摘要:
INWARDLY ALONG THE PIPE, BOTH RINGS ARE COMPRESSED AND LOCKED TOGETHER BY COACTING TEETH THUS IMPARTING STIFFNESS TO THE JOINT AND PRECLUDING AXIAL DISPLACEMENT OF THE RINGS OUTWARDLY. AN ARRANGEMENT FOR IMPARTING STABILITY AND RIGIDITY TO A PIPE JOINT INCLUDING A PAIR OF PIPES HAVING THEIR ADJACENT ENDS PLACED IN CONCENTRIC RELATIONSHIP AND WITH AN ANNULAR SPACE THEREBETWEEN. A SEAL RING IS LOCATED IN THE SPACE FOR PRECLUDING ESCAPE OF FLUID CARRIED IN THE PIPES. TO IMPART STIFFNESS TO THE JOINT, A PAIR OF TAPERED INNER AND OUTER RINGS ARE PLACED IN INTERLOCKING ENGAGEMENT IN THE SPACE AND ARE ARRANGED TO BE AXIALLY DISPLACEABLE IN A TIGHTENING DIRECTION. AS THE INNER RING IS FORCED
摘要:
SEAL BETWEEN TWO CHAMBERS IN WHICH TWO DIFFERENT PRESSURES PREVAIL AND WHICH IS SEPARATED BY WALL THROUGH WHICH A SHAFT PASSES, COMPRISING A BODY RING OF RUBBER WHICH IS STRETCHED AROUND THE SHAFT, THEREBY FIXING IN RIGHT POSITION AN INTEGRAL ANNULAR LIP WHICH PRESSES AXIALLY ALONG AN ANNULAR SEALING SURFACE AGANIST THE SIDE OF THE WALL WHERE THE PREVAILING PRESSURE IS HIGHEST BY MEANS OF THE INHERENT TENSION OF THE LIP AND DUE TO THE INFLUENCE OF THE AMBIENT PRESSURE CHARACTERIZED THEREBY THAT THE FREE SURFACE OF LIP FACING THE WALL IS LITTLE COMPARED WITH THE RADIAL THICKNESS OF THE BODY RING.
摘要:
A seal for two relatively rotatable parts of the type wherein a rotary shaft projects through a bearing housing wall that is disposed transversely to the shaft comprising an annular sealing member consisting of a resilient ring having a tubular body portion and an integral annular thin flexible lip projecting from one end thereof. The annular lip is defined at its inner end adjacent the body portion by an annular separation and has an outer wall constituted by an inwardly directed surface of revolution having a base angle of between 30* and 60* facing and normally bearing against the housing wall around the opening to seal the same. The ring body when unstretched has a smaller inner diameter than the outer diameter of the shaft and the body portion has a mass at least twice the mass of the lip to provide in combination with the smaller inner diameter the sole means for fixedly securing the ring against axial and rotational displacement on the shaft in position to cause the flexible lip to bear against the housing wall and seal the opening. The outer axial end face of the lip is provided with a spiral groove which produces a pumping effect upon rotation urging the lubricant radially outwardly toward the area of engagement of the lip and the wall of the bearing housing.
摘要:
A sealing between a rotary and a stationary member comprises two substantially axially engaging slide rings, one of which is connected to the rotary member while the other is connected to the stationary member. The slide ring connected to the rotary member is provided with at least one passage interconnecting the spaces located on either side of the slide ring.
摘要:
An arrangement for the mounting and axial fixation of shaft seals of the type consisting of a rubber ring stretched around the shaft and providing a point of fastening for an integrating funnel-shaped sealing lip, which seals axially against a sealing surface that is essentially perpendicular to the longitudinal direction of the shaft, characterized by the fact that a support securely fastened at points in connection with the sealing surface and against which a ring-shaped support surface effected on the rubber ring then slides when the shaft turns, whereby the support is so positioned with respect to the sealing surface that the sealing lip assumes a correct axial position with respect to the sealing surface after one revolution.
摘要:
A SEAL FOR RELATIVELY ROTATABLE MEMBERS SUCH AS A SHAFT MEMBER AND A WALL MEMBER HAVING A SEALING SURFACE DISPOSED GENERALLY TRANSVERSELY TO THE AXIS OF THE SHAFT MEMBER, COMPRISING AN ANNULAR BODY PORTION ADAPTED TO BE MOUNTED ON THE SHAFT MEMBER, A FLEXIBLE LIP PROJECTING ANGULARLY FROM SAID BODY PORTION AND HAVING AT LEAST ONE CIRCUMFERENTIAL RIB PROJECTING FROM THE LIP ENGAGING THE SEALING SURFACE OF THE WALL MEMBER AND A PLURALITY OF FIN-SHAPED ELEMENT PROJECTING RADIALLY FROM SAID RIB DISPOSED GENERALLY PARALLEL TO THE SEALING SURFACE, SAID FINSHAPED ELEMENTS ADAPTED TO PRESS WITH A LIGHT PRESSURE AGAINST THE SEALING SURFACE WITH FREELY SUSPENDED SIDE EDGES AND WHICH, DUE TO FRICTION UPON RELATIVE ROTATION OF THE MEMBERS, DEFLECT REARWARDLY IN RELATION TO THE DIRECTION OF MOVEMENT OF THE SEALING RIB AND SEALING SURFACE THERE PROVIDING A PUMPING EFFECT DIRECTED RADIALLY FROM THE SEALING RIB.
摘要:
A method of making an annular seal from a generally cylindrical tubular member of an elastomeric material consisting of the steps of forming a recess defined by an inwardly directed surface of revolution at one axial end of the tubular member and providing a deep annular separation in the tubular member adjacent said one axial end which extends from the outer peripheral surface of the tubular member inwardly to and terminating at a point adjacent to but short of the inner peripheral surface to provide a thin flexible sealing lip at one axial end between the annular separation and the surface of revolution whereby the mass of the body portion is at least twice the mass of the flexible sealing lip.
摘要:
A seal for at least a pair of relatively rotatable members for preventing lubricant from leaking from a lubricant chamber to the space outside the lubricant chamber comprising a first seal element having a sealing portion mounted on the rotatable member and adapted to bear against a contact surface on the other member to form a primary seal area supporting the lubricant chamber from the space outside the lubricant chamber characterized by the first seal element mounted on the rotatable member having a bore therein forming a duct connecting the lubricant chamber with the space outside the lubricant chamber, said bore being located radially to one side of the primary seal area so that lubricant bypassing the primary seal area will be discharged through the bore to the lubricant chamber under the influence of centrifugal force.