When it comes to the manufacturing of food products, quality is a brand’s number one priority. The last thing that any company or quality assurance specialist wants to hear is the R-word: Recall.
One of these critical pieces of equipment within the food processing industry is the production filter sifter. In food processing, there is a plethora of potential contaminants that can find their way into your product stream: from natural contaminants such as weevils, flour beetles, their larva and eggs, hair (human or animal), wood splinters, and chips, bin scale, paper, string, sheet metal, bolts, and nuts. The list can go even further, but who really wants any of that in their food?
The filter sifter is vital to remove as many contaminants as possible from your food stream process.
Today the market has three popular filter sifter classification types:
1. Vibratory filters
2. Centrifugal filter
3. Gyratory filter
Vibratory filter Sifters
Vibratory filter sifters are considered to be low-cost sifters. Equipped with one or two vibration motors, eccentric masses on the lower and upper ends of the motion-generating component vibrate the machine around its center of gravity. These units are primarily utilized in single-pass, low-volume operations: 50 lb or less at one time. This makes the vibratory sifter an economical choice, which provides a relatively low-cost entry point.
Centrifugal filter Sifters
Centrifugal filter sifters were initially developed for wastewater treatment plants to break up (de-lump) solids and push them through a screen. Today, centrifugal sifters are the second most preferred sifter type in the food industry. The centrifugal filter sifter is designed to forcibly break down clumps that can be found in certain material types such as flour, sugar, salt, starch, etc.
Gyratory filter Sifters
Gyratory filter sifters filter contaminants better than any other sifting technology (vibratory/centrifugal). Gyratory sifters produce a horizontal gyratory sifting action, ideal for scalping, grading, or fines removal from dry free-flowing powders.
The three types of filter sifters material are wedge wire screens. A wedge wire screen is a welded screen designed to be highly durable and resistant to clogging. And they typically have a long service life.
The wedge wire screens are the best choice for high-capacity separation on large particles, especially in solid/liquid separation.
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