When you think of blending the image of adding fruit and liquid into a machine to make a smoothie probably comes to mind. That’s for one, possibly two, servings of a product. Now, take that image and multiply it by several hundred. That’s how the process of industrial blending operates. Used to combine numerous materials into a batch which is consistent with its volume of color, texture, and other factors, industrial blending machines help to produce multiple products for the food, pharmaceutical, and chemical industries. While the ribbon mixer is the standard used in numerous industries, larger batches of product to combine require something called a dual shaft blender.
Basically, this type of blender is made of two tubs which sit side by side. In the middle of each tub sits a shaft. Hence, the name dual shafts. The shafts can be driven a number of ways. For example, one motor and a cross-over drive can turn the second shaft. Or, two different motors can run each shaft to turn them in the same direction, the opposite way, or in reverse.
In this type of blender, the two shafts can be so close together so each one pulls mixed product away from the other. Conversely, with individual drive motors on each shaft, you can work them against one another at different directors or speeds. The benefit of the dual shaft is it can use different blade styles found on other blenders. For example, one shaft can utilize a ribbon blade while the other can use a multi-blade mixer from a fluidizer.
If this is something you have been thinking of for your manufacturing floor, consider some of these items. First, what grade of stainless steel do you prefer? If you’re looking to minimize corrosion from the products your blending, consider 304 ss (stainless steel), as it contains molybdenum to prevent this situation. If you are food or pharmaceutical-grade plant do you want a low bacteria finish to mitigate potential health hazards? Also, look at your current volume to determine if you need a dual shaft blender that handles a standard or heavy duty load.
These are only some of the factors you want to consider. In the end, you want your Return on Investment (ROI) on the dual shaft blender to be higher than the initial cost. So, make sure you do your homework.