EP0774299B1 - Sealing device for the protective hood of a drum mill - Google Patents

Sealing device for the protective hood of a drum mill Download PDF

Info

Publication number
EP0774299B1
EP0774299B1 EP96116398A EP96116398A EP0774299B1 EP 0774299 B1 EP0774299 B1 EP 0774299B1 EP 96116398 A EP96116398 A EP 96116398A EP 96116398 A EP96116398 A EP 96116398A EP 0774299 B1 EP0774299 B1 EP 0774299B1
Authority
EP
European Patent Office
Prior art keywords
ring
sealing
protective hood
seal
track
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
EP96116398A
Other languages
German (de)
French (fr)
Other versions
EP0774299A1 (en
Inventor
Mark Rypalla
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.)
A Friedrich Flender AG
Original Assignee
A Friedrich Flender AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7777521&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0774299(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by A Friedrich Flender AG filed Critical A Friedrich Flender AG
Publication of EP0774299A1 publication Critical patent/EP0774299A1/en
Application granted granted Critical
Publication of EP0774299B1 publication Critical patent/EP0774299B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/181—Bearings specially adapted for tumbling mills
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/903—Seal for rotating kiln or drum

Definitions

  • the invention relates to a device for oil-impermeable Sealing a stationary protective hood against a rotating one Mill body with the features of the preamble of the claim 1.
  • the known oil-impermeable seals for tube mills correspond in structure to the Radial shaft seals.
  • a sharp-edged seal Sealing lip the stationary protective hood against the rotating Tube mill jacket or a correspondingly designed surface a ring gear surrounding the tube mill.
  • the high Temperatures at the mill jacket and the heavy dust accumulation during of the grinding process lead to embrittlement of the elastic Sealing material (Perbunan) and, as a result, to failure the seal.
  • US-A-4 966 471 there is a sealing arrangement for the neck bearing described a tube mill.
  • This sealing arrangement contains one sealing ring made of a fibrous material, which by is enclosed in a band, which in turn is surrounded by a rope is surrounded by the springs to hold the felt ring in Hold the sealing position on the tread.
  • the retaining ring is the sealing ring on the side of an oil drip pan held.
  • Two such oil sumps are on both sides arranged of the camp and extend over 180 ° around the lower half of the mill neck.
  • the invention is therefore based on the object Generic device for sealing a mill body to design such that the seal is easy in the Construction and assembly is inexpensive and that Materials with a long service life can be used.
  • the tube mill consists of a mill body with a cylindrical shell 1 and a conical end wall 2, the both on the inside with a wear-resistant lining are provided.
  • a mill neck 3 On the end wall 2 is a mill neck 3 connected to the feeding of the material to be shredded and / or the removal of the ground material with the help of a hot Air flow serves.
  • the jacket 1 is surrounded by two races 4, each are attached to the jacket 1 via a web 5.
  • the race 4 is stored on oil-lubricated, not shown sliding shoes.
  • the rotating mill body is driven, as usual, by a motor, the output shaft of which carries a pinion, the into a jacket 1 surrounding the jacket 1 fixed ring gear engages.
  • the race 4 with the Sliding shoe storage or the gear rim is of a fixed Protective hood 6 enclosed.
  • This sealing system consists of one or more fixed sealing cords 7 a wear-resistant and temperature-resistant material.
  • the Sealing cord 7 or sealing cords 7 slide on one machined career 8, which according to FIG. 2 on the jacket 1st is formed.
  • the sealing cord 7 is on a compressible ring 9 supported, the required for the sealing effect Contact pressure generated.
  • the compressible ring 9 is also similar Concentricity error when running as a radial seal (Fig. 2) and axial runout in the design as an axial seal (Fig. 3) off.
  • a one-part or multi-part retaining ring 10 is by means of screws 11 attached to the protective hood 6 and in this way holds the compressible ring 9 and the sealing cord 7 on the protective hood 6.
  • the retaining ring 10 bounded in connection with part of the Side wall of the protective hood 6 an expansion space in which the compressible ring 9 held under constant tension and is protected from external influences.
  • Between the rotating Career 8 and the stationary retaining ring 10 and the stationary Protective hood 6 is kept as narrow a gap as possible prevents the sealing cord 7 from oozing out to the side.
  • On the other side, not shown, of the race 8 is one similar seal arranged.
  • a brush ring 12 is fastened via the screws 11, whose brushes 13 touch the jacket 1. This brush ring 12 protects the seal against the coarsest dirt from outside and against hard deposits that damage the sealing cord 7 could.
  • the tube mill shown in the drawing rotates by one horizontal axis of rotation.
  • the invention is also for Tube mills with a vertical axis of rotation applicable.
  • FIG. 2 shows a radial seal with a parallel to the axis of rotation 8.
  • the Sealing can be designed in the same way as an axial seal become. Such an axial seal is shown in FIG. 3 shown.
  • the machined one Raceway 8 to apply the sealing cord 7 perpendicular to The axis of rotation of the mill body is laid on the web 5, which carries the race 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Sealing Devices (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur ölundurchlässigen Abdichtung einer ortsfesten Schutzhaube gegen einen rotierenden Mühlenkörper mit den Merkmalen des Oberbegriffes des Anspruches 1.The invention relates to a device for oil-impermeable Sealing a stationary protective hood against a rotating one Mill body with the features of the preamble of the claim 1.

Die bekannten ölundurchlässigen Dichtungen für Rohrmühlen (DE-A-4 140 388, EP-B-0 175 109) entsprechen im Aufbau den Radialwellendichtringen. Dabei dichtet eine scharfkantige Dichtlippe die ortsfeste Schutzhaube gegen den rotierenden Rohrmühlenmantel oder eine entsprechend gestaltete Fläche an einem die Rohrmühle umgebenden Zahnkranz ab. Die hohen Temperaturen am Mühlenmantel und der starke Staubanfall während des Mahlprozesses führen zu einer Versprödung des elastischen Dichtungswerkstoffes (Perbunan) und als Folge davon zum Ausfall der Dichtung.The known oil-impermeable seals for tube mills (DE-A-4 140 388, EP-B-0 175 109) correspond in structure to the Radial shaft seals. A sharp-edged seal Sealing lip the stationary protective hood against the rotating Tube mill jacket or a correspondingly designed surface a ring gear surrounding the tube mill. The high Temperatures at the mill jacket and the heavy dust accumulation during of the grinding process lead to embrittlement of the elastic Sealing material (Perbunan) and, as a result, to failure the seal.

In der US-A-4 966 471 ist eine Dichtanordnung für das Halslager einer Rohrmühle beschrieben. Diese Dichtanordnung enthält einen aus einem faserigen Material bestehenden Dichtring, der von einem Band umschlossen ist, das seinerseits von einem Seil umgeben ist, an das Federn angreifen, um den Filzring in dichtender Position an der Lauffläche halten. Über einen Haltering ist der Dichtring seitlich an einer Ölauffangwanne gehalten. Zwei solcher Ölauffangwannen sind zu beiden Seiten des Lagers angeordnet und erstrecken sich über 180° rund um die untere Hälfte des Mühlenhalses. Bei dieser Dichtanordnung erfolgt das Andrücken des Dichtringes über ein gegen Temperatur- und Verschmutzung empfindliches, federndes Band. Außerdem besteht die Gefahr, daß der angedrückte Dichtring aufgrund der einseitige Halterung seitlich ausweichen kann, wodurch die Dichtung unwirksam wird.In US-A-4 966 471 there is a sealing arrangement for the neck bearing described a tube mill. This sealing arrangement contains one sealing ring made of a fibrous material, which by is enclosed in a band, which in turn is surrounded by a rope is surrounded by the springs to hold the felt ring in Hold the sealing position on the tread. About one The retaining ring is the sealing ring on the side of an oil drip pan held. Two such oil sumps are on both sides arranged of the camp and extend over 180 ° around the lower half of the mill neck. With this sealing arrangement the sealing ring is pressed against against Resilient tape sensitive to temperature and dirt. There is also a risk that the pressed sealing ring can dodge sideways due to the one-sided bracket, which makes the seal ineffective.

Aus der US-A-3 051 399 ist die Abdichtung des Lagers für den Mühlenhals einer Rohrmühle bekannt. Dieses Lager ist von einer Haube umgeben, die in einem taschenförmigen Dichtringträger endet. Innerhalb des Dichtringträger befindet sich ein elastischer Dichtring mit einer Dichtlippe, die über eine Spiralfeder gegen die Dichtfläche gedrückt wird. From US-A-3 051 399 the seal of the bearing for the Mill neck of a tube mill known. This camp is from one Hood surrounded by a pocket-shaped seal ring carrier ends. There is a inside the seal ring carrier elastic sealing ring with a sealing lip that has a Coil spring is pressed against the sealing surface.

Der Erfindung liegt daher die Aufgabe zugrunde, die gattungsgemäße Vorrichtung zur Abdichtung eines Mühlenkörpers derart zu gestalten, daß die Abdichtung einfach in der Konstruktion und in der Montage ist und daß preisgünstige Werkstoffe mit langer Lebensdauer eingesetzt werden können.The invention is therefore based on the object Generic device for sealing a mill body to design such that the seal is easy in the Construction and assembly is inexpensive and that Materials with a long service life can be used.

Diese Aufgabe wird bei einer gattungsgemäßen Vorrichtung erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved in a generic device according to the invention by the characterizing features of Claim 1 solved. Advantageous embodiments of the invention are the subject of the subclaims.

Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher erläutert.Several embodiments of the invention are in the Drawing shown and are explained in more detail below.

Es zeigen

Fig. 1
im Längsschnitt ein Ende einer Rohrmühle,
Fig. 2
die Einzelheit Z nach Fig. 1 und
Fig. 3
eine andere Ausführungsform des Abdichtung.
Show it
Fig. 1
in longitudinal section one end of a tube mill,
Fig. 2
the detail Z according to Fig. 1 and
Fig. 3
another embodiment of the seal.

Die Rohrmühle besteht aus einem Mühlenkörper mit einem zylindrischen Mantel 1 und einer konischen Stirnwand 2, die beide auf der Innenseite mit einer verschleißfesten Auskleidung versehen sind. An die Stirnwand 2 ist ein Mühlenhals 3 angeschlossen, der der Zuführung des zu zerkleinernden Gutes und/oder der Abführung des Mahlgutes mit Hilfe eines heißen Tragluftstromes dient.The tube mill consists of a mill body with a cylindrical shell 1 and a conical end wall 2, the both on the inside with a wear-resistant lining are provided. On the end wall 2 is a mill neck 3 connected to the feeding of the material to be shredded and / or the removal of the ground material with the help of a hot Air flow serves.

Der Mantel 1 ist von zwei Laufringen 4 umgeben, die jeweils über einen Steg 5 an dem Mantel 1 befestigt sind. In der Zeichnung ist nur ein Laufring 4 gezeigt ist. Der Laufring 4 ist auf ölgeschmierten, nicht gezeigten Gleitschuhen gelagert. Der Antrieb des rotierenden Mühlenkörper erfolgt, wie üblich, durch einen Motor, dessen Abtriebswelle ein Ritzel trägt, das in einen den Mantel 1 umgebenden und an dem Mantel 1 befestigten Zahnkranz eingreift. Der Laufring 4 mit der Gleitschuhlagerung oder der Zahnkranz ist von einer ortfesten Schutzhaube 6 umschlossen.The jacket 1 is surrounded by two races 4, each are attached to the jacket 1 via a web 5. In the Drawing is only one race 4 is shown. The race 4 is stored on oil-lubricated, not shown sliding shoes. The rotating mill body is driven, as usual, by a motor, the output shaft of which carries a pinion, the into a jacket 1 surrounding the jacket 1 fixed ring gear engages. The race 4 with the Sliding shoe storage or the gear rim is of a fixed Protective hood 6 enclosed.

Um die ortsfeste Schutzhaube 6 gegenüber dem rotierenden Mühlenkörper öldicht abzudichten, wird das nachfolgende beschriebene Abdichtsystem verwendet. Dieses Abdichtsystem besteht aus einer oder mehreren ortsfesten Dichtschnüren 7 aus einem verschleißfesten und temperaturbeständigen Werkstoff. Die Dichtschnur 7 oder die Dichtschnüren 7 gleiten auf einer bearbeiteten Laufbahn 8, die nach Fig. 2 auf dem Mantel 1 gebildet ist.To the fixed protective hood 6 against the rotating Sealing the mill body oil-tight is the following sealing system described used. This sealing system consists of one or more fixed sealing cords 7 a wear-resistant and temperature-resistant material. The Sealing cord 7 or sealing cords 7 slide on one machined career 8, which according to FIG. 2 on the jacket 1st is formed.

Die Dichtschnur 7 ist auf einem kompressiblen Ring 9 abgestützt, der den für die Dichtwirkung erforderlichen Anpreßdruck erzeugt. Außerdem gleicht der kompressible Ring 9 Rundlauffehler bei der Ausführung als Radialdichtung (Fig. 2) und Planlauffehler bei der Ausführung als Axialdichtung (Fig. 3) aus. The sealing cord 7 is on a compressible ring 9 supported, the required for the sealing effect Contact pressure generated. The compressible ring 9 is also similar Concentricity error when running as a radial seal (Fig. 2) and axial runout in the design as an axial seal (Fig. 3) off.

Ein ein- oder mehrteiliger Haltering 10 ist mittels Schrauben 11 an der Schutzhaube 6 befestigt und hält auf diese Weise den kompressiblen Ring 9 und die Dichtschnur 7 an der Schutzhaube 6. Der Haltering 10 begrenzt in Verbindung mit einem Teil der Seitenwand der Schutzhaube 6 einen Ausdehnungsraum, in dem der kompressible Ring 9 unter dauernder Vorspannung gehalten und vor äußeren Einflüssen geschützt ist. Zwischen der rotierenden Laufbahn 8 und dem ortsfesten Haltering 10 sowie der ortsfesten Schutzhaube 6 ist ein möglichst enger Spalt eingehalten, der ein seitliches Herausquillen der Dichtschnur 7 verhindert. Auf der anderen, nicht gezeigten Seite des Laufringes 8 ist eine gleichartige Abdichtung angeordnet.A one-part or multi-part retaining ring 10 is by means of screws 11 attached to the protective hood 6 and in this way holds the compressible ring 9 and the sealing cord 7 on the protective hood 6. The retaining ring 10 bounded in connection with part of the Side wall of the protective hood 6 an expansion space in which the compressible ring 9 held under constant tension and is protected from external influences. Between the rotating Career 8 and the stationary retaining ring 10 and the stationary Protective hood 6 is kept as narrow a gap as possible prevents the sealing cord 7 from oozing out to the side. On the other side, not shown, of the race 8 is one similar seal arranged.

An dem Haltering 10 ist auf der der Schutzhaube 6 abgewandten Seite über die Schrauben 11 ein Bürstenring 12 befestigt, dessen Bürsten 13 den Mantel 1 berühren. Dieser Bürstenring 12 schützt die Abdichtung vor gröbsten Verschmutzungen von außen und vor harten Ablagerungen, die die Dichtschnur 7 beschädigen könnten.On the retaining ring 10 is facing away from the protective hood 6 A brush ring 12 is fastened via the screws 11, whose brushes 13 touch the jacket 1. This brush ring 12 protects the seal against the coarsest dirt from outside and against hard deposits that damage the sealing cord 7 could.

Die in der Zeichnung dargestellte Rohrmühle rotiert um eine waagerechte Rotationsachse. Die Erfindung ist auch für Rohrmühlen mit einer vertikalen Rotationsachse anwendbar.The tube mill shown in the drawing rotates by one horizontal axis of rotation. The invention is also for Tube mills with a vertical axis of rotation applicable.

Die Abdichtung gemäß Fig. 2 zeigt eine Radialdichtung mit einer parallel zu der Rotationsachse liegenden Laufbahn 8. Die Abdichtung kann in gleicher Weise als Axialdichtung ausgebildet werden. Eine solche Axialdichtung ist in der Fig. 3 dargestellt. Bei dieser Ausführungsform ist die bearbeitete Laufbahn 8 zur Anlage der Dichtschnur 7 senkrecht zur Rotationsachse des Mühlenkörpers verlegt und zwar auf dem Steg 5, der den Laufring 4 trägt.2 shows a radial seal with a parallel to the axis of rotation 8. The Sealing can be designed in the same way as an axial seal become. Such an axial seal is shown in FIG. 3 shown. In this embodiment, the machined one Raceway 8 to apply the sealing cord 7 perpendicular to The axis of rotation of the mill body is laid on the web 5, which carries the race 4.

Claims (4)

  1. Device for oil-impermeable sealing of a stationary protective hood (6) against a rotating mill body, wherein a stationary sealing ring is pressed by way of a biassed ring (9) against a track (8), which is formed at and rotates with the mill body, and a retaining ring (10) is connected with the protective hood (6), characterised in that the stationary sealing ring consists of at least one sealing cord (7), that the biassed ring (9) is compressible, that the retaining ring (10) together with a part of the side wall of the protective hood (6) bounds an expansion space for the sealing cord (7) and for the compressible ring (9), in which the compressible ring (9) is held under permanent bias, and that a narrow gap, which prevents a lateral swelling out of the sealing cord (7), is maintained between the retaining ring (10) and the protective hood (6) on the one hand and the track (8) on the other hand.
  2. Device according to claim 1, characterised in that a brush ring (12), the brushes (13) of which bear against the track (8), is connected with the retaining ring (10) on the side, which is remote from the protective hood (6), of the sealing cord (7).
  3. Device according to claim 1 or 2, characterised in that the track (8) is arranged parallel to the horizontally or vertically extending axis of rotation of the mill body and that the seal is constructed as a radial seal.
  4. Device according to claim 1 or 2, characterised in that the track (8) is arranged perpendicularly relative to the horizontally or vertically extending axis of rotation of the mill body and that the seal is constructed as an axial seal.
EP96116398A 1995-11-15 1996-10-12 Sealing device for the protective hood of a drum mill Expired - Lifetime EP0774299B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19542563 1995-11-15
DE19542563A DE19542563A1 (en) 1995-11-15 1995-11-15 Device for sealing a protective hood of a mill body

Publications (2)

Publication Number Publication Date
EP0774299A1 EP0774299A1 (en) 1997-05-21
EP0774299B1 true EP0774299B1 (en) 2001-12-12

Family

ID=7777521

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96116398A Expired - Lifetime EP0774299B1 (en) 1995-11-15 1996-10-12 Sealing device for the protective hood of a drum mill

Country Status (4)

Country Link
US (1) US5769428A (en)
EP (1) EP0774299B1 (en)
DE (2) DE19542563A1 (en)
DK (1) DK0774299T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19645163C2 (en) * 1996-11-02 2000-10-05 Mtu Muenchen Gmbh Brush seal for rotor-stator arrangement
CA2384357C (en) 2000-07-10 2004-08-10 Yoshinori Tanaka Cleaning article
US6679500B1 (en) * 2002-09-25 2004-01-20 Alstom (Switzerland) Ltd Coal pulverizer brush seal assembly
DE10305147B4 (en) * 2003-02-08 2005-03-17 Vta Verfahrenstechnik Und Automatisierung Gmbh Rotary kiln with longitudinal sealing of the heating tunnel and method for producing such a longitudinal seal
DE20302000U1 (en) * 2003-02-08 2004-07-08 Vta Verfahrenstechnik Und Automatisierung Gmbh Ring sealing arrangement for an indirectly heated rotary kiln
US7686612B1 (en) 2006-12-28 2010-03-30 Barry Buteau Rotary kiln seal
CN102580825A (en) * 2012-02-27 2012-07-18 南京凯盛国际工程有限公司 Sealing compressing device for mill
CN103899757A (en) * 2014-04-08 2014-07-02 蓝小玲 Rotary cylinder seal device
CN103990516B (en) * 2014-05-14 2016-06-22 洛阳诚创耐磨材料有限公司 Mining grinding mill feed pipe outer sealing device
CN104074976A (en) * 2014-06-28 2014-10-01 山东省章丘鼓风机股份有限公司 Ball crusher gearwheel cover with novel sealing device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE491748C (en) * 1930-02-14 Maschb Anstalt Humboldt Sealing device for the inlet or outlet nozzle of pipe mills
DE590792C (en) * 1931-08-19 1934-01-09 Fried Krupp Grusonwerk Akt Ges Rohrmühle
US2441901A (en) * 1946-02-09 1948-05-18 Smidth & Co As F L Mill
DE1028858B (en) * 1955-02-26 1958-04-24 Miag Muehlenbau & Ind Gmbh Tilting sliding bearing for the storage of hollow trunnions of tubular mills
US3051399A (en) * 1959-11-10 1962-08-28 Nordberg Manufacturing Co Grinding mill trunnion
GB1413853A (en) * 1972-11-03 1975-11-12 Stromsholmens Mek Verkstad Sealing device
DE2741738C3 (en) * 1977-09-16 1981-04-02 Smit Ovens Nijmegen B.V., Nijmegen Front jacket sliding seal between a stationary hood and a rotary kiln end
GB2098712A (en) * 1981-05-18 1982-11-24 Philips Electronic Associated Air seal for tumbler drier door
DE3433905A1 (en) * 1984-09-14 1986-03-27 Krupp Polysius Ag, 4720 Beckum TURN DRUM
US4804195A (en) * 1986-12-29 1989-02-14 Parker Thomas H High temperature sealing device
US4966471A (en) * 1990-01-08 1990-10-30 Foster Wheeler Energy Corporation Trunnion bearing dust seal
GB2239925A (en) * 1990-01-11 1991-07-17 Dowty Seals Ltd Seals
DE4031928C2 (en) * 1990-10-09 2000-09-21 Babcock Energie Umwelt Tube mill
DE4140388C2 (en) * 1991-12-07 2002-04-18 Babcock Energie Umwelt tube mill
US5425543A (en) * 1993-09-17 1995-06-20 Buckshaw; Dennis J. Seal assembly for rotating shaft
US5647598A (en) * 1995-07-19 1997-07-15 Vaudolon; Jean-Pierre Stuffing box seal having braided packings and lip seal rings in combination with a shaft sleeve

Also Published As

Publication number Publication date
US5769428A (en) 1998-06-23
DK0774299T3 (en) 2002-04-02
DE59608433D1 (en) 2002-01-24
EP0774299A1 (en) 1997-05-21
DE19542563A1 (en) 1997-05-22

Similar Documents

Publication Publication Date Title
EP1039161B1 (en) Shaft seal
DE69729862T2 (en) SEALING DEVICE FOR BEARING AND ARRANGEMENT FOR SEALING A BEARING DEVICE
EP0664400B1 (en) Magnetic drive pump
EP0774299B1 (en) Sealing device for the protective hood of a drum mill
DE2322458A1 (en) SHAFT SEAL
DE69802722T2 (en) Bearing seal with even liquid flushing
DE2754168A1 (en) SHAFT SEAL
DE102006024154B3 (en) Shaft seal and roller for a conveyer has inner and outer seals with rings and a projection at one ring that wears on an opposite ring on rotation to reduce the gap
DE2504655A1 (en) POETRY
DE69818914T2 (en) Shaft seal system
DE2538793A1 (en) CIRCULATING SAND BLAST FAN HEAD
EP1753903A1 (en) Top roller for spinning machine drafting systems
EP0551343B1 (en) Pump drive for a motor vehicle automatic gearbox
DE2610974C2 (en) Sealed double row rolling bearing with mounting flanges
DE1400440A1 (en) Bearings for high-speed shafts
DE3408664A1 (en) SEALING FOR A ROLLER BEARING JOINT
EP2725246A2 (en) Rail vehicle drive motor bearing arrangement
DE102022001423A1 (en) Gear motor with an electric motor driving a gear
DE3838996C2 (en)
DE19720778C1 (en) Sliding ring seal unit e.g. for vehicle
DE19750205A1 (en) Machine tool roller bearing has air-blown brush seal
DE2332184A1 (en) LUBRICATION SYSTEM FOR THE FRONT FINAL DRIVE OF CONCRETE MIXING DRUMS MOUNTED ON TRUCKS
DE6924791U (en) SEALING UNIT FOR ROLLER BEARING
DE2330468C2 (en) Shaft sealing
DE102018115554A1 (en) Rolling bearing and electric motor unit with rolling bearing

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 DK FR LI

17P Request for examination filed

Effective date: 19970606

17Q First examination report despatched

Effective date: 20000925

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

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: A. FRIEDR. FLENDER GMBH

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 DK FR LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59608433

Country of ref document: DE

Date of ref document: 20020124

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: KHD HUMBOLDT WEDAG AG

Effective date: 20020910

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20050428

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

Ref country code: FR

Payment date: 20051014

Year of fee payment: 10

Ref country code: CH

Payment date: 20051014

Year of fee payment: 10

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

Ref country code: DK

Payment date: 20051017

Year of fee payment: 10

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

Ref country code: DE

Payment date: 20051215

Year of fee payment: 10

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

Ref country code: LI

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

Effective date: 20061031

Ref country code: DK

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

Effective date: 20061031

Ref country code: CH

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

Effective date: 20061031

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: 20070501

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070629

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: 20061031