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The double suction split pump is widely used for industrial and urban water supply, drainage, as well as irrigation and drainage in farmland and orchards, for transporting clean water or other liquids with physical and chemical properties similar to clean water. The split pump relies on the principle of centrifugation to extract liquid materials. The split pump made of special materials is suitable for extracting corrosive liquids and liquids containing a certain amount of solid particles.

The double suction split pump is horizontally installed, with the pump casing horizontally separated from the axis. The upper part is the pump cover, and the lower part is the pump body. The suction and discharge ports are both located on the pump body below the pump axis, with the center line perpendicular to the axis. During maintenance, the inlet and outlet pipelines do not need to be disassembled to remove the pump cover and remove the rotor components.

Efficiency Analysis and Improvement Plan of Double Suction Split Pump

1. Due to the erosion of water flow, the inner wall and impeller of the water pump channel become rough and uneven, and the friction coefficient of the water pump channel increases. In addition, the flow velocity of water in the pump is high, resulting in an increase in head loss. Reduced hydraulic efficiency.

2. Due to casting defects, cavitation, abrasion, corrosion, and chemical etching caused by the processing technology of water pumps, voids or cracks are generated in the pump flow channel, and vortices are generated during water flow, resulting in energy loss. Reduced hydraulic efficiency.

3. Cavitation on the surface of the impeller. Due to the negative pressure generated during the operation of the blades against the water surface, when the pressure Pk

4. Volume loss and mechanical loss. Due to the prolonged use of the pump, mechanical wear leads to leakage and increased resistance, resulting in a decrease in volumetric and mechanical efficiency.

The above reasons have led to poor performance of the double suction split pump. The operating efficiency can be reduced by 2-5%, and in severe cases, the pump efficiency can be reduced by more than 10%.

Application of Polymer Material Coating Technology in Improving Pump Efficiency

The proportion of hydraulic loss in the influencing factors of pump efficiency is the largest. The rougher the wall surface of the flow passage part of the pump, the greater the loss. How to improve the smoothness of the wall surface and reduce friction resistance is the key to reducing hydraulic losses. At present, Western countries have adopted polymer composite materials to directly process pumps and components to improve efficiency. Currently, there is no such technology in China. Through years of cooperation with industrial enterprises, the company has successfully applied polymer composite material coatings on pump bodies and impellers, which can improve the smoothness of the flow passage, effectively reduce fluid resistance, and significantly improve pump efficiency.

本系列耐腐蚀,corrosion-resistant, and cavitation resistant polymer composite materials are also used to resist wear, corrosion, and cavitation in fluid environments, adapt to alternating deformation and temperature changes, and ensure excellent anti-corrosion, cavitation resistance, and wear resistance of the materials. The smoothness of its surface is several times that of the casting surface. This smooth surface reduces the stratification of fluid in the pump, reduces turbulence, reduces volume and hydraulic losses in the pump, reduces power consumption, and thus improves the overall efficiency of the pump by 5% -10%. In addition, polymer composite materials are essentially polymer polymers with chemical corrosion resistance, which can isolate the contact between air, water and other media and the base material of pumps and impellers, minimizing rust and electrochemical corrosion to the greatest extent; At the same time, its special molecular structure endows it with high elasticity and smooth surface, which can effectively enhance the pump's anti cavitation ability and enhance its efficiency.