Design and Implementation of a Pump and Valve Integrated System Inspired by Bivalve

Abstract: Pumps and valves are generally indispensable parts of the hydraulic system and a component that integrates the functions of pumps and valves plays an important role in the integration and lightweight development of hydraulic systems. In this paper, a magnetically actuated pump and valve integrated system is proposed. Inspired by bivalve, the driving structure of the pump and valve integrated system is designed for jet propulsion. This design intends to actively control flow of a pipe by switching the open and close state of the system. Different from some biomimetic bivalves driven by rotating motors, the proposed integrated pump and valve system is characterized with direct drive by shell-shaped magnetic actuators. Based on the equivalent magnetic charge modelling method, a theoretical model of the magnetic torque of the permanent magnet is established for the analysis and driving mechanism design. The numerical calculation results of the theoretical model are consistent with the finite element simulation results. Additionally, the magnetic torque of different arrangements of permanent magnets are compared through electromagnetic simulation. Motion analysis is carried out by discretizing time. Finally, experiment for flow control is conducted to verify the effectiveness of the proposed pump and valve system.