EP3630619B1 - Apparatus, system and method for compressing containers filled with bulk material - Google Patents

Description

The present invention relates to a compression device and a method, in particular for compressing containers filled with bulk goods, the compression device comprising a compression bottle received on a carrier device, which is intended to be immersed from above into a container that is open at the top and to suck air out of the contained bulk goods.

A wide variety of compression devices for compressing bulk goods filled in open containers have become known in the prior art. For example, devices and methods have become known in which vibrations are applied from below to the bottom end of the open container via a floor vibrator in order to degas and thus compress the bulk material present in the open container.

In addition, compression devices have become known in which a vacuum lance dips from above into the open top end of an open container and sucks air directly from the bulk material via a porous outer surface and thus contributes to the compression of the bulk material. Both known systems have advantages and disadvantages. It is therefore with the WO 2016/116427 A1 a device and a method for filling an open container become known, wherein a compression device is used with a compression bottle, wherein the Immerses the compression bottle in an open container from above. The compression bottle is immersed in the bulk material and sucks air out of the bulk material via its gas-permeable outer suction wall. At the same time, a vibration exciter is arranged inside the compression bottle, which generates a vibrating movement of the compression bottle and thus further increases the effectiveness of the compression. Other compression devices are in WO 2005/110849 A2 and WO 2007/101836 A1 described.

However, all compression units dipping into an open container from above, and in particular those compression units that suck air from the interior of the bulk material via vacuum, have the disadvantage that a relatively large amount of bulk material adheres to the outer surface of the compression unit when the compression unit is removed again . Since increasing importance is attached to the cleanliness of the environment, such compression devices have disadvantages which compression devices acting only from the outside do not have in principle.

It is therefore the object of the present invention to provide a compression device with which a higher level of cleanliness can be achieved.

This object is achieved by a compression device with the features of claim, a packing system with the features of claim 9 and by a method with the features of claim 12. Preferred developments of the invention are the subject matter of the subclaims. Further advantages and features of the present invention emerge from the general description and from the description of the exemplary embodiments.

A compression device according to the invention comprises a compression bottle received on a carrier device for compressing bulk material in an open container. The compression bottle comprises an outer wall that is at least partially gas-permeable and connected to a suction channel. The compression bottle is suitable and intended to be introduced into an open container around the compression bottle to bring into contact with the bulk material and to degas and compress the bulk material in the open container. The compression bottle has a longitudinal axis and is therefore pivotably received.

The compression device according to the invention has many advantages. A considerable advantage of the compression device according to the invention is that the compression bottle is received so as to be pivotable about its (in particular central) longitudinal axis. This makes it possible for the compression bottle to pivot around its longitudinal axis after compression has taken place, as a result of which bulk material particles adhering or sticking to the outer surface or wall of the compression bottle (due to internal friction in the bulk material) are loosened or stripped off. As a result, the proportion of bulk material that is transported to the outside when it is pulled out of the open container is considerably lower. The pollution of the environment is significantly reduced.

A compression bottle in the context of the present invention is understood to mean a device for compression with at least one body, the body having the shape of a bottle or a rod or a lance or a similar or comparable shape. In particular, a compression bottle in the context of the present invention can also be understood to mean a vacuum lance, a vacuum rod, a suction lance, a filter rod or a filter candle.

It is possible that the compression device comprises two, three, four or more compression bottles. One compression bottle or two or more compression bottles can be used, for. B. be arranged at a station of a plant or packing plant. It is possible that one compression bottle or two or more compression bottles are provided at several stations of a system or packing system. As a result, the compression bottles can be immersed and removed and operated at successively arranged stations in order to increase the overall compression.

A pivoting movement can be understood to mean a movement around a specific (and, for example, fixed) or an indefinite (and, for example, each resulting in operation) angular range. The swivel angle can be smaller than a full revolution (360 °), but can also be larger and even include several revolutions.

The term “pivotable” is understood to mean a rotational movement that is limited in the pivoting angle or also an unlimited rotational movement and also a continuous rotation of at least one compression bottle or also all compression bottles. It is also possible for at least one compression bottle to be pivotable only through a certain angular range and at least one other compression bottle to be continuously rotatable.

A pivoting movement preferably takes place at the beginning of the pivoting movement in a direction of rotation in which a thread, with which the compression bottle is screwed, for example, is tightened. This reliably prevents automatic loosening during operation. However, if the compression bottle is fastened in a form-fitting manner, for example, any desired direction of rotation can be selected at the start of the pivoting movement. Especially when the swivel movement is carried out back and forth several times in quick succession or with a higher frequency.

In particular, there is a pivoting movement of the compression bottle around itself. The compression bottle is in particular received on the carrier device such that it can pivot about its central axis of rotation. The pivoting is preferably carried out while the compression bottle is received in the open container. The outer wall of the compression bottle is formed at least in part by a gas-permeable outer suction wall. In particular, the compression bottle has at least one contact section which is intended to come into contact with the bulk material. In preferred refinements, the compression bottle is preferably symmetrical and in particular rotationally symmetrical on the contact section or on the contact sections and at least partially air-permeable.

The compression device according to the invention can be used in packing systems and packing machines of the most varied of types. It can be used for filling bulk goods in small and very small bags. However, it can also be used when filling bulk goods in bags of different sizes and, in particular, open bags. Use is also possible and preferred when filling bulk goods in so-called "Big Bags", so that bulk goods can be compacted in open containers with a capacity, for example, from a few 100 g to far more than 100 kg.

Bulk material can be compacted with the invention in any open container. It is also possible to use additional compression devices which act in the same or in a different manner on the bulk material in the container.

In a preferred development, a swivel device is provided, by means of which the compression bottle can be swiveled in a controlled manner, in particular by a control device. The pivoting device is in particular received on the carrier device. The pivoting device preferably comprises a cylinder drive and in particular enables it to pivot back and forth. The swivel angle is basically arbitrary and can reach and exceed 20 °, 30 °, 45 ° or 60 ° or 90 ° or even 180 ° or even 360 °.

In all of the configurations, it is particularly preferred that the longitudinal axis of the compression bottle is or runs within the cross section of the compression bottle. It is particularly preferred that the compression bottle and in particular at least the outer wall of the compression bottle is designed to be rotationally symmetrical. It is then particularly preferred that the longitudinal axis of the compression bottle is the axis of symmetry of the outer wall or of the compression bottle. This then means that the compression bottle is around her Axis of symmetry is pivotable. Then, if necessary, only a pure pivoting movement of the compression bottle takes place in the bulk material. With such a pivoting movement, bulk material on the outer surface of the outer wall of the compression bottle is particularly effectively removed. Adhering bulk material is practically sheared off from the outer surface by internal friction in the bulk material.

However, it is also possible that the axis of rotation does not completely coincide with the axis of symmetry of the compression bottle, so that, for example, there is a slight wobbling movement or a slightly eccentric rotational movement. An eccentric rotary movement can also bring the desired success, but a smaller eccentricity is preferred.

In all of the configurations, it is particularly preferred that the compression bottle is essentially tubular over at least a considerable longitudinal section. The compression bottle or the tube device of the compression bottle can consist, for example, of a lower tube unit and an upper tube unit or at least include one. The lower pipe unit and the upper pipe unit can be separated from each other at a separation point. In particular, the lower pipe unit at the point of separation can be exchanged in order to be able to replace the respective pipe unit if the lower pipe unit (upper pipe unit) is worn.

In all of the configurations, at least one ventilation valve is preferably provided in order to specifically apply ventilation or application of an air pulse or pressure surge to the filter device (from the inside). As a result, the filter device can be cleaned of adhering particles from the inside by means of a blast of air.

In preferred configurations it is possible for the upper tube unit to have a tight outer wall. In any case, the lower tube unit is partially provided with a suction wall on the outer wall in order to remove air from the bulk material into the Suck the compression bottle into it. A suction channel extends there, which is connected to a vacuum connection or a vacuum source in order to discharge the suctioned air.

In preferred embodiments, a lifting drive is provided. With the drive, lowering and raising of the compression bottle and / or the carrier device is possible. Particularly preferably, the carrier device is raised or lowered by the drive, whereby the compression bottle is also raised or lowered. As a result, the compression bottle can be lowered into an open container in order to compress the bulk material present there in the open container. After the compression has taken place, the compression bottle is lifted up again out of the open container via the drive.

In preferred embodiments, the outer wall consists at least partially of an air-permeable filter device. The air-permeable filter device is preferably supported interchangeably by a support device. It is possible that the outer wall and / or the filter device is or are exchangeable. The outer wall and / or the filter device are preferably supported by a support device. The outer wall and / or the filter device can be designed to be self-supporting.

The air-permeable filter device can consist of a single or multi-layer filter layer. For example, it is possible to use wire mesh (s) as a filter device. Other materials are also conceivable as filter materials, such as. B. sintered surfaces. The pores are particularly preferably smaller than the smallest particle size. In particular, the protective device provides a framework or a support body to which at least one filter layer is applied.

The vacuum connection is preferably connected to a flexible hose. The vacuum connection can be connected to the compression bottle in a rotationally fixed manner and when it is pivoted Swivel the compression bottle with it. It is also possible for the compression bottle to be rotatably received on, for example, a vacuum distributor. Then several compression bottles can draw their vacuum via a vacuum distributor.

In simple embodiments, the vacuum connection or the vacuum distributor is provided or connected centrally at the upper end of the compression bottle. Is possible z. B. the use of a rotary feedthrough or a flexible hose that can be twisted accordingly.

It is preferred that the compression bottle is elongated. A ratio of a length to a diameter of the compression bottle is preferably more than 3 or more than 5 or more than 10. In particular, the ratio of length to diameter can also be related to that part of the compression bottle that actively contributes to suction. For example, if the compression bottle essentially consists of a pipe device with a lower pipe unit and an upper pipe unit and is only sucked off at the lower pipe unit, the ratio of a length to a diameter can relate to the length and the diameter of the lower pipe unit. In all configurations, a slim compression bottle is preferred, with the larger the diameter, the larger the effective area.

If 2 or more compression bottles are used, 2 or more compression bottles can be accommodated on a common carrier device. Each compression bottle is preferably received so as to be pivotable about its respective longitudinal axis. The pivoting device can have a common drive for pivoting 2 or more compression bottles. It is possible that a common cylinder drive is used to pivot 2 or more compression bottles.

Furthermore, the invention is geared towards a packaging system that has an open container to be filled with bulk material and comprises at least one packing machine. The packing machine has at least one filler neck for filling open containers with bulk material. Furthermore, at least one compression device is provided, as described above. Such a compression device comprises, in particular, a compression bottle received on a carrier device for compressing bulk material in the open container. The compression bottle comprises an at least partially gas-permeable outer wall connected to a suction channel. The compression bottle is suitable for being introduced into an open container in order to bring the compression bottle into contact with the bulk material and to degas and compress the bulk material in the open container. The compression bottle has a longitudinal axis and is therefore accommodated in a pivotable manner. A packing system equipped in this way also has many advantages.

In a further development, a pressure sensor can be provided in order to determine the filling pressure within the bulk material. It is also possible and preferred for a fill level sensor to be provided in order to detect the fill level in the container. If the filling level exceeds a predetermined level, for example, the compression device or the compression bottle can dip into the container and cause compression of the filled bulk material. The compression time can be lengthened or shortened depending on the fill level.

The compression bottle is particularly adjustable in height and can be inserted through the filler neck into the container or used at a station where there is no filler neck. It is also possible for the compression bottle to be insertable into the container next to the filler neck.

The method according to the invention is used to compact bulk material in an open container. A compression bottle is at least partially inserted into the open container in order to degas and compress bulk material in the open container. The compression bottle is before and / or during the removal from the Container pivoted around its longitudinal axis. In particular, adhering bulk material is stripped off. In addition, the degassing of the bulk material can be promoted by pivoting the compression bottle. For example, clinging lumps or structures of the bulk material are broken up by the pivoting.

The method can also be used directly when filling an open container, in which case at least one bulk material is then filled into an open container during a filling process. A compression bottle of a compression device is inserted into the open container in order to degas and compress the bulk material in the open container. The compression bottle is pivoted about its longitudinal axis before and / or during removal from the container.

In all embodiments of the method, it is preferred that the compression bottle is introduced into an at least partially empty container. For example, it is possible for the compression bottle to be introduced into the container before the start of the filling process. It is also possible, however, for the compression bottle to be introduced into the partially or completely filled container only after the filling process or after a first step of the filling process.

The compression bottle is preferably pivoted several times. It is preferred that the compression bottle is pivoted in a pulsating manner. The compression bottle can also be swiveled continuously.

Air is preferably sucked out of the compression bottle while bulk material is poured into the container.

In preferred embodiments, the compression bottle is pivoted or rotated at least once about its longitudinal axis during the compression process. This is done in order to loosen adhering bulk material. Pivoting can also take place while bulk material is still being filled.

It is preferred that the compression bottle is pivoted at least once about its longitudinal axis after the vacuum supply has been switched off. After switching off the vacuum supply, loosening of bulk material particles on the outer surface of the outer wall of the compression bottle is facilitated.

In preferred further developments, air or compressed air is supplied to the compression bottle (inside) after the vacuum supply has been switched off. The air can be supplied, for example, through the suction channel. Such an air supply can take place at the end of the filling process or afterwards.

The compression bottle is preferably pivoted while air is supplied to the compression bottle. This further supports the loosening of bulk material particles on the outer surface of the outer wall. Or the loosened bulk material particles are kept at a distance from the air-permeable surface of the compression bottle so that they are not lifted when the compression bottle is pulled up by surface friction.

In all of the configurations it is preferred that air is supplied in the form of at least one air pulse. For example, at least one air pulse or one gas pulse can be supplied at certain times. The pulsed supply of air or other gas supports the detachment of bulk material particles even more.

An air pulse or a compressed air pulse (depending on the desired strength of the pulse) leads to an effective detachment of adhering particles. Several air pulses or compressed air pulses are also possible. It is also possible for air to be supplied permanently. At a certain point in time, the air supply can be increased with stronger air pulses.

The compression bottle is preferably pivoted while the compression bottle is pulled up out of the container. The compression bottle can be swiveled back and forth several times become. A multiple pivoting of the compression bottle is possible in all the cases and configurations described above. The effectiveness is increased by swiveling it multiple times.

In all of the configurations, it is preferred that air is only sucked off when a fill level of the bulk material in the container essentially completely covers the suction wall. This ensures that not too much ambient air is sucked in, which would reduce its effectiveness.

Overall, the compression bottle can also be referred to as a vacuum bottle or vacuum lance. The term “compression bottle” can be replaced by the term “vacuum bottle” or “vacuum lance” or by synonymous terms.

Overall, the compression device according to the invention has considerable advantages. Due to the rotation of the compression bottle, a shorter purging is made possible. It may also not be necessary to blow it free in order to remove adhering material from the outer surface of the compression bottle. In any case, the compressed air consumption is reduced because less or less air has to be supplied. This also reduces vacuum consumption.

Another advantage is that fewer air pulses for blowing out the outer surface of the compression bottle result in less unwanted air entering the product. Overall, the cleaning time is reduced.

The invention enables an increase in performance since the time required is reduced. The compression bottle can be freed from adhering particles more quickly. Overall, there is less caking on the outer surface that cannot be removed by blowing out. The product shears itself off.

A significant advantage is that when you pull out the Compression bottle less bulk material falls off, especially after the open container has already been removed from the filler neck. This results in a higher weight accuracy. Furthermore, the cleanliness increases.

In the case of a filling process, the compression bottle or vacuum lance can be present in the container or sack during the filling process or it is moved into the open container or the open sack after the filling process. The compression process is carried out by suction. Optionally, support can be provided by an externally acting compression device, for example by a vibrating table or the like. It is also possible to integrate an unbalance device into the compression device. In the case of strongly caked products, a single or periodic or multiple intermediate blowing is possible. Swiveling is also possible from time to time while vacuuming. The vacuum can be reduced or switched off for the individual pivoting process, or an air pulse is triggered to cause particles to be detached.

For purging, it is possible that the compression bottle is connected to the environment (or a positive pressure source) via a valve, whereby air at atmospheric pressure (or positive pressure) penetrates. It is also possible that a pressure surge is given. The compression bottle can be rotated or swiveled at the same time or at different times. In a preferred embodiment, it is rotated and blown free at the same time.

It is possible that it is continuously or periodically pivoted back and forth when it is pulled out. It is also possible that it is first swiveled back and forth and then the compression bottle is pulled out.

Further advantages and features of the present invention emerge from the exemplary embodiment which is explained below with reference to the accompanying figures.

Figur 1

eine schematische perspektivische Ansicht einer Packanlage;

Figur 2

eine Verdichtungseinrichtung der Packanlage aus Figur 1 in einer oberen Stellung;

Figur 3

die Verdichtungseinrichtung aus Figur 2 in einer unteren Stellung;

Figur 4

die Verdichtungseinrichtung aus Figur 3 in einem seitlichen Schnitt; und

Figur 5

eine schematische Ansicht einer weiteren Verdichtungseinrichtung.

In the figures show:

Figure 1

a schematic perspective view of a packing system;

Figure 2

a compression device of the packing system Figure 1 in an upper position;

Figure 3

the compression device off Figure 2 in a lower position;

Figure 4

the compression device off Figure 3 in a side cut; and

Figure 5

a schematic view of a further compression device.

Figure 1 shows the basic structure of a packing system 100 in a perspective overall view. The packing system 100 is used to fill bulk goods into open containers 4, in which case they are filled into sacks that are open at the top. The open containers 4 to be processed consist of a flexible material and in particular of a plastic material. Filling in paper containers is also possible. The packing system 100 comprises a packing machine 50 with a filling carousel 40. A sack source 70 provides the required containers 4 and an intermediate silo 80 is used for intermediate buffering of the bulk material to be filled.

A film roll 71, onto which a film web 72 is wound, is provided here as the sack source 70. The film web 72 wound up by the film roll 71 is fed to a forming shoulder 73. There, the film web 72 made of plastic film is guided around the shoulder and a longitudinal seam (in particular as a weld seam) is introduced, so that a continuous film tube is created.

At the transfer station 60, the bottom of the bag is produced by making suitable weld seams transversely to the longitudinal extension of the Tubular film are introduced. In addition, corner weld seams are preferably introduced in order to produce cuboid filled sacks. The tubular film held in the appropriate cross-section is conveyed further and brought into the receiving box 62 of the transfer station 60. There the open container 4 to be filled is received in a form-fitting manner. For the supply, the tubular film is cut to fit so that the open top end of the open container 4 is produced.

It is also possible to manufacture the open-topped container 4 from an already prefabricated and, for example, extruded film tube or also to supply completely prefabricated open containers 4 in the form of flexible sacks or bags or the like from a magazine or the like.

In Figure 1 the swivel arm 61 is shown in the swivel position 63 of the transfer station 60.

The device 100 has a base frame to which the filling carousel 40 and the other components are attached. The part 45 of the device is designed to be stationary, while the part 46 rotates during operation. Various treatment stations are provided at the individual filling stations, with the filling taking place in the coarse flow at one treatment station and the filling in the fine flow at a further treatment station 41. The filled bulk material is compacted at further treatment stations. A compression of the filled bulk material can be provided at each treatment station. A compression device 1 is used here at the treatment station 41.

The filling carousel 40 is operated clocked here. The required bulk material is fed from the intermediate silo 80.

If the compression achieved on the filling carousel 40 is not yet sufficient, a separate compression station can also be connected downstream, as described in the as yet unpublished German patent application with the application number 10 2017 109 873 is described.

Figure 2 FIG. 11 shows an enlarged perspective illustration of the compression device 1 from FIG Figure 1 which can be used at a wide variety of treatment stations.

The compression device 1 in any case comprises a carrier device 10 on which at least one (and here 2) compression bottles 2 are each held so as to be pivotable about their own longitudinal axis.

The compression device 1 is in Figure 2 shown in an almost completely raised upper position 35, in which the lower ends of the compression bottles 2 but still just protrude into the upper ends of the receiving box 30. When the receiving box 30 is clocked further, the compression device 1 is moved completely upwards.

The compression bottles 2 of the compression device 1 are each received separately pivotably on the carrier device. The pivoting device 15 with the cylinder drive 16 is used for joint pivoting about the respective longitudinal axes 8 of the compression bottles 2. The cylinder drive 16 pivots both compression bottles 2 back and forth. A coupling linkage 19 pivotally couples the compression bottles 2 to the cylinder drive 16. At the upper end of the compression bottles 2, these are rotatably received in the vacuum manifold 29, which is connected via a vacuum connection 27 and a flexible hose 28 to a schematically drawn vacuum source 9.

The lifting motor or lifting drive 25 of the lifting device 24 is used to adjust the height of the carrier device 10 and thus the pipe devices 20. The carrier device 10 can be designed as a console and is connected to the lifting device via the vacuum distributor 29.

The compression bottle 2 is essentially designed as a tube device 20 and comprises a lower tube unit 21 and a upper pipe unit 22. It is possible that only the lower pipe unit 21 is provided with a gas-permeable outer wall 5, which serves as a suction wall 7. The upper tube unit 22 can have a gas-impermeable outer wall 5. The lower tube unit 21 and the upper tube unit 22 are preferably of cylindrical design, at least over substantial sections.

The packing machine 50 is in Figure 2 A part of the stationary part 45 of the filling carousel 40 is also shown, namely here the vibrating table 47, which has two vibrating drives 48 which cause a vertical vibration movement of the vibrating table 47. The vibration movement is transmitted via the vibrating table 47 to the base plate or sliding plate 34, which is arranged so as to be vertically movable within the receiving box 30 shown here in section. In the receiving box 30, an open container 4 is shown here (also in section), the upper walls being reliably held open by the flaps 31 and 32 at the upper end. This ensures that when the compression bottles 2 are moved from above into the receiving box 30, the compression bottles 2 safely move into the interior of the container 4, which is open at the top, and do not, for example, grasp a wall of the container. The flaps 31 on the longitudinal side and 32 on the transverse sides of the receiving box are controlled via one or more flap drives 33 (such as, for example, pneumatic cylinders).

A broom-like or brush-like cleaning unit 37 can also be provided above the flaps 31 and 32 in order to sweep off the compression bottles emerging from the receiving box 30 on the outer surface in order to further improve the overall cleanliness.

Figure 3 shows the compression device 1 from Figure 2 , wherein the compression device 2 is shown in a lower position 36, in which the compression bottles 2 are immersed far into the receiving box 30 and thus into the container 4 open at the top.

The lower tube units 21 of the compression bottles 2 each have a gas-permeable filter device 11 on their outer surface and form a suction wall 7 through which air enters the lower tube unit 21 and the vacuum chamber 26 and into the suction channel 6 and is sucked upwards.

The separation point 23 on the compression bottles 2 is used to change the lower tube units 21, which are subject to greater wear, or the filter device 11 attached to them, which can clog or clog over the course of time, so that external cleaning or replacement is necessary.

Figure 4 finally shows a sectional transverse view of the compression device 1 from Figure 3 .

It can be clearly seen that the pivot axis or longitudinal axis 8 of the compression bottles 2 run within the cross section 17. Here, the longitudinal axes 8 each form the axes of symmetry of the pipe device 20 of the compression bottle 2. The lower pipe unit 21 has a length 13 which is many times greater than a diameter 14 of the lower pipe unit 21 or the compression bottle 2, since the lower pipe unit 21 is here and the upper tube unit 22 each have the same diameter. A ratio of the length 13 to the diameter 14 of the lower tube unit is greater than 3 and in particular greater than 5 and, in preferred configurations, can be greater than 10. A ratio of the total length of a compression bottle 2 to a diameter 14 of the compression bottle 2 is in particular even greater and can reach and exceed values of 5 or 10 or 20.

Here in Figure 4 a filling level 12 for the bulk material 3 is shown as an example.

Figure 5 shows a schematic cross section through a receiving box 30. An open bag is received as a container 4 therein. The container 4 is up to the level 12 with Bulk 3 filled. The upper edge of the film wall of the container 4 is held open by flaps 32. The compression device 1 is immersed in the bulk material. In the direction of the arrows 38, air is sucked out of the bulk material. A broom-like or brush-like cleaning unit 37 is provided above the flaps 31 and 32 and rests against the compression device 1 with bristles. When the compression bottle 2 emerges, its outer surface is swept away in order to further improve the overall cleanliness.

The air-permeable filter device 11 is preferably exchangeably supported by a support device 18 or is designed to be self-supporting. It is possible for the support device 18 itself to be part of the filter device 11. For example, the filter device 11 can have a plurality of filter layers, one or more of which form a support device 18.

If a compression bottle operated with a vacuum is cleaned by a blast of air, then - without the present invention - the filter device is not freed from adhering product uniformly at all points. Areas that are not so firm or sticky loosen faster. In the state of the art, the pressure pulse is reduced by the areas that have already been blown free, so that the remaining areas or pores are only cleaned inadequately or not at all. In the prior art, attempts are made to compensate for this by lengthening the blow-off time (length of the pressure pulse) or increasing the amount of air or the air pressure. This leads to a reduction in performance and an undesirable increase in air entry into the container. The invention already enables a mostly satisfactory stripping of the adhering bulk material through the rotary movement. In addition, the filter device can be blown free as far as possible with a short blast of air.

Overall, an advantageous compression device and an advantageous method for compressing bulk goods in open containers are made available, with a larger one Cleanliness of the facility is achieved. At the same time, faster filling and compacting can also take place, with the energy consumption also being able to be reduced. <b> List of reference symbols: </b> 1 Compaction device 29 Vacuum manifold 2 Compression bottle, vacuum lance 30th Reception box 31 flap 3 Bulk material 32 flap 4th Container 33 Damper drive 5 Outer wall 34 Sliding plate 6th Suction duct 35 upper position 7th Suction wall 36 lower position 8th Longitudinal axis 37 Cleaning unit 9 Vacuum source 38 arrow 10 Carrier device 40 Filling carousel 11 Filter device 41 Treatment station 12th Fill level 45 fixed part 13th Length of 2 46 moving part 14th Diameter of 2 47 Vibrating table 15th Swivel device 48 Vibration drive 16 Cylinder drive 49 frame 17th Cross section of 2 50 Packing machine 18th Support device 51 Filler neck 19th Coupling linkage 60 Transfer station 20th Pipe installation 61 Swivel arm 21 lower pipe unit 62 Reception box 22nd upper pipe unit 63 Swivel position 23 Separation point 70 Bag source 24 Lifting device 71 Foil roll 25th Lifting drive 72 Film web 26th Negative pressure room 73 Form shoulder 27 Vacuum connection 80 Intermediate silo 28 tube 100 Packing system

Claims (15)

1. Compacting device (1) comprising a poker compactor (2) received on a carrier device (10) for compacting bulk material (3) in an open package (4), wherein the poker compactor (2) comprises an outer wall (5) that is at least partially gas-permeable and is connected with a suction duct (6), and wherein the poker compactor (2) is suitable to be inserted into an open package (4) to cause the poker compactor (2) to come into contact with the bulk material (3) and to degas and compact the bulk material (3) in the open package (4), and wherein the poker compactor (2) shows a longitudinal axis (8),
   characterized in that the poker compactor (2) is pivotally received around the longitudinal axis (8).
2. The compacting device (1) according to claim 1, wherein a pivot device (15) is provided by means of which the poker compactor (2) can be pivoted, and wherein the pivot device (15) preferably comprises a cylinder drive (16), and wherein the pivot device (15) is in particular received on the carrier device (10).
3. The compacting device (1) according to any of the preceding claims, wherein the longitudinal axis (8) of the poker compactor (2) is disposed inside the cross section (17) of the poker compactor (2), and wherein the outer wall (5) of the poker compactor (2) and/or the poker compactor (2) is/are rotationally symmetrical.
4. The compacting device (1) according to any of the preceding claims, wherein a lifting drive (25) is provided, and/or wherein the poker compactor (2) comprises a bottom tube unit (21) and a top tube unit (22) exchangeably connected with one another in a separation point (23).
5. The compacting device (1) according to any of the preceding claims, wherein the outer wall (5) consists at least partially of an air-permeable filter device (11), and wherein the outer wall (5) and/or the filter device (11) is/are exchangeable.
6. The compacting device (1) according to any of the two preceding claims, wherein the outer wall (5) and/or the filter device (11) is/are supported by a supporting device (18), and/or wherein the outer wall (5) and/or the filter device (11) is/are self-supporting.
7. The compacting device (1) according to any of the preceding claims, wherein the suction duct (6) is connected with at least one vacuum connection (27) and/or a vacuum source (9).
8. The compacting device (1) according to any of the preceding claims, wherein the vacuum connection (27) is connected with a flexible hose (28), and/or wherein the vacuum connection (27) is non-rotatably connected with the poker compactor (2) and pivots along as the poker compactor (2) is pivoted.
9. Packaging system (100) comprising at least one open package (4) provided to be filled with bulk material (3), and at least one packaging machine (50) having at least one filling spout (51) for filling open packages (4) with bulk material (3), wherein at least one compacting device (1) according to any of the preceding claims is provided.
10. The packaging system according to the preceding claim, wherein the poker compactor (2) is height-adjustable.
11. The packaging system according to any of the two preceding claims, wherein the poker compactor can be inserted into the package (4) through the filling spout (51).
12. Method for compacting bulk material in an open package (4),
    wherein a poker compactor (2) is inserted into the open package (4) to degas and compact bulk material (3) in the open package (4),
    characterized in
    that the poker compactor (2) is pivoted about its longitudinal axis (8) prior to and/or during retraction out of the package.
13. The method according to the preceding claim, wherein the poker compactor (2) is inserted into an at least partially empty package (4), and wherein air is sucked out of the poker compactor (2) while bulk material (3) is being filled into the package (4), and wherein the poker compactor (2) is pivoted about its longitudinal axis (6) at least once during the compaction process.
14. The method according to any of the preceding claims, wherein the poker compactor (2) is pivoted about its longitudinal axis (6) at least once after the vacuum supply is cut off, and wherein air or compressed air is supplied to the poker compactor (2) after the vacuum supply is cut off, and wherein the poker compactor (2) is preferably pivoted while air is supplied to the poker compactor (2), and wherein the poker compactor is preferably pivoted while the poker compactor is being pulled upwardly out of the package.
15. The method according to any of the preceding claims, wherein the poker compactor enters a filled package, and/or wherein the poker compactor (2) pivots multiple times and/or intermittently and/or continuously.

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