With the development of technology in society, to meet the needs of the public, all kinds of enterprises began to use Filling Machines to help them improve production efficiency. Filling Machines are widely used in liquid filling water, oil, sauce, daily chemical, pesticides, and so on. As a professional Filling Machine manufacturer, we will explain in detail the four common filling methods of Filling Machines.

(1) atmospheric pressure filling method.

The atmospheric pressure filling method is under atmospheric pressure, relying on the self-weight of the liquid in the packaging container. The entire filling system is in the open state of work, with liquid level control filling atmospheric pressure filling method. Its working process is: into the liquid exhaust, liquid filling into the container, while the air in the container is from the tube. Stop adding liquid. The liquid in the container reaches the quantitative requirements and automatically stops filling. Discharge the residual liquid, the residual liquid, into the exhaust pipe to remove it for the next refilling into the liquid exhaust preparation. The atmospheric pressure method is mainly used for filling liquid products with small viscosity, no carbon dioxide, and no odor, such as soy sauce, milk, white wine, vinegar, juice, etc.

(2) Isobaric filling method.

The isobaric filling method uses the upper cavity of the storage tank compressed air to be filled first to inflate the container so that the pressure in the storage tank and the container is close to equal. The liquid in this closed system, relying on self-weight flow into the container, is suitable for filling gas-containing liquids. Its working process: inflating equal pressure; into the liquid back into the gas, stopping feeding liquid; release pressure (release residual gas pressure in the bottle to avoid the sudden reduction of pressure in the bottle and the production of bubbles, affecting the quantitative accuracy.

(3) Vacuum filling method.

The vacuum filling method uses the pressure difference between the liquid to be filled and the exhaust port of the gas in the inlet container for filling. The pressure difference can make the product flow higher than the equal pressure filling method. It is particularly advantageous for filling small-mouth containers, viscous products, or liquids in large-capacity containers. However, vacuum filling systems require overflow collection devices and product recirculation devices. Different forms of vacuum generation have given rise to various differential pressure-filling methods.

The process flow of the vacuum filling method is as follows:

Vacuuming the container.

Venting of the inlet liquid.

Stopping the inlet liquid.

Return of the residual liquid (residual liquid in the vent pipe flows back to the reservoir through the vacuum chamber).

The vacuum method can improve the speed of filling cans, reduce the contact between the product and air, which is conducive to extending the shelf life of the product, and its fully enclosed state also limits the spillage of the active ingredients in the product.

The vacuum method is suitable for those micro-viscous liquids (such as oil, syrup, etc.) canning, should not be exposed to air vitamin liquid (such as vegetable juice, fruit juice) and toxic liquids (such as pesticides, chemical potions), etc.

(4) pressure filling method.

The pressure-filling method is the opposite of the vacuum-filling method. The canning and sealing system is in a state of higher than atmospheric pressure, applying positive pressure to the product. Fluid or semi-fluid liquid filling can be completed by pressurizing the space reserved at the top of the tank or using a pump to press the product into the filling container. The method maintains a pressure above atmospheric pressure at both the product and vent ends. It maintains a higher pressure at the product end, which helps keep carbon dioxide levels low in some beverages. Pressure valves are used to fill products that cannot be vacuumed. For example, alcoholic beverages (alcoholic content decreases with increasing vacuum), hot beverages (juice at 90 degrees, where vacuuming would cause the beverage to evaporate rapidly), and slightly more dense liquid materials (jams, hot sauces, etc.).

The above is about the Filling Machine's common four filling methods for different industries on the Filling Machine filling methods are different. If you need more detailed information, welcome to contact us!