In the big family of slurry pumps, we usually refer to the slurry pumps other than single-stage slurry pumps as multi-stage slurry pumps. The structure of the multi-stage slurry pumps is more complicated and the maintenance is even more troublesome. Interpretation of the structure and maintenance of multi-stage slurry pump (A) the structure of multi-stage slurry pump Multi-stage slurry pump is mainly composed of stator, rotor, bearing and shaft seal composed of four parts: 1, multi-stage slurry pump stator part Mainly by the suction section, the middle section, vomiting section and the guide vane and other components, there are tightening bolts to clamp the sections to form a studio. D-type pump generally horizontal inhalation, vertical spit up; for the injection of oil, the pump import and export are up vertically. DG-type multi-stage slurry pump out, the entrance are up vertically. 2, multi-stage slurry pump rotor mainly by the shaft, impeller, balance disc and sleeve and other components. The axial force is balanced by the balance disc. 3, multi-stage slurry pump bearings mainly by the bearing body, bearing and bearing gland and other components, bearing grease or thin oil lubrication. 4, multi-stage slurry pump shaft seal with soft packing seal, mainly by the inlet section and tail cover on the letter, packing, retaining ring and other components. D-pump water seal water from the pump pressure water. DG pump water seal water from the external water supply. 5, multi-stage slurry pump rotary pump through the elastic coupling directly driven by the prime mover. From the original motivation to see the pump, the pump rotates clockwise D, DG-type pump is a horizontal single-suction multi-stage segmented centrifugal pump. For the transport of water (containing less than 1% impurity, particle size less than 0.1mm) or other physical and chemical properties similar to water. D-type pump medium temperature less than 80 ℃, suitable for mine drainage, oilfield water, factories and cities to the drainage and other occasions. Oilfield water injection pump according to the corrosive nature of the pump using different materials. DG-type pump medium temperature less than 105 ℃, suitable for a variety of boiler feed water. (B) multi-level slurry pump management, maintenance and operation precautions The pump is divided into two aspects of electricity and machine, for the machine, the main maintenance records transferred out before the comparison to know. Followed by the electrical aspects, and to understand the power of each pump motor, to his control system have a certain understanding. (Editor: Huang Nengwen QQ :)
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