LOCKING MECHANISM FOR A TANK BODY AND A TANK COVER OF A PRESSURE TANK

The present utility model discloses a locking mechanism for a tank body and a tank cover of a pressure tank, comprising: a tank body, a tank chamber, a tank cover, a hydraulic cylinder, a locking ring, a spring cylinder, a fixing supporting mechanism, a fixing plate, a barb, a notch, and a pulling cylinder, wherein the tank chamber is in the tank body, the tank body is provided thereon with the tank cover and is provided on its left side with the hydraulic cylinder, the hydraulic cylinder is provided on its lower side with the locking ring, the locking ring is provided on its lower side with the spring cylinder, the spring cylinder is provided on its right side with the fixing supporting mechanism, the tank body is provided thereon with the fixing plate, the fixing plate is provided on its lower side with the barb, the locking ring is provided on its lower side with the notch, the spring cylinder is provided at its vicinity with the pulling cylinder. The structure is easy to be assembled and mounted and can be locked by a high external force, that is, the tank cover can be disassembled conveniently and it can be locked tightly by a sufficient external force, without any gas leakage, even if the tank cover is deformed and the package cover is slightly deformed. Figure 1 10 i Figure 2