A centrifugal pump with anti-cavitation structure

Abstract

This invention relates to the field of centrifugal pump technology, and more particularly to a centrifugal pump with an anti-cavitation structure. It includes a mounting frame, on the upper side of which a drive motor, pump casing, and coupling are mounted. The coupling is located between the drive motor and the pump casing. The pump casing has an exhaust port, and a drive shaft is rotatably connected to the pump casing. The coupling transmits power from the drive motor to the drive shaft. An impeller located inside the pump casing is detachably connected to the drive shaft. The impeller blades have several protrusions. A liquid storage tank is fixed to the upper side of the mounting frame via a connecting frame. This invention stores a fixed amount of wastewater in the liquid storage tank. During a second startup after shutdown, the wastewater in the storage tank is discharged into the pump casing, achieving "autonomous priming" without additional operation. This shortens shutdown preparation time and restart waiting time, while also improving the overall efficiency of wastewater treatment.

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