DG84A Screen Sliding Sleeve Closing Tool

The DG-A screen sliding sleeve closing tool is used for the closure of the ST screen sliding sleeve in RFMS new multi-layer high- speed fracturing system, which can realize the one-way closure of the sleeve, and the DK-A sliding sleeve opening tool can realize the switch of the sleeve. The switch tool can open and close the sliding sleeve under the joint action of the unilateral switching claw and the spring device. The upper lift column will close the sliding sleeve, and will not open when lower. After the sliding sleeve is closed, the unilateral grip of the switch tool is retracted under the action of the limit sleeve, so as to fill the sliding sleeve. The elastic mechanism and unidirectional property of DK-A / DG-A screen sliding sleeve switch tool can effectively prevent the misswitch of ST sliding sleeve when it is lifted and lowered. At the same time, its shear device can realize the recovery of the tools in the emergency state.