Bell And Gossett Double Suction Pump
It is equivalent to two single-suction impellers of the same diameter working at the same time. The flow rate can be doubled under the same impeller outer diameter. The pump casing is horizontally split, which is convenient for inspection and maintenance. At the same time, the inlet and outlet of the double-suction pump are in the same direction and perpendicular to the pump shaft, which is conducive to the arrangement and installation of the pump and the inlet and outlet pipes. The impeller structure of the double-suction pump is symmetrical, there is no axial force, and the operation is relatively stable.
As an important fluid conveying equipment in the modern industrial field, the split-center double-suction pump plays an irreplaceable role in agricultural irrigation, urban drainage, industrial circulating water systems and other scenarios with its unique design structure and excellent performance characteristics. This type of pump adopts a horizontal split-center structure design, and the pump casing is horizontally split along the axis, so that the inlet and outlet pipelines do not need to be disassembled during maintenance, which greatly improves the maintainability of the equipment. The application of cast iron material not only ensures the structural strength of the pump body, but also makes the equipment more competitive in the market through reasonable cost control. In terms of impact resistance, the split-center double-suction pump can effectively cope with working conditions such as water hammer effect and load mutation by optimizing the impeller hydraulic model and enhancing the bearing support system.
From the working principle point of view, the core advantage of the split-center double-suction pump lies in its double-suction impeller design. This special structure allows the liquid to enter from both sides of the impeller at the same time, which not only balances the axial force, but also significantly improves the suction performance and cavitation margin index of the pump. According to actual test data, the flow rate of the double-suction pump at the same speed can reach 1.5-2 times that of the single-suction pump, which is particularly suitable for large-flow water delivery projects. In irrigation and drainage applications, this large flow rate characteristic combined with the optimized volute diffusion design can quickly drain large areas of water, and its efficiency is 15%-20% higher than that of traditional centrifugal pumps. A water conservancy project case shows that the drainage system using the XS-type split-center pump successfully shortened the drainage time from the original 36 hours to 22 hours during the typhoon season, fully verifying its efficient drainage capacity
