The parts of centrifugal pumps is as follows, (1) casing, (2) blades, (3) inlet, (4) nozzles (diffuser) and a outlet.
a. Casing (home conch)
Its function is to change or convert fluid energy into static pressure energy.
b. Blade
Its function is to convert the kinetic energy or provide kinetic energy to the liquid, and then in the casing is converted into pressure energy.
Inlet. Inlet on pump, its function is to inlet fluid into the blades.
Outlet. Outlet pump function is to channel the outlet from the blades.
c. nozzle
Its function is to convert the kinetic energy into pressure energy.
Irrigation Pump Selection
Pump Selection Criteria and Procedures for Irrigation. The main factor is the pump selection: (1) the purpose of irrigation water for crops, (2) discharge of water sources (rivers, ponds, wells), (3) the availability and cost of this type of pump and energy.
“Determining Pump Capacity Debit”
Available data on the safe discharge of wells and other water sources, as well as the required irrigation water discharge plant should be estimated by calculation.
“The capacity of the pump discharge based on the needs of the plant.”
Debit pump must be able to fulfill the purposes of the peak crop. Debit pump depends on the acreage on different plants, the purposes of the peak crop, rotation and long periods of pumping operations in a single day. The relationship can be calculated by the equation:
Where:
q: the pump discharge (liters / sec);
A: plantation area (ha);
y: irrigation water depth (cm);
R: rotation period (days);
Q: long pumping per day (hours / day)