Structural Design Study Of Axial Plunger Type Chemical Grouting Pump With High Pressure And Large Flow

Chemical grouting is a dominate technology used in reinforcement, blocking leakage and anti-seepage. It is widely applied to hydraulic and hydro-power engineering, traffic engineering, municipal engineering, energy engineering, construction and bridge engineering. However, the technical parameters of present chemical grouting pump cannot match the growth of demands on grouting pressure and flow rate in the massive geotechnical engineering. Furthermore, the performance of equipment restricted the progress and quality of the practical engineering, which has becoming the bottleneck problem in the popularization of the chemical grouting. Therefore, it is of great practical importance and market value to develop the chemical grouting pump with high pressure and large flow rate at the present time.This paper mainly aims at exploiting the high-performance plunger type chemical grouting pump, which is of 10 MPa at pressure and 120 L/min at flow rate, in order to meet the practical requirements in the massive geotechnical engineering. Firstly, the structure of plunger pump with high pressure and large flow rate is designed, which is based on the comprehensive investigation of different structural axial plunger pumps in practice, and the high viscosity of chemical grouting material is took into account. Secondly, Based on the physical model of chemical grouting pump, the hydrodynamic property of chemical grouting pump, especial the valve plate structure, is optimized with the help of computational fluid dynamics(CFD) software Pump Linx. Furthermore, the kinematic and dynamic characters of chemical grouting pump is evaluated through the ADAMS and AMESim subsequently. At last, The mechanical behaviours of neat epoxy, the nanosilica enhanced epoxy and PEEK are characterised in their wear properties and corrosion properties experiments, and the optimal material match for the key friction pairs of chemical grouting pump is presented.At the end of the paper, the systematic summary is presented, which provides the theoretical and technical basis for the continuous performance test of chemical grouting pump, even for its engineering application. Especially, the insufficient of current research in this paper shows clearly the prospective directions of corresponding research work from now on.