EP3840889B1 - Broyeur vibrant de laboratoire - Google Patents

Broyeur vibrant de laboratoire Download PDF

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Publication number
EP3840889B1
EP3840889B1 EP20771226.6A EP20771226A EP3840889B1 EP 3840889 B1 EP3840889 B1 EP 3840889B1 EP 20771226 A EP20771226 A EP 20771226A EP 3840889 B1 EP3840889 B1 EP 3840889B1
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EP
European Patent Office
Prior art keywords
grinding
grinding bowl
heat transfer
tempering
transfer element
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
EP20771226.6A
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German (de)
English (en)
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EP3840889A1 (fr
Inventor
Zilan ORHAN
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.)
Retsch GmbH
Original Assignee
Retsch GmbH
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Filing date
Publication date
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Publication of EP3840889A1 publication Critical patent/EP3840889A1/fr
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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
    • B02C17/18—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
    • B02C17/14—Mills in which the charge to be ground is turned over by movements of the container other than by rotating, e.g. by swinging, vibrating, tilting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/1805—Monitoring devices for tumbling mills

Definitions

  • the invention relates to a laboratory vibratory mill with at least one vibratory mounted grinding jar holder for at least one grinding jar and with a temperature control device for temperature control, ie cooling and / or heating, of the grinding jar by supplying and / or discharging a liquid or gaseous temperature control medium via at least one temperature control line to or from the grinding jar holder.
  • liquid nitrogen is fed into the rotating union via a nitrogen line and a switching valve as well as via a connection and leaves the rotating union via a supply line connected to the connection.
  • the nitrogen flow is then led to the grinding jar holder and from there back to the movable part of the rotating union and finally reaches a collecting vessel via the stationary part of the rotating union and a return line connected to it.
  • the switching valve is closed. After so much nitrogen has evaporated that the sensor is no longer wetted with nitrogen, the switching valve is opened again. This ensures the supply of liquid nitrogen at all times during the grinding process.
  • the grinding jar holder is flooded with nitrogen and the grinding jar located therein is flushed with liquid nitrogen. As a result, there is direct contact between the temperature control medium and the grinding jar. In addition, the grinding jar is always maximally cooled by the flooding in liquid nitrogen.
  • the object of the present invention is to provide a laboratory vibrating mill with the features mentioned at the beginning which allows the temperature of the grinding bowl or a sample received in a grinding chamber of the grinding bowl using different temperature control media in a structurally simple manner, with direct contact of the grinding bowl does not take place with the temperature control medium during a grinding process.
  • the grinding jar holder has at least one heat transfer element connected to the temperature control line, the heat transfer element has at least one media channel for conducting the temperature control medium and wherein the temperature control of a grinding jar held on and / or in the grinding jar holder takes place by heat transfer between the temperature control medium guided in the media channel and the grinding jar via a wall of the heat transfer element.
  • the invention is based on the basic idea of providing a separate component of the grinding jar holder and / or, in the simplest case, a section and / or an area of the grinding jar holder for the heat transfer between the temperature control medium and the grinding jar.
  • the temperature control medium is guided in a media channel, which is preferably formed in the heat transfer element and is hermetically sealed with respect to the grinding jar, in particular with respect to the environment.
  • the heat transfer element is flushed through with a liquid or gaseous medium for removing energy from the grinding jar or for supplying energy to the grinding jar.
  • the cooling media can be, for example, water, thermal oils or liquid nitrogen. Liquid helium can also be used as a cooling medium.
  • the cooling concept according to the invention can be implemented with any liquid or gaseous cooling media.
  • the amount of energy supplied or removed during temperature control can be easily adapted to the actual requirement of the sample.
  • the temperature control line is connected to a temperature control device which is designed to provide a possibly cooled or heated temperature control medium and to forward the temperature control medium to a grinding jar holder and to divert the temperature control medium from the grinding jar holder and, if necessary, dispose of the temperature control medium.
  • the heat transfer element can be connected to at least two temperature control lines for supplying the temperature control medium to the heat transfer element and for discharging the temperature control medium from the heat transfer element.
  • a media duct that is closed to the environment is preferably provided via the temperature control lines and the media channel in the heat transfer element.
  • the temperature control takes place by heat transfer between the temperature control medium and the grinding jar via contact surfaces of the heat transfer element and the grinding jar that are preferably in direct contact with one another.
  • the heat is preferably transferred via metallic contact surfaces. This ensures good heat transfer.
  • the contact surfaces can be ground or finely milled and have a low roughness in order to improve the heat transfer.
  • a heat transfer medium for example a heat-conducting paste, a heat-conducting pad or a metallic foil, is arranged between the heat transfer element and the grinding jar in order to improve the heat transfer.
  • An embodiment is particularly preferred in which the heat transfer element and the grinding bowl abut one another essentially over their entire surface in the area of the contact surfaces. This is also done for the purpose of improving the heat transfer between the heat transfer element and the grinding jar.
  • the heat transfer between the heat transfer element and the grinding jar can essentially take place exclusively by heat conduction via the contact surfaces of the heat transfer element and the grinding jar. Nevertheless, an embodiment can be implemented in which a liquid heat transfer medium, such as a thermal oil, is arranged between the heat transfer element and the grinding jar, so that convective heat transfer between the heat transfer element and grinding jar is not fundamentally excluded.
  • a liquid heat transfer medium such as a thermal oil
  • a heat transfer element designed as a flat temperature control plate is provided, the grinding jar being able to be set up on the temperature control plate when it is attached to the grinding jar holder is.
  • the heat transfer element thus fulfills a double function. On the one hand, it serves to transfer heat. On the other hand, the temperature control plate ensures a stable and fixed arrangement of the grinding bowl in and / or on the grinding bowl holder.
  • the grinding jar holder can be designed to clamp the grinding jar against the heat transfer element.
  • the grinding jar is forced to be braced against the heat transfer element when the grinding jar is braced in and / or on the grinding jar holder.
  • the grinding jar can be moved in and / or on the grinding jar holder in a first clamping direction when it is clamped, whereby when the grinding jar is moved in the first clamping direction by force deflection, the grinding jar is automatically moved in the second clamping direction and the grinding jar is clamped against the heat transfer element can.
  • the grinding jar holder can have correspondingly designed projections or geometries which act when the grinding jar is clamped against the grinding jar and move it in the second tensioning direction.
  • the first tensioning direction and the second tensioning direction can run orthogonally to each other, whereby, for example, the grinding jar is automatically moved in the horizontal direction when braced in and / or on the grinding jar holder and automatically in the vertical direction by force deflection in order to move the grinding jar against the heat transfer element until the grinding jar rests against the heat transfer element and is braced.
  • the heat transfer element can be formed by two wall parts that are permanently fixed to one another, in particular welded to one another, further preferably flat, plate-shaped wall parts, the media channel being formed between the connected wall parts.
  • the media channel can be formed by milled flow channels in a wall part, the other wall part then only serving to cover the flow channels.
  • the heat transfer element can also have bores introduced as media channels in a one-piece material block or a material plate. It is also possible to produce the heat transfer element by means of 3D printing.
  • the invention also relates to a laboratory oscillating mill with at least one oscillatingly mounted grinding jar holder for at least one grinding jar and a temperature control method for grinding jars in oscillating mills.
  • a measuring, control and / or regulating device for preferably automatic control and / or regulation of the temperature of the grinding jar holder and / or the grinding jar and / or for controlling and / or regulating the temperature in a grinding chamber of the grinding bowl. Regulation in a closed control loop can furthermore preferably be made possible.
  • the temperature measurement is preferably carried out in the immediate vicinity of the grinding vessel with at least one temperature sensor.
  • the control through the local proximity of at least one temperature sensor to the grinding vessel has a lower control inertia, so that the precision and speed of the control increase. Temperatures can particularly preferably be regulated with the aid of a PID controller.
  • At least one temperature measuring element in particular a temperature sensor, is provided on the grinding jar holder and / or in and / or on the grinding jar and / or on and / or in a temperature control line for a temperature control medium.
  • the temperature sensor can also be installed in the grinding chamber in order to enable the temperature of the grinding sample to be monitored in situ. The temperature sensor thus enables the temperature of the grinding vessel to be monitored. The determined temperature can be used as input for a process controller.
  • the temperature control, ie the cooling and / or heating, of the grinding jar can, as described above, be carried out with a temperature control device by supplying and / or discharging a liquid or gaseous temperature control medium, in particular liquid nitrogen, via the temperature control line to the grinding jar holder and / or directly to the Grinding jars.
  • the control and / or regulation of the temperature can take place in particular by changing the volume flow of the temperature control medium fed to the grinding jar holder and / or the grinding jar as a function of a measurement temperature and / or by changing the temperature of the temperature control medium directly by appropriate pre-cooling or preheating of the temperature control medium.
  • this aspect of the invention enables the amounts of energy transferred during temperature control to be adapted to the actual requirement, ie cooling or heating of the temperature control medium adapted to the specific amount of heat released during the grinding of a sample or required in connection with the grinding of the sample.
  • a temperature control and / or temperature regulation is provided which allows a stepless setting and / or regulation of the temperature of the grinding jar holder and / or the grinding jar.
  • the temperature can be controlled by preferably a clocked supply of liquid nitrogen, with a nitrogen stream being guided to the grinding jar holder and / or to the grinding jar and from there being returned via a return line to a collecting vessel.
  • a temperature sensor can be provided on and / or in the collecting vessel in order to detect the fill level of the liquid nitrogen in the collecting vessel via temperature detection. If nitrogen is detected, a switching valve in the supply line can be closed. After so much nitrogen has evaporated that the temperature sensor shows a significant drop in temperature and / or no longer comes into contact with nitrogen, the switching valve can be opened again in order to supply nitrogen again via the feed line to the grinding jar holder and / or the grinding jar. The nitrogen detection is thus carried out via temperature detection. It is not excluded, however, that a sensor is also provided that closes the switching valve when it comes into contact with liquid nitrogen.
  • a temperature on the grinding jar holder and / or in and / or on the grinding jar and / or on and / or in a temperature control line for the temperature control medium is measured and controlled and / or regulated according to the invention.
  • the grinding jar holder having a heat transfer element connected to the temperature control line, at least one temperature sensor can expediently be arranged on and / or in the heat transfer element.
  • the temperature sensor preferably engages in a media channel formed in the heat transfer element and, during the temperature measurement, the temperature control medium guided in the media channel flows around it.
  • a specific target temperature can be set or regulated with high accuracy.
  • the temperature sensor enables the temperature of the grinding jar holder to be monitored and thus also of the grinding jar. In principle, however, the temperature can also be recorded directly on the grinding jar and / or in a grinding chamber of the grinding jar. This enables direct temperature monitoring of a sample located in the grinding chamber.
  • the measured temperatures can be used as input values for a process controller of a measurement, control and regulation system. Due to the local proximity of the temperature measurement to the grinding vessel, a lower control inertia can be achieved in the temperature control, so that the precision and the speed of the control increase.
  • the measuring, control and / or regulating device can be designed to control and / or regulate the temperatures on the grinding jar holders and / or in and / or on the grinding jars independently of one another.
  • the temperatures in the grinding jars can thus be regulated independently of one another and the amount of heat to be dissipated from the respective grinding jar or the amount of heat to be supplied to the respective grinding jar can be adapted even more precisely to the actual heat requirement.
  • Fig. 1 shows a plan view of a vibrating mill 1 for two grinding bowls 2, 3 which perform circular arc-shaped vibrations in a horizontal position.
  • a pendulum drive of the vibrating mill 1 is constructed in several parts with an eccentric shaft 4 rotatably mounted about a vertical eccentric axis and with two rocker arms 5, 6, each mounted so as to oscillate about vertical axes and connected to the eccentric shaft 4 by means of coupling. 8 for the grinding jars 2, 3 attached.
  • a motor unit 10 coupled to the eccentric shaft 4 via a V-belt 9 is provided for torque transmission.
  • the eccentric shaft 4 is rotatably mounted on a base plate 11.
  • two bearing bolts 12, 13, around which the rockers 5, 6 are rotatably mounted are attached to the base plate 11.
  • the motor unit 10 is arranged on the base plate 11.
  • the motor unit 10 transmits a torque via the V-belt 9 to the eccentric shaft 4.
  • a rotary movement of the eccentric shaft 4 is via the coupling in an oscillatory movement of the rockers 5, 6 is converted.
  • the oscillation frequency can be between 3 and 50 Hz, preferably up to 35 Hz.
  • the oscillation path (double amplitude deflection) of the grinding bowl can be between 20 and 50 mm, preferably between 20 and 30 mm.
  • Temperature control, i.e. cooling or heating, of the grinding jars 2, 3 is possible via a temperature control device not shown in detail.
  • Each grinding jar holder is used to transport a temperature control medium, which can be liquid or gaseous, from a stationary part 14, 15 of the vibrating mill 1 to a grinding jar holder 7, 8 and to divert the medium from the respective grinding jar holder 7, 8 to the stationary part 14, 15 7, 8 connected to two temperature control lines 16, 17.
  • One of the two temperature control lines 16, 17 is provided for the supply line, the other of the two temperature control lines 16, 17 for the discharge of a gas or liquid temperature control medium, in particular liquid nitrogen, to the respective grinding jar holder 7, 8.
  • the temperature control lines 16, 17 are preferably designed as continuous uninterrupted pipelines.
  • the temperature control lines 16, 17 can consist, for example, of stainless steel or also of plastic or of stainless steel and / or plastic.
  • the structure of the line routing is the same for both grinding jar holders 7, 8, so that only one line routing is described below by way of example.
  • the line arrangement with the temperature control lines 16, 17 of a grinding jar holder 7 is designed mirror-symmetrically to the line routing of the second grinding jar holder 8.
  • each line 16, 17 has a compensating element 18, 19.
  • Each line 16, 17 is designed as a rigid pipeline over its entire length, the compensating element 18, 19 being formed by a pipeline section of the line 16, 17.
  • the relative movements result in an oscillating deformation of the pipe sections forming the compensating elements 18, 19, the pipe sections adjoining the compensating elements 18, 19 the respective line 16, 17 are comparatively less deformed.
  • the compensating elements 18, 19 as rigid pipe sections, it is possible to compensate for relative movements without using pipe parts connected to one another so that they can be rotated and / or pivoted relative to one another.
  • connection and accessory parts known per se from the prior art of assembly technology can be provided.
  • the connection of the temperature control lines as such i.e. decoupled from the compensation of relative movements, can be made via sealing means in order to enable a sealing connection between the respective line 16, 17 and the grinding bowl holder 7, 8 on the one hand and the stationary part 14, 15 on the other.
  • a temperature control device for controlling the temperature of the grinding bowl 2 by supplying and / or discharging a liquid or gaseous temperature control medium via the temperature control lines 16, 17 to the grinding bowl holder 7, 8.
  • the temperature control device has a conveying means for the temperature control medium and a container for receiving a temperature control medium.
  • a closed circulation of the temperature control medium via the temperature control line 16, 17 is also preferably provided.
  • Each grinding jar holder 7, 8 has a heat transfer element 20 connected to the temperature control lines 16, 17, which is plate-shaped in the embodiment shown and has an inner first plate part 21 and an outer second plate part 22 on the connection side of the heat transfer element 20.
  • the temperature control lines 16, 17 are on the outside of the outer plate part 22 is connected to the plate part 22 by means of connecting elements known per se from the prior art.
  • Fig. 5 shows the grinding jar holder 7 from Fig. 4 , wherein the outer plate part 22 is hidden. This clears the view of the inner plate part 21, in which a media channel 23 is formed for the temperature control medium to flow through.
  • the media channel 23 is hermetically sealed from the environment. It is also possible to screw the plate parts 21, 22 together.
  • FIG Fig. 7 the grinding jar holder 8 Fig. 2 after removal of the grinding bowl 3 is shown. How out Fig. 7 results, a flat contact surface 24 is provided on the upper side or the outer side of the plate part 21 facing the grinding bowl 2, which during the grinding process rests essentially over the entire surface against an outer bottom surface of the grinding bowl 2.
  • the heat transfer between the heat transfer element 20 and the grinding bowl 2 takes place exclusively by heat conduction via the contact surface 24 of the plate part 21 and the bottom surface of the grinding bowl 2.
  • the grinding jar holder 7, 8 of the laboratory mill 1 shown has in each case a holding bracket 25 which is firmly connected to a rocker 5, 6 and which is connected to a horizontal adjustable further retaining bracket 26 cooperates.
  • a clamping screw 27 By adjusting the clamping screw 27, the outer retaining bracket 26 can be braced against the inner retaining bracket 25 and thus a grinding jar 2, 3 can be braced horizontally between the retaining brackets 25, 26.
  • Clamping pieces 28 arranged in the corner areas are provided on the outer retaining bracket 26 which, when the grinding bowl 2, 3 is horizontally braced in the grinding bowl holder 7, 8, result in the grinding bowl 2, 3 being automatically deflected downwards against the inner plate part 21 of the heat transfer element 20 is pressed.
  • the clamping pieces 28 can be chamfered on the inside facing the plate part 21 or have a corresponding clamping slope.
  • two temperature sensors 29 for measuring the temperature on the heat transfer element 20 are preferably arranged.
  • the temperature sensors 29 are connected via electrical lines (not shown) to an evaluation unit of a measuring, control and / or regulating device (not shown) for automatically regulating the temperature of the grinding jar holder 6, 7.
  • the temperature sensors 29 can be provided for measuring the temperature of a plate part 21, 22 and / or can also intervene into the area of the media channel 23 via bores in the outer plate part 22 of the heat transfer element 20, so that a measuring sensor of the respective temperature sensor 29 enters the The temperature control medium guided inside the media channel 23 engages or is surrounded by the temperature control medium.
  • a temperature sensor 29 is provided for each heat transfer element 20.
  • the temperature sensors 29 are connected via electrical lines (not shown) to an evaluation unit of a measurement control and / or regulating device 30 (not shown) for automatic regulation of the temperature of the grinding jar holder 6, 7.
  • FIG. 8 and 9 two alternative methods for temperature control of two grinding jars 2, 3 of a laboratory vibrating mill 1, not shown in detail, are shown schematically.
  • a measuring, control and / or regulating device 30 is provided for the automatic regulation of the temperature of two grinding jar holders 7, 8 of the vibrating mill 1.
  • the temperature control takes place with the aid of at least two temperature sensors 29 with which the temperatures of two heat transfer elements 20 of the grinding bowl holders 7, 8 are determined during the operation of the vibrating mill 1 or during a grinding process.
  • the milling cups 2, 3 stand on the heat transfer element 20.
  • the heat is preferably transferred exclusively by conduction via contact surfaces that touch one another.
  • each grinding jar holder 7, 8 is connected to two temperature control lines 16, 17.
  • the temperature control lines 16, 17 of a grinding jar holder 7, 8 are connected to a rotary leadthrough 31 in order to enable the compensation of relative movements between the vibrating grinding jar 2, 3 and a stationary part of the laboratory mill 1.
  • Each rotary leadthrough 31 has a feed line 32 and a discharge line 33 for supplying the temperature control medium from a media container 34, for example a nitrogen tank, or for discharging the temperature control medium after flowing through the heat exchanger element 20 into a disposal device for the temperature control medium, in the present case an expansion pipe 35 connected.
  • Further temperature sensors 36 are provided for measuring the temperature of the medium in the discharge lines 33.
  • the further temperature sensors 36 are used in particular for error handling. With a measured value associated with each derivative 33, leakage can be concluded for each derivative 33 and associated heat transfer element 20 as well as the associated lines 32 and rotary feedthroughs 31. As a result, proper operation can be efficiently monitored using measured values without having to physically check the lines.
  • the line routing to the expansion pipe 35 finally takes place via a throttle 37.
  • the discharge lines 33 are brought together in order to lead them to the expansion pipe 35 via a throttle 37.
  • a temperature measurement with at least one sensor 36 is provided after the merging.
  • the temperature control medium is supplied from the media container 34 via the supply lines 32 to the respective rotary feedthrough 31 with a solenoid valve 38 as an actuator of a closed control circuit depending on the temperatures determined on the grinding jar holders 7, 8 via the temperature sensors 29.
  • the solenoid valve 38 is thus provided in order to effect the clocked addition or feeding of the temperature control medium into the supply lines 32 to the two grinding jar holders 7, 8.
  • the media flow temperature can be determined by means of a further temperature sensor 39.
  • the measuring, control and / or regulating device 30 has an evaluation or computer unit (not shown) with which the measured temperatures are compared with predetermined setpoints, the actuator of the then being based on the setpoint / actual value comparison Control loop is operated.
  • the timing of the solenoid valve 38 is changed accordingly as a function of the setpoint / actual value comparison.
  • Fig. 8 The described process sequence for controlling the temperature of the grinding jars 2, 3 via the temperature control of the grinding jar holders 7, 8 can also be provided in a corresponding manner when using other temperature control media.
  • the control method described also allows the temperature of the grinding bowls 2, 3 to be determined and controlled directly.
  • temperature sensors can be arranged on and / or in the grinding bowls 2, 3.
  • the data transmission between the sensors and an evaluation device of the measuring, control and / or regulating device can take place in a wired or wireless manner, for example via radio.
  • Fig. 9 the process sequence in an alternative process for controlling the temperature of the grinding jars 2, 3 is shown schematically.
  • two solenoid valves 38 are provided to the timing of the respective solenoid valve 38 as a function from the temperature measured on the respective grinding jar holder 7, 8. This makes it possible to cool or heat the grinding bowls 2, 3 to different degrees and to regulate the temperatures in and / or on the grinding bowls independently of one another.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Claims (9)

  1. Broyeur vibrant de laboratoire (1) comprenant au moins un support de bol de broyage (7, 8) monté de façon à pouvoir vibrer pour au moins un bol de broyage (2, 3) et comprenant un dispositif de contrôle de la température pour réguler la température du bol de broyage (2, 3) par l'alimentation et/ou l'évacuation d'un fluide de régulation de température liquide ou gazeux par le biais d'au moins une conduite de régulation de température (16, 17) connecté au support de bol de broyage (7, 8), caractérisé en ce que le support de bol de broyage (7, 8) comporte au moins un élément caloporteur (20) raccordé à la conduite de régulation de température (16, 17), dans lequel l'élément caloporteur (20) comporte au moins un canal de fluide (23) pour le passage du fluide de régulation de température et dans lequel la régulation de température d'un bol de broyage (2, 3) maintenu sur et/ou dans le support de bol de broyage (7, 8) est réalisée par transfert de chaleur entre le fluide de régulation de température transporté dans le canal de fluide (23) et le bol de broyage (2, 3) à travers une paroi de l'élément caloporteur (20) et en ce que l'élément caloporteur (20) est conçu comme une plaque de régulation de température, le bol de broyage (2, 3) pouvant être disposé avec une surface inférieure sur la plaque de régulation de température.
  2. Broyeur vibrant de laboratoire (1) selon la revendication 1, caractérisé en ce que le support de bol de broyage (7, 8) est conçu pour le contrôle de la température du bol de broyage (2, 3) sans contact avec le fluide de régulation de température.
  3. Broyeur vibrant de laboratoire (1) selon la revendication 1 ou 2, caractérisé en ce que la régulation de température est réalisée par transfert de chaleur entre le fluide de régulation de température et le bol de broyage (2, 3) par des surfaces de contact (24) de préférence directement l'une contre l'autre de l'élément caloporteur (20) et du bol de broyage (2, 3).
  4. Broyeur vibrant de laboratoire (1) selon l'une des revendications précédentes, caractérisé en ce que l'élément caloporteur (20) et le bol de broyage (2, 3) sont l'un contre l'autre sensiblement sur toute leurs surfaces de contact (24).
  5. Broyeur vibrant de laboratoire (1) selon l'une des revendications précédentes, caractérisé en ce que le transfert de chaleur entre l'élément caloporteur (20) et le bol de broyage (2, 3) est réalisé sensiblement exclusivement par conduction thermique par le biais des surfaces de contact (24) de l'élément caloporteur (20) et du bol de broyage (2, 3).
  6. Broyeur vibrant de laboratoire (1) selon l'une des revendications précédentes, caractérisé en ce que le support de bol de broyage (7, 8) est conçu pour serrer le bol de broyage (2, 3) contre l'élément caloporteur (20).
  7. Broyeur vibrant de laboratoire (1) selon l'une des revendications précédentes, caractérisé en ce qu'un dispositif de mesure, de commande et/ou de régulation servent de préférence à la commande et/ou à la régulation automatiques de la température du support de bol de broyage (7, 8) et/ou du bol de broyage (2, 3) et/ou de la température dans une chambre de broyage du bol de broyage (2, 3).
  8. Broyeur vibrant de laboratoire selon la revendication 7, caractérisé en ce qu'il est prévu au moins deux supports de bols de broyage (7, 8) et que le dispositif de mesure, de commande et/ou de régulation est conçu pour commander et/ou réguler de façon autonome les températures sur les supports de bols de broyage (7, 8) et/ou dans et/ou sur les bols de broyage (2, 3).
  9. Procédé de régulation de la température d'un bol de broyage (2, 3) pendant un processus de broyage dans un broyeur vibrant de laboratoire (1) selon l'une des revendications précédentes, dans lequel au moins une température pour un fluide de régulation de température est mesurée et commandée et/ou régulée sur le support de bol de broyage (7, 8) et/ou dans et/ou sur le bol de broyage (2, 3) et/ou sur et/ou dans une conduite de régulation de température (16, 17) afin de réguler la température du support de bol de broyage (7, 8) et/ou du bol de broyage (2, 3).
EP20771226.6A 2019-09-06 2020-09-03 Broyeur vibrant de laboratoire Active EP3840889B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE202019104933 2019-09-06
DE102019124894 2019-09-16
DE102019133975 2019-12-11
DE102020101523.2A DE102020101523A1 (de) 2019-09-06 2020-01-23 Laborschwingmühle
PCT/EP2020/074515 WO2021043854A1 (fr) 2019-09-06 2020-09-03 Broyeur vibrant de laboratoire

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Publication Number Publication Date
EP3840889A1 EP3840889A1 (fr) 2021-06-30
EP3840889B1 true EP3840889B1 (fr) 2021-11-17

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EP20771226.6A Active EP3840889B1 (fr) 2019-09-06 2020-09-03 Broyeur vibrant de laboratoire

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US (1) US20220347692A1 (fr)
EP (1) EP3840889B1 (fr)
CN (1) CN217431844U (fr)
DE (1) DE102020101523A1 (fr)
WO (1) WO2021043854A1 (fr)

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EP4237153A1 (fr) 2022-01-21 2023-09-06 Retsch GmbH Broyeur de laboratoire et porte-échantillon pour un broyeur de laboratoire
DE102022108580A1 (de) 2022-01-21 2023-07-27 Retsch Gmbh Labormühle und Probenhalter für eine Labormühle
DE202022101916U1 (de) 2022-01-21 2023-04-24 Retsch Gmbh Labormühle und Probenhalter für eine Labormühle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3307323A1 (de) * 1983-03-02 1984-09-06 F. Kurt Retsch GmbH & Co KG, 5657 Haan Feinzerkleinerungsvorrichtung fuer laboratoriumszwecke
EP2391454B1 (fr) 2009-01-28 2019-06-12 Retsch GmbH Broyeur de laboratoire muni de passages tournants pour le bol de broyage à alimenter en fluide
JP5979694B2 (ja) * 2012-06-15 2016-08-24 レッチェ ゲゼルシャフト ミット ベシュレンクテル ハフツング 三次元的に不釣り合いを相殺するボールミル

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CN217431844U (zh) 2022-09-16
WO2021043854A1 (fr) 2021-03-11
DE102020101523A1 (de) 2021-03-11
US20220347692A1 (en) 2022-11-03

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