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Dinnissen's new hammer mill offers producers of feed and pet food greater capacity and flexibility

Published on 30 January, 2014, Last updated at 14:11 GMT
Dinnissen's new hammer mill offers producers of feed and pet food greater capacity and flexibility

Dinnissen Process Technology specializes in the development and production of process technologies for the feed, food, pharma and chemical industries. Dinnissen offers a wide range of crushers, hammer mills, roller mills, and knife mills for grinding, crushing and micronizing a wide variety of ingredients. Dinnissen's newest hammer mill is equipped with increased screen surface, extra-large grinding panels, and an automatic screen exchanger in combination with a wide range of screens. As a result, the newest hammer mill provides clients with significantly increased grinding capacity, less downtime, and greater flexibility.

Ingenious screen panel construction results in increased screen surface
Hammer mills are especially suited for grinding soft to medium-hard products such as grains, raw ingredients containing proteins, and minerals down to particle sizes of between 3 mm and 150 µ. In Dinnissen's hammer mills, freely suspended hammers rotate at high speed inside the grinding chamber. Depending upon the components being ground down, single hammers or double hammers can be used. The centrifugal force produced by the rotating hammers crushes the product into smaller particles against special grinding panels on the inside of the grinding chamber, after which the processed product passes through special screening panels before exiting the hammer mill. The screen surface and perforations determine the capacity, quality and effectiveness of the screening process, which is why Dinnissen has made significant investments in developing innovative solutions in this area.

Increased surface area of grinding panels provides greater grinding capacity
Dinnissen's new hammer mill features an ingenious and innovative design which significantly increases the surface area of the grinding panels as well as screen panels inside the hammer mill. This results in increased grinding as well as screening capacity. In addition, the screen storage facility is fitted with an extra-wide chamber, making it easier to carry out maintenance and replace damaged screens whenever necessary. This in turn reduces downtime during maintenance stops and increases the overall efficiency of the new hammer mill. The maximum speed of the new system is 1500 revolutions per minute, which means that it has a longer usable lifetime and is more energy-efficient than its predecessors. The built-in magnets and traps for unwanted hard objects also prevent damage to the screens from the presence of iron objects or other hard materials. This also increases the efficiency of the new hammer mill at a very low noise level.

Mechatronic screen exchanger offers optimum flexibility
Dinnissen has designed a new and innovative screen changing system for its newest hammer mill, which offers increased speed, ease-of-use and reliability to clients who regularly switch between different ingredients and product specifications. The automatic screen exchanger has enough space for 4 to 6 sets of different screen panels, making it possible for the system to automatically select the appropriate screen perforation and thereby grind the raw ingredients into the desired product within optimum structure and particle size. The mechatronic screen exchanger system automatically chooses and places the correct set of screen panels in the hammer mill. After completion of the production process, the screen exchanger also removes and stores the set of screens within 40 seconds. This makes it possible to change from one set of screens to another very quickly and efficiently and greatly reduces downtime. It also greatly reduces the risk of the wrong screen panels being used. The automatic screen exchanger can also be fitted with a screen detection system, making it possible to identify and report the right selection to the control room.



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