What is the core difference between Roots blower and water pump?

Roots blower and water pump are fluid machines, but their functions and working principles are different. Their core differences are:

Different functions: Roots blower is mainly used for conveying gas, including air supply, exhaust, ventilation, etc; The pump is mainly used for conveying liquid, such as water supply, drainage, circulating water, etc.

The working principle is different: Roots blower uses power machinery to drive the impeller to rotate, and accelerates the exhaust of gas through centrifugal force to achieve the purpose of conveying gas. The water pump uses the impeller rotation to suck in the liquid, and pushes the liquid to the pipeline or pool through the pressure difference.

Different working parameters: due to different transmission media, the working parameters of Roots blower and water pump are also different. For example, the working pressure of Roots blower is usually small, generally not more than 5000Pa, while the working pressure of water pump is much larger, which can reach dozens of MPa.

Different design structures: in order to adapt to different working environments, the design structures of Roots blower and water pump are also different. For example, Roots blower usually adopts direct connection structure, which makes the body more compact; The water pump adopts a split structure to replace the impeller and maintain the internal components.

In a word, although Roots blower and water pump are fluid machines, there are obvious differences in their functions, working principles, working parameters and design structures.