What are the benefits of closed impellers for water pumps

The main structure of the water pump is composed of motor, pump casing, impeller, pump shaft, bearing, coupling, sealing device, etc. Different parts have different functions. For example, the impeller is the main executive part, which generates centrifugal force to lift the medium through high-speed rotation. What are the benefits of closed impellers for water pumps? The closed impeller has high operating efficiency and can run smoothly for a long time. The axial thrust of the pump is small, but the closed impeller is not easy to transport sewage media containing large particles or long fibers. For fire pumps, deep well pumps and submersible pumps, the use of clean water centrifugal pumps is very convenient, and the material selection is wide, cost-effective, and it is very convenient for long-term use, inspection and maintenance.

Long shaft deep well pumps, electric motor fire pumps, diesel engine fire pumps, stainless steel submersible pumps and other equipment generally use closed impellers. If customers have special requirements, they will use other types of impellers. Choose a suitable pump manufacturer to help you choose, Choose the material, then the installation and maintenance work, and then the maintenance work of the pump. These contents seem to be unimportant but can affect the normal use of the pump, so users must understand the relevant precautions.

The pump is equipped with a suitable motor to start normally and to ensure that the pump has sufficient power. The brand and performance of the motor are very important. Long-term operation of the motor requires regular inspection and maintenance, otherwise it is easy to cause a phase loss when the motor is running. Before starting the pump, you should also do a good job of checking the power of the motor, starting and running, the appearance of the pump body and the running condition of each part. What is the reason for the abnormal operation of the motor equipped with the water pump?

If one phase is suddenly missing during the operation of a three-phase asynchronous motor, the speed of the motor will quickly decrease. At this time, the stator winding current of the motor will also increase a lot, and at the same time it will make an abnormal sound of "humming". Under the circumstances, the motor can not run for a long time, otherwise the three-phase motor will be burnt. In a large number of maintenance cases, it is common that the wiring screws in the motor junction box are loose; secondly, the connection points in the three-phase power circuit are loose or oxidized. For example, the contacts of some contactors are poorly contacted or the contact resistance is large, resulting in the power supply. Lack of phase; there is also the fuse in the fuse is broken or not fastened, etc.

Everyone uses the water pump because of its performance. If it fails, it will affect the use. In serious cases, it needs to be repaired or replaced. In order to avoid this situation, we can do more inspections and do one more step before starting to avoid common problems. Reduce failures.

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