OIL-FREE SCREW COMPRESSOR

Provided is an oil-free screw compressor with good assemblability of a shaft seal device reduces leakage of a compressed gas. An oil-free screw compressor (1) accommodates male and female screw rotors (16) in a rotor chamber (15) of a casing (12), supports each screw rotor by a bearing (22) through...

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Bibliographische Detailangaben
Hauptverfasser:	YANO, Yoshio, MIYATAKE, Toshiyuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CYLINDERS ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PISTONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS SEALINGS STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Provided is an oil-free screw compressor with good assemblability of a shaft seal device reduces leakage of a compressed gas. An oil-free screw compressor (1) accommodates male and female screw rotors (16) in a rotor chamber (15) of a casing (12), supports each screw rotor by a bearing (22) through a rotor shaft (21), and has shaft seal devices (30, 40) in a shaft seal space (10). The shaft seal devices include an oil seal (31) on the side of the bearing, a packing case (41) on the side of the rotor chamber, and a gas seal (42). An end (44) of the packing case on the side of the bearing and an end (33) of the oil seal on the side of the rotor chamber are fitted and fixed by interference fit to form a gas seal accommodation space (48), the gas seal accommodation space accommodating the seal ring.