Magnetically-actuated chemical flow-process pump

Abstract

The invention discloses a magnetic fore driving chemical flow pump, comprising pump shell, pump shaft, vane wheel, inner coupling, spacing sleeve and base. Inner of pump shaft is metal and outer of pump shaft is coated with peek layer; inner of said vane wheel is metal and outer of vane wheel is coated with peek layer; inner of said inner coupling is metal, on which permanent magnetic is inlayed and outer of it is coated with peek layer; outer of said spacing sleeve is metal and outer of it is coated with peek layer. Peek is provided with high rigidity and intensity, and good high temperature and corrosion resistance. So the invention with peek structure is provided with good rigidity, intensity and high temperature resistance, and can satisfy working demand of magnetic force pump. It can improve reliability and service life of pump.

Description

technical field [0001] The invention relates to a magnetically driven chemical process pump, which belongs to the technical field of liquid pumps. Background technique [0002] Chinese Invention Patent Specification (publication number CN1648459A) discloses a plastic magnetic pump. The impeller of the magnetic pump is made of metal material, and its outer surface is covered with a fiber-reinforced resin layer. The isolation sleeve is made of fiber-reinforced resin. There is a metal reinforcement mesh, the pump shaft is made of metal material, and its outer surface is covered with a fiber reinforced resin layer. Since this type of pump needs to transport corrosive chemical substances, it is necessary to make the corresponding parts in the pump into a form in which the interior is made of metal materials and the surface is covered with fiber-reinforced resin. Moreover, when the pump works continuously, it will generate a lot of heat, so the fiber reinforced resin used is requ...

AI Technical Summary

Problems solved by technology

But general resins, such as tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA, commonly known as soluble polytetrafluoroethylene), polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), perfluoro (ethylene - Propylene) copolymer (F46), etc., the hardness, strength and high temperature resistance are relatively poor, even after fiber reinforcement (such as carbon fiber reinforcement or glass fiber reinforcement), the desired effect cannot be achieved, so it leads to the use of such materials. The parts bear poor pressure and are easy to bend and deform, which will lead to the damage of the whole pump

In addition, the isolation sleeve in the prior art is made of fiber-reinforced resin, and the outside is covered with a metal reinforcement mesh. The strength of this structure is low, so that the isolation sleeve is easily deformed at high temperature, resulting in damage to the pump

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