EP1475143B1 - Apparatus for dispersing or homogenising - Google Patents

Apparatus for dispersing or homogenising Download PDF

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Publication number
EP1475143B1
EP1475143B1 EP04007370A EP04007370A EP1475143B1 EP 1475143 B1 EP1475143 B1 EP 1475143B1 EP 04007370 A EP04007370 A EP 04007370A EP 04007370 A EP04007370 A EP 04007370A EP 1475143 B1 EP1475143 B1 EP 1475143B1
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EP
European Patent Office
Prior art keywords
pump
tool
dispersing
line
homogenising
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.)
Expired - Lifetime
Application number
EP04007370A
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German (de)
French (fr)
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EP1475143A8 (en
EP1475143A2 (en
EP1475143A3 (en
Inventor
Jörg Gassenschmidt
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IKA Werke GmbH and Co KG
Original Assignee
IKA Werke GmbH and Co KG
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Publication date
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Priority to PL04007370T priority Critical patent/PL1475143T3/en
Publication of EP1475143A2 publication Critical patent/EP1475143A2/en
Publication of EP1475143A8 publication Critical patent/EP1475143A8/en
Publication of EP1475143A3 publication Critical patent/EP1475143A3/en
Application granted granted Critical
Publication of EP1475143B1 publication Critical patent/EP1475143B1/en
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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
    • B01F23/50—Mixing liquids with solids
    • B01F23/53—Mixing liquids with solids using driven stirrers
    • 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
    • B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
    • 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
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/81—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow
    • B01F27/811—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump
    • B01F27/8111—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis the stirrers having central axial inflow and substantially radial outflow with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump the stirrers co-operating with stationary guiding elements, e.g. surrounding stators or intermeshing stators
    • 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
    • B01F35/7544—Discharge mechanisms characterised by the means for discharging the components from the mixer using pumps
    • 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
    • B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle

Definitions

  • the invention relates to a device for dispersing and / or homogenizing with a dispersing and / or homogenizing tool, in which a pumpable substance or a pumpable mixture is mixed with at least one additive, wherein the pumpable substance or the like from a container, in particular from a container or from a tube to which the dispersing and / or homogenizing tool can be fed and for which the additives or feeds are provided in the supply line of the pumpable substance in front of the tool, wherein the supply line and the supply line are concentric with each other at least in the area of the orifice are.
  • a structurally comparable device is known from DE 196 29 945 A1 and has proven itself. In this case, however, a dry material or free-flowing solid material is fed centrally and liquid from the side concentrically, and from this initially a pumpable mixture is formed with the aid of mixing tools, which mixture is fed to the dispersing and / or homogenizing tool in this form.
  • a substance of high viscosity with sufficient fluidity can be understood as meaning, for example, a cream, a dental gel or a substance having an approximately honey-like consistency.
  • the device defined above is characterized in that in the feed direction of the substance at a distance in front of the dispersing and / or homogenizing and before the mouth of the supply line at least one pump is arranged, the pump pressure in the flow direction in the mouth of the Supply line is less than the suction pressure of the dispersing and / or homogenizing tool.
  • the pumpable or flowable substance before the access of the additive or additives is exposed to a conveying effect by a pump, so that this substance, despite its relatively high viscosity of the dispersing or homogenizing, hereinafter also referred to as "homogenizer” is supplied without its tearing off. Nevertheless, from the one or more supply lines, a respective additive can be sucked in and entrained and thereby reach the homogenizer. Thus, at the required point, the suction effect of the homogenizer can be effective without having to completely suck in the pumpable substance.
  • the pump ensures that, in spite of its high viscosity, this pumpable substance reaches into the area of the suction effect of the homogenizer or supports this suction, so that the additive (s) can also be entrained in order to be dispersed and / or homogenized together.
  • An embodiment of the invention of quite considerable, possibly even own worthy of protection importance may be that in the supply of the pumpable substance from the pump to the mouth of the supply line, a means for changing or reducing the cross section of this supply line is arranged.
  • the device can be adapted to pumpable substances of different viscosities or possibly to substances whose viscosity changes during processing, for example when a part of the pumpable substance is branched off and returned to the container and then transported again through the pump and the supply line.
  • the viscosity may change when starting the device and thus during a corresponding process, for example, when gradually adding certain thickening or diluting the pumpable and flowable material, for example, before entering the pump, that is the means for Changing or reducing the cross-section of the supply line can be helpful especially in a start-up phase of the device or the process performed by this device.
  • the result behind the homogenizer may vary in viscosity due to additives, so that, for this reason, throttling or increasing the cross section of the feed line and thus the amount of the pumpable substance may be expedient in order to be able to set a desired end result.
  • this possibility of changing or reducing the cross section of the feed line is advantageous because the device can be used for starting materials of different viscosities and can be optimally adapted to these different viscosities of different substances.
  • a further embodiment of the invention may consist in that the device for changing the cross section of the supply line is designed as a shut-off device and that in particular a return line is branched into the container between the pump and the device for changing the cross section of the supply line.
  • the supply line can not only be changed in its cross-section, but also be completely closed. This is particularly useful if the pumpable and flowable material from the container is to be pumped back into this, for example, this substance, which may contain several components, first better pre-mix before it is fed to the homogenizer and before entering the Homogenizer with one or more Additives is brought together.
  • this arrangement with a shut-off device and at least one return line has the advantage that the device can be cleaned well by circulating a corresponding cleaning liquid with the aid of the pump and introduced into the container as high as possible or even via spray heads provided there.
  • the pump or the pump impeller is arranged on the same shaft as the dispersing and / or homogenizing and if between the pressure-side pump chamber and the shaft and the concentrically arranged especially within the supply line for the Additive is arranged a shaft acting on this seal, which separates the pressure part of the pump from the suction region of the additive in the supply line.
  • a single drive motor is needed in this way. At the same time, it is ensured that the entry of the additive into the pumpable substance is as even as possible.
  • the concentrically arranged supply line and supply line is also arranged concentrically to the shaft sealingly passing through it for the pump and the dispersing and / or homogenizing tool.
  • annular channels for the pumpable substance and the additive (s) result, whereby the correspondingly sealed and shielded shaft runs from the homogenizer to the pump through the innermost ring. This also leads to a compact space-saving arrangement.
  • an outlet line may be provided, which may in particular be returned to the container in front of the pump.
  • a filling line or filling fitting can be provided, which can be connected via a fitting, for example a three-way cock, with the outlet and return line.
  • the outlet line can open into the recirculation line going out immediately behind the pump, and a shut-off device, in particular in the form of a three-way cock, can be arranged at the mouth.
  • a shut-off device in particular in the form of a three-way cock, can be arranged at the mouth.
  • a portion of the recycle line can serve both to return the pumpable material before it enters the homogenizer and to mix and homogenize it with an additive.
  • the suction effect of the dispersing and / or homogenizing tool can be reinforced by at least one arranged in the conveying direction behind this tool and / or at the entrance to this tool and in particular connected to the tool pump blades. This is particularly advantageous if the pumpable substance and / or the additives have a high viscosity.
  • At least one stirring tool can be arranged in the container.
  • the container vertically above the pump and the pump are arranged vertically above the dispersing and / or homogenizing and if the supply and the supply line in the area before the dispersing and / or homogenizing, so in particular in the region of their concentric arrangement, are directed downward.
  • the promotion of the often highly viscous substances supported by gravity are expedient if the container vertically above the pump and the pump are arranged vertically above the dispersing and / or homogenizing and if the supply and the supply line in the area before the dispersing and / or homogenizing, so in particular in the region of their concentric arrangement, are directed downward.
  • the supply line for the additive may be formed in front of this area arranged concentrically to the feed line leading laterally to this area.
  • this supply line to the container as close as possible, run as close as possible below the container to its concentric region in a vertical arrangement.
  • the mouth of the feed line into the feed line can be provided at the entrance to the dispersing and / or homogenizing tool. The closer the mouth is arranged to the homogenizer, the more effective is its suction effect.
  • the dispersing and / or homogenizing tool may be a rotor-stator device with, in particular, a plurality of rotor toothed rings and / or stator rings in a concentric arrangement with one another. A correspondingly intensive homogenizing effect is possible.
  • a device that can be used separately or installed in pipelines. It can be used advantageously in mixing and emulsifying plants and preferably have a mixing tank with central bottom outlet leading to the pump.
  • an external circulation line which is led out of the container in the bottom outlet and laterally leads back into a riser in the upper part of the container to enhance the mixing effect and used for a good cleaning.
  • the arrangement of the homogenizing and / or dispersing tool in a circulation line which leads back into the container, allows more effective and intensive dispersion or homogenization of the mix and allows additional functions such as pumping and especially circulation of the mix and later a cleaning medium.
  • a device denoted as a whole by 1 is used for dispersing and / or homogenizing and has for this purpose a dispersing and / or homogenizing tool 2, also referred to as “homogenizer” 2 or optionally “tool” 2, recognizable above all in FIG.
  • a dispersing and / or homogenizing tool 2 also referred to as "homogenizer” 2 or optionally “tool” 2, recognizable above all in FIG.
  • a pumpable and flowable substance or a corresponding pumpable substance mixture can be mixed with at least one additive.
  • the pumpable substance from a container, in the embodiment of a container 3, which may be at least partially also double-walled according to Figures 1 and 2, the homogenizer 2 via a supply line 4, which is at least partially a pumping chamber in the embodiment, zuleitbar ,
  • a Supply line 5 is provided, which opens into the supply line 4 in front of the tool 2, wherein the supply line 5 and the supply line 4 at least in the region of the mouth 6 and before run concentric to each other.
  • a pump 7 is arranged, whose impeller, especially in FIG. 2, can be clearly seen below a bottom outlet 8 a of the container 3 is.
  • the downwardly directed pump pressure in the flow direction in the embodiment is less in the region of the mouth 6 of the supply line 5 than the suction pressure of the dispersing and / or homogenizing tool 2, so that even at high viscosity, the flow of the substance can not tear off before this orifice 6, the means by this measure it is ensured that at the mouth 6 of the material coming from the container 3 flows at a high viscosity in a desired amount to flow together with an appropriate amount of the additive and then mixed and / or homogenized can.
  • the supply line 4 of the pumpable material can be seen between the pump 7 and the mouth 6 means for changing or reducing the cross section of this supply line 4, which is formed in the embodiment as a shut-8, so that by this shut-off device 8 either only partially Operation, the amount of the pumpable substance throttled or the flow can be completely shut off.
  • shut-off device 8 allows adaptation to different viscosities of this substance, which can either occur during the process itself or must be taken into account when treated with the device 1 sequentially different substances.
  • the pump 7 or its pump impeller is arranged on the same shaft 10 as the dispersing and / or homogenizing tool 2, so that only a single drive 11, for example the motor shown in FIG 12 with belt drive 13, is required.
  • a single drive 11 for example the motor shown in FIG 12 with belt drive 13
  • a shaft 10 acting on the seal 14 is arranged which separates the pressure part of the pump 7 from the suction area in the supply line 5 and the mouth 6.
  • the concentrically arranged supply line 4 and supply line 5 with its area 5a are also arranged concentrically to the sealed shaft passing through them 10 and separated by a shaft sleeve enclosing the shaft 15 of this.
  • an outlet line 16 is provided, the course of which is shown mainly in FIG.
  • the outlet pipe 16 is returned in a manner to be described in the container 3 in front of the pump 7.
  • a filling line 17 is provided with filling fitting 18 at the recirculating into the container 3 outlet 16, so that via this valve 18, for example, a three-way valve, the filling line 17 is connected to the outlet or return line 9, which in still to be described manner with the outlet pipe 16 is in communication or forms part of it.
  • a shut-off valve 19 is arranged in the form of a three-way cock, so that from this shut-off valve 19, the return line 9 and the outlet 16 a common line, which leads to the filling line 17 on the one hand and in the container 3 on the other.
  • the mixture formed in the homogenizer 2 can either be filled or likewise pumped one or more times in order to increase the concentration of the feed in the end product.
  • the important for the uniform supply of the substance and the additive suction of the dispersing and / or homogenizing tool 2 is in the exemplary embodiment by a downstream in the conveying direction of this tool 2 and an am Entrance into this tool 2 arranged pump blades 20 and 21 reinforced.
  • the container or the container 3 is located vertically above the pump 7 and the pump 7 is in turn vertically above the homogenizer 2, so that the supply line 4 and the concentric region 5 a of the supply line 5 are directed downwards in the region before the homogenizer 2, so that the conveyance of the substance to the homogenizer 2 is supported by gravity, which is advantageous in particular for substances of high viscosity.
  • the supply line 5 is in front of its concentric to the feed line 4 arranged area 5a side leading to this area 5a leader, so that they can extend below the container 3 to save space.
  • 1 shows a filling or metering funnel 23, through which an additive can be introduced into the supply line 5.
  • the mouth 6 of the supply line 5 or its concentric region 5 a in the supply line 4 is provided directly at the entrance to the dispersing and / or homogenizing tool 2 in order to make the best possible use of its suction effect.
  • This dispersing and / or homogenizing tool 2 is a rotor-stator device with a plurality of rotor sprockets and stator sprockets in a concentric arrangement in order to be able to work effectively.
  • the shut-off device 8 is closed.
  • this shut-off device 8 is only partially closed and used as a throttle, the flow coming from the pump 7 is throttled. In this case, one can choose the throttling so that the pumping action or the suction of the subsequent homogenizer is greater than that of the pump 7. This creates a negative pressure between the homogenizer 2 and pump 7, which then rests against the inlet for the additive. By opening a valve 24 provided there, the additive can be sucked out of the feed hopper 23, which may be liquid or powdery substances. Applying vacuum or negative pressure to the mixing tank 3 is not required, but can further improve the suction performance.
  • the device 1 has a dispersing and / or homogenizing tool 2 and on the same shaft 10, a pump 7, whereby a pumpable substance from a container, in particular a container 3 or a tube, the dispersing and / or homogenizing tool 2 is zuleitbar.
  • This substance can be mixed in the dispersing and homogenizing tool 2 with an additive which passes through a feed line 5 and a region 5a arranged concentrically to the feed line 4 to an opening 6 in front of the dispersing and homogenizing tool 2.
  • a device for changing or reducing the cross section of this supply line 4 that is arranged a throttle, which is preferably designed as a shut-off device 8 in order to complete the supply line 4 completely.

Abstract

Device for dispersing and/or homogenizing comprises a pump (7) arranged in the feed direction of the material at a distance from a dispersing and/or homogenizing tool (2) and in front of the opening (6) of a feed line (5). The pumping pressure of the pump is lower in the region of the opening of the feed line than the suction pressure of the dispersing and/or homogenizing tool.

Description

Die Erfindung betrifft eine Vorrichtung zum Dispergieren und/oder Homogenisieren mit einem Dispergier- und/oder Homogenisierwerkzeug, in welchem ein pumpfähiger Stoff oder eine pumpfähige Mischung mit wenigstens einem Zusatzstoff vermischt wird, wobei der pumpfähige Stoff oder dergleichen aus einem Behältnis, insbesondere aus einem Behälter oder aus einem Rohr, dem Dispergier-und/oder Homogenisierwerkzeug zuleitbar ist und für den oder die Zusatzstoffe eine Zuführleitung vorgesehen ist, die in die Zuleitung des pumpfähigen Stoffs vor dem Werkzeug mündet, wobei die Zuführleitung und die Zuleitung zumindest im Bereich der Mündung konzentrisch zueinander sind.The invention relates to a device for dispersing and / or homogenizing with a dispersing and / or homogenizing tool, in which a pumpable substance or a pumpable mixture is mixed with at least one additive, wherein the pumpable substance or the like from a container, in particular from a container or from a tube to which the dispersing and / or homogenizing tool can be fed and for which the additives or feeds are provided in the supply line of the pumpable substance in front of the tool, wherein the supply line and the supply line are concentric with each other at least in the area of the orifice are.

Eine konstruktiv vergleichbare Vorrichtung ist aus DE 196 29 945 A1 bekannt und hat sich bewährt. Dabei wird aber zentral ein Trockenmaterial oder rieselfähiger Feststoff und von der Seite her konzentrisch Flüssigkeit zugeführt und daraus zunächst mit Hilfe von Mischwerkzeugen eine pumpfähige Mischung gebildet, die in dieser Form dem Dispergier- und/oder Homogenisierwerkzeug zugeleitet wird.A structurally comparable device is known from DE 196 29 945 A1 and has proven itself. In this case, however, a dry material or free-flowing solid material is fed centrally and liquid from the side concentrically, and from this initially a pumpable mixture is formed with the aid of mixing tools, which mixture is fed to the dispersing and / or homogenizing tool in this form.

Wird hingegen einem pumpfähigem Stoff insbesondere mit hoher Viskosität ein Zusatzstoff zugeführt und zugemischt, besteht die Gefahr, dass die Saugwirkung des Dispergier- und/oder Homogenisierwerkzeugs trotz daran eventuell vorgesehener Pumpflügel nicht ausreicht, um den pumpfähigen Stoff anzusaugen und gleichzeitig eine ausreichend hohe Saugkraft zu erzeugen, um außerdem den oder die Zusatzstoffe entsprechend anzusaugen, um beide Stoffe gemeinsam durch das Dispergier- und/oder Homogenisierwerkzeug befördern zu können.If, on the other hand, an additive is added to and added to a pumpable substance, in particular with high viscosity, there is a risk that the suction effect of the dispersing and / or homogenizing tool will not suffice to suck in the pumpable substance and at the same time produce a sufficiently high suction force, despite possibly provided pumping wings in order to additionally suck in the additive (s) in order to convey both substances together through the dispersing and / or homogenizing tool.

Dokument EP-A-1 155 733 offenbart auch eine konstructiv vergleichbare Vorrichtung.Document EP-A-1 155 733 also discloses a device of comparable construction.

Es besteht deshalb die Aufgabe, eine Vorrichtung der eingangs genannten Art zu schaffen, mit der auch Stoffe hoher Viskosität mit ausreichender Fließfähigkeit verarbeitet und mit Zusatzstoffen durch Homogenisieren und/oder Dispergieren vermischt werden können.There is therefore the object to provide a device of the type mentioned, with which also high viscosity materials can be processed with sufficient flowability and mixed with additives by homogenizing and / or dispersing.

Dabei kann unter einem Stoff hoher Viskosität mit ausreichender Fließfähigkeit beispielsweise eine Creme, ein Zahngel oder ein Stoff mit etwa honigartiger Konsistenz verstanden werden.In this case, a substance of high viscosity with sufficient fluidity can be understood as meaning, for example, a cream, a dental gel or a substance having an approximately honey-like consistency.

Zur Lösung der vorstehend genannten Aufgabe ist die eingangs definierte Vorrichtung dadurch gekennzeichnet, dass in Zuführrichtung des Stoffes mit Abstand vor dem Dispergier-und/oder Homogenisierwerkzeug und vor der Mündung der Zuführleitung wenigstens eine Pumpe angeordnet ist, deren Pumpendruck in Fließrichtung im Bereich der Mündung der Zuführleitung geringer als der Saugdruck des Dispergier-und/oder Homogenisierwerkzeugs ist.To achieve the above object, the device defined above is characterized in that in the feed direction of the substance at a distance in front of the dispersing and / or homogenizing and before the mouth of the supply line at least one pump is arranged, the pump pressure in the flow direction in the mouth of the Supply line is less than the suction pressure of the dispersing and / or homogenizing tool.

Auf diese Weise wird erreicht, dass der pump- oder fließfähige Stoff vor dem Zutritt des oder der Zusatzstoffe einer Förderwirkung durch eine Pumpe ausgesetzt wird, so dass dieser Stoff trotz seiner relativ hohen Viskosität dem Dispergier- oder Homogenisierwerkzeug, im folgenden auch kurz "Homogenisator" genannt, zugeführt wird, ohne dass seine Strömung abreißt. Dennoch kann aus der oder den Zuführleitungen ein jeweiliger Zusatzstoff angesaugt und mitgerissen werden und dadurch in den Homogenisator gelangen. Somit kann an der erforderlichen Stelle die Saugwirkung des Homogenisators wirksam werden, ohne den pumpfähigen Stoff vollständig ansaugen zu müssen. Durch die Pumpe wird sichergestellt, dass dieser pumpfähige Stoff trotz seiner hohen Viskosität bis in den Bereich der Saugwirkung des Homogenisators gelangt beziehungsweise diese Saugwirkung unterstützt, so dass auch der oder die Zusatzstoffe mitgenommen werden, um dann gemeinsam dispergiert und/oder homogenisiert werden zu können.In this way it is achieved that the pumpable or flowable substance before the access of the additive or additives is exposed to a conveying effect by a pump, so that this substance, despite its relatively high viscosity of the dispersing or homogenizing, hereinafter also referred to as "homogenizer" is supplied without its tearing off. Nevertheless, from the one or more supply lines, a respective additive can be sucked in and entrained and thereby reach the homogenizer. Thus, at the required point, the suction effect of the homogenizer can be effective without having to completely suck in the pumpable substance. The pump ensures that, in spite of its high viscosity, this pumpable substance reaches into the area of the suction effect of the homogenizer or supports this suction, so that the additive (s) can also be entrained in order to be dispersed and / or homogenized together.

Eine Ausgestaltung der Erfindung von ganz erheblicher, unter Umständen sogar eigener schutzwürdiger Bedeutung kann darin bestehen, dass in der Zuleitung des pumpfähigen Stoffs von der Pumpe zu der Mündung der Zuleitung eine Einrichtung zum Verändern oder Verkleinern des Querschnitts dieser Zuleitung angeordnet ist. Dadurch kann die Vorrichtung an pumpfähige Stoffe unterschiedlicher Viskositäten oder eventuell an Stoffe angepasst werden, deren Viskosität sich während der Bearbeitung verändert, wenn beispielsweise ein Teil des pumpfähigen Stoffs abgezweigt und in das Behältnis zurückgeführt und dann erneut durch die Pumpe und die Zuleitung befördert wird. Ferner kann sich die Viskosität beim Anfahren der Vorrichtung und damit während eines entsprechenden Prozesses ändern, beispielsweise wenn nach und nach bestimmte Verdickungs- oder Verdünnungsmittel dem pump-und fließfähigen Stoff beispielsweise vor dem Eintritt in die Pumpe zugegeben werden, das heißt die Einrichtung zum Verändern oder Verkleinern des Querschnitts der Zuleitung kann vor allem auch in einer Startphase der Vorrichtung beziehungsweise des von dieser Vorrichtung durchgeführten Prozesses hilfreich sein.An embodiment of the invention of quite considerable, possibly even own worthy of protection importance may be that in the supply of the pumpable substance from the pump to the mouth of the supply line, a means for changing or reducing the cross section of this supply line is arranged. Thereby, the device can be adapted to pumpable substances of different viscosities or possibly to substances whose viscosity changes during processing, for example when a part of the pumpable substance is branched off and returned to the container and then transported again through the pump and the supply line. Further, the viscosity may change when starting the device and thus during a corresponding process, for example, when gradually adding certain thickening or diluting the pumpable and flowable material, for example, before entering the pump, that is the means for Changing or reducing the cross-section of the supply line can be helpful especially in a start-up phase of the device or the process performed by this device.

Ferner kann durch Zusatzstoffe das Ergebnis hinter dem Homogenisator in seiner Viskosität schwanken, so dass auch deshalb eine Drosselung oder eine Vergrößerung des Querschnitts der Zuleitung und damit der Menge des pumpfähigen Stoffs zweckmäßig sein kann, um ein gewünschtes Endergebnis einstellen zu können.Furthermore, the result behind the homogenizer may vary in viscosity due to additives, so that, for this reason, throttling or increasing the cross section of the feed line and thus the amount of the pumpable substance may be expedient in order to be able to set a desired end result.

Schließlich ist diese Möglichkeit der Veränderung oder Verkleinerung des Querschnitts der Zuleitung vorteilhaft, weil dadurch die Vorrichtung für Ausgangsstoffe unterschiedlicher Viskositäten einsetzbar ist und an diese unterschiedlichen Viskositäten verschiedener Stoffe jeweils optimal angepasst werden kann.Finally, this possibility of changing or reducing the cross section of the feed line is advantageous because the device can be used for starting materials of different viscosities and can be optimally adapted to these different viscosities of different substances.

Eine weitere Ausgestaltung der Erfindung kann dabei darin bestehen, dass die Einrichtung zum Verändern des Querschnitts der Zuleitung als Absperrvorrichtung ausgebildet ist und dass zwischen der Pumpe und der Einrichtung zum Verändern des Querschnitts der Zuleitung insbesondere eine Rückführleitung in das Behältnis abgezweigt ist.A further embodiment of the invention may consist in that the device for changing the cross section of the supply line is designed as a shut-off device and that in particular a return line is branched into the container between the pump and the device for changing the cross section of the supply line.

Somit kann die Zuleitung nicht nur in ihrem Querschnitt verändert, sondern auch vollständig geschlossen werden. Dabei ist dies vor allem dann zweckmäßig, wenn der pumpfähige und fließfähige Stoff aus dem Behältnis wieder in dieses zurückgepumpt werden soll, um beispielsweise diesen Stoff, der mehrere Komponenten enthalten kann, zunächst besser vorzumischen, bevor er dem Homogenisator zugeführt und vor dem Eintritt in den Homogenisator mit einem oder mehreren Zusatzstoffen zusammengebracht wird. Darüber hinaus hat diese Anordnung mit einer Absperrvorrichtung und wenigstens einer Rückführleitung den Vorteil, dass die Vorrichtung gut gereinigt werden kann, indem mit Hilfe der Pumpe eine entsprechende Reinigungsflüssigkeit umgepumpt und in dem Behälter möglichst hoch beziehungsweise sogar über dort vorgesehene Sprühköpfe eingeleitet wird.Thus, the supply line can not only be changed in its cross-section, but also be completely closed. This is particularly useful if the pumpable and flowable material from the container is to be pumped back into this, for example, this substance, which may contain several components, first better pre-mix before it is fed to the homogenizer and before entering the Homogenizer with one or more Additives is brought together. Moreover, this arrangement with a shut-off device and at least one return line has the advantage that the device can be cleaned well by circulating a corresponding cleaning liquid with the aid of the pump and introduced into the container as high as possible or even via spray heads provided there.

Für eine günstige konstruktive Lösung ist es besonders vorteilhaft, wenn die Pumpe oder das Pumpenlaufrad auf der selben Welle wie das Dispergier- und/oder Homogenisierwerkzeug angeordnet ist und wenn zwischen dem druckseitigen Pumpenraum und der Welle sowie der konzentrisch insbesondere innerhalb der Zuleitung angeordneten Zuführleitung für den Zusatzstoff eine diese Welle beaufschlagende Dichtung angeordnet ist, die den Druckteil der Pumpe von dem Saugbereich des Zusatzstoffs in der Zuführleitung trennt. Für die Pumpe und den Homogenisator wird auf diese Weise nur ein einziger Antriebsmotor benötigt. Gleichzeitig wird sichergestellt, dass der Eintrag des Zusatzstoffs in den pumpfähigen Stoff möglichst gleichmäßig erfolgt.For a favorable design solution, it is particularly advantageous if the pump or the pump impeller is arranged on the same shaft as the dispersing and / or homogenizing and if between the pressure-side pump chamber and the shaft and the concentrically arranged especially within the supply line for the Additive is arranged a shaft acting on this seal, which separates the pressure part of the pump from the suction region of the additive in the supply line. For the pump and the homogenizer only a single drive motor is needed in this way. At the same time, it is ensured that the entry of the additive into the pumpable substance is as even as possible.

Dabei ist es zweckmäßig, wenn die konzentrisch zueinander angeordnete Zuleitung und Zuführleitung auch konzentrisch zu der sie abgedichtet durchsetzende Welle für die Pumpe und das Dispergier- und/oder Homogenisierwerkzeug angeordnet ist. Es ergeben sich also im Bereich des konzentrischen Verlaufs von Zuführleitung und Zuleitung in ihrem Querschnitt ringförmige Kanäle für den pumpfähigen Stoff und den oder die Zusatzstoffe, wobei durch den innersten Ring die entsprechend abgedichtete und abgeschirmte Welle von dem Homogenisator zu der Pumpe verläuft. Dies führt auch zu einer kompakten platzsparenden Anordnung.It is expedient if the concentrically arranged supply line and supply line is also arranged concentrically to the shaft sealingly passing through it for the pump and the dispersing and / or homogenizing tool. Thus, in the region of the concentric course of supply line and supply line, annular channels for the pumpable substance and the additive (s) result, whereby the correspondingly sealed and shielded shaft runs from the homogenizer to the pump through the innermost ring. This also leads to a compact space-saving arrangement.

In Förderrichtung hinter dem Dispergier- und/oder Homogenisierwerkzeug kann eine Auslassleitung vorgesehen sein, die insbesondere in das Behältnis vor der Pumpe zurückgeführt sein kann. Dadurch ist es möglich, dass der Ausgangsstoff aus dem Behältnis allmählich mehr und mehr mit einem oder mehreren Zusatzstoffen vermischt und immer wieder zurückbefördert wird, bis eine gewünschte Gesamtmischung hergestellt ist, die auch einen entsprechenden Grad an Homogenität aufweist.In the conveying direction behind the dispersing and / or homogenizing tool, an outlet line may be provided, which may in particular be returned to the container in front of the pump. This makes it possible that the starting material from the container gradually mixed more and more with one or more additives and repeatedly conveyed back until a desired total mixture is prepared, which also has a corresponding degree of homogeneity.

Zusätzlich zu der oder vorzugsweise an der in das Behältnis zurückführenden Auslassleitung kann eine Abfüllleitung oder Abfüllarmatur vorgesehen sein, die über eine Armatur, beispielsweise einen Dreiwegehahn, mit der Auslass- und Rückführleitung verbunden sein kann.In addition to or preferably at the outlet line leading back into the container, a filling line or filling fitting can be provided, which can be connected via a fitting, for example a three-way cock, with the outlet and return line.

Um also das aus dem Homogenisator kommende Ergebnis abführen zu können kann eine eigene Abfüllleitung oder Abfüllarmatur oder bevorzugt eine an der schon erwähnten, in das Behältnis zurückführenden Auslassleitung vorgesehene Abzweigung als Abfüllleitung oder Abfüllarmatur vorgesehen sein, die in letzterem Falle dann beispielsweise über eine Zweiwegehahn wahlweise geöffnet oder abgesperrt sein kann, wenn ein Zurückführen der Mischung in das Behältnis gewünscht wird.Thus, in order to be able to dissipate the result coming from the homogenizer, a separate filling line or filling fitting or preferably provided at the already mentioned, in the container recirculating outlet line provided branch as a filling line or filling fitting, which then opened in the latter case, for example via a two-way cock or shut off when recycling the mixture into the container is desired.

Die Auslassleitung kann in die unmittelbar hinter der Pumpe abgehende Rückführleitung münden und an der Mündung kann eine Absperrarmatur insbesondere in Form eines Dreiwegehahns angeordnet sein. Somit kann ein Teil der Rückführleitung sowohl zum Zurückleiten des pumpfähigen Stoffs vor seinem Eintritt in den Homogenisator als auch des mit einem Zusatzstoff vermischten und homogenisierten Stoffs dienen.The outlet line can open into the recirculation line going out immediately behind the pump, and a shut-off device, in particular in the form of a three-way cock, can be arranged at the mouth. Thus, a portion of the recycle line can serve both to return the pumpable material before it enters the homogenizer and to mix and homogenize it with an additive.

Die Saugwirkung des Dispergier- und/oder Homogenisierwerkzeugs kann durch wenigstens einen in Förderrichtung hinter diesem Werkzeug und/oder am Eingang in dieses Werkzeug angeordneten und insbesondere mit dem Werkzeug verbundene Pumpenflügel verstärkt sein. Dies ist insbesondere dann von Vorteil, wenn der pumpfähige Stoff und/oder die Zusatzstoffe eine hohe Viskosität haben.The suction effect of the dispersing and / or homogenizing tool can be reinforced by at least one arranged in the conveying direction behind this tool and / or at the entrance to this tool and in particular connected to the tool pump blades. This is particularly advantageous if the pumpable substance and / or the additives have a high viscosity.

In Förderrichtung vor der Pumpe kann in dem Behältnis wenigstens ein Rührwerkzeug angeordnet sein. Dadurch kann die Vormischung des pump- und fließfähigen Stoffs, der häufig selbst schon eine Mischung mehrerer Bestandteile ist, vor dem Eintritt in die Pumpe verbessert werden.In the conveying direction in front of the pump, at least one stirring tool can be arranged in the container. Thereby, the premix of the pumpable and flowable substance, which itself is often already a mixture of several components, be improved before entering the pump.

Für eine gute Förderwirkung des oder der Stoffe hoher Viskosität ist es zweckmäßig, wenn das Behältnis vertikal oberhalb der Pumpe und die Pumpe vertikal oberhalb des Dispergier- und/oder Homogenisierwerkzeugs angeordnet sind und wenn die Zuleitung und die Zuführleitung im Bereich vor dem Dispergier- und/oder Homogenisierwerkzeug, also insbesondere im Bereich ihrer konzentrischen Anordnung, abwärts gerichtet sind. Somit wird die Förderung der häufig hoch viskosen Stoffe durch die Schwerkraft unterstützt.For a good conveying effect of the material or substances of high viscosity, it is expedient if the container vertically above the pump and the pump are arranged vertically above the dispersing and / or homogenizing and if the supply and the supply line in the area before the dispersing and / or homogenizing, so in particular in the region of their concentric arrangement, are directed downward. Thus, the promotion of the often highly viscous substances supported by gravity.

Die Zuführleitung für den Zusatzstoff kann vor ihrem konzentrisch zu der Zuleitung angeordneten Bereich seitlich zu diesem Bereich führend ausgebildet sein. Somit kann diese Zuführleitung dem Behältnis möglichst nah, bei vertikaler Anordnung möglichst dicht unterhalb des Behältnisses zu ihrem konzentrischen Bereich verlaufen.The supply line for the additive may be formed in front of this area arranged concentrically to the feed line leading laterally to this area. Thus, this supply line to the container as close as possible, run as close as possible below the container to its concentric region in a vertical arrangement.

Die Mündung der Zuführleitung in die Zuleitung kann am Eintritt in das Dispergier- und/oder Homogenisierwerkzeug vorgesehen sein. Je näher die Mündung an dem Homogenisator angeordnet ist, um so wirksamer ist dessen Saugwirkung.The mouth of the feed line into the feed line can be provided at the entrance to the dispersing and / or homogenizing tool. The closer the mouth is arranged to the homogenizer, the more effective is its suction effect.

Das Dispergier- und/oder Homogenisierwerkzeug kann ein Rotor-Stator-Gerät mit insbesondere mehreren Rotor-Zahnkränzen und/oder Stator-Kränzen in konzentrischer Anordnung zueinander sein. Eine entsprechend intensive Homogenisierwirkung ist dadurch möglich.The dispersing and / or homogenizing tool may be a rotor-stator device with, in particular, a plurality of rotor toothed rings and / or stator rings in a concentric arrangement with one another. A correspondingly intensive homogenizing effect is possible.

Vor allem bei Kombination einzelner oder mehrerer der vorbeschriebenen Merkmale und Maßnahmen ergibt sich eine Vorrichtung, die separat genutzt oder auch in Rohrleitungen eingebaut werden kann. Sie kann vorteilhaft in Misch- und Emulgieranlagen eingesetzt werden und bevorzugt einen Mischbehälter mit zentralem Bodenablass haben, der zu der Pumpe führt. Dabei kann eine externe Zirkulationsleitung, die im Bodenablass aus dem Behälter herausgeführt wird und seitlich in eine Steigleitung in den oberen Teil des Behälters zurückführt die Mischwirkung verstärken und für eine gute Reinigung eingesetzt werden. Die Anordnung des Homogenisier- und/oder Dispergierwerkzeugs in einer Umlaufleitung, die in den Behälter zurückführt, ermöglicht eine effektivere und intensivere Dispergierung oder Homogenisierung des Mischguts und ermöglicht zusätzliche Funktionen wie Abpumpen und vor allem Umwälzen des Mischgutes und später eines Reinigungsmediums.Especially when combining one or more of the features and measures described above results in a device that can be used separately or installed in pipelines. It can be used advantageously in mixing and emulsifying plants and preferably have a mixing tank with central bottom outlet leading to the pump. In this case, an external circulation line, which is led out of the container in the bottom outlet and laterally leads back into a riser in the upper part of the container to enhance the mixing effect and used for a good cleaning. The arrangement of the homogenizing and / or dispersing tool in a circulation line, which leads back into the container, allows more effective and intensive dispersion or homogenization of the mix and allows additional functions such as pumping and especially circulation of the mix and later a cleaning medium.

Nachstehend ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher beschrieben. Es zeigt in zum Teil schematisierter Darstellung:

Fig. 1
eine teilweise im Längsschnitt gehaltene Seitenansicht einer erfindungsgemäßen Vorrichtung zum Dispergieren und/oder Homogenisieren mit einem als Behälter ausgebildeten Behältnis mit Bodenablass unter welchem eine Pumpe auf der selben Welle wie ein demgegenüber tiefer liegendes Dispergier- und/oder Homogenisierwerkzeug angeordnet ist, wobei zwischen dem Pumpenlaufrad und dem Dispergier- und/oder Homogenisierwerkzeug eine Zuführleitung für Zusatzstoffe konzentrisch zu der Zuleitung von der Pumpe zu dem Werkzeug verläuft, sowie
Fig. 2
in vergrößertem Maßstab einen Längsschnitt durch den Bodenbereich des Behälters, die darunter befindliche Pumpe, die Zuleitung von der Pumpe zu dem Dispergier- und Homogenisierwerkzeug mit der in diesem Bereich konzentrisch angeordneten Zuführleitung für einen Zusatzstoff, wobei der in Fig. 1 deutlicher dargestellte, aus Motor und Getriebe bestehende Antrieb der gemeinsamen Welle für Dispergier- und Homogenisierwerkzeug und Pumpe schematisiert angedeutet ist.
An embodiment of the invention will be described in more detail below with reference to the drawing. It shows in partly schematized representation:
Fig. 1
a partially longitudinally sectioned side view of a device according to the invention for dispersing and / or homogenizing with a container designed as a container with bottom outlet under which a pump on the same Shaft is arranged as a contrast lying deeper dispersing and / or homogenizing tool, wherein between the pump impeller and the dispersing and / or homogenizing a supply line for additives concentric with the supply line from the pump to the tool, and
Fig. 2
on an enlarged scale a longitudinal section through the bottom portion of the container, the pump below it, the supply from the pump to the dispersing and homogenizing tool with the supply line for an additive concentrically arranged in this area, the more clearly shown in Fig. 1, from motor and gear existing drive the common shaft for dispersing and homogenizing tool and pump is indicated schematically.

Eine im Ganzen mit 1 bezeichnete Vorrichtung dient zum Dispergieren und/oder Homogenisieren und weist dazu ein vor allem in Fig.2 erkennbares Dispergier- und/oder Homogenisierwerkzeug 2, im folgenden auch "Homogenisator" 2 oder gegebenenfalls "Werkzeug" 2 genannt, auf. Mit diesem Homogenisator 2 kann ein pumpfähiger und fließfähiger Stoff oder eine entsprechende pumpfähige Stoffmischung mit wenigstens einem Zusatzstoff vermischt werden.A device denoted as a whole by 1 is used for dispersing and / or homogenizing and has for this purpose a dispersing and / or homogenizing tool 2, also referred to as "homogenizer" 2 or optionally "tool" 2, recognizable above all in FIG. With this homogenizer 2, a pumpable and flowable substance or a corresponding pumpable substance mixture can be mixed with at least one additive.

Zu diesem Zweck ist der pumpfähige Stoff aus einem Behältnis, im Ausführungsbeispiel aus einem Behälter 3, der gemäß Fig.1 und 2 zumindest bereichsweise auch doppelwandig sein kann, dem Homogenisator 2 über eine Zuleitung 4, die im Ausführungsbeispiel zumindest bereichsweise eine Pumpkammer ist, zuleitbar. Für den oder die Zusatzstoffe ist eine Zuführleitung 5 vorgesehen, die in die Zuleitung 4 vor dem Werkzeug 2 mündet, wobei die Zuführleitung 5 und die Zuleitung 4 zumindest im Bereich der Mündung 6 sowie davor konzentrisch zueinander verlaufen. Diese Anordnung erkennt man besonders deutlich in Fig.2.For this purpose, the pumpable substance from a container, in the embodiment of a container 3, which may be at least partially also double-walled according to Figures 1 and 2, the homogenizer 2 via a supply line 4, which is at least partially a pumping chamber in the embodiment, zuleitbar , For the additive (s) is a Supply line 5 is provided, which opens into the supply line 4 in front of the tool 2, wherein the supply line 5 and the supply line 4 at least in the region of the mouth 6 and before run concentric to each other. This arrangement can be seen particularly clearly in Fig.2.

In Zuführrichtung des Stoffes mit Abstand vor dem Dispergier-und/oder Homogenisierwerkzeug 2 und vor der Mündung 6 des konzentrischen Bereichs 5a der Zuführleitung 5 ist eine Pumpe 7 angeordnet, deren Laufrad vor allem in Fig.2 deutlich unterhalb einem Bodenablass 8a des Behälters 3 erkennbar ist. Der im Ausführungsbeispiel abwärts gerichtete Pumpendruck in Fließrichtung ist dabei im Bereich der Mündung 6 der Zuführleitung 5 geringer als der Saugdruck des Dispergier-und/oder Homogenisierwerkzeugs 2, so dass selbst bei hoher Viskosität der Strom des Stoffes nicht vor dieser Mündung 6 abreissen kann, das heißt durch diese Maßnahme ist sichergestellt, dass an der Mündung 6 der aus dem Behälter 3 kommende Stoff auch bei hoher Viskosität in einer gewünschten Menge zufließt, um mit einer entsprechenden Menge des Zusatzstoffs zusammenfließen und dann gemischt und/oder homogenisiert werden zu können.In the feed direction of the substance at a distance in front of the dispersing and / or homogenizing tool 2 and in front of the mouth 6 of the concentric region 5 a of the supply line 5, a pump 7 is arranged, whose impeller, especially in FIG. 2, can be clearly seen below a bottom outlet 8 a of the container 3 is. The downwardly directed pump pressure in the flow direction in the embodiment is less in the region of the mouth 6 of the supply line 5 than the suction pressure of the dispersing and / or homogenizing tool 2, so that even at high viscosity, the flow of the substance can not tear off before this orifice 6, the means by this measure it is ensured that at the mouth 6 of the material coming from the container 3 flows at a high viscosity in a desired amount to flow together with an appropriate amount of the additive and then mixed and / or homogenized can.

In der Zuleitung 4 des pumpfähigen Stoffs erkennt man zwischen der Pumpe 7 und der Mündung 6 eine Einrichtung zum Verändern oder Verkleinern des Querschnitts dieser Zuleitung 4, die dabei im Ausführungsbeispiel als Absperrvorrichtung 8 ausgebildet ist, so dass durch diese Absperrvorrichtung 8 entweder bei einer nur teilweisen Betätigung die Menge des pumpfähigen Stoffs gedrosselt oder aber der Durchfluss völlig abgesperrt werden kann.In the supply line 4 of the pumpable material can be seen between the pump 7 and the mouth 6 means for changing or reducing the cross section of this supply line 4, which is formed in the embodiment as a shut-8, so that by this shut-off device 8 either only partially Operation, the amount of the pumpable substance throttled or the flow can be completely shut off.

Ferner ist zwischen der Pumpe 7 und dieser Einrichtung zur Veränderung des Querschnitts oder Absperrvorrichtung 8 eine Rückführleitung 9 abgezweigt, die gemäß Fig.1 in das Behältnis beziehungsweise den Behälter 3 zurückführt und ein Umpumpen von dessen Inhalt oder von Reinigungsflüssigkeit erlaubt. Ein Umpumpen kann vor allem dann zweckmäßig sein, wenn diesem fließfähigen Stoff Additive vor oder innerhalb des Behälters 3 zugefügt werden sollen, bevor er dann mit dem Zusatzstoff vermischt und homogenisiert wird.Further, between the pump 7 and this means for changing the cross section or shut-off device 8 a Return line 9 diverted, which leads back according to Figure 1 in the container or the container 3 and a pumping of its contents or cleaning liquid allowed. Pumping over may be particularly useful if additives are to be added to this flowable substance before or within the container 3, before it is then mixed with the additive and homogenized.

Ferner erlaubt diese Absperrvorrichtung 8 eine Anpassung an unterschiedliche Viskositäten dieses Stoffes, die entweder während des Prozesses selbst auftreten können oder aber dann berücksichtigt werden müssen, wenn mit der Vorrichtung 1 nacheinander unterschiedliche Stoffe behandelt werden.Furthermore, this shut-off device 8 allows adaptation to different viscosities of this substance, which can either occur during the process itself or must be taken into account when treated with the device 1 sequentially different substances.

Vor allem in Fig.2 erkennt man deutlich, dass die Pumpe 7 oder ihr Pumpenlaufrad auf der selben Welle 10 wie das Dispergier- und/oder Homogenisierwerkzeug 2 angeordnet ist, so dass nur ein einziger Antrieb 11, beispielsweise der in Fig.1 dargestellte Motor 12 mit Riementrieb 13, erforderlich ist. Zwischen dem druckseitigen Pumpenraum, dem unmittelbar im Bereich der Pumpe 7 befindlichen Teil der Zuleitung 4, und der Welle 10 sowie der innerhalb der Zuleitung 4 angeordneten Zuführleitung 5 und ihres konzentrisch zu der Zuleitung 4 angeordneten Bereichs 5a ist eine die Welle 10 beaufschlagende Dichtung 14 angeordnet, die den Druckteil der Pumpe 7 von dem Saugbereich in der Zuführleitung 5 und der Mündung 6 trennt. Somit ist die in der Zeichnung dargestellte kompakte Bauweise möglich.Above all, it can be clearly seen in FIG. 2 that the pump 7 or its pump impeller is arranged on the same shaft 10 as the dispersing and / or homogenizing tool 2, so that only a single drive 11, for example the motor shown in FIG 12 with belt drive 13, is required. Between the pressure-side pump chamber, located directly in the area of the pump 7 part of the supply line 4, and the shaft 10 and arranged within the supply line 4 supply 5 and its concentrically arranged to the supply line 4 region 5a a shaft 10 acting on the seal 14 is arranged which separates the pressure part of the pump 7 from the suction area in the supply line 5 and the mouth 6. Thus, the compact design shown in the drawing is possible.

Die konzentrisch zueinander angeordnete Zuleitung 4 und Zuführleitung 5 mit ihrem Bereich 5a sind dabei auch konzentrisch zu der sie abgedichtet durchsetzenden Welle 10 angeordnet und durch ein die Welle umschließendes Wellenhülse 15 von dieser getrennt.The concentrically arranged supply line 4 and supply line 5 with its area 5a are also arranged concentrically to the sealed shaft passing through them 10 and separated by a shaft sleeve enclosing the shaft 15 of this.

In Förderrichtung hinter dem Homogenisator 2 ist eine Auslassleitung 16 vorgesehen, deren Verlauf vor allem in Fig.1 dargestellt ist. In diesem Ausführungsbeispiel ist die Auslassleitung 16 in noch zu beschreibender Weise in den Behälter 3 vor der Pumpe 7 zurückgeführt. Dabei ist an der in den Behälter 3 zurückführenden Auslassleitung 16 eine Abfüllleitung 17 mit Abfüllarmatur 18 vorgesehen, so dass über diese Armatur 18, beispielsweise einen Dreiwegehahn, die Abfüllleitung 17 mit der Auslass- oder Rückführleitung 9 verbunden ist, welche in noch zu beschreibender Weise mit der Auslassleitung 16 in Verbindung steht oder diese zu einem Teil bildet.In the conveying direction behind the homogenizer 2, an outlet line 16 is provided, the course of which is shown mainly in FIG. In this embodiment, the outlet pipe 16 is returned in a manner to be described in the container 3 in front of the pump 7. In this case, a filling line 17 is provided with filling fitting 18 at the recirculating into the container 3 outlet 16, so that via this valve 18, for example, a three-way valve, the filling line 17 is connected to the outlet or return line 9, which in still to be described manner with the outlet pipe 16 is in communication or forms part of it.

Man erkennt nämlich in Fig.1, dass die Auslassleitung 16 in die unmittelbar hinter der Pumpe 7 abgehende Rückführleitung 9 mündet und an der Mündung eine Absperrarmatur 19 in Form eines Dreiwegehahns angeordnet ist, so dass ab dieser Absperrarmatur 19 die Rückführleitung 9 und die Auslassleitung 16 eine gemeinsame Leitung sind, die zu der Abfüllleitung 17 einerseits und in den Behälter 3 andererseits führt.It can be seen in Fig.1 that the outlet 16 opens into the immediately downstream of the pump 7 outgoing return line 9 and at the mouth of a shut-off valve 19 is arranged in the form of a three-way cock, so that from this shut-off valve 19, the return line 9 and the outlet 16 a common line, which leads to the filling line 17 on the one hand and in the container 3 on the other.

Es kann also nicht nur der Stoff aus dem Behälter 3 über die Leitung 9 umgepumpt werden, sondern es kann auch die in dem Homogenisator 2 gebildete Mischung entweder abgefüllt oder ebenfalls ein oder mehrfach umgepumpt werden, um die Konzentration des Zuführstoffes in dem Endprodukt zu vergrößern.Thus, not only can the substance be pumped out of the container 3 via the line 9, but also the mixture formed in the homogenizer 2 can either be filled or likewise pumped one or more times in order to increase the concentration of the feed in the end product.

Die für das gleichmäßige Zuführen des Stoffes und des Zusatzstoffes wichtige Saugwirkung des Dispergier- und/oder Homogenisierwerkzeugs 2 ist im Ausführungsbeispiel durch einen in Förderrichtung hinter diesem Werkzeug 2 und einen am Eingang in dieses Werkzeug 2 angeordneten Pumpenflügel 20 und 21 verstärkt.The important for the uniform supply of the substance and the additive suction of the dispersing and / or homogenizing tool 2 is in the exemplary embodiment by a downstream in the conveying direction of this tool 2 and an am Entrance into this tool 2 arranged pump blades 20 and 21 reinforced.

Ferner erkennt man in Förderrichtung vor der Pumpe 7 und ihrem Laufrad in dem Behältnis im Bereich von dessen Bodenabfluss 8a ein Rührwerkzeug 22, wodurch der Stoff vor dem Eintritt in die Pumpe 7 vorgemischt werden kann, wenn er seinerseits aus mehreren Bestandteilen besteht.Furthermore, one recognizes in the conveying direction before the pump 7 and its impeller in the container in the region of the bottom drain 8a a stirring tool 22, whereby the substance can be premixed before entering the pump 7, if it in turn consists of several components.

Das Behältnis beziehungsweise der Behälter 3 befindet sich vertikal oberhalb der Pumpe 7 und die Pumpe 7 befindet sich ihrerseits vertikal oberhalb des Homogeniators 2, so dass die Zuleitung 4 und der konzentrische Bereich 5a der Zuführleitung 5 im Bereich vor dem Homogenisator 2 abwärts gerichtet sind, so dass die Beförderung des Stoffes zu dem Homogenisator 2 durch die Schwerkraft unterstützt wird, was vor allem bei Stoffen hoher Viskosität vorteilhaft ist.The container or the container 3 is located vertically above the pump 7 and the pump 7 is in turn vertically above the homogenizer 2, so that the supply line 4 and the concentric region 5 a of the supply line 5 are directed downwards in the region before the homogenizer 2, so that the conveyance of the substance to the homogenizer 2 is supported by gravity, which is advantageous in particular for substances of high viscosity.

Die Zuführleitung 5 ist dabei vor ihrem konzentrisch zu der Zuleitung 4 angeordneten Bereich 5a seitlich zu diesem Bereich 5a führend ausgebildet, so dass sie platzsparend unterhalb dem Behälter 3 verlaufen kann. In Fig.1 erkennt man einen Füll- oder Dosiertrichter 23, durch den ein Zusatzstoff in die Zuführleitung 5 eingebracht werden kann.The supply line 5 is in front of its concentric to the feed line 4 arranged area 5a side leading to this area 5a leader, so that they can extend below the container 3 to save space. 1 shows a filling or metering funnel 23, through which an additive can be introduced into the supply line 5.

Die Mündung 6 der Zuführleitung 5 beziehungsweise ihres konzentrischen Bereichs 5a in die Zuleitung 4 ist unmittelbar am Eintritt in das Dispergier- und/oder Homogenisierwerkzeug 2 vorgesehen, um dessen Saugwirkung bestmöglich auszunutzen. Dieses Dispergier- und/oder Homogenisierwerkzeug 2 ist dabei ein Rotor-Stator-Gerät mit mehreren Rotor-Zahnkränzen und Stator-Zahnkränzen in konzentrischer Anordnung, um entsprechend effektiv arbeiten zu können.The mouth 6 of the supply line 5 or its concentric region 5 a in the supply line 4 is provided directly at the entrance to the dispersing and / or homogenizing tool 2 in order to make the best possible use of its suction effect. This dispersing and / or homogenizing tool 2 is a rotor-stator device with a plurality of rotor sprockets and stator sprockets in a concentric arrangement in order to be able to work effectively.

Mit dem Rührwerkzeug 22 können im unteren Bereich des Mischbehälters 3 Turbulenzen erzeugt werden, so dass eine Sedimentation von Mischgut vermieden wird. Gleichzeitig ist dadurch die Möglichkeit zur Bearbeitung auch von kleinen Mengen gegeben. Eine solche Bearbeitung von kleinen Mengen ist besonders vorteilhaft in Verbindung mit einem konisch gestalteten Behälter und Zirkulationsleitungen, die das Mischgut auch tiefer als in Fig.1 dargestellt, dem Mischbehälter wieder zuführen können. Mit Hilfe der Leitung 9 ist ein Umpumpen des Mischguts ohne Scherung, also ohne Benutzung des Homogenisators 2 aber auch mit Scherung, also nach dem Durchlaufen des Homogenisators 2 möglich. Dabei kann gegebenenfalls durch Änderungen der Drehzahl ein weiterer Effekt erzielt werden. Ferner kann eine Reinigungsflüssigkeit umgepumpt werden, um die einzelnen Komponenten der Vorrichtung 1 reinigen zu können.With the stirring tool 22 3 turbulence can be generated in the lower region of the mixing container, so that a sedimentation of mix is avoided. At the same time, this makes it possible to process even small quantities. Such processing of small quantities is particularly advantageous in connection with a conically shaped container and circulation lines, which can also feed the mix more deeply than shown in Figure 1, the mixing container again. With the help of the line 9 is a pumping of the mix without shear, so without using the homogenizer 2 but also with shear, so after passing through the homogenizer 2 possible. It may optionally be achieved by changing the speed of another effect. Furthermore, a cleaning liquid can be pumped around in order to clean the individual components of the device 1 can.

Für ein Umpumpen ohne Benutzung des Homogenisators wird die Absperrvorrichtung 8 geschlossen.For a pumping around without using the homogenizer, the shut-off device 8 is closed.

Wird diese Absperrvorrichtung 8 nur teilweise geschlossen und als Drossel benutzt, wird der von der Pumpe 7 kommende Förderstrom gedrosselt. Dabei kann man die Drosselung so wählen, dass die Pumpwirkung beziehungsweise die Saugwirkung des nachfolgenden Homogenisators größer als die der Pumpe 7 wird. Dadurch entsteht ein Unterdruck zwischen Homogenisator 2 und Pumpe 7, der dann an dem Einlass für den Zusatzstoff anliegt. Durch Öffnen eines dort vorgesehenen Ventils 24 kann der Zusatzstoff aus dem Zuführtrichter 23 eingesaugt werden, wobei es sich um flüssige oder auch pulverförmige Stoffe handeln kann. Ein Anlegen von Vakuum oder Unterdruck am Mischbehälter 3 ist nicht erforderlich, kann aber die Einsaugleistung weiter verbessern.If this shut-off device 8 is only partially closed and used as a throttle, the flow coming from the pump 7 is throttled. In this case, one can choose the throttling so that the pumping action or the suction of the subsequent homogenizer is greater than that of the pump 7. This creates a negative pressure between the homogenizer 2 and pump 7, which then rests against the inlet for the additive. By opening a valve 24 provided there, the additive can be sucked out of the feed hopper 23, which may be liquid or powdery substances. Applying vacuum or negative pressure to the mixing tank 3 is not required, but can further improve the suction performance.

Die Vorrichtung 1 weist ein Dispergier- und/oder Homogenisierwerkzeug 2 und auf der selben Welle 10 eine Pumpe 7 auf, womit ein pumpfähiger Stoff aus einem Behältnis, insbesondere einem Behälter 3 oder einem Rohr, dem Dispergier- und/oder Homogenisierwerkzeug 2 zuleitbar ist. Dieser Stoff kann in dem Dispergier- und Homogenisierwerkzeug 2 mit einem Zusatzstoff vermischt werden, der durch eine Zuführleitung 5 und einen konzentrisch zu der Zuleitung 4 angeordneten Bereich 5a zu einer Mündung 6 vor dem Dispergier- und Homogenisierwerkzeug 2 gelangt. Die mit Abstand vor der Mündung 6 und vor dem Dispergier- und Homogenisierwerkzeug 2 angeordnete Pumpe 7 hat dabei in Fließrichtung einen Pumpendruck, der im Bereich dieser Mündung 6 geringer als der Saugdruck des Werkzeugs 2 ist. Dabei kann zur Beeinflussung dieses Drucks in der Zuleitung 4 eine Einrichtung zur Veränderung oder Verkleinerung des Querschnitts dieser Zuleitung 4, also eine Drossel angeordnet sein, die bevorzugt als Absperrvorrichtung 8 ausgebildet ist, um die Zuleitung 4 auch vollständig abschließen zu können.The device 1 has a dispersing and / or homogenizing tool 2 and on the same shaft 10, a pump 7, whereby a pumpable substance from a container, in particular a container 3 or a tube, the dispersing and / or homogenizing tool 2 is zuleitbar. This substance can be mixed in the dispersing and homogenizing tool 2 with an additive which passes through a feed line 5 and a region 5a arranged concentrically to the feed line 4 to an opening 6 in front of the dispersing and homogenizing tool 2. The pump 7, which is arranged at a distance in front of the orifice 6 and in front of the dispersing and homogenizing tool 2, has a pump pressure in the direction of flow which is lower than the suction pressure of the tool 2 in the region of this orifice 6. In this case, to influence this pressure in the supply line 4, a device for changing or reducing the cross section of this supply line 4, that is arranged a throttle, which is preferably designed as a shut-off device 8 in order to complete the supply line 4 completely.

Claims (14)

  1. Dispersing and/or homogenising apparatus (1) having a dispersing and/or homogenising tool (2) in which a pumpable substance or a pumpable mixture is mixed with at least one additive, wherein the pumpable substance or the like can be fed into the dispersing and/or homogenising tool (2) from a vessel, particularly a container (3) or a tube, and a feed line (5) is provided for the additive or additives, said feed line (5) opening into the inlet line (4) for the pumpable substance upstream of the tool (2), the feed line (5) and the inlet line (4) being arranged concentrically with respect to one another at least in the region of the mouth (6), characterised in that in the direction of feeding of the substance, at a spacing from the dispersing and/or homogenising tool (2) and in front of the mouth (6) of the feed line (5), there is provided at least one pump (7) the pump pressure of which in the direction of flow in the region of the mouth (6) of the feed line (5) is lower than the suction pressure of the dispersing and/or homogenising tool (2).
  2. Apparatus according to claim 1, characterised in that in the inlet line (4) for the pumpable substance from the pump (7) to the mouth (6) of the inlet line, there is a device for altering or reducing the cross-section of this inlet line.
  3. Apparatus according to claim 1 or 2, characterised in that the device for altering the cross-section of the inlet line is in the form of a shutoff device (8) and in that between the pump and the device for altering the cross-section of the inlet line a return line (9), in particular, branches off [into] the container (3).
  4. Apparatus according to one of claims 1 to 3, characterised in that the pump (7) or the pump impeller is mounted on the same shaft (10) as the dispersing and/or homogenising tool (2) and in that between the pump chamber on the compression side and the shaft and the feed line (5) for the additive which is, in particular, arranged concentrically inside the inlet line (4), there is provided a seal (14) acting on this shaft (10), which separates the compression side of the pump (7) from the intake area for the additive in the feed line (5).
  5. Apparatus according to one of claims 1 to 4, characterised in that the inlet line (4) and supply line (5) arranged concentrically with one another are also arranged concentrically with respect to the shaft (10), which passes through them in sealed manner and which is for the pump and the dispersing and/or homogenising tool (2).
  6. Apparatus according to one of claims 1 to 5, characterised in that behind the dispersing and/or homogenising tool in the direction of delivery, there is an outlet line (16) which leads back, in particular, into the container upstream of the pump (7).
  7. Apparatus according to one of claims 1 to 6, characterised in that in addition to or preferably on the outlet line (16) which leads back into the container there is a filling line (17) or filling fitting (18) which is connected to the outlet and return line via a fitting, for example a three-way cock.
  8. Apparatus according to one of claims 1 to 7, characterised in that the outlet line (16) opens into the recycling line (9) which branches off immediately behind the pump (7) and a shutoff fitting (19) is provided on the mouth, particularly in the form of a three-way cock.
  9. Apparatus according to one of claims 1 to 8, characterised in that the suction effect of the dispersing and/or homogenising tool (2) is intensified by at least one pump vane (20, 21) provided behind this tool (2) in the direction of delivery and/or at the entrance to this tool (2),
  10. Apparatus according to one of claims 1 to 9, characterised in that at least one stirring tool (22) is provided in the container (3), in front of the pump (7) in the direction of delivery.
  11. Apparatus according to one of claims 1 to 10, characterised in that the container (3) is arranged vertically above the pump (7) and the pump (7) is arranged vertically above the dispersing and/or homogenising tool (2) and in that the inlet line (4) and the feed line (5) are directed downwards in the region in front of the dispersing and/or homogenising tool (2).
  12. Apparatus according to one of claims 1 to 11, characterised in that the feed line (5) for the additive is constructed so that in front of its region (5a) disposed concentrically with respect to the inlet line (4) it leads sideways with respect to this region (5a).
  13. Apparatus according to one of claims 1 to 12, characterised in that the mouth (6) of the feed line (5, 5a) into the inlet line (4) is provided at the entrance to the dispersing and/or homogenising tool (2).
  14. Apparatus according to one of claims 1 to 13, characterised in that the dispersing and/or homogenising tool (2) is a rotor-stator apparatus having, in particular, a plurality of rotor ring gears and/or stator ring gears in a concentric arrangement.
EP04007370A 2003-05-09 2004-03-26 Apparatus for dispersing or homogenising Expired - Lifetime EP1475143B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04007370T PL1475143T3 (en) 2003-05-09 2004-03-26 Apparatus for dispersing or homogenising

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320739 2003-05-09
DE10320739A DE10320739B3 (en) 2003-05-09 2003-05-09 Device for dispersing and/or homogenizing pumpable material mixtures comprises a pump arranged in the feed direction of the material at a distance from a dispersing and/or homogenizing tool and in front of the opening of a feed line

Publications (4)

Publication Number Publication Date
EP1475143A2 EP1475143A2 (en) 2004-11-10
EP1475143A8 EP1475143A8 (en) 2005-01-19
EP1475143A3 EP1475143A3 (en) 2005-07-06
EP1475143B1 true EP1475143B1 (en) 2006-06-21

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US (1) US7325966B2 (en)
EP (1) EP1475143B1 (en)
AT (1) ATE330698T1 (en)
DE (2) DE10320739B3 (en)
DK (1) DK1475143T3 (en)
ES (1) ES2266943T3 (en)
PL (1) PL1475143T3 (en)

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Also Published As

Publication number Publication date
EP1475143A8 (en) 2005-01-19
DE10320739B3 (en) 2004-10-21
DE502004000796D1 (en) 2006-08-03
EP1475143A2 (en) 2004-11-10
PL1475143T3 (en) 2006-11-30
ES2266943T3 (en) 2007-03-01
ATE330698T1 (en) 2006-07-15
DK1475143T3 (en) 2006-10-23
US20040223407A1 (en) 2004-11-11
EP1475143A3 (en) 2005-07-06
US7325966B2 (en) 2008-02-05

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