Exploration sampling machine used before coal mining

The utility model is suitable for the technical field of coal mine geological exploration, and provides an exploration sampling machine used before coal mining, which comprises a sampling pipe and an air pump, baffles are arranged in the sampling pipes from top to bottom; the sampling pipe is divided into a plurality of sampling cavities by the baffles; a water inlet pipe penetrates through the peripheral side surface, close to the inner bottom surface, of the sampling cavity; a first one-way valve is arranged in the water inlet pipe; a piston is slidably arranged in the sampling cavity; a connecting spring is arranged between the piston and the top in the sampling cavity; an air pipe penetrates through the peripheral side surface of the sampling cavity; the output ends of the air pumps are provided with air delivery pipes; and each air pipe fitting is fixedly connected with the corresponding air conveying pipe. According to the device, a first stop valve is opened, air in a corresponding sampling cavity is e