WATER TREATMENT DEVICE

To provide a water treatment device that is optimal from the viewpoints of the life of a filter device and the power consumption of a feed pump by keeping the amount of discharge from the feed pump constant as a requested desired treatment flow rate regardless of an advancing state of clogging of th...

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1. Verfasser: SATO GENICHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a water treatment device that is optimal from the viewpoints of the life of a filter device and the power consumption of a feed pump by keeping the amount of discharge from the feed pump constant as a requested desired treatment flow rate regardless of an advancing state of clogging of the filter device, while suppressing an increase in cost.SOLUTION: A water treatment device 1 includes: a feed pump 3 that feeds raw water into a filter device 2 under pressure by driving an electric motor; an ammeter 4 and a pressure sensor 5 for grasping a driving state of the feed pump 3; and a control device 6 that controls the rotating speed of the electric motor by selecting, based on measurement results from the ammeter 4 and the pressure sensor 5, the optimum frequency from a plurality of frequencies at which the amount of discharge from the feed pump 3 is constant. As a result, the water treatment device 1 can keep the amount of discharge from the feed pump 3 constant as a requested desired treatment flow rate regardless of an advancing state of clogging of the filter device 2 and is optimal from the viewpoints of the life of the filter device 2 and the power consumption of the feed pump 3.SELECTED DRAWING: Figure 1 【課題】コストアップを抑制したうえで、ろ過装置の目詰まりの進行状況に関わらず、圧送ポンプからの吐出量を、要求される所望処理流量として一定に維持することで、ろ過装置の寿命、及び圧送ポンプの消費電力の観点から最適となる水処理装置を提供する。【解決手段】水処理装置1は、電動モータの駆動により原水をろ過装置2内に圧送する圧送ポンプ3と、該圧送ポンプ3の駆動状態を把握するための電流計4及び圧力センサ5と、該電流計4及び圧力センサ5からの測定結果により、圧送ポンプ3からの吐出量が一定となる複数の周波数から最適な周波数を選択して、電動モータの回転数を制御する制御装置6と、を備える。その結果、水処理装置1は、ろ過装置2の目詰まりの進行状況に関わらず、圧送ポンプ3からの吐出量を、要求される所望処理流量として一定に維持することができ、ろ過装置2の寿命、及び圧送ポンプ3の消費電力の観点から最適となる。【選択図】図1