The internal structure of the Aokai filling machine mainly consists of three parts: the material storage system, the filling main unit, and the conveyor system. Its core design centers on high-precision metered filling and automated process control.
1. Material Storage Tank System
Located at the upper part of the equipment, this system uses an atmospheric tank design. It is equipped with a level sensor and a feed solenoid valve for automatic replenishment. When the level drops to the set low point, the solenoid valve opens to feed material. When the high point is reached, it closes automatically. The tank bottom outlet connects to the suction pipe of the filling main unit through piping, providing a continuous material source for filling.
2. Core Units of the Filling Main Unit
Liquid suction cylinder group: Cylinders are arranged symmetrically on both sides. Each cylinder corresponds to one filling head. Piston movement draws liquid from the storage tank into the cylinder body and then presses it out.
Filling head module: Each filling head is equipped with a small piston valve driven by a micro cylinder to control nozzle opening and closing. During filling, the nozzle first inserts into the bottle, then opens the valve to fill while slowly rising. This achieves liquid-level-following filling and reduces foam.
For filling machine builders and maintenance teams, Hansheng Automation can machine custom non-standard components from customer drawings, such as filling nozzles, valve spools, piston rods, bottle guide blocks, and changeover fixtures, in single pieces or small batches.
Positioning system: Cylinder-driven stop rods are installed at the inlet and outlet. Together with bottle neck clamping devices, they ensure precise bottle positioning and complete alignment between the nozzle and bottle mouth.
3. Conveying and Control System
Variable-frequency speed-controlled conveyor: A frequency converter controls the motor for stepless speed regulation. Photoelectric switches detect the number of bottles.
Working process: After the set number of empty bottles is detected, the inlet cylinder extends to block subsequent empty bottles, and the conveyor pauses. The filling heads descend and begin filling. After completion, the filling heads rise, and the outlet cylinder retracts to release the filled containers.
Some models can be optionally equipped with a rotary capping mechanism, using a high-energy magnet capping device, and a bottle washing module with a stainless steel frame and multi-directional spray system.
Through the coordination of pneumatic components and the electrical control system, this structure achieves a fully automated process from empty bottle positioning and metered filling to finished product output. Filling accuracy can reach within ±0.5%.
