Sealing device for quickly loading and unloading hazardous chemical substance tank truck

The invention provides a sealing device for quickly loading and unloading a hazardous chemical substance tank truck. The sealing device for quickly loading and unloading the hazardous chemical substance tank truck comprises a protection mechanism and a sealing mechanism and is characterized in that the protection mechanism is installed at the left end of the sealing mechanism and extends into thesealing mechanism, the protection mechanism comprises a protection shell, a dustproof net, an inner tank body, inner annular fixing plates, outer annular fixing plates and inclined reinforcing plates,and the sealing mechanism comprises a fixed sealing plate, an annular sealing pad, an L-shaped liquid discharge pipe, a sealing pad, an L-shaped liquid adding pipe and an end cover. Compared with theprior art, the sealing device has the following advantages that a dual-layer structure is formed, and the protection effect is enhanced; meanwhile, inclined channels can be formed, airflow can spirally flow, the cooling effici