Key Questions to Ask When Ordering Brushless Dc Pump Manufacturers

Before running the brushless DC water pump , it need to fill the pump chamber with water to eliminate the air in it. After connecting the DC power supply to start the water pump motor, the motor controller controls the direction and magnitude of the current to generate a rotating magnetic field between the permanent magnets and windings on the rotor, which in turn drives the permanent magnets (rotor) to rotate. The impeller on the rotor begins to rotate at high speed with the rotor under the action of electromagnetic force, thereby driving the water between the blades to rotate at high speed with the blades. The impeller rotates at high speed to produce centrifugal force on the water. At this time, the water is thrown out from the center of the impeller and obtains kinetic energy. At the same time, it leaves the outer edge of the open impeller at a high speed and then enters the pump head volute.

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In the volute of the pump head, due to the bending and elongation of the flow channel, the speed of the water is reduced and the kinetic energy is converted into pressure energy, and the water is pushed into the drain pipe by high pressure. Since the impeller continues to operate along with the motor, a negative pressure is generated in the pump chamber, so water is continuously sucked into the pump chamber under the action of atmospheric pressure, and then continuously discharged out of the pump chamber and pump casing through the work of the impeller. This is How the brushelss dc pumps working principle.

Brushless motor DC water pump is mainly composed of brushless DC motor, impeller, pump shell and pump chamber. The shaft of the motor is connected to the impeller. As there is a gap between the stator and the rotor of the motor, there is a possibility that water can penetrate into the inside of the motor when the water pump is working for a long time. In this cae it increases the possibility of short circuiting the windings and causing damage to the motor. However, the cost of this type of water pump is relatively low and the efficiency is high.

Unlike brushed DC motors that rely on carbon brushes for commutation, brushless DC motor use circuit programs or electronic components for commutation, so, there is no problem of carbon brush commutation wear which lead to a greatly limited working lifespan. Therefore, working lifespan of brushless DC water pump is much longer than that of the brush motor water pump and the brushless motor water pump. And as the stator part and the rotor part are completely isolated, also the stator and circuit board parts are potted with epoxy resin, pump’s waterproof performance is very high and can be used as a submersible pump. At the same time, the brushless DC pump also has the characteristics of low operating noise, small size, high efficiency, stable performance, adjustable parameters, and wide voltage operation,etc.

If you find a fault with the water pump when using it, you should eliminate it in time and do not let the pump work “sickly”. For example, when you find that the water pump bearings are severely worn, you should replace the bearings in time, otherwise the water pump will consume too much energy and cavitation will occur, which will accelerate the damage of the impeller and directly affect the working lifespan of the water pump. For another example, if you find the pump vibrating violently, you should stop it immediately for inspection. And you should replace the shaft in time, if you find it is deformed.

With competitive price and timely delivery, Power Jack Motion sincerely hope to be your supplier and partner.

Due to the many advantages of brushless DC water pumps, especially the very high reliability, it is generally difficult for brushless DC water pumps to fail except for use failures caused by congenital manufacturing defects. However, if the operator does not follow the usage conditions and correct usage methods of the water pump provided by the manufacturer, and operates the water pump illegally, it is likely to cause the water pump to malfunction. So how to repair the water pump when such a malfunction occurs? Let we explain to you one by one:

Maybe the internal seal of the pump head is damaged or the filter is not installed. At this point, it is necessary to replace the internal seal of the pump head or reinstall the filter.
It should be noted that safety operating procedures should be followed to ensure that the power is disconnected. In addition, if the cause of the fault cannot be determined or cannot be repaired, professionals should be contacted for repair.

You should remove all the screws and clean them with a wire brush, and lubricate them before installation on the pump to prevent the screws from rusting, when the brushless DC pump is not used for a long time. By doing so, prevents the screws from rusting and cannot be removed when the water pump is not used for a long time. This will also cause the pump head cover to be unable to be opened to repair the pump when the water pump’s sealing ring or shaft or impeller fails.

 
How to choose the water head of a brushless dc pump for your application?

If you want to learn more, please visit our website Brushless Dc Pump Manufacturers(ar,de,ru).

First of all ,The so-called water head of a brushless dc pump is the required water head, not the lifting height, knowing this is particularly important to choose a brushless dc water pump. Pump water head should be around 1.15 to 1.20 times than that of the lifting height. For example, the required lifting is about 23 to 24 meters if the water source is 20 meters vertical height to the water using place. It is suggested that you’d better choose a pump with a water head on the pump nameplate close to the required water head. In this case, pump will highest efficiency work and more economical. However it does not necessarily to be absolutely equal ,since the brushless dc pump can also be more energy-efficient work as long as the general deviation is not more than 20%.  Second, Generally speaking ,user's requirements can not be meet when a water head on the nameplate far less than the required head of a brushless dc pump is chosen that because of the water will be pitifully small even if water can be pump , and even become a useless "free pump" . Is it the water head chosen for a brushless dc pump the more higher the more better? Actually not, since exceed water flow will be happened when a High-lift pump works for low lifting ,it will result in motor overload, and the motor temperature will raise up a lot if working in this condition for a long time also the winding insulation will gradually Aging, even burning the brushless dc pump motor.
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