There are various types of chemical pumps, which can be classified according to the working principle, structure, conditions of use, conveying medium and chemical use.
According to the working principle and structure, chemical pumps can be divided into vane pumps, positive displacement pumps and other types of pumps. Among them, vane pumps include centrifugal pumps, vortex pumps, mixed-flow pumps and axial flow pumps, which drive various impeller blades to give centrifugal force or axial force to the liquid when the pump shaft rotates, so as to transport the liquid to the pipeline or container. Positive displacement pumps include reciprocating pumps, rotary lobe pumps, etc., which use the continuous change of the internal volume of the pump block to transport liquids. Other types of pumps include jet pumps, air lift pumps, and solenoid pumps, among others.
According to the conditions of use, chemical pumps can be divided into large flow and micro flow pumps, high temperature pumps and cryogenic pumps, high pressure pumps and low pressure pumps, high-speed pumps and low-speed pumps, accurate metering pumps and high viscosity pumps.
According to the conveying medium, chemical pumps can be divided into water pumps, corrosion-resistant pumps, impurity pumps and oil pumps. Among them, water pumps include clean water pumps, boiler feed pumps, condensate pumps and hot water pumps; Corrosion-resistant pumps include stainless steel pumps, high-silicon cast iron pumps, ceramic acid-resistant pumps, etc.; Impurity pumps include slurry pumps, sand pumps, sewage pumps, etc.; Oil pumps include cold oil pumps, hot oil pumps, etc.
According to the chemical use, chemical pumps can be divided into process pumps, utility pumps, auxiliary pumps and pipeline pumps. Among them, process pumps include feed pumps, return pumps, circulating pumps, etc.; Public works pumps include boiler pumps, cooling tower pumps, etc.; Auxiliary pumps include lubricating oil pumps, sealed oil pumps, etc.; Pipeline pumps include pumps for oil pipelines, pumps for loading and unloading trucks, etc.
In addition, according to the characteristics of the conveyed liquid, chemical pumps can also be divided into centrifugal pumps, gear pumps, screw pumps and diaphragm pumps. Centrifugal pumps are suitable for conveying low-viscosity liquids, gear pumps are suitable for conveying high-viscosity liquids, progressive cavity pumps are suitable for conveying liquids with high viscosity, high temperature and high pressure, and diaphragm pumps are suitable for conveying volatile, flammable and explosive liquids.
In short, there are many types of chemical pumps, and the selection needs to be based on the actual needs and uses to choose the appropriate pump type and structure.