Dustproof sealing device of magnetic liquid and for wind sensor

Abstract

The invention discloses a dustproof sealing device of magnetic liquid and for a wind sensor. The dustproof sealing device of the magnetic liquid and for the wind sensor comprises a magnetic fluid sealing structure which is formed by a central shaft (1), an annular right pole piece (2), an annular permanent magnet (3) and an annular left pole piece (4). The magnetic fluid (5) is injected into a gap which is formed by the central shaft (1) and the annular right pole piece (2) and a gap which is formed by the central shaft (1) and the annular left pole piece (4); the magnetic fluid (5) is absorbed in the gap which is formed by the central shaft (1) and the annular right pole piece (2) and the gap which is formed by the central shaft (1) and the annular left pole piece (4) due to magnetic fields which are generated by the annular permanent magnet (3); external impurities are prevented from entering into a gap between the central shaft (1) and a central shaft sleeve (6); and the purposes of dustproof and sealing are achieved. The dustproof sealing device of the magnetic liquid and for the wind sensor solves the dustproof problem of the gap between the central shaft and the central sleeve of the wind sensor.

Description

technical field [0001] The invention relates to a magnetic liquid dust-proof sealing device for a wind sensor, which belongs to the field of mechanical engineering sealing. Background technique [0002] The wind sensor is installed in the air duct of the blower. When the blower is working normally, it can cool a certain military radar, so that the radar can operate normally. The wind sensor can judge the wind blown by the blower through the rotation angle of the wind flag, and then judge whether the blower is working normally. When dust and other impurities enter the gap between the central shaft of the wind sensor and the central shaft sleeve, it will hinder the free rotation of the central shaft, resulting in If the rotation angle of the wind flag is not judged accurately, it is impossible to judge whether the blower is working normally. Therefore, the dust sealing of the wind sensor is very important. The magnetic liquid seal is a new type of sealing method. Its main fe...

AI Technical Summary

Problems solved by technology

The wind sensor can judge the wind blown by the blower through the rotation angle of the wind flag, and then judge whether the blower is working normally. When dust and other impurities enter the gap between the central shaft of the wind sensor and the central shaft sleeve, it will hinder the free rotation of the central shaft, resulting in If the rotation angle of the wind flag is not judged accurately, it is impossible to judge whether the blower is working normally

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