Four Filling Methods of Filling Machine

Many people who are laymen on the filling machine will be surprised when they see the filling machine for the first time. Such fully automated equipment and high-efficiency operation process are all admirable.

But how much do you know about the filling machine technology methods currently on the market? I will introduce for you below.

1. Atmospheric Filling

The atmospheric pressure filling method refers to the atmospheric pressure, which relies on the weight of the liquid to flow into the packaging container, and the entire filling system is working in an open state. The atmospheric pressure filling method uses the liquid level to control the filling. The workflow is:

A. In and out, the liquid is poured into the container, and the air in the container is discharged from the exhaust pipe.

B. After the liquid material in the container reaches the quantitative requirement, stop the liquid supply and automatically stop irrigation.

C. Exhaust residual liquid, remove the residual liquid material entering the exhaust pipe, and prepare for the next charging and discharging.

Atmospheric filling method is mainly used for filling liquid products with low viscosity, no carbon dioxide and no peculiar smell, such as soy sauce, milk, white wine, vinegar, fruit juice, etc.

2. Isobaric Filling

The equal pressure filling method uses compressed air in the upper air chamber of the liquid storage tank to inflate and fill the container first, so that the pressure in the liquid storage tank and the container are nearly equal. In this closed system, the liquid substance flows into the container by its own weight. , Suitable for aeration liquid. Its working process: Inflation is equal pressure, Inlet and Return, Stop the liquid, Releasing pressure (Release the remaining gas pressure in the bottle to avoid a sudden drop in the pressure in the bottle, resulting in bubbles, and affecting the quantitative accuracy

3. Vacuum filling

The vacuum filling method uses the pressure difference between the filled liquid and the exhaust port to suck out the gas in the container for filling. The pressure difference can make the flow of the product greater than equal pressure filling. It is especially suitable for liquid filling of small-mouth containers, viscous products or large-capacity containers. However, the vacuum filling system requires an overflow collection device and a product recirculation device. Due to different forms of vacuum generation, various differential pressure filling methods are derived.

A. Vacuum filling method with low gravity

The container needs to be kept at a certain degree of vacuum, and the container needs to be sealed. The low vacuum is to eliminate overflow and backflow during vacuum filling and prevent the gap and gap from being filled by mistake. If the container does not reach the required vacuum, no liquid will flow out of the filling valve port. When a gap or crack in the container is encountered, the filling will automatically stop. The liquid product in the liquid storage tank flows into the bottle through a thin sleeve valve, and the pipe in the center of the sleeve valve can be used for exhaust. When the container is automatically sent under the valve to rise, the spring in the valve opens under pressure, and the pressure in the bottle is equal to the low vacuum on the upper part of the storage tank through the exhaust pipe, and gravity filling starts. When the liquid level rises to the exhaust port, filling stops automatically. This method rarely has turbulence and does not require aeration, and is particularly suitable for filling wine or alcohol. The alcohol concentration remains the same, and the wine will not overflow or flow back.

B. Pure vacuum filling method

When the pressure of the filling system is lower than the atmospheric pressure, the sealing block of the filling valve faces the container and opens the valve at the same time. Since the container connected to the vacuum chamber is in a vacuum, the liquid is quickly sucked into the container until the predetermined liquid is filled. some. Usually, a considerable amount of liquid is pumped into the vacuum chamber, and then recycled after entering the overflow.

The process flow of vacuum filling method is: 1. Vacuum container, 2. Intake and exhaust, 3. Stop inflow, 4. The remaining liquid flows back (the remaining liquid in the exhaust pipe flows back to the storage tank through the vacuum chamber).

The vacuum filling method can increase the filling speed, reduce the contact between the product and the air, and help extend the shelf life of the product. Its fully enclosed state also limits the escape of active ingredients in the product.

The vacuum method is suitable for filling liquids with higher viscosity (such as oil, syrup, etc.), liquid materials that are not suitable for contact with vitamins in the air (such as vegetable juice, fruit juice), and toxic liquids (such as pesticides, chemical liquids), etc.

4. Pressure Filling

The pressure filling method is opposite to the vacuum filling method. The can sealing system is above atmospheric pressure, and positive pressure acts on the product. Liquid or semi-fluid liquid can be filled by pressurizing the reserved space at the top of the storage box or using a pump to push the product into the filling container. The pressure method can keep the pressure at both ends of the product and the exhaust pipe higher than atmospheric pressure, and the pressure at the end of the product is higher, which helps to keep the carbon dioxide content of some beverages low. This pressure valve is suitable for filling products that cannot be vacuumed. Such as alcoholic beverages (alcohol content decreases as the degree of vacuum increases), hot beverages (90 degree juice, vacuuming will quickly evaporate the beverage), liquid materials with slightly higher viscosity (jam, hot sauce, etc.).

Xinmeiyuan's water filling machine, carbonated drink filling machine, juice filling machine, etc. all use different filling methods, only to provide customers with high-quality and satisfactory products.