Automatic clearance compensation type efficient sealing device

Abstract

The invention discloses an automatic clearance compensation type efficient sealing device. The device comprises a bearing seat, wherein bearing end covers are fixed at the two ends of the bearing seat, a bearing is mounted in the bearing seat, the middle of a rotary shaft is fixed on the inner wall of the bearing, the two ends of the rotary shaft are inserted into the bearing end covers, an oil drip pan is fixed on the end face of the side, close to the bearing, of each bearing end cover, the rotary shaft is inserted into the oil drip pans, a cavity is formed in the middle of each bearing end cover, round through holes are formed in the two ends of each bearing end cover, an inner groove is formed in the inner lateral wall of each round through hole, a sealing ring and a plurality of springs are inserted into each inner groove, one end of each spring acts on the bottom surface of the corresponding inner groove, and the other end of each spring acts on the outer lateral wall of the corresponding sealing ring. According to the automatic clearance compensation type efficient sealing device, sealing is achieved through the sealing rings composed of a plurality of arc blocks, stretching and retracting of the sealing rings are adjusted through the springs so that the sealing rings can be always attached to the rotary shaft during operation, seamless sealing is achieved, and the sealing effect is improved.

Description

Technical field: [0001] The invention relates to the technical field of bearings, in particular to an efficient sealing device for automatic clearance compensation. Background technique: [0002] For some high-speed motors, in order to ensure the safe operation of the bearings and the amount of lubricating oil, there is often a large oil inlet oil pressure and oil volume, which directly increases the pressure in the oil chamber (the central cavity of the bearing housing). In addition, part of the large amount of oil will splash out directly under the action of pressure, and part of it will enter the lubricating area and then leak out with a large amount of heat on both sides of the bearing bush. Under the action of high temperature, this part of the lubricating oil will be atomized. This further increases the pressure of the internal oil chamber and strengthens the airflow flowing outward to the bearing. This part of the airflow hits the originally splashed liquid lubricatin...

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Problems solved by technology

[0003] In this regard, traditional seals often adopt traditional sealing structures such as labyrinth seals or felts. Since the rotor (rotating shaft) will produce axial center drift during operation, the beating is also relatively large, and there are gaps during operation, or it is non-contact. labyrinth seal with gaps

At the same time, as traditional seals such as felts gradually wear out during operation, the gap will gradually increase, but there is no compensation amount, which makes the oil mist and oil droplets overflow to the outside of the oil barrier.

The oil leakage of the oil shield seriously affects the surrounding environment and the safe operation of other parts, and brings great hidden dangers to safe and civilized production. Especially in the working condition of high-speed oil intake and large amount of oil, bearing sealing is currently a technical problem that needs to be solved.

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