A Roots blower impeller processing method

Abstract

The invention relates to a Roots blower impeller processing method, a three-dimensional model of Roots blower impeller with different balancing hole structures is established before machining, and thethermodynamic analysis of the three-dimensional model of the impeller of each Roots blower is carried out, the three-dimensional model of Roots blower impeller with minimum thermal deformation is obtained. Then the size of balance hole of the three-dimensional model of Roots blower impeller is changed and thermodynamic analysis is carried out to obtain the corresponding size of balance hole withminimum thermal deformation. The Roots blower impeller is machined according to the structure and size of balance hole with minimum thermal deformation. The Roots blower impeller processing method ofthe invention has the advantages of simple steps, accurate results, minimization of the amount of thermal deformation and the like.

Description

technical field [0001] The invention relates to the technical field of processing Roots blower components, in particular to a processing method for a Roots blower impeller. Background technique [0002] The Roots blower is a volumetric rotary blower. Its working principle is to use two impellers to move relative to each other in the cylinder to compress and transport gas. Therefore, the normal meshing state of the two impellers during the rotation is the premise to ensure efficient gas delivery. [0003] The temperature of the Roots blower impeller will increase during the gas compression and delivery process. Due to the complex shape of the outer contour of the impeller and the uneven distribution of thickness, the impeller will produce uneven thermal deformation. This uneven thermal deformation makes the outer contour of the impeller The deformation causes the gap between the mating surfaces of the impeller to deviate from the normal state during the meshing process, which...

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Problems solved by technology

[0003] The temperature of the Roots blower impeller will increase during the gas compression and delivery process. Due to the complex shape of the outer contour of the impeller and the uneven distribution of thickness, the impeller will produce uneven thermal deformation. This uneven thermal deformation makes the outer contour of the impeller The deformation causes the gap between the mating surfaces of the impeller to deviate from the normal state during the meshing process, which may cause local interference, aggravate the local wear of the impeller, reduce the working life, or even bite to death, making the fan unable to operate normally

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