Release time:2025-10-13 16:38
What are the filling methods for fire extinguisher filling equipment? Fire extinguisher filling equipment has different requirements for filling due to differences in the physical and chemical properties of liquid materials. Liquid materials are filled into containers by liquid storage devices. In principle, the following methods are often used.
1) Atmospheric pressure filling. It refers to the filling method that directly relies on the weight of the liquid to be filled to flow into the packaging container under atmospheric pressure. The process of atmospheric pressure filling is as follows: 1. Liquid intake and exhaust, that is, the liquid material enters the container, and the air in the container is discharged at the same time; 2. Stop the liquid inlet, that is, when the liquid material in the container reaches the quantitative requirements, the liquid inlet automatically stops; 3. Remove the residual liquid, that is, remove the residual liquid in the exhaust pipe.
2) Isobaric filling. It is a filling method that uses the compressed air in the air chamber on the upper part of the liquid storage tank to inflate the packaging container, so that the pressure of the two is close to equal, and then the liquid material flows into the packaging container by its own weight. The process of isobaric filling is: 1. Inflation and isobarge; 2. Intake and return air; 3. Stop liquid intake; 4. Release pressure, that is, release the compressed gas remaining in the bottleneck into the atmosphere to avoid sudden pressure reduction
A large amount of bubbling affects the packaging quality and quantitative accuracy.
3) Vacuum filling method. It is a method of filling under conditions below atmospheric pressure. It has two basic methods: one is the pressure vacuum type, that is, to make the inside of the liquid storage tank at normal pressure, only the air inside the packaging container is pumped to form a certain degree of vacuum, and the liquid relies on the pressure difference between the two containers to flow into the packaging container and complete the filling; the other is the gravity vacuum type, that is, to make the liquid storage tank and the packaging container are in a state of
Close to the same vacuum state, the liquid material flows into the container by its own weight. At present, the pressure vacuum type is often used in China. Its equipment is simple and reliable. The process of vacuum filling is: 1. Vacuum the bottle; 2. Intake and exhaust; 3. Stop the liquid intake; 4. Residual liquid reflux, that is, the residual liquid in the exhaust pipe is returned to the liquid storage tank through the vacuum chamber.
4) Siphon filling. Siphon filling applies the principle of siphon so that the liquid material is sucked into the container through the siphon pipe from the liquid storage tank until the two liquid levels are equal. This method is suitable for filling low-viscosity gas-free liquid materials. The equipment structure is simple, but the filling speed is low.
5) Pressure filling. Pressure filling is to control the reciprocating motion of the piston by means of mechanical or pneumatic hydraulic devices, and reduce the viscosity of the liquid material from the storage cylinder into the piston cylinder, and then forced into the container to be filled. This method is sometimes used for the filling of beverages containing gas. Since it does not contain colloidal substances, the foam formed is easy to disappear, so it can be directly filled into the bottle without pre-inflation by relying on the gas pressure it has, thus greatly improving the filling speed.
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