#openimpeller

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Reliable handling of raw waste water with optimized hydraulic efficiencies - more details in the new KSB video

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KSB developed a new waste water impeller which combines efficiency and reliability

The new and highly efficient D-max impeller from the KSB Group serves to handle fluids containing solid substances and long fibres, coarse solids as well as entrapped gas or air. © KSB SE & Co. KGaAIn a further expansion of its range of pumps suitable for handling untreated waste water, the KSB Group has developed a new radial multi-vane impeller in open design. The D-max impeller serves to handle fluids containing solid substances and long fibres, coarse solids as well as entrapped gas or air. It is therefore very suitable for handling untreated waste water, combined sewage, recirculated and heating sludge as well as activated, raw and digested sludge with a solids content of up to 8 percent. This impeller type is also suitable for transporting fluids with a high viscosity.At approximately 84 percent, the new impeller's best efficiency can be compared with the performance of closed multi-channel impellers. The free passage is at least 76 mm, which meets the requirements of many local plant operators. KSB's hydraulic experts employed the computational fluid dynamics (CFD) method to obtain detailed knowledge about the complex flow processes inside the pumps via computer-aided simulations. In addition to the computer-aided development of impellers, the pump manufacturer also conducted waste water tests in the laboratory as well as intensive field tests around the world, the results of which were then incorporated into the intensive development work.Each pump user receives an impeller trimmed to match the specified operating point. This is also common practice for multi-channel impellers. The D-max impellers are used in the Sewatec and Amarex KRT pump type series. They are suitable for both 50 Hz and 60 Hz electric motors. The maximum head is approximately 90 m and the maximum flow rate is approximately 2,800 m³/h. Depending on the composition of the waste water, an operator can choose between the materials EN-GJS-400-15 and 1.4517 as well as EN-GJN-HB555.www.ksb.com

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New IC Open Impeller i-Frame for air and gas handling, chemical slurries, waste liquids, and food and beverage applications

Goulds Pumps announce the latest addition to its diverse portfolio of ISO standard pumps: the ITT Goulds Pumps IC Open (ICO) Impeller i-Frame pump. Engineered to handle chemical slurries and waste liquids, as well as challenging food and beverage applications, the ICO augments the standard IC pump design with an open impeller for enhanced performance handling solids. This new feature also makes the ICO ideal for air- and gas-handling applications.

Available in 34 sizes and three different materials, ICO is built to ISO 2858 dimensions and the high-performance standards of ISO 5199. In addition to the open impeller, the pump features flanges drilled to DIN/ISO or ANSI, plus a modular design of four bearing frames, which maximizes interchangeability across its 34 sizes. Some other key product highlights include: Optimized hydraulic design for maximized performance and reliability Accommodations for flows up to 400 m³/hr and heads up to 150 m at temperatures ranging from -40 ºC to +280 ºC Cyclone seal chamber with improved heat removal for longer seal life plus a patented spiral groove design that removes solids from the sealing area, reducing the need for flushing and maintenance Heavy-duty i-Frame Power Frame to help prevent pump bearing failures and expensive pump downtime Stainless steel shafts for easy maintenance Modular design and interchangeability with all IC power end parts to help reduce customer parts inventory sensor for continuous machine health monitoring and early detection of machine failures     Read the full article