Compound impeller rotor

Abstract

The invention relates to a compound impeller rotor. The compound impeller rotor comprises an impeller body installed on a pump shaft, the impeller body comprises a metal hub lining and a non-metal blade lining body wrapped and machined on the peripheral surface of the lining of the metal hub in a compression molding mode, and the non-metal blade lining body is composed of an ultrahigh molecular weight polyethylene material. The impeller body is compounded by two materials of metal and plastic. Excellent abrasive resistance of ultrahigh molecular weight polyethylene and high strength of metal are combined, the weight of the impeller body is reduced, and the material cost is reduced; in addition, the phenomenon of high thickness of the impeller body is avoided, and the strength of the impeller body is ensured. The impeller body is wear-proof and corrosion-proof, in addition, the unbalanced eccentric torque and starting inertia of the impeller body are reduced, and the balance degree of the impeller body is ensured; the dynamic balance degree of the impeller body is ensured, the vibration valve of a pump can be conveniently reduced, the rotor is easy to machine and low in cost, and the running efficiency of the pump is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of pumps, in particular to a composite impeller rotor. Background technique [0002] Traditional impellers are usually made of metal materials, which makes most metal impellers have poor corrosion resistance, poor wear resistance, and low temperature difference resistance, and are not suitable for acid-base and hot and cold conditions. A small part of metal impellers are corrosion-resistant and wear-resistant. Sex is good, but the cost is high. For example, in order to ensure the strength of the blade, the traditional semi-open impeller is mostly made of metal. However, when the pump transports some corrosive media, higher requirements are placed on the metal material, such as 316L stainless steel, two-way stainless steel, Hastelloy, etc. . This will not only increase the cost of materials, but because these materials have high surface hardness and put forward higher requirements for processing, the cost w...

AI Technical Summary

Problems solved by technology

This will not only increase the cost of materials, because these materials have high surface hardness, but also put forward higher requirements for processing, resulting in a substantial increase in costs

In addition, there are some non-metal semi-open impeller structures on the market, the main function is anti-corrosion, due to the particularity of this structure, in order to adapt to the strength required by the high-speed rotating impeller, the blade thickness will be increased during the design process

According to the design principle of the vane pump, when the vane is thicker, the displacement coefficient of the vane inlet and outlet will increase, resulting in a decrease in pump efficiency. When the pump runs for a long time, it will increase the user's use cost.

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