Unloading device for chemical solution thermal insulation transport tank car

An unloading device for a chemical solution thermal insulation transport tank car belongs to the technical field of tank car unloading machinery. The technical problem needed to be solved is to provide an unloading device for the chemical solution thermal insulation transport tank car with a simple structure, safe and reliable use as well good effect of thermal insulation. The method adopts the following technical schemes: three-way ball valve is arranged in a transport tank; a first discharging tube and a second discharging tube are connected to the three-way ball valve respectively; a ball valve operating device is arranged on a valve rod of the three-way ball valve; the first discharging tube, the second discharging tube and the ball valve operating device are all arranged at an external portion of the transport tank; and seal devices are arranged among the first discharging tube, the second discharging tube, the ball valve operating device and the transport tank. The unloading device in the invention is m