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Multistage pump

A multistage pump is a pump that has two or more impellers. They can absorb water and press water in multiple stages , so that the water can be raised to a high position. High head can be reached by adding or reducing the numbers of impeller. Features 1. The multi-stage centrifugal pump is a vertical structure with a small footprint. The center of gravity of the pump coincides with the center of the pump foot, so the operation is stable, the vibration is small, and the service life...

Corrosion resistant multistage pump

Corrosion type of corrosion-resistant multistage pump 1. Stress Corrosion Stress corrosion refers to a type of local corrosion caused by the combination of stress and corrosive environment. Stress corrosion is more likely to occur in C1-media. As the Cl- content, temperature and stress rise, the stress corrosion is more likely to occur. Generally, stress corrosion does not occur below 70--80 °C. Measures to prevent stress corrosion of corrosion-resi...

What are the differences between horizontal multistage pumps and vertical multistage pumps?

The appearance is different: the vertical multistage pump is standing, while the horizontal multistage pump is lying horizontally. The connection mode is different: the vertical multi-stage pump is superposed and connected from bottom to top, the horizontal pump is arranged vertically on the base, and the vertical multi-stage pump is called a pipeline pump such as a vertical pipeline centrifugal pump, and the motor and the pump body are connected by a sub-port; The pump is connected to the moto...

How to choose and distinguish between vertical multistage centrifugal pump and horizontal multistage centrifugal pump?

The difference between a vertical multistage centrifugal pump and a horizontal multistage centrifugal pump is that one is standing upright and the other is lying horizontally. The main difference between a horizontal multistage centrifugal pump and a vertical multistage centrifugal pump is that the water inlet and the water outlet are different. The horizontal multistage centrifugal pump has horizontal inlet and horizontal outlet, and the vertical type has horizontal inlet and vertical outlet. ...

What is the difference between mine wear-resistant multistage pump and ordinary multistage pump

Mine wear-resistant multistage pump and ordinary multistage pump is a multi-stage centrifugal pump, if it is used in mine drainage, usually choose mine wear-resistant multistage pump model, then, mine wear-resistant multistage pump and ordinary multistage pump what is the difference? Changsha Zhonglian Pump industry for you to summarize the following differences between the two: 1、material: The material of the mine wear-resistant m...

Multistage centrifugal pump opertaional process

Multistage Centrifugal Pump Operation Process   1.1. Check before starting multistage centrifugal pump 1.1.1 Before starting the pump, check whether all bolts, pipelines and instrument leads are tightly connected. 1.1.2 Check all instruments, valves and instruments are normal. 1.1.3 The multistage pump shaft must be turned by hand before starting, feeling flexible. 1.1.4 Check whether the steering of the motor is consistent with the multistage pump. 1.1.5 Before starting the pump, wa...

Multistage centrifugal pump working principle

Generally speaking, the multistage centrifugal pump has a plurality of impellers mounted on the same pump shaft, and the outer side of the impeller is a liquid guiding device and a pump casing. However, how to install the impeller group in the pump body or remove it from the pump body? There are two ways to do this. One is to divide the pump body and the flow guiding device horizontally along the axis of the pump shaft so that it becomes the upper and lower parts. It is called a horizontal split...

Stages of the multistage pump

Multi-stage pump, if you have seen the appearance, you will find that the multi-stage pump is composed of many stages. After dismantling the pump, you find that there are multiple impellers inside, which are connected in series to a shaft. This is a multi-stage pump. Multi-stage pumps are simply a series of single-stage pumps that are built together, which the discharge pressure can be very large. When water is supplied to a high pressure boiler, it is difficult if you do not use a multist...

Explosion-proof multistage centrifugal pump

The mining multi-stage centrifugal pump and the wear-resistant explosion-proof centrifugal pump are described in detail as follows: Mining multi-stage centrifugal pump, wear-resistant explosion-proof centrifugal pump: The DM type multi-stage centrifugal pump is suitable for water supply and drainage in mines, factories and cities. It is used to transport clean water without solid particles or liquid with physical and chemical properties similar to clean water. The temperature of the medium to ...

Multistage centrifugal pump maintenance steps

When the multi-stage centrifugal pump is not working properly and needs to be disassembled for maintenance, please follow the steps below. When conditions permit, it is best to consult the manufacturer's instructions to see what special areas need attention. A. The multistage centrifugal pump disintegration 1. Before the thrust bearing is removed, the balance plate should be measured by the dial gauge, and the record should be made; ...

Self-balance multistage pump structure description

Structure Description   Self-balance multistage centrifugal pump is supported at both ends, and the casing is segmented. The transmission mode of the pump is connected to the motor through a pin elastic coupling. The direction of rotation of the self-balance multistage pump, viewed from the drive end, the pump rotates clockwise. The structure of the self-balance multistage pump is shown as below        Stator part   It is mainly composed of suction secti...

Self-balance multistage pump's installation steps

Installation of the self-balance multistage pump   The installation steps of the self-balance multistage pump generally include placing the pump on the foundation to find the level and the pipeline connecting the pump.   In addition to the general installation requirements, pay attention to the following two points when installing this type of pump:   a) A gap of 3 to 5 mm must be ensured between the motor coupling and the pump coupling.   b) The axis line of the ...

self-balance multistage pump 8 features

Self-balancing multistage centrifugal pumps are the best alternative to ordinary multistage centrifugal pumps. This series of products has a wide high-efficiency area, good cavitation performance, stable operation, fewer wearing parts, greatly improved reliability, and greatly reduced user maintenance costs, thereby reducing the life cycle cost of the pump.     1. Efficient and energy-saving Adopting advanced hydraulic model, independently researching and developing high-efficien...

Common problems of multistage centrifugal pump maintenance

Common problems of multistage centrifugal pump maintenance     Brief description of common problems in maintenance of multistage centrifugal pumps:1. The problem of starting with load If the multi-stage centrifugal pump has vacuum at its suction port or pressure at its exhaust port before starting, another technical parameter of the multi-stage centrifugal pump must be considered: the maximum starting load of the intake port Pis Value, the maximum starting load Pos value of the exha...

Pump Curve | Multistage Pump| Model: 280-43x11

Pump curve & specifications for multistage pump model:D/MD/DF/DY280-43&times;11P   Pump Type:self-balancing multistage pump Pump Model:D280-43&times;11P/MD280-43&times;11P/DF280-43&times;11P/DY280-43&times;11P Pump Flow rate(rated):280 cubic meters per hour Pump Head(rated):473 meters Pump Speed:1480 r/min Pump Efficiency:73% Shaft power:493.9kw Motor power:630kw NPSHr:4.7meters Impeller diameter:360mm Pump Weight:3495 kg    

Pump Curve | Multistage Pump| Model: 280-43x10

Pump curve & specifications for multistage pump model:D/MD/DF/DY280-43&times;10P   Pump Type:self-balancing multistage pump Pump Model:D280-43&times;10P/MD280-43&times;10P/DF280-43&times;10P/DY280-43&times;10P Pump Flow rate(rated):280 cubic meters per hour Pump Head(rated):430 meters Pump Speed:1480 r/min Pump Efficiency:73% Shaft power:449kw Motor power:560kw NPSHr:4.7meters Impeller diameter:360mm Pump Weight:3276 kg    

Pump Curve | Multistage Pump| Model: 280-43x9

Pump curve & specifications for multistage pump model:D/MD/DF/DY280-43&times;9P   Pump Type:self-balancing multistage pump Pump Model:D280-43&times;9P/MD280-43&times;9P/DF280-43&times;9P/DY280-43&times;9P Pump Flow rate(rated):280 cubic meters per hour Pump Head(rated):387 meters Pump Speed:1480 r/min Pump Efficiency:73% Shaft power:404.1kw Motor power:185kw NPSHr:4.7meters Impeller diameter:360mm Pump Weight:3057 kg    

Pump Curve | Multistage Pump| Model: 280-43x8

Pump curve & specifications for multistage pump model:D/MD/DF/DY280-43&times;8P   Pump Type:self-balancing multistage pump Pump Model:D280-43&times;8P/MD280-43&times;8P/DF280-43&times;8P/DY280-43&times;8P Pump Flow rate(rated):280 cubic meters per hour Pump Head(rated):344 meters Pump Speed:1480 r/min Pump Efficiency:73% Shaft power:359.2kw Motor power:450kw NPSHr:4.7meters Impeller diameter:360mm Pump Weight:2838 kg    

Pump Curve | Multistage Pump| Model: 280-43x7

Pump curve & specifications for multistage pump model:D/MD/DF/DY280-43&times;7P   Pump Type:self-balancing multistage pump Pump Model:D280-43&times;7P/MD280-43&times;7P/DF280-43&times;7P/DY280-43&times;7P Pump Flow rate(rated):280 cubic meters per hour Pump Head(rated):301 meters Pump Speed:1480 r/min Pump Efficiency:73% Shaft power:314.3kw Motor power:400kw NPSHr:4.7meters Impeller diameter:360mm Pump Weight:2619 kg    

Pump Curve | Multistage Pump| Model: 280-43x6

Pump curve & specifications for multistage pump model:D/MD/DF/DY280-43&times;6P   Pump Type:self-balancing multistage pump Pump Model:D280-43&times;6P/MD280-43&times;6P/DF280-43&times;6P/DY280-43&times;6P Pump Flow rate(rated):280 cubic meters per hour Pump Head(rated):258 meters Pump Speed:1480 r/min Pump Efficiency:73% Shaft power:269.4kw Motor power:315kw NPSHr:4.7meters Impeller diameter:360mm Pump Weight:2400 kg    

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