Ultralow-cavitation horizontal centrifugal pump adopting four-port suction mode

The utility model discloses an ultralow cavitation horizontal centrifugal pump adopting a four-port suction mode, which comprises a centrifugal pump, a radial bearing body and a pump shaft, and further comprises a supporting and connecting mechanism and a shaft protecting mechanism, the supporting and connecting mechanism is composed of a U-shaped seat, an arc-shaped supporting plate, a supporting block, a batten and a side plate, the arc-shaped supporting plate is fixedly connected to the middle of the U-shaped seat, and the supporting block is fixedly connected to the middle of the arc-shaped supporting plate. The arc-shaped supporting plate is welded to the bottom end of the centrifugal pump, a supporting block is welded between the bottom end of the arc-shaped supporting plate and the U-shaped seat, strip plates are welded to the two ends of the bottom of the U-shaped seat, the arc-shaped supporting plate of the supporting and connecting mechanism is welded to the lower portion of the centrifugal pump to