Semi-open plastic impeller for lining plastic corrosion prevention pump

Abstract

A semi-open plastic impeller for a lining plastic corrosion prevention pump comprises an impeller center plate and a plurality of longitudinally-bent cylinder blades which are circumferentially arranged on the impeller center plate at intervals in a radial manner. The upper end points and the lower end points of the vertical end faces of the ends, located at a suction port of the corrosion prevention pump, of the cylinder blades move in the opposite directions of the horizontal plane, and the cylinder blades are distorted in the radial direction to form distorted blades. An opening ring is arranged at the attack angles of the suction ports of the distorted blades. The diameter of the opening ring is equal to the diameter of a circle defined by attack angles of the multiple distorted blades, and the bottom end of the opening ring is fixedly connected with the attack angles of the distorted blades. The parts, located on the periphery of the opening ring, of the distorted blades are in an open state. The problems that torsion resistance of the impeller is large, and a metal pressing mold is difficult to demould are solved, and the defect that due to thin plastic impeller blades, the blade strength is insufficient can be overcome. Meanwhile, the defect that the flow of a closed type plastic impeller cannot be adjusted can be overcome. Power consumption is small, manufacturing is easy, and cost is saved.

Description

technical field [0001] The invention relates to the manufacturing field of a desulfurization spray circulation pump in the environmental protection machinery industry, in particular to an impeller for a desulfurization spray circulation plastic-lined pump. Background technique [0002] The desulfurization circulating spray pump is the main mechanical equipment used in various flue gas desulfurization, denitrification and dust removal equipment. The system sprays and absorbs the flue gas to achieve the purpose of controlling the environment and purifying the air. [0003] The desulfurization circulating pump used in this position requires anti-corrosion, wear-resistant, and high efficiency. Generally, precious metal pumps with both anti-corrosion and wear-resistant properties are used, such as metals made of 2205. In recent years, steel-lined ultra-high molecular weight polyethylene plastic desulfurization circulating pumps have also been widely used, because steel-lined ult...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies, the present invention improves a method that not only solves the problems of large impeller twist and difficult demoulding of metal pressing molds, but also solves the shortcomings of insufficient blade strength caused by thin blades of plastic impellers, and at the same time solves the problem of closed plastic impellers. Disadvantages that the flow cannot be adjusted, the power consumption is small, the production is simple, and the semi-open plastic impeller for cost-saving plastic-lined anti-corrosion pumps

The strength of the mouth ring is used to support and increase the strength of the impeller blades, so that the semi-open impeller does not deform during operation, and at the same time solves the problems of impeller blade thickness, blade distortion, impeller injection mold release difficulty, and impeller blade strength.

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