Characteristics and applicable conditions of various types of pumps

 Centrifugal pump is a centrifugal force generated by the rotation of the impeller to pump the water into the impeller, according to different ways, can be divided into 2 kinds of single suction and double suction. According to the number of impeller installed in the pump shell can be divided into 2 types of single and multi-stage.  

Single stage single suction centrifugal pump has the characteristics of high head and small flow rate, simple structure and convenient use etc.. Because the pump outlet direction can be adjusted according to need and so on, is suitable for large-scale irrigation hilly and mountainous areas.  

Single stage double suction centrifugal pump with high lift and flow than the single-stage single suction centrifugal pump, the pump cover can be opened, advantages of convenient maintenance, but the volume is larger, heavier, irrigation for hills, plateau middle area.  

Multi stage centrifugal pump is actually a few of the impeller in a series of work on a shaft, a few of the impeller is called a few pumps. Its head and shaft power is the sum of the single stage head and shaft power of each impeller. It has the advantages of high lift, but its structure is complex and heavy, which is suitable for the high lift irrigation area.  

 The axial flow pump is used to pump the water from the impeller to the water. Because the water flow along the shaft direction, so that the axial flow pump. According to the different installation of pump shaft, can be divided into 3 types: vertical, inclined and horizontal. It has high flow rate, low lift, high efficiency, suitable for large area irrigation and plain river network area.  

 Between the two impeller shape between centrifugal and axial flow pump mixed flow pump, is the use of centrifugal force and thrust pumping, so called mixed flow pump. Mixed flow pump with spiral case and guide vane type 2. Volute mixed flow pump is generally horizontal; mixed flow pump is vertical, it has the characteristics of medium flow, head slightly larger than the centrifugal pump, light weight, small size, and convenient maintenance, suitable for medium and medium flow in plain irrigation area.  

 deep well pump is a pump used to extract well water. The structure is more complex, but the installation is reliable, and the work efficiency is high. The working part of the working part is in series with a lot of impeller. deep well pump should be selected in the area of deep water distance from the ground.  

 Submersible pump is a motor and pump directly installed together can all dive into the work of the pump. The material has the advantages of compact structure, small volume, light weight, convenient installation and use, etc., but the material and processing requirements of some parts are higher, and the use is easy to fail, and the service life is short.