The utility model discloses a
tank container with good
thermal insulation performance, which comprises a
tank container body, a tank core is fixedly arranged in the
tank container body, a cavity is arranged between the tank core and the tank container body, the surface of the tank container body is fixedly connected with a
surface plastic spraying layer, and the
surface plastic spraying layer is fixedly connected with the tank container body. A cavity is formed in the side wall of the tank container body, a
surface plastic spraying layer is arranged in the cavity, a first mounting opening is formed in the surface of the surface plastic spraying layer, a first conveying
pipe is fixedly connected into the first mounting opening, one end of the first conveying
pipe penetrates through the side wall of the tank container body and communicates with the cavity, and a vacuum
machine is fixedly connected to the other end of the first conveying
pipe. According to the heat preservation device, the cavity is filled with the
inert gas, so that a
vacuum state is formed in the cavity, the
vacuum state can avoid heat
convection and reduce heat loss, meanwhile, certain
inert gas is added into the cavity through the
inert gas filling box, the heat preservation effect is further improved, heat loss of materials is reduced, the smooth degree of discharging is prevented from being affected, and meanwhile the requirements of customers are met.