Cavitation-proof double-suction impeller for water pumps

Abstract

The invention discloses a cavitation-proof double-suction impeller for water pump, comprises a base and impeller blades, A support bar is arranged above the base, A motor rack is mounted above the jigplate, one end of the transmission shaft is arranged on the inner side of the motor, the outer middle part of the main rod is provided with bearings, The outer surface of the bearing is provided witha hole groove, the outer side of the impeller blade is fixed with an impeller frame, the outer surface of the impeller frame is fixed with a base, a rubber ring is installed inside the cover cap, andthe inner side of the rubber ring penetrates the upper end of the piston rod, the outer side of the lower end of the piston rod is provided with a threaded strip, and the outer side of the threaded strip is provided with a channel. The double-suction impeller with anti-cavitation structure is perfect, when the temperature of the internal bearing is raised after long-term use, the temperature canbe reduced in time, so that the service life of the bearing in the double-suction impeller is long, and the impeller blade in the double-suction impeller has certain anti-cavitation ability.

Description

technical field [0001] The invention relates to the technical field of double-suction impeller equipment for water pumps, in particular to a cavitation-proof double-suction impeller for water pumps. Background technique [0002] A water pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsions, and suspoemulsions. And liquid metal, etc., the impeller of the water pump is made of cast iron, and the blades on the impeller of the water pump play a major role. The shape and size of the impeller of the water pump are closely related to the performance of the water pump. The impeller of the water pump can generally be divided into two types: single suction type and double suction type. , The single-suction impeller absorbs water from one side, the impeller of small...

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of anti-cavitation double-suction impeller for water pumps, to solve the problem that the general double-suction impeller structure is fixed and single in the above-mentioned background technology, and its internal bearing needs to withstand twice the single-suction impeller when in use. The pressure of the double-suction impeller leads to the short service life of the bearings in the double-suction impeller. Secondly, the width of the inlet side between the impeller blades in the general double-suction impeller is relatively narrow, resulting in a relatively high relative velocity of the impeller blade inlet, and the surface of the impeller blades is easily damaged by liquid. Continuous beating, under this high-speed, high-pressure hydraulic impact, the surface of the impeller blades will be eroded due to fatigue and appear pitted, honeycomb sponge-like, which will accelerate the damage of the impeller blades

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