Coal low-temperature crushing multi-component gas monitoring system and device

The invention relates to the technical field of coal crushing gas monitoring, and particularly discloses a coal low-temperature crushing multi-component gas monitoring system and device.The coal low-temperature crushing multi-component gas monitoring system comprises a coal sample crushing tank, a crushing cavity is formed in the middle of the coal sample crushing tank, an exhaust cavity and a gas inlet cavity are formed in the upper end and the lower end of the crushing cavity correspondingly, and a motor is fixed to the bottom of the coal sample crushing tank; a sealing plate is fixed to the bottom of the air inlet cavity, an output shaft is coaxially fixed to the motor, movably penetrates through the sealing plate and is sleeved with a telescopic outer shaft, a limiting connecting mechanism is arranged between the output shaft and the telescopic outer shaft, the telescopic outer shaft slidably penetrates through the dust filtering layer and is coaxially fixed with a crushing cutter, and the telescopic oute