EP1194221A1 - Method and device for producing pellets - Google Patents

Method and device for producing pellets

Info

Publication number
EP1194221A1
EP1194221A1 EP00938812A EP00938812A EP1194221A1 EP 1194221 A1 EP1194221 A1 EP 1194221A1 EP 00938812 A EP00938812 A EP 00938812A EP 00938812 A EP00938812 A EP 00938812A EP 1194221 A1 EP1194221 A1 EP 1194221A1
Authority
EP
European Patent Office
Prior art keywords
medium
valve
metering device
sections
ejected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00938812A
Other languages
German (de)
French (fr)
Inventor
Wolfgang JÖRG
Johann Schwartz
Andreas Ege
Robert Becker
Gerhard Steiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boehringer Ingelheim Pharma GmbH and Co KG
Original Assignee
Boehringer Ingelheim Pharma GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boehringer Ingelheim Pharma GmbH and Co KG filed Critical Boehringer Ingelheim Pharma GmbH and Co KG
Publication of EP1194221A1 publication Critical patent/EP1194221A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/18—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using a vibrating apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state

Definitions

  • the device for using this method is characterized by a cyclically controlled metering device, to which the medium to be processed can be fed continuously under pressure and by means of which the medium can be subdivided into individual sections which are preferably accelerated and can be ejected over a selectable distance.
  • the metering device can be designed as a magnetic, hydraulic, pneumatic, piezoelectronic or mechanical, clocked driven shut-off valve, the valve member of the shut-off valve being able to be inserted into the delivery line as a ball or cone interacting with a conical valve surface or as a triangularly shaped tip Slider can be designed.
  • the metering device can also be designed as a fluid valve designed in the form of a piece of hose connected to the delivery line, which is provided with a piezo-actuator drive element.
  • the metering device can also be formed as a valve tappet which can be driven by a magnetically, hydraulically, pneumatically, piezoelectronically or mechanically clocked and which has a conical or spherical tip and which cooperates with a collecting space, which the medium from a storage container preferably integrated into the housing can be fed.
  • the collecting space is to be formed by two or more supply channels which run radially to the chamber assigned to the valve tappet and are preferably incorporated in the cover and which are connected to the storage container directly via an annular space or via connecting channels.
  • the storage container and or the housing in the area of the collecting space should be equipped with heating cartridges and a piston should be provided for driving the valve tappet, which piston is arranged in a guide bushing which can be replaced in the housing.
  • a discharge device to the metering device, to which a carrier medium, for example compressed air, can be fed in order to accelerate the sections to be ejected.
  • a carrier medium for example compressed air
  • a vibration exciter can advantageously be included in the device.
  • This vibration exciter is connected directly to the discharge device and generates an oscillation of 20 Hz to 20 kHz, depending on the type of contamination that is transmitted to the discharge device.
  • This vibration is generated by a generator in the vibration exciter. Due to this vibration effect, no medium to be processed remains at the opening and there is a clean dripping.
  • the outlet opening of the metering device or the discharge device should be arranged at an angle ⁇ of 25 ° to 35 ° inclined upwards with respect to the horizontal.
  • the metering device or the discharge device is equipped with and / or with cooling elements
  • the size of the pellets produced can also be controlled with difficulty with the aid of the metering device during manufacture, since the timed opening and closing of the metering device is easy to accomplish, the production of individual pellet sizes being possible without problems by changing the opening and closing times.
  • the drawing shows two exemplary embodiments of a device for producing pellets from a viscous medium, which device is designed in accordance with the invention and are explained in detail below. Here shows, each in a schematic representation.
  • FIG. 1 shows a device provided with a metering device in the form of a block diagram
  • FIG. 2 shows the device according to FIG. 1 with a downstream discharge device
  • FIG. 3 shows the device according to FIG. 1 in a modified embodiment
  • FIG. 4 shows the metering device of the device according to FIG. 3 in an enlarged representation
  • FIG. 7 shows a tunnel that can be used in the device according to FIG. 1, G
  • the metering device 11 is designed as a fluid in the form of a piece of hose 19 connected to the conveying line 6, which is surrounded by a piezo-actuator drive element 20.
  • the medium 2 is also divided into sections 3 by the pressure which acts on the tube piece 19 from the outside.
  • the dosing device 11 is followed by a discharge device 21, which is connected to the dosing device 11 via an intermediate line 9. With the aid of the discharge device 11, the sections 3 are expelled in an accelerated manner.
  • the discharge device 21 is supplied with a carrier medium, for example compressed air, via a line 22, which acts on the sections 3 to be ejected.
  • the dosing device 11 is followed by a discharge device 21, which is connected to the dosing device 11 via an intermediate line 9.
  • the vibration exciter 40 is directly connected to the discharge device 21.
  • the vibration exciter 40 is set in vibration via the generator 41. This vibration system prevents the nozzle from clogging.
  • the discharge device 21 is followed by a tunnel 31, in which the ejected sections 3 can be cooled with the aid of a gas atmosphere 35.
  • the tunnel 31 can be equipped with spray nozzles 36, by means of which an active substance 37 can be sprayed, for example for coating the sections 3 and / or the pellets 4.
  • the storage container 5 can optionally be equipped with heating elements 32 in order to increase the viscosity of the stored medium 2.
  • the metering device 11 can be kept at a uniform operating temperature by means of heating elements 33. will hold.
  • cooling elements 34 are provided in order to cool the pellets 4.
  • the pellets 4 are produced by means of the device 1 in such a way that the medium 2, which is continuously supplied at constant pressure by means of the pump 7, is divided into individual sections 3 by the intermittently opening and closing shut-off valve 12; by changing the opening and closing times of the shut-off valve 12, the length of the sections 3 can be adjusted individually.
  • the sections 3 are additionally accelerated by its valve body and ejected at an increased speed directly or with the aid of the discharge device 21.
  • the individual sections 3 deform due to the surface tension, as shown in FIG. 7, to spherical pellets 4, which are almost exactly the same size and reproducible.
  • the metering device 61 is formed by a valve tappet 62 which is provided with a conically shaped tip 63 which interacts with an adapted chamber 57.
  • the valve tappet 62 is slidably inserted in a housing 52 which has a storage container 54 for " the medium to be processed as well as supply channels 55 and 55 ', via which the medium can be supplied via an annular space 66 to a collecting space 65 assigned to the valve tappet 62.
  • the collecting space 65 is formed by three radially directed channels 67, which are connected to the annular space 66 and open into the chamber 57, which is delimited by a counter surface 59 assigned to the valve tappet 62.
  • the channels 67 as well as the chamber 57 are incorporated in a cover 56 which is screwed onto the housing 52.
  • an outlet opening 58 is provided in the extension of the chamber 57 in the cover 56, through which the sections are ejected individually.
  • a piston 64 which can be driven in a clocked manner and which is displaceably arranged in a bushing 53 inserted into the housing 52, is used to drive the valve tappet 62.
  • a diaphragm 68 through which valve tappet 62 penetrates, seals its passage through housing 52. And in order to be able to process the medium at a selectable operating temperature, several heating cartridges 69 and 70 are inserted into the housing 52 in the area of the storage container 54 and the valve tappet 62.
  • Compressed gas is applied to the medium in the reservoir 54 via a connection 60, so that the medium is pressed into the chamber 57 via the channels 55, 55 ', the annular space 66 and the channels 67 forming the collecting space 65. If the valve tappet 62 is driven in a clocked manner by means of the piston 64, a section sized according to the capacity of the chamber 57 is ejected from the outlet opening 58 with each stroke movement, which section then automatically forms into a pellet.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Medicinal Preparation (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Glanulating (AREA)
  • Coating Apparatus (AREA)

Abstract

The invention relates to a device (1) for producing pellets (4) from a viscous medium (2). Said device is provided with a clock-actuated dosage device (11) that is continuously fed under pressure with the medium (2) to be processed. Said dosage device divides the medium (2) into individual sections (3) of adjustable length which are then issued by means of a path S. The invention provides a device (1) with which pellets (4) can be produced that are used as the substrates of pharmaceutical compositions and that have always almost the same size and are invariably reproducible.

Description

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Die Vorrichtung zur Anwendung dieses Verfahrens ist gekennzeichnet durch eine taktweise gesteuert antreibbare Dosiereinrichtung, der das zu verarbeitende Medium kontinuierlich unter Druck zuführbar und mittels der das Medium in einzelne Abschnitte einstellbarer Größe unterteilbar ist, die vorzugsweise beschleunigt und über eine wählbare Wegstrecke ausstoßbar sind.The device for using this method is characterized by a cyclically controlled metering device, to which the medium to be processed can be fed continuously under pressure and by means of which the medium can be subdivided into individual sections which are preferably accelerated and can be ejected over a selectable distance.
Die Dosiereinrichtung kann als magnetisch, hydraulisch, pneumatisch, piezoelektronisch oder mechanisch, getaktet antreibbares Absperrventil ausgebildet sein, wobei das Ventilglied des Absperrventils als mit einer kegelig ausgebildeten Ventilfläche zusammenwirkende Kugel oder Kegel oder als mit einer im Querschnitt dreieckig gestalteten Spitze versehener, in die Förderleitung einführbarer Schieber gestaltet sein kann.The metering device can be designed as a magnetic, hydraulic, pneumatic, piezoelectronic or mechanical, clocked driven shut-off valve, the valve member of the shut-off valve being able to be inserted into the delivery line as a ball or cone interacting with a conical valve surface or as a triangularly shaped tip Slider can be designed.
Die Dosiereinrichtung kann aber auch als fluidisches, in Form eines an die Förderleitung angeschlossenen Schlauchstückes gestaltetes Ventil ausgebildet sein, das mit einem piezoaktuato- rischen Antriebselement versehen ist.However, the metering device can also be designed as a fluid valve designed in the form of a piece of hose connected to the delivery line, which is provided with a piezo-actuator drive element.
Nach einer andersartigen Ausführungsform kann die Dosiereinrichtung auch als durch einen in einem Gehäuse verschiebbar eingesetzten magnetisch, hydraulisch, pneumatisch, piezoelektronisch oder mechanisch getaktet antreibbaren Ventilstößel gebildet sein, der eine kegelig oder kugelförmig gestaltete Spitze aufweist und mit einem Sammelraum zusammenwirkt, dem das Medium aus einem vorzugsweise in das Gehäuse integrierten Vorratsbehälter zuführbar -ist .According to another embodiment, the metering device can also be formed as a valve tappet which can be driven by a magnetically, hydraulically, pneumatically, piezoelectronically or mechanically clocked and which has a conical or spherical tip and which cooperates with a collecting space, which the medium from a storage container preferably integrated into the housing can be fed.
Hierbei ist es angebracht, dem Ventilstößel eine kegelig ausgebildete, dessen Spitze angepaßte Kammer zuzuordnen und die Kammer sowie eine sich an diese anschließende Austrittsöffnung in einem lösbar mit dem Gehäuse verbundenen Deckel einzuarbeiten. Der Sammelraum ist, um eine gleichmäßige Zuführung des zu verarbeitenden Mediums sicherzustellen, durch zwei oder mehrere radial zu der dem Ventilstößel zugeordneten Kammer verlaufende, vorzugsweise in den Deckel eingearbeitete Zuführungskanäle zu bilden, die über einen Ringraum unmittelbar oder über Verbindungskanäle an den Vorratsbehälter angeschlossen sind.It is appropriate here to assign a tapered chamber to the valve tappet, the tip of which is adapted, and to incorporate the chamber and an outlet opening adjoining it into a cover which is detachably connected to the housing. In order to ensure a uniform supply of the medium to be processed, the collecting space is to be formed by two or more supply channels which run radially to the chamber assigned to the valve tappet and are preferably incorporated in the cover and which are connected to the storage container directly via an annular space or via connecting channels.
Des weiteren sollte der Vorratsbehälter und oder das Gehäuse im Bereich des Sammelraumes mit Heizpatronen bestückt sein und zum Antrieb des Ventilstδßels sollte ein Kolben vorgesehen sein, der in einer auswechselbar in das Gehäuse eingesetzten Führungsbuchse angeordnet ist .Furthermore, the storage container and or the housing in the area of the collecting space should be equipped with heating cartridges and a piston should be provided for driving the valve tappet, which piston is arranged in a guide bushing which can be replaced in the housing.
Vorteilhaft ist es ferner, der Dosiereinrichtung eine Austrageinrichtung nachzuschalten, der zur Beschleunigung der auszustoßenden Abschnitte ein Trägermedium, beispielsweise Druckluft, zugeführt werden kann.It is also advantageous to connect a discharge device to the metering device, to which a carrier medium, for example compressed air, can be fed in order to accelerate the sections to be ejected.
An der Austrageinrichtung besteht erfahrungsgemäß die Möglichkeit des Verstopfens . Um der Verstopfungsgefahr entgegen zu wirken, kann vorteilhafterweise ein Schwingungserreger in die Vorrichtung einbezogen werden. Dieser Schwingungserreger wird direkt an die Austrageinrichtung angeschlossen und erzeugt eine Schwingung von 20 Hz bis 20 kHz, je nach Art der Verschmutzung, die auf die Austrageinrichtung übertragen wird. Diese Schwingung wird über einen Generator im Schwingungserreger erzeugt. Durch diesen Schwingungseffekt verbleibt kein zu verarbeitendes Medium an der Öffnung und es erfolgt ein sauberes Abtropfen.Experience has shown that there is a possibility of clogging at the discharge device. In order to counteract the risk of constipation, a vibration exciter can advantageously be included in the device. This vibration exciter is connected directly to the discharge device and generates an oscillation of 20 Hz to 20 kHz, depending on the type of contamination that is transmitted to the discharge device. This vibration is generated by a generator in the vibration exciter. Due to this vibration effect, no medium to be processed remains at the opening and there is a clean dripping.
Die Austrittsöffnung der Dosiereinrichtung oder der Austrageinrichtung sollte, um eine ballistische Flugbahn zu erhalten, unter einem Winkel α von 25° bis 35° gegenüber der Horizontalen nach oben geneigt angeordnet sein.In order to obtain a ballistic trajectory, the outlet opening of the metering device or the discharge device should be arranged at an angle α of 25 ° to 35 ° inclined upwards with respect to the horizontal.
Ferner ist es angezeigt, der Dosiereinrichtung oder der Austrageinrichtung einen mit Kühlelementen bestückten und/oder Furthermore, it is indicated that the metering device or the discharge device is equipped with and / or with cooling elements
geben. Auch kann während der Herstellung die Größe der erzeugten Pellets mit Hilfe der Dosiereinrichtung ohne Schwierigkeiten gesteuert werden, da das getaktete Öffnen und Schließen der Dosiereinrichtung leicht zu bewerkstelligen ist, wobei durch Verändern der Öffnungs- und Schließzeiten die Herstellung individueller Pelletsgrößen problemlos möglich ist. Durch eine Parallelschaltung mehrerer Steuermechanismen mit entsprechend hoher Taktfrequenz ist somit eine äußerst wirtschaftliche Herstellung von pharmazeutischen Rezepturen durch die Herstellung von Pellets mit einem homogenen Teilchenprofil zu bewerkstelligen .give. The size of the pellets produced can also be controlled with difficulty with the aid of the metering device during manufacture, since the timed opening and closing of the metering device is easy to accomplish, the production of individual pellet sizes being possible without problems by changing the opening and closing times. By connecting several control mechanisms in parallel with a correspondingly high clock frequency, it is thus possible to produce pharmaceutical formulations extremely economically by producing pellets with a homogeneous particle profile.
In der Zeichnung sind zwei Ausführungsbeispiele einer gemäß der Erfindung ausgebildeten Vorrichtung zur Herstellung von Pellets aus einem viskosen Medium dargestellt, die nachfolgend im einzelnen erläutert sind. Hierbei zeigt, jeweils in schema- tischer Darstellung.The drawing shows two exemplary embodiments of a device for producing pellets from a viscous medium, which device is designed in accordance with the invention and are explained in detail below. Here shows, each in a schematic representation.
Figur 1 eine mit einer Dosiereinrichtung versehene Vorrichtung in Form eines Blockschaltbildes,FIG. 1 shows a device provided with a metering device in the form of a block diagram,
Figur 2 die Vorrichtung nach Figur 1 mit einer nachgeschalteten Austrageinrichtung,FIG. 2 shows the device according to FIG. 1 with a downstream discharge device,
Figur 3 die Vorrichtung nach Figur 1 in einer abgewandelten Ausgestaltung,FIG. 3 shows the device according to FIG. 1 in a modified embodiment,
Figur 4 die Dosiereinrichtung der Vorrichtung nach Figur 3 in einer vergrößerten Wiedergabe,FIG. 4 shows the metering device of the device according to FIG. 3 in an enlarged representation,
Figuren 5 und 6 andersartige Ausgestaltungen der bei derFigures 5 and 6 different types of configurations in the
Vorrichtung nach Figur 1 verwendbaren Dosiereinrichtung,Device according to Figure 1 usable dosing device,
Figur 7 einen bei der Vorrichtung nach Figur 1 verwendbaren Tunnel, GFIG. 7 shows a tunnel that can be used in the device according to FIG. 1, G
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Gemäß Figur 6 ist die Dosiereinrichtung 11 als fluidisches in Form eines an die Fδrderleitung 6 angeschlossenen Schlauchstückes 19 gestaltet, das von einem piezoaktuatorischen Antriebselement 20 umgeben ist. Das Medium 2 wird durch den Druck, der von außen auf das Schlauchstück 19 einwirkt, ebenfalls in Abschnitte 3 unterteilt.According to FIG. 6, the metering device 11 is designed as a fluid in the form of a piece of hose 19 connected to the conveying line 6, which is surrounded by a piezo-actuator drive element 20. The medium 2 is also divided into sections 3 by the pressure which acts on the tube piece 19 from the outside.
Gemäß Figur 2 ist der Dosiereinrichtung 11 eine Austrageinrichtung 21 nachgeschaltet, die über eine Zwischenleitung 9 an die Dosiereinrichtung 11 angeschlossen ist. Mit Hilfe der Austrageinrichtung 11 werden die Abschnitte 3 beschleunigt ausgestoßen. Um dies zu bewerkstelligen, wird der Austrageinrichtung 21 über eine Leitung 22 ein Trägermedium, zum Beispiel Druckluft, zugeführt, das auf die auszustoßenden Abschnitte 3 einwirkt .According to FIG. 2, the dosing device 11 is followed by a discharge device 21, which is connected to the dosing device 11 via an intermediate line 9. With the aid of the discharge device 11, the sections 3 are expelled in an accelerated manner. To accomplish this, the discharge device 21 is supplied with a carrier medium, for example compressed air, via a line 22, which acts on the sections 3 to be ejected.
Gemäß Figur 11 ist der Dosiereinrichtung 11 eine Austrageinrichtung 21 nachgeschaltet, die über eine Zwischenleitung 9 an die Dosiereinrichtung 11 angeschlossen ist. Der Schwingungserreger 40 ist dabei direkt an die Austrageinrichtung 21 angeschaltet. Über den Generator 41 wird der Schwingungserreger 40 in Schwingung versetzt. Mit Hilfe dieses SchwingungsSystems wird ein Verstopfen der Düse verhindert.According to FIG. 11, the dosing device 11 is followed by a discharge device 21, which is connected to the dosing device 11 via an intermediate line 9. The vibration exciter 40 is directly connected to the discharge device 21. The vibration exciter 40 is set in vibration via the generator 41. This vibration system prevents the nozzle from clogging.
Der Austrageinrichtung 21 ist gemäß Figur 7 ein Tunnel 31 nachgeschaltet, in dem die ausgestoßenen Abschnitte 3 mit Hilfe einer Gasatmosphäre 35 gekühlt werden können. Außerdem kann der Tunnel 31 mit Spritzdüsen 36 bestückt werden, mittels denen zum Beispiel zur Beschichtung der Abschnitte 3 und/oder der Pellets 4 ein Wirkstoff 37 versprüht werden kann.According to FIG. 7, the discharge device 21 is followed by a tunnel 31, in which the ejected sections 3 can be cooled with the aid of a gas atmosphere 35. In addition, the tunnel 31 can be equipped with spray nozzles 36, by means of which an active substance 37 can be sprayed, for example for coating the sections 3 and / or the pellets 4.
Der Vorratsbehälter 5 kann, wie dies in Figur 3 eingezeichnet ist, gegebenenfalls mit Heizelementen 32 bestückt sein, um die Viskosität des eingelagerten Mediums 2 zu erhöhen. Zu dem gleichen Zweck kann die Dosiereinrichtung 11 mittels Heizelementen 33 auf einer gleichmäßigen Betriebstemperatur ge- halten werden. Und in dem Tunnel 31 nach Figur 3 sind Kühlelemente 34 vorgesehen, um die Pellets 4 abzukühlen.As shown in FIG. 3, the storage container 5 can optionally be equipped with heating elements 32 in order to increase the viscosity of the stored medium 2. For the same purpose, the metering device 11 can be kept at a uniform operating temperature by means of heating elements 33. will hold. And in the tunnel 31 according to FIG. 3, cooling elements 34 are provided in order to cool the pellets 4.
Die Herstellung der Pellets 4 erfolgt mittels der Vorrichtung 1 in der Weise, daß das mit Hilfe der Pumpe 7 der Dosiereinrichtung 11 kontinuierlich mit konstantem Druck zugeführte Medium 2 durch das sich taktweise öffnende und schließende Absperrventil 12 in einzelne Abschnitte 3 unterteilt wird; durch Verändern der Öffnungs- und Schließzeiten des Absperrventils 12 kann die Länge der Abschnitte 3 individuell eingestellt werden.The pellets 4 are produced by means of the device 1 in such a way that the medium 2, which is continuously supplied at constant pressure by means of the pump 7, is divided into individual sections 3 by the intermittently opening and closing shut-off valve 12; by changing the opening and closing times of the shut-off valve 12, the length of the sections 3 can be adjusted individually.
Durch das Schließen des Absperrventils 12 werden die Abschnitte 3 durch dessen Ventilkörper zusätzlich beschleunigt und mit erhöhter Geschwindigkeit unmittelbar oder mit Hilfe der Austrageinrichtung 21 ausgestoßen. In der sich an diese anschließende Flugbahn über die Wegstrecke S verformen sich die einzelnen Abschnitte 3 aufgrund der Oberflächenspannung, wie dies in Figur 7 dargestellt ist, zu kugelförmigen Pellets 4, die eine nahezu exakt gleiche Größe und Reproduzierbarkeit aufweisen.By closing the shut-off valve 12, the sections 3 are additionally accelerated by its valve body and ejected at an increased speed directly or with the aid of the discharge device 21. In the subsequent trajectory over the distance S, the individual sections 3 deform due to the surface tension, as shown in FIG. 7, to spherical pellets 4, which are almost exactly the same size and reproducible.
Bei der in den Figuren 8 bis 10 gezeigten Vorrichtung 51 zur Herstellung von Pellets ist die Dosiereinrichtung 61 durch einen Ventilstößel 62 gebildet, der mit einer kegelig gestalteten Spitze 63 versehen ist, die mit einer angepaßten Kammer 57 zusammenwirkt. Der Ventilstößel 62 ist verschiebbar in einem Gehäuse 52 eingesetzt, das einen Vorratsbehälter 54 für "das zu verarbeitende Medium sowie Zuführungskanäle 55 und 55' aufweist, über die das Medium über einen Ringraum 66 einem dem Ventilstößel 62 zugeordneten Sammelraum 65 zuführbar ist.In the device 51 for producing pellets shown in FIGS. 8 to 10, the metering device 61 is formed by a valve tappet 62 which is provided with a conically shaped tip 63 which interacts with an adapted chamber 57. The valve tappet 62 is slidably inserted in a housing 52 which has a storage container 54 for " the medium to be processed as well as supply channels 55 and 55 ', via which the medium can be supplied via an annular space 66 to a collecting space 65 assigned to the valve tappet 62.
Bei dem gezeigten Ausführungsbeispiel ist der Sammelraum 65 durch drei radial gerichtete Kanäle 67 gebildet, die an den Ringraum 66 angeschlossen sind und in die Kammer 57 münden, die durch eine mit dem Ventilstößel 62 zugeordnete Gegenfläche 59 begrenzt ist. Die Kanäle 67 wie auch die Kammer 57 sind in einem Deckel 56 eingearbeitet, der auf das Gehäuse 52 aufgeschraubt ist. Außerdem ist in Verlängerung der Kammer 57 in dem Deckel 56 eine Austrittsöffnung 58 vorgesehen, durch die die Abschnitte einzeln ausgestoßen werden.In the embodiment shown, the collecting space 65 is formed by three radially directed channels 67, which are connected to the annular space 66 and open into the chamber 57, which is delimited by a counter surface 59 assigned to the valve tappet 62. The channels 67 as well as the chamber 57 are incorporated in a cover 56 which is screwed onto the housing 52. In addition, an outlet opening 58 is provided in the extension of the chamber 57 in the cover 56, through which the sections are ejected individually.
Zum Antrieb des Ventilstößels 62 dient ein getaktet antreibbarer Kolben 64, der verschiebbar in einer in das Gehäuse 52 eingesetzten Buchse 53 angeordnet ist. Mittels einer Membran 68, die von dem Ventilstößel 62 durchgriffen wird, ist dessen Durchführung durch das Gehäuse 52 abgedichtet. Und um das Medium bei einer wählbaren Betriebstemperatur verarbeiten zu können, sind im Bereich des Vorratsbehälters 54 sowie des Ventilstößels 62 jeweils mehrere Heizpatronen 69 bzw. 70 in das Gehäuse 52 eingesetzt.A piston 64, which can be driven in a clocked manner and which is displaceably arranged in a bushing 53 inserted into the housing 52, is used to drive the valve tappet 62. A diaphragm 68, through which valve tappet 62 penetrates, seals its passage through housing 52. And in order to be able to process the medium at a selectable operating temperature, several heating cartridges 69 and 70 are inserted into the housing 52 in the area of the storage container 54 and the valve tappet 62.
Über einen Anschluß 60 wird das in dem Vorratsbehälter 54 befindliche Medium mit Druckgas beaufschlagt, so daß das Medium über die Kanäle 55, 55', den Ringraum 66 und die den Sammelraum 65 bildenden Kanäle 67 in die Kammer 57 gedrückt wird. Wird mittels des Kolbens 64 der Ventilstößel 62 getaktet angetrieben, so wird bei jeder Hubbewegung jeweils ein, entsprechend dem Fassungsvermögen der Kammer 57 bemessener Abschnitt aus der Austrittsöffnung 58 ausgestoßen, der sich anschließend selbsttätig zu einem Pellet formt. Compressed gas is applied to the medium in the reservoir 54 via a connection 60, so that the medium is pressed into the chamber 57 via the channels 55, 55 ', the annular space 66 and the channels 67 forming the collecting space 65. If the valve tappet 62 is driven in a clocked manner by means of the piston 64, a section sized according to the capacity of the chamber 57 is ejected from the outlet opening 58 with each stroke movement, which section then automatically forms into a pellet.

Claims

Patentansprüche claims
1.) Verfahren zur Herstellung von Pellets (4) aus einem viskosen Medium (2) , dadurch gekennzeichnet, daß das zu verarbeitende Medium (2) unter vorzugsweise konstantem Druck kontinuierlich einer taktweise gesteuert antreibbaren Dosiereinrichtung (11, 61) zugeführt wird, mittels der das Medium (2) in einzelne Abschnitte (3) einstellbarer Länge unterteilt wird und diese über eine, wählbare Wegstrecke (S) ausgestoßen werden.1.) Process for producing pellets (4) from a viscous medium (2), characterized in that the medium (2) to be processed is fed continuously, preferably under constant pressure, to a metering device (11, 61) which can be driven in a controlled manner by means of the medium (2) is divided into individual sections (3) of adjustable length and these are ejected over a selectable distance (S).
2.) Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Temperatur des zu verarbeitenden Mediums (2) vor der Zuführung zu der Dosiereinrichtung (11, 61) durch Erwärmen oder Kühlen eines Vorratsbehälters (5, 54) und/oder einer Förderleitung (6) und/oder der Dosiereinrichtung (11, 61) eingestellt wird.2.) Method according to claim 1, characterized in that the temperature of the medium to be processed (2) before being fed to the metering device (11, 61) by heating or cooling a storage container (5, 54) and / or a delivery line (6 ) and / or the metering device (11, 61) is set.
3.) Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Temperatur der ausgestoßenen Abschnitte (3) während der Ausbringung im gesamten Bereich oder in einem oder mehreren Teilbereichen der Wegstrecke (S) vorzugsweise über die Umgebungstemperatur beeinflußt wird.3.) Method according to claim 1 or 2, characterized in that the temperature of the ejected sections (3) during the application in the entire area or in one or more partial areas of the path (S) is preferably influenced by the ambient temperature.
4. ) Verfahren nach einem oder mehreren der Ansprüche 1 bis 3 , dadurch gekennzeichnet, daß die einzelnen Abschnitte (3), zum Beispiel mit Hilfe einer Austrageinrichtung (21) , beschleunigt ausgestoßen werden.4.) Method according to one or more of claims 1 to 3, characterized in that the individual sections (3), for example with the aid of a discharge device (21), are expelled accelerated.
5.) Verfahren nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Abschnitte (3) während der Ausbringung mit einem Überzug versehen werden.5.) Method according to one or more of claims 1 to 4, characterized in that the sections (3) are provided with a coating during the application.
6.) Verfahren nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Abschnitte (3) in einer ballistischen Flugbahn ausgestoßen werden. 6.) Method according to one or more of claims 1 to 5, characterized in that the sections (3) are ejected in a ballistic trajectory.
7.) Vorrichtung (1, 61) zur Herstellung von Pellets (4) aus einem viskosen Medium (2) , gekennzeichet durch eine taktweise gesteuert antreibbare Dosiereinrichtung (11, 61) , der das zu verarbeitende Medium (2) kontinuierlich unter Druck zuführbar und mittels der das Medium (2) in einzelne Abschnitte (3) einstellbarer Länge unterteilbar ist, die vorzugsweise beschleunigt über eine wählbare Wegstrecke (S) ausstoßbar sind.7.) Device (1, 61) for the production of pellets (4) from a viscous medium (2), characterized by a cyclically controlled metering device (11, 61), which can be supplied with the medium (2) to be processed continuously under pressure and by means of which the medium (2) can be subdivided into individual sections (3) of adjustable length, which can preferably be expelled over a selectable distance (S).
8.) Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Dosiereinrichtung (11) als magnetisch, hydraulisch, pneumatisch, piezoelektrisch oder mechanisch getaktet antreibbares Absperrventil (12) ausgebildet ist.8.) Device according to claim 7, characterized in that the metering device (11) is designed as a magnetically, hydraulically, pneumatically, piezoelectrically or mechanically clocked driven shut-off valve (12).
9.) Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß das Ventilglied des Absperrventils (12) als mit einer kegelig ausgebildeten Ventilfläche (16) zusammenwirkende Kugel (14), als Kegel (15) oder als mit einer im Querschnitt dreieckig gestalteten Spitze (18) versehener in die Förderleitung (6) einführbarer Schieber (17) ausgebildet ist.9.) Device according to claim 8, characterized in that the valve member of the shut-off valve (12) as a conical valve surface (16) interacting ball (14), as a cone (15) or as a triangular cross-sectionally shaped tip (18 ) provided in the delivery line (6) insertable slide (17) is formed.
10.) Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Dosiereinrichtung (11) als fluidisches, in Form eines an die Förderleitung (6) angeschlossenen Schlauchstückes (19) gestaltetes Ventil ausgebildet ist, das mit einem piezoaktuato- rischen Antriebselement (20) versehen ist.10.) Device according to claim 7, characterized in that the metering device (11) is designed as a fluidic, in the form of a hose section (19) connected to the delivery line (6) designed valve, which is provided with a piezo-actuator drive element (20) is.
11.) Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Dosiereinrichtung (61) als durch einen in einem Gehäuse (52) verschiebbar eingesetzten magnetisch, hydraulisch, pneumatisch, piezoelektrisch oder mechanisch getaktet antreibbaren Ventilstößel (62) gebildet ist, der eine kegelig oder kugelförmig gestaltete Spitze (63) aufweist und mit einem Sammelraum (65) zusammenwirkt, dem das Medium (2) aus einem vorzugsweise in das Gehäuse (52) - integrierten Vorratsbehälter (54) zuführbar ist . 11.) Device according to claim 7, characterized in that the metering device (61) as a by a in a housing (52) slidably used magnetically, hydraulically, pneumatically, piezoelectrically or mechanically cycled valve tappet (62) is formed, which is a conical or has a spherically shaped tip (63) and interacts with a collecting space (65) to which the medium (2) can be fed from a storage container (54) which is preferably integrated into the housing (52).
12.) Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß dem Ventilstößel (62) eine kegelig ausgebildete, dessen Spitze (63) angepaßte Kammer (57) mit einer sich an diese anschließenden Austrittsöffnung (58) zugeordnet ist.12.) Device according to claim 11, characterized in that the valve tappet (62) is associated with a tapered, the tip (63) adapted chamber (57) with an adjoining this outlet opening (58).
13. ) Vorrichtung nach einem oder mehreren der Ansprüche 7 bis 12, dadurch gekennzeichnet, daß der Dosiereinrichtung (11) eine Austrageinrichtung (21) nachgeschaltet ist.13.) Device according to one or more of claims 7 to 12, characterized in that the metering device (11) is followed by a discharge device (21).
14.) Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß an die Austrageinrichtung 21 ein Schwingungserreger 40 angeschaltet ist, in dem über einen Generator 41 eine Schwingung von 20 Hz bis 20 kHz erzeugt wird. 14.) Device according to claim 13, characterized in that a vibration exciter 40 is connected to the discharge device 21, in which a vibration of 20 Hz to 20 kHz is generated via a generator 41.
EP00938812A 1999-06-28 2000-06-23 Method and device for producing pellets Withdrawn EP1194221A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19929526 1999-06-28
DE19929526A DE19929526A1 (en) 1999-06-28 1999-06-28 Method and device for producing pellets
PCT/EP2000/005801 WO2001000311A1 (en) 1999-06-28 2000-06-23 Method and device for producing pellets

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EP1194221A1 true EP1194221A1 (en) 2002-04-10

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EP (1) EP1194221A1 (en)
JP (1) JP2003503174A (en)
CN (1) CN1358111A (en)
AR (1) AR025848A1 (en)
AU (1) AU5406500A (en)
BR (1) BR0011993A (en)
CA (1) CA2370595A1 (en)
CO (1) CO5271725A1 (en)
DE (1) DE19929526A1 (en)
EA (1) EA200200044A1 (en)
EE (1) EE200100710A (en)
HK (1) HK1045275A1 (en)
MX (1) MXPA01012775A (en)
PE (1) PE20010282A1 (en)
UY (1) UY26223A1 (en)
WO (1) WO2001000311A1 (en)
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DE10105156A1 (en) * 2001-02-06 2002-08-22 Bruske Frank Method and device for producing particles from liquid starting media
GB0208840D0 (en) * 2002-04-18 2002-05-29 Novamedix Distrib Ltd Fluid control valve
KR101183540B1 (en) 2012-04-17 2012-09-20 실버모터스주식회사 Pellet manufacturing system
DE102013107604A1 (en) 2012-07-19 2014-01-23 Inducap GmbH - Verfahrenstechnik Device for producing particles by dripping liquid starting medium, comprises an housing having an upper side and side walls, which enclose a chamber having aperture at the bottom and movable element respectively provided with through hole
CN105457557B (en) * 2014-09-09 2018-09-18 昂大奇丰科技（天津）有限公司 Vibration crushing type granulating equipment
CN106962965B (en) * 2016-01-14 2020-07-24 内蒙古伊利实业集团股份有限公司 Production equipment and method of interesting bead product

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US4793783A (en) * 1987-01-20 1988-12-27 The Dow Chemical Company Apparatus for producing prills
DE4022648C2 (en) * 1990-07-17 1994-01-27 Nukem Gmbh Method and device for producing spherical particles from a liquid phase
DE4405202A1 (en) * 1993-03-05 1994-09-08 Solvay Deutschland Process for producing spherical particles

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DE19929526A1 (en) 2001-05-31
HK1045275A1 (en) 2002-11-22
BR0011993A (en) 2002-10-08
MXPA01012775A (en) 2002-09-02
UY26223A1 (en) 2001-01-31
EA200200044A1 (en) 2002-08-29
AR025848A1 (en) 2002-12-18
AU5406500A (en) 2001-01-31
EE200100710A (en) 2003-02-17
WO2001000311A1 (en) 2001-01-04
JP2003503174A (en) 2003-01-28
CO5271725A1 (en) 2003-04-30
PE20010282A1 (en) 2001-03-30
CA2370595A1 (en) 2001-01-04
CN1358111A (en) 2002-07-10
ZA200110459B (en) 2002-10-22

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