Sealing device and bearing box system

Abstract

The invention provides a sealing device and a bearing box system. The device is installed in a bearing cavity which is provided with a shaft, a bearing and a shaft sleeve, wherein the bearing and theshaft sleeve are arranged outside the shaft in a sleeving mode, the shaft sleeve abuts against the end surface of the bearing, and the shaft sleeve is made of a magnetic material; the sealing device comprises a first magnetic conductor, a permanent magnet and a second magnetic conductor; the first magnetic conductor, the permanent magnet and the second magnetic conductor are arranged outside the shaft sleeve in a sleeving mode, the first magnetic conductor abuts against the end surface, the permanent magnet is clamped between the first magnetic conductor and the second magnetic conductor, andthe permanent magnet, the first magnetic conductor, the shaft sleeve and the second magnetic conductor are matched to form a closed magnetic line; and gaps are formed between the outer wall of the shaft sleeve and the inner wall of the first magnetic conductor and between the outer wall of the shaft sleeve and the inner wall of the second magnetic conductor, and pole teeth are arranged on the inner wall of the first magnetic conductor and the inner wall of the second magnetic conductor, and the gaps and the pole teeth are all filled with magnetic fluid. The embodiment of the sealing device caneffectively ensure the sealing effect on the bearing cavity, thereby avoiding environmental pollution and harm to human health.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of sealing, and in particular to a sealing device and a bearing box system. Background technique [0002] In the technical field of construction machinery, the use of devices with bearing housings, which usually have bearing chambers, is becoming more and more common. At present, the inside of the bearing cavity is generally sealed by a common mechanical seal method, but the sealing effect of this sealing method is poor, and leakage is likely to occur, which will pollute the environment and endanger human health. Contents of the invention [0003] Embodiments of the present invention provide a sealing device and a bearing box system to solve the problem of poor sealing effect of the sealing method of the bearing cavity in the prior art. [0004] On the one hand, the embodiment of the present invention provides a sealing device installed in a bearing cavity having a shaft, a beari...

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Problems solved by technology

[0003] The embodiment of the present invention provides a sealing device and a bearing box system to solve the problem of poor sealing effect of the sealing method of the bearing cavity in the prior art

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