VOCs trapping device

The utility model relates to the technical field of environment detection equipment, and discloses a VOCs trapping device which comprises an outer box, and a transmission assembly is arranged on the inner side of the outer box. According to the device, the refrigeration effect is achieved through the refrigeration pump, cold air is conveyed to the inner side of the outer box through the condensation pipe, cold air conveying is conducted under the action of the installation cylinder and the connecting pipe, cold air is conveyed to the inner side of the installation box through the through hole and the air inlet, and therefore the VOCs pretreatment device and the trapping pipe are refrigerated; therefore, refrigeration is facilitated through cold air entering from the periphery at the same time, then the temperature rapidly reaches the trapping temperature for trapping, trapping accuracy and trapping efficiency are improved, under the action of the vacuum cavity and the heat preservation cotton, energy loss on