Aseptic cold filling combination machine unit
This unit consists of a disinfectant bottle rinser, a sterile water bottle rinser, a filling machine, and a capping machine.
The bottles blown by the bottle blower are conveyed by star wheels into the disinfectant bottle rinser. In the disinfectant bottle rinser, the bottles are first turned 180°, then peracetic acid disinfectant is sprayed on the inner and outer walls of the bottles for a certain period of time for sterilization, and then they are left to drip dry for a certain period of time. The bottles are then turned 180° in the opposite direction and conveyed by star wheels to the sterile water bottle rinser.
The structure and principle of the sterile water bottle rinser are similar to those of the disinfectant bottle rinser, except that sterile water is used instead of peracetic acid as the rinsing medium. The sterile water bottle rinser adopts a two-step rinsing process, which has a better rinsing effect than continuous rinsing and is more water-saving.
After the bottles are thoroughly rinsed and dried, they are conveyed by star wheels to the filling machine. The filling machine uses non-contact filling valves to prevent cross-contamination through the filling valves. The aseptic filling valves use the volumetric metering method of electromagnetic flowmeters. Each filling valve is equipped with an automatic dummy cup, and during internal cleaning and disinfection, a cleaning and disinfection circuit is formed between the filling valve and the dummy cup through the feed pipe and the return pipe. To ensure reliable aseptic conditions, steam barriers are set on both sides of the dynamic seal of the material channel in the center tube of the filling machine to prevent bacteria from entering the material pipeline. A disinfectant water seal groove is set between the rotating parts of the filling machine and the outer cover to prevent external air from entering the isolation chamber. A bottle detection device is installed beside the bottle inlet star wheel of the filling machine to achieve the no-bottle-no-filling action. After filling, the bottles are rinsed at the bottle mouth and conveyed by star wheels to the capping machine.
Only the capping head of the capping machine is located in the clean room, and the rest of the transmission parts are arranged outside the clean room. A water seal groove is set between the rotating parts of the capping machine and the isolation cover to prevent external air from entering the isolation chamber. The capping machine is equipped with a stopper cylinder, which does not supply caps when there are no bottles; it is also equipped with a cap shortage detection sensor, which automatically stops when there are no caps. The capped products are conveyed to the conveyor belt by star wheels for output.
The bottle transfer star wheels of the combination machine adopt a bottle neck clamping and conveying form. When changing bottle types, if the bottle neck sizes are the same, all the star wheel bottle clamps do not need to be replaced.