A sample separation apparatus for geological survey

The utility model belongs to the technical field of geological survey, and particularly relates to sample separation equipment for geological survey, which comprises a main body and a control rod, a feeding port is formed in the top of the main body, a top cover is connected to the outer side of the feeding port, a fixing groove is formed in the inner wall of the main body, and a pulley is arranged in the fixing groove. A rotating shaft penetrates through the interior of the pulley, a connecting block is arranged at the end of the rotating shaft, a first filter screen is arranged on the side of the connecting block, the connecting block is connected with the first filter screen in a welded mode, the control rod penetrates through the interior of the first filter screen, a first spring is arranged in the control rod, and a clamping rod is arranged at the end of the first spring; and the end part of the clamping rod is connected with a clamping groove. The sample separation equipment forgeological exploration i