JP6967297B2 - Rotating body for stirring, stirring device - Google Patents

Description

The present invention relates to a rotating body for stirring and a stirring device for stirring a fluid to promote mixing, dispersion, dissolution and the like.

Conventionally, for the purpose of mixing a plurality of fluids, uniformly dispersing and dissolving powder or the like added to the fluid, or making the temperature of the fluid uniform, the impeller or the rotating body has a hole-shaped flow passage. There is one that rotates a rotating body for stirring in a fluid (see, for example, Patent Document 1).

An impeller represented by a propeller type, a paddle type, a turbine type, etc. has a problem that air is easily entrained when rotated at high speed because of an axial flow in one direction parallel to the rotating shaft. Therefore, it is difficult to suck in suspended matter with a lighter specific gravity than fluid, the diameter cannot be reduced, the area occupied in the stirring container is large, and the low rotation speed and high torque require a reducer in the drive unit, which is large and heavy. There was a problem that there were many things.

In a rotating body for stirring in which the suction port and the discharge port are connected in an L shape and the fluid is agitated through the flow passage by the difference in the radial direction of the centrifugal force, the upward axial flow that sucks up the sediment and the suspended matter are sucked in. It has two downward axial flows, and because it has few protrusions and edges, it is also effective in suppressing cavitation, and it was also effective in reducing the diameter and high-speed rotation, but when the diameter is reduced, it becomes a hole that becomes a flow passage. There was room for improvement in terms of internal cleanability due to the small diameter of the.

If the stirring rotating body can be rotated at high speed with a small diameter without entraining air, for example, the stirring rotating body can be removed from a relatively small spout such as an Ito can (18 liter can), a pail can, a drum can, or a bag-in-box. Since it can be inserted and stirred, work such as transfer to another container can be omitted. Further, even when there is a precipitate slurry or the like as it is and it cannot be easily transferred, for example, sufficient stirring can be performed without cutting the top plate of an itto-kan (18 liter can) with a can opener. .. In addition, since it can be sealed with a spout after stirring, it can be easily moved and stored without using up the contents.

However, in the case of a commercially available electric drill, air drill, hand mixer, etc., the maximum rotation speed is not designed so that such a small-diameter rotating body for stirring has a rotation speed sufficient for stirring. If it can be entered through a spout with a small diameter and can provide sufficient stirring power even at the rotation speed of a commercially available hand drill or hand mixer, it can greatly contribute to improving the quality of fluid raw materials, preventing deterioration, improving work efficiency, and shortening time.

If the rotating body for stirring can be formed into a shape that does not use holes, grooves, or surfaces, the processability of surface treatment such as buffing and resin coating in manufacturing is good, and the detergency after use is greatly improved.

However, in the rotating body for stirring described in Patent Document 1, the diameter of the hole serving as the flow passage is small in order to reduce the diameter, and if the viscosity of the fluid is high, it may be clogged. There is room. In addition, there is room for improvement in that the holes are too small and the detergency is inferior, and it is difficult to use for applications such as food where hygiene control is strictly required. In addition, there is room for improvement in that the diameter of the deep hole that becomes the flow passage becomes smaller, and surface treatment such as buffing and resin coating in manufacturing becomes extremely difficult. In addition, the stirring force at the same diameter is significantly weaker than other rotating bodies for stirring such as the blade type, and when the ratio of capacity to the diameter of the spout is large, for example, an Ito can (18 liter can), sufficient stirring is performed. There is room for improvement in that power cannot be obtained.

Japanese Unexamined Patent Publication No. 2011-005349

One of the specific aspects of the present invention is to improve the above-mentioned points and to provide a rotating body for stirring or a stirring device having a small diameter, high stirring power, and excellent processability and detergency.

[1] One aspect of the rotating body for stirring according to the present invention has (a) a shaft extending in one direction and (b) a lower surface each facing the lower end side of the shaft, and has an upper end of the shaft. A plurality of horizontal wing portions, each of which is arranged in a different direction in a plan view from the side, and which is arranged vertically at intervals in the extending direction of the shaft, and (c) each of which is said to be horizontal. from the lower surface of the wing portion extending downward in the extending direction of the shaft, and a flat plate-like member to have a flat surface that protrudes in the radial direction of the shaft, spacing between the horizontal wings adjacent in the vertical direction look including a plurality of vertical wings which are spaced, (d) the plurality of vertical wings, the are arranged radially in a plan view from one end of the shaft, each of said planes The angle formed is arranged so as to be an angle obtained by dividing 360 ° by the number of the vertical wing portions, and (e) each of the plurality of horizontal wing portions has a plan view shape of an outer edge portion that does not contact the shaft. Is substantially circular, each radius is between 2 and 3 times the radius of the shaft, and (f) each of the plurality of vertical wings has a horizontal length in the extending direction of the shaft. It is a rotating body for stirring that is between 2 and 3 times the radius of the wing portion.
[2] stirrer aspect of the present invention includes a driving force generation device for providing a rotational force to the shaft of the stirring rotor and the stirring rotation member above SL, a stirring device.

According to the above configuration, a rotating body for stirring or a stirring device having a small diameter, high stirring power, and excellent workability and cleaning property can be obtained.

It is explanatory drawing which shows the structure of the rotating body for stirring of one Embodiment, FIG. 1A is a plan view, FIG. 1B is a front view, FIG. 1C is a bottom view, and FIG. 1D is a bottom view. It is a right side view. FIG. 2A is a plan view for explaining the arrangement state of each horizontal wing portion, and FIG. 2B is a plan view for explaining the arrangement state of each vertical wing portion. It is a figure which shows the use state of the rotating body for stirring of one Embodiment, FIG. 3A is an overall view, FIG. 3B is a vertical wing insertion state diagram, and FIG. 3C is a horizontal wing portion insertion state diagram. 3 (d) is a phase diagram in which an interval portion is inserted, and FIG. 3 (e) is a usage state diagram in an Ito can (18 liter can).

1A and 1B are explanatory views showing the structure of a rotating body for stirring according to an embodiment to which the present invention is applied. FIG. 1A is a plan view of the rotating body for stirring, and FIG. 1B is a rotating body for stirring. 1 (c) is a bottom view of the rotating body for stirring, and FIG. 1 (d) is a right side view of the rotating body for stirring. As shown in these figures, the stirring rotating body has three horizontal wing portions 12, 13, 14 and three vertical wing portions 15 centered on a shaft 11 extending in one direction (vertical direction in the figure). , 16 and 17 are arranged radially, respectively. The three horizontal wing portions 12, 13, 14 and the three vertical wing portions 15, 16 and 17, respectively, are fixed to the shaft 11 by welding and are integrated with the shaft 11.

The horizontal wing portion 12 and the vertical wing portion 15 described above form a pair to form one "wing portion", and the horizontal wing portion 13 and the vertical wing portion 16 form a pair to form one "wing portion". The horizontal wing portion 14 and the vertical wing portion 17 form a pair to form one "wing portion". That is, the rotating body for stirring of the present embodiment includes a shaft as a rotating shaft and three blades provided below the shaft. Each of the three wing portions has a substantially circular horizontal wing portion 12 to 14 arranged so as to project radially from the shaft, and vertical wing portions 15 to 17 hanging vertically from these horizontal wing portions 12 and the like. As shown in FIGS. 1 (b) and 1 (d), the three wings are substantially T-shaped in a plan view seen from the side of the shaft 11, and are spaced apart from each other in the extending direction of the shaft 11. It is arranged above and below with a space.

The horizontal wing portion 12 has a surface substantially orthogonal to the extending direction of the shaft 11 (vertical direction in FIGS. 1B and 1D) and has a lower surface facing the lower end side of the shaft 11. ing. Further, the horizontal blade portions 13 and 14 also have a similar lower surface. As shown in FIG. 1A, the lower surface of each of the horizontal blade portions 12 to 14 is a substantially circular surface when viewed in a plan view from the side of the lower end portion 18 of the shaft 11. Specifically, the lower surface of each of the horizontal wing portions 12 to 14 has an arcuate outer edge that does not contact the shaft 11, and an outer edge that contacts the shaft 11 has an arcuate shape along the surface of the shaft 11. The outer edge connecting the two arcs is straight.

In the illustrated example, the upper surface of each of the horizontal wing portions 12 to 14 is a plane that is substantially parallel to the lower surface and has substantially the same shape, but may have other shapes. For example, it may be a substantially conical shape that rises toward the upper end side of the shaft 11 and gradually narrows, or may be a slope that is inclined upward or downward with respect to the lower surface. In any case, the upper surface is preferably a smooth surface. If the upper surface is not a smooth surface such as having protrusions or holes, a strong swirling flow or suction flow may occur near the shaft 11, and the vortex flow may grow and entrain air. By doing so, such inconvenience can be suppressed.

Further, the horizontal wing portions 12 to 14 are arranged vertically at intervals from each other in the extending direction of the shaft 11. Specifically, the horizontal wing portions 12 to 14 are arranged in the order of the horizontal wing portion 12, the horizontal wing portion 13, and the horizontal wing portion 14 from the side of the lower end portion 18 of the shaft 11. Further, as shown in FIG. 1A, the horizontal wing portions 12 to 14 are radially oriented in different directions so that parts of the horizontal wing portions 12 to 14 overlap each other when viewed in a plan view from the upper end side of the shaft 11. Is located in.

The upper end of the vertical wing portion 15 is connected to the lower surface of the horizontal wing portion 12, and is provided so as to hang down from the lower surface substantially parallel to the extending direction of the shaft 11. Further, the upper end of the vertical wing portion 16 is connected to the lower surface of the horizontal wing portion 13, and the vertical wing portion 16 is provided so as to hang down from the lower surface in the same manner as described above. It is connected to the lower surface and is provided so as to hang down from the lower surface in the same manner as described above. Each of the vertical wing portions 15 to 17 is a flat plate-shaped member protruding in the radial direction of the shaft 11, and has a front surface and a back surface substantially orthogonal to the lower surface of each of the horizontal wing portions 12 to 14, respectively. The vertical wing portions 15 to 17 are arranged so that the front surfaces (or back surfaces) described above form an angle of approximately 120 °. Further, the vertical blade portions 15 to 17 have a substantially rectangular shape whose front surface and back surface are relatively long along the extending direction of the shaft 11, and a tapered shape whose width gradually narrows in a certain lower range. (See FIGS. 1 (b) and 1 (d)).

FIG. 2A is a plan view for explaining the arrangement state of each horizontal wing portion, and shows a plan view of each horizontal wing portion from the upper end side of the shaft 11. In FIG. 2A, the center of the circle of the outer edge portion of each of the horizontal blade portions 12 to 14 formed in an arc shape is indicated by a point, and the central axis of the shaft 11 is also indicated by a point. As shown in the figure, the horizontal wing portions 12 to 14 are arranged so that the angle formed by the lines connecting the center of the circle and the central axis of the shaft 11 is approximately 120 °. Although it is assumed that the angle will be 120 ° in the design, some errors may occur during actual manufacturing, so this angle can be allowed up to a range of, for example, 120 ° ± 10 °. Each of the horizontal wing portions 12 to 14 is arranged so that the center of each circle keeps a certain distance from the shaft 11 and surrounds the shaft 11 in a plan view.

FIG. 2B is a plan view for explaining the arrangement state of each vertical wing portion, and shows a plan view of each vertical wing portion from the lower end side of the shaft 11. As shown in the figure, each of the vertical blade portions 15 to 17 is arranged so that the angle formed by each extending direction (indicated by a thin line in the figure) in the radial direction of the shaft 11 is approximately 120 °. Although it is assumed that the angle will be 120 ° in the design, some errors may occur during actual manufacturing, so this angle can be allowed up to a range of, for example, 120 ° ± 10 °. Further, the vertical wing portions 15 to 17 are arranged so as to be vertically overlapped with the center of the circle of the horizontal wing portions 12 to 14 described above.

The stirring device can be configured by attaching the upper end side of the shaft 11 of the rotating body for stirring of the present embodiment shown in FIG. 1 to the output shaft of the motor (see FIG. 3 (e) described later). When stirring the object, the rotating body for stirring is immersed in the fluid to be agitated in the stirring container. If the depth of the agitated fluid is shallow, one or two of the three horizontal wing portions 12, 13, 14 and the three vertical wing portions 15, 16 and 17 may not be immersed. Since the required stirring force and the capacity of the fluid to be stirred are in a proportional relationship, there is no problem in stirring.

By applying a driving force by a motor or the like to rotate the shaft 11, the three horizontal wing portions 12, 13, 14 and the three vertical wing portions 15, 16 and 17 fixed to the shaft 11 are rotated. At this time, the fluid in the vicinity of the vertical blade portions 15, 16 and 17 provided under the horizontal blade portions 12, 13 and 14 also rotates with the rotation of the stirring rotating body. Since centrifugal force acts on the fluid in proportion to the rotation speed, the fluid is discharged from the outermost peripheral portions of the vertical blade portions 15, 16 and 17 in the tangential direction. At this time, at the lower portions of the vertical blade portions 15, 16 and 17, the pressure is lowered by the discharged fluid, and the fluid is continuously sucked up from the lower side of each blade portion.

The stirring rotating body of the present embodiment exemplifies a small diameter size that is particularly suitable for insertion from a can (18 liter can), a pail can, or a bag-in-box spout. As an example, the shaft 11 has a diameter of 12 mm, the horizontal wing portions 12, 13 and 14 have a radius of 14.5 mm, the vertical wing portions 15, 16 and 17 have a vertical length of 28 mm, and the distance between the horizontal wing portions is 28 mm. Is 30 mm, and the plate thickness of the horizontal wing portion 12 and the like and the vertical wing portion 15 and the like is 2 mm. The thickness of each of the horizontal wing portion 12 and the like and the vertical wing portion 15 and the like is preferably at least 1.5 mm or more because the thinner the thickness, the better the stirring efficiency, but the lower the structural strength. ..

Since the width of each end of the horizontal wings 12, 13 and 14 and the end of the shaft 11 is 30 mm, each of the horizontal wings is a small size in the spout of an Ito can (18 liter can). It can be easily inserted into a hole with a diameter of 33 mm.

3A and 3B are reference views showing a usage state of the rotating body for stirring of the present embodiment, FIG. 3A is an overall view, FIG. 3B is a vertical blade insertion state diagram, and FIG. 3C is a horizontal diagram. The wing portion insertion state diagram, FIG. 3 (d) is an interval portion insertion state diagram, and FIG. 3 (e) is a usage state diagram of an Ito can (18 liter can).

As shown in FIG. 3, in the stirring rotating body of the present embodiment, the entire stirring rotating body of FIG. 3A is inserted from the spout of the container in a state where the rotation is stopped.

FIG. 3B is a state diagram in which the vertical wing portion is inserted into the spout of the container. Since the vertical wing portion 15 (or 16, 17) can be inserted by aligning the shaft 11 with the edge of the spout, the rotating body for stirring can be easily inserted into the container.

FIG. 3C is a state diagram in which the horizontal wing portion is inserted into the spout of the container. Since the horizontal wing portion 12 (or 13, 14) can be inserted along the edge of the spout with the shaft 11, the rotating body for stirring can be easily inserted into the container.

FIG. 3D is a state diagram in which the space between the upper horizontal wing portion and the lower horizontal wing portion is inserted. After the lower horizontal wing portion 12 and the vertical wing portion 15 have passed through the spout due to the insertion of the shaft 11, the positions of the middle tier horizontal wing portion 13 and the vertical wing portion 16 are shifted by moving the shaft 11 in the horizontal direction. As a result, the horizontal wing portion 13 and the vertical wing portion 16 in the middle stage can also be smoothly inserted. The same applies to the horizontal wing portion 14 and the vertical wing portion 17 in the upper stage.

FIG. 3 (e) is a usage state diagram of an Ito can (18 liter can) as a container. A state in which all of the three horizontal blade portions 12 to 14 and the vertical blade portions 15 to 17 are immersed in the agitated fluid 19 is shown. Since the lower end portion (tip portion) 18 of the shaft 11 has a hemispherical shape, even if the shaft 11 comes into contact with the bottom of the container, it is possible to avoid damaging the container and generating shavings. Further, by moving the shaft 11 up, down, left and right, the state of the precipitated slurry can be confirmed.

When the rotating body for stirring is inserted in the state shown in FIG. 3 (e), the rotation of the driving force generator 20 such as a hand drill or a hand mixer is started to stir the fluid to be agitated 19.

Since the suction flow, suction flow, and stirring flow brought about by the vertical blades 15 to 17 in the upper and lower stages form a complicated turbulent flow and stir, it is not necessary to move the handle like the conventional hand mixers. , Effective stirring can be performed.

Even when the rotating body for stirring is washed after the stirring work is completed, the amount of an organic solvent or cleaning liquid used, for example, can be small because the diameter is small.

For example, when the cleaning liquid is put in the same container for cleaning, the cleaning liquid does not scatter even if it is rotated in the same manner as stirring, and the surroundings can be kept clean.

For example, even if the agitated fluid 19 is not used up and remains in the container, the spout can be moved or stored by closing the lid in the original state.

The stirring rotating body of the present embodiment is immersed in the agitated fluid 19 and rotates around the axis. The fluid in the vicinity of the vertical blade portion 15 and the like rotates with the rotation of the rotating body for stirring. Since the action of centrifugal force acts on the fluid in proportion to the rotation speed, the fluid is ejected in the tangential direction from the outermost peripheral portion such as the vertical blade portion 15. At this time, the pressure drops due to the injected fluid on the outside of the horizontal wing portion 12 and the like, and the fluid is continuously sucked up from the lower side of the horizontal wing portion 12 and the like.

The flow of the fluid sucked up from the lower side of the horizontal wing portion 12 or the like becomes a spiral flow, which grows elongated to form a tornado flow, reaches the bottom of the tank, and is a precipitate of the agitated fluid 19 having a large specific gravity. Is continuously sucked up, and effective stirring is realized.

The fluid discharged tangentially from the outermost peripheral portion such as the vertical blade portion 15 reaches the tank wall of the stirring container, and when the tank wall is parallel to the rotation axis, the fluid is divided in the vertical direction and flows downward. The fluid is connected to a spiral torrent flow to form a suction circulation flow.

Further, since the fluid discharged in the tangential direction from the outermost peripheral portion of the vertical wing portion 15 or the like has a higher flow velocity than the surroundings, according to Bernoulli's theorem, the fluid is discharged from the water surface near the center on the upper side of the horizontal wing portion 12 or the like. A suction flow is continuously generated downward.

The fluid that flows upward from the tank wall described above is connected to the suction flow downward from the water surface, and forms a suction circulation flow that sinks suspended matter having a light specific density. However, here, when the rotation speed is relatively high, a mortar-shaped vortex flow is also generated by the swirling flow, but since the rotating body for stirring sucks from below, the vortex flow grows on the upper surface of the horizontal blade portion 12, etc. Does not reach the point where the rotating body for stirring stops and entrains air.

That is, in the stirring using the stirring rotating body of the present embodiment, two circulating flows are formed, that is, a suction circulating flow for the precipitate and a suction circulating flow for the suspended matter, and the two flows are in the vicinity of the stirring rotating body. By meeting at the above, ideal stirring is possible in which the fluids 19 to be agitated, which are separated vertically and have different specific gravities, are brought together and separated. In the example in which the horizontal wing portion 12 and the like and the vertical wing portion 15 and the like shown in the present embodiment have three stages, three sets of two circulating flows are formed, and the field becomes a complicated flow close to turbulent flow. To promote.

In a conventional stirrer, when the swirling flow becomes large due to high-speed rotation, the fluid to be agitated, which has different specific densities, is separated into upper and lower parts. There was an inconvenience that it was separated in the outer peripheral direction.

In the rotating body for stirring of the present embodiment, both the suction circulating flow and the suction circulating flow are brought toward the center from the outer periphery, and are separated by the injection flow at the outer peripheral portion of the horizontal wing portion, so that they are separated from each other on a horizontal surface. Even when observing, an ideal stirring flow of moving away is possible.

It is often misunderstood that if you turn it, it will mix, but it is clear that the swirling flow is not always a necessary function for stirring, even if you consider the mechanism that the washing machine reverses and the cyclone vacuum cleaner separates dust. Rather, homogenization is hindered by the centrifugal action.

The stirring rotating body of the present embodiment, which realizes a stirring flow that sucks up the sediment and at the same time sucks in the suspended matter and pulls it away, has high speed rotation, miniaturization, weight reduction, cost reduction, and improvement in cleanability. It is expected that the realization of this will be applied in many industries and will greatly contribute to shortening the working time, improving the quality of the fluid to be agitated, and simplifying the equipment.

As described above, according to the present embodiment, by arranging the shaft 11 in the fluid in the container while applying a rotational force to the shaft 11 by the driving force generating device 20 such as a motor, in each of the three horizontal blade portions 12 and the like. The fluid is discharged in the centrifugal direction of the shaft, and the fluid is sucked from below the horizontal wing portion 12 or the like along with the discharge, so that the effect of sucking up the slurry settled in the container can be obtained and the horizontal wing portion 12 or the like can be sucked up. By forming the upper surface into a shape without protrusions such as irregularities, it is possible to suppress the growth of eddy currents from the liquid surface and suppress foaming due to the entrainment of air.

In addition, since the flow velocity of the discharged fluid becomes significantly faster in the container, the pressure of the fluid near the horizontal plane such as the horizontal wing portion 12 decreases, and the effect of sucking up the precipitated slurry and the floating matter on the liquid surface are combined. It has the effect of inhaling.

Further, since the horizontal wing portions 12 and the like are spaced apart from each other, even for a container having a relatively small diameter of the spout, stirring with an apparently larger diameter than the diameter of the spout is agitated. It is possible to insert a rotating body.

That is, as described with reference to FIG. 3, the lowermost horizontal wing portion 12 and vertical wing portion 15 are inserted into the spout, and the interval portion of the rotating body for stirring is set at the same position as the spout. The shaft is moved horizontally (in the radial direction of the spout) so that the second horizontal wing portion 13 is aligned with the spout, and the second horizontal wing portion 13 and the vertical wing portion 16 are inserted. Further, in the same manner, the shaft is moved in the horizontal direction to insert the third horizontal wing portion 14 and the vertical wing portion 17. In this way, all three horizontal wing portions 12 and the like and the vertical wing portion 15 and the like can be easily arranged in the container if the diameter is about the same as the width of one horizontal wing portion and the shaft combined. ..

After arranging the rotating body for stirring in the container as described above, the apparent diameter of the swirling range of the horizontal wing portion is larger than the diameter of the spout, so that a larger stirring force can be obtained. .. For example, when compared with a conventional rotating body for stirring having a U-shaped groove, the apparent diameter becomes about 1.6 times when compared under the condition of entering the same spout, and it is produced by centrifugal force. Since the flow velocity of the discharge flow is also about 1.6 times, there is an effect that the stirring force is increased. Therefore, for example, it can be particularly preferably used in a container such as an Ito can (18 liter can), a pail can, a drum can, and a bag-in-box.

Further, according to the present embodiment, a rotating body for stirring can be obtained by welding a horizontal wing portion and a vertical wing portion made of metal or the like to a shaft made of a round bar material such as metal, so that the rotating body for stirring is low. It can be manufactured at a cost.

Further, according to the present embodiment, since it is not necessary to press-mold the sheet metal to form the shape of the blade unlike the propeller type, it is not necessary to manufacture the mold, and the blade to be welded is formed like the paddle type. There is no need for jigs or gauges for positioning and fixing, and even when the number of products to be manufactured is small, it can be manufactured at low cost and the degree of freedom in design can be increased.

Further, according to the present embodiment, since it is lighter and has a smaller moment than a conventional rotating body for stirring having a hole-shaped flow passage and a U-shaped groove, it is used by an operator such as a hand mixer. The burden of doing so can be reduced.

Further, according to the present embodiment, the processability of surface treatment such as buffing and resin coating in manufacturing is significantly higher than that of a conventional rotating body for stirring having a hole-shaped flow path and a U-shaped groove. It is improved to reduce the manufacturing cost and stabilize the quality of surface treatment.

Further, according to the present embodiment, as compared with the conventional rotating body for stirring having a hole-shaped flow passage and a U-shaped groove, even when the apparent diameter is the same, the volume is small, so that the rotating body for stirring is small. The amount of change in the liquid level when the body is immersed in the fluid can be reduced.

Further, according to the present embodiment, as compared with the conventional rotating body for stirring having a hole-shaped flow passage and a U-shaped groove, the fitting of holes, the gap corrosion of the set screw, and the adhesion and corrosion of the agitated object are performed. It becomes easy to take measures against.

Further, according to the present embodiment, as compared with the conventional rotating body for stirring having a hole-shaped flow passage, the stirring force is reduced due to hole clogging even in the case of a solid substance or a fluid to be stirred having low fluidity. Never.

Further, according to the present embodiment, since the structure is simple as compared with the conventional rotating body for stirring having a hole-shaped flow passage, cleaning after use is easy, and foreign matter can be reliably removed visually. It is characterized by being able to do it.

The present invention is not limited to the contents of the above-described embodiment, and can be variously modified and carried out within the scope of the gist of the present invention.

For example, the radius of each horizontal wing portion that is substantially circular is preferably between 2 and 3 times the radius of the shaft. Further, it is desirable that the diameter of the shaft is a material dimension that is generally easily available. This optimizes the balance between structural strength and stirring force. The radius of each horizontal wing must be smaller than the radius of the spout of the container to be used.

Further, the length of the shaft in the extending direction of each vertical wing portion is preferably 2 to 3 times the radius of the horizontal wing portion. This makes the effect of suppressing the entrainment of air more preferable.

Further, it is preferable that the radial end portion of the shaft of each vertical wing portion is arranged inside the outer circumference without protruding from the outer circumference of each horizontal wing portion. As a result, even if the vertical wing portion comes into contact with the wall surface of the container, the risk of shavings or the like being generated and foreign matter being mixed can be reduced. If the end of the vertical wing is significantly inside the outer circumference of the horizontal wing, the horizontal wing may get caught in the edge of the spout when the horizontal wing is inserted into the spout. It is preferable that the end portion of the vertical wing portion is arranged slightly (for example, about 2 to 5 mm) inward from the outer circumference of each horizontal wing portion.

Further, the distance between the horizontal wing portions arranged in the extending direction of the shaft is preferably sufficiently larger than the structural thickness of the spout of the container, and is preferably about 20 to 40 mm, for example. This improves workability when moving the shaft in the horizontal direction when the horizontal wing portion is inserted.

The number of horizontal and vertical wings is determined by the depth of the container fluid, the length of the vertical wings, and the distance between the horizontal wings, but it is preferably 2 to 5 steps. .. If the number of steps is larger than this, workability may be impaired in the application of inserting through a spout. However, for example, when it is used for an open container, it may have 5 or more stages. Further, it is desirable that the number of each of the horizontal wing portion and the vertical wing portion is an odd number. This makes it more stable even when rotating at high speed.

Further, the vertical wing portions are arranged radially when viewed from the shaft end side, and the angle formed by each of them may be an angle obtained by dividing 360 ° by the number of vertical wing portions (or horizontal wing portions). desirable. This makes it more stable even when rotating at high speed.

Further, the plan view shape of the horizontal wing portion is not limited to the above-mentioned substantially circular shape. In principle, any shape may be used as long as it has at least a plane facing the lower end side of the shaft 11, and may be a polygon such as a hexagon or an octagon. Similarly, the plan view shape of the vertical wing portion is not limited to the above-mentioned vertically long substantially rectangular shape. It may be semicircular, 1/4 circular, or other fan-shaped, or it may have a shape such as a substantially triangular shape whose width (length in the radial direction of the shaft) narrows toward the lower end side of the shaft 11. ..

11 ... Shaft 12, 13, 14 ... Horizontal wing 15, 16, 17 ... Vertical wing 18 ... Tip 19 ... Agitated fluid 20 ... Driving force generator

Claims (5)

A shaft that extends in one direction,
Each has a lower surface facing the lower end side of the shaft, and each is arranged in a different direction in a plan view from the upper end side of the shaft, and is spaced apart from each other in the extending direction of the shaft. With multiple horizontal wings placed above and below,
Each depending from the lower surface of the horizontal wing portion in the extending direction of the shaft, and a flat plate-like member to have a flat surface that protrudes in the radial direction of the shaft, and the horizontal wing portions adjacent in the vertical direction Multiple vertical wings placed at intervals between
Only including,
The plurality of vertical wing portions are arranged radially in a plan view from one end side of the shaft, and the angle formed by each of the planes is 360 ° divided by the number of the vertical wing portions. Is located in
Each of the plurality of horizontal wing portions has a substantially circular shape in plan view of the outer edge portion not in contact with the shaft, and each radius is between 2 and 3 times the radius of the shaft.
Each of the plurality of vertical wing portions has a length of the shaft in the extending direction between two and three times the radius of the horizontal wing portion.
Rotating body for stirring. The number of each of the plurality of horizontal wing portions and the plurality of vertical wing portions is an odd number.
The rotating body for stirring according to claim 1. Each of the plurality of vertical wing portions is arranged so that the radial end portion of the shaft does not protrude from the outer circumference of each of the plurality of horizontal wing portions.
The rotating body for stirring according to claim 1 or 2. The lower end of the shaft has a hemispherical shape.
The rotating body for stirring according to any one of claims 1 to 3. A stirring device including the stirring rotating body according to any one of claims 1 to 4 and a driving force generating device for applying a rotational force to the shaft of the stirring rotating body.

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