WO2023084481A1 - Gravimetrische dosiereinheit mit einer magnetischen verbindung zwischen der förderschnecke und ihrer halterung - Google Patents
Gravimetrische dosiereinheit mit einer magnetischen verbindung zwischen der förderschnecke und ihrer halterung Download PDFInfo
- Publication number
- WO2023084481A1 WO2023084481A1 PCT/IB2022/060935 IB2022060935W WO2023084481A1 WO 2023084481 A1 WO2023084481 A1 WO 2023084481A1 IB 2022060935 W IB2022060935 W IB 2022060935W WO 2023084481 A1 WO2023084481 A1 WO 2023084481A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conveyor
- holder
- screw
- shaft
- shank
- Prior art date
Links
- 239000013590 bulk material Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims 2
- 238000005452 bending Methods 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
- G01G11/003—Details; specially adapted accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/32—Adaptations of bearings or couplings for supporting and connecting screws
Definitions
- the present invention relates to a gravimetric dosing unit for bulk materials according to the preamble of claim 1, a conveyor arrangement for a doser according to the preamble of claim 17 and a screw conveyor according to the preamble of claim 18.
- the gravimetric feeders also known as loss-in-weight feeders, are widespread and used in many branches of industry for all kinds of flowable or pourable materials, i.e. bulk goods, insofar as these can be conveyed at all by a gravimetric feeder.
- the pourable materials are discharged into a container, from this into a base unit below it and metered out of the dosing unit by a conveyor in the base unit.
- the doser is on a scale, so the weight registered by the scale is the gross weight, i.e. the known and constant weight of the components of the doser (tare) plus the variable weight of the bulk material actually present in the container and in the base unit (net weight).
- the scales continuously register the weight loss of the entire feeder during operation of the feeder, and thus the weight loss of the bulk material in the feeder due to the constant weight of the feeder, so that a control of the feeder can determine the output actual mass flow of the pourable material from the weight loss and in comparison with a predetermined desired mass flow rate, the output conveyor can be regulated accordingly in order to minimize the difference between the actual and the desired mass flow rate.
- a very precise regulation of the output mass flow can be necessary, for example in the pharmaceutical sector or if color pigments are to be mixed in in industrial production.
- the target mass flow can be small, for example in the case of the color pigments mentioned and in the manufacture of medicines (e.g. less than one kilogram per hour), or large, for example in the field of plastics production and in mining (e.g. more than 1 1 per hour). precise dosing may be necessary even with such delivery rates.
- Precise scales of all kinds are often used as scales, with a resolution over their weighing range of 1:100,000 and more, including those with vibrating wire sensors, such as those under the designation SFT-III, SFT-II-M and SFT-II- Lvon Coperion K-Tron are known. These scales have a resolution of up to 1:4000000, so that precise dosing can be carried out without any problems even with a container content of several hundred kilos and a conveyance of several tons per hour. If, for example, a resolution of 1:1,000,000 is used, the weight can still be recorded with an accuracy of 1/10 g and then used for dosing with a weighing capacity of 100 kg.
- conveyors that are not vertical, i.e. horizontal or arranged at an angle, are preferably used, as this allows the fluid-dynamic behavior of the bulk material to be controlled somewhat better, since, among other things, gravitation does not act in the conveying direction with horizontal conveyors and so does not bother.
- Longer screw conveyors are well suited as horizontal conveyors, because with a suitable drive, the actual delivery rate can be varied easily and without delay via their speed and the distance from the mass flow from the hopper to a collection container outside the dosing unit can be easily bridged without that there are disadvantages in the actual mass flow itself.
- the screw conveyor in a dosing device of the type mentioned is clamped at an end shaft in a holder, the holder supporting the screw conveyor in an exactly aligned manner in its conveying pipe and rotating at the speed required for dosing.
- the bracket transmits changing, even high, torques with constantly changing speeds to the screw conveyor precisely and within the required scope without play.
- conveyor arrangements which have become known which have a driven drive mandrel, for example a gear connected to a drive motor, as a holder the screw conveyor has a receiving opening on the face side for receiving the drive mandrel, and can thus be slipped onto it.
- a closure in the manner of a bayonet closure which locks the conveyor screw on the drive mandrel for dosing operation in a position-proof and twist-proof manner.
- a crescent-shaped locking element extending over a part of its cross section is inserted in the receiving opening of the conveyor screw, and the drive mandrel is adapted over its length in cross section in the opposite direction to the locking element, so that the conveyor screw, despite its locking element, still fits onto the drive mandrel is attachable.
- a groove is provided in the drive mandrel, into which the locking element can be inserted via a suitable rotation of the screw conveyor, so that it locks in the manner of a bayonet lock.
- the disadvantage of this arrangement is that the production of the conveyor arrangement is expensive with regard to the accuracy required for dosing.
- the groove in the drive mandrel must be formed with a low tolerance for high dosing accuracy, which may require the groove to be produced by electroerosion.
- the load-safe fixation of the locking element in the opening of the screw conveyor is difficult since the slightest welding error can render the screw conveyor unusable during the required welding process.
- connection itself can be produced cheaply, which opens up the possibility of also cheaply producing additional features associated with the magnetic connection in the conveyor arrangement.
- the magnetic connection saves time in maintenance, when cleaning or when changing a screw conveyor.
- FIG. 1 schematically shows a gravimetric dosing unit 1 of the prior art for bulk materials of the type mentioned above.
- the hopper 3 is filled with bulk material, which falls here via a transfer hopper 7 (which can also be omitted) of the base unit 4 into a conveyor container 8, through which a conveyor screw 15 protrudes, which transports the bulk material from right to left into a discharge line 10 promotes, via which the bulk material arrives in a further conveyor section 11, indicated by dashed lines, for further processing.
- the funnel is refilled before empty.
- the base unit 4 includes a drive motor 12 which drives the screw conveyor 15 via a gear 13, which in turn is attached to the mandrel of a holder 14 and runs after the delivery container 8 through a delivery pipe 9 to the output line 10.
- the conveyor screw 15 forms a conveyor arrangement 16 together with the holder 14.
- the conveyor container 8 and the conveyor pipe 9 are shown in section, so that the conveyor screw 15 is visible.
- the base unit 4 also includes the output line 10 , which is mechanically decoupled from the further conveyor section 11 via a bellows 17 and pneumatically via a pressure compensation element 18 , so that the weighing of the dosing unit 2 cannot be influenced by the further conveyor section 11 .
- the dosing device 2 rests on supports 19 on the scales 5, which thus calculate the weight of the dosing device 2 and the weight of the bulk material in the hopper 3 (and in the base unit 4). register. If, in gravimetric operation of the dosing unit 2, bulk material is discharged into the further conveying section 11 by the rotation of the screw conveyor 15, its weight is reduced accordingly, which is registered by the scales 5 and in turn evaluated by a controller (not shown) to relieve the figure.
- the weight reduction corresponds to the output actual mass flow of bulk material, which must be tracked to the target mass flow.
- the control via the drive motor 12 continuously corrects the speed of the conveyor screw 15 in accordance with a control algorithm that is fundamentally known to the person skilled in the art.
- the flow behavior of the various bulk materials can be unproblematic or highly complex.
- Agitators provided in the hopper can dampen such effects, but cannot eliminate them. Temperature, humidity, etc. can affect these parameters depending on the type of bulk material.
- the speed of the screw conveyor must be regulated in coordination with the above-mentioned possible resolution of the scales as quickly as possible, precisely and with the sometimes strongly changing torque (with corresponding axial load on the screw conveyor 15).
- This requires precise clamping of the screw conveyor 15 in the holder 14 and is one reason why, as mentioned above, the prior art provides, for example, a complex bayonet lock.
- Figure 2 shows a section through an area of a dosing unit 1 or a dosing device 2 with a conveyor arrangement 25 according to the invention.
- the area shown in Figure 2 corresponds to the dashed area 19 of the dosing unit 1 shown in Figure 1.
- a conveyor screw 26 can be seen with a conveyor helix 26 ′, here with a small diameter (for a conveyor screw with a large diameter see FIG. 5), which protrudes through a conveyor container 8 which is arranged on a transfer funnel 7 .
- the screw conveyor 26 is clamped with a shaft 27 in a holder 28 which in turn is rotatably mounted in a housing 30 via ball bearings 29 , the housing 30 in turn being arranged on the gear 13 .
- the bracket 28 is directly on a gear 31 of the Gear 13 screwed.
- the motor 12 thus drives the holder 28 and thus the screw conveyor 26 via the gear wheel 31 of the gear mechanism 13 .
- the holder 28 is rotatably mounted in a housing 30 via ball bearings 29 and this housing 30 is arranged on a gear 13 of the drive for the conveyor screw 26, with a gear wheel 31 of the transmission 13 is directly connected to the bracket 28.
- the holder 28 has an opening 32 into which the shank 27 of the screw conveyor 26 can be pushed in the axial direction, so that the opening 32 receives the shank 27, with a magnetic element embodied here as a permanent magnet 34 being provided on the bottom 33 of the opening 32 , which is preferably located in a bore 35 in the bottom 33 of the opening 32 and is more preferably glued there.
- a commercially available permanent magnet can be used as the magnet 34, for example a neodymium magnet.
- a magnetic element here preferably designed as a permanent magnet 36, which is arranged, e.g. glued, in the shank 27, on the front side, here in a bore 37, and also preferably as a permanent magnet, for example as a neodymium magnet.
- the screw conveyor 26 has a shaft 27 provided for interaction with the holder 28 and the holder 28 has an opening 32 for receiving the shaft 27, and the end face facing the holder 28 of the shaft 27 and the bottom 33 of the opening 32 each have a magnetic element, preferably a permanent magnet 34,36 each.
- the magnets 34, 36 form a magnetic connection between the conveyor screw 26 and the holder 28 of the conveyor arrangement 25.
- the Connector is designed as a magnetic connection.
- the magnetic connection is preferably designed in this way is that the fixing magnetic force acts on the screw conveyor 26 in the axial direction and pulls it against the holder 28 .
- the shank 27 of the screw conveyor 26 is delimited at the beginning of the shank 27 with a stop element which is preferably designed as a flange 38 (here protruding radially). More preferably, the stop element strikes the mount 28 and thus determines the axial position of the screw conveyor 27 that is operationally inserted into the mount 28.
- the depth of penetration of the shaft 27 into the mount 28 (or the bearing of the flange 38) is preferably dimensioned such that During operation of the conveyor arrangement 25, a gap 39 remains between the magnets 36, 34, which protects the magnets, which are usually made of a brittle material, from hitting one another when they are inserted. In principle, however, it is also possible not to provide a gap. For another advantage of the gap 39 see below:
- the magnetic connection fixes the conveyor screw 26 via the gap 39 with an axially acting force of 5 N to 20 N, preferably 8 N to 12 N, very preferably 9 N to 11 N, directed against the holder 28 in its operational position . Since the magnetic force of attraction rises steeply very shortly before the contact of the magnets, but the rise is no longer steep at a slightly increased distance between the magnets, but is comparatively flat, a suitable selection of the magnetic elements (here the permanent magnets 34,36) and by dimensioning the gap 39 (here via the position of the stop shoulder 38 on the shaft 27), the gap can be determined in such a way that on the one hand the above-mentioned forces act and on the other hand the gap is large enough that the magnetic attraction force is still comparatively flat.
- the flat progression allows the tolerances regarding the position of the stop shoulder 38 and the magnets 34, 36 to be kept comparatively large and therefore inexpensive in production.
- the gap width of the gap 39 is preferably between 0.2 mm and 1.2 mm, very preferably 0.6 mm to 0.8 mm and particularly preferably 0.7 mm, with which the above-mentioned forces can be achieved with commercially available permanent magnets. It should be noted here that the conveyor screw 26 is sufficiently secured in the holder 28 during operation by this magnetic fixation, since the conveyed bulk material exerts a reaction force on the conveyor screw 26 in the direction of the holder, but is also sufficient to avoid an undesired displacement , At the same time the exchange of the screw conveyor 26 against another conveyor element comfortably allowed by a slight jerk.
- the stop element here the flange 38
- the stop element is positioned on the shaft 27 in such a way that when the conveyor screw 26 is in the operationally inserted position in the holder 28 between the magnetic elements (in the embodiment shown the permanent magnets 36, 34)
- a gap remains between the shaft 27 and the holder 28 which is preferably between 0.2 mm and 1.2 mm, particularly preferably between 0.6 and 0.8 mm, very particularly preferably 0.7 mm wide.
- the person skilled in the art can easily select the commercially available magnets required for this from the manufacturers' catalogs in a specific case.
- the shank 27 also has a camber 45 which serves to facilitate the insertion of the shank 27 into the opening 32 of the holder 28 .
- the tolerances for the operationally reliable seat of the shaft 27 in the holder 28 are comparatively low, so that the shaft 27 must be positioned precisely radially aligned at the opening 32 when it is inserted, which is not easy in terms of craftsmanship and can take time to succeed, since even a slight canting makes it impossible to insert the shaft 27 into the opening 32 .
- This difficulty is further increased by the magnet 36 which, in the event of a slight deviation in the axial alignment, deflects the shank even further by being attracted to the wall of the opening 32, so that assembly is actually made even more difficult.
- the crowning now allows the shank 27 to be placed obliquely in the opening 32, to be pushed in a little until the shank 27 can easily be correctly aligned during insertion. It is of course necessary for this that the shank 27 has a mounting section 46 with a smaller diameter which adjoins the crowning 45 and extends towards the flange 38, since otherwise the shank 27 could not be inserted into the opening 32 in a tilted position. In other words, the crown protrudes beyond the mounting section 46 in the radial direction.
- the housing 30 is covered by a cover disk 40 which forms a section of the side wall of the delivery container 8 here.
- Figure 3 shows a front view of a shank 27' that is slightly modified compared to shank 27, as seen from the opening 32 of the holder 28 ( Figure 2), which is itself shown in Figure 3 is not evident.
- the magnet 34 used on the end face in the shaft 27' is shown, as well as two
- the crowning 45' on the shaft 27' can only be partially formed in one direction, here in the vertical (direction of the double arrow 50), so that it is essentially only effective in the viewing direction 48. It is then the case that the crowning, here with the partial areas 45' and 45", protrudes beyond the shank 27' at least in a radial direction over the mounting section that is not visible in the figure. Analogously, the mounting section can also only be formed in one direction become.
- a shank 27' modified as shown in FIG. 3 makes sense if, in contrast to the embodiment shown in FIG , so that the shaft is properly supported over its entire rotational position of 360° even without or only with partial crowning.
- the shaft 27' of the screw conveyor 26 preferably has a radially outwardly directed camber 45 on its front side, which then curves against the conveyor helix 26' of the screw conveyor 26 extending mounting section 46 at least in a radial direction 50, preferably in all radial directions, such that the shaft 27 is placed in the opening 32 of the holder 28 slightly tilted in at least one direction and guided into the crowning 45 over a first stretch can be.
- the holder and then accordingly also the shaft can be designed with a stepped diameter over the length of the holder. Then the crowning is to be applied where the shaft has to be inserted in the narrowest point, with the result that the crowning no longer has to be arranged on the front side, but set back from this, towards the stop shoulder.
- the shaft 27, 27' of the screw conveyor 26 preferably has a camber 45', 45" directed radially outwards, which then extends towards the end face of the shaft 27, 27' Shaft section and an adjoining mounting section 46 extending towards the tip of the screw conveyor at least in a radial direction 50, preferably in all radial directions, such that the shaft 27, 27' in a section of the bracket assigned to the crowning has at least one Slightly tilted in direction 50 and can be introduced into this section over a first stretch with the crowning.
- the shaft 27 of the screw conveyor 26 preferably has a radially outwardly directed camber 45 on its end face, which at least in a radial direction 50, preferably in all directions, in such a way that the shaft 27 is placed in an opening 32 or in a step of a holder 28 assigned to the screw conveyor 26, slightly tilted in at least one direction 50 and over a first stretch with the camber 45 in this can be brought in.
- the camber 45 is preferably designed to fit exactly to the section of the opening 32 in which it is located in the operatively inserted position of the screw conveyor 26, such that the screw conveyor 26 is operable at a first location 51 (see Figure 2) on the shaft 27 in the holder 28 is fitted.
- the shaft 27 of the screw conveyor 26 has, within the length in which it protrudes into the opening 32 of the holder 28 during operation, a fitting section 51, the outer dimensions of which are designed to fit exactly over a length to the section of the opening. 32 in which it is in the operatively nested position of the auger 26 such that the auger 26 is operably nested at a second location 53 (opposite a first location such as a crown 45, see Figure 2) on the shank fitted and thus aligned with the desired tolerance in the holder 28 in the axial direction.
- the fitting portion 51 touches the opening 32 over a length, in contrast to the crown (45, 45', 45"), which touches the opening 32 essentially along a line.
- the opening 32 of the holder can then be tubular, with a constant inner diameter over the length in which the shaft of the conveyor screw protrudes cam-free during operation (see FIGS. 4 and 5) into the opening 32.
- FIG. 4 shows the conveyor screw 26 in a view from the front side of the shaft I, with the magnet 36 used there, the crowning 45, the mounting section 46 and the fitting section 52.
- the stop shoulder 38 can also be seen, and in front of it a double locking cam 55, which locks the screw conveyor 26 inserted into the holder so that it cannot rotate.
- FIG. 5 shows a holder 38 in a lateral view from the mouth 60, with its opening 32 being visible and a head 56 in which there is a recess 57 which is formed opposite to the locking cam 55.
- An end face 58 forms a stop surface for the stop shoulder 38 of the conveyor screw 26.
- FIGS. 4 and 5 forms, together with the magnetic plug-in connection in the axial direction, a simple and inexpensive non-rotatable connection of the screw conveyor with its holder. It should be noted that the person skilled in the art can of course design the shape of the cam in a specific case to be different but suitable for the purpose shown.
- the result is preferably a gravimetric dosing unit for bulk materials or a dosing device, in which the shaft of the screw conveyor preferably has at least one cam in the end section facing the screw helix, which during operation has an oppositely designed recess on the end section of the holder facing the screw helix the screw conveyor is fixed in the holder so that it cannot twist. Furthermore, a screw conveyor results in which the shaft of the screw conveyor preferably has at least one cam projecting radially from it in the end section facing the screw helix.
- FIG. 6 shows a 3D view of the cutaway arrangement according to FIG. 2, but with a different conveyor screw 60, the diameter of which section 60' with the conveyor helix 61 is so large that it fills at least the lower part of the conveyor container 8—in contrast to the arrangement from Figure 2 with a small screw conveyor 26, a large screw conveyor 60 is used here in the unchanged holder 28, which thus allows operation with different screw conveyors 26,60.
- the shank 62 of the auger 60 is also designed in the same way as the shank 27 of the auger 26, but with the exception that instead of the stop flange 38 ( Figure 2) due to the larger dimensions of the auger 60 and thus the section 60 'now a Stop shoulder 63 is provided, with which the shaft 62 strikes the holder 28 and determines the gap between the magnets 34,36.
- the conveyor helix 61 rotates counterclockwise as seen from the shaft, but in the embodiment shown its beginning is not at the stop shoulder 63, but at a distance from it and thus has a leading edge 64 that rotates with it in a counterclockwise direction, which is thus at a distance from the cover plate 40 is located. If this distance were smaller than a dimension of the bulk material to be conveyed, such a bulk material can fall in front of the leading edge 64 during operation of the metering device 2 , be caught by it and clamped between it and the cover disk 40 .
- the edge 64 With it the conveyor helix 61 and thus the conveyor screw 60, is pushed away from the cover plate 40 and thus also the holder 28 and can then be easily pushed out of the holder 28 against the magnetic fixation (when stationary the technology with a mechanically locked conveyor screw, such bulk material is simply destroyed).
- the distance between the edge 64 and the cover plate 40, ie the shaft-side wall of the delivery container 8 is greater than the largest dimension of a bulk material, this danger does not exist.
- a distance of 3 mm between the leading edge 64 and the wall of the conveying container (or the cover disk 40) is sufficient for most bulk goods, but depending on the bulk goods the specialist can use a conveyor screw with a greater distance of up to 20 mm.
- the result is a dosing unit 1 or a dosing device 2, in which the conveyor screw protrudes through a conveyor container that is filled with bulk material during operation, and the start of the screw helix has a leading edge 64, the distance from the shaft-side wall of the conveyor container preferably being between 3 mm and 20 mm, particularly preferably between 5 mm and 15 mm and very preferably between 8 and 12 mm.
- a conveyor screw 60 with a stop element 63 for a holder 28 of the conveyor screw 60 and a screw helix 61, the leading edge 64 of the start of the screw helix 61 being at a distance from the stop element 63 of between 3 mm and 20 mm, preferably between 5 mm and 15 mm and most preferably between 8 and 12 mm.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Screw Conveyors (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22826193.9A EP4433393A1 (de) | 2021-11-15 | 2022-11-14 | Gravimetrische dosiereinheit mit einer magnetischen verbindung zwischen der förderschnecke und ihrer halterung |
CN202280088915.5A CN118541320A (zh) | 2021-11-15 | 2022-11-14 | 在输送螺杆与其保持装置之间具有磁性连接的重量测定的计量单元 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CHCH070558/2021 | 2021-11-15 | ||
CH070558/2021A CH719145A1 (de) | 2021-11-15 | 2021-11-15 | Gravimetrische Dosiereinheit mit einer magnetischen Verbindung zwischen der Förderschnecke und ihrer Halterung. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023084481A1 true WO2023084481A1 (de) | 2023-05-19 |
Family
ID=84537173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2022/060935 WO2023084481A1 (de) | 2021-11-15 | 2022-11-14 | Gravimetrische dosiereinheit mit einer magnetischen verbindung zwischen der förderschnecke und ihrer halterung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4433393A1 (de) |
CN (1) | CN118541320A (de) |
CH (1) | CH719145A1 (de) |
WO (1) | WO2023084481A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN207524640U (zh) * | 2017-10-27 | 2018-06-22 | 天津奥展科技有限公司 | 螺旋给料机及气化炉给料系统 |
US20180296037A1 (en) * | 2017-04-13 | 2018-10-18 | Acaia Corporation | Coffee bean conveyance device |
CN111086892A (zh) * | 2019-12-25 | 2020-05-01 | 李晓睿 | 一种用于湿料粉碎过程中的螺旋输送机 |
-
2021
- 2021-11-15 CH CH070558/2021A patent/CH719145A1/de unknown
-
2022
- 2022-11-14 EP EP22826193.9A patent/EP4433393A1/de active Pending
- 2022-11-14 CN CN202280088915.5A patent/CN118541320A/zh active Pending
- 2022-11-14 WO PCT/IB2022/060935 patent/WO2023084481A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180296037A1 (en) * | 2017-04-13 | 2018-10-18 | Acaia Corporation | Coffee bean conveyance device |
CN207524640U (zh) * | 2017-10-27 | 2018-06-22 | 天津奥展科技有限公司 | 螺旋给料机及气化炉给料系统 |
CN111086892A (zh) * | 2019-12-25 | 2020-05-01 | 李晓睿 | 一种用于湿料粉碎过程中的螺旋输送机 |
Also Published As
Publication number | Publication date |
---|---|
EP4433393A1 (de) | 2024-09-25 |
CN118541320A (zh) | 2024-08-23 |
CH719145A1 (de) | 2023-05-31 |
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