Floating nut connecting structure for lifting transmission of material barrel of food mixing machine

The utility model discloses a floating nut connecting structure for lifting transmission of a material barrel of a food mixing machine, which comprises screw rods and guide rails symmetrically arranged on two sides of the screw rods, the guide rails are parallel to the two screw rods, each guide rail is provided with a sliding sleeve capable of lifting and sliding along the guide rail, and the material barrel is connected through the side surfaces on the same side of the two sliding sleeves. According to the device, the lead screw rotates to drive the connecting block connected with the nut to move up and down, and the two ends of the connecting block are embedded into the open grooves of the sliding sleeves on the two sides correspondingly, so that the sliding sleeves on the two sides are driven to do lifting motion along the guide rails, and the material barrels connected to the side walls of the sliding sleeves are driven to ascend and descend; in the transmission process of the device, the two ends of the