Log Spray System
Crusader’s engineers were commissioned to study the problems associated with existing log sprayers in service, and to design and build a purpose built system. It soon became apparent that most systems were designed and fitted around existing conveyor systems as an after thought, using retrofitted lineal spray systems.
Above is a photo of the customized log sprayer that Crusader designed, manufactured, installed, and commissioned for a client in New Zealand. The PLC controlled plant also includes a proportional chemical mix system, nozzle and flow monitoring system and a specially designed stainless steel sludge filtration separation system attached beneath the chamber.
The spray booth itself was constructed out of 8mm steel. Inside are specially shaped powered rollers that are designed to minimise damage to the logs as they pass through the chamber. A single ‘I’ beam runs the entire length internally, onto which a runner and chain block can be connected to lift the heavy rollers out for maintenance.
The sprayer utilizes multiple spray nozzles mounted externally for ease of maintenance, that ‘snap’ connect onto flexible hoses, which inturn are ‘snap’ connected onto two stainless steel manifolds either side of the chamber. The spray nozzles themselves are computer modelled to ensure complete chemical coverage of the log as the log passes through the chamber. At each end of the spray chamber is a chemical impervious spray curtain to control misting, that the logs push aside as they move through.