A brief introduction to the impeller

The impeller type can provide a wide range of stable operating conditions and high efficiency zones for the stage or overall performance curve. Generally speaking, it is divided into closed, semi open, and open impellers.

Closed impeller can reduce the manufacturing process of the impeller, shorten the production cycle, reduce production costs, become more firm, and the surface error of the processed blade shape is small. The blade shape is evenly distributed along the circumference, and less mass is removed during dynamic balancing.

The loss of gas passing through the impeller should be small, that is, the efficiency of gas passing through the impeller should be high. When the gas flows out of the impeller, all parameters are appropriate to minimize the flow loss when the gas flows through the fixed components behind. The impeller type can provide a wide range of stable operating conditions and high efficiency zones for the stage or overall performance curve.

The impeller is widely used in various engine pump bodies and is a key component for supplying oil to the pump body. Its manufacturing accuracy directly affects the working efficiency of the pump body. Its working principle is to rotate at high speed to bring fuel into the impeller through the inlet port, and then spray it out through the outlet port. As the cross-section of the inlet port is larger than that of the outlet port, the fuel is pressurized during this process, generating strong pressure and being sprayed out from the outlet port.

Under the action of the impeller blades, the gas rotates at high speed with the impeller. The gas is subjected to the centrifugal force of rotation and the diffusion flow inside the impeller, which increases the pressure after passing through the impeller.