EP2578306A1 - Mélangeur avec dispositif de broyage et de dispersion - Google Patents

Mélangeur avec dispositif de broyage et de dispersion Download PDF

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Publication number
EP2578306A1
EP2578306A1 EP12184925.1A EP12184925A EP2578306A1 EP 2578306 A1 EP2578306 A1 EP 2578306A1 EP 12184925 A EP12184925 A EP 12184925A EP 2578306 A1 EP2578306 A1 EP 2578306A1
Authority
EP
European Patent Office
Prior art keywords
shaft
mixer
chopper
knives
mixing
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.)
Withdrawn
Application number
EP12184925.1A
Other languages
German (de)
English (en)
Inventor
Peter Illing
Alwin Bökenföhr
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.)
Gebrueder Loedige Maschinenbau GmbH
Original Assignee
Gebrueder Loedige Maschinenbau 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 Gebrueder Loedige Maschinenbau GmbH filed Critical Gebrueder Loedige Maschinenbau GmbH
Publication of EP2578306A1 publication Critical patent/EP2578306A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • B02C18/18—Knives; Mountings thereof
    • 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
    • B01F27/05—Stirrers
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to 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
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • 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
    • B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B01F33/833—Devices with several tools rotating about different axis in the same receptacle
    • 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
    • B01F33/83611—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by cutting

Definitions

  • the invention relates to a mixer for industrial applications, in particular a horizontal mixer with a mixing tool and at least one crushing and dispersing device, also called chopper.
  • the invention further relates to a knife for a chopper.
  • a mixer according to the present invention comprises a mixing container with a generally cylindrical interior.
  • the one or more mixing tools are regularly attached to a shaft one or more blades such as plowshares, Becker blades or stud blades.
  • the rotatable shaft usually runs centrally and parallel to the jacket through the mixing container.
  • a chopper is a tool usually provided with a plurality of knives, the shaft of which projects into the mixing container and which is able to rotate at high speeds compared to the shaft with the mixing blades attached thereto.
  • the soul of a chopper is usually stored on one side of a wall of the mixing container and reaches into the mixing container.
  • the load of the one or more knives also transfers to the shaft to which the knives are mounted so that the shaft can experience either some deflection or little lateral deflection after heavy loading. This can lead to damage.
  • a horizontal mixer of the type according to the invention which comprises a shaft with mixing blades attached thereto and a chopper, the shaft of the chopper on both Ends is mounted and the shaft of the chopper leads on one side into the housing of the mixing container and on another side of the housing out again.
  • the object of the present invention may be designed as described so far. This can in particular also in the from the EP 0722770 A1 be known manner, as far as not deviations are described below.
  • a knife further comprises the features of the independent claim.
  • a mixer in particular a horizontal mixer with at least one mixing tool and at least one chopper is provided.
  • the shaft of the chopper is mounted on two sides to avoid damage under high load.
  • the one or more knives of the chopper are designed in two parts, that they are removable from the shaft. If necessary, these can therefore be replaced without having to remove the shaft of the chopper.
  • the one or more knives are preferably attached by positive engagement on the shaft in order to keep them particularly reliable. Vibrations and the like can then basically not cause the connection can be solved.
  • spacer rings between two blades, which contribute to the positive connection.
  • one or more support rings can contribute to the positive connection.
  • Spacers are regularly required to maintain a distance between blades sure. Vortellhaft therefore such components are needed in addition to the positive connection used to keep the number of parts low.
  • Spacers and support rings are separate components, which are therefore not firmly connected to a shaft. These can basically be moved along a shaft which is passed through the spacers and support rings, as long as such displacement is not prevented by other components. Such a shift is prevented for example by Seegerringe.
  • a pressing device by which a contact pressure between a knife and a spacer ring can be generated or generated.
  • a contact pressure between a knife and a spacer ring can be generated or generated.
  • One or more screws are advantageously provided for generating the contact pressure. It can be generated in a simple manner, a high contact pressure.
  • the invention relates to such mixers which have a plurality of choppers to comminute mix.
  • the waves of these chopper are stored on both sides.
  • a bearing could be supported on side walls of the mixer housing via appropriate linkage.
  • the shaft of each chopper is led out on one side into the mixer housing and on another side again. This makes it possible to provide each bearing outside the mixer housing.
  • Each bearing is separated from the interior of the mishcer by a seal in this embodiment. A drive for such a wave can then be arranged without problems outside of the interior.
  • each knife of the chopper is preferably oriented according to the distances to the adjacent container wall. This results in a plan view of a section (with respect to the knife) seen usually an ellipse shape.
  • mixed material is reliably detected, which is located at the bottom, when a corresponding chopper is also disposed adjacent to the ground.
  • the product bed is predominantly not at the lowest possible range of a mixing container, because of the mixing tools, the mix is conveyed in the running direction of the mixing tool. Therefore, it is also common to arrange a chopper offset to the deepest area in the mixer housing and that according to the direction of rotation of the one or more mixing tools.
  • the shaft of each chopper still runs horizontally adjacent to the deepest ground. It has been found that nevertheless usually the blades of a chopper are completely in the mix and no disadvantages are to be expected. On the other hand, there are constructive advantages bel the support of the engine when the shaft is horizontal. In one embodiment, therefore, the motor for a chopper with horizontally extending shaft is additionally supported and is therefore not held only by the shaft.
  • the one or more mixing tools are arranged relative to the one or more choppers so that they always have a distance from each other, wherein distances are advantageously kept low.
  • Mixing tools advantageously have a shape such that they promote mixing material in the direction of chopper.
  • a positive connection which is supported by a non-positive connection, so as to provide a particularly stable hold.
  • the contact pressure is provided by a plurality of screws which are housed in the support ring. These screws are parallel to the shaft. As a result, a contact pressure can be exerted.
  • the knives may be rectangular in plan view or taper towards the free ends. These free ends may be formed by peaks, edges or bulges.
  • An opening for the passage of a shaft may be square, elliptical or polygonal.
  • the cross-section of the shaft then has a matching shape so that the blades reliably rotate together with the shaft. Since this is not guaranteed only due to the shape of a circular diameter of the opening together with wave cross-section, a circular diameter is indeed possible, but less preferable.
  • the knives are preferably provided with a wear protection, ie a hardened layer in order to increase the longevity.
  • the mixer can be designed as a batch mixer or as a continuous mixer.
  • the mixer may be a single-shaft mixer having only one shaft with one or more blades attached thereto.
  • the mixer can also be more wavy. It may, for example, be a double-shaft mixer comprising two shafts with blades attached thereto.
  • the mixer may be a vertical mixer, which thus comprises a vertical mixing axis.
  • the mixing container may be cylindrical or, for example, conical. The product space, so the mixing container can be designed for atmospheric pressure, negative pressure or pressure. There may be more than one comminuting and dispersing device in the longitudinal direction of the mixing-machine axis.
  • the substances treated in the mixer can be reliably treated by the comminution and dispersing device so that the substances leave the mixer without lumps.
  • the comminution and dispersing apparatus used in a mixer is used for dispersing liquid and pasty products.
  • the comminution and dispersing device is used as an auxiliary agent in fine and coagulum agglomeration by the dispersing effect thus produced.
  • the shaft of a chopper preferably runs transversely to the shaft with the mixing blades attached thereto in order to achieve good results.
  • a bearing provided with bearings bearing block can be provided.
  • FIG. 1 shows a mixer 1 and that is a section through a cylindrical shell 2 of the mixing container.
  • a shaft 3 Centrally, ie centrally leads through the mixing container through a shaft 3, which is rotatably supported on both sides and can be rotated by a drive.
  • the drive is located outside of the mixing tank and is in the FIG. 1 Not shown.
  • the shaft 3 leads out through both end walls of the mixing container and is preferably mounted outside of the mixing container. This advantageously ensures that are not in the mix in the warehouse.
  • the bearings for the shaft 3 are separated by seals from the interior 4 of the mixing vessel.
  • a mixing blade 5 is connected via an axis 6 with the shaft 3. Each mixing blade 5 attached to the shaft 3 is rotated together with the shaft 3.
  • a shaft 7 of a chopper Adjacent to the bottom of the mixing container, a shaft 7 of a chopper passes horizontally through opposite wall portions of the mixing container and is rotatably supported by bearings 8 outside the mixing container.
  • a sealing system 9 separates the two bearings 8 from the interior 4 of the mixing container.
  • a plurality of knives 10 which are dimensioned so that they reach close to the bottom of the container wall 2.
  • the blades 10 are shorter than the intervening blades 10 and thus have an elliptic optic in the case of the top view FIG. 1 results.
  • a spacer ring 11 first causes a corresponding distance between two adjacent blades 10 is maintained.
  • the shaft 7 is acted upon by an electric motor 12.
  • FIG. 3 shows a lateral section of the mixer 1 from FIG. 2
  • the FIG. 2 illustrates that the shaft 7 is approximately square in section. Also can two, for example, adjacent blades 10 may be aligned perpendicular to each other.
  • FIG. 3 a possible construction of such a chopper 13 is clarified in more detail.
  • the knives 10 and spacers 11 are arranged between two support rings 14.
  • Circlips 15, also known as U-rings or circlips, ensure that the support rings 14 can not be moved beyond the circlips out to the outside in the direction of bearing 8.
  • the retaining rings 15 are held by circumferential grooves 16 in the shaft 7.
  • At least one support ring 14 has one or more screws 17 which extend parallel to the shaft 7. These screws 17 can be screwed in the direction of knife 10, so as to provide anscht pressure between distance rings eleven and adjacent knives ten.
  • the knives 10, which each consist of two parts therefore can not be moved along the axis 7 due to the contact pressure. Since the two parts of each knife intermesh positively, the blades 10 are held by Formschiuss.
  • the one or more screws 17 initially exert pressure on a spacer ring 11, which in turn presses against a blade 10 adjacent to the other side.
  • FIG. 4 shows a possible embodiment of the intermeshing of two blade halves 18 of a blade 10.
  • the positive locking is u, a. reached by hook-shaped encompassing hook 19.
  • Hooks 19 of a blade half 19 are arranged on opposite sides of a preferably square opening 20, through which a shaft 7 with a corresponding square cross-section leads in the mounted state. In the assembled state, this results in a total of attachment of the blade 10 to the shaft 7 by positive engagement. This ensures that the knife 10 can be easily replaced without having to remove the shaft 7.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP12184925.1A 2011-10-05 2012-09-19 Mélangeur avec dispositif de broyage et de dispersion Withdrawn EP2578306A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011084053A DE102011084053A1 (de) 2011-10-05 2011-10-05 Mischer mit Zerkleinerungs- und Dispergiervorrichtung

Publications (1)

Publication Number Publication Date
EP2578306A1 true EP2578306A1 (fr) 2013-04-10

Family

ID=46940341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12184925.1A Withdrawn EP2578306A1 (fr) 2011-10-05 2012-09-19 Mélangeur avec dispositif de broyage et de dispersion

Country Status (2)

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EP (1) EP2578306A1 (fr)
DE (1) DE102011084053A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104289123A (zh) * 2014-09-28 2015-01-21 南京同皓干燥设备有限公司 一种犁刀式混合机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014218463A1 (de) 2014-09-15 2016-03-17 Gebrüder Lödige Maschinenbau GmbH Mischwerkeinrichtung für industrielle Anwendungen
CN112755887A (zh) * 2021-01-24 2021-05-07 江苏弘积医疗器械有限公司 一种用于生产聚氯乙烯的搅拌装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297325B (de) * 1966-11-03 1969-06-12 Draiswerke Gmbh Trogmischer mit einer Beduesungseinrichtung zum Mischen von faserartigen Stoffen
EP0359942A2 (fr) * 1988-09-17 1990-03-28 Gebr. Lödige Maschinenbau Gesellschaft mbH Machine pour le traitement des matériaux en vrac, pâteux et/ou coulants avec dispositif de préparation installé
DE19503753A1 (de) * 1994-02-08 1995-08-10 Georg Fischer Giesereianlagen Einrichtung zum Mischen und Aufbereiten von rieselfähigen Materialien
EP0722770A1 (fr) 1994-11-16 1996-07-24 Gebrüder Lödige Maschinenbaugesellschaft mbH Elément de traitement de matières solides
US6076754A (en) * 1999-04-16 2000-06-20 Littlef Ord Day, Incorporated Mixer apparatus with improved chopper assembly
DE202006002134U1 (de) * 2005-08-16 2006-05-24 Haack, Eberhard, Dr.-Ing. Vorrichtung zum Abfangen hoher Fliehkräfte bei Kuttermessern

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297325B (de) * 1966-11-03 1969-06-12 Draiswerke Gmbh Trogmischer mit einer Beduesungseinrichtung zum Mischen von faserartigen Stoffen
EP0359942A2 (fr) * 1988-09-17 1990-03-28 Gebr. Lödige Maschinenbau Gesellschaft mbH Machine pour le traitement des matériaux en vrac, pâteux et/ou coulants avec dispositif de préparation installé
DE19503753A1 (de) * 1994-02-08 1995-08-10 Georg Fischer Giesereianlagen Einrichtung zum Mischen und Aufbereiten von rieselfähigen Materialien
EP0722770A1 (fr) 1994-11-16 1996-07-24 Gebrüder Lödige Maschinenbaugesellschaft mbH Elément de traitement de matières solides
US6076754A (en) * 1999-04-16 2000-06-20 Littlef Ord Day, Incorporated Mixer apparatus with improved chopper assembly
DE202006002134U1 (de) * 2005-08-16 2006-05-24 Haack, Eberhard, Dr.-Ing. Vorrichtung zum Abfangen hoher Fliehkräfte bei Kuttermessern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104289123A (zh) * 2014-09-28 2015-01-21 南京同皓干燥设备有限公司 一种犁刀式混合机

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