UNIT TO PRODUCED EXTRUDED CHIPBOARDS Russian patent published in 2011 - IPC B27N3/28 

FIELD: process engineering.

SUBSTANCE: invention relates to woodworking industry and may be used in production of extruded phenol formaldehyde resin-based chipboards. Proposed unit comprises extruder incorporating proportioner, guide device, heating plates provided with holes and distributors, collector with cavity formation devices with their working surfaces being provided with grooves communicated by through holes with inner space of cavity formation devices. To increase quality and reduce toxic emission, extruder heating plate holes and inner space of cavity formation devices are communicated with vacuum pump. Aforesaid proportioner is proved with tight casing while heating plates are communicated with tight inlet. Outlet of vacuum pump, tight casing and tight inlet are communicated with dust and volatile components trap. Said dust and volatile components trap is made up of spraying scrubber with its bottom section accommodating fluid collector provided with polypropylene filter. Scrubber top section accommodates confuser-diffuser devices with their tube space accommodating haydite filter nozzle. Scrubber is provided with absorbent feed line and sprinkling nozzles. Said absorbent feed line is communicated with fluid collector to form closed circulation system while sprinkling nozzles are arranged in every confuser-diffuser device.

EFFECT: production of extruded phenol formaldehyde resin-based chipboards.

2 dwg