JP4843662B2 - Rotating stirrer - Google Patents

Description

  The present invention relates to a rotary stirring device for stirring various materials such as ready-mixed concrete, feed, and various powders.

  Conventionally, a device has been proposed in which corners of the upper and lower surfaces of a cubic or rectangular parallelepiped container are supported by a horizontal axis, and the container is rotated by rotationally driving the axis, thereby mixing and stirring the powder inside the container. (Patent Documents 1 and 2).

  In addition, a liquid jet nozzle is provided inside the container through the rotation center axis of the container, and a solution is sprayed from the nozzle to agitate the feed and the solution inside the container (Patent Document 3).

  These mixing and stirring apparatuses are characterized in that the stirring efficiency is high because the rotating container is a cube or a rectangular parallelepiped.

No.41-2476 No. 47-26666 Shokai 52-131665

  By the way, when the above-mentioned conventional apparatus mixes and stirs a liquid such as a powder such as a concrete material and water, for example, in the apparatuses of Patent Documents 1 and 2, the liquid is previously put in the container as a part of the material. Therefore, it cannot be said that the stirring and mixing efficiency is good.

  Moreover, although the apparatus of patent document 3 can spray a liquid from the nozzle inside a container at the time of mixing and stirring, since the nozzle is provided in the side surface of the container, it cannot be said that a liquid can be mixed and stirred efficiently.

  The present invention has been made in view of the above problems. For example, in a rotary stirring device for rotating a rectangular parallelepiped box-shaped container, the liquid can be ejected at a high pressure in the direction of the rotation center axis. An object of the present invention is to provide a rotary stirring device that can improve the mixing efficiency of the liquid and the liquid.

In order to achieve the above object, the present invention
First, the vicinity of the corners of the top surface of the box-shaped container and the vicinity of the corners of the bottom surface corresponding to the corners on the diagonal line of the corners of the top surface have a rotation axis having a common rotation center axis. A rotary stirring device for rotating the box-shaped container by rotating and supporting at least one of the rotating shafts by a driving means, and passing through the rotating shaft to the inside of the container. There is provided a liquid supply passage that communicates, and there is provided injection means that can inject liquid from the end of the liquid supply passage in the container along the rotation center axis, and a high pressure is applied to the liquid supply passage during the rotation of the box-shaped container. It is comprised by the rotary stirring apparatus characterized by being comprised so that the liquid of this can be supplied.

  The box-shaped container can be constituted by, for example, a rectangular parallelepiped stirring container (1). The position of the rotating shaft is near the corner such as slightly above or slightly below the corner, but may be at the corner. The drive means can be constituted by a drive motor (M), for example. The liquid supply passage includes, for example, a supply pipe (21), an internal pipe (8c) of a rotary joint (8), a rotor (8a), a hollow rotating shaft (4a), a guide pipe (11a, 11b), and the like. can do. The injection means can be constituted by, for example, an injection nozzle (12a, 12b) provided at the tip of the guide pipe (11a, 11b), but the spray nozzle may be provided integrally at the tip of the guide pipe. With this configuration, since the high-pressure liquid can be ejected in the direction of the rotation center axis from the ejection nozzle during stirring by rotating the box-shaped container, the high-pressure ejection liquid is brought into contact with the high-pressure ejection liquid and the stirring material. Acts as a stirring member, which can promote stirring of the material.

  Second, at least two branch liquid supply passages are provided from the inside of the rotating shaft, the liquid supply passages are provided so as to communicate from the branch liquid supply passages into the container, and the ends of the liquid supply passages in the container are provided. At least two jetting means capable of jetting liquid along the rotation center axis from the section, and jetting high-pressure liquid into the container from the jetting means rotating together with the container during rotation of the box-shaped container It is comprised so that it may obtain, It comprises by the rotary stirring apparatus of the said 1st characterized by the above-mentioned.

  The two branched liquid supply passages can be constituted by, for example, two guide pipes (11a, 11b) branched from the rotation shaft (4a) through the openings (4a ', 4a'). With this configuration, the high-pressure liquid ejected from at least two ejecting means along with the rotation of the container can be spirally rotated along the rotation center axis, thereby promoting stirring and mixing of the internal material. be able to.

  Thirdly, the at least two injection means are provided along a virtual annular line with the rotation center axis as a center, and are constituted by the rotary stirring device according to the second aspect. .

  The said injection means can be provided, for example in two places 180 degrees apart from each other along the virtual annular line (R).

  Fourth, the at least two ejecting means ejects high-pressure liquid along a virtual cylindrical shape having a diameter of the virtual annular line as the box-shaped container rotates. 3 is constituted by the rotary stirring device.

  Accordingly, since the high-pressure liquid is jetted at a high pressure along a virtual cylindrical shape centering on the rotation center axis of the box-shaped container, the internal material comes into contact with the high-pressure liquid to promote stirring and mixing.

  Fifthly, the jetting means is constituted by the rotary stirring device according to the first feature, which jets the high-pressure liquid linearly or in a fan shape along the rotation center axis.

  Therefore, since the high-pressure liquid is jetted at a high pressure along the rotation center axis of the box-shaped container, the internal material is brought into contact with the high-pressure liquid to promote stirring and mixing.

  As described above, since the present invention can jet a high-pressure liquid in the direction of the rotation center axis from the jet nozzle during stirring by rotating the box-shaped container, the material can be efficiently stirred, Mixing and stirring the material and the liquid can be promoted by the liquid jetted at high pressure in the direction of the rotation center axis, and the time until the stirring is completed can be shortened.

Further, the injection of high pressure fluid along the rotational center axis of the box-shaped container, to be injected over the entire range of the central axis, despite the absence in the stirring blade or the like inside the container, high-pressure injection The liquid can act as a stirring member to promote mixing and stirring.

  Further, since the high-pressure liquid is jetted at a high pressure along a virtual cylindrical shape centering on the rotation center axis of the box-shaped container, the internal material can abut on the high-pressure liquid to promote stirring and mixing.

  Hereinafter, the rotary stirring device according to the present invention will be described in detail.

  FIG. 1 is a side view of the rotary stirring device, FIG. 2 is a plan view of the same apparatus, and FIG. 3 is a perspective view of the same apparatus.

In these drawings, reference numeral 1 denotes a stirring vessel (box-type vessel), which comprises a square upper surface 1a, a square bottom surface 1b, and four side surfaces 1c ₁ , 1c ₂ , 1c ₃ , 1c _{4 each having a} rectangular shape. The overall shape is a quadrangular prism. The length of the side m in the longitudinal direction of each side surface is longer than the length of one side of the upper surface 1a, and forms a rectangular parallelepiped box as a whole.

  The inside of the stirring vessel 1 is hollow, and there are no stirring blades or rotating shafts inside, and an opening / closing lid 2 for charging material is opened on the top surface 1a, and an opening / closing lid 3 for discharging material is opened / closed on the bottom surface 1b. It is provided freely. Reference numerals 2 'and 3' denote handles for locking the open / close lid.

In this stirring vessel 1, a hollow horizontal rotating shaft 4a is connected and fixed slightly below an upper corner P1 (the rightmost vertex of the upper surface 1a) constituted by the upper surface 1a, the side surface 1c ₂ and the side surface 1c ₃ . Furthermore, the horizontal rotation shaft 4a and the rotation shaft are shared by slightly above the lower corner portion P2 (the leftmost vertex of the bottom surface 1b) constituted by the bottom surface 1b and the side surfaces 1c ₁ and 1c ₄ . The horizontal rotation shaft 4b is connected and fixed and supported. Accordingly, in the upper corner P1 and the lower corner P2, the corner of the bottom surface 1b corresponding to the diagonal corner P1 ′ of the corner P1 in the upper surface 1a becomes the lower corner P2. Have a relationship.

  Then, the horizontal rotating shafts 4a and 4b are rotatably supported horizontally on bearings 7a and 7b fixed to horizontal support surfaces 6 and 6 having the same height through bearing mechanisms 7 'and 7', respectively. Thus, the stirring vessel 1 is configured to be able to rotate in the direction of arrow A while being supported by the rotation shafts 4a and 4b around the rotation center axis S common to the rotation shafts 4a and 4b.

13a is an L-shaped angle for connecting and fixing the rotating shaft 4a and the side surfaces 1c ₂ and 1c _{3 of the} container 1, and 13b is a connecting and fixing of the rotating shaft 4b and the side surfaces 1c ₁ and 1c _{4 of the} container 1. The rotary shafts 4a and 4b are fixed to the vertical portions 13a ′ and 13b ′ so as to support the rotary shafts 4a and 4b, and the ends of the horizontal portions 13a ″ and 13b ″ are connected to the vertical portions 13a ′ and 13b ′. By connecting and fixing to the side surfaces 1c _{1 to} 1c ₄ of the container 1, the rotating shafts 4a and 4b and the container 1 are securely fixed.

  As described above, the stirring vessel 1 is supported in a state where the vicinity of the upper and lower corners P1 and P2 is inclined and supported by the rotation shafts 4a and 4b having the horizontal rotation center axis S in common. 1), the upper corner P1 of the upper surface 1a with the upper surface 1a obliquely upward and the bottom surface 1b obliquely downward, and the lower corner of the bottom surface 1b located diagonally to the corner P1. The part P2 is in a state of being rotatably supported.

  In this way, by supporting a slightly lower side of the upper corner P1 and a slightly upper side of the lower corner P2 of the rectangular parallelepiped container 1, a longitudinal sectional view from the right to the left in the state of FIG. (X1-X1 sectional view (FIG. 4), X2-X2 sectional view (FIG. 5), X3-X3 sectional view (FIG. 6), X4-X4 sectional view (FIG. 7), X5-X5 sectional view As shown in the figure (FIG. 8), the vertical cross-sectional shape of the container 1 perpendicular to the rotation center axis S is always asymmetric in the vertical direction and the left-right direction around the rotation center axis S, and each cross-sectional shape also changes. Therefore, when the stirring container 1 is rotated by the rotating shafts 4a and 4b, the contents of the container 1 are irregularly stirred and mixed regardless of the position, thereby promoting stirring and mixing of the contents, The contents can be stirred and mixed very efficiently.

The horizontal rotating shaft 4a is hollow as described above, and two openings 4a ′ and 4a ′ are formed on the wall surface of the rotating shaft 4a which is 180 degrees apart from each other between the bearing 7a and the connecting portion of the container 1. (See FIG. 2), and ends of the guide pipes 11a and 11b are connected to the openings 4a ′ and 4a ′ in a direction perpendicular to the rotation shaft 4a. These guide pipes 11a and 11b are bent at right angles so as to go in the direction of the stirring vessel 1 at the bent portions 11a 'and 11b' in the course of the path, and are each in the direction of the vessel 1 parallel to the rotation shaft 4a. Extend each tip from the sides 1c ₂ , 1c _{3 of the} container 1 to the inside, and further extend each tip 11a ″, 11b ″ parallel to the rotation center axis S inside the container 1, At each end, spray nozzles 12a and 12b for liquid such as water are connected. Thus, the injection nozzles 12a and 12b are provided so that the linear interval passing through the rotation center axis S is L.

  Accordingly, the guide pipes 11a and 11b are installed in parallel with the rotation shaft 4a, that is, the rotation center axis S, and the liquid ejected from the ejection nozzles 12a and 12b is also ejected along the rotation center axis S. It is configured as follows.

That is, the two injection nozzles 12a and 12b are 180 degrees to each other along a virtual annular line R (see FIGS. 4 and 9) that is a rotation locus of the injection nozzles 12a and 12b around the rotation center axis S. It is provided in the position which has the angle difference of. The number of the guide pipes 11a, 11b and the injection nozzles 12a, 12b is not limited to the above two, but is three along the virtual annular line R, four at intervals of 120 degrees, four at intervals of 90 degrees, and others. plurality and through the angle may be provided.

  The horizontal support surfaces 6 and 6 are provided at the same height on the trapezoidal support frames 9 and 9, respectively, and the support frames 9 and 9 are parallel to the opposing sides 10a and 10b of the rectangular lower frame 10, respectively. Is fixed upright.

  The horizontal rotating shaft 4a is hollow as described above, and one end thereof is connected to the hollow rotor 8a of the rotary joint 8 outside the bearing 7a.

  An internal pipe 8c for guiding liquid is provided between the supply port 8b of the rotary joint 8 and the rotor 8a. The pipe 8c and the supply pipe 21 are connected to the supply port 8b. Accordingly, when a liquid such as high-pressure water is supplied from the supply pipe 21, the liquid is supplied from the internal pipe 8c into the hollow rotary shaft 4a, and further through the openings 4a ′ and 4a ′. It passes through the induction pipes 11a and 11b, and is configured to be able to inject and supply liquid such as water at a high pressure in the container 1 from the injection nozzles 12a and 12b in the direction along the rotation center axis S.

  As shown in FIG. 1, the supply pipe 21 is connected to a high-pressure pump 15 that sucks liquid from the liquid tank 14 at high pressure and sends it to the supply pipe 12.

  One end of the rotating shaft 4b is connected to a pulley 16 outside the bearing 7b, and the pulley 16 is connected to a driving pulley 18 of a driving motor M via a driving belt 17. The drive motor M is fixed on a support arm 19 provided on the side 10 a side of the lower frame 10 via an angle 20.

  Accordingly, by driving the drive motor M, the horizontal rotation shaft 4b is rotationally driven in the direction of arrow A via the belt 17, whereby the stirring vessel 1 is centered on the horizontal rotation shafts 4a and 4b. It is configured to be able to be rotationally driven in the direction. Therefore, when, for example, high pressure water is injected from the injection nozzles 12a and 12b while the stirring vessel 1 is rotated, the high pressure water has a virtual cylindrical shape C having the diameter of the virtual annular line R as shown in FIG. Will be sprayed in a spiral.

  Since the rotary stirring device of the present invention is configured as described above, its operation will be described next. In the embodiment of the present invention, a case of mixing and stirring fresh concrete will be described as an example.

  First, the lid 2 of the stirring vessel 1 is opened, and raw concrete material, that is, aggregate such as gravel and sand, cement, admixture, etc., is charged therein, and the lid 2 is closed and locked.

  Next, the drive motor M is driven to rotationally drive the rotary shaft 4b in the arrow A direction. As a result, the stirring vessel 1 also starts to rotate in the direction of arrow A with the rotation shafts 4a and 4b as the center of rotation.

  Further, the high pressure pump 15 is driven together with the drive motor M or at a predetermined timing to suck up water from the tank 14 and supply high pressure water to the supply pipe 21. Then, the high-pressure water is supplied from the supply pipe 21 through the internal pipe 8c and the rotor 8a into the rotating shaft 4a, and the high-pressure water enters the induction pipes 11a and 11b from the openings 4a ′ and 4a ′. Further, the pipes 11a and 11b are jetted at high pressure from the jet nozzles 12a and 12b during the rotation toward the rotation center axis S of the container 1.

  When the stirring container 1 rotates, the concrete material in the container 1 is gradually mixed. However, the container 1 has a rectangular parallelepiped shape, and the internal material is in the container 1 having a different vertical cross-sectional shape along the rotation center axis S. Stir efficiently.

  That is, when viewed along the rotation center axis S, there is no portion having the same vertical cross-sectional shape of the container 1 (see FIGS. 4 to 8), and the vertical cross-sectional shape always changes along the rotation center axis S. Therefore, the material is always agitated and mixed with different rotation timings in the entire axial direction along the rotation center axis S, thereby efficiently and uniformly agitating.

  Further, in the above stirring state, when water is jetted at a high pressure into the container 1 along the rotation center axis S from the two jet nozzles 12a and 12b separated by a predetermined distance L, the high-pressure water is converted into a nozzle 12a as shown in FIG. , 12b along the virtual cylindrical shape C having a diameter of the separation interval L (along the outer periphery of the cylindrical shape C), and is injected spirally over the entire rotation center axis S. Water can be efficiently mixed into the concrete material being stirred in.

  That is, high-pressure water is supplied to the material stirred at different rotation timings along the entire rotation center axis S in a spiral manner over the entire rotation axis (the entire range). Since the entire jet direction of the high-pressure water (in the direction of arrow B in FIG. 9) is orthogonal to the direction of rotation of the container 1 (in the direction of arrow A), the material rotating along the rotation center axis S at different timings is used. On the other hand, high-pressure water is supplied in the orthogonal direction and over the entire rotation center axis S. As a result, the entire concrete material and water can be mixed very efficiently. Thereby, the hydration reaction of cement and water can be performed efficiently, and ready-mixed concrete can be manufactured rapidly.

  Further, since the high-pressure water is supplied at a high pressure in a direction (arrow B direction) orthogonal to the rotation direction (arrow A direction) of the container 1, the stirring material is added to the high-speed water flow over the entire rotation center axis S. The high-pressure jet water flow acts as a stirring blade, thereby promoting the stirring of the material. That is, a high-speed water flow acts as a stirring blade or a stirring blade (stirring member) provided along the rotation center axis S, thereby further promoting the stirring of the material.

  When the stirring and mixing are finished and the production of ready-mixed concrete is finished, the driving motor M is stopped and the driving of the high-pressure pump 15 is stopped, and the rotation of the stirring container 1 and the injection of high-pressure water are stopped appropriately. Thereafter, the lid 3 is opened and the produced ready-mixed concrete is taken out.

  In the above embodiment, the high-pressure liquid may be ejected linearly from the ejection nozzles 12a and 12b, or the high-pressure liquid may be ejected in a fan shape from the ejection nozzles 12a and 12b. .

  FIG. 10 shows another embodiment of the present invention, in which only one coaxial guide pipe 11a is provided on the hollow rotating shaft 4a, the guide pipe 11a is extended in the direction of the container 1, and its tip is shown. Is inserted into the container 1, and an injection nozzle 12a is provided at the tip thereof. Since other configurations are the same as those in the above embodiment, the same parts as those in the above embodiment are denoted by the same reference numerals.

  In this embodiment, the high-pressure water is jetted along the rotation center axis S. In FIG. 11A, high-pressure water is ejected in a thin line along the rotation center axis S due to the shape of the injection nozzle 12 a, and the locus of the high-pressure water is substantially even during the rotation of the stirring vessel 1. A similar linear injection trajectory is obtained. Therefore, the high-pressure water jetted in a linear manner itself acts like a stirring rod, and the stirred material is effectively stirred by contacting the high-pressure water over the entire rotation center axis S. The At the same time, water can be efficiently supplied to the concrete material, and the hydration reaction of cement and water can be performed efficiently.

  In FIG. 11 (b), high pressure water is ejected in a fan shape along the rotation center axis S due to the shape of the injection nozzle 12a. It will rotate like A '. Even when the high-pressure water is jetted like this, the high-pressure water itself acts like a stirrer (stirring blade), and the material rotating and mixing inside the container 1 is the entire region of the rotation center axis S. On the other hand, it is stirred effectively by contacting the high-pressure water. At the same time, water can be supplied to the concrete material, and the hydration reaction of cement and water can be efficiently performed as in FIG.

  As described above, the present invention is capable of injecting a high-pressure liquid in the direction of the rotation center axis S from one or a plurality of injection nozzles 12a and 12b during stirring by rotating the box-shaped container 1. Can be efficiently performed, and the stirring of the material can be promoted by the liquid jetted in the direction of the rotation center axis S, and the mixing of the liquid and the material can be performed efficiently. Time can be increased.

  Further, since the injection of the high-pressure liquid is performed along the rotation center axis S of the box-shaped container 1 over substantially the entire area of the center axis S, the stirring blade is not present inside the container, The high-pressure jet liquid can act as a stirring member to promote mixing and stirring.

  Further, since the high-pressure liquid is injected at high pressure along the virtual cylindrical shape C centering on the rotation center axis S of the box-shaped container 1, the internal material uniformly contacts the high-pressure liquid to promote stirring and mixing. Can do.

  In the above-described embodiment, the stirring container 1 is shown as a rectangular parallelepiped, but is not limited to this, and includes other box-shaped containers such as a cube shape, a polyhedron whose upper surface and bottom surface are polygons other than a rectangle.

  The rotary stirrer according to the present invention is not limited to the production of ready-mixed concrete, and can be widely used as a rotary stirrer such as mixing of granular materials and the like and mixing and stirring of granular materials such as feed and liquid. Moreover, it can also be used as a dry rotary stirring device that does not use liquid.

It is a partial cross section side view of the rotary stirring apparatus which concerns on this invention. It is a top view of an apparatus same as the above. It is a perspective view of an apparatus same as the above. It is the X1-X1 sectional view taken on the line of FIG. FIG. 2 is a sectional view taken along line X2-X2 in FIG. It is the X3-X3 sectional view taken on the line of FIG. It is the X4-X4 sectional view taken on the line of FIG. It is the X5-X5 sectional view taken on the line of FIG. It is a perspective view of the injection nozzle vicinity which shows the injection state of a high pressure liquid. It is a perspective view of other embodiment of an apparatus same as the above. (A), (b) is a figure which shows the injection condition of the high pressure liquid of the injection nozzle of other embodiment same as the above.

Explanation of symbols

1 Stirring container (box-shaped container)
1a Top surface 1b Bottom surface 4a, 4b Horizontal rotation axis (rotation axis)
7a, 7b Bearing 8 Rotary joint 8a Hollow rotor 8c Internal pipe 11a, 11b Guide pipe 12a, 12b Injection nozzle (injection means)
14 Liquid tank 15 High-pressure pump 21 Supply pipe C Virtual cylinder M Drive motor (drive means)
P1 Top corner (corner)
P1 'corner P2 Lower corner (corner)
S rotation center axis R virtual annular line

Claims (2)

The vicinity of the corner of the upper surface of the box-shaped container and the vicinity of the corner of the bottom surface corresponding to the corner on the diagonal line of the corner of the upper surface are each provided with two rotation axes having a common rotation axis. A rotary stirring device that rotatably supports and rotates the box-shaped container by rotating at least one of the rotation shafts by a driving means,
At least two branch liquid supply passage than the internal one of the rotation axes of said two rotational axes provided, each branch from the liquid supply passage of said one rotation axis at least two induction pipes as leading to the container In the vicinity ,
At least two ejection means capable of ejecting liquid along the rotation center axis from the one rotation axis toward the other rotation axis at each end of the guide pipe in the container, the rotation center axis Around a certain angle ,
By supplying a high-pressure liquid to the branch liquid supply passage during the rotation of the box-shaped container , the high-pressure liquid can be injected into the container from the injection means rotating together with the container ,
The at least two injection means are provided along a virtual annular line centered on the rotation center axis,
The at least two ejecting means rotate together with the box-shaped container, thereby having the diameter of the virtual annular line and the entire region of the rotation center axis along the virtual cylinder shape centering on the rotation center axis. A rotary stirrer that injects a high-pressure liquid in a spiral manner . The rotary stirring device according to claim 1 , wherein the jetting means jets the high-pressure liquid linearly or in a fan shape along the rotation center axis .

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