EP4351797A1 - Dispositif de dosage de grain a debit controle - Google Patents
Dispositif de dosage de grain a debit controleInfo
- Publication number
- EP4351797A1 EP4351797A1 EP22731695.7A EP22731695A EP4351797A1 EP 4351797 A1 EP4351797 A1 EP 4351797A1 EP 22731695 A EP22731695 A EP 22731695A EP 4351797 A1 EP4351797 A1 EP 4351797A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering device
- wall
- grain
- shaft
- bore
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C11/00—Other auxiliary devices or accessories specially adapted for grain mills
- B02C11/04—Feeding 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
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/11—Details
Definitions
- the invention relates to mills for processing cereal grains and legumes into flour, and in particular mills using grinding wheels to grind cereal grains into flour.
- a known mill of this type includes a rotating wheel and a static or dormant wheel.
- the rotating grinding wheel is driven in rotation by a motor.
- the rotating grinding wheel has a central through hole, fed with grains by a funnel.
- the grains pass through the central orifice and are inserted into a space between the rotating grinding wheel and the static grinding wheel.
- the grains move to the periphery of the millstones and are gradually crushed to separate the bran from the starch and germ, and be transformed into flour.
- the flour is evacuated at the periphery of the static grinding wheel.
- metering devices To improve the consistency of the quality of the flour produced, metering devices have been designed to interpose themselves between the funnel and the central orifice of the rotating millstone and make the flow of grain more constant in the mill.
- metering devices are both bulky and do not allow satisfactory monitoring of the grain supply to the central orifice.
- the document FR2342927 describes a metering system provided with a wheel equipped with rigid blades, extending in an axial direction.
- the rigid blades are rotated around the axial direction by a shaft, rotatably mounted between two bearing surfaces.
- the shaft is rotated by an electric motor.
- the invention aims to solve one or more of these drawbacks.
- the invention thus relates to a grain metering device, as defined in the appended claims.
- Such a grain metering device has a small footprint while making it possible to control the milling process to improve the consistency of the quality of the flour produced.
- the invention also relates to the variants of the dependent claims.
- a person skilled in the art will understand that each of the features of the dependent claims and of the description may be combined independently with the features of an independent claim, without thereby constituting an intermediate generalization.
- FIG.1 is a perspective view of an example of a controlled-rate grain metering device according to one embodiment of the invention.
- FIG.2 is an exploded perspective view of the grain metering device of Figure 1;
- FIG.3 is a top view of the grain metering device of Figure 1;
- FIG.4 is a bottom view of the grain metering device of Figure 1;
- FIG.5 is a front view of the grain metering device of Figure 1;
- FIG.6 is a sectional view from below of the grain metering device of Figure 1 at a transmission shaft;
- FIG.7 is a perspective view of the grain metering device of Figure 1 integrated into a burr mill.
- Figure 1 illustrates a perspective view of a grain metering device 1 according to an exemplary embodiment of the invention.
- Figure 2 is an exploded perspective view of the grain metering device 1 .
- FIGS. 3 and 4 are respectively top and bottom views of the metering device 1 .
- FIG. 5 is a front view of the metering device 1.
- the metering device 1 comprises a metering box 2, a distributor 3 and an electric motor 4.
- the metering box 2 comprises an internal metering volume 20 delimited by a wall 21 of cylindrical shape extending in an axial direction X.
- the internal volume 20 is delimited by a transparent wall 22 at a first axial end and by a wall 23 at a second axial end.
- the metering box 2 comprises a bore 25 opening into the internal volume 20 in a direction Z perpendicular to the axial direction X.
- the bore 25 is intended to form a grain inlet and is positioned upwards.
- the metering box 2 comprises a bore 26 opening into the internal volume 20 in the direction Z, positioned opposite the bore 25.
- the bore 26 is intended to form a grain outlet and is positioned downwards.
- the distributor 3 is rotatably mounted in the internal volume 20.
- the distributor 3 comprises a shaft 31 extending in the axial direction X and mounted cantilevered at the level of the wall 23.
- the cantilever mounting -false of the shaft 31 makes it possible to release the wall 22 and thus to have a transparent wall 22, which makes it possible to monitor the flow of grain in the internal volume 20.
- the distributor 3 also comprises blades 32 extending radially around the shaft 31 .
- the blades 32 delimiting several identical volumes 33 in the internal volume 20.
- the grains enter a volume 33 inside the housing 2 via the bore 25, transit towards the bottom of the housing 2 during the rotation of the shaft 31, to reach the bore 26 and be evacuated from the housing 2 by gravity.
- Volumes 33 being identical, a rotation at constant speed of the shaft 31 makes it possible to ensure a constant flow of grain between the bore 25 and the bore 26.
- the blades 32 have a spacing of less than 1 mm with respect to the wall 21 .
- the cantilever mounting of the shaft 31 therefore makes it possible to view the internal operation in the box 2 without altering the rotation guidance.
- the blades 32 have zero spacing relative to the wall 21, to guarantee permanent rotational guidance of the shaft 31.
- the part of the wicks 34 projecting from the shaft 31 is longer than the distance between the shaft 31 and the wall 21 . The wicks 34 are thus bent by their contact with the wall 21 .
- the electric motor 4 is configured to drive the shaft 31 of the distributor 3 in rotation.
- the electric motor 4 comprises an output shaft 41 embedded in the shaft 31.
- the electric motor 4 is provided with a control circuit 5 to control the speed of rotation of the electric motor 4.
- the speed of rotation can be slaved by the control circuit 5 to a constant speed of rotation, in order to guarantee a constant flow grain.
- the electric motor 4 can be of the stepper type, which makes it possible in particular to do without a reducer and to have a compact motor 4.
- the blades 32 advantageously comprise multiple wicks 34 extending radially from the shaft 31.
- the presence of such wicks 34 promotes for example their bending in case of contact with the wall 21.
- the wicks 34 are advantageously made of synthetic material, for example nylon.
- the wicks 34 have a diameter of between 2 and 6mm. Such a wick diameter makes it possible to have sufficient rigidity to drive the grain and sufficient flexibility to be able to be bent by contact with the wall 21.
- the wicks 34 include agglomerated yarns each having a diameter of between 0.2 and 1mm.
- the wall 21 is advantageously made of metal, in order to limit its wear in the event of contact with the wicks 34, or in order to facilitate the maintenance of the device 1.
- a grain metering device 1 can be used in association with a grain mill 9.
- FIG. 7 is a perspective view of an application example of such a metering device 1.
- the device 1 is positioned under the outlet of a funnel 91.
- the convergent point of the funnel 91 is then connected to the bore 25 of the housing 2.
- the grain of the funnel 91 therefore enters by gravity into the housing 2.
- a pipe 93 is connected to the bore 26 of the housing 2.
- the pipe 93 makes it possible to transfer grain by gravity from the housing 2 to the inside of the mill 9, benefiting from the metering of grain at a controlled rate.
- the mill 9 is here provided with a rotating grinding wheel 94 and a static grinding wheel 95.
- the grain led inside the mill 9 is ground then evacuated by a peripheral nozzle 96.
- the mill 9 further comprises a control module 92 to define its operating parameters, and a rotary drive of the rotary grinding wheel 94 (not shown).
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2106043A FR3123573B1 (fr) | 2021-06-08 | 2021-06-08 | Dispositif de dosage de grain à débit contrôlé |
| PCT/EP2022/065327 WO2022258573A1 (fr) | 2021-06-08 | 2022-06-07 | Dispositif de dosage de grain a debit controle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4351797A1 true EP4351797A1 (fr) | 2024-04-17 |
Family
ID=76920961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22731695.7A Withdrawn EP4351797A1 (fr) | 2021-06-08 | 2022-06-07 | Dispositif de dosage de grain a debit controle |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4351797A1 (fr) |
| FR (1) | FR3123573B1 (fr) |
| WO (1) | WO2022258573A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2342927A1 (fr) * | 1976-03-04 | 1977-09-30 | Toy Rene | Doseur pour produit granuleux |
| DE19960901B4 (de) * | 1999-12-17 | 2010-08-05 | Karl-Heinz Häussler GmbH | Dosiervorrichtung für eine Getreidemühle |
| WO2019159119A1 (fr) * | 2018-02-15 | 2019-08-22 | Flsmidth A/S | Mécanisme et procédé d'alimentation de dispositif de broyage |
| CN111437934A (zh) * | 2020-05-07 | 2020-07-24 | 张旭 | 一种小麦碾压破碎设备 |
-
2021
- 2021-06-08 FR FR2106043A patent/FR3123573B1/fr active Active
-
2022
- 2022-06-07 WO PCT/EP2022/065327 patent/WO2022258573A1/fr not_active Ceased
- 2022-06-07 EP EP22731695.7A patent/EP4351797A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022258573A1 (fr) | 2022-12-15 |
| FR3123573B1 (fr) | 2023-04-28 |
| FR3123573A1 (fr) | 2022-12-09 |
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