Particle collecting device comprising a centrifugal separator and a quick-coupling unit

Abstract

The invention relates to a particle collecting device (1) for collecting particles from surfaces for a particle analysis as part of a process for testing the technical cleanliness of test bodies, in particular workpieces and machines, comprising a centrifugal separator (11), to which a suction line (12) is connected in order to suction a particle / air mixture from a surface to be tested such that a suctioned particle / air mixture is rotated in the centrifugal separator (11), and the particles can be centrifuged against a wall and can thus be separated. According to the invention, the particle collecting device has a quick-coupling unit (20) which is paired with the centrifugal separator (11) and which is used to releasably couple an adapter unit that has or can receive a collecting container for collecting the separated particles.

Description

[0001] Particle collection device with centrifugal separator and quick coupling unit

[0002] The present invention relates to a particle collecting device according to claim 1 for collecting particles from surfaces for particle analysis in the context of testing the technical cleanliness of test specimens, in particular workpieces and machines.

[0003] In industrial manufacturing, the requirements for the technical cleanliness of test specimens, especially workpieces and machines, are increasingly increasing. Therefore, the technical cleanliness of components is tested, for example, to validate manufacturing processes or as a regular quality assurance measure during production processes. Various approaches are already known from the state of the art for vacuuming test specimens and conditioning the resulting particle-air mixture in such a way that a subsequent analysis of collected particles can be carried out, in which the particles vacuumed from the test specimen are analyzed and / or documented according to quantity, size, type, and other properties.

[0004] A corresponding approach is known, for example, from DE 20 2016 106 164 U1, which is attributable to the applicant.

[0005] In such particle collection devices, it is already known to provide a centrifugal separator to which an intake line is connected for sucking in a particle-air mixture from a surface to be tested. Such a sucked-in particle-air mixture rotates in the centrifugal separator, and the particles contained therein can be thrown against a wall and thus separated. In the known approaches, the particles separated in the centrifugal separator are conveyed into a collecting container associated with the centrifugal separator, in particular detachably attached to the centrifugal separator, in order to enable subsequent evaluation / analysis from the collecting container or using the collecting container. The collecting container is preferably screwed to a lower outlet of the centrifugal separator.

[0006] In the recent past, however, it has become apparent that the existing capture and / or collection solutions for capturing the particles separated in a centrifugal separator are in need of improvement, as they are sometimes difficult to handle and, moreover, do not allow, or only partially allow, the integration of the particle collection device into a connected or higher-level analysis and evaluation system.

[0007] Against this background, the object of the present invention is to propose a particle collection device for collecting particles from surfaces for particle analysis in the context of testing the technical cleanliness of test specimens, which overcomes the disadvantages of the prior art and in particular enables a safe and at the same time flexible or modular arrangement of a collecting container on a centrifugal separator.

[0008] This object is achieved by a particle collection device having the features of claim 1. The object is also achieved by an analysis and evaluation system with a corresponding particle collection device.

[0009] Advantageous embodiments of the invention are the subject of the following description, as well as the figures and the dependent claims. In principle, all features disclosed below in terms of the device are also to be considered as disclosed and claimable in terms of the method.

[0010] The particle collection device according to the invention for collecting particles from surfaces for particle analysis within the framework of testing the technical cleanliness of test specimens, in particular workpieces and machines, comprises a centrifugal separator to which a suction line is connected for sucking in a particle-air mixture from a surface to be tested, so that a sucked-in particle-air mixture rotates in the centrifugal separator and the particles can be thrown against a wall and thus separated, and wherein, according to the invention, a quick-coupling unit is provided which is assigned to the centrifugal separator and serves for the detachable coupling of an adapter unit which in turn has or can accommodate a collecting container for collecting the separated particles.

[0011] Thus, various advantageous effects are achieved by the present invention. On the one hand, the quick-coupling unit according to the invention enables a correspondingly simple and secure attachment of an adapter unit to the centrifugal separator such that the separated particles are transferred into a collecting container. At the same time, the quick-coupling unit, particularly in conjunction with a modular adapter unit configured, for example, to accommodate different collecting containers, enables various collecting containers to be quickly and securely connected to and detached from the centrifugal separator, in particular to an outlet of the centrifugal separator, in a modular manner and without great effort, for example depending on the intended use of the particle collection device or the evaluation system or method.The basic idea of ​​the present invention is therefore that, via the quick-coupling unit, which is designed and / or arranged in a manner corresponding to the centrifugal separator, a wide variety of collecting containers can be connected to and detached from the centrifugal separator and thus from the particle collection device equally quickly and safely. This significantly improves the operation and application possibilities of the particle collection device according to the invention, and in particular also the integration of the particle collection device into a more complex analysis and / or evaluation system.

[0012] Furthermore, with a corresponding design of the adapter and the collecting container, the formation of an undercut at the transition from the collecting container to the centrifugal separator can be prevented, which means that - unlike with a combination of external and internal threads - particles are deposited in undercuts when leaving the centrifugal separator and are not fed into the analysis.

[0013] Furthermore, the invention enables the adapter and / or the collecting container to be designed accordingly so that no particles are formed when the collecting container is arranged or removed from the outlet or exit of the centrifugal separator, in particular because friction must be overcome or surfaces or contours are provided that rub against each other. This can be achieved, for example, by a linear clamping force exerted by the quick-coupling unit via the adapter onto the collecting container and generated or eliminated when the collecting container is attached to and detached from the centrifugal separator, without causing friction - as is the case, for example, with a combination of external and internal threads. In a first advantageous embodiment, it can be provided that the quick-coupling unit is mounted on an external contour of the centrifugal separator so that it can rotate about a rotation axis.On the one hand, this has the advantage that existing components and surfaces can be used or shared to accommodate and support the quick-coupling unit, meaning that no additional holders, guides, or bearings need to be provided. Furthermore, this has the advantage that the quick-coupling units according to the invention can sometimes be easily retrofitted to existing particle collection devices without great expense. Furthermore, particularly after appropriate securing of the quick-coupling unit, it can be ensured that the quick-coupling unit is essentially permanently connected to the particle collection device, in particular the centrifugal separator. The rotational axis of the quick-coupling unit can preferably represent the axis about which the quick-coupling unit is rotated to connect / disconnect an adapter unit.

[0014] In a further advantageous embodiment, the centrifugal separator can be designed as a single piece, in particular with a single-piece housing. This prevents undercuts at the transition between individual parts of the centrifugal separator, which could lead to unwanted particle deposition.

[0015] In a further advantageous embodiment of the invention, the rotational axis can be provided to run parallel to a main rotational axis of the centrifugal separator. This, as will become more apparent below, enables intuitive handling of the quick-coupling unit and simple connection and / or integration into / on the particle collection device. In a further embodiment of the invention, the quick-coupling unit can have a base body with at least two halves, which can be detached from or engaged with one another, in particular by a movement along the rotational axis.

[0016] This facilitates the installation and, if desired, removal of the quick-coupling unit, both during the original assembly of the particle collection device and during retrofitting. Particularly advantageously, it can be provided that, in the engaged position of the halves of the base body, an additional securing of the halves against each other is provided, for example, by a screw connection, a snap-in connection, or the like. This can, in particular, prevent unintentional release of the halves due to relative movement along the rotation axis.

[0017] The two halves can advantageously have or form all the essential features of the quick-coupling unit. In an advantageous embodiment, the two halves of the quick-coupling unit are merely supplemented by one or more securing or connecting elements that prevent accidental release of the halves. This reduces the number of parts required to provide the quick-coupling unit and facilitates assembly and disassembly. The halves can preferably be made of plastic.

[0018] In a further advantageous embodiment of the particle collection device, it can be provided that the quick-coupling unit has a securing link which enables securing in an axial direction, preferably parallel to the axis of rotation, and / or in at least one direction perpendicular to the axial direction. By securing in the axial direction, it can advantageously be achieved that the adapter unit is subjected to force against a surface of the centrifugal separator, for example indirectly, via a collecting container received or encompassed by the adapter unit, or directly, in such a way that a tight connection or a tight transition is established between the centrifugal separator on the one hand and the collecting container on the other. By securing perpendicular to the axial direction, it can be achieved that unintentional subsequent displacement or slipping of the adapter and thus also of the collecting container is prevented.Furthermore, this allows self-centering of the adapter unit relative to the centrifugal separator and thus also of the collecting container relative to the centrifugal separator.

[0019] The locking link can preferably be designed such that the locking in the axial direction and / or perpendicular to the axial direction is established and / or released by a corresponding rotation of the quick-coupling unit about the rotation axis. The locking link can preferably be formed monolithically with / on the halves.

[0020] According to a further, particularly advantageous embodiment of the particle collection device, it can be provided that the securing link of the quick-coupling unit does not protrude beyond a guide contour of the centrifugal separator for an adapter unit in a release position of the quick-coupling unit transversely to a receiving direction of the adapter unit.

[0021] Such a preferred embodiment of the securing link then enables the adapter unit to be pushed or plugged on along the receiving direction as well as pulled off or removed against the receiving direction, preferably by a linear or rectilinear movement, in particular a translational movement. Advantageously, after the adapter unit has been received by the centrifugal separator, preferably along the guide contour, the quick-coupling unit can be transferred from the release position to a coupling position, in which the securing link can then preferably enable securing in the axial direction and / or perpendicular to an axial direction. In the coupling position, a part of the securing contour preferably projects beyond the guide contour transversely to the receiving direction.This also makes it possible to center the adapter unit or secure the adapter unit transversely to the axial direction and / or along and / or transversely to the mounting direction.

[0022] Overall, a particularly advantageous way of mounting or coupling the adapter unit with the quick coupling unit is made possible.

[0023] According to a further, particularly advantageous embodiment, the centrifugal separator can be provided with an underlying, in particular flat, stop surface, preferably for contacting an edge of a collecting container encompassed or accommodated by the adapter unit. This enables and facilitates the interaction of the quick-coupling unit, adapter, and collecting container in a particularly advantageous manner, since a secure and reliable contact can then be established between the collecting container and the stop surface of the centrifugal separator, in particular by rotating the quick-coupling unit into a coupling position in which an axial securing of the adapter unit and / or an axial contact force of the collecting container, in particular of the edge of the collecting container, against the stop surface of the centrifugal separator is preferably achieved.

[0024] In a further, particularly preferred embodiment of the particle collection device, it can also be provided that the centrifugal separator comprises a further coupling means, preferably a thread, for detachably coupling a collecting container, in particular without the use of an adapter. This can particularly advantageously further improve the use of different collecting containers and / or the ability to integrate them into more complex systems, since a wide variety of collecting container types with a wide variety of uses or analysis options can then be connected to the centrifugal separator, in particular arranged beneath the centrifugal separator, not only via the quick-coupling unit but also via the further coupling means, with or without an adapter unit.Particularly preferably, the further coupling means can be arranged, in particular set back from a lower stop surface of the centrifugal separator, in such a way that the flat and / or planar stop surface is not or not noticeably impaired by the further coupling means, so that the arrangement or transition to a collecting container, preferably via an adapter unit, is also possible on the stop surface without problems and without restrictions.

[0025] According to a further, particularly advantageous variant of the particle collection device, it can be provided that the quick coupling unit has an actuating unit, preferably a lever, with which the quick coupling unit can be transferred from a release position into a coupling position, and vice versa, in particular by rotation about the rotation axis.

[0026] The actuating unit, in particular a lever, allows for the transfer, in particular rotation, of the quick-coupling unit to be achieved relatively easily and quickly, thus enabling a correspondingly quick and uncomplicated coupling or decoupling of an adapter. In another particularly advantageous embodiment of the particle collection device, it can be provided that it comprises an adapter unit that has or can accommodate a collecting container for collecting the separated particles.

[0027] The adapter can, for example, comprise a support section or receiving section as well as a fastening or coupling structure. The collecting container can preferably be formed integrally, possibly even monolithically, with the adapter unit. Alternatively, the collecting container can also be releasably and / or replaceably received and / or guided by the adapter unit.

[0028] Particularly preferably, the particle collection device can comprise an adapter unit and / or a collecting container, wherein the adapter unit is designed to be connected / coupled to the quick-coupling unit on the particle collection device in such a way that a secure and / or tight transition between the centrifugal separator and the collecting container can be established and released by actuating the quick-coupling unit.

[0029] The above-mentioned object is also achieved by an analysis and evaluation system for testing the technical cleanliness of test specimens, in particular workpieces and machines, which comprises a particle collecting device according to the preceding description as well as an adapter unit and a collecting container.

[0030] In a particularly preferred embodiment, the adapter can be designed such that the collecting container can be arranged, secured, and released without forming an undercut at the transition to the centrifugal separator. Furthermore, the adapter is preferably designed in cooperation with the collecting container such that no particles are formed when the collecting container is arranged and removed, in particular because no friction has to be overcome and no surfaces or contours are provided that rub against one another. This can be achieved, for example, by a linear clamping force that is generated or canceled when the collecting container is attached and released, without causing friction - as is the case with a combination of external and internal threads, for example.

[0031] Preferably, evaluation means, in particular sensor means for detecting and / or recognizing and / or measuring the particles contained in the collection container, are assigned to the collection container and / or the adapter unit. For example, imaging modules, in particular camera modules, can be assigned to the collection container. Further preferably, the evaluation units or the evaluation unit can be assigned to the collection container and / or the adapter unit in such a way that an evaluation, preferably an automatic evaluation, is enabled while the collection container is connected, in particular coupled, to the centrifugal separator by means of the adapter unit and the quick-coupling unit.This makes it possible to ensure an automated evaluation of the particles in the collection container in a particularly advantageous manner, whereby an automatic evaluation adapted to the intended use or the test specimen can also be carried out by changing the collection container and / or the associated evaluation means accordingly.

[0032] Advantages of the invention as well as advantageous embodiments and variants are described below with reference to the schematic figures illustrating individual variants. Therein:

[0033] Fig. 1: a structure of a generic particle collection device according to the prior art; Fig. 2: a section of a particle collection device according to the invention in a first embodiment;

[0034] Fig. 3: a centrifugal separator of a particle collection device according to the invention including a quick coupling unit;

[0035] Fig. 4: a quick coupling unit in a perspective view;

[0036] Fig. 5: a quick coupling unit in a plan view;

[0037] Fig. 6: a quick coupling unit in a side view.

[0038] The basic functionality of the present particle collection device can advantageously be implemented according to the disclosure of DE 10 2016 106 164 U1 and / or DE 10 2017 124 265 A1. Reference is made to this disclosure accordingly. Furthermore, the disclosure is fully incorporated into the present disclosure with regard to the basic functionality of the particle collection device and the functionality of the individual assemblies, as well as their interaction.

[0039] A corresponding, generic particle collection device is also shown again in Fig. 1. Shown therein is a particularly portable particle collection device 1 for collecting particles from surfaces for particle analysis as part of testing the technical cleanliness of test specimens. The particle collection device 1 (hereinafter also referred to as device 1) comprises a mounting or support plate 2. The handle means in the form of two spaced-apart carrying handles 3 can be omitted, in particular, if the device 1 is arranged on a movable, particularly mobile, substructure, which preferably comprises or provides further storage devices and supply devices for operating the device 1.

[0040] A frame structure 5 is fixed on the carrier plate 2 in order to hold or fasten the individual components of the device 1.

[0041] The device 1 further comprises a compressed air connection 6 for detachably connecting a compressed air line, as well as adjustment means 7 for setting a working pressure, in particular a target pressure, of preferably 5 bar. The compressed air connection 6 is connected via a compressed air line to a vacuum source 8, which generates a suction pressure / negative pressure in a vacuum supply line 9 using the supplied compressed air. For this purpose, the vacuum source 8 has a jet nozzle. The air flowing out of the vacuum source 8 can be connected to a silencer 10 of the device 1 via connecting lines (not shown).

[0042] The vacuum source 8 can alternatively be provided externally, for example, via a wet and / or dry vacuum cleaner. The internal or external vacuum source 8 generates a negative pressure in the vacuum supply line 9, via which a centrifugal separator 11 (cyclone) is supplied with negative pressure. As a result, an air particle mixture from a surface to be tested is sucked into the centrifugal separator 11 via a suction line 12. The suction line 12 has a suction nozzle 13 designed as a brush nozzle at its end.The suction line 12 opens into the centrifugal separator 11, which opens on a bottom side into a collecting container 17 which is detachably connected to the centrifugal separator 11 and which, in the generic example, can be made of glass and is detachably attached to the centrifugal separator 11 via a screw connection, preferably via intermeshing threads, particularly preferably a corresponding internal thread of the centrifugal separator 11 and an external thread of the collecting container 17.

[0043] The known or generic screwing of the collecting container 17 can be useful for various applications of the particle collection device according to the invention. Therefore, this possibility is also retained in a particle collection device according to the invention, as shown in Fig. 2.

[0044] Fig. 2 shows a section of the particle collection device 1 according to the invention, in which the centrifugal separator 11, the suction line 12, the suction nozzle 13, and the vacuum line 9 are again shown. The suction line 12 opens into the centrifugal separator 11 at an end facing away from the suction nozzle 13, on the underside of which the collecting container 17 is arranged, in particular screwed in. The centrifugal separator 11 can be designed as a single piece in order to avoid undercuts at transitions between components as completely as possible, since particles can undesirably accumulate in such undercuts or gaps. Alternatively, the centrifugal separator 11 can be provided with a single-piece base body.

[0045] However, it has been found that other, in particular alternative, collecting containers 17, which may already be configured to interact with an analysis system when mounted or accommodated on the particle collection device, can also be provided on the particle collection device 1 as quickly and easily as possible.

[0046] For this purpose, the particle collecting device 1 according to the invention provides a

[0047] Quick coupling unit 20 is provided which, as shown in Fig. 2, is mounted on an outer contour 21 of the centrifugal separator 11 so as to be rotatable about a rotation axis R. In Fig. 2 it can already be seen that the quick coupling unit 20 comprises an actuating unit 22 in the form of a lever and a securing link 23 which runs in particular radially or at least partially / section-wise.

[0048] The securing link 23 can form or have a structure / shape that repeats several times in the circumferential direction, ensuring that an adapter unit is pressed or preloaded in a uniform manner. The quick-coupling unit 20 is configured to interact with an adapter unit not shown in Fig. 2, which in turn can accommodate or otherwise provide alternative collecting containers as a replacement for the collecting container 17 in Fig. 2.

[0049] On the bottom side or underside, the centrifugal separator can have a preferably flat and / or level stop surface 32, against which alternative collecting containers can be pressed or subjected to force when a corresponding adapter unit including collecting container is moved and / or pre-tensioned in the direction of the rotation axis R by a rotation of the quick coupling unit 20.

[0050] Fig. 3 again shows an enlarged view of the centrifugal separator 11 together with the quick coupling unit 20 guided on the outer contour 21 of the centrifugal separator 11. The quick coupling unit 20 essentially consists of two halves 24 and 25, which can be detached from one another or engaged with one another by a movement along the rotation axis R. For this purpose, the halves 24, 25 have correspondingly complementary connecting contours 26. The connecting contours 26 preferably also run along the actuating unit 22 of the quick coupling unit 20, which is designed as a lever. The centrifugal separator 11 comprises a guide contour 27, which can be used for guiding, in particular for lateral guiding, the adapter unit when receiving or attaching an adapter unit (not shown). In the relative arrangement or rotational position of the quick coupling unit 20 with respect to the centrifugal separator 11, as shown in Fig.3, it can be seen that the circumferentially extending locking guide 23, transverse to the receiving direction A of an adapter unit, does not protrude beyond the guide contour 27. Accordingly, the quick-coupling unit 20 is in a release position of the quick-coupling unit 20.

[0051] From Fig. 3, it can already be seen that upon actuation of the actuating unit 22 and a resulting rotation of the quick-coupling unit 20 relative to the centrifugal separator 11, the locking link 23 protrudes laterally beyond the guide contour 27, whereby securing of an adapter perpendicular to an axial direction X can be achieved by appropriate clamping of the adapter. The locking link 23 can also be used to center an adapter perpendicular to the axial direction X.

[0052] As becomes even clearer with reference to Fig. 6, the securing links 23 also have one, preferably several, gradient(s) or ramp(s) distributed over the circumference in the axial direction X. As a result, the rotation of the quick coupling unit 20 relative to the centrifugal separator 11 can also be used to secure an adapter unit in the axial direction X or along the rotation axis R. Fig. 3 also shows the opening 33 for connecting the suction hose 12, which is not shown for reasons of clarity.

[0053] Fig. 4 again shows a larger view of the quick-coupling unit 20 without the centrifugal separator 11 shown in Fig. 3. Fig. 4 again shows the design of two halves 24, 25 that can be displaced relative to one another in the axial direction X and are detachable, along with the associated connecting contour 26. The securing link 23, which extends in sections in the circumferential direction, is also shown.

[0054] In the top view of Fig. 5, it can be clearly seen that the securing link 23 of the quick coupling unit 20 has two opposing flattened sections 28 and, adjacent to them on both sides, likewise opposing curved sections 29. This advantageously enables the release position already shown in Fig. 3 as well as a securing position of the quick coupling unit 20 not explicitly shown, wherein in the coupling position the curved sections 29 of the securing link 23 preferably project laterally beyond a guide contour 27 and engage or engage in corresponding geometries, for example grooves or bearing surfaces of an adapter unit, or come into contact with these, whereby a securing perpendicular to the axial direction X can then be provided.

[0055] In the side view of Fig. 6, which again shows the quick-coupling unit 20, it can be seen that the halves 24, 25 have recesses 30 into which connecting means can be inserted or received in order to prevent unintentional release or displacement of the halves 24, 25 along the rotation axis R. The securing means themselves are not shown for reasons of clarity. In addition, the side view of Fig. 6 shows the flanks 31 of the securing link 23, which rise in the axial direction X. These can secure an adapter unit in the axial direction X when the quick-coupling unit 20 rotates about the rotation axis R, in particular by pressing the adapter unit and / or a collecting container from below against a stop surface 32 of the centrifugal separator 11 and a correspondingly opposite pressing effect between the securing link

[0056] 23 and the adapter unit is constructed or generated.

[0057] Reference symbol

[0058] 1 particle collection device

[0059] 2 Mounting or support plate

[0060] 3 carrying handles

[0061] 5 Frame structure

[0062] 6 Compressed air connection

[0063] 7 Adjustment tools

[0064] 8 Vacuum source

[0065] 9 Vacuum supply line

[0066] 10 silencers

[0067] 11 centrifugal separators

[0068] 12 intake line

[0069] 13 Suction nozzle

[0070] 17 collection containers

[0071] 20 Quick coupling unit

[0072] 21 Outer contour

[0073] 22 Actuating unit

[0074] 23 Safety backdrop

[0075] 24 1st half

[0076] 25 2nd half

[0077] 26 connecting contours / contour

[0078] 27 Guide contour

[0079] 28 flattened sections

[0080] 29 curved sections

[0081] 30 recesses

[0082] 31 flanks

[0083] 32 stop surface

[0084] 33 Opening A Shooting direction

[0085] R rotation axis

[0086] X axial direction

Claims

Claims 1. Particle collection device (1) for collecting particles from surfaces for particle analysis within the framework of testing the technical cleanliness of test specimens, in particular workpieces and machines, comprising a centrifugal separator (11) to which a suction line (12) is connected for sucking in a particle / air mixture from a surface to be tested, such that a sucked-in particle / air mixture rotates in the centrifugal separator (11) and the particles can be thrown against a wall and thereby separated, characterized by a quick-coupling unit (20) assigned to the centrifugal separator (11) which serves for the detachable coupling of an adapter unit which has or can receive a collecting container for collecting the separated particles.

2. Particle collecting device according to claim 1, characterized in that the quick coupling unit (20) is arranged on an outer contour (21) of the centrifugal separator (11) so as to be rotatable about a rotation axis (R).

3. Particle collecting device according to one of claims 1 or 2, characterized in that the axis of rotation runs parallel to a main axis of rotation of the centrifugal separator (11). Particle collection device according to claim 3, characterized in that the quick-coupling unit (20) has a base body with at least two halves (24, 25) that can be detached from one another or engaged with one another, in particular by a movement along the rotation axis (R). Particle collection device according to one of the preceding claims, characterized in that the quick-coupling unit (20) has a securing slot (23) that enables securing in an axial direction (X), preferably parallel to the rotation axis (R), and / or in at least one direction perpendicular to the axial direction (X).Particle collection device according to one of the preceding claims, characterized in that the securing link (23) of the quick-coupling unit (20) does not protrude beyond a guide contour (27) of the centrifugal separator (11) for an adapter unit in a release position of the quick-coupling unit (20) transversely to a receiving direction of the adapter. Particle collection device according to one of the preceding claims, characterized in that the centrifugal separator (11) has an underlying, in particular flat, stop surface (32), preferably for the application of a rim. of a collecting container (17) encompassed or accommodated by the adapter. Particle collecting device according to claim 6, characterized in that the centrifugal separator (11) comprises a further coupling means, preferably a thread, for releasably coupling a collecting container (17), in particular without the use of an adapter. Particle collecting device according to one of the preceding claims, characterized in that the quick-coupling unit (20) has an actuating unit, preferably a lever, with which the quick-coupling unit (20) can be transferred from a release position into a coupling position, and vice versa, in particular by rotation about the rotation axis (R).Particle collection device according to one of the preceding claims, characterized in that the securing link (23) of the quick-coupling unit (20) does not protrude beyond a guide contour (27) for an adapter unit in a release position of the quick-coupling unit (20) transversely to a receiving direction (A) of the adapter. Particle collection device according to one of the preceding claims, characterized by an adapter unit which has or can receive a collecting container (17) for collecting the separated particles.

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