PUMP, VORTEX SUPPRESSION MEMBER AND PUMP FACILITY

To provide a pump capable of suppressing occurrence of underwater vortex and air suction vortex, and capable of being easily manufactured.SOLUTION: A vortex suppression member 12 is provided at a suction port. The vortex suppression member 12 has a cylindrical body 27 that is open at both upper and lower ends, has a closed periphery, and is formed in a fan shape in plan view. The inside of the cylindrical body 27 communicates with the suction port. The cylindrical body 27 has a curved plate 31 curved in an arc shape, and a flat baffle plate 32 provided between both ends in a circumferential direction of the curved plate 31. In the plan view, the center of curvature of the curved plate 31 substantially coincides with the axial core of the suction port, and the radius of the curved plate 31 is greater than or equal to the radius of the suction port.SELECTED DRAWING: Figure 5 【課題】水中渦および空気吸込渦の発生を抑制することができ、容易に製作することが可能なポンプを提供する。【解決手段】吸込口に渦抑制部材１２が設けられ、渦抑制部材１２は、上下両端が開口するとともに周囲が閉じており且つ平面視において扇形状に形成された筒体２７を有し、筒体２７の内部が吸込口に連通し、筒体２７は、円弧状に湾曲した湾曲板３１と、湾曲板３１の周方向における両端間に設けられた平板状のバッフル板３２とを有し、平面視において、湾曲板３１の湾曲中心が吸込口の軸心に実質的に一致し、湾曲板３１の半径が吸込口の半径以上である。【選択図】図５