Squeeze Through Mixing Blade Assembly with Trailing Scrapers

Pat #7,914,200 granted Mar 29, 2011

There are numerous designs for scraped surface agitators. Some are intended to aid in heat transfer and cause flow of thixotropic materials. Others, intended for use with highly viscous materials, are meant to force batch turnover while aiding heat transfer. All share the purpose of heat transfer from scrapers attached to a bar or rod rotating along the periphery of the mixing tank.

The unique feature of the Squeeze through mixing blade is that it is spaced from the heat transfer surface and configured such that feedstock material is directed and then squeezed between the mixing surface and the heat transfer surface to simultaneously create shear and heat transfer prior to being removed by the trailing scraper.

Squeeze through mixing technology, although common in high viscosity mixers, has now been teamed with easily removable, trailing scrapers to further improve feedstock dispersion.

The design has also proven easier to clean because of more open access to the whole assembly once removed from the mixing tank.