초록 ▼

A sealing arrangement on a rotor shaft peg of a dry-running rotation screw compressor for establishing a seal between the rotor (1) and the oil-lubricating bearing (7) of the shaft peg (3) has a labyrinth slit seal (11), located closer to the rotor, and a lip seal ring (13), located closer to the be

A sealing arrangement on a rotor shaft peg of a dry-running rotation screw compressor for establishing a seal between the rotor (1) and the oil-lubricating bearing (7) of the shaft peg (3) has a labyrinth slit seal (11), located closer to the rotor, and a lip seal ring (13), located closer to the bearing, and in between an annular space (27) with ventilation opening (29) towards the bottom. The shaft peg bears a bearing race (25) made of a hardened material, which acts in cooperation with the lip sealing ring (13), and which can also extend above the area of the labyrinth slit seal (11).

대표청구항 ▼

[ What is claimed is:] [1.]1. A rotary screw compressor having a rotor and at least one rotor shaft peg supported by an oil-lubricated bearing, the compressor further including a sealing arrangement along the rotor shaft peg for establishing a seal between the rotor and the oil-lubricated bearing, t

[ What is claimed is:] [1.]1. A rotary screw compressor having a rotor and at least one rotor shaft peg supported by an oil-lubricated bearing, the compressor further including a sealing arrangement along the rotor shaft peg for establishing a seal between the rotor and the oil-lubricated bearing, the sealing arrangement comprising a housing ring surrounding the shaft peg, in the portion of the housing ring located closer to the rotor, the housing ring including a labyrinth gap seal, which surrounds the shaft peg; in the portion of the housing ring located closer to the oil-lubricated bearing, the housing ring bears a lip seal ring, and in between the lip seal ring and the labyrinth seal, the housing ring defines a ring space with ventilation opening towards the atmosphere, and in that the shaft peg presents a cylindrical circumferential surface, opposite the labyrinth gap seal (11), the sealing arrangement further including a bearing race made of hardened material, which is attached to a shaft peg and works in cooperation with the lip seal ring.