Measures to prevent and reduce abrasion of pulp pumps

Pulp pump is a relatively new domestic two - phase flow theory designed. Overcome the water (single-phase flow) theory design of the pump in the suction of solid liquid mixture (two-phase flow) shortcomings, with high efficiency, energy saving, durable role, then pulp pump abrasion measures what?

1. Improve and optimize the hydraulic design of the pump

In the selection and hydraulic design of the pump, fully consider the anti-abrasion performance of the pump requirements. Such as in the selection of pulp pump, give priority to the selection of lower speed pump; In the hydraulic design of the pump, increasing the inlet Angle of the blade, reducing the outlet Angle of the blade, can reduce the uneven blade erosion. The impeller designed by Warman pump is concave at the outlet, so that the speed of the front and rear cover plates on both sides of the impeller is greater than the intermediate speed. The slurry at the outlet is divided into two streams of fluid, rotating to the center, forcing the glume to flow to the center, resulting in an internal vortex, reducing the concentration on both sides, thus reducing the wear of the pump body runner and two side walls.

2, pulp pump manufacturers surface treatment technology

The early widely used ceramic coating technology was to apply glassy porcelain glaze to the surface of a metal substrate and sintering it at high temperature. The porcelain sleeve is firmly bonded to the metal by physical and chemical reactions. The mechanical strength of metal on the whole, the surface of glass corrosion resistance, heat resistance, wear resistance, easy cleaning and decoration characteristics, it is mainly used in steel plate, cast iron, aluminum products and other surfaces; Nowadays, there are many new surface treatment technologies, such as adding tungsten carbide and drill, nickel, drill and chromium composite coating on the impeller surface by high speed flame spraying (HVOF) technology, chemical vapor deposition boride coating technology for complex parts that are difficult to be sprayed by thermal spraying. These technologies can form an extremely hard surface layer on the impeller surface, increasing the resistance to abrasion of the pump.

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