1. Project Background and Customer Pain Points

A large drinking water production company in Henan Province decided to build a new 2L large-bottle mineral water production line to seize the large-package water market in household consumption and catering channels. However, the production of 2L large-size PET bottles presents unique technical challenges: First, the large weight of the bottles makes them prone to tipping or jamming at high speeds, requiring extremely high stability from the conveyor system; second, the large drop in liquid level during filling can easily lead to splashing or inaccurate liquid levels if the filling valve design is not reasonable; third, the large bottle packaging line occupies a large area, and the customer hopes to optimize the workshop layout and reduce factory infrastructure investment while ensuring a high production capacity of 15,000 bottles/hour.

2. Equipment Configuration and Core Technology

HF 15,000 Bottles/Hour Three-in-One Mineral Water Bottling Production Line was custom-designed to address the production characteristics of 2L large-bottle mineral water. This production line covers the entire process from water treatment and bottle blowing to filling and post-packaging. Key technological highlights include:

**Large Bottle Neck Handling Technology:** The rinsing, filling, and capping unit utilizes a neck-handling suspension transmission design throughout, avoiding the instability and tipping issues caused by traditional bottle-bottom-supporting methods when transporting 2L bottles, ensuring absolute stability even at high speeds.

**Gravity-Type Atmospheric Pressure Filling Valve:** Employing a high-precision, level-controlled atmospheric pressure filling valve, the liquid flows naturally into the bottle under its own weight, ensuring smooth air return and completely eliminating water splashing during large bottle filling. The filling level is precisely controlled, and all parts in contact with the liquid are made of high-quality SUS304 stainless steel with a polished finish, ensuring water hygiene.

**High-Efficiency Pneumatic Conveying and Integrated Line Operation:** The empty bottle preparation system uses a fully automatic bottle blowing machine. Blown 2L empty bottles are directly fed into the filling machine via a high-pressure pneumatic conveyor, avoiding contamination from manual contact. The entire production line is equipped with an advanced PLC and touchscreen control system. Photoelectric sensors in each section monitor the operating status in real time, enabling intelligent linkage such as no-bottle-no-fill, automatic shutdown for missing caps, and automatic overload alarms.

Seamless downstream packaging: After filling and capping, a high-pressure dryer removes water droplets from the bottles, followed by seamless integration with a fully automatic labeling/applying machine, inkjet printer, and PE film wrapping/carton packing machine, forming a highly automated closed-loop finished product packaging system.