1results about How to "Realize automatic drive" patented technology

The present application relates to the technical field of vacuum packaging, in particular to a food vacuum packaging and fresh-keeping equipment and a use method thereof. The equipment comprises a support frame, a shell, a sealing assembly, a supporting assembly, a negative pressure machine and an electric push rod two. The support frame is provided with the shell on the top. The support plate of the shell is used for placing a vacuum bag. The shell is internally provided with the sealing assembly and the supporting assembly. The supporting assembly penetrates the sealing assembly. The supporting assembly comprises two drive rods. The drive rods are rotatably connected with two connecting rods at the ends. The connecting rods are rotatably connected with support rods at the ends. The drive rods, the connecting rods and the support rods are internally provided with air channels in communication. The rear end of the drive rod is provided with an air outlet in communication with the air channel. The support rods of the supporting assembly are unfolded to support the food area of the vacuum bag. The two heat seals of the sealing assembly are matched. The air is drawn in steps through the air channels. The two-step air extraction packaging is realized, that is, the air outside the food is extracted first and then the air in the food area is extracted. The food is not directly squeezed throughout the process.