| 摘要 |
PURPOSE:To maintain the constantly smooth movement of a vane while low by separating muddy water from the slurry discharged from a pump, and performing sealing and lubrication between each guide groove and a vane with this muddy water. CONSTITUTION:A rotary discharge-feed pump lubricating device is provided with a separating means 30 for separating muddy water from slurry discharged from the discharge port 21c of a vane type rotary discharge-feed pump 20. A rotor 22 is provided with a pressure chamber 22c, and this pressure chamber 22c is connected to the inner end of each guide groove 22a. The muddy water separated by the separating means 30 is fed to the pressure chamber 22c. When the rotor 22 is rotated, the volume of an operating chamber C is expanded- contracted, and in association with this, slurry and the like are sucked from a suction port 21b and discharged to the discharge port 21c. The slurry and the like are thereby prevented from flowing into the guide groove 22a from the operating chamber C, and lubrication between the guide groove 22a and the vane 23 is performed.
|
