What Is Injection Filling Machine?

Injection filling machine is a type of equipment used to package liquid products. These machines are widely used in industries such as food and beverage, pharmaceuticals, chemicals, and cosmetics. For example, in the pharmaceutical industry, injection filling machines can be used to package eye drops, oral liquids, oral syrups, and disinfectants. Therefore, in terms of hygiene and quality, there are many types of liquid filling machines on the market to meet the needs of different production scales, mainly fully automatic injection filling machine, semi-automatic injection filling machine, manual injection filling machine.

But they are all based on the same basic principle. The machine pumps the liquid product from the reservoir into the container. The amount of liquid dispensed is controlled by a variety of factors, such as the size of the container, the viscosity of the liquid, and the required filling amount.

Injection Filling Machine Different Types

Manual injection filling machine

The manual injection filling machine is a versatile equipment suitable for the pharmaceutical, cosmetics, and food industries. Compared with other filling equipment, it does not require automation to run. Therefore, it is very suitable for small businesses or laboratories. Here is how a manual liquid filling machine works:

Step 1: Pour the liquid to be filled

Once the filling capacity of the machine is set, pour the liquid into the feed hopper.

Step 2: Pour the liquid into the bottle

Put the bottle under the liquid outlet with one hand, and slowly press the handle with the other hand, and the liquid will flow out of the liquid outlet.

Semi-automatic injection filling machine

Semi-automatic injection filling machine is a combination of manual and automatic operation. It is usually equipped with an automatic filling device, but it also requires manual loading of containers and operation of the filling procedure. Here is a breakdown of the principle of the liquid filling machine:

Step 1: Connect the air source

Connect the air inlet pipe to the air source, turn on the air switch, and pull out the air switch to turn it off. In addition, pull out the top of the filter and rotate it to adjust the air pressure.

Step 2: Adjust the filling speed

Rotate the speed regulating valve and the filling interval regulating valve to set the appropriate pumping speed. To avoid the liquid rushing out of the bottle during the filling process, you can slow down a little.

Step 3: Determine the filling amount

Adjust the position of the magnetic switch through the hand wheel on the right side of the machine to determine the required filling amount, then lock the active electromagnetic switch on the cylinder, and the filling process officially begins.

Automatic injection filling machine

The automatic injection filling machine has accuracy, efficiency and consistency. It adopts the volumetric filling principle, that is, filling each container with a predetermined amount of liquid. Therefore, it can perfectly adapt to large-scale production in beverage, pharmaceutical, chemical and other industries. The following is a clear description of the working principle of the injection filling machine:

Step 1: Set parameters

First, you must set all the parameters of the injection filling machine, such as the speed, temperature and pressure of the machine according to the properties and viscosity of the liquid.

Step 2: Load the bottles into the feed hopper

Put the bottles into the feed hopper, and as the rollers turn, the bottles are transported one by one to the conveyor belt, which in turn transports the bottles to other units for processing.

Step 3: Convey the bottles

The conveyor belt is an indispensable part of the entire operation process of the injection filling machine. It can adjust the spacing of the bottle stoppers according to different bottle diameters to ensure the smooth progress of the entire conveying process.

Step 4: Complete the filling process

The bottles are sent along a conveyor belt to the filling unit. The injection filling machine is specially designed to precisely inject the required amount of liquid into the bottle. This is achieved with the help of a plunger or a rotary valve.