EP0390809B2 - Dispositif de broyage - Google Patents

Dispositif de broyage Download PDF

Info

Publication number
EP0390809B2
EP0390809B2 EP88909979A EP88909979A EP0390809B2 EP 0390809 B2 EP0390809 B2 EP 0390809B2 EP 88909979 A EP88909979 A EP 88909979A EP 88909979 A EP88909979 A EP 88909979A EP 0390809 B2 EP0390809 B2 EP 0390809B2
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding device
chamber
storage container
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88909979A
Other languages
German (de)
English (en)
Other versions
EP0390809B1 (fr
EP0390809A1 (fr
Inventor
Hermann Getzmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6341759&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0390809(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT88909979T priority Critical patent/ATE102079T1/de
Publication of EP0390809A1 publication Critical patent/EP0390809A1/fr
Publication of EP0390809B1 publication Critical patent/EP0390809B1/fr
Application granted granted Critical
Publication of EP0390809B2 publication Critical patent/EP0390809B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge

Definitions

  • the invention relates to a grinding device, in particular for regrind in the form of flowable or pasty, non-flowable agglomerates, with a housing which has an inlet chamber, a grinding chamber for receiving grinding balls and an outlet, a rotatably mounted agitator body arranged in the grinding chamber and a drive for the agitator body as well as with a pneumatic conveyor and a storage vessel.
  • the inlet chamber is preceded by an open filling funnel, into which the material to be ground is fed in batches or continuously.
  • the regrind arrives in the inlet chamber, from which it is conveyed into the grinding chamber with the help of a screw conveyor and a centrifugal pump.
  • the screw conveyor, the centrifugal pump and the agitator body are on the same shaft and can therefore only be driven at the same speed. Since the speed of the agitator body is predefined within relatively narrow limits, only a grinding program can be carried out in the known grinding device, with which the most varied of grinding materials are treated with approximately the same dwell time.
  • Another disadvantage of the known grinding device is that due to the pump device downstream of the inlet chamber, for. B. a screw conveyor, lightly polluting parts within the grinder, which are difficult to clean when the device is to be switched to another grist. Finally, the known grinding device also has a considerable dead volume, so that not inconsiderable quantities of regrind remain in the grinding device after the grinding process has ended.
  • a grinding device with a grinding chamber, a rotatably mounted agitator body and a drive for the agitator body is already known from DE-A-12 12 825, the grinding chamber being connected upstream of a pump which is switched on in a feed for the millbase. Due to the pressure on the regrind generated by the pump, the conveyance of the regrind can be controlled independently of the speed of the agitator body. Nevertheless, the two other disadvantages mentioned above, namely the slight contamination or difficult cleaning of the parts and the existence of a considerable dead volume remain in the grinding device.
  • a rod mill in which the millbase from a dispersion tank with an agitator via a feed line and a pump of a grinding chamber in which a rotatable Agitator body is stored, is supplied.
  • the agitator body consists of a vertically arranged main shaft, on which rods extending radially outwards are arranged. Disks of large diameter are arranged between the bars, which come close to the walls of the grinding chamber and have the task of increasing the residence time of the material to be ground in the grinding chamber.
  • the invention is therefore based on the object of providing a grinding device of the type mentioned at the outset, with which the conveyance can be controlled in the simplest manner independently of the speed of the agitator body, simple cleaning of the parts within the grinding device and a minimal dead volume is made possible.
  • the solution to this problem is that the storage vessel is tightly closable and is arranged directly in front of the inlet chamber, the storage vessel being pressurized via a compressed air connection arranged thereon, so that the regrind can be pressed through the inlet chamber and the milling chamber to the outlet .
  • This solution is suitable for any regrind in the form of flowable or pasty, non-flowable agglomerates. It is used in particular when the conditions of a pneumatic connection are present.
  • the most varied of grinding programs can be carried out using the simplest of means, since the pressure device can be subjected to a wide variety of pressures regardless of the speed of the agitator body.
  • the respective program can be optimally adapted to the regrind to be treated.
  • a screw conveyor and a centrifugal pump downstream of the inlet chamber can be dispensed with, since the delivery can be carried out solely with the aid of the pressure device. This eliminates the lightly contaminating parts inside the grinder, which are difficult to clean when the device is to be switched to other regrind.
  • the construction according to the invention also has the advantage that only a minimal dead volume is present, so that even small and very small quantities of regrind can be processed with good yields.
  • the device according to the invention is eminently suitable for tasks in research, development and quality assurance.
  • the design principle according to the invention can be used particularly advantageously in laboratory machines, and very high yields can be achieved with a filling.
  • the air pressure can be set as desired, so that, depending on the quality of the ground material to be processed, the residence time of the ground material can be set without problems.
  • the top of the storage vessel is expediently provided with a filling opening which can be closed airtight with a lid.
  • the air pressure connection is preferably provided on the cover.
  • a pump device can be provided in the lower part of the storage vessel. Due to the arrangement of the pump device in the lower part of the storage vessel and the direct connection between the storage vessel and the inlet chamber, contamination of the grinding device upstream of the inlet chamber is largely prevented. The dead volume is also minimal, so that small and very small quantities of regrind can be processed with good yields.
  • the storage vessel of such a grinding device can preferably be provided with an air pressure connection.
  • the air pressure is then used when the ground material in the storage vessel has decreased to such an extent that it can no longer or no longer be adequately conveyed by the pump device. This is the case if the regrind is only in the part of the storage vessel below the pump device. In order to process the rest of this ground material, compressed air is then applied to the storage vessel.
  • This device is particularly useful when the regrind is to be processed in a multi-pass process.
  • the regrind is then allowed to pass through the device as often as desired via a return line, it being conveyed exclusively by the pump device.
  • the return flow is in the last grinding cycle switched off and the ground product removed from the outlet.
  • the regrind is conveyed via the pump device as long as the regrind is in the storage container above the pump device.
  • the remaining quantity of regrind is then conveyed out of the storage vessel, the inlet chamber and finally the milling chamber and the outlet with the aid of the compressed air introduced into the storage vessel via the air pressure connection. In this way, the dead volume is reduced to a minimum.
  • the drive motor of the pump device is expediently located above the storage vessel, so that the shaft for driving the pump device engages vertically from above into the storage vessel.
  • the storage vessel can have a filling opening on its upper side, which can be closed with a lid in which the shaft is mounted.
  • the pump device is preferably attached to the cover via a holding device, so that the cover together with the pump device can be removed for filling in the ground material or for cleaning purposes.
  • the pump device comprises a centrifugal pump.
  • the holding device can expediently have holding rods, the lower ends of which are connected to the cover by an annular housing plate for the centrifugal pump which is in a form-fitting manner against the inner wall of the storage vessel and whose upper ends are connected to the cover.
  • the distance between the support rods is expediently increased upwards in order to be able to mount larger stirring elements above the centrifugal pump.
  • who uses the two handrails Preferably who uses the two handrails.
  • an opening is preferably provided in the cover for inserting a return connection from the outlet of the grinding chamber or for inserting the air pressure connection.
  • the return port is inserted into the opening during the circulation process. This is then removed if the material to be ground is to be pumped out through the outlet in the last grinding run.
  • the air pressure connection is inserted into the opening and the remainder of the material to be ground is conveyed through the device with the aid of the compressed air.
  • a stirring device is preferably provided in the interior of the storage vessel. This prevents the ground material from settling on the wall of the storage vessel and thus improves the conveying of the ground material towards the pump device.
  • a dispersing device can also be provided in the interior of the storage vessel.
  • the stirring or dispersing device can expediently be driven by the same shaft with which the pump device is also driven.
  • the stirring device can have one or more propellers and the dispersing device can have one or more dissolver disks, depending on the regrind used.
  • the height of the propellers can be adjusted. Depending on the filling level and viscosity, this results in optimal mixing of the ground material. Due to the increased distance between the support rods for the housing plate of the centrifugal pump, larger agitators can be attached. This is useful in order to achieve a sufficiently large mixture at higher viscosities or lower speeds.
  • a throttle element is preferably arranged in the cross section of the outlet of the grinding chamber, so that a higher admission pressure can be used.
  • the throttle element is expediently designed as a perforated diaphragm which is simple in construction and easy to clean.
  • the pinhole can also be arranged interchangeably, so that pinhole plates with different hole sizes can be used for different grinding programs.
  • the outlet of the housing is preferably formed by a removable plug with a concentric longitudinal channel, the perforated diaphragm being fastened in or in front of the longitudinal channel.
  • the stopper which is expediently fastened rotatably in the housing, can have a transverse channel which intersects the longitudinal channel and is guided radially out of the stopper on one side. This enables versatile use, because by adjusting the stopper accordingly, the finished regrind can be dispensed in different directions as required.
  • a smooth cylindrical inner body can be arranged in the inlet chamber, which together with a cylindrical inner surface of the inlet chamber forms an annular gap which opens into the grinding chamber.
  • the inner body and the inner surface of the inlet chamber can form a dynamic friction gap at a short distance in front of the grinding chamber for separating the grinding chamber from the inlet chamber.
  • the inner body can be designed as a separate part. However, it can also be integrally formed on the agitator body. The latter embodiment allows simplified cleaning of the parts arranged in the grinding device. The possibility of cleaning can be further improved in that the inner body is integrally formed on a protective sleeve for the shaft arranged in the entrance area of the housing.
  • a grinding device is shown which is provided in particular for the laboratory and technical area.
  • the grinding device essentially consists of a housing 1 with an inlet chamber 2, a grinding chamber 3 and an outlet 4.
  • an agitator body 5 In the interior of the grinding chamber 3, which is essentially designed as a horizontally lying cylinder, an agitator body 5 is arranged, which is rotatably mounted about a horizontal axis.
  • the agitator body 5 sits on the shaft 6 of an electric motor 7, which is arranged on the side of the housing 1 opposite the outlet 4.
  • an electric motor 7 To connect the electric motor to the housing 1, the latter is provided on the side facing the electric motor 7 with a flange 8 with which the housing is screwed to the electric motor with the aid of screws 9.
  • the shaft 6 extends through an input region 10 of the housing 1, through the inlet chamber 2 and into the grinding chamber 3.
  • the shaft 6 is provided with a protective sleeve 11, which is fastened on the shaft 6 in a rotationally fixed manner by means of a dowel pin 12.
  • a protective sleeve 11 which is fastened on the shaft 6 in a rotationally fixed manner by means of a dowel pin 12.
  • two sealing rings 13 and 14 are arranged, which seal the shaft against the housing.
  • the inner sealing ring 14 lies with its side facing the inlet chamber 2 against an inner housing shoulder and is held on its other side by a flushing ring 15.
  • the flushing ring 15 is connected to the outside of the housing 1 via radial threaded bores 17.
  • the outer sealing ring 13 rests on the flushing ring 15 and is fixed on the outside by a locking ring 18.
  • a flushing liquid circuit can be connected to the threaded bores 17, which ensures an even better seal of the shaft 6 with respect to the housing 1. If no rinsing liquid is necessary, the threaded bores 17 can be closed with screws 16 and seals.
  • the protective sleeve 11 is adjoined by a smooth cylindrical inner body 19 over the area of the inlet chamber 2, followed by the agitator body 5 in the area of the grinding chamber 3.
  • the inner body 19 forms, together with a cylindrical inner surface of the inlet chamber 2, an annular gap 20 which opens into the grinding chamber 3.
  • the inner body 19 forms, together with the inner surface 1 of the inlet chamber 2 at a short distance in front of the grinding chamber 3, a dynamic friction gap 23 which serves to separate the grinding chamber 3 from the inlet chamber 2.
  • the agitator body 5 seated on the shaft 6 is essentially cylindrical and extends over almost the entire length of the grinding chamber 3.
  • the agitator body 5 is provided with a plurality of annular beads 24 arranged at intervals from one another, which improve the grinding effect.
  • three ring beads are provided, two at the front ends of the agitator body and one in the middle.
  • a countersunk screw 25 which is screwed into an end threaded bore 26 of the shaft 6 and with its head holds the agitator body 5 on the shaft, the agitator body 5 in the direction of the electric motor 7 via the Inner body 19 supports against the protective sleeve 11.
  • the grinding chamber 3 is filled with grinding balls, not shown in the drawing. These are filled into the grinding chamber 3 through an upper housing bore, which can be closed with the aid of an upper plug 27, and can be removed from the grinding chamber 3 through a lower housing bore, which can be closed with a lower plug 28.
  • the plugs 27 and 28 can be inserted tightly into the housing openings.
  • the housing 1 In the area of the grinding chamber 3, the housing 1 is surrounded at a distance by a concentrically arranged wall 29 which, together with the outer wall of the housing 1, forms an annular chamber 30 through which cooling water can be passed via water connections 31.
  • a spiral formed on the outer wall of the housing 1 and extending into the annular chamber 30 improves the cooling of the grinding chamber 3.
  • a cover 32 which tightly closes the grinding chamber 3 from the outside.
  • an outlet plug 33 which has a longitudinal channel 34 and a transverse channel 35 which intersects the longitudinal channel and is guided radially out of the plug 33 on one side.
  • the outlet plug 33 is rotatably mounted in the cover 32 and is held by means of a lock screw 36 which engages in a circumferential groove 37 of the plug 33.
  • the stopper 33 can be removed by loosening the counter screw.
  • a sieve 39 which delimits the grinding chamber 3 on the outlet side.
  • the inner end of the outlet plug 33 has a funnel-shaped extension 40 which opens into the longitudinal channel 34.
  • a perforated diaphragm 41 which is detachably and interchangeably fastened in the longitudinal channel 34 with the aid of a retaining ring 42.
  • a resistance thermocouple 43 which can be used for temperature measurements, is sealingly inserted into the outward-pointing end of the longitudinal channel 34.
  • a thermometer can also be used instead of a resistance thermocouple.
  • a hose nozzle 44 onto which an outlet pipe 45 is attached.
  • a hose can also be attached instead of an outlet pipe. Since the outlet plug 33 is rotatable, the regrind can, if desired, also be discharged downwards.
  • the embodiment of the grinding device shown in FIG. 1 is intended in particular for flowable regrind.
  • a feed vessel 46 which is placed on top and is held by a double nipple 47, is used to introduce the ground material into the inlet chamber 2.
  • the storage vessel 46 is provided on its upper side with a filling opening which can be closed with a lid 48.
  • the lid 48 can be held tightly on the storage vessel 46 with the aid of an annular gap connection 49.
  • the cover 48 is provided with a hose nozzle 50, to which a compressed air hose can be connected. Through the compressed air hose, the regrind in the storage vessel 46 is pressurized by which the regrind is pressed through the inlet chamber 2 into the grinding chamber 3 and from there through the sieve 39 and the perforated diaphragm 41 to the outlet pipe 45.
  • the residence time of the ground material in the grinding chamber 3 can be adjusted by varying the air pressure with which the storage vessel 46 is applied. Also through appropriate selection the pinhole 41, the residence time of the ground material can be adjusted.
  • the speed of the agitator body 5 can also be changed by appropriate control of the electric motor 7, regardless of the set residence time of the material to be ground in the grinding chamber.
  • the flow rate of the cooling water through the annular chamber 30 and the heat dissipation can be varied.
  • the design of the device as a closed system is particularly advantageous.
  • the regrind cannot evaporate from the storage container closed to the outside, so that the operator is not disturbed by harmful vapors.
  • a storage vessel 56 is used, in the lower region of which a centrifugal pump 57 is arranged.
  • the storage vessel 56 consists of two essentially cylindrical parts, an upper part of larger diameter and a lower part of smaller diameter, which are connected to one another by a conical part.
  • the drive motor for the centrifugal pump 57 is arranged above the storage vessel 56.
  • the shaft 58 for driving the centrifugal pump 57 reaches vertically into the reservoir 56 from above.
  • the shaft 58 is mounted in a cover 59, with which the serving for filling the ground material Opening at the top of the cylindrical storage vessel 56 is closable.
  • the bearing 60 is located within a shoulder 61 of the cover 59 which is concentric with the shaft 58 and points outward.
  • the bearing 60 is sealed against the interior of the storage vessel 56 by sealing rings 62 arranged axially next to one another.
  • the sealing rings 62 bear upward against radially inward projections of the sleeve-shaped shoulder 61 and are held from below by a holding disk 63 fastened to the cover 59.
  • the centrifugal pump 57 is fastened to the lower end of the shaft 58 with the aid of a countersunk screw 64 which is screwed into a threaded bore 65 formed in the lower end face of the shaft 58.
  • the centrifugal pump 57 has a housing plate 66 arranged on its top and partially encompassing its outside.
  • the housing plate 66 is fastened to the lid 59 of the storage vessel 56 via two holding rods 67.
  • the lower end of the support rods 67 is inserted into bores 68 provided for this purpose in the upper side of the housing plate 66 and glued to the latter.
  • the upper end of the support rods 67 is inserted into a bushing 69 and fastened in this by means of a threaded pin 70.
  • the bushings 69 are inserted into bores 71 provided for this purpose in the underside of the cover 59 and glued to the latter.
  • the housing plate 66 is annular and encloses the centrifugal pump 57 on the top and radial outside except for an annular gap 72 for the ground material to pass through. Its radial outside lies against the inner wall of the lower part of the storage vessel 56. Thus, the housing plate 66 attached to the cover 59 can be positively inserted together with the centrifugal pump 57 into the storage vessel 56.
  • the top of the housing plate 66 is slightly funnel-shaped to better convey the ground material into the annular gap 72.
  • the reservoir 56 has at its upper end a radially outward flange 73, on the top of which a corresponding flange 74 of the lid 59 can be brought into contact. With the help of a clamping ring 75 encompassing the flanges 73 and 74 on the outside, the cover 59 can be fastened on the storage vessel 56.
  • a propeller 76 is attached to the shaft 58 in the upper, wider part of the storage vessel 56 as a stirring element.
  • the holding rods 67 are bent outwards in accordance with the shape of the storage vessel 56 in its upper region. This allows larger agitators to be attached; this is necessary in order to achieve a sufficiently large mixture at higher viscosities or lower speeds.
  • the one with the centrifugal pump 57 rotating propeller 76 is used for thorough mixing of the ground material in the upper part of the storage vessel 56.
  • a dissolver disk 77 with tooth-shaped elements 79 pointing radially outward is also arranged on the shaft 58.
  • the dissolver disk 77 is attached to a bushing 78 which is fastened to the shaft 58 with the aid of a threaded pin 80. With the aid of the dissolver disk 77, a homogeneous distribution of the ground material in the space above the centrifugal pump 57 is achieved.
  • FIG. 3 shows the return connection 82, while in FIG. 4 the air pressure connection 83 is shown.
  • the jogging connection 82 is in the form of a hose which extends axially through the circular opening 81.
  • the hose leads through an annular sight glass disk 84.
  • the sight glass disk 84 which carries the return connection 82, is positively inserted into the opening 81 from above and is held at the lower end of the opening 81 by an annular flange 85 pointing radially inwards.
  • the return connection 82 is connected to the outlet of the grinding chamber 3, which are designed as in the exemplary embodiments shown in FIG. 1.
  • the return connection 32 Through the return connection 32, the product ground in one pass is returned to the storage vessel 56. In this way, the regrind can pass through the device as often as desired.
  • the connection between the return connection 82 and the outlet of the grinding chamber 3 is interrupted and the ground material is removed from the outlet.
  • the conveyance of the ground material with the aid of the centrifugal pump 57 is ended, however, when the quantity of ground material in the storage vessel 56 has passed more or less completely through the housing plate 66 of the centrifugal pump 57.
  • the remainder of the ground material remaining in the space below the centrifugal pump 57 in the storage vessel 56, in the inlet chamber 2 and in the grinding chamber 3 is then, as provided, pressed out of the device with compressed air.
  • the return connection 82 together with the sight glass 84 is removed from the opening 81 in the lid 59 of the storage vessel 56 and replaced by an air pressure connection 83.
  • the air pressure connection 83 is designed as a hose nozzle to which a compressed air hose can be connected.
  • the hose nozzle is arranged in an annular plug 86 and glued to it. The plug 86 is inserted with a seal into the opening 81 in the cover 59.
  • the storage vessel 56 As can be seen from FIGS. 2 and 3, the storage vessel 56, similar to the exemplary embodiment shown in FIG. 1, is placed on the inlet chamber 2 from above and attached to the housing 1.
  • An external thread 87 arranged at the lower end of the storage vessel 56 is used for fastening, which is screwed into a corresponding internal thread 88 inserted into the housing 1 above the inlet chamber 2 and sealed therein with the aid of a sealing ring.
  • the agitator body 5, the inner body 19 and the protective sleeve 11 are formed as one part. This one-piece design facilitates the cleaning of the parts arranged inside the device.

Abstract

Un dispositif de broyage, notamment pour agglomérés fluides ou pâteux, comprend un logement (1) avec une chambre d'admission (2), une chambre de broyage (3) qui reçoit des billes à broyer et une sortie (4). Un agitateur (5) rotatif entraîné par un moteur (7) est agencé dans la chambre de broyage. Afin de pouvoir aisément comander l'avancement des matières à broyer indépendamment de la vitesse de rotation de l'agitateur, un réservoir (46) agencé en amont de la chambre d'admission (2) et pouvant être hermétiquement fermé est pourvu d'un raccordement à air comprimé (Fig. 1). Alternativement, une pompe peut être montée dans le réservoir et le raccordement à air comprimé peut être sélectivement échangé par un raccordement de reflux.

Claims (23)

  1. Dispositif de broyage, en particulier pour des matières à moudre sous forme d'agglomérés fluides ou pâteux non fluides, comprenant un carter (1) qui comporte une chambre d'admission (2), une chambre de broyage (3) destinée à recevoir des boulets de broyage et une sortie (4), un corps agitateur (5) monté à rotation et disposé dans la chambre de broyage, et un mécanisme d'entraînement (7) pour le corps agitateur (5), ainsi qu'un transporteur pneumatique et un réservoir (46), caractérisé en ce que le réservoir (46) peut être fermé hermétiquement et est disposé directement en amont de la chambre d'admission (2), le réservoir (46) pouvant être mis sous pression par l'intermédiaire d'un raccord à air comprimé qui y est aménagé, de telle sorte que la matière à moudre puisse être refoulée à travers la chambre d'admission (2) et la chambre de broyage (3) jusqu'à la sortie (4).
  2. Dispositif de broyage selon la revendication 1, caractérisé en ce que le réservoir (46) présente, du côté supérieur, une ouverture de chargement qui peut être fermée de façon étanche à l'air par un couvercle (48).
  3. Dispositif de broyage selon la revendication 2, caractérisé en ce que le raccord à air comprimé (5) se trouve sur le couvercle (48).
  4. Dispositif de broyage selon la revendication 1, caractérisé en ce qu'un dispositif de pompage est prévu dans la partie inférieure du réservoir (56).
  5. Dispositif de broyage selon la revendication 4, caractérisé en ce que le moteur d'entraînement du dispositif de pompage se trouve au-dessus du réservoir (56) et l'arbre (58) pour l'entraînement du dispositif de pompage pénètre verticalement par le haut dans le réservoir (56).
  6. Dispositif de broyage selon la revendication 5, caractérisé en ce que le réservoir (56) présente, du côté supérieur, une ouverture de chargement qui peut être fermée par un couvercle (59) dans lequel l'arbre (58) est monté à rotation.
  7. Dispositif de broyage selon la revendication 6, caractérisé en ce que le dispositif de pompage est fixé au couvercle (59) par l'intermédiaire d'un dispositif porteur.
  8. Dispositif de broyage selon l'une quelconque des revendications 4 à 7, caractérisé en ce que le dispositif de pompage comprend une pompe centrifuge (57).
  9. Dispositif de broyage selon les revendications 7 et 8, caractérisé en ce que le dispositif porteur comporte des tiges porteuses (67) dont les extrémités inférieures sont fixées à une plaque-carter annulaire (66) pour la pompe centrifuge (57), qui s'applique par emboîtement sur la paroi interne du réservoir (56), et dont les extrémités supérieures sont fixées au couvercle (59), la distance mutuelle de ces tiges augmentant de bas en haut.
  10. Dispositif de broyage selon l'une quelconque des revendications 6 à 9, caractérisé en ce que le couvercle (59) présente une ouverture (81) pour l'insertion d'une conduite de retour (82) venant de la sortie (4) de la chambre de broyage (3) ou pour l'insertion du raccord à air comprimé (83).
  11. Dispositif de broyage selon l'une quelconque des revendications 4 à 10, caractérisé en ce qu'un dispositif agitateur est prévu à l'intérieur du réservoir (56).
  12. Dispositif de broyage selon l'une quelconque des revendications 4 à 11, caractérisé en ce qu'un dispositif de dispersion est prévu à l'intérieur du réservoir.
  13. Dispositif de broyage selon la revendication 11 ou 12, caractérisé en ce que le dispositif agitateur ou de dispersion peut être entraîné par l'arbre (58) qui entraîne le dispositif de pompage.
  14. Dispositif de broyage selon la revendication 13, caractérisé en ce que le dispositif agitateur comporte une ou plusieurs hélices (76) et le dispositif de dispersion comporte un ou plusieurs disques "Dissolver" (77).
  15. Dispositif de broyage selon l'une quelconque des revendications 1 à 14, caractérisé en ce qu'un organe d'étranglement est disposé dans la section de la sortie (4) de la chambre de broyage (3).
  16. Dispositif de broyage selon la revendication 15, caractérisé en ce que l'organe d'étranglement est réalisé sous forme d'obturateur perforé (41).
  17. Dispositif de broyage selon la revendication 16, caractérisé en ce que l'obturateur perforé (41) et remplaçable.
  18. Dispositif de broyage selon l'une quelconque des revendications 1 à 16, caractérisé en ce que la sortie (4) est constituée par un bouchon détachable (33) présentant un passage longitudinal coaxial (34), et en ce que l'obturateur perforé (41) peut être fixé dans ce passage longitudinal (34).
  19. Dispositif de broyage selon la revendication 18, caractérisé en ce que le bouchon d'évacuation (33) présente un passage transversal (35) qui coupe le passage longitudinal (34) et s'ouvre radialement à l'extérieur d'un côté du bouchon (33), et en ce que le bouchon (33) peut être fixé de façon orientable dans le carter.
  20. Dispositif de broyage selon l'une quelconque des revendications 1 à 19, caractérisé en ce qu'il est disposé, dans la chambre d'admission (2), un corps intérieur cylindrique lisse (19) qui forme, avec une surface interne cylindrique de la chambre d'admission (2), une fente annulaire (20) qui débouche dans la chambre de broyage (3).
  21. Dispositif de broyage selon la revendication 20, caractérisé en ce que le corps intérieur (19) et la surface interne de la chambre d'admission (2) forment, à courte distance avant la chambre de broyage (3), une fente à friction dynamique (23) pour séparer la chambre de broyage (3) de la chambre d'admission (2).
  22. Dispositif de broyage selon la revendication 20 ou 21, caractérisé en ce que le corps intérieur (19) est formé d'une seule pièce avec le corps agitateur (5).
  23. Dispositif de broyage selon la revendication 22, caractérisé en ce que le corps intérieur (19) est formé d'une seule pièce avec une douille protectrice (11) pour l'arbre (6), disposée dans la région d'entrée (10) du carter (1).
EP88909979A 1987-12-03 1988-11-09 Dispositif de broyage Expired - Lifetime EP0390809B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88909979T ATE102079T1 (de) 1987-12-03 1988-11-09 Mahlvorrichtung.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19873740898 DE3740898A1 (de) 1987-12-03 1987-12-03 Mahlvorrichtung
DE3740898 1987-12-03
PCT/DE1988/000695 WO1989005191A1 (fr) 1987-12-03 1988-11-09 Dispositif de broyage

Publications (3)

Publication Number Publication Date
EP0390809A1 EP0390809A1 (fr) 1990-10-10
EP0390809B1 EP0390809B1 (fr) 1994-03-02
EP0390809B2 true EP0390809B2 (fr) 1996-10-23

Family

ID=6341759

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88909979A Expired - Lifetime EP0390809B2 (fr) 1987-12-03 1988-11-09 Dispositif de broyage

Country Status (5)

Country Link
US (1) US5183215A (fr)
EP (1) EP0390809B2 (fr)
JP (1) JPH03501463A (fr)
DE (2) DE3740898A1 (fr)
WO (1) WO1989005191A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6431478B1 (en) 1999-06-01 2002-08-13 Elan Pharma International Limited Small-scale mill and method thereof
SE523973C2 (sv) 2002-06-28 2004-06-08 Foss Tecator Ab Anórdning och metod för provtagning, malning och provpresentation för analys
US20080259722A1 (en) * 2007-04-23 2008-10-23 Sanford Samuel A Blender for production of scented materials
DE102012013279A1 (de) * 2012-07-05 2014-01-09 Roland Nied Verfahren zum Betrieb einer Rührwerkskugelmühle sowie Rührwerkskugelmühle dafür
CN112087704B (zh) * 2020-09-29 2022-11-11 东强 一种防夹伤的麦克风外壳打磨设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US801854A (en) † 1904-01-14 1905-10-17 Nat Mica And Grinding Co Ltd Machine for grinding.
DE366425C (de) † 1923-01-04 Frantisek Kristl Kuechenschneidmaschine mit austauschbaren Einrichtungen zum Mahlen von Kaffee, Mohn,Korn u. dgl.
CH438223A (de) † 1964-10-10 1967-06-30 Spangenberg Maschf G Misch- und Dispergiermaschine
US3539116A (en) † 1966-07-27 1970-11-10 Henry L Podmore Vibratory grinding
DE2051003B1 (de) † 1970-10-16 1972-03-09 Fa. Michael Huber München, 8016 Heimstetten Rührwerksmühle
US3682399A (en) † 1969-03-25 1972-08-08 Vyzk Ustav Organ Syntez Apparatus for comminuting and dispersing solid particles
CH544583A (fr) † 1972-01-13 1974-01-15 Sicpa Internat S A Installation d'alimentation en masses pâteuses d'une machine travaillant ces masses
JPS6227266U (fr) † 1986-08-05 1987-02-19

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US458141A (en) 1891-08-18 Frank
GB1024053A (en) * 1962-11-01 1966-03-30 British Titan Products Treatment of particulate solids
US2621859A (en) * 1949-10-24 1952-12-16 Everett D Phillips Fluid swept ball mill with ball moving rotor and stationary drum
DE1212825B (de) * 1961-07-29 1966-03-17 Draiswerke Ges Mit Beschraenkt Mahlverfahren fuer Ruehrwerksmuehlen sowie Vorrichtungen dazu
FR1472184A (fr) * 1966-01-24 1967-03-10 Grenier Charvet Soc Broyeur à microbilles perfectionné pour produits pâteux
US3458144A (en) * 1967-04-17 1969-07-29 Mobil Oil Corp Attritor mill
DE2432860C2 (de) * 1974-07-09 1985-05-02 Draiswerke Gmbh, 6800 Mannheim Vorrichtung zum kontinuierlichen Dispergieren und Feinmahlen von Feststoffen in einem flüssigen Dispersionsmittel
GB1431620A (en) * 1973-08-11 1976-04-14 Draiswerke Gmbh Grinding mill
SU657848A1 (ru) * 1974-01-29 1979-04-25 Институт неорганической химии Сибирского отделения АН СССР Вибрационна мельница
SU689722A1 (ru) * 1978-03-30 1979-10-05 Государственный Научно-Исследовательский И Проектный Институт По Обогащению Руд Цветных Металлов Центробежна вертикальна мельница
ATE6210T1 (de) * 1979-02-21 1984-03-15 Eiger Engineering Limited Verbesserte vorrichtung zum mahlen, mischen oder dispergieren.
GB2077125B (en) * 1980-05-16 1984-10-24 Draiswerke Gmbh Apparatus for feeding flowable solids and liquids to treatment machines
DE3136323A1 (de) * 1981-09-12 1983-03-31 Boehringer Mannheim Gmbh, 6800 Mannheim Verfahren zum betreiben einer kugelmuehle und entsprechende kugelmuehle
DE3543190A1 (de) * 1985-12-06 1987-06-11 Buehler Ag Geb Vorrichtung zum kontinuierlichen dispergieren und feinmahlen von feststoffen
JPH0640970B2 (ja) * 1986-10-31 1994-06-01 コトブキ技研工業株式会社 粉砕機

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE366425C (de) † 1923-01-04 Frantisek Kristl Kuechenschneidmaschine mit austauschbaren Einrichtungen zum Mahlen von Kaffee, Mohn,Korn u. dgl.
US801854A (en) † 1904-01-14 1905-10-17 Nat Mica And Grinding Co Ltd Machine for grinding.
CH438223A (de) † 1964-10-10 1967-06-30 Spangenberg Maschf G Misch- und Dispergiermaschine
US3539116A (en) † 1966-07-27 1970-11-10 Henry L Podmore Vibratory grinding
US3682399A (en) † 1969-03-25 1972-08-08 Vyzk Ustav Organ Syntez Apparatus for comminuting and dispersing solid particles
DE2051003B1 (de) † 1970-10-16 1972-03-09 Fa. Michael Huber München, 8016 Heimstetten Rührwerksmühle
CH544583A (fr) † 1972-01-13 1974-01-15 Sicpa Internat S A Installation d'alimentation en masses pâteuses d'une machine travaillant ces masses
JPS6227266U (fr) † 1986-08-05 1987-02-19

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Prospekt "FERCHIM feed units" †
Prospekt NA128/01/02/03 "Hydraulische Behälterauspressvorrichtung" der Fa. Netzsch Newamatic GmbH und entsprechender Lieferschein Nr. 609.607/86 vom 29.09.1986 an die Wacker-Chemie GmbH †

Also Published As

Publication number Publication date
DE3740898A1 (de) 1989-07-06
US5183215A (en) 1993-02-02
EP0390809B1 (fr) 1994-03-02
EP0390809A1 (fr) 1990-10-10
JPH03501463A (ja) 1991-04-04
DE3888200D1 (de) 1994-04-07
WO1989005191A1 (fr) 1989-06-15

Similar Documents

Publication Publication Date Title
EP1287878A2 (fr) Appareil de traitement des materiaux
DE19504772C2 (de) Rühr-Schlagmühle
WO1992021436A1 (fr) Dispositif de dispersion, suspension ou emulsion de gaz, liquides et/ou matieres solides coulantes
DE2028336C3 (de) Vorrichtung zum Sieben wäßriger Aufschlämmungen, insbesondere Faserstoffaufschlämmungen
DE1102534B (de) Vorrichtung zum Mischen, Zerkleinern und gegebenenfalls Anfeuchten von pulverfoermigen, feinkoernigen oder faserigen Stoffen
EP0390809B2 (fr) Dispositif de broyage
DE3811910A1 (de) Muehle und verfahren zum gleichzeitigen mahlen und trocknen eines feuchten produkts
EP1126908B1 (fr) Dispositif de dispersion
DE3706002C2 (de) Vorrichtung zum Zerkleinern, Mischen, Kneten und Schlagen von Gut
AT253337B (de) Vorrichtung zum fortlaufenden Mahlen und Dispergieren von Feststoffen in Flüssigkeiten
DE4122680C2 (de) Rührwerksmühle
DE3333195A1 (de) Verfahren zum mischen und mischanordnung
EP2683487B1 (fr) Broyeur à billes agité
EP3953029B1 (fr) Procédé permettent de vider un dispositif de fabrication de granulats ou de produits extrudés
DE3131370A1 (de) Ruehrwerkskugelmuehle
DE4010926A1 (de) Ruehrwerksmuehle
DE2219352A1 (de) Kontinuierlich arbeitender ringmischer
EP3953028B1 (fr) Dispositif de fabrication de granulats ou de produits extrudés
CH536598A (de) Knetmaschine
EP3189889A1 (fr) Mélangeur et outil mélangeur
DE1249649B (fr)
DE854648C (de) Vorrichtung zum Homogenisieren und Mischen
DE3036280A1 (de) Ruehrwerksmuehle
DE1949297C (de) Vorrichtung zum Mischen von Flüssigkeiten
AT253647B (de) Kontinuierliches Verfahren und Vorrichtung zum Desagglomerieren und Dispergieren von feinteiligen Feststoffen in Flüssigkeiten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19900514

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

17Q First examination report despatched

Effective date: 19911129

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940302

REF Corresponds to:

Ref document number: 102079

Country of ref document: AT

Date of ref document: 19940315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3888200

Country of ref document: DE

Date of ref document: 19940407

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940415

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19941109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19941130

Ref country code: CH

Effective date: 19941130

Ref country code: BE

Effective date: 19941130

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: ERICH NETZSCH GMBH & CO HOLDING KG

Effective date: 19941202

NLR1 Nl: opposition has been filed with the epo

Opponent name: ERICH NETZSCH GMBH & CO HOLDING KG

BERE Be: lapsed

Owner name: GETZMANN HERMANN

Effective date: 19941130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 19961023

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH DE FR GB IT LI NL SE

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: AUFRECHTERHALTUNG DES PATENTES IN GEAENDERTER FORM

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)

Effective date: 19891224

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971010

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19971023

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981109

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051109