Selection of farmland irrigation and drainage pumps
The selection of farmland irrigation and drainage pumps is a process of comprehensive consideration of multiple factors. The following is a detailed answer based on the currently available information:
Selection of farmland irrigation and drainage pumps
1. Selection of water pump type
There are three main types of farmland irrigation and drainage pumps: mixed flow pumps, centrifugal pumps and submersible pumps.
Mixed flow pump: The flow rate and head are between centrifugal pumps and axial flow pumps. It is small in size, light in weight, high in efficiency, simple in structure, easy to use and easy to maintain. It is suitable for areas with abundant surface water sources in the south, such as plains and hilly areas. The common model is the HW type mixed flow pump, which can be powered by an electric motor or a diesel engine.
Centrifugal pump: It uses the rotation of the impeller to make the water centrifugal to work. The flow rate and head can be selected in a wide range. It is the most widely used water pump in agriculture. According to different terrains, a centrifugal pump with a lower head can be selected in plain areas, a centrifugal pump with a moderate head can be selected in hilly areas, and a multi-stage centrifugal pump with a higher head can be used in high-altitude areas. Common models include IS type, ISW horizontal, B type, BA type, S/SH type double suction centrifugal pump, D/DG type multistage centrifugal pump, etc.
Submersible pump: The motor and water pump are integrated, submerged in water for safe and reliable operation. It is mainly used to pump water from deep wells, suitable for irrigation in plain areas and plateau mountainous areas where surface water is scarce such as North China. The most common model is QJ type well submersible pump.
2. Selection principles
Select the type of water pump according to the water source.
Consider the pump head and flow rate according to the irrigation area to ensure that the selected water pump can meet the irrigation needs.
Consider the economic performance of the water pump, including purchase cost, operation cost and maintenance cost.
