JP2017051924A - Agitation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an agitation device capable of performing efficient agitation regardless of various conditions.SOLUTION: An agitation device 1 includes: an agitation region 10 agitating an agitation object 100; a rotor 20 for agitation rotating in the agitation region 10; and a baffle body 30 where at least a part is disposed in the agitation region 10. The rotor 20 for agitation has: a body 21 rotating around a rotation axis (center axis C2); a suction port 22 disposed on the surface of the body 21; a discharge port 24 disposed at an outer side position from the suction port 22 in a centrifugal direction from the rotation axis (center axis C2) on the surface of the body 21; and a flow passage 26 connecting the suction port 22 to the discharge port 24. The baffle body 30 has a baffle surface 32 directed downward and the baffle surface 32 is disposed at a position being in contact with the agitation object 100 at least during the rotation of the rotor 20 for agitation at an outer side from the discharge port 24 in the centrifugal direction from the rotation axis (center axis C2).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a stirring device for stirring and mixing, dispersing, and the like of various fluids and other fluids, and more particularly, to a technique for reducing resonance and wave formation in the region by controlling the flow in the stirring region. .

  Conventionally, for example, when two or more kinds of fluids are mixed or various powders added to the fluid are uniformly dispersed, a stirring device that rotates an impeller in the fluid has been used. The impeller is provided with, for example, propeller blades and turbine blades, and agitates by rotating a material to be stirred as a fluid by rotating. However, in general, such an impeller generates a relatively uniform flow in the axial direction or the centrifugal direction. Therefore, the impeller is not so high in stirring efficiency. There were cases where problems occurred in terms of damage resistance.

  In contrast, the inventor of the present application not only improves safety and breakage resistance by not using an impeller, but also improves the stirring efficiency by generating a complicated flow in the object to be stirred. (For example, refer to Patent Document 1).

Japanese Patent No. 4481019

  In the stirring rotator described in Patent Document 1, since the position of the discharge port that discharges the object to be stirred periodically changes with rotation, pulsation is included in the flow generated around the stirring rotator. Will be. This pulsation makes the flow generated in the object to be stirred more complicated and contributes to the improvement of the stirring force, but depending on the natural frequency of the object to be stirred and the container, the upper surface of the object to be stirred is caused by resonance. There has been a problem that large undulations (waves) may occur on the (mainly liquid level).

  This resonance is particularly likely to occur when stirring a large volume of low-viscosity fluid (for example, water). When such swell occurs, the object to be stirred leaks from the container or scatters around. In addition, unnecessary external force is applied to the drive shaft, container, and the like that drive the stirring rotating body. Therefore, in a relatively large agitator, it is necessary to improve the strength of each part in addition to measures against leakage and scattering such as sealing of the container and installation of shielding, and there is a risk of danger such as plating solution and surface treatment solution. When stirring a high liquid, since strict measures are required, the equipment cost will increase significantly.

  In addition, when the specification and the number of rotations of the stirring rotor are changed to avoid resonance, problems such as a decrease in stirring force and an increase in required power occur, so that efficient stirring cannot be performed. There was a possibility.

  In view of such circumstances, the present invention is intended to provide a stirring device capable of performing efficient stirring regardless of various conditions.

  (1) The present invention comprises a stirring area for stirring the object to be stirred, a rotating body for stirring rotating in the stirring area, and a baffle body at least partially disposed in the stirring area, The agitating rotator includes a main body that rotates about a rotation axis, a suction port provided on a surface of the main body, and a discharge provided on the surface of the main body at a position on the outer side in the centrifugal direction from the rotation shaft with respect to the suction port. An outlet and a flow passage connecting the suction port and the discharge port, and the baffle body includes a baffle surface directed downward, and the baffle surface is in a centrifugal direction from the rotation shaft more than the discharge port. An agitation device, wherein the agitation device is provided at a position on the outside so as to contact at least the agitated object during rotation of the agitation rotator.

  (2) The present invention is also characterized in that the baffle surface is provided at a position above the central axis of the discharge port, or at a position in contact with or intersecting with the central axis. The stirring device.

  (3) The present invention is also characterized in that the baffle body is configured such that a range occupied in the vertical direction of the stirring region in the stirring region is equal to or less than a range occupied in the circumferential direction of the stirring region. It is a stirring apparatus as described in 1) or (2).

  (4) The present invention is also characterized in that in the baffle body, a range of the stirring region in the circumferential direction of the stirring region is a part of the entire circumference of the stirring region. (3) The stirring device according to any one of (3).

  (5) The present invention is also characterized in that the baffle surface is provided at a position that comes into contact with only a swelled portion of the swell generated in the stirring object in the stirring region. ).

  (6) The stirrer according to any one of (1) to (5), wherein the baffle surface has a portion inclined with respect to a horizontal plane.

  (7) The present invention is also characterized in that the baffle surface has a portion inclined with respect to a horizontal plane so that the height gradually changes along the circumferential direction of the stirring region. (5) The stirring device according to any one of (5).

  (8) The present invention is also characterized in that the stirring region is formed in a shape having a corner portion on an outer peripheral portion, and the baffle body is provided in the corner portion. The stirring device according to any one of the above.

  (9) The present invention is also the stirring device according to any one of (1) to (8), further including a plurality of the baffle bodies arranged in a circumferential direction of the stirring region.

  (10) The stirrer according to any one of (1) to (9), wherein the present invention further includes a plurality of the baffle bodies arranged in the vertical direction of the stir zone.

  The stirrer according to the present invention can provide an excellent effect that efficient stirring can be performed regardless of various conditions.

It is the figure which showed an example of the stirring apparatus. (A) It is a top view of the rotary body for stirring. (B) It is a front view (the side view is also the same) of the rotating body for stirring. (A) It is a top view of a container and a baffle body. (B) It is the sectional view on the AA line of Fig.3 (a). It is the figure which showed an example of the effect | action of a stirring apparatus. It is the figure which showed an example of the effect | action of (a) and (b) stirring apparatus. (A)-(c) It is the figure which showed the other example of arrangement | positioning of a baffle body. (A)-(c) It is the figure which showed the other example of arrangement | positioning of a baffle body. (A)-(d) It is the figure which showed the other example of arrangement | positioning of the baffle body. (A)-(c) It is the figure which showed the example of the position of the up-down direction with respect to the rotating body for stirring of a baffle body. (A)-(d) It is the figure which showed the example of the other form of a baffle surface. (A)-(c) It is the figure which showed the other example of the fixing method of a baffle body.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that in the following drawings, there are parts that are omitted or simplified for easy understanding. In addition, the shape and dimensional ratio of each part in the following drawings are not necessarily accurate.

  First, the structure of the stirring apparatus 1 according to this embodiment will be described. FIG. 1 is a diagram showing an example of the stirring device 1. As shown in the figure, the stirring device 1 includes a stirring region 10 that is a region in which the object to be stirred 100 is stirred, a stirring rotator 20 disposed in the stirring region 10, and at least one in the stirring region 10. Baffle body 30 in which the portion is arranged.

  The stirring area 10 is an area for storing the object to be stirred 100, which is various fluids, at least during stirring. In the present embodiment, the agitation region 10 is formed by a bottomed cylindrical container 12, and is configured in a columnar shape having a central axis C1 in a substantially vertical direction as a central axis. Moreover, the stirring area | region 10 of this embodiment is the state by which the side part and the bottom part were partitioned off by the side wall 12a and the bottom wall 12b of the container 12, and the upper part was open | released.

  In addition, the shape of the stirring area | region 10 is not limited to a column shape, For example, other arbitrary shapes, such as a polygonal column shape and a spherical shape, are employable. Further, the stirring region 10 may be a closed or sealed region. Moreover, the stirring area | region 10 may store the to-be-stirred object 100 also except the period which is stirring. Moreover, the container 12 which forms the stirring area | region 10 may be permanently installed, for example as various tanks and tanks, for example, may be temporary things, such as a drum can, a bucket, a beaker.

  The stirring rotator 20 generates stirring force by rotating around the central axis C2 in the object to be stirred 100 accommodated in the stirring region 10. A drive device 50 such as a motor is connected to the stirring rotating body 20 via a drive shaft 40. The driving device 50 is supported by a support member 52 that is arranged so as to bridge over the upper edge 12 c of the container 12. The stirring rotator 20 is connected to the tip of the drive shaft 40 that extends downward from the drive device 50, so that the stirring rotator 20 is disposed at a predetermined height in the stirring region 10. In the present embodiment, the stirring rotator 20 and the driving device 50 are arranged such that the central axis C2 of the stirring rotator 20 substantially coincides with the central axis C1 of the stirring region 10.

  FIG. 2A is a plan view of the stirring rotator 20, and FIG. 2B is a front view of the stirring rotator 20 (the side view is the same). The main body 21 of the stirring rotating body 20 is formed in a substantially bullet-like shape, specifically, a shape in which the upper surface 21a of the cylinder is formed into a planar shape and the bottom surface 21b is formed into a spherical shape. In other words, the main body 21 is configured in a shape combining a cylinder and a hemisphere. The material which comprises the main body 21 is not specifically limited, For example, an appropriate material according to use conditions, such as a metal, ceramics, resin, rubber | gum, wood, etc., is employable.

  A plurality of suction ports 22 and a plurality of discharge ports 24 are provided on the surface of the main body 21, and a flow passage 26 formed so as to connect the suction ports 22 and the discharge ports 24 is provided inside the main body 21. Yes. A connection portion 28 to which the drive shaft 40 is connected is provided at the center of the upper surface 21 a of the main body 21. Although not shown in the drawings, the connecting portion 28 is configured so that the drive shaft 40 can be connected by a known appropriate connecting mechanism such as screwing, engagement, clamping, or the like.

  The suction port 22 is provided on a spherical bottom surface 21 b that is opposite to the connection portion 28, that is, on the tip side of the stirring rotating body 20. In the present embodiment, four substantially circular suction ports 22 are arranged at equal intervals on a circumference centered on the central axis C2. The discharge port 24 is provided at a position outside the suction port 22 in the radial direction (centrifugal direction) of the main body 21 (a position away from the central axis C2 in a direction perpendicular to the central axis C2). In the present embodiment, four substantially circular discharge ports 24 corresponding to the respective suction ports 22 are arranged on the side surface 21c.

  The flow passage 26 is formed as a tunnel-like passage that connects one suction port 22 and one discharge port 24. Accordingly, four flow passages 26 are formed inside the main body 21. In the present embodiment, each of the flow passages 26 is formed so as to bend at a right angle after going straight along the direction of the central axis C <b> 2 from the suction port 22, and to reach the discharge port 24 after going straight in the centrifugal direction of the main body 21. ing. That is, the flow passage 26 of the present embodiment includes an axial portion 26a formed in the direction of the central axis C2 and a centrifugal direction portion 26b formed in the centrifugal direction. Further, in the present embodiment, by forming the flow passage 26 in this way, the direction of the suction port 22 becomes the direction of the central axis C2, and the direction of the discharge port 24 becomes the centrifugal direction (direction perpendicular to the central axis C2). I am doing so.

  When the stirring rotator 20 is immersed in the fluid and rotated, the fluid that has entered the flow passage 26 also rotates together with the stirring rotator 20. Then, centrifugal force acts on the fluid in the flow passage 26, and the fluid in the flow passage 26 flows toward the outside in the radial direction of the stirring rotating body 20 as shown in FIGS. 2 (a) and 2 (b). To do.

  Since the discharge port 24 is provided on the radially outer side of the stirring rotator 20 with respect to the suction port 22, a stronger centrifugal force acts on the discharge port 24 than on the suction port 22. Accordingly, the fluid in the flow passage 26 flows from the suction port 22 toward the discharge port 24 as the stirring rotator 20 rotates, and the fluid in the flow passage 26 is ejected from the discharge port 24 and externally. Fluid is sucked into the flow passage 26 from the suction port 22. Thereby, in the fluid around the stirring rotator 20, a flow radially spreading from the side surface 21 c where the discharge port 24 is provided and a flow toward the tip of the stirring rotator including the suction port 22 are generated. .

  Among these, the flow that spreads radially from the side surface 21 c includes pulsation because the position of the discharge port 24 periodically changes as the stirring rotating body 20 rotates. That is, since the dynamic pressure is periodically applied from the discharge port 24 to the fluid on the outer peripheral side of the rotating body 20 for stirring at every position in the circumferential direction, a radially pulsating flow is generated. Become. Further, the flow toward the suction port 22 becomes a swirling flow following the rotation of the suction port 22.

  Further, in the vicinity of the surface of the stirring rotator 20 (that is, the upper surface 21a, the bottom surface 21b, and the side surface 21c, which are the surfaces of the main body 21), the fluid rotates together with the stirring rotator 20 due to the influence of viscosity. The fluid around the stirring rotating body 20 also flows so as to spread radially from the central axis C by the centrifugal force. Therefore, in addition to the inflow of the fluid to the suction port 22 and the outflow of the fluid from the discharge port 24, the stirring rotator 20 has a complicated flow (turbulent flow) in the surrounding fluid due to the accompanying fluid in the vicinity of the surface due to viscosity. ) And an unprecedented stirring force can be obtained.

  In the present embodiment, the main body 21 of the stirring rotator 20 is configured in a substantially shell shape, but the shape of the main body 21 is not limited to this, and for example, a spherical shape, a hemispherical shape, a cylindrical shape, or a polygonal shape. Any other shape such as a columnar shape can be employed. Further, the shapes (cross-sectional shapes) of the suction port 22 and the discharge port 24 are not limited to a substantially circular shape, and may be other shapes such as an elliptical shape and a polygonal shape. In addition, the cross-sectional shape of the flow passage 26 is not particularly limited, and can be configured in an appropriate shape according to the shape and position of the suction port 22 and the discharge port 24, the processing method, or the like.

  Further, in the present embodiment, the flow passage 26 is configured in an L shape that is bent at a substantially right angle for ease of processing, but the flow passage 26 is configured as a smoothly curved curved passage. Alternatively, the suction port 22 and the discharge port 24 may be connected linearly. In the present embodiment, the strength of the main body 21 is increased by solidly configuring the portion other than the flow passage 26 of the main body 21, but the portion other than the flow passage 26 of the main body 21 is configured to be hollow. You may make it do.

  Returning to FIG. 1, the baffle body 30 is for reducing the undulation (wave) generated on the upper surface 102 of the stirring object 100 due to the pulsating flow generated by the stirring rotating body 20. Fig.3 (a) is a top view of the container 12 and the baffle body 30, and FIG.3 (b) is the sectional view on the AA line of Fig.3 (a). As shown in these drawings, the baffle body 30 is a flat plate having a fan shape in plan view, and is disposed substantially parallel to the horizontal plane on the outer side in the centrifugal direction than the discharge port 24 of the rotating body 20 for stirring. Further, the baffle body 30 is disposed at a position where the lower surface 30 a is above the central axis C <b> 3 of the discharge port 24, and the lower surface 30 a directed downward is configured to flow upward in the object to be stirred 100. It functions as a baffle surface 32 that receives force (pressure).

  The central axis C3 of the discharge port 24 is a straight line that passes through the center of the discharge port 24 and is parallel to the direction of the discharge port 24, more specifically, the nearest straight line portion in the flow passage 26 connected to the discharge port 24. (In this embodiment, it means a straight line parallel to the direction of the centrifugal direction portion 26b).

  In the present embodiment, the baffle body 30 is fixed to the container 12 and disposed so as to protrude inward from the slightly lower side wall 12a of the upper edge 12c of the container 12. Further, in the present embodiment, the lower surface 30a is positioned slightly above the upper surface 102 of the object to be stirred 100 in a stationary state (that is, a state where the stirring rotator 20 is stopped and stirring is not performed). Thus, the baffle body 30 is arranged. That is, the baffle body 30 is configured such that the baffle surface 32 comes into contact with the object to be stirred 100 only when undulation occurs on the upper surface 102 of the object to be stirred 100 as the rotating body 20 for stirring is rotated.

  In the present embodiment, the range in which the baffle body 30 occupies the stirring region 10 in the circumferential direction is about 10% in the stirring region 10. Specifically, the circumferential dimension of the baffle body 30 is set so that the angle θ around the central axis C1 of the stirring region 10 is about 36 °. Furthermore, in this embodiment, the thickness of the baffle body 30, that is, the vertical dimension T is set to about 2% of the height (vertical dimension) H of the stirring region 10, and the protrusion amount from the side wall 12 a of the baffle body 30. P is set to about 10% of the diameter D of the stirring region 10.

  Next, the operation of the stirring device 1 will be described. 4 and FIGS. 5A and 5B are diagrams showing an example of the operation of the stirring device 1. When the stirring rotator 20 is rotated in the object to be stirred 100, a complicated circulation flow is generated in the object to be stirred 100. Specifically, as shown in FIG. 4, the flow that radially spreads in the centrifugal direction from the rotating body 20 for stirring due to the ejection from the discharge port 24, etc. is divided up and down in the vicinity of the side wall 12 a of the container 12 after spreading to some extent. One is a relatively weak swirl flow from the upper side toward the upper surface 21a, and the other is a relatively strong swirl flow from the lower side toward the bottom surface 21b due to the suction force of the suction port 22 or the like.

  This circulating flow exerts a stirring force over substantially the entire stirring area 10, so that the object to be stirred 100 can be efficiently stirred. Further, as described above, the flow that spreads radially from the stirring rotator 20 in the centrifugal direction becomes a pulsating flow, so that the circulating flow is appropriately disturbed by this pulsation, and the stirring efficiency is further improved.

  However, depending on the number of rotations of the stirring rotating body 20 and the natural frequency of the object to be stirred 100 and the container 12, resonance occurs due to the pulsating flow. FIGS. 5A and 5B show a case where resonance occurs. FIG. 5A shows a case where the baffle body 30 is not provided, and FIG. 5B shows a case where the baffle body 30 is provided. An example is shown.

  When resonance occurs, as shown in FIG. 5A, the upward flow mainly in the vicinity of the side wall 12a of the container 12 becomes strong, and a large undulation (wave) is generated on the upper surface 102 of the object to be stirred 100. . This undulation generates a plurality of raised portions 104 in the vicinity of the side wall 12a, and the possibility that the object to be stirred 100 leaks out of the container 12 increases. In addition, when the fluctuation of the upper surface 102 of the object to be stirred 100 is severe, the object to be stirred 100 is scattered around the container 12.

  According to the research of the present inventor, by providing the baffle body 30, it is possible to prevent the occurrence of such a large swell. That is, the pressure of the upward flow in the vicinity of the side wall 12a is received by the baffle surface 32, and the flow is pushed back downward, whereby the generation of the large raised portion 104 can be prevented. Further, since the pushing-back effect by the baffle surface 32 propagates to substantially the entire area on the upper side of the object to be stirred 100 together with the swirling flow generated on the upper side of the object to be stirred 100, By providing the baffle surface 32 of the area, the undulation of the upper surface 102 of the object to be stirred 100 can be reduced as a whole.

  As described above, in the stirring device 1 of the present embodiment, it is possible to effectively reduce the undulation caused by the pulsating flow peculiar to the rotating body 20 for stirring provided with the suction port 22, the discharge port 24 and the flow passage 26. It has become. For this reason, not only is it unnecessary to take measures against leakage and scattering such as sealing of the container and installation of shielding objects, but the volume of the stirring region 10 can be set smaller than the amount of the stirring target 100 to be stirred. Therefore, the equipment cost of the stirring apparatus 1 can be reduced. Moreover, since it becomes possible to reduce the external force which acts on the drive shaft 40, the container 12, etc., while reducing the installation cost of the stirring apparatus 1, design can be made easy.

  Furthermore, since existing various containers, tanks, and the like can be easily diverted to the stirrer 1, it is easy to install the stirrer 1 in various existing facilities and plants. In addition, since various conditions such as the properties and amount of the object to be stirred 100, the specification and rotation speed of the stirring rotating body 20, and the shape and size of the stirring area 10 are not limited by resonance, the stirring force decreases due to changes in various conditions. In addition, problems such as an increase in required electric power are unlikely to occur, and efficient agitation can be stably performed at a low cost.

  In addition, the range (angle θ) that the baffle body 30 occupies in the circumferential direction in the stirring region 10 and the size of the vertical dimension T and the protrusion amount P of the baffle body 30 are not particularly limited. What is necessary is just to set suitably according to the flow condition in 100, the generation | occurrence | production state of a wave | undulation, etc. Moreover, the shape of the baffle body 30 is not particularly limited, and an arbitrary shape can be adopted.

  However, in order to effectively reduce waviness while maintaining high stirring efficiency by the rotating body 20 for stirring, the shape of the baffle body 30 is at least the range occupied in the vertical direction of the stirring area 10 in the stirring area 10 It is preferable that the shape is equal to or less than the range of the stirring region 10 in the circumferential direction.

  That is, it is preferable that the baffle body 30 has a shape that does not hinder the swirling flow generated in the object to be stirred 100 while securing the area of the baffle surface 32 necessary for reducing waviness. By doing so, not only can the flow state in the object to be stirred 100 be properly maintained to prevent a reduction in stirring efficiency, but also the effect of the baffle surface 32 can be appropriately propagated in the circumferential direction. It is possible to effectively reduce the swell with only one baffle body 30.

  Therefore, in this embodiment, the baffle body 30 is configured in a flat plate shape, and the vertical dimension T is reduced so that the swirl flow generated in the object to be stirred 100 is not easily inhibited. Further, in the present embodiment, the baffle body 30 is further disposed above the upper surface 102 of the object to be stirred 100 in a stationary state so that the baffle surface 32 is in contact with only the raised portion 104 generated during stirring. The influence on the swirling flow of the body 30 is minimized.

  In the present embodiment, the angle θ and the protrusion amount P are set to be relatively small as described above, thereby facilitating operations such as charging the stirring object 100 into the stirring region 10 and cleaning the container 12. Visual confirmation of the stirring state of the object to be stirred 100 is facilitated. In other words, in the stirring device 1 of the present embodiment, it is possible to reduce the undulation caused by resonance without deteriorating workability, visibility, and the like.

  Next, the other form of the stirring apparatus 1 is demonstrated. FIGS. 6A to 6C, FIGS. 7A to 7C, and FIGS. 8A to 8D are diagrams illustrating other arrangement examples of the baffle body 30. 6A to 6C and 7A to 7C are plan views of the container 12, and FIGS. 8A to 8C are cross-sectional views of the container 12. FIG.

  As shown in FIG. 6A, a plurality of baffle bodies 30 may be arranged in the circumferential direction of the stirring region 10. In addition, as shown in FIG. 6B, the baffle body 30 may be disposed over the entire circumference of the stirring region 10. Moreover, as shown in FIG. 6C, the baffle body 30 may be provided so as to cross the stirring region 10.

  By appropriately arranging the baffle body 30 according to the properties of the object to be stirred 100, the flow state in the object to be stirred 100, etc., it becomes possible to more effectively reduce the swell. Needless to say, the number of baffle bodies 30 to be arranged is not limited. In the example shown in FIG. 6C, the baffle body 30 is provided with the through hole 34 through which the drive shaft 40 is inserted, but the baffle body 30 is traversed at a position shifted from the drive shaft 40. Also good.

  Further, when the stirring region 10 is configured to have a shape having the flat portion 10a1 and the corner portion 10a2 on the outer peripheral portion 10a, such as a polygonal column, the baffle body 30 is stirred as shown in FIG. 7 (a). It may be provided on the flat portion 10a1 of the region 10, or may be provided on the corner portion 10a2 as shown in FIG. 7B, or shown in FIG. 7C. As described above, it may be provided on both the flat portion 10a1 and the corner portion 10a2.

  When the stirring region 10 is configured to have a shape having the corner portion 10a2 on the outer peripheral portion 10a, the baffle body 30 can be disposed at a position that does not get in the way by providing the baffle body 30 in the corner portion 10a2. Further, when the baffle body 30 is provided in the corner portion 10a2, as shown in FIG. 7B, the baffle body 30 is configured to have a triangular shape or a similar shape as viewed in plan view. It can be less disturbing.

  In addition, although illustration is abbreviate | omitted, it cannot be overemphasized that the corner | angular part 10a2 may be rounded. Moreover, the shape which has a curved surface part with the corner | angular part 10a2 may be sufficient as the stirring area | region 10, In this case, you may make it arrange the baffle body 30 in a curved surface part.

  Further, as shown in FIG. 8A, the baffle body 30 is disposed at a position lower than the upper surface 102 of the stationary object 100 to be stirred, that is, in the stationary object 100 to be stirred. There may be. By adjusting the vertical position of the baffle body 30 according to the properties of the object to be stirred 100, the flow state in the object to be stirred 100, etc., the degree of resistance of the baffle body 30 against the flow in the object to be stirred 100 is appropriately set. Therefore, the swell can be reduced more effectively.

  Further, as shown in FIGS. 8B to 8D, a plurality of baffle bodies 30 may be arranged in the vertical direction. In this case, as shown in FIG. 8 (b), a plurality of baffle bodies 30 may be arranged in a substantially vertical line, as shown in FIGS. 8 (c) and (d). A plurality of baffle bodies 30 whose circumferential positions are shifted may be arranged.

  By providing a plurality of baffle bodies 30 having different positions in the vertical direction, it is possible to increase the degree of resistance of the baffle body 30 against the flow in the object to be stirred 100, so that the degree of resonance is large. It is also possible to effectively reduce the swell. Further, for example, even when the position of the upper surface 102 changes due to a change in the amount of the object to be stirred 100, it is possible to appropriately arrange a plurality of baffle bodies 30 in advance according to the change in the position of the upper surface 102. Swelling can be reduced.

  FIGS. 9A to 9C are diagrams illustrating examples of the position of the baffle body 30 in the vertical direction with respect to the stirring rotating body 20, and are cross-sectional views of the container 12. The vertical position of the baffle body 30 with respect to the stirring rotating body 20 is not particularly limited, and the baffle body 30 may be arranged at an appropriate position depending on the properties of the object to be stirred 100, the flow state in the object to be stirred 100, and the like. That's fine. However, in order to reduce waviness more effectively, the baffle body 30 is preferably provided at a position where the baffle surface 32 is disposed above the central axis C3 of the discharge port 24. More specifically, As shown in FIG. 9A, it is preferable to provide at least above the position where the central axis C3 of the discharge port 24 and the baffle surface 32 are in contact with each other. This is the same in the case where the discharge port 24 is oriented in the upper oblique direction or the lower oblique direction as shown in FIGS. 9B and 9C, but the discharge port 24 is in the upper oblique direction. In the case where the baffle body 30 is directed, it is also preferable to provide the baffle body 30 at a position where the central axis C3 of the discharge port 24 and the baffle surface 32 intersect.

  As described above, the baffle body 30 reduces the undulation of the upper surface 102 of the object to be stirred 100 by receiving the force of the upward flow after flowing out from the discharge port 24 in the object to be stirred 100 on the baffle surface 32. Therefore, by arranging the baffle body 30 in this manner, it is possible to more effectively reduce the swell. In addition, although illustration is abbreviate | omitted, it cannot be overemphasized that you may make it arrange | position the baffle body 30 both above and below the central axis C3 of the discharge outlet 24. FIG.

  10A to 10D are views showing examples of other forms of the baffle surface 32, and are cross-sectional views of the container 12. The baffle surface 32 is not limited to a plane substantially parallel to the horizontal plane as in the above-described example, and may be configured from other planes.

  For example, as shown in FIG. 10A, the baffle surface 32 may be a surface that is inclined with respect to a horizontal plane so that the height gradually changes along the circumferential direction of the stirring region 10. By inclining the baffle surface 32 in this manner, the upward flow in the object to be stirred 100 can be guided to either one of the circumferential directions, so that the swirl flow in the object to be stirred 100 is promoted or suppressed. Therefore, it is possible to reduce the swell more effectively.

  In this case, the inclination angle α of the baffle surface 32 with respect to the horizontal plane is not particularly limited, but is preferably 5 to 30 °. Although not shown, the baffle surface 32 may be inclined so as to guide the upward flow in a direction other than the circumferential direction.

  Further, the baffle surface 32 may be composed of a curved surface as shown in FIG. 10 (b) or a curved surface as shown in FIG. 10 (c). May be. Although not shown, an appropriate uneven shape may be provided on the baffle surface 32. Further, as shown in FIG. 10D, the baffle surface 32 may be configured intermittently by configuring the baffle body 30 from a plurality of round bars, for example.

  By appropriately setting the structure of the baffle surface 32 in this manner, the degree of resistance of the baffle surface 32 against the flow in the object to be stirred 100 can be adjusted, or the flow can be induced in an appropriate direction. Thus, it becomes possible to reduce the swell more effectively.

  The inclined surface, the curved surface, the curved surface, the uneven shape, and the like may be provided on the entire baffle surface 32 or may be provided partially. Further, the baffle surface 32 may be configured intermittently by configuring the baffle body 30 from a mesh-like member or by providing a through hole in the baffle body 30.

  FIGS. 11A to 11C are views showing other examples of the fixing method of the baffle body 30, and are cross-sectional views of the container 12. In the above example, the case where the baffle body 30 is fixed to the side wall 12a of the container 12 has been shown. However, the fixing method of the baffle body 30 is not limited to this, and other fixing methods may be adopted. For example, as shown in FIG. 11A, the baffle body 30 may be fixed to a support member 52 that supports the drive device 50. Further, as shown in FIG. 11 (b), an appropriate hook portion 36 is provided on the baffle body 30, and the baffle body 30 is fixed by hooking the hook portion 36 on the upper edge 12 c of the container 12. Good. Further, as shown in FIG. 11C, a plurality of baffle bodies 30 may be connected by an appropriate connecting member 38, and the connecting member 38 may be fixed to the container 12 by an appropriate hook portion 36 or the like. .

  By adopting such a fixing method, the stirring device 1 can be easily realized by utilizing the existing container 12. In addition, since the position and number of the baffle bodies 30 can be easily adjusted, the swell can be more effectively reduced. Although illustration is omitted, a support member dedicated to the baffle body 30 may be provided separately from the support member 52 for the driving device 50.

  In addition, although illustration is abbreviate | omitted, the baffle body 30 may be provided in the state which one part exposed outside the stirring area | region 10. FIG. That is, the baffle body 30 only needs to be at least partially disposed in the stirring region 10. Moreover, the baffle body 30 may be spaced apart from the outer peripheral part 10a of the stirring area | region 10 as FIG. 11 (a) and (c) show. Further, the baffle body 30 may be configured in a float shape and floated on the upper surface 102 of the object to be stirred 100. Further, a reinforcing rib or the like provided on the container 12 may also be used as the baffle body 30.

  In the above-described example, the case where the central axis C1 of the stirring region 10 and the central axis C2 of the stirring rotating body 20 are substantially aligned is shown. You may make it shift the center of. Further, the vertical position of the stirring rotator 20 in the stirring region 10 is not particularly limited, and may be arranged at an appropriate height.

  Further, the stirring rotator 20 may be provided with the suction port 22 on the drive shaft 40 side, or provided with the suction port 22 on both the front end side and the drive shaft 40 side. Also good. Further, the stirring rotator 20 may be configured to introduce an external gas into the stirring region 10. Further, a plurality of stirring rotating bodies 20 may be arranged in the stirring region 10.

  As described above, the stirring device 1 according to this embodiment includes at least a part of the stirring area 10 that stirs the object 100 to be stirred, the rotating body 20 for stirring that rotates in the stirring area 10, and the stirring area 10. The stirring rotary body 20 includes a main body 21 that rotates about a rotation axis (center axis C2), an inlet 22 provided on a surface of the main body 21, and a A baffle body 30 is provided with a discharge port 24 provided on the surface at a position on the outer side in the centrifugal direction from the rotation axis (center axis C2) than the suction port 22, and a flow passage 26 connecting the suction port 22 and the discharge port 24. A baffle surface 32 that is directed downward is provided, and the baffle surface 32 comes into contact with the object to be stirred 100 at least during rotation of the rotating body 20 for stirring on the outer side in the centrifugal direction from the rotation axis (center axis C2) than the discharge port 24. position It has been kicked.

  By adopting such a configuration, it is possible to effectively reduce the undulation generated on the upper surface 102 of the object to be stirred 100 due to resonance specific to the rotating body 20 for stirring. In addition, various kinds of conditions such as the amount, the specification of the rotating body 20 for stirring, the number of rotations, and the shape and size of the stirring area 10 are not limited, and efficient stirring can be performed.

  Further, the baffle surface 32 is provided at a position above the center axis C3 of the discharge port 24, or at a position in contact with or intersecting with the center axis C3. By doing in this way, since it becomes possible to receive reliably the force of the upward flow after flowing out of the discharge outlet 24 in the to-be-stirred object 100, a wave | undulation can be reduced more effectively.

  Further, the baffle body 30 is configured such that the range occupied in the vertical direction of the stirring region 10 in the stirring region 10 is equal to or less than the range occupied in the circumferential direction of the stirring region 10. By doing in this way, since it becomes possible to make it difficult for the swirling flow which arises in the to-be-stirred object 100 to be inhibited by the baffle body 30, it is effective, maintaining high stirring efficiency by the rotating body 20 for stirring. Therefore, the swell can be reduced.

  Further, the range of the baffle body 30 in the stirring region 10 in the circumferential direction of the stirring region 10 is a part of the entire circumference of the stirring region 10. By doing so, it becomes possible to prevent the baffle body 30 from interfering with various operations and the like, and thus the swell can be reduced without deteriorating workability and visibility during stirring. .

  Further, the baffle surface 32 is provided at a position that contacts only the swelled portion 104 of the swell generated in the object to be stirred 100 in the stirring region 10. By doing so, it is possible to make it difficult for the flow generated in the object to be stirred 100 to be hindered by the baffle body 30, so that it is effective while maintaining high stirring efficiency by the rotating body 20 for stirring. Swelling can be reduced.

  Further, the baffle surface 32 may have a portion inclined with respect to the horizontal plane. By doing in this way, since it becomes possible to guide the upward flow in the object to be stirred 100 in an appropriate direction, the swell can be reduced more effectively.

  Further, the baffle surface 32 may have a portion inclined with respect to the horizontal plane so that the height gradually changes along the circumferential direction of the stirring region 10. By doing in this way, since it becomes possible to promote or suppress the swirling flow in the to-be-stirred object 100, a wave | undulation can be reduced more effectively.

  Moreover, when the stirring area | region 10 is comprised in the shape which has the corner | angular part 10a2 in the outer peripheral part 10a, the baffle body 30 may be provided in the corner | angular part 10a2. By doing in this way, the baffle body 30 can be arrange | positioned in the position which does not get in the way, reducing a wave | undulation effectively.

  In addition, the stirring device 1 may include a plurality of baffle bodies 30 arranged in the circumferential direction of the stirring region 10. In addition, the stirring device 1 may include a plurality of baffle bodies 30 arranged in the vertical direction of the stirring region 10. By doing in this way, since it becomes possible to adjust suitably the degree of resistance of baffle body 30 to the flow in thing 100 to be stirred, waviness can be reduced more effectively.

  As mentioned above, although embodiment of this invention was described, the stirring apparatus of this invention is not limited to above-described embodiment, In the range which does not deviate from the summary of this invention, it can add various changes. Of course. In addition, the functions and effects shown in the above embodiment are merely a list of the most preferable functions and effects resulting from the present invention, and the functions and effects of the present invention are not limited to these.

  The stirring device of the present invention can be used in fields such as stirring, mixing, and dispersion of various fluids.

DESCRIPTION OF SYMBOLS 1 Stirring apparatus 10 Stirring area | region 10a Outer peripheral part 10a2 Corner | angular part 20 Rotor for stirring 21 Main body 22 Suction port 24 Outlet 26 Flow path 30 Baffle body 32 Baffle surface 100 Stirring object 104 Swelling part C2 Center axis of rotating body C3 for stirring Center axis of discharge port

Claims (10)

A stirring area for stirring the object to be stirred;
A stirring rotator rotating within the stirring region;
A baffle body at least part of which is disposed in the stirring region,
The stirring rotating body includes:
A main body that rotates about a rotation axis;
An inlet provided on the surface of the body;
A discharge port provided at a position on the outer surface of the main body in the centrifugal direction from the rotation shaft with respect to the suction port;
A flow path connecting the suction port and the discharge port,
The baffle body includes a baffle surface directed downward,
The baffle surface is provided at a position in contact with the object to be stirred at least during the rotation of the rotating body for stirring, on the outer side in the centrifugal direction from the rotation shaft than the discharge port.
Stirring device. The baffle surface is provided at a position above the central axis of the discharge port, or at a position in contact with or intersecting with the central axis.
The stirrer according to claim 1. The baffle body is configured such that a range occupied in the vertical direction of the stirring region in the stirring region is equal to or less than a range occupied in the circumferential direction of the stirring region,
The stirrer according to claim 1 or 2. The baffle body is characterized in that a range of the stirring region in the circumferential direction of the stirring region is a part of the entire circumference of the stirring region,
The stirrer according to any one of claims 1 to 3. The baffle surface is provided at a position that comes into contact only with the swelled portion of the swell generated in the object to be stirred in the stirring region,
The stirrer according to any one of claims 1 to 4. The baffle surface has a portion inclined with respect to a horizontal plane,
The stirrer according to any one of claims 1 to 5. The baffle surface has a portion inclined with respect to a horizontal plane so that the height gradually changes along the circumferential direction of the stirring region,
The stirrer according to any one of claims 1 to 5. The stirring region is configured in a shape having a corner on the outer periphery,
The baffle body is provided at the corner,
The stirrer according to any one of claims 1 to 7. It comprises a plurality of the baffle bodies arranged in the circumferential direction of the stirring region,
The stirrer according to any one of claims 1 to 8. It comprises a plurality of the baffle bodies arranged in the vertical direction of the stirring region,
The stirrer according to any one of claims 1 to 9.

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