A centrifugal pump impeller with reduced flow

Abstract

The invention discloses a centrifugal pump impeller capable of reducing flow rate. The centrifugal pump impeller comprises a front cover, a rear cover and a vane and is characterized in that a flow reducing plate is arranged on the vane, the flow reducing plate is of a tabulate structure, the flow reducing plate stretches inwards to the middle section of the vane from the edge of the impeller, the contact point of the flow reducing plate and the edge of the impeller is a critical point, and an included angle between the radial direction of the impeller and the flow reducing plate at the critical point equals an outlet mounting angle of the impeller. Compared with the prior art, the centrifugal pump impeller has the following advantages: the centrifugal pump impeller capable of reducing flow rate comprises the front cover, the rear cover and the vane and is characterized in that flow reducing plate is arranged on the vane, the flow reducing plate is of a tabulate structure, the flow reducing plate stretches inwards to the middle section of the vane from the edge of the impeller, the contact point of the flow reducing plate and the edge of the impeller is a critical point, and the included angle between the radial direction of the impeller and the flow reducing plate at the critical point equals the outlet mounting angle of the impeller.

Description

technical field [0001] The invention relates to the technical field of liquid conveying equipment, in particular to the technical field of energy-saving transformation of a pump room. Background technique [0002] In the actual production and operation of the centrifugal pump, there will be a mismatch between the actual demand and the pump performance. The rated flow rate of the pump is greater than the actual demand, which will cause the centrifugal pump to fail to achieve the optimal operating state during operation, which will cause a waste of resources. [0003] The existing impeller cutting methods are aimed at the fact that the pump flow rate and lift are greater than the actual needs, and the following methods are usually used for energy-saving transformation: [0004] 1) Frequency conversion speed regulation, increase the frequency converter, and improve the performance of the pump by adjusting the speed; [0005] 2) Changing the blade angle or the front guide vane ...

AI Technical Summary

Problems solved by technology

[0005] 2) Changing the blade angle or the front guide vane angle, this method is only suitable for axial flow pumps and diagonal flow pumps, not for centrifugal pumps;

Now for the situation that the pump head is basically unchanged but the flow rate is too large, this method is difficult to satisfy

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