Constant potential rectifier collector

The utility model discloses a potentiostat collector, which comprises a potentiostat collector body, the left side surface and the right side surface of the potentiostat collector body are fixedly connected with positioning concave blocks, the upper surface of each positioning concave block is fixedly embedded with a threaded cylinder, and the inner wall of each threaded cylinder is in threaded connection with a threaded screw rod. The device is provided with a threaded screw rod, a threaded cylinder, a rolling bearing, a movable push block, a positioning insertion block, a positioning opening and a positioning insertion plate, the threaded screw rod is matched with the threaded cylinder, so that the threaded screw rod conveniently pushes a bearing seat to move in the process that the threaded screw rod rotates in the threaded cylinder, and the bearing seat can move according to the connection relation between the bearing seat and the movable push block. The positioning insertion block can be conveniently ins