| 摘要 |
PROBLEM TO BE SOLVED: To provide a tornado type dirt collection device which effectively separates dirt from a coolant and prevents clogging caused by the dirt.SOLUTION: A dirty tank 4 has an inclined bottom part 7 formed so as to have a circular cross section and having a diameter that becomes smaller toward the lower side so that the inclined bottom part 7 is formed into a cone-shape. A dirty passage 8 for taking out a dirty coolant is connected to a lower end of the dirty tank 4. A vortex pump 12 which suctions a coolant from the dirty tank 4 so as to generate vortex flow in the dirty tank 4 is connected to the dirty passage 8.SELECTED DRAWING: Figure 1 |
