Gas desorption measuring device in coal crushing process

The invention belongs to the field of porous solid medium crushing desorption determination, and relates to a gas desorption determination device in a coal crushing process, which comprises a shell, a frequency modulation control switch, a vibration unit, a spring, a temperature controller, a sample pool, a sample pool support frame, a fastening unit, a gas pipe channel, a stop valve, a reference tank, a constant temperature water bath, a data acquisition instrument, a computer and the like. A frequency modulation control switch and a temperature controller are arranged outside the shell; the internal support is connected with the sample pool support frame and the vibration unit through springs; the sample pool is fixed through a groove and a fastener on the sample pool supporting frame, an impact block is arranged in the sample pool and eccentrically fixed on the bowl body, the impact block and the bowl body are connected in a hollow manner, a heating pipe is arranged in the sample pool and filled with liqui