Patent ID: 9180493
Filing Date: 2015-11-10
Classification: B07B,F16B

Abstract:
1. A cell plug filter for a shaker screen filter for a well fluid shale shaker, wherein said shaker screen filter has a main frame arranged for being mounted in said well fluid shale shaker for screening of a well fluid mud, wherein said mainframe is subdivided into a plurality of smaller cell frames, wherein said cell plug filter comprises: one or more layers of screen cloth arranged on top of at least one support layer, wherein each cell plug filter comprises a cell plug filter frame arranged to be held in said cell frame in the main frame, wherein at least one cell plug filter frame comprises a locking mechanism arranged for locking said cell plug filter frame, upon desire, in a preferred position in said cell frame, correspondingly releasing said cell plug filter frame from said cell frame, wherein said locking mechanism is preloaded in a locking position relative to said cell frame so that said locking mechanism in a passive or partly defect condition is locking, and said preloading has to be counteracted to release said cell plug filter frame from said cell frame, wherein said locking mechanism further comprises a first, outward facing locking profile along two or more edges of said cell plug filter frame arranged for engagement with a corresponding second edge profile along said cell frame in its passive state, and wherein said locking mechanism further comprises a displacement mechanism arranged with a screw mechanism, said screw mechanism comprises an assembly screw held through one or more beams in said support layer, said displacement mechanism comprises a link arm structure extending between, and is fixed to, said locking profile and a threaded central sleeve, and said threaded central sleeve is arranged for being moved along an axial direction of said assembly screw for moving said link arm structure thus retracting said first locking profile out of engagement with said second edge profile of said cell frame at said two or more edges of said cell plug filter frame simultaneously.