PROBLEM TO BE SOLVED: To provide a dialysis fluid supply device capable of strictly controlling an amount of removed water in dialysis using a soft supply/discharge container while achieving reduction of cost without using a flow rate adjusting valve.SOLUTION: A dialysis fluid supply device 11 includes: a soft supply/discharge container 30 having a displaceable partition 40 that partitions the inside into a fluid supply chamber A and a fluid discharge chamber B a fluid supply pump 51 for supplying a dialysis fluid to the fluid supply chamber A of the supply/discharge container 30 a circulation pump 80 for sending the dialysis fluid from the fluid supply chamber A to the fluid discharge chamber B a water removing pump 90 a first relief valve 55 of the fluid supply pump 51 a second relief valve 81 of the circulation pump 80 and a control device 110 for adjusting the flow rate of the dialysis fluid that flows from the fluid supply chamber A to the fluid discharge chamber B by controlling a drive voltage of the circulation pump 80, and temporarily increasing the drive voltage of the circulation pump 80 so that, when the fluid discharge chamber B is filled with the dialysis fluid, the output pressure of the circulation pump 80 applied to the fluid discharge chamber B becomes a relief pressure.COPYRIGHT: (C)2014,JPO&INPIT【課題】軟質性の給排容器を使用し、流量調整バルブを使用せずに低コスト化を図りつつ、透析の除水量を厳格に制御可能な透析液供給装置を提供する。【解決手段】透析供給装置11は、内部を給液室Aと排液室Bに隔てる変位可能な隔壁40を有する軟質性の給排容器30と、給排容器30の給液室Aに透析液を送る給液ポンプ51と、給液室Aから排液室Bに透析液を送る循環ポンプ80と、除水ポンプ90と、給液ポンプ51の第1のリリーフ弁55と、循環ポンプ80の第2のリリーフ弁81と、循環ポンプ80の駆動電圧を制御することによって給液室Aから排液室Bに流れる透析液の流量を調整し、排液室Bが透析液で満杯になるときに、排液室Bに付加される循環ポンプ80の出力圧がリリーフ圧になるように循環ポンプ80の駆動電圧を一時的に上昇させる制御装置110と、を有する。【選択図】図1
