The invention relates to the technical field of water pumps, in particular to a novel energy-saving self-sucking pump which is characterized by comprising a pump body 1, an
impeller 2, an
impeller nut 3, a key 4, a shaft 5, a mechanical seal 6, a
volute chamber cover 7, a pump cover 8, an outlet
flange 9, an air discharging valve 10, a water blocking ring 11, a motor 12, a water discharging valve 13 and a water inlet 14. Because water is sucked from the single side of the
impeller 2 of a traditional self-sucking pump, and the generated axial centrifugal tension is larger and is markedly larger if the traditional self-sucking pump is in the model with larger
caliber, larger flow and higher lift, the pump shaft of the motor 12 is rapidly damaged, and the service life is shorter. Because the self-sucking pump belongs to a single-sucking structure, the pump is always in a pressurized state in the operation of the water pump, and the high the lift is, the higher the pressure is, the water is quite easily leaked to cause the
water seepage and the damage of the motor. Differing from the design that the inlet of a traditional pump is positioned on the lateral surface, the water inlet 14 of the novel energy-saving self-sucking pump is drilled on the front surface of the pump, thereby the problems of
water leakage and negative pressure are well solved, the work efficiency is improved, and the service life is prolonged. The novel energy-saving self-sucking pump can run at a low
water level and has low water-sucking
water level,
high lift and high efficiency and saves energy; a front-
surface water-sucking structure is adopted, the motor 12 has no axial tension, the radial force is lightened and balanced, the pump efficiency is improved, and the problems of
water leakage and negative pressure are well solved; the service life of the pump is greatly prolonged; and the pump has more reasonable and compact structure and attractive appearance, and
safer and more reliable in running.