flow arrows 45 are thrown off through the longitudinal slots 28 in the second grinding chamber area 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crushing And Grinding (AREA)

Abstract

L'invention concerne un broyeur agitateur qui comporte une cuve de broyage (6) agencée horizontalement et un arbre d'agitation (22) disposé dans cette cuve et pouvant être entraîné en rotation. L'arbre d'agitation (22) présente au voisinage d'une entrée (18) pour le produit à broyer une première partie (24) d'un plus petit diamètre D24 et une deuxième partie (25) voisine d'une sortie (19) pour le produit broyé et d'un diamètre D25 plus grand, dans lequel est formé un dispositif de séparation (31). Des conduits de court-circuit (39') menant dans le dispositif de séparation (31) sont formés dans la première partie (24) de l'arbre d'agitation.
EP18710995.4A 2017-01-30 2018-01-30 Broyeur agitateur Active EP3573762B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017201418.0A DE102017201418B3 (de) 2017-01-30 2017-01-30 Rührwerksmühle
PCT/DE2018/000015 WO2018137731A1 (fr) 2017-01-30 2018-01-30 Broyeur agitateur

Publications (2)

Publication Number Publication Date
EP3573762A1 true EP3573762A1 (fr) 2019-12-04
EP3573762B1 EP3573762B1 (fr) 2023-09-20

Family

ID=61376864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18710995.4A Active EP3573762B1 (fr) 2017-01-30 2018-01-30 Broyeur agitateur

Country Status (10)

Country Link
US (1) US11318475B2 (fr)
EP (1) EP3573762B1 (fr)
KR (1) KR102262780B1 (fr)
CN (2) CN206951328U (fr)
DE (1) DE102017201418B3 (fr)
ES (1) ES2965736T3 (fr)
HU (1) HUE064447T2 (fr)
PL (1) PL3573762T3 (fr)
RU (1) RU2744212C2 (fr)
WO (1) WO2018137731A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020103848A1 (de) * 2020-02-14 2021-08-19 Netzsch-Feinmahltechnik Gmbh Temperiertes Bauteil und Verfahren zur Herstellung eines temperierten Bauteils
KR20220076666A (ko) * 2020-12-01 2022-06-08 주식회사 엘지에너지솔루션 이차전지 재료 분산용 수평형 비드밀 및 도전재 분산방법
CN113856841B (zh) * 2021-09-23 2025-02-28 深圳市叁星飞荣机械有限公司 砂磨机的循环研磨机构和砂磨机
CN115041495B (zh) * 2022-06-13 2024-01-23 中交二公局第七工程有限公司 可快速安装、温度监控及泄漏监测的餐厨废弃物处理设备
DE102022125879A1 (de) * 2022-10-07 2024-04-18 Netzsch-Feinmahltechnik Gmbh Rührwerksmühle
DE102022130384A1 (de) * 2022-11-17 2024-05-23 Netzsch-Feinmahltechnik Gmbh Rührwerksmühle mit Korb mit Verdickung

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938171C1 (fr) * 1988-12-30 1991-01-03 Erich Netzsch Gmbh & Co Holding Kg, 8672 Selb, De
KR950007586A (ko) * 1993-08-23 1995-03-21 배순훈 리모콘전압 검출표시장치
DE4419919C1 (de) * 1994-06-07 1995-02-23 Netzsch Erich Holding Rührwerksmühle
DE10064828B4 (de) 2000-12-22 2007-07-12 Erich Netzsch Gmbh & Co Holding Kg Rührwerksmühle
RU22892U1 (ru) * 2001-10-30 2002-05-10 Роганин Сергей Павлович Горизонтальная бисерная мельница
DE10241924B3 (de) * 2002-09-10 2004-05-27 Netzsch-Feinmahltechnik Gmbh Rührwerksmühle mit kühlbarer Rührwelle
EP1468739B1 (fr) * 2003-04-15 2008-03-19 Willy A. Bachofen AG Broyeur agitateur à billes
WO2009024158A1 (fr) * 2007-08-17 2009-02-26 Bühler AG Broyeur agitateur
DE102010049827A1 (de) * 2010-10-27 2012-05-03 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle
DE102010053484A1 (de) * 2010-12-04 2012-06-06 Netzsch-Feinmahltechnik Gmbh Dynamisches Element für die Trenneinrichtung einer Rührwerkskugelmühle
JP5921172B2 (ja) * 2011-12-09 2016-05-24 アシザワ・ファインテック株式会社 横型乾式粉砕機
DE102013111762A1 (de) 2013-07-08 2015-01-08 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle mit Axialkanälen
CN204074173U (zh) * 2013-12-31 2015-01-07 占天义 搅拌式研磨装置
CN204816705U (zh) * 2015-06-29 2015-12-02 广州派勒机械设备有限公司 具有双重分离系统的超级砂磨机

Also Published As

Publication number Publication date
US20200324297A1 (en) 2020-10-15
HUE064447T2 (hu) 2024-03-28
CN110198787A (zh) 2019-09-03
RU2744212C2 (ru) 2021-03-03
US11318475B2 (en) 2022-05-03
CN206951328U (zh) 2018-02-02
PL3573762T3 (pl) 2024-03-04
KR102262780B1 (ko) 2021-06-09
CN110198787B (zh) 2021-02-26
DE102017201418B3 (de) 2018-06-28
WO2018137731A1 (fr) 2018-08-02
RU2019126436A (ru) 2021-03-01
ES2965736T3 (es) 2024-04-16
KR20190109500A (ko) 2019-09-25
EP3573762B1 (fr) 2023-09-20
RU2019126436A3 (fr) 2021-03-01
BR112019013933A2 (pt) 2020-02-11

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