DE202021104614U1 - Device for blowing off containers with soundproofing - Google Patents

Abstract

Device (1) for treating and in particular drying containers, with a transport device (2) which transports the containers through a blow-off area (4), at least one blow-off device (42) being arranged in this blow-off area (4), which discharges the containers with a gaseous medium, the blow-off area being arranged within a housing (8) which at least partially surrounds this blow-off area, with a feed opening through which the containers are fed to the blow-off area and a discharge opening through which the containers are guided out of the blow-off area again and with a sound reduction device (6) which reduces the sound occurring inside the blow-off area, characterized in that the sound reduction device has at least one sound insulation wall (60) formed inside the housing, this sound insulation wall having a first flat layer of foam Noise protection element (62) and a noise protection body (64) arranged adjacent to this first noise protection element (62), one surface of this noise protection body (64) facing the containers.

Description

The present invention relates to a device for treating containers. A wide variety of devices for treating containers are known from the prior art, such as blow molding machines, filling machines, machines for drying containers and the like. The present invention is described with reference to a device for drying or blowing off containers. It should be noted, however, that the present invention is applicable to other devices, particularly those that generate significant noise during a treatment process.

It is known in the prior art that noise protection tunnels are located in the inlet and outlet of a container blow-off device in order to reduce noise emissions. These tunnels can be opened on both sides with a twist lock for cleaning. There are plastic slats on the corresponding doors, which break up the sound and reduce the sound level.

These plastic lamellae or plates do not absorb the sound, but only break up the sound waves. Absorbing noise insulation mats, such as those made of PUR foam, cannot be used directly in this area because the blowing off of wet containers and the resulting turbulence will spread moisture throughout the housing and tunnel. This would lead to mold growth on the non-washable mats.

The sound-absorbing plastic panels provide a smooth and cleanable surface, but the reduction in noise emissions is limited. Porous surfaces such as those of the foam panels can therefore not be used with significantly higher noise reduction for hygienic reasons.

In addition, it would be conceivable to use PUR foam panels, which are equipped with a water-repellent fleece. However, this procedure has not fully proven its worth either, since there are surfaces that cannot be cleaned.

The present invention is therefore based on the object of providing sound insulation for such devices which can also be used in the humid environments described here. According to the invention, this object is achieved by the subject matter of the independent claim. Advantageous embodiments and developments are the subject of the dependent claims.

A device according to the invention for treating and in particular drying containers has a transport device which transports the containers through a blow-off area, with at least one discharge device being arranged in this blow-off area and subjecting the containers to a gaseous medium. Furthermore, the blow-off area is arranged within a housing which at least partially surrounds this blow-off area. Furthermore, a feed opening is provided, via which the containers are fed to the blow-off area, and a discharge opening, via which the containers are removed from the blow-off area again. Furthermore, a sound reduction device is provided, which reduces or diminishes the sound occurring inside the vent area.

According to the invention, the sound reduction device has at least one sound insulation wall formed within the housing, with this sound insulation wall having a first flat noise protection element having a foam material, and a noise protection body arranged adjacent to this first noise protection element, with one surface of this noise protection body facing the containers.

A noise reduction device is therefore understood to be a device which reduces the noise penetrating outwards from the blow-off area. This can take place in that the sound is at least partially absorbed by the sound reduction device, but multiple reflections of sound within the blow-off area would also be conceivable.

The noise protection body and the noise protection element are preferably components of this noise reduction device.

The invention thus proposes that this noise reduction device is constructed in at least two parts and contains the noise protection element on the one hand and the noise protection body on the other. Advantageously, both the noise protection element and the noise protection body have at least partially flat surfaces.

The transport device is preferably suitable and intended for transporting the containers in one row and/or in one lane. It is possible for the containers to be transported touching one another or, preferably, individually. The transport device can have holding devices for holding the containers. It would also be possible for the transport device to Has conveyor belt on which the containers (especially standing) are transported.

In a further advantageous embodiment, the transport device is suitable and intended for transporting the containers at a transport speed that is greater than 0.2 m/s, preferably greater than 0.3 m/s, and/or less than 3.0 m/s .

In a further preferred embodiment, at least one element or device of the sound reduction device, in particular the noise protection body and/or the noise protection element, can be cleaned with heated water or with hot water.

The noise protection element is preferably arranged with respect to the noise protection body in such a way that the noise protection body (or at least one surface of the noise protection body) faces the containers (in particular directly). In other words, the noise protection body is preferably arranged between the noise protection element and the containers to be blown off. The housing preferably forms a noise protection tunnel through which the containers are transported. In a preferred embodiment, additional soundproofing elements are provided at the feed and discharge openings.

In a further preferred embodiment, the feed opening and/or the discharge opening can be adapted to a shape or shape of the containers. For example, the feed opening and/or the discharge opening can be formed in an exchangeable wall element. By exchanging this wall element, it is possible to adapt to different container geometries. This can also contribute to noise reduction.

It would also be possible for only one wall element to be provided with a feed opening or discharge opening and for this to have displaceable elements with which the size and/or shape of the feed opening or discharge opening can be changed.

The noise protection body preferably also acts as a splash protection body, which is suitable and intended for keeping liquid originating from the containers away from the noise protection element.

In a preferred embodiment, the transport device has a conveyor belt which transports the containers. The transport device preferably transports the containers in an upright position. However, it would also be possible for the transport device to have gripping devices which grip the containers to be blown off. The transport device is preferably suitable for this and determines the containers to be transported along a straight transport path.

In a further preferred embodiment, the housing surrounds the blow-off area essentially completely and particularly preferably completely.

At least the noise protection element and/or the noise protection body is advantageously arranged on a carrier. The noise protection element and the noise protection body are preferably arranged on the same carrier. It is possible for this carrier to have a wall which bears against the noise protection element and in particular bears flat. In a preferred embodiment, this carrier has a receiving area, in particular a receiving area designed in the manner of a trough, which receives the noise protection element. The noise protection element can also be protected from liquids by this receiving area and/or the carrier.

The sound-insulating wall is preferably arranged or fastened to a door or, in general, to a movable wall that enables the housing to be opened.

In a preferred embodiment, the noise protection body has a large number of openings. This can be, for example, slit-like openings. Particularly preferably, these openings are evenly distributed over at least a section of the surface of the noise protection body. The openings are particularly preferably through openings, ie. H. Openings ranging from one surface of the noise barrier to the other surface of the noise barrier. It is possible, for example, for a large number of openings to be arranged in a row or along a line. These openings cause sound to pass through and ultimately, as will be described in detail, to attenuate the sound.

Overall, to reduce the noise emission, a noise protection package is attached to an area of the housing, in particular on the inside of the tunnel, for example on the doors and a cover, which package preferably also has a housing. This noise protection package or the noise reduction device has an internal noise insulation mat (i.e. the noise protection element mentioned above) and the slotted area or the area with openings described here (i.e. the noise protection body mentioned).

In a particularly preferred embodiment, the openings are micro-apertures and in particular micro-slits. As mentioned, these are preferably distributed regularly. A slit-shaped opening is understood to mean an opening that extends significantly further in a specific main extension direction than in a direction perpendicular thereto.

In a further advantageous embodiment, these micro-openings have a triangular shape and in particular the shape of isosceles triangles. In this way, a particularly preferred reduction in noise can be achieved.

In a further advantageous embodiment, the noise protection body is designed as a metal sheet with a predetermined, and in particular predetermined, uniform thickness. For example, the noise protection body can be an aluminum sheet or a steel sheet.

Said thickness is preferably greater than 0.2 mm, preferably greater than 0.3 mm and particularly preferably greater than 0.4 mm. In a further preferred embodiment, this thickness is preferably less than 2.5 mm, preferably less than 2.0 mm, preferably less than 1.5 mm, preferably less than 1.00 mm and particularly preferably less than 0.8 mm.

In a further advantageous embodiment, the noise protection element and the noise protection body are spaced apart from one another at least in sections. It is possible that there is a certain minimum distance between the noise protection body and the noise protection element, but this distance changes at least in one direction. Advantageously, this spacing creates a cavity in which sound is additionally absorbed.

In a preferred embodiment, the noise protection element is a mat and/or the noise protection element has a PUR foam or consists of a PUR foam.

Particularly preferably, at least one surface of the noise protection element and in particular a surface that extends in the longitudinal direction and in the width direction of the noise protection element is flat. At least two surfaces of the foam element are preferably flat.

Particularly preferably, the noise protection element has a thickness (a thickness extending in a thickness direction, the thickness direction being perpendicular to the longitudinal and to the width direction) that is greater than 3 mm, preferably greater than 5 mm, preferably greater than 10 mm and more preferably greater than 12 mm.

The thickness is particularly preferably less than 150 mm, preferably less than 100 mm and particularly preferably less than 80 mm.

It is therefore proposed that said noise insulation mat is designed in such a way that it absorbs sound waves. With a maximum fan frequency of 200 Hz, noise emissions are reduced by 3 dbA. The noise protection body or the micro-slotted sheet metal can be easily cleaned by opening the doors on the noise protection tunnel.

The internal noise insulation mat, i.e. the noise protection element, is protected from water, product residues and cleaning agents by the housing on the one hand and the noise protection body on the other. If required, it is possible for the noise protection body to be removed by opening fastening elements such as knurled screws, for example during the cleaning interval, and cleaned separately in a washing machine.

In a particularly preferred embodiment, the noise protection body can therefore be removed from the noise protection element. This can be done, for example, with the knurled screws mentioned. The noise protection body is particularly preferably separable from the housing and can therefore be treated separately, for example cleaned or washed.

In a further preferred embodiment, the noise protection element can also be removed. In this way, the noise protection mat or the noise protection element can be replaced by another noise protection element or can also be cleaned.

The noise protection body preferably has changing and, in particular, periodically changing distances from the noise protection element. These distances are preferably achieved in that the noise protection body itself is designed, for example, in a zigzag shape or generally with a periodic extension in a predetermined direction.

In a preferred embodiment, the noise protection body (in at least one direction and preferably in exactly one direction) has a zigzag shape. The individual surface sections of the noise protection body can each be flat, with such a section having an opposite sem section angled further (but preferably also flat) section connects.

In a further preferred embodiment, the device has a plurality of the soundproofing walls described here. For example, several doors, a ceiling or the floor can be equipped with such sound insulation walls.

In a further advantageous embodiment, the noise reduction device has a support wall on which the noise protection element and the noise protection body are arranged. Overall, the sound reduction device is therefore preferably composed of the support wall or a support housing, as well as the noise protection element and the noise protection body.

In a further advantageous embodiment, the noise protection body or the noise protection element is a fabric and in particular a calendered fabric.

In a preferred embodiment, the openings in the noise protection bodies are designed in such a way that a direction of passage through the noise protection body perpendicular to the plane of the noise protection body is blocked. A passage through the noise protection body is advantageously possible in a straight direction, which encloses an angle of at least 20°, preferably at least 40° and preferably at least 60° with a direction perpendicular to the plane.

In this way, on the one hand, noise can be reduced and, on the other hand, however, a direct passage of liquid is at least made more difficult. The noise protection body is preferably a micro-slit sheet metal (semi-finished product). This micro-slotted sheet metal can be easily cleaned by opening doors on the noise protection duct. The internal noise insulation mat (i.e. the noise protection element) can be protected from water, product residues and cleaning agents by the housing and the micro-slotted sheet metal.

The noise protection body is preferably a slotted and in particular micro-slotted metal sheet made of (especially stainless) steel, for example V2A or V4A or other non-rusting and preferably food-safe sheet metal.

• Darin zeigen:
  • 1 eine schematische Darstellung einer Vorrichtung nach dem Stand der Technik;
  • 2 eine Detailansicht der in 1 gezeigten Vorrichtung;
  • 3 eine Innenansicht der in 1 gezeigten Vorrichtung;
  • 4 eine schematische Ansicht einer erfindungsgemäßen Vorrichtung;
  • 5 eine Innenansicht einer erfindungsgemäßen Vorrichtung;
  • 6 eine Darstellung einer Schallreduziereinrichtung;
  • 7 eine Detailansicht der in 6 gezeigten Schallreduziereinrichtung;
  • 8 eine Schnittansicht einer erfindungsgemäßen Schallreduziereinrichtung;
  • 9 eine Schnittansicht einer Schallreduziereinrichtung in einer weiteren Ausführungsform;
  • 10 eine Ansicht auf eine erfindungsgemäße Vorrichtung.
  • 1 zeigt eine Darstellung einer Vorrichtung 100 zum Behandeln von Behältnissen nach dem Stand der Technik. Diese weist ein Gehäuse 108 auf, innerhalb dessen eine Abblasung für Behältnisse angeordnet ist. Das Bezugszeichen 2 kennzeichnet eine Transporteinrichtung, welche die Behältnisse durch das Gehäuse und damit zur Abblasung transportiert. Die Bezugszeichen 14 und 16 kennzeichnen Schallisolationseinrichtungen, welche an den Ein- und Ausgängen des Gehäuses 108 angeordnet sind.
  • 2 zeigt eine Detaildarstellung einer der Schallisolationseinrichtungen nach dem Stand der Technik. Dabei bezieht sich das Bezugszeichen 16a auf eine Öffnung, über welche Behältnisse ausgeführt werden können.
  • 3 zeigt eine Innenansicht der Schallisolationseinrichtung aus 2 nach dem Stand der Technik. Dabei erkennt man, dass im Inneren des Gehäuses mehrere Platten 18 angeordnet sind, welche ein Brechen von Schallwellen bewirken und damit auch eine gewisse Isolation.
  • 4 zeigt eine Darstellung einer erfindungsgemäßen Vorrichtung. Dabei bezieht sich das Bezugszeichen 8 auf ein Gehäuse. Innerhalb des Gehäuses ist eine mit 6 bezeichnete Schallreduziereinrichtung angeordnet. Diese weist die Vielzahl von Schallisolierungswandungen 60 auf (wobei hier eine Schallisolierungswandung an einer Seitenwand und einer an der Decke gezeigt ist. Das Bezugszeichen 64 kennzeichnet einen Lärmschutzkörper, der Bestandteil dieser Schallisolierungswandung ist. Dieser verläuft hier zickzackartig in der Transportrichtung der Behältnisse.
  • 5 zeigt einen Innenraum des Gehäuses 8. Dabei ist auch wiederum der Lärmschutzkörper 64 dargestellt, der wie hier erkennbar sowohl einen Seitenwänden als auch an der Decke eine gezackte bzw. zickzackartige Strukturen aufweist.
  • 6 zeigt eine Schallreduziereinrichtung bzw. Schallreduziereinrichtung 6, die an einem Wandungselement wie einer Tür 32 angeordnet ist. Daneben ist hier auch ein Gehäuse bzw. ein Rahmen 66 erkennbar, an dem die Schallreduziereinrichtung 6 angeordnet ist. Der Lärmschutzkörper 64 weist bevorzugt eine Vielzahl von (nicht gezeigten) Öffnung auf, welche sich von der in der Figur dargestellten Oberfläche des Schallschutzkörpers 64 zu der gegenüberliegenden Oberfläche erstrecken. Der mikroperforierte Lärmschutzkörper ist - bevorzugt mittels Rändelschrauben - mit der Tür verbunden und lässt sich zu Reinigungszwecken werkzeuglos demontieren.
  • 7 zeigt eine Darstellung der Schallreduziereinrichtung 6. Dabei ist wiederum der Rahmen bzw. das Gehäuse 66 gezeigt. Der Lärmschutzkörper 64 ist mittels Befestigungseinrichtung in, wie hier Rändelschrauben 15 lösbar an dem Rahmen bzw. Gehäuse 66 befestigt. Auf diese Weise kann der Lärmschutzkörper 64 entfernt und beispielsweise separat gereinigt werden.
  • 8 zeigt eine Seitenansicht einer Schallreduziereinrichtung. Diese weist hier den Lärmschutzkörper 64 (mikroperforiertes Blech) auf, sowie ein Lärmschutzelement 62, bei dem es sich, wie oben erwähnt beispielsweise um eine PUR Matte handeln kann. Zwischen dem Lärmschutzkörper 64 und dem Lärmschutzelement 62 ist ein Zwischenraum Z ausgebildet, der weiter zur Schallreduzierung dient. Sowohl der Lärmschutzkörper 64, also auch das Lärmschutzelement 62 sind an dem Gehäuse bzw. Rahmen 66 angeordnet.
  • 9 zeigt eine Darstellung einer weiteren Ausführungsform einer Schallreduziereinrichtung. Bei dieser Ausgestaltung sind zwei Lärmschutzkörper 64 und 64a vorgesehen, welche hier parallel zueinander angeordnet sind und zwischen sich einen weiteren Zwischenraum ausbilden. Bevorzugt verläuft dieser Zwischenraum ebenfalls zickzackartig.
  • 10 zeigt eine schematische Darstellung einer erfindungsgemäßen Vorrichtung. Daneben ist schematisch eine Beaufschlagungseinrichtung bzw. Abblaseinrichtung 4 dargestellt, welche die Behältnisse abbläst. Auch sind hier wieder die beiden (zusätzlichen) Lärmschutzeinrichtungen 14 und 16 dargestellt. Man erkennt, dass die Vorrichtung eine Vielzahl von schwenkbaren Türen aufweist, was jeweils durch die gestrichelten Linien S dargestellt ist. An diesen Türen sind bevorzugt jeweils Lärmschutzeinrichtungen bzw. die Schallisolierungswandungen angeordnet.

Further advantages and embodiments result from the attached drawings:

• Show in it:
  • 1 a schematic representation of a device according to the prior art;
  • 2 a detailed view of the in 1 device shown;
  • 3 an interior view of the in 1 device shown;
  • 4 a schematic view of a device according to the invention;
  • 5 an interior view of a device according to the invention;
  • 6 a representation of a noise reduction device;
  • 7 a detailed view of the in 6 shown noise reduction device;
  • 8th a sectional view of a sound reduction device according to the invention;
  • 9 a sectional view of a sound reduction device in a further embodiment;
  • 10 a view of a device according to the invention.
  • 1 10 shows a representation of a device 100 for treating containers according to the prior art. This has a housing 108, inside which a blow-off device for containers is arranged. The reference number 2 designates a transport device which transports the containers through the housing and thus to the blow-off. The reference numerals 14 and 16 denote sound insulation devices which are arranged at the entrances and exits of the housing 108 .
  • 2 shows a detailed illustration of one of the sound insulation devices according to the prior art. In this case, the reference number 16a refers to an opening through which containers can be carried out.
  • 3 shows an interior view of the sound insulation device 2 According to the state of the art. It can be seen that several plates 18 are arranged inside the housing, which cause the breaking of sound waves and thus also a certain degree of insulation.
  • 4 shows a representation of a device according to the invention. The reference number 8 refers to a housing. A sound reduction device, designated 6, is arranged within the housing. This has the plurality of soundproofing walls 60 (wherein a soundproofing wall is shown on a side wall and one on the ceiling. The reference number 64 denotes a noise protection body, the component this sound insulation wall is. This runs here in a zigzag fashion in the transport direction of the containers.
  • 5 shows an interior of the housing 8. The noise protection body 64 is also shown here, which, as can be seen here, has a jagged or zigzag-like structure on both a side wall and on the ceiling.
  • 6 shows a sound reducing device or sound reducing device 6 which is arranged on a wall element such as a door 32 . In addition, a housing or a frame 66 can also be seen here, on which the noise reduction device 6 is arranged. The noise barrier 64 preferably has a plurality of openings (not shown) extending from the surface of the noise barrier 64 shown in the figure to the opposite surface. The micro-perforated noise protection body is connected to the door - preferably by means of knurled screws - and can be dismantled without tools for cleaning purposes.
  • 7 shows a representation of the noise reduction device 6. Here again the frame or the housing 66 is shown. The noise protection body 64 is releasably attached to the frame or housing 66 by means of a fastening device, such as knurled screws 15 here. In this way, the noise protection body 64 can be removed and, for example, cleaned separately.
  • 8th shows a side view of a noise reduction device. This has the noise protection body 64 (micro-perforated sheet metal) and a noise protection element 62 which, as mentioned above, can be a PUR mat, for example. An intermediate space Z is formed between the noise protection body 64 and the noise protection element 62 and is also used to reduce noise. Both the noise protection body 64 and the noise protection element 62 are arranged on the housing or frame 66 .
  • 9 shows a representation of a further embodiment of a noise reduction device. In this embodiment, two noise protection bodies 64 and 64a are provided, which are arranged parallel to one another here and form a further intermediate space between them. Preferably, this intermediate space also runs in a zigzag fashion.
  • 10 shows a schematic representation of a device according to the invention. In addition, an application device or blow-off device 4 is shown schematically, which blows off the containers. The two (additional) noise protection devices 14 and 16 are also shown here again. It can be seen that the device has a multiplicity of pivoting doors, which is represented by the dashed lines S in each case. Noise protection devices or the sound insulation walls are preferably arranged on these doors.

The applicant reserves the right to claim all features disclosed in the application documents as essential to the invention, provided they are new, individually or in combination, compared to the prior art. It is also pointed out that the individual figures also describe features which can be advantageous in and of themselves. The person skilled in the art recognizes immediately that a specific feature described in a figure can also be advantageous without adopting further features from this figure. Furthermore, the person skilled in the art recognizes that advantages can also result from a combination of several features shown in individual figures or in different figures.

Claims (15)

Device (1) for treating and in particular drying containers, with a transport device (2) which transports the containers through a blow-off area (4), at least one blow-off device (42) being arranged in this blow-off area (4), which discharges the containers with a gaseous medium, the blow-off area being arranged within a housing (8) which at least partially surrounds this blow-off area, with a feed opening through which the containers are fed to the blow-off area and a discharge opening through which the containers are guided out of the blow-off area again and with a sound-reducing device (6) which reduces the sound occurring inside the blow-off area, characterized in that the sound-reducing device has at least one sound-insulating wall (60) formed inside the housing, this sound-insulating wall having a first planar foam material s noise protection element (62) and a noise protection body (64) arranged adjacent to this first noise protection element (62), one surface of this noise protection body (64) facing the containers. Device (1) after claim 1 , characterized in that the noise protection body (64) has a plurality of openings. Device (1) after claim 2 , characterized in that the openings are micro-openings and in particular micro-slits. Device (1) after claim 2 or 3 , characterized in that the micro-apertures have a triangular shape and in particular the shape of isosceles triangles. Device (1) according to at least one of the preceding claims, characterized in that the noise protection bodies are designed as sheet metal with a predetermined, in particular uniform, thickness. Device (1) after claim 5 , characterized in that the thickness is greater than 0.2 mm, preferably greater than 0.3 mm and/or that the thickness is less than 2.5 mm, preferably less than 2.0 mm, preferably less than 1.5 mm, preferably less than 1 .0mm and preferably less than 0.8mm. Device (1) according to at least one of the preceding claims, characterized in that the noise protection element (62) and the noise protection body (64) are spaced apart from one another at least in sections. Device (1) according to at least one of the preceding claims, characterized in that the noise protection element is a mat and/or the noise protection element consists of PUR foam. Device (1) according to at least one of the preceding claims, characterized in that the noise protection body (64) can be removed from the noise protection element (62). Device (1) according to at least one of the preceding claims, characterized in that the noise protection body has changing and in particular periodically changing distances from the noise protection element. Device (1) according to the preceding claim, characterized in that the noise protection body has a zigzag course. Device (1) according to at least one of the preceding claims, characterized in that the sound insulation wall (60) has a support wall (66) on which the noise protection element (62) and the noise protection body (64) are arranged. Device (1) according to at least one of the preceding claims, characterized in that the noise protection body is a fabric and in particular a calendered fabric. Device (1) according to at least one of the preceding claims, characterized in that the transport device is suitable and intended for transporting the containers in a single row and/or that the transport device is suitable and intended for transporting the containers at a transport speed that is greater than 0.2m/s and/or less than 3.0m/s. Device (1) according to at least one of the preceding claims, characterized in that the feed opening and/or the discharge opening can be adapted to a shape or form of the containers.

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