Spray pump for use in vehicle washing plant has motor installed in chamber in housing and driving pump wheel for suction and pumping fluid, motor inner channel feeding fluid from motor interior to motor chamber

摘要

The pump has a housing (16) containing a motor chamber (24), in which a motor (17) is installed. The motor drives a pump wheel (27), which sucks and pumps a fluid. An inner channel (46) in the motor connects the motor interior with the motor chamber for feed of fluid from the motor interior into the motor chamber. An outlet structure (47) is formed in the housing radially outside the inner channel, connecting the motor chamber with the exterior of the housing, feeding fluid from the motor chamber to the housing exterior. The outlet structure has channels (48,49,50) running in at least two different directions.