EP1945363B1 - Broyeur a boulets avec montage en deux points - Google Patents

Broyeur a boulets avec montage en deux points Download PDF

Info

Publication number
EP1945363B1
EP1945363B1 EP06806053.2A EP06806053A EP1945363B1 EP 1945363 B1 EP1945363 B1 EP 1945363B1 EP 06806053 A EP06806053 A EP 06806053A EP 1945363 B1 EP1945363 B1 EP 1945363B1
Authority
EP
European Patent Office
Prior art keywords
ball mill
grinding
bearing
mill according
support means
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.)
Active
Application number
EP06806053.2A
Other languages
German (de)
English (en)
Other versions
EP1945363A2 (fr
Inventor
Markus Bund
Wolfgang Mutter
Gerhard BÄR
Egbert Huwer
Hermann Michel
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.)
Fritsch GmbH
Original Assignee
Fritsch GmbH
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
Priority claimed from DE202006007801U external-priority patent/DE202006007801U1/de
Priority claimed from DE200620007800 external-priority patent/DE202006007800U1/de
Application filed by Fritsch GmbH filed Critical Fritsch GmbH
Publication of EP1945363A2 publication Critical patent/EP1945363A2/fr
Application granted granted Critical
Publication of EP1945363B1 publication Critical patent/EP1945363B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B02C17/04—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 with unperforated container
    • B02C17/08—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 with unperforated container with containers performing a planetary movement
    • 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
    • B02C17/181—Bearings specially adapted for tumbling mills
    • 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
    • B02C17/1815—Cooling or heating devices
    • 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
    • B02C17/182—Lids

Definitions

  • the invention relates to a ball mill, in particular a planetary or centrifugal ball mill on a laboratory scale.
  • grinding bowls are arranged eccentrically to a drive axis and move on a circular path.
  • the rotation of a grinding bowl around its own axis is prevented in centrifugal ball mills.
  • a built-sprocket, a gear ratio, a toothed belt, a rod guide, a Schmidt coupling or similar device can be used, which prevent the absolute rotation of the grinding bowl.
  • planetary ball mills are based on producing a combined orbital and rotary motion for grinding bowls.
  • a centrifugal force directed radially outwards is exerted on the grinding stock.
  • the drive of the grinding bowl in a planetary ball mill causes an absolute rotational movement of the grinding bowl about its own axis, the planetary axis, so that in a planetary ball mill compared to a centrifugal ball mill a significantly larger, further centrifugal component is generated. This is the centrifugal component superimposed, which is generated by the circulation of the grinding bowl to the center axis ..
  • the Coriolis force is effective.
  • the grinding action in a ball mill depends on various parameters, including the impact of the impact of the grinding balls on the material to be ground on the Mahlbecherinnenwand. Further influencing variables are the entire contact surface between the grinding stock and grinding balls or grinding bowl inner wall, the relative movement between the particles to be comminuted and the grinding balls or Mahlbecherinnenwand and the pressure that can be achieved between the mutually contacting surfaces of the ground material and the grinding balls or Mahlbecherinnenwand, as well as the frequency of the stresses of the ground material by contacts with the grinding balls, for example by impact of the balls on the material to be ground.
  • the grinding bowls are not self-rotated, a viewer, who assumes the position of the center axis, sees during one revolution of the grinding bowl carrying carrier device about the center axis once the outer jacket of the grinding bowl, while the grinding bowl with the carrier device surrounds the center axis.
  • the grinding bowls are not self-rotated, a viewer outside the mill will not perceive any rotation of the grinding bowls. Seen in the laboratory system, that is viewed from outside the mill, the grinding bowl always applies the same area of its outer shell to an observer, while it circles around the center axis with the carrier device.
  • planetary ball mills such as those according to the utility model DE 1 836 885 the applicant known.
  • a planetary ball mill which comprises planet carrier, on which grinding jars are fastened with a tensioning device.
  • the planetary carriers are mounted on the fly in a sun disk, which can be driven about a center axis.
  • the flying bearing leads at high speeds and thus high centrifugal forces to an enormous bending stress of the shaft of the planet carrier.
  • Planetary ball mills in which bearings of the grinding vessels in a bearing insert housing rotatably in a cover plate monitors and which are rotatable this bearing, show the documents JP-A-2002172342 and JP-A-2002172343 ,
  • the trajectories for the grinding balls characteristic of a planetary ball mill as described above are according to GB 730 494 but not generated.
  • the GB 730 494 described mill includes a grinding bowl, which is held in a cage by means of wedges.
  • the wedges are clamped by a spider with the help of screws between the wedge-shaped on his outer wall corresponding grinding bowl and the cage.
  • a lid for closing the Mahlbechers is clamped on the Mahlbecher with another screw.
  • the cage is mounted in a cylinder which is driven about a fixed axis, the center axis.
  • an attachment is mounted on the cylinder.
  • the attachment accommodates a roller bearing which engages around the cage projecting upwards beyond the cylinder in the region in which the spider and the actuating screws for fastening the wedges and the cover for the grinding bowl are arranged.
  • a disadvantage of the known ball mill on the one hand is that due to the small distance of the rotation axis of the grinding vessel to the axis of rotation of the cylinder of the centrifugal force by the rotation about the axis of rotation of the grinding vessel in a comparison at constant speeds only a small additional component by the centrifugal force due to the rotation is superposed on the axis of rotation of the cylinder.
  • By the arrangement according to GB 730 494 should be achieved in accordance with even a squeezing of the ground material in rolling on the Mahlbecherinnenwand grinding balls.
  • the storage of the cage in the integrally formed cylinder requires a separate structure on the cylinder to accommodate the roller bearing.
  • the production is complicated, since in particular the axial alignment of several items, namely the separate structure for receiving the roller bearing, the cage and the lower journal of the axle extension on the cage must be ensured.
  • the spider and the screws increased space requirements to secure the grinding vessel in the cage.
  • Another disadvantage is that the spider and projects out of the cross arm part of the screws over the cage, which brings with the rotation of the mill a risk of injury to the operator with it.
  • the invention provides a ball mill, in particular a planetary or centrifugal ball mill on a laboratory scale with a housing, a support device, the is rotatably mounted on the housing about a center axis, at least one receiving device for at least one grinding vessel which is rotatably supported about a receiving axis to the carrier device and is carried by the center axis, a drive for the carrier device, a drive for the receiving device at least one with grinding balls refillable grinding vessel comprising a grinding bowl and a lid for releasably closing the grinding bowl, wherein the grinding bowl is held in the receiving device when inserted into the receiving device, and at least a first and at least a second bearing means for rotatably supporting the at least one receiving device in the support device, wherein the bearing means are arranged at an axial distance from each other, so that the center of gravity of the grinding vessel is located between the bearing devices and the carrier device has a cover plate, in which the one of the storage facilities is sunk.
  • grinding balls it is within the scope of the invention to use arbitrarily shaped grinding media.
  • grinding balls in addition to the grinding balls mentioned above, in particular also barrel-shaped grinding media or grinding media with a polygonal profile come into consideration.
  • grinding balls is used in the following.
  • the holder of the grinding vessel in the receiving device is advantageously independent of closing the grinding bowl with the lid.
  • the grinding vessel is fastened in the receiving device via holding means, which between the Recording device and the grinding vessel, in particular between the receiving device and the grinding cup act.
  • the attachment of the grinding vessel in the receiving device is therefore, so to speak, "on the cup", so that external clamping devices are superfluous.
  • the load can be advantageously kept low by tilting moments relative to the receiving axis.
  • the bending stress relative to the planetary axis is significantly reduced compared to a flying bearing.
  • the storage takes place at least below the receiving device on journals, which adjoin the region of the receiving device, in which the grinding jar is used.
  • the invention allows the storage of the receiving device such that only the area of the receiving device is between the two camps, which receives the grinding vessel. Due to the uniformly large dimensions there are significantly reduced mechanical loads on transitions from large to much smaller diameter as at the transition from a Mahlbecherability to a journal of the receiving device.
  • the carrier device has a separate cover
  • the corresponding production of the cover is such that the bearing device can be sunk in the cover, in a simple manner possible, without any handling restrictions by other components of the support device would have to be accepted.
  • the invention relates in particular to mills on a laboratory scale. This means that the outer dimensions of the support device for the diameter in the range between 10 cm and 2 m and for the height in the range between 4 cm and 1 m move. Volumes for the grinding bowls can be in the range between 5 ml and 2 l, in particular between 12 ml and 1 l, in particular up to 500 ml.
  • the mill according to the invention may comprise at least two receiving devices.
  • the invention also relates to a mill with a receiving device and a counterweight, as described for example in the patent DE 197 12 905 C2 the applicant is described.
  • the mill can have a plurality of receiving devices, in particular arranged at the same angular distance between the individual receiving devices.
  • the receiving devices can be arranged with each other in an even number of receiving devices, for example, diametrically opposite in the carrier device.
  • Three receiving devices can be arranged, for example offset by 120 ° to each other.
  • the ball mill can at least a third and at least a fourth bearing means for rotatably supporting the carrier device on the housing, wherein the third and the fourth bearing means are arranged at an axial distance from each other, so that the center of gravity of the support device is in an axial position between the storage facilities.
  • between the storage facilities is to be understood to mean that the storage facilities have coordinates with respect to the center axis and also the center of gravity has a coordinate with respect to the center axis, wherein the coordinate of the center of gravity with respect to the center axis between the coordinates for the Bearing device is in relation to the center axis.
  • the receiving device is mounted via a two-point bearing in the support device, wherein the focus of the grinding vessel between the two camps and also the support device itself is mounted with a two-point storage, so that their focus lies between the two camps, the mechanical stress , Especially by occurring tilting moments in the region of the center axis and the receiving axes, advantageously low.
  • one of the bearing means for rotatably supporting the carrier device may be disposed on the housing in a position in the region of one of the bearing means of rotatable bearings of the receiving device in the carrier device and the other of the bearing means for rotatably supporting the carrier device on the housing in a position in Be arranged portion of the other bearing means for rotatably supporting the receiving device in the carrier device.
  • the bearings for the receiving device and the bearings for the support device are thus so mounted in relation to their coordinates in relation to the center axis substantially at matching positions. This means that the power is absorbed by the upper and lower bearings in each case essentially in one plane.
  • the bearings for the receiving device and the bearing for the support device are therefore arranged in a plane or one above the other, in particular directly above one another. This allows a very stable and compact design.
  • the storage for the receiving device and the storage for the carrier device can each comprise two bearings.
  • the upper bearing of the receiving device and the upper bearing of the support device are preferably arranged substantially in the same axial position "up" in the support device.
  • the lower bearing of the receiving device and the lower bearing of the support device are preferably arranged substantially in the same axial position "down" in the support device.
  • the distance D12 in the direction of the center axis between the first and second bearing means for rotatably supporting the receiving device in the carrier device substantially coincide with the distance D34 between the third and fourth bearing means for rotatably supporting the carrier device on the housing.
  • the axial distance D12 between the first and second bearing means for rotatably supporting the receiving device in the carrier device can in Range of 0.04 m to 0.5 m, in particular between 0.07 m and 0.3 m. Also, the axial distance between the third and fourth bearing means for rotatably supporting the carrier device on the housing may be in the range of 0.04 m to 0.5 m, in particular between 0.07 m and 0.3 m.
  • the invention further provides that the center axis preferably extends vertically.
  • the receiving axes are preferably arranged vertically.
  • the upper bearing means for rotatably supporting the receiving device in the carrier device may be arranged such that its upper limit is in a position in the region of the upper edge of the grinding vessel.
  • the upper bearing device for rotatably supporting the receiving device in the carrier device is sunk in the cover plate of the carrier device and protrudes no further than the upper edge of the grinding vessel out of the carrier device, the overall height of the overall construction with respect to the upper limit is reduced to a minimum.
  • the receiving device is preferably arranged in the carrier device, which is closed at the top by the cover, to be substantially sunk.
  • the grinding jar is positioned over the receiving device in the carrier device. That is, the grinding vessel is preferably arranged in the carrier device substantially sunk.
  • the total height H of the carrier device with inserted grinding vessel can advantageously be defined substantially by the distance D12 between the first and second bearing means for rotatably supporting the receiving device in the carrier device.
  • the height H of the carrier device measured from the lower boundary plane of the bottom plate to the upper boundary plane of the cover plate, may in particular assume values in the range from 0.04 m to 0.5 m.
  • the carrier device has an upper boundary plane for rotating parts of the ball mill, said upper boundary plane is substantially defined by the cover of the support device together with the upper boundary of the grinding vessel.
  • boundary plane is understood to mean a spatial area whose extent in a direction orthogonal to the center axis is substantially greater than its extent in a direction parallel to the center axis.
  • the support device with the receiving device sunk therein and the grinding vessel also recessed in the carrier device is designed pot-shaped according to the invention.
  • the invention thus provides a ball mill, in which the grinding jars can be arranged in a carrier device such that as a whole a flat, virtually disc-shaped body rotates about the center axis.
  • a load, in particular relative to the center axis by imbalances is thus almost impossible.
  • the load due to dynamic imbalance is particularly critical.
  • the storage according to the invention therefore brings particular advantages in particular for planetary ball mills.
  • the grinding vessel according to the invention comprises fastening means for releasably securing the lid to the grinding bowl.
  • the receiving device may comprise fastening means, in particular latching means for releasably securing the grinding vessel in the receiving device.
  • the fastening means of the receiving device and the fastening means of the grinding vessel can protrude beyond the upper boundary plane in the ball mill according to the invention. This achieves easy handling of the detachably mounted components of the mill. By gripping the fastening means of the grinding vessel projecting beyond the upper boundary plane, in particular the grinding vessel can be conveniently removed from the receiving device and inserted into it.
  • the first and the second bearing device for rotatably supporting the receiving device in the carrier device may comprise coaxial bearings.
  • at least one of the bearing devices can comprise a plurality of bearings.
  • the upper bearing device may comprise a plurality of bearings, in a particularly preferred embodiment at least two bearings arranged on the circumference of the receiving device as viewed from the center axis.
  • the receiving device is not spanned along its entire circumference of a bearing, but the bearing size can be advantageously reduced in that several bearings such are arranged so that they each have a common tangent to the outer periphery of the receiving device.
  • the relevant term of the "roller block" For a corresponding arrangement with two bearings on the circumference of the receiving device exists on the relevant field of ball mills the relevant term of the "roller block".
  • the individual bearings are preferably designed as ball bearings.
  • the carrier device of the ball mill according to the invention may further comprise a bottom plate.
  • the bottom plate may be formed as a drive pulley for driving the carrier device.
  • the cover may be formed as a drive pulley for driving the support device.
  • the drive can be designed in particular via a belt drive, for example via a drive of the drive pulley via a V-belt, which is set in motion by a motor and kept in motion.
  • the invention provides that the drive of the carrier device can be coupled to the drive of the receiving device.
  • a Unter% translation of a pinion, which is in communication with the carrier device, on a pinion, which is in communication with the receiving device, via a toothed belt drives the receiving device.
  • the lower or gear ratio can be specified, so that in.
  • the receiving device may comprise an extension which is arranged in an opening of the bottom disk, when the receiving device is arranged in the bottom disk.
  • the extension of the receiving device protrudes through the bottom plate.
  • the receiving device may be stored with the first bearing means in the carrier device.
  • the bottom plate and / or the cover plate of the carrier device is designed as a flywheel in order to be able to compensate for possible fluctuations in the kinetic energy of the rotation of the receiving device and / or the circulation of the carrier device via its inertia.
  • one of the bearing devices for rotatably supporting the receiving device in the carrier device and one of the bearing devices for rotatably supporting the carrier device may be arranged on the housing in the region of the bottom plate.
  • the said storage facilities can be recessed in the bottom plate. Except that the bottom plate essentially assumes the function of the lower end of the support device, it thus serves as a support for said storage facilities, so that advantageously additional components that would allow the attachment of the corresponding storage facilities, can be dispensed with.
  • one of the bearing means for rotatably supporting the receiving device in the carrier device and one of Storage facilities for rotatably supporting the carrier device are arranged on the housing in the region of the cover.
  • the said storage facilities can be arranged countersunk in the cover.
  • the bottom disk and the upper cover disk may comprise openings which correspond to one another and are positioned such that at least one bearing device can be arranged in an opening of the cover disk and at least one bearing device in a corresponding opening of the bottom disk.
  • the bottom plate is rigidly connected to the cover plate.
  • the support device may also have a jacket element, in particular an annular jacket element.
  • the jacket element can rigidly connect the bottom plate to the upper cover plate.
  • the sheath element may comprise at least one plastic, so that its contribution to the total weight can be kept vorörhafterhaft overall low.
  • a plastic jacket can be manufactured in particular inexpensively by deep drawing.
  • the ball mill according to the invention can be operated with a drive power of 0.2 kW to 20 kW.
  • the rotational speed for the rotation of the carrier about the center axis may be as high as 3000 l / min at input speeds ranging from 50 l / min to 100 l / min. Values of up to 6000 l / min. Relative to the carrier device can be selected for the rotational speed of the receiving device during its rotation about the receiving axis.
  • a cooling device for active cooling of the grinding vessels said Each grinding station is supplied separately with a cooling medium.
  • the cooling device first guides the cooling medium onto the rotating support device and from there separately to each of the grinding stations.
  • the grinding stations comprise cooling channels which extend at least partially in the receiving device and through which the cooling medium is passed in order to purposefully cool the grinding bowl during the rotation of the carrier device.
  • this can dissipate the heat produced, inter alia, by the grinding process in the grinding vessel.
  • the grinding vessel has a temperature sensor which transmits temperature data to the control device of the ball mill, wherein the cooling can even be regulated by means of these temperature data.
  • Cooling prevents the jar from overheating, offering advantages in terms of durability and user safety.
  • the ball mill can be operated at higher speeds due to the improved heat dissipation.
  • the cooling channels preferably run at least partially within the bottom and / or the annular wall of the receiving cup. Furthermore, there are gaps between the grinding bowl and the receiving cup and the cooling channels within the bottom or the annular wall of the Receiving cup open into these spaces open, so that the cooling medium is passed through the intermediate spaces directly on the outer surface of the grinding bowl, in particular along its annular wall. In other words, the gaps form part of the cooling channels. This ensures effective cooling of the grinding bowl.
  • first bores are provided in the bottom of the receiving cup, which open into the intermediate space between the Mahlbecher convinced and the bottom of the receiving cup.
  • the space between the grinding bowl and the receiving cup is divided at least into a lower first and an upper second gap, wherein the lower gap is disposed below the Mahlbecher convinced and the upper space around the annular wall of the Mahlbechers.
  • the upper intermediate space comprises a first non-circumferential, in particular butterfly-like milled lower portion and a second circumferential upper ring portion. At the support points of the lower portion locking means for locking the grinding bowl are arranged in the receiving cup.
  • the grinding bowl is taken in the upper region slightly below the lid in a hardened ring mount in the receiving cup radially fit. Therefore, bores in the annular wall of the receiving cup extend outside the annular socket to guide the cooling medium therearound. The cooling medium finally flows upwards out of these bores into the atmosphere, ie altogether from bottom to top, at least partially along the grinding bowl outer wall.
  • the feeding of the cooling medium into the grinding station is preferably accomplished as follows.
  • the center axis is hollow-drilled and has one or more transverse bores approximately at the level of the cup bottom in order to guide the cooling medium through the hollow axis to the carrier device.
  • a distributor plate Arranged around the center axis, attached to the carrier device, is a distributor plate which for each grinding station has a radially extending connecting channel which connects an annular space about the center axis with the cooling channels of the respective grinding stations.
  • the cooling medium is preferably introduced centrally from below into the fixed center axis, flows from there through the transverse bores in the annular space, further through the radial connecting channels in the annular first space below the Mahlbecher convinced, from there upwards along the Mahlbecher through the butterfly-like lower portion of the second space, then in the peripheral portion, from there into the bores for bypassing the ring socket and from the upper opening in the Mahlbecherdeckels in the atmosphere.
  • a cooling medium therefore preferably a compressed gas is used, most easily compressed air.
  • it may be useful to mix liquid nitrogen or liquid air into the compressed air or to use liquid nitrogen or liquid air. Since they evaporate immediately at room temperature is still spoken of a gaseous cooling medium.
  • FIG. 1 In the representation of the ball mill according to the invention in FIG. 1 is an eruption of a housing 8 to see on which the support device 1 is rotatably mounted about a center axis 15.
  • the ball mill further has a drive 17 for the carrier device.
  • a motor drives a V-belt, which meshes with the bottom disk 6 of the carrier device 1.
  • the ball mill has a drive 27 for receiving devices 2, via which the receiving devices can be set in rotation around the receiving axes 25.
  • a toothed belt via appropriately sized pinion transmits the rotation of the carrier device to the Receiving devices 2, wherein an over- or reduction can take place.
  • in the context of the invention in principle also the possibility of reversing the direction of rotation.
  • the carrier device 1 further comprises a cover plate 4 and a jacket element 7.
  • the cover plate is a solid plate which has a thickness of about 3 cm and is made of metal.
  • the heavy round cover fulfills next to the upper end of the support device and the function of a flywheel, which absorbs deviations of each given at a time value for the torque of the average torque, which is determined by integrating the total torque over a circuit, so that the Nonuniformity of the rotational movement remains as low as possible.
  • the upper boundary plane 10 for rotating parts of the ball mill is essentially defined by the cover 4 together with the upper boundary of the grinding vessel 5.
  • the housing 8, the mantle element 7 and the motor with the drive for the V-belt are not shown.
  • the upper boundary plane 10 for rotating parts of the ball mill which is essentially defined by the cover 4 together with the upper boundary of the grinding vessel 5.
  • the otherwise massive cover 4 has openings 45, are sunk by the receiving devices 2 in the interior of the support device 1 inside.
  • the grinding vessel 5 is also sunk through the opening 45 in the cover 4 into the interior of the support device 1, wherein the grinding vessel 5 is inserted into the receiving device 2.
  • a receiving device 2 is mounted with a first bearing device 31 and a second bearing device 32. rotatably about a receiving axis 25 in the carrier device 1.
  • the upper bearing device 32 is sunk in the massive cover 4.
  • the first, lower bearing device 31 is arranged in the bottom disk 6.
  • the second, upper bearing device 32 is arranged in an opening 45 in the cover 4.
  • the cover 4 has for this purpose a thickness which is greater than the height of the bearing means 32.
  • the second, upper bearing means 32 is therefore embedded in the cover 4.
  • the bottom disk 6 Coaxially with the opening 45, the bottom disk 6 has an opening 65, in which the first, lower bearing device 31 is arranged.
  • the bottom disk 6 has for this purpose a thickness which is greater than the height of the bearing means 31.
  • the first, lower bearing means 31 is therefore embedded in the bottom disk 6.
  • the vertical distance between the first bearing means 31 and the second bearing means 32 is indicated by D12.
  • the receiving device 2 is formed in one piece and comprises an upper, a space for receiving the grinding vessel 5 forming region and a lower, an axis extension about the receiving axis forming region.
  • the upper, a space for receiving the grinding vessel 5 forming area is cup-shaped and has an inner contour which is adapted to the outer shape of the grinding vessel 5.
  • This upper, a space for receiving the grinding vessel 5 forming area has a bottom and a at the bottom subsequent annular side wall. The side wall is substantially completely closed. As a result, a substantially full-surface contact of the lateral surface 55 of the grinding vessel 5 with the inner wall of the receiving device 2 is made possible.
  • the axle extension of the receiving device 2 is hollow in the illustrated embodiment.
  • the axle extension can do this, as in FIG. 2 shown to have a through hole.
  • the invention is also to be realized with an axle extension, which includes a blind hole.
  • An ejector pin 28 for the grinding vessel 5 is held in the hollow axle extension of the receiving device 2.
  • the axle extension of the receiving device can be made massive.
  • the ejector pin 28 is biased upon insertion of the grinding vessel 5 by means of a spring, not shown.
  • the ejector pin 28 has an inwardly to the receiving axis 25 in the direction of the projecting shoulder, which defines an upper seat for the spring.
  • a lower seat for the spring is formed by the lower closure disc, which is connected to the hollow axle extension of the receiving device 2.
  • the grinding vessel 5 in the receiving device 2 of the ejector pin 28 When inserting the grinding vessel 5 in the receiving device 2 of the ejector pin 28 is pressed through the bottom of the grinding vessel 5 down, into the hollow axle extension of the receiving device 2. In this position, the grinding vessel 5 is secured in the receiving device 2 by latching. The spring is compressed. If the attachment of the grinding vessel 5 in the Detached receiving device 2, the spring relaxes and pushes the ejector pin 28 upwards so that it moves the grinding vessel 5 with upward.
  • the carrier device itself is rotatably mounted about the center axis 15 via a third bearing device 33 and a fourth bearing device 34.
  • the third bearing device 33 is arranged in the bottom disk 6.
  • the thickness of the bottom disk 6 is greater than the height of the bearing device 33.
  • the third bearing device 33 is therefore embedded in the bottom plate 6 together with the first bearing device 31.
  • the fourth bearing device 34 is arranged via a retaining flange in the region of the cover disk 4.
  • the fourth bearing means 34 may also be arranged in the cover 4, without a retaining flange is provided.
  • the mill according to the invention can therefore also be designed such that the fourth bearing means 34 is embedded together with the second bearing means 32 in the cover plate 4.
  • the vertical distance between the third bearing means and the fourth bearing means 33 and 34 is indicated by D34.
  • the distance D34 substantially coincides with the distance D12 between the first bearing device 31 and the second bearing device 32.
  • FIG. 3 shows a schematic representation of the area around the receiving device 2 according to an arrangement according to another embodiment.
  • the receiving device 2 is arranged rotationally symmetrical to the receiving axis 25.
  • the receiving device 2 is mounted in a first storage device 31.
  • the storage device 31 comprises a coaxial with the receiving device 2 arranged around the receiving axis 25 bearing.
  • the second bearing device 32 comprises two bearings 325 and 322, which support the receiving device 2 at its periphery.
  • the bearings 322 and 325 are ball bearings with a significantly smaller diameter than the receiving device 2.
  • the bearings 322 and 325 and the receiving device 2 are not arranged coaxially with one another. However, each of the bearings 322 and 325 has a common tangent to the receiving device 2.
  • the two bearings 322 and 325 are arranged on the side facing away from the center axis 15 side of the receiving device 2 in order to accommodate the higher because of the centrifugal forces there can.
  • FIG. 3 schematically shown embodiment of the invention is not limited to the use of two bearings, but it can also be arranged less or more bearings on the circumference of the receiving device.
  • the recessed arrangement of the grinding vessel in the receiving device which is made possible by the bearing arrangement according to the invention, creates by the compact design the conditions for operating the ball mill with very high speeds.
  • increased demands on the strength of the grinding vessel and receiving device are connected.
  • FIG. 4 is a schematic representation of such a recording device shown with socket, wherein in FIG. 4A the cradle alone and in FIG. 4B the receiving device is shown with inserted grinding vessel.
  • the receiving device 2 is held between the upper bearing 32 and the lower bearing 31. It has as a version for the grinding vessel in the embodiment shown, a ring member 26 which is attached to the inner side wall of the receiving device 2. Furthermore, the receiving device 2 comprises a bottom element 261 as a further component acting as a socket. The bottom element 261 simultaneously acts as a centering device for the central positioning of the grinding vessel in the ring element 26.
  • FIG. 4B is the in FIG. 4A shown receiving device 2 shown with inserted grinding vessel 5.
  • the side wall 55 of the grinding vessel 5 abuts the holder 26, so that the grinding vessel 5 is held radially substantially by the socket 26 in the receiving device 2.
  • the grinding vessel 5 also on holding means. These are designed as a ring element 561, which surround the bottom element 261 of the receiving device 2.
  • the holding means 26 and 261 are preferably hardened.
  • the ring element 26 and / or the bottom element 261 is hard-coated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Claims (25)

  1. Broyeur à boulets planétaire ou centrifuge à l'échelle du laboratoire,
    comprenant
    un carter,
    un dispositif de support (1) qui est monté sur le carter avec possibilité de rotation autour d'un axe central (15),
    au moins un dispositif de réception (2) pour au moins un récipient de broyage (5), qui est monté de manière à pouvoir tourner autour d'un axe de réception (25), par rapport au dispositif de support (1), et est entraîné par celui-ci autour de l'axe central (15),
    un entraînement (17) pour le dispositif de support,
    un entraînement (27) pour le dispositif de réception,
    au moins un récipient de broyage (5) qui peut être rempli avec des boulets de broyage et comprend un bol de broyage et un couvercle destiné à la fermeture libérable du bol de broyage, le récipient de broyage étant tenu dans le dispositif de réception (2) lorsqu'il est inséré dans le dispositif de réception, et comprenant
    un premier et un deuxième dispositif de montage (31, 32) destinés au montage tournant du dispositif de réception (2) dans le dispositif de support (1), sachant que
    les dispositifs de montage (31, 32) sont placés à distance axiale l'un de l'autre, de sorte que le centre de gravité du récipient de broyage (5) se trouve entre les dispositifs de montage (31, 32), et
    le dispositif de support (1) présente un disque de recouvrement (4) dans lequel est encastré l'un des dispositifs de montage (31, 32).
  2. Broyeur à boulets selon la revendication 1, caractérisé en ce que
    le broyeur à boulets présente un troisième et un quatrième dispositif de montage (33, 34) destinés au montage tournant du dispositif de support (1) sur le carter,
    le troisième et le quatrième dispositif de montage (33, 34) étant placés à distance axiale l'un de l'autre, de manière à ce que le centre de gravité du dispositif de support (1) se trouve entre les dispositifs de montage (33, 34).
  3. Broyeur à boulets selon la revendication 2, caractérisé en ce que
    l'un des dispositifs de montage (33, 34), destinés au montage tournant du dispositif de support (1) sur le carter, est placé dans une position axiale dans la région de l'un des dispositifs de montage (31, 32) destinés au montage tournant du dispositif de réception (2) dans le dispositif de support (1), et
    l'autre des dispositifs de montage (34, 33), destinés au montage tournant du dispositif de support (1) sur le carter, est placé dans une position axiale dans la région de l'autre dispositif de montage (32, 31) destiné au montage tournant du dispositif de réception (2) dans le dispositif de support (1).
  4. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    la distance axiale (D12) entre les premier et deuxième dispositifs de montage (31, 32), destinés au montage tournant du dispositif de réception (2) dans le dispositif de support (1)
    correspond sensiblement à la distance axiale (D34) entre les troisième et quatrième dispositifs de montage (33, 34) destinés au montage tournant du dispositif de support (1) sur le carter.
  5. Broyeur à boulets selon la revendication 1, caractérisé en ce que
    l'axe central (15) s'étend verticalement.
  6. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le dispositif de montage (32) supérieur, destiné au montage tournant du dispositif de réception (2) dans le dispositif de support (1), est positionné de manière telle que sa délimitation supérieure se trouve axialement dans une position située dans la région de la position du bord supérieur du récipient de broyage (5).
  7. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le dispositif de réception (2) est placé dans le dispositif de support (1) en étant sensiblement encastré.
  8. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le récipient de broyage (5) est placé dans le dispositif de support (1) en étant sensiblement encastré.
  9. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    la hauteur (H) totale du dispositif de support (1), avec le récipient de broyage (5) inséré,
    est définie sensiblement par la distance (D12) entre le premier et le deuxième dispositif de montage (31, 32) destiné au montage tournant du dispositif de réception (2) dans le dispositif de support (1).
  10. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le dispositif de support (1) présente un plan de délimitation (10) supérieur pour des éléments rotatifs du broyeur à boulets,
    sachant que ce plan de délimitation (10) supérieur est défini essentiellement par le disque de recouvrement (4) du dispositif de support (1), conjointement avec la délimitation supérieure du récipient de broyage (5).
  11. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le récipient de broyage présente des moyens de fixation destinés à la fixation séparable du couvercle au bol de broyage, et
    le dispositif de réception présente des moyens de fixation destinés à la fixation séparable du récipient de broyage dans le dispositif de réception,
    les moyens de fixation du dispositif de réception et les moyens de fixation du récipient de broyage dépassant par rapport au plan de délimitation supérieur.
  12. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    les premier et deuxième dispositifs de montage (31, 32) comportent des paliers coaxiaux l'un avec l'autre.
  13. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    au moins un des dispositifs de montage (31, 32, 33, 34) comporte plusieurs paliers.
  14. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le dispositif de montage (32) supérieur, destiné au montage tournant du dispositif de réception (2) dans le dispositif de support (1), comporte plusieurs paliers.
  15. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    au moins un des dispositifs de montage (31, 32, 33, 34) comporte au moins un roulement à billes.
  16. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le dispositif de support (1) comporte un disque de fond (6) parallèle au disque de recouvrement 4.
  17. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le disque de fond (6) est réalisé comme disque d'entraînement.
  18. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le disque de fond (6) et/ou le disque de recouvrement (4) est réalisé comme volant.
  19. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    l'un des dispositifs de montage (31, 32), destiné au montage tournant du dispositif de réception (2) dans le dispositif de support (1), et
    l'un des dispositifs de montage (33, 34), destiné au montage tournant du dispositif de support (1) sur le carter,
    sont placés dans la région du disque de fond (6) .
  20. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    l'un des dispositifs de montage (31, 32), destiné au montage tournant du dispositif de réception (2) dans le dispositif de support (1), et
    l'un des dispositifs de montage (33, 34), destiné au montage tournant du dispositif de support (1) sur le carter,
    sont placés dans la région du disque de recouvrement (4).
  21. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le disque de fond (6) et le disque de recouvrement (4) supérieur comportent des ouvertures (65, 45) correspondant l'une à l'autre,
    qui sont positionnées de manière telle qu'au moins un dispositif de montage puisse être placé dans une ouverture (45) du disque de recouvrement (4), et au moins un dispositif de montage puisse être placé dans une ouverture (65) du disque de fond (6).
  22. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le disque de fond (6) est relié de façon rigide au disque de recouvrement (4).
  23. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le dispositif de support (1) présente un élément enveloppe (7).
  24. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    l'élément enveloppe (7) relie le disque de fond (6) de façon rigide au disque de recouvrement (4) supérieur.
  25. Broyeur à boulets selon l'une des revendications précédentes, caractérisé en ce que
    le broyeur à boulets présente un dispositif de refroidissement qui dirige un fluide de refroidissement sur le dispositif de support tournant lors du fonctionnement, et l'achemine au poste de broyage, au nombre d'au moins un, afin d'évacuer des récipients de broyage la chaleur produite lors de l'opération de broyage.
EP06806053.2A 2005-10-07 2006-10-05 Broyeur a boulets avec montage en deux points Active EP1945363B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202005015897 2005-10-07
DE202006007801U DE202006007801U1 (de) 2005-10-07 2006-05-13 Kugelmühle mit Zweipunktlagerung
DE200620007800 DE202006007800U1 (de) 2006-05-13 2006-05-13 Kugelmühle mit Kühlung
PCT/EP2006/009641 WO2007042201A2 (fr) 2005-10-07 2006-10-05 Broyeur a boulets avec montage en deux points

Publications (2)

Publication Number Publication Date
EP1945363A2 EP1945363A2 (fr) 2008-07-23
EP1945363B1 true EP1945363B1 (fr) 2016-07-06

Family

ID=37496628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06806053.2A Active EP1945363B1 (fr) 2005-10-07 2006-10-05 Broyeur a boulets avec montage en deux points

Country Status (2)

Country Link
EP (1) EP1945363B1 (fr)
WO (1) WO2007042201A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012007530B4 (de) 2012-04-17 2017-05-11 Fritsch Gmbh Mahlgefäß für eine Labormühle
DE102012009987B4 (de) 2012-05-22 2023-02-23 Fritsch Gmbh Laborkugelmühle
DE102012009982A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
DE102012009984A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
DE102012009985A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
DE102012009983A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Kugelmühle mit automatisch verstellbarer Ausgleichsmasse
CN111074396B (zh) * 2019-12-19 2021-03-16 界首市华宇纺织有限公司 一种具有抗菌防臭的珍珠抗菌纱制备方法
CN111728171A (zh) * 2020-07-11 2020-10-02 山东鲁海食品有限公司 一种焦糖果味酱及其制备方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29724830U1 (de) * 1997-03-27 2004-08-05 Fritsch GmbH Laborgerätebau Planetenkugelmühle
JP4050455B2 (ja) * 2000-12-05 2008-02-20 住友重機械テクノフォート株式会社 大容量竪型ボールミルの潤滑装置
JP4006177B2 (ja) * 2000-12-05 2007-11-14 住友重機械テクノフォート株式会社 大容量竪型ボールミル

Also Published As

Publication number Publication date
WO2007042201A2 (fr) 2007-04-19
WO2007042201A3 (fr) 2007-07-19
EP1945363A2 (fr) 2008-07-23

Similar Documents

Publication Publication Date Title
EP1945363B1 (fr) Broyeur a boulets avec montage en deux points
DE102012009987B4 (de) Laborkugelmühle
DE102008064815B3 (de) Spindelmotor mit fluiddynamischem Lagersystem und feststehender WeIle
DE10124265B4 (de) Pumpe
DE102006047498A1 (de) Kugelmühle mit Kühlung
EP1933985B1 (fr) Broyeur a boulets pourvu de moyens d'encliquetage
EP2057299B1 (fr) Dispositif et procédé pour retourner un objet dans une installation de revêtement sous vide, et leur utilisation
EP3540229B1 (fr) Compresseur à spirales
EP2358467A1 (fr) Mélangeur doté d'un récipient de mélange rotatif
DE102012009984A1 (de) Laborkugelmühle
DE102012009982A1 (de) Laborkugelmühle
EP2800922B1 (fr) Érogateur de graisse
DE102012009985A1 (de) Laborkugelmühle
EP3323717B1 (fr) Mât rotor
DE102012013199A1 (de) Elektromotor / Generator in scheibenförmiger Bauart
DE202019106603U1 (de) Kugelmühle
WO2018029211A1 (fr) Différentiel comprenant un dispositif de freinage
EP1812710B1 (fr) Entrainement oscillant
EP3488971A1 (fr) Dispositif de pivotement électrique
DE202012104378U1 (de) Vorrichtung zum Zerkleinern von Substrat und Gehäusewandung für eine solche Vorrichtung
DE202022003064U1 (de) Planetenmühle
DE10124267B4 (de) Hydraulisches Pressgerät
DE202006007801U1 (de) Kugelmühle mit Zweipunktlagerung
DE102005057228B4 (de) Umlaufrührvorrichtung
DE102019132135A1 (de) Kugelmühle

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: 20080331

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 20090603

DAX Request for extension of the european patent (deleted)
R17C First examination report despatched (corrected)

Effective date: 20090603

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160202

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502006015030

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502006015030

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170407

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

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

Ref country code: GB

Payment date: 20231025

Year of fee payment: 18

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

Ref country code: FR

Payment date: 20231023

Year of fee payment: 18

Ref country code: DE

Payment date: 20231025

Year of fee payment: 18