Centrifugal pumps are simple in structure, easy to use and maintain, and have high efficiency. They are widely used in agriculture and other fields. However, sometimes there will be a failure of no water supply. The technicians of Shenlong Pump Industry analyzed and learned that the main reasons are:
1. The speed of the centrifugal water pump is too low
(1) Mechanical failure of the pump itself. The impeller and the pump shaft fastening nut loose or the pump shaft is deformed and bent, causing the impeller to move too much, directly rubbing against the pump body, or bearing damage, which may reduce the speed of the pump.
(2) The transmission belt is worn. Many large-scale centrifugal pumps use belt transmission. Due to long-term use, the transmission belt is worn and loosened and slipped, thereby reducing the speed of the pump.
(3) Human factors. A considerable part of the users arbitrarily equipped with another motor to drive because the original motor was damaged, resulting in the consequence of small flow, low lift or even no water supply.
2. There is air in the pump body of the centrifugal water pump
The packing of the water pump has been worn out due to long-term use or the packing is too loose, causing a large amount of water to be ejected from the gap between the packing and the shaft sleeve of the pump. As a result, the external air enters the inside of the pump from these gaps, which affects the lift. water.
3. There is air in the inlet pipe of the centrifugal water pump
(1) There are cracks in the elbow of the inlet pipe, and there is a tiny gap between the inlet pipe and the water pump, which may cause air to enter the inlet pipe.
(2) Some users have not filled enough water before the pump is started. Sometimes it seems that the filled water has overflowed from the vent hole, but the pump shaft is not turned and the air is completely discharged, resulting in a little air remaining in the water inlet pipe.
(3). Due to long-term potential underwater, the pipe wall has corroded holes, and the water surface drops continuously after the pump is working. When these holes are exposed to the water surface, air enters the civil water inlet pipe from the holes.
Post time: 2021-11-30
