JP2010089017A - Device for installing underwater mixer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a thrust force generated by an underwater mixer to be surely received without fixing a guide support for installing the underwater mixer, onto a tank bottom. <P>SOLUTION: An upper part of a guide bar 10 vertically movably supporting the underwater mixer 20 is freely rotatably supported by a support shaft bolt 31. A roller 11 is disposed on the lower end part of the guide bar 10 and is allowed to abut on the tank bottom P2 in a state where the guide bar 10 is inclined by about 20°. A thrust force F0 exerted on the guide bar 10 by the underwater mixer 20 is received by such a force F0×cotθ that the tank bottom P2 raises the guide bar 10 and such a force F0/sinθ that a support shaft bolt 31 compresses the guide bar 10. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an underwater mixer installation device that installs an underwater mixer that stirs stored water or the like in a water tank.

  Conventionally, in aquariums such as sewage treatment plants, reservoirs in various factories, ponds and lakes, ponds, and fish farms, an underwater mixer (underwater propeller stirring) It is known that the stored water is agitated by the operation of this submerged mixer. For example, the agitation of the retained water prevents sludge sedimentation at the sewage treatment plant and the destruction of floating scum. It is possible to prevent stagnation. The underwater mixer includes a plurality of stirring blades integrally provided on the boss portion, and a motor having an output shaft directly connected to the boss portion, and a swirling flow is generated in the stored water by the rotation of the stirring blade driven by the motor. It is supposed to be generated.

  In order to lower the above-described underwater mixer from the upper part of the water tank (the above-ground part) and install it in the water tank, an installation device having a guide bar is used. The guide bar needs to receive a thrust force during operation of the mixer so that an excessive moment is not generated. Therefore, the guide bar is usually fixed by anchor bolts at two or more locations such as the underwater part and the upper part of the water.

  In this type of installation equipment, in order to install anchor bolts in the underwater part, when installing in an existing aquarium, drainage of the aquarium is required, and costs for drainage and water injection are incurred. There is a problem in that it is necessary to stop the entire process such as water treatment using water.

  In order to avoid the above problems, it is possible to fix only the upper part of the water with anchor bolts. However, if a large moment is applied to the guide bar due to the thrust force of the submersible mixer, the guide bar is large and sturdy. (For example, a guide bar having an increased thickness or a guide bar having a truss structure on the upper part thereof is required, and the installation depth is restricted.

  There is also a method to install the underwater mixer so that it is fixed to the bottom of the tank by its own weight without using anchor bolts, but it can only be applied to an underwater mixer with a small thrust force that can withstand the frictional force caused by its own weight. .

Therefore, a technique has been proposed in which the vicinity of the lower end of the underwater portion of the guide bar is brought into contact with the wall surface of the water tank so as to receive the thrust force from the mixer (see, for example, Patent Document 1).
Japanese Unexamined Patent Publication No. 2000-167375 (FIGS. 1, 5, and 6)

  However, the structure that receives the thrust force from the underwater mixer on the wall surface of the water tank as described above has the following problems.

  First, it is not applicable when the tank wall surface is not near the back.

  Moreover, since an excessive moment will generate | occur | produce if the contact to a tank wall surface is incomplete, it is difficult to improve reliability.

  Furthermore, there is a possibility that the installation apparatus collides with the tank wall surface at the moment when the underwater mixer is activated, or the tank wall surface is scraped because the contact portion increases and causes a partial collision, which may cause damage to the tank wall.

  Moreover, the thrust force can be received on the tank wall surface only when the direction of the underwater mixer is substantially perpendicular to the wall surface.

  The present invention has been made in view of the above points, and it is possible to install guide struts for installing the underwater mixer in the water tank without emptying the water tank. An object of the present invention is to provide an underwater mixer installation device that can reliably receive a thrust force.

To solve the above problem,
The invention of claim 1
An underwater mixer installation device for installing an underwater mixer in a water tank,
A fixed part installed in the upper part of the water tank;
A guide column whose upper part is connected to the fixed part and guides and supports the submerged mixer to the installation position;
With
The guide strut has a bottom portion that bottoms on the bottom of the water tank, and when a thrust force is applied by an underwater mixer, the guide strut rotates about a predetermined rotation axis, or the fixed portion. And the force of the direction which presses the tank bottom of a water tank acts by the deflection | deviation of a guide support | pillar is characterized by the above-mentioned.

  Thereby, if the force of the direction which the said bottom part presses the tank bottom of a water tank acts, the reaction force will act on a guide support | pillar from a tank bottom. Therefore, even if the lower end of the guide column is not fixed to the tank bottom by an anchor bolt or the like, the thrust force from the underwater mixer can be reliably received.

The invention of claim 2
The underwater mixer installation device according to claim 1,
The bottoming portion is characterized in that it bottoms on the tank bottom at a position closer to the discharge direction of the underwater mixer than a vertically lower position of the upper end portion of the guide column.

The invention of claim 3
An underwater mixer installation device according to claim 2,
The guide column is installed to be inclined with respect to the vertical direction.

The invention of claim 4
An underwater mixer installation device according to claim 2,
The guide column is installed in the vertical direction, and has a leg portion that protrudes to the discharge direction side of the underwater mixer at the lower portion of the guide column, and the bottom portion is provided at the tip of the leg portion. It is characterized by.

The invention of claim 5
The underwater mixer installation device according to claim 1,
The guide column is pivotally supported around the rotation axis with respect to the fixed part,
The bottoming portion bottoms the tank bottom at a position closer to the discharge direction of the underwater mixer than a position vertically below the rotation shaft.

The invention of claim 6
The underwater mixer installation device according to claim 1,
The fixed portion and the guide column are configured to bend to cause the bottom portion to move in a direction of biting into the tank bottom when a thrust force is applied by an underwater mixer.

  Accordingly, it is possible to easily and reliably apply a force in a direction in which the bottom portion presses the tank bottom of the water tank due to a balance between the force and the moment acting on the guide column. Therefore, as described above, it is easy to reliably receive the thrust force from the underwater mixer using the reaction force from the tank bottom.

The invention of claim 7
The underwater mixer installation device according to any one of claims 1 to 6,
The bottom portion includes a roller provided at a lower portion of the guide column so as to be rotatable about a rotation axis in a direction parallel to or perpendicular to a blowing direction of the submerged mixer.

The invention of claim 8
The underwater mixer installation device according to any one of claims 1 to 6,
The bottom portion has a contact member that is supported so as to be rotatable about a predetermined rotation axis or swingable in a spherical direction and to contact the tank bottom.

  With these, for example, after lowering the guide column vertically during construction, the lower end can be moved to the position of the underwater mixer discharge direction side, or the guide column and the underwater mixer can be rotated about the vertical axis. Easy to do. When a contact member is provided, in addition to the reaction force in the direction in which the tank bottom pushes up the guide column, the frictional force between the contact member and the tank bottom can also act as a drag against the thrust force of the underwater mixer. it can.

  According to the present invention, the guide strut has a bottom portion that bottoms the bottom of the water tank, and when thrust force is exerted by the underwater mixer, the guide strut rotates about a predetermined rotation axis. Alternatively, the deflection of the fixed part and the guide column causes a force in the direction in which the bottom part presses the tank bottom of the water tank, so even if the lower part of the guide column is not fixed by an anchor bolt or the like, the reaction force from the tank bottom The thrust force can be received with certainty. Therefore, it is possible to easily install guide struts for installing the underwater mixer in the water tank without emptying the water tank.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each of the following embodiments, components having functions similar to those of the other embodiments are denoted by the same reference numerals and description thereof is omitted.

(Embodiment 1)
FIG. 1 shows the overall structure of an underwater mixer installation apparatus according to Embodiment 1 of the present invention, and P is a water tank, for example, a sewage treatment plant, a water storage in various factories, a pond lake water, a salmon, a fish farm, or the like. From the floor surface P1 around the water tank P to the tank bottom P2, a guide bar 10 (guide support column) is provided, for example, inclined at about 20 °.

  An underwater mixer 20 is supported on the guide bar 10 so as to be movable up and down. As shown in FIG. 2, the underwater mixer 20 has a plurality of (for example, three) stirring blades 22 provided integrally with the boss portion 21, and an output shaft (not shown) on the boss portion 21. An electric motor 23 that is directly connected, and a tapered tapered guide plate 24 that is fixedly supported by the housing of the motor 23 and disposed around the stirring blades 22... A swirl flow is generated in the stored water by rotation.

  A slide member 25 for supporting the submerged mixer 20 on the guide bar 10 so as to be movable up and down is integrally attached and fixed to the rear end of the housing of the motor 23. The slide member 25 includes a U-shaped slide member main body 26 fitted from the front side (right side in FIG. 2) so as to surround the guide bar 10, and the slide member main body 26 is provided with a motor 23 at the front plate portion. It is fixedly attached to the rear end of the housing. A resin sliding contact plate 27 slidably contacting the front surface of the guide bar 10 is attached and fixed to the rear surface (inner surface) of the front plate portion of the slide member body 26. On the other hand, at the upper and lower end positions of the rear end portion (front end portion) of the left and right side plate portions, two pairs of guide rollers 28 that rotate in contact with the rear surface of the guide bar 10 are rotated at positions facing each other in the left-right direction. It is supported freely. That is, the guide bar 10 is fitted into the slide member body 26 so that the resin sliding contact plate 27 contacts the front surface of the guide bar 10 and the guide rollers 28 contact the rear surface of the guide bar 10. As described above, the slide member 25 and the underwater mixer 20 are supported so that they can be moved up and down along the guide bar 10.

  A roller 11 (bottomed portion) having a rotation axis in a direction perpendicular to the paper surface of FIG. 2 is provided at the lower end portion of the guide bar 10, and the lower end portion of the guide bar 10 can be easily moved in the left-right direction in FIG. It is like that. More specifically, a bracket 10a projecting downward is provided at the lower end portion of the guide bar 10, and the roller 11 is rotatably supported by a spindle bolt 11a attached to the bracket 10a.

  As shown in FIGS. 3 and 4, the upper portion of the guide bar 10 is rotatably supported by a spindle bolt 31 provided on the fixed portion 30. More specifically, the fixing portion 30 includes a base plate 33 fixed to the floor surface P1 around the water tank P with bolts 32, a pedestal plate 34 provided integrally with the base plate 33, and a bolt 35 to the pedestal plate 34. It consists of a fixed pair of brackets 36. A female screw 34a into which the bolt 35 is screwed is formed in the pedestal plate 34 at a position where the circumference is divided into 18 equal parts. For example, as shown in FIG. 5, the bracket 36 is rotated by 20 ° in a horizontal plane. It can be fixed to. The bracket 36 has a hole 36a through which the support bolt 31 is inserted.

  On the other hand, a mounting plate 12 having a reinforcing plate 12a is provided on the upper portion of the guide bar 10, and the shaft bolt 31 is inserted into a hole 12b formed in the mounting plate 12, so that the guide bar 10 is a vertical plane. It is supported so that it can be rotated within. Moreover, the nut 13 is provided in the edge part of the attachment board 12, and the roller 11 of the lower end part of the guide bar 10 is reliably pressed against the tank bottom P2 according to the depth of the water tank P by screwing the push bolt 14. Can be touched. Here, the push bolt 14 as described above is not necessarily provided. However, when the push bolt 14 is provided, when the underwater mixer 20 is started in a state where there is a gap between the roller 11 and the tank bottom P2, the roller is provided. It is possible to easily prevent 11 from colliding with the tank bottom P2 and damaging the tank bottom P2 or damaging the roller 11. In addition, it may replace with the push bolt 14 or may provide the spring which acts on the urging | biasing force of the direction which presses the roller 11 against the tank bottom P2 with the push bolt 14. Specifically, for example, a coil spring may be provided between the nut 13 and the pedestal plate 34, or between a spring seat provided in place of the nut 13 and the pedestal plate 34.

  Although the method of installing the underwater mixer 20 with the above-described underwater mixer installation device is not particularly limited, for example, it can be applied as follows. That is, first, the guide bar 10 is made substantially vertical and lowered toward the tank bottom P2, and then the roller 11 is rolled away from the wall surface of the water tank P to incline the guide bar 10. When the guide bar 10 reaches a predetermined inclination angle, the support bolt 31 is inserted into the hole 36 a of the bracket 36 and the hole 12 b of the mounting plate 12 in the guide bar 10, so that the guide bar 10 can be rotated to the bracket 36. After fixing, the push bolt 14 is screwed into the nut 13 to make it difficult for the roller 11 to be separated from the tank bottom P2. Next, the guide bar 10 is fitted and inserted into the slide member main body 26 of the underwater mixer 20, and the underwater mixer 20 is lowered to the installation position along the guide bar 10 while being suspended by a hanging tool (not shown).

  When the underwater mixer 20 installed by the above-described underwater mixer installation device is operated, a thrust force (thrust) in the direction opposite to the water flow generated by the underwater mixer 20 acts on the guide bar 10. This thrust force balances with the force with which the tank bottom P <b> 2 pushes up the roller 11 and the force with which the spindle bolt 31 of the fixed portion 30 acts on the guide bar 10. More specifically, for example, if the angle formed by the guide bar 10 and the vertical line is θ and the thrust force F0 acts on the lowermost end of the guide bar 10 for the sake of simplicity, the tank bar P2 to the guide bar 10 is large. A push-up force of F0 × cot θ acts. Moreover, the force which compresses the guide bar 10 of magnitude | size F0 / sin (theta) acts from the spindle bolt 31 of the fixing | fixed part 30 to the guide bar 10, and these force balances irrespective of the magnitude | size of thrust force. . Therefore, the lower end portion of the guide bar 10 is not fixed with an anchor bolt, and the light guide bar 10 or the case where the wall surface of the water tank P is not located near the underwater mixer 20 or the direction of the thrust force and the wall surface Even when the direction of the normal is different, the thrust force from the underwater mixer 20 can be reliably received.

  Furthermore, according to the configuration of the first embodiment, for example, as shown in the following (Table 1), only the upper portion of the guide bar 10 is fixed, and the thrust force is generated by a strong cantilever beam using a truss structure or the like. Compared to the case of receiving, it is possible to easily increase the thrust force that can be received while reducing the weight and manufacturing cost, that is, to increase the output of the applicable underwater mixer or deepen the installation depth It becomes. Further, for example, the weight of the installation device is much larger than the case where the underwater mixer 20 provided with rubber feet or the like on the bottom surface is placed on the tank bottom P2 and receives thrust force by its own weight and frictional force. An output underwater mixer can be used.

(Modification of Embodiment 1)
Instead of the roller 11 having the rotation axis in the direction perpendicular to the paper surface of FIG. 2 as described above, the direction parallel to the output shaft of the motor 23 as shown in FIGS. 6 and 7 (the direction parallel to the paper surface of FIG. 6). The roller 41 having a rotation axis in a direction perpendicular to the paper surface of FIG. 7 may be used. In this case, it may be relatively difficult to move the lower end portion of the guide bar 10 in the direction away from the wall surface of the water tank P during construction. On the other hand, from the state shown in FIG. The guide bar 10 and the underwater mixer 20 can be easily rotated around the axis in the vertical direction so that the state shown in FIG.

  Further, in place of the roller 11 and the roller 41, as shown in FIGS. 8 and 9, a contact member 42 that contacts the tank bottom P2 may be provided. In this case, the frictional force between the tank bottom P2 and the contact member 42 can also act as a resistance against the thrust force of the underwater mixer 20. The contact member 42 as described above is composed of a ground plate 42a, a bracket 42b erected on this 42a, and a reinforcing plate 42c that connects both, as shown in FIG. You may make it support so that rotation is possible. Further, the contact member 42 may be provided so as to be swingable in the spherical surface direction using a spherical joint or the like. On the other hand, as shown in FIG. 10, a cylindrical or spherical contact plate 44 may be fixedly provided on the guide bar 10 by a reinforcing plate 44a or the like. Accordingly, the lower end portion of the guide bar 10 can be easily brought into close contact with the tank bottom P2 regardless of the inclination angle of the guide bar 10 or the gradient of the tank bottom P2.

(Embodiment 2)
The guide bar 10 is not inclined and provided as in the first embodiment. For example, as shown in FIG. 11, the guide bar 10 is provided in the vertical or substantially vertical direction, and an underwater mixer is provided below the guide bar 10. Leg portions 51 may be provided to project toward the direction of water discharge by 20. A contact member 42 as described in the modification of the first embodiment (FIGS. 8 and 9) is provided at the tip of the leg 51. Such a configuration can be applied when the guide bar 10 needs to be provided in a vertical direction or when the underwater mixer 20 needs to be brought close to the wall surface of the water tank P. Moreover, if the guide bar 10 is substantially vertical, the underwater mixer 20 can be lifted relatively easily.

  Even in the above-described underwater mixer installation device, the position of the acting point of the thrust force by the underwater mixer 20 is different from that of the first embodiment, but basically, the contact member 42 is located with respect to the vertically lower position of the support bolt 31. By contacting the tank bottom P2 at a position on the water flow direction side of the submersible mixer 20, the tank bottom P2 acts on the guide bar 10 from the support bolt 31 of the fixed portion 30 and a force for pushing up the contact member 42. The thrust force from the underwater mixer 20 can be received by the force as in the first embodiment. Therefore, it is not necessary to fix the lower part of the guide bar 10 to the tank bottom P2 with the anchor bolt.

  The tip of the leg 51 is not limited to the contact member 42 as described above, but may be provided with the same roller 11 as described in the first embodiment as shown in FIG. Further, as described in the modification of the first embodiment (FIGS. 6, 7, and 10), the roller 41 having a rotation axis in a direction parallel to the output shaft of the motor 23, or a cylindrical or spherical contact plate 44 may be provided.

  Further, the guide bar 10 is not limited to be provided vertically, and the guide bar 10 may be inclined to some extent as in the first embodiment, and the leg portion 51 may be provided as in the second embodiment.

(Embodiment 3)
As shown in FIG. 13, the guide bar 10 is not only rotatably supported by the support bolt 31 as in the first and second embodiments, but is fixed to the floor surface P <b> 1 and protrudes toward the inside of the water tank P. The beam member 61 may be provided, and the vertical guide bar 10 may be attached to the tip of the beam member 61, for example. Further, if necessary, a brace 62 may be provided as shown by a two-dot chain line in FIG. That is, the rigidity and dimensional specifications of the beam member 61 and the guide bar 10 are such that when the thrust force from the underwater mixer is applied, the lower end of the guide bar 10 is deflected to move in the direction of biting into the tank bottom P2. And so on, the bottom of the guide bar 10 is not fixed to the tank bottom P2 with anchor bolts, and the tank bottom P2 uses the force to push up the guide bar 10 to use the underwater mixer. The thrust force by 20 can be balanced.

  In addition, while providing the beam member 61 as described above, the guide bar 10 is further inclined, and the upper portion of the guide bar 10 is inclined to the floor surface P1 (or floor) while the guide bar 10 is inclined similarly to the first embodiment. It may be fixedly attached to a fixing part or the like fixed to the surface P1. That is, it is only necessary that the lower end portion or the like of the guide bar 10 is surely brought into contact with the tank bottom P2 and can receive the thrust force from the underwater mixer 20 using the reaction force from the tank bottom P2.

(Embodiment 4)
In the first embodiment, the example in which the guide bar 10 is integrally provided on the mounting plate 12 that is rotatably supported by the support shaft bolt 31 has been described. The bar 10 may be slidably provided. Specifically, for example, as shown in FIG. 14, a slide member 71 is attached to the attachment plate 12 that is rotatably supported by the spindle bolt 31. Similar to the slide member 25 provided in the underwater mixer 20, the slide member 71 contacts the U-shaped slide member main body 72, a resin sliding contact plate 73 that is in sliding contact with the guide bar 10, and the guide bar 10. And a guide roller 74 that rolls to support the guide bar 10 in a slidable manner. Further, the guide bar 10 can be fixed to the slide member 71 by a fixing bolt 75 after the sliding position is set.

  In the case of such a configuration, the actual length of the guide bar 10 is adjusted, for example, the inclination angle of the guide bar 10 is set, or the inclination angle of the guide bar 10 regardless of the depth of the water tank P. Can be easily set to a predetermined value. In addition, since the guide bar 10 can be lowered while being slid with respect to the slide member 71 after the attachment plate 12 is attached to the bracket 36 with the support bolt 31, the workability can be easily improved.

(Other variations)
In Embodiment 1 etc., the example which rotates the guide bar 10 and the underwater mixer 20 around the axis | shaft of a perpendicular direction by changing the position which attaches the bracket 36 to the base plate 34 was shown, but it does not restrict to this. For example, the guide bar 10 and the underwater mixer 20 may be rotated without reassembling the bracket 36 by, for example, supporting the bracket 36 so as to be rotatable about an axis in the vertical direction.

  Moreover, although the fixing | fixed part 30 showed the example fixed to the floor surface P1, you may fix to the wall surface of not only this but the water tank P.

  In addition, the constituent elements described in the above embodiments and modifications may be variously combined within a logically possible range. Specifically, for example, the structure (FIGS. 6 to 10) of the lower end portion of the guide bar 10 described in the modification of the first embodiment is applied to the configuration of the third embodiment (FIG. 13) or the second embodiment. The described leg portion 51 (FIG. 11) may be combined with the configuration of the third embodiment (FIG. 13).

  The underwater mixer installation device according to the present invention is useful as an underwater mixer installation device or the like in which an underwater mixer that stirs stored water or the like is installed in a water tank.

It is a side view which shows the whole structure of the underwater mixer installation apparatus which concerns on Embodiment 1 of this invention. 2 is a side view showing a structure of a lower part of a guide bar 10 and an underwater mixer 20. FIG. 3 is a side view showing a support structure of an upper portion of the guide bar 10. FIG. 3 is a plan view showing a support structure of an upper portion of the guide bar 10. FIG. It is a top view which shows the support structure of the upper part of the guide bar 10 at the time of making the attachment angle of the bracket 36 differ. 6 is a side view showing a modification of the lower part of the guide bar 10. FIG. FIG. 6 is a front view showing a modified example of the lower part of the guide bar 10. It is a side view which shows the other modification of the lower part of the guide bar. It is a front view which shows the other modification of the lower part of the guide bar. FIG. 10 is a side view showing still another modified example of the lower part of the guide bar 10. FIG. 3 is a view corresponding to FIG. It is a side view which shows the modification of the lower part of the guide bar 10 of Embodiment 2. FIG. FIG. 6 is a view corresponding to FIG. FIG. 6 is a view corresponding to FIG.

Explanation of symbols

P1 floor
P2 tank bottom
10 Guide bar
10a Bracket
11 Laura
11a Spindle bolt
12 Mounting plate
12a Reinforcing plate
12b hole
13 Nut
14 Push bolt
20 Underwater mixer
21 Boss
22 Stirring blade
23 Electric motor
24 Information board
25 Slide member
26 Slide member body
27 Resin sliding plate
28 Guide roller
30 fixed part
31 Support bolt
32 volts
33 Base plate
34 Pedestal plate
34a Female thread
35 volts
36 Bracket
36a hole
41 Laura
42 Contact member
42a Grounding plate
42b Bracket
42c Reinforcing plate
43 Spindle bolt
44 Contact plate
44a Reinforcing plate
51 legs
61 Beam members
62 Bracing
71 Slide member
72 Slide body
73 Resin sliding plate
74 Guide roller
75 Fixing bolt

Claims (8)

An underwater mixer installation device for installing an underwater mixer in a water tank,
A fixed part installed in the upper part of the water tank;
A guide column whose upper part is connected to the fixed part and guides and supports the submerged mixer to the installation position;
With
The guide strut has a bottom portion that bottoms on the bottom of the water tank, and when a thrust force is applied by an underwater mixer, the guide strut rotates about a predetermined rotation axis, or the fixed portion. And an underwater mixer installation device characterized in that a force in a direction of pressing the bottom of the water tank acts by the deflection of the guide column. The underwater mixer installation device according to claim 1,
The underwater mixer installation device, wherein the bottoming portion is attached to the bottom of the tank at a position closer to a discharge direction of the underwater mixer than a vertically lower position of an upper end portion of the guide column. An underwater mixer installation device according to claim 2,
The submerged mixer installation device, wherein the guide column is installed to be inclined with respect to a vertical direction. An underwater mixer installation device according to claim 2,
The guide column is installed in the vertical direction, and has a leg portion that protrudes to the discharge direction side of the underwater mixer at the lower portion of the guide column, and the bottom portion is provided at the tip of the leg portion. An underwater mixer installation device. The underwater mixer installation device according to claim 1,
The guide column is pivotally supported around the rotation axis with respect to the fixed part,
The underwater mixer installation device, wherein the bottoming portion is attached to the bottom of the tank at a position closer to a discharge direction of the underwater mixer than a position vertically below the rotation shaft. The underwater mixer installation device according to claim 1,
The submerged mixer installation characterized in that the fixed part and the guide column are configured to cause a deflection in which the bottom part moves in a direction to bite into the tank bottom when a thrust force is applied by the submerged mixer. apparatus. The underwater mixer installation device according to any one of claims 1 to 6,
The underwater mixer installation device, wherein the bottom portion has a roller provided at a lower portion of the guide column so as to be rotatable about a rotation axis in a direction parallel to or perpendicular to a blowing direction of the underwater mixer. The underwater mixer installation device according to any one of claims 1 to 6,
The underwater mixer installation device, wherein the bottoming portion has a contact member that is supported so as to be rotatable about a predetermined rotation axis or swingable in a spherical direction and to contact the tank bottom.

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