Introduction of Twin Screw Pump
Twin screw pump is a kind of positive displacement pumps that are widely used in a variety of industries for the transfer of liquids with high viscosity or containing solids. They are particularly useful for pumping viscous fluids, such as crude oil, heavy fuel oils, and asphalt, as well as for applications where product integrity is critical. After years of R&D and improvement, SeFluid’s STSP series twin screw pump has continuously improved its efficiency and quality. It has been used in many industrial fields that cannot be replaced by conventional centrifugal pumps, and has been highly praised by users.
Principle of Twin Screw Pump
Twin screw pumps work by utilizing a pair of intermeshing screws that rotate within a cylindrical chamber. The screws are designed in such a way that they mesh together and form a series of dynamic sealed surfaces between them. These sealed surfaces create a series of pockets or cavities, which trap the liquid and move it from the inlet towards the outlet of the pump. The close fit between the screws and the chamber walls ensures that there is minimal leakage of the liquid.
One of the significant advantages of twin screw pumps is their ability to handle a wide range of viscosities. The pump’s capacity is not affected by changes in the viscosity, making them ideal for handling fluids that range from low to high viscosity. Additionally, the pump’s design allows it to handle solids that are suspended in the fluid, such as mud or slurry.
Advantages of Twin Screw Pump
Twin screw pumps offer several advantages over other types of pumps. Some of the significant advantages include:
Twin screw pumps generate low pulsation, making them ideal for applications where product integrity is critical. The low pulsation also reduces the risk of damage to the pipeline or other equipment downstream.
Twin screw pumps are self-priming, which means that they can create a vacuum that draws the fluid into the pump without the need for external priming.
Features of SeFluid's Twin Screw Pump Series
The screw head is specially treated so that it is not easy to bite between the screw head and the pump body, which can improve the service life
The material of the mechanical seal is silicon carbide and hard alloy, and different materials can be selected as single mechanical seal and double mechanical seal.
The shaft is made of alloy material, which is specially treated to improve the resistance to compression and corrosion.
The gearbox body is made of 304 stainless steel, which meets hygienic standards.
The bearing adopts Japanese NSK, which can improve the service life of the machine.
The O-ring is made of high-temperature-resistant materials and can reach more than 200 degrees.
The inside and outside of the synchronous helical gear are processed by a grinding machine, and the pump can be rotated forward and reverse, which can reduce noise and make the operation more quiet.
Applications of Twin Screw Pump
Twin screw pumps are used in a wide range of industries for various applications. Some of the significant applications include:
Food and Beverage
Used in the food and beverage industry for the transfer of viscous fluids such as syrups, creams, and sauces.
Commonly used in the chemical industry for the transfer of viscous chemicals, such as adhesives, resins, and solvents.
Twin screw pump is ideal for the transfer of high-viscosity fluids such as creams, gels, and ointments.
Oil and Gas
Widely used in the oil and gas industry for the transfer of crude oil, heavy fuel oils, and asphalt.