Hopper loading is a popular application for our Line Vacs. Last week I spoke to two different companies with very similar application requirements to do just that.
One company manufactures food processing equipment. They were working on a project for a customer of theirs who needed to convey various small food pieces such as crispy rice, nuts, and pretzel bits from bulk packaging into a hopper. The total distance to be conveyed was 20ft, and they were looking for a material flow rate of only a couple of pounds per minute. So, I recommended our model 6964, 2″ Line Vac Kit, made of Type 303SS.
The Line Vac will have no problem conveying over the 20ft distance, and will more than adequately convey the required amount of material in the desired time frame. If the travel velocity of the food pieces is too high and begins to turn into crumbs, they can use the included pressure regulator to decrease the flow rate and velocity to a more manageable level. The kit also includes an air filter to remove any water and dirt contaminants that may be in the air line.
The other customer I spoke to was a packaging machinery and materials manufacturer. They were looking to convey rice from a bulk tub up to a hopper for packaging. Their distance was only 12ft, just a bit less than the other customer. However, they wanted the highest flow rate we could provide. We do have Heavy Duty Line Vacs which have very high flow capacities. However, they are not food grade. This customer had more strict material requirements, and required Type 316 Stainless Steel rather than our standard, Type 303SS. So, I recommended the model 6964-316, the same unit as for the other application, except in 316SS. The 2″ Standard Line Vac will provide the best combination of high vacuum level and high material flow rate, for the best performance.
Both customers will be satisfied with the low-consumption, low maintenance, and hands-free operation that the Line Vacs will provide, to convey the food up to the machine hoppers.