Dinnissen's Centrifugal Sifting machine makes it possible to sift large quantities of product quickly and accurately. The centrifugal force in the rotating, cylindrical sieve ensures that the product is sifted evenly.
The Centrifugal Sifter is ideal for processing varying amounts of product. Thanks to the various setting possibilities and mesh openings between 250 and 2000 µm, different capacities -from a few kilograms per hour up to more than 39 tons per hour- can be processed with a single machine. The centrifugal force in the rotating drum ensures that the product to be sifted is pressed against the perforated drum wall. Only the product particles that are small enough pass through the holes in the drum wall. Depending on the type of product and the required size of the sifting surface, Dinnissen provides a solution that meets the desired capacity and integration into existing systems.
In the feed and food industry, the requirements in the field of safety and hygiene are becoming increasingly strict. The machines used in these industries must also meet high standards. A Centrifugal Sifter from Dinnissen is designed to meet all hygiene and safety requirements within the sector. Centrifugal Sifters, for example, can be supplied with approval for ATEX Zone 20, which means that the sifter can also safely process explosive substances. For example, sifting machines that are integrated within a pneumatic process must meet additional requirements with a design pressure of more than 0.5 bar overpressure. Dinnissen provides a Pressure-Equipment-Directive (PED) inspection and delivers the screening machine with an approved Notified Body certificate.
A Centrifugal Sifter from Dinnissen can process capacities from a few kilograms per hour to more than 30 tons per hour. Dinnissen also offers specific solutions for even larger product quantities. The capacity of the sifter depends, among other things, on the product that is to be sifted and the perforation diameter used for sifting. Mesh sizes can vary between 250 and 2000 µm, but very fine-meshed products of > 75 µm can also be processed by the Centrifugal Sifter.
Whether a nylon fabric sifter can be used for sifting the most fine-grained products depends on the product type and the specified requirements. If a nylon fabric sifter does not suffice, a stainless-steel sifter can be chosen. In addition, Dinnissen offers the option of ultrasonic technology. This is a high vibration frequency of the sifter, which - in addition to centrifugal force - contributes to the sifting process.
In a Centrifugal Sifter, there is a cylindrical sieve chamber that rotates on its axis. The product to be sifted enters this sifting chamber via a pneumatic conveying system or by gravity. Once in the sifting room, the product is pressed against the walls of the sifting basket by rotating motion. This principle is called centrifugal force. The walls of the sifting basket have perforation holes through which the product of the desired size can exit. Material and contaminants that are too large remain in the sifting room and are led to a separate exit of the machine. In this way, this residual material can be easily removed from the centrifugal sifter after the sifting process.
The various adjustment options ensure that the Centrifugal Sifter can be used for a wide range of product types, capacities, and environments. Dinnissen has already installed more than 500 Centrifugal Sifters for a variety of applications and therefore has a suitable sifting solution for every demand.
In addition to the Centrifugal Sifter, Dinnissen has developed the Wingdoor Sifter, with extra wide opening doors. We also have Vibrating Sifters and Rotating Drum Sifters in-house. We are happy to advise 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.
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.
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
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
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
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
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
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
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
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
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
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
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
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
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