Dual-phase fluid pump lined with polymer composite silicon carbide ceramic material

Abstract

The invention discloses a dual-phase fluid pump lined with a polymer composite silicon carbide ceramic material. The dual-phase fluid pump lined with the polymer composite silicon carbide ceramic material comprises a pump body. An impeller is arranged in the pump body. A pump shaft is arranged beside the impeller. A front wear-resisting plate and a rear wear-resisting plate are arranged on the inner side of the pump body. A shaft sleeve is arranged on the outer side of the pump shaft. A mechanical seal is arranged on the shaft sleeve. The front wear-resisting plate is arranged beside the rearwear-resisting plate. An adjustment pressing block is arranged on the front wear-resisting plate. A sealing ring is arranged on the lower side of the adjustment pressing block. A pear-shaped or rectangular volute chamber is arranged in the pump body. The dual-phase fluid pump lined with the polymer composite silicon carbide ceramic material is very high in hardness and wear resistance, and good incorrosion resistance, can almost resist the corrosion caused by all media except hydrofluoric acid, fluosilicic acid and concentrated alkali, can meet the requirements for being used in different working conditions, and thereby being better in using effect.

Description

technical field [0001] The invention relates to a two-phase flow pump, in particular to a two-phase flow pump lined with polymer composite silicon carbide ceramic material. Background technique [0002] At present, corrosion-resistant and wear-resistant centrifugal pumps that transport two-phase fluids (liquid and solid) at home and abroad, such as slurry pumps, desulfurization pumps, gravel pumps, dredging pumps, etc. Some of the gap control between impellers cannot be adjusted, and some only adjust the gap between the front cover plate of the impeller and the wear plate by moving the rotor part forward. The control of this gap is the basic guarantee for the various performance indicators of the pump to meet the requirements. Because the two-phase fluid (liquid and solid) conveyed is corrosive and abrasive, so with the continuous aggravation of corrosion and abrasion, it is necessary to ensure the performance of the pump. To meet the requirements of various performance ind...

AI Technical Summary

Problems solved by technology

Although the gap between the impeller front cover plate and the wear plate has been adjusted, the center of the impeller and the flow channel of the pump body is unavoidably eccentric, and the gap between the impeller rear cover plate and the rear pump cover is increased instead. It not only increases the hydraulic loss of the pump, but also increases the pressure of the sealing chamber, which brings increased wear to the friction pair of the mechanical seal, greatly shortens the life of the mechanical seal, and thus greatly shortens the service life of the pump.

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