Operating surface submersible electric pump is a product of mechanical and electrical integration, with simple and compact structure and convenient use. The demand will continue to increase, and has the following development trend:

1. Develop medium and large submersible electric pumps

Large and medium-sized submersible electric pump has the outstanding advantages of simplifying the pump structure and saving investment in the construction of li station. It has been used in municipal, industrial, mining, enterprise and agricultural water supply and drainage. It is expected to increase the proportion in the future.

2. Development of submersible pumps of various forms and USES

China's submersible pump form and the Swedish feili company compared with the pump is not enough, such as the pump with cutting device, multistage pump, pumping corrosive medium submersible pump production is very few.

3. Develop high reliability mechanical seals

Mechanical seal is the key of submersible pump, the use of two single end mechanical seal, so the pressure of the medium can act on the end, leakage direction for the flow type, these are beneficial, but slightly complex structure. In the oil chamber installed with a double end mechanical seal, both sides of the end face should be used in different structural forms, so that the pressure of the medium can act on the end face of the lower side, otherwise only by spring force, the reverse thrust of the seal end face easy to open the end face. Further structural and material studies should be undertaken to improve their reliability and longevity.

4. Use new materials

Ordinary pumps have used stainless steel, fluoroplastic (F46). High density polyethylene, plastic lining, plastic lining, ceramic spraying, etc., all these materials should be applied to submersible pumps as soon as possible, in order to change the current submersible pump materials only cast iron, and expand the application of submersible pumps.

5. Pay attention to appearance quality

China's submersible pump appearance quality in modeling some are better, and some are not good enough, such as surface painting, roughness is also very not about, these need to be further improved, in order to make the domestic submersible pump more people in the international market.