Screw pumps are industry-recognized feeding solutions in drilling solids control and environmental engineering due to their ability to transport high-viscosity media. KOSUN’s screw pumps achieve stable axial fluid transport through the precise meshing of the rotor and stator. Addressing diverse operational needs, the company has launched the SWP and G series (including VFD models) to provide specialized advantages for various industrial applications.
Screw Pump Core Working Principles and Shared Technical Advantages
Whether for the SWP or G series, the core relies on the helical motion of a stainless steel rotor within an elastic stator cavity, creating volume changes in the suction and discharge chambers. This structure ensures that the liquid is pushed uniformly in an axial direction with low internal flow velocity and constant volume.
Due to the stable pressure, no eddy currents or agitation occur during the pumping process, which greatly protects the physical properties of the fluid. High-performance elastic materials form the stator. This design gives the pump unmatched wear resistance. It easily handles abrasive media with hard suspended particles. These pumps outperform other types in harsh conditions.
The sealing line formed by the stator and rotor meshing gives the pump a valve-like shut-off effect, even enabling multiphase mixing of liquids, gases, and solids.
SWP Series Screw Pump: Focus on Compactness and Economy
The SWP series screw pumps (such as the classic SWP-70) are the most common feeding solutions in solids control systems. Parameter comparisons reveal that this series is designed for greater lightweighting and integration.
The SWP-70 model features a 7.5kW motor and weighs roughly 300kg. This 2.1-meter-long unit fits easily into tight workspaces. Maintenance remains simple thanks to its compact, streamlined structure. It excels at feeding centrifuges when placed beside mud tanks. With a 0.3 MPa pressure rating, the pump delivers a 30-meter head. These specs cover most standard close-range transport tasks onsite. Engineering projects seeking a balance between cost and performance find it an ideal choice.
G Series Screw Pump: Designed for High Pressure and Long-distance Transport
In contrast, the G series screw pumps(such as G70 and G70-1) demonstrates more robust industrial-grade heavy-duty performance. The G70 series increases motor power to 11kW. It weighs 535kg, which adds nearly 80% more mass than the SWP series.
This increase in size directly translates into a leap in performance. The G70 series features a nearly 3-meter pump body. This longer contact line creates a higher working pressure of 0.6 MPa. It also doubles the head to 60 meters. These specs suit high-density material transport and long-distance discharge. The G series also handles tasks requiring high vertical elevations. Its strong pressure head ensures process continuity during large-scale dredging. This powerful output effectively prevents pipeline clogging in deep-well drilling projects.
Variable Frequency Technology and Precise Flow Management
The G70-1 VFD pump uses a Variable Frequency Drive to match motor speed with real-time demand. This precise control enhances separation efficiency and improves the quality of solid-liquid separation. Real-time speed adjustment allows operators to regulate flow based on centrifuge processing volume. Soft-start technology minimizes mechanical stress and reduces component wear. This design also maintains stable output pressure even at low rotation speeds. By eliminating frequent motor cycling, the VFD control extends the equipment’s service life.
Conclusion
Choosing the right screw pump is key to enhancing solids control efficiency. If your operational conditions prioritize conventional centrifuge feeding with limited space, the SWP series offers excellent cost-effectiveness. The G series handles long-distance transport and large processing volumes with ease. Its VFD models provide the precise flow regulation needed for complex tasks. These robust units serve as core pillars for stable project operations. Choose the G series for reliability in demanding industrial environments.