Method and apparatus for monitoring wear of and repairing shaker screens

摘要

The invention is an apparatus for cleansing and monitoring wear of screen cloths (1) comprising: a) a feeding device (100) for used or contaminated screen cloths (1) to b) a cleansing unit (4) arranged for receiving and cleansing said screen cloth (1), c) a preparation unit (140) arranged for preparing said screen cloth (1) for optical inspection in d) an optical inspection station (120) arranged to identify one or more damaged portions (6) of said screen cloth (1) and with a registering device for registering positions (7) for said damaged portions (6), e) a measuring device (62) for measuring and registering an extent of said one or more damaged portions (6) extent and degree of damage, f) a repair unit (70) arranged for mending one or more of said damaged portions (6), g) a feeding out unit (200) for feeding out said repaired screen cloth (1).

主权项

1. A method for monitoring and maintenance of wear of shale shaker filter screen frames with screen cloths, the method comprising the steps of:
providing a used or drilling liquid contaminated filter screen frame screen cloth to a filter screen frame magazine; engaging said filter screen frame in said magazine using a movable main manipulator element; feeding forward said filter screen frame to a cleansing unit and cleansing said filter screen frame with said screen cloth; moving said filter screen frame to a drying unit using said main manipulator element and drying said filter screen frame; moving said filter screen frame using said main manipulator element to an optical inspection station and inspecting optically said screen cloth; using an algorithm in a computer identifying damaged portions of said screen cloth and registering said damage portions' position in a computer memory; determining in said algorithm said damaged portions' degree of wear or damage and determining whether said worn or damaged portions qualify for being repaired or replaced; moving said filter screen frame to a repair station with a repair manipulator using said main manipulator element; replacing said damaged portions qualified for being repaired or replaced by exchanging a screen plug thereof with a replacement screen plug provided in a screen plug magazine by using said repair manipulator; moving the so repaired filter screen frame back to said magazine, wherein said repair manipulator further comprises a repair manipulator head arranged for engagement with the screen plug.