Desulphurization pump with combined impeller rotor

Abstract

The invention relates to a desulphurization pump with a combined impeller rotor. The desulphurization pump comprises the combined impeller rotor, a pump case, a pump inlet part, a pump outlet part anda pump back cover plate, wherein the pump inlet part, the pump outlet part and the pump back cover plate are installed on the pump case to form a pump cavity for containing the combined impeller rotor in an enclosure manner; the combined impeller rotor comprises an impeller body installed on a pump shaft, the impeller body comprises a metal hub lining and a nonmetal blade lining body with which the peripheral surface of the metal hub lining is wrapped in a compression-molding manner, and the nonmetal blade lining body is made from an ultrahigh molecular weight polyethylene material. Accordingto the desulphurization pump with the combined impeller rotor, the deadweight of the impeller body is reduced, and the material cost is saved; in addition, the strength of the impeller body is also guaranteed while it is avoided that the impeller rotor is too thick; the impeller body is resistant to wear and corrosion, and a vibration value of the pump can be reduced; meanwhile, processing is easy, the cost is low, 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 desulfurization pump with 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 requirement...

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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