DL Vertical Multistage Centrifugal Pump

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Product Description:

1. APPLICATION

1) Applies to municipal water supply and pressurization

2) Water supply of factory

3) Water supply of refrigerating system and cooling system of heating system of air conditioner

4) Supply of firefighting sprinkler system

5) Applies to divisional firefighting water supply of high rise building

2. FEATURES:

1). DL multi-stage pipeline centrifugal pump is a new generation product designed and made by our company on the basis of the excellent pump types both domestic and overseas;

2) The pump conforms to standard of " Technical Specificaton for Centrifugal Pumps-ClassIII" GB/T5657;

 

3) The multistage centrifugal pump adopts the motor with IP55 protection class and F Insulation class, the motor with the features of low noise, high torque and better starting performance;

3). The vertical multi-stage pump has less land area, high efficiency, nice appearance, light weight and small noise at running;

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Q:2 inches of water pump is generally equipped with high-power motors
Clean water pump 5.5 kw
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:Relationship between power and flow of sewage pump
If you simply want a formula that satisfies your everyday application, the following will meet the requirement:N= y QH/1000,The severe gamma liquid, cattle - ETA / m3; efficiency; N- kW; H- head, power meters;Q- volume flow per cubic meter / second; divided by 1000 is the change of power W to kW;Attachment: gravity is the density of an object multiplied by gravity. Acceleration is expressed as a force in terms of the weight of a unit;The formula is applicable to situations where the calculation is not high and applicable to any liquid known or known to be heavy;The formula is reduced to three simplifications:1, ignoring the pump impeller, shaft and other friction losses;2, ignore the pump flow loss;3, ignore the pump pipe, as well as mechanical heat loss;As a result of the above three loss in the process, material, liquid delivery the same condition can be simplified as a coefficient, then adjust the ETA - efficiency coefficient, can satisfy the application value.The deduction principle of this formula is relatively simple, and the mechanical work of the pump is considered to be transferred to the mechanical energy of the liquid completely;That is, N= gamma QH, at this time, all the mechanical energy that water possesses;Electrical and mechanical energy conversion efficiency exists, then divided by the conversion efficiency ETA is obtained;N= y QH/1000;Special attention is needed. - though the efficiency represents the input electric energy and water energy ratio; but the relationship between the two have many effects, the structure of pump, pump body, liquid material feeding. If the above formula is used to estimate, it should be revised according to the actual situation.
Q:What kind of water pump does the 5.5KW motor have?
Model has: QS-250-40-21, lift 21m, flow 40 square, motor power is 4KW, water pump diameter is 232cmQJ-200-40-26, lift 26m, flow 40 square, motor power is 5.5KW, water pump diameter is 189cmYou can choose the right pump according to your well path.
Q:How do I calculate the power of the pump?
A 15kw pump, know how to calculate the head pumping water for an hour (if the head is 10 meters)Lift: MFlow rate: kg / sec (general water pump is cubic / hour, if 10 cubic hour / hour: 2.7 kg / sec)Efficiency: average 60%15000/102*0.6=88 kilograms per second88/10=8.8 kg / sec8.8*3600=31680 kg / h=31.6 cubic / hour
Q:Is the pump lift horizontal or vertical?
A vertical, vertical lift is one meter (see environment), usually 5~10 times the horizontal distance
Q:How much is the flow rate of fire hydrant and spray shared water pump?
Fire fire water is superimposed, at the minimum, the lowest 5L/S automatic spraying fire hydrant, light danger level 13.9L/S, the least is 18.9L/S, but the data is useless, the data are not spraying fire hydrant, concrete analysis of high-rise buildings like the dangerous level according to the calculation, the general design, the concrete building needs the high-rise building minimum 20L/S, automatic spraying dangerous level according to the general 30L/S, 50L/S need to flow.Fire hydrant: fire hydrant (English Name: fire hydrant), a stationary fire fighting tool, with 4 iron chains. Fire hydrants are provided throughout the city to provide fire water for firefighters during the rescue. The main function is to control fuel, insulate combustion and eliminate fire source. The fire fighting system includes outdoor fire hydrant system, indoor fire hydrant system, fire extinguisher system, and some automatic sprinkler system, water gun system, gas fire extinguishing system, fire detection system, water mist system and so on. Hydrants are mainly fire engines from the municipal water supply network or outdoor fire water supply network to implement fire fighting, but also can directly connect hoses, water cannons, fire extinguishing. Therefore, the outdoor fire hydrant system is also one of the important fire fighting facilities.
Q:After the pump has a control box, but also the distribution box?
This look at the specific situation, the water pump circuit is divided into power, power and control signal two parts,They can be placed in a larger cabinet, which is convenient for future inspection and repair.There is power and signal is separated from the general distribution box and put some air contactors, frequency converter etc.,There are some buttons, lights, etc. in the control box.
Q:Pump frequent start will reduce the service life, I ask what kind of frequency is called frequent start?
Personally think that the quality of different motors have different effects on the motor, you can try, try a minute it ruined his frequency is a / S
Q:Diving pump voltage
Absolutely not, because 220V is not the same as the 380V waveform. Submersible pump single-phase motor is generally single-phase capacitor motor. The working principle is different from that of the single-phase 380 motor. If the power capacity is enough, it is recommended that you increase the wire (you can buy a line and go to use, to avoid waste), preferably with copper wire.

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