Stirring shaft of hard ice cream machine

Abstract

The invention discloses a stirring shaft of a hard ice cream machine. The stirring shaft comprises a central spindle, stirring blades and a bracket connecting the central spindle and the stirring blades. An outer edge of each stirring blade is provided with at least a positioning groove for installing wiper blades; a wiper blade comprises a cutting edge and is capable of sliding in a preset length along a radial direction of the stirring shaft. Because the wiper blades have a cutting edge structure, when the stirring shaft operates, cutting action on a freezing material layer on an inner wall of a congelation tank is enhanced, thereby improving the heat transfer speed inside and outside the congelation tank, and reducing load of a motor.

Description

technical field [0001] The invention relates to a stirring shaft of a hard ice cream machine. Background technique [0002] The refrigeration device of the hard ice cream machine covers the outer surface of the freezing cylinder. On the inner wall of the freezing cylinder, a layer of frozen material will be formed due to the low temperature. Since the freezing cylinder and the stirring shaft are of fixed size, there will be a gap between the inner wall of the freezing cylinder and the stirring shaft. There is a certain gap, so that the ice cream slurry condenses on the inner wall of the freezing cylinder, resulting in a decrease in the heat transfer rate inside and outside the freezing cylinder. During the operation of the stirring shaft, the frozen material layer attached to the inner wall of the freezing cylinder cannot be better cleaned. Blocks of frozen slurry are easily mixed into the slurry, which affects the taste of ice cream. At the same time, the resistance generat...

AI Technical Summary

Problems solved by technology

[0002] The refrigeration device of the hard ice cream machine covers the outer surface of the freezing cylinder. On the inner wall of the freezing cylinder, a layer of frozen material will be formed due to the low temperature. Since the freezing cylinder and the stirring shaft are of fixed size, there will be a gap between the inner wall of the freezing cylinder and the stirring shaft. There is a certain gap, so that the ice cream slurry condenses on the inner wall of the freezing cylinder, resulting in a decrease in the heat transfer rate inside and outside the freezing cylinder. During the operation of the stirring shaft, the frozen material layer attached to the inner wall of the freezing cylinder cannot be better cleaned. Blocks of frozen slurry are easily mixed into the slurry, which affects the taste of ice cream. At the same time, the resistance generated when the stirring blade scrapes the frozen material layer is transmitted to the motor through the pulley and belt, which increases the load on the motor and increases the heat of the motor. , affecting the service life of the motor

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