DE7626905U1 - DEVICE FOR AUTOMATIC FILLING OF BOTTLES - Google Patents

Description

4β90Η «η · 1, **" * · · "8000 Munich 40,

Frelllorathstrasse 19 _η ι.ι ■ __ B ILl Bu- Eleenacher Strasse 17

P.O. Box 1140 oil pl.-lng. RH ealtr P, t.-Anw. Betzier

DIpl.-Phye. Eduard Desire

⁵¹⁰¹⁴ DIpl.-lng. W. H @ rrmann-Trentepohl

TelegrammanEChrlft: Telegrammanschrlft:

Bahrpatente Herne PATENTANWÄLTE Babetzpat Munich

Telex 08220853 Tolex 5215380

r ~ l bank accounts:

Bayerische Vereinebank Munich S52 Dresdner Bank AG Herne 7-520499 Postal check account Dortmund 658 68-467

■ W- «M 05 671 Sj / ag

Please indicate in the answer

Please send a letter to:

Munich

Pont-d-Mousson S.A. 91, Avenue de la Liberation, F-5400 Nancy / France

Device for the automatic filling of bottles

The innovation relates to a device with a filling nozzle for the automatic filling of bottles with liquids and especially with non-gaseous, so-called simple beveragesj such devices, taking place at the same pressure are provided with a liquid container and a vertical and tubular filling channel, the is in communication with the container at its bottom and has a lower casting part that is vertically displaceable and with is designed with a smaller cross-section than the neck of a bottle to be filled. This lower part of the filling channel is also provided with a flap and along the axis of the filling channel arranged inside the fixed ventilation pipe, the at its lower end is open, but the lower end with an opening for the entry of air into the interior of the filling bottle can penetrate. The ventilation pipe also delimits a seat of a flap on which the flap of the FUIlkanales can come to the facility or move away from it in order to

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to guide a pouring flow by moving the part of the channel forming the flap. These in general tubular arrangement is commonly used as a filling nozzle and is generally perpendicular in the form of one or more copies below the liquid container arranged and in this way forms a device called a bottle filling machine with the container.

Generally it is the one perpendicular to the axis of the filling nozzle arranged, to be filled bottle itself, which triggers the beginning and the end of its filling process, in which it moves the filling channel and thus actuates the flap.

The displacement of the filling channel takes place, for example, in such a way that it is located inside a on the liquid container connected sleeve or a guide tube. In devices according to the prior art is required for the Tightness between the filling channel and the guide tube or the guide sleeve can be shifted through the interposition Sealing organs taken care of between these two.

Such displaceable seals, however, have disadvantages. First of all, it is in terms of complete tightness and for hygienic reasons it is necessary to provide a suitably compressed sealing fitting between the guide sleeve and the filling channel. This compression can again, due to its insufficient pressure, carried out through the liquid itself with a pressing or pressure device as such a device would cause retention of fluid from which it is not hygienic Fermentation of the liquid could result.

Furthermore, through the compression of a sealing set, stress occurs when the filling channel is displaced the guide sleeve. These sliding or displacement loads

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The force generally exerted by the bottle to be filled is, however, for one made of a deformable plastic material existing bottle very large, so that there is a risk of deformation and destruction of the plastic bottle. Out For this reason one has concerns about using such bottles made of plastic material. In addition, such a system is required Slidable sealing fitting a completely smooth one Surface condition of the walls with the sealing set in Touching organs. Such a surface condition is difficult to realize and even if one makes it can, irreparable scratches or grooves inevitably occur due to the displacement movement during operation. In the end wear of the sealing fitting is unavoidable due to the displacement movement, so that the tightness in must be checked at certain intervals.

The object of the innovation is to provide a device for filling bottles that avoids the above Disadvantages allows.

The innovation thus relates to a filling device of the type indicated above and is characterized in that the lower part of the filling channel with an in the axial direction of the Filling channel deformable tubular casing is connected to the container.

Because of this connection through a deformable shell between the container and the filling channel, no difficulties arise more in terms of the surface quality or the wear and tear due to friction, since the cover is yes during the movements of the filling channel can extend or contract. This results in a considerable simplification in manufacture as well as great operational reliability. In addition, the liquid is no longer in the filling device with the air tion in contact, so that any risk of non-hygienic fermentation can be excluded.

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Further developing features and advantages ^^ S ^^ device are to be explained in more detail below with reference to execution and the drawings, the drawings show in

Pig. 1 is a schematic representation of a bottle filling machine;

Fig. 2 is a schematic representation in section of an innovation according to the invention . Filling mouthpiece with a tubular casing in the form of a bellows in the rest position;

FIG. 3 shows a schematic representation similar to FIG. 2 in the section of the filling mouthpiece at the end of the filling process of a bottle;

4 and 5 are schematic views on an enlarged scale to explain further embodiments of the shell in the form of bellows with rings for reinforcement are provided; and in

6 and 7 are partial views of details of the arrangement according to FIG

Fig. 5 to explain the position of a reinforcement ring in a bellows in the two states of Flattening and stretching.

In Fig. 1, a filling device or bottle filling machine can be seen, for which the innovations according to the invention. Can use device and which has a container C which is filled with a liquid L, for example a non-gashaltigeη or carbonated _/ so-called simple drink. This liquid is to be filled into bottles B, for example made of plastic material, which pass with the aid of a conveyor T and which can be lifted in groups using a lifting device E, these organs already being used

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are known and do not belong to the world. Bel yours in Pig.

Pallet the container “C yes six i

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pieces "which forcibly work together" when the ipeb ^ device E lifts the bottles 33, the container C _(is also connected to a line CL for supplying liquid and to a line CR for sucking in or regulating the pressure so that the liquid L can be placed under a slight negative pressure or, if necessary, under a slight overpressure.

(J In Figs. 2 and 3, one of the six filling mouthpieces is the one according to the invention Device reproduced. Such a filling mouthpiece is with a static arrangement consisting of the bottom of the container, a ventilation pipe with a pouring cannula and a guide sleeve, and a variable-length arrangement provided, which comprises the filling channel and the deformable shell.

1. Static arrangement

The bottom 1 of the container C, filled for example with a simple liquid L, belongs to the static arrangement its underside with a large circular opening

2 is provided with the axis X-X, under which the filling mouthpiece BS according to the invention is arranged coaxially. The horizontal tj lower wall of the container C is only partially shown in Figs

3 reproduced.

At the opening 2 and below it is a pouring cone 3 also attached with the X-X axis. The pouring cone 3 is surrounded by a collar 4a of a guide sleeve 4, which for example is attached to the bottom 1 of the container C with screws Ab.

In the opening 2, a centering ring 5 is attached to which a Pipe for escaping air or a vent pipe 6 from

much smaller diameter than the opening 2 is welded. The centering ring 5 lets the liquid L through the pouring

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cone 3 pass through a large annular cross-section. The upper end of the tube 6 opens into the container 1 above the level of the liquid L (see FIG. 1). His The lower end is connected to a pouring cannula 7. The pouring cannula 7 is penetrated radially by two ventilation openings 8 and 8a which are arranged one above the other and which are penetrated by two through the wall of the ventilation pipe 6 through holes are extended. Directly below the lower ventilation opening 8a carries the Pouring cannula 7 a sealing and stop ring 9 * of the one Valve seat for the lower branch 10 of a FUllkanales 11 described below forms. The pouring cannula 7 has a much smaller in diameter than the neck of a bottle B into which it is intended to penetrate. Outside is the guide sleeve 4 provided with a radial pipeline or a tubular connecting part 12 which opens into its cavity and which is connected to different, devices not shown can be connected, such as a source for a pressurized fluid, a vacuum or suction device or simply to the atmosphere.

2. Adjustable length arrangement

According to an essential feature of the invention, this arrangement is provided with a deformable shell 13 which is arranged coaxially to the axis X-X of the filling mouthpiece and which at reproduced embodiment made of an elastic tubular Bellows, for example made of an elastomeric material. The bellows forms the upper part of the filling channel 11 and is provided with an upper inner collar 14 which fits tightly in a circumferential groove of the small lower base of the pouring cone 3 is held, while an inner collar 15 is let into a circumferential throat of a main bushing 16, which is essentially the The lower part of the filling channel 11 forms. The collars 14 and 15 consist of areas that are relative to the other in terms of their thickness Thickness of the bellows 13 are reinforced and thus recessed and tight in the corresponding grooves of the cone 3 and the Bush 16 form matching beads.

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In this way, the tubular bellows 13 closes the fixed pouring cone 3 belonging to the static arrangement to the Lower part of the movable Gleßkanales 11, which belongs to the arrangement with adjustable length. The minimum diameter of the bellows 13, d. H. the diameter measured inside at the bottom of the circular gaps is at least the same as large as the inner diameter of the bush 16, which in turn is significantly larger than that of the vent pipe 6. the The outer diameter of the bush 16 is just as large or something smaller than the inner diameter of the tubular sleeve 4. /; \ The socket 16 is extended downwards by a pouring pipe 17, the inner diameter of which is somewhat smaller than that of the socket 16, but approximately as large as; the outer diameter of the Pouring cannula 7 is on which the socket 16 to form a Valve 18 can slide, with its lower part on the stop and sealing ring 9 that forms a seat comes to the plant and the ventilation openings 8 and 8a and a The pouring opening 19 in the pouring cannula 7 closes.

Between the main bushing 16 and the tube 17 is a circular one outer transition shoulder 20 arranged on the in tight contact with the pouring tube 17, a strong, tight-fitting sealing ring 21, preferably made of an elastomeric material

the
^! is glued, comes to rest against / the neck of a bottle B, which in the exemplary embodiment consists of a plastic material. In its lower region, the bush 16 has a tubular outer guide jacket 22 which extends upward from the shoulder 20 and which is displaceable on the outside of the guide sleeve 4. Between the upper part of the jacket 22 and a shoulder 23 arranged on the guide sleeve 4, a helical compression spring 24 is arranged, which is guided on the guide sleeve 4 surrounding it.

Furthermore, between the pouring cone 3, the guide sleeve 4 and the tubular bellows 13 and the bush 16 is an annular one Chamber 25 arranged, which essentially surrounds the bellows 13

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there and in which the radial tubular connector or Tube 12 opens.

It should be pointed out that the filling mouthpiece described above does not have a centering cone, which is usually the case in devices of this type is used, since the arrangement described above for filling bottles B from Plastic material is used. Should the arrangement described above are used to fill glass bottles, it is preferably provided with a centering cone for the bottle necks be equipped without otherwise changing anything in the device described above.

The device described above works as follows:

a) In the absence of a bottle (see Fig. 2), the variable length arrangement has its maximum length, the bushing 16 and the pouring pipe 17 being attached to the pouring cone 3 via the tubular bellows 13. the Openings 8, 8a and 19 of the pouring cannula 7 are closed by the pouring tube 17, which under the action of the compression spring 24 against that formed by the sealing set 9 Seat is pressed down.

b) The lifting of a bottle B under the filling mouthpiece BR into contact with the ring 21 pushes the socket 16 and the Pipe 17 upwards. Since the vent pipe 6 is fixed, the openings 8, 8a and 19 are exposed. The casting process begins through the opening 19. The filling process of the bottle B corresponds to the air contained in the bottle of the liquid L is driven out and escapes through the ventilation openings 8, 8a and the ventilation pipe 6.

c) When the filling level of bottle B reaches the upper vent 8, the remaining air in the bottle can no longer be used

escape. The in the space between the upper edge of the bottle neck, the underside of the sealing ring 21 and the

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Filling level in the bottle B, compressed air prevents a further increase in the liquid level due to its compression. The casting process stops.

The bellows 13 can thus assume two extreme positions, where it has its maximum length in the one (see Fig. 2) and taking up the total weight of the Bushing 16, the tube 17 and the jacket 22 is stretched, while it occupies its minimum length in the other (see Fig. 3) and by raising the various. Organs is compressed. Between these two positions there is complete tightness inside the tubular bellows 13 within the pressure range for which the Bellows is designed.

Furthermore, in the event of an excessively high internal pressure, by which the bellows 13 would be inflated, this can be relieved by connecting the tubular connecting part 12 to a pressure source. It is thus possible to build up a counterpressure in the annular chamber 25 to compensate for the internal pressure of the liquid L in the bellows 13. An internal pressure that is too high can arise if a neutral gas is used instead of air (CO ₂ »N ₂ ) with a slight overpressure in order to put the bottle under pre-pressure.

On the other hand, in the event of a negative pressure in the interior of the bellows 13, which can occur if there is seepage wants to avoid connecting the tubular connecting part 12 to a vacuum or suction source on the seal 21, to avoid compression of the bellows 13, what would prevent the liquid L from flowing. The chamber 25 which is under negative pressure then establishes equilibrium again.

The tubular connecting part 12 can also be left open to the atmosphere when the liquid L inside

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of the Palfbalges 13 under a pressure of about the order of magnitude the atmospheric pressure. The connector 12 then simply plays the role of a ventilation opening, which allows air to enter or escape the chamber 25 without causing it to slide the bush 16 or deformations of the bellows 13 opposes a resistance.

The connecting part 12 can also be closed when the sliding play between the bushing 16 and the guide sleeve 4 is sufficiently large to allow the air to enter the chamber 25 or to exit the chamber, and when the internal pressure is only slightly different from the atmospheric pressure.

As a result, the bellows 13 can due to the regulation of the pressure or the negative pressure in the annular chamber 25 surrounding the tubular bellows 13 by means of the tubular connector 12 with a minimum of resistance and thus under the best conditions for a long working life.

As can be seen from FIG. 4, according to a further embodiment, the tubular bellows 13 can be reinforced by rigid, outer rings 26 which are arranged in the outer cavities or depressions of the folds of the bellows. The rings 26 are preferably provided with a rounded inner surface, for example of a semicircular ring-shaped shape, in order to avoid damaging the wall of the bellows 13. The rounded inner surface 27 of the rings 26 is provided with a substantially larger diameter d ₁ than that / animal cavities of the folds of the bellows 13 in order to allow a considerable annular clearance.

In another embodiment (compare FIG. 5), the tubular bellows 13 can have rigid _/ inner rings 28

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be provided with worn outer surface 29, which can also be designed, for example, circular. The outer diameter d ¹ * * of these rings 28 is much smaller than the diameter d, the inner cavities of the folds of the bellows. Furthermore, it may be sufficient to use a single retaining ring, for example the ring 28, in order to avoid flattening or compression of the bellows 13 in the event of a very considerable negative pressure inside. The rings 26 and 28 can be made of stainless steel, for example.

The use of the rings 26 and 28 enables the connector 12 omit, although it is possible to these rings 26 and 28 at the same time with the connecting part 12 to use. FIGS. 6 and 7 show the behavior of the bellows 13 reinforced by an inner ring 28 Liquid L under negative pressure (see Fig. 6), the wall of the bellows 13 is stretched on the flanks of the folds, where the voltage t is indicated. The ring 28 serves as a support for the bellows, the inner cavity being the fold of the Bellows on the toroidal surface 29 of the ring 28 comes to rest.

If the liquid L is no longer under negative pressure (see FIG. 7), the bellows 13 becomes elastic its normal shape again. in the the inner cavity of the The crease has a larger diameter than the ring 28. In the absence of those acting on the flanks of the fold The ring 28 is placed under tension on the inner flank 28a of the fold.

Numbers at SiDi el

Without reinforcement rings 26 or 28, the bellows 13 flattens out a negative pressure of the liquid of 400 mm water column. The bellows resists with a reinforcement ring 26 or 28 without difficulty without flattening a negative pressure of

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1 500 mm water column. ^!

With the bellows 13, the required tightness in, _"r simple and complete manner is created, what the ^hygiene: ^ \ 'guaranteed ζ, avoids deformation of the bottle B and Vf, guarantees the quality of the liquid L. This tightness is obtained by the shape and thickness of the beads or bundles 14 and 15 and their edging in the corresponding grooves of the cone 3 or the main bushing 16.

With the bellows 13 it is achieved in an advantageous manner that the site stress exerted by a raised bottle remains low during the filling process, what the use of such a filling mouthpiece when filling bottles made of plastic material enables.

With the outer or inner reinforcement rings 26 and 28, respectively can be the resistance of the bellows to pressure or negative pressure with the same thickness and with the same elasticity of the Bellows are increased so that the operating time increases.

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Claims (10)

Protection claims 1. Device for the automatic filling of bottles at constant pressure with a liquid container and a vertical, tubular filling channel, which is connected to the The container is connected to the bottom and a lower r quite movable lower casting with a smaller cross-section than the neck of a bottle to be filled and a Has valve on its underside, in which a fixed ventilation pipe along the axis of the filling channel in its Inside is arranged and open at its lower end, which is provided with an opening for the entry of air penetrate the lower end into the interior of a bottle to be filled can, and in which the ventilation pipe delimits a valve seat against which the valve of the filling channel can be pressed and from which the valve can move away to form a pouring flow under the action of a displacement of the part forming the valve, dadu. ch in that the lower part of (11) of Füllkanales is (connected 11) deformable sheath (13) to the container (C) Full channel via a {..) tubular, in the axial direction (XX). 2. Device according to claim 1, characterized in that that the deformable shell is designed as a bellows (13). 3. Apparatus according to claim 1 or 2, characterized in that the deformable sheath (13) is elastic is formed and preferably consists of an elastomeric material. - 14 - 7626905 09.12.76 »Le 4. Apparatus according to claim 3> characterized in that that the ends of the bellows (13) inner collars (14, 15) that have corresponding grooves on the underside a pouring cone (3) below the pouring opening (2) of the container (1) or on the one opposite the valve End of the lower part (16, 17) of the Püllkanales (11) are fitted. 5. Device according to one or more of claims 2 to 4, characterized in that the bellows (13) Hl is reinforced with at least one solid ring (26, 28), which is arranged coaxially and with play in the cavity of the fold of the bellows (13). 6. Apparatus according to claim 5, characterized in that the itarre ring (26) is arranged outside the folding bellows (13) and has a larger inner diameter (d *) than the diameter (d ₂ ) of an outer cavity of the fold of the folding bellows (13) having. 7. Apparatus according to claim 5, characterized in that that the rigid ring (28) inside the bellows 0 (13), its outer diameter (d,) being smaller than the diameter (dr) of an inner cavity of the fold of the Bellows (13) is. 8. The device according to one or more of claims 5 to 7, characterized in that the bellows (13) facing surface (27, 29) of the rigid ring (26, 28) is rounded and preferably semicircular-ring-shaped Has shape. 9. Device according to one or more of claims 5 to 8, characterized in that the rigid Reinforcing ring (26, 28) is made of stainless steel. - 15 - 7626905 09.12.76 "* ■ * ft" ft -15- ^ 10. The device according to one or more of the preceding I claims, characterized in that f the sheath (13) is arranged within a coaxial tubular fixed guide sleeve (4) which is connected to the bottom (1) of the container (G) and which with the envelope (13) forms an annular chamber (25) which surrounds the bellows (13) and which can be connected to an external pressure source via a radial tubular connecting part (12) of the guide sleeve (4). ; 7626905 09.12.76