QD,Q Series Submersible Water Pumps

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Product introduction:
QD/Q series submersible pump consists of pump, mechanical seal and motor. Pump is at the bottom part of pump,which is adopted centrifugal impeller.Motor which is monophase or triphase is at the upper part of pump and seal is used where pump and motor combine, which is a kind of double end mechanicalseal,"0" rings are applied to all static joints.

Application:
The motor pump is adopted multistage impellers, and has advantage of high head, which is widely used in countryside and industry for elevating water from well, irrigation, sprinkling and tower water supply, and also used in draining off water for building sites.

Work Conditions:
The pump can work properly and continuously under following op¬erational conditions:
1.Medium is not corrosive. Sand contents should be max.0.10% by volume and granular size should be max.0.20mm.
2.Medium temperature shouldn’t be over 40℃ and PH should be
6.5-8.5.
3.The pump should be operated within rated head. The pump should be min.0.5m over the water bottom and not be inserted into sludge.
4.Power frequency should be 50Hz,single phase voltage 220V ， three-phase voltage 380V,and voltage fluctuation should be 0.9-1.1 times than the rated.

Q:Troubleshooting of diaphragm pump: In the application of the pump, these conditions are likely to encounter. Each situation can be divided into several possible reasons. This guide lists the causes of failures and gives appropriate corrective maintenance measures. The meaning of all the specific terms in the guide is listed later.Air valves - copper or stainless steel valves are bolted to the center of the pump by four bolts.The piston aluminum cylinder is enclosed in the air valve to control the gas flow.Cavitation - because the pump inlet for the amount of fluid to reduce or lack, the pump discharge is less than the amount of quantitative. In fact, the fluid chamber is full of fluid before it is discharged.Static pressure drop - the inlet pressure from the pump centerline to the free point - the inlet is measured in pounds, including the specific gravity and velocity of the fluid.

Q:What is a water pump coupling device?: Advantages of water pump coupling device:1. automatic coupling device, easy installation and maintenance. In the absence of automatic coupling device, fixed installation, such as water pump failure, maintenance personnel need to unscrew screws, lifting pumps for maintenance, or with other small pumps pumping water perfect maintenance,If the water is dirty, it is difficult for people to get down, when the inspection and repair encountered great difficulties. But it is equipped with GAK submersible sewage pumpAfter the automatic coupling device needs lifting, the person can directly lift the water pump without the need to screw the screw into the waterAfter graduation, down the guide rail, you can realize the sealing of water pump and pipeline, so as to make the pump run normally. Small sewage pumps are freeInstallation, large sewage pumps are generally equipped with automatic coupling device, automatic installation, installation and maintenance is very convenient.

Q:Why can't the centrifugal pump pump the vacuum?: Characteristic equation of centrifugal pumpStudy the effect of fluid on centrifugal pump to obtain energy.The experimental condition of u is that the ideal fluid of unit weight bends the flow between blades at infinity.U investigated the mechanical energy balance of the fluid between the adjacent two inlet and outlet sections, that is, the relationship between theoretical pressure head and theoretical flow.

Q:What are the main performance parameters of the pump?: The amount of liquid supplied by a pump in unit time. Volume flow Q, unit m3 / s. There is mass flow G, unit is kg / s.

Q:Significance of water pump model ISO50-160: Meaning of water pump model ISO50-160: ISO- stands for international standard code (IS). 50- indicates that the inlet diameter of the pump is 50 mm (the complete model IS50-32-160 32- indicates that the outlet diameter of the pump is 32 mm). 160- represents impeller diameter.

Q:Why should the pump be closed when the centrifugal pump is started?: On the other hand, the water on the pipe of the inlet pipe of the pump is stationary before the pump is opened, such as the sudden acceleration, and the water behind it can not keep up, which will cause the pressure of the inlet to drop suddenly and vaporize the water, and the centrifugal pump will be evacuated. (because of the centrifugal pump is rotating centrifugal force generated by the pump, leaf water and steam driven (gas) quality is very light, according to F= Ma, the centrifugal force is small, the pump can not be water sent).

Q:If you use an ordinary 15W submersible pump, put it in the tank, if the leakage, the fish will hang it?: What will happen then? The aquarium glass is an insulator. The water in the fish tank has the same potential as the live wire, and the fish is like a bird standing on the fire line. No electricity flows through their bodies, so they won't get electrocuted. But if you put your hands into the water, you will get an electric shock, because the line voltage through the water, then your body and the earth to form a loop, current flowing through your body you will get (of course, if you stand on the insulator does not get an electric shock)

Q:Filter backwash pump for what use, what is the principle of work ah?: When the filter is in normal operation, the impurity will be trapped in the upstream of the filter (filter medium). As the accumulation of impurities, the filter media will be blocked, and the direct performance is that the circulation will decrease. Usually, when the flow drops to a set point (the industry is usually judged by the pressure drop),

Q:I live on the 8 floor. Often there is no water. Life is very inconvenient. What kind of pump do I have to install? What should I pay attention to when I buy it? What's the pump for that brand? Should it be installed in that position?: (8) check the suitability of the foundation and whether the size of the foundation corresponds to the size of the pump.(9) find the position of positive pump and motor, pump set and anchor bolt and the inlet and outlet flanges, to ensure that the flange torque of the pump conforms to the standard. Check the inlet and outlet piping before alignment. Make sure the weight of the inlet and outlet pipe does not exert force or torque on the pump. When looking for, should also pay attention to eliminate the pump rotor movement, so as to avoid the end gap error. If checked after the pump is working, it should be carried out under cold condition. It is important to draw attention to the fact that the pump set of the complete set of factory is only rough looking (checked with a ruler) when it is shipped. It may cause displacement when it is transported.

Q:What's the difference between a centrifugal pump and a centrifugal pump? What are they used for?: As the name suggests, centrifuges are machines that achieve centrifugal effects by centrifugal action. And you say the centrifugal pump is only specific, and the same as the pump

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