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EP3328529B1 - Dispositif et procédé de mélange de sable - Google Patents

Dispositif et procédé de mélange de sable Download PDF

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Publication number
EP3328529B1
EP3328529B1 EP15767268.4A EP15767268A EP3328529B1 EP 3328529 B1 EP3328529 B1 EP 3328529B1 EP 15767268 A EP15767268 A EP 15767268A EP 3328529 B1 EP3328529 B1 EP 3328529B1
Authority
EP
European Patent Office
Prior art keywords
mixing
peripheral
central
sand
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15767268.4A
Other languages
German (de)
English (en)
Other versions
EP3328529A1 (fr
Inventor
Claus Ejvind HANSEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Disa Industries AS
Original Assignee
Disa Industries AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Disa Industries AS filed Critical Disa Industries AS
Priority to PL15767268T priority Critical patent/PL3328529T3/pl
Publication of EP3328529A1 publication Critical patent/EP3328529A1/fr
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Publication of EP3328529B1 publication Critical patent/EP3328529B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
    • B22C5/044—Devices having a vertical stirrer shaft in a fixed receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/23—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis
    • B01F27/232—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes
    • B01F27/2321—Mixers with rotary stirring devices in fixed receptacles; Kneaders characterised by the orientation or disposition of the rotor axis with two or more rotation axes having different inclinations, e.g. non parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/61—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis about an inclined axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/82—Pan-type mixers, i.e. mixers in which the stirring elements move along the bottom of a pan-shaped receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/752—Discharge mechanisms with arrangements for converting the mechanism from mixing to discharging, e.g. by either guiding a mixture back into a receptacle or discharging it

Definitions

  • the present invention relates to a sand mixing device having a mixing bowl which is arranged stationarily on a support frame and includes a peripheral side wall and a bottom wall, a central mixing tool being arranged rotatably about a central mixer axis of the mixing bowl and having a number of blades extending along the bottom wall to the peripheral side wall, and at least one peripheral mixing tool being arranged rotatably about a peripheral mixer axis.
  • a sand mixing device of the above-mentioned type is available under the trade name DISA TM Mixer.
  • DE 39 01 774 discloses a weighing mixer particularly suitable for bulk material, such as synthetic granulate.
  • the mixer has a cylindrical vessel with a steeply inclined lower base part which facilitates easy emptying of the vessel through an outlet inserted without dead space.
  • a mixing tool is arranged rotatably about an axis displaced in relation to the cylinder axis of the cylindrical vessel. This kind of mixer is less suitable for sand mixing in a foundry.
  • FR 1.271.334 discloses another mixer having a steeply inclined mixing vessel and a helical mixing tool arranged non-centrally and close to a cylindrical wall of the mixing vessel.
  • EP 0 125 389 discloses an apparatus for treating materials which are capable of flow, comprising a mixing container which rotates about its central axis which is inclined with respect to the vertical, with a wall and/or bottom scraper plate which is arranged substantially stationarily with respect to the cylindrical inside wall of the mixing container, a discharge opening disposed in the bottom of the mixing container and one or two non-centrally arranged rotating tools which engage into the material.
  • the mixing container is driven at a sub-critical speed of rotation, the rotating tool is arranged exclusively at the downstream side of the apex, that the space on the upstream side is free of fittings therein and that the scraper plate is disposed in the vicinity of the apex of the mixing container.
  • an outer stationary shield is necessary which may complicate the filling and emptying operations and sample takings.
  • Document DE-B1-23 18 692 discloses a mixing device in accordance with the preamble of claim 1 and a method in accordance with the preamble of claim 18.
  • the object of the present invention is to provide a sand mixing device of the type mentioned by way of introduction, whereby process cycle time and energy consumption may be reduced.
  • the mixing bowl in accordance with claim 1, is arranged in an inclined position on the support frame so that the central mixer axis of the mixing bowl is inclined at an angle to the vertical, a first cross-sectional plane extending through the mixing bowl and including both the central mixer axis and a horizontal line extending in a plane defining the bottom wall divides the mixing bowl into a lower part positioned relatively lower and a higher part positioned relatively higher, and at least one peripheral mixing tool is arranged in the lower part of the mixing bowl.
  • the combination of the inclined mixing bowl and the positioning of at least one peripheral mixing tool in the lower part of the mixing bowl has proven to provide both more efficient mixing and lower energy consumption so that mixing time and energy consumption may be reduced at the same time.
  • a further beneficial effect of the inclined mixing bowl is that emptying of the mixing vessel may be performed faster. The total effect is therefore that a substantially reduced process cycle time and a substantially reduced energy consumption may be achieved.
  • test results have revealed that the inclined mixing bowl in itself, although providing reduced energy consumption, does not provide an improved mixing result without also positioning at least one peripheral mixing tool in the lower part of the mixing bowl.
  • test results have revealed that the reduced energy consumption obtained by the inclined mixing bowl may be boosted by positioning at least one peripheral mixing tool in the lower part of the mixing bowl. Therefore, it may be concluded that according to the present invention, a surprising synergistic effect may be achieved.
  • the central mixer axis of the mixing bowl is inclined at an angle of between 5 and 30 degrees, preferably of between 7 and 25 degrees, more preferred of between 8 and 20 degrees, and most preferred of between 9 and 15 degrees to the vertical.
  • the blades of the central mixing tool are distributed evenly about the central mixer axis of the mixing bowl, neighbouring blades thereby forming a certain mutual angle, and the at least one peripheral mixing tool is arranged so that the mutual angle between any pair of peripheral mixing tools is different from an integer multiple of the certain mutual angle of the neighbouring blades of the central mixing tool.
  • the at least one peripheral mixing tool is arranged so that the mutual angle between any pair of peripheral mixing tools differs more than 3 per cent, preferably more than 5 per cent, and most preferred more than 7 per cent, from an integer multiple of the certain mutual angle of the neighbouring blades of the central mixing tool.
  • the sand mixing device includes a first peripheral mixing tool being arranged rotatably about a first peripheral mixer axis at a first angular mixer position about the central mixer axis of the mixing bowl and a second peripheral mixing tool being arranged rotatably about a second peripheral mixer axis at a second angular mixer position about the central mixer axis of the mixing bowl, and the first and the second peripheral mixing tools are arranged in the lower part of the mixing bowl.
  • This embodiment may be more efficient for relatively larger mixers.
  • the central mixing tool includes four blades distributed evenly about the central mixer axis of the mixing bowl, neighbouring blades thereby forming a mutual angle of 90 degrees, and the first and the second peripheral mixing tools are arranged so that the first and second angular mixer positions differ by between 73 and 87 degrees, preferably by between 78 and 85 degrees, and most preferred by between 82 and 84 degrees.
  • the above-mentioned undesirable counter-phase effect may be reduced or avoided efficiently, and therefore, the energy consumption may be reduced efficiently.
  • an even number of blades on the central mixing tool may be advantageous in that transverse forces in the central mixing tool may be avoided so that only moment is present.
  • the central mixing tool is adapted to rotate sand in the mixing bowl in a main rotational direction, thereby defining an upstream and a downstream direction in the mixing bowl
  • the first peripheral mixing tool is located upstream in relation to the second peripheral mixing tool
  • the first angular mixer position differs from an angular position of the first cross-sectional plane by between 10 and 55 degrees, preferably by between 20 and 45 degrees, and most preferred by between 30 and 35 degrees.
  • the first peripheral mixing tool is arranged higher than the second peripheral mixing tool in relation to the bottom wall of the mixing bowl.
  • the central mixing tool is adapted to rotate in a main rotational direction
  • the at least one peripheral mixing tool is adapted to rotate in a rotational direction opposite to the main rotational direction
  • the central mixing tool is adapted to rotate in a main rotational direction
  • each blade of the central mixing tool extends from a central hub to a free end at the peripheral side wall of the mixing bowl, each blade curves from the central hub in a rotational direction opposite to the main rotational direction, and the free end of each blade is provided with a blade tip having an upper face slanting towards the bottom wall of the mixing bowl in the main rotational direction.
  • the respective peripheral mixer axes seen in respective radial cross-sectional views of the mixing bowl, form respective angles with the central mixer axis of at least 2 degrees, preferably at least 3 degrees, and most preferred at least 4 degrees, so that the lower ends of the peripheral mixing tools, respectively, are at least slightly pointed towards the central mixer axis.
  • the peripheral side wall is rotationally symmetric, such as composed by conical and/or cylindrical sections, about its central mixer axis, and wherein the central mixer axis is perpendicular to the bottom wall.
  • the peripheral side wall is a cylindrical wall
  • the bottom wall is arranged at right angles to the cylindrical wall
  • the central mixer axis of the peripheral side wall is a cylinder axis of the cylindrical wall.
  • a second cross-sectional plane through the mixing bowl including the central mixer axis and extending at right angles to the first cross-sectional plane defines a lowest point angular position in the lower part of the mixing bowl and a highest point angular position in the higher part of the mixing bowl, and an outlet port is arranged in the peripheral side wall, next to the bottom wall, at the lowest point angular position.
  • the sand mixing device is controlled to empty the mixing bowl by opening the outlet port, rotating the central mixing tool and at least substantially reducing the rotational speed of or stopping the first and second peripheral mixing tools.
  • the central mixing tool is provided with a central conical top part covering the upper end of a central mixing shaft on which the central mixing tool is mounted.
  • the efficiency of the sand mixing device may be improved in that circulation of sand in the mixing bowl may be facilitated so that sand moved downward at the central part of the mixing bowl may slide down on the central conical top part and thereby be guided outwards to the blades of the central mixing tool at the bottom wall of the mixing bowl.
  • the mixing bowl is provided with a horizontal top cover in which a sand feed hopper is arranged.
  • the sand feed hopper may be arranged in different angular orientations about a vertical axis according to requirements, without inclining the sand feed hopper in relation to the horizontal plane.
  • a mounting opening in the horizontal top cover is adapted to the sand feed hopper so that the sand feed hopper may be arranged in at least four different angular orientations about a vertical axis.
  • the sand feed hopper may in an easy way be arranged in different angular orientations about a vertical axis according to requirements.
  • each peripheral mixing tool is driven by a respective direct drive motor arranged on the horizontal top cover by means of a respective intermediate flange piece arranged on the horizontal top cover and having a respective motor connection flange adapted to the respective angle of the peripheral mixer axis.
  • the mixing bowl is provided with an oblique top cover arranged below the horizontal top cover, each peripheral mixing tool is driven by a respective direct drive motor arranged on the oblique top cover by means of a respective intermediate flange piece arranged on the oblique top cover and having a respective motor connection flange adapted to the respective angle of the respective peripheral mixer axis.
  • the present invention further relates to a method of mixing sand, in accordance with claim 18, in a mixing bowl which is maintained stationarily on a support frame and includes a peripheral side wall and a bottom wall, whereby a central mixing tool is rotated about a central mixer axis of the mixing bowl and has a number of blades extending to the peripheral side wall and swiping over the bottom wall, and whereby at least one peripheral mixing tool is rotated about a peripheral mixer axis.
  • the method is characterised by that the mixing bowl is maintained in an inclined position on the support frame so that the central mixer axis of the mixing bowl is inclined at an angle to the vertical, by that a first cross-sectional plane extending through the mixing bowl and including both the central mixer axis and a horizontal line extending in a plane defining the bottom wall divides the mixing bowl into a lower part positioned relatively lower and a higher part positioned relatively higher, and by that at least one peripheral mixing tool is rotated in the lower part of the mixing bowl.
  • the central mixer axis of the mixing bowl is inclined at an angle of between 5 and 30 degrees, preferably of between 7 and 25 degrees, more preferred of between 8 and 20 degrees, and most preferred of between 9 and 15 degrees to the vertical.
  • two blades of the central mixing tool do not simultaneously pass two respective peripheral mixer axes of a pair of peripheral mixing tools.
  • the angular position about the central mixer axis of any other blade of the central mixing tool is not nearer than 3 degrees, preferably not nearer than 4 degrees, more preferred not nearer than 5 degrees and most preferred not nearer than 6 degrees, to a peripheral mixer axis of another peripheral mixing tool.
  • a first peripheral mixing tool is rotated about a first peripheral mixer axis at a first angular mixer position about the central mixer axis of the mixing bowl and a second peripheral mixing tool is rotated about a second peripheral mixer axis at a second angular mixer position about the central mixer axis of the mixing bowl, and the first and the second peripheral mixing tools are rotated in the lower part of the mixing bowl.
  • the central mixing tool rotates sand in the mixing bowl in a main rotational direction, thereby defining an upstream and a downstream direction in the mixing bowl, the first peripheral mixing tool meets sand upstream in relation to the second peripheral mixing tool, and the first angular mixer position differs from an angular position of the first cross-sectional plane by between 10 and 55 degrees, preferably by between 20 and 45 degrees, and most preferred by between 30 and 35 degrees.
  • the first peripheral mixing tool is arranged higher than the second peripheral mixing tool in relation to the bottom wall of the mixing bowl.
  • the central mixing tool rotates in a main rotational direction
  • the at least one peripheral mixing tool rotate in a rotational direction opposite to the main rotational direction.
  • the central mixing tool rotates in a main rotational direction
  • each blade of the central mixing tool extends from a central hub to a free end at the peripheral side wall of the mixing bowl, each blade curves from the central hub in a rotational direction opposite to the main rotational direction, and the free end of each blade is provided with a blade tip lifting sand in upward direction in relation to the bottom wall of the mixing bowl.
  • the respective peripheral mixer axes seen in respective radial cross-sectional views of the mixing bowl, form respective angles with the central mixer axis of at least 2 degrees, preferably at least 3 degrees, and most preferred at least 4 degrees, so that the lower ends of the peripheral mixing tools, respectively, are at least slightly pointed towards the central mixer axis.
  • the peripheral side wall is rotationally symmetric, such as composed by conical and/or cylindrical sections, about its central mixer axis, and wherein the central mixer axis is perpendicular to the bottom wall.
  • the peripheral side wall is a cylindrical wall
  • the bottom wall is arranged at right angles to the cylindrical wall
  • the central mixer axis of the peripheral side wall is a cylinder axis of the cylindrical wall.
  • a second cross-sectional plane through the mixing bowl including the central mixer axis and extending at right angles to the first cross-sectional plane defines a lowest point angular position in the lower part of the mixing bowl and a highest point angular position in the higher part of the mixing bowl, and, subsequent to sand mixing, the mixing bowl is emptied of sand through an outlet port arranged in the peripheral side wall, next to the bottom wall, at the lowest point angular position.
  • the mixing bowl is emptied by opening the outlet port, rotating the central mixing tool and at least substantially reducing the rotational speed of or stopping the first and second peripheral mixing tools.
  • the central mixing tool is provided with a central conical top part covering the upper end of a central mixing shaft on which the central mixing tool is mounted, and sand moves downward at the central part of the mixing bowl and slides down on the central conical top part and thereby is guided outwards to the blades of the central mixing tool at the bottom wall of the mixing bowl.
  • the mixing bowl is provided with a horizontal top cover in which a sand feed hopper is arranged.
  • a mounting opening in the horizontal top cover is adapted to the sand feed hopper so that the sand feed hopper may be arranged in at least four different angular orientations about a vertical axis.
  • each peripheral mixing tool is driven by a respective direct drive motors arranged on the horizontal top cover by means of a respective intermediate flange piece arranged on the horizontal top cover and having a respective motor connection flange adapted to the respective angle of the peripheral mixer axis.
  • the mixing bowl is provided with an oblique top cover arranged below the horizontal top cover, each peripheral mixing tool is driven by a respective direct drive motor arranged on the oblique top cover by means of a respective intermediate flange piece arranged on the oblique top cover and having a respective motor connection flange adapted to the respective angle of the respective peripheral mixer axis.
  • Fig. 2 illustrates a sand mixing device 1 having a mixing bowl 2 which is arranged stationarily on a support frame 3 and includes a peripheral side wall 4 and a bottom wall 5.
  • a central mixing tool 6 is arranged rotatably about a central mixer axis 7 of the mixing bowl 2 and has four blades 8 extending along the bottom wall 5 to the peripheral side wall 4.
  • a first peripheral mixing tool 9 is arranged rotatably about a first peripheral mixer axis 10 at a first angular mixer position P 1 about the central mixer axis 7 of the mixing bowl 2.
  • the first angular mixer position is located in the cross-section illustrated in Fig. 3 .
  • a second peripheral mixing tool 11 is arranged rotatably about a second peripheral mixer axis 12 at a second angular mixer position P 2 about the central mixer axis 7 of the mixing bowl 2.
  • the second angular mixer position is located in the cross-section illustrated in Fig. 2 .
  • the mixing bowl 2 is arranged in an inclined position on the support frame 3 so that the central mixer axis 7 of the mixing bowl is inclined at an angle M to the vertical.
  • the angle M is approximately 8 degrees.
  • the angle M may according to the invention be between 5 and 30 degrees, preferably between 7 and 25 degrees, more preferred between 8 and 20 degrees, and most preferred between 9 and 15 degrees.
  • the support frame 3 is provided with not shown feet or the like adapted to position the support frame 3 on a horizontally extending floor so that the mixing bowl 2 is inclined at said angle M to the vertical.
  • Fig. 1 is a top view of the sand mixing device 1 according to the present invention, seen obliquely from above in the direction of the central mixer axis 7.
  • Fig. 1 illustrates a first cross-sectional plane 13 extending through the mixing bowl 2 and including both the central mixer axis 7 and a not shown horizontal line extending in a plane defining the bottom wall 5.
  • the first cross-sectional plane 13 divides the mixing bowl 2 into a lower part 14 positioned relatively lower and a higher part 15 positioned relatively higher.
  • the first and the second peripheral mixing tools 9, 11 are arranged in the lower part 14 of the mixing bowl 2.
  • at least one peripheral mixing tool is arranged in the mixing bowl 2, and at least one of these peripheral mixing tools is arranged in the lower part 14 of the mixing bowl 2.
  • the central mixing tool 6 includes four blades 8 distributed evenly about the central mixer axis 7 of the mixing bowl 2. Neighbouring blades 8 thereby form a mutual angle of 90 degrees.
  • the first and second peripheral mixing tools 9, 11 are arranged so that the first and second angular mixer positions differ by an angle P 12 of approximately 83 degrees.
  • the first and the second peripheral mixing tools 9, 11 may be arranged so that the first and second angular mixer positions differ by an angle P 12 of between 73 and 87 degrees, preferably by between 78 and 85 degrees, and most preferred by between 82 and 84 degrees.
  • the central mixing tool 6 may include other numbers of blades 8 distributed evenly about the central mixer axis 7 so that neighbouring blades form a certain mutual angle.
  • the first and the second peripheral mixing tools 9, 11 are arranged so that the first and second angular mixer positions P 1 , P 2 differ by an angle P 12 that is different from an integer multiple of the certain mutual angle of the neighbouring blades 8 of the central mixing tool 6.
  • a greater number of peripheral mixing tools is arranged, such as three, four or even more peripheral mixing tools, these are arranged so that the mutual angle between any pair of peripheral mixing tools is different from an integer multiple of the certain mutual angle of the neighbouring blades of the central mixing tool.
  • the peripheral mixing tools are arranged so that the mutual angle between any pair of peripheral mixing tools differs more than 3 per cent, preferably more than 5 per cent, and most preferred more than 7 per cent, from an integer multiple of the certain mutual angle of the neighbouring blades of the central mixing tool.
  • the above-mentioned undesirable counter-phase effect may be substantially reduced or avoided.
  • the central mixing tool 6 is adapted to rotate sand in the mixing bowl 2 in a main rotational direction R, thereby defining an upstream and a downstream direction in the mixing bowl 2.
  • the first peripheral mixing tool 9 is located upstream in relation to the second peripheral mixing tool 12.
  • the first angular mixer position P 1 is between 10 and 55 degrees, preferably between 20 and 45 degrees, and most preferred between 30 and 35 degrees.
  • the first angular mixer position P 1 is 32 degrees
  • the second angular mixer position P 2 is 115 degrees.
  • the first peripheral mixing tool 9 is arranged higher than the second peripheral mixing tool 11 in relation to the bottom wall 5 of the mixing bowl 2.
  • the central mixing tool 6 is adapted to rotate in the main rotational direction R
  • the first and second peripheral mixing tools 9, 11 are adapted to rotate in a rotational direction r opposite to the main rotational direction R.
  • the main rotational direction R is counter clockwise.
  • the central mixing tool 6 is adapted to rotate in the main rotational direction R, and as illustrated in Fig. 10 , each blade 8 of the central mixing tool 6 extends from a central hub 16 to a free end 17 at the peripheral side wall 4 of the mixing bowl 2 so that each blade 8 curves from the central hub 16 in a rotational direction opposite to the main rotational direction R. Thereby, two opposed blades 8 together makes an S-formed configuration.
  • the free end 17 of each blade 8 is provided with a blade tip 18 having an upper face 49 slanting towards the bottom wall 5 of the mixing bowl 2 in the main rotational direction R. During mixing of sand, the blade tips may lift sand in upward direction in relation to the bottom wall 5 of the mixing bowl 2.
  • the respective angles m equal 5 degrees; however, generally, according to the present invention, the angles may be at least 2 degrees, preferably at least 3 degrees, and most preferred at least 4 degrees.
  • the peripheral side wall 4 of the mixing bowl 2 is a cylindrical wall
  • the bottom wall is arranged at right angles to the cylindrical wall
  • the central mixer axis 7 of the peripheral side wall 4 and of the mixing bowl 2 is a cylinder axis of the cylindrical wall.
  • the peripheral side wall 4 is rotationally symmetric, such as composed by conical and/or cylindrical sections, about its central mixer axis 7.
  • the central mixer axis 7 is preferably perpendicular to the bottom wall 5.
  • Fig. 1 further illustrates a second cross-sectional plane 19 extending through the mixing bowl 2, including the central mixer axis 7 and extending at right angles to the first cross-sectional plane 13.
  • the second cross-sectional plane 19 defines a lowest point angular position L P of the bottom wall 5 in the lower part 14 of the mixing bowl 2 and a highest point angular position H P of the bottom wall 5 in the higher part 15 of the mixing bowl 2.
  • An outlet port 20 is arranged in the peripheral side wall 4, next to the bottom wall 5, at the lowest point angular position L P .
  • the sand mixing device 1 is controlled to, subsequent to sand mixing, empty the mixing bowl 2 by opening the outlet port 20, rotating the central mixing tool 6 and at least substantially reducing the rotational speed of or stopping the first and second peripheral mixing tools 9, 11. Rotation of the central mixing tool 6 may facilitate the emptying operation, whereas rotation of the first and/or the second peripheral mixing tool 9, 11 in some circumstances may slow down the emptying operation.
  • the central mixing tool 6 is provided with a central conical top part 22 covering the upper end of a central mixing shaft 23 on which the central mixing tool 6 is mounted.
  • a central conical top part 22 covering the upper end of a central mixing shaft 23 on which the central mixing tool 6 is mounted.
  • sand moves downward at the central part of the mixing bowl 2 and slides down on the central conical top part 22 and is thereby guided outwards to the blades 8 of the central mixing tool 6 at the bottom wall 5 of the mixing bowl 2.
  • the central mixing tool 6 is driven by means of a drive motor 46 via an angular gearbox 47.
  • the mixing bowl 2 is provided with a horizontal top cover 24 in which a sand feed hopper 25 also denoted a batch hopper is arranged. It is noted that in Figs. 6 and 8 , the central mixing tool 6 has not been mounted.
  • a mounting opening 26 is adapted to fit a substantially rectangular bottom part of the sand feed hopper 25 so that the sand feed hopper 25 may be arranged in at least four different angular orientations about a vertical axis.
  • the orientation of the sand feed hopper 25 may conveniently be adapted to the position of a sand conveyor adapted to fill sand into the sand feed hopper 25. In the configuration illustrated in Figs.
  • the sand feed hopper 25 has been rotated 90 degrees about said vertical axis in relation to the configuration illustrated in Figs. 6 and 7 .
  • the mounting opening 26 may have different forms in order to fit the sand feed hopper 25 so that the sand feed hopper 25 may be rotated to be mounted in different positions.
  • the mounting opening 26 is at least substantially square-formed.
  • the bottom part of the sand feed hopper 25 is circular, and the corresponding mounting opening 26 is circular.
  • the sand feed hopper 25 is in a well-known way provided with three not shown weighing cells. When the required weight of sand has been achieved in the sand feed hopper 25, this is detected by the weighing cells, and a bottom door of the sand feed hopper 25 is opened by means of a pneumatic cylinder so that the sand is fed into the sand mixing device 1.
  • the sand mixing device 1 is furthermore provided with a not shown water supply including a water tank large enough to contain the amount required for at least one batch operation of the sand mixing device, for instance 100 litres.
  • the water tank is also provided with a number of weighing cells so that the weight of water present in the water tank may be weighed continuously as the water is supplied from the tank to the mixing bowl 2.
  • a relatively large amount of water such as 90 kilogrammes, estimated to be almost enough for the required humidity of the sand, is filled into the mixing bowl via a relatively large control valve.
  • This is preferably done simultaneously with the sand filling operation.
  • This relatively large amount of water may for instance be supplied to the mixing bowl within 15 seconds.
  • the relatively large control valve may provide fast water filling.
  • the sand humidity in the mixing bowl 2 is measured and a required additional sand weight is calculated.
  • a relatively small amount of water such as 4 kilogrammes, estimated to be enough for the required humidity of the sand, is filled into the mixing bowl via a relatively small control valve.
  • the relatively small control valve may provide precision.
  • each peripheral mixing tool 9, 11 is driven by a respective direct drive motor 27, 28 arranged on the horizontal top cover 24 by means of a respective intermediate flange piece 29, 30 arranged on the horizontal top cover 24 and having a respective motor connection flange 31, 32 adapted to the respective angle of the respective peripheral mixer axis 10, 12.
  • the direct drive motors 27, 28 are relatively compact compared to prior art belt drives, this arrangement facilitates the above-mentioned design of the sand feed hopper 25 whereby the sand feed hopper 25 may be arranged in different angular orientations about a vertical axis.
  • the direct drive motors provide for easier maintenance than belt drives.
  • the mixing bowl 2 is provided with an oblique top cover 33 arranged below the horizontal top cover 24.
  • Each peripheral mixing tool 9, 11 is driven by a respective direct drive motor 27, 28 arranged on the oblique top cover 33 by means of a respective intermediate flange piece 34, 35 arranged on the oblique top cover 33 and having a respective motor connection flange 36, 37 adapted to the respective angle of the respective peripheral mixer axis 10, 12.
  • Each peripheral mixing tool 9, 11 is connected to the respective drive motor 27, 28 by means of a respective flexible coupling 38.
  • Figs. 12 and 13 illustrate simulated comparative test results regarding power consumption for sand mixing devices having a mixing capacity of approximately 3000 kilogrammes per batch.
  • Fig. 13 is a graphical representation of the power consumption for the sand mixing device 1 according to the present invention as illustrated in Figs. 1 to 3 .
  • Fig. 12 is a corresponding graphical representation of the power consumption for a prior art sand mixing device corresponding in size and sand mixing capacity to the sand mixing device 1 illustrated in Figs. 1 to 3 and having a corresponding central mixing tool, but having a mixing bowl arranged vertically so that the central mixer axis is vertical, and having two peripheral mixing tools arranged diametrically opposed in relation to the central mixer axis.
  • the central mixing tool of both tested sand mixing devices rotated at approximately 26 rpm.
  • the peripheral mixing tools of the prior art device rotated at approximately 1200 rpm, and the peripheral mixing tools of the sand mixing device 1 according to the present invention rotated at approximately 1000 rpm.
  • the first angular mixer position P 1 is 32 degrees
  • the first and second angular mixer positions differ by an angle P 12 of approximately 83 degrees
  • the mixing bowl is inclined at an angle M of approximately 8 degrees to the vertical
  • the first and second peripheral mixer axes 10, 11 form respective angles m of approximately 5 degrees with the central mixer axis 7.
  • the peripheral mixer axes of the peripheral mixing tools of the prior art device form respective angles of approximately 2 degrees with the central mixer axis.
  • Fig. 12 illustrates the power consumption of the central mixing tool by means of the curve 39 and the average thereof by means of the line 40. Furthermore, Fig. 12 illustrates the power consumption of one of the peripheral mixing tools by means of the curve 41 and the average thereof by means of the line 42.
  • Fig. 12 it is seen that in the prior art sand mixing device, the central mixing tool consumes an average of approximately 140 kilowatt, and the two peripheral mixing tools consume a total average of approximately 115 kilowatt (each peripheral mixing tool consumes slightly less than 60 kilowatt). This makes a total average power consumption for the prior art sand mixing device of approximately 255 kilowatt.
  • Fig. 13 illustrates the power consumption of the central mixing tool 6 by means of the curve 43. Furthermore, Fig. 13 illustrates the power consumption of the first peripheral mixing tool 9 by means of the curve 44 and the power consumption of the second peripheral mixing tool 11 by means of the curve 45.
  • Fig. 13 it is seen that in the sand mixing device 1 according to the present invention, the central mixing tool 6 consumes an average of approximately 130 kilowatt, and the two peripheral mixing tools 9, 11 consume a total average of approximately 100 kilowatt (each peripheral mixing tool consumes approximately 50 kilowatt). This makes a total average power consumption for the sand mixing device 1 according to the present invention of approximately 230 kilowatt.
  • a result of the simulated comparative test is that the sand mixing device 1 according to the present invention consumes 10 per cent less power than the prior art sand mixing device.
  • the mixing time required to achieve a satisfactory mixing result was also reduced from the prior art sand mixing device to the sand mixing device 1 according to the present invention.
  • the prior art sand mixing device requires 120 seconds of mixing to obtain a satisfactory result
  • the sand mixing device 1 according to the present invention only requires 110 seconds.
  • the sand mixing device 1 may perform the sand and water filling operation in approximately 10 seconds which is generally faster than standard prior art procedures which depend on tap pressure in that water is simply supplied from a tap.
  • the sand mixing device 1 may perform the emptying operation in approximately 20 seconds compared to approximately 30 seconds for the prior art sand mixing device.
  • the total batch processing time for the sand mixing device 1 according to the present invention may be reduced by at least 10 to 15 per cent compared to the prior art sand mixing device.
  • the sand or particulate material may typically be so-called green sand (also called clay bound sand), i.e. moulding material based on quartz sand, clay, coal dust and water.
  • green sand also called clay bound sand
  • other particulate materials and binder systems may be applied.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Claims (18)

  1. Dispositif de mélange de sable (1) ayant un récipient de mélange (2) qui est agencé de manière stationnaire sur un cadre de support (3) et qui inclut une paroi latérale périphérique (4) et une paroi inférieure (5), un outil de mélange central (6) étant agencé de manière rotative autour d'un axe de mélange central (7) du récipient de mélange (2) et ayant un nombre de lames (8) s'étendant le long de la paroi inférieure (5) à la paroi latérale périphérique (4), et au moins un outil de mélange périphérique (9, 11) étant agencé de manière rotative autour d'un axe de mélange périphérique (10, 12), caractérisé en ce que le récipient de mélange (2) est agencé dans une position inclinée sur le cadre de support (3) de manière à ce que l'axe de mélange central (7) du récipient de mélange (2) est incliné à un angle à la verticale, de manière à ce qu'un premier plan transversal (13), qui s'étend à travers le récipient de mélange (2) et qui inclut à la fois l'axe de mélange central (7) et une ligne horizontale qui s'étend dans un plan définissant la paroi inférieure (5), divise le récipient de mélange (2) en une partie inférieure (14) positionnée relativement plus bas et une partie supérieure (15) positionnée relativement plus élevée, et en ce qu'au moins un outil de mélange périphérique (9, 11) est agencé dans la partie inférieure (14) du récipient de mélange (2).
  2. Dispositif de mélange de sable selon la revendication 1, dans lequel l'axe de mélange central (7) du récipient de mélange (2) est incliné à un angle (M) d'entre 5 et 30 degrés, préférablement entre 7 et 25 degrés, plus préférablement entre 8 et 20 degrés, et encore plus préférablement entre 9 et 15 degrés à la verticale.
  3. Dispositif de mélange de sable selon la revendication 1 ou la revendication 2, dans lequel les lames (8) du récipient de mélange central (6) sont distribuées uniformément autour de l'axe de mélange central (7) du récipient de mélange (2), faisant en sorte que les lames avoissinantes (8) forment un certain angle entre elles, et dans lequel au moins l'un outil de mélange périphérique (9, 11) est agencé de manière à ce que l'angle entre n'importe quelle paire d'outils de mélange périphériques (9, 11) diffère d'un multiple entier de l'angle certain des lames avoissinantes (8) de l'outil de mélange central (6).
  4. Dispositif de mélange de sable selon l'une quelconque des revendications précédentes, dans lequel le dispositif de mélange de sable (1) inclut un premier outil de mélange périphérique (9) étant agencé de manière rotative autour d'un premier axe de mélange périphérique (10) à une première position de mélange angulaire (P1) autour de l'axe de mélange central (7) du récipient de mélange (2) et un deuxième outil de mélange périphérique (11) étant agencé de manière rotative autour d'un deuxième axe de mélange périphérique (12) à une deuxième position de mélange angulaire (P2) autour de l'axe de mélange central (7) du récipient de mélange (2), et dans lequel les premier et deuxième outils de mélange périphériques (9, 11) sont agencés dans la partie inférieure (14) du récipient de mélange (2).
  5. Dispositif de mélange de sable selon la revendication 4, dans lequel l'outil de mélange central (6) inclut quatres lames (8) distribuées uniformément autour de l'axe de mélange central (7) du récipient de mélange (2), faisant en sorte que les lames avoissinantes (8) forment un angle déterminé de 90 degrés, et dans lequel les premier et deuxième outils de mélange périphériques (9, 11) sont agencés de manière à ce que les première et deuxième positions de mélange angulaires (P1, P2) diffèrent d'entre 73 et 87 degrés, préférablement d'entre 78 et 85 degrés, et plus préférablement d'entre 82 et 84 degrés.
  6. Dispositif de mélange de sable selon la revendication 4 ou la revendication 5, dans lequel l'outil de mélange central (6) est adapté pour faire tourner du sable dans le récipient de mélange (2) dans une direction de rotation principale (R), définissant ainsi une direction en amont et une direction en aval dans le récipient de mélange (2), dans lequel le premier outil de mélange périphérique (9) est localisé en amont par rapport au deuxième outil de mélange périphérique (11), et dans lequel la première position de mélange angulaire (P1) diffère d'une position angulaire du premier plan transversal (13) d'entre 10 et 55 degrés, préférablement d'entre 20 et 45 degrés, et plus préférablement d'entre 30 et 35 degrés.
  7. Dispositif de mélange de sable selon la revendication 6, dans lequel le premier outil de mélange périphérique (9) est agencé plus élevé que le deuxième outil de mélange périphérique (11) par rapport à la paroi inférieure (5) du récipient de mélange (2).
  8. Dispositif de mélange de sable selon l'une quelconque des revendications précédentes, dans lequel l'outil de mélange central (6) est adapté à tourner dans une direction rotative principale (R), et dans lequel au moins l'un outil de mélange périphérique (9, 11) est adapté à tourner dans une direction rotative (r) à l'opposé de la direction rotative principale (R).
  9. Dispositif de mélange de sable selon l'une quelconque des revendications précédentes, dans lequel l'outil de mélange central (6) est adapté à tourner dans une direction rotative principale (R), où chaque lame (8) de l'outil de mélange central (6) s'étend d'un moyeu central (16) à une extrémité libre (17) du côté de la paroi latérale périphérique (4) au récipient de mélange (2), où chaque lame (8) se courbe du moyeu central (16) dans une direction rotative à l'opposé de la direction rotative principale (R), et où l'extrémité libre (17) de chaque lame (8) est fournie avec un bout de lame (18) ayant une surface supérieure (49) obliquant vers la paroi inférieure (5) du récipient de mélange (2) dans la direction rotative principale (R).
  10. Dispositif de mélange de sable selon l'une quelconque des revendications précédentes, dans lequel les axes de mélange périphériques respectifs (10, 12), perçus dans des vues transversales radiales respectives du récipient de mélange (2), forment des angles respectifs avec l'axe de mélange central (7) d'au moins 2 degrés, préférablement d'au moins 3 degrés, et plus préférablement d'au moins 4 degrés, de manière à ce que les extrémités inférieures des outils de mélanges périphériques (9, 11), respectivement, sont au moins légèrement pointues vers l'axe de mélange central (7).
  11. Dispositif de mélange de sable selon l'une quelconque des revendications précédentes, dans lequel la paroi latérale périphérique (4) est rotationnellement symétrique, telle que composée par des sections coniques et/ou cylindriques, autour de son axe de mélange central (7), et où l'axe de mélange central (7) est perpendiculaire à la paroi inférieure (5).
  12. Dispositif de mélange de sable selon l'une quelconque des revendications précédentes, dans lequel un deuxième plan transversal (19) à travers le récipient de mélange (2), incluant l'axe de mélange central (7) et s'étendant à des angles droits au premier plan transversal (13), définit une position angulaire du point le plus bas (LP) dans la partie inférieure (14) du récipient de mélange (2), et une position angulaire du point le plus élevé (HP) dans la partie supérieure (15) du récipient de mélange (2), et où une orifice de sortie (20) est agencée dans la paroi latérale périphérique (4), à côté de la paroi inférieure (5), à la position angulaire du point le plus bas (LP).
  13. Dispositif de mélange de sable selon la revendication 12, dans lequel le dispositif de mélange de sable (1) a pour commande de vider le récipient de mélange (2) en ouvrant l'orifice de sortie (20), faire tourner l'outil de mélange central (6) et au moins substantiellement réduire la vitesse de rotation des premier et deuxième outils de mélange périphériques (9, 11) ou arrêter ceux-ci.
  14. Dispositif de mélange de sable selon l'une quelconque des revendications précédentes, dans lequel le récipient de mélange (2) est fourni avec un revêtement supérieur horizontal (24) dans lequel une trémie d'alimentation de sable (25) est agencée.
  15. Dispositif de mélange de sable selon la revendication 17, dans lequel une ouverture de montage (26) dans le revêtement supérieur horizontal (24) est adaptée à la trémie d'alimentation de sable (25) de manière à ce que la trémie d'alimentation de sable peut être agencée dans au moins quatres orientations angulaires différentes autour d'un axe vertical.
  16. Dispositif de mélange de sable selon la revendication 14 ou la revendication 15, dans lequel chaque outil de mélange périphérique (9, 11) est entraîné par un moteur à entraînement direct respectif (27, 28) agencé sur le revêtement supérieur horizontal (24) par moyens d'une pièce de bride intermédiaire respective (29, 30) agencée sur le revêtement supérieur horizontal (24) et ayant une bride de raccord du moteur respective (31, 32) adaptée à l'angle respectif de l'axe de mélange périphérique (10, 12).
  17. Dispositif de mélange de sable selon la revendication 14 ou la revendication 15, dans lequel le récipient de mélange (2) est fourni avec un revêtement supérieur oblique (33) agencé en dessous du revêtement supérieur horizontal (24), dans lequel chaque outil de mélange périphérique (9, 11) est entraîné par un moteur à entraînement direct respectif (27, 28) agencé sur le revêtement supérieur oblique (33) par moyens d'une pièce de bride intermédiaire (34, 35) agencée sur le revêtement supérieur oblique et ayant une bride de raccord du moteur respective (36, 37) adaptée à l'angle respectif de l'axe de mélange périphérique respectif (10, 12).
  18. Procédé de mélange de sable dans un récipient de mélange (2) qui est maintenu de manière stationnaire sur un cadre de support (3) et qui inclut une paroi latérale périphérique (4) et une paroi inférieure (5), par quel moyen un outil de mélange central (6) est tourné autour d'un axe de mélange central (7) du récipient de mélange et a un nombre de lames (8) s'étendant à la paroi latérale périphérique (4) et glissant au dessus de la paroi inférieure (5), et par quel moyen au moins un outil de mélange périphérique (9, 11) est tourné autour d'un axe de mélange périphérique (10, 12), caracatérisé en ce que le récipient de mélange (2) est maintenu dans une position inclinée sur le cadre de support (3) de manière à ce que l'axe de mélange central (7) du récipient de mélange (2) est incliné à un angle à la verticale, de manière à ce qu'un premier plan transversal (13) qui s'étend à travers le récipient de mélange (2) et qui inclut à la fois l'axe de mélange central (7) et une ligne horizontale s'étendant dans un plan définissant la paroi inférieure (5), divise le récipient de mélange (2) en une partie inférieure (14) positionnée relativement plus bas et une partie supérieure (15) positionnée relativement plus élevée, et en ce qu'au moins un outil de mélange périphérique (9, 11) est tourné dans la partie inférieure (14) du récipient de mélange (2).
EP15767268.4A 2015-07-29 2015-07-29 Dispositif et procédé de mélange de sable Active EP3328529B1 (fr)

Priority Applications (1)

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PL15767268T PL3328529T3 (pl) 2015-07-29 2015-07-29 Urządzenie do mieszania masy formierskiej i sposób mieszania masy formierskiej

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PCT/IB2015/055719 WO2017017497A1 (fr) 2015-07-29 2015-07-29 Dispositif et procédé de mélange de sable

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CN111005710B (zh) * 2019-12-19 2022-03-18 中石化四机石油机械有限公司 输砂混排系统及控制方法
CN119263894B (zh) * 2024-12-10 2025-03-14 内蒙古民族大学 一种节能型畜禽粪便堆肥发酵装置及发酵方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1271334A (fr) 1960-09-21 1961-09-08 Buss Ag Procédé et dispositif pour le mélange, le pétrissage et le malaxage de matériaux en poudre ou en grains
US3770251A (en) * 1971-11-08 1973-11-06 F Herfeld Apparatus for mixing plastics materials and the like during processing thereof
DE2318692B1 (de) * 1973-04-13 1974-08-08 Badische Maschinenfabrik Gmbh, 7500 Karlsruhe Mischer für Formsand
NL7807794A (en) * 1978-07-20 1978-11-30 Nautamix Patent Ag Mixing device for liquid and solid phases - employs gas injection to fluidise mix and reduce agitator load
DE3312869A1 (de) 1983-04-09 1984-10-11 Eirich, Hubert Vorrichtung zum aufbreiten von fliessfaehigen materialien
DE3341674C2 (de) * 1983-11-18 1986-11-27 Alwin Berents GmbH & Co KG, 2805 Stuhr Vorrichtung zum Mischen und Homogenisieren von vorzugsweise pastösem Mischgut
DD266465A3 (de) * 1987-08-12 1989-04-05 Giesserei Anlagenbau Und Gusse Vorrichtung zum mischen
DE3901774C2 (de) 1989-01-21 1995-03-30 Mann & Hummel Filter Mischer mit einem Mischbehälter, insbesondere für Schüttgut
WO2002074467A1 (fr) * 2001-03-20 2002-09-26 Nv Engineering Gmbh Procede et dispositif de traitement refroidissant de materiaux en vrac chauds
JP3521192B2 (ja) * 2001-04-10 2004-04-19 川崎重工業株式会社 連続式造粒機及び連続式造粒方法
JP2011115731A (ja) * 2009-12-04 2011-06-16 Central Motor Co Ltd 容器内攪拌装置ユニット
CN204365166U (zh) * 2014-12-29 2015-06-03 四川省祥业机械铸造有限公司 一种涂料搅拌桶

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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CN108136349A (zh) 2018-06-08

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