What Is a Quantitative Filling Machine?
A quantitative filling machine is a filling machine that can measure and fill a certain amount of product using a scale. There are liquid filling machines and solid filling machines. However, the mechanism for measuring weight using a scale is largely the same.
There are two types of quantitative filling machine: automatic filling machines and semi-automatic filling machines. Automatic filling machines are those in which filling containers flow through a conveyor line and start filling automatically when they reach a certain position. On the other hand, a semi-automatic filling machine automatically goes from the conveyor line to the filling location, but the filling start operation is done manually.
Uses of Quantitative Filling Machines
Quantitative filling machines are used by many manufacturers. For example, they are used for liquids, such as water or oil. These are filled using head pressure from a pump or tank.
Other semi-solid items, such as sauce and pastes, can also be filled. In such cases, a screw is installed in the tank to prevent blockage.
For items of irregular size, such as vegetables and fruits, several weighing scales are used to weigh several items at once. The bag is then filled by selecting the right weight for each item.
Principle of Quantitative Filling Machines
Liquid quantitative filling machines fill liquids from tanks or hoppers. The liquid is filled from the tank or hopper through piping to the filling nozzle. When the filling process is started, the nozzle valve opens, and the liquid begins to fill. When the amount of liquid is reached, the weigher sends a signal to stop the filling process.
Weighing instruments often use load cells. Load cells can convert the force caused by a load into an electrical signal. Load cells have a strain gauge, an electrical resistance wire strain gauge, attached to a metal body and measure the change in resistance. Compared to conventional spring-loaded load cells, these load cells are extremely accurate.