Rotary pumps can be operated in both forward and reverse directions, making it feasible to discharge materials in reverse. As a positive displacement pump, the working principle of a rotary pump is to change the working volume through the relative motion between the rotating rotor and the stationary pump body, thereby achieving the suction and discharge of liquid. This type of pump does not have directionality and can rotate in both forward and reverse directions. Therefore, in certain operating conditions, such as cleaning the pool, pumping oil for transportation, loading and unloading, or other materials, reverse feeding is a feasible operation method. Especially in cases where sediment accumulation cannot be completely removed, reverse flushing can be used to disperse the sediment and clean it thoroughly.
However, it should be noted that if a conventional rotary pump undergoes reverse rotation, it may have a certain impact on the pump body, such as bolt detachment of the impeller and shaft, and a decrease in head. In addition, when the rotor pump rotates in reverse, attention should be paid to the direction of the cooling fan of the motor to prevent the motor temperature from rising and causing burnout. Therefore, when using a rotary pump for reverse feeding, it is important to ensure that the pump design and operation comply with safety standards to avoid equipment damage or safety issues caused by improper reverse operation
