Filling device

Abstract

A filling device (1) for a packaging machine (100) for filling bulk material (300) into a container (200) comprises a housing (2), a filling channel (3) formed in the housing, and a controllable channel shutter (4) for controlling the filling of bulk material into the container. The channel shutter (4) comprises at least one rotating closing element (6) which, in the installed state, is accommodated in a closing receptacle (5) in the housing (2), the closing receptacle (5) extending in the transverse direction (7) to the filling channel (3), through the filling channel (3) and at least partially through the housing (2). The closure part (6) comprises side walls (13, 14) and a closure element (15), the side walls (13, 14) in the closure receptacle (5) in the housing (2) being arranged outside the region of the filling channel (3), and the closure element (15) being arranged inside the closure receptacle (5) in the region of the filling channel (3). A circumferential seal (16) is arranged on the side wall (13, 14) for forming a seal between the side wall (13, 14) and the closed receptacle (5). Furthermore, a seal (19) is arranged on the closing element (15), perpendicular to the filling channel (3).

Description

Technical Field

[0001] The present invention relates to a filling device for a packaging machine, which is preferably used for automatically filling bulk materials into containers. The filling device includes at least one housing, at least one filling channel formed in the housing, and at least one controllable channel gate for controlling the filling of bulk materials into the containers. The channel gate includes at least one rotatable closing member, which is accommodated in a closing seat in the housing in the installed state, wherein the closing seat extends laterally to the filling channel, passes through the filling channel, and at least partially passes through the housing. A drive shaft is provided on the closing member, which extends outward from the drive side of the housing, and the closing member can be rotated in a controllable manner through the drive shaft so as to close the filling channel in the closed position and at least substantially completely release the filling channel in the open position at least in the central region. The closing member includes at least one side wall and at least one closing element, wherein the side wall in the closing seat in the housing is arranged outside the region of the filling channel, and wherein the closing element is at least partially arranged in the closing seat in the region of the filling channel. Background Art

[0002] In the prior art, various filling devices are known, which include filling channels and have at least one controllable channel gate for controlling the flow of bulk materials to be filled through the filling channels into valve bags.

[0003] In existing filling devices, in order to open the opening of the filling channel to different degrees, the channel gate usually moves to two or three different positions. If the channel gate is opened wide, the cross-sectional area of the filling channel will be greatly opened, and the filling will be carried out in a thick stream, thereby achieving a higher filling weight per unit time.

[0004] In order to be able to accurately control the filling amount or filling volume, the filling rate is reduced near the end of the filling operation, and then the filling is only carried out in a thin stream. For this purpose, the controllable channel gate significantly reduces the cross-sectional area of the filling channel. When the filling amount or the expected filling volume is reached, the channel gate is completely closed, thereby stopping the filling operation.

[0005] Such filling devices are known, for example, from DE 102011119624 A1 and DE 102016119191 A1. Summary of the Invention

[0006] The problem to be solved by the present invention is to develop a filling device with a channel gate in order to achieve better sealing, especially when filling fine or very fine bulk materials.

[0007] This problem is solved by a filling device having the features of claim 1. Further advantages and features of the present invention emerge from the general description and the description of the embodiments.

[0008] The filling device according to the invention is intended for use on or in a packaging machine and is used to automatically fill bulk material into containers, preferably. The filling device according to the invention includes at least one housing, at least one filling channel formed within the housing, and at least one controllable channel gate for controlling the filling of the bulk material into the container. The channel gate includes at least one swingable closing member that is received in a closing seat within the housing in the installed state, wherein the closing seat extends transversely to the filling channel, passes through the filling channel, and at least partially passes through the housing. At least one drive shaft is provided on the closing member, which extends outward from the drive side of the housing, and the closing member can be rotated by the drive shaft, particularly in a controlled manner, so as to close the filling channel in the closed position and at least substantially completely release the filling channel in the open position in at least the central region. The closing member includes at least one side wall and at least one closing element, wherein the side walls of the closing seat within the housing are arranged outside the area of the filling channel, while the closing element is at least partially arranged within the closing seat in the area of the filling channel. In addition, at least one circumferential seal is arranged on the side wall to form a seal between the side wall and the closing seat, and the closing element is provided with at least one seal transverse to the filling channel.

[0009] Preferably, at least one side wall, particularly a side wall on the shaft side, is provided on which the closing element is mounted. According to an embodiment, an embodiment of such an L-shaped closing member can be advantageously used in the area of the closing seat. However, according to an embodiment, side walls can also be provided on the left and right sides of the filling channel, and the closing element extends through the closing seat between the side walls.

[0010] Specifically, the closing seat has a circular cross-section that is arranged transversely to the filling channel, as described above. Thus, the corresponding adjustment embodiments of the side walls provide a rotatable channel gate, which can also be referred to as a so-called rotary valve.

[0011] The fact that the seal is arranged along the circumference particularly means that the circumferential seal is arranged on the circular side wall that surrounds the circumference and is adapted to the circular closing seat.

[0012] The seal is arranged around the circumference on the side wall, which particularly means that the seal can be arranged on the side wall and / or on the closing seat.

[0013] According to the invention, at least one seal extending transversely to the filling channel is arranged on the closing element. By means of such a seal extending transversely to the filling channel, better sealing can be achieved, and when the closing element rotates, the material can preferably be peeled off from the wall of the closing seat. At least one seal extending transversely to the filling channel is arranged on the closing element, specifically this means that the seal is arranged on the housing or the closing seat and / or on the closing element or is provided thereon.

[0014] The closing element may also preferably be in an intermediate position to reduce the free cross-sectional area of the filling channel. Thus, for example, rough flow filling can be carried out in the open position, and fine flow filling can be carried out in the intermediate position.

[0015] The filling device according to the present invention has many advantages. A significant advantage among them is that the material from the filling channel is not easily permeated through the filling channel between the closing seat and the closing member.

[0016] This is very advantageous for handling very fine or even the finest materials, because otherwise, depending on the design, during the rotation of the closing member, the material will inevitably flow outwards partially, which may pollute the environment, especially the shaft or bearing. Depending on the design, by providing a seal, this situation can be significantly improved or even avoided.

[0017] A wall of the housing preferably has an insertion opening for the closing member so that the closing member can be inserted into the closing seat through the insertion opening during installation. Since the disassembly and assembly of the closing member are relatively simple, this embodiment makes the assembly and maintenance of the filling device according to the present invention more convenient. It should be particularly noted that the insertion opening should be formed on the axial side wall of the housing.

[0018] It is particularly preferably provided with at least two side walls, each of which is provided with at least one circumferential seal to form a seal between the side wall and the closing seat. In particular, an axial side wall is provided, which is particularly guided inside the housing or the closing seat, and in particular, a relative side wall is also provided, which receives or is guided in a corresponding groove of the opposite housing wall or the closing seat in a suitable embodiment.

[0019] In a suitable embodiment, the seal arranged on the closing element at least extends across the entire cross-section of the filling channel.

[0020] In particular, the seal arranged on the closing element extends from the side seal or the seal inside or on the side wall to the seal on the other side wall. If only one seal is provided on the side wall, the seal of the closing element extends to this seal. The effect is that a closed seal is formed between the circumferential seal and the seal on the closing element extending transversely to the filling channel.

[0021] The seal arranged on the side wall is preferably integrally formed with the seal arranged on the closing element. In this way, a particularly effective and firm seal can be achieved. If two side walls are provided, the seal arranged on the side wall or the circumferential seal is preferably integrally formed with the seal of the closing element extending transversely thereto.

[0022] Preferably, at least one seal is contained in at least one groove of the housing or the closed receptacle. A plurality of seals or a single seal is particularly formed such that it at least partially protrudes above the groove.

[0023] In a suitable improvement, at least one seal is contained in at least one groove of the closing member. The groove or the integral groove is preferably provided on at least one side wall, or, if there are two side walls, on the side walls and / or on the closing element extending transversely thereabove. Here, the seal is also preferably designed to at least partially protrude above the groove.

[0024] The seal preferably comprises at least one flexible material. Specifically, the seal can be made of a flexible material. The flexible material particularly refers to a compressible, expandable and / or compactable material.

[0025] At least one seal is particularly preferably made of felt. The seal as a whole is preferably completely made of felt and / or at least partially made of felt. According to the embodiment, other suitable flexible sealing materials can also be used.

[0026] The present invention also relates to a filling device as described above, wherein at least one side wall comprises at least one discharging device to replace at least one circumferential seal on the side wall and / or in addition to the seal. If only one side wall is provided, especially on the axial side wall, at least one such discharging device is provided. If two side walls are provided, discharging devices are preferably provided on both side walls, wherein even if two side walls are provided, according to the design, the discharging device can also be used only on the axial side wall.

[0027] The advantage of such a discharging device is that it can replace the circumferential seal or be used in combination with the circumferential seal, thereby achieving an excellent sealing effect. In particular, it can achieve good sealing with the drive shaft or the bearing of the drive shaft.

[0028] In addition, particularly by using another seal, for example, using purified air to seal the bearing and the closing element, it can be achieved that when leakage occurs (for example, in the shaft seal ring), the purified air penetrating the closed receptacle cannot penetrate into the filling channel.

[0029] Starting from the filling channel, the discharging device is preferably provided downstream of the seal. Specifically, the discharging device is provided more outwardly or in the axial direction or in the direction of the free side. Since starting from the filling channel, the discharging device is located downstream of the seal, the remaining material reaching this area will still be discharged through the discharging device despite the presence of the seal.

[0030] The discharging device preferably includes at least one groove on at least one side wall. If two side walls are provided, such a discharging device or groove can only be provided on the axial side wall as described above. However, depending on the design, discharging devices with at least one groove can also be provided on both side walls respectively.

[0031] In a suitable improvement, the groove is circumferentially arranged. In this way, the material passing through the filling channel and the closed receptacle can pass through the entire circumference of the closed receptacle and be discharged into the circumferential grooves on a single side wall or multiple side walls.

[0032] Preferably, at least one outlet is arranged in the groove. This outlet is particularly arranged at the bottommost part or at least partially arranged in the lower region in the assembled state, so that the material is conveyed or passes downward through the groove by the rotation of the closing member (preferably by gravity) and can be discharged from the outlet passively and / or actively.

[0033] In a suitable embodiment, the discharging device includes at least one cleaning element. This cleaning element is particularly advantageous if there is a concern that the material in the groove of the discharging device will be compacted and block the groove over time. The cleaning element can keep the groove permanently unobstructed.

[0034] For this purpose, in a suitable embodiment, the cleaning element can be specifically designed as a scraper and / or spikes, which at least partially extend into the groove. Due to the rotation of the closing member or the side wall, and the resulting rotation of the groove, the scraper, spikes or the like preferably continuously scrape the groove. Description of the Drawings

[0035] Further advantages and features of the present invention emerge from the examples of the embodiments, which will be explained below with reference to the drawings.

[0036] In the figures:

[0037] Figure 1 A pure schematic diagram of the packaging system is shown in a plan view;

[0038] Figure 2 A pure schematic diagram of an embodiment of a filling module with a filling device according to the present invention is shown in a perspective view;

[0039] Figure 3 A pure schematic diagram of an embodiment of a filling module with a filling device according to the present invention is shown in a side sectional view;

[0040] Figure 4 Shows according to Figure 3 A pure schematic cross-sectional view of an embodiment of the filling module, where the closing element is in different positions;

[0041] Figure 5A pure schematic view of an embodiment of a filling device according to the present invention is shown in a cross-sectional view;

[0042] Figure 6 A pure schematic view of an embodiment of a filling device according to the present invention is shown in a perspective view;

[0043] Figure 7 A pure schematic view of a closing member of an embodiment of a filling device according to the present invention is shown;

[0044] Figure 8 It shows according to Figure 7 A pure schematic view of the closing member and the inserted seal thereof;

[0045] Figure 9 A pure schematic view of another embodiment of a filling device according to the present invention is shown in a cross-sectional view.

[0046] Reference numerals

[0047] 1 - Filling device; 2 - Housing; 3 - Filling channel; 4 - Channel gate; 5 - Closing seat; 6 - Closing member; 7 - Lateral direction; 8 - Drive shaft; 9 - Drive side; 10 - Closed position; 11 - Open position; 12 - Central region; 13 - Side wall; 14 - Side wall; 15 - Closing element; 16 - Seal; 17 - Wall; 18 - Insertion opening; 19 - Seal; 20 - Cross-section of the filling channel; 21 - Groove; 22 - Flexible material; 23 - Felt; 24 - Discharging device; 25 - Groove; 26 - Outlet; 27 - Cleaning element; 28 - Rotary valve; 29 - Driver; 30 - Bearing; 31 - Roller bearing; 32 - Spike / scraper; 33 - Shaft seal ring; 34 - Clean air duct; 100 - Packaging machine; 101 - Filling module; 102 - Filling box; 103 - Conveyor turbine; 104 - Conveyor; 105 - Filling nozzle; 200 - Packaging bag / container; 300 - Bag inserter; 400 - Bag removal system. Detailed description of the invention

[0048] Figure 1 A pure schematic view of a packaging system 100 for filling bulk materials into a container or a packaging bag 200 is shown in a plan view. The packaging system 100 is designed here as a rotary packaging system 100 with a plurality of filling modules 101, and each filling module is provided with a radially outward filling nozzle 105. Then, an empty packaging bag 200 can be loaded or pushed onto the filling nozzle 105 and filled during the rotation of the packaging system 100. In particular, so-called valve bags can be used here.

[0049] To automatically install or insert an empty packaging bag 200, an automatic bag inserter 300 is provided in the embodiment shown herein. The automatic bag inserter takes an empty packaging bag from the stack shown in the embodiment and places it into the chute passage, and installs it onto the empty filling nozzle 105 as the empty packaging bag passes through the chute passage.

[0050] During the rotation of the packaging machine 100, the bag 200 connected to the filling nozzle 105 is filled and conveyed to the bag removal system 400 after the packaging system 100 rotates.

[0051] Figure 2 The filling module 101 is shown purely schematically in perspective view. In the embodiment shown, the filling module includes a filling box 102, which has a conveying mechanism 104 designed as a conveying turbine 103 and a filling device 1 according to the present invention.

[0052] The filling device 1 includes a channel gate 4 for the filling channel 3 and a closing member 6. Wherein, in the embodiment shown, the channel gate 4 or the closing member 6 is formed as a so-called rotary valve 28. With the help of the closing member 6, the filling channel 3 can be opened or closed and / or narrowed at least in the central region 12 according to the position of the closing element 15 of the closing member 6.

[0053] In the embodiment shown herein, a drive 29 is provided for the rotation of the closing member 6 or the displacement of the closing element 15, and the drive is connected to or in active connection with the drive shaft 8 of the channel gate 4.

[0054] Figure 3 and Figure 4 An embodiment of the filling module 101 with a filling device 1 according to the present invention is shown purely schematically in a cross-sectional view. Here, the filling box 102 with the conveying turbine 103 can also be seen. Bulk material is conveyed to the filling channel 3 through the conveying turbine 103 and then to the filling nozzle 105 connected thereto, or, if the packaging bag 200 to be filled is connected to the nozzle, the filling nozzle can be connected to it.

[0055] As Figure 3 and Figure 4 As shown, the filling device 1 includes a housing 2, and the filling device 1 is arranged or accommodated in the filling box 102 through the housing 2. According to the embodiment, the filling device 1 can also be designed integrally with the filling box 102.

[0056] In the cross-sectional view shown, the closing element 15 of the closing member 6 can be seen, which is accommodated in the closing member seat 5 in the housing 2.

[0057] Figure 3In a purely schematic form, it is shown that the filling channel 3 is completely closed by the closing element 15, where the closing member 6 or the closing element is thus in the closed position 10.

[0058] Figure 4 It is shown that the channel gate 4 or the closing member 6 or the closing element 15 has been rotated to a state where the closing element 15 completely opens the filling channel 3. At this time, the closing member 6 is in the open position 11.

[0059] The effect is that when bulk material is filled into, for example, the bag 200 connected to the filling nozzle 105, a defined amount can be filled because after reaching the predetermined filling weight, the closing member 6 can be switched from the open position 11 to the closed position 10, so that no other material can enter the filling nozzle 105 or the bag 200 connected thereto through the filling channel 3.

[0060] According to a specific embodiment, the filling amount or the filling volume can also be controlled specifically. For this purpose, the filling rate is reduced near the end of the filling process, and then filling is only carried out in a thin stream. For this purpose, in a preferred embodiment, the cross-sectional area of the filling channel can also be significantly reduced at the middle position by a controllable channel gate. When the filling amount or the expected filling volume is reached, the channel gate is completely closed, thus stopping the filling operation.

[0061] Figure 5 The filling device 1 according to the present invention is shown in a purely schematic form in a lateral cross-sectional view. It can be seen from the figure that the filling device 1 includes a housing 2, and the housing 2 includes a filling channel 3 formed inside it, where a closing seat 5 for the channel gate 4 is provided in the housing 2.

[0062] The channel gate 4 includes a closing member 6, which in the embodiment shown here has two side walls 13, 14, and a closing element 15 is arranged between the two side walls. According to the embodiment, only one side wall 13 can also be provided, and this side wall together with the closing element forms an L-shaped assembly. This side wall 13 is the shaft side wall operatively connected to the drive shaft 8.

[0063] In the embodiment shown here, the contour of the closing seat 5 is adapted to that of the closing member 6 and is designed to be circular here. In the embodiment shown here, the closing seat 5 is designed to face the conveying direction of the filling channel 3 along the lateral direction 7 of the filling channel 3, so that the closing member 5 can be inserted or arranged in the housing 2 transversely to the conveying direction of the bulk material or transversely to the filling channel 3.

[0064] In the embodiment shown here, the closing member 6 is connected to the drive shaft 8 on the drive side 9, and the closing member 6 can be swung or rotated in the closing receptacle 5 by means of this drive shaft. Specifically, the closing member 6 can be swung or rotated between a closed position 10 and an open position 11, so that in the closed position 10, the filling channel 3 is substantially completely or even completely closed by the closing member 6 or the closing element 15. The closing element 15 is rotated to the open position 11, thereby opening the filling channel 3.

[0065] In order to prevent the material conveyed through the filling channel 3 from flowing along the housing 2 in the direction of the shaft 8 outwards, or even in the opposite direction, especially during the rotation of the closing member 6, a seal 16 is provided in the embodiment shown here, which is arranged in the groove 21 of the housing 2. The seal 16 is arranged around the circumference of the closing receptacle 5.

[0066] It can also be seen in the cross-sectional view that starting from the filling channel 3, after the seals 16 on the side walls 13, 14, grooves 25 (here circumferential grooves) are provided in the side walls 13, 14 respectively. In the embodiment shown, these grooves form the discharge device 24. According to the embodiment, the discharge device 24 can also be provided only on the side wall 13 close to the shaft side, or only on the opposite side wall 14.

[0067] Despite the seals 16, 19, the material reaching this area will still fall into these discharge devices 24 or grooves 25. Then, the material will fall down along the grooves 25. In the embodiment shown, there is an outlet 26, and then the material can be conveyed out of the housing 2 or dropped out through the outlet 26, and is preferably collected and discharged through a collecting funnel or the like.

[0068] If, as in the example of this embodiment, the drive shaft 8 is equipped with a so-called purge seal with a purge air duct 34, a discharge device can also be provided on the side wall 13 on the shaft side to dissipate the purge air that has penetrated into the housing 2 or the closing receptacle 5, for example, in the case of a leak in the shaft seal ring 33. Thus, the penetrated purge air will not enter the filling channel 3. This can prevent the conveyed material from being uncontrollably air-rich, thereby changing the flow characteristics of the material, especially prolonging the exhaust time of the packaging bag before it is removed from the filling nozzle.

[0069] Figure 6 The perspective view of the filling device 1 according to the present invention is only shown schematically. For the sake of easy observation of the interior of the housing 2, a part of the housing 2 in which the closing member 6 has been inserted into the closing receptacle 5 is not shown in the figure.

[0070] It can also be seen therefrom that seals 16, 19 are provided in the recess 21 and are arranged around the circumferences of the side walls 13, 14. In addition, it can also be seen that the seal 19 is also transversely arranged therein by the closing member 15 and extends at least over the cross-section 20 of the filling channel 3. However, here it extends from one seal 16 of the side wall 13 to another seal 16 of the opposite side wall 14. In the illustrated embodiment, the seals 16, 19 are configured as a one-piece member.

[0071] The seals 16, 19 are made here of a flexible material 22, which is provided as felt in order to achieve optimal sealing of the seals 16, 19 and to have yieldability.

[0072] Figure 7 and Figure 8 A further alternative embodiment of the closing member 6 according to the invention is shown purely schematically. Different from the above embodiment, the seals 16, 19 are not arranged in the recesses 21 of the housing 2, but are respectively inserted into the recesses 21 of the side walls 13, 14 and the closing element 15. The closing member 6 is then inserted together with the seals 16, 19 into the closing receptacle 5.

[0073] Figure 9 Another embodiment of the channel gate 4 according to the invention is shown. Compared with the foregoing embodiment, the housing 2 is not directly connected to the bearing 30 of the drive shaft 8. Therefore, although there are seals 16 and 19, the material overflowing from the filling channel cannot actually reach the roller bearing 31 of the drive shaft 8 and thus will not cause damage to it.

[0074] In addition, Figure 9 it is also shown that in all embodiments, the discharge device 24 may comprise at least one cleaning element 27 in the form of a spike 32 or a scraper 32.

[0075] The cleaning element can be arranged arbitrarily along the recess 25 and engages in the recess 25 to remove stubborn material. This is particularly advantageous when the material is full, because the material may be compacted in the recess and thus block the recess 25 over time.

Claims

1. A filling device (1) of a packaging machine (100) for filling bulk material (300) into a container (200), comprising at least one housing (2), at least one filling channel (3) formed within the housing (2), and at least one controllable channel gate (4) for controlling the filling of the bulk material into the container. wherein, The channel gate (4) includes at least one swingable closing member (6), which is received in a closing seat (5) within the housing (2) in the installed state, wherein the closing seat (5) extends in the transverse direction (7) of the filling channel (3) across the filling channel (3) and at least partially through the housing (2). Wherein, the closing member (6) is provided with a drive shaft (8), the drive shaft extends out of the housing (2) on the drive side (9) of the housing (2), and the closing member (6) can swing through the drive shaft so as to close the filling channel (3) in the closed position (10) and at least substantially fully open the filling channel (3) in the open position (11) at least in the central region (12). Wherein, the closing member (6) includes at least one side wall (13, 14) and at least one closing element (15), wherein the side walls (13, 14) in the closing seat (5) in the housing (2) are arranged outside the area of the filling channel (3), and the closing element (15) is arranged on the inner side of the closing seat (5) within the area of the filling channel (3). It is characterized in that At least one circumferential seal (16) is provided in the side walls (13, 14) to form a seal between the side walls (13, 14) and the closing seat (5), and at least one seal (19) transverse to the filling channel (3) is provided for the closing element (15).

2. The filling device (1) according to claim 1, wherein, A wall (17) of the housing (2) has an insertion opening (18) for the closing member (6) so that the closing member (6) can be inserted into the closing seat (5) through the insertion opening (18) during the assembly process.

3. The filling device (1) according to any one of the preceding claims, wherein at least two side walls (13, 14) are provided, and each side wall (13, 14) is provided with at least one circumferential seal (16) to form a seal between the side wall (13, 14) and the closed seat (5).

4. The filling device (1) according to the preceding claims, wherein the seal (19) provided on the closing element (15) extends at least over the entire cross-section (20) of the filling channel (3).

5. The filling device (1) according to any one of the preceding two claims, wherein the seal (16) provided on the side wall (13, 14) and the seal (19) provided on the closing element (15) are formed as an integral part.

6. The filling device (1) according to any one of the preceding claims, wherein at least one seal (16, 19) is provided in at least one groove (21) of the housing (2).

7. The filling device (1) according to any one of the preceding claims, wherein at least one seal (16, 19) is provided in at least one groove (21) of the closing member (6).

8. The filling device (1) according to any one of the preceding claims, wherein at least one seal (16, 19) comprises at least one flexible material (22).

9. The filling device (1) according to any one of the preceding claims, wherein at least one seal (16, 19) is made of felt (23).

10. The filling device (1) according to the preceding part of claim 1 or according to any one of the preceding claims, wherein, At least one of the side walls (13, 14) includes at least one discharging device (24).

11. The filling device (1) according to the preceding claims, wherein, Starting from the filling channel (3), the discharging device (24) is arranged downstream of the seals (16, 19).

12. The filling device (1) according to any one of the preceding two claims, wherein, The discharging device (24) includes at least one groove (25) located in the side walls (13, 14).

13. The filling device (1) according to the preceding claim, wherein the groove (25) is provided around the circumference.

14. The filling device (1) according to any one of the preceding two claims, wherein, The groove (25) is provided with at least one outlet (26).

15. The filling device (1) according to any one of claims 11 to 15, wherein, The discharging device (24) includes at least one cleaning element (27).

16. The filling device (1) according to the preceding claim, wherein the groove (25) is provided with a cleaning element (27).

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