Compared with centrifugal pumps (milk pumps): Centrifugal pumps have been widely used due to their simple structure and low cost. It has the following main differences compared to rotary pumps: chemical pumps, sanitary pumps
(1) Rotary pumps belong to positive displacement pumps, and the conveying flow can be accurately controlled or easily made into variable displacement pumps. The output flow rate of a centrifugal pump cannot be controlled and decreases with increasing resistance; Rotary pumps have strong self-priming ability, while centrifugal pumps must be filled with liquid before operation.
(2) The speed of the rotary pump is very low, usually between 200rmp and 600rmp, and the conveyed material is smoothly output without damaging its composition. The speed of centrifugal pumps is very high, and the conveyed material is subjected to strong impact and centrifugal force. Therefore, centrifugal pumps often produce inconsistent material composition when conveying mixtures, resulting in a decrease in the quality of the finished product. And the universal conveying pump is the best choice to solve this problem, so it is particularly suitable for conveying mixed materials and even materials containing solid particles.
(3) Rotary pumps can be used to transport substances with high viscosity, so they are also known as colloid pumps. Centrifugal pumps do not have this characteristic.
(4) Rotary pumps can be easily made into varieties with high output pressure, such as 150kgf/cm2, suitable for long-distance or high resistance quantitative transportation.
(5) The production of rotary pumps is more complex, precise, and costly, which is also the biggest difference compared to centrifugal pumps.
