One plants case net scaffold, comprising a hollow form pedestal and an installation what pedestal into drainage cell. The pedestal include the underwater portion below a what water surface, the portion waterborne above a what water surface and one formed the what underwater portion into discharge outlet. This includes that an installation what should appear the what portion waterborne into draining control valve and one into discharge outlet to drive the driving mechanism into draining control valve into drainage cell, which can drive this to move between an open position and a detent position into draining control valve. Using the what portion waterborne is appeared to drive the driving mechanism into draining control valve, making operator, portion can be driven this and move between the open position and the detent position into draining control valve on the water, without underwater operation, therefore using upper time saving, laborsaving and safe.一種箱網浮架，包含一中空狀座體，及一安裝於該座體的進排水單元。該座體包括一位於水面下方的水下部、一位於水面上方的水上部，及一形成於該水下部的進排水口。該進排水單元包括一安裝於該進排水口的進排水控制閥，及一顯露於該水上部以驅動該進排水控制閥的驅動機構，該驅動機構能驅動該進排水控制閥在一開啟位置與一封閉位置間移動。利用顯露於該水上部以驅動該進排水控制閥的驅動機構，使操作者在水上部即可驅動該進排水控制閥在該開啟位置與該封閉位置間移動，無須水下作業，因此使用上省時、省力又安全。
