| 摘要 |
PROBLEM TO BE SOLVED: To dynamically control the viscosity and flow rate of re-circulated fluid by providing a fluid discharge system for controlling the viscosity of a passing fluid in response to a flow meter signal of a flow meter disposed in the interior and a fluid pressure signal at an inlet of a capillary viscometer disposed at an outlet. SOLUTION: A closed fluid discharge system 78 supplies a fixed target flow of a fluid with a target viscosity, scrapes off the same from a bearing surface 32 by a scraper 44 and returns the same to a mixing and proportioning chamber 80. The re-proportioned fluid is taken out from the mixing and proportioning chamber 80 by a discharge pump 82 to be discharged through a flow meter 84. The flow meter 84 and a driving device of a pump 82 are connected to a computer 86. The fluid is passed from the flow meter 84 throught a nozzle 32 to be discharged on the bearing surface 32. Further, the nozzle 32 is a capillary rheometer or a capillary viscosimeter, and provided with a pressure sensor 96 for detecting the line pressure at an inlet to the capillary and sending a detection signal to the computer 86. |
