WO2006108381A1 - Vorrichtung zum mischen und homogenisieren viskoser medien - Google Patents
Vorrichtung zum mischen und homogenisieren viskoser medien Download PDFInfo
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- WO2006108381A1 WO2006108381A1 PCT/DE2006/000561 DE2006000561W WO2006108381A1 WO 2006108381 A1 WO2006108381 A1 WO 2006108381A1 DE 2006000561 W DE2006000561 W DE 2006000561W WO 2006108381 A1 WO2006108381 A1 WO 2006108381A1
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- mixing
- boiler
- homogenizer
- elements
- mixing element
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/47—Mixing liquids with liquids; Emulsifying involving high-viscosity liquids, e.g. asphalt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/41—Emulsifying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
- B01F25/52—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle with a rotary stirrer in the recirculation tube
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- 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
- B01F27/40—Mixers with rotor-rotor system, e.g. with intermeshing teeth
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- 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
- B01F27/62—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis comprising liquid feeding, e.g. spraying means
- B01F27/621—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis comprising liquid feeding, e.g. spraying means the liquid being fed through the shaft of the stirrer
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- 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
- B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
- B01F27/704—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with stirrers facing each other, i.e. supported by opposite walls of the receptacle
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- 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
- B01F27/71—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with propellers
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- 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
- B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
- B01F27/724—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with a single helix closely surrounded by a casing
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- 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
- B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
- B01F27/726—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two helices with opposite pitch on the same shaft; with two helices on the same axis, driven in opposite directions or at different speeds
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- 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
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
- B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
- B01F35/1453—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids by means of jets of fluid, e.g. air
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- 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
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2113—Pressure
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- 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
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2115—Temperature
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- 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
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/213—Measuring of the properties of the mixtures, e.g. temperature, density or colour
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- 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
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
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- 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
- B01F35/45—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor
- B01F35/451—Closures or doors specially adapted for mixing receptacles; Operating mechanisms therefor by rotating them about an axis parallel to the plane of the opening
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- 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
- B01F35/751—Discharging by opening a gate, e.g. using discharge paddles
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- 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
- B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
- B01F35/7548—Discharge mechanisms characterised by the means for discharging the components from the mixer using tilting or pivoting means for emptying the mixing receptacle
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- 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
- B01F35/90—Heating or cooling systems
- B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2215/00—Auxiliary or complementary information in relation with mixing
- B01F2215/04—Technical information in relation with mixing
- B01F2215/0413—Numerical information
- B01F2215/0418—Geometrical information
- B01F2215/0422—Numerical values of angles
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- 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
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- 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
- B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
- B01F27/1145—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections ribbon shaped with an open space between the helical ribbon flight and the rotating axis
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- 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
- B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
- B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
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- 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
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- 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
- B01F27/61—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis about an inclined axis
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- 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
- B01F33/70—Mixers specially adapted for working at sub- or super-atmospheric pressure, e.g. combined with de-foaming
Definitions
- the invention relates to a device for mixing and homogenizing viscous media, with a cylindrical or trough-shaped, horizontally arranged vessel to whose longitudinal axis inside the boiler, a mixing element is rotatably guided.
- Such a device is known for example from DE 37 28 710 Al, which describes a mixer with mixer and crusher.
- the invention relates to the preparation of emulsions, such as creams of relatively high viscosity, an essential basic operation being homogenization, which is carried out in a so-called homogenizer.
- the mixing vessel or vessel containing the product to be homogenized, to which the homogenizer belongs, is equipped with a mixing device, the essential functions being: to ensure a uniform distribution of the contents of the vessel and of the material returned by the homogenizer; Heat supply and removal; Stripping the inner wall of the boiler, in particular to avoid encrustation and to improve the heat transfer; and replacing the contents of the vessel from bottom to top for improved degassing of the product.
- the known device a laterally mounted in the cylindrical container wall shredder or homogenizer is provided, resulting in the problem that a scraper, if it is additionally provided, could not strip an annular surface in the crusher.
- the known device pflugscharförmige mixing elements which mix the contents of the boiler, without providing a directed in the axial direction of flow.
- horizontal mixers have not been used for the preparation of emulsions, creams and ointments, although their use offers great advantages over vertical vessel mixers, such as a greater ratio of mantle surface to volume and thus better heat transfer; larger liquid surface and less liquid level (lower static pressure at the bottom and thus better degassing); lower overall height and therefore much easier installation in existing buildings; lateral opening and thus easier access to the process space; Possibility of two-sided storage of the agitator.
- the object of the invention is therefore to improve a generic device to the extent that it is (also) for the processing of viscous emulsions such as creams, etc. suitable.
- a device for mixing and homogenizing viscous media with a cylindrical or trough-shaped, horizontally arranged vessel to the longitudinal axis inside the boiler, a mixing element is rotatably guided, wherein the device is characterized in that under the boiler a Homogenizer is arranged, the inlet of which is connected to a bottom of the boiler and the outlet is connected via a Umpumptechnisch with a remote from the inlet point of the boiler, wherein the mixing member has a wiper member for stripping the cylindrical inner wall of the boiler. It can be provided that the wiper member is designed for stripping the substantially entire inner surface of the boiler, ie both the cylindrical surface and at least one of the frontal surfaces.
- a plurality of scraper elements are offset in the circumferential direction and arranged overlapping one another in the axial direction.
- the wiper member may comprise at least one hollow cylinder segment.
- the mixing element is designed to generate a circulating flow within the boiler.
- the mixing element can have at least one mixing spiral.
- the mixing element is designed to generate an axial flow in the direction of or away from the homogenizer.
- the mixing element has at least two coaxial mixing elements.
- the mixing element can have two opposing mixing elements.
- the mixing element can have two mixing elements, one of which can be arranged on an end-side side wall (cover) and another on an opposite end-side side wall (cover).
- the mixing elements can be provided with independent drives.
- the boiler is held tiltable about a horizontal axis.
- the boiler is provided with an overhead Inspektionsöffiiung, which is closed with a removable lid.
- the invention provides that the boiler has at least one openable frontal, pivotable about a vertical axis side wall.
- the boiler is provided with a depression in the region of the homogenizer.
- the homogenizer can be flanged directly to the boiler, such as with its housing, and without intermediate switching of a separate supply line.
- cleaning nozzles are arranged on the mixing element.
- FIG. 1 shows a schematic longitudinal section and an end view of a device according to the invention
- Fig. 2 shows a cross-sectional shape of a cylindrical and a trough-shaped vessel
- Fig. 5 shows a coaxial mixing element
- Fig. 6 shows an embodiment with two agitators
- FIG. 8 shows a perspective view of a support structure for a three-arm mixing element (anchor basket),
- Fig. 10 shows an example of a device with a boiler provided with a side wall to be opened
- Fig. 11 shows various arrangements of a pumping line
- Fig. 12 illustrates the arrangement of cleaning nozzles on a mixing device.
- Fig. 1 illustrates the basic structure of a device according to the invention, which has a horizontal, cylindrical vessel 2 with a about a longitudinal axis 4 of the boiler rotatable, helical mixing element 6 and arranged below the boiler homogenizer 8.
- the mixing element 6 may have a continuous spiral helix or a plurality of helical elements 41 which each extend over an angular range of for example 240 ° and are arranged overlapping each other.
- the cylindrical vessel 2 is closed at a first end with a fixedly connected to the cylindrical outer wall 10 cover 12, while closed on the opposite side by a pivotable about a vertical axis 14 and held on a hinge 15 lid 16 and after its opening in its full cross-section is accessible.
- 10 shows a device according to the invention with the lid closed and opened, which is provided with a sight glass 17.
- a bearing 20 for the mixing member 6 and a drive 24 are arranged.
- the homogenizer 8 is connected to its inlet 8a at a lowest point of the vessel 2, wherein for the sake of favorable processability of relatively viscous media connecting the inlet 8a of the homogenizer with the boiler discharge line is either omitted or kept very short, so that the product starting from the boiler by the shortest route into the homogenizer.
- the homogenizer can be flanged with its housing directly to the boiler.
- the homogenizer is arranged in an axial end position of the boiler 2, but may, depending on the configuration of the boiler and the mixing element or agitator, optionally be arranged in the middle. The positioning shown is particularly favorable, since with the lid 16 open easily inspection, maintenance, etc. of the homogenizer can be performed.
- the boiler 2 rests on a relatively low frame 26 on the floor 28, so that easy access to all essential parts without ladders, scaffolding, etc. is given, regardless of the length of the boiler.
- the boiler is double-walled in the region of its cylindrical central portion and the left cover 12, wherein an inner wall with 2a and an outer wall with 2b is designated.
- the boiler is vacuum-proof and pressure-resistant within the operational requirements. After homogenization, evacuation must often degas, so that a void volume in an upper area of the boiler is appropriate.
- a dome can be placed in a conventional manner.
- the boiler can in principle be completely filled, an operation with a partial filling of less than 90% of the maximum filling is preferred, in particular a partial filling between 70% and 80% of the maximum filling.
- a partial filling between 70% and 80% of the maximum filling.
- the ratio of heat transfer area to volume is significantly higher, especially for a horizontal boiler, due to the relatively slimmer configuration of the filler relative to a comparable vertical boiler.
- the homogenizing and cooling times are adjusted to the degree of filling.
- the vessel is ideally cylindrical (cross-sectional shape "a"), but may also be designed as a trough (cross-sectional shape "b"), as shown in FIG. 2.
- the filling height should be chosen so that product wetting is present only in a heated or cooled and stripped area.
- the boiler can be easily tilted or tilted.
- a tiltability by a maximum of 45 ° is favorable, hl in this case, the emptying of the homogenizer or laterally arranged bottom outlet can be ensured.
- FIG. 3 and 4 show different variants of the support and pivotal mounting of a tiltable about a horizontal axis 21 boiler.
- a drive indicated at 23 serves to pivot the boiler.
- the mixing element is wall-mounted and has scrapers.
- scraper elements are designated 44, wherein these are arranged offset axially and circumferentially along the mixing element. Stripping elements are preferably also arranged in the lid areas.
- helical ribbon spiral-shaped mixing element
- the mixing element effects a direction-dependent transport of product towards one side of the vessel, thereby producing a Transport to the homogenizer or, if the direction of rotation changes, can be ensured.
- mixing devices that cause a circulation of the product within the boiler. This can be done for example via an external 40a and an internal 40b helix or screw, with reference to FIG. 5.
- a change in the direction of rotation of the mixing element changes the flow direction of the product.
- Inner and outer helix 40a, b have opposite directions of action. This causes not only a circulation but also a mild shearing of the product and thus mixing between adjacent fluid layers.
- FIG. 5 In a counterclockwise rotation, seen from the left in FIG. 5, the conveying effects and directions indicated by arrows are obtained.
- the schematic frontal plan view shown on the right in FIG. 5 symbolizes the spatial arrangement of the mixing spirals, wherein - as seen from the left on the left - an increasing degree of blackening means a decreasing distance of the respective point of the filament from the observer (standing to the left of the device). The same applies to the illustration of FIG. 10.
- Another advantageous embodiment involves a coaxial agitator, i. an external mixing element and a lying on a separate shaft, coaxially arranged inner mixing element.
- the mixing elements can be driven by independent drives and in the same or in opposite directions of rotation.
- FIG. 6 shows a preferred variant in which an outer, relatively slow-running mixing element (armature with mixing spiral (s)) 36 is arranged on the fixed cover 12 and a central, relatively schneaufende second mixing element 38 (mixing propeller with two or more wings) is arranged on the lid 16 to be opened. Both mixing elements are provided with their own, separately controllable drives 24a, 24b. If the homogenizer is arranged centrally or centrally below the vessel, and a directional mixing element such as a mixing helix is used, two helixes 40, which promote the center from both sides, should be provided, as shown in FIG.
- armature with mixing spiral (s) armature with mixing spiral (s)
- the support structure of the radially outwardly disposed mixing element also referred to as anchor or anchor basket, requires at least one arm, for example two or three arms.
- anchor or anchor basket requires at least one arm, for example two or three arms.
- Fig. 8 shows a perspective view of such an armature with three arms 42.
- the boiler inner surface is indicated by circular contours. At one end (or both) of the anchor basket is stored in one or both lids of the boiler.
- the required stripping elements are suitably designed so that they are easily replaceable.
- it should additionally be shaped in such a way that they run idle in the vertical direction or the product runs off easily.
- a preferred variant of a stripping element 44 is shown in FIG. 9 at the top in the form of a hollow cylinder segment which is inclined differently depending on the direction of rotation.
- the stripping element 44 is preferably made of fluorinated plastic.
- the outer surface is preferably not machined to obtain the natural smoothness of the extrusion process.
- a variant 44a of a scraper element (FIG. 9, middle and bottom)
- its hollow cylinder segment is slightly inclined with its axis 45 with respect to the longitudinal axis 4 of the bowl (angle ⁇ ), with longitudinal edges of the scraper element being arcuately matched to the inner surface of the vessel. In this way, the stripping elements support the directional effect of the mixing element.
- PVDF polyvinylene
- a plurality of stripping elements are offset in the circumferential direction and arranged overlapping each other in the axial direction, so that an overlapping stripping behavior is achieved. Since there is a certain shaft deflection due to the horizontal shaft of the mixing element, larger distances between the spar and the scraper are to be considered in comparison to the vertical boiler. This can be ensured by means of a correspondingly wider scraper, whereby it is also possible with this property to use boilers with less precise roundness.
- the sealing of the shaft of the mixing element as well as the sealing of the homogenizer shaft is in contact with the product.
- the seal is designed differently, for example as a radial shaft seal, product-lubricated mechanical seal or double-acting mechanical seal with sealing medium.
- the at least one shaft of the mixing device can be mounted on one or both sides.
- a one-sided storage with bottom open basket (anchor) allows the use of additional stirrers from the other side and facilitates the design of the side cover.
- Fig. 11 illustrates different possibilities of arranging a pumping line 46, which prevents that coming from the outlet 8b of the homogenizer coming homogenized product re-enters the homogenizer again.
- Possible end points of the pumped circulation line 46 are denoted by 48 to 56, wherein 48 denotes a short return near the homogenizer 8, 52 a long return near the homogenizer, 54 a short return on the opposite side of the homogenizer and 56 a long return on the opposite side of the homogenizer ,
- a short recirculation occurs at low fill levels.
- a short return such that it is centrally located in a lower region of the boiler.
- the return can open tangentially, so that it supports the circulating flow.
- the mixing device To achieve the most complete discharge or a small residual amount within the boiler, it is favorable in addition to the measures already mentioned (mixing element with conveying direction to the homogenizer, smooth scraper) when the mixing device has a relatively small surface area.
- the mixing device itself can be provided with suitable scrapers and thereby be cleaned of product.
- CIP cleaning in place
- the cleaning takes place, for example, through nozzles arranged in the boiler jacket, which can be arranged such that they can be moved outwards
- nozzles 60 may be provided on or in the mixing device, as shown in Fig. 12, so that an ideal approach of the cleaning liquid to all desired positions is possible
- the feed takes place via a central shaft 22.
- the nozzles can be extendable.
- the entire arrangement is preferably regulated by a programmable logic controller.
- Sensors for pressure, temperature, flow, pH, particle size and / or other product properties provide the required input signals.
- Major advantages of the present invention are: good mixing; large heat transfer surface and short process times; low height (installation in low buildings possible); Elimination of elaborate Deckelhub respondeden (required for vertical boiler); easy access to the homogenizer for inspections; good degassing (large surface); no stage; easy product feeding and access on both sides resulting in great variability for the design of the mixing device.
- Homogenizer a Inlet b Outlet 0 Outer wall 2 Lid (side wall) 4 Swivel axis 5 Hinge 6 Lid (side wall) 7 Sight glass 0 Bearing 1 Axis 2 Shaft 3 Swivel drive 4 Drive 4a, 24b Drive 6 Rack 8 Bottom 6 First mixing element 8 Second mixing element 0 Mixing spiral 0a inner helix 0b outer helix 1 helical element 2 arm 4 wiper element 4a inclined wiper element 5 axis 6 pumping line 8 short return long return short return 6 long return angle
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE502006001697T DE502006001697D1 (de) | 2005-04-12 | 2006-03-30 | R medien |
EP06722713A EP1885482B1 (de) | 2005-04-12 | 2006-03-30 | Vorrichtung zum mischen und homogenisieren viskoser medien |
DE112006001559T DE112006001559A5 (de) | 2005-04-12 | 2006-03-30 | Vorrichtung zum Mischen und Homogenisieren viskoser Medien |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE202005006133.6 | 2005-04-12 | ||
DE200520006133 DE202005006133U1 (de) | 2005-04-12 | 2005-04-12 | Vorrichtung zum Mischen und Homogenisieren viskoser Medien |
Publications (2)
Publication Number | Publication Date |
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WO2006108381A1 true WO2006108381A1 (de) | 2006-10-19 |
WO2006108381A8 WO2006108381A8 (de) | 2008-01-03 |
Family
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PCT/DE2006/000561 WO2006108381A1 (de) | 2005-04-12 | 2006-03-30 | Vorrichtung zum mischen und homogenisieren viskoser medien |
Country Status (4)
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EP (1) | EP1885482B1 (de) |
AT (1) | ATE409517T1 (de) |
DE (3) | DE202005006133U1 (de) |
WO (1) | WO2006108381A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105329677A (zh) * | 2015-09-29 | 2016-02-17 | 湖南海尚环境生物科技股份有限公司 | 物料循环搅拌机构及其控制使用方法和无水型生态厕所 |
CN110736335A (zh) * | 2019-10-21 | 2020-01-31 | 安徽金尚机械制造有限公司 | 悬浮炉进糠装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006022660A1 (de) | 2006-05-12 | 2007-11-15 | Gebrüder Lödige Maschinenbau -Gesellschaft mit beschränkter Haftung | Mischer mit Abstreifern |
CN102489206A (zh) * | 2011-11-14 | 2012-06-13 | 桂林电子科技大学 | 粉粒体垃圾搅拌机 |
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DE1184325B (de) * | 1960-07-30 | 1964-12-31 | Draiswerke Gmbh | Mischmaschine |
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DE1782585A1 (de) * | 1968-09-20 | 1971-10-14 | Draiswerke Gmbh | Mischmaschine |
US4860960A (en) * | 1987-08-28 | 1989-08-29 | Gebruder Lodige Maschinenbaugesellschaft Mbh | Mixing apparatus containing a mixer and a pulveriser |
EP0786288A1 (de) * | 1996-01-24 | 1997-07-30 | F. Zettl GmbH & Co. | Verfahren zum Granulieren von Schlämmen |
JPH10296065A (ja) * | 1997-04-28 | 1998-11-10 | Kao Corp | 混合方法および混合装置 |
EP1142471A1 (de) * | 2000-04-06 | 2001-10-10 | Egidio Pecis | Mischer zur Vorbereitung von Futtermitteln |
US20020176319A1 (en) * | 2000-12-19 | 2002-11-28 | Huber Gordon R. | System for homogeneously mixing plural incoming product streams of different composition |
-
2005
- 2005-04-12 DE DE200520006133 patent/DE202005006133U1/de not_active Expired - Lifetime
-
2006
- 2006-03-30 EP EP06722713A patent/EP1885482B1/de not_active Not-in-force
- 2006-03-30 DE DE502006001697T patent/DE502006001697D1/de active Active
- 2006-03-30 AT AT06722713T patent/ATE409517T1/de active
- 2006-03-30 WO PCT/DE2006/000561 patent/WO2006108381A1/de active IP Right Grant
- 2006-03-30 DE DE112006001559T patent/DE112006001559A5/de not_active Ceased
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DE1184325B (de) * | 1960-07-30 | 1964-12-31 | Draiswerke Gmbh | Mischmaschine |
DE1276986B (de) * | 1962-03-10 | 1968-09-05 | Fritz Loedige | Pflugscharaehnliches Mischwerkzeug |
DE1432028A1 (de) * | 1964-02-18 | 1968-10-31 | Draiswerke Gmbh | Verfahren zum Betrieb von Mischmaschinen sowie zugehoerige Mischmaschine |
DE1782585A1 (de) * | 1968-09-20 | 1971-10-14 | Draiswerke Gmbh | Mischmaschine |
US4860960A (en) * | 1987-08-28 | 1989-08-29 | Gebruder Lodige Maschinenbaugesellschaft Mbh | Mixing apparatus containing a mixer and a pulveriser |
EP0786288A1 (de) * | 1996-01-24 | 1997-07-30 | F. Zettl GmbH & Co. | Verfahren zum Granulieren von Schlämmen |
JPH10296065A (ja) * | 1997-04-28 | 1998-11-10 | Kao Corp | 混合方法および混合装置 |
EP1142471A1 (de) * | 2000-04-06 | 2001-10-10 | Egidio Pecis | Mischer zur Vorbereitung von Futtermitteln |
US20020176319A1 (en) * | 2000-12-19 | 2002-11-28 | Huber Gordon R. | System for homogeneously mixing plural incoming product streams of different composition |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105329677A (zh) * | 2015-09-29 | 2016-02-17 | 湖南海尚环境生物科技股份有限公司 | 物料循环搅拌机构及其控制使用方法和无水型生态厕所 |
CN110736335A (zh) * | 2019-10-21 | 2020-01-31 | 安徽金尚机械制造有限公司 | 悬浮炉进糠装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1885482A1 (de) | 2008-02-13 |
EP1885482B1 (de) | 2008-10-01 |
WO2006108381A8 (de) | 2008-01-03 |
DE202005006133U1 (de) | 2005-06-23 |
DE502006001697D1 (de) | 2008-11-13 |
ATE409517T1 (de) | 2008-10-15 |
DE112006001559A5 (de) | 2008-03-20 |
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