Volumetric cup filler works on constant volume principle & is suited for the free flowing products with constant bulk density.
The working concept is quite simple. If you imagine dipping your measuring cup into product & then leveling it with straight edge knife. This is the basic principle behind cup filler except that the product flows from a hopper above and the knife is the edge of the hopper.
It is suitable for the free flowing products like salt, detergents, sugar, rice & also for other products, which are free flowing & bulk density is constant.
The principle of auger filler is to dose the product by auger screw. Auger screw speed & rotation is controlled precisely by servo motor.
Auger filler is used mainly for sticky powders like milk powders, flours, ground spices, coffee powders, pesticides, etc.
Auger filler system includes a hopper containing product to be packed. The product level is maintained using inclined or horizontal screw conveyor. There is an agitator, which churns the material & helps to break lumps. The pitch of auger screw is filled with the material, when it rotates & the same is discharged to the bottom of the bag to be formed.