Spray Sterilization Machine Product Introduction

The Automatic Spray Sterilization Machine for Food Processing is an industrial thermal processing system developed for the sterilization of packaged food products.During operation, packaged products are loaded into the sterilization chamber, where heated process water is circulated and sprayed through strategically positioned nozzles. The high-pressure spray distributes thermal energy evenly around the packages, helping achieve consistent processing conditions throughout the chamber. The reference equipment is designed for pouches, bottles, jars, cans, and other packaged products.

Automatic temperature regulation and pressure control allow the sterilization cycle to be adapted to different products and packaging materials. Pressure-balanced processing is particularly useful for flexible and semi-rigid packages where excessive internal and external pressure differences could cause package deformation.

The system can also incorporate water recycling and heat recovery, reducing water and energy consumption during repeated production cycles. PLC automatic control simplifies operation and improves repeatability between batches.

Multiple configurations are available, including single-basket, double-basket, and rotary systems, allowing the machine to be selected according to production capacity, package format, and processing requirements.

Key Features

Uniform Water Spray Heating
High-pressure spray nozzles distribute heated process water throughout the chamber, helping minimize temperature differences and achieve consistent thermal treatment.

Automatic Temperature Control
The control system automatically regulates processing temperature according to the selected sterilization program.

Pressure-Balanced Processing
Controlled chamber pressure helps protect flexible and semi-rigid packaging from excessive deformation during heating and cooling.

PLC Automatic Control
PLC control provides automatic management of temperature, pressure, processing stages, and safety functions, reducing dependence on manual operation.

Multiple Sterilization Modes
Depending on configuration and process requirements, the equipment can support water spray, water immersion, and steam-water mixed sterilization.

Water Recycling System
Process water can be circulated and reused during operation, helping reduce overall water consumption.

How Does the Spray Sterilization Machine Work?

1. Product Loading
Sealed packaged products are arranged in sterilization baskets or trays and loaded into the chamber.

2. Chamber Sealing
After loading, the sterilization chamber is securely closed and the automatic processing program begins.

3. Water Heating
Process water is heated to the required temperature according to the selected product recipe.

4. High-Pressure Water Spray
A circulation pump delivers heated water to spray nozzles positioned throughout the chamber.The nozzles distribute hot water around the packaged products, creating more uniform thermal conditions.

5. Temperature Holding
The products are maintained under controlled temperature and pressure conditions for the required processing period.

6. Controlled Cooling
After thermal treatment, cooling water is circulated through the system to progressively reduce product temperature.

7. Product Unloading
Once the programmed cycle has been completed and chamber conditions are safe, the products can be removed for drying, inspection, labeling, cartoning, or storage.

Technical Specifications

Applications

• Ready-to-Eat Meals
  Suitable for sealed ready meals and prepared foods packed in heat-resistant trays, pouches, or other compatible containers.
• Canned Food
  Can be used for thermally processing canned vegetables, fruits, meat products, fish, sauces, and other canned foods.
• Retort Pouches
  Pressure-controlled processing makes the equipment suitable for flexible retort pouches requiring controlled heating and cooling.
• Sauces & Soups
  Suitable for packaged sauces, soups, gravies, curry products, and other prepared foods.
• Meat Products
  Can process packaged sausages and selected meat products requiring thermal sterilization after sealing.
• Fish & Seafood
  Suitable for canned fish and other appropriately packaged seafood products. Canned fish is specifically listed as an application for the reference equipment.
• Fruit Products
  Can be used for canned fruits and other packaged fruit products requiring controlled thermal processing.

Advantages of Spray Sterilization

• More Uniform Temperature Distribution
  Multiple spray nozzles circulate heated water around the products, improving heat distribution throughout the chamber.
• Lower Water Consumption
  Unlike a full-water immersion process, spray processing does not necessarily require the entire chamber to remain filled with process water. Water circulation and recycling further improve efficiency.
• Flexible Packaging Compatibility
  Controlled temperature and counter-pressure make the process suitable for packages that may deform under uncontrolled thermal conditions.
• Efficient Heating and Cooling
  Circulating water provides efficient heat transfer during both heating and cooling stages.
• Repeatable Processing
  PLC-controlled programs allow production parameters to be reproduced for different batches and products.
• Reduced Operating Costs
  Water recycling and heat recovery can reduce utility consumption during industrial production.

Why Choose Us?

Uniform Thermal Processing
Optimized spray distribution helps maintain consistent processing conditions throughout the sterilization chamber.

Flexible Product Applications
One system can be configured for multiple packaged foods, including ready meals, sauces, canned foods, seafood, meat products, and fruit products.

Automatic Process Control
PLC automation reduces manual intervention and provides convenient control over the complete sterilization cycle.

Packaging Protection
Temperature and pressure can be controlled together to reduce the risk of packaging deformation during heating and cooling.

Energy & Water Efficiency
Water circulation and optional heat recovery help reduce resource consumption during repeated production cycles.

Multiple Machine Configurations
Single-basket, double-basket, and rotary configurations can be selected according to production capacity and processing requirements.

Customizable Design
Chamber dimensions, basket configuration, heating system, cooling system, sterilization process, electrical specifications, and automation level can be customized.

FAQ

What is a spray sterilization machine?
A spray sterilization machine is industrial thermal processing equipment that circulates heated water through spray nozzles around sealed packaged foods. The process provides controlled heat distribution for sterilization while allowing temperature and pressure to be managed automatically.

What products can be processed?
The machine is suitable for ready meals, sauces, soups, canned foods, dairy products, sausages, canned fish, canned fruits, pet foods, and other suitable packaged products.

What packaging can be used?
Compatible formats can include metal cans, glass bottles and jars, plastic containers, trays, and flexible retort pouches.

Does the machine use high-pressure water spray?
Yes. High-pressure spray nozzles circulate heated water around the products to promote uniform temperature distribution.

Can temperature and pressure be controlled automatically?
Yes. The reference equipment uses PLC control with automatic temperature regulation and pressure safety interlocks.

Can it process flexible pouches?
Yes. Pressure-balanced processing makes the system particularly suitable for flexible and semi-rigid packaging when the correct process parameters are used.

Does the machine recycle water?
Yes. The reference design incorporates water recycling and heat recovery to reduce water and energy consumption.

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