Now, as a general machine, pump has been widely used in various fields of national economy, such as agricultural irrigation and drainage, urban water supply and drainage. In all sectors of industry, pumps are indispensable equipment. For example, the power industry needs boiler feed water pump, forced circulation pump, circulation pump, condensation pump, ash pump, water transmission pump and fuel pump; In the mining industry, mine drainage pump, water filling and sand filling pump, mining pump and coal water pump are needed. In the petroleum industry, mud pumps, water injection pumps, deep well oil extraction pumps, oil transmission pumps, petroleum refining millet, etc. Is needed; Corrosion resistant pump, proportional pump, metering pump, etc. It is necessary in the chemical industry; The transportation industry needs fuel pumps, fuel injection pumps, lubricating oil pumps and hydraulic pumps.
In chemical production, a large number of raw materials and semi-finished products are liquid. According to varieties, liquids are more diverse, such as water, petroleum products, organic solutions and various acid, alkali and salt solutions. In order to ensure the normal and continuous chemical production process, these liquid materials need to be transported from one place to another along the pipeline, or from low pressure to high pressure by pump. The normal operation of pump is the key to ensure the normal operation of chemical production. If the pump fails, it will affect production or even stop production. If the pipeline is compared to the blood vessels of the human body, then the pump is the heart of the human body. Therefore, the pump is an important general machinery and plays an important role in production.
Water pumps have different uses, different liquid media, different flow rates and different lift ranges. So, of course, they have different structural forms and different materials. To sum up, they can be roughly divided into:
1, urban water supply 2, sewage system 3, civil construction system 4, agricultural water conservancy system 5, power station system
6, chemical system 7, petroleum industry system 8, mining and metallurgy system 9, light industry system 10, ship system