A differential oil seal

Abstract

The present invention discloses a differential oil seal, comprising a coaxially arranged inner oil seal, a connecting frame and an outer oil seal, wherein the inner oil seal is arranged in a hole of the connecting frame, the outer circle of the inner oil seal is fitted to the inner wall of the connecting frame, and the outer edges of both sides of the connecting frame are provided with radially extending retaining edges for limiting the axial movement of the inner oil seal; the outer oil seal is arranged on the outer circumference of the connecting frame, and a clamping groove for limiting the axial movement of the outer oil seal is provided on the outer circumference of the connecting frame, and the lip of the outer oil seal is embedded in the clamping groove. The present invention adopts an inner and outer oil seal combined with a connecting frame, and through the rotation of the inner oil seal and the connecting frame, the relative rotation speed of the inner oil seal and the shaft is reduced, and the problem of premature aging of the oil seal of the high-speed rotating component due to excessive heat generated by the high-speed rotation of the component is solved, and the present invention is easy to install and use, and has low cost.

Description

Technical Field

[0001] The invention relates to a sealing component, in particular to a differential oil seal. Background Art

[0002] At present, there are many sealing forms for gearboxes with high-speed rotating gears. The better ones often use labyrinth oil seals, mechanical seals or rubber seals, but they often leak liquid and the sealing effect is not good, so special oil seals are needed to prevent leakage of lubricating oil. Summary of the invention

[0003] The purpose of the present invention is to provide a differential oil seal which can prevent lubricating oil leakage, delay the aging of the sealing ring, and has better sealing effect and longer service life.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A differential oil seal comprises a coaxially arranged inner oil seal, a connecting frame and an outer oil seal, wherein the inner oil seal is arranged in a hole of the connecting frame, the outer circle of the inner oil seal is fitted to the inner wall of the connecting frame, and the outer edges of both sides of the connecting frame are provided with radially extending retaining edges for limiting the axial movement of the inner oil seal; the outer oil seal is arranged on the outer circumference of the connecting frame, and the outer circumference of the connecting frame is provided with a groove for limiting the axial movement of the outer oil seal, and the lip of the outer oil seal is embedded in the groove.

[0006] A further improvement of the present invention is that the connecting frame is made of bronze material.

[0007] A further improvement of the present invention is that the bronze material is tin bronze.

[0008] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is:

[0009] The present invention adopts an inner and outer oil seal and a connecting frame combination, and reduces the relative rotation speed of the inner oil seal and the shaft through the rotation of the inner oil seal and the connecting frame, thereby solving the problem of premature aging of the oil seal of the high-speed rotating component due to excessive heat generated by the high-speed rotation of the component. In addition, the present invention is easy to install and use, and has low cost.

[0010] The connecting frame is made of bronze material with good wear resistance and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention.

[0012] Among them: 1. inner oil seal 2. connecting frame 3. outer oil seal 4. clamping groove 5. retaining edge.

[0013] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0014] A differential oil seal, such as Figure 1 As shown, it includes a coaxially arranged inner oil seal 1, a connecting frame 2 and an outer oil seal 3, the inner oil seal 1 is arranged in the hole of the connecting frame 2, the outer circle of the inner oil seal 1 is fitted to the inner wall of the connecting frame 2, and the outer edges of both sides of the connecting frame 2 are provided with radially extending retaining edges 5, and the retaining edges 5 are used to limit the axial movement of the inner oil seal 1; the outer oil seal 3 is arranged on the outer circumference of the connecting frame 2, and the outer circumference of the connecting frame 2 is provided with a groove 4, the lip of the outer oil seal 3 is embedded in the groove 4, and the groove 4 is used to limit the axial movement of the outer oil seal 3.

[0015] The connecting frame 2 is made of bronze material, and tin bronze is selected in this embodiment.

Claims

1. A differential oil seal for sealing a gearbox of a high-speed rotating gear, characterized in that: The invention comprises an inner oil seal (1), a connecting frame (2) and an outer oil seal (3) which are coaxially arranged. The inner oil seal (1) is arranged in a hole of the connecting frame (2). The outer circle of the inner oil seal (1) is fitted to the inner wall of the connecting frame (2). The outer edges of both sides of the connecting frame (2) are provided with radially extending retaining edges (5) for limiting the axial movement of the inner oil seal (1). The outer oil seal (3) is arranged on the outer circumference of the connecting frame (2). The outer circumference of the connecting frame (2) is provided with a retaining groove (4) for limiting the axial movement of the outer oil seal (3). The plurality of lips of the outer oil seal (3) are embedded in the plurality of retaining grooves (4). The inner and outer oil seals are combined with the connecting frame (2). The relative rotation speed of the inner oil seal (1) and the shaft is reduced by rotating the inner oil seal (1) and the connecting frame (2).

2. A differential oil seal according to claim 1, characterized in that: The connecting frame (2) is made of bronze material.

3. A differential oil seal according to claim 2, characterized in that: The bronze material is tin bronze.

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