Home Uncategorized There are several commonly used filling methods, which are applicable to those materials

There are several commonly used filling methods, which are applicable to those materials

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There are several commonly used filling methods, which are applicable to those materials

filling methods vary according to different materials. At present, there are various filling methods in China
1. The filling of liquid materials usually adopts atmospheric pressure filling, negative pressure filling and pressure filling. Such as DC filling, piston filling, vacuum filling, etc. Direct current filling of mineral water, piston filling of oil, vacuum filling of liquid medicine, etc. Of course, depending on the output, some materials can be used for any kind of filling. Pastes generally use pressure filling or spiral filling
2. Powder materials are usually filled with screw and cup
3. Tablets and capsules are filled with several capsules
the above is just a brief description. There are also irregular materials in practical application. Multiple materials are filled at the same time
in addition to the above measurement methods, there are also weighing measurement, vibration counting and filling.

1) normal pressure filling normal pressure filling is to directly rely on the self weight of the liquid filled material to flow into the packaging container under atmospheric pressure. The machine that fills liquid products into packaging containers under normal pressure is called atmospheric filling machine. The technological process of atmospheric pressure filling is: liquid inlet and exhaust, that is, the liquid material enters the container and the air in the container is discharged at the same time; Stop liquid feeding, that is, when the liquid material in the container meets the quantitative requirements, the liquid feeding will stop automatically; Drain the residual liquid, i.e. drain the residual liquid in the exhaust pipe. This process is necessary for those structures that exhaust to the upper air chamber of the reservoir. The atmospheric pressure method is mainly used for filling low viscosity non gas liquid materials, such as milk, Baijiu, soy sauce, medicine and so on
2. The isobaric method is used to fill the compressed air in the upper chamber of the liquid storage tank by the equal pressure method, filling the packing container with pressure, so that the pressure of the two sides is close to the same, and then is poured into the container by gravity. The filling machine using isobaric method is called isobaric filling machine. The technological process of isobaric filling is: inflation isobaric; Liquid inlet and gas return; Stop liquid feeding; Release the pressure, that is, release the residual compressed gas in the bottleneck to the atmosphere, so as to avoid a large number of bubbles caused by sudden pressure reduction in the bottle, which will affect the packaging quality and quantitative accuracy. Isobaric method is applicable to the filling of aerated beverages, such as beer and soda, so as to reduce the loss of gas (CO) contained therein
3) vacuum filling vacuum filling is filling under the condition of lower than atmospheric pressure. It has two basic ways: one is the differential pressure vacuum type, which makes the interior of the liquid storage tank under normal pressure, and only exhausts the interior of the packaging container to form a certain vacuum. The liquid material flows into the packaging container and completes the filling by relying on the pressure difference between the two containers; The other is gravity vacuum type, which makes the liquid storage tank and packaging container in a nearly equal vacuum state, and the liquid material flows into the container by its own weight. The negative pressure filling machine is called vacuum filling machine. At present, differential pressure vacuum type is commonly used in China. It has simple structure and reliable operation. The technological process of vacuum filling is: empty the bottle; Liquid inlet and exhaust; Stop liquid feeding; The residual liquid returns, that is, the residual liquid in the exhaust pipe returns to the liquid storage tank through the vacuum chamber. Vacuum method is suitable for filling liquid materials with slightly higher viscosity (such as oil, syrup, etc.), liquid materials containing vitamins (such as vegetable juice, fruit juice, etc.) and toxic liquid materials (such as pesticides, etc.). This method can not only improve the filling speed, but also reduce the contact and action between the liquid material and the residual air in the container, so it is conducive to prolong the storage life of some products. In addition, it can limit the escape of toxic gases and liquids, so as to improve the operating conditions. However, it is not suitable for filling wines containing aromatic gases, because it will increase the loss of wine aroma
4) pressure filling pressure filling is to control the reciprocating motion of the piston with the help of mechanical or pneumatic hydraulic devices, suck the liquid material with high viscosity from the storage cylinder into the piston cylinder, and then force it into the container to be filled. This method is sometimes used for filling soft drinks such as soft drinks. Because it does not contain colloidal substances, foam formation is easy to disappear, so it can directly pour into unprefilled bottles by relying on its own strength, thus greatly increasing the filling speed. Br> 5) siphon filling siphon filling is to apply the siphon principle to make the liquid material be sucked into the container from the liquid storage tank through the siphon pipe until the two liquid levels are equal. This method is suitable for filling liquid materials with low viscosity and no gas. It has simple structure but low filling speed.

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