| 摘要 |
A method for cleaning industrial parts includes sequentially and alternately exposing the parts to direct free-air impingement spray and immersion cleaning. Contaminated or dirty industrial parts stored or contained in a tote are cleaned by placing them in a rotating wash drum which includes a compartment for securing the tote within the wash drum. During the cleaning cycle, the wash drum rotates about a generally horizontal axis thereby tumbling the parts from the tote secured in the wash drum to a perforate wall section of the wash drum and then back into the tote. The parts are sprayed by a number of specially designed nozzles which are positioned within the wash drum and directed radially downward. The parts are alternately exposed to direct free-air impingement spraying when they are disposed on the perforate wall section of the drum and then to immersion cleaning when they are contained within the tote. An immersion bath accumulates within the tote from the spray while the tote is in the lower arc of the drum's rotation. The nozzles are preferably stepped expansion nozzles which disburse superheated water with controlled vaporization to create high velocity droplets impinging upon the contaminated parts. The method of this invention includes filtering and collecting the water from the wash drum for recycling and reuse within the system. |
