Self-priming centrifugal pump with lateral duct - which is located in intake side of pump housing only, and intake port is coupled to duct start

摘要

The pump stages consist each of a pressure and an intake side. The pressure side has a stage jacket with discharge aperture, while the intake side is formed as a side duct housing with intake aperture and side duct. Th side duct (13) is located in the intake side housing (12) only, and the intake (14) is directly connected to the initial part of the duct. The pressure side stage jacket (10) has a fluid return near the intake. A impeller (5), secured against rotation, is axially displaceable on the pump shaft, and has stop elements to form precise stops (9). The impeller blades (17) have an angled surface. ADVANTAGE - improved pressure differential and performance and noise reduction.