Method for eliminating unbalanced force of single-blade pump impeller

Abstract

The invention relates to a method for eliminating unbalanced force of a single-blade pump impeller. The method is characterized by comprising a step of determining a blade gravity shifting angle (1), non-thickening gravity position (2), a thickening central line (3), a single side thickening range (4), a thickening starting line (5), a thickening ending line (6), a thickening radius starting point derivation axes distance (7), a hub thickening radius (8) and a hub thickening thickness (9). Based on a key point, when the blade is designed, unbalance of the single-blade pump impeller is considered; solid modeling is performed to the blade by a three-dimensional modeling software PROE; a gravity position is found in the software so as to count a derivation angle; the hub is thickened or the blade is thickened on a position opposite to the gravity position; by dint of a pre-accentuation method, weighted quality can be estimated; data is fed back to an impeller mould; therefore, the impeller achieves quality balance initially.

Description

technical field [0001] The invention relates to a single vane pump, in particular to a method for eliminating the unbalanced force of the impeller of the single vane pump. Background technique [0002] At present, single-vane pumps mainly include single-channel pumps and screw centrifugal pumps. They all have good non-clogging and non-destructive performance, and have the characteristics of high efficiency, wide high-efficiency area, and gentle head curve. They are suitable for transporting large particles. Solid substances or liquids that are easy to entangle long fibers and other debris. However, the eccentric structure of the single-channel pump and single-screw centrifugal pump impeller makes the mass distribution uneven, and the center of gravity of the impeller is not on its axis, resulting in an imbalance of mass force, which is usually balanced by setting a balance weight. However, the balance weight may be worn or loosened during long-term operation, so that the im...

AI Technical Summary

Problems solved by technology

However, the eccentric structure of the single-channel pump and single-screw centrifugal pump impeller makes the mass distribution uneven, and the center of gravity of the impeller is not on its axis, resulting in an unbalanced mass force, which is usually balanced by setting a balance block

However, the balance weight may be worn or loosened during long-term operation, so that the impeller is no longer balanced, so that there is a lot of noise and vibration during operation, which affects the performance of the pump and shortens its service life.

Images