WSF windshifter

The Nihot WSF windshifters is the ideal solution for light packaging waste applications where only plastic film and foils need to be recovered we offer and supply our dedicated WSF windshifter. Our WSF windshifter and Rotary Air Separator (RAS) combination is the ideal solution for capturing plastic film in tight spaces and can be installed into different locations within the waste installation. It’s a great option for any system, but the flexible footprint also makes it a great candidate for retrofits.

The typical characteristic of a diagonal windshifter is the use of a blow nozzle. About 60% of the aspirated air is returned back into the system. This allows for a smaller dust filter. But more over it helps to control the separation efficiency since we can fully adjust the blown air separately from the aspirated air. The WSF windshifter offers high separation efficiency with flexible footprint and can process fraction sizes of 20-400 mm and is mainly used in light packaging waste (DSD/PMD), PET, MSW and compost. Material is pneumatically conveyed, creating a great deal of flexibility for conveyor placement and duct routing.

Principle separating process

The windshifter is a combination of a recirculation fan, a separation unit (the actual windshifter), and either a Rotary Air Separator (RAS) or Combi Separator. This configuration is individually designed and ideal for any operation, especially in tight spaces and in retrofits. A RAS can be installed for light weight fractions up to 3 t/h. When more capacities of light weight materials are applicable the Combi Separator can be used instead.

The picture below shows the operating principle of the WSF. The separation unit of the windshifter has a diagonal design. In the diagonal shifter unit, the heavy materials are separated from the light materials.

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