Device, assembly and method for treating particulate elements

Abstract

The invention relates to a treatment device for deburring particulate elements in the form of tablets, comprising: a chamber (12) which has an inlet (24) for particulate elements and an outlet (26) for particulate elements; a wall (14) for deburring the particulate elements in the chamber, the wall (14) having members for deburring the particulate elements, the inlet being directed at least partially tangential to the wall, the wall being capable of guiding the particulate elements along a helical path in the chamber, at least partly in contact with the wall (14) between the inlet (24) and the outlet (26) to treat the particulate elements by deburring; and an air intake (13) connected to the chamber, the intake being capable of drawing the particulate elements in the chamber towards the deburring wall.

Description

[0001] DEVICE, SYSTEM AND METHOD FOR PROCESSING PARTICULAR ELEMENTS

[0002] technical field

[0003] The present invention relates to a device for processing particulate elements, an assembly and a method for processing particulate elements.

[0004] Previous art

[0005] In the fields of nutrition and pharmaceuticals, a particulate component is a dose intended for oral administration. Such particulate components contain, for example, vitamins, dietary supplements, an active ingredient, etc. During the production of these particulate components, excess material and / or sharp edges may be present and are undesirable.

[0006] Document JP2015131264 describes a device for removing fine powder from a granular substance. However, this document does not cover the processing of particulate matter in tablet form, specifically the deburring of such particulate matter. Furthermore, this document is unsuitable for processing particulate matter in tablet form because it does not prevent damage to the material.

[0007] Therefore, there is a need for a device for deburring particulate elements in tablet form.

[0008] Description of the invention

[0009] To this end, the invention proposes a device for deburring particulate elements in tablet form, comprising: A chamber with a particulate element inlet and a particulate element outlet, A particulate element deburring wall in the chamber, the wall having particulate element deburring elements, the inlet being directed at least partially tangentially to the wall, the wall being able to guide the particulate elements along a helical trajectory in the chamber, at least partially in contact with the wall between the inlet and the outlet to treat the particulate elements by deburring, An air suction connected to the chamber, the suction being able to draw the particulate elements from the chamber towards the deburring wall.

[0010] According to one variant, the wall is a surface of revolution capable of decelerating particulate elements towards the exit.

[0011] According to one variant, in which the deburring features are raised areas, protrusions and / or orifices for removing residue.

[0012] According to one variant, the wall comprises one or more sections with cross-sections of constant or variable area.

[0013] According to one variant, the wall includes a section whose cross-section area decreases towards the exit; preferably the section has a conical shape around the axis.

[0014] According to one variant, the wall includes a cylindrical section.

[0015] According to one variant, the device further includes a spiral capable of guiding at least in part the helical trajectory of the particulate elements in contact with the wall between the inlet and outlet.

[0016] According to one variant, the spiral is a wall conformation or a ramp assembled in the wall.

[0017] According to one variant, the spiral has a constant or increasing pitch.

[0018] According to one variant, the wall is pierced with holes, and the deburring residues are sucked through the holes.

[0019] The invention also relates to an assembly with the device as described above and a particulate element production tool, the suction drawing the particulate elements produced by the production tool towards the chamber.

[0020] According to one variant, the device is above the production tool.

[0021] The invention also relates to a method for treating particulate elements in tablet form by deburring, the method comprising supplying the device described above, drawing the particulate elements into the chamber through the inlet, guiding the particulate elements along a helical path in the chamber by the wall at least partly in contact with the wall between the inlet and the outlet, to treat the particulate elements by deburring, removing the deburring residues, and removing the particulate elements through the outlet.

[0022] According to one variant, the particulate elements are aspirated from a particulate element production tool, with the device being above the production tool.

[0023] According to one variant, the treatment of particulate elements further includes dust removal and / or conveying and / or lifting of particulate elements.

[0024] The use, in this document, of the verb "comprendre" (to understand), its variants, and its conjugations, cannot in any way exclude the presence of elements other than those mentioned. The use, in this document, of the indefinite article "un" (a), "une" (an), or the definite article "le" (the), "la" (the), or "l'" (it) to introduce an element does not exclude the presence of multiple such elements.

[0025] The terms "first >>", "second >>", "third >>, etc. are used in this document exclusively to differentiate different elements, without implying any order between these elements.

[0026] All preferred embodiments and all advantages of the device according to the invention are applicable mutatis mutandis to the present assembly and method, and vice versa. The different embodiments may be considered individually or in combination.

[0027] Brief description of the figures

[0028] Other features and advantages of the present invention will become apparent upon reading the detailed description that follows, for understanding of which reference should be made to the accompanying figures which show:

[0029] - Figure 1, a schematic view of one embodiment of the invention;

[0030] - Figure 2, a view of a detail of Figure 1;

[0031] - Figure 3, another schematic view of the invention.

[0032] The drawings in the figures are not to scale. Similar features are generally denoted by similar reference numerals in the figures. Within the scope of this document, identical or analogous features may bear the same reference numerals. Furthermore, the presence of reference numerals or letters in the drawings shall not be considered limiting, even when such numerals or letters are specified in the claims.

[0033] Detailed description of embodiments of the invention

[0034] The invention relates to a device for processing particulate matter. The device comprises a chamber with a particulate inlet and outlet, a deburring wall for the particulate matter within the chamber, the wall having deburring elements for the particulate matter, the inlet being directed at least partially tangentially to the wall. The wall is adapted to guide the particulate matter along a helical trajectory within the chamber, at least partially in contact with the wall between the inlet and outlet to process the particulate matter by deburring. The device also includes an air intake connected to the chamber, the intake being adapted to draw the particulate matter from the chamber towards the deburring wall. The guidance of the particulate matter between the inlet and outlet by the wall allows for friction of the particulate matter against the wall.This ensures the deburring of particulate matter, with the residue being expelled from the chamber. The device thus enables effective deburring of particulate matter.

[0035] Figure 1 illustrates one embodiment of the particulate processing device 10. In the fields of nutrition, pharmaceuticals, or other industries, a particulate element is a dose (or pill or tablet). Such particulate elements contain, for example, vitamins, dietary supplements, an active ingredient, etc. Particulate elements may be in tablet form. As pharmaceutical tablets, pharmaceutical elements may be medications. Particulate elements may be intended for oral administration.

[0036] The device is used for processing particulate matter. The processing performed by device 10 can preferably be deburring, but can also include dust removal, conveying, lifting, etc., of the particulate matter. In the context of particulate matter processing, device 10 allows, among other things, the deburring of particulate matter in tablet form after its production. For example, particulate matter in tablet form can be produced by a production tool such as a tablet press. A tablet press is a machine in which a volume of powder containing the active ingredient or nutrients is poured into cavities. The powder is then compressed in the cavities, possibly between upper and lower punches, before the resulting tablet is discharged from the cavities. The tablets may contain excess material and / or undesirable sharp edges.Device 10 thus enables the deburring of particulate elements, making them more rounded. In other words, device 10 removes sharp edges or excess material from the particulate elements. The processing of particulate elements also includes dust removal and / or conveying and / or lifting the particulate elements to transport them to other stations in a particulate element production line.

[0037] The device 10 comprises a chamber 12 with a particulate inlet 24 and a particulate outlet 26. The particulate elements enter the device 10, and more specifically the chamber 12, through the inlet 24 and exit through the outlet 26. At the inlet 24, sharp edges may be present on the particulate elements. At the outlet 26, these sharp edges are removed from the particulate elements, thus processing them. Between the inlet 24 and the outlet 26, the particulate elements are guided, at least partially, by a deburring wall 14 within the chamber 12. This guidance by the wall 14 allows the particulate elements to rub against it, thereby deburring them. The debris removed from the particulate elements is evacuated out of chamber 12 as the particulate elements move through chamber 12, between inlet 24 and outlet 26.Preferably, the inlet 24 is directed at least partially tangentially to the wall 14. The particulate elements approach the wall 14 without impact, thus preventing damage to the particulate elements. The direction of the inlet 24 being at least partially tangential—or even tangential—to the wall 14 allows for a circular motion of the particulate elements in contact with the wall 14. The outlet 26 can be vertical, as in Figure 1, but can also be oriented differently, for example, inclined. Preferably, the outlet is designed to prevent damage to the particulate elements (in the form of fragile tablets). To this end, the outlet 26 is such that the elements remain in contact with the wall 14 without falling. The particulate elements are decelerated, preferably gradually. According to Figure 3, outlet 26 can be laterally and / or tangential and / or transverse to wall 14. In other words, outlet 26 is on the side.Such an outlet 26, as shown in Figure 3, also reduces the existing height loss when the outlet is vertical. Furthermore, a lateral and / or tangential outlet 26 allows the particulate elements to be fed into another unit, such as a metal detection unit. The particulate elements are then directed towards the unit, enabling detection without reducing the production rate. The particulate elements are directed towards the unit at a controlled speed, a balance between a speed sufficient to maintain the production rate and a speed reduced to allow a unit such as a metal detection unit to operate.

[0038] The base of the device 10 can be conical (as shown in Figure 3) to facilitate cleaning, for example with water. The conical base allows for drainage (washing by spraying water or filling).

[0039] The wall 14 is configured to guide the particulate elements along a helical trajectory, at least partially in contact with the wall 14 between the inlet 24 and the outlet 26. In other words, the trajectory has a helical shape. The helical trajectory may be around a substantially vertical axis 16. The helical trajectory is spiral (or helical) around the axis 16. The helical or helical trajectory may be regular or irregular. The helical or helical trajectory may be regular or irregular. The pitch of the helical or helical trajectory may be constant or variable. The pitch may be variable in the sense that it may increase, at least over a lower area of ​​the wall. This allows the particulate elements to remain in contact with the wall 14 for as long as possible, even as they are pulled down by gravity.The particles can move in a circular motion around axis 16 while heading towards outlet 26. Upon reaching wall 14 with a tangential motion, the particles move helically towards outlet 26, driven by gravity. The advantage of this helical motion against wall 14 is that the particles do not fall from inlet 24 to outlet 26 without remaining in contact with wall 14. This prevents damage to the particles. On the contrary, this motion allows the particles to be guided by wall 14, at least partially, along the path between inlet 24 and outlet 26. The helical trajectory, spiraling around axis 16, increases the contact time of the particles with the wall. This allows for a longer contact length while maintaining a limited chamber height.Device 10 enables effective deburring, dust removal, and other treatments. The deburred parts or deburring residues (i.e., the parts removed from the particulate elements during deburring in contact with the wall 14) are removed from the particulate elements. Furthermore, dust and / or any other particles adhering to the particulate elements are removed from them and evacuated by centrifugal force along the helical path.

[0040] It is conceivable that the first turn could be mechanically induced in wall 14 to ensure that there is no collision of the particulate elements (for example, in the form of tablets) during their first revolution. For example, a conformation of wall 14 could be designed to ensure a first turn and / or a physical ramp could be used to ensure a descending ceiling on the first turn.

[0041] Device 10 also includes an air intake 13 connected to chamber 12. Device 10 includes a connection to the intake 13. The intake is capable of creating a vacuum in chamber 12. The vacuum in the chamber allows the particulate elements to be drawn into chamber 12 – for example, from a particulate production tool. The intake is capable of drawing the particulate elements into chamber 12 through inlet 24. The particulate elements are drawn towards the wall 14 – at least partially tangential to the wall 14. The particulate elements reach the wall 14 with a certain velocity. The particulate elements are then guided along the helical path between inlet 24 and outlet 26, primarily by gravity. The deburring residues which are removed by contact of the particulate elements against the wall 14, are sucked out of the chamber 12.The residue is removed from chamber 12. The connection to the suction 13 creates a negative pressure in chamber 12, thus not only allowing the tablets to be conveyed by vacuum but also separating particulate matter from debris (and any other particles such as dust). The suction can be generated by any means. The suction 13 allows the removal of deburring residue as well as finer particles, such as dust.

[0042] The wall 14 may include deburring devices for removing particulate matter (not visible in the figures). These deburring devices give the wall 14 a rough texture. The density of the deburring devices may be constant along the wall 14 or variable. The deburring devices may be linear and / or point-like. The deburring devices may be raised features, protrusions, and / or debris evacuation ports (described later). Deburring devices in the form of raised features or protrusions are projections from the wall 14 towards the interior of the device 10. Particulate matter is deburred by contact with the wall 14, and in particular with the raised features and protrusions that form asperities on the wall 14. These may be bumps.

[0043] The wall 14 may have one or more sections with cross-sections of constant or variable area. The cross-sections are transverse to the axis 16. A first section at the inlet 24 may have cross-sections of constant area along the axis 16, in the direction of the outlet 26. The first section may have a shape of revolution around the axis 16. The first section may be cylindrical. The helical path then follows a cylindrical helix. Another section may have cross-sections of variable area. The cross-sections of this section may have decreasing areas. The cross-sections may decrease in area in the direction of the outlet 26. In other words, at least on one section of the wall 14 along the axis 16, cross-sections of the wall 14 that are transverse to the axis 16 have areas that decrease along the axis 16 in the direction of the outlet 26. The wall 14 narrows in the direction of the outlet 26.The area of ​​the sections can decrease regularly or irregularly along axis 16. The decrease can be strict. The wall 14 can have a shape of revolution around axis 16. The wall 14 can have a funnel shape along axis 16 on this segment. The helical trajectory then follows a conical helix. In other words, the wall 14 can have at least one conical segment around axis 16. The conical shape can be defined by a quadratic curve. The conical shape can be defined by a deceleration curve. The wall 14 is a surface of revolution suitable for decelerating the particulate elements towards the outlet 26. The deceleration can be constant or progressive. The geometric characteristics of wall 14 make it suitable for decelerating particulate elements towards exit 26.The deceleration of particulate matter protects it from degradation. This also allows for subsequent processing or analysis of the particulate matter.

[0044] As an example, wall 14 can consist of several sections or a single section: wall 14 can have two sections, with a first cylindrical section having a constant cross-sectional area, and then a second conical section with a decreasing air cross-sectional area towards outlet 26; or wall 14 can have only a single conical section with a decreasing air cross-sectional area towards outlet 26 (a single conical section). Any combination of these sections is possible.

[0045] In general, the wall 14 has a shape configured to impart a (constant) deceleration to the particulate elements within the device. The slope of the wall 14 is optimized to maintain contact between the particulate elements and the wall for as long as possible. The device 10 allows for the extraction of residues, and not specifically fine particles (contact between the particulate elements in tablet form and the wall is important). Contact is ensured by creating a slope that provides physical friction to ensure deburring. Contact is also ensured by creating a deceleration to manage the tablets, which are fragile particulate elements.

[0046] Wall 14 may include openings (or perforations, not visible in the figures). Wall 14 may be perforated by these openings. Chamber 12 is designed to draw residues through the openings – evacuation can also be achieved by centrifugal force. The openings allow for the evacuation of residues. The size of the openings is chosen to allow the evacuation of residues (or any other removed particles, for example, dust particles smaller than the residues) without disrupting the movement of the particles in contact with wall 14 towards the outlet 26. At least one area of ​​wall 14 is perforated with openings, on a portion of the wall along which the particles are in the greatest contact. Possibly, wall 14 is perforated along its entire height within chamber 12.

[0047] Advantageously, the device 10 may include a spiral 28. The spiral 28 is suitable for guiding, at least in part, the helical trajectory of the particulate elements between the inlet 24 and the outlet 26. The spiral 28 extends over at least a portion of the wall 28 between the inlet 24 and the outlet 26. The spiral 28 comprises turns defining a helical path to guide the particulate elements in their helical trajectory between the inlet 24 and the outlet 26. The spiral 28 improves the helical trajectory of the particulate elements in contact with the wall. The spiral 28 allows the particulate elements to be retained over a longer trajectory in contact with the wall 14, before falling by gravity towards the outlet 26. The helical trajectory in contact with the wall is determined by the inlet 24, which is tangential to the wall 24.The spiral 28 improves this movement, and the guidance by the spiral wall contributes to better deburring (and possibly also dust removal or other processes) of particulate matter. The pitch of the spiral 28 follows the described pitch of the helical trajectory, with the associated advantages. The combination of the wall with decreasing cross-sectional areas (particularly conical in shape) and an increasing helical trajectory pitch (and therefore spiral pitch) promotes contact between the particulate matter and the wall, thus improving particulate matter processing.

[0048] For example, the spiral 28 can be a conformation of the wall 14. The spiral 28 can be a single piece with the wall 14. The spiral 28 can be an embossed feature of the wall 14. The spiral 28 can be molded with the wall 14. As another example, according to Figure 2, the spiral 28 can be a separate part of the wall 14. It can be a helical ramp inside the wall 14. The helical ramp can be integrated into the wall 14 by assembly. Regardless of the embodiment, the spiral 28 can have a constant or variable pitch along the axis 16.

[0049] Device 10 is simple to manufacture and assemble. Device 10 can be modular. For example, the inlet 24, the wall 14, and the outlet 26 can be single units assembled as a single module, with chamber 12 forming another module. This assembly can be topped with additional modules, such as a base and a cap, to close chamber 12. Suction can be connected to chamber 12. Disconnecting elements, described later, can also be included.

[0050] The invention also relates to an assembly comprising the device 10 and a tool for producing particulate elements. The device 10 processes the particulate elements produced by the tool. This processing can be by deburring and, in addition, for example, by dust removal, conveying, or elevating the particulate elements. By way of example, the tool for producing particulate elements in tablet form can be a tablet press. As previously mentioned, the tablets are produced in cavities from which they are discharged. The produced particulate elements, which may have sharp edges, are drawn into the device 10 through the inlet 24 for processing, such as deburring. The produced elements can also be dust removed, conveyed, and / or elevated to transport them to other stations in a production line.The device 10 can be located inside the production tool or outside, preferably above it. This reduces the overall footprint. Figure 3 shows another schematic view of the invention (the elements of which can also be combined with those shown in Figure 1). Figure 3 shows an example of assembly 30. Assembly 30 includes device 10. At the inlet 24 of device 10, particulate elements 32 come from a production tool via a conduit 34. The particulate elements 32 are guided by the wall 14 along a helical trajectory, at least partially in contact with the wall 14 between the inlet 24 and the outlet 26. The processing of the particulate elements 32 along the helical trajectory allows, in particular, the deburring of the particulate elements 32.Deburring residues (and possibly other particles such as dust) are removed. The outlet 26 is directed laterally and / or tangentially to the wall 14. This reduces the height loss during the removal of particulate matter 32 (when the wall is vertical, for example). The particulate matter 32 is then removed and oriented. The particulate matter can then be analyzed, for example, by a metal detection unit 36.

[0051] Deburring residues (and other particles such as dust) detached from the particulate elements are collected by cyclonic action 40. This cyclonic action 40 is achieved by injecting air and particulate elements against the wall 14 through the inlet 24. The air circulating through the orifices in the wall 14 swirls within the chamber 12. The cyclonic action 40 is enhanced by suction 13 at the top of the chamber 12, creating a low-pressure area at the center of a cyclone 42. These residues are carried by the cyclone 42 to a container 44. A valve 46, operated by pinching or other means, closes the conduit to the container 44.

[0052] The particulate matter 32 is then collected in a receptacle 38. It is then possible to weigh the mass of the particulate matter 32 collected in the receptacle 38 and the mass of the container 44, and then determine whether or not this approaches the total mass of powder used upstream to manufacture the batch of particulate matter 32 in question. The aim is to be able to weigh the powder removed from the particulate matter 32, which in a conventional system would otherwise be sent to a vacuum cleaner and therefore could not be quantified. Distributors divert the particulate matter 32 between several receptacles 38 (depending on the fill level) and the residues and dust between several containers 44 (depending on the fill level).

[0053] The suction inlet 13 is capable of creating a vacuum in the chamber 12. This vacuum chamber allows for the aspiration and transfer of particulate matter into the chamber 12 – for example, from a particulate matter production tool. The suction inlet is capable of drawing the particulate matter into the chamber 12 through the inlet 24. The particulate matter is drawn towards the wall 14 – at least partially tangentially to the wall 14. The suction inlet 13 allows for the removal of particles finer than deburring residue, such as dust, and the deburring residue is carried by the cyclone 42 to the container 44.

[0054] According to Figure 3, the air intake 13 is connected to the top of the chamber 12. The intake 13 can be connected to a suction system. The intake 13 can be connected to the suction system located remotely, via a pipe 48. Alternatively, the intake 13 can be connected to the suction system located below the device 10 (reference 52) via a pipe 50.

[0055] The assembly 30 may include a housing 54. The housing may enclose at least the device 10, but also at least one of the modules from among the container 44, the metal detection unit 36, the suction system 52, etc. The housing 54 may be mounted on wheels to facilitate positioning in the production line, depending on the available space and the positioning of the modules and units around the assembly 30. The assembly 30 may also be positioned above the production tool. This reduces the footprint of the assembly 30.

[0056] Device 10 is designed so that it can be disconnected from the rest of assembly 30, for example, for cleaning. Specifically, it is possible to disconnect device 10 from the rest of assembly 30 while maintaining the interior of device 10 in a sealed manner. Disconnecting elements can be provided. For example, disconnecting elements at the inlet 24, outlet 26, suction 13, conduit to container 44, etc., allow device 10 to be connected / disconnected while ensuring a leak-proof connection / disconnection (and the interior of device 10 remains sealed). Valves can provide such a seal.

[0057] Furthermore, it is possible to tilt device 10 at an angle strictly greater than 0°. Device 10 can be tilted at an angle strictly greater than 0° and less than 45° or less than 30°.

[0058] The invention allows for better yield and / or better integrity of tablet batches.

[0059] The invention also relates to a method for processing particulate matter. In particular, it is a method for deburring particulate matter in tablet form. The particulate matter is drawn into the device 10 through the inlet 24, specifically into the chamber 12. The method comprises guiding the particulate matter along a helical path within the chamber by the wall 14, at least partially in contact with the wall between the inlet 24 and the outlet 26. The contact between the particulate matter and the wall 14 allows for processing of the particulate matter, for example, deburring. Removing dust from the particulate matter is also possible. The movement of the particulate matter along the helical path in contact with the wall removes excess material and rounds the surface edges of the particulate matter.Deburring residues are removed from chamber 12 (along with dust or other particles). To draw the particulate matter into chamber 12, the suction device 13 creates a negative pressure in chamber 12 by drawing in air. The deburring residues (and possibly dust or other particles) are then removed through wall 14 and out of chamber 12. The particulate matter is subsequently discharged through outlet 26. The particulate matter can be drawn from the particulate matter production tool, with the device 10 being located either within or above the production tool. The process allows for the treatment of particulate matter, including dust removal at the wall contact and / or conveying and / or lifting the particulate matter to transport it to other stations in a particulate matter production line.

[0060] The features and advantages of each figure apply to the other figures. It will be obvious to those skilled in the art that the invention is not limited to the embodiments and examples illustrated and / or described above, but that its scope is more broadly defined by the claims introduced below.

Claims

Demands 1. Device for deburring particulate matter in tablet form, comprising - A chamber (12) with an inlet (24) for particulate elements and an outlet (26) for particulate elements, - A wall (14) for deburring particulate elements in the chamber, the wall (14) comprising deburring elements for particulate elements, the inlet being directed at least partially tangentially to the wall, the wall being able to guide the particulate elements along a helical trajectory in the chamber, at least partly in contact with the wall (14) between the inlet (24) and the outlet (26) to treat the particulate elements by deburring, - An air suction (13) connected to the chamber, the suction being capable of drawing particulate elements from the chamber towards the deburring wall.

2. Device according to the preceding claim, in which the wall (14) is a surface of revolution suitable for decelerating the particulate elements towards the outlet (26).

3. Device according to any one of the preceding claims, wherein the deburring members are reliefs, protuberances and / or residue evacuation orifices.

4. Device according to any one of the preceding claims, wherein the wall (14) comprises one or more sections with constant or variable area sections.

5. Device (10) according to any one of the preceding claims, wherein the wall (14) comprises a section whose cross-sectional area decreases in direction of exit (26), preferably the section has a conical shape around the axis (16).

6. Device according to the preceding claim, in which the wall (14) comprises a cylindrical section.

7. Device (10) according to any one of the preceding claims, comprising a spiral (28) capable of guiding at least in part the helical trajectory of the particulate elements in contact with the wall (14) between the inlet (24) and the outlet (26).

8. Device (10) according to the preceding claim, wherein the spiral (28) is a conformation of the wall (14) or a ramp assembled in the wall (14).

9. Device (10) according to one of the two preceding claims, wherein the spiral (28) has a constant or increasing pitch.

10. Device (10) according to any one of the preceding claims, wherein the wall (14) is perforated with orifices, the deburring residues are aspirated through the orifices. 1 1. Together with the device (10) according to any one of the preceding claims and a particulate element production tool, the suction drawing the particulate elements produced by the production tool into the chamber.

12. Assembly according to the preceding claim, wherein the device (10) is above the production tool.

13. A process for treating particulate elements in tablet form by deburring, the process comprising - the supply of the device (10) according to one of the preceding claims, - the aspiration of particulate elements into the chamber through the inlet (24), - the guidance of particulate elements along a helical trajectory in the chamber by the wall (14) at least partly in contact with the wall between the inlet (24) and the outlet (26) to treat the particulate elements by deburring, - the evacuation of deburring residues, - the evacuation of particulate elements through the outlet (26).

14. Method according to the preceding claim, wherein the particulate elements are aspirated from a particulate element production tool, the device (10) being above the production tool.

15. A method according to the preceding claim, wherein the treatment of particulate elements further comprises dust removal and / or conveying and / or lifting of particulate elements.

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