Multi-muscle combined heart-like underwater propeller

The invention aims at providing a multi-muscle combined heart-like underwater propeller. Every two IPMC muscle filaments are connected through elastic connecting materials. The two ends of every two connected IPMC muscle filaments are connected with electrode structures and combined and assembled into an IPMC muscle unit. The IPMC muscle units in each pair are connected in series to be combined and assembled to form an IPMC muscle bundle. The IPMC muscle bundles in different sets are connected to circular combined muscle supporting plates through parallel connection calking to form combined muscles which are distributed and assembled in a multi-layer mode to form muscle sets. The muscle sets are combined and assembled layer by layer through power supporting plates, piston plates are fixed to the front ends of the muscle sets, and the tail ends of the muscle sets are connected to the inner side of a water storage cavity and the inner side of a water jetting cavity. The water storage cavity and the water jettin