Patent Application
20100154920
The present invention relates to a device for bottling liquids and in particular those liquids which contain particles, such as fruit juices which contain pieces of fruit for example. Various devices for bottling beverages are known from the prior art. It is customary that a liquid is conveyed from a reservoir via a connecting line into a filling device, and this filling device is in turn placed at a mouth of the container that is to be filled, in order to fill the latter with the liquid. These filling devices usually have valve mechanisms such as cone valves. These valve mechanisms allow a reliable and safe filling of conventional beverages into these containers. Sometimes, however, the bottling of beverages which contain particles is problematic, such as fruit juices which contain a relatively high proportion of large pieces of fruit for example.
In order to fill containers with still or else carbonated products, use is usually made of a filling valve which can be switched opened and closed by means of a cone or piston. The filling quantity is determined via the opening and closing of this cone. However, it is also possible to throttle the product in an inlet of the line, or else to make this throttle switchable in order to bottle for example at two different speeds.
When filling for example using the abovementioned free-jet filling system, a non-uniform distribution of the pieces of fruit at the cone may lead to splashing (also referred to as spillage) of the filling valve. These splashes are disadvantageous since they can lead for example to the formation of mould on the outside of the bottle. This problem occurs both at a start of a filling process and also at the end of the filling process or during a process of closing said valve. In particular, the free-jet valves known in the prior art have led to such undesirable splashes.
The object of the present invention is therefore to provide an apparatus and a method which allow an improved bottling of liquids. In particular, the intention is to provide a possibility for being able to bottle more efficiently even liquids which contain particles, such as pieces of fruit for example. These objects are achieved according to the invention by the subject matter of the independent claims. Advantageous embodiments and further developments form the subject matter of the dependent claims.
A device according to the invention for filling containers with liquids and in particular with beverages comprises a reservoir for the liquid to be bottled and a connecting line for transporting the liquid from the reservoir to a filling device, wherein the filling device has a first valve device for controlling a liquid flow into the container.
According to the invention, the device has a second valve device arranged in the connecting line in series with the first valve device, wherein the quantity of liquid flowing past the second valve device and the quantity of liquid reaching the filling device are essentially identical.
The prior art, for example WO 2008/037338 A1, discloses devices for bottling beverages, wherein a plurality of reservoirs are provided and also valves which ultimately serve for mixing these beverages originating from the different reservoirs. In these cases, however, the quantity of liquid flowing past the valves assigned to the respective reservoirs and of the liquid which ultimately reaches the filling device is different.
By contrast, the device according to the invention is configured in particular in such a way that the connecting line has no branches at least between the second valve device and the filling device so that, after the second valve device, no further liquids which have not already passed the second valve device can reach the filling device.
Essentially identical quantities of liquid is understood to mean that these quantities of liquid are identical or approximately identical in particular in a regular operating mode. Slight differences may result for example due to leakages between the two valve devices.
In one advantageous embodiment, the second valve device is configured in such a way that it completely interrupts the liquid flow to the filling device at least temporarily during a bottling process. As mentioned above, the problem of splashes occurs in particular if the liquid flows past the first valve device during an opening or closing process. By virtue of the procedure according to the invention, the second valve device can be used to interrupt a liquid flow to the filling device and to the first valve device. During an interruption of this liquid flow, the first valve device can then be fully opened, and the beverage can then be bottled without any splashes.
The invention therefore describes a system composed of two valve devices connected in series, wherein preferably the first valve device and the second valve device are switchable independently of one another, that is to say that the switching positions of these valves are not coupled to one another. It is pointed out here that the last valve device in the series before the outlet (into the container) need not necessarily be closed. Preferably, the second valve device is at a greater distance from the reservoir than from the first valve device. With particular preference, the second valve device is arranged close to the filling device, so that a product flow to the filling device can quickly be interrupted by a closing of this second valve device.
By virtue of the upstream valve, that is to say the second valve device, a valve cone of the first valve device for example can be lifted or opened without the product escaping. The product then runs in a temporally controlled manner through the relatively large flow cross-section which is now the same right from the start. This prevents any deflection of the jet due to jammed pieces of fruit in a small cross-section. During a closing process, splashing can also be avoided here due to an early closing of the product flow by means of the second valve device. In other words, the product flow is switched off over a large cross-section and then the first valve device is immediately closed or else a gap remains open which is preferably so small that the product to be bottled does not automatically run out of the valve.
Preferably, a further valve device is provided which is arranged on said reservoir for the liquid. The quantity of liquid which passes from the reservoir into the connecting line is thus also variable. However, a further valve device may also be arranged in a supply line to the reservoir.
In a further advantageous embodiment, the apparatus has a control device which is configured in such a way that it controls the first valve device and the second valve device as a function of one another during a bottling process with a certain liquid. It is thus possible—as described above—that, at the start of a process of filling into a certain container, firstly the first valve device is opened and only then is the second valve device opened.
Preferably, the apparatus is designed for bottling particle-containing beverages. This may be expressed for example in the nature of the flow cross-sections of the two valve devices.
In a further advantageous embodiment, a flow measuring device is arranged upstream of the second valve device between the reservoir and the second valve device. A determination of the bottling quantity by means of weighing cells or other measurement methods is also conceivable.
In a further advantageous embodiment, the first valve device comprises a displaceable valve cone. This valve cone can in this case reduce or completely close a flow cross-section.
In a further advantageous embodiment, at least one valve device, and particularly preferably at least the second valve device, allows stationary valve positions which lie between a complete opening and a complete closing of the second valve device. In this way, as a function of a beverage to be bottled, a certain closed state or open state of the valve can be freely defined which may differ from an absolutely closed state or also a completely open state. For example, it is possible that the second valve device can be controlled or switched between an open position in which the flow volume is slightly limited and a closed position in which the product flow is only almost completely limited. Preferably, at least one such stationary valve position can be set. Preferably, a plurality of such stationary intermediate positions of the second valve device are possible.
The present invention also relates to a method for bottling liquids into containers, wherein the liquids are conveyed in particular via a connecting line to a filling device and are filled into the containers by means of the filling device, and wherein a first valve device arranged in the filling device influences or controls a liquid flow from the filling device into the container. According to the invention, the liquid is conveyed via a second valve device arranged in the connecting line, wherein the quantity of liquid flowing past this second valve device essentially corresponds to the quantity of liquid arriving at the filling device.
It is thus also proposed with regard to the method to provide two valves in series which cooperate during the filling of the containers. Preferably, at least once during a bottling process, firstly the first valve device is at least partially opened while the second valve device is still closed and then the second valve device is opened. Preferably, at least one of the valve devices is at least at times completely open, and in particular the first valve device is at times completely open.
Preferably, at the start of a process of bottling the liquid into a certain container, firstly the first valve device is at least partially opened and only then is the second valve device at least partially opened (from a closed state). By virtue of this procedure—as mentioned above—the occurrence of splashes due to pieces of fruit jammed in the first valve device can be avoided.
In a further advantageous method, at least once during the bottling process and in particular at the end of the process of bottling the liquid into a certain container, firstly the second valve device is at least partially closed and then the first valve device is at least partially closed. In this way, the occurrence of splashes can be avoided also during the process of closing the valves.
Preferably, a particle-containing beverage is used as the liquid. Further advantageous embodiments will emerge from the appended drawing.
In the drawing:
Furthermore, there is arranged in the connecting line 6 a second valve device 14 which is thus connected in series with the first valve device 12 in respect of the liquid flow. This second valve device 14 is able to interrupt the flow of liquid completely. Preferably, the second valve device is a pneumatic shut-off valve or a membrane valve.
A flow measuring device 18 is provided between the second valve device 14 and the filling device 8. It is thus possible for the liquid flow to be in particular completely blocked also by the second valve device 14. During this closed state, an open state of the first valve device 12 can be varied, for example at the start of a filling process the first valve device 12 can be completely open during this period.
Reference 20 denotes a control device for controlling the two valve devices 12, 14. This control may take place in such a way that both at the start of the filling process and also at the end thereof the second valve device 14 completely blocks the flow while the first valve device alternates between an open position to a closed position and vice versa.
In the embodiment shown in
All of the features disclosed in the application documents are claimed as essential to the invention in so far as they are novel individually or in combination with respect to the prior art.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2008 064 318.1 | Dec 2008 | DE | national |
