| 摘要 |
PURPOSE:To obtain a device having high solid-liquid separating efficiency by providing a liquid intake valve having a float on the liquid surface of a separating tank, constructing a settling section to have a bottom of the sectional shape like a ship bottom, and communicating an eddy current pipe provided with a slit to the bottom of the separating tank. CONSTITUTION:A liquid intake valve 5 is suspended near the liquid surface in a separating tank and the bottom of the valve 5 is connected to a liquid discharging hole 7 through a flexible pipe 6. Since the liquid intake valve moves upward and downward depending on the up and down movement of the liquid surface, the amt. of the liquid to be intaken is controlled optionally by moving the top of a weir. Further, when separated solid accumulated on the bottom is to be discharged, a slit controlling cock 10 connected to an operating rod 17 is opened slightly by operating an opening/closing device 19 by the operation of a handle 18. If a valve 14 in a water discharging pipe is opened before or after the opening of the slit controlling cock 10, precipitated solid is introduced into an eddy current pipe through the slit generating spiral flow, thus, the precipitate can be discharged completely out of the tank. Accordingly, the discharge of sludge is performed from the bottom of the tank downwardly, there is no fear for causing turbulence of the boundary surface of the precipitate in the upper part of the tank.
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