| 摘要 |
PURPOSE:To eliminate the overheat trouble of a bearing part, by providing a spiral groove to the inner surface of the rotor bearing of an oval flow meter. CONSTITUTION:Bush shaped bearings 5 each having a spiral groove 7 provided to the inner surface thereof are inserted into the central hole of a rotor 6 from both side surfaces thereof and pressed down by thrust rings 4 while a shaft 3 is passed through said bearings 5. By this structure, a vinyl chloride monomer reaches the bearing part from the gaps between the thrust rings 4 and the shaft 3, and flowed to the bearing parts through the grooves 7 with the rotation of a rotor 6 to wet said bearing parts and the lubrication and cooling of the bearings can be performed. |
