EP2203254B1 - Broyeur vibrant et procédé de nettoyage de broyeurs vibrants - Google Patents

Broyeur vibrant et procédé de nettoyage de broyeurs vibrants Download PDF

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Publication number
EP2203254B1
EP2203254B1 EP08803949A EP08803949A EP2203254B1 EP 2203254 B1 EP2203254 B1 EP 2203254B1 EP 08803949 A EP08803949 A EP 08803949A EP 08803949 A EP08803949 A EP 08803949A EP 2203254 B1 EP2203254 B1 EP 2203254B1
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EP
European Patent Office
Prior art keywords
discharge
discharge groove
groove
blow
base
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EP08803949A
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German (de)
English (en)
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EP2203254A1 (fr
Inventor
Ernst Haas
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FLSmidth AS
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FLSmidth AS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/16—Mills provided with vibrators

Definitions

  • the invention relates to a vibrating mill, in particular disc vibrating mill, with a grinding unit, wherein the grinding unit has a particular lowerable grinding floor and a discharge floor, further comprising the discharge floor has a circulating discharge chute, for conveying the ground material to or through a discharge element.
  • Vibratory mills or grinding units of the type in question are known and are used for example for grinding a sample of pourable, granular material in the course of preparation of the sample for desired analyzes.
  • the discharge of shredded ground material takes place after a lowering of the grinding ground by means of a vibrating or tumbling movement of the grinding unit into the discharge chute.
  • the comminuted material to be ground is also moved under the influence of centrifugal forces radially outward into the surrounding discharge chute.
  • a disadvantage is felt that it can also come, depending on the chosen regrind, to an insufficient and not always reproducible discharge of the ground material. Only by way of example cementitious regrind is addressed here.
  • blower nozzle In the event that, for example, only one blower nozzle is provided on the circumference of the discharge chute, it is possible to arrange it preferably at the discharge element at the periphery of the grinding floor or the discharge chute To arrange position. In this way, it is possible to achieve that the fluid, preferably compressed air or nitrogen, supplied for cleaning by the blow-off nozzle flows through all sections of the discharge chute extending between the fluid supply location and the discharge element, so that flow-less chute sections can be avoided and the entire discharge chute can be cleaned.
  • the fluid preferably compressed air or nitrogen
  • a plurality of exhaust nozzles are arranged on the circumference of the discharge chute for blowing out the discharge chute and that they are spaced at least approximately regularly, more preferably even along the circumference at least approximately uniformly along the circumference of the discharge chute.
  • the intensity and the uniformity of the cleaning effect can be further improved by this measure.
  • This design also ensures that the discharge chute is cleaned along its entire circumference.
  • the regular or even distribution of the position of the discharge nozzles extends along the entire or at least the substantially entire circumference of the discharge chute.
  • one or more, preferably at least approximately evenly spaced, tangentially oriented discharge nozzles are provided along the circumference of the discharge chute and / or that one or more, in particular at least approximately uniformly spaced, radially oriented blow-off nozzles are provided along the circumference of the discharge chute.
  • tangentially oriented discharge nozzles and / or radially oriented discharge nozzles each have a bore formed in the discharge base of the vibratory mill and preferably have a connection bore for a fluid connection, which has a cross-section, preferably having an internal thread, on the nozzle inlet side.
  • the discharge chute may preferably be designed sloping towards the discharge element.
  • a sloping formation is preferably at least provided in the region of the gutter bottom, but can also cover other cross-sectional areas depending on the channel design and in particular channel cross-section.
  • the discharge chute is formed continuously continuously sloping, with the exception of at least one step-shaped transition, in particular with the exception of at least one wall-like separation region between a gutter start region and a Rinnertend Scheme, in which the gutter bottom is lower than in the gutter region.
  • the discharge chute is preferably formed in the form of a helix.
  • the discharge chute extends along the predominant extent of the grinding floor, in particular along the substantially entire or even the entire circumference of the grinding floor.
  • the sloping channel bottom or optionally the entire discharge chute can follow the inclined course of a helical or spiral turn or a section of such a turn.
  • the discharge chute follows the outline of a circular line along the predominant circumference of the grinding floor and extends in a groove end area deviating outwardly from the circular line, in particular running tangentially to the circular line.
  • the boundary of the discharge channel in the channel end region has an opening, wherein the opening may preferably lie in the channel bottom and / or in the region of the radially outer channel wall.
  • the channel bottom is located in the channel start region below the surface of the grinding ground.
  • the discharge tray is preferably fixedly connected, in particular in one piece, with a cylinder part, in which a piston used for lowering or raising the grinding floor, for example further pneumatically / fluidically actuated piston, is guided.
  • a further improvement in terms of the grinding result is achieved in that the discharge tray is inflatable so it can be cleaned using a fluid, for example with air but also by means of a fluid such as nitrogen.
  • a fluid for example with air but also by means of a fluid such as nitrogen.
  • residual regrind is blown in the direction of the discharge chute.
  • outlet nozzles pointing or opening tangentially into the discharge chute, which support the transport of the ground material from the discharge tray in the direction of the discharge element.
  • one or more, preferably evenly spaced, tangentially oriented discharge nozzles may be provided.
  • tangentially oriented exhaust nozzles are aligned so that their opening into the discharge chute nozzle outlet has a pointing in the direction of the discharge chute Ausblas therapiesskomponente.
  • the term "in the direction of fall” here means in the direction in which the discharge chute or at least the channel bottom leads continuously or discontinuously downwards.
  • blowing nozzles are arranged in the discharge floor or, if appropriate, arranged for impinging the discharge gap and for blowing out ground material into the discharge chute.
  • blowing nozzles in particular the further blowing nozzles acting on the discharge gap, are directed radially inward.
  • one or preferably a plurality of preferably uniformly spaced, radially oriented blow-off nozzles can be provided along the circumference of the discharge chute.
  • the radially oriented exhaust nozzles open into a ventilation duct which extends in the circumferential direction of the discharge chute, preferably continuously or closed, wherein the ventilation duct by means of a relatively reduced cross-section compared to him, preferably annular in the circumferential direction, gap is connected to a gutter chamber adjacent to the discharge chute.
  • the said annularly extending gap may in this case extend substantially perpendicularly or at least inclined to a reference plane spanned by the grinding ground, the lower gap end being adjacent to the radially outer boundary wall of the discharge chute or the discharge chute chamber, preferably at the upper edge region of the boundary wall.
  • the cleaning fluid for example compressed air or nitrogen
  • the cleaning fluid which is supplied with overpressure by means of one or more radially oriented discharge nozzles, can first be distributed in the circumferential direction by means of the said ventilation channel be blown from there through the cross-section reduced annular gap along the entire circumference or desired peripheral portions from above against the radially outer boundary wall of the discharge chute.
  • the cleaning fluid thus flows in cross section from the uppermost point of the outer edge down into the discharge chute chamber.
  • a high degree of homogenization of the flow can be achieved even with a small number of radially oriented exhaust nozzles relative to the circumferential direction.
  • the flow when entering the discharge chute chamber instead of the previously radial flow direction may have a virtually complete or at least substantially vertical direction of flow directed along the outer boundary wall. It is preferred that by means of the ventilation chamber a uniform along the entire circumference of the Austragsrinne down, in particular veil-like effluent air flow is formed, which can remove dirt from the radially outer boundary wall and the wall of the discharge chute. In this respect, it is understood that the fluid does not need to be supplied to the ventilation duct by radially oriented exhaust nozzles, but these nozzles could also have a different orientation.
  • pairs assigned to quasi specific circumferential regions of the discharge chute are each formed from one tangentially and one radially oriented blow-off nozzle, wherein again preferably such pairs are distributed along the preferably entire groove circumference and in particular are uniformly spaced from one another in the circumferential direction.
  • a functional one Embodiment is seen in that along the circumference of the Austragsrinne viewed in the direction of deflection disposed behind each of a tangentially oriented exhaust nozzle per a radially oriented exhaust nozzle.
  • the compressed air (or cleaning fluid) blown into the discharge chute chamber by means of the radially oriented blow-off nozzles is transported onwards by the tangentially oriented blow-off nozzles in the direction of the fall.
  • the ventilation chamber causes no complete homogenization of the radially supplied fluid in the circumferential direction, it comes due to the described direction sequence of the exhaust nozzles that the leaked from the radially oriented exhaust nozzles or from the gap compressed air (or. Cleaning fluid) is "pushed" by the effluent from the tangentially oriented discharge nozzle pressure fluid quasi in the direction of fall under detachment and entrainment of sample or Mahlgutresten.
  • the nozzle outlet of tangentially oriented Ausblasdüsen at a smaller vertical distance from the channel bottom in the Austragsrinne emanates as the fluid outlet of the ventilation duct or its gap end, preferably the nozzle outlet of tangential oriented exhaust nozzles based on the height of the Austragsrinnenquerroughes in the lower cross-sectional half opens.
  • the discharge element is connected by means of an opening with the gutter end region of the discharge chute, preferably at the lowest point of the gutter bottom.
  • the discharge element is connected to a suction device for suction of the cleaning fluid, in particular of air or nitrogen, or at least temporarily connectable.
  • the piston has two piston sections of different diameters, wherein the piston walls of the piston sections overlap while leaving a vertically opening recess for a collar.
  • the collar is formed coaxially to the cylinder part on the underside of the outlet bottom and sealingly against the upper piston portion of comparatively smaller diameter, wherein it is provided in particular that the insertion recess is geometrically, in particular laterally form-fitting, adapted to the collar.
  • this at the lower piston portion of comparatively larger diameter by means of at least one Piston guide ring is guided in the cylinder part.
  • the grinding wall is held positively.
  • the grinding soil is sealed relative to a side wall of the discharge chute. This more preferably both in the lowered and in the raised position of the same.
  • the invention relates to a cleaning method for a vibrating mill, Preferably, for a disc vibrating mill, with a milling unit, wherein the milling unit comprises a preferably lowerable grinding floor and a discharge floor and the discharge floor has a circulating discharge chute for conveying the ground material to or through a Austragslement.
  • the invention has for its object to provide an advantageous cleaning method, with which in particular the disadvantages described can be avoided as much as possible.
  • an improved cleaning effect can be achieved compared to the conventional technique.
  • an improved cleaning thereof can be achieved, whereby this effect is further enhanced by an additional, in particular simultaneous, shaking can be.
  • the discharge tray in particular the discharge chute
  • the discharge chute is cleaned by means of an outlet nozzle arranged on the circumference of the discharge chute or by means of several discharge nozzles distributed along the circumference of the discharge chute, whereby preferably several discharge nozzles are used which are at least approximately in the circumferential direction of the discharge chute regularly, more preferably at least approximately evenly spaced from each other.
  • blow-out nozzles oriented tangentially and / or radially to the discharge chute can be used.
  • tangentially oriented discharge nozzles and further, in particular radially oriented, discharge nozzles can be pressurized simultaneously with fluid, preferably with compressed air or nitrogen. It is also preferred that a vibrating mill is used, the discharge chute is designed sloping down to the discharge.
  • An expedient further development of the method provides that the discharge chute is blown out by means of tangentially oriented to their scope exhaust nozzles in the direction of their direction of decline. In particular in connection therewith, it is preferred that the cleaning fluid blown in the direction of deflection of the discharge chute be blown into the lower cross-sectional half of the discharge chute.
  • the radially outer boundary wall of the discharge chute be blown from top to bottom with a cleaning fluid, such as compressed air or nitrogen.
  • a cleaning fluid such as compressed air or nitrogen.
  • This can preferably take place using further blow-out nozzles oriented in particular radially with respect to the groove circumference, which preferably open into a ventilation duct extending along the discharge chute circumference and above into an annular gap.
  • a further development may also be that fluid is sucked out of the discharge chute through the discharge element, wherein the discharge element is connected by means of an opening to the gutter end region of the discharge chute, preferably at the lowest point of the gutter bottom.
  • the extracted air quantity may be equal to or per unit time slightly larger than the amount of air blown.
  • the purging is carried out as a pulse-like blowing.
  • the grinding soil is sealed relative to a side wall of the discharge chute.
  • the cleaning method according to the invention may preferably be carried out using a vibrating mill having individual or further features as described above.
  • Fig.1 shows a cross section through the upper portion of a vibrating mill 1 according to the invention according to a preferred embodiment, by means of which also the cleaning method according to the invention is executable.
  • This is a so-called disc vibrating mill whose grinding unit 2 represents an assembly that can be excited into vibrations by a separate oscillating drive.
  • the grinding unit 2 includes a grinding chamber 3, which is externally bounded by a cylindrical grinding wall 4. On the underside during the grinding operation, this is followed by a substantially circular grinding bottom 5. On this are as grinding elements a grinding ring 6 and a millstone 7. Between the grinding wall 4 and Mahlring 6 a grinding gap 8 is formed. Another grinding gap 9 is established between the grinding ring 6 and the grinding stone 7. This allows a lateral relative movement of Mahlring 6 and millstone 7 both to each other and with respect to the grinding wall. 4
  • To the grinding wall 4 includes radially outside a housing ring 10, which is screwed on the underside with a discharge base 12 forming a housing base 11 and thereby connected to a drive flange 13.
  • a drive flange may be any, commonly used for vibrating mills and therefore not connected in the figures with oscillating drive.
  • the housing ring 10 On the upper side, the housing ring 10 is screwed to a housing cover 14, which is centered in a form-fitting manner to the housing ring during placement by means of an annular projection 32.
  • the grinding wall 4 is form gleichgehaltert inside wall of the housing ring 10, held in the axial direction between an upper, radially inwardly projecting collar of the housing ring 10 and the underside by a provided support ring 29.
  • a cylinder part 15 is formed on the underside.
  • a piston 16 is guided by means of a piston guide ring 31, which enters the bottom of the grinding base 5 on the underside. Via a fluidic control of the piston 16, the grinding base 5 can be raised or lowered over it.
  • the piston 16 has two successive piston sections 17 and 18 in axial extension. These have different diameters, wherein the grinding base 5 facing piston portion 18 is reduced in diameter relative to the piston portion 17.
  • the piston walls 19 and 20 of the piston portions 17 and 18 overlap, leaving a vertically upward opening, annular Einfahrraus Principleung 21.
  • a pressure chamber 33 in the form of an annular cavity is formed between the cylinder part 15 and the piston 16.
  • the pressure chamber 33 is connected via a line 35 with a connecting piece 36 in connection, so that can be applied to lower the grinding floor 5, an overpressure.
  • the piston 16 has at its lower end face a radially inner annular projection, which in the in FIG. 1 shown lower travel position forms a limit stop with a plate 53. In this case remains radially adjacent to the annular projection serving as a further pressure chamber 50 annular gap.
  • This is connected via a line 54 with a connecting piece 52 in connection, so that can be applied to raise the grinding floor 5 to the pressure chamber 50, a pressure.
  • the pressure chamber 50 continues in the piston interior 51 in the embodiment shown.
  • the collar 22 in the exemplary embodiment is the ring section 22, so that in this embodiment Context the terms collar and ring section are also interchangeable.
  • the grinding base 5 which is acted on at the underside by the piston 16, comes sealingly against the grinding wall 4 at the edge Fig. 1a shown.
  • a discharge gap 23 is released, by which further vibrational excitation passes the crushed millbase in an annular annular discharge chute 24.
  • the grinding floor 5 is circumferentially covering provided with a ring seal 39. This is supported in the region of its upper end radially inward against a cylinder wall of the grinding floor 5 and in the region of its lower end end face against the discharge floor 12 from.
  • the Austragsrinne 24 is circumferentially sloping down to a discharge element 25, this further helically continuous falling continuously, with the exception of a step-shaped transition 26, between the gutter start region lowest height and the discharge element 25 associated Rinnenend Scheme largest height.
  • FIG. 3 shows in a plan view that the discharge chute 24 is formed continuously continuously sloping, with the exception of a wall-like separation region 26 'between a groove start region 40 and a gutter end portion 41, in which the groove bottom 42 is lower than in the gutter region 40.
  • the level difference of the gutter bottom 42 between the gutter starting region and the gutter end region can be, for example, 10 mm, but may also assume different values.
  • the discharge chute 24 extends following a circular line. Only in the gutter end region 41 does the discharge chute 24 deviate outward from the circular line along a tangential line 43, the boundary 44 of the discharge chute 24 (cf. FIGS.
  • FIG. 12 whose cut is something of FIG. 1 deviates (cf. FIG. 3 ), also shows that the opening 45 adjacent to the discharge element 25 is located in the gutter end region 41 at the lowest point of the gutter bottom 42.
  • the discharge floor 12 or the discharge chute 24, moreover also the discharge gap 23 resulting after lowering the grinding floor 5, can be blown out by means of compressed air.
  • blow-off nozzles 27 and 28 are provided, wherein the blow-off nozzles 27 point tangentially into the discharge chute 24, this further in the direction of inclination of the discharge chute 24.
  • the blow-off nozzles 28 are directed radially, in particular for blowing out or for cleaning the area of the discharge gap 23, for example with compressed air.
  • FIG. 3 illustrates that in the example chosen on the discharge tray 12 each three blow nozzles 27 are provided for tangential blowing and three blow nozzles 28 for radial blowing. In this case, along the circumference of the distance between each two identical nozzles by a multiple greater than the distance between two closely adjacent nozzles 27 and 28.
  • a connection 46 for a radial exhaust nozzle 28 and a connection 47 for a tangential exhaust nozzle 27 are shown.
  • the piston 16 is fixed at its upper end wall 48 by means of a plurality of circumferentially distributed screws 49 with the grinding base 5.
  • the entire device is essentially tight. It takes place at the same time on the Austragselement 25 an active suction instead.
  • the extracted air quantity may be equal to or per unit of time also slightly larger than the amount of air blown. It is also a pulse-like bubbles possible.
  • the grinding unit 2 of the vibrating mill 1 can be supported via a sliding guide and further optionally have speed-changing means.
  • German patent applications with the file number DE 10 2007 017 131 A1 and DE 10 2006 042 823 A1 directed.
  • the content of these patent applications is hereby incorporated in full into the disclosure of the present invention, also for the purpose of including features of these patent applications in claims of the present invention.
  • Fig. 3 show the vibrating mill 1 in the exemplary embodiment selected distributed on the circumference of the discharge channel 24 has a plurality, in the concrete example six, exhaust nozzles 27, 28.
  • the respective positions of the exhaust nozzles along the circumference of the Austragsrinne are Fig. 3 refer to.
  • the three tangentially oriented purging nozzles 27 are equidistantly spaced from each other along the circumference, so that the one between two adjacent pebbles Positions formed angle is 120 degrees each.
  • the blow-off nozzles 27 and 28 are each formed as recesses or bores in the discharge floor 12.
  • the contour of the tangentially oriented exhaust nozzles 27 can also be schematic Fig. 3 be removed and includes on the outlet side a directly into the discharge chute 24 opening, relatively narrow bore 55 and a nozzle adjacent thereto subsequent, compared with cross-sectional larger and provided with internal connection bore 56, to which the example.
  • visible connection 47 which may for example be connected to a compressed air line, can be connected.
  • the longitudinal contour of the radially oriented exhaust nozzles 28 is the Figures 3 and 13 removable.
  • this contour also comprises a relatively narrower bore 57 at the nozzle exit side and a connecting bore 58, which is provided with an internal thread, adjoining the nozzle inlet side, into which the connection 46, for example a compressed air supply line, is connected by screwing.
  • Fig. 13 is further shown that the nozzle outlet side holes 57 of the radially oriented exhaust nozzles 28 open into a ventilation duct 59, which in the circumferential direction U (see. Fig. 3 ) of the discharge chute extends. At this closes at the radially inner edge down to a vertically extending gap 60 at.
  • the diameter of the bore 57 is a multiple of the width of gap 60.
  • the discharge chute 61 at the bottom and at the Pages of the discharge chute 24 is bounded.
  • the lower gap end 62 is adjacent to the radially outer boundary wall 63 of the discharge chute 24 at its upper end.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (20)

  1. Broyeur vibrant (1), en particulier broyeur vibrant à disques, avec une unité de broyage (2), dans lequel l'unité de broyage (2) présente un fond de broyage (5), en particulier abaissable, et un fond de décharge (12), dans lequel le fond de décharge (12) présente en outre une rigole de décharge périphérique (24), pour acheminer le matériau broyé vers ou à travers un élément de décharge (25), caractérisé en ce qu'il est prévu sur le pourtour de la rigole de décharge une ou plusieurs tuyères de purge (27, 28) pour purger la rigole de décharge (24).
  2. Broyeur vibrant selon la revendication 1, caractérisé en ce que les tuyères de purge (27, 28) ont des positions espacées le long du pourtour de la rigole de décharge (24) de manière au moins approximativement régulière, en particulier le long du pourtour de manière au moins approximativement égale.
  3. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il est prévu le long du pourtour de la rigole de décharge (24) une ou plusieurs tuyères de purge (27) orientées tangentiellement, en particulier espacées de manière au moins approximativement égale, et/ou en ce qu'il est prévu le long du pourtour de la rigole de décharge (24) une ou plusieurs autres tuyères de purge (28) orientées en particulier radialement, notamment espacées de manière approximativement égale.
  4. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce que la rigole de décharge (24) se présente en pente vers l'élément de décharge (25).
  5. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce que la limite (44) de la rigole de décharge (24) présente une ouverture (45) dans la zone de fin de rigole (41) dans la zone de la paroi de rigole externe et/ou du fond de rigole (42).
  6. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce que les tuyères de purge (27) orientées tangentiellement sont ajustées de sorte que leur sortie de tuyère débouchant dans la rigole de décharge (24) présente au moins une composante de direction de purge pointant dans le sens de la pente de la rigole de décharge (24).
  7. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il se forme entre une paroi de broyage (4) et le fond de broyage (5) à l'état abaissé une fente de décharge (23), en ce que d'autres tuyères de soufflage (28), dirigées en particulier radialement vers l'intérieur, sont ménagées dans le fond de décharge (12), notamment pour alimenter la fente de décharge (23), et en ce que les autres tuyères de purge (28), orientées en particulier radialement, débouchent dans un canal de ventilation (59), qui s'étend, notamment de manière ininterrompue ou fermée, dans la direction périphérique (U) de la rigole de décharge (24), le canal de ventilation (59) étant relié au moyen d'une fente (60) réduite en section transversale par rapport à ce dernier et s'étendant en particulier de manière annulaire dans la direction périphérique à une chambre de rigole de décharge (61) adjacente à la rigole de décharge (24).
  8. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce que la fente (60) s'étend de manière sensiblement perpendiculaire ou inclinée par rapport à un plan de référence sous-tendu par le fond de broyage (5) et en ce que l'extrémité de fente inférieure (62) est adjacente à la paroi de délimitation radialement externe (63) de la rigole de décharge (24) ou de la chambre de rigole de décharge (61), en particulier sur la zone de bord supérieure de la paroi de délimitation (63).
  9. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce que, par rapport à une section transversale de la rigole de décharge (24) située perpendiculairement à la direction périphérique (U), la sortie des tuyères de purge (27) orientées tangentiellement débouche à une distance verticale plus faible du fond de rigole (42) dans la rigole de décharge (24) que la sortie de fluide affectée aux tuyères de purge (28) orientées radialement, en particulier la sortie des tuyères de purge (27) orientées tangentiellement débouchant par rapport à la hauteur de la section transversale de rigole de décharge dans la moitié inférieure de la section transversale.
  10. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de décharge (25) est relié au moyen d'une ouverture (45) à la zone de fin de rigole (41) de la rigole de décharge (24), en particulier au point le plus bas du fond de rigole (42).
  11. Broyeur vibrant selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de décharge (25) est relié ou peut être relié au moins par moment à un dispositif de d'aspiration pour aspirer un fluide, en particulier de l'air.
  12. Procédé de nettoyage pour un broyeur vibrant, en particulier pour un broyeur vibrant à disques, avec une unité de broyage (2), dans lequel l'unité de broyage (2) comprend un bond de broyage (5) en particulier abaissable et un fond de décharge (12) et le fond de décharge présente une rigole de décharge périphérique (24) pour acheminer le matériau broyé vers ou à travers un élément de décharge (25), caractérisé en ce que la rigole de décharge (24) est nettoyée au moyen d'un fluide, en particulier au moyen d'air comprimé ou d'azote, et/ou par secouage, et en ce que le nettoyage au fluide s'effectue par purge du fond de décharge (12), en particulier de la rigole de décharge (24) et/ou de la fente de décharge (23) résultant de l'abaissement du fond de broyage (5) et par aspiration de préférence simultanée, en particulier de haut en bas.
  13. Procédé de nettoyage selon la revendication 12, caractérisé en ce que le fond de décharge (12), en particulier la rigole de décharge (24), est nettoyé(e) au moyen d'un tuyère de purge (27, 28) agencée sur le pourtour de la rigole de décharge (24) ou au moyen de plusieurs tuyères de décharge (27, 28) en positions réparties le long du pourtour de la rigole de décharge, dans lequel on utilise en particulier plusieurs tuyères de décharge (27, 28) qui sont agencées à distance dans la direction périphérique (U) de la rigole de décharge (24) de manière au moins approximativement régulière, en particulier de manière au moins approximativement égale.
  14. Procédé de nettoyage selon une ou plusieurs des revendications précédentes, caractérisé en ce que des tuyères de purge (27) orientées tangentiellement à la rigole de décharge (24) et des tuyères de purge (28) orientées radialement à la rigole de décharge (24) sont alimentées sous pression en même temps par un fluide, en particulier avec de l'air comprimé ou de l'azote.
  15. Procédé de nettoyage selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'on utilise un broyeur vibrant dont la rigole de décharge (24) se présente en pente vers l'élément de décharge (25).
  16. Procédé de nettoyage selon une ou plusieurs des revendications précédentes, caractérisé en ce que la rigole de décharge (24) est purgée au moyen de tuyères de purge (27) orientées tangentiellement à son pourtour dans sa direction de pente.
  17. Procédé de nettoyage selon une ou plusieurs des revendications précédentes, caractérisé en ce que la paroi de délimitation 63) radialement externe de la rigole de décharge (24) est nettoyée par soufflage de haut en bas avec un fluide, en particulier de l'air comprimé ou de l'azote, en particulier en utilisant des tuyères de purge (28) orientées radialement, qui débouchent notamment dans un canal de ventilation (59) s'étendant le long du pourtour de la rigole de décharge, qui est relié à la chambre (61) de la rigole de décharge au moyen d'une fente annulaire (60).
  18. Procédé de nettoyage selon une ou plusieurs des revendications précédentes, caractérisé en ce que le fluide est évacué de la rigole de décharge (24) à travers l'élément de décharge (25), dans lequel l'élément de décharge (25) est relié au moyen d'une ouverture (45) à la zone de fin de rigole (41) de la rrigole de décharge (24), en particulier au point le plus bas du fond de rigole (42).
  19. Procédé de nettoyage selon une ou plusieurs des revendications précédentes, caractérisé en ce que la quantité d'air évacuée est identique ou légèrement supérieure par unité de temps à la quantité d'air insufflée.
  20. Procédé de nettoyage selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'on utilise un broyeur vibrant selon une ou plusieurs des revendications concernant un broyeur vibrant.
EP08803949A 2007-09-14 2008-09-10 Broyeur vibrant et procédé de nettoyage de broyeurs vibrants Active EP2203254B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007043940 2007-09-14
DE102007057020 2007-11-27
DE102008035008A DE102008035008A1 (de) 2007-09-14 2008-07-25 Schwingmühle und Reinigungsverfahren für Schwingmühle
PCT/EP2008/061982 WO2009037160A1 (fr) 2007-09-14 2008-09-10 Broyeur vibrant et procédé de nettoyage de broyeurs vibrants

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EP2203254A1 EP2203254A1 (fr) 2010-07-07
EP2203254B1 true EP2203254B1 (fr) 2011-07-20

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AT (1) ATE516883T1 (fr)
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CN113289999A (zh) * 2021-05-08 2021-08-24 贵阳铝镁设计研究院有限公司 一种磨样盒清洁装置及其清洁方法

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BE791276A (fr) 1972-04-15 1973-03-01 Herzog Gottfried Concasseur oscillant pour broyer, homogeneiser et melanger des solides,produits chimiques et les produits dont ils decoulent
DE102007017131A1 (de) 2006-09-08 2008-03-27 PFAFF AQS GmbH automatische Qualitätskontrollsysteme Schwingmühle mit Gleitführung
DE102006042825A1 (de) 2006-09-08 2008-03-27 PFAFF AQS GmbH automatische Qualitätskontrollsysteme Mahleinheit mit Kühleinrichtung
DE102006042823A1 (de) 2006-09-08 2008-03-27 PFAFF AQS GmbH automatische Qualitätskontrollsysteme Schwingmühle und Verfahren zum Betrieb einer Schwingmühle

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WO2009037160A1 (fr) 2009-03-26
EP2203254A1 (fr) 2010-07-07
ATE516883T1 (de) 2011-08-15

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