Design Analysis and Manufacturing Technology Research of Plastic Pump Head

As the core component of the hydraulic end of the plunger pump, the emulsion pump head body is subjected to extreme pressure. Therefore, the finite element analysis of the pump head body is of great significance to improve the reliability and rationality of product design. Due to the special structure of the pump head body, studying its processing technology and improving processing efficiency are the keys to reducing production costs and improving product competitiveness. The analysis of plunger pump movement law, pulsating flow and pressure fluctuation caused by pulsating flow are analyzed to obtain the relevant factors that cause pressure fluctuation, which provides theoretical basis for the design and improvement of plunger pump, and also analyzes the pump head body. The state of stress provides an important theoretical basis.

Using the analysis of the stress distribution law and fatigue life distribution state of the emulsion pump head body under the maximum stress conditions, the improvement measures of the pump head structure are proposed based on the analysis results. According to the working conditions and structural characteristics of the pump head body, the process route of the pump head body from materials, blanks, large-diameter hole sleeve processing, stepped holes, milling of inch threads, rolling to hydraulic self-reinforcing is given. The characteristics of the nest drill, the selection of the workpiece rotation and the external chip removal structure type, detailed analysis of the nest drill related drilling processes, such as cutting power, cutting amount selection, cooling and chip removal, and the nest drill is different from ordinary holes Auxiliary devices for processing equipment.

Tool parameters are an important factor affecting tool processing efficiency and service life. Since the nest drill works in a confined space, while satisfying the processing efficiency, the determination of chip breaking and chip removal methods is the key to the design of the nest drill. The influence of the axial vibration of the cutter on the cutting angle during the hole drilling process was analyzed, and the theoretical basis of the factors affecting the hole axis deviation was given. Milling is used for inch thread processing, and the application of the macro program improves the efficiency of thread milling. In order to increase the strength and service life of the pump head body, the internal cavity hydraulic self-reinforcing method is used to prestress the internal cavity.