Horizontal multi-stage centrifugal pump structure composition and working principle

Horizontal multi-stage centrifugal pump structure:

horizontal multi-stage centrifugal pump double shell type and block type two kinds, the use of sectional multi-stage centrifugal pump more. Sectional horizontal multi-stage centrifugal pump is a vertical subdivision multi-stage pump, it has a front and a late and several middle, with four long rod bolt connection is a whole. Installed on the pump shaft by the number of impeller is representative of centrifugal pump series, in the middle of each impeller with a guide roller, the role of the guide roller is basically the same with the volute can mainly converts kinetic energy into static pressure. General for single suction impeller, suction population toward a direction. In order to balance the axial force, in the back end is equipped with balance disc, import connected with equalizer pipe and the front. The rotor can be in the process of work around along the axial channeling, rely on balance disc thrust balance the axial force of impeller group, to keep the rotor near the equilibrium position. At both ends of the shaft with bearings, and the bearing seat, shaft at both ends of the shaft sealing device.

horizontal multi-stage centrifugal pump is mainly composed of fixed back cover, rotor, bearing and shaft parts.

1, the stator part is mainly composed of suction, middle section, spit out the paragraphs and the guide vane. Each part has a tension bolt clamping, forming a studio. Type D average pump suction, vertical vomit; Oilfield water injection, the import and export of vertical pump. DG import and export of vertical multistage pump. 2, rotor part mainly consists of shaft, impeller, balance disc and sleeve. Axial force by the balancing plate. 3, bearing is mainly composed of bearing, bearing and the bearing cover, grease or light oil lubrication. 4, multistage pump shaft seals use soft packing seal, soft packing is mainly composed of seal, packing inflow and tail water retaining ring on the cover. The pressure inside the D type water pump water from the pump water. DG pump water from an external water supply. 5, the rotation of the multistage pump pump is driven by a prime mover directly by elastic coupling.

horizontal multi-stage centrifugal pump working principle:

horizontal multi-stage centrifugal pump working principle is the motor drive for high speed rotating impeller, the impeller in the pump cavity strong centrifugal force is generated in the liquid within the impeller of the centrifugal force, under the action of the blade passage between the left to the impeller around, liquid under the effect of blade, pressure and speed will be increased, and directed toward the less level of impeller, liquid pressure increasing. Through multistage impeller centrifugal force of liquid.

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