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The following professional wholesale submersible pump manufacturers to introduce the technical requirements of submersible sewage pump:
1, submersible sewage pump can be sent with rags, short fiber materials and general waste and other untreated sewage, and through the diameter of 50% of the diameter of the solid particles.
2, submersible sewage pump can work within the specified range, no cavitation occurred, smooth operation, no stuck, stagnation, and has a stable pressure characteristics of the head, when the pump in its characteristic curve on the run, the motor Power is not overloaded.
3, submersible sewage pump all pressure parts are for air pressure test, the test pressure for its design pressure of 2 times, but not less than 0.45Mpa, which lasted 30min without leakage.
4, submersible sewage pump in the assembly, the 0.2MPa pressure test, which lasted 30min without leakage.
5, submersible sewage pump all parts, seals, anti-corrosion coatings are used in line with national standards of the material, the surface of light, no trachoma, cracks, etc., in order to prevent submersible sewage pump due to media erosion, where the water contact Are used for anti-salt, anti-corrosion spray treatment, the surface of the use of shot blasting secondary rust and reached Sa2.5 level, and then sprayed with corrosion-resistant epoxy resin powder treatment, coating thickness greater than 0.3 mm less than 1.4 mm, Road surface smooth and smooth, can guarantee the use of the coating is not less than 5 years.
6, submersible sewage pump impeller, rotor dynamic balance test, the balance accuracy of G6.3 level, the vibration is not greater than 0.45mms.
7, submersible sewage pump with water jacket cooling system, can ensure that the submersible motor completely exposed to the surface under the conditions of continuous operation, running for continuous operation, gap operation or long-term stop the resumption of operation, allowed to start 15 times per hour without Caused by any damage, in order to ensure that the motor temperature is not greater than the required requirements, the motor structure with internal and external cooling ventilation structure, the internal ventilation structure to ensure that the motor temperature quickly through the internal air cooling, external cooling mainly through the water jacket in the flow The media water to the motor surface temperature from the media to achieve the purpose of cooling, each submersible sewage pump has a perfect, the internal cooling system, the motor cooling jacket surrounded by the stator chamber, the impeller back of the blade produced by the back pressure The part of the pumped liquid can pass through a circulation passage and circulate as a cooling liquid in the cooling system. The cooling system ensures that the submersible sewage pump can operate continuously at ambient temperatures up to 40 ° C, regardless of whether the motor is partially immersed in the pumped liquid or exposed directly to the air.
8, submersible sewage pump unit allows reversal, the maximum reversal speed for the operation may occur in the maximum flying speed, rated speed of 130%, in the case of duration 2min, the parts will not be damaged To ensure the safety of the unit, submersible sewage pump in the bearing structure design, bearing strength design, impeller strength calculation, according to the possible maximum fly reversal speed design.
9, stainless steel sewage pump nameplate firmly fixed in the clear position of each pump, the nameplate with stamping digital signs.
10, the lifting ear of each pump placed in the lid near the pump center of gravity solid and reliable.
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