F.A.Q.
 

- THE FUNCTION OF A RINSING MACHINE
-
HOW RINSING MACHINES, BLOWING MACHINES AND STERILIZERS WORK

WHAT A RINSING MACHINE IS FOR  
A Poggio machine performing the rinsing.

From ancient times, winemakers have used to rinse the bottles before bottling the wine. By pouring around half liter wine from bottle to bottle to rinse and clean them from foreign particles, dust or sand.
Cleanness and hygiene are requirements deeply rooted in the winemaking tradition.
From this premise, also the modern bottling plants (of course not only the enological ones) perform rinsing or sterilization processes with machines with the more refined features the higher the production speed is.
These machines, called rinsing machines, are always installed at the beginning of a bottling line and can be both stand alone machines, i.e. equipped with their own chassis, drive etc, and units fitted in more complex machines performing also the filling, the corking, etc.
The main features of the rinsing machines are the working speed, the injection time of the cleaning agent (usually water), the dripping time of the liquid and the possibility o performing other treatments (double treatment machines).
Another very important feature to take into account when choosing a rinsing machine is the material with which it is manufactured. During the rinsing the machine gets wet (sometimes even with aggressive media, as for sterilizers) so it is a matter of essence that it is manufactured of high quality stainless steel. Another essential requirement that all parts in contact with the detergent liquid are manufactured with (metal and plastic) materials certified for food usage.

HOW RINSING MACHINES, BLOWING MACHINES AND STERILIZERS WORK  

THE RINSING MACHINE
The rinsing machine uses a jet of sterile water under pressure, generally 3 bars, for the mechanical removal of the impurities inside the bottle such as dust, silicon dust, small impurities, and pieces of glass. The injection time is adjustable and generally ranges between 0.5 and 2 seconds.
After the injection it is necessary for the bottle to undergo a dripping time during which it remains overturned and the injected water drips out of the bottle. Generally this phase lasts from 6 to 8 seconds and it is particularly important in case it is requested that only a minimum residual rinsing liquid remains in the bottle, for instance when bottling spirits, in that case too big a quantity of liquid could affect the alcohol degree.
The values of the injection and dripping times, together forming the total cycle time, depends on the speed of a machine and the number of its grippers. For further details go to "How to calculate the times".
For details about the FM model machine go to the "Complete description of the FM model machine".

THE BLOWING MACHINE
The blowing machine uses a jet of sterile air at the pressure of 6 bars or more for the mechanical removal of the impurities inside the bottle, such as residual silicon, glass and small impurities. The blowing machine is used instead of the rinsing machine when it is absolutely necessary not to have any residual water (or other rinsing liquid) in the bottles before the bottling, like in the case of oil industries.
The blowing machine has an injection time of 3 seconds but, since it does not need any dripping time, with the same number of grippers it can work at remarkably higher speeds than a rinsing machine (about 30% higher).
To know more about the actual performances of these machines go to “How to calculate the times".
For details about the FM model machine go to the "Complete description of the FM model machine".

THE STERILIZER
The sterilizer uses or more injections or chemical aggressive agents removing the impurities mechanically and reducing the bacterial charge inside the bottles chemically.
The sterilizers can be single-treatment machines, i.e. with one injection, or double-treatment machines, i.e. with two injections. The latter consists of a first sterilization operation by means of a chemical compound (e.g. water solution with very low content of sulphuric acid) followed by the rinsing with sterile water.
The values of the injection and dripping times are similar to those of the rinsing machine in case of a single-treatment machine.
They change remarkably in case of double-treatment machines since, needles to say, the total time is to be subdivided in the first injection, the period of time between the first and the second injection (which often serves for the activation of the chemical aggressive agent ), the second injection and the final dripping. Go to "How to calculate the times" for further information.
For details about the FM model machine go to the "Complete description of the FM model machine".

 
 

ENOPOGGIO S.r.l.
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