EP1933985A1 - Broyeur a boulets pourvu de moyens d'encliquetage - Google Patents

Broyeur a boulets pourvu de moyens d'encliquetage

Info

Publication number
EP1933985A1
EP1933985A1 EP06828804A EP06828804A EP1933985A1 EP 1933985 A1 EP1933985 A1 EP 1933985A1 EP 06828804 A EP06828804 A EP 06828804A EP 06828804 A EP06828804 A EP 06828804A EP 1933985 A1 EP1933985 A1 EP 1933985A1
Authority
EP
European Patent Office
Prior art keywords
receiving device
grinding
ball mill
receiving
grinding vessel
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.)
Granted
Application number
EP06828804A
Other languages
German (de)
English (en)
Other versions
EP1933985B1 (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 DE202005015896U external-priority patent/DE202005015896U1/de
Priority claimed from DE200620007799 external-priority patent/DE202006007799U1/de
Application filed by Fritsch GmbH filed Critical Fritsch GmbH
Publication of EP1933985A1 publication Critical patent/EP1933985A1/fr
Application granted granted Critical
Publication of EP1933985B1 publication Critical patent/EP1933985B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

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 bowls in a planetary ball mill causes an absolute rotational movement of the grinding bowls about their 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 superimposed on the centrifugal component, which is generated by the circulation of the grinding bowls about the center axis. Finally, the Coriolis effect is also effective. These three forces result in the planetary ball mill resulting force field to which the grinding balls and the material to be ground are exposed.
  • Planetary Ball Mill generates trajectories for the grinding balls.
  • the grinding balls then move across the grinding bowl until they impinge on the inner wall of the grinding bowl. Thereafter, the grinding balls are taken along the inner circumference of the grinding bowl until the resulting force again ensures that the above-described transverse movement takes place and the grinding balls make a flight movement through the grinding bowl. This is also referred to as "Wurfregime”.
  • 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 factors are the entire contact surface between regrind and grinding balls or
  • Mahlbecherinnenwand the relative movement between the particles to be crushed 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, and the frequency of the stresses of the ground material by contacts with the Mahlkugeln, 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.
  • Such a planetary ball mill is known for example from the utility model DE 1 836 885 of the same Applicant. Therein a planetary ball mill is described, which comprises planet carrier, on which grinding jars are fastened with a tensioning device.
  • GB 730 494 proposes a ball mill which has a rotary chamber which rotates about its own axis and at the same time revolves around a fixed axis substantially parallel to its own axis, the spacing of the two axes being smaller than the radius the chamber is.
  • the mill described in GB 730 494 comprises 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.
  • Lids for closing the grinding bowl of ball mills are pressed in such conventional mills via a tensioning device, for example by means of a spindle, on the grinding bowl, whereby at the same time Mahlbecher is pressed against the bottom of the cup receiving device.
  • the bracing device can for this purpose have a bracket which engages in recesses of a Mahlbecherhalterung to apply the support force. Such an arrangement is described for example in DE 297 24 830 Ul.
  • Connect screw is also the complicated structure of these fastening devices for the grinding vessel in the receiving device.
  • the insertion of the grinding vessel in the receiving device also requires several individual handles, in particular for positioning the grinding vessel in the tensioning device and tightening the individual screws, and thus is time consuming and error prone.
  • the invention provides a ball mill, in particular a planetary or centrifugal ball mill on a laboratory scale, which is a housing, a support device which is rotatably mounted on the housing about a center axis, at least one receiving device for at least one grinding jar which is rotatable about a receiving axis Carrier device is mounted and carried by this about the center axis, a drive for the carrier device, a drive for the receiving device, at least one fillable with grinding balls grinding vessel, which comprises a grinding bowl and a lid for releasably closing the grinding bowl, wherein the grinding vessel in the receiving device is held in a target position, when fully inserted into the receiving device, wherein the receiving device and the grinding vessel have mutually complementary locking means for releasably securing the grinding vessel in the target position in the receiving device.
  • the invention provides that the receiving device and the grinding vessel to each other complementary latching means for releasably securing the grinding vessel in the target position in the receiving device, can be advantageously dispensed with separate clamping devices. This achieves a compact construction of the ball mill. In addition, a fast and reliable insertion of the grinding vessel into the receiving device is made possible with the ball mill according to the invention, since the cumbersome positioning and tightening external clamping devices is eliminated. The fixing of the grinding vessel in the
  • the receiving device is advantageously independent of the closing of the grinding bowl with the lid by means of separate, own connecting means, since the closed grinding jar is latched in the receiving device.
  • the locking means act directly between the grinding vessel and receiving device.
  • This design of the locking means further contributes to a simple, compact construction of the ball mill.
  • the locking means may be designed such that they act directly between grinding bowl and receiving device.
  • the locking means for Hefstellen a positive connection between the grinding vessel and the receiving device are formed. This advantageously ensures a secure locking of the grinding vessel.
  • the latching means comprise at least one separate latching body, in particular at least one
  • Detent ball The construction of the latching means with a latching body offers the advantage of a stable construction even under high stress on the latching means due to changing loads.
  • the latching body is arranged radially movable in the receiving device with respect to the receiving axis and can assume a closed position and an open position, wherein the latching body is positioned in the closed position in a region of the receiving device, which has a space forms for receiving the grinding vessel, so that an axial displacement of the grinding vessel is blocked in the receiving device when the grinding vessel touches the locking body in its closed position, and in the opened position outside the region of the receiving device, which forms a space for receiving the grinding vessel, is positioned so that the grinding vessel can be brought to its target position in the receiving device.
  • the inventive arrangement of the detent body in the receiving device advantageously contributes to the fact that the grinding jar can be fixed in the receiving device only when the movement of the detent body, the adoption of the target position of the grinding vessel has been made possible.
  • the grinding jar can be inserted into the receiving device from a dipping position via an intermediate position into the target position, wherein in the dipping position at least one part, in particular at least one lower part, of the grinding jar is inserted into the receiving device.
  • the locking body in its closed position forms a stop for the grinding vessel, so that a further insertion to the target position is only possible when the locking body is transferred to the open position.
  • the grinding vessel in the receiving device is finally locked by the locking means.
  • a position is advantageously defined in which the transition from an unattached, loose state of the grinding vessel, even if it is at least partially within the receiving device, can take place in a fixed state.
  • the locking means may comprise according to the invention at least one actuating element, with which the locking body can be brought from one position to another.
  • the latching means comprise at least one actuating element for transferring the latching body from its open to its closed position, which represents the normal state of positioning of the latching body, and from its closed position to its open position, wherein the actuating element is a locking position, in which the latching body in the closed position, and a release position in which the open position of the detent body is released, can take, wherein by the transfer of the actuating element from its locking position to its release position in response to the taking of the open position by the detent body, the grinding vessel from its intermediate position in its target position, and is transferable from its target position to its immersion position.
  • Detent body and the grinding vessel is created in an arrangement of three components, each of which moves along only a single axis, in a mechanically simple way a way to selectively lock the grinding vessel in the receiving device and selectively release while the transition between the catch and the to be able to control the released position in a targeted manner.
  • the actuating element may be designed such that it a first receiving portion for receiving at least a portion of a detent body, with which the detent body is in its open position in engagement.
  • the open position of the locking body is thus in a defined manner simply to achieve that the locking body penetrates into the first receiving area of the actuating element.
  • the actuating element comprises at least one holding portion with which the locking body is in its closed position in contact to bring in a defined manner the locking body by means of an advantageously simple construction in its closed position.
  • the actuating element is held axially movable in the receiving device, wherein it is axially biased, for example via springs, in particular spiral springs, wherein in the locking position of the holding region of
  • Actuator holds the locking body in a region of the receiving device, which forms a space for receiving the grinding vessel, that is, that the holding portion of the actuating member blocks the catch body such that a portion projects into the space for receiving the grinding vessel, and in the release position of first receiving area receives at least a portion of the detent body, so that the detent body is positioned outside the region of the receiving device, which forms a space for receiving the grinding vessel.
  • Receiving device is advantageously achieved by means of a simple construction, a direct coupling of the operation of the actuating element and the movement of the Rastkorpers.
  • the locking means comprise at least a second receiving area on the grinding vessel for receiving at least a portion of the detent body, with which the detent body in its closed position in ' engaged when the grinding vessel is fully inserted into the receiving device.
  • the second receiving region may be positioned on the grinding bowl.
  • the closed position of the latching body is thus advantageously coupled manner to the target position of the grinding vessel.
  • the target position of the grinding vessel in the receiving device defines the correct position of the grinding vessel for the operation of the ball mill.
  • the grinding vessel is attached according to the advantageous embodiment of the invention only in the receiving device when it assumes this desired, defined for the operation of the ball mill position. The invention therefore offers significant advantages in terms of the safety of operation of the mill.
  • the invention advantageously provides various options for designing the second receiving area.
  • the second receiving area comprises a groove running around the grinding vessel, in particular an annular groove into which the locking body can engage.
  • the region of the annular groove can be hardened in a metallic grinding vessel or be made of hard metal in order to withstand high loads.
  • the second receiving area can also at least one recess in the outer wall of the grinding vessel, for example in the form of at least one dome, in particular in the outer circumferential surface of the grinding bowl, include, in which the locking body can engage.
  • the recess can be provided with a particularly resistant surface, for example made of hardened steel, in order to be able to withstand the high load of the interventions of the ratchet body.
  • the ball mill may further comprise means for controlling the mill, in particular for automated operation of the grinding operation.
  • the control of the mill allows operation of the mill preferably only when the grinding vessel is fully inserted in the target position.
  • the mill in a further embodiment has a detection device for detecting the reaching of the target position by the grinding vessel, which in particular can give a signal to the control of the mill, so that the operation of the mill under response can be started on this signal.
  • the invention also advantageously offers the possibility to secure the locking means. If the springs, with which the actuator is biased axially in the receiving device, fatigue and break, namely there is otherwise the risk that the actuator inadvertently from its closed position, in which the grinding vessel is fixed, reaches its open position. Then the grinding vessel can be released from the receiving device.
  • the ball mill is designed such that at least a certain angular position of the support device, ie position of the receiving device is defined with respect to the housing and / or at least a certain angular position of the receiving device with respect to the planetary axis, in which operated the mill can (operating position), in which so the insertion of the grinding vessel in the receiving device until
  • the mill preferably has a securing device with securing means for blocking the actuation of the actuating element in a predominant region of the rotation of the carrier device and the receiving device (blocking position).
  • the safety device thereby defines the operating position in which the fuse is released and the grinding vessel can be locked or released.
  • the actuator can be moved from its locking position to the release position.
  • the securing means secure the locking means in the closed position.
  • the securing means are unlocked when the operating position is taken.
  • the operating position is particularly preferred to design the operating position as a specific angular position of the carrier device, so that the operating position correlates with a specific position of the receiving device, for example the user, so that the receiving device in the carrier device has a predefined angular operating position with respect to the receiving axis has, in which the actuator of his Locking position can be moved to the release position.
  • the over- or reduction ratio of the plant rotation for sun rotation is chosen to be integer, corresponds to the operating position with the specific angular position of the
  • the construction of the securing device is particularly simple.
  • the securing means comprise a stop element, e.g. in the form of a stop plate, which is firmly connected to the carrier device and forms a stop for the at least one actuating element, in particular for the lower end of the actuating element of the latching means.
  • the stop plate further has at least one passage opening for the at least one
  • Actuating the latching means and is positioned so that the operating position is taken when the actuating element of the latching means is aligned with the passage opening in the stop plate.
  • the design of the securing means is more difficult when a certain angular position of the support device is to be defined as the operating position of the moving parts of the mill and the over / under ratio is not integral. A preferred embodiment will be explained below with reference to FIG.
  • the receiving device further comprises at least one ejection device for ejecting the grinding jar from the receiving device.
  • the ejection device comprises at least one ejector for the Grinding jar, which is positioned in a guide means such that the ejector assumes a first position until the grinding jar comes into contact with the ejector when inserted into the receiving device, and assumes a second position when the grinding jar is inserted in its target position in the receiving device ,
  • the ejection device further comprises at least one spring, in particular a spiral spring, on which the ejector in its second position against the
  • the invention provides in an advantageous development, that the driving means produce a positive engagement between the side wall of the grinding vessel and the receiving device when the grinding vessel is inserted into the receiving device.
  • this comprises parts acting as entrainment means of fastening means on the grinding vessel and corresponding recesses on the receiving device.
  • a fastening means for attaching the lid to the grinding bowl have at least partially one of the
  • the receiving device has a corresponding to the protruding part of the fastening means recess into which the protruding part can engage when the closed grinding jar is inserted into the receiving device.
  • the ball mill can be further developed according to the invention such that the grinding vessel and the receiving device acting as a driving means guide means which in addition to the function as entrainment even with respect to the position of the grinding vessel in the circumferential direction, an orientation of the grinding vessel in the receiving device Insertion of the grinding vessel in the receiving device allows.
  • the guide means comprise at least one groove in the outer circumferential surface of the grinding vessel, which runs in particular parallel to the receiving axis, and have at least one projection which from the inner surface of the receiving device in the space for the receptacle of the grinding vessel projects into which can be in engagement with the groove of the grinding vessel.
  • the grinding vessel and the receiving device acting as entrainment means have complementary locking means by which the grinding vessel via at least one locking body, in particular a detent ball, can be held firmly in the receiving device.
  • Figure 1 is a schematic representation of the ball mill according to the invention in one
  • Figure 2A is a perspective view of the assembled
  • FIG. 2B shows a cross section through the two planetary axes in FIG. 2A
  • FIG. 2C shows a perspective view as in FIG. 2A, but with the two receiving devices being installed in a different relative angular position with respect to one another and further rotated, so that the latching means can be opened
  • Figure 2D is a plan view of that shown in Figure 2C
  • Figure 2E shows a cross section along the line A-A in
  • Figure 2D Figure 2F is a cross section along the line C-C in Figure
  • FIG. 3 shows an illustration of the receiving device in a plan view (FIG. 3D) and in a cross section according to section A-A (FIG. 3A), section B-B (FIG. 3B) and section C-C (FIG. 3C), FIG.
  • Figure 4 is an illustration of the insertion of the
  • FIG. 4D shows in cross section according to section A-A (FIG. 4A), section B-B (FIG. 4B) and section C-C (FIG. 4C), FIG.
  • Figure 5 is an illustration of the insertion of the
  • Figure 6 is an illustration of the insertion of the
  • Figure 7 is an illustration of the insertion of the
  • Grinder in the receiving device during Closing the latching means in plan view ( Figure 7D) and in cross section according to section AA ( Figure 7A), section BB ( Figure 7B) and section CC ( Figure 7C).
  • Figure 8 is a schematic three-dimensional cross-sectional sketch of the carrier device in a mill according to the invention with four planets, in which some elements are not shown.
  • a breakout of a housing 8 can be seen, on which the carrier 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 19, which is engaged with the bottom disk 6 of the carrier device 1.
  • Receiving devices around the planetary or recording axes 25 can be set in rotation.
  • a toothed belt 21 transmits via correspondingly dimensioned pinion 23, the rotation of the support device on 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 support device 1 further comprises a cover plate 4 and a shell element 7.
  • the upper boundary plane 10 for rotating parts of the ball mill is substantially covered by the cover 4 together with the upper limit of Grilling vessel 5 defined. Only the co-rotating lever elements 70 protrude beyond the plane 10 for attachment of the cover 52 to the grinding bowl 51.
  • the locking means according to the invention can be used in particular with such a compactly constructed ball mill, in which the grinding vessel 5 is sunk in the receiving device 2 and in the carrier device 1.
  • the locking means according to the invention are not limited to an application in such a mill, but can also develop their above-mentioned advantages, if no such recessed arrangement of the grinding jars is selected.
  • the cover 4 has openings 45 through which the receptacles 2 are sunk into the interior of the support device 1.
  • the grinding vessel 5 is also sunk through the opening 45 in the cover 4 in the interior of the support device 1, wherein the grinding vessel 5 is inserted into the receiving device 2. Furthermore, the bottom plate 6 can be seen.
  • recording devices 2 are usually aligned the same, as shown in Figures 2C, 2D and 2E.
  • a receiving device 2 is provided with a first bearing device 31 and a second bearing device 32 about a receiving axis 25 rotatably mounted in the carrier device 1.
  • the upper bearing device 32 is sunk in the cover 4.
  • the lower bearing device 31 is arranged in the bottom disk 6.
  • the carrier device 1 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 receiving device 2 is formed in one piece and comprises an upper region forming a space 2a for receiving the grinding vessel 5 and a lower region forming an axle extension around the receiving axis.
  • 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, an upwardly open cavity 2a for receiving the grinding vessel 5 forming region has a bottom and an adjoining the bottom annular side wall. The side wall is substantially completely closed.
  • the grinding vessel 5 is surrounded by the receiving device 2 almost completely annular and it is in particular a substantially full-surface contact of the lateral surface 55 of the grinding vessel 5 with the inner wall of the receiving device 2 allows.
  • the axle extension 30 of the receiving device 2 is hollow in the embodiment shown.
  • the axle extension 30 can, as shown in Figure 2B, a Have through hole.
  • the invention is also to be realized with an axle extension 30, which comprises a blind hole.
  • An ejector pin 28 for the grinding vessel 5 is held in the hollow axle extension 30 of the receiving device 2.
  • 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 a recess 35 for receiving axis 25 towards shoulder 35, which defines an upper seat for the spring.
  • a lower seat for the spring is formed by the lower lens of the receiving device 2, which is connected to the hollow axle extension 30 of the receiving device 2.
  • 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 is released in the receiving device 2, the spring relaxes and pushes the ejector pin 28 upwards so that it moves the grinding vessel 5 with upwards.
  • Each receiving device 2 has two diametrically opposite actuating pins 93, which cooperate with a respective detent ball 92.
  • the detent balls 92 in turn interact with the grinding vessel 5.
  • the actuating pins 93 have a lower end 94.
  • the carrier device has to secure the Actuating pin 93 a, in this example with the bottom plate 6 and thus with the support device 1 rotatably connected stop plate 91 as a securing means.
  • positions of the two receiving devices 2 are the
  • Actuating pin 93 locked and can not be moved from its shown position in which the -Rastkugel 92 is held in engagement with the grinding vessel, since the lower end 94 is blocked by the stop plate 91.
  • passage openings 96 are provided in the stop plate 91.
  • the two receiving devices 2 are shown in an operable position.
  • the receiving device 2 is in such an orientation in the carrier device that the lower end 94 of the actuating element 93 can enter the passage opening 96 when the actuating element 93 is moved downward.
  • the actuator 93 can be pressed down by the operator, as explained below, so that the
  • Locking means can take an open position. It can be seen that this double security function is achieved, namely on the one hand, the actuators 93 are only betägigbar when the mill is in the operating position and on the other hand rotation of the support device is prevented when at least one actuator 93 is in its release position.
  • the attachment of the grinding vessel 5 in the receiving device 2 will be explained below with reference to Figures 3 to 7.
  • FIG. 3D shows a plan view of a receiving device 2.
  • the receiving device 2 shown on the outside, has an upper edge and, in the center, a space 2a for receiving the grinding jar 5.
  • FIGS. 3D shows a plan view of a receiving device 2.
  • the receiving device 2 shown on the outside, has an upper edge and, in the center, a space 2a for receiving the grinding jar 5.
  • the receiving device is shown longitudinally in cross section along section line A-A from FIG. 3D.
  • the receiving device 2 comprises pins 22 as
  • the receiving device further comprises the ejector pin 28. Not shown is the spring which the
  • Ejector pin axially biased when the grinding vessel 5 is fully inserted into the receiving device 2 and pushes the ejector pin 28 down with its bottom and thus biases the spring.
  • FIG. 3B shows a section along the section line B-B in relation to FIG. 3D, in which the latching means are shown in cross-section.
  • the receiving device 2 has outside and inside cooling fins to the heat removal from the
  • the receiving device 2 comprises actuating pin 93 and locking body 92.
  • the actuating pin 93 have a first Receiving portion 932 for the locking body 92, and a holding portion 935 in the form of a locking bolt with which the locking body can be in contact. Whether at least a part of the detent body 92 engages in the first receptacle 932, or whether the detent body in contact with the
  • Holding portion 935 of the actuating element 93 is dependent on the axial position of the actuating element, in particular whether the actuating element 93 is in its closed position or in its open position.
  • the holding area or locking pin 935 is axially displaceably mounted and guided in a plain bearing bush 936.
  • the actuating pins 93 are in the illustrated embodiment rotationally symmetrical pins, which are mounted axially displaceably in guide channels 97 in the outer peripheral region of the receiving device 2.
  • the actuating pins 93 have an upper portion, which is designed as a kind of push button 98. If a force is exerted on the bolt by the operator via this push button, the actuating pin can be displaced axially.
  • An actuating pin 93 further has a lower portion, which comprises means complementary to the locking body, so that by actuation of the bolt 93, the displacement of the detent ball 92 for locking or for opening the locking of the grinding vessel 5 in the receiving device 2 can be effected.
  • the actuating pin 93 has in its lower area next to the holding area 935 the first receiving area 932 for the detent ball 92.
  • the pushbutton-like designed end 98 of the actuating bolt 93 opposite end is formed by the stop surface 94.
  • the invention is not limited to an axially movable actuator.
  • Figures 4, 5, 6 and 7 show corresponding to Figure 3 representations of the receiving device 2 in different stages of insertion of the grinding bowl 5 in the receiving device 2.
  • About the guide means and the locking means is the grinding jar 5 in contact with the receiving device. 2
  • the grinding vessel 5 is shown in its immersed position with respect to the receiving device 2.
  • the grinding bowl 5 is inserted into the receiving device 2 and rotated about its longitudinal axis until the grooves 550 of the grinding bowl 51 "find" with the setscrews 22 of the receiving device 2, so that on further lowering of the grinding vessel 5 in the receiving device 2, the set screws 22 in can slide the grooves 550.
  • Locking balls 92 and actuating pin 93 of the locking means are in the closed position.
  • the locking balls 92 are in contact with holding portions 935 of the actuating pin 93.
  • the receiving device 2 has in the design according to the figures depending on two actuating pins 93 and locking balls, which are arranged diametrically opposite in the receiving device 2. In the context of the invention, however, more or less locking means may be provided.
  • the grinding vessel 5 has the second grinding bowl 51
  • the second receiving areas comprise recesses for receiving at least a portion of the detent body 92.
  • Such a recess may be designed as a circumferential groove outside the grinding vessel.
  • the grinding bowl 51 as a second receiving area on an annular groove in the outer circumferential surface of the grinding bowl 51. Locking balls 92 can engage in this annular groove in order to lock the grinding jar 5 axially in the receiving device 2.
  • the second receiving areas are designed as calottes 95.
  • the calottes 95 are positioned by the correct orientation of the grinding vessel 5 in the receiving device 2 via the guide groove 550 and the threaded pins 22 so that they can engage around the locking ball 92 upon actuation of the bolt 93 and correspondingly far lowering the grinding bowl 5 in its target position (FIG 4B).
  • FIG. 5 shows a position of the grinding vessel 5 in the receiving device 2 which is slightly further lowered in comparison with the illustration of the immersion position of the grinding vessel in FIG. 4, namely the intermediate position.
  • the guide pins 22 are engaged with the
  • the locking means with actuating pin 93 and detent ball 92 are in the closed position, wherein the grinding vessel 5 is lowered so far that it is prevented by further contact with the detent ball 92 on further lowering.
  • the detent ball 92 is prevented from coming in contact with the holding portion 935 of the actuating bolt 93 at a radial displacement with respect to the receiving axis 25 to the outside.
  • the detent ball 92 therefore protrudes into the space 2a of the receiving device 2 for receiving the grinding vessel 5, so that the grinding vessel 5 is blocked by the detent ball 92 in its axial position.
  • Another lowering of the grinding vessel 5 in the receiving device 2 from the intermediate position is out in the embodiment shown only possible when the operator actuates the actuating pin 93 in the insertion direction of the grinding vessel 5, that is, in the present case, presses down.
  • FIG. 6 the arrangement is shown in a setting with latching means opened as described above.
  • FIG. 6B shows the actuating pin 93 pressed down, which is shaped in such a way that, in the open position of the latching means, it permits the detent ball 92 to be deflected and thus the further insertion of the grinding vessel 5.
  • Vorverrastposition the locking means are open.
  • Actuating pin 93 can be moved back to the closed position. In the one shown in FIG.
  • Vorverrastposition the operator can therefore by simply depressing the grinding vessel 5 lock the grinding vessel in the receiving device. For this, the operator may apply a force, e.g. on the lid 52 exercise and so move the entire grinding vessel 5 further down into the receiving device 2 into it.
  • the actuating pins 93 assume the release position and the detent ball 92 is in contact with the first receiving portion 932, so
  • FIG. 7 shows the latched target position of the grinding vessel 5 in the receiving device 2.
  • the guide pin 22 has its reaches upper end position in the guide groove 550.
  • the ejector pin 28 is compared to the not fully inserted positions of the grinding vessel 5 shown in Figures 4, 5 and 6 down in his recording.
  • Actuating pins 93 can be used as well as for and the ejector pin 28, for example, helical compression springs.
  • Receiving device 2 thus move the grinding jar 5, the detent ball 92 and the actuating pin 93.
  • the grinding jar 5 moves from top to bottom.
  • the detent ball 92 moves from the inside to the outside and back inwards with respect to the receiving axis.
  • Actuator pin 93 moves from top to bottom and back up.
  • the movements of the grinding vessel 5, the detent ball 92 and the actuating pin 93 correspond due to the running in response to the movements transfer of the detent ball from one component to another with each other.
  • the detent ball 92 is handed over, as it were, from the holding region 935 of the actuating bolt 93 to the first receiving region 932, and further from the first receiving region 932 of the actuating bolt 93 to the second receiving region 95 of the grinding vessel 5, the detent ball 92 again comes into contact with the holding portion 935 of the actuating bolt 93.
  • FIG. 8 shows a schematic diagram of another embodiment of the planetary ball mill according to the invention with four receiving devices, each with a grinding jar 5 'of which only two, of which the left cut, are shown.
  • the mill has a non-integer speed ratio between sun and planetary rotation.
  • the safety device comprises one around the
  • Receiving device circumferential locking ring 99 which is fixed to the locking pin 935 ', which in this embodiment, however, is axially separated from the upper part of the actuating bolt 93'.
  • the locking pin 935 ' rotates as in the illustrated in Figs. 1-7
  • the upper part of the actuating bolt 93 ' is not co-rotating with the receiving device, as in Figs. 1-7. the planetary rotation, but attached to the support device 1 '.
  • the locking pin 935 ' is actuated indirectly by means of the locking ring 99.
  • the stop member 91 ' is rotatably attached to the device housing as a circular ring element at the center postbolt 26 and overlaps in a large angular range with the locking ring 99 to lock it in general, as in the rear grinding vessel 5'.
  • the stop element 91 ' has an opening in the form of a lateral recess 96', which eliminates the blocking and the movement of the locking ring 99 and thus the actuating elements 93 'and the locking pin 935' in a certain angular position (left grinding vessel 5 ') of the support device. 1 releases.
  • lever element 8 housing

Landscapes

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

Abstract

L'objet de la présente invention est la mise au point d'un broyeur à boulets compact qui permet une installation rapide, fiable et simple de la cuve de broyage dans le dispositif récepteur, et le découplage de la fermeture du bol de cuve à l'aide d'un couvercle et de la fixation de la cuve de broyage dans le dispositif récepteur. A cet effet, un broyeur à boulets selon la présente invention, en particulier planétaire ou centrifuge, de dimensions adaptées à un laboratoire, comporte un boîtier (8), un dispositif de support (1) monté rotatif autour d'un axe central (15) sur le boîtier (8), au moins un dispositif récepteur (2) pour au moins une cuve de broyage (5), qui est monté rotatif autour d'un axe de réception (25), par rapport au dispositif de support (1), et qui est entraîné par ce dernier autour de l'axe central (15), un dispositif d'entraînement (17) pour le dispositif de support (1), un dispositif d'entraînement (27) pour le dispositif récepteur (2), et au moins une cuve de broyage (5) pouvant être remplie de boulets de broyage, et constituée d'un bol de broyage (51) et d'un couvercle (2) destiné à fermer de manière libérable le bol de broyage. La cuve de broyage (5) est retenue dans le dispositif récepteur (2) dans une position cible lorsqu'elle est complètement installée dans le dispositif de support (2), et le dispositif récepteur (2) et la cuve de broyage (5) possèdent des moyens d'encliquetage complémentaires (92, 93, 932, 935, 95) pour la fixation libérable de la cuve de broyage (5) dans la position cible dans le dispositif récepteur (2).
EP06828804A 2005-10-07 2006-10-05 Broyeur a boulets pourvu de moyens d'encliquetage Expired - Fee Related EP1933985B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202005015896U DE202005015896U1 (de) 2005-10-07 2005-10-07 Kugelmühle mit Rastmittel
DE200620007799 DE202006007799U1 (de) 2006-05-13 2006-05-13 Kugelmühle mit Mitnahmemitteln für eine formschlüssige Verbindung zwischen Mahlgefäß und Aufnahmevorrichtung
PCT/EP2006/009643 WO2007042203A1 (fr) 2005-10-07 2006-10-05 Broyeur a boulets pourvu de moyens d'encliquetage

Publications (2)

Publication Number Publication Date
EP1933985A1 true EP1933985A1 (fr) 2008-06-25
EP1933985B1 EP1933985B1 (fr) 2009-12-16

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EP06828804A Expired - Fee Related EP1933985B1 (fr) 2005-10-07 2006-10-05 Broyeur a boulets pourvu de moyens d'encliquetage

Country Status (3)

Country Link
EP (1) EP1933985B1 (fr)
DE (1) DE502006005687D1 (fr)
WO (1) WO2007042203A1 (fr)

Cited By (7)

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DE102012007530A1 (de) 2012-04-17 2013-10-17 Fritsch Gmbh Mahlgefäß für eine Labormühle
DE102012009985A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
DE102012009984A1 (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
DE102012009982A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
DE102012009987A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
CN113573814A (zh) * 2019-01-16 2021-10-29 雷特希有限责任公司 球磨机和用于球磨机的研磨罐

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DE102010044254B4 (de) 2010-09-02 2017-08-10 Fritsch Gmbh Kugelmühle mit Querverspannung des Mahlbechers
EP2622317B1 (fr) 2010-10-01 2016-04-06 Lô, Insa Méthode pour couper des cheveux
US10518269B2 (en) * 2017-10-13 2019-12-31 SPEX SamplePrep, LLC Grinding mill with securing frame

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DE19712905C2 (de) * 1997-03-27 2003-11-06 Fritsch Gmbh Laborgeraetebau Planetenkugelmühle
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
AU2002362152A1 (en) * 2002-09-24 2004-04-19 Vladimir Georgievich Kochnev Planetary mill

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012007530A1 (de) 2012-04-17 2013-10-17 Fritsch Gmbh Mahlgefäß für eine Labormühle
DE102012007530B4 (de) * 2012-04-17 2017-05-11 Fritsch Gmbh Mahlgefäß für eine Labormühle
DE102012009985A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
DE102012009984A1 (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
DE102012009982A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
DE102012009987A1 (de) 2012-05-22 2013-11-28 Fritsch Gmbh Laborkugelmühle
DE102012009987B4 (de) 2012-05-22 2023-02-23 Fritsch Gmbh Laborkugelmühle
CN113573814A (zh) * 2019-01-16 2021-10-29 雷特希有限责任公司 球磨机和用于球磨机的研磨罐

Also Published As

Publication number Publication date
DE502006005687D1 (de) 2010-01-28
EP1933985B1 (fr) 2009-12-16
WO2007042203A1 (fr) 2007-04-19

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