JP5207487B2 - Rotating body for stirring and stirring device - Google Patents

Description

  The present invention relates to a rotating body for stirring and a stirring device for stirring, mixing, dispersing, and the like of liquids and other various fluids.

  Conventionally, for example, when two or more kinds of fluids are mixed or various powders added to the fluid are uniformly dispersed, a stirrer that rotates an impeller in the fluid is used. This impeller is generally provided with a propeller blade and a turbine blade, and agitation is performed by flowing a fluid by rotating.

  Such a stirrer is often used by being permanently installed in a tank containing a fluid, but in addition to this, for example, a handy type for stirring a paint etc. on the spot immediately before use is often used. It is used. This handy type agitator is generally configured by providing an impeller at the tip of a drive shaft of a hand drill type drive device. Then, the user holds the drive device in both hands, inserts the impeller at the tip into a container in which an object to be stirred such as a paint is stored, rotates it, and performs stirring.

  However, this handy type stirrer is very dangerous because an impeller having a sharp blade tip is rotated at a high speed, and there is a problem that it requires careful handling. Also, if an impeller with many protrusions hits the container, or if the impeller causes fatigue failure, the tip of the impeller or part of the container is missing or scraped and mixed into the object to be stirred. There was a problem that it was easy to do.

  Also, since the impeller causes the material to be stirred to flow by colliding with the material to be stirred, in a stirrer equipped with an impeller, when the rotating impeller is put into the material to be stirred, or in the material to be stirred, the impeller When starting to rotate, there was a problem that the impeller was easily shaken by the reaction. For this reason, when the user is not operating the stirrer, situations such as hitting the impeller against the container or scattering the object to be stirred out of the container frequently occurred.

  In addition, in the impeller, when the agitated material contains sediment, the sediment cannot be dispersed well unless stirring is performed while the impeller is in contact with the bottom wall of the container. There has been a problem that debris and scraps generated by contact with the wall surface of the container are likely to be mixed into the object to be stirred.

  Moreover, in the stirrer provided with the impeller, there is a problem that the powder particles mixed in the object to be stirred may be pulverized by collision with the impeller. For this reason, it is difficult to sufficiently stir, for example, when it is not desired to make the mixed powder particles finer, such as a metallic paint.

  On the other hand, instead of using propeller blades and turbine blades, a mixer for a high-viscosity fluid in which an impeller is configured from a hexagonal cylindrical body and a plurality of holes are provided on a side surface has been proposed (for example, , See Patent Document 1).

JP-A-5-154368

  However, in the high-viscosity fluid mixer described in Patent Document 1, the outer shape of the impeller is a hexagonal column, and the object to be stirred is made to flow mainly by causing the outer wall of the impeller to collide with the object to be stirred. The above-mentioned problem of recoil at the start of rotation and the problem of pulverization of powder particles in the object to be stirred were not solved.

  In addition, although the agitated material is allowed to flow out from the side holes, the volume inside the impeller is large relative to the side holes, so the flow rate inside the impeller is low, and the stagnant material will remain when used for a long time. There was a problem that the stirring ability was liable to deteriorate due to adhesion and deposition on the inside of the impeller.

  This invention is made | formed in view of such a situation, Comprising: It aims at providing the rotary body for stirring and stirring apparatus which can perform safe and efficient stirring irrespective of a use.

  (1) The present invention provides a main body configured such that at least a part of the outer peripheral shape of a cross section perpendicular to the rotation axis direction is a circle provided with a plurality of convex portions or concave portions, and a suction port provided on the surface of the main body. A discharge passage provided on the surface of the main body, and a flow passage connecting the suction port and the discharge port, the suction port being disposed at a position closer to the rotation shaft than the discharge port. The outlet is a rotating body for stirring, characterized in that the outlet is disposed at a position on the outer side in the centrifugal direction from the rotation shaft than the suction port.

  (2) In the present invention, the convex portion or the concave portion may have a substantially triangular outer shape in a cross section perpendicular to the rotation axis direction. It is a rotating body.

(3) The present invention is also characterized in that the outer peripheral shape of the cross section perpendicular to the rotation axis direction in at least a part of the main body is formed into a polygonal shape by the convex portion or the concave portion. Or it is the rotary body for stirring as described in (2).

(4) The present invention is also characterized in that an outer peripheral shape of a cross section perpendicular to the rotation axis direction in at least a part of the main body is constituted by a polygonal shape of a dodecagon or more by the convex portion or the concave portion. It is a rotating body for stirring as described in said (3).

(5) The present invention is also the stirring rotator according to any one of the above (1) to (4), characterized in that the corners on the top of the convex portions are rounded.

  (6) In the present invention, the convex portion or the concave portion is configured to have a substantially circular arc outer shape in a cross section perpendicular to the rotation axis direction. It is a rotating body.

(7) The present invention is also characterized in that a ratio of a cross-sectional area perpendicular to the flow of the suction port and a cross-sectional area perpendicular to the flow of the discharge port is set to 1/3 to 3. a stirring rotational body according to any one of the above (1) to (6).

  (8) In the present invention, any one of the above (1) to (7), wherein the main body is configured to have a shape in which the thickness in the rotation axis direction gradually decreases toward the outer side in the centrifugal direction. The rotating body for stirring described in 1.

  (9) The present invention is also characterized in that a plurality of the discharge ports are provided, and the suction port and the flow passage are individually provided for each of the plurality of discharge ports. The rotating body for stirring according to any one of the above.

  (10) In the present invention, any one of the above (1) to (9), wherein the suction port is provided on a side opposite to a drive shaft connected to the main body for rotating the main body. It is a rotating body for stirring according to the above.

  (11) The stirring rotor according to any one of (1) to (10), wherein the suction port is provided on an outer side in a centrifugal direction of the rotation shaft.

  (12) The present invention may further include an intake port provided at a position closer to the rotation shaft than the discharge port on the surface of the main body, and an air passage connecting the intake port and the discharge port. The above (1) is characterized in that the external gas can be sucked from the intake port and introduced into the stirred object by using the mouth in contact with the gas outside the stirred object. The rotating body for stirring according to any one of (1) to (11).

  (13) The present invention is also a stirring device comprising a plurality of the stirring rotators according to any one of the above (1) to (12) arranged in the direction of the rotation axis. .

  According to the present invention, it is possible to achieve an excellent effect that it is possible to perform safe and efficient stirring regardless of use.

(A) It is a top view of the rotary body for stirring. (B) It is a front view (side view) of the rotating body for stirring. (C) It is a bottom view of the rotating body for stirring. (A) It is the top view which showed the action | operation of the rotary body for stirring. (B) It is sectional drawing which showed the action | operation of the rotary body for stirring. It is the schematic which showed the usage example of the rotating body for stirring (a) and (b). (A)-(c) It is the figure which showed the example of the other form of a suction inlet, a discharge outlet, and a flow path. (A)-(c) It is the figure which showed the example of the other form of a suction inlet, a discharge outlet, and a flow path. (A)-(c) It is the figure which showed the example of the other form of a suction inlet, a discharge outlet, and a flow path. (A) It is the figure which showed the outer periphery shape of the cross section perpendicular | vertical to the central axis of the main body of the rotary body for stirring. (B) It is the A section enlarged view of the same figure (a). (A)-(d) It is the figure which showed the example of the other shape of a convex part. (A)-(d) It is the figure which showed the example of the shape of a recessed part. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. (A)-(c) It is the figure which showed the example of the other shape of the main body of the rotary body for stirring. It is the front view which showed the example of the (a) and (b) stirring apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

First, the structure of the stirring rotating body 1 according to the embodiment of the present invention will be described. FIG. 1A is a plan view of the stirring rotator 1, FIG. 1B is a front view of the stirring rotator 1 (the same side view), and FIG. It is a bottom view of the rotary body 1 for use. As shown in these drawings, stirring rotary member 1 includes a columnar body 10, a plurality of suction ports 12 provided on the surface of the body 10 (the bottom surface 10 b), the surface of the body 10 (the side surface 10 c ) and a plurality of discharge ports 14, and a flow passage 16 formed inside the main body 10 so as to connect the suction port 12 and the discharge port 14.

  The main body 10 is formed in a dodecagonal prism shape by providing twelve convex portions 10d on the outer peripheral surface (side surface 10c) of the cylinder (details will be described later). At the center of the upper surface 10a of the main body 10, a connecting portion 18 to which a driving shaft 20 of a driving device such as a motor is connected is provided. Therefore, the stirring rotating body 1 is configured to rotate about the central axis C of the main body 10 as a rotation axis. In addition, the connection method of the drive shaft 20 and the connection part 18 may be any known method such as a screw or engagement.

  In this embodiment, the strength of the main body 10 is increased by configuring the main body 10 other than the flow passage 16 to be solid. The material which comprises the main body 10 is not specifically limited, For example, a suitable material according to use conditions, such as a metal, ceramics, resin, rubber | gum, wood, etc., is employable. Since the main body 10 of the present embodiment is simple and easy to process, the main body 10 can be configured from a wide variety of materials without being limited by the manufacturing method.

  Further, since the main body 10 is configured in such a simple shape, the occurrence of unbalance with respect to the rotating shaft can be reduced. For this reason, in the present embodiment, unlike an impeller or the like that tends to cause unbalance, it is possible to substantially eliminate vibrations and whirling during rotation.

  The suction port 12 is provided on the bottom surface 10 b (the surface on the opposite side of the connection portion 18) of the main body 10. In the present embodiment, the four suction ports 12 are arranged at equal intervals on a circumference centered on the central axis C, and are formed in the same direction as the central axis C. The discharge port 14 is provided on the side surface 10 c of the main body 10. In other words, in the present embodiment, the four discharge ports 14 are respectively arranged at positions (distant from the central axis C) that are further in the centrifugal direction from the central axis C of the main body 10 than the suction ports 12. Further, the discharge port 14 is formed in a direction orthogonal to the central axis C.

  The flow passage 16 is formed as a passage connecting one suction port 12 and one discharge port 14. Accordingly, four flow passages are formed in the main body 10. Each flow passage 16 is formed so as to be straight from the suction port 12 along the direction of the central axis C, then bend at a right angle, and straight forward in the centrifugal direction of the main body 10 to reach the discharge port 14.

  In the present embodiment, the flow passage 16 is configured in this manner, so that the suction port 12, the discharge port 14, and the flow passage 16 can be easily formed by drilling with a drill. Specifically, the suction port 12, the discharge port 14, and the flow passage 16 can be easily formed by drilling a hole from the position of the suction port 12 in the direction of the central axis C and drilling a hole from the position of the discharge port 14 toward the central axis C. Can be formed. In addition, in this embodiment, although the cross-sectional shape of the flow path 16 is comprised circularly, it is not limited to this, For example, it is good also as other cross-sectional shapes, such as an ellipse and a polygon.

  Next, the operation of the stirring rotating body 1 will be described. FIG. 2A is a plan view showing the operation of the stirring rotator 1, and FIG. 2B is a cross-sectional view showing the operation of the stirring rotator 1. The stirring rotating body 1 is driven by the drive shaft 20 and rotates about the central axis C in the object to be stirred that is a fluid, thereby stirring the object to be stirred.

  When the stirring rotator 1 is immersed in the fluid and rotated, the fluid that has entered the flow passage 16 also rotates together with the stirring rotator 1. Then, centrifugal force acts on the fluid in the flow passage 16, and as shown in these drawings, the fluid in the flow passage 16 flows in the centrifugal direction of the stirring rotor 1. Since the discharge port 14 is provided on the outer side in the centrifugal direction of the main body 10 than the suction port 12, a centrifugal force stronger than that of the suction port 12 acts on the discharge port 14. Accordingly, the fluid flows from the suction port 12 toward the discharge port 14 as long as the stirring rotator 1 rotates. That is, the fluid in the flow passage 16 is ejected from the discharge port 14, and the external fluid is sucked into the flow passage 16 from the suction port 12. As a result, in the fluid around the stirring rotator 1, a flow that radiates from the side surface 10 c with the discharge port 14 and a flow toward the bottom surface 10 b with the suction port 12 occur.

  Further, when the stirring rotator 1 is immersed in the fluid and rotated, vortex or turbulence is generated in the fluid around the stirring rotator 1 by the plurality of convex portions 10d provided on the side surface 10c. This vortex or turbulent flow is combined with the flow from the discharge port 14 as the stirring rotator 1 rotates, and a more complicated flow (turbulent flow) is generated in the fluid around the stirring rotator 1. Become.

  As described above, in this embodiment, the fluid around the agitating rotating body 1 is obtained by the synergistic effect of the inflow of the fluid to the suction port 12, the outflow of the fluid from the discharge port 14, and the vortex or turbulence by the convex portion 10d. This makes it possible to generate a complicated flow (turbulent flow) and to obtain an unprecedented stirring ability.

  In this embodiment, the main body 10 is configured in a dodecagonal columnar shape by providing twelve convex portions 10d, that is, the outer peripheral shape of a cross section perpendicular to the central axis (rotation axis) C of the main body 10 is configured in a dodecagonal shape. However, the present invention is not limited to this, and the main body 10 may be configured in other polygonal column shapes according to the viscosity or properties of the object to be stirred. However, when the main body 10 is formed in a polygonal column shape, the main body 10 may be 12 or more prisms from the viewpoint of avoiding collision of the main body 10 with the surrounding fluid (stirred object) as much as possible and not providing sharp projections. Desirably, it is more desirable if it is 16 or more prisms, and it is especially desirable that it is 18 or more prisms.

  In the present embodiment, the cross-sectional area of the suction port 12 (cross-sectional area perpendicular to the flow passing through the suction port 12) and the cross-sectional area of the discharge port 14 (cross-sectional area perpendicular to the flow passing through the discharge port 14) are approximately. Although it is the same, it is not limited to this, You may make it make these cross-sectional areas differ according to the use etc. of the rotary body 1 for stirring. However, in order to cause the fluid to flow smoothly without staying in the flow passage 16 and to obtain an effective stirring ability, the cross-sectional area of the suction port 12 (cross-sectional area perpendicular to the flow passing through the suction port 12) and The ratio of the cross-sectional area of the discharge port 14 (cross-sectional area perpendicular to the flow passing through the discharge port 14) is preferably 1/3 to 3, more preferably 1/2 to 2, 5/6. It is especially desirable that it is -1.2.

  FIGS. 3A and 3B are schematic views showing an example of use of the stirring rotator 1. As shown in these figures, the stirring rotator 1 is connected to the drive shaft 20 of a drive device 30 such as a motor, and is immersed in an object to be stirred 50 that is a fluid contained in a container 40. Used in. The driving device 30 may be fixed to the container 40, a pedestal, or the like, or may be held and operated by a user.

By rotating the stirring rotator 1 by the driving device 30, the flow spreading radially from the side surface 10 c of the stirring rotator 1 as described above, and the tip of the stirring rotator 1 (the bottom surface on the opposite side of the drive shaft 20). A flow toward 10b) occurs. Further, a vortex or turbulent flow is generated in the vicinity of the side surface 10c of the stirring rotating body 1. As a result, as shown in FIGS. 3A and 3B, a complicated circulation flow is generated in the stirring object 50, and the stirring object 50 is sufficiently stirred by this circulation flow. In addition, when the staying matter staying at the bottom of the container 40 is dispersed, the tip of the stirring rotating body 1 may be brought close to the bottom of the container 40 . By doing so, the staying material can be sucked up from the suction port 12 and ejected from the discharge port 14, and the staying material can be sufficiently dispersed in the stirring object 50.

  In this embodiment, since the main body 10 is configured in a dodecagonal prism shape, collision with the stirring object 50 at the time of rotation is reduced, so that the reaction at the start of rotation hardly occurs. In addition, unlike the impeller and the like, the main body 10 is not provided with a sharp protrusion, and therefore the stirring rotator 1 or the container 40 is damaged even when the stirring rotator 1 is hit against the wall surface of the container 40. The possibility of scraping or scraping is low. For this reason, the rotating body 1 for stirring can be brought close to the wall surface of the container 40 with peace of mind, and it is possible to sufficiently stir all the corners of the container 40. It is difficult for scrap and the like to be mixed into the object to be stirred 50.

  Next, other forms of the stirring rotor 1 will be described. 4 to 6 are diagrams showing examples of other forms of the suction port 12, the discharge port 14, and the flow passage 16.

  FIG. 4A is a front view showing an example in which the flow passage 16 is configured as a smoothly curved passage. By configuring the flow passage 16 in this way, the flow resistance in the flow passage 16 can be reduced, so that the flow caused by the stirring rotor 1 can be further strengthened and the stirring ability can be improved. In addition, such a flow path 16 can be formed by manufacturing the main body 10 by casting, for example.

  FIG. 4B is a front view showing an example in which the flow passage 16 is configured in a straight line. Even when the flow passage 16 is configured in this manner, the flow resistance in the flow passage 16 can be reduced. Furthermore, in this case, it is possible to facilitate cleaning of the flow passage 16.

  FIG. 4C is a front view showing an example in which one suction port 12 is provided for a plurality of discharge ports 14 and the flow passage 16 is branched from one suction port 12 to a plurality of discharge ports 14. FIG. In this way, a common suction port 12 may be provided for the plurality of discharge ports 14. Also in this case, in order to smoothly flow the fluid (stirred object) without staying in the flow passage 16 and to obtain an effective stirring ability, the cross-sectional area of the suction port 12 (passes through the suction port 12). The ratio of the sum of the cross-sectional area perpendicular to the flow) and the cross-sectional area of the discharge port 14 (cross-sectional area perpendicular to the flow passing through the discharge port 14) is preferably 1/3 to 3, 2 is more desirable, and 5/6 to 1.2 is particularly desirable.

  FIG. 5A shows an example in which the discharge port 14 is arranged so as to be shifted in the rotation direction, and the portion of the flow passage 16 connected to the discharge port 14 is angled with respect to the centrifugal direction of the stirring rotating body 1. It is the shown top view. In this way, by changing the direction of the discharge port 14, for example, when the stirring rotator 1 is rotated counterclockwise (in the direction of the arrow L) in the figure, the jet flow from the discharge port 14 is smoothly made. can do. Further, when the stirring rotator 1 is rotated clockwise (in the direction of the arrow R) in the figure, the jet flow from the discharge port 14 can be in a turbulent state. In other words, in the present embodiment, by appropriately setting the arrangement and direction of the flow passage 16 and the discharge port 14 according to the application, it is possible to obtain a flow most suitable for efficient stirring. .

  In FIG. 5B, the discharge port 14 is arranged so as to be shifted in the direction of the rotation axis so that the portion of the flow passage 16 connected to the discharge port 14 faces the front end side of the stirring rotary member 1 (the opposite side of the drive shaft 20). It is the front view which showed the example comprised in. In this way, since the discharge port 14 is directed to the tip side, the flow in the liquid surface direction can be weakened, so that foaming due to strong flow or turbulent flow near the liquid surface or mixing of bubbles is reduced. be able to.

  FIG. 5C is a front view showing an example in which the discharge port 14 is arranged so as to be shifted in the direction of the rotation axis, and the portion connected to the discharge port 14 of the flow passage 16 is directed to the drive shaft side. By doing in this way, the whole to-be-stirred object can fully be stirred also when rotating the rotating body 1 for stirring in the position deep from a liquid level. In addition, by generating a flow toward the liquid surface, an external gas can be included in the object to be stirred.

  FIG. 6A is a front view showing an example in which the suction port 12 is provided on the drive shaft side. This figure shows an example in which four suction ports 12 are provided on the upper surface 10a on the drive shaft side. As described above, the suction ports 12 may have all the suction ports 12 provided on the drive shaft side. Depending on the application, a part of the plurality of suction ports 12 may be disposed on the distal end side, and the remaining one. The part may be arranged on the drive shaft side.

  By appropriately setting the arrangement of the suction port 12, it is possible to generate an optimal flow according to the application. Further, if the suction port 12 on the drive shaft side is brought close to the liquid surface of the fluid to suck the gas outside the fluid, the outside gas can be actively taken into the fluid. Thereby, gas can be dissolved in the fluid, or bubbles can be mixed in the fluid.

  FIG. 6B is a front view showing an example in which the agitation rotator 1 is provided with an intake port 13 for sucking a gas outside the fluid, and an air passage 17 connecting the intake port 13 and the discharge port 14. . The figure shows an example in which two intake ports 13 are provided on the upper surface 10a on the drive shaft side of the main body 10 and an air passage 13 that connects the intake port 13 and the discharge port 14 via the flow passage 16 is formed inside the main body 10. Show. Thus, by providing the intake port 13 and the air passage 17 in the main body 10 and rotating the stirring rotator 1 with the intake port 13 exposed to the outside of the fluid or in contact with the gas outside the fluid, Gas can be dissolved in the fluid, or bubbles can be mixed in the fluid.

  In this case, by disposing the intake port 13 radially inward (rotating shaft side) with respect to the intake port 12, the outflow of fluid from the intake port 13 is prevented, and gas is efficiently taken into the fluid. It becomes possible. Instead of connecting the vent path 17 to the discharge port 14 for ejecting fluid, a dedicated discharge port for ejecting gas into the fluid is provided separately, and the vent path 17 is connected to this dedicated discharge port. Good.

  FIG. 6C shows an example in which, when one suction port 12 is provided, the common part 16a of the flow passage 16 is provided with an enlarged portion 19 for capturing foreign matter having an enlarged inner diameter. When the number of the suction ports 12 is one, the fluid passing through the common portion 16 a of the flow passage 16 becomes a swirling flow by the rotation of the stirring rotating body 1. Therefore, by providing the enlarged portion 19 on the inner peripheral wall of the common portion 16a of the flow passage 16, foreign matters such as dust in the fluid can be captured in the enlarged portion 19 by the same principle as the centrifugal separation. That is, the stirring rotating body 1 can simultaneously perform stirring and removal of foreign matters. You may make it provide the trap for hold | maintaining the captured foreign material reliably in the expansion part 19. FIG.

  Although illustration is omitted, a filter for capturing foreign matter may be provided in the middle of the flow passage 16 instead of providing the enlarged portion 19. In this case, the foreign matter can be easily removed. What is necessary is just to comprise this filter from the material according to a use, such as a wire mesh and sponge, for example.

  FIG. 7A is a view showing the outer peripheral shape of a cross section perpendicular to the central axis C of the main body 10 of the stirring rotating body 1, and FIG. 7B is an enlarged view of a portion A of FIG. It is. As described above, in the present embodiment, the main body 10 is configured in a polygonal column shape (decagonal column shape), that is, the outer peripheral shape of the cross section perpendicular to the central axis (rotation axis) C of the main body 10 is configured in a polygonal shape. Specifically, the outer peripheral shape of the cross section perpendicular to the central axis (rotation axis) C of the main body 10 is such that the virtual circle 100 has an outer shape in a cross section perpendicular to the central axis C, as shown in FIG. It has a shape provided with a plurality of convex portions 10d configured in a substantially triangular shape. And as shown in the figure (b), the center axis | shaft (rotation) of the main body 10 is set by setting the shape of the convex part 10d so that the edge | sides 10d1 of the adjacent convex part 10d may mutually be in a straight line. The outer peripheral shape of the cross section perpendicular to the axis (C) is a polygonal shape (convex polygonal shape).

  In the present embodiment, by providing the plurality of convex portions 10d in this manner, an appropriate vortex or turbulent flow is generated around the stirring rotating body 1 to increase the stirring ability. The shape is not limited to the above shape, and may be other shapes.

  8A to 8D are diagrams showing examples of other shapes of the convex portion 10d. For example, the outer shape of the cross section perpendicular to the central axis C of the convex portion 10d is, as shown in FIG. 5A, the outer peripheral shape of the cross section perpendicular to the central axis (rotation axis) C of the main body 10 is a concave polygon shape The outer peripheral shape of the cross section perpendicular to the central axis (rotation axis) C of the main body 10 is a circle having a plurality of triangular projections as shown in FIG. It may be a shape that is provided.

  Further, the outer shape in the cross section perpendicular to the central axis C of the convex portion 10d may be a shape other than a substantially triangular shape. For example, the outer shape of the cross section perpendicular to the central axis C of the convex portion 10d may be a substantially arc shape as shown in FIG. 5C or FIG. Other polygons, or any other shape configured by combining curves or straight lines may be used.

  That is, the shape of the convex portion 10d can be set to an appropriate shape according to the application, use conditions, and the like of the rotating body for stirring. Further, it goes without saying that the number and arrangement of the convex portions 10d can be set as appropriate according to the use and use conditions.

  Moreover, you may make it provide the recessed part 10e instead of providing the convex part 10d in the main body 10. FIG. That is, the outer peripheral shape of a cross section perpendicular to the central axis (rotation axis) C of the main body 10 may be configured to have a shape in which a plurality of recesses 10e are provided in the virtual circle 100. Also in this case, the same effect as the case where the convex portion 10d is provided can be obtained.

  FIGS. 9A to 9D are diagrams showing examples of the shape of the recess 10e. For example, the outer shape of the cross section perpendicular to the central axis C of the recess 10e may be a substantially triangular shape as shown in (a) or (b) of FIG. 10, or (c) or (d) of FIG. As shown in (), it may be substantially arcuate. Although illustration is omitted, any other shape may be used. Further, when the recess 10e is provided in this way, a plurality of recesses 10e may be disposed adjacent to each other as shown in FIG. May be.

  Thus, by making the outer peripheral shape of the cross section perpendicular to the central axis (rotation axis) C of the main body 10 into a shape in which a plurality of convex portions 10d or concave portions 10e are provided on the virtual circle 100, the stirring rotor 1 A moderate vortex or turbulent flow can be generated in the surroundings to increase the stirring ability.

  10 to 19 are diagrams showing examples of other shapes of the main body 10 of the stirring rotating body 1. The shape of the main body 10 may be any shape as long as the outer peripheral shape of the cross section perpendicular to the direction of the rotation axis C is at least partially a shape in which a plurality of convex portions 10d or concave portions 10e are provided in a circle. . Hereinafter, although the typical example of the shape of the main body 10 is given, it cannot be overemphasized that the shape of the main body 10 is not limited to these examples.

  First, FIGS. 10A to 10C are diagrams illustrating an example in which the main body 10 is configured in a dodecagonal shape and the top corner of the convex portion 10d is rounded. 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. Thus, the safety | security of the rotary body 1 for stirring can be improved by providing roundness in the corner | angular part of the top of the convex part 10d. Further, when the rotating rotating body 1 for stirring is brought into contact with a container or the like, the possibility that fragments or scraps are generated and mixed into the object to be stirred can be further reduced.

  FIGS. 11A to 11C are diagrams showing an example in which the outer peripheral shape of the cross section perpendicular to the central axis (rotating axis) C of the main body 10 is formed into a concave polygonal shape (decagonal shape). 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. Depending on properties such as the viscosity of the fluid to be stirred, the main body 10 can be efficiently stirred by configuring the main body 10 in a polygonal column shape with the top surface 10a and the bottom surface 10b being concave polygons. There is.

  12A to 12C show that the outer shape of the cross section perpendicular to the central axis (rotation axis) C of the convex portion 10d is formed in a substantially arc shape, and twelve convex portions 10d on the side surface 10c of the main body 10. It is the figure which showed the example which provided. 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. Depending on the properties such as the viscosity of the fluid that is to be stirred, it may be possible to perform efficient stirring by configuring the main body 10 in such a shape. Further, in this case, since the convex portion 10d has a rounded shape, when the rotating stirring rotating body 1 is brought into contact with a container or the like, fragments and shavings are generated and the object to be stirred The possibility of being mixed in can be further reduced.

  13A to 13C show that the outer shape of the cross section perpendicular to the central axis (rotation axis) C of the convex portion 10d is formed into a substantially trapezoidal shape, and that the twelve convex portions 10d are formed on the side surface 10c of the main body 10. It is the figure which showed the example which provided. 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. Depending on the properties such as the viscosity of the fluid that is to be stirred, it may be possible to perform efficient stirring by configuring the main body 10 in such a shape. The convex portion 10d may be formed in a spiral shape instead of being formed in parallel with the central axis C.

  Moreover, the convex part 10d does not need to be provided over the full length of the main body 10 in the direction of the central axis C, and may be provided partially as shown in FIG. That is, you may make it provide the convex part 10d only in the part which wants to generate a vortex or a turbulent flow. Further, if necessary, the convex portions 10d may be provided on the top surface 10a and the bottom surface 10b.

  14A to 14C, the outer shape of the cross section perpendicular to the central axis (rotation axis) C of the convex portion 10d is formed into a substantially trapezoidal shape, and a plurality of convex portions 10d are formed on the side surface 10c of the main body 10. It is the figure which showed the example provided by arranging in zigzag form. 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. Depending on the properties such as the viscosity of the fluid that is to be stirred, it may be possible to perform efficient stirring by configuring the main body 10 in such a shape.

  In this example, the top surface of the convex portion 10d has a rectangular shape as shown in FIG. 5B, but the top surface may have other shapes, such as a circle or an ellipse. . Moreover, you may make it comprise the shape of the whole convex part 10d in various shapes, such as a pyramid shape, a cone shape, or a hemisphere, for example. Moreover, you may make it arrange | position the convex part 10d in a matrix form instead of a zigzag form.

  15A to 15C, the outer shape of the cross section perpendicular to the central axis (rotation axis) C of the recess 10e is formed in a substantially arc shape, and twelve recesses 10e are provided on the side surface 10c of the main body 10. It is the figure which showed the example. 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. Depending on the properties such as the viscosity of the fluid that is to be stirred, it may be possible to perform efficient stirring by configuring the main body 10 in such a shape. The recess 10e may be formed in a spiral shape.

  Similarly to the convex portion 10d, the concave portion 10e does not need to be provided over the entire length of the main body 10 in the direction of the central axis C, and may be provided partially. Further, if necessary, a recess 10e may be provided on the top surface 10a and the bottom surface 10b.

  16A to 16C show an example in which a plurality of substantially hemispherical concave portions 10e are arranged in a matrix on the side surface 10c of the main body 10, and the upper surface 10a and the bottom surface 10b are recessed in a substantially hemispherical shape. FIG. 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. Depending on the properties such as the viscosity of the fluid that is to be stirred, it may be possible to perform efficient stirring by configuring the main body 10 in such a shape.

  The overall shape of the concave portion 10e may be various other shapes such as a pyramid shape and a conical shape in addition to the hemispherical shape. Moreover, you may make it arrange | position the recessed part 10e not in a matrix form but in a zigzag form.

  Further, the top surface 10a and the bottom surface 10b may be recessed in a shape other than a hemisphere, or only one of the top surface 10a and the bottom surface 10b may be recessed. Further, the upper surface 10a and the bottom surface 10b may be bulged rather than recessed. Further, a convex portion 10d or a concave portion 10e may be further provided on the top surface 10a or the bottom surface 10b that is recessed or bulged.

  Needless to say, even when the main body 10 is configured in other shapes, the top surface 10a (the drive shaft side portion) or the bottom surface 10b (the tip side portion) may be recessed or bulged.

  FIGS. 17A to 17C are diagrams showing an example in which the main body 10 is formed in a substantially spherical shape by configuring the side surface 10c from a curved surface. 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. The main body 10 of this example is configured to have a polygonal shape in plan view (FIG. 5A) and a substantially spherical shape in front view (side view) (FIG. 5B). .

  Thus, by making the shape of the main body 10 such that the thickness in the direction of the central axis (rotation axis) C gradually decreases outward in the centrifugal direction, the flow in the vicinity of the side surface 10c of the rotating body for stirring 1 Thus, it is possible to smoothly join the flow caused by the jet from 14. As a result, the flow that spreads radially from the rotating body 1 for stirring can be strengthened and the stirring ability can be enhanced.

  The main body 10 may be configured in a shape such that the shape in front view (side view) is approximately elliptical, approximately rhomboid, approximately hemispherical, approximately triangular, or approximately trapezoidal. Moreover, you may make it comprise the main body 10 from the polyhedron close | similar to a sphere, such as a regular polyhedron and a semi-regular polyhedron, for example. Moreover, you may make it comprise the main body 10 from the shape which provided the some recessed part 10e (or convex part 10d) in the spherical body (or ellipsoid) like the golf ball, for example.

  FIGS. 18A to 18C are diagrams illustrating an example in which the main body 10 is configured in a shape combining a cylinder and a polygonal frustum. 1A is a plan view, FIG. 1B is a front view (side view), and FIG. 1C is a bottom view. Thus, the main body 10 may be configured by combining solid shapes having different shapes.

  In this example, the main body 10 is configured by stacking a cylinder and a truncated pyramid so that the thickness of the main body 10 in the central axis (rotating axis) C direction gradually decreases toward the outer side in the centrifugal direction. Thereby, the flow in the vicinity of the side surface 10c1 of the truncated pyramid portion can be smoothly merged with the flow caused by the ejection from the discharge port 14. Further, in this example, the side surface 10c2 of the cylindrical portion is positioned on the outer side in the centrifugal direction than the side surface 10c1 of the 12-sided truncated pyramid portion. That is, the outermost shape in the direction perpendicular to the central axis C of the main body 10 is circular, so that the convex portion 10d does not protrude outward in the centrifugal direction. By doing in this way, while improving the safety | security of the rotating body 1 for stirring, generation | occurrence | production of the fragment | piece and scraps when contacting a container etc. can be prevented.

  The polygonal frustum portion may be provided on the drive shaft side, the columnar portion may be provided on the opposite side of the drive shaft, or the polygonal frustum portions may be provided on both sides of the cylinder portion. Cylindrical portions may be provided on both sides of the truncated pyramid portion. Further, the main body 10 is not limited to the combination of the cylinder and the polygonal frustum shown in FIG. 18, but is a cylinder, a cone, a truncated cone, a polygonal column, a polygonal pyramid, a polygonal frustum, a sphere, a hemisphere, a regular polyhedron, and a semiregular polyhedron. It may be configured by combining various solids such as.

  FIGS. 19A to 19C are views showing an example in which the main body 10 is divided into two, and the gap between the two divided portions is a part of the flow passage 16. In this example, the main body 10 includes a drive shaft side portion 10f to which the drive shaft 20 is connected and a tip side portion 10g in which the suction port 12 is provided, and the drive shaft side portion 10f and the tip are formed by four connection members 10h. The side part 10g is connected. The flow passage 16 is formed so as to connect the gaps between the suction port 12, the drive shaft side portion 10f, and the tip side portion 10g inside the tip side portion 10g, whereby the drive shaft side portion 10f and the tip side portion 10g are connected to each other. The gap constitutes a part of the flow passage 16, and the outer peripheral portion of the gap between the drive shaft side portion 10 f and the tip side portion 10 g constitutes the discharge port 14. In other words, in this example, the discharge port 14 is provided over the entire circumferential direction of the side surface 10 c of the main body 10.

  By doing in this way, depending on properties, such as the viscosity of the fluid which is to be stirred, efficient stirring may be performed. The drive shaft side portion 10f and the tip side portion 10g of the main body 10 may have different shapes such as a cylinder and a polygonal column.

  In addition to the setting of the shape of the main body 10 as described above, the flow around the rotating body 1 for stirring is more precisely controlled by appropriately setting the roughness of the surface of the main body 10 and finer uneven shapes. You may do it. In addition, various colors may be applied to the surface of the main body 10 to improve the design.

  Next, a stirring device 2 configured by connecting a plurality of stirring rotors 1 will be described. FIGS. 20A and 20B are front views showing an example of the stirring device 2. The figure (a) has shown the example which connected the rotating body 1 for three stirring via the drive shaft, and the figure (b) has shown the example which connected the rotating body 1 for two stirring integrally. Show. As described above, the stirring ability can be further improved by connecting the plurality of stirring rotating bodies 1 in the direction of the rotation axis. In particular, it is effective when the depth of the fluid to be stirred is deep. Further, in the example shown in FIG. 5B, if the gas outside the fluid is sucked from the suction port 12 on the drive shaft side, the gas can be taken into the fluid more efficiently.

  As described above, the stirring rotator 1 according to the present embodiment has at least a portion of the outer peripheral shape of the cross section perpendicular to the direction of the rotation axis (center axis C) as a circle (virtual circle 100). The main body 10 configured in a shape provided with the recess 10e, the suction port 12 provided on the surface of the main body 10, the discharge port 14 provided on the surface of the main body 10, and the flow passage 16 connecting the suction port 12 and the discharge port 14 The suction port 12 is disposed at a position closer to the rotation axis than the discharge port 14, and the discharge port 14 is disposed at a position on the outer side in the centrifugal direction from the rotation shaft than the suction port 12.

  For this reason, the rotating body 1 for stirring which has a high stirring ability can be manufactured at a much lower cost than an impeller or the like. In particular, the vortex or turbulent flow generated by the convex portion 10d or the concave portion 10e acts synergistically on the inflow of the agitated material to the suction port 12 and the outflow of the agitated material from the discharge port 14, so Since it is possible to generate a complicated flow (turbulent flow) in the fluid around 1, it is possible to obtain an unprecedented high stirring ability.

  Further, compared to an impeller, it is possible to reduce the reaction at the start of rotation and the occurrence of unbalance with respect to the rotation shaft. Further, the agitating rotating body 1 is hit against a container or the like containing an object to be agitated. Also in this case, it is possible to make it difficult to cause breakage, scraping, or the like of the stirring rotor 1 or the container. For this reason, safe and efficient stirring can be performed regardless of the application.

  Further, the convex portion 10d or the concave portion 10e has a substantially triangular outer shape in a cross section perpendicular to the rotation axis direction. For this reason, it is possible to generate an effective vortex or turbulent flow and increase the stirring ability while reducing the collision with the object to be stirred.

  Further, the outer peripheral shape of the cross section perpendicular to the rotation axis direction in at least a part of the main body 10 is formed in a polygonal shape by the convex portion 10d or the concave portion 10e. By configuring the main body 10 in a relatively simple shape as described above, the strength of the main body 10 can be increased and the manufacturing cost of the main body 10 can be reduced.

  In this case, it is desirable that the outer peripheral shape of the cross section perpendicular to the rotation axis direction in at least a part of the main body 10 is formed into a polygonal shape of a dodecagon or more by the convex portion 10d or the concave portion 10e. By doing in this way, high stirring ability can be acquired, eliminating the malfunction resulting from collision with to-be-stirred objects, such as reaction at the time of a rotation start, and the grinding | pulverization of a powder particle. Moreover, since it does not have a sharp corner | angular part, while improving safety | security, it can make it hard to produce the wave loss, shaving, etc. at the time of hitting the rotating body 1 for stirring to something.

  Moreover, you may make it provide roundness in the corner | angular part of the top of the convex part 10d. By doing in this way, while improving safety | security further, it can make it harder to produce the wave loss, scraping, etc. at the time of hitting the stirring rotary body 1 to something.

  Further, the convex portion 10d or the concave portion 10e may be configured such that the outer shape in a cross section perpendicular to the rotation axis direction is a substantially arc shape. By doing in this way, stirring ability can be improved, maintaining safety | security and the difficulty of generating the damage, etc. when it hits something.

  Further, a cross-sectional area perpendicular to the flow of the suction port 12 (cross-sectional area perpendicular to the flow passing through the suction port 12) and a cross-sectional area perpendicular to the flow of the discharge port 14 (cut perpendicular to the flow passing through the discharge port 14). The ratio with the (area) is preferably set to 1/3 to 3. By doing in this way, it becomes possible to make a to-be-stirred thing flow smoothly in the flow path 16, and it can prevent that a stagnant thing accumulates in the flow path 16 and a stirring capability falls.

  The main body 10 may be configured to have a shape in which the thickness in the rotation axis direction gradually decreases toward the outside in the centrifugal direction. By doing in this way, the flow near the surface of the main body 10 can be smoothly made an accompanying flow of the jet from the discharge port 14. Thereby, since it becomes possible to generate a stronger flow, the stirring ability can be further increased. In this case, the main body 10 may partially have a portion having a constant thickness in the rotation axis direction.

  Further, a plurality of discharge ports 14 are provided, and the suction port 12 and the flow passage 16 are individually provided for each of the plurality of discharge ports 14. For this reason, it becomes possible to maintain the flow velocity in the flow passage 16 at an appropriately high speed, and it is possible to prevent the stagnant material from accumulating in the flow passage 16 and lowering the stirring ability.

  The suction port 14 is provided on the opposite side of the drive shaft 20 connected to the main body 10 for rotating the main body 10. As a result, the accumulated matter at the bottom of the container can be sucked up, so that uniform stirring without unevenness can be performed. Moreover, stirring can be performed without disturbing the liquid level of the object to be stirred.

  The suction port 12 is provided on the outer side in the centrifugal direction of the rotating shaft. For this reason, for example, as shown in FIG. 17 (b), it is possible to provide a portion protruding from the inlet 12 at the center of the front end side of the main body 10. By doing so, even when the stirring rotator 1 is brought close to the wall surface of the container, it is possible to avoid a situation in which the stirring rotator 1 is attracted to the wall surface and the suction port is blocked. Thereby, stable stirring can be performed even when the rotating body 1 for stirring is manually operated.

  Further, the stirring rotator 1 further includes an intake port 13 provided at a position closer to the rotation axis than the discharge port 14 on the surface of the main body 10, and an air passage 17 connecting the intake port 13 and the discharge port 14, By using the intake port 13 in a state where it touches the gas outside the object to be stirred, the external gas may be sucked from the air inlet 13 and introduced into the object to be stirred. By doing in this way, bubbles can be easily mixed into the object to be stirred.

  Further, the stirring device 2 according to the present embodiment is configured by arranging a plurality of stirring rotating bodies 1 in the rotation axis direction. For this reason, the stirring ability can be further increased.

  Although the embodiment of the present invention has been described above, the stirring rotating body and the stirring device of the present invention are not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. Of course, can be added.

  The stirring rotating body and the stirring device of the present invention can be used in the field of stirring of various fluids or mixing of bubbles.

DESCRIPTION OF SYMBOLS 1 Rotating body for stirring 2 Stirrer 10 Main body 10d Convex part 10e Concave part 12 Inlet 13 Inlet 14 Outlet 16 Flow path 17 Ventilation path 20 Drive shaft 100 Virtual circle C

Claims (13)

A main body configured such that at least a part of the outer peripheral shape of the cross section perpendicular to the rotation axis direction is a circle provided with a plurality of convex portions or concave portions;
An inlet provided on the surface of the body;
A discharge port provided on the surface of the main body;
A flow path connecting the suction port and the discharge port,
The suction port is disposed at a position closer to the rotation shaft than the discharge port,
The discharge port is disposed at a position on the outer side in the centrifugal direction from the rotation shaft than the suction port,
Rotating body for stirring. The convex part or the concave part has a substantially triangular outer shape in a cross section perpendicular to the rotation axis direction,
The rotating body for stirring according to claim 1. An outer peripheral shape of a cross section perpendicular to the rotation axis direction in at least a part of the main body is configured in a polygonal shape by the convex portion or the concave portion,
The rotating body for stirring according to claim 1 or 2. An outer peripheral shape of a cross section perpendicular to the rotation axis direction in at least a part of the main body is formed into a polygonal shape of a dodecagon or more by the convex portion or the concave portion,
The rotating body for stirring according to claim 3. The corner at the top of the convex part is provided with a roundness,
The rotating body for stirring according to any one of claims 1 to 4. The convex portion or the concave portion is configured such that an outer shape in a cross section perpendicular to the rotation axis direction is formed in a substantially arc shape,
The rotating body for stirring according to claim 1. The ratio of the cross-sectional area perpendicular to the flow of the suction port and the cross-sectional area perpendicular to the flow of the discharge port is set to 1/3 to 3,
The rotating body for stirring according to any one of claims 1 to 6. The main body is configured to have a shape in which the thickness in the rotation axis direction gradually decreases toward the outside in the centrifugal direction,
The rotating body for stirring according to any one of claims 1 to 7. A plurality of the discharge ports are provided,
The suction port and the flow passage are individually provided for each of the plurality of discharge ports,
The rotating body for stirring according to any one of claims 1 to 8. The suction port is provided on the opposite side of a drive shaft connected to the main body for rotating the main body,
The rotating body for stirring according to any one of claims 1 to 9. The suction port is provided on the outer side in the centrifugal direction of the rotating shaft,
The rotating body for stirring according to any one of claims 1 to 10. An intake port provided at a position closer to the rotation axis than the discharge port on the surface of the main body;
An air passage connecting the intake port and the discharge port,
By using the intake port in contact with gas outside the object to be stirred, the external gas can be sucked from the intake port and introduced into the object to be stirred.
The rotating body for stirring according to any one of claims 1 to 11. A plurality of stirring rotors according to any one of claims 1 to 12 are arranged in the direction of the rotation axis.
Stirring device.

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