DE4342142C2 - Device for filling bottles or similar containers with a liquid filling material - Google Patents

Description

The invention relates to a device according to the Preamble of the claim.

A device or a filling system of this type is known (DE 42 13 737 A1). The known device has u. a. the Advantage that the rinsing and the partial pretensioning of the respective container in the pretensioning phase under immediate Use of the return gas from the return gas duct takes place with what a very significant reduction in total consumption Inert or CO2 gas reached when operating a filling machine can be. To ensure the highest possible quality and durability To achieve the filled product is in the known case also provided that by appropriate Valve control only the return gas, d. H. the gas with a high proportion of inert gas or CO2, in the return gas channel is routed, so neither air, nor sterilization medium, with which in the known case to further increase the quality and durability of the containers on the inside surfaces in a pretreatment preceding the pretreatment phase treatment phase, gets into this return gas duct.

A disadvantage of the known device that for Control the functions and gas paths of each filler a complex slide valve control device needed, in addition to a single, individual controlled control valve on each filler.

The object of the invention is to show a device which while maintaining the features and benefits of known device with regard to the formation of Valve control is significantly simplified.

The device is appropriate for solving this task formed the characterizing part of claim 1.

The advantages of the invention are that with elimination complex valve disc control devices the valve control with a small number of individual taxes cash control valves, for example with a total three control valves if no previous treatment with a sterilization medium or steam is required or is desired, or with a total of only four control valves len if previous treatment with the Sterilisa tion medium is necessary.

The control valves are those in the invention, each its own actuator, for example one pneumatic or electrical actuation device point and with this actuator between one open position in which a flow connection between the two connections of the respective control valve, and a closed position are controllable in the Connection is broken.

The first control valve has two functions, i. H. it controls the return gas flow from the return gas duct in the pre tension phase, d. H. when rinsing as well as if necessary at least partially prestressing the respective container, and indeed over the section of the liquid channel. Farther the first control valve also controls the flow of the return gas during the filling phase back into the return gas channel, whereby this return gas flow takes place via the return gas path, which with the Container interior communicates. This double function is the simple design of the first control valve thereby possible in the connection between the tax valve and the part of the valve following the liquid valve Liquid channel the first, designed as a check valve Dete self-locking valve device is provided.

Further developments of the invention are the subject of the Unteran claims.

The invention is described below with reference to the figures Embodiments explained in more detail. Show it:  

Figure 1 in a simplified representation and in section of one of the filling elements of a filling machine, which is provided on the circumference of a rotating type of the filling machine rotating around a vertical machine axis.

Fig. 2 is a similar representation as Fig. 1 in a further possible embodiment of the invention.

In Fig. 1, 1 is the filling element of a filling machine of the rotating type, which is arranged together with other similar filling elements 1 on the circumference of a rotor part 2 of the filling machine rotating around the vertical machine axis.

The filling element 1 essentially consists of a housing 3 , in which a liquid channel 4 is formed in a conventional manner, the upper area of which is connected to the interior 5 of an annular bowl 6 , which serves to supply the liquid filling material and is provided on the rotor part 2 is. With its lower area, the liquid speed channel 4 is connected to the upper end of a long filling tube 7 , which is arranged axially with a vertical filling element axis VA and projects beyond the underside of the filling element 1 . At the lower end, the housing 3 is provided with a housing part 3 ', through which the filling tube 7 extends and in which an annular channel or return gas path 8 is formed which closes the filling tube 7 and is open on the underside of the filling element and at one end with its mouth 9 in a sealing position against the underside of the filling element or against a seal there 10 of a centering tulip 11 pressed bottle 12 with the interior of which is connected.

In the liquid channel 4 , the valve body 13 of the liquid keitsventiles 14 is arranged, which is shown in Fig. 1 in the open position. The valve body 13 is a pneumatic element for controlling the liquid valve 14 , for. B. assigned a pneumatic cylinder 15 .

On the rotating rotor part 2 , there is still a steam channel 16 for all filling elements 1 , a supply or tensioning gas channel 17 for a fresh inert gas under pressure (tensioning gas pressure) (for example CO2 gas), a return gas channel 18 for a under pressure ( Return gas pressure) standing and a high proportion of CO2 gas return gas and a residual gas or collection channel 19 are provided.

The following connections continue to exist for all of the filling elements 1 to these aforementioned channels 16-19 :
A line 20 provided with a pressure regulator for supplying the steam to the steam channel 16 and for maintaining a predetermined steam pressure in the steam channel 16 ;
provided with a common pressure control 22 lines 23 and 24 for supplying the inert gas from an inert gas source to the gas space 5 'of the ring bowl 6 not taken up by the liquid filling material and to the tensioning gas channel 17 and for maintaining a given tensioning gas pressure in the gas space 5 'and span gas channel 17 ;
a line 25 connected to line 24 with an additional pressure control device 26 for maintaining a predetermined return gas pressure in the return gas channel 18 , the pressure in this channel being lower than the pressure in the tensioning gas channel 17 ;
a line 27 with a control valve 29 controlled by a level controller 28 in the ring bowl 6 for supplying the liquid filling material;
a line 30 that connects the collecting channel 19 with the atmosphere.

To control the various functional sequences during filling, each filling element 1 has a total of four pneumatically controlled control valves 31-34 , each of which has its own actuating element 31 '- 34 ' (cylinder) and which are connected to each filling element 1 as follows:

Control valve 33

On the input side via a connecting channel 35 with the return gas channel 18, on the output side via a connecting passage 36 with check valve 37 with the direction of flow of liquid product following the liquid valve portion 4 'of the liquid channel 4 and the output side via a connecting channel 38 with throttle 39 with the return gas path. 8

The check valve 37 is designed such that it opens for a flow of a flow medium into the liquid channel 4 and blocks it for a flow in the opposite direction.

Control valve 31

On the inlet side with the steam channel 16 and on the outlet side via a connecting channel 40 with the connecting channel 36 between the outlet of the control valve 33 and the check valve 37 .

Control valve 32

On the input side via a connecting channel 41 with the connecting channel 38 between the throttle and the return gas path 8 and on the output side via a connecting channel 42 with the clamping gas channel 17 .

Control valve 34

On the input side via a connecting channel 43 , in which a parallel arrangement of a self-locking valve 44 and a throttle 45 is arranged, with the collecting channel 19 and on the output side via a connecting channel 46 with the interior of the filling tube 7 or section 4 ′ or with that between the filling tube 7 and the check valve 37 formed th portion of the connecting channel 36th

Furthermore, the control valve 34 is connected on the input side to the return gas path 8 or to the part of the connecting channel 38 which extends between this return gas path and the throttle 39 .

The valve 44 is designed such that it blocks a flow in the connecting duct 43 in the direction of the collecting duct 19 when a pressure difference between the connections of the valve exceeds a predetermined threshold value.

With the filling element 1 , the mode of operation described in more detail below is possible by appropriately controlling the liquid valve 14 and the control valves 31-34 , the following description assuming that the liquid valve 14 and the control valves 31-34 are each in the closed state, unless the open state of such a valve is expressly stated.

1. Steam pre-rinse

For this process step, the bottle 12 is raised to such an extent that although its mouth 9 is adjacent to the seal 10 , there is still a gap between the mouth 9 and seal 10 .

The control valve 31 is opened so that a full steam flow flows into the filling pipe 7 via this valve and the check valve 37 . The steam exits at the lower, open end of the filling pipe 7, then flows inside the bottle 12 upward, abzuströmen in the environment to eventually in the region of the bottle mouth. 9

A small, but negligible amount of steam reaches throttle 39 in return gas path 8 and from this channel directly into the atmosphere. A likewise small and negligible amount of steam reaches the collecting duct 19 via the throttle 45 .

The steam stream emerging at the lower end of the filling pipe displaces the air from the bottle 12 and kills any microorganisms present in the bottle.

2. Steam rinse

The bottle 12 is raised to such an extent that it now rests with its mouth 9 sealed against the filling element 1 via the seal 10 . The control valve 31 is still open. The steam continues to flow into the bottle 12 via the lower, open end of the filling tube 7 and flows out into the collecting channel 19 via the valve 44 which is kept open by spring force. The valve 44 is set so that it remains open up to a flushing or overpressure of approximately 1.0 to 1.5 bar and blocks a flow into the collecting channel 19 at a higher overpressure.

3. Displacing the steam from the bottle 12

For this process step, the control valve 33 is opened, via which gas then flows from the return gas channel 18 and the opening check valve 37 into the filling tube 7 and out of this into the bottle 12 , so that the steam correspondingly from the bottle via the one opened by the spring Ball valve 44 is displaced into the collecting channel 19 . As a result, small, but negligible amounts of gas flow from the return gas duct 18 also through the restrictors 39 and 45 into the collecting duct 19 .

4. Preload bottle 12 with span gas

The control valves 32 and 34 are opened for this method step. About the filling tube 7 and the return gas path 8 , the bottle with the CO2 gas from the span gas channel 17 is pre-tensioned. Due to the substantially higher than the closing pressure of the valve 44 pressure of the tensioning gas channel 17 , the valve 44 closes the gas path or the connecting channel 43 to the residual gas channel 19 , so that except for a slight, negligible portion that flows through the throttles 39 and 45 when No prestressing gas is lost in the collecting channel 19 .

5. Slow filling

For this step, the control valve 33 is opened ge. Furthermore, the liquid valve 14 is opened. After the liquid valve has been opened, the filling material flows into the bottle 12 via the filling pipe 7 . The CO2 gas in the bottle is displaced via the connecting channel 38 , the throttle 39 , the opened control valve 33 and the connecting channel 35 into the return gas channel 18 and can then be used for the above process step 3 when filling another bottle 12 . The inflow or filling speed results from the cross section of the throttle 39 and from the pressure difference between the pressure in the bottle 12 and the pressure in the return gas duct 18 . The pressure difference at the check valve 37 closes the connecting channel 36 to the filling pipe 7 , so that no filling material can flow through this connection. The valve 44 remains closed because of the high differential pressure between the pressure in the bottle 12 and the pressure in the collecting channel 19 .

6. Quick fill

In this working phase, with the liquid valve 14 still open, the control valve 32 is opened, while the control valves 31 , 33 and 34 are closed. When the control valve 32 is opened, an unthrottled connection is established between the interior of the bottle 12 and the return gas channel 18 via the connecting channels 41 , 42 and 38 and the opened control valve 32 , via which the gas displaced by the liquid filling material from the bottle 12 into the tensioning gas channel 17 is displaced. This results in a high filling speed, which is essentially determined by the liquid level in the ring bowl 6 . This is slightly increased by the amount of gas flowing through the throttles 39 and 45 into the collecting duct 19 .

7. Brake and correction fill

For this method step, the control valve 33 is opened while the liquid valve 14 is still open, while the control valves 31 , 32 and 34 are closed. By closing the control valve 32 and opening the control valve 33 , the same conditions as in method step 5 (slow filling) are again achieved, ie there is a brake and correction filling until a fill level response probe and until the liquid valve 14 closes.

8. Filling and calming

In this step, the control valve 33 remains in the open position.

After the liquid level of the filling material in the bottle has reached the probe determining the filling heights, a signal which causes the liquid valve 14 to close is generated. After the liquid valve is closed, the pressure in the interior of the bottle decreases via the throttle 39 to the pressure prevailing in the return gas channel 18 . At this pressure level, for example below the saturation pressure (approx. 1.0-2.0 bar overpressure), the contents in the bottle 12 are relieved and calmed down in a time-controlled manner. Due to the pressure in the return gas duct 18 , the valve 44 remains in the closed position.

9. Relieve the rest

To initiate this step, the control valve 33 is closed when the liquid valve 14 is closed and the control valves 31 , 32 and 34 are closed, as a result of which the pressure in the interior of the bottle 12 is reduced to the atmospheric pressure level of the collecting channel 19 via the throttle 45 .

The pressure reduction up to a pressure of approx. 0.5 bar is regulated via the throttle 45 . If the closing pressure of the valve 44 falls below, for example the pressure of 0.5 bar, this valve opens, so that a quick relief to atmospheric pressure then takes place via the connecting channel and the open valve 44 .

10.Emptying the filling tube 7 and lowering the bottle 12

To initiate this step, the control valve 34 is opened, so that then via this control valve and the connecting channels 43 and 46 and the open valve 44, a connection between the return gas path 8 and the filling tube 7 is made and thereby the filling tube 7 when the bottle is lowered 12 is emptied into this.

11. Aftertreatment of the filling pipe at the loss angle of filling Machine

For this process step, the control valves 31 and 34 are opened at the loss angle of the rotary movement of the filling machine, that is to say in the angle of the rotary movement of the filling machine formed between the bottle ejection and bottle insert, whereby the filling pipe 7 is blown out with steam via the connecting channel 40 and the check valve 37 and At the same time, steam also escapes via the return gas path 8 or its opening for treating the underside of the filling element 1 via the connecting channel 46 , the opened control valve 34 and the connection between the connecting channels 43 and 38 .

12. Alternative process step

The above method step 8 can alternatively also be followed by a method step in which, when the pressure of the return gas channel 18 has set in the bottle 12 after method step 8 with the control valve 33 open, the control valve 34 is opened. Via the opened control valve 34 , a ventilation connection between the filling tube 7 and the bottle 12 or the interior or gas space (bottle neck) of the bottle 12 not occupied by the filling material is established. This then results in a level compensation between the fill level in the bottle 12 and in the fill tube 7 . Since, in this method step, as mentioned above, the control valve 33 is open and the self-closing valve 44 is in the closed position, the pressure of the return gas channel 18 is maintained in the gas space of the bottle 12 and in the filling tube 7 .

The residual discharge then takes place after the closing of the control valves 33 and 34 via the throttle 45 in the collecting channel 19 , as described above for method step 9 be. Process steps 10 and 11 then follow.

Fig. 2 shows a filling element 1 a, which differs from the filling element 1 of FIG. 1 essentially in that a steam treatment and with it the corresponding control valve 31 and the connecting channel 40 are omitted. Furthermore, the annular bowl 6 a provided on the rotating rotor part 2 a is completely filled with the liquid filling material and the line 25 for the return gas duct 18 is separately connected via the pressure control device 26 to an outlet for excess return gas. With 47 in Fig. 2, a ventilation vessel for the interior of the ring bowl 6 a is designated. This venting vessel is automatically vented via a line 49 having a control valve 48 in dependence on a level meter 50 .

Otherwise, the filling element 1 a or the filling machine having these filling elements corresponds to the filling element or the filling machine of FIG. 1. In particular, the control valves 32-34 and the connections and connections also correspond to those of FIG. 1.

With the filling element 1 a, the following method of operation is possible, the liquid valve 14 and the control valves 32-34 again being in the closed position in the method specified below, unless the open position of a control valve is expressly indicated.

1. Displace air with return gas from bottle 12

For this process step, the control valve 33 is opened so that 37 return gas flows from the return gas duct 18 into the filling pipe and from this into the sealing element with the filling element 1 a via this valve and the opening check valve, from which the return gas path flows 8 , the connecting channel 38 , the opened valve 44 and the connecting channel 43 the air in the bottle is displaced into the collecting channel 19 . A small, but negligible amount of return gas flows out through the throttle 39 .

2. Prestress bottle 12 with CO2 gas

As soon as an atmosphere consisting predominantly of CO2 gas has been set in the bottle 12 at the end of method step 1 , the control valve 33 is closed and the control valve 32 is opened, so that now CO2 gas from the tensioning gas channel 17 via the connecting channel 42 , the opened control valve 32 , the connecting channel 38 and the return gas path 8 can flow into the bottle 12 . Due to the pressure control, the pressure in the clamping gas channel 17 is kept approximately at the pressure level in the ring bowl 6 a. Due to the significantly higher pressure of the CO2 gas from the span gas channel 17 or due to the high pressure difference, the valve 44 closes the connecting channel 43 to the collecting channel 19 , so that only a small, negligible amount of CO2 gas via the throttle 45 in reaches the collecting channel 19 .

3. Slow filling

The control valves 32-34 are closed. Immediately after a pressure equalization between the pressure in the clamping gas channel 17 and the pressure in the bottle 12 has taken place, the liquid valve 14 opens and the liquid filling material flows into the bottle 12 via the filling pipe 7 . The CO2 gas displaced from the bottle 12 flows through the return gas path 8 , the connecting channel 38 , the throttle 45 and the connecting channel 43 into the collecting channel 19 . The Einström- and Füllge speed is therefore dependent on the cross section of the throttle 45th The filling phase is maintained, for example, by a time control until the lower end of the filling tube 7 is immersed in the rising level of the filling material. The check valve 37 prevents penetration of the liquid filling material from the filling pipe 7 or liquid channel 4 into the connecting channel 36 and adjoining gas paths or connections.

4. Quick fill

For this process step, the control valve 33 is also opened with the liquid valve 14 still open, which results in an additional gas path via the throttle 39 into the return gas duct 18 . This results in a higher filling speed.

5. Brake filling

With the liquid valve 14 still open, all the control valves 32-34 are closed. This results in the same conditions as in method step 3 and thus in the narrowing bottle neck of the bottle 12 to a rising filling level, a slowdown of the Füllge speed to that of the filling phase.

6. Pre-discharge

After the response of the probe determining the fill level, the liquid valve 14 is closed. Immediately thereafter, the control valve 33 is opened so that through the throttle 39 and the connecting channel 35 occurs within the bottle 12 to the pressure level of the return gas channel 18, a reduction of the pressure and held thus a pre-relief and calming of the liquid content in the bottle 12 under return gas pressure may ,

The cross section of the choke 39 is larger than the cross section of the choke 45 . The amount of gas flowing into the collecting duct 19 via the throttle 45 is thus compensated.

On the preferably below the saturation pressure Return gas pressure is thus relieved and calmed down of the liquid filling material instead.

7. Residual relief

By closing the control valve 33 , this step is initiated so that then all control valves 32-34 and also the liquid valve 14 are closed. The throttle 45 then relieves the atmospheric pressure of the collecting duct 19 .

8. Empty the filling pipe and then lower the bottle

Until the control valve 34 opens, the check valve 37 keeps the gas path in the filling tube 7 closed. Via the opened control valve 34 , a connection is established between the filling pipe 7 and the return gas path 8 , so that the filling pipe 7 is emptied when the bottle 12 is lowered.

In principle, level compensation is also possible for the filling element 1 a even before the bottle 2 is removed, with the following method steps:

9. Level compensation under return gas pressure

In this process step, which follows the process step 6 , the control valve 34 is also opened with the control valve 33 still open, so that the liquid level in the filling tube 7 and in the bottle 12 can be compensated for under back gas pressure (pressure of the back gas channel 18 ).

10. Residual discharge to atmospheric pressure

To initiate this step, the control valve 33 is closed and the control valve 34 remains open, so that a residual relief can be made to the atmospheric pressure of the collecting channel 19 via the throttle 45 .

The ventilation of the filling pipe 7 for the final emptying when the bottle 12 is lowered is likewise carried out via the opened control valve 34 .

In principle, it is also possible in the embodiment shown in FIG. 2 that the collecting channel 19 and the valve 34 are omitted to further simplify the construction. The return gas then flows directly into the open via the throttle 45 . The pre-flushing of the bottle 12 from the return gas channel 18 before the pre-tensioning of the bottle 12 must then take place in this very simplified embodiment with the bottle not yet in the sealing position with the filling element 1 a.

For the purposes of the invention, “saturation pressure” is a pressure to understand, after the completion of the filling phase and at Just relieve no ascent or only a little smooth rise of undissolved CO2 from the liquid Filling is done.

The invention is characterized by maintaining all the functions required for filling by a particularly simple construction, which only requires a total of four control valves 31-34 with associated self-closing valves 37 and 44 for steam treatment and only three control valves 32-34 when steam treatment is dispensed with , together with the self-closing valves 37 and 44 and the restrictors 39 and 45 .

The invention also avoids complex slide slides ben control valve devices on the filling elements, namely while maintaining the benefit of optimal use of the CO2 gas by partially returning this gas to the Return gas duct for further use.

It is understood that prior to commissioning of the device according to the Invention, the ring bowl 6 or 6 a with the liquid contents, the clamping gas channel 17 and the return gas channel 18 with the inert gas and and also the steam channel 16 , if present, filled with steam and the respective operating pressures in the ring bowl 6 and 6 a and in the aforementioned channels can be set.

The invention has been described above using exemplary embodiments described. It is understood that changes as well as variance lungs are possible without thereby of the invention underlying inventive concept is left.  

LIST OF REFERENCE NUMBERS

1

.

1

a filling element

2

.

2

a rotor part

3

casing

3

'' Housing part

4

liquid channel

4

' Section

5

inner space

5

'Gas room

6

.

6

a ring bowl

7

filling pipe

8th

return gas

9

muzzle

10

poetry

11

centering bell

12

bottle

13

valve body

14

liquid valve

15

pneumatic cylinder

16

vapor channel

17

Span gas channel

18

Return gas channel

19

collecting duct

20

management

21

.

22

Pressure control device

23

.

24

.

25

management

26

Pressure control device

27

management

28

level controller

29

control valve

30

management

31-34

control valve

31

'-

34

'' Actuator

35

.

36

connecting channel

37

self-regulating valve (check valve)

38

connecting channel

39

throttle

40-43

connecting channel

44

Valve

45

throttle

46

connecting channel

47

bleed housing

48

control valve

49

management

50

Power meter

Claims (14)

1. Device for filling bottles or the like. Containers ( 12 ) with a liquid filling material, with at least one filling element ( 1 , 1 a) having a liquid valve ( 14 ) in a liquid channel ( 4 ) and with at least one valve associated with the filling element and valves ( 31-34 ) having valve control for controlling gas paths formed by connecting channels ( 35 , 36 , 38 , 40-43 , 46 ) at least during a prestressing phase in which the container located in the sealing position with the filling element ( 1 , 1 a) is prestressed , as well as during a subsequent filling phase in which the container in the sealing position with the filling element ( 1 , 1 a) is filled with the liquid filling material via the liquid channel ( 4 ) when the liquid valve ( 14 ) is open, the valve control unit being a first valve ( 33 ), which in a gas path between a return gas path ( 8 ) of the filling element ( 1 , 1 a) and a return gas channel ( 17 ) and the same at the same time in a gas path between the return gas channel ( 18 ) and a section ( 4 ') of the liquid channel following the liquid valve ( 14 ) in the flow direction, and via which, during the filling phase, at least temporarily the filling material from the incoming gas via the return gas path ( 8 ) ver displaced return gas from the container is discharged into the return gas duct ( 18 ) and in the pretensioning phase, the purging and optionally also the at least partial pretensioning of the container takes place using the return gas from the return gas duct ( 18 ), characterized in that all control valves ( 31-34 ) of the valve control each individually controllable individual valves, each with its own actuating element ( 31 '- 34 '), that the first control valve ( 33 ) with a first connection with a first, to the return gas channel ( 18 ) leading first connecting channel ( 35 ) and with a second connection with a second and third connecting channel ( 36 , 38 ), of which the second connecting channel opens into the section ( 4 ') of the liquid channel ( 4 ) and the third connecting channel ( 38 ) opens into the return gas path ( 8 ), and that in the second connecting channel ( 36 ) at least one first self-locking valve arrangement ( 37 ) is provided, which allows a flow in the direction from the second connection of the first control valve to the section ( 4 ') of the liquid channel ( 4 ), but blocks a flow in the opposite direction. 2. Device according to claim 1, characterized in that the first self-locking valve device is a return check valve ( 37 ). 3. Apparatus according to claim 1 or 2, characterized in that in the third connecting channel ( 38 ) at least one first throttle arrangement ( 39 ) is provided. 4. Device according to one of claims 1-3, characterized in that a second control valve ( 32 ) of the valve control with a first connection via a fourth connecting channel ( 42 ) with a space or clamping gas channel ( 17 ) for fresh, pressurized inert Gas and with the second connection via a fifth connecting channel ( 41 ) with the return gas path ( 8 ). 5. The device according to claim 4, characterized in that the fifth connecting channel ( 41 ) opens into a part of the third connecting channel ( 38 ) lying between the first throttle arrangement ( 39 ) and the return gas path ( 8 ). 6. Device according to one of claims 1-5, characterized in that the valve control has a third control valve ( 34 ) which is connected with its first connection to a sixth connecting channel ( 43 ) which is open to the environment or in one Collection channel ( 19 ) opens out that a second throttle arrangement ( 45 ) and in parallel to this a second self-locking valve arrangement ( 44 ) are provided in the sixth connecting channel, so that the second self-locking valve arrangement ( 44 ) is designed in such a way that it is at a predetermined one Pressure difference exceeding the threshold value on the second valve arrangement blocks and opens at a pressure difference below the threshold value that the first connection of the third control valve ( 34 ) continues via a gas path which does not have the second throttle device ( 45 ) and the second self-closing valve ( 44 ) is connected to the return gas path ( 8 ), and that the second Connection of the third control valve via a seventh connecting channel ( 46 ) with the mentioned section ( 4 ') of the liquid speed channel ( 4 ) is in communication. 7. The device according to claim 6, characterized in that the sixth connecting channel ( 43 ) with one between the first throttle device ( 39 ) and the return gas path ( 8 ) lying part of the third connecting channel ( 38 ) is the verbun. 8. Device according to one of claims 1-7, characterized in that the valve control has a fourth control valve ( 31 ) which is arranged in the gas path between a steam channel ( 16 ) and the mentioned section ( 4 ') of the liquid channel. 9. The device according to claim 8, characterized in that the fourth control valve ( 31 ) via a non-return valve acting or designed self-closing valve device, preferably via the first valve device ( 37 ) with the mentioned part of the liquid channel is connected, and that the self-closing valve device ( 37 ) allows a flow in the liquid channel, but blocks for a reverse flow. 10. The device according to claim 8 or 9, characterized in that the fourth control valve ( 31 ) via an eighth connecting channel ( 40 ) with a between the first control valve ( 33 ) and the first self-locking valve device ( 37 ) part of the second connecting channel ( 36 ) opens. 11. Device according to one of claims 1-10, characterized in that the control valves ( 31-34 ) of the valve control are pneumatically operable valves. 12. Device according to any of claims 1-11, characterized in that the filling element (1, a 1) has a filling tube (7), in which the following on the liquid valve (14) portion 4 'of the liquid channel (4) at least partially is formed, and that the return gas path ( 8 ) is an annular channel enclosing the filling tube ( 7 ). 13. Device according to one of claims 4-12, characterized in that the liquid channel of the Füllelemen tes ( 1 ) with an interior ( 5 ) of an annular vessel ( 6 ) is connected, in which a gas space ( 5 ') for the liquid filling material the inert gas under the span gas pressure is formed, and that the gas space ( 5 ') is connected to the span gas channel ( 17 ) via a connection. 14. Device according to one of claims 4-13, characterized in that the return gas channel ( 18 ) via a pressure control device ( 26 ) with the space or the clamping gas channel ( 17 ) for fresh, pressurized inert gas is connected.