How to buy agricultural water pump

In recent years, with the adjustment of agricultural structure, farmers have made full use of low-lying gentle slopes and barren beach resources to develop high-efficiency agriculture on a large scale, but these plots are often difficult to irrigate. Need to buy a pump to raise water for irrigation. So, how to choose the right agricultural water pump? The following is for the reference of farmers.

First of all, it is necessary to purchase a water pump according to local conditions. There are three types of commonly used agricultural water pumps, namely centrifugal pumps, axial pumps and mixed flow pumps. The centrifugal pump has a high lift, but the water output is not large, and it is suitable for mountainous areas and well irrigation areas. The axial flow pump has a large water output, but the lift is not too high, and it is suitable for use in plain areas; the water output and head of the mixed flow pump are between the centrifugal pumps. Between the axial flow pump and the axial flow pump, it is suitable for use in plains and hills. Users should purchase according to local conditions, water source and water lifting height.

Second, it is necessary to properly select the pump. After determining the type of pump, it is necessary to consider its economic performance, paying particular attention to the choice of the head and flow of the pump and its supporting power. It must be noted that the head (total head) indicated on the pump plate is different from the water head (actual head) in use, because there is a certain resistance loss when the water flows through the water pipe and the pipeline. Therefore, the actual lift is generally 10%-20% lower than the total lift, and the amount of water is also reduced accordingly. Therefore, in actual use, it can only be estimated from 80% to 90% of the head and flow rate of the sign. The choice of pump power can be selected according to the power indicated on the sign. In order to make the pump start quickly and safely used, the power machine The power can also be slightly larger than the power required by the pump, generally about 10% higher; if there is power, when purchasing the pump, you can purchase the matching pump according to the power of the power machine.

Finally, it is necessary to purchase water pumps strictly. When purchasing a water pump, it is necessary to check the "three certificates", that is, the agricultural machinery promotion license, production license and product inspection certificate. Only the three certificates are complete to avoid the purchase of obsolete products and inferior products. (Cai Cui)