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EP0722770A1 - Elément de traitement de matières solides - Google Patents

Elément de traitement de matières solides Download PDF

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Publication number
EP0722770A1
EP0722770A1 EP95117760A EP95117760A EP0722770A1 EP 0722770 A1 EP0722770 A1 EP 0722770A1 EP 95117760 A EP95117760 A EP 95117760A EP 95117760 A EP95117760 A EP 95117760A EP 0722770 A1 EP0722770 A1 EP 0722770A1
Authority
EP
European Patent Office
Prior art keywords
shaft
elements
container
machining
processing
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Withdrawn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
EP95117760A
Other languages
German (de)
English (en)
Inventor
Gerd Tewes
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 EP0722770A1 publication Critical patent/EP0722770A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B01F33/83612—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by crushing or breaking

Definitions

  • the invention relates to a processing element of solid materials, such as bulk goods and / or piles of any structure and consistency in a container, which receives the material in batches or continuously, the processing element or elements being arranged on or on a shaft, which the container in a cross-sectional plane penetrates, and the container has a second shaft mounted in the end faces of the container, which is provided with processing elements designed as a mixing body.
  • Such a processing element has become known from US 3,021,121.
  • a first shaft of this processing element which is designed as a screw conveyor, penetrates the container transversely to a second shaft, which is provided with mixing bodies.
  • the two shafts are staggered so that the machining elements of the two shafts do not interact directly.
  • Machined bulk material is transported in the vertical direction by the screw conveyor, so that it can fall again when the upper end of the screw conveyor is reached and is reprocessed by the mixing bodies.
  • processing elements known from the brochure are used to support a centrifugal unit (shaft + mixing elements) in many mixing processes.
  • Processing elements are used, among other things, to unlock verbalizations that are product, process-related and / or temporary. They crush paste additives or prevent agglomerate formation during moistening processes.
  • the need to use processing elements arises in the humidification processes for the faster distribution of liquid or paste-like components and in the mastery of agglomeration techniques and for compression processes.
  • the known processing elements according to the aforementioned brochure are installed in a continuously operating machine, which essentially consists of a horizontally mounted cylindrical container.
  • the movement behavior of the bulk material in the mixing room changes depending on the Froude number of the mixing element movement.
  • the centrifugal unit rotates slowly at first, the product is raised in the direction of rotation, so that an angle of the free product surface is established which corresponds approximately to the bulk material angle of the product.
  • particles With increasing spin speed, particles are thrown out of the material bed into the free mixing room.
  • the bed is fluidized more and more.
  • the consistency of the product ring corresponds to a compacting fill.
  • the known processing element is fastened on one side to a wall of the mixing container projecting into the mixing container in a bearing which accommodates a drive unit (motor) directed outwards.
  • the processing element protrudes into into the mixing container and is exposed to the loads of bulk goods and / or piles with regard to its filigree arrangement.
  • the load on the machining elements is also disadvantageously transferred to the shaft to which the machining element or elements are fastened, so that the shaft can experience either a certain deflection or a slight lateral deflection after a heavy load. This is possible because the mixing elements convey the material to be processed into the area of the processing elements.
  • the shaft supported on one side extends far into the interior of the container or if the mixing process is carried out in the mechanically generated fluidized bed or in the product ring or if the materials to be machined are large or very hard, the shaft with the machining elements is exposed to very large loads.
  • the known processing element cannot be used for downsizing or disintegrating clumps or other solid materials, such as those that occur during soil remediation. If the known machining element is nevertheless used for these purposes, the machining element, the shaft and / or the bearing of the shaft are loaded in such a way that there is a risk of damage to the shaft with the machining elements.
  • the present invention is therefore based on the object of further developing the known processing element in such a way that existing agglomerate formations of a bulk material are dissolved and new agglomerate formations within a container are avoided during the mixing process, and that the processing element can be used without impairment, even under the greatest loads, for processing firmly connected materials.
  • the machining elements of the first shaft are material disintegration elements, that two bearings are provided on the container, which hold the first shaft in a stable position in the region of the ends, and that the machining elements of the second shaft rotate between the machining elements of the first shaft.
  • the rotatable shaft to which the machining element according to the invention can be attached, is generally arranged between the two container walls and expediently designed such that it is easily secured against axial displacement by its position.
  • the processing element according to the invention has the further advantage that it can also be used in the processing of bulk materials resulting from soil remediation. With these bulk materials, there may be hard agglomerates of various materials between the soil particles, which should be separated after processing.
  • the material disintegration elements can have blades, knives, etc. of the most varied types.
  • the machining elements according to the invention can advantageously be used for comminuting hard and firmly connected materials or piles.
  • the possible combination of cutter head shapes and the right choice of material for the machining elements and the shaft mean that the size reduction can be further improved in a targeted manner due to the cutter head effect.
  • the editing elements and / or the cutter head shapes are made of special materials or coated with them.
  • Two rotating shafts in a container are advantageously used in combination with one another. Machining elements of one shaft can advantageously be used for mixing, while the machining elements of the other shaft advantageously serve for comminution or for disintegrating solid materials.
  • the stability and precision of the machining elements according to the invention is further increased if stiffening rings for the bearings are attached to the container and the bearings are arranged in the region of the stiffening rings.
  • the first shaft is arranged horizontally in the container or in an intermediate position between horizontally and vertically aligned.
  • the position of the processing elements according to the invention can thus be aligned with a bulk material level that is dependent on the Froude number. This measure can effectively comminute or disintegrate the bulk material and / or the pile. The shrinking process in the container and thus the shredding quality or the yield can be considerably improved with such an arrangement of the processing elements.
  • the container is designed as a horizontally aligned drum, in which the machining elements of the second shaft, viewed over the length of the drum, between the machining elements the first shaft rotate.
  • the second shaft mounted in the end faces of the drum will preferably have ploughshare blades as the processing element, which are used to mix materials.
  • the machining elements of the first shaft can be used as a shredder or chopper.
  • the processing elements on the second shaft advantageously have a mixing body which is provided in the region of the drum near the inner wall and which is connected to the second shaft by an arm.
  • the machining elements of the first shaft are arranged in an area on the first shaft which is spaced apart from the arms.
  • the machining elements of the first shaft are arranged in the area of the mixing body.
  • the processing elements of the second shaft which are designed as ploughshare blades, the processing elements of the first shaft, the material for crushing feed directly.
  • the combination of mixing and crushing is further improved.
  • first shafts can be arranged in the same or different position positions in the container or in the drum.
  • Two-sided shafts can also be combined with single-sided shafts along the container, and the shafts can be equipped with a wide variety of processing elements.
  • the shafts are driven by electric motors. If necessary, a transmission can also be provided between the shafts and the motors.
  • Fig. 1 shows a cross section of a container which is designed as a horizontally aligned drum 10.
  • a first shaft 11 penetrates the drum 10 and is held in a stable position in bearings 12 and 13.
  • the bearing 12 can accommodate a drive for the shaft 11 (not shown).
  • the rotatable first shaft 11 is arranged between the walls of the drum 10 and expediently designed such that the first shaft 11 is easily secured against axial displacement by its position.
  • the processing elements 15, which are designed as a row of knives and are firmly connected to the first shaft 11, can be located in the drum 10 Crush, compact or chop bulk goods or piles.
  • the processing elements 15 could, however, also be designed in a different way in order to process a bulk material or a pile.
  • Fig. 2 shows a cross section of a container which is designed as a drum 20.
  • a first shaft 21 penetrates the drum 20 and is held in a stable position in bearings 22 and 23.
  • the processing elements 25 which are designed as knives and are firmly connected to the first shaft 21, can shred or chop up a bulk material or pile located in the drum 20.
  • a further machining element 28 is fastened to a second shaft 26, which is mounted in the end faces of the drum 20, via an arm 27.
  • the processing element 28 is preferably designed as a ploughshare blade in order to mix the bulk material or aggregate located in the drum 20.
  • the bulk material is mixed on the one hand and on the other hand fed to the knives 25 for comminution or compaction.
  • the knives 25 on the obliquely arranged first shaft 21 extend to different degrees into the bulk material.
  • the first shaft 21 is arranged above the second shaft 26. In other embodiments, it can also run below the second shaft 26.
  • Fig. 3 shows a side view of a container which is designed as a drum 30.
  • First shafts 31a, 31b and 31c penetrate the drum 30 and are held in a stable position in bearings.
  • the processing elements 35 which are designed as knives of various types and with the first shafts are firmly connected, crushing, compacting or chopping a bulk material or pile located in the drum 30.
  • a second shaft 38 is mounted, which is provided with further processing elements 39.
  • the processing elements 39 are in turn designed as ploughshare blades in order to mix a bulk material located in the drum 30.
  • FIG. 4 shows a section along the line IV-IV of FIG. 3.
  • the first shafts 31a, 31b and 31c penetrate the drum 30 and are held in a stable position in bearings 42 to 47.
  • the processing elements 35 can crush a bulk material or pile located in the drum 30.
  • Machining elements 39 (not shown) are arranged on the second shaft 38 and can mix the bulk material located in the drum 30 when the second shaft 38 rotates in the direction of the arrow 48.
  • the first shafts 31a, 31b, 31c have different positions to the second shaft 38.
  • FIG. 5 shows a longitudinal section of a container which is only partially shown and which is designed as a drum 50.
  • First shafts 51a and 51b penetrate the drum 50 and are held in a stable position on both sides in bearings 52a, 52b and opposite bearings, not shown.
  • the processing elements 55 By rotating the first shafts 51a and 51b, the processing elements 55, which in turn are designed as knives and are firmly connected to the first shafts 51a, 51b, can comminute a bulk material or pile located in the drum 50.
  • a second shaft 58 further processing elements 60 are fastened via arms 59 in order to mix bulk materials or piles located in the drum 50 and the processing elements when the second shaft 58 rotates about an axis of rotation 60 55 feed.
  • a shaft 61 is mounted on one side on the drum 50, which is also provided with the processing elements 55.
  • Fig. 6 shows a section of a container which is designed as a drum 70.
  • a first shaft 71 penetrates the drum 70 and is held in a stable position in bearings 72 and 73.
  • the processing elements 75 which are designed as successively spaced knives, can crush or chop a bulk material or pile located in the drum 70.
  • the machining elements 75 connected to the first shaft 71 have a different radial extent.
  • the ends of the processing elements 75 directed towards the peripheral surface of the drum 70 are adapted to the contour of the drum inner wall and are spaced therefrom. This creates a defined distance between the processing elements 75 and the peripheral surface of the drum 70, so that a bulk material or pile located in the drum 70 can be comminuted between the peripheral surface of the drum 70 and processing elements 75.
  • the mixing elements shown in the figures are distributed over the circumference of the second shaft, so that axially directed conveying characteristics can be set for the material to be processed.
  • a processing element 15 for solid materials, such as bulk goods and / or aggregates of any structure and consistency, is arranged in a container 10, which picks up or processes a material in batches or continuously, and in turn delivers it batchwise or continuously.
  • the processing elements 15 are on a first shaft 11 stored.
  • the first shaft 11 penetrates the container 10 completely and is supported on both sides (bearings 12, 13).
  • a drive for the first shaft 11 is provided on one of the bearings 12, 13. Any machining tools, here machining elements 15, can be provided on the first shaft 11.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP95117760A 1994-11-16 1995-11-11 Elément de traitement de matières solides Withdrawn EP0722770A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4440873 1994-11-16
DE4440873A DE4440873A1 (de) 1994-11-16 1994-11-16 Bearbeitungselement von festen Materialien

Publications (1)

Publication Number Publication Date
EP0722770A1 true EP0722770A1 (fr) 1996-07-24

Family

ID=6533433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95117760A Withdrawn EP0722770A1 (fr) 1994-11-16 1995-11-11 Elément de traitement de matières solides

Country Status (2)

Country Link
EP (1) EP0722770A1 (fr)
DE (1) DE4440873A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2578306A1 (fr) 2011-10-05 2013-04-10 Gebr. Lödige Maschinenbau-Gesellschaft mit beschränkter Haftung Mélangeur avec dispositif de broyage et de dispersion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007009377B4 (de) 2007-02-21 2009-01-02 Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung Stiftung des öffentlichen Rechts Ozonsonde mit hydrothermischem Puffer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021121A (en) 1960-09-16 1962-02-13 Seco Inc Feed mixer
CH367379A (de) * 1957-12-20 1963-02-15 Loedige Wilhelm Verfahren und Vorrichtung zum Mischen und Zerkleinern von pulverförmigen, feinkörnigen und faserigen Mischgütern
DE1432028A1 (de) * 1964-02-18 1968-10-31 Draiswerke Gmbh Verfahren zum Betrieb von Mischmaschinen sowie zugehoerige Mischmaschine
GB1149850A (en) * 1965-12-17 1969-04-23 Draiswerke Gmbh Improvements relating to mixing apparatus for fibrous materials
WO1993002984A1 (fr) * 1991-07-27 1993-02-18 Babcock-Bsh Aktiengesellschaft Utilisation d'un dispositif melangeur, granulateur et secheur
WO1994012271A1 (fr) * 1992-12-02 1994-06-09 Conversion Systems, Inc. Malaxeur a helices ameliore

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1340787A (en) * 1920-01-30 1920-05-18 Harry J Morley Rivet-head catcher
GB647112A (en) * 1948-06-07 1950-12-06 Foster Yates & Thom Ltd Improvements relating to powder mixing machines
DE3711987A1 (de) * 1987-04-09 1988-10-27 Durmersheim Baustoffwerke Misch- und verteilvorrichtung fuer mischungen aus pulverigen bis koernigen feststoffen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH367379A (de) * 1957-12-20 1963-02-15 Loedige Wilhelm Verfahren und Vorrichtung zum Mischen und Zerkleinern von pulverförmigen, feinkörnigen und faserigen Mischgütern
US3021121A (en) 1960-09-16 1962-02-13 Seco Inc Feed mixer
DE1432028A1 (de) * 1964-02-18 1968-10-31 Draiswerke Gmbh Verfahren zum Betrieb von Mischmaschinen sowie zugehoerige Mischmaschine
GB1149850A (en) * 1965-12-17 1969-04-23 Draiswerke Gmbh Improvements relating to mixing apparatus for fibrous materials
WO1993002984A1 (fr) * 1991-07-27 1993-02-18 Babcock-Bsh Aktiengesellschaft Utilisation d'un dispositif melangeur, granulateur et secheur
WO1994012271A1 (fr) * 1992-12-02 1994-06-09 Conversion Systems, Inc. Malaxeur a helices ameliore

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2578306A1 (fr) 2011-10-05 2013-04-10 Gebr. Lödige Maschinenbau-Gesellschaft mit beschränkter Haftung Mélangeur avec dispositif de broyage et de dispersion
DE102011084053A1 (de) 2011-10-05 2013-04-11 Gebr. Lödige Maschinenbau-GmbH Mischer mit Zerkleinerungs- und Dispergiervorrichtung

Also Published As

Publication number Publication date
DE4440873A1 (de) 1996-05-30

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