EP0668478A1 - Receptacle with stirring device - Google Patents

Receptacle with stirring device Download PDF

Info

Publication number
EP0668478A1
EP0668478A1 EP94117059A EP94117059A EP0668478A1 EP 0668478 A1 EP0668478 A1 EP 0668478A1 EP 94117059 A EP94117059 A EP 94117059A EP 94117059 A EP94117059 A EP 94117059A EP 0668478 A1 EP0668478 A1 EP 0668478A1
Authority
EP
European Patent Office
Prior art keywords
gas
container
gas guide
pipe socket
guide cartridge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94117059A
Other languages
German (de)
French (fr)
Other versions
EP0668478B1 (en
Inventor
Lorenz Bernhard Bohle
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.)
L B Bohle Pharmatechnik GmbH
Original Assignee
L B Bohle Pharmatechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by L B Bohle Pharmatechnik GmbH filed Critical L B Bohle Pharmatechnik GmbH
Publication of EP0668478A1 publication Critical patent/EP0668478A1/en
Application granted granted Critical
Publication of EP0668478B1 publication Critical patent/EP0668478B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/40—Mixers using gas or liquid agitation, e.g. with air supply tubes
    • B01F33/409—Parts, e.g. diffusion elements; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/003—Supply-air or gas filters

Definitions

  • the invention relates to an agitator container for drying and possibly granulating pourable products according to the preamble of the main claim.
  • the invention has for its object to achieve a uniform flow through the product to be treated in a stirrer tank with trailing gas, but the gas inlet openings can be inspected at any time and thus qualifiable and validatable machines can be offered to the pharmaceutical industry.
  • the gas is supplied through the insulating jacket, the gas being conducted into a cylindrical cartridge unit.
  • This unit has a cylindrical element with a conical taper, which is equipped with a sieve fabric of 10 ⁇ m or smaller and which enables the gas to enter the product of the agitator tank through this stainless steel sieve fabric.
  • the gas supply through the insulating jacket construction of the actual agitator tank is designed so that no dead zones are created in this area in the event of cleaning, but instead the gas is discharged at the deepest point and any cleaning and disinfection liquid can also be supplied.
  • the removable cartridges can be closed vacuum-tight with the inside of the container using a quick-release fastener in the form of a clamping ring. This ensures that the towing gas cannot escape to the outside.
  • Air with sufficient filtering according to pharmaceutical quality with a normal room temperature can be used as the trailing gas, but also an inert gas.
  • the new device it is possible to remove a water-bound granulating aid from the product within a third of the normal vacuum drying time.
  • a section of a container bottom wall 1 is shown, which has a gas inlet opening 2.
  • the container bottom wall is traversed by a pipe socket 6, which is welded firmly to the metallic wall parts of the bottom wall 1, with part of the insulating jacket 14 and part of the water jacket 15 being still visible in the illustrated embodiment.
  • the pipe socket 6 connects to the opening of the container bottom wall in such a way that an annular step is created, on which a gas guide cartridge 3 which can be inserted into the pipe socket 6 is supported.
  • the support takes place with the interposition of an annular seal 9.
  • the actual gas inlet opening 2 of the container bottom 1 or the gas guide cartridge 3 is closed by a sieve fabric 4 which is very close-meshed, for example has a mesh size of 10 ⁇ m.
  • the gas guide cartridge 3 has on its outside an annular collar 8 with which it is supported on the outer part of the pipe socket 6, again again with the interposition of an annular seal 10.
  • the gas guide cartridge 3 is fixed on the pipe socket 6 via a clamping ring 11, so that a vacuum-tight connection between the gas guide cartridge 3 and the pipe socket 6 and the In nenraum of the actual agitator tank is created.
  • gas guide cartridges 3 and pipe sockets 6 can be provided in an agitator tank which is designed in accordance with the innovation, and the emptying flap arranged in the center of the agitator tank bottom can additionally be provided with a gas guide cartridge 3 and a pipe connector 6.
  • the new device enables the supply of entraining gas to a large extent in an agitator container, so that the drying time of the container contents can thereby be considerably reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Solid Materials (AREA)
  • Catching Or Destruction (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)

Abstract

Rotary container for drying, or possibly granulating, free-flowing materials, partic. those used in pharmaceutical products. includes gas distributors (3) below the container floor (1) to release gas through it via a mesh (4). A housing (6) protrudes through the wall of the container. Gas distributor (3) is held in this housing and gas is supplied through the housing by pipe (7), passing into the gap between housing and distributor and entering the distributor through-holes (12). A stainless steel mesh (4) with openings of about 10 mu m, forms the top end of distributor (3). A flange (8) seals the bottom end of the distributor (3). Distributor and housing are assembled gastight through O-rings (9, 10) and connected to each other by a quick-release clip (11).

Description

Die Erfindung bezieht sich auf einen Rührwerksbehälter zum Trocknen und ggf. Granulieren von schüttfähigen Produkten gemäß dem Oberbegriff des Hauptanspruches.The invention relates to an agitator container for drying and possibly granulating pourable products according to the preamble of the main claim.

In bekannten Vorrichtungen zum Trocknen und ggf. Granulieren von pulverisiertem Materal für pharmazeutische Produkte, z. B. gemäß der EP-385 965 B1, erfolgt das Zuführen des sogenannten "Schleppgases" zum Abführen der Feuchte aus dem Trocknungsprozeß durch einen dreiarmigen Rührflügel hindurch in das Produkt. Dieses hat den Nachteil, daß es nur drei Einlaßstellen in einem Rührwerksbehälter gibt, da der dreiarmige Rührflügel eben nur an drei Stellen das Gas in das Produkt ablassen kann. Hierbei bilden sich im Stillstand des Rührflügels schnell Zonen, durch die das Gas in Kanälen entweicht, und das übrige Produkt kommt nicht mit dem Trocknungsgas in Berührung. Nur wenn der Rührflügel in Bewegung ist, ist eine einigermaßen gleichmäßige Durchflutung des zu bearbeitenden Produktes mit Gas sicherzustellen. Da aber bei einer Granulation mit anschließender oder gleichzeitiger Trocknung das Wesentliche darin besteht, daß das Produkt nicht zu stark durch einen Rührer mechanisch beansprucht wird, ist es vorteilhaft, wenn man den Rührer nicht sehr oft in Bewegung setzen muß, sondern die Schleppgasverteilung auf den Umfang des Produktes durch andere Maßnahmen sicherstellen könnte.In known devices for drying and possibly granulating pulverized material for pharmaceutical products, e.g. B. according to EP-385 965 B1, the supply of the so-called "entraining gas" for removing the moisture from the drying process takes place through a three-armed impeller into the product. This has the disadvantage that there are only three inlet points in an agitator tank, since the three-armed impeller can only release the gas into the product at three points. When the agitator blade is at a standstill, zones quickly form through which the gas escapes in channels, and the rest of the product does not come into contact with the drying gas. Only when the impeller is in motion can a reasonably uniform flow of gas through the product to be processed be ensured. However, since in a granulation with subsequent or simultaneous drying the essential thing is that the product is not mechanically stressed too much by a stirrer, it is advantageous if one does not have to set the stirrer very often, but rather the trailing gas distribution over the circumference of the product by other measures.

Bei den bekannten Anordnungen entsteht auch ein hygienisches Problem. Die Aussparungen in den Rührwerksflügeln werden über Sintermetalle oder ähnliche poröse Werkstoffe erreicht, die sich aber schlecht oder gar nicht reinigen lassen, so daß derartige Einrichtungen für pharmazeutische Produkte nicht einsetzbar sind.In the known arrangements, there is also a hygienic problem. The recesses in the agitator blades are achieved via sintered metals or similar porous materials, which are difficult or impossible to clean, so that such devices cannot be used for pharmaceutical products.

Der Erfindung liegt die Aufgabe zugrunde, eine gleichmäßige Durchströmung des zu behandelnden Produktes in einem Rührwerksbehälter mit Schleppgas zu erreichen, wobei aber die Gaseintrittsöffnungen jederzeit inspizierbar sind und somit qualifizierbare und validierbare Maschinen der pharmazeutischen Industrie angeboten werden können.The invention has for its object to achieve a uniform flow through the product to be treated in a stirrer tank with trailing gas, but the gas inlet openings can be inspected at any time and thus qualifiable and validatable machines can be offered to the pharmaceutical industry.

Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst.This object on which the invention is based is achieved by the teaching of the main claim.

Vorteilhafte Ausgestaltungen sind in den Unteransprüchen erläutert.Advantageous configurations are explained in the subclaims.

Mit anderen Worten ausgedrückt erfolgt bei der neuen Einrichtung die Gaszufuhr durch den Isoliermantel, wobei das Gas in eine zylindrische Cartridge-Einheit geleitet wird. Diese Einheit weist ein zylindrisches Element mit konischer Verjüngung auf, das mit einem Siebgewebe von 10 um oder kleiner ausgestattet ist und dem Gas die Möglichkeit gibt, durch dieses Edelstahlsiebgewebe in das Produkt des Rührwerksbehälters einzutreten. Die Gaszufuhr durch die Isoliermantelkonstruktion des eigentlichen Rührwerksbehälters ist so ausgebildet, daß im Reinigungsfall keine Totzonen in diesem Bereich geschaffen werden, sondern an der tiefsten Stelle jeweils der Austritt des Gases erfolgt und somit auch eine eventuelle Reinigungs- und Desinfektionsflüssigkeit zugeführt werden kann. Über einen Schnellverschluß in Form eines Spannringes lassen sich die demontierbaren Patronen vakuumdicht mit dem Behälterinneren verschließen. So ist sichergestellt, daß das Schleppgas nicht nach außen dringen kann.In other words, in the new device, the gas is supplied through the insulating jacket, the gas being conducted into a cylindrical cartridge unit. This unit has a cylindrical element with a conical taper, which is equipped with a sieve fabric of 10 µm or smaller and which enables the gas to enter the product of the agitator tank through this stainless steel sieve fabric. The gas supply through the insulating jacket construction of the actual agitator tank is designed so that no dead zones are created in this area in the event of cleaning, but instead the gas is discharged at the deepest point and any cleaning and disinfection liquid can also be supplied. The removable cartridges can be closed vacuum-tight with the inside of the container using a quick-release fastener in the form of a clamping ring. This ensures that the towing gas cannot escape to the outside.

Als Schleppgas kann sowohl Luft mit einer ausreichenden Filtrierung nach Pharma-Qualität mit einer ganz normalen Raumtemperatur eingesetzt werden, aber auch ein Inertgas. Mit der neuerungsgemäßen Einrichtung ist es möglich, ein wassergebundenes Granulierhilfsmittel innerhalb eines Drittels der normalen Vakuumtrocknungszeit aus dem Produkt zu entfernen.Air with sufficient filtering according to pharmaceutical quality with a normal room temperature can be used as the trailing gas, but also an inert gas. With the new device, it is possible to remove a water-bound granulating aid from the product within a third of the normal vacuum drying time.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung erläutert.An embodiment of the invention is explained below with reference to the drawing.

In der Zeichnung ist ein Ausschnitt aus einer Behälterbodenwand 1 dargestellt, die eine Gaseinlaßöffnung 2 aufweist. Die Behälterbodenwand wird von einem Rohrstutzen 6 durchquert, der fest mit den metallischen Wandteilen der Bodenwand 1 verschweißt ist, wobei bei dem dargestellten Ausführungsbeispiel weiterhin ein Teil des Isoliermantels 14 und ein Teil des Wassermantels 15 erkennbar ist.In the drawing, a section of a container bottom wall 1 is shown, which has a gas inlet opening 2. The container bottom wall is traversed by a pipe socket 6, which is welded firmly to the metallic wall parts of the bottom wall 1, with part of the insulating jacket 14 and part of the water jacket 15 being still visible in the illustrated embodiment.

Bei dem dargestellten Ausführungsbeispiel schließt der Rohrstutzen 6 an die Öffnung der Behälterbodenwand so an, daß eine Ringstufe geschaffen wird, auf die sich eine in den Rohrstutzen 6 einsetzbare Gasführungspatrone 3 abstützt. Die Abstützung erfolgt dabei unter Zwischenschaltung einer Ringdichtung 9.In the illustrated embodiment, the pipe socket 6 connects to the opening of the container bottom wall in such a way that an annular step is created, on which a gas guide cartridge 3 which can be inserted into the pipe socket 6 is supported. The support takes place with the interposition of an annular seal 9.

Die eigentliche Gaseinlaßöffnung 2 des Behälterbodens 1 oder der Gasführungspatrone 3 wird durch ein Siebgewebe 4 verschlossen, das sehr engmaschig ist, beispielsweise eine Maschenweite von 10 um aufweist.The actual gas inlet opening 2 of the container bottom 1 or the gas guide cartridge 3 is closed by a sieve fabric 4 which is very close-meshed, for example has a mesh size of 10 μm.

In den Raum des Rohrstutzens 6 führt eine Gaszuführungsleitung 7, die frei im Raum des Rohrstutzens 6 mündet, wobei zwischen dem Inneren dieser Gaszuführungsleitung 7 und dem Innenraum 5 der Gasführungspatrone 3 eine Verbindung durch Gasöffnungen 12 hergestellt wird, die in der Zeichnung erkennbar sind.In the space of the pipe socket 6 leads a gas supply line 7, which opens freely in the space of the pipe socket 6, a connection being made through gas openings 12 between the inside of this gas supply line 7 and the interior 5 of the gas guide cartridge 3, which can be seen in the drawing.

Die Gasführungspatrone 3 weist an ihrer Außenseite einen Ringkragen 8 auf, mit dem sie sich auf dem äußeren Teil des Rohrstutzens 6 abstützt, und zwar ebenfalls wiederum unter Zwischenschaltung einer Ringdichtung 10. Die Festlegung der Gasführungspatrone 3 an dem Rohrstutzen 6 erfolgt über einen Spannring 11, so daß eine vakuumdichte Verbindung zwischen der Gasführungspatrone 3 und dem Rohrstutzen 6 sowie dem Innenraum des eigentlichen Rührwerksbehälters geschaffen wird.The gas guide cartridge 3 has on its outside an annular collar 8 with which it is supported on the outer part of the pipe socket 6, again again with the interposition of an annular seal 10. The gas guide cartridge 3 is fixed on the pipe socket 6 via a clamping ring 11, so that a vacuum-tight connection between the gas guide cartridge 3 and the pipe socket 6 and the In nenraum of the actual agitator tank is created.

In einem Rührwerksbehälter, der neuerungsgemäß ausgebildet ist, können sechs solcher Gasführungspatronen 3 und Rohrstutzen 6 vorgesehen sein, und auch die im Zentrum des Rührwerksbehälterbodens angeordnete Entleerungsklappe kann zusätzlich mit einer Gasführungspatrone 3 und einem Rohrstutzen 6 versehen sein.Six such gas guide cartridges 3 and pipe sockets 6 can be provided in an agitator tank which is designed in accordance with the innovation, and the emptying flap arranged in the center of the agitator tank bottom can additionally be provided with a gas guide cartridge 3 and a pipe connector 6.

Die neue Vorrichtung ermöglicht die Zufuhr von Schleppgas in einen Rührwerksbehälter in 35großem Umfang, so daß dadurch die Trocknungszeit des Behälterinhaltes erheblich verringert werden kann.The new device enables the supply of entraining gas to a large extent in an agitator container, so that the drying time of the container contents can thereby be considerably reduced.

Claims (8)

1. Rührwerksbehälter zum Trocknen und ggf. Granulieren von schüttfähigen Produkten, insbesondere für pharmazeutische Produkte, gekennzeichnet durch die Behälterbodenwand (1) durchquerende Gaseinlaßöffnungen (2), in die je eine Gasführungspatrone (3) einsetzbar ist, die an der dem Behälterinnenraum zugewandten Seite und gegenüber ihrem Innenraum (5) durch ein Siebgewebe (4) abgeschlossen ist.1. agitator container for drying and, if necessary, granulating pourable products, in particular for pharmaceutical products, characterized by gas inlet openings (2) which pass through the bottom wall of the container (1), into each of which a gas guide cartridge (3) can be inserted, on the side facing the container interior and is closed off from its interior (5) by a sieve fabric (4). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Siebgewebe (4) aus Edelstahl besteht und eine Siebweite von etwa 10 um aufweist.2. Device according to claim 1, characterized in that the sieve fabric (4) consists of stainless steel and has a sieve width of about 10 microns. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in die Isoliermantelkonstruktion des Behälters Rohrstutzen (6) eingesetzt sind, die an ihrer zum Behälterinnenraum hin gerichteten Seite die Gaseinlaßöffnung definieren und die über die Behälteraußenseite nach außen vorstehen und zur Aufnahme der Gasführungspatronen (3) dienen.3. Apparatus according to claim 1 or 2, characterized in that in the insulating jacket construction of the container pipe socket (6) are used which define the gas inlet opening on their side facing the container interior and which protrude beyond the outside of the container and for receiving the gas guide cartridges ( 3) serve. 4. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zu jedem Rohrstutzen (6) eine Gaszuführungsleitung (7) führt, die in den Innenraum des Rohrstutzens (6) mündet.4. Device according to one of the preceding claims, characterized in that to each pipe socket (6) leads a gas supply line (7) which opens into the interior of the pipe socket (6). 5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jede Gasführungspatrone (3) aus einem Zylinderkörper besteht, der einenendes durch das Siebgewebe (4) abgeschlossen ist, wobei sich dieses Ende der Gasführungspatrone abdichtend im Bereich der Gaseinlaßöffnung (2) an der Innenseite des Rohrstutzens (6) abstützt und das andere Ende der Gasführungspatrone (3) sich mittels eines Ringkragens (8) abdichtend abstützt und hier festlegbar ist.5. Device according to one of the preceding claims, characterized in that each gas guide cartridge (3) consists of a cylinder body, one end of which is closed by the screen fabric (4), this end of the gas guide cartridge sealingly in the region of the gas inlet opening (2) on the Is supported on the inside of the pipe socket (6) and the other end of the gas guide cartridge (3) is supported in a sealing manner by means of an annular collar (8) and can be fixed here. 6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Abdichtung der Gasführungspatrone (3) innerhalb des Rohrstutzens (6) über Ringdichtungen (9 und 10) erfolgt.6. Device according to one of the preceding claims, characterized in that the sealing of the gas guide cartridge (3) within the pipe socket (6) via ring seals (9 and 10). 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Festlegung der Gasführungspatrone (3) innerhalb des Rohrstutzens (6) durch einen Schnellverschluß (Spannring 11) erfolgt.7. Device according to one of the preceding claims, characterized in that the gas guide cartridge (3) is fixed inside the pipe socket (6) by a quick-release fastener (clamping ring 11). 8. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verbindung zwischen dem Inneren der Gaszuführungsleitung (7) und dem Inneren der Gasführungspatrone (3) über in dem Mantel der Gasführungspatrone (3) vorgesehene Gasöffnungen (12) erfolgt.8. Device according to one of the preceding claims, characterized in that the connection between the inside of the gas supply line (7) and the inside of the gas guide cartridge (3) via gas openings (3) provided in the jacket of the gas guide cartridge (3).
EP94117059A 1994-02-16 1994-10-28 Receptacle with stirring device Expired - Lifetime EP0668478B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9402499U 1994-02-16
DE9402499U DE9402499U1 (en) 1994-02-16 1994-02-16 Agitator tank

Publications (2)

Publication Number Publication Date
EP0668478A1 true EP0668478A1 (en) 1995-08-23
EP0668478B1 EP0668478B1 (en) 1998-07-22

Family

ID=6904618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117059A Expired - Lifetime EP0668478B1 (en) 1994-02-16 1994-10-28 Receptacle with stirring device

Country Status (2)

Country Link
EP (1) EP0668478B1 (en)
DE (2) DE9402499U1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040081704A1 (en) 1998-02-13 2004-04-29 Centerpulse Biologics Inc. Implantable putty material
US20020114795A1 (en) 2000-12-22 2002-08-22 Thorne Kevin J. Composition and process for bone growth and repair
US7166133B2 (en) 2002-06-13 2007-01-23 Kensey Nash Corporation Devices and methods for treating defects in the tissue of a living being
US7718616B2 (en) 2006-12-21 2010-05-18 Zimmer Orthobiologics, Inc. Bone growth particles and osteoinductive composition thereof
JP2013542837A (en) 2010-11-15 2013-11-28 ジンマー オーソバイオロジクス，インコーポレイティド Bone void filler

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191312232A (en) * 1912-08-26 1914-01-08 Theodor Otto Franke Improvements in Processes and Apparatus for Heating Material Containing Liquid.
US3829022A (en) * 1973-04-04 1974-08-13 Material Control Inc Aerating device for pulverulent material
US3862707A (en) * 1973-05-04 1975-01-28 Material Control Inc Bin aerator assembly or unit
US3913238A (en) * 1972-07-20 1975-10-21 Day J H Co Method and apparatus for drying particulate materials
EP0019594A1 (en) * 1979-05-21 1980-11-26 Glatt Maschinen- und Apparatebau AG Apparatus for producing granules or agglomerates
US4465238A (en) * 1981-09-04 1984-08-14 Jhina Patel Filter for hot air nozzle
GB2158365A (en) * 1985-05-09 1985-11-13 Littleford Bros Inc Combined mixing, reacting, drying and filtering device
EP0268691A1 (en) * 1986-11-20 1988-06-01 Thomas Lammers Device for drying construction parts furnished with a surface layer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191312232A (en) * 1912-08-26 1914-01-08 Theodor Otto Franke Improvements in Processes and Apparatus for Heating Material Containing Liquid.
US3913238A (en) * 1972-07-20 1975-10-21 Day J H Co Method and apparatus for drying particulate materials
US3829022A (en) * 1973-04-04 1974-08-13 Material Control Inc Aerating device for pulverulent material
US3862707A (en) * 1973-05-04 1975-01-28 Material Control Inc Bin aerator assembly or unit
EP0019594A1 (en) * 1979-05-21 1980-11-26 Glatt Maschinen- und Apparatebau AG Apparatus for producing granules or agglomerates
US4465238A (en) * 1981-09-04 1984-08-14 Jhina Patel Filter for hot air nozzle
GB2158365A (en) * 1985-05-09 1985-11-13 Littleford Bros Inc Combined mixing, reacting, drying and filtering device
EP0268691A1 (en) * 1986-11-20 1988-06-01 Thomas Lammers Device for drying construction parts furnished with a surface layer

Also Published As

Publication number Publication date
DE9402499U1 (en) 1994-07-14
EP0668478B1 (en) 1998-07-22
DE59406496D1 (en) 1998-08-27

Similar Documents

Publication Publication Date Title
DE59610237C5 (en) Device for dedusting gas
DE102007039759B3 (en) Method and device for contamination-free loading and unloading
CH665601A5 (en) APPARATUS FOR PROCESSING GRAINY MATERIAL.
EP0781587A1 (en) Apparatus for dedusting a gas
WO1993023139A1 (en) Filtering device
EP0916381A3 (en) Separator of products
EP1076593A1 (en) Process apparatus with an outgoing-air filter
EP0939677B1 (en) Centrifuge with inside-out filter
EP3908391A1 (en) Filter system for purifying a gas flow charged with particles, and arrangement for purifying a gas flow, charged with particles, of a fluidising apparatus by means of a filter system
DE1486813C3 (en) Filter device, in particular pressure or vacuum filter device with one or more filter plates
EP0668478A1 (en) Receptacle with stirring device
DE10125732B4 (en) Filter for dedusting of a particulate material containing process air in a process apparatus and such process apparatus
DE3426527A1 (en) CHAMBER FILTER PRESS
EP0211343A1 (en) Apparatus for treating substances in a gas stream
DE69830042T2 (en) Filter with pressure valve for separating oil from air for compressed air supply systems
DE3726610A1 (en) Grinding-body separating system in agitator ball mills
EP0536650B1 (en) Process and apparatus for drying moist substances
DE4440773A1 (en) Filter device for the separation of particles or powder from a gas stream
DE4125358A1 (en) Device to remove solid particles from liq. filter
DE2406874C2 (en) Method and device for mixing goods containing a solid component
DE3839607A1 (en) Method and device for dry-sieving
DE4336870C2 (en) Filter cartridge
DE611918C (en) Device for sieving solid components out of liquids
EP0645446B1 (en) Device for retaining stabilising agents for drinks and other fluids
DE19528775C1 (en) Filter assembly for separating dispersed solids of liquids from liquid

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI

17P Request for examination filed

Effective date: 19950705

17Q First examination report despatched

Effective date: 19970402

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59406496

Country of ref document: DE

Date of ref document: 19980827

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: PATENTANWALTSBUERO EDER AG

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980924

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20061024

Year of fee payment: 13

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20071028

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20080630

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20061020

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071031

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20120824

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20131023

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59406496

Country of ref document: DE

Effective date: 20140501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140501

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL