JP6912994B2 - Stirrer blade, stirrer and stirrer - Google Patents

Description

The present invention relates to a stirring blade attached to a stirring shaft of a rotating device, and more particularly to a stirring blade having an excellent defoaming effect on an object to be agitated, and a stirrer and a stirring device using the stirring blade.

Conventionally, liquid stirring operations have been performed in various industrial fields. For example, paper, the coating machine line for applying a coating material to the surface of the sheet such as a film, coating and storing it while stirring at a stirring tank equipped with a攪agitator, coating from the stirring tank by a pump The paint is transferred to the machine, and the paint is applied to the sheet-like material by the coating machine. Stirring the paint in the stirrer tank is a necessary operation from the viewpoint of uniform dispersion of paint components, ensuring coating quality, etc., but on the other hand, bubbles may be generated as the paint is agitated. Foaming caused by stirring the liquid may cause inconveniences such as deterioration of production efficiency and quality, and environmental pollution.

Patent Document 1 describes a stirring blade for liquid stirring, which has excellent liquid mixing and stirring performance and is less likely to cause adhesion of bubbles due to stirring. The stirring blade described in Patent Document 1 is formed from a support plate attached to the lower end of a stirring shaft rotatably suspended in a stirring tank so as to be perpendicular to a rotation plane, and from the lower end surface of the support plate. It is configured to include a plurality of strip-shaped wings that hang down and are intermittently arranged in the longitudinal direction of the support plate.

Patent Document 2 states that in a system for reducing excess sludge generated by microbial treatment of organic sewage, a stirrer having a screw-shaped stirring blade is preferable as a stirrer for stirring and defoaming sludge containing air bubbles. Further, it is described that the angle of the screw-shaped stirring blade is preferably 5 to 85 degrees with respect to the liquid level of sludge.

Patent Document 3, when preparing a formulation material for voltage non-linear resistor of zinc oxide and various additives, as攪拌翼for performing degassing of the slurry containing the formulation material at stirring vessel, The one provided with two types of stirring blades, a stirring blade for stirring arranged in the center of the upper part of the stirring tank and a stirring blade for defoaming arranged in the center of the lower part, is described. Each of the two types of stirring blades is composed of two members extending horizontally in a direction away from the stirring shaft, and the two members extend in opposite directions from the stirring shaft. According to Patent Document 3, the bubbles in the slurry are raised by the stirring blade arranged below, and the rising bubbles are destroyed by the stirring blade for defoaming arranged above.

Japanese Unexamined Patent Publication No. 7-787 Japanese Unexamined Patent Publication No. 2005-169252 Japanese Unexamined Patent Publication No. 63-62507

The techniques described in Patent Documents 1 to 3 have room for improvement in terms of defoaming effect. Therefore, an object of the present invention is to provide a stirring blade, a stirring machine and a stirring device having an excellent defoaming effect.

The present invention is a stirring blade attached to a stirring shaft rotatably suspended inside a stirring tank, and a predetermined distance upward from a first unit attached to the stirring shaft and a mounting position of the first unit. The first unit is provided with a second unit attached to the stirring shaft at a separated position, and the first unit extends diagonally upward in a direction away from the stirring shaft in a state of being attached to the stirring shaft. A member and a plurality of rod-shaped members extending from the first support member to the front side in the rotation direction of the stirring shaft are provided, and the second unit is attached to the stirring shaft, and the stirring shaft is attached to the stirring shaft. It is a stirring blade including a second supporting member extending in a direction intersecting the axial direction of the stirring shaft, and a plurality of rod-shaped members extending from the second supporting member to the front side in the rotation direction of the stirring shaft.

Further, the present invention is a stirrer including a stirring shaft that can be attached to and detached from the rotating device and a stirring blade attached to the stirring shaft, and the stirring blade is the stirring blade of the present invention.

Further, the present invention is a stirring device including a stirring tank in which an object to be agitated is housed, a stirring shaft rotatably installed inside the stirring tank, and a stirring blade attached to the stirring shaft. The stirring blade is the stirring device which is the stirring blade of the present invention.

According to the present invention, a stirring blade, a stirring machine and a stirring device having an excellent defoaming effect are provided.

FIG. 1 is a diagram showing a schematic configuration of an embodiment of the stirring device of the present invention. FIG. 2 is a schematic perspective view of the stirrer in the stirrer shown in FIG. FIG. 3 is a schematic top view of the first unit in the stirring device shown in FIG. FIG. 4 is a schematic top view of the second unit in the stirring device shown in FIG.

Hereinafter, the present invention will be described based on the preferred embodiment with reference to the drawings. FIG. 1 shows a schematic configuration of a stirrer 1 which is an embodiment of the stirrer of the present invention. As shown in FIG. 1, the stirring device 1 includes a stirring tank 2 in which the object to be stirred S is housed, a stirring shaft 3 rotatably installed inside the stirring tank 2, and the stirring shaft 3. It is provided with a stirring blade 4 attached to the.

As shown in FIG. 1, the stirring tank 2 has a shape (for example, a conical shape) in which the diameter of the stirring tank gradually decreases from the top to the bottom. The outer shape of the stirring tank 2 is not particularly limited, and other than the shape shown in FIG. 1, for example, a bottomed tubular shape whose inner diameter does not change in the vertical direction may be used. The upper part of the stirring tank 2 is covered with a lid 21. The lid 21 is formed with at least one charging port (not shown), and the object to be agitated S can be charged directly into the stirring tank 2 from the charging port or through a pipe (not shown). A rotating device 5 for rotating the stirring shaft 3 is arranged above the lid 21. The rotating device 5 is configured to include a driving source for stirring such as a motor, and is configured in the same manner as the rotating device in this type of stirring device. Further, a bottom discharge port (not shown) for discharging the agitated object S inside the agitating tank 2 is provided at the bottom of the agitating tank 2, and a pipe (not shown) for transferring the agitated object S to the bottom discharge portion (not shown). (Not shown) is provided.

The agitated object S housed inside the agitating tank 2 is usually a liquid (a fluid substance) at normal temperature and pressure. The agitated object S is not particularly limited, and various liquids that require a stirring operation can be applied. For example, when the agitator 1 is used for producing a coated paper obtained by applying a paint to a base sheet, the agitated object S can be the paint.

The stirring shaft 3 penetrates the lid 21 in the thickness direction and extends in the vertical direction Z from the inside and outside of the stirring tank 2 at the center position of the stirring tank 2, and the upper end side in the longitudinal direction thereof is the outside of the stirring tank 2. It is connected to the rotating device 5 arranged in. When the rotating device 5 is operated, the stirring shaft 3 rotates around the shaft (direction indicated by reference numeral R in FIG. 1), and the stirring blades 4 (first unit 4A and second unit 4B) rotate in the same direction accordingly. Rotate. The stirring shaft 3 is removable from the rotating device 5.

One of the main features of the stirring device 1 of the present embodiment is the characteristic outer shape of the stirring blade 4. FIG. 2 shows a stirrer included in the stirrer 1, that is, a stirrer including a stirrer shaft 3 detachable from the rotating device 5 and a stirrer blade 4 attached to the stirrer shaft 3. Further, FIG. 3 shows the first unit 4A constituting the stirring blade 4. Since FIG. 1 is a diagram showing a schematic configuration of the stirring device 1 including the stirring blade 4, each part of the device, such as the number of rod-shaped members 42, is simplified from FIGS. 2 and 3, and each part of the device is simplified. For details, FIG. 1, FIG. 2 and FIG. 3 do not always match.
The stirring blade 4 includes a first unit 4A attached to the stirring shaft 3 and a second unit 4B attached to the stirring shaft 3 at a position separated from the mounting position of the first unit 4A by a predetermined distance.

The first unit 4A includes a first support member 41 (tilt support member) that extends diagonally upward in a direction away from the stirring shaft 3 in a state of being attached to the stirring shaft 3 as shown in FIGS. 1 and 2. A plurality of rod-shaped members 42 extending from the first support member 41 to the front side in the rotation direction (R direction in the drawing) of the stirring shaft 3 are provided. In the stirring device 1, the first unit 4A is further provided with a fixture 43, which is detachably fixed to the stirring shaft 3 via the fixture 43. As shown in FIG. 3, the fixture 43 has a stirring shaft insertion portion 43A into which the stirring shaft 3 is inserted. The first support member 41 is fixed to the fixture 43.

In the stirring device 1, the first unit 4A includes a plurality of first support members 41 (four in the illustrated form), and the plurality of first support members 41 are evenly arranged around the stirring shaft 3. That is, in the stirring device 1, the intervals (pitches) between the two adjacent first support members 41 and 41 in the circumferential direction of the stirring shaft 3 are the same. The plurality of first support members 41 have the same shape and the same dimensions as each other. The first support member 41 has a long flat plate shape in one direction, and its longitudinal direction X1 (see FIGS. 2 and 3) coincides with the direction away from the stirring shaft 3. Further, the surface directions of the front and back surfaces (surfaces on both ends in the thickness direction) of the first support member 41 intersect both the vertical direction Z (the three axial directions of the stirring shaft) and the horizontal direction, and the rotation direction R It is an inclined surface that is inclined with respect to. The rod-shaped member 42 is arranged only on one surface of the inclined front and back surfaces of the first support member 41, specifically, the front surface of the stirring shaft 3 in the rotation direction R, that is, the other surface, that is, the other surface. It is not arranged on the rear surface of the rotation direction R. The shape, dimensions, and arrangement pattern of the rod-shaped members 42 in each of the plurality (4) first support members 41 included in the first unit 4A are the same as each other.

The plurality of rod-shaped members 42 of the first support member 41 are arranged in a predetermined pattern as shown in FIGS. 2 and 3 on the front side surface in the rotation direction. Specifically, a row of rod-shaped members in which a plurality of (seven in the illustrated embodiment) rod-shaped members 42 are intermittently arranged in the longitudinal direction X1 of the first support member 41 is in the width direction Y1 orthogonal to the longitudinal direction X1. The pattern is arranged in a plurality of rows (three rows in the illustrated form), and the plurality of rod-shaped members 42 are intermittently arranged in both the longitudinal direction X1 and the width direction Y1 of the first support member 41. The pitch 42Px (see FIG. 2) of the plurality of rod-shaped members 42 in the rod-shaped member row, that is, the distance between the centers of the two rod-shaped members 42, 42 adjacent to each other in the longitudinal direction X1 of the first support member 41 is uniform. Further, the pitch 42Py (see FIG. 2) of the plurality of rod-shaped members 42 adjacent to each other in the width direction Y1 of the first support member 41 is also uniform.

The plurality of rod-shaped members 42 of the first support member 41 each have a long shape in one direction, and their longitudinal directions coincide with the horizontal direction orthogonal to the vertical direction Z (axial direction of the stirring shaft 3). Further, each of the plurality of rod-shaped members 42 has a circular shape in a cross-sectional view along a direction orthogonal to the longitudinal direction thereof. The delivery length of the rod-shaped member 42 (diameter when the rod-shaped member 42 has a circular shape in cross section) 42R (see FIG. 3) is constant over the entire length in the axial direction, that is, the longitudinal direction, and is substantially unchanged. Further, the diameters 42R of the plurality of rod-shaped members 42 are the same as each other.

The first support member 41 and the rod-shaped member 42 may be integrally formed, or may be formed by fixing a separate rod-shaped member 42 to the first support member 41. In the latter case, the fixing method of both members 41 and 42 is not particularly limited, and an appropriate fixing method may be selected from known fixing methods according to the materials and the like of both members 41 and 42. For example, both members 41 and 42 may be fixed. When is a metal, welding can be exemplified.

In the first support member 41 of the stirring device 1, the plurality of rod-shaped members 42 have a plurality of rod-shaped members 42 having different extension lengths 42L (see FIG. 3) from the support member 41, as shown in FIGS. 2 and 3. A group of non-uniform rod-shaped members including rod-shaped members 42 is included. In the illustrated embodiment, the rod-like member train consisting of a plurality of bar-like members 42 which are intermittently arranged in the longitudinal direction X1 of the first support member 41 is constituted of only the heterogeneous rod-like member group, the one first since 1 cylindrical object column to the support member 41 is present three rows, so that the nonuniform rod-like member group is present three. Then, in each of the three non-uniform rod-shaped member groups, the plurality of rod-shaped members 42 are arranged on the first support member 41 so that the extension length 42L gradually becomes shorter as the distance from the stirring shaft 3 increases.

Further, the second unit 4B extends from the stirring shaft 3 in a direction intersecting the axial direction (vertical direction Z) of the stirring shaft 3 in a state of being attached to the stirring shaft 3 as shown in FIGS. 1 and 2. A support member 44 and a plurality of rod-shaped members 45 extending from the second support member 44 to the front side in the rotation direction (R direction in the drawing) of the stirring shaft 3 are provided. In the stirring device 1, as shown in FIGS. 1 and 2, the second support member 44 extends horizontally from the stirring shaft 3 (in the direction orthogonal to the extension direction Z), and can also be referred to as a horizontal support member. .. Further, in the stirring device 1, the second unit 4B is further provided with a fixture 46, which is detachably fixed to the stirring shaft 3 via the fixture 46. As shown in FIG. 4, the fixture 46 has a stirring shaft insertion portion 46A into which the stirring shaft 3 is inserted. The second support member 44 is fixed to the fixture 46.

In the stirring device 1, the second unit 4B includes a plurality of second support members 44 (four in the illustrated embodiment), and the plurality of second support members 44 are evenly arranged around the stirring shaft 3. That is, in the stirring device 1, the intervals (pitches) between the two adjacent second support members 44, 44 in the circumferential direction of the stirring shaft 3 are the same. The plurality of second support members 44 have the same shape and the same dimensions as each other. The second support member 44 has a long flat plate shape in one direction, and its longitudinal direction X2 (see FIGS. 2 and 4) coincides with the direction away from the stirring shaft 3. Further, the surface directions of the front and back surfaces (the surfaces on both ends in the thickness direction) of the second support member 44 intersect both the vertical direction Z (the three axial directions of the stirring shaft) and the horizontal direction, and the rotation direction R It is an inclined surface that is inclined with respect to. The rod-shaped member 45 is arranged only on one surface of the inclined front and back surfaces of the second support member 44, specifically, the front surface of the stirring shaft 3 in the rotation direction R, that is, the other surface, that is, the other surface. It is not arranged on the rear surface of the rotation direction R. The shape, dimensions, and arrangement pattern of the rod-shaped members 45 in each of the plurality (4) second support members 44 included in the second unit 4B are the same.

The plurality of rod-shaped members 45 of the second support member 44 are arranged in a predetermined pattern as shown in FIGS. 2 and 4 on the front side surface in the rotation direction. Specifically, a row of rod-shaped members in which a plurality of (8 in the illustrated embodiment) rod-shaped members 45 are intermittently arranged in the longitudinal direction X2 of the second support member 44 is in the width direction Y2 orthogonal to the longitudinal direction X2. The pattern is arranged in a plurality of rows (three rows in the illustrated form), and the plurality of rod-shaped members 45 are intermittently arranged in both the longitudinal direction X2 and the width direction Y2 of the second support member 44. The pitch 45Px (see FIG. 2) of the plurality of rod-shaped members 45 in the rod-shaped member row, that is, the distance between the centers of the two rod-shaped members 45, 45 adjacent to each other in the longitudinal direction X2 of the second support member 44 is uniform. Further, the pitch 45Py (see FIG. 2) of the plurality of rod-shaped members 45 adjacent to each other in the width direction Y2 of the second support member 44 is also uniform.

The plurality of rod-shaped members 45 of the second support member 44 each have a long shape in one direction, and their longitudinal directions coincide with the horizontal direction orthogonal to the vertical direction Z (axial direction of the stirring shaft 3). Further, each of the plurality of rod-shaped members 45 has a circular shape in a cross-sectional view along a direction orthogonal to the longitudinal direction thereof. The delivery length of the rod-shaped member 45 (diameter when the rod-shaped member 45 has a circular shape in cross section) 45R (see FIG. 4) is constant over the entire length in the axial direction, that is, the longitudinal direction, and is substantially unchanged. Further, the diameters 45R of the plurality of rod-shaped members 45 are the same as each other.

The second support member 44 and the rod-shaped member 45 may be integrally formed, or may be formed by fixing a separate rod-shaped member 45 to the second support member 44. In the latter case, the fixing method of both members 44, 45 is not particularly limited, and an appropriate fixing method may be selected from known fixing methods according to the materials of both members 44, 44, for example, both members 44, 45. When is a metal, welding can be exemplified.

In the second support member 44 of the stirring device 1, the plurality of rod-shaped members 45 have a plurality of rod-shaped members 45 having different extension lengths 45L (see FIG. 4) from the support member 44, as shown in FIGS. 2 and 4. A group of non-uniform rod-shaped members including rod-shaped members 45 is included. In the illustrated embodiment, the rod-like member train consisting of a plurality of bar-like members 45 which are intermittently arranged in the longitudinal direction X2 of the second support member 44 is constituted of only the heterogeneous rod-like member group, the one first since 2 cylindrical object column on the support member 44 is present three rows, so that the nonuniform rod-like member group is present three. Then, in each of the three non-uniform rod-shaped member groups, the plurality of rod-shaped members 45 are arranged on the second support member 44 so that the extension length 45L gradually becomes shorter as the distance from the stirring shaft 3 increases.

According to the stirring device 1, since the stirring blade 4 having the characteristic outer shape as described above is provided, the defoaming effect of the object to be stirred S is excellent. That is, since the stirring blade 4 includes a first unit 4A attached to the lower side of the stirring shaft 3 and a second unit 4B attached to the upper side, the stirring blade 4 (both units 4A and 4B) is attached to the stirring shaft. When rotating in the direction indicated by R in the figure with the rotation of 3, first, the first unit 4A breaks the bubbles in the agitated object S, and the relatively small bubbles generated by the defoaming are the agitated object. Ascends in S, then the small bubbles reach the second unit 4B and are ruptured again. As described above, in the stirring device 1, the two units 4A and 4B perform two-stage defoaming, and since each of the units 4A and 4B has a high defoaming ability, the stirring device 1 is removed. Excellent foam effect.

In particular, in the first unit 4A, as described above, each of the plurality of first support members 41 extends diagonally upward in the direction away from the stirring shaft 3, that is, on the upper side with respect to the horizontal direction (second unit 4B). Since it is arranged so as to have a predetermined angle θha (see FIG. 2) on the side), small bubbles generated by rupture of bubbles in the first unit 4A easily rise to the second unit 4B side, and both units 4A, Two-step defoaming by 4B is surely and smoothly performed, and the defoaming effect is excellent.

Further, in the first unit 4A, a plurality of rod-shaped members 42 extending in the horizontal direction are arranged in the X1 direction and on the front surface of the first support member 41 extending in the direction away from the stirring shaft 3 (X1 direction) in the rotation direction R. Since the first unit 4A is intermittently arranged in both of the Y1 directions orthogonal to the stirring shaft 3, when the first unit 4A rotates in the direction indicated by R in the drawing as the stirring shaft 3 rotates, the bubbles in the object to be stirred S become the stirring shaft 3. When moving from the side (center of rotation) to the outside in the radial direction of rotation, that is, in the direction away from the stirring shaft 3, there are a plurality of rod-shaped members 42 extending in the direction intersecting the moving direction of the bubbles. , The bubbles are struck by the rod-shaped member 42 in the middle of the movement and burst, and become smaller bubbles. By repeating such movement of bubbles in the direction away from the stirring shaft 3 and bubble breaking by the rod-shaped member 42, the bubbles in the object to be agitated S can be kept away from the stirring shaft 3 while being miniaturized. Move to the upper side (second unit 4B side).

In particular, in the first unit 4A of the stirring device 1, as described above, as all of the plurality of rod-shaped members 42 arranged on one first supporting member 41 move away from the stirring shaft 3 (of the supporting member 41). Since the extension length 42L is gradually shortened (toward the tip), the effect of reducing the bubbles in the agitated object S as the distance from the agitation shaft 3 described above is particularly excellent, and therefore, the agitated object is excellent. The defoaming effect of S is excellent, and the effect of reducing the load on the rotating device 5 (driving source for stirring) as compared with the conventional technique can be expected.

Further, the second unit 4B has substantially the same basic structure as the first unit 4A except that the second support member 44 on which the rod-shaped member 45 is arranged extends horizontally, and the first unit 4A described above is substantially the same. The defoaming mechanism can be effectively performed in the same manner as the defoaming mechanism in.

The bubbles in the agitated object S, which were miniaturized by the defoaming caused by the rotation of the second unit 4B and kept away from the agitating shaft 3, finally surfaced at the interface (liquid level) between the agitated object S and the air. Then it bursts and disappears there. As described above, the stirring device 1 is excellent in the defoaming effect of the agitated object S and can effectively reduce the amount of bubbles in the agitated object S, so that the agitated object becomes bubbles, which has been a problem in the past. It is possible to effectively prevent the inconvenience of flowing out from the stirring tank.

From the viewpoint of more reliably achieving the defoaming effect described above, the rod-shaped member 42 of the first support member 41 is preferably thicker than the rod-shaped member 45 of the second support member 44. Considering this point, with respect to the delivery lengths 42R and 45R in the direction orthogonal to the longitudinal direction of the rod-shaped members 42 and 45, which is an index of the thickness of the rod-shaped members 42 and 45, the delivery length 42R of the rod-shaped members 42 (FIG. 3) and the delivery length 45R of the rod-shaped member 45 (see FIG. 4) are 42R / 45R, preferably 2 to 5 and more preferably 1 to 10 on the premise of a magnitude relationship of 42R> 45R. be.

From the viewpoint of ensuring that the above-mentioned action and effect are exhibited more reliably, it is preferable to set the dimensions and the like of each part of the stirring device 1 as follows.
The delivery length 42R (see FIG. 3) of the rod-shaped member 42 of the first unit 4A is preferably 3 to 10 mm, more preferably 10 to 20 mm.
The delivery length 45R (see FIG. 4) of the rod-shaped member 45 of the second unit 4B is preferably 5 to 15 mm, more preferably 15 to 30 mm.
The delivery lengths 42R and 45R are "diameters" when the cross-sectional view shape along the direction orthogonal to the axial direction of the rod-shaped members 42 and 45 is circular, and the cross-sectional view shape is an anisotropic shape. When there are multiple delivery lengths, it means "maximum delivery length".

The pitch 42Px (see FIG. 2) of the rod-shaped member 42 in the longitudinal direction X1 of the first support member 41 is preferably 10 to 30 mm, more preferably 5 to 10 mm.
The pitch 42Py (see FIG. 2) of the rod-shaped member 42 in the width direction Y1 of the first support member 41 is preferably 10 to 30 mm, more preferably 5 to 10 mm.
The pitch 45Px (see FIG. 2) of the rod-shaped member 45 in the longitudinal direction X2 of the second support member 44 is preferably 10 to 30 mm, more preferably 5 to 10 mm.
The pitch 45Py (see FIG. 2) of the rod-shaped member 45 in the width direction Y2 of the second support member 44 is preferably 10 to 30 mm, more preferably 5 to 10 mm.
Regarding the pitches 42Px and 42Py of the rod-shaped member 42 of one first support member 41, if the arrangement pattern of the rod-shaped member 42 is the same among the plurality of first support members 41 constituting the first unit 4A, It may be an even pitch or an uneven pitch. Similarly, with respect to the pitches 45Px and 45Py of the rod-shaped members 45 of one second support member 44, if the arrangement pattern of the rod-shaped members 45 is the same among the plurality of second support members 44 constituting the second unit 4B. , It may be a uniform pitch or an uneven pitch.

The extension length 42L (see FIG. 3) of the rod-shaped member 42 from the first support member 41 is preferably 5 to 10 mm, more preferably 10 to 200 mm.
The extension length 45L (see FIG. 4) of the rod-shaped member 45 from the second support member 44 is preferably 5 to 10 mm, more preferably 10 to 200 mm.
In the illustrated form, the extending length 42L of the rod-shaped member 42 is the same as the length in the longitudinal direction of the rod-shaped member 42, and the extending length 45L of the rod-shaped member 45 is the length of the rod-shaped member 45. Same as directional length.

In the first unit 4A, the ratio of the extension length between the rod-shaped member 42 having the longest extension length 42L (the longest rod-shaped member) and the rod-shaped member 42 having the shortest extension length 42L (the shortest rod-shaped member) is the longest. The rod-shaped member / shortest rod-shaped member is preferably 2 to 5, more preferably 1 to 10. In the illustrated embodiment, the shortest rod-shaped member is the rod-shaped member 42 farthest from the stirring shaft 3, and the longest rod-shaped member is the rod-shaped member 42 closest to the stirring shaft 3.
The number of rod-shaped members 42 arranged in one first support member 41 is preferably 15 to 24, more preferably 24 to 72.

In the second unit 4B, the ratio of the extension length between the rod-shaped member 45 having the longest extension length 45L (the longest rod-shaped member) and the rod-shaped member 45 having the shortest extension length 45L (the shortest rod-shaped member) is the longest. The rod-shaped member / shortest rod-shaped member is preferably 2 to 5, more preferably 1 to 10. In the illustrated embodiment, the shortest rod-shaped member is the rod-shaped member 45 farthest from the stirring shaft 3, and the longest rod-shaped member is the rod-shaped member 45 closest to the stirring shaft 3.
The number of rod-shaped members 45 arranged in one second support member 44 is preferably 15 to 24, more preferably 24 to 72.

The cross-sectional view shape along the direction orthogonal to the longitudinal direction of the rod-shaped members 42 and 45 is not particularly limited, and may be an isotropic shape such as a circular shape or an anisotropic shape such as a rectangular shape.
Further, from the viewpoint of reducing the load on the stirring drive source, it is preferable that the longitudinal end portions of the rod-shaped members 42 and 45 have a tapered shape, that is, a shape in which the diameter gradually decreases toward the tip.

The inclination angle θva (see FIG. 2) of the first support member 41 with respect to the vertical direction Z is preferably 0 to 360 degrees, more preferably 15 to 137 degrees.
The inclination angle θha (see FIG. 2) of the first support member 41 with respect to the horizontal direction is preferably 0 to 360 degrees, more preferably 15 to 137 degrees.
The inclination angle θvb (see FIG. 3) of the second support member 44 with respect to the vertical direction Z is preferably 0 to 360 degrees, more preferably 15 to 137 degrees.

The thickness 41T (see FIG. 3) of the first support member 41 is preferably 5 to 10 mm, more preferably 1 to 3 mm.
The thickness 44T (see FIG. 4) of the second support member 44 is preferably 5 to 10 mm, more preferably 1 to 3 mm.
The materials of the first support member 41, the second support member 44, and the rod-shaped members 42, 45 are not particularly limited, and can be appropriately selected from a metal such as stainless steel, a synthetic resin, or the like according to the type and physical properties of the agitated object S. Just do it.

Further, in the stirring device 1, the mounting position of the stirring blades 4 (first unit 4A and second unit 4B) on the stirring shaft 3 is not particularly limited, but the two-stage bubble breaking effect by both units 4A and 4B is further improved. As shown in FIG. 1, the first unit 4A is attached to the lower end of the stirring shaft 3 so as to be located near the bottom of the stirring tank 2, and the second unit 4B is attached to the agitated object S. It is preferable to attach it to the stirring shaft 3 so that it is located near the interface (liquid level) with air. For example, a plurality of second units 4B are provided in a state in which the agitated object S is housed inside the agitation tank 2 and the agitation shaft 3 is not rotating (a state in which the interface between the agitated object S and the air is not rippling). The longitudinal end of the rod-shaped member 45 (the longest rod-shaped member in the present embodiment) closest to the stirring shaft 3 among the rod-shaped members 45 of the above is in the vicinity of the interface, for example, preferably within 100 mm in the vertical direction Z from the interface. More preferably, it is located within 10 mm. From the same viewpoint, the stirring blade 4 is accommodated in the separation distance between the two units 4A and 4B, more specifically, the separation distance between the fixture 43 of the first unit 4A and the fixture 46 of the second unit 4B. Although it depends on the internal depth of the stirring tank 2, it is generally preferably 200 to 400 mm, more preferably 400 to 600 mm.

The present invention is not limited to the above-described embodiment, and can be appropriately modified without departing from the spirit of the present invention.
For example, in the first supporting member 41, rod member one row of which consisting of a plurality of bar-like members 42 which are intermittently arranged in the longitudinal direction X1 is the had formed only heterogeneous rod-like member group, rod-shaped Only a part of the plurality of rod-shaped members 42 constituting the member row may be the non-uniform rod-shaped member group. This also applies to the plurality of rod-shaped members 45 of the second support member 44.
Further, the angle formed by each of the first support member 41 and the second support member 44 and the stirring shaft 3 may be adjustable. For example, even if both support members 41 and 44 are rotated 360 degrees, respectively. good. In that case, for example, the angle formed by the first support member 41 and the stirring shaft 3 is adjusted to an angle other than 90 degrees, and the extending direction of the first support member 41 is a direction other than the horizontal direction, specifically, for example. It may extend diagonally downward in the direction away from the stirring shaft 3.

1 Stirrer 2 Stirrer 3 Stirrer shaft 4 Stirrer blade 4A 1st unit 41 1st support member (tilt support member)
42 Rod-shaped member 43 Fixture 43A Stirring shaft insertion part 4B 2nd unit 44 2nd support member (horizontal support member)
45 Rod-shaped member 46 Fixture 46A Stirring shaft insertion part 5 Rotating device S Stirred object

Claims (5)

A stirring blade attached to a stirring shaft that is rotatably installed inside the stirring tank.
A first unit attached to the stirring shaft and a second unit attached to the stirring shaft at a position separated from the mounting position of the first unit by a predetermined distance are provided.
In a state of being attached to the stirring shaft, the first unit has a first support member extending diagonally upward in a direction away from the stirring shaft, and from the first support member to the front side in the rotation direction of the stirring shaft. Equipped with a plurality of extending rod-shaped members,
When the second unit is attached to the stirring shaft, the second support member extends from the stirring shaft in a direction intersecting the axial direction of the stirring shaft, and the rotation direction of the stirring shaft from the second support member. A stirring blade including a plurality of rod-shaped members extending to the front side. In at least one of the first support member and the second support member, the plurality of rod-shaped members include a non-uniform rod-shaped member group composed of a plurality of the rod-shaped members having different extension lengths from the support members. The stirring blade according to claim 1, wherein the plurality of rod-shaped members of the non-uniform rod-shaped member group are arranged on the support member so that the extending length gradually becomes shorter as the distance from the stirring shaft increases. The stirring blade according to claim 1 or 2, wherein the rod-shaped member of the first support member is thicker than the rod-shaped member of the second support member. A stirrer including a stirrer shaft that can be attached to and detached from the rotating device and a stirrer blade attached to the stirrer shaft.
A stirrer in which the stirring blade is the stirring blade according to any one of claims 1 to 3. A stirring device including a stirring tank in which an object to be agitated is housed, a stirring shaft rotatably installed inside the stirring tank, and a stirring blade attached to the stirring shaft.
A stirring device in which the stirring blade is the stirring blade according to any one of claims 1 to 3.

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