Multi-stage pump system components

The multi-stage pump consists of five stages, one grade and four secondary, and its components include: stator, rotor, balancing mechanism, shaft end sealing mechanism, sliding pin, bearing and sliding pin system. Weihu multistage pump manufacturers to learn more about these components

1 stator part

Mainly by the bearing, the first cover, the water section, guide vane, the water section, tail cover and other parts with tightening bolts connected to the inlet section of the suction port, the water outlet are vertical upward, , The middle section, the water section of the static sealing surface is by the metal surface plus "o" -shaped seal, in the disassembly of the pump, the sealing surface must be carefully protected, guide vane cover and the middle of the sealing surface with anti- Vane at the three copper nails in the tightening of the bolt when compressed 0.6 to 0.8 mm to ensure.

2 rotor part

The structure of the rotor is closely related to the overall structure of the pump, the stability of the operation and the performance of the product, and the main performance is the way the impeller is mounted on the shaft. The feed pump is slid on the shaft and one is used to withstand the thrust Of the balance plate and consider the thermal expansion of the toothed pad and pressing ring, shaft end sets, rubber seal ring, casing, sleeve, lock nut and other components.

3 balance body

The multistage pump uses the balance plate steering force and the rotor is positioned in the axial direction.The stability of the working mechanism of this balancing mechanism is closely related to the reliability and service life of the product. The balancing mechanism is composed of balance plate, And other components, to 100% balance of axial force, high sensitivity, changes in working conditions automatically adjust the ability to start, stop and load changes will cause the balance plate and balance sets of wear and tear, it should minimize the number of starts and Increase the balance plate, balance the end face hardness. In order to prevent the balance of grinding, increase the thrust bearing.

4-axis seal

Shaft end seal has become the biggest threat to long-term continuous operation of the feed pump. In order to overcome this weak link, it is necessary to consider the good cooling of the stuffing box when packing is used, and the cooling water is introduced from the top cover and the tail cover. Cover, tail cover with heat sink, cooling water for the ambient temperature of industrial water or tap water pressure of 0.1MPa or more, the water temperature does not exceed 33 ℃, the water temperature difference of not more than 10 ℃.

5 bearing part

The bearing is directly related to the safe operation of the pump one of the key components, therefore, its structure must be safe and reliable.The pump rotor is located in the bearing body of the two sliding bearings to support the bearing with thin oil lubrication when running for a period of time bearing , The lower part of the bearing body can be used to adjust the adjustment screw, so that the rotor is always in the center position, each adjustment of the adjustment screw, the bearing body and the first cover, tail cover should be re-positioning of the positioning pin hole positioning.

6 sliding system

The feet of the sections of the multi-stage pump are supported on the table surface. The four feet of the inlet and outlet sections are fixed by the four bolts to ensure that the concentrations of the sections are maintained at the same time. Point in the pump inlet side, multi-stage pump plate and the entrance section at the foot with a cross pin, the lower part of the vertical pin to ensure that the multi-stage pump along the longitudinal side of the export side of the free expansion of the export section of the lower part of the longitudinal pin, Vertical centerline expansion.

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