A Rotary Drum Sifter consists of an inclined rotating drum. The particles in the drum move downward by gravity. The drum has a sifting perforation through which the smaller particles fall. The larger particles are kept inside the drum. This type of sifter is mainly used for the sifting of pellets and chunks and is therefore extremely suitable for the processing of pet food.
Rotating Drum Sieve
Rotating Drum Sieve
Rotating Drum Sieve (3D)
Rotating Drum Sieve (3D)
Rotating Drum Sieve (3D)
Rotating Drum Sieve (3D)
Rotating Drum Sieve
Rotating Drum Sieve
Rotating Drum Sieve
Rotating Drum Sieve
Rotating Drum Sieve
Rotating Drum Sieve
Process:
Sifting & ScreeningWhile a Centrifugal Screening Machine mainly processes powders, a Rotary Drum Screening Machine is used for sifting grains and chunks. What makes the Rotary Drum Screener so suitable for this is its relatively low RPM of less than 1 meter per second. This prevents product damage and ensures compliance with the applicable ATEX guidelines.
We always aim for the most efficient sifting process possible, with as few resources as necessary and the best possible result. As desired, the sifter mesh of the drum is equipped with different perforation sizes to accommodate a variety of products. For example, the finest product particles can be separated in the first part of the sifting drum, to collect the desired product with the right size in the second part of the sifting drum. Larger chunks are discharged and returned to the process through a separate exit. This ensures that as little product as possible is lost in the production process.
A Rotary Drum Sifter (1 or 2 decks) can be equipped with different sifting perforations. A product can be divided into two groups (fine enough to go through the perforations and too large to go through the perforations), but for example also in three groups. In this case, at the top of the sifter, finer perforations are used through which only grit can pass. The further down the chunks or grains go, the larger the perforations become. The chunks that are the right size for further processing then fall into the lower section. The oversized chunks remain and can be brought back into the process.
The drum sifters are -depending on the desired capacity- available in various construction sizes. Extra-large types are also available for cleaning raw materials. In this variant only impurities are separated. Rotary Drum Sifters can be used for different materials. In addition to dried granules or chunks, more moist and sticky mixtures can also be processed by a Dinnissen Rotary Drum Sifter.
The Rotary Drum Sifter is an inclined drum with perforations in the wall. The product enters the top part of the drum. Through rotation and gravity, the product moves further and further down the drum. Only the product that is small enough exits the drum through the perforation holes. Often the perforations at the top of the drum are so small that only the grit can pass through them. Further down, the perforations are as large as the desired chunk or grain size. The oversized pieces remain in the drum. In a Rotary Drum Sifter, the separation is non-destructive, which means that both the fine and coarse product can be (re)used.
Download our brochure or the datasheet with all options, models, and measurements or freely contact one of our experts.
Which sifting solution works best depends on the product to be sifted and the desired result. Please also have a look at our Centrifugal Sifters, Vibratory Sifters and Wingdoor Sifters. We will gladly advise you on the best suitable solution, for the desired sifting result.
System integrator Dinnissen optimizes and innovates your production process with tailored solutions: developed, manufactured and tested in-house. From product intake, transport, dosing and weighing, mixing, grinding, sieving and packaging to full automation and control. We maximize the performance and efficiency of your entire process.
Supplied entire installation
Dinnissen is the first company we've worked with that delivers a total package. Because Dinnissen supplied the entire installation, including platforms and safety installations, the entire line is CE-certified.
Michel Kliphuis- Manager - Steinweg Amsterdam
Quadrupled production capacity
In collaboration with Dinnissen, we have quadrupled our production capacity from 3 to 12 tons per hour.
Harald Schmalwieser- Managing Director - Solan
Fully automated sampling
We considered several machine developers, but the high quality of the Dinnissen machines and the competence and commitment of the employees were decisive for us.
Arjan van Dijk- Project Manager - Ausnutria
Six-fold increase of total production
Production has gone from 3-5 tons per day to 30 tons per day. That's a six-fold increase in total production.
Michiel de Boer- CEO - Nöll & Co.
Drastically improved feed-quality
90% of our customers with laying hens have already switched to the new feed produced using the Pegasus® mixer and the Thermidor® system.
Kurt Egli- Former manager - Egli Mühlen
The importance of hygiene and safety requirements
Dinnissen fully understood the importance of hygiene and safety requirements in our industry. They went the extra mile by providing us with all the necessary documentation, all ATEX drawings, and full traceability.
Anton Vleeshouwers- Project Director - DSM
Filled three complete factories
Dinnissen has filled an entire factory for us with a complete production line, on three different occasions. They just get it right: from mixers and sifters to sampling and automation.
Erik Schut- Managing Director - Jonker & Schut
No challenge is too big
At Dinnissen, they think in terms of challenges, not problems. They don't give up and keep going until there is a solution that satisfies all parties.
Martin Sonneveld- Production Director - United Petfood Waalwijk
World player in process technology
To realize production processes of the best quality, we work closely with Dinnissen: One of the strongest players in the world in process technology and hygienic design.
Gerben Koopmans- Project Engineering Manager - Nestlé
Tailor-made solution for every problem
What charmed us most about Dinnissen was that they responded perfectly to our questions each time: they jumped right in and quickly came up with a tailor-made solution to each problem.
Jos Falvay- Project manager - Perstorp
Mixers have been running 30 years
Dinnissen machines may not be the cheapest in terms of purchase price, but in terms of value for money, there are none better. Our Dinnissen mixer has been running extremely reliably for 30 years.
Adwin van der Vorst- Directeur - VDV Group
Easily and safely changing sieve basket
The ease and safety with which the sieve basket can be changed were decisive factors in our choice for a Dinnissen sifting machine.
Mr. Kreuzer- Company Manager - Südstärke
Mixing time of 60 seconds per batch
Previously, we had standard times in the mixing process of 14 - 15 minutes. With the Pegasus® mixer we achieve a mixing time of 60 seconds per batch.
Lothar Pixa- Director - Planta
Increased capacity despite using 17 fewer mixers
The amazing part is that we managed to increase the capacity, despite using 17 fewer mixers.
Edward Depre- Project Manager - Group Depre
Service on weekends
One day there was an important issue and one of Dinnissen's engineers immediately took action during the weekend. I have never seen other foreign partners do this.
Mr. Kimio Aono- Founder - APTe Japan
Unique in preliminary work
What really makes Dinnissen unique, is the preliminary work. You can literally count every bolt and nut in the drawing.
Kenneth Gijzen- Maintenance & Engineering Manager - AAK Rotterdam
Process specialists unafraid to push boundaries
Dinnissen possesses expertise distinct from our in-house capabilities. They are process specialists unafraid to push boundaries and set limits.
Raymond Nolet- Founder - MiFood
Choice based on trust, feeling, and price
We made a choice based on trust, feeling, and price. In this total package, Dinnissen came out best.
Marcel van den Oetelaar- Proces Technologist - Vobra
Collaboration based on mutual respect
Our collaboration with Dinnissen is based on mutual respect and trust. We challenge each other to continuously innovate and improve
Stefan Kuijpers- Director - Vitelia
Didn't consider any other option than Dinnissen
When the mixers needed replacement and Dinnissen could do a one-on-one replacement, we really didn't consider any other option than Dinnissen.
Elmar Flach- Technical Specialist - Voergroep Zuid
Flexibility, cleaning, short mixing time, and a homogeneous end product
We also considered other options but on the points we considered most important - flexibility, cleaning, short mixing time, and a homogeneous end product - Dinnissen scored best.
Sam Dimassi- Owner - Nutri-Dynamics
Technicians, not salespeople
Dinnissen's representatives strive for the best solutions. They are engineers first and salespeople second.
Frans van Zutven- Founder and Director - Van Zutven
Customized mixers
Dinnissen thought along with us from start to finish. For example, they used existing drawings for these new mixers to save us costs in the engineering phase.
Pieter Gorter- Project Manager - ForFarmers
High-quality vacuum coaters
We chose to work with Dinnissen because they supply high-quality vacuum coaters that fit exactly within our production lines.
Arnold Balledux- Global Technical Head Animal Feeds & Vice-president Animal Feed & Protein - Olam Agri
