Sealing device of engine rotating shaft

Abstract

The invention relates to a sealing device of an engine rotating shaft, belonging to the technical field of power devices. The front end of a bearing seat is provided with a front end seal ring, a front end retainer ring and a front end bearing, the rear end of the bearing seat is provided with a rear end retainer ring and a rear end bearing, and a rotating shaft is provided with a retainer ring used for positioning the front end bearing. The sealing device is characterized in that the rear end of the bearing seat is also provided with a rear end seal ring, a bearing pressing block and a fastening bolt, wherein the bearing pressing block is fastened to the rotating shaft by the fastening bolt. In the invention, the seal rings are respectively arranged at the front and rear ends of the rotating shaft, so that the front and rear ends of the rotating shaft are all sealed by the seal rings, the seal ring at the front end is contacted with the rotating shaft and the bearing seat, the seal ring at the rear end is contacted with the bearing seat and the bearing pressing block, the bearing pressing block is positioned on the rotating shaft by a positioning detent, the bearing pressing block can be assembled and disassembled at will, the bearing pressing block can be assembled and disassembled at will without damaging the front and rear seal rings and the bearing seat when the front and rear bearings are replaced, thus assembling and disassembling are convenient and reliable, and meanwhile the cost is reduced.

Description

technical field [0001] The invention relates to a sealing device for a rotating shaft of an engine. Specifically, front and rear sealing rings are installed at the front and rear ends of a bearing seat, so that both the front and rear ends of the rotating shaft are sealed by sealing rings. Shaft contact, the rear end sealing ring is in contact with the bearing seat and the bearing block, and the bearing block can be assembled and disassembled at will without damaging the front and rear sealing rings and the bearing seat, which belongs to the technical field of power devices. Background technique [0002] In the sealing device of the general engine rotating shaft, the front end of the bearing housing is equipped with a sealing ring, retaining ring and bearing, the rear end of the bearing housing is equipped with a retaining ring and bearing, and the rear end is also equipped with a bearing pressure plate, bolts and a rear cover. The rotating shaft is also equipped with a reta...

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Problems solved by technology

[0002] In the sealing device of the general engine rotating shaft, the front end of the bearing housing is equipped with a sealing ring, retaining ring and bearing, the rear end of the bearing housing is equipped with a retaining ring and bearing, and the rear end is also equipped with a bearing pressure plate, bolts and a rear cover. The rotating shaft is also equipped with a retaining ring for positioning the front bearing. The front end of the rotating shaft is sealed by a sealing ring, and the rear end is sealed by a back cover. Because the back cover and the bearing seat are interference fit, it is inconvenient to disassemble and easy to damage when replacing the bearing. The bearing seat and the rear cover cause waste and increase the cost of the engine

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