WO2024227698A1 - Dispositif de broyage d'un produit pateux ou en poudre et en suspension - Google Patents
Dispositif de broyage d'un produit pateux ou en poudre et en suspension Download PDFInfo
- Publication number
- WO2024227698A1 WO2024227698A1 PCT/EP2024/061496 EP2024061496W WO2024227698A1 WO 2024227698 A1 WO2024227698 A1 WO 2024227698A1 EP 2024061496 W EP2024061496 W EP 2024061496W WO 2024227698 A1 WO2024227698 A1 WO 2024227698A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hollow outer
- inner cylinder
- outer cylinder
- grinding device
- cylinder
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G1/00—Cocoa; Cocoa products, e.g. chocolate; Substitutes therefor
- A23G1/04—Apparatus specially adapted for manufacture or treatment of cocoa or cocoa products
- A23G1/12—Chocolate-refining mills, i.e. roll refiners
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G1/00—Cocoa; Cocoa products, e.g. chocolate; Substitutes therefor
- A23G1/04—Apparatus specially adapted for manufacture or treatment of cocoa or cocoa products
- A23G1/12—Chocolate-refining mills, i.e. roll refiners
- A23G1/125—Conches
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
- A23G1/00—Cocoa; Cocoa products, e.g. chocolate; Substitutes therefor
- A23G1/04—Apparatus specially adapted for manufacture or treatment of cocoa or cocoa products
- A23G1/16—Circular conches, i.e. rollers being displaced on a closed or circular rolling circuit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/16—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs with milling members essentially having different peripheral speeds and in the form of a hollow cylinder or cone and an internal roller or cone
Definitions
- the present application relates to a device for grinding a pasty or powdered and suspended product, such as chocolate for example.
- grinding more broadly covers all pressing techniques between cylinders, such as refining or conching in the case of chocolate.
- a chocolate refining device comprises a series of five horizontal and tangent cylinders W1 to W5 in pairs so as to create four grinding zones Z1 to Z4.
- the chocolate is poured at the grinding zone Z1, between the cylinders W1 and W2, remains stuck on the cylinder W2 until the second grinding zone Z2, passes between the cylinders W2 and W3, remains stuck on the cylinder W3 until the third grinding zone Z3, passes between the cylinders W3 and W4, remains stuck on the cylinder W4 until the fourth grinding zone Z4, passes between the cylinders W4 and W5 and then remains stuck on the cylinder W5 before being detached from the cylinder W5 using a scraper R.
- the chocolate is ground or refined over a short length depending on its direction of travel.
- This type of device is relatively bulky and expensive.
- Document CH40047 describes a device for conching chocolate which comprises a drum rotating on itself along a horizontal axis, an inlet and an outlet for the chocolate provided at the ends of the drum, partitions positioned in the drum and delimiting four compartments distributed between the inlet and the outlet as well as three grinding wheels positioned in three of the compartments. These grinding wheels are free and are not pivotally mounted.
- the drum pivots on itself and the chocolate is introduced into the drum via the inlet and flows successively into the different compartments until the outlet.
- the chocolate is compressed between the wall of the drum and the grinding wheel which pivots freely on itself (due to friction phenomenon) randomly.
- This device does not allow fine control of the grinding parameters. Furthermore, it is relatively long and bulky along the drum pivot axis.
- the present invention aims to remedy all or part of the drawbacks of the prior art.
- the invention relates to a device for grinding a pasty or powdered product and in suspension, characterized in that it comprises a hollow outer cylinder having a first axis, an internal diameter and a first side wall, an inner cylinder having a second axis, an external diameter and a second side surface, a system for supplying the product to be ground positioned between the hollow outer cylinder and the inner cylinder and a system for collecting the ground product.
- the inner cylinder is positioned inside the hollow outer cylinder, the first and second axes are parallel, the first and second side faces face each other, the outer diameter of the inner cylinder is greater than 0.5 times the inner diameter of the hollow outer cylinder, the first and second axes are offset so that the hollow outer cylinder comprises a first generatrix closest to the inner cylinder and the inner cylinder comprises a second generatrix closest to the hollow outer cylinder, the grinding device comprising a grinding zone between the hollow outer cylinder and the inner cylinder at the first and second generatrices, at least one cylinder among the hollow outer cylinder and the inner cylinder is movable between a first position in which the hollow outer cylinder and the inner cylinder are close together and/or in contact with each other and a second position in which the hollow outer cylinder and the inner cylinder are further apart than in the first position, the grinding device comprises at least one return element which exerts a pressure force tending to bring the two cylinders closer together.
- a cylindrical convex surface coincides with a cylindrical concave surface at the grinding zone, which makes it possible to increase the length of the grinding zone according to the direction of travel of the product to be ground.
- Figure 1 is a schematic diagram of a grinding device illustrating one embodiment of the prior art
- FIG. 2 is a schematic representation of a grinding device illustrating one embodiment of the invention
- Figure 3 is a front view of a grinding device illustrating one embodiment of the invention
- Figure 4 is a perspective view from a first viewing angle of the grinding device visible in Figure 3,
- Figure 5 is a perspective view from a second viewing angle of the grinding device visible in Figure 3,
- Figure 6 is a top view of a hollow outer cylinder in which is positioned an inner cylinder of the grinding device visible in Figure 3,
- Figure 7 is a front view of an inner cylinder, feed system and scraper of the grinding device shown in Figure 3, and
- Figure 8 is a sectional view of a feed system of the grinding device seen in Figure 8.
- a grinding device 10 comprises a frame 12, a hollow outer cylinder 14, having a first axis A14 and a first side wall 14.1, supported by the frame 12, an inner cylinder 16, having a second axis A16 and a second side surface 16.1, positioned inside the hollow outer cylinder 14 and supported by the frame 12, a system 18 for feeding the product to be ground positioned between the hollow outer cylinder 14 and the inner cylinder 16 and a system 20 for collecting the ground product.
- the product to be ground is chocolate.
- the invention is not limited to this product.
- the grinding device according to the invention can be used to grind other pasty or powdered products and suspended in a liquid or a mixture of liquids whose viscosity for pasty products is between approximately 0.1 and 10 Pa.s. Even if the grinding device 10 is more particularly suitable for chocolate, its use is not limited to food products. In addition, the grinding device can be used at different stages of the chocolate production process, such as refining or conching for example.
- the first and second axes A14 and A16 are parallel and the first and second side faces 14.1, 16.1 face each other.
- parallel is meant that the first and second axes A14 and A16 are strictly parallel or approximately parallel and form an angle of less than 1°.
- the hollow outer cylinder has an inner diameter D14 corresponding to the diameter of the first side wall 14.1.
- the inner cylinder 16 has an outer diameter D16 corresponding to the diameter of the second side wall 16.1, smaller than the inner diameter D14 of the hollow outer cylinder 14.
- the hollow outer cylinder 14 has a first end 14E1 positioned in a first transverse plane perpendicular to the first axis A14 and a second end 14E2 positioned in a second transverse plane perpendicular to the first axis A14.
- the inner cylinder 16 has a first end 16E1 positioned in a third transverse plane perpendicular to the second axis A16, close to or coincident with the first transverse plane, and a second end 16E2 positioned in a fourth transverse plane perpendicular to the second axis A16, close to or coincident with the second transverse plane.
- the first ends 14E1, 16E1 of the two cylinders 14, 16 are positioned approximately in the same transverse plane and the second ends 14E2, 16E2 of the two cylinders 14, 16 are positioned approximately in the same transverse plane.
- the hollow outer cylinder 14 pivots about the first axis of rotation A14 in a first direction SI.
- the inner cylinder 16 pivots about the second axis of rotation A16 in a second direction S2 identical to the first direction SI.
- the hollow outer cylinder 14 and the inner cylinder 16 rotate in the same direction.
- the hollow outer cylinder 14 and inner cylinder 16 could rotate in opposite directions.
- the first and second axes A14, A16 are offset.
- the hollow outer cylinder 14 comprises a first generator Gl closest to the inner cylinder 16 and the inner cylinder 16 comprises a second generator G2 closest to the hollow outer cylinder 14.
- the grinding device comprises a grinding zone 22 provided between the hollow outer cylinder 14 and the inner cylinder 16, positioned at the level of the first and second generators Gl, G2, extending on either side of said first and second generators Gl, G2.
- the rotation speeds of the two cylinders 14, 16 are coordinated so as to obtain substantially identical linear speeds in the grinding zone 22 for the two cylinders 14, 16.
- the rotation speeds of the two cylinders 14, 16 are coordinated so as to obtain different linear speeds in the grinding zone 22 for the two cylinders 14, 16.
- This mode of operation makes it possible to obtain shearing effects at the level of the grinding zone 22.
- the inner cylinder 16 has a linear speed at the level of the grinding zone 22 greater than that of the outer cylinder 14.
- the outer and inner cylinders 14, 16 each have a controlled rotation speed and are driven in rotation by motors. According to other embodiments, only one of the two cylinders 14, 16 is driven in rotation by a motor, the other cylinder being driven in rotation by friction.
- At least one cylinder among the hollow outer cylinder 14 and the inner cylinder 16 is movable between a first position in which the hollow outer cylinder 14 and the inner cylinder 16 are close together and/or in contact with each other at the first and second generatrices G1, G2 and a second position in which the hollow outer cylinder 14 and the inner cylinder 16 are further apart than in the first position at the first and second generatrices G1, G2 and spaced apart by a few millimeters.
- the maximum gap between the two cylinders is of the order of 20 mm.
- the hollow outer cylinder 16 is movable relative to the inner cylinder 14.
- the inner cylinder 14 or both cylinders could be movable.
- the grinding device 10 comprises at least one return element 24 which exerts a pressure force tending to bring the two cylinders 14, 16 closer together against the product to be ground.
- the return element 24 is a compression spring.
- the invention is not limited to this embodiment for the return element 24.
- the grinding device 10 comprises an adjustment system 25 making it possible to vary the pressure force exerted by the return element 24.
- the grinding device is configured so that the outer and inner cylinders 14, 16 exert a constant pressure force on the material.
- the grinding device is configured so that the outer and inner cylinders 14, 16 exert a pressure force on the material that varies progressively over time.
- the outer diameter D16 of the inner cylinder 16 is greater than 0.5 times the inner diameter D14 of the hollow outer cylinder 14. This configuration makes it possible to increase the length (distance along the circumference of the inner cylinder 16) of the grinding zone 22. Consequently, it is not necessary to provide a succession of five or more cylinders to obtain satisfactory grinding. Two cylinders are sufficient, one being positioned in the other. Thus, the invention makes it possible to obtain a compact and less expensive grinding device.
- the outer diameter D16 of the inner cylinder 16 is less than 0.95 times the inner diameter D14 of the hollow outer cylinder 14.
- the outer diameter D16 of the inner cylinder 16 is between 0.7 and 0.75 times the inner diameter D14 of the hollow outer cylinder 14.
- the first and second axes A14, A16 are vertical, the first ends 14E1, 16E1 being positioned above the second ends 14E2, 16E2 so that the product to be ground flows by gravity between the hollow outer cylinder 14 and the inner cylinder 16 from the first ends 14E1, 16E1 to the second ends 14E2, 16E2.
- the system 18 for supplying the product to be ground is positioned close to the first ends 14E1, 16E1 called upper ends, the collection system 20 being positioned under the hollow outer cylinder 14 and the inner cylinder 16.
- the invention is not limited to this position for the supply system 18, the latter able to be positioned centered relative to the first and second ends.
- the feed system 18 is positioned so as to promote the distribution of the product to be ground between the cylinders 14 and 16.
- the feed system 18 is located upstream of the grinding zone 22 according to the direction of rotation of the two cylinders 14, 16.
- the grinding device 10 comprises at least one scraper 26 positioned downstream of the grinding zone 22 (according to the direction of rotation of the two cylinders 14, 16) so as to detach the ground product from the hollow outer cylinder 14 and/or from the inner cylinder 16.
- the grinding device 10 comprises a recirculation circuit 28 for the ground product to convey the ground product from the collection system 20 to the feed system 18.
- the recirculation circuit 28 comprises at least one recirculation pump 30 configured to raise the ground product from the collection system 20 to the feed system 18.
- the invention is not limited to this configuration.
- a worm screw or any other similar element could be used to raise the ground product from the collection system 20 to the feed system 18.
- the supply system 18, the adjustment system 24, the scraper 26, the recirculation pump 30 and at least part of the recirculation circuit 28 are connected to the chassis 12.
- the collection system 20 is mobile and independent of the chassis 12 or can be detached from the latter.
- the recirculation circuit 28 comprises a connection system 32 to be able to detach the collection system 20.
- the chassis 12 comprises an upper frame 34, an intermediate frame 36, a lower frame 38 as well as uprights 40 connecting the upper, intermediate and lower frames 34, 36, 38.
- the upper frame 34 comprises two side members 34.1 and several cross members 34.2 connecting the two side members 34.1.
- the intermediate frame 36 also includes two side members 36.1 and several cross members 36.2 connecting the two side members 36.1.
- the lower frame 38 comprises first and second side members 38.1, 38.2 and three cross members 38.4, 38.5, 38.6, the first side member 38.1 extending between the two end cross members 38.4, 38.6, the second side member 38.2 connecting a first end cross member 38.4 and the intermediate cross member 38.5.
- the area between the second cross member end 38.6 and the intermediate crosspiece 38.5 form a housing 42 in which the collection system 20 can be positioned.
- the chassis 12 is movable and includes casters 44 under the lower frame 38.
- the chassis 12 may be equipped with handles 46 and a fairing (not shown).
- the invention is not limited to this embodiment for the chassis 12.
- the collection system 20 comprises a tank 48 with a cylindrical upper portion and a lower portion in the shape of a half-sphere.
- the cylindrical upper portion is open and has a diameter greater than the inner diameter D14 of the hollow outer cylinder 14.
- the tank 48 is mobile and mounted on casters 50. It comprises, in the lower part, a tapping 48.1 connected to the recirculation circuit 28.
- This 48 tank can be thermoregulated and include a mixing system.
- the recirculation pump 30 is positioned at the level of the lower frame 38 and connected thereto.
- the inner cylinder 16 has shaft sections 52 that extend on either side of the first and second ends 16E1, 16E2. Depending on the case, the two shaft sections 52 are independent, or come from the same shaft passing through the inner cylinder 16.
- the inner cylinder 16 is supported by two guide bearings 52.1, connected to the frame 12 and positioned on either side of the inner cylinder 16, cooperating with the two shaft sections 52. These two guide bearings 52.1 make it possible to obtain a pivot connection between the frame 12 and the inner cylinder 16.
- the inner cylinder 16 is positioned between two guide bearings 52.1 secured to the frame 12, said guide bearings 52.1 being configured to ensure maintenance and rotational guidance of the inner cylinder 16.
- the grinding device comprises a first motor 54, supported by the chassis 12 and more particularly by the upper frame 34, configured to drive the inner cylinder 16 in rotation.
- the first motor 54 is coupled to an angle gear itself coupled to the upper shaft section 52.
- the invention is not limited to this embodiment for driving the inner cylinder 16 in rotation. The latter could be driven in rotation by friction by the hollow outer cylinder 14.
- the hollow outer cylinder 14 comprises a tubular shape as well as a collar 56 positioned at mid-height.
- the grinding device comprises a second motor 58, supported by the chassis 12 and more particularly by the intermediate frame 36, configured to rotate the hollow outer cylinder 16.
- the second motor 58 is coupled to a bevel gear itself coupled to a pinion 60 which has a vertical axis.
- the hollow outer cylinder 14 has a toothed crown 62, integral with the collar 56, which cooperates with the pinion 60.
- the invention is not limited to this embodiment for rotating the hollow outer cylinder 14. The latter could be rotated by friction by the inner cylinder 16.
- the grinding device 10 comprises a support plate 64, on which the hollow outer cylinder 14 is pivotally mounted, as well as a guide 66 connecting the support plate 64 to the chassis 12 and more particularly to the intermediate frame 36.
- This guide 66 is configured to allow the support plate 64 to move in a horizontal plane, perpendicular to the first and second axes A14, A16, in a direction parallel to a straight line perpendicular to the first and second axes A14, A16 and passing through the first and second axes A14, A16.
- the movement of the support plate 64 allows the two cylinders 14, 16 to move apart or come closer together.
- the guide 66 comprises two slides secured to the side members 36.1 of the intermediate frame 36.
- an orientation ring 56.1 connects the collar 56 and the support plate 64.
- the second motorization 58 can be connected to this support plate 64.
- the grinding device comprises an orientation ring 56.1 configured to guide the hollow outer cylinder 14 in rotation relative to the chassis 12 or relative to a support plate 64 guided in translation relative to the chassis 12.
- the adjustment system 25 comprises a spring 68.1 arranged so as to push the support plate 64 in a direction which tends to bring the first and second axes A14, A16 closer together as well as a crank 68.2 which tends to compress the spring 68.1 more or less in order to adjust the pressure force exerted by the two cylinders 14 and 16 on the product to be ground.
- the invention is not limited to this embodiment for the guide 66, the return element 24 and the adjustment system 25.
- the grinding device comprises a support 70, which extends from one end to the other of the cylinders 14, 16 connected to the frame 12, on which are fixed two scrapers 26, 26', a first scraper 26 in contact with the hollow outer cylinder 14 as well as a second scraper 26' in contact with the inner cylinder 16.
- the two scrapers 26, 26' form a V in contact with the two cylinders 14, 16, the tip of the V being further away from the grinding zone 22 than the contact zones between the scrapers 26, 26' and the cylinders 14, 16.
- the recirculation circuit 28 comprises different tubes and valves for channeling the product to be ground from the collection system 20 to the supply system 18.
- the feed system 18 comprises a feed tube 72 closed at its upper end and opening at its lower end as well as a feed duct 74 opening into the feed tube 72 and connected to the recirculation circuit 28.
- the feed tube 72 has an axis A72 oriented in a first direction, approximately vertical.
- the feed system 18 comprises a rotating disk 76 configured to pivot about a pivot axis forming an angle of less than 20° with the first and second axes A14, A16 on which the product to be ground falls.
- the pivot axis of the rotating disk is parallel to the first and second axes A14, A16.
- the invention is not limited to these angles for the pivot axis.
- the rotating disk 76 pivots about an axis coaxial with the axis A72 of the feed tube 72. It is positioned under the feed tube 72 and has a diameter greater than the inner diameter of the feed tube 72.
- This rotating disk 76 is fixed to one end of a shaft 78 passing through the feed tube 72 and coupled to a third motorization 80.
- the product to be ground flows by gravity at the lower end of the feed tube 72 and falls onto the rotating disk 76 which projects it radially onto the side walls 14.1, 16.1 of the hollow outer cylinder 14 and the inner cylinder 16. By gravity, the product to be ground flows along said side walls 14.1 and 16.1.
- the rotating disk 78 is positioned in a plane located in the upper third of the cylinders 14, 16.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Crushing And Grinding (AREA)
- Confectionery (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2304379A FR3148383A1 (fr) | 2023-05-02 | 2023-05-02 | Dispositif de broyage d’un produit pâteux ou en poudre et en suspension |
| FRFR2304379 | 2023-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024227698A1 true WO2024227698A1 (fr) | 2024-11-07 |
Family
ID=87554631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/061496 Pending WO2024227698A1 (fr) | 2023-05-02 | 2024-04-26 | Dispositif de broyage d'un produit pateux ou en poudre et en suspension |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR3148383A1 (fr) |
| WO (1) | WO2024227698A1 (fr) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB362327A (en) * | 1931-05-28 | 1931-12-03 | Toussaint Ketin | Improvements in grinding apparatus |
| US2282887A (en) * | 1942-05-12 | Wood grinding machine | ||
| BE500861A (fr) * | 1950-04-26 | 1951-02-15 | Macchine Ind Dolciaria Carle & | |
| DE1035458B (de) * | 1956-03-13 | 1958-07-31 | F B Lehmann G M B H Maschinenf | Versalbungsmaschine fuer warmfluessige Massen, insbesondere als Conche fuer Schokoladenmassen |
| CH400747A (de) * | 1963-03-06 | 1965-10-15 | Buss Ag | Einrichtung zum Reiben und/oder Rühren von flüssigen bis zähflüssigen Massen bei gleichzeitigem Be- oder Entgasen |
| EP0486371A2 (fr) * | 1990-11-12 | 1992-05-20 | F C B | Broyeur pour la broyage fin de matériaux |
| WO2020047160A1 (fr) * | 2018-08-28 | 2020-03-05 | Nordell Lawrence K | Broyeur à cylindre unique |
-
2023
- 2023-05-02 FR FR2304379A patent/FR3148383A1/fr active Pending
-
2024
- 2024-04-26 WO PCT/EP2024/061496 patent/WO2024227698A1/fr active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2282887A (en) * | 1942-05-12 | Wood grinding machine | ||
| GB362327A (en) * | 1931-05-28 | 1931-12-03 | Toussaint Ketin | Improvements in grinding apparatus |
| BE500861A (fr) * | 1950-04-26 | 1951-02-15 | Macchine Ind Dolciaria Carle & | |
| DE1035458B (de) * | 1956-03-13 | 1958-07-31 | F B Lehmann G M B H Maschinenf | Versalbungsmaschine fuer warmfluessige Massen, insbesondere als Conche fuer Schokoladenmassen |
| CH400747A (de) * | 1963-03-06 | 1965-10-15 | Buss Ag | Einrichtung zum Reiben und/oder Rühren von flüssigen bis zähflüssigen Massen bei gleichzeitigem Be- oder Entgasen |
| EP0486371A2 (fr) * | 1990-11-12 | 1992-05-20 | F C B | Broyeur pour la broyage fin de matériaux |
| WO2020047160A1 (fr) * | 2018-08-28 | 2020-03-05 | Nordell Lawrence K | Broyeur à cylindre unique |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3148383A1 (fr) | 2024-11-08 |
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