Framework oil seal
A skeleton oil seal and skeleton technology, applied in the direction of engine seal, engine components, mechanical equipment, etc., can solve the problems of poor heat dissipation, oil viscosity drop, easy leakage, etc., and achieve good sealing effect
Inactive Publication Date: 2020-03-17
朱良学
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Problems solved by technology
[0004] The sealing effect of the traditional skeleton oil seal is not easy to guarantee, and the heat dissipation effect is poor. Therefore, its service life is short, and it needs to be replaced frequently, which affects the operating efficiency of the equipment. In addition, the oil pump will heat up after a period of operation, causing the viscosity of the oil to drop, making it easier to leak
Method used
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Embodiment Construction
[0010] The present invention will be further described below with reference to the accompanying drawings.
[0011] like figure 1 As shown, the skeleton oil seal of the present invention includes a skeleton 1, the main body of the skeleton 1 is annular, and a retaining ring A2 and a retaining ring B3 are arranged on the inner wall of the main body of the skeleton 1. The sections of the retaining ring A2 and the retaining ring B3 are both hook-shaped, It has a certain elastic deformation ability and plays a role similar to a clamp. During installation, the rubber body can be firmly fixed on the pump shaft. The expansion coefficient of the retaining ring A2 is greater than the expansion coefficient of the retaining ring B3. After the oil pump runs and warms up , the expansion and deformation of the retaining ring A2 is greater than that of the retaining ring B3, and the protruding part produces elastic deformation to further press the pump shaft inward, providing compensation pre...
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The invention discloses framework oil seal. The oil seal comprises a framework, the main body of the framework is annular, and the inner wall of the main body of the framework is provided with a retainer ring A and a retainer ring B, wherein the sections of the retainer ring A and the retainer ring B are hook-shaped, and the expansion coefficient of the retainer ring A is greater than that of theretainer ring B. According to the oil seal, the retainer ring A and the retainer ring B are arranged on the inner wall of the main body of the framework, the expansion coefficients of the retainer ring A and the retainer ring B are different, the sections of the retainer ring A and the retainer ring B are hook-shaped, and the retainer ring A and the retainer ring B have certain elastic deformationcapability in the radial direction and act like clamps so that a rubber body can be firmly fixed on a pump shaft during installation; and after an oil pump runs and heats up, the expansion deformation amount of the retainer ring A is greater than that of the retainer ring B, and the convex portion generates elastic deformation to further press the pump shaft inwards, so that the compensation pressure after temperature rise is provided, and the sealing effect is better.
Description
technical field [0001] The invention relates to a skeleton oil seal. Background technique [0002] The oil seal is the seal of the rotating shaft of the mechanism, and its function is to prevent the liquid from leaking out along the rotating shaft and prevent external debris from invading the inside of the body. As the sealing device of the rotating shaft, in addition to the oil seal, there are also mechanical seals and soft packing seals. However, among these sealing devices, the oil seal has simple structure, easy installation, low cost and wide application. Oil seals are mostly used for rotary shaft seals such as oil pumps and reducers. [0003] The skeleton oil seal is a typical representative of the oil seal. Generally speaking, the oil seal refers to the skeleton oil seal. The function of the oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the external environment, so as not to let the lubricating oil leak. The s...
Claims
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IPC IPC(8): F16J15/3232F16J15/3252
CPCF16J15/3232F16J15/3252
Inventor 朱良学
Owner 朱良学