December 2007 - Product of the Month
Rotor Detection System for Rotary Valves
- For critical rotary valve applications such as for food or infant formula manufacture when rotor scrapping must be immediately detected to prevent the contamination and downgrading of the product, Nu-Con has the solution.
The “Rotor Detection System” uses a modified valve design in which the rotor is electrically isolated from the housing, and both elements are connected to a controller via a slip ring commutator. The controller includes a isolated switch amplifier to remotely monitor the system using an intrinsically safe circuit.
If there is any contact between the rotor and the housing then the system detects this and a warning signal contact is made, which can be used to either send a warning to the operators via the plant SCADA system, or automatically shutdown the valve.
Coupled with this Nu-Con have developed a bottom mounted Easy-Slide Rotor Support System (photo shown). A rotor support adjustment mechanism has improved the rotor support so that during assembly rotor scraping is eliminated.
