Novel adjustable thermal desorption instrument

The utility model discloses a novel adjustable thermal desorption instrument. The utility model relates to the field of thermal desorption instrument devices. The problems that in the prior art, a machine body of a thermal desorption instrument is of an integrated structural design, dust is prone to entering a ventilation opening, the interior of the thermal desorption instrument cannot be effectively and rapidly cleaned, meanwhile, the thermal desorption instrument cannot be rapidly maintained after breaking down, the working efficiency is obviously reduced, and the labor intensity is high are solved. The cleaning mechanism is located on one side of the machine body. The cleaning mechanism comprises a baffle plate; a handle is arranged on one side of the baffle; a ventilation opening is formed in the middle of the baffle, clamping columns A are arranged at the top end and the bottom end of the front surface of the baffle, shifting pieces A are arranged at the bottom ends of the clamping columns A, springs A