Archive for 2018

Single-flow twin screw pump for industrial applications

Wednesday, February 7th, 2018 von admin

FDS series

These twin screw pumps are available in five sizes made of stainless steel or cast steel. These pumps are capable of pumping a wide range of products, from volatile liquids, such as petrol, to high viscous bitumen. The pumps’ simple construction allows for quick seal replacement and repair of the screws. The two mechanical seals can be positioned on the suction or discharge side.

Single-flow pumps feature two intermeshing, contactless feed screws, designed with specific pitches, depending on the application and pump capacity.

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Pump field services

Friday, February 2nd, 2018 von admin

Large pumps, such as those operated in the

  • oil and gas,
  • power generation and
  • water industries

perform a crucial role and represent a significant investment by the owner. Safeguarding these assets and maintaining efficiency and reliability are vital for the continued productivity of the application. Very often, when it comes to maintenance, the choice is between the original equipment manufacturer (OEM) or an independent service provider (ISP), but John Murray describes here that it is possible to have the best of both worlds.

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What To Consider When Selecting a Filter-Press Pump

Friday, February 2nd, 2018 von admin

Fig. 1 A typical chamber filter press being fed by a Almatec high-pressure air-operated double-diaphragm (AODD) pump

Technical paper by Peter Schüten:

High-Pressure Air-Operated Double-Diaphragm (AODD) Pumps Deliver The Operational Advantages Necessary For Optimized Operation Of Chamber Filter Presses.

In many industrial processes that feature the handling of liquids, the substances that are being transferred may occur in an aqueous or “muddy” state, with the liquid portion needing to be removed. This liquid-removal stage may take place during the production process – for example, in the filtration of edible oils or yeast solutions – but it more frequently occurs at the end of a process like wastewater treatment when the waste sludge that has formed must be withdrawn. Since the disposal of such sludges is calculated based on weight and volume, their thickening and drying is particularly lucrative for the processor. During the thickening and drying process, the sludges are treated using chemicals and/or physical processes so that the waste sludge forms into flake-like solids. After adjusting the pH level to neutral or alkaline via the use of milk of lime, the subsequent dewatering process separates the water for disposal, with the remaining volume of sludge significantly reduced.

The simplest technology for this process involves collection and thickening of the sludge through the use of gravity. However, it is significantly more effective to use technical drying methods via processes such as centrifuges and evaporators, or more commonly, chamber filter presses (Fig. 1).

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Top 10 posts on Δ p Global Online in January 2018

Thursday, February 1st, 2018 von admin

The actual Top 10 posts on Δ p GLOBAL Online:

  1. Richter Chemie‐Technik is welcoming Barbara Wladarz as Managing Director
  2. Predicting Performance Curves of Centrifugal Pumps In the Absence of OEM data
  3. Endress+Hauser opens of a modern office building in Santiago
  4. Sulzer doubles capacity of high voltage testing to improve repair times
  5. Packo/Daniatech: Pumping and Mixing with a Minimum of Energy Consumption
  6. Wilden Donates New AODD Pump To Mercy Ships
  7. Wilo: Green pumps for a green stadium
  8. TB Woods: Couplings in Pump Applications
  9. BauerGear: Efficiency comparison pumping system
  10. Mouvex: State-Of-The-Art Winery Embraces Innovative Technology

The actual Top 10 posts on  Δ p Online in German:

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Systematic flow metering – instrumentation for water supply in desert region

Tuesday, January 30th, 2018 von admin

Aguas de Saltillo, the water utility company which serves the city of Saltillo in Mexico, is responsible for supplying drinking water to a population of around 850,000. To ensure a reliable supply in this arid desert city, the company relies on a water network which draws from several reservoirs with the aid of process instrumentation from Siemens. The Sitrans F M MAG 8000 electromagnetic flow meters used here are outstandingly robust, durable and reliable, as well as requiring minimal maintenance. Over a hundred of these devices have now been installed in the Aguas de Saltillo network.

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Further growth for Endress+Hauser in China

Monday, January 29th, 2018 von admin

Only five years after the most recent expansion in China, the Endress+Hauser Group has once again increased production capacity with a third plant in Suzhou, 100 kilometers west of Shanghai. The 16,500-square-meter facility will help the Group meet disproportionately high growth in the Far East.

The opening of the new building, which is situated in Suzhou Industrial Park, a 450-square-kilometer campus that is home to more than 20,000 companies, was celebrated today in the presence of representatives from government and business, as well as customers and employees. The new plant will give the centers of competence for flow measurement engineering, liquid analysis and temperature measurement engineering additional capacity.

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Couplings in Pump Applications

Friday, January 26th, 2018 von admin

The Sure-Flex Plus couplings have new elastomeric sleeves providing higher performance and enhanced durability due to significant improvements in proprietary EPDM and Neoprene materials. Development testing confirmed that the new EPDM and Neoprene rubber sleeves enable a 30 % increase in the torque rating when compared to the previous generation sleeves. Sure-Flex Plus couplings provide torsional flexibility, while the 4-way flexing action absorbs virtually all types of

  • shock,
  • vibration,
  • misalignment and
  • end float.

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State-Of-The-Art Winery Embraces Innovative Technology

Thursday, January 25th, 2018 von admin

Technical paper by: Vincent Lejeau

Bailly Lapierre is one of the leading producers of Crémant de Bourgogne, a white or rose sparkling wine made predominantly from Pinot Noir and Chardonnay grapes. As is the case with many European wineries and vineyards, Bailly Lapierre exudes history and tradition. Not only can the company’s origins be traced back to the late Roman Empire when vineyards first began to flourish in the region, but its day-to-day operations are situated 50 meters (165 feet) underground in an ancient quarry that supplied the stone for some of the greatest works in France’s architectural heritage: the Pantheon, Notre-Dame de Paris and Chartres Cathedral. And if this wasn’t enough history, the location was also used as a German airplane hangar during World War II and as a mushroom-cultivation center until 1970.

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Efficiency comparison pumping system

Thursday, January 25th, 2018 von admin

An increasing number of pumps are now being run using speed control in order to be able to define the dynamic volume flow. The pump’s quadratic characteristic causes the motor load to decrease rapidly at lower speeds, which results in the level of efficiency decreasing significantly. Using the diagrams, it can be seen that the ideal workload for the existing asynchronous motor is not reached, due to operation at partial loads (approx. 30%) and speeds (75%).

If the pump is then equipped with a PMSM motor that has an extended efficiency range including partial load operation, the level of efficiency can be increased by approx. 12% in this example and savings of more than EUR 250 per pump per year can be achieved (depending on the number of hours‘ operation per year).

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KSB at Anuga FoodTec 2018 in Cologne

Wednesday, January 24th, 2018 von admin

In the limelight at the KSB Anuga FoodTec trade fair stand is, among others, the newly developed concept of a maintenance workstation for hygienic food pumps only. The so-called LSA (Life Sciences Applications) hygiene workstation is equipped with stainless steel surfaces, work benches that are easy to clean, and tools and clothing for use in this workstation only. Also, all lubricants supplied are FDA-approved. At the KSB stand in Cologne, such a workstation will be demonstrated by a service engineer performing maintenance work on a hygienic pump live at regular intervals.

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