The present invention relates to a device for agitating and mixing two or more kinds of bulk materials, for example, raw materials of cement, row materials of chemicals, raw materials of pharmaceuticals, ceramics, raw materials of cosmetics, raw materials of metals, fertilizers, feeds, raw materials of paints, raw materials of foods, sludge, and magnetic abrasives.
Commonly known as conventional agitating and mixing devices are a type in which bulk materials are put into a container and the container is rotated and revolved and a type comprising agitating blades in a container for mixing bulk materials.
However, the former type has a problem of its complex structure and the latter type has problems that it is difficult to uniformly mix bulk materials and considerable labor is required for maintenance, for example, cleaning the agitating blades.
The present invention is made for the purpose of solving the aforementioned problems and the object is to provide an agitating and mixing device with a simple structure which can uniformly mix bulk materials.
In order to achieve the aforementioned object, an agitating and mixing device in an aspect of the present invention comprises: a rotary shaft 6 to be rotated by a driving means 3; a container outer shell 7 fixed to the rotary shaft to tilt relative to the rotary shaft; and an inner shell 9 fixed inside the container outer shell, wherein bulk materials are put into a receiving space 13 formed between the container outer shell and the inner shell and are then agitated and mixed.
An agitating and mixing device in a further aspect of the invention comprises: a rotary shaft 6 to be rotated by a driving means; an inner shell 9 fixed to the rotary shaft to tilt relative to the rotary shaft; a container outer shell 7 fixed around the inner shell; an automatic feed/discharge unit 33 for bulk materials which is mounted to the container outer shell via a rotary joint 35; a screw blade 42 formed on said rotary shaft inside the automatic feed/discharge unit, wherein the bulk materials are put into a receiving space formed between the container outer shell and the inner shell by normal or reverse rotation of said rotary shaft, are then agitated and mixed, and after that are discharged by reverse or normal rotation of said rotary shaft.
An agitating and mixing device in a further aspect of the invention comprises: a driving gear 56, to be rotated by a driving means, and a plurality of supporting gears 55; a pair of rotary rings 53, 54 supported by said gears, a container outer shell 7 fixed to the rotary rings to tilt relative to the rotary rings; and an inner shell 9 fixed inside the container outer shell, wherein bulk materials are put into a receiving space formed between the container outer shell and the inner shell and are then agitated and mixed.
An agitating and mixing device in a further aspect of the invention comprises: a pair of rotary shaft halves 6a, 6b to be rotated by a driving means; a plurality of container outer shells 7A-7E fixedly disposed between the rotary shaft halves via partition plates 57; inner shells 9 fixed inside the container outer shells, respectively; openings 59 formed in said partition plates, respectively; and flap doors 61 arranged on said openings, respectively, wherein two container outer shells 7A and 7E positioned at both ends are fixed to the rotary shaft halves 6a, 6b to tilt relative to the rotary shaft halves 6a, 6b, respectively and the middle container outer shells 7B-7D are arranged to form V-like shapes as seen in the front view, and wherein bulk materials are conveyed successively into and through receiving spaces formed between the container outer shells and the inner shells, whereby the bulk materials agitated and mixed.
An agitating and mixing device in a further aspect of the invention, in combination with any of the embodiments above, being characterized in that said container outer shell(s) and said inner shell(s) are polygonal.
An agitating and mixing device in a further aspect of the invention, in combination with any of the embodiments above, being characterized by further including heat exchangers 26, 27 into which steam or chilled water is supplied and which are attached to the outer surface(s) of said container outer shell(s) and/or the inner surface(s) of said inner shell(s).
An agitating and mixing device in a further aspect of the invention, in combination with any of the embodiments above, being characterized by further including a plurality of agitating blades 49 disposed between said container outer shell(s) and said inner shell(s).
An agitating and mixing device in a further aspect of the invention, in combination with any of the embodiments above, being characterized by further including partition walls 43, 44 disposed between said container outer shell(s) and said inner shell(s) and a plurality of agitating blades disposed between the partition walls. It should be noted that the numerals attached to the aforementioned components are intended to be referred with the attached drawings just for providing an easier understanding of the present invention and do not limit the present invention at all.
An agitating and mixing device in a further aspect of the invention comprises a rotary shaft to be rotated by a driving means; a container outer shell fixed to the rotary shaft to tilt relative to the rotary shaft; and an inner shell disposed inside the container outer shell, wherein bulk materials are put into a receiving space formed between the container outer shell and the inner shell and are then agitated and mixed by rotating said container outer shell and said inner shell in directions opposite to each other.
FIGS. 1(A), 1(B) show an embodiment of the agitating and mixing device of the present invention,
FIG. 1(A) is a front view thereof and FIG. 1(B) is a schematic sectional view taken along a line B—B in FIG. 1(A);
FIGS. 2(A) and 2(B) are enlarged views showing main parts of FIG. 1(A);
FIGS. 3(A)-3(C) are illustrations for explaining works of the present invention;
FIGS. 4(A), 4(B) show a variation of the embodiment of
FIGS. 5(A)-5(C) show a variation of the embodiment of
FIGS. 7(A), 7(B) show another variation of the embodiment of
FIGS. 8(A)-8(D) are schematic sectional views showing variations of the embodiment of
FIGS. 9(A)-9(D) are schematic sectional views showing variations of the embodiment of
FIGS. 10(A), 10(B) show another embodiment of the agitating and mixing device of the present invention, wherein FIG. 10(A) is a front view thereof and FIG. 10(B) is a schematic sectional view taken along a line B—B in FIG. 10(A);
FIGS. 11(A), 11(B) show another embodiment of the agitating and mixing device of the present invention, wherein FIG. 11(A) is a front view thereof and FIG. 11(B) is a schematic sectional view taken along a line B—B in FIG. 11(A);
FIG. 14(A) is a sectional view taken along a line A—A of
FIG. 14(B) is a view taken along a line B—B of
FIGS. 18(A), 18(B) show yet another embodiment of the agitating and mixing device of the present invention, wherein FIG. 18(A) is a front view thereof and FIG. 18(B) is a view as seen in a direction of arrow B of FIG. 18(A);
FIGS. 19(A), 19(B) show a variation of the embodiment of FIGS. 18(A), 18(B), wherein FIG. 19(A) is a front view thereof and FIG. 19(B) is a view as seen in a direction of arrow B of FIG. 19(A);
FIGS. 20(A), 20(B) show another embodiment of the agitating and mixing device of the present invention, wherein FIG. 20(A) is a front view thereof, and FIG. 20(B) is a partially enlarged sectional view of FIG. 20(A);
FIG. 23(A) is a sectional view taken along a line Y—Y in FIG. 22 and FIG. 23(B) is a sectional view showing main parts.
Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. FIGS. 1(A) through 3(C) show an embodiment of the agitating and mixing device of the present invention, FIG. 1(A) is a front view thereof, FIG. 1(B) is a schematic sectional view taken along a line B—B in FIG. 1(A), FIGS. 2(A) and 2(B) are enlarged views showing main parts of FIG. 1(A), and FIGS. 3(A)-3(C) are illustrations for explaining works of the present invention.
As shown in FIG. 1(A), the agitating and mixing device 1 of this embodiment comprises a frame 2, an adjustable speed motor (driving means) 3 attached to the frame 2, a pair of supports 4, 4 standing on the frame 2, a rotary shaft 6 rotatably supported by bearings 5 on the supports 4, a polygonal container outer shell 7 secured to the rotary shaft 6, a polygonal inner shell 9 which is analogously fixed inside the container outer shell 7, a driven sprocket (or pulley) 10 connected to one end of the rotary shaft 6, and a driving sprocket (or pulley) 12 coupled to the driven sprocket 10 via a chain (or belt) 11. The driving sprocket 12 is connected to the adjustable speed motor 3. The rotary shaft 6 extends through the container outer shell 7 in the horizontal direction. The container outer shell 7 is arranged such that its axis tilts relative to the rotary shaft 6 and side plates 7c of the container outer shell 7 are secured to the rotary shaft 6.
Formed between the container outer shell 7 and the inner shell 9 is a receiving space 13 for receiving bulk materials to be agitated and mixed. Inside the receiving space 13, a plurality of wires 14 are arranged to extend between the right and left side plates 7c as necessary. Among the shell plates composing the polygon of the container outer shell 7, two adjacent shell plates are biparting lids 7a, 7b which are provided with handles 15 and of which one sides are hinged by hinges 16 so that the biparting lids 7a, 7b can freely pivot. As shown in FIG. 2(B), the other sides of the biparting lids 7a, 7b can be latched to each other by latching means 17 comprising a hook 17a and a latch 17b. As shown in FIG. 2(A), stopper plates 19a are fixed to both side edges of the biparting lids 7a, 7b and clamping handles 19b are rotatably disposed to the side plates 7c of the container outer shell 7. The stopper plates 19a and the clamping handles 19b compose clamping means 19. The biparting lids 7a, 7b and side plates 7c can be tightly closed by the clamping means 19. The container outer shell 7 has a sight glass 20 formed at arbitrary locations for observing the condition of agitation and mixing.
Hereinafter, works of the agitating and mixing device having the aforementioned structure will be described. After releasing the latch and clamping of the latching means 17 and the clamping means 19, the biparting lids 7a, 7b are opened by operating the handles 15 as shown by dotted lines of FIG. 1(B) to put bulk materials into receiving space 13 and, after that, the biparting lids 7a, 7b are closed. Then, the adjustable speed motor 3 is driven and the speed of rotation is adjusted suitably for agitating and mixing the bulk materials to rotate the rotary shaft 6. Therefore, the container outer shell 7 is rotated. When the agitation and mixing is finished, the motor 3 is stopped at a position where the biparting lids 7a, 7b face downward. The biparting lids 7a, 7b are opened to discharge the agitated and mixed bulk materials. To agitate and mix another bulk materials after discharging the agitated and mixed bulk materials, the motor is driven after closing the biparting lids 7a, 7b and is stopped at a position where the biparting lids 7a, 7b face upward. After that, the aforementioned processes are repeated.
According to the present invention, since the container outer shell 7 and the inner shell 9 are polygonal, bulk materials caught by corners fall down so as to generate turbulence of the bulk materials by the rotation of the container outer shell 7 in a direction of arrow as shown in FIG. 3(A), thereby uniformly agitating and mixing the bulk materials. In addition, since the container outer shell 7 is arranged such that its axis tilts relative to the rotary shaft 6, every rotation of the rotary shaft 6 by 180° reverses the tilting direction of the container outer shell 7 from right to left or from left to right as shown in FIGS. 3(B) and 3(C). As a result, the bulk materials move in the receiving space 13 like waves as shown by dotted lines so that bulk materials in an upper layer flow below the bulk materials in an under layer at the opposite side, thereby uniformly agitating and mixing the bulk materials.
In case of mixing bulk materials which are easily caked by agitation, wires 14 are arranged inside the receiving space 13 so that caked bulk materials are hit and broken by the wires 14.
FIGS. 4(A), 4(B) show a variation of the embodiment of
FIGS. 5(A)-5(C) show a variation of the embodiment of
FIGS. 7(A), 7(B) show another variation of the embodiment of
FIGS. 8(A)-8(D) show variations of the embodiment of
FIGS. 9(A)-9(D) show variations of the embodiment of
FIGS. 10(A), 10(B) and FIGS. 11(A), 11(B) show another embodiments of the agitating and mixing device of the present invention, wherein FIGS. 10(A), 11(A) are front views thereof and FIGS. 10(B), 11(B) are schematic sectional views taken along a line B—B in FIGS. 10(A), 11(A), respectively. In the following embodiments, corresponding component parts are designated with the same reference numerals utilized in the aforementioned embodiment, thus omitting the detail description of such component parts.
In the embodiment of FIGS. 10(A), 10(B), the biparting lids 7a, 7b and clamping means 19 are driven by air cylinders 23. Air is supplied to the air cylinders 23 through an air-supply joint 24, an air passage in the rotary shaft 6, and pipes 25.
In the embodiment of FIGS. 11(A), 11(B), the agitating and mixing device is further provided with a drying function or a cooling function. The container outer shell 7 is provided on its outer surface with a plurality of heat exchangers 26 and the inner shell 9 is also provided on its inner surface with a heat exchanger 27. A steam or chilled water supply joint 29 is connected to one end of the rotary shaft 6 so that steam or chilled water is supplied to the heat exchangers 26, 27 through a passage in the rotary shaft 6 and pipes 30. Connected to the other end of the rotary shaft 6 is a moisture suction joint 31, whereby moisture within the receiving space 13 is discharged through a pipe 32.
Hereinafter, works of this embodiment will be described. The shut-off damper 40 is opened and bulk materials are supplied from the feed hopper 37. As the rotary shaft 6 is rotated in the direction indicated by a solid-line arrow in
FIGS. 13-14(C) show still another embodiment of the agitating and mixing device of the present invention, wherein
In this embodiment, an outside wall 43 and an inside wall 44 (partition walls) which are composed of continuous arc faces are arranged to face each other so that a receiving space 13 is formed between the outside wall 43 and the inside wall 44 and heating steam chambers 45, 46 are formed between the container outer shell 7 and the outside wall 43 and between the inner shell 9 and the inside wall 44, respectively. A plurality of agitating shafts 47 are disposed inside the receiving space 13 and are each provided with a plurality of agitating blades 49. Fixed to one end of each agitating shaft 47 is a pulley 50. A driving belt or chain 51 is wound around the pulleys via tension pulleys 52. A driving motor 53 is connected to one of the pulleys 50. It should be noted that the structure of an automatic feed/discharge unit 33 is the same as that of the embodiment shown in FIG. 12.
Hereinafter, works of this embodiment will be described. The rotary shaft 6 is driven by the motor 3 to rotate the container outer shell 7 as shown by a solid-line arrow in FIG. 14(A). In addition, the driving motor 53 is driven to rotate the agitating shafts 47 as shown by a dotted-line arrow. Accordingly, bulk materials are further uniformly agitated and mixed by agitation of the agitating blades 49 in addition to the agitation by the rotation of the container outer shell 7. As shown in FIG. 14(C), some or all of agitating blades 49a, 49b on a agitating shaft 47 may be arranged to tilt in an opposite direction of the tilting direction of corresponding ones of the adjacent agitating shaft 47. According to this arrangement, bulk materials are conveyed from right to left and left to right, thereby further uniformly agitating and mixing the bulk materials.
FIGS. 18(A), 18(B) show yet another embodiment of the agitating and mixing device of the present invention, wherein FIG. 18(A) is a front view thereof and FIG. 18(B) is a view as seen in a direction of arrow B of FIG. 18(A). In any of the aforementioned embodiments, the container outer shell 7 is rotated by the rotary shaft 6. In this embodiment, however, rotary rings 53, 54 are employed instead of the rotary shaft 6.
That is, the rotary rings 53, 54 are fixed to the both sides of the tilt container outer shell 7. One of the rotary ring 53 is supported by a supporting roller (or gear) 55 from below and the other rotary ring 54 is supported by a supporting gear 55 and a driving gear 56. The driving gear 56 is meshed with external teeth of the rotary ring 54. The supporting gear 55 and the driving gear 56 are supported to the supports via bearings 5. A driven sprocket 10 is arranged on the other end of the driving gear 56 and is coupled to a driving sprocket (or pulley) 12 via a chain (or a belt) 11.
According to the present invention, the employment of the rotary rings 53, 54 enables the reduction in size of the container outer shell 7, thus reducing the size of the device itself, as for the same capacity, in a comparison of the case that the rotary shaft 6 extends through the container outer shell 7.
FIGS. 19(A), 19(B) show a variation of the embodiment of FIGS. 18(A), 18(B), wherein FIG. 19(A) is a front view thereof and FIG. 19(B) is a view as seen in a direction of arrow B of FIG. 19(A). Also in this variation, rotary rings 53, 54 are employed instead of the rotary shaft 6 similarly to the embodiment of FIGS. 18(A), 18(B).
In this variation, the frame 2 is formed in a box shape comprising sub frames 2a, 2b. Four supporting gears (or rollers) 55 are disposed on each of the upper and lower sub frames 2a, 2b by bearings 55a. The tilt container outer shell 7 are supported by two rotary rings 53, 54 meshed with and supported by the supporting gears 55. External teeth of one of the rotary rings 54 are meshed with a driving gear 12 so that the rotary ring 54 is connected to the driving motor 3 through the driving gear 12. According to this variation, the device fits in the sub frames 2a, 2b, thus further reducing the size of the device.
FIGS. 20(A), 20(B) and
An agitating and mixing device of this embodiment comprises a frame 2, an adjustable speed motor (driving means) 3 attached to the frame 2, a support 4 standing on the frame 2, a main shaft 6a which is supported to an upper portion of the frame 2 via a bearing 5 such that the main shaft 6a is horizontally rotatable, a rotary shaft 6 fixed to the outer periphery of the main shaft 6a, a rotation converter 70 which is fixed to the rotary shaft 6 and is arranged to tilt relative to the rotary shaft 6, a polygonal container outer shell 7 rotatably supported to the rotation converter 70, a bevel gear 71 fixed to one side of the container outer shell 7, and a ring gear 72 secured to the support 4 coaxially with the rotary shaft 6. The bevel gear 71 and the inner teeth of the ring gear 72 are meshed with each other. The shaft 7f of the container outer shell 7 is connected to the rotation converter 70 via a bearing 74. The container outer shell 7 is provided with a flap lid 73 formed at the other side thereof.
In this embodiment, as the rotary shaft 6 is rotated, the container outer shell 7 is revolved, just like swing of one's head, in a direction of arrow B as shown in FIG. 21. In addition, by the revolution of the container outer shell 7, the bevel gear 71 is successively meshed and moved along the ring gear 72 so that the container outer shell 7 is rotated on its axis in a direction of arrow A, thereby effectively mixing two or more kinds of bulk materials. Loading of bulk materials into the container outer shell 7 is conducted by opening the flap lid 73 in a position shown by dotted lines and the discharge of the bulk materials is conducted in a position shown by solid lines in FIG. 20(A).
FIG. 22 and FIGS. 23(A), 23(B) show further another embodiment of the agitating and mixing device of the present invention, wherein
An agitating and mixing device 1 of this embodiment comprises a frame 2, an adjustable speed motor (driving means) 3 attached to the frame 2, a pair of supports 4, 4 standing on the frame 2, rotary shaft halves 6a, 6b which are rotatably supported to upper portions of the support 4, 4 by bearings 5, 5, respectively. A driven sprocket (or pulley) 10 is connected to one end of one rotary shaft half 6a and is coupled to a driving sprocket (or pulley) 12 via a chain (or belt) 11. The driving sprocket 12 is connected to the adjustable speed motor 3.
Between the rotary shaft halves 6a and 6b, a plurality of polygonal container outer shells 7A, 7B, 7C, 7D, 7E are continuously joined to each other via partition plates 57. The right-most container outer shell 7A and the left-most container outer shell 7B in
The rotary shaft half 6a is fixed to the inner shell 9 in the right-most container outer shell 7A. In addition, a rotary tube 34 similar to that shown in
Each of the partition plates 57 between respective adjacent ones of the container outer shells 7A through 7E is formed with an opening 59 to which a flap door 61 is disposed such that the door 61 can pivot about a pivot 60 secured to the partition plate 57 as shown in FIGS. 23(A), 23(B). The flap door 61 is driven by a driving means, not shown, to control the open area of the opening 59. A guide plate 62 is arranged on the opposite side of the flap door 61 with respect to the opening 59 to prevent backflow of bulk materials while bulk materials flow in a direction of arrow in FIG. 23(B).
Hereinafter, works of this embodiment will be described. As bulk materials are supplied from the feed hopper 37 and the rotary shaft half 6a is rotated in the direction indicated by a solid-line arrow in
As apparent from the above description, the agitating and mixing device according to the present invention comprises a rotary shaft to be rotated by a driving means, a container outer shell fixed to the rotary shaft to tilt relative to the rotary shaft, and an inner shell fixed inside the container outer shell. Bulk materials are put into a receiving space formed between the container outer shell and the inner shell and are then agitated and mixed. Therefore, uniform agitation and mixing of bulk materials is achieved with a simple structure.
It should be noted that bulk materials may be agitated and mixed by rotating the container outer shell and the inner shell in directions opposite to each other.
Number | Date | Country | Kind |
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2001-107493 | Apr 2001 | JP | national |
2001-276455 | Sep 2001 | JP | national |
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Number | Date | Country | |
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20020145938 A1 | Oct 2002 | US |