Sealing ring (1) for a centrifugal separator with an axially open annular groove (7) for the sealing ring in a first rotor part (2) and a relative to the first rotor part (2) axially movable second rotor part (3), against which the sealing ring (1) sealingly abuts. Both the sealing ring (1) and the
Sealing ring (1) for a centrifugal separator with an axially open annular groove (7) for the sealing ring in a first rotor part (2) and a relative to the first rotor part (2) axially movable second rotor part (3), against which the sealing ring (1) sealingly abuts. Both the sealing ring (1) and the groove (7) have a first annular portion (8 and 9, respectively) turned towards the second rotor part (3) and a second annular portion (14 and 11, respectively) turned away from the second rotor part (3). The second portion (11) of the groove has an outer annular recess (12) and an inner annular recess (16) whereas the second annular portion (14) of the sealing ring (1) has at least one projection (15), which is arranged to at least partly fill up the outer recess of the groove (7). The sealing ring (1) and the groove (7) are so shaped and adapted to one another that the sealing ring is kept in the groove locked by its shape and the tightening force is transferred from the sealing ring (1) to the first rotor part (2) by pressing the sealing ring (1) against the bottom (13) of the groove and so that the sealing ring (1) upon elastical deformation of the same and/or the first rotor part (2) can be brought into position in and be taken out of the groove.
대표청구항▼
Sealing ring (1) for a centrifugal separator with an axially open annular groove (7) for the sealing ring in a first rotor part (2) and a relative to the first rotor part (2) axially movable second rotor part (3), against which the sealing ring (1) sealingly abuts. Both the sealing ring (1) and the
Sealing ring (1) for a centrifugal separator with an axially open annular groove (7) for the sealing ring in a first rotor part (2) and a relative to the first rotor part (2) axially movable second rotor part (3), against which the sealing ring (1) sealingly abuts. Both the sealing ring (1) and the groove (7) have a first annular portion (8 and 9, respectively) turned towards the second rotor part (3) and a second annular portion (14 and 11, respectively) turned away from the second rotor part (3). The second portion (11) of the groove has an outer annular recess (12) and an inner annular recess (16) whereas the second annular portion (14) of the sealing ring (1) has at least one projection (15), which is arranged to at least partly fill up the outer recess of the groove (7). The sealing ring (1) and the groove (7) are so shaped and adapted to one another that the sealing ring is kept in the groove locked by its shape and the tightening force is transferred from the sealing ring (1) to the first rotor part (2) by pressing the sealing ring (1) against the bottom (13) of the groove and so that the sealing ring (1) upon elastical deformation of the same and/or the first rotor part (2) can be brought into position in and be taken out of the groove. s claimed in claim 1, wherein the non-woven elastomer of the sealing lip is bonded by a latex material. 4. The shaft sealing ring as claimed in claim 3, wherein the fleece material is a mechanically bonded nonwoven material. 5. The shaft sealing ring as claimed in claim 4, wherein the nonwoven contains polyester fibers. 6. A shaft sealing ring, comprising a rotary support body, two sealing lips mounted the support body and extending at least partly in radial outward direction from the support body forming free ends, and sealing surfaces offered by the free ends of the sealing lips engage a respective one of two stationary counter surfaces offered by the support body so as to accomplish sealing towards both sides; wherein the sealing lips are made of a fleece material which is permeable to the medium to be sealed off and permits passage of the medium to be sealed off from the sealed space to the sealing surfaces. 7. The shaft sealing ring as claimed in claim 6, wherein the two sealing lips and the countersurfaces are arranged in mutually inverse relationship. 8. The shaft sealing ring as claimed in claim 1, wherein the countersurface or each countersurface is inclined with respect to a plane normal to the longitudinal shaft axis. 9. The shaft sealing ring as claimed in claim 8, wherein the angle of inclination alpha between the vertical plane and the or each countersurface lies between 10° and 60°. 10. The shaft sealing ring as claimed in claim 1, comprising a counterpart fixed to a casing and provided with the countersurface or countersurfaces. 11. The shaft sealing ring as claimed in claim 10, wherein the counterpart is made of a material which is a good heat conductor. 12. The shaft sealing ring as claimed in claim 1, wherein a cover disc is mounted on the support body at the side of the sealed space. 13. The shaft sealing ring as claimed in claim 12, wherein a gap is provided between the cover disc and the counterpart which is fixed to the casing. 14. The shaft sealing ring as claimed in claim 6, wherein the support body is connected to the shaft and the sealing lips are flexurally supported by the support body. 15. The shaft sealing ring as claimed in claim 6, wherein the fleece material is a non-woven elastomer which is compatible with the medium to be sealed off. 16. The shaft sealing ring as claimed in claim 6, wherein the fleece material is a mechanically bonded nonwoven material. 17. The shaft sealing ring as claimed in claim 16, wherein the fleece material is a needled nonwoven material. 18. The shaft sealing ring as claimed in claim 16, wherein the nonwoven elastomer is bonded by a latex material. 19. The shaft sealing ring as claimed in claim 6, wherein each countersurface is inclined with respect to a plane normal to the longitudinal shaft axis. 20. The shaft sealing ring as claimed in claim 19, wherein the angle of inclination alpha between the vertical plane and each countersurface lies between 10° and 60°. 21. The shaft sealing rings as claimed in claim 20, wherein the angle of inclination alpha is approximately 20°. 22. The shaft sealing ring as claimed in claim 6, comprising a counterpart fixed to a casing and provided with countersurfaces. 23. The shaft sealing rings as claimed in claim 22, wherein the counterpart is made of a material which is a good heat conductor. 24. The shaft sealing ring as claimed in claim 6, wherein a cover disc is mounted on the support body at the side of the sealed space. 25. The shaft sealing ring as claimed in claim 24, wherein a gap is provided between the cover disc and the counterpart which is fixed to the casing.
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이 특허에 인용된 특허 (6)
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