Agricultural Small Water Pump Common Faults and Its Maintenance and Adjustment Method
Water pump plays an important role in agricultural production. Generally, small water pump is used. It is necessary to maintain the small water pump in use, it will affect the performance of the water pump when it has faults, so it is very important to maintain the small water pump.
Common faults of small water pump and their maintenance and adjustment methods are as follows:
1. The stator decay. The cause of the stator decay is generally poor installation, water pump used for a long time and too small air gap between stator and rotor.
(1) In order to prevent the stator from decay, in the installation process, the installer must check whether the stator and rotor contact. In addition, it is necessary to check whether the lubricant oil is qualified regularly and to eliminate water from the bearing chamber.
(2) As for the stator decay that has already occurred, it needs to be re-insulated and adjusted the air gap. Firstly, the motor should be disassembled and the insulation of the stator should be repaired or replaced, then reassemble and adjust the air gap of the stator and rotor.
2. Bearing damage. The cause of bearing damage is mainly poor lubrication or oil pollution, or direct water seepage.
(1) To prevent bearing damage, the oil used in the bearing should be qualified and timely lubrication should be added.
(2) If the bearing is damaged, it should be replaced in time. Before replacing the bearing, the users of the water pump should check the model, specification, structure and size of the bearing, and the bearing replacement should be checked in time after use.
3. Cavitation erosion. Generally, cavitation erosion is caused by the reduction of pressure of water pump working conditions and the superposition of impact pressure of pulse flow.
(1) In order to prevent cavitation erosion, attention should be paid to check and adjust the water level, reduce the head demand and strengthen the sealing at the inlet of the water pump.
(2) For cavitation erosion that has already occurred, it is necessary to clean up the cavitation and cavitation scar on the running parts of the water pump, and replace the damaged parts in time.
4. Leakage of water pump. Leakage of water pump is mainly caused by poor sealing.
(1) In order to prevent the leakage of water pump, it is necessary to install the water pump correctly, choose the right size of seal and pay attention to the combined test of the water pump and the pipe joint after the installation is finished.
(2) For the leakage of water pump that has already occurred, it is necessary to find out the cause of the leakage, then repair or replace the seal and pay attention to the combined test.
In summary, small water pump is a precise structure, and it needs regular maintenance and repair in use. Generally, the maintenance is to adjust and adjust the mechanical parts of the water pump and replace the damaged parts, so that the water pump can work normally and ensure the efficient use of the water pump.
