What are the maintenance measures for ice cream makers sealing system

The sealing ring is an indispensable core component in the sealing system, and its main material is usually food-grade silicone or nitrile rubber. These materials are widely used in various food processing equipment due to their superior elasticity, heat resistance and corrosion resistance. However, after long-term contact with raw materials such as dairy products, sugars and oils, the sealing ring is prone to absorb trace residues, resulting in the deterioration of physical properties. Therefore, in order to ensure the sealing effect, the operator must remove all sealing rings for thorough cleaning and drying during each equipment cleaning process.

When cleaning, a neutral food-grade detergent should be used, and a soft brush should be used to effectively remove the attachments. Do not use strong alkaline or strong acidic chemicals to avoid corrosion to the material. After cleaning, it is recommended to apply an appropriate amount of food-grade silicone grease on the surface of the sealing ring to enhance its flexibility and lubricity, reduce friction damage during installation, and improve the tightness of the assembly.

During the installation and removal of the sealing system, it is necessary to avoid forcibly prying or excessively pulling the seal to prevent the impact of physical deformation on the sealing performance. When reassembling, ensure that there is no foreign matter left in the sealing groove, and the sealing ring must be fully embedded to avoid distortion or dislocation. For commercial ice cream machines with high frequency of use, it is recommended to conduct a comprehensive inspection and necessary replacement of the sealing system every two to three months. The sealing components of some equipment adopt a combined structure, such as double-layer shaft seals, superposition of O-rings and gaskets, etc., which must be maintained and replaced in strict accordance with the manufacturer's technical specifications to prevent the failure of a single component from affecting the overall sealing.

The maintenance of the sealing system should also include lubrication management of the stirring shaft and its connection parts. The stirring shaft usually passes through the wall of the freezing cylinder and is connected to the motor. Its shaft seal part is subjected to high-intensity rotational force and the impact of alternating hot and cold. If there is a lack of proper lubrication or abnormal sealing, it is very easy to cause jamming, leakage or sleeve wear. Therefore, during maintenance, the wear of the shaft seal components should be checked regularly, and food-grade lubricating oil or grease should be injected into the shaft seal chamber in an appropriate amount to prevent dry wear damage. At the same time, it is also necessary to check whether the bearing is displaced or poorly lubricated to ensure the synchronous and stable operation of the sealing system during power transmission.

In a production environment with drastic temperature differences, the sealing system must also have a certain ability to adapt to thermal expansion and contraction. When the equipment frequently switches between rapid freezing and normal temperature operation, if the material performance of the seal is insufficient or aging occurs, it will not be able to restore the original deformation in time, resulting in micro-leakage or cold air overflow, which in turn affects refrigeration efficiency and energy consumption. Therefore, when purchasing and replacing seals, food-grade materials with high and low temperature resistance, wear resistance and anti-deformation performance certification should be given priority, and original supporting products should be purchased as much as possible to ensure installation matching and performance stability.