The working principle of the fully automatic rotary pump filling machine mainly achieves accurate fillingofmaterials through the following series of coordinated actions:
Power Drive System:
Motor Providing Power: The fully automatic rotary pump filling machine is usually powered by a motor. After the motor is started, it transmits power to the rotor of the rotary pump through a coupling or other transmission devices.
Controlling the Motor Speed: To meet different filling requirements, the speed of the motor can be adjusted by the control system. For example, for scenarios requiring rapid filling, the motor speed can be increased; for materials with high requirements for filling accuracy, the motor speed may need to be reduced to ensure accurate filling.
Working Principle of the Rotary Pump:
Rotors Rotating to Generate Suction: The rotors of the rotary pump start to rotate under the drive of the motor, and the central axis of the rotor forms a certain angle with the axis of the pump. When the rotors rotate, the volume of the sealed chambers formed between the rotors and the stators will constantly change. At certain positions of the rotors, the volume of the chambers increases, creating negative pressure and generating suction. Thus, under the combined action of the external pressure (such as the pressure in the storage tank) and the suction generated by the rotary pump, the materials will be sucked from the storage tank into the chambers of the rotary pump.
Rotors Pushing Materials for Discharge: As the rotors continue to rotate, the volume of the chambers gradually decreases, and the materials inside are compressed. When the volume of the chambers is reduced to a certain extent, the materials are pushed towards the outlet of the pump, thus realizing the transportation of materials. Due to the high matching precision between the rotors and the stators of the rotary pump, it can effectively ensure the continuous transportation of materials and has good sealing performance to avoid material leakage.
Measurement and Control Section:
Accurate Measurement by Measuring Devices: To ensure the accuracy of the filling volume, the filling machine is equipped with measuring devices. Common measurement methods include flow meter measurement, weighing sensor measurement, etc. The flow meter can monitor the flow rate of materials in real time. When the preset flow value is reached, the control system will send a signal to control the rotary pump to stop or slow down, thus realizing precise control of the filling volume; the weighing sensor determines the filling volume by measuring the weight change of the container before and after filling, and this method is more suitable for high-precision filling requirements.
Coordinated Operation of the Control System: The control system is the core part of the fully automatic rotary pump filling machine. It receives signals from components such as measuring devices and sensors, and controls executive components such as motors and valves according to preset programs and parameters. For example, when the sensor detects that the container is in place, the control system will start the rotary pump to begin filling; when the filling volume reaches the set value, the control system will control the rotary pump to stop filling and send a signal to let subsequent equipment (such as capping machines, labeling machines, etc.) perform corresponding operations, thus realizing the automated control of the entire filling process.
Filling Execution Section:
Accurate Pouring by Filling Heads: The materials transported by the rotary pump are connected to the filling heads through pipes. The filling heads are usually designed to match the openings of the containers so that the materials can be accurately poured into the containers. During the filling process, the filling heads need to remain stable, avoiding shaking or displacement to ensure the accuracy and consistency of filling.
Anti-drip Design: To prevent materials from dripping from the filling heads after filling is completed, the filling machine usually adopts some anti-drip designs. For example, a suction-back device is set at the filling head. After filling is completed, the suction-back device will generate a certain suction to suck back the materials remaining in the filling head, avoiding the materials from dripping onto the outside of the container or on the production
