CONCRETE PISTON STRUCTURE PUMPING SYSTEM AND CONCRETE PUMP

摘要

A concrete piston structure a pumping system comprising the concrete piston structure and a concrete pump. The concrete piston structure is arranged in a transport cylinder of the pumping system comprising a piston connecting rod (1) and a piston body (2) connected thereto. A flexible sealing component (4) is arranged in the circumferential direction on the exterior of the piston body (2). A first sealing component is also arranged in the circumferential direction on the exterior of the piston body (2). The first sealing component is arranged at one side of the flexible sealing component (4) in proximity to a transportation medium. The first sealing component comprises a filter ring (31) arranged in the circumferential direction on the exterior of the piston body (2) and matches the inner wall of the transport cylinder. The concrete pump comprises a hopper and is provided with two transport cylinders where the two transport cylinders are alternately in communication with the hopper. Under the premise of ensured sealing effect the concrete piston structure improves the service life of the sealing structure.