Submersible Axial Flow Pump

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Product Description:

Type description

Take 350QZB-50 as an example

350: the nominal diameter of the pump

Q: submersible

Z: axial flow

B: semi-adjustable blade

50: 1/10 of the pump specific speed (take the integer part)

According to different pump specific speeds, the flow capacity range of this type of axial flow pump can reach up to 700m3-1400 m3

The principle of Axial flow pump is to lifting water according to the thrust caused by the impeller when rotating. Because water moves along the axial in the impeller, so we called it axial flow pump.

In accordance with its mode of installation, axial flow pump can be distinguished into three class: vertical, horizontal, inclined. Their structures are almost the same. Now the vertical form is used widely. The main accessories contains bell-mouthed pipe, impeller, guide blade, outlet syphon, shaft and bearing, stuffing box, etc.

Summarize of QZ series Axial flow pump:

Installation of water flow Channel: in terms of recommended sample installation diagram

The form of water exit: flap valve or other ways

Installation ways: suspended by bent pipe; suspended in well casing, etc.

Motor

Submersible motor

Power Level: electrical performance conforms to GB756

Protection level: IP68

Cooling method: ICW08A41

Basic installation form: IM3013

Voltage grade: ≤355kw, voltage,380v/660v; 355kw,voltage, 380v, 660v, 6000v, 10000v

Insulation level: F

Rated frequency: 50Hz

Length of cable: 10m

Shaft seal

There are two or three stages of mechanical seal. The first stage called carborundum (directly contact with water). The second and third stage called graphite and carborundum.

Leak proof Equipment

QZ, QH series pump have been equipped with leak proof sensors. When the oil tank, the inner part of motor or the junction box has been leaked by water, the sensor will signal or made the motor shut down, and retain the malfunction signal.

Over heating protection system

A overheating protection device is fastened on the motor winding. When the temperature exceeds the stated &#118alue, the device will signal or made the motor shut down.

Rotation direction:

Seen from the top of the motor, the impeller is rotating clock wisely.

Application

QZ series axial flow pump, QH series mixed-flow pump is widely used in industry and agriculture water lifting, urban water supply, light polluted water discharge and other water transfer project.

Working condition

Clean water with the temperature no more than 50 or some liquids that are similar to water.


 

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Q:What is LG water pump?
LG pump LG refers to the name of the water pump brand, not on behalf of practical significance.LG pump is a high-rise building feed pump.1, LG, LG-B type of high-rise building water supply pump is a vertical multistage type structure, bolt the inlet section, the middle section of the water pump are fixed together, each containing a impeller and the guide vanes, the axial force of the hydraulic balance, the residual axial force by one or a pair of ball bearing;2, the shaft seal adopts special design mechanical seal, so when dismantling mechanical seal, do not need to remove the motor, the middle casing coupling can be removed from the seal, it has the advantages of replacement and convenient maintenance;3, pump transmission is through the shell coupling, vertical motor drive, from the motor side to see, the pump clockwise rotation;4, the suction inlet of the pump is below, the water outlet is above, and its relative position can be chosen according to the user's requirements, 0 degrees, 90 degrees, 180 degrees, 270 degrees for assembly, factory. General pump 180 degrees factory.5, assembly without adjustment, easy disassembly;6, the motor can be equipped with standard Y series of ordinary models.
Q:Level 200 meters distance, elevation 30 meters, how much lift water pump?
According to the horizontal distance of 10 meters is 1 meters lift, 200 meters is 20 meters and 5 meters height difference of 30 Mega elbow, pump head floating down 10%, should be about 60 meters.
Q:How many kinds of pumps are there? What are the advantages of soft start?
Soft start is prepared, hard start is not prepared, the machine suddenly can not stand! Ha-ha
Q:55KW how large is the water pump wiring?
Transmission within 100 meters, 70 square millimeter aluminum cable, or 50 square millimeter copper cable. If you exceed 100 meters, you'll have to add a number to the cable.
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:Water pump is not Sheung reason
You should look at the suction port of the pump, there is no check valve, if there is water will not flow back to the pump bodyIf the pump is not water and not bad, the main reason is that the pump does not flush water, or suction pipe into the air
Q:When the pump is connected in parallel, will the head and flow change?
2 pumps parallel, lift the same, pump head is not stacked?;Answer: the head can not be superimposed, that is, a lift and a pump, but the pumping speed (flow) is two times a taiwan.2 pumps in series, the same flow, pump head is not stacked?.Answer: the head can be superimposed, that is, the pump head is two times as much as a pump, but the pump speed is the same as that of a pump.A pump is a machine that transports liquids or pumps liquids. It will be the prime mover of the mechanical energy or other external energy transfer to the liquid, the liquid energy increase, mainly used to transport liquids including water, oil, alkali liquid, emulsion, suspension emulsion and liquid metal, but also transport liquid, gas mixtures and liquids containing suspended solids. Pump performance of technical parameters are flow, suction, lift, shaft power, water power, efficiency, etc.; according to the different principles of work can be divided into volume pumps, vane pumps and other types. Displacement pump is to use its studio volume changes to transfer energy; vane pump is to use the rotating blade and water interaction to transfer energy, there are centrifugal pumps, axial flow pumps and mixed flow pumps and other types.
Q:Is the motor with a pump a squirrel cage induction motor?
Should be a squirrel cage motor for winding asynchronous motor for high torque applications. For example, its structure and the hoist crane cage motor with different rotor loop it can slip ring external resistor. The motor rotor circuit principle know that certain external resistance can reduce the starting current, but also can improve the rotor circuit power factor and torque. The pump load does not need large torque. So it should be the squirrel cage induction motor.
Q:37KW how many contactors does the pump need to start directly?
First of all, you have to see what voltage you use If 380V then current per KW is about 2A, if it is 660V per KW at about 1.1A, then it is the starting current is 3 to 7 times for the starting current, but for the moment, 380V voltage: 37*2=74A 100A on the line, 660V voltage: 37*1.1=40.7A 63A on the line.
Q:The role of water replenishing pump in circulating system
The water loss, if the level is too much loss, circulation system will not have a negative effect, the other, needs to pay for water pump system, are generally set up a level, when the automatic water level below this post.

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