?How does a suction pump work
?How does a suction pump work
uses. A suction pump works by atmospheric pressure; when the piston is raised, creating a partial vacuum, atmospheric pressure outside forces water into the cylinder, whence it is permitted to escape by an outlet valve.
A suction pump works by creating a low-pressure area (a vacuum) within the pump. This pressure difference between the inside of the pump and the surrounding environment causes atmospheric pressure to push fluid into the pump. The pump then expels the fluid through a separate outlet.
This video explains the working principle of a suction pump with a simple experiment:
Here’s a more detailed explanation:
- ۱٫ Creating a Vacuum:The pump’s mechanism, often involving a piston or an impeller, reduces the air pressure within the pump’s chamber.
- ۲٫ Atmospheric Pressure:The higher atmospheric pressure outside the pump then pushes the fluid (like water) into the low-pressure area inside the pump.
- ۳٫ Fluid Movement:As the pump continues to operate, it maintains this pressure difference, causing a continuous flow of fluid into the pump and then out through the discharge.
- ۴٫ Centrifugal Pumps:Many modern suction pumps, especially for liquids, use a rotating impeller within a casing to create this pressure difference. The spinning impeller pushes the fluid outward, creating a vacuum at the center which draws in more fluid.
- ۵٫ Suction vs. Pressure:While the term “suction” is commonly used, it’s actually atmospheric pressure doing the pushing. The pump’s role is to create a low-pressure area to facilitate this pushing action.
This video explains how a centrifugal pump creates suction and pressure to move fluid:
