Thermal insulation canister

A thermal insulation canister, comprising:

• a canister body;
• and
• a thermal insulation cover,
• wherein the thermal insulation cover comprises an upper cover body, a sealing ring, an adjusting frame, a pressure valve, a trigger and an inner cover body, the trigger is arranged on the upper cover body, each of two sides of the trigger is equipped with a trigger connecting shaft, the upper cover body is equipped with two installation holes, and one end of the trigger connecting shaft is positioned within the installation holes and is slidably connected to the installation holes;
• two adjusting shafts are fixedly installed on an upper end surface of the adjusting frame, each of upper ends of the two adjusting shafts passes through the installation holes and is rotatably connected with the trigger connecting shaft, the adjusting shaft is connected with a junction of a raised portion and a connecting portion of the trigger connecting shaft, the trigger connecting shaft is configured to drive the adjusting shaft to move in a vertical direction, the sealing ring is positioned between the upper cover body and the adjusting frame, an upper end of the sealing ring is inserted and fixed with a lower end surface of the upper cover body, a lower end of the sealing ring is contacted with the upper end surface of the adjusting frame, a thermal insulation layer is arranged inside the adjusting frame, the pressure valve is installed on the adjusting frame, and the pressure valve is configured to release pressure in the canister body;
• the canister body is further equipped with an inner canister body, the inner cover body is fixed on an upper end of the inner canister body, the inner canister body is clamped and fitted with an inner wall of the canister body, the trigger is of a cam structure, and the trigger pulls the adjusting frame by the cam structure to make the sealing ring stretch and slide, thereby locking the canister body,
• wherein the upper cover body comprises an upper cover plate and an upper protection plate, the upper protection plate is fixed on a lower end surface of the upper cover plate, the lower end surface of the upper cover plate is equipped with an upper installation slot, an outer edge of the upper protection plate protrudes upward and is clamped into the upper installation slot, a lower end surface of the upper protection plate is equipped with an outer ring groove and an inner ring groove, an upper end of the canister body is inserted and fitted with the outer ring groove, and an upper end of the sealing ring is inserted and fitted with the inner ring groove,
• wherein the adjusting frame comprises an adjusting plate and a bottom plate, the thermal insulation layer is arranged between the adjusting plate and the bottom plate, the bottom plate is clamped and fixed on a lower end surface of the adjusting plate, a center of the lower end surface of the adjusting plate is equipped with a central shaft, the lower end surface of the adjusting plate is further equipped with a plurality of spoke edges and annular edges, the plurality of spoke edges are arranged surrounding the central shaft, one end of the spoke edge is connected to the central shaft, the other end of the spoke edge extends to an outer edge of the adjusting plate, a diameter of the annular edge is greater than a diameter of the central shaft, the annular edge connects all of the spoke edges, the spoke edge and the annular edge are configured to increase firmness of the adjusting frame, an outer edge part of an upper end surface of the adjusting plate is equipped with a downward recessed abutting groove, a lower end of the sealing ring is equipped with an abutting ring, and the abutting ring abuts against an upper end surface of the abutting groove.