Horizontal Single-suction multistage centrifugal pump

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Horizontal Single-suction multistage centrifugal pump

1. Introduction

D, DG type pump is horizontal single-suction multistage centrifugal pump. These series pump have features of high efficiency, wide performance scope, operating safely and smoothly, lower noise and long working life and convenient to maintain etc. The product carry out the standard of GB/T5657.

2.Application

It is used to transport other liquid whose physical and chemical characteristic are similar to water. Also can tansport hot water, oil, corrosive or contain grain medium through change the marterial of pump passing parts, seal types and adding cooling system.

3. Operating conditions

Capacity range: 3.7~500 m3/h

Head range: 49~680 m

Medium temperature: D< +105°c DG: -20°c~+150°c

Notice: Use an explosion-proof motor when used in coal well.


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Q:Why does the GB/T3216 specify the pump performance tolerance as positive and negative?
Only half a year after graduation. Professional stuff is forgotten...I can't help you...
Q:A direct type pump model with the coupling type, what is the difference?
This you can Baidu ah, otherwise it is not professional staff, it is estimated that will not be too clear
Q:30kW what is the flow rate of the pump?
Estimated traffic: Q = nP/ (9.8H), =70%*30/ (9.8H), =2.14/H (m^3/s)It is estimated that the efficiency of the water pump unit n=70%, power P to kW as a unit, the head H to m as a unit, you go to check the head H is how many meters, into the formula can be considered the flow rate is how many cubic meters per second.
Q:Pump adapter belongs to the system of fire pool equipment?
Does not belong to the fire pool system! Pump adapter is mainly used for fire engines through the adapter system pressure, outdoor fire hydrant fire with one hand, one hand is to provide water for the fire truck. According to the 10~15L/S calculation of each pump adapter
Q:How to identify the motor series of pumps
With 3000 of the rated speed divided by motor, motor poles after rounding.The number of poles is two times the number of poles.
Q:When did the pump start?
The promotion of water is very important to human life and production. There are various ancient water appliances, such as Egypt's chain pump (seventeenth Century BC), China shadoof (seventeenth Century BC), Burton (Eleventh Century BC) and water (first Century ad). The famous spiral rods invented by Archimedes in the third Century BC can lift water to a few meters in a steady and continuous way, and the principle is still used by modern screw pumps.In 200 BC, the ancient Greek fire pump craftsmen invented by Kurt Siby Lucius is a kind of piston pump has the most original, the main components of a typical piston pump piston pump, but only after the steam engine was developed rapidly.1840~1850 years, the United States invented Worthington pump cylinder and steam cylinder opposite, the direct impact of the piston pump, marking the formation of modern piston pumps. Nineteenth Century was the climax of the development of piston pumps, which were already used in a variety of machines, such as water presses. However, with the rapid increase in water demand, from 1920s, the piston pumps with low speed and large flow were gradually replaced by high-speed centrifugal pumps and rotary pumps. But in the field of high pressure and small flow, reciprocating pump still occupies the main position, especially diaphragm pump and plunger pump have their own advantages and are used more and more.
Q:The role of impeller in water pump
The impeller is driven by electric motor rotation, the middle impeller creates a vacuum to vacuum at the inflow of water will be (on the surface water is continuously sucked into the impeller), then the water through the high-speed rotation of the impeller of the water discharge, play a promoting role in water.
Q:Is the pump lift horizontal or vertical?
The vertical height from the center line of the pump impeller to the surface of the water source
Q:What does the lift of a pump mean?
The pump lifts water from the surface to the highest point, such as a submersible pump working below the surface of the water. The pump head is still applied to the water level, not the water pump.
Q:Why is the water pump usually used multi-stage pumps, while the circulating pump is usually a single-stage pump?
Mainly determined by the function of the water supply pump and the circulation pump.Replenishment pump is mainly to supplement the loss of the system, so the general flow is smaller, larger head, single pump water model in a small flow situation, many are not up to the required head, can only use multi-stage pumps.Circulating pumps are generally large flow, low lift, heavy efficiency, economic operation, and hydraulic model point of view, are single-stage pumps more appropriate, especially single stage double suction pump.

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