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CN-224229243-U - High temperature resistant polyurethane multiple oil seal

CN224229243UCN 224229243 UCN224229243 UCN 224229243UCN-224229243-U

Abstract

The utility model discloses a high-temperature-resistant polyurethane multiple oil seal piece, which comprises a shaft and an outer ring inlaid with an inner ring, wherein the outer ring is provided with an opening which is circumferentially arranged and used for exposing the outer side wall of the inner ring, the inner side wall of the inner ring is fixedly provided with a plurality of raised strips which are vertically arranged on the shaft, and the raised strips are matched with the inner side wall of the outer ring. According to the high-temperature-resistant polyurethane multiple oil seal, the plurality of raised strips absorb engine oil heat and then transfer the engine oil heat to the inner ring, then part of metal sheets are exposed to dissipate the heat to the outer ring, then the annular gap of the outer ring is used for absorbing and transferring the heat emitted by the metal sheets on the inner ring, finally the metal contact heat transfer is carried out on the engine body and the external air close to the engine body, so that the heat dissipation efficiency is improved, the oil seal has a better heat dissipation effect under the addition of materials, and the high-temperature-resistant durable effect of the oil seal is further improved.

Inventors

  • HE YI

Assignees

  • 南京厚孚机械科技有限公司

Dates

Publication Date
20260512
Application Date
20250516

Claims (10)

  1. 1. The high-temperature-resistant polyurethane multiple oil sealing piece comprises a shaft (1) and is characterized by further comprising an outer ring (2) inlaid with an inner ring (3), wherein the outer ring (2) is provided with an opening (25) which is circumferentially arranged and used for exposing the outer side wall of the inner ring (3); The inner side wall of the inner ring (3) is fixedly provided with a plurality of raised strips (33) which are vertically arranged on the shaft (1), and the raised strips (33) are matched with the inner side wall of the outer ring (2).
  2. 2. A high temperature resistant polyurethane multiple oil seal according to claim 1, wherein the outer ring (2) is provided with symmetrically arranged outer lips (21).
  3. 3. A high temperature resistant polyurethane multiple oil seal according to claim 2, wherein the outer lip (21) is provided with equidistant ring grooves (22).
  4. 4. A high temperature resistant polyurethane multiple oil seal according to claim 2, characterized in that the outer ring (2) is provided with an inner lip (23) which abuts against the shaft (1) and is arranged opposite to the outer lip (21).
  5. 5. The high temperature resistant polyurethane multiple oil seal according to claim 4, wherein the inner side wall of the outer ring (2) is fixedly provided with a pleat (24) positioned outside the raised line (33), and the pleat (24) is abutted against the side wall of the shaft (1).
  6. 6. A high temperature resistant polyurethane multiple oil seal according to claim 5, wherein said pleat (24) cooperates with an inner lip (23) to form a chamber for containing engine oil.
  7. 7. A high temperature resistant polyurethane multiple oil seal according to claim 5, characterized in that the inner ring (3) port is provided with a circumferentially arranged outer shell (31), the outer shell (31) being embedded in the inner lip (23).
  8. 8. The high temperature resistant polyurethane multiple oil seal according to claim 7, wherein a shell edge (32) is fixedly installed at the end of the shell (31).
  9. 9. A high temperature resistant polyurethane multiple oil seal according to claim 7, wherein said pleat (24) is embodied as an arcuate rubber projection.
  10. 10. A high temperature resistant polyurethane multiple oil seal according to claim 8, wherein the shell rim (32) is embodied as a resilient metal sheet.

Description

High temperature resistant polyurethane multiple oil seal Technical Field The utility model relates to the technical field of sealing elements, in particular to a high-temperature-resistant polyurethane multiple oil sealing element. Background The oil seal is a treatment part for preventing engine oil leakage, which is used for coping with the part of the shaft extending out of the engine body, and the elastic lip on the oil seal is used for connecting the side wall of the shaft, so that the original transmission effect is maintained, and the engine oil is prevented from flowing out. According to publication number CN207584024U, publication date 2018-07-06, a multi-lip framework oil seal is disclosed, which comprises an oil seal ring with an inner ring and an outer ring combined, a framework is arranged at the inner and outer positions, and a plurality of layers of lips are arranged on the outer ring. In the prior art including above-mentioned patent, owing to keep contact friction always between lip and the axle lateral wall on the oil blanket, and still there is a small amount of engine oil that is used for lubricated in the oil blanket, and along with the friction cycle is longer, the rising of temperature can necessarily be with heat transfer to engine oil in, and spread gradually on whole oil blanket, though the oil blanket adopts high temperature resistant stand wear and tear material, but long-term temperature influence also can cause the loss to the oil blanket of rubber material, and the axle that this kind of oil blanket was equipped usually needs to work for a long time, once the oil blanket is changed because of the loss is injured, the axle of stopping must cause the influence to the operation and the work efficiency of equipment, therefore need this kind of oil blanket can stand wear and tear more high temperature resistant. Disclosure of utility model The utility model aims to provide a high-temperature-resistant polyurethane multiple oil seal piece, which aims to solve the problems. In order to achieve the above object, the present utility model provides the following technical solutions: The high-temperature-resistant polyurethane multiple oil seal comprises a shaft and an outer ring inlaid with an inner ring, wherein the outer ring is provided with an opening which is circumferentially arranged and used for exposing the outer side wall of the inner ring; The inner ring inner side wall is fixedly provided with a plurality of raised strips which are vertically arranged on the shaft, and the raised strips are matched with the outer ring inner side wall. Preferably, the outer ring is provided with symmetrically arranged outer lips. Preferably, the outer lip is provided with equidistant ring grooves. Preferably, the outer ring is provided with an inner lip which abuts against the shaft and is arranged opposite to the outer lip. Preferably, the outer ring inner side wall is fixedly provided with a pleat protrusion arranged on the outer side of the convex strip, and the pleat protrusion is abutted against the shaft side wall. Preferably, the pleat cooperates with the inner lip to form a chamber for containing oil. Preferably, the inner ring port is provided with a circumferentially arranged outer shell, which is embedded in the inner lip. Preferably, the shell end is fixedly provided with a shell edge. Preferably, the pleat protrusions are specifically arc-shaped rubber protrusions. Preferably, the shell edge is specifically an elastic metal sheet. In the technical scheme, the high-temperature-resistant polyurethane multiple oil seal has the advantages that after engine oil heat is absorbed by the convex strips and then transferred to the inner ring, part of metal sheets are exposed to dissipate the heat to the outer ring, then the annular gap of the outer ring is utilized to absorb and transfer the heat emitted by the metal sheets on the inner ring, finally, metal contact heat transfer is carried out on the engine body and the external air close to the engine body, so that the heat dissipation efficiency is accelerated, the oil seal has better heat dissipation effect under material addition, and the high-temperature-resistant durable effect of the oil seal is further improved. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art. FIG. 1 is a schematic view of an assembly of a shaft and an oil seal provided by an embodiment of the present utility model; FIG. 2 is an exploded view of an outer ring and an inner ring according to an embodiment of the present utility model; FIG. 3 is a schematic side cross-sec