There is air in the inlet pipe of the water pump and the pump body, which makes it impossible to pump water. Let's follow the editor of UAZ Water pump to learn more about it!
1. 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 rotated and the air is completely discharged, causing a little air to remain in the water inlet pipe or pump body.
2. The horizontal section of the inlet pipe that is in contact with the water pump should have a downward slope of more than 0.5% against the flow direction. The end connected to the inlet of the water pump is the highest, not completely horizontal. If it is tilted upwards, air will remain in the water inlet pipe, which reduces the vacuum in the water pipe and the water pump and affects water absorption.
3. The packing of the water pump has worn out due to long-term use or the packing is too loose, causing a large amount of water to be sprayed from the gap between the packing and the shaft sleeve of the pump. As a result, external air enters the interior of the water pump from these gaps, affecting To lift water.
4. Due to long-term potential underwater, the pipe wall has corroded holes, and the water level continues to drop after the pump is working. When these holes are exposed to the water surface, air enters the inlet pipe from the holes.
5. 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.
The above is the story of the editor of UAZ Water pump: a brief introduction to relevant knowledge about water pumps.