et.
(2) when the flexible blade rotation, liquid from the pump chamber suction department is brought into the discharge department.
(3) when the flexible blade again contact eccentric convex block, bending, and accompanied by a extrusion action, so that the liquid uninterrupted, pulsating out of the pump cavity, thus completing the whole process of suction and drainage.
As the core technology of flexible pump, the impeller should have good elasticity, small permanent deformation, and can withsta