Disc Centrifugal Slurry Pumps
Optimized Operation of Apex Filter Press Pumps with Advanced VFD Technology
Apex Filter Press Pumps are engineered to suit a wide range of filter press sizes and are equipped with cutting-edge Variable Frequency Drive (VFD) technology. This technology allows for variable speed operation, initiating with high flow rates and low pressure to begin the filter cake formation. This crucial step prevents premature clogging of the filter cloth by avoiding the early development of a dense, impermeable layer of solids.
Throughout the filter press filling cycle, the VFD controller seamlessly collaborates with the pump to automatically and progressively increase the feed pressure. This gradual pressure escalation, which can be adjusted based on the slurry characteristics and solids concentration, ensures optimal filtration efficiency.
Typically, the process starts at a low pressure of 25 PSI and increases to a shut-off pressure of approximately 100 PSI, depending on the specific requirements of the filter press. Once the target pressure is achieved, the pump shuts off automatically, ensuring precise and efficient operation.
This automated pressure adjustment enhances filtration efficiency and extends the lifespan of the filter cloths by preventing clogging and ensuring consistent filtration quality. The flexibility of the Apex VFD system allows for seamless integration with any existing or new filter press setup, making it an adaptable and versatile solution for improving industrial filtration processes.
Superior Durability Against Abrasive Liquids
Abrasive liquids containing suspended particles pose a significant challenge by rapidly wearing down pump surfaces. The Apex rotating disk pump addresses this challenge by utilizing a fluid flow design between two parallel disks, creating a boundary layer—a relatively stable, quiescent layer adjacent to the disk walls. This innovative design minimizes abrupt directional changes and rapid accelerations, preserving the protective properties of the boundary layer and significantly enhancing the pump’s resistance to abrasion. This results in exceptional durability and reliability when handling abrasive slurries, ensuring long-lasting performance in harsh conditions.
Low NPSH Requirement for Optimal Performance
In demanding environments like those in Canada, pumps often face challenges related to variable pressure distribution caused by vanes moving through fluids. This can lead to cavitation, particularly at the point of lowest static pressure, typically at the vane outlet. The Apex Disk Pump, however, features disk impellers with inherently low Net Positive Suction Head Required (NPSHR) characteristics. The Apex impeller is also equipped with an integral axial flow inducer that further enhances its low NPSH capabilities, making it an exceptionally robust solution for challenging applications managed by Pump and Dredge Direct in Canada.
The Apex Disk Pump is meticulously engineered to generate a uniformly tangential pressure field across the system, ensuring that the only pressure gradient present is positive. This uniformity is essential for maintaining the pump’s efficiency and longevity, especially in regions with severe operational conditions like Canada.
Optimized Performance with Highly Viscous Liquids
Handling highly viscous liquids often poses significant challenges for traditional vaned impellers, reducing efficiency and capacity and increasing NPSH requirements. Viscous fluids, especially those around 500 SSU, can drastically diminish the performance of conventional impellers.
In stark contrast, the Apex Disk Pump excels in managing highly viscous fluids without suffering these performance drawbacks. The pump’s innovative design ensures proper disk spacing to accommodate fluids of varying viscosities. This unique feature allows the Apex Disk Pump to efficiently handle fluids with viscosities ranging from as low as water to as high as 400,000 SSU.
Furthermore, the Apex Disk Pump’s design ensures that flow characteristics adapt to the fluid viscosity—remaining marginally turbulent for thinner liquids and transitioning to laminar flow for more viscous substances. This adaptability significantly enhances the pump’s efficiency and guarantees consistent performance across a broad spectrum of fluid densities and viscosities, making it a versatile and reliable choice for various industrial applications.
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