II. Product Introduction
Mini-type Clean-water Centrifugal Electric Pumps include those of the series of SHF(m),
CP(m), PRm, SGA(m), PX(m), PUM, 2SGP(m), SGT, KSW, PC, CPH, and ZDK (hereinafter
referred to as the “Electric Pump”). The Electric Pump is mainly composed of such three parts as
the motor, the water pump, and the seal. The motor is an asynchronous motor. The pump adopts
the centrifugal-type impeller-volute (guide vane) structure, featured by high water yield and stable
operation. The pumps hereunder can be divided into non self-priming pumps and self-priming
pumps. A product of ZDK model has the function of self-priming. The seal: There is a single
mechanical seal between the water pump and the motor, used as the motive seal. The water
blocking ring revolving on the spindle provides assistance in water throwing and separation and at
the place of sealing of each fixed spigot is an O-shaped rubber seal ring used as the static seal.
The Electric Pumps of the models hereunder, with advantages such as small volume, light
weight, compact structure, and easy installation, can be widely applied to irrigation and spray
irrigation for farms, spray irrigation and watering in gardens, water supply to vegetables
greenhouses, water supply and drainage of breeding industry, and lifting of water from wells.
III. Operating Conditions
The Electric Pump shall be able to operate continuously and normally in the following
operating conditions:
1. The ambient temperature does not 40
℃
;
2. The temperature of the medium ranges from 0 to +40°C (the temperature of the medium to
be conveyed by a CPH or PUM pump is between 0 and +90
℃
);
3. The pH value of the medium is 6.5~8.5;
4. The mass ratio of the solid impurities contained in the medium is not higher than 0.1% and
the particle size is not more than 0.2mm
5. The voltage and the frequency of the power supply meet the requirements in the
nameplate of the Electric Pump, relating to the nominal voltage and frequency and the scope of
the fluctuation of voltage is ±10% of the nominal value.
