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For Petfood Manufacturers
by Del Williams, Technical Writer, USA
o promote food safety and sanitary compliance, pet food manufacturers are increasingly seeking the ability to Clean-in-Place (CIP), an automated method of cleaning the interior surfaces of tubular drag conveyors without disassembly. Now, with the advent of mobile tools like an innovative ‘smart cart’ that quick-connects to any tubular conveyor and enables simple, customisable ‘single button cleaning recipes,’ CIP is becoming easier, faster, less labourintensive, more repeatable, and almost fully automated. Tubular drag conveyor systems gently move product through a sealed, enclosed tube using a drag cable and circular discs pulled through on a loop, so are ideal for delicate items. Designed to handle a variety of different forms and sizes, from kibble to seeds or pellets and nutrients, tubular conveyors maintain both quality and proper proportions. In a wet CIP process, the system is flooded with water, flushed, rinsed, cleansed, and thoroughly sanitised. Although the process is very effective, streamlining its automation and simplifying the process for all of a facility’s tubular drag conveyors has been a priority for leading innovators in the industry. “The standard system required port hookups to water lines and installing piping. The processor also had to make decisions such as which water temperatures to utilise, or whether to use a cleaning solvent - and the correct amount to add manually,” says John Adair, Engineering and Quality Director for Cablevey Conveyors, an Oskaloosa, Iowa-based conveyor manufacturer that has designed, engineered, and serviced enclosed cable and disc tube conveyors for 50 years, and is in more than 65 countries.
The smart solution
To simplify the wet cleaning process, Adair and his engineering team at Cablevey have developed a small, mobile ‘smart cart’ with integrated water line hookups that a single technician can
easily take to any tubular drag conveyor in a facility. The cart is specifically designed to be a fraction of the size of similar carts on the market to facilitate mobility. When the cart is in position and connected to water lines, the CIP process is automated and controlled by a programmable logic controller (PLC) that reduces the need for manual labour and virtually eliminates the risk of improper cleaning. “Once it is set up, all you do is press a button and it will bring in the required amount of water at the correct temperature with the necessary amount of solvent for cleaning,” says Adair. The smart cart is designed to store and utilize pre-programmed CIP recipes to flush various residual materials from the tubular drag cable conveyors in a facility before new production runs. The cleaning recipes enable even those with very little training to use the cart. This is helpful in today’s tight labour market and allows the technician to move on to other tasks once the cleaning process begins. The use of easily executable recipes ensures a superior, repeatable clean that essentially ‘error proofs’ the process. This is particularly important when the technician may be new or less familiar with the production equipment. “Depending on the product being conveyed, sometimes all you need is a wet rinse, or sometimes you need a specific cleaning solvent. All that information is saved, so after the first cleaning, it can be automatically repeated. Just push a button to start the appropriate recipe, whether you have one conveyor running multiple products, or dozens of conveyors running various products,” says Adair. To meet strict compliance standards, the smart cart also documents all critical CIP information such as water volume and temperature, chemicals used, and cleaning time by date in an easily retrievable data log. Since decreasing production downtime between conveyor cleanings is a priority for pet food manufacturers, Cablevey provides new capabilities with the cart that expedites the CIP process. Currently, the CIP process floods the tubular conveyor system
20 | November 2023 - International Petfood
