Corrosion-resistant pump of chemical high-temperature pump

Abstract

The invention relates to a corrosion-resistant pump of a chemical high-temperature pump. The corrosion-resistant pump comprises a pump body and an impeller arranged in the pump body, wherein a pump body inlet and a pump body outlet which communicate are formed in the pump body, and the impeller is positioned in the pump body between the pump body inlet and the pump body outlet; a pump cover and amechanical seal gland are arranged on the pump body, a pump shaft is arranged in the pump body, and the impeller is axially positioned through an impeller nut and the pump cover; the impeller nut is in threaded connection with the pump shaft in a screwed mode; through cooling holes are formed in the pump cover and the mechanical seal gland; a side plate is tightly attached to the inner side of thepump body and fixed in the pump body through bolts; the inner surface of the side plate is coated with a silicone rubber matrix material; and the surface of the impeller is coated with a silicone rubber matrix material. According to the corrosion-resistant pump, only the side plate needs to be replaced under long-term abrasion, and the pump body does not need to be replaced. The outer contour slope of the impeller nut of the pump and the axis form an angle of 30 degrees, and in order to reduce inflow flow state hydraulic collision loss and vortex, the inner surface of the side plate and the surface of the impeller are coated with corrosion-resistant coatings, and later maintenance cost is reduced.

Description

Technical field [0001] The invention relates to a chemical high temperature pump corrosion-resistant pump, which belongs to the technical field of chemical pumps. Background technique [0002] With the rapid development of my country's economic construction, the petroleum and chemical industries have also developed vigorously. As an important power equipment that provides energy in the petroleum and chemical industries-chemical pumps, my country has begun to realize localization. [0003] Because chemical pumps need to work under high temperature, low temperature, high pressure, flammable, explosive, toxic and strong corrosive media in chemical or petrochemical production, their performance requirements are high, chemical pumps can also have high inlet pressure and high viscosity , Working under small flow and high cavitation conditions, therefore, the performance requirements of the chemical pump are relatively high. The present invention starts from two aspects: the inner surfac...

AI Technical Summary

Problems solved by technology

Although the structure of the device is simple and easy to operate, if the pump body is severely worn and corroded, the cost of replacing the pump body will be high, and the flow-passing parts have not been treated with high corrosion resistance and high abrasion resistance.

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