WORKING PRINCIPLE
PV pumps are submersible vortex pumps, for dirty water, designed mainly for domestic use and industrial use. Their operating principle is that of a centrifugal pump with a retracted vortex. A large sized ring chamber with a threaded delivery opening is machined in the pump body and closed by a cover, housing the suction opening, which is shaped to prevent suspended soild over a certain size from entering the pump. Since the impeller is retracted with respect to the cover, water entering the front chamber lying between these two components assumes a vortex motion and is centrifuged into the ring chamber, leaving the pump via the delivery opening.
PUMP INSTALLATION AND APPLICATIONS
PV pumps are designed to lift dirty water which is not high chemically aggressive to the pump components. In all cases where suspended solids up to 20MM have to be dealt with. Recommended applications therefore include draining flooding in confined areas such as basements and garages, and also pumping domestic waster and the disposal of waste water, containing fibrous matter and is also widely used in many factories. For aquarium, PV pumps are also very suitable to use. These pumps are easy to install and dependable when used automatically in fixed installations. A purposely built pit with minimum dimensions 450*450*450 mm is recommended for fixed installations, to provide total drainage and allow correct operation of the float swith. This system automatically starts the pump when the fluid reaches a preset level, shopping it once the fluid has been emptied. Installing a suitable non-return valve on the delivery pipe prevents reverse flow when the pump stops.
STRUCTURAL CHARACTERISTIC
¡ù Stainless steel
pump body
¡ù Stainless steel mechanical seal(graphite to
ceramic or SiC to graphite)
¡ù With float switch or
without
¡ù Reinforced polypropylene impeller with open type
¡ù Reinforced ploypropylene pump casing and base plate
¡ù With thermal overload
protector in single phase motor |
