Wear-resistant corrosion-resistant impeller for centrifugal pump

Abstract

The invention relates to a wear-resistant corrosion-resistant impeller for a centrifugal pump. The impeller comprises blades, an impeller disc, a front cover plate and a rear cover plate, the blades are arranged on the periphery of the impeller disc in a sleeving mode, the roots of the front cover plate and the rear cover plate are fixedly arranged on the impeller disc, the plate surfaces of the front cover plate and the rear cover plate cover the middle parts of the two sides of the blades correspondingly, the front cover plate and the rear cover plate can play a role in reinforcing the blades; and the impeller disc, the front cover plate and the rear cover plate are all made of wear-resistant alloy materials, the blades are made of silicon carbide ceramic materials, and the outer surfaces of the blades, the impeller disc, the front cover plate and the rear cover plate each are coated with a layer of corrosion-resistant coating. The impeller for the centrifugal pump is simple and reasonable in structure, easy to manufacture and stable in work, has excellent wear resistance and corrosion resistance and is long in service life.

Description

technical field [0001] The invention relates to the technical field of centrifugal pump equipment, in particular to a wear-resistant impeller for a centrifugal pump. Background technique [0002] Centrifugal pumps are widely used in chemical industry production. It is a pump valve that relies on the centrifugal force generated when the impeller rotates. It can be seen that the impeller is the core component of the centrifugal pump. The quality of the impeller determines the performance and service life of the centrifugal pump. . In the production environment of the chemical industry, the slurry delivered by the centrifugal pump is highly abrasive and corrosive, and the impeller is the most concentrated part of the slurry wear and overlooking. Traditional centrifugal pump impellers are made of alloy cast iron, ceramics and polyurethane. Among them, alloy cast iron impellers have poor wear resistance and short service life. Ceramic impellers are lighter in weight and stronger...

AI Technical Summary

Problems solved by technology

Traditional centrifugal pump impellers are made of alloy cast iron, ceramics and polyurethane. Among them, alloy cast iron impellers have poor wear resistance and short service life. Ceramic impellers are lighter in weight and stronger in wear resistance than alloy cast iron impellers. Because ceramics are brittle media, they are easy to be broken and scrapped due to impact during installation and use. The wear resistance and corrosion resistance of polyurethane impellers are better than those of the former two impellers. However, there are large particles of medium in the slurry of polyurethane impellers. When the impeller is subjected to high stress impact, it will be torn into pieces and scrapped

It can be seen that the structure and material of centrifugal pump impellers currently on the market cannot meet the performance requirements for wear resistance, corrosion resistance and ease of processing in chemical industry production. Therefore, it is urgent to develop an impeller with strong wear resistance. Impellers with high performance loss to meet the actual needs of chemical industry production