Why do we need to conduct irrigation and water diversion work before starting the multi-stage centri

The multi-stage centrifugal pump for mining mainly relies on centrifugal force to press a certain amount of liquid out of the impeller to form a local vacuum. The liquid is sucked into the pump under the action of local pressure difference and forms a continuous flow. If there is air in the pump body, due to the light weight of the air, the centrifugal force is small, which affects the vacuum degree at the water inlet of the pump and reduces the suction performance of the pump. Therefore, it is necessary to divert water to fill the pump and eliminate the air inside the pump, Next, Hunan Zhongda Pump Industry will explain to you why it is necessary to conduct irrigation and water diversion work before starting the multi-stage centrifugal pump.


The reason for conducting water injection and diversion work before starting the multi-stage centrifugal pump used in mining:


1. Before starting, the mining multi-stage pump conducts water diversion and fills the pump body with water, which can eliminate air inside the pump and ensure water output, which is beneficial for improving the operating efficiency of the pump.


2. If the water pump fails to conduct water diversion and irrigation in a timely manner, it is easy to cause an increase in the temperature of the transported medium, leading to vaporization of the medium and ultimately causing cavitation.


3. The use of water pumps for irrigation and diversion can also prevent centrifugal pumps from experiencing "gas binding". If the water pump experiences "gas binding", it cannot transport liquid and the water pump cannot function properly.


4. If the density of air is less than the density of the medium being transported, the centrifugal force generated is small, and the vacuum formed at the water inlet is low. Only by injecting water can the liquid be better sucked into the pump.


5. If the air in the pump body and pipeline is not completely discharged, then the pump is not vacuum and cannot absorb water. Therefore, before starting the pump, it is necessary to fill the pump and pipeline with liquid, and remove the air before water can be extracted.


6. If the water pump is not filled with water before starting, the impeller only drives the air inside the pump to rotate. Because the weight of the air is very small, the centrifugal force generated is too small to completely exhaust the air inside the pump and pipeline, that is, a vacuum cannot be generated inside the pump, so water cannot be sucked in.


In summary, the above is the reason why Hunan Zhongda Pump Industry introduced to users the irrigation and pumping work of mining multi-stage pumps before starting. From this, it can be seen that the main purpose of water pump irrigation and pumping is to eliminate air inside the pump, avoid cavitation and gas binding, and ensure that the pump can transport the medium normally after starting. If you have any doubts, please feel free to consult us online.