Product introduction
Model screening: after performance optimization, double-channel impeller is adopted with two or three reasonably arranged mechanical seals, which ensures
the lubrication and cooling of mechanical seals, the smooth operation without blocking and good flow capacity.
Improvement of mechanical seals: series mechanical seal is adopted, with more reliable shaft seal and longer service life.
Structural optimization: the structural design ensures the airtightness of mechanical seals, smooth operation, vibration resistance, drop resistance, and higher reliability. The optimized sewage pump is more portable, practical, corrosion-resistant and wear-resistant.
The submersible motor is featured with IPXS protection level, good cooling effect and temperature rise lower than ordinary motor, which ensure the better durability.
Based on the F-level insulation, the motor has longer service life.
The motor is equipped with a variety of protection devices, which is convenient for users’ choice at the time of optimization.
Shaft Seal
The shaft seal of motor is realized with two or three series mechanical seals, which form multiple reliable sealing defense lines. One of the seals is in the
medium of pump. The sealing surface is compressed more tightly with the increase of medium pressure, thus effectively preventing water from entering the oil chamber; the other two seals are in the oil chamber, which can prevent oil from entering the motor. If the first seal is failed, the other two can still prevent oil and water from entering the motor. Besides, the bellows-type mechanical seals cooperate with the innovative structural cavity to further improve the reliability of shaft seal greatly. Under normal use, the non-failure operation time is more than 9,000h.
Oil Chamber
The oil chamber is filled with proper machine oil and installed with two mechanical seals. It is the first barrier to prevent the medium from entering the motor through the pump shaft. If the first seal is failed, the buffer medium in oil chamber can not directly enter the motor. Meanwhile, the friction surfaces of the two independent mechanical seals are lubricated and cooled to make the mechanical seals work more reliable, which can also take away the heat of lower
bearing and some heat of the motor.
Motor Shell
The frame, bearing seat and cover compose the motor shell. The connection place of all components is provided with the reliable static seal. Besides, each motor has been checked through the strict hydrostatic test, so as to ensure the good water tightness.
Bearing
The lower bearing forms the reliable support of motor pump shaft. According to radial and axial forces and pulsating load generated during the operation of
sewage pump, the lower bearing can be composed of two or tree different types of beraing, thus ensuring the stable operation and long service life of unit.
Cable and Cable Seal
1) The cable is sewage-resistant flexible cable with rubber sheath. The cable core section is designed for long-term and reliable operation at 40P ambient
temperature and motor full-load power. When the sewage pump works, if the motor runs at non-full load power or under the ambient temperature lower than 40P,the longer service life will be ensured.
2) There is seal compressed between the cable rubber sheath and the motor gland, so as to prevent the medium from penetrating into the inner cavity of motor from the interface between cable and motor gland.
3) There is rubber vulcanization between the cable sheath and the cable core. Once the rubber sheath is scratched, it can still effectively prevent the medium from entering the motor through the sheath.
Safety Protection in Motor Pump
1) Oil-water probe: installed in the oil chamber to check the leakage of the first mechanical seal (in the medium), which will send the alarm signal when the medium leaks into the oil chamber and reaches a certain proportion.
2) Inlet probe: installed in the motor chamber to check the leakage of the second mechanical seal, which will send the alarm signal and stop the pump
when the oil (oil-water mixture) enters the motor.
3) Thermo-sensitive element: installed in the motor stator winding, which will send the alarm signal and stop the pump when the motor is overloaded for long
time and the temperature of motor winding (or the heating of the motor winding caused by other reasons) reaches a certain value. rubber sheath. The cable core section is designed
Ultra efficient Siemens motor
Fluid optimization design is energy-saving and efficient
Adopting a containerized anti dry abrasion mechanical seal for convenient maintenance
Activity flange Easy to install
Typical application
It is applicable to discharge the waste water, rainwater and sewage containing solid particles and long fibers in buildings, hospitals, residential areas, muni c ipal engineering , road traffic and their construction, engineering sewage discharge, small-scale sewage treatment and other occasions.
Both pump body and impeller are carefully selected, which ensures the good passage capacity of flow channel, high efficiency, flat power curve and not ease
to overload. The impeller is featured with accurate balance, small vibration and stable rotation.
to overload. The impeller is featured with accurate balance, small vibration and stable rotation.
The specially designed submersible motor, featured with IPXS protection level and F-level insulation, can tolerate the high temperature rise. Under the normal
temperature rise condition, the motor insulation life is extended, wile the submersible cooling effect is good and the actual temperature rise is low, thus
ensuring the longer insulation life of motor.
temperature rise condition, the motor insulation life is extended, wile the submersible cooling effect is good and the actual temperature rise is low, thus
ensuring the longer insulation life of motor.
The heat of motor dissipates through the casing. As long as half of the motor stator casing is soaked by the medium, the motor can operate reliably and safely. The more soaked, the more favorable the motor cooling is.