How does the impeller of a submersible pump work?
The impeller of the submersible pump is its core component, which is responsible for sucking the liquid from the inlet and discharging it through centrifugal force. The following is the detailed process of the submersible pump impeller:
1. Working principle
Motor drive:
When the motor starts, it drives the pump shaft to rotate through a coupling or direct connection.
The rotation of the pump shaft then drives the impeller to rotate.
Impeller rotation:
The blades on the impeller rotate with the rotation of the pump shaft.
During the rotation of the blades, the shape and angle design of the blades enable the liquid to obtain centrifugal force under the push of the blades.
Liquid throwing and suction:
Under the action of centrifugal force, the liquid is thrown to the outer edge of the impeller to form a high-speed rotating liquid ring.
As the liquid is thrown out, a low-pressure area is formed in the center of the impeller. The pressure difference between this low-pressure area and the inlet pipe causes new liquid to be sucked into the center of the impeller.
As the impeller continues to rotate, this process is repeated, forming a continuous liquid suction and throwing cycle.
Liquid delivery:
The thrown liquid passes through the flow channel of the pump body and is pushed to the outlet, thereby completing the liquid delivery process.
2. Special design and function
Submersible design: The suction port of the submersible pump is below the liquid surface, which can avoid cavitation during the suction process and improve the pump's suction capacity.
Self-priming ability: Submersible pumps usually have good self-priming ability and can suck in liquid and start working in a shorter time.
High efficiency and energy saving: The submersible pump adopts optimized hydraulic design and efficient motor drive, which makes the pump have higher efficiency and lower energy consumption during operation.
3. Application and impact
Submersible pumps are widely used in occasions where liquid transportation is required, such as machine tool cooling, sewage treatment, chemical production, etc.
The temperature of the liquid has a great influence on the operation effect of the pump. In a high temperature environment, the viscosity and density of the liquid will change, thereby affecting the flow rate and head of the pump. Therefore, when using a submersible pump, it is necessary to select the appropriate pump type and material according to the actual situation.
