In recent years, due to the influence of geography and climate in our country, agricultural production is often threatened by droughts and floods. Therefore, in the development of agricultural machinery, mechanization of farmland drainage and irrigation is always prioritized. Drainage and irrigation machinery of many types, different performance, commonly used agricultural pumps are: 1, submersible pump submersible pump is characterized by small size, easy to move. Where there is power, it is widely used in deep and shallow water pumping in rivers and channels. QY-type oil-filled submersible pump consists of pumps, motors and motor seals, the pump is vertical. According to different head, can be used centrifugal pump, mixed flow pump or axial flow pump. 2, Centrifugal pump Centrifugal pump is the use of centrifugal force generated by the impeller when pumping a vane pump, according to the way of absorbing water into single suction and double suction pump; according to the number of impeller is divided into single-stage pump and multistage pump; press the pump shaft Location is divided into vertical pumps and horizontal pumps. Centrifugal pump mainly by the impeller, pump body, pump shaft, bearings, packing room, tape wheels, brackets and other components. Centrifugal pumps to adapt to a wide range of flow and lift, the most common application, widely used in plains, mountains and hilly areas. 3, Axial flow pump Axial flow pump is the use of impeller axial thrust pumping a vane pump. It is characterized by large flow, low lift, suitable for use in the plain river area are mostly vertical axial flow pump, that is, ZLB axial flow pump. 4, water pump The water pump consists of hydraulic power turbine and water pump combination, potential water run. In areas rich in water resources, it is worth promoting. 5, mixed flow pump Mixed flow pump is the use of impeller centrifugal force and axial force of a vane pump. Mixed flow pump is divided into volute (ie, HB pump) and guide vane (LN type, HL type). Between the performance of the above two, the southern rice paddy field irrigation, more use of this pump.
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