What is the working principle of the plate sterilizer？

Working principle of plate sterilizer A three-stage plate pasteurizer is a food processing equipment used to heat and cool liquids (such as milk, juice, beverages, etc.) to kill harmful bacteria and extend the shelf life of the product.

The three sections of a plate pasteurizer generally include a preheating section, a heating section, and a cooling section. In the preheating section, the liquid is slowly heated to a set temperature (where the initial material exchanges heat with the sterilized material) to eliminate any initial cold spots and prepare for the pasteurization process.

Next, the liquid enters the heating section, where it is quickly heated to a specific temperature, usually around 65-95 degrees celsius, and maintained at that temperature for a predetermined time, usually 15-30 seconds. This high temperature kills bacteria, yeast, and mold that May be present in the liquid, ensuring it is safe for consumption.

After the heating section, the liquid enters the cooling section, where it is quickly cooled to a lower temperature to prevent further bacterial growth. The specific cooling temperature and time depend on the type of liquid being processed.

The plate pasteurizer consists of a series of plates stacked together with alternating liquid channels and hot and cold water channels. This design enables efficient heat exchange between liquid and water, allowing for rapid heating and cooling.

The three-stage plate pasteurizer is typically used in small and medium-sized food processing companies, such as dairy farms, juice producers or soup producers. It provides a cost-effective and energy-efficient method for pasteurizing liquids, ensuring product safety while maintaining the desired taste and quality. Applications:

Fully automatic plate pasteurizer have demonstrated their value in a variety of industries. Here are some specific application cases:

In the dairy industry, these devices are used to process milk and other dairy products. They heat briefly (for 15-20 seconds) at temperatures between 65°c and 95°c to effectively kill bacteria while retaining nutrients and flavor. They are suitable for the production of pasteurized milk, yogurt, cheese, etc.

The technology is widely used in the beverage manufacturing industry for the sterilization of non-alcoholic beverages such as carbonated beverages, tea beverages and juices.

Juice processing in particular benefits from its short treatment time at 85°c to 90°c, which can maintain the color, aroma and nutritional content of the juice, ensure safety and extend shelf life. For beverages containing fruit particles, the fully automatic plate pasteurizer can adjust parameters to effectively sterilize while protecting the integrity of the fruit pulp. Its automatic cleaning function (cip) ensures that the production line maintains high hygiene standards.

Weishu Intelligent Machinery redefines the pasteurization standard with three-stage precision temperature control technology - from preheating, sterilization to instant cooling, we lock in the freshness of every drop of dairy products, juices and beverages with a temperature accuracy of ±0.1℃ and a heat recovery rate of 90%, and reduce your production costs by 30%!