The working principle of the gear pump filling machine is as follows:
Liquid Extraction:
The core components of the gear pump filling machine are a pair of intermeshing gears. One of the gears is driven to rotate by a driving device such as an electric motor, and the other gear rotates in mesh with it.
When the gears start to rotate, on the side where the tooth grooves of the gears are connected to the liquid storage tank, due to the rotation of the gears, the space of the tooth grooves gradually increases, forming a local low-pressure area. Under the action of the external atmospheric pressure, the liquid in the liquid storage tank is forced into the tooth grooves of the gears, and the liquid is thus extracted into the gear pump and enters the state of waiting for filling.
Liquid Conveyance and Filling:
As the gears continue to rotate, the tooth grooves filled with liquid will gradually rotate to the position where they are connected to the outlet pipe. At this time, the connection between the tooth grooves and the inlet is cut off, and the liquid is sealed within the tooth grooves.
When the tooth grooves are connected to the outlet, the meshing of the gears causes the volume of the tooth grooves to gradually decrease, exerting a squeezing effect on the liquid in the tooth grooves, squeezing the liquid out from the outlet and into the target container, thus completing the filling process.
The whole process is repeated continuously. The gear pump continuously extracts the liquid from the liquid storage tank and fills it into the target container until the set filling volume is completed or other preset working conditions are reached. Due to the small meshing clearance of the gears and good sealing performance, accurate liquid filling can be ensured.
