DE1052192B - Sealing for a shaft duct through the wall of a space containing fine iron particles - Google Patents
Sealing for a shaft duct through the wall of a space containing fine iron particlesInfo
- Publication number
- DE1052192B DE1052192B DEN13866A DEN0013866A DE1052192B DE 1052192 B DE1052192 B DE 1052192B DE N13866 A DEN13866 A DE N13866A DE N0013866 A DEN0013866 A DE N0013866A DE 1052192 B DE1052192 B DE 1052192B
- Authority
- DE
- Germany
- Prior art keywords
- wall
- shaft
- magnets
- sealing
- iron particles
- 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.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 32
- 229910052742 iron Inorganic materials 0.000 title claims description 11
- 239000002245 particle Substances 0.000 title claims description 10
- 238000007789 sealing Methods 0.000 title claims 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 229910052788 barium Inorganic materials 0.000 claims 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 239000013078 crystal Substances 0.000 claims 1
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000005389 magnetism Effects 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 229910052712 strontium Inorganic materials 0.000 claims 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
Die Erfindung bezieht sich auf eine Abdichtung für Eisenteilchen mittels eines ringförmigen Magnets zwischen der Wand eines die Eisenteilchen enthaltenden Raumes und einer durch diese Wand geführten, gegenüber der Wand drehbaren Welle.The invention relates to a seal for iron particles by means of an annular magnet between the wall of a room containing the iron particles and one led through this wall, shaft rotatable with respect to the wall.
Eine solche Abdichtung ist von Bedeutung z. B. für Kupplungen, bei denen Eisenpulver, gegebenenfalls in einer Flüssigkeit, mittels eines Magnetfeldes die Kupplung herstellen kann. Dabei besteht ein Kupplungsteil gewöhnlich aus einer mit Eisenpulver gefüllten Trommel und der andere Kupplungsteil aus einer in diese Trommel eingeführten Welle, die vorzugsweise mittels Rollenlager in der Trommel gelagert ist. Es ist dabei wesentlich, die Lager vor hineindringendem Eisenpulver zu schützen.Such a seal is important e.g. B. for couplings where iron powder, optionally in a liquid, can produce the coupling by means of a magnetic field. There is a coupling part usually from a drum filled with iron powder and the other coupling part a shaft introduced into this drum, which is preferably mounted in the drum by means of roller bearings is. It is essential to protect the bearings from penetrating iron powder.
Es ist bereits bekannt, bei Eisenpulverkupplungen eine Abdichtung vorzusehen, die aus einem in der Wand angeordneten ringförmigen, in axialer Richtung magnetisierten Dauermagnet mit zwei Weicheisenringen besteht, welche die Welle in einem geringen Abstand umgeben. Der aus dem Dauermagnet und den beiden Weicheisenringen bestehende Magnetkreis wird durch die Welle geschlossen. Die sich in der Nähe dieser Abdichtung befindenden Eisenteilchen werden zwischen die Welle und die Weieheisenringe gezogen, so* daß an dieser Stelle eine Anhäufung von Eisenteilchen entsteht. Infolge Drehung dar Welle gegenüber dten Weicheisenringen führt diese Anhäufung bei Schlupfkupplungen zu Abnutzung und Reibungsverlusten.It is already known to provide a seal for iron powder couplings, which consists of an in the wall arranged annular permanent magnet magnetized in the axial direction with two Soft iron rings, which surround the shaft at a small distance. The one from the permanent magnet and the two soft iron rings existing magnetic circuit is closed by the shaft. the Any iron particles in the vicinity of this seal are caught between the shaft and the cast iron rings drawn so * that an accumulation of iron particles is formed at this point. As a result of rotation As opposed to the shaft compared to the soft iron rings, this accumulation leads to wear and tear in slip clutches Frictional losses.
Gemäß der Erfindung sind mindestens zwei ringförmige Magnete in einem geringen Abstand voneinander koaxial angeordnet und mit gleichnamigen Polen einander zugewendet vorgesehen, wobei ein Magnet im der Wand und der andere auf der Welle angebracht ist. Durch diese Anordnung und Magnetisierungsrichtung der Magnete wird erreicht, daß die maximale Konzentration des Magnetfeldes sich nicht in dem Raum zwischen den Magneten, sondern gerade an der Grenze dieses Raumes befindet. Infolgedessen wird ein sich in dem Raum befindendes Eisenteilchen aus dem Raum herausgestoßen, so daß die Bauart nach der Erfindung weniger Abnutzung und Reibungsverluste verursacht.According to the invention, at least two ring-shaped magnets are at a small distance from one another arranged coaxially and provided with poles of the same name facing one another, with a Magnet in the wall and the other on the shaft. Due to this arrangement and direction of magnetization the magnet is achieved that the maximum concentration of the magnetic field is not located in the space between the magnets, but just on the border of this space. Consequently an iron particle located in the room is pushed out of the room, so that the type according to the invention caused less wear and friction losses.
Bei einer vorteilhaften Ausführungsform der Erfindung liegen die Magnete nebeneinander und sind sie in axialer Riclitung magnetisiert.In an advantageous embodiment of the invention, the magnets are next to each other and they are magnetized in axial direction.
An Hand eines Ausführungsbeispiels wird die Erfindung näher erläutert.The invention is explained in more detail using an exemplary embodiment.
Fig. 1 zeigt einen Schnitt durch eine Abdichtung, die aus zwei nebeneinanderliegenden Dauermagneten besteht;Fig. 1 shows a section through a seal consisting of two adjacent permanent magnets consists;
Fig. 2 zeigt eine Abdichtung, die aus zwei einander umgebenden Dauermagneten besteht.Fig. 2 shows a seal which consists of two surrounding permanent magnets.
Abdictitung für eine Wellendurchführung durch die Wand eines feine Eisenteilchen enthaltenden RaumesSeal for a shaft penetration through the wall of a fine iron particle containing space
Anmelder:Applicant:
Ν. V. Philips' Gloeilampenfabriekenr
Eindhoven (Niederlande)Ν. V. Philips' Gloeilampenfabrieken r
Eindhoven (Netherlands)
Vertreter: Dipl.-Ing. K. Lengner, Patentanwalt,
Hamburg 1, Mönckebergstr. 7 Representative: Dipl.-Ing. K. Lengner, patent attorney,
Hamburg 1, Mönckebergstr. 7th
Beanspruchte Priorität:
Niederlande vom 14. Juli 1956Claimed priority:
Netherlands 14 July 1956
Wilhelmus Lambertus Vervest
und Godfried Hendrik Waarle,
Hilversum (Niederlande),
sind als Erfinder genannt wordenWilhelmus Lambertus Vervest
and Godfried Hendrik Waarle,
Hilversum (Netherlands),
have been named as inventors
Fig. 1 zeigt einen Teil einer Wand 1 einer Trommel, in der sich Eisenpulver 2 befindet; durch diese Wand ist eine Welle 3 geführt, die gegenüber der Wand 1 drehbar ist. In die Wand 1 ist ein ringförmiger Dauermagnet 4 eingelassen, der in axialer Richtung magnetisiert ist. Die WelleS ist von einem zweiten Dauermagnet 5 fest umgeben, der in einem geringen Abstand neben dem Dauermagnet 4 liegt, wobei die Nordpole der beiden Magnete einander zugewendet sind. Die größte Konzentration der magnetischen Kraftlinien liegt annähernd in der Fläche 6, so daß etwaige zwischen die Magnete 4 und 5 eingedrungene Eisenteilchen sich zu der Fläche 6 hinbewegen.Fig. 1 shows part of a wall 1 of a drum in which iron powder 2 is located; A shaft 3 , which is rotatable with respect to the wall 1, is guided through this wall. An annular permanent magnet 4 , which is magnetized in the axial direction, is let into the wall 1. The shaft S is firmly surrounded by a second permanent magnet 5 , which lies at a small distance next to the permanent magnet 4 , the north poles of the two magnets facing each other. The greatest concentration of the magnetic lines of force is approximately in the surface 6, so that any iron particles that have penetrated between the magnets 4 and 5 move towards the surface 6.
Nach Fig. 2 enthält eine Wand 11 einen Dauermagnet 12, und eine Welle 13 wird von einem Dauermagnet 14 fest umgeben. Die Magnetisierungsrichtung beider Magnete ist radial, und die Südpole beider Magnete liegen einander gegenüber. In dem Raum zwischen den Magneten befindet sich ein hoch konzentriertes Magnetfeld, dessen Konzentration an der Fläche 16 maximal ist. Infolgedessen werden in den Spalt zwischen den Magneten eingedrungene Eisenteilchen zu der Fläche 16 hinbewegt.According to FIG. 2, a wall 11 contains a permanent magnet 12, and a shaft 13 is firmly surrounded by a permanent magnet 14. The direction of magnetization of both magnets is radial, and the south poles of both magnets are opposite each other. In the space between the magnets there is a highly concentrated magnetic field, the concentration of which at the surface 16 is maximum. As a result, iron particles which have entered the gap between the magnets are moved toward the surface 16.
Für die Anordnung nach der Erfindung ist es vorteilhaft, Dauermagnete zu verwenden, die aus einem Material bestehen, das im wesentlichen nicht kubischeFor the arrangement according to the invention, it is advantageous to use permanent magnets that consist of a Material that is essentially not cubic
809 768/287809 768/287
Claims (2)
USA-Patentschrift Nr. 2 718 946.Considered publications:
U.S. Patent No. 2,718,946.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1052192X | 1956-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1052192B true DE1052192B (en) | 1959-03-05 |
Family
ID=19867893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEN13866A Pending DE1052192B (en) | 1956-07-14 | 1957-07-09 | Sealing for a shaft duct through the wall of a space containing fine iron particles |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1052192B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028454A1 (en) * | 1979-07-30 | 1981-02-19 | Litton Systems Inc | FERRO LIQUID BEARING |
| US5137286A (en) * | 1991-08-23 | 1992-08-11 | General Electric Company | Permanent magnet floating shaft seal |
| EP1835207A1 (en) * | 2006-03-14 | 2007-09-19 | Voith Patent GmbH | Shaft sealing |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2718946A (en) * | 1951-08-18 | 1955-09-27 | Eaton Mfg Co | Magnetic drive structure |
-
1957
- 1957-07-09 DE DEN13866A patent/DE1052192B/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2718946A (en) * | 1951-08-18 | 1955-09-27 | Eaton Mfg Co | Magnetic drive structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028454A1 (en) * | 1979-07-30 | 1981-02-19 | Litton Systems Inc | FERRO LIQUID BEARING |
| US5137286A (en) * | 1991-08-23 | 1992-08-11 | General Electric Company | Permanent magnet floating shaft seal |
| EP1835207A1 (en) * | 2006-03-14 | 2007-09-19 | Voith Patent GmbH | Shaft sealing |
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