| 摘要 |
PURPOSE:To obviate the necessity for a water tank at a high position by installing a flow-rate switch on the discharge pipe of a pump while installing a check valve between the pump and the flow-rate switch, and a pressure tank in the close vicinity of the upstream side of the flow-rate switch, thus permitting a pressurization apparatus to be operated by said flow-rate switch. CONSTITUTION:The water which is supplied through a feed water pipe (g) from a water tank placed at a high position passes through a pump (p), and then through a check valve (n) fitted in the close vicinity of the discharge port of the pump (p), and further passes through a discharge pipe (m) laid on the downstream and a flow-rate switch (j), and then the water is supplied through a feed water pipe (d''). A pressure tank (t) is also installed, being branched from the discharge pipe (m). When people begin to use water on the upper most story, the flow-rate switch (j) detects the flow of water, though the water head is small and the signal is transmitted to a prime mover for driving the pump (p), through a control panel (f), and the pump (p) is driven for pressurization. |
