| 摘要 |
PURPOSE:To improve seal efficiency through a grease seal, by using the upper line of a dam to gradually control a flow of grease supplied to a grease reservoir in the bottom of a grease separator chamber. CONSTITUTION:Grease G accumulated to a grease reservoir 14 softens its surface part by a temperature rise of a casing 2 due to rotation of Roots rotors 10, 10' and temperature of compressed gas sucked from a suction port 3 and discharged via a grease separator chamber 5 from a delivery opening 4 to a delivery port 8, and the grease flows little by little into the casing 2 from the upper edge of a dam 12 and outflow ports 13. Accordingly, seal efficiency by a grease seal is improved. |
