1. According to the characteristics of sewage, determine the type of pump, whether it is necessary to use a stirring sewage pump or a cutting function, whether to use a vortex impeller or a flow channel impeller, and whether it is a single flow channel or a double flow channel (under the same conditions, a single flow channel is used. better than the anti-clogging performance of dual flow channels).
2. The submersible sewage pump brand that is manufactured and produced in strict accordance with ISO9001 or the current relevant domestic standards and has been recognized as qualified by the comprehensive performance test of the organization must be selected.
3. The submersible sewage pump should have leakage protection devices and overheating or overload protection devices, as well as sealing leakage monitoring devices and reliable grounding devices.
4. According to the amount and quality of sewage water used by the user and the location of the sewage pool (collection well), reasonably determine the flow and head required by the submersible sewage pump, and determine the specifications of the pump.
5. The complete set of submersible non-clogging sewage pump includes control cabinet, liquid level switch, automatic coupling device, etc. It should be supplied by the supplier when the user needs it; the wearing parts should be equipped randomly.
6. If the submersible sewage pump is used to transport corrosive wastewater, the pump body should be made of stainless steel and other corrosion-resistant materials.
7. When choosing, you should know the average trouble-free working time, mechanical seal life, bearing rated life, motor design life, motor insulation level, and the motor should be able to withstand the number of starts and stops per hour under normal conditions of use.
8. When there are multiple brands of products to choose from, it is advisable to focus on the material of the main components of the submersible sewage pump, the processing accuracy, the appearance of the equipment, the functions of the overcurrent components (large channel, anti-winding, anti-blocking, etc.) and additional functions (long fiber). Cutting and tearing, automatic mixing to prevent dirt precipitation and hardening, etc.), the supplier's commitment to trouble-free service life, after-sales service, quotation and other aspects are comprehensively compared, and the best ones are used.
9. The outdoor sewage pool of the building can be installed with a non-sealed manhole cover without a ventilation pipe. Indoor sewage pools should be installed with closed manhole covers and ventilation pipes. There are three kinds of closed manhole cover materials: gray cast iron, cast aluminum and ductile iron.
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