Well Pump QGD

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Product Description:

-Pump
Capacity from 1 to 2.5(m3/h)
Total head from 50 to 100(m)

-Motor
Power:0.37 to 0.75KW
Insulation class:B
Protection grade:IP 68
Maximum diameter:?94.5
Highest temperature of liquid:35℃

PERFORMANCE TABLE:rpm:2850 Outlet:G1"
Type

Sizs

Q-H-kW

Motor
power
CapacityVoltageMax.DiaPipe.diaDimensions
KWHpm3/hmVmmlnchmm
QGD1.2-50-0.370.370.51.250220/38094.51620×140×140
1.8-50-0.500.50.71.850640×140×140
1-100-0.550.550.751.0 100 640×140×140
1.2-100-0.750.7511.2100 720×140×140
2-60-0.750.7512.560 700×140×140

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Q:Variable flow variable frequency water pump how to adjust the flow?
Variable frequency pump is mainly depending on the frequency converter to adjust the speed of the pump motor, thereby regulating the flow and lift pump, the following Q1/Q2=n1/n2; H1/H2= (n1/n2) -, the frequency range of the frequency converter in 30HZ~50HZ
Q:Pump house should be equipped with those equipment and valves
The room should be full of equipment!
Q:Water pump eliminates air
First of all, why should exhaust air, pump suction principle is the rotation of the impeller, pump water inside the throw out, and then let the inlet pipe into a vacuum. Then, under the influence of atmospheric pressure, the water pressure is pumped into the pump. Therefore, if the water is not filled, the sealing of the pump is impossible to pump the air inside the evacuation of high vacuum. In other words, do not fill the water, you can not smoke water. You can hear the noise in the pump when the water bubbles under the bottom vacuumThe water doesn't go up because it doesn't have enough vacuum!The reason 1 is because there is no water filling,2, because your pump and water vertical height higher than the pump itself suction stroke.3., the pipeline resistance is too large (including the pipe diameter is too small, elbow and so on)
Q:Water pump is not Sheung reason
The problem you are experiencing is stressThe above answer is only considered in the case of water absorptionJust imagine, two pumps are normal work, the same suction pipe, how can there be dissatisfaction with water or vacuum state?.According to my experience analysisYour system is three sets of parallel, lift and flow should be the same, if not the same, not in this discussion, the topic should be set up.Lift is the same, that is, in two or three units at the same time, the resulting system pressurization is the same, and water will increaseBut now your traffic is increasing at two units, but it will not increase at threeYou have selected pipeline system design, in the design of head flow under single condition is constant, if the increase in open water pump, the pressure is constant, increasing water content, according to the continuity equation Q = A X V, then the flow velocity in the tube will increase;But when the third pumps, 2Q becomes 3Q, normally velocity should be larger, but the Darcy formula shows that the velocity increases, extension resistance and local resistance will be increased, and the double square, so you can open third pumps for reasoning, when the resistance effect caused by the pipeline the increase of water flow in the pipeline can not be reused, the general formula of constant current, now the whole pipeline in turbulent stateThat is, third pumps to do the work in the water and pipe wall friction in the loss, and actually did not play a role in water supplyThe solution is to increase the flow rate by increasing the water supply pipeline
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
Q:What does the lift of a pump mean?
Simply from the local to the pumping pumping height calculation of rice
Q:Two pumps automatically switch start control circuit,
Can add time delay relay, the key depends on how much time the water is full, if you design is automatic, it is better to use the triode reliable,
Q:Pump frequent start will reduce the service life, I ask what kind of frequency is called frequent start?
How to define this frequently, this can only say, for example, the life of the switch is 60 thousand times, once every hour you move, it can be used for a long time, and that if you move one minute, it would not necessarily for long.Pumps frequently start the first self wear problems, as well as the impact on the pipe network, especially the soft connections.Water pump if the frequency of use or time, it is recommended to adopt: variable frequency constant pressure control.
Q:Is the motor with a pump a squirrel cage induction motor?
The motor with water pump is usually squirrel cage asynchronous motorThe squirrel cage asynchronous motor structure and single-phase asynchronous three-phase asynchronous motor of three-phase asynchronous motor motor is similar with a three-phase winding embedded in the stator slot (a single chain, single-layer concentric and cross layer structure of three kinds). The stator winding access three-phase AC power, rotating magnetic field winding current and induced current in the rotor conductor, the interaction of rotor current and air gap induction in rotating magnetic field, and electromagnetic counter (asynchronous transfer cabinet), the motor rotation.Three-phase asynchronous motor. It consists of two parts, stator and rotor. The air gap is between the stator and rotor. Rotor winding is used to generate induction potential, squirrel cage asynchronous motor, Jingjiang Ming art spring factory and produce electromagnetic torque, it is divided into squirrel cage and winding type two. Squirrel cage rotor winding is their winding short circuit, a conductor on the rotor in each slot discharge (material is copper or aluminum), than in the long core conductor, two ends of the iron core with two end ring conductor, the formation of short circuit winding. If the core is removed, the remaining windings are like squirrel cage, so it is called squirrel cage winding.Advantages and disadvantages of squirrel cage asynchronous motorsThe squirrel cage induction motor has the advantages of simple structure, easy manufacture, low cost and convenient operation and maintenance. It is widely used in industry and agriculture as the prime mover of electric drive.Its disadvantage is the poor speed performance and small starting torque, so some other types of motors are used in some situations which require smooth speed regulation and large starting torque.
Q:Domestic pump does not turn, but the motor is energized what is the problem?
This is the start capacitor is damaged, or start the coil break, it is recommended to check if the coil wire in the end can be connected, if left in the tank to replace the coil, if the capacitor is a replacement can (470V, 10uF).

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