EP2986365B1 - Konditionierer, paddelschiene, und verfahren zum mischen - Google Patents

Konditionierer, paddelschiene, und verfahren zum mischen Download PDF

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Publication number
EP2986365B1
EP2986365B1 EP14718585.4A EP14718585A EP2986365B1 EP 2986365 B1 EP2986365 B1 EP 2986365B1 EP 14718585 A EP14718585 A EP 14718585A EP 2986365 B1 EP2986365 B1 EP 2986365B1
Authority
EP
European Patent Office
Prior art keywords
paddle
mixer shaft
conditioner
rotation
mixer
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.)
Active
Application number
EP14718585.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2986365A1 (de
Inventor
Roger RÄSS
Andrea Hermsmeyer
Sebastian WELS
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.)
Buehler AG
Original Assignee
Buehler AG
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 Buehler AG filed Critical Buehler AG
Priority to EP14718585.4A priority Critical patent/EP2986365B1/de
Publication of EP2986365A1 publication Critical patent/EP2986365A1/de
Application granted granted Critical
Publication of EP2986365B1 publication Critical patent/EP2986365B1/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
    • 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
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
    • B01F27/11251—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis having holes in the surface
    • 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
    • B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
    • B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
    • 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
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis
    • 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
    • B01F27/2123—Shafts with both stirring means and feeding or discharging 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
    • B01F27/60—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
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/33—Transmissions; Means for modifying the speed or direction of rotation
    • B01F35/333—Transmissions; Means for modifying the speed or direction of rotation the rotation sense being changeable, e.g. to mix or aerate, to move a fluid forward or backward or to suck or blow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/752—Discharge mechanisms with arrangements for converting the mechanism from mixing to discharging, e.g. by either guiding a mixture back into a receptacle or discharging it

Definitions

  • the present invention relates to a method for mixing, a conditioner and a paddle rail according to the independent claims.
  • a mixer which consists essentially of a cylindrical housing and has an inlet at one end and an outlet at the other end.
  • a mixer shaft is arranged in the cylindrical housing and has a plurality of paddles for mixing the product introduced into the mixer.
  • the mixer shaft is operated with the outlet closed in an initial phase of operation in such a way that the material to be mixed accumulates in the area of the closed outlet.
  • the mixer shaft is operated in the opposite direction, so that the material to be mixed is again mixed, conditioned and conveyed towards the inlet.
  • the mixer shaft is driven again in the transport direction and the outlet is opened.
  • Such a method is problematic because the increased back pressure cannot ensure that the entire material is mixed and conditioned evenly becomes.
  • the mixer and the material to be mixed are undesirably loaded with pressure.
  • the U.S. 5,580,170 A describes a mixer with a mixer shaft with paddles that are wedge-shaped in cross section.
  • the paddles are arranged in such a way that when the mixer shaft rotates, depending on the paddle type, the product is conveyed in the direction of the outlet or the inlet, which is intended to promote mixing.
  • JP 2004 129519 A discloses a conditioner and a method for mixing a product to be conditioned in a conditioner, comprising the steps of partially filling the conditioner with the product rotating a mixer shaft of the conditioner in a first direction of rotation, so that at least one paddle arranged on the mixer shaft essentially no conveying of the product in the initial area in a direction parallel to the mixer shaft, - rotating the mixer shaft in a second direction of rotation so that the at least one paddle causes the product to be conveyed in a direction parallel to the mixer shaft, the product being conveyed by the conditioner above the Initial area adjacent section of the conditioner is conveyed to the outlet of the conditioner.
  • a method for mixing and a conditioner should be made available, which enable a loss-free start-up, i.e. that the disposal or recycling of the product becomes unnecessary when the mixer is started up.
  • mixer is understood to mean both a mixer for mixing different materials and a conditioner.
  • a paddle for a mixer comprises a flat element with a work surface and a rear surface. When used as intended, the paddle is arranged essentially on a plane perpendicular to an axis of rotation of a mixer shaft.
  • the paddle has a fastening means for fastening the paddle to the mixer shaft.
  • the working surface is inclined by a working angle on one side and the rear surface by a back angle on the other side of the plane perpendicular to the axis of rotation of the mixer shaft. The back angle is smaller than the working angle.
  • the back angle of the back surface is smaller than the working angle of the work surface ensures that when the paddle or mixer shaft is turned in the direction of the converging work and back surface, a material to be mixed is not only mixed by the paddle but also by the work surface away further to an outlet.
  • the inclination of the working surface to the rear surface enables the paddle to have a cutting edge on its front edge in the direction of rotation, which can be moved with little force through the material to be mixed.
  • the back angle of the back surface can be equal to the working angle of the work surface. This is particularly advantageous if an alignment of the paddle is adjustable so that the back angle or working angle can be changed.
  • the work surface and / or the rear surface can also be designed as a curved surface.
  • the corresponding working angle and back angle are then understood to be the angle between the vertical plane and an imaginary line through the end points of the corresponding surface in a cross section of the paddle. The same applies to a paddle, which is formed from a folded sheet metal.
  • the back angle can be greater than or equal to 0 °, preferably exactly 0 °. Because the back angle is greater than or equal to 0 °, when the mixer shaft rotates backwards, the product to be mixed is essentially not conveyed backwards, but only mixed.
  • a backward rotation is understood here and in the following to mean a rotation in which the paddle does not move in the direction of the cutting edge but in the opposite direction. Accordingly, when starting a mixer, for example, the mixer shaft can initially be rotated backwards so that the material filled into the mixer is only mixed and, if necessary, conditioned, but not conveyed in a direction parallel to the mixer shaft.
  • the sum of the working angle and the back angle can be between 4 ° and 50 °, preferably between 6 ° and 30 °, particularly preferably between 7 ° and 15 °. It has been shown that such an angle between the working surface and the rear surface represents an optimum both for conveying the product to be mixed and for mixing, in particular when the mixer shaft is rotated backwards.
  • the paddle can have a cutting edge or a cutting surface which, when used as intended, extends from an area adjacent to the mixer shaft to an essentially outermost dimension of the paddle.
  • a cutting edge is understood to mean that edge at which the working surface and the rear surface intersect. Such a cutting edge does not necessarily have to be sharp-edged but can also have a certain radius or be truncated so that a cutting surface is formed. It is also conceivable that the cutting edge, or possibly the cutting surface, in the area of the paddle, which is close to the mixer shaft, is made wider or narrower than in the area of the outermost dimension of the paddle. The fact that the cutting edge or cutting surface extends to the outermost dimension of the paddle ensures that the paddle can be guided through the material to be mixed with as little effort as possible.
  • a mixing surface can lie opposite the cutting edge which, when used as intended, extends from an area adjacent to the mixer shaft to an essentially outermost dimension of the paddle.
  • Such a mixing surface brings about an optimal mixing of the material to be mixed, especially when the mixer shaft rotates backwards.
  • Such a mixing surface has increased resistance when the mixer shaft is rotated backwards when passing through the material to be mixed, on the other hand it enables optimal mixing.
  • the cutting edge and / or the mixing surface can be arranged essentially radially with respect to an axis of rotation of the mixer shaft. Such a radial alignment of the cutting edge and / or the mixing surface ensures that the working surface in the outermost end of the paddle is made wider and accordingly develops a greater conveying effect and / or mixing effect.
  • the mixing surface with the rear surface can include a mixing angle between 40 ° and 86 °, preferably between 60 ° and 84 °, particularly preferably between 75 ° and 83 °.
  • a mixing surface which has a slight inclination with respect to an axis of rotation of a mixing shaft, reduces the resistance when the paddle is guided through the product to be mixed when the mixer shaft rotates backwards.
  • the paddle can be formed from a square profile with a welded sheet metal angled in a V-shape in cross section.
  • the tip of the V-shaped plate forms the cutting edge, while the mixing surface is formed by a surface of the square profile opposite the cutting edge.
  • two sheet metal plates can alternatively be connected to one another at an angle. The advantage here is that standard components can be used.
  • the paddle can be designed as a simple guide plate, which, however, is rotatably mounted so that the working angle and back angle can be adjusted. In this way, depending on the direction of rotation, the paddle can be aligned in such a way that conveyance and / or mixing takes place.
  • the paddle from a flexible material and to arrange it in such a way that the paddle is essentially rigid when it is moved in the direction of rotation and causes conveyance, while when it is turned backwards the paddle is flexible and deformed by the product to be mixed and consequently no promotion but only a mixture.
  • Such a mode of operation can also be achieved in that, instead of the flexible material, the paddle is articulated to the mixer shaft in such a way that it is held in a working position by the product to be mixed when it moves in the direction of rotation and causes a conveyance, while with a Reverse rotation the paddle is swiveled out of the working position by the product to be mixed and consequently no conveyance but only a mixture effects.
  • the articulation can take place radially, tangentially or in any orientation with respect to the mixer shaft. It can also be provided that stop elements are present which limit the pivoting movement of the paddle, the limitation being more preferably adjustable.
  • paddles made of a rubber-like material can be used here, which function like a dough scraper.
  • the paddle can also at least partially consist of articulated or rotatably mounted elements in the manner of a blind, which are adjusted in their position depending on the direction of rotation in order to effect a conveyance or mixing.
  • the paddle can furthermore have at least partially pneumatically or hydraulically actuated areas which enable the working angle and / or the back angle to be changed.
  • the paddle can also be formed entirely from an inflatable element.
  • the paddle can have an opening extending from the working surface to the rear surface. Such an opening through the work or rear surface allows the product to be mixed to flow through, so that optimal mixing takes place.
  • the paddle can alternatively be formed from two elongated elements which are arranged radially on the mixer shaft and with one another at their end remote from the shaft arc-shaped connecting element are connected.
  • the connecting element can also serve as a stripper.
  • the opening can also be provided with rotatable and / or foldable elements, which open the opening only in a certain direction of rotation (direction of rotation or reverse rotation).
  • the paddle can also be formed as a brush, i.e. from a plurality of bristles or bristle-like elements, preferably arranged radially with respect to the mixer shaft.
  • a paddle rail for a mixer comprises a paddle holder and one or more paddles as described above. Such a paddle rail allows a simple assembly of several paddles at the same time on a mixer shaft of a mixer.
  • the paddle holder can have receiving positions for receiving the fastening means of the paddles.
  • Such receiving positions are, for example, simple bores into which a correspondingly configured fastening means of the paddle can be inserted.
  • the paddles are welded in the paddle holder.
  • the fastening is ensured by means of a press fit or by means of a screw connection.
  • the paddle rail can have a plurality of fastening means for fastening the paddle rail to a mixer shaft.
  • the paddle rail can be screwed onto the mixer shaft.
  • the fastening means would preferably be through bores through which the paddle rail can be fastened to the mixer shaft by means of a corresponding screw.
  • the paddle rail engages in corresponding latching hooks of the mixer shaft and is only secured with a securing means, for example in the form of a pin or a screw.
  • a simple detachable fastening allows in particular a quick replacement of worn paddle rails or worn paddles.
  • different paddle rails can be used depending on the product to be mixed and can be exchanged quickly.
  • the paddle holder is preferably designed as a profile with a U-shaped cross section and is dimensioned in such a way that two paddle holders can encompass the mixer shaft.
  • the mixer shaft can have a substantially square cross-section. Both paddle holders, when connected to one another, also form an essentially quadrangular profile arrangement with an interior, the dimensions of which essentially correspond to the outer dimensions of the mixer shaft.
  • the mixer shaft can be designed, for example, as a spline or spline shaft. A frictional connection with the mixer shaft is also conceivable.
  • a stripper for stripping a material to be mixed when used as intended can be arranged from a housing wall of a mixer.
  • different strippers can be used so that a distance between the stripper and the housing wall of the mixer can be individually adjusted.
  • the wiper can have the shape of a ring segment.
  • the stripper can each have a connecting means at its ends, which are arranged in the direction of rotation when used as intended, with which the stripper of a paddle with the Stripper of a following and / or preceding paddle in the direction of rotation can be connected. Because the strippers of the individual paddles can be connected to one another, the strippers can be designed in a correspondingly filigree manner without, however, losing the required stability.
  • the strippers can be designed as a separate component for retrofitting and, in particular, have connecting means which simultaneously serve both to connect the strippers to the paddle and to connect the strippers to one another. This creates a more cost-effective and easily retrofittable alternative.
  • a mixer shaft of a mixer has a plurality of paddles or a plurality of paddle rails, as described above, at least in a starting area of the mixer shaft. Accordingly, such a mixer shaft is suitable for simultaneously conveying and mixing the product to be mixed in one direction of rotation, while the mixer shaft merely mixes the product to be mixed in the other direction of rotation.
  • the paddles which are arranged one after the other in the direction of rotation when used as intended, can be connected to one another by means of straps.
  • Such strippers serve, on the one hand, to strip off any material adhering to the housing wall of the mixer and, on the other hand, the strippers increase the stability of the individual paddles and the strippers with one another.
  • the stripper can alternatively be designed as a wire rope which is fastened or guided along the mixer shaft in corresponding receiving sections of the paddles. This also creates a simpler and cheaper variant for forming a stripper.
  • the pitch (pitch) of the helical structure which is formed by the interconnected strippers, can be selected as required. It is thus conceivable, for example, that not every paddle arranged in the direction of rotation is connected to the following or preceding paddle by means of stripes, so that a greater slope is created. Furthermore, the strippers can be connected to one another in such a way that several helical structures are created.
  • the helical structure prefferably has a direction of rotation opposite to the direction of rotation of the paddles. This means that paddles arranged in the direction of rotation are arranged, for example, along an imaginary right-hand helix, while the helical structure is left-hand.
  • the paddles or the paddle rails can only be arranged in the starting area of the mixer shaft.
  • Such a mixer shaft is accordingly equipped with different conveying and mixing means. Because the correspondingly shaped paddles are only arranged in the starting area, various mixing and conveying operations can be implemented with one and the same mixer shaft. In particular, however, it is still possible, when starting up the mixer, to keep the product to be mixed in the starting area of the mixer shaft until the required mixing is ensured.
  • the paddles and the paddle rail can also be arranged as desired along the mixer shaft.
  • a mixer according to the invention has a mixer shaft as described above. Such a mixer enables problem-free start-up without the product required to start up the mixer being disposed of or recycled.
  • essentially no conveyance of the product is effected when the mixer shaft rotates in the first direction of rotation.
  • “essentially no conveyance” means that the product remains in the area and is possibly circulated there in which the paddles are arranged.
  • this does not rule out that the product is conveyed back and forth within the area, for example in a direction parallel to the mixer shaft, without, however, overall conveying of product in the direction of an outlet of the mixer and out of the area in which the paddles are arranged takes place out when the mixer shaft rotates in the first direction of rotation.
  • other elements are attached to the mixer shaft which either cause no conveyance or reverse conveyance, which means conveying in the direction of the inlet of the mixer.
  • the mixer can be arranged with a slope. This means, for example, that the mixer shaft is not arranged essentially horizontally but inclined slightly downwards.
  • the starting area of the mixer shaft is arranged lower than an outlet area, so that when the mixer is started up, gravity is used to hold the product to be mixed in the starting area of the mixer.
  • an outlet area can be arranged lower than the initial area become.
  • paddles or paddle-like elements can be arranged on the inner surface of the shell of the mixer in order to further improve the mixing.
  • damming means can be arranged in the mixer, which hold the product to be mixed in the starting area of the mixer shaft when starting up.
  • One possible embodiment of the damming means is a pneumatic damming disk which is arranged circumferentially on the inner surface of the jacket of the mixer and can be inflated if necessary.
  • a baffle plate in the manner of an iris diaphragm can also be implemented.
  • the stowage means can also be arranged on the mixer shaft, for example as hinged elements which can be opened and closed like an umbrella.
  • CFRP and / or GFRP carbon fiber reinforced and / or glass fiber reinforced plastics
  • plastics as well as ceramic materials are possible.
  • the steps of rotating in the first direction of rotation and in the second direction of rotation can be repeated several times. By changing the direction of rotation several times, it is even possible to influence the mixing or conditioning while the mixer is in operation.
  • a preconditioning or premixing can be carried out upstream of the process according to the invention.
  • the mixing area along the shaft can be changed by changing the orientation of the paddles.
  • the mixing area can be made shorter or longer depending on the throughput.
  • Another alternative or additional possibility is to mix and heat the product to be mixed with compressed air and / or steam (additionally) while the mixer shaft is stationary or rotating.
  • the nozzles for introducing compressed air and / or steam can be both on the inner surface of the Shell of the mixer as well as be arranged on the mixer shaft.
  • rotating nozzles which are set in rotation by the outflow of compressed air and / or steam, can be provided.
  • FIGs 1a to 1c show a paddle 30. It is in Figure 1a the paddle 30 shown in a view in Figure 1b in a perspective view and in the Figure 1c in a cross section along the line AA according to Figure 1a .
  • the paddle 30 is essentially a flat element which is wedge-shaped.
  • the paddle 30 On the side leading in the direction of rotation R, the paddle 30 has a cutting edge 37 which, however, in the embodiment shown is ground to form a cutting surface.
  • This cutting edge 37 is formed as the intersection of the working surface 33 and the rear surface 34, which are at an angle to one another.
  • a mixing surface 38 is formed on the side lying opposite the cutting edge 37, that is to say in the opposite direction of rotation R '.
  • the paddle 30 further has a through opening 35 between the working surface 33 and the rear surface 34.
  • the paddle 30 has a fastening means 32 in the form of a pin on the side associated with a mixing shaft when used as intended.
  • the side opposite the fastening means 32 is curved, the curvature of a housing wall 2 (see FIG Figure 4b ) of a mixer.
  • the paddle 30 When used as intended, the paddle 30 is essentially perpendicular to an axis of rotation of a mixer shaft Located on level 13. However, the rear surface 34 is inclined to this perpendicular plane 13 and includes a rear angle 43 with its plane. The working surface 33 is also inclined with respect to the vertical plane 13 and includes a working angle 42. In this case, however, the working angle 42 is always greater than the back angle 43.
  • the cutting edge 37 is not sharp, but has an average radius of approximately 2 mm. This radius can be adjusted depending on the planned application. Alternatively, instead of a radius, a sharp cutting edge 37 or a truncated cutting edge 37 can also be formed with a cutting surface.
  • the mixing surface 38 lying opposite the cutting edge 37 protrudes from the rear surface 34 at a mixing angle 39.
  • all surfaces namely the work surface 33, the rear surface 34 and the mixing surface 38 can also be designed as curved surfaces.
  • the corresponding angles, working angles 42, back angles 43 and mixing angles 39 are then to be defined by means of an imaginary straight line through the end points of the corresponding surfaces.
  • both the cutting edge 37 and the mixing surface 38 extend from a mixer shaft 10 (see FIG Figures 3a and 3b ) to the outermost dimension of the paddle 30.
  • this outer dimension of the paddle 30 extends essentially to an inside of a housing wall 2 (see FIG Figure 4b ). It goes without saying that there is always a certain gap between the housing wall 2 and the paddle 30 in the order of magnitude of 1 mm to 10 mm.
  • the Figure 1e shows a paddle 30 which is formed from a single, folded sheet metal 52.
  • the imaginary work surface 33 and rear surface 34 are represented by the dashed two-dot line, which each extend from the corresponding edge of the mixing surface 38 to the cutting edge.
  • the other components correspond to those of Figures 1a to 1c .
  • a paddle 30 which consists of a paddle frame 54, to which a paddle flap 55, which is part of the work surface 33, is articulated by means of a hinge 56.
  • the paddle frame 54 and the paddle flap 55 are arranged on a mixer shaft in such a way that the paddle flap 55 remains closed in the direction of rotation R due to the pressure generated by the product on the paddle flap 55.
  • the product exerts a pressure on the invisible rear surface of the paddle 30, which causes the paddle flap 55 to open so that the product is not conveyed.
  • there may be means for holding the paddle flap 55 in the closed position for example magnets, which only allow the paddle flap to open when a pressure threshold value that can be determined has been reached allow.
  • Means for closing the paddle flap 55 for example a spring, can also be present, which support the closing of the paddle flap 55.
  • the entire paddle can be hinged to the mixer shaft and its movement limited by stop elements, the position of the stop elements preferably being adjustable.
  • the Figure 1j shows a paddle 30, in which the working angle can be adjusted by means of a pneumatic element 57. Alternatively, the back angle can be adjusted in a similar manner. It is also conceivable that both the working angle 42 and the rear angle 43 or the alignment of the paddle 30 are adjustable.
  • FIG. 2a shows a view Figure 2b a perspective view and Figure 2c a side view of the paddle rail 20.
  • the paddle rail 20 comprises a paddle holder 21, on the three wedge-shaped paddles 30 in the illustrated embodiment, as above Figures 1a to 1c described, are arranged.
  • the paddle holder 21 has four fastening means 23 designed as bores, by means of which the paddle rail 20 is attached, for example, to a mixer shaft 10 (see FIG Figure 3a ) can be attached.
  • a stripper 40 is arranged on each of the three paddles 30, each of which is designed with a connecting means 41 at both ends.
  • the stripper 40 is on the rear surface 34 (see Figure 1c ) attached to the paddle 30.
  • the strippers 40 can be designed differently depending on the application.
  • the strippers 40 can also be configured differently at their ends in the area of the connecting means 41. For example, these can also be straight and only bent at an angle of approximately 90 ° in the end area.
  • the paddles 30 are with their fastening means 32 (see Figure 1a ) inserted into corresponding receiving positions (not shown) of the paddle holder 21 and welded there accordingly.
  • the paddles 30 are arranged such that the paddles 30, when the paddle rail 20 is used as intended, with their rear surface 34 or with the stripper 40 on a plane perpendicular to the axis of rotation 11 of a mixer shaft 10 (see Figure 3a ) are arranged.
  • Each of the paddles 30 is provided with an opening 35 which extends from the working surface 33 to the rear surface 34 (see Figures 1 ) runs.
  • two paddle rails 20 are shown schematically, each comprising a paddle holder 21 and paddle 30.
  • the paddle holders 21 are each designed with a substantially U-shaped cross section, are arranged around a mixer shaft 10 and are connected to one another. Frictional engagement is used to transmit the torque.
  • the mixer shaft 10 can be designed as a square profile, as in FIG Figure 2e shown.
  • the paddle holders 21 are designed with a corresponding cross section. In this case, the torque is transmitted by means of a form fit.
  • the Figure 2f shows a paddle 30 with two strippers 40, which are connected to one another and to the paddle 30 by means of connecting means 41. Only one connecting means 41 is therefore necessary in order to fasten the strippers 40 to the paddle 30.
  • FIG. 3a and 3b a view of a mixer shaft 10 or a perspective view of the mixer shaft 10 is shown.
  • a plurality of paddles 30 are arranged on the mixer shaft 10. These paddles 30 are located in a starting area 12 of the mixer shaft 10 This starting area 12 is also provided with further mixing paddles 14, which have different designs.
  • the paddles 30 are each connected to one another with the corresponding strippers 40.
  • the individual paddles 30 are each arranged on a paddle holder 21.
  • the paddles 30, the strippers 40 and the paddle holder 21 together form a paddle rail 20, which can easily be exchanged if necessary.
  • the mixer shaft 10 rotates about the axis of rotation 11.
  • the Figures 4a and 4b show a mixer 1 according to the invention, the Figure 4a a view and the Figure 4b shows a perspective view of the mixer 1 with an open housing wall 2.
  • the mixer 1 has an inlet 15 and an outlet 16.
  • the mixer shaft 10 arranged in the interior of the mixer 1 is provided with wedge-shaped paddles 30, as described above. These wedge-shaped paddles 30 ensure that in a direction of rotation R (see Figure 1a ) the product filled into the mixer 1 is mixed and conveyed, while the product is merely mixed when the mixer shaft 10 rotates in the opposite direction R '.
  • the individual paddles 30 are each connected to one another via strippers 40.
  • the paddles 30 are each arranged on a paddle holder 21.
  • the strippers 40 have connecting means 41 at their ends, which enable the connection to a subsequent stripper 40.
  • the wedge-shaped paddles 30 are on the side opposite to the direction of rotation R (see Figure 1a ) have a mixing surface 38, while a cutting edge 37 is arranged on the other side.
  • Such a mixer 1 can now, for example, at least partially when starting up with a product to be mixed via the inlet 15 be filled.
  • the mixer shaft 10 can then be rotated in such a way that the mixing surfaces 38 of the paddles 30 mix the product to be mixed. Only when the product to be mixed has reached the desired consistency, for example by adding steam and / or by heating, can the direction of rotation of the mixer shaft 10 be changed so that the individual paddles 30 with their work surface 33 mix the product to be mixed and at the same time in Promote direction to outlet 16. If necessary, the direction of rotation of the mixer shaft 10 can be changed again if the product to be mixed and conditioned does not yet meet the required conditions.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
EP14718585.4A 2013-04-17 2014-04-17 Konditionierer, paddelschiene, und verfahren zum mischen Active EP2986365B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14718585.4A EP2986365B1 (de) 2013-04-17 2014-04-17 Konditionierer, paddelschiene, und verfahren zum mischen

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP13164024 2013-04-17
EP14718585.4A EP2986365B1 (de) 2013-04-17 2014-04-17 Konditionierer, paddelschiene, und verfahren zum mischen
PCT/EP2014/057936 WO2014170450A1 (de) 2013-04-17 2014-04-17 Paddel, paddelschiene, mischerwelle eines mischers, mischer und ein verfahren zum mischen

Publications (2)

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EP2986365A1 EP2986365A1 (de) 2016-02-24
EP2986365B1 true EP2986365B1 (de) 2021-03-10

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US (1) US10343125B2 (zh)
EP (1) EP2986365B1 (zh)
CN (1) CN105307761B (zh)
BR (1) BR112015026394B1 (zh)
DK (1) DK2986365T3 (zh)
ES (1) ES2864898T3 (zh)
WO (1) WO2014170450A1 (zh)

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DE102015219088A1 (de) * 2015-10-02 2017-04-06 Krones Ag Vorrichtung zum Durchmischen von Materialflocken und Mischelement
FR3051316B1 (fr) * 2016-05-23 2018-10-19 Seb S.A. Pale de melange pour appareil de preparation d'aliment pour animaux
TWM549657U (zh) * 2017-07-12 2017-10-01 de-yong Zhang 有機肥攪拌裝置
TWI732532B (zh) * 2019-04-24 2021-07-01 美商應用材料股份有限公司 用於在具有旋轉槳的固定的腔室中塗覆顆粒的反應器
KR102099155B1 (ko) * 2019-10-17 2020-05-22 대구환경공단 플라이 애쉬 안정화 장치
CN112675761B (zh) * 2020-12-16 2022-04-26 营口理工学院 基于船用q235钢模板防腐涂层的制备装置
US11890587B2 (en) * 2021-08-13 2024-02-06 Seattle Food Tech, Inc. Bidirectional fluted auger
BR202022009891U2 (pt) * 2022-05-20 2022-08-23 Silmo Lourenco De Avila Disposição construtiva em pás articuladas aplicada em equipamentos de mistura por tombamento

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Publication number Priority date Publication date Assignee Title
US5580170A (en) 1995-10-06 1996-12-03 Ferro-Tech, Inc. Mixing and conditioning machine
JP2002143666A (ja) 2000-11-14 2002-05-21 Kobe Steel Ltd ミキサ及びミキサ制御方法
JP2004129519A (ja) 2002-10-08 2004-04-30 Noritomi Tekkosho:Kk 有用微生物群を含む発酵資材の製造装置
US7195440B2 (en) * 2004-05-27 2007-03-27 Lambert Charles F Agricultural silo auger system apparatus and method
NL2000633C2 (nl) 2007-05-07 2008-11-10 Pelleting Technology Nederland Menginrichting.
EP2206549B1 (en) 2007-10-02 2015-05-20 Shin Nichinan CO., LTD Kneading apparatus
ES2560963T3 (es) 2011-02-28 2016-02-23 Sulzer Mixpac Ag Mezclador dinámico

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Also Published As

Publication number Publication date
EP2986365A1 (de) 2016-02-24
WO2014170450A1 (de) 2014-10-23
CN105307761B (zh) 2018-01-02
BR112015026394A2 (pt) 2017-07-25
BR112015026394B1 (pt) 2022-01-25
DK2986365T3 (da) 2021-05-25
CN105307761A (zh) 2016-02-03
US20160166997A1 (en) 2016-06-16
ES2864898T3 (es) 2021-10-14
US10343125B2 (en) 2019-07-09

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