Explosion-proof spray nozzle

When it comes to granulating, drying, agglomerating or coating food ingredients by fluidized or spouted bed technology, spray nozzles play a key role in quality control. With its hygienic, explosion-proof removable spray nozzles, particle design specialist Glatt Ingenieurtechnik sets new standards in process safety and plant availability.

If unexpected quality issues arise during the fluidized bed process it might be because of a change in the nozzle spray pattern. Sticky or crystallizing spray fluids such as salts or sugar may induce fluctuations in the spray pattern, and also hygroscopic products which sometimes remain in the plant during downtime.  A spray unit consists of a fluid-carrying inner tube and an outer tube that supplies gas or compressed air. Both are grounded by an easily detachable connection.
For safety reasons, when cleaning the spray nozzles, the inner tube with the fluid nozzle must not be removed from the spray lance until the compressed air supply is stopped. Usually additional arrestor wires or chains have been used as a safeguard against unauthorized disassembly during operation. Safety is only provided when arrestor wires or chains are fixed. The new “key and lock” solution from Glatt Ingenieurtechnik consists of protected recesses and catch pins that secure the inner tube, eliminating existing risks completely. Even if the operator omits to turn off the compressed air, the inner tube will still be retained. Only when the air supply is turned off can the tube be released, by lifting and rotating the nozzle.
Due to the very small opening in the empty outer tube, it’s not longer necessary to stop production. The new nozzle device decreases plant downtime, increases personal, operational and occupational safety, and reduces possible operating errors. In addition, the empty outer tube can be washed immediately during the cleaning process. With its explosion-proof nozzle, Glatt Ingenieurtechnik offers new and existing customers a hygienic retro-fit-compatible component that is easy to operate and clean.