Abstract
Pump is a kind of transformation of the original motivation of the work done by the successful transmission fluid pressure energy, potential energy and kinetic energy of fluid machinery, general machinery belonging to the scope of the national economy has been widely used in various industries.Single-phase submersible centrifugal pump is the motor and pump combined with the work of carrying water into the water tool, its main feature is the pump one, not the length of transmission shaft, small size, light weight, motor and pump are submerged into water without ground pumping station construction, easy to move, not filling water, easy to operate, adaptable for urban water supply and drainage, agricultural irrigation and construction sites and other projects in large quantities.Inlet section configuration grid (mesh) to prevent solids containing impurities in liquid or sewage pump sewage into the plug flow, mainly for clear water of the hydraulic conveyance, use 220V single-phase power. QDX3-18-0.55 single-phase submersible centrifugal pump is a small submersible pump in a common product specifications.
This paper analyzes the QDX3-18-0.55 single-phase submersible pump centrifugal structure and working principle of the design parameters according to the pump, calculate the impeller, pressure water chamber and the hydraulic motor and physical structure parameters. This according to the pump design parameters, calculate the impeller, pressure water chamber and the hydraulic motor and physical structure parameters. According to the safety and reliability, standardization and implementation of standardized, reasonable identification and selection of seal types, electrical body parts form and materials, using electromechanical coaxial direct link structure.Pump motor is located in the upper part of the pump head at lower electric pump. Impeller installed in the pump shell and tighten the pump shaft, the shaft directly driven by the motor.
