| 摘要 |
PURPOSE:To improve hygienic conditions by providing freely forward and backward revolvable pumps which agitate scum and settled sudge and transfer the same to the outside of tanks in plural discharge tanks. CONSTITUTION:A pump 11 is formed by providing a drum-like casing 13 of a low height with its body and a forward and backward revolvable impeller 14 in said casing 13. Two openings 15, 16 for both suction and discharge are provided so as to form an L-shaped flow passage. A trumpet-shaped member 17 is opened in the opening 15 toward the base of a water tank 12, and an adapter 18 is directly coupled without joint to the opening 16. Check valves 19, 20 are connected to the branched parts of the adapter 18. A discharge pipe 21 is connected perpendicularly to the discharge side of the valve 19 and a trumpet- shaped member 22 is opened diagonally downward and is connected to the suction side of the valve 20. |
