FEEDERS
Dinnissen Process Technology introduces Smart Discharge for direct infeed from big bags
Many companies in the animal feed industry who need to feed micro ingredients, premixes and other ingredients from a holding location into processing lines do so only from silos. Although this is a classic solution, it’s not always a practical one for storing and handling smaller quantities or ingredients that are sensitive to contamination. Dinnissen is therefore introducing a new system which makes it possible to feed ingredients into a processing line directly from the big bag. The new system also offers advantages to companies looking for greater flexibility or for a cost- efficient solution to a shortage of silos or premix storage units. Manufacturers of animal feeds are using an increasing variety of (macro or micro) ingredients and premixes stored at an appropriate location in order to produce an even greater variety of high-quality or tailor-made products. In particular when ingredients are involved that are used in relatively small quantities (300 g/h to 8000 k/h), a classic storage solution using silos or premix storage units has many disadvantages. Products often have to be transported to silos located high up in the plant, and silos as well as transport lines can become contaminated with residual materials. In addition, the use of many different types of ingredients requires the installation of many small silos and therefore a significant investment. Dinnissen’s new infeed system feeds ingredients for compount feed, fish feed and petfood production directly into the system from the big bag. To do so, the big bags are fed into a big bag emptying station and automatically connected to a dosage/weighing station and a pneumatic Slow-Flow transport system from Dinnissen. After the ingredients have been automatically dosed or weighed out, they are fed into the mixer via a vacuum-assisted or blower type transport. To accomplish this, the Slow-Flow transport system uses low air speeds and a relatively high
Ajax Equipment Assists HSL Dust Explosion Research
Solids handling equipment manufacturer, Ajax Equipment has supplied the Health and Safety Laboratory (HSL) with a screw feeder and hopper for research into dust explosions in small vessels. The single variable screw feeder is being used to feed dust into a dust collector to assess the explosion risk. HSL, an agency of the Health and Safety Executive (HSE), is undertaking the project to establish dust explosion venting requirements in vessels having volumes of less than 0.5m3
.
The Ajax steep walled hopper and variable pitch screw are designed to offer best flow and feed reliability for a range of dust materials, ensuring the 100mm diameter screw is completely filled when feeding the dust powder into a cyclone for explosion testing. The HSL project on the risk of dust explosions in small vessels (less ) is expected to be completed in March 2012.
than 5m3
For more information on Ajax Equipment screw feeders and hoppers call 01204 386723, Email:
sales@ajax.co.uk or visit
www.ajax.co.uk
loading factor, making it very energy-efficient. As a result, Slow Flow Conveying is very suitable for hygienically, carefully and efficiently transporting bulk solids that are fragile, sticky or sensitive to wear and tear. Feeding the ingredients in directly from the big bag prevents contamination and build-up of residual materials in transport lines and cells. The new system offers cost savings and flexibility to producers using many different (expensive) micro-ingredients, premixes and other products held in interim storage units. As the direct infeed system also prevents the build-up of residual products and contamination in transport lines, the end product quality is also better. Finally, such a system is also very cost-efficient. Users also have the option of feeding ingredients into the system directly from 25 kg bags. The bags are then first placed in a Dima bag discharge station supplied by Dinnissen Process Technology (based in Sevenum). The maximum infeed capacity for feeding ingredients directly from big bags or bags vary somewhat, but lies between 10 and 20 tons per hour.
www.dinnissen.nl.
High Accuracy
Dynamic Air has developed the GYRO Bin Activating Feeder which produces 360 degrees of pure gyratory motion to positively and more reliably feed and/or discharge granular materials from bins, storage silos and hoppers at any
desired feed rate. At the heart of the GYRO bin activating feeder is the drive that produces 360 degrees of radial force, creating a uniform circular motion on all parts of the feeder. It is this annular radial vibratory motion which imparts the ultimate force, assuring a constant and reliable material flow. This also minimizes any material stratification in the storage silo or bin and develops a predictable and positive flow of material upon demand. A unique feature of the GYRO Bin Activating Feeder is that the silo or bin head of material is completely supported by the upper activation cone, thus assuring a positive cut-off of material flow when the feeder is deactivated. The feeder can also be started and stopped as required and material will not accumulate in the lower discharge cone, eliminating packing or plugging problems. The GYRO Bin Activating Feeder is well suited for almost any dry bulk granular material, irrespective of particle size and/or bulk density. It can operate either continuously or as a start and stop operation as might be required for more sophisticated process applications. Also available is an optional variable speed drive, which provides a variable material discharge rate with up to a 400 to 1 turndown ratio for batch weighing operations.
www.krausvibratory.com/products/gyro.html Email:
info@dynamicair.com www.dynamicair.com
Bulk Solids Today 31
Weighing and Batching
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