The invention discloses a low-
noise vertical mixed-flow pump, and relates to the technical field of mixed-flow pumps, the low-
noise vertical mixed-flow pump comprises a water outlet
elbow, one end of the water outlet
elbow is fixedly connected with a pump shell, the end, away from the water outlet
elbow, of the pump shell is fixedly connected with a horn
pipe, and the circumferential outer wall of the water outlet elbow is fixedly connected with a sealing shell; a coupler is arranged at the top of the sealing shell, a rotating column is arranged at one end of the coupler, one end of the rotating column penetrates through the interior of the sealing shell, a hub is fixedly connected to the end, away from the coupler, of the rotating column, and impellers distributed circularly at equal intervals are fixedly connected to the outer wall of the circumference of the hub. According to the mixed-flow pump, the bending direction of the first flow guide plate and the second flow guide plate is the same as that of the water outlet elbow, so that liquid can flow smoothly, violent
impact and turbulent flow caused by sudden change of the direction or encountering obstacles are avoided, the
cavitation phenomenon is restrained, high-
frequency noise is reduced, and the operation efficiency and stability of the mixed-flow pump are improved.