EP2561925A1 - Rührstange für eine Rührvorrichtung - Google Patents

Rührstange für eine Rührvorrichtung Download PDF

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Publication number
EP2561925A1
EP2561925A1 EP12176961A EP12176961A EP2561925A1 EP 2561925 A1 EP2561925 A1 EP 2561925A1 EP 12176961 A EP12176961 A EP 12176961A EP 12176961 A EP12176961 A EP 12176961A EP 2561925 A1 EP2561925 A1 EP 2561925A1
Authority
EP
European Patent Office
Prior art keywords
paddle
head
protrusion
circumferential direction
rotatable shaft
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
EP12176961A
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English (en)
French (fr)
Other versions
EP2561925B1 (de
Inventor
Oliver Schennach
Thomas Köll
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.)
Thoeni Industriebetriebe GmbH
Original Assignee
Thoeni Industriebetriebe 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 Thoeni Industriebetriebe GmbH filed Critical Thoeni Industriebetriebe GmbH
Priority to EP12176961.6A priority Critical patent/EP2561925B1/de
Publication of EP2561925A1 publication Critical patent/EP2561925A1/de
Application granted granted Critical
Publication of EP2561925B1 publication Critical patent/EP2561925B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1122—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades anchor-shaped
    • 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
    • B01F27/65—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with buckets
    • 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

Definitions

  • the present invention relates to the field of stirring devices for fermenters.
  • EP 1841853 B1 discloses a horizontal fermenter consisting of a tank and a driven shaft penetrating in the tank in its longitudinal direction.
  • the driven shaft comprises a plurality of agitator arms arranged thereon with paddles.
  • the paddles are formed from two shares arranged in a V-shaped manner which act in one rotational direction as paddles and in the other rotational direction of the agitator as plough shares.
  • a paddle for a stirring device of a fermenter comprising a rod with a mounting portion being mountable to a rotatable shaft of the stirring apparatus; a head, the head and the mounting portion defining an outward direction from the mounting portion to the head; and a protrusion extending outwardly from the head in the outward direction, the protrusion forming an outer end of the paddle.
  • the head may be adapted for providing an efficient mixing of the fermentation material contained in the fermenter.
  • the stirring device is operated intermittently, with alternating stop periods and operation periods. Without the protrusions either the sediment layer formed during a stop period is not broken up or, if the paddle extends into the sediment layer, the startup of the stirring device requires a high driving torque. But also in embodiments where the stirring device is operated continuously, the protrusion combine a loosening of a sediment layer and a reduction of the sediment layer with a relatively low driving torque for driving the stirring device.
  • the rotatable shaft defines an axial direction parallel to an axis of rotation and radial directions perpendicular to the axial direction.
  • a rotation of the rotatable shaft defines two circumferential directions, clockwise and counterclockwise.
  • the paddle is mounted to the rotatable shaft, during a rotation of the shaft the head moves in one of the circumferential directions, i.e. clockwise or counterclockwise.
  • the circumferential directions are also referred to as first circumferential direction and second circumferential direction, wherein the first circumferential direction is one of clockwise and counterclockwise and the second circumferential direction is the other of clockwise and counterclockwise.
  • the head is an individual part mounted to the rod.
  • the head is formed by an outer end of the rod wherein the outer end is opposite the mounting portion. With regard to the axial direction, the outer end is a radially outer portion of the rod.
  • the protrusion extends from the head in a direction opposite to the rod.
  • the head is located between the rod and the radially outwardly extending protrusion.
  • the protrusion is adapted to the stirring motion the paddle performs during the stirring operation.
  • a rotation of the paddle mounted to the shaft and hence rotation of the shaft defines a first circumferential direction.
  • the protrusion has a tapered end pointing in the first circumferential direction.
  • the protrusion has a second tapered end, pointing in the second circumferential direction opposite the first circumferential direction. The tapered end(s) of the protrusion can be moved more easily through the sediment in the fermenter compared to a straight end, thereby reducing the driving torque required for driving the shaft to which the paddle is mounted.
  • the reduced driving torque is achieved for both rotational directions, i.e. for the first circumferential direction as well as for the second circumferential direction.
  • the protrusion is symmetrically formed with regard to the rod or, in another embodiment is symmetrically formed with regard to a radial direction perpendicular to the axis of rotation of the rotatable shaft.
  • the paddle is configured symmetrically such that for equal rotational velocities the driving torque for driving the rotatable shaft clockwise is identical to the driving torque for driving the rotatable shaft counterclockwise.
  • the protrusion as a first portion which forms the radially outer end of the paddle and a second portion which provides for an attachment to the rod.
  • the first portion has a first dimension in circumferential direction and the second portion has a second dimension in circumferential direction wherein the first dimension is larger than the second dimension.
  • the protrusion may be attached to the head, to the rod, or to both, the head and the rod. It should be understood that in case the head is formed by the rod, attachment of the protrusion to the rod means attachment to a portion of the rod different from the head portion.
  • the protrusion is formed by a plate.
  • the plate has two opposing major surfaces running parallel.
  • the major surfaces of the plate are oriented perpendicular to the axis of rotation of the shaft.
  • the major surfaces of the plate forming the protrusion are oriented at an angle to the axis of rotation. In such an orientation, where the major surfaces of the plate are oriented at an angle different from 90 degrees with regard to the axis of rotation of the shaft of the stirring apparatus, the driving torque required to drive the shaft is higher compared to an orientation where the major surfaces of the plate are oriented at an angle of 90 degrees (i.e. perpendicular) to the axis of rotation of the shaft.
  • the paddle comprises at least one further protrusion, wherein the protrusions are spaced from each other in the axial direction.
  • at least two protrusions are each formed of a plate with the major surfaces of the plates being parallel.
  • the head of the paddle comprises a recess having an opening facing the first circumferential direction.
  • the recess in the head of the paddle promotes transport of fermentation material by the head, wherein the head acts as a shovel.
  • the recess is a first recess and the head further comprises a second recess having an opening being oriented opposite the opening of the first recess.
  • first recess and the second recess are configured to require an identical driving torque in both rotational directions.
  • first recess and the second recess are configured so as to require different driving torque for a rotation of the shaft in different rotational directions (corresponding to the different circumferential directions).
  • the first recess and the second recess are formed by an I-shaped beam, having its longitudinal direction oriented crosswise the first circumferential direction.
  • the I-shaped beam has its longitudinal direction oriented perpendicular to the circumferential direction, i.e. parallel to the axial direction of the rotatable shaft.
  • an I-shaped beam comprises a base and two side portions flanking the base and being oriented transverse to the base.
  • the side portions may be parallel or non-parallel with respect to each other.
  • the side portions may be oriented perpendicular to the base.
  • the base and the side portions each may be formed of a plate having two parallel surfaces.
  • the head is variable in its size and/or shape, e.g. for varying the stirring resistance exerted by the head.
  • the protrusion may for the radially outer end in only one state of the variable head or in two or more states of the variable head, or in every state of the variable head.
  • the paddle comprises a variable head portion, the variable head portion generating a first stirring resistance in the first position and generating a second stirring resistance in a second position, wherein the first stirring resistance is smaller than the second stirring resistance.
  • the variable head portion therefore allows changing the stirring resistance depending on the position of the variable head portion.
  • the variable head portion is configured for taking up the first position during rotation in a first circumferential direction and for taking up the second position during a rotation in a second circumferential direction opposite the first circumferential direction.
  • the variable head portion is a flap pivotable between the first position and the second position.
  • the axis of rotation of the flap is oriented parallel to the axis of rotation of the rotatable shaft.
  • the axis of rotation of the flap is oriented at an angle to the axis of rotation of the rotatable shaft.
  • the flap is pivotable with regard to a radial direction, wherein the flap is closer to the radial direction in the second position than it is in the first position.
  • the variable head portion may include a head element that is translatory moveable.
  • the variable head portion is variable by a translatory and a rotational movement of a head element.
  • a stirring device of a fermenter comprising rotatable shaft; and at least one paddle mounted on the rotatable shaft, there at least one paddle being configured in accordance with one or more aforementioned embodiments of the first aspect.
  • a fermenter comprising a stirring device according to an embodiment of the second aspect.
  • the fermenter comprises a curved bottom, wherein the protrusion has a curved outer edge facing the curved bottom, the curved outer edge comprising a curvature that is adapted to the curvature of the curved bottom of the fermenter.
  • the curved outer edge of the protrusion has a curvature that is concentric with the curvature of the curved bottom of the fermenter.
  • a method of providing a stirring device comprising providing a rotatable shaft; providing at least one paddle according to an embodiment of the second aspect; and mounting the at least one paddle to the rotatable shaft.
  • Mounting of the paddles to the rotatable shaft may be performed in any suitable way, for example by attaching the mounting portion of the rod to the rotatable shaft. Attachment of the rod to the rotatable shaft may be performed by welding, gluing, etc.
  • mounting the paddle to the rotatable shaft comprises: providing a recess on the shaft; placing the rod of the paddle into the recess; and grouting the rod in the recess with a grouting material.
  • the method comprises curing the grouting material.
  • a suitable grouting material may be for example a metal or an alloy, having a melting point that is lower than the melting point of the material of the shaft of the stirring device, plastic, resin, etc.
  • Grouting the rod in the recess has the advantage that the shape and the mechanical stresses in the shaft may not (or at least less) be adversely affected by mounting the rod to the rotatable shaft compared to e.g. welding. Further, since the surface area of the rod that transfers forces from the rod to the rotatable shaft is larger in case of a grouted portion of the rod compared to e.g. a weld line, the mechanical stress in the rod as well as in the rotatable shaft is reduced.
  • Fig. 1 shows a paddle in accordance with embodiments of the herein disclosed subject matter.
  • the paddle 100 comprises a rod 102 having a mounting portion 104 which is mountable to a rotatable shaft of a stirring apparatus (not shown in Fig. 1 ).
  • the paddle 100 further comprises a head 106 which is located opposite the mounting portion 104.
  • a protrusion 108 extending radially outwardly from the head, i.e. in an outward direction 110 from the mounting portion 104 to the head 106.
  • the protrusion 108 forms a radially outer end of the paddle 100.
  • the paddle 100 comprises two of the protrusions 108.
  • the protrusions extend over the head 106 in a direction away from the rod 102.
  • the head 106 is configured for transporting and mixing fermentation material contained in a fermenter.
  • the head 106 has a shovel face 112 which is oriented transverse to an axis of rotation 114 about which the paddle is rotated during stirring operation.
  • the shovel face 112 of the head is oriented at a right angle with regard to the axis of rotation 114.
  • the shovel face 112 has a width 116 that extends over the width of 118 of the rod 102.
  • the head 106 may comprise through openings 119 allowing liquid to pass through the head 106.
  • the through openings 119 may avoid or at least reduce the elevation of liquid from during stirring operation, thereby reducing the stirring resistance.
  • each protrusion 108 is formed by a plate which is attached to a side of the head 106.
  • Fig. 2 shows a cross-sectional view of the paddle 100 of Fig. 1 along line II-II in Fig. 1 .
  • the head 106 is formed of an I-shaped beam 123 having a base 132 and side portions 134, 136 flanking the base 132.
  • the side portions 134, 136 are arranged transverse to the base 132, e.g. at an angle of 90 degrees and may be parallel with regard to each other.
  • the I-shaped beam has its longitudinal direction oriented crosswise a circumferential direction indicated at 120 in Fig. 2 .
  • the I-shaped beam 123 has its longitudinal direction oriented at the right angle with respect to the circumferential direction 120. Accordingly, the longitudinal direction of the I-shaped beam 123 extends perpendicular to the drawing plane of Fig. 2 .
  • the protrusion 108 has a first tapered end 122 and a second tapered end 124.
  • the first tapered end is pointing in the same direction as the shovel face 112 of the head.
  • the paddle 100 further comprises an opposite shovel face 126 pointing in an opposite direction opposite to the direction in which the first shovel face 112 is pointing.
  • the second tapered end 124 is pointing in the same direction as the second shovel face 126.
  • the first tapered end 122 and the second tapered end 124 are tapered in a motion plane in which the paddle moves during the stirring operation.
  • the first tapered end 122 points in a first circumferential direction 120 and the second tapered end points in a second circumferential direction, opposite the first circumferential direction 120.
  • the head further comprises two recesses 128, 130 pointing in opposite directions.
  • each recess points in a circumferential direction.
  • the shovel face 112, 126 is formed by a base 132 of the I-shaped beam 123.
  • the side portions 134, 136 flanking the base 132 form the recesses 128, 130 together with the base 132.
  • the rod 102 is also formed by an I-shaped beam having a base 138 flanked by two side portions 140, 142.
  • the I-shaped beam which forms the rod 102 has its flanking side portions 140, 142 oriented in circumferential directions, as shown in Fig. 2 .
  • Fig. 3 shows a further paddle 200 in accordance with embodiments of the herein disclosed subject matter.
  • the paddle 200 shown in Fig. 3 comprises basically the same features as the paddles 200 shown in Fig. 1 except that the protrusions 108 are attached not only to the head 106 but also to the rod 102. According to an embodiment this is accomplished by providing respectively formed plates 150 providing the protrusions 108 and, at an opposite end thereof an attachment portion 152 for attachment of the plate 150 to the rod 102.
  • the plates 150 comprise a bend 154 which allows the plates to be attached to the head 106 and makes the attachment portions 152 abutting the rod 102.
  • the attachment portions may be attached to a ground of the recesses formed in the rod 102.
  • the attachment portion 152 may be attached to the base 138 as well as to the side portions 140, 142.
  • the attachment portions 152 being attached in a recess of the rod may further increase the strength of the paddle.
  • Fig. 4 shows a further paddle 300 in accordance with embodiments of the herein disclosed subject matter.
  • the paddle 300 comprises a head 306 capable of providing a configuration wherein the head has a large shovel area provided by a fixed head portion 306a and a variable head portion 306b.
  • the variable head portion 306b has a first position in which the variable head portion 306b has a first effective height 360. Further, the variable head portion can be brought into a second position shown in solid lines in Fig. 4 , in which the variable head portion has a second effective height 362 which is larger than the first effective height 360. Since the width of the variable head portion (perpendicular to the drawing plane of Fig. 4 ) is the same in both positions, the variable head portion 306b provides, in accordance with a further embodiment, a first stirring area in the first position and a second stirring area in a second position, wherein the first stirring area is smaller than the second stirring area.
  • variable head portion 306b is realized by a pivotable flap 364 which can be fixed in the first position 356 and in the second position 358.
  • stop elements may be provided for fixation of the first and second positions, 356, 358.
  • a first stop element 366 is provided according to an embodiment, the first stop element 366 limiting a movement of in the variable head portion 306b and fixing the variable head portion 360 in the second position if the paddle is moved in a first circumferential direction 120 in which the fermentation material exerts a force towards the first stop element 366 on the variable head portion 306b.
  • the paddle 300 comprises a second stop element 368 against which the variable head portion 306b is urged during movement of the paddle 300 in a second circumferential direction 121, opposite the first circumferential direction 120.
  • the fermentation material (not shown in Fig. 4 ) exerts a force on the variable head portion, this force urging the variable head portion 306b, i.e. the pivotable flap 364 of the head 306 down until its rotational movement is stopped by the second stop element 368, corresponding to the first position of the variable head portion.
  • variable head portion 306b thus results in a first stirring resistance in the first position and in a second stirring resistance when the variable head portion 306b is in the second position, wherein the first stirring resistance is smaller than the second stirring resistance.
  • variable head portion is just one embodiment of a variable head portion according to embodiments of the herein disclosed subject matter. It should be understood that the variable head portion can be configured in various different ways. For example while in the exemplary paddle shown in Fig. 4 the rotation axis of the variable head portion 306b is oriented parallel to an axis of rotation of the paddle which is generally perpendicular to the drawing plane of Fig. 4 , other orientations of a rotation axis of a pivotable flap, e.g. a radial orientation in a radial direction with regard to the axis of rotation of the paddle is also possible.
  • Fig. 5 shows a side view of the paddle 300 of Fig. 4 when viewed from line V-V in Fig. 4 .
  • Fig. 5 the cutting plane resulting in the cross sectional view of Fig. 4 is indicated at the line IV-IV. Further shown in Fig. 5 is the axis of rotation 370 about which the variable head portion 306b is pivotable.
  • the protrusion 108 forms a radially outer end of the paddle in the first position of the variable head portion as well as in the second position of the variable head portion, as shown in Fig. 5 .
  • the protrusion forms a radially outer end of the paddle only in either the first or the second position of the variable head portion (not shown in Fig. 5 ).
  • the paddle as a whole or only part thereof may be armoured, e.g. by hardening, hard coating, e.g. with wolfram carbide, etc.
  • the protrusions may formed by plates that have straight, radially extending edges pointing in circumferential direction. While the configuration and shape of edges pointing in circumferential direction may influence the stirring resistance of caused by the protrusion, the protrusion may still be useful for loosening the sediment in the fermenter.
  • Fig. 6 shows a fermenter 690 in accordance with embodiments of the herein disclosed subject matter.
  • the fermenter 690 comprises a stirring device 692 comprising a rotatable shaft 694 and a plurality of paddles 600 mounted to the rotatable shaft 694, one of which is shown in Fig. 6 .
  • the fermenter 690 has a curved bottom 695 wherein the protrusion 108 has a curved outer edge 693 comprising a curvature that is concentric with the curvature of the curved bottom 695 of the fermenter 690.
  • the fermenter is a horizontal fermenter having a stirring device with a horizontal axis.
  • the fermenter is a so-called plug flow fermenter wherein fermentation material is introduced at the first end of the fermenter and is discharged at a second end of the fermenter.
  • the rotatable shaft of the stirring device runs on bearings at the end portions of the fermenter 690.
  • an auxiliary support 691 may be provided for supporting the rotatable shaft 694 between the first end and the second end of the fermenter.
  • Fig. 7 illustrates an embodiment of a method of providing a stirring device according to embodiments of the herein disclosed subject matter.
  • the method generally comprises providing a rotatable shaft, providing at least one paddle in accordance with embodiments of the herein disclosed subject matter and mounting the at least one paddle to the rotatable shaft.
  • the method comprises providing a recess 696 on the rotatable shaft 694, placing the rod 102 of the paddle into the recess 696 and grouting the rod 102 in the recess with a grouting material 697.
  • the recess 696 is provided on an outer surface of the rotatable shaft 694, as shown in Fig. 7 .
  • the recess 696 is provided by attaching a formwork 698 on the rotatable shaft 694.
  • the recess will be formed by the rotatable shaft 694 itself, e.g. by deep drawing of a portion of the rotatable shaft 694.
  • the rotatable shaft 694 is a hollow shaft.
  • the formwork 698 may be removed after curing of the grouting material or may be left in place, even during operation of the stirring device.
  • the paddles are mounted to the rotatable shaft by any suitable means, e.g. by welding, glueing, threaded bolts, etc.
  • the arrangement of the paddles on the rotatable shaft may be of any suitable configuration.
  • the smallest angle between two paddles takes a first value, e.g. a value in the range between 20 degrees and 50 degrees, e.g. 36 degrees.
  • two paddles forming the smallest angle with respect to each other i.e. a first paddle and a second paddle, are spaced apart from each other in an axial direction.
  • a third paddle is axially arranged between these two paddles.
  • the first paddle is spaced from the third paddle by a first distance and the second paddle is spaced from the third paddle by a second distance, wherein the first distance and the second distance are smaller than a third distance between the first paddle and the second paddle.
  • the first paddle and the second paddle form a first angle which is smaller than a second angle between the first paddle and the third paddle and a third angle between the second paddle and the third paddle.
  • subsequent paddles in axial direction form a first angle which is larger than the smallest angle between two paddles.
  • any entity disclosed herein e.g. components and elements, e.g. of the paddle, of the stirring device, or of the fermenter, are not limited to a dedicated entity as described in some embodiments. Rather, the herein disclosed subject matter may be implemented in various ways and various granularities on device level while still providing the desired functionality. Further, it should be noted that according to embodiments a separate entity may be provided for each of the functions disclosed herein. According to other embodiments, an entity is configured for providing two or more functions as disclosed herein. For example, an I-shaped beam may be formed by a single element or may be formed by two or more elements which are combined or attached to each other in order to provide the desired functionality. Further, also the protrusion or a plate forming the protrusion may be formed of a single piece or may be formed of two or more separate elements which are combined or attached to each other to provide the desired functionality.
  • the paddle for a stirring device.
  • the paddle comprises a rod with a mounting portion being mountable to a rotatable shaft of the stirring apparatus; a head, the head and the mounting portion defining an outward direction from the mounting portion to the head; and a protrusion extending outwardly from the head in the outward direction, the protrusion thereby forming an outer end of the paddel.
  • the protrusion may be tapered in circumferential direction.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP12176961.6A 2011-08-26 2012-07-18 Rührstange für eine Rührvorrichtung Active EP2561925B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12176961.6A EP2561925B1 (de) 2011-08-26 2012-07-18 Rührstange für eine Rührvorrichtung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP11179091 2011-08-26
EP12176961.6A EP2561925B1 (de) 2011-08-26 2012-07-18 Rührstange für eine Rührvorrichtung

Publications (2)

Publication Number Publication Date
EP2561925A1 true EP2561925A1 (de) 2013-02-27
EP2561925B1 EP2561925B1 (de) 2014-04-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2837420A1 (de) 2013-08-16 2015-02-18 Thöni Industriebetriebe GmbH Rührvorrichtung
WO2018068836A1 (en) 2016-10-11 2018-04-19 Thöni Industriebetriebe Gmbh Stirring device with improved stirring element configuration
US10550361B2 (en) 2015-06-19 2020-02-04 Thöni Industriebetriebe Gmbh Hingedly supported biogas plant fermentation container

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433478A (en) * 1943-12-22 1947-12-30 Gen Foods Corp Mixing and filling apparatus
US3027102A (en) * 1957-12-20 1962-03-27 Lodige Wilhelm Apparatus for mixing and comminuting
GB1025893A (en) * 1962-01-19 1966-04-14 Loedige Wilhelm Improvements relating to mixing apparatus
FR1511391A (fr) * 1967-02-14 1968-01-26 Appareil pour mélanger et, le cas échéant, fragmenter et/ou humecter des substances pulvérulentes, à grains fins ou fibreuses
DE29803914U1 (de) * 1998-03-05 1998-04-30 Kovacs Attila Sandor Mischervorrichtung mit Mischwerk
EP1352683A1 (de) * 2002-04-09 2003-10-15 LIPP Mischtechnik GmbH Horizontalmischer mit Abstreifern
WO2006079228A1 (de) * 2005-01-26 2006-08-03 Kompogas Ag Verfahren und vorrichtung zum betrieb eines liegenden pfropfstrombetriebenen fermenters

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433478A (en) * 1943-12-22 1947-12-30 Gen Foods Corp Mixing and filling apparatus
US3027102A (en) * 1957-12-20 1962-03-27 Lodige Wilhelm Apparatus for mixing and comminuting
GB1025893A (en) * 1962-01-19 1966-04-14 Loedige Wilhelm Improvements relating to mixing apparatus
FR1511391A (fr) * 1967-02-14 1968-01-26 Appareil pour mélanger et, le cas échéant, fragmenter et/ou humecter des substances pulvérulentes, à grains fins ou fibreuses
DE29803914U1 (de) * 1998-03-05 1998-04-30 Kovacs Attila Sandor Mischervorrichtung mit Mischwerk
EP1352683A1 (de) * 2002-04-09 2003-10-15 LIPP Mischtechnik GmbH Horizontalmischer mit Abstreifern
WO2006079228A1 (de) * 2005-01-26 2006-08-03 Kompogas Ag Verfahren und vorrichtung zum betrieb eines liegenden pfropfstrombetriebenen fermenters
EP1841853B1 (de) 2005-01-26 2008-04-23 Kompogas AG Verfahren und vorrichtung zum betrieb eines liegenden pfropfstrombetriebenen fermenters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2837420A1 (de) 2013-08-16 2015-02-18 Thöni Industriebetriebe GmbH Rührvorrichtung
US10400205B2 (en) 2013-08-16 2019-09-03 Thöni Industriebetriebe Gmbh Stirring device
US10550361B2 (en) 2015-06-19 2020-02-04 Thöni Industriebetriebe Gmbh Hingedly supported biogas plant fermentation container
WO2018068836A1 (en) 2016-10-11 2018-04-19 Thöni Industriebetriebe Gmbh Stirring device with improved stirring element configuration
US11505775B2 (en) 2016-10-11 2022-11-22 Thöni Industriebetriebe Gmbh Stirring device with improved stirring element configuration

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