Propeller pumps are of an axial type, i.e. water flows into a suction bell mouth axially passing via impeller and stator diffuser, being further directed through a discharge pipe to the piping. The pump itself is of a simple and solid construction Bell mouth, stator diffuser, tube casing, discharge elbow and electro-motor pedestal are made of qualitative grey cast. Rotor blades can be of alloyed steel...
Propeller pumps are of an axial type, i.e. water flows into a suction bell mouth axially passing via impeller and stator diffuser, being further directed through a discharge pipe to the piping. The pump itself is of a simple and solid construction Bell mouth, stator diffuser, tube casing, discharge elbow and electro-motor pedestal are made of qualitative grey cast. Rotor blades can be of alloyed steel or bronze. A shaft is of alloyed steel as well. A normal design of blades is executed so to enable adjusting of a blade angle of attack as required for an adequate working point during erection in the works. Upon a customer's requirement, the pumps provided with deflecting blades in operation, are also produced. Such design ensures deflection of blades by means of a special device. If necessary, the blades can be deflected during operation, for an adequate angle to achieve as much as better efficiency. Upon requirement, we supply pumps of a such design, which enables axial removings, of rotating parts out of the casing. Pumps with deflecting blades in operation are manufactured only from the size 80-100 onwards. The shaft consists of two or more parts, reciprocally joined by a rigid coupling. Bearings are of a slide type, either of bronze, grease lubricated from an additional lubricating pump mounted on a motor pedestal, or of water lubricated non-metal materials. Main axial bearing is a roller or slide one and it is lubricated by oil. The shaft is by means of a flexible coupling joined with an electro-motor. Sealing of pump is carried out by ordinary packings or labyrinth ones, however, upon requirement other various packings can be installed.