EP3835048A1 - Machine à granuler pourvue de matrice à déplacement en hauteur - Google Patents

Machine à granuler pourvue de matrice à déplacement en hauteur Download PDF

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Publication number
EP3835048A1
EP3835048A1 EP20213589.3A EP20213589A EP3835048A1 EP 3835048 A1 EP3835048 A1 EP 3835048A1 EP 20213589 A EP20213589 A EP 20213589A EP 3835048 A1 EP3835048 A1 EP 3835048A1
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EP
European Patent Office
Prior art keywords
die
central axis
pellet
pan
roller
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Granted
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EP20213589.3A
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German (de)
English (en)
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EP3835048B1 (fr
Inventor
Johannes Wissing
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/22—Extrusion presses; Dies therefor
    • B30B11/228—Extrusion presses; Dies therefor using pressing means, e.g. rollers moving over a perforated die plate

Definitions

  • the invention relates to a pellet press according to the features in the preamble of claim 1, which is used to compact various materials, for example organic substances such as plastics, wood or the like, and to press them into pellet form.
  • non-generic pellet presses are known, with one or more pan rollers rolling in a circle around a central axis on the top of a die designed as an annular disk, namely around a shaft that is set in rotation and entrains the pan rollers and is aligned along the central axis.
  • a die designed as an annular disk, namely around a shaft that is set in rotation and entrains the pan rollers and is aligned along the central axis.
  • two to four pan rollers are distributed around the circumference of the central axis - for example the shaft.
  • the die has a large number of press channels which extend from a rolling surface through the die to an exit surface, for example in the form of upright bores through which the material to be pelletized is pressed through the die by the pan roller and compacted.
  • the design of the press channels is basically based on the material to be pelletized.
  • the surface of the die facing a pan roller is referred to as the rolling surface
  • the surface of a die facing away from a pan roller is referred to as the exit surface
  • the central axis is referred to as the central axis.
  • a separating mechanism for example a crushing, striking or cutting mechanism, is arranged below the die, which separates the compressed material exiting there in order to create the individual pellets with a corresponding length.
  • the separating mechanism can be rotatably mounted relative to the die, in such cases the separating mechanism is often driven together with the circular movement of the pan roller rotating around the central axis, for example by the same shaft aligned along the central axis, in which case the die is only supported on one side. on the radially outer side facing away from the central axis
  • the pan roller In order to push the material to be pelletized through the press channels of the die, the pan roller exerts high pressure on the die or on the material on the die, which can lead to deformation, for example to a bending of the die. The deflections cause different and accordingly undesirable pelleting results across the radius of a die. If the deformation continues, the die can fail by breaking, which is associated with considerable expense.
  • Essential pelleting results relate to the amount of pellets produced per unit of time and the quality of the pellets, in particular with regard to compression, length and dimensional stability, the quality criteria should only vary slightly within a production batch.
  • properties of the material to be pelletized can influence the pelletizing results.
  • high humidity or a coarse structure can lead to material to be peeled resting on the die and being compressed in layers instead of being pressed through the press channels.
  • pent-up material can block the rotation of the pan rollers around the central axis, so that material to be pelletized is not pressed into the press channels, but simply pushed over them, which, for example, affects the efficiency of pellet production.
  • the temperature of the material to be pelletized or the temperature of the die and the pan rollers can be increased due to friction, which can be disadvantageous for the pelletizing results.
  • pan rollers which are conical in shape.
  • the running surface forming the circumference of a pan roller, hereinafter referred to as the roller shell, and the rolling surface of the die are provided with corresponding toothing, so that the pan rollers are inevitably set in rotation around their respective central axes as they move around the central axis, as they are rotated with the Comb the teeth of the die.
  • the production of a pan roller and a die with corresponding toothing is complex and cost-intensive.
  • Cooling channels in the die are inter alia intended to carry a coolant in order to protect the die from overheating.
  • the production of such matrices and a corresponding pan roller is technically demanding and very cost-intensive.
  • cooling channels in the die can reduce the strength and rigidity, with the result that the pelletizing results can be reduced.
  • the invention is based on the object of proposing a pellet press, avoiding the disadvantages described above, which enables long service lives and efficient pellet production, in particular with regard to a high amount of pellets per unit of time and a good pellet quality, even if material is to be pelletized which has a coarse structure and a high level of moisture.
  • the invention proposes that the die is not arranged in a stationary manner at a constant level in the pellet press, but rather is mounted in a height-adjustable manner.
  • the gap or the distance between the roll shell forming the circumference of a pan roll and the rolling surface of the die can be adjusted as proposed and thus, inter alia, adaptable to the material to be pelletized.
  • blockages can be avoided which, for example, form as a result of a material jam in front of a muller roller and can lead to the relevant muller roller blocking, so that the muller roller no longer rolls on the die, but rather slides over the die.
  • the distance can be optimally adapted to the material to be processed in order to obtain optimal pelletizing results with pellets that are as homogeneous as possible.
  • it can be advantageous, for example, to increase the distance if fiber-containing material is to be pelletized, in particular for pelletizing material which contains long fibers.
  • a height-adjustable die can contribute in particular to extending the service life or maintenance intervals of the pellet press. For example, deformations of the die caused by material congestion can be avoided, so that the die is less prone to breakage. Furthermore, the rolling surface can in principle be reworked with increasing wear, wherein a post-processing-related material removal from the rolling surface can be compensated for by the height adjustability.
  • the proposed pellet press has an adjusting device with which a precise height adjustment is possible, a precision of less than or equal to 1 mm, in particular less than or equal to 0.1 mm, being provided.
  • the adjusting device can advantageously work continuously.
  • a shaft is arranged along the central axis, with which the central axis of the pan roller is connected in a rotationally fixed manner, so that the shaft drives the circular movement of the pan roller rotating around the central axis. It can be particularly advantageous to connect the central axes of a plurality of pan rollers to a pan head which is, for example, non-rotatably connected to a shaft aligned along the central axis.
  • a shaft driving the pan roller along the central axis enables, on the one hand, an extremely compact design, so that space can be saved in a production facility.
  • drive energies can be reduced and the forces transmitted to the drive axle can be reduced.
  • larger die diameters can generally be constructed so that, for example, pellet production can be increased.
  • Maintenance intervals can also be extended by reducing the stress on components during operation as proposed.
  • a spindle forms the adjusting device, via which the die can be adjusted in height.
  • the spindle directly supports the die or that one die bearing is arranged which connects the die to the spindle in a movement-effective manner.
  • spindles it is particularly advantageous to arrange several spindles, so that in one embodiment several spindles distributed circumferentially, such as three spindles, which are each offset by 120 ° from one another, support a die or a die bearing.
  • provision can be made, for example, to electrically drive a rotatable nut or a threaded sleeve arranged at a fixed height, so that a spindle rod guided therein, for example a trapezoidal thread spindle, depending on the direction of rotation, moves up or down depending on the rotation of the nut moves and with the spindle bar the die.
  • a spindle rod guided therein for example a trapezoidal thread spindle, depending on the direction of rotation
  • provision can be made to arrange a spindle rod at a fixed height and to drive it in a rotationally movable manner, so that a nut or threaded sleeve guided on the spindle rod is caused by the rotational movement of the spindle rod is moved upwards or downwards depending on the direction of rotation and the die with the nut.
  • a spindle-based version of the height adjustability is advantageous because it is not very sensitive to dirt.
  • a spindle-based design is characterized by a high level of basic rigidity, so that even a large-sized die can generally be supported with little deformation.
  • the spindle can have a safety device that fixes a set height level and thereby reduces pressure-related, essentially vertical yielding of the die, whereby, for example, an undesired damping effect can be minimized, which is caused by a predominantly elastic deformation of the die bearing and which affects the material to be pelletized, the pressure acting on the material is reduced unintentionally
  • a spindle rod with a section-wise external thread can be reversibly fixed in a clamping-guide bushing.
  • the spindle has a guide bush through which the spindle rod is guided.
  • the inside diameter of the guide bush is significantly larger than the outside diameter of the spindle rod, the spindle rod not having a thread in the section corresponding to this section and the spindle rod being surrounded by a free space in this section.
  • the free space is essentially filled by an additional component, which is referred to as a clamp bracket.
  • the clamping holder can encompass the spindle rod circumferentially and rest axially in the longitudinal direction with a radially extending stop of the guide bushing arranged outside the free space. Between the clamp bracket and the guide bushing, there is another free space known as an annular space, which is filled with a hydraulic fluid.
  • the internal pressure in the annulus is increased hydraulically so that the clamping bush is elastically deformed and pressed against the spindle rod.
  • the spindle rod is fixed in height in particular with respect to a pressure load acting in the longitudinal axial direction. Every lifting movement of the spindle rod requires the hydraulic clamping to be released beforehand.
  • a spindle-related support of the die can improve the pelletizing result.
  • larger die dimensions and thus a larger amount of pellets can be achieved.
  • one or more transducers can advantageously be provided which detect the height of the die, for example in the area of a spindle, for example to measure a travel path of the die, from which the distance between the rolling surface and the roll shell can be derived.
  • the nuts of the spindles can, for example, be adjusted in such a way that the die assumes exactly the same height in the area of all spindles, which means that deformations of the die can be reduced and service lives extended and pelleting results improved.
  • a measured value sensor for indirect detection of the die height, provision can be made for a measured value sensor to be arranged which, for example, detects the rolling resistance of a roller roll rolling on the rolling surface.
  • a control unit can, for example, reduce the storage height of the die when high rolling resistances are detected by the transducer.
  • a pan roller is not assigned a separate drive which sets a pan roller in rotation about the central axis, while the pan roller rotates around the central axis in a circle.
  • a kind of forced drive of a pan roller can advantageously be provided, which inevitably sets a pan roller in rotation around its respective center axis as it moves around the central axis, without direct contact between the roller shell and the rolling surface of the die or the material to be pelletized being required. It is particularly advantageous that, for example, no additional, electrically operated drive unit is provided for this.
  • the proposed positive drive is a feature which can significantly contribute to extending both the pellet quality and the service life of a pellet press, whereby such a positive drive is basically very easy to produce and can also be retrofitted to pellet presses that are already in operation without great effort.
  • the design of the present positive drive can represent an independent, innovative development which, taken by itself, can significantly improve the pellet production and as a result is inter alia commercially applicable.
  • the pan roller has a toothing, preferably radially on the inside with respect to the central axis, for example on the roller jacket or on a disk next to the roller jacket, which meshes with a toothed circle that is arranged close to the die, for example on a bearing housing of the Drive shaft or on a support that carries the die.
  • the toothed circle is also arranged radially on the inside on or on the die, for example on the roll-off surface.
  • a toothed circle meshing with the toothing for example on the bearing housing of the drive shaft or on a support is arranged, can be particularly advantageous because the toothing and tooth circle can engage with each other independently of the height adjustment of the die, so that an optimal power transmission can take place and wear of the toothing is minimized, in particular wear that can be caused by varying depths of engagement of the meshing toothing .
  • the toothed circle is arranged on the die, which is basically very easy to retrofit for existing pellet presses
  • the maximum adjustable distance between the roller shell and the rolling surface should advantageously be taken into account when designing the intermeshing toothed members of the toothing or the toothed circle, especially for the The depth of engagement of the toothed links in order to be able to guarantee low-disruption and low-wear operation of a positively driven pan roller.
  • a gear wheel arrangement located radially on the inside has the advantage that less material has to be used and that contamination from the material to be pelletized is significantly less pronounced.
  • a narrow configuration is advantageous in each case, so that neither the toothing nor the toothed circle are complex to manufacture and, as a result, a forced rotation of the pan roller can be achieved in an economically advantageous manner and the pan roller cannot block due to a material jam.
  • a positive drive has the effect that sliding or sliding of a pan roller over the material to be pelletized can be prevented. Overall, the pelletizing performance can be qualitatively and quantitatively improved by means of the forced drive and the service life of the pellet press can be extended.
  • the temperature of both machine components and the temperature of the material to be pelletized are essential factors affecting pellet production.
  • a die can be tempered, for example by the heat conduction the components of a pellet press, which are usually made of steel, are used. Accordingly, it can advantageously be provided that at least one support, which carries or holds the die, is temperature-controlled, in that the support has temperature-control channels through which fluid can flow.
  • the design of a support through which a fluid can flow in the function of an indirect die temperature control is a development which, taken by itself, can make a significant contribution to improving pellet production and can therefore be used, inter alia, without further ado.
  • a cooling fluid can advantageously be passed through a temperature control channel in order to be able to dissipate any excess thermal energy from a component or from an assembly, in particular from the die.
  • a temperature control of this kind may firstly be necessary in order to be able to extend the service life, for example.
  • the operating temperature of the die can influence the plasticization of a material to be pelletized and thereby act on its compression and on the cohesive forces acting in a pellet and thus in particular on the dimensional stability of a pellet.
  • Thirdly, by regulating the temperature of the die, clogging of the press channels caused by temperature-sensitive materials can be prevented.
  • the die can tend to deform elastically and reset itself with each revolution of the pan rollers.
  • the mechanical stability of the die is not impaired to the extent that any fluid channels can represent lines of weakness in the die.
  • the present proposal can help save material compared to a known die temperature control while maintaining the same elasto-mechanical properties, inter alia in relation to the die itself or in terms of any necessary reinforcements or supports of the die to strengthen a die.
  • both the radially outer and the radially inner support can be temperature-controlled by the arrangement of temperature-control channels, so that accordingly a special efficient temperature control of the die is made possible and the pelletizing results can also be improved.
  • a temperature control fluid can first flow through a temperature control channel, which can be arranged essentially in the central axis, and then through a temperature control channel, which is arranged, for example, in the central axis of the pan roller, into the pan roller itself.
  • a suitably configured fluid can advantageously also function as a lubricant for the pan rollers.
  • a separating mechanism is arranged that is functionally facing the exit surface of the die, for example a crushing, striking or cutting mechanism, which has the function of closing the compacted material, the so-called compacts, emerging from the exit surface of the die cut through to create the individual pellets of the appropriate length.
  • the distance between the cutting edge of a cutting tool of the cutting unit and the exit surface of the die defines the effect, namely that the emerging compacts are predominantly broken when the distance between the cutting edge and the exit surface is increased, and on the other hand, the compacts are predominantly cut at a small distance become.
  • the distance can be determined relative to the exit surface, for example, by installing the cutting tools on the cutting mechanism.
  • the separating mechanism can advantageously be mounted such that it can rotate about the central axis.
  • the speed of the separating mechanism is independent of the speed of the circular movement of the pan roller rotating around the central axis, the latter speed being to be distinguished from a further speed, namely the speed at which the pan roller around the center axis over the roller shell rotates rolling on the rolling surface of the die.
  • An independent speed of the separator is advantageous, for example, in order to enable an adaptation to the material to be pelletized and to be able to adjust the length of the pellets precisely, whereby the pelletizing result can be improved.
  • the separating mechanism is driven independently of the rotational movement of the pan roller so that, in contrast to known practice, for example, a connection of the separating mechanism close to the die to a shaft driving the revolution movement of the pan roller can be dispensed with.
  • a separate drive for the separating mechanism is advantageous because the separating mechanism does not have to be driven by a shaft arranged along the central axis itself, which would collide with a radially inner support of the die. Rather, the separation mechanism can be driven radially from the outside, for example, without colliding with a radially inner support.
  • the die can be supported both along its radially outer edge and in its central, radially inner area, for example in a ring around the upright axis, so that deflections of the die can be reduced or largely avoided.
  • bending of the die can result in pressure differences between the pan roller and the material to be pelletized or the die, which can impair the pelletizing result.
  • Particularly pronounced deformations of a die can also cause failure by breaking the same.
  • the pellet press has a temperature sensor which detects the pellet temperature, for example after the pellets have been shortened to pellets. Further information on the pellet quality and the operating parameters of the pellet press can be derived from information about the pellet temperature.
  • An advantageous control unit can, with appropriate storage of temperature data and correlated data with regard to the pellet quality and operating parameters, an automatic Adjust the settings of the pellet press, for example by adjusting the height of the die.
  • Fig. 1 is a perspective view of an embodiment of a pellet press 1 shown obliquely from the side, which makes it possible to produce pellets in large numbers and of high quality on the one hand.
  • the design enables the loads that reduce the service life to be minimized.
  • the control variables that are decisive for this such as the distance between the roller shell 21 of the pan roller 20 and the rolling surface 31 of the die 30, the temperature of machine components and the material to be pelletized, and the mode of operation of a separating mechanism 11 for shortening pellets, can be set individually and independently of one another.
  • a shaft 50 is arranged along a vertical central axis 2, to which a roller head 3 is connected in a rotationally fixed manner.
  • Three pan rollers 20 are each connected to pan head 3 via a central axis 22, the pan rollers 20 being mounted such that they can rotate about central axis 22 and roll on the rolling surface 31 of the non-rotatable die 30 designed as an annular disk when the shaft 50 driving the pan rollers 20 in Rotation is offset.
  • the die 30 has a multiplicity of press channels 32 which extend from the rolling surface 31 as bores through the die 30 to the exit surface 33.
  • the material to be pelletized is first fed to the pellet press 1 until it rests on the rolling surface 31 of the die 30.
  • the pan rollers 20 are set in rotation and roll over the roller shell 21 on the rolling surface 31 of the die 30.
  • the pan rollers 20 press on the material to be pelletized or on the die 30, with the result that the material to be pelletized is first pressed into the press channels 32.
  • the material located therein is compacted and driven forward in the press channels 32 until the compacted material is finally driven out of the die 30 as a compact via the exit surface 33 due to pressure.
  • the die 30 is arranged non-rotatably resting on a die bearing, the die bearing, inter alia, being composed of an outer support ring 34 and an inner support ring (35, in Fig. 1 not shown) and the support rings are carried by an adjustment plate 36. Between the outer support ring 34 and the inner support ring 35 a rotationally movable separating mechanism 11 is arranged, which rotates in a circle around the shaft 50 below the die 30, is mounted on the adjustment plate 36 and serves to create the pellets of the corresponding length from the pellets .
  • the separating mechanism 11 is formed by a crushing or cutting mechanism, which has cutting tools which, in principle, cause the compacts to be shortened to pellets close to the exit surface.
  • the effect of the separating mechanism 11 can be influenced via the distance between the cutting edge of the cutting tool and the exit surface 33, in such a way that the emerging compacts are predominantly broken when the The distance between the cutting edge and the exit surface 33 is widened, whereas the compacts are predominantly cut at a small distance. The distance is determined by the installation of the cutting tools on the separating mechanism 11 relative to the exit surface.
  • the separating mechanism 11 is set in rotation independently of the shaft 50 by the separating mechanism drive unit 12, the separating mechanism drive unit 12 also being arranged on the adjustment plate 36. This is particularly advantageous because, on the one hand, a height adjustment of the die 30, a spacing of the cutting edge from the exit surface 33 is not influenced.
  • the separate separator drive unit 12 enables the speed of the separator 11 to be independent of the speed of the shaft 50, so that a separating effect can be adapted to the material to be pelletized and the length of the pellets can be precisely defined without having to influence the pressing of the pellets.
  • the separating mechanism drive unit 12, which is independent of the shaft 50 enables the die 30 to be supported both radially inward and radially outward, which overall reduces deformations of the die 30, for example.
  • the pellets After being shortened, the pellets are fed to an ejection chute 5.
  • a temperature sensor that detects the pellet temperature is arranged in the discharge chute 5.
  • Information about the pellet temperature can be used to derive information about the pellet quality and the operating parameters of the pellet press 1.
  • a control unit can automatically adjust the settings of the pellet press, for example by adjusting the height of the die 30.
  • a bearing frame 51 is arranged in a parallel alignment, which essentially has a central recess, inter alia, for a shaft bearing housing 54 through which the shaft 50 is guided transversely to the bearing frame 51.
  • a shaft bearing housing 54 Around the shaft bearing housing 54, three spindles 40 are circumferentially distributed and offset from one another by 120 ° in the function of adjusting devices, the axes of rotation of the spindles being aligned parallel to the shaft 50 and the bearing frame 51 having further recesses through which the spindles 40 are passed.
  • the adjusting plate 36 is supported on the three spindles 40 so that a vertical lifting movement of the adjusting plate 36 and thus a height adjustment of the die 30 can be brought about by adjusting the spindles 40.
  • the spindles 40 are driven via an adjusting motor 7 with an integrated brake and flange-mounted gear, the spindles 40 being connected to one another and to the adjusting motor 7 via a triplex sprocket drive 8.
  • Several deflection sprockets 9 increase the wrap angle on the spindles 40 for better power transmission.
  • a chain tensioning wheel 10 ensures sufficient chain tension.
  • the height of the pan rollers 20 is fixed relative to the bearing frame 51, so that a spacing between the roller jacket 21 and the rolling surface 31 can only be defined by adjusting the height of the die 30.
  • Each spindle 40 has a measured value sensor 4 which precisely detects the height of the die 30 or a change in height.
  • the ascertained height data are compared with one another via a control unit in order to ensure uniform height positioning of the die 30 and, if necessary, to draw the user's attention to the fact that readjustment or maintenance is required. In the course of this, one-sided, unevenly distributed loads on the die 30 can be recognized early and longer operating times can be achieved.
  • the spindle 40 in the present case must have high load-bearing capacities. Taking these requirements into account is in Fig. 2 a side view of a spindle 40 from Fig. 1 shown as an example in cross section. It can be seen that a non-rotating spindle rod in the form of a trapezoidal thread spindle 41 is guided through a rotatable nut 42, a spindle bearing 43 holding the nut 42.
  • the nut 42 is effectively connected to the triplex sprocket drive 8 for power transmission, in such a way that the triplex sprocket drive 8 sets the nut 42 in rotation, causing an upward or downward stroke movement of the trapezoidal thread spindle 41, depending on Direction of rotation of the nut 42.
  • the trapezoidal thread spindle 41 can be reversibly fixed in a clamping guide bushing 44.
  • the spindle 40 has a guide bushing 46 through which the trapezoidal thread spindle 41 is guided.
  • the inner diameter of the guide bushing 46 is significantly larger than the outer diameter of the trapezoidal thread spindle 41, so that the trapezoidal thread spindle 41 is surrounded by a free space in this section, the trapezoidal thread spindle 41 not having an external thread in this section having.
  • the free space is filled by an additional clamping bracket 45 which on the one hand surrounds the trapezoidal thread spindle 41 circumferentially and on the other hand rests axially in the longitudinal direction with a radially extending stop of the guide bushing 46 arranged outside the free space.
  • an annular space 47 Between the clamping bracket 45 and the guide bushing 46 there is a free space designated as an annular space 47, which can be filled with a hydraulic fluid.
  • the internal pressure in the annular space 47 is increased hydraulically, so that the clamping bracket 45 is elastically deformed and is pressed against the trapezoidal thread spindle 41.
  • the trapezoidal thread spindle 41 is fixed in height in particular with respect to a pressure load acting in the longitudinal axial direction.
  • Fig. 3 is a side view of a portion of a pellet press 1 shown in cross section.
  • the pan rollers 20 each have a bevel gear disk with toothing 24 which, as bearing caps of the pan rollers 20, lie radially on the inside.
  • the toothing 24 meshes with a toothed circle 56 which is arranged close to the die on a shaft bearing cover 52 of the shaft 50, the toothed circle 56 being designed similar to a bevel gear with toothing.
  • the shaft bearing cover 52 rests on a shaft bearing bushing 53 in which the shaft bearing 55 is arranged.
  • the meshing of the toothing 24 of the pan roller 20 in the toothed circle 56 takes place independently of a height adjustment of the die 30, so that the depth of engagement is essentially constant. As a result, the power transmission is optimized and the wear of the toothing 24 or the toothed circle 56 is minimized.
  • the positive drive shown has the effect that the pan rollers 20 inevitably rotate around their respective central axis 22 as they travel around the shaft 50 as soon as the shaft 50 is set in rotation while driving the pan rollers 20.
  • the speed of rotation of the pan rollers 20 is proportional to the speed of rotation of the shaft 50.
  • the pan rollers 20 rotate even when there is no direct contact between the roller shell 21 and the Rolling surface 31 of the die 30 or with the material to be pelletized.
  • the pellet press 1 shown in detail has various features which serve both for temperature control and also for lubrication - in particular moving components - of the pellet press 1.
  • the shaft 50 has a first central bore which forms a temperature control channel and into which a thermally insulated inner tube is let. Another bore, which forms a second temperature control channel, is arranged close to the first bore; for the sake of clarity, this is shown in FIG Fig. 3 but not shown.
  • the first temperature control channel serves as an inlet 14 for a temperature control medium, in particular for a fluid temperature control medium
  • the second temperature control channel forms a corresponding return 15, which serves to lead a temperature control medium out of the shaft 50, for example a cooling fluid that absorbs thermal energy from a component Has.
  • the shaft 50 has a rotary lead-through connection 6 ( Fig. 1 ), through which a temperature control medium can basically flow, while the shaft 50 rotates.
  • a temperature control medium is fed to the roller bearing 23 of a pan roller 20 via the inlet 14.
  • the temperature control medium effects cooling, for example of the component, which can have a direct effect on the roll shell 21, so that on the one hand a temperature acting on the material to be pelletized can be influenced and on the other hand the service life of the component can be extended.
  • Indirect temperature control of the die 30 takes place via an inner ring channel 16, which is arranged in the inner support ring 35, and via an outer ring channel 17 arranged in the outer support ring 34, the ring channels allowing fluid to flow through them and each of which is assigned an O-ring seal 18 on both sides is.
  • a temperature control medium can be introduced into the two ring channels in order to be able to influence the operating temperature of the die 30 and thereby ultimately the production process of the pellets and the service life of the die.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP20213589.3A 2019-12-12 2020-12-11 Machine à granuler pourvue de matrice à déplacement en hauteur Active EP3835048B1 (fr)

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DE102019134210 2019-12-12

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EP3835048A1 true EP3835048A1 (fr) 2021-06-16
EP3835048B1 EP3835048B1 (fr) 2024-05-08

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EP20213602.4A Withdrawn EP3835049A1 (fr) 2019-12-12 2020-12-11 Élément de conduite et dispositif de mise en température
EP20213589.3A Active EP3835048B1 (fr) 2019-12-12 2020-12-11 Machine à granuler pourvue de matrice à déplacement en hauteur

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115339143A (zh) * 2022-10-17 2022-11-15 昌乐县人民医院 一种片质药物加工装置

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR891152A (fr) * 1942-07-10 1944-02-29 Olier Sa Ets A Machine à agglomérer
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DE3313012A1 (de) 1983-04-12 1984-10-18 Münch Edelstahl GmbH, 5600 Wuppertal Flachbettpresse
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