JP2005081240A - Device of installing underwater stirrer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small-sized installation device which installs an underwater stirrer in a sewage treatment tank and which makes lifting posts for moving the stirrer from the outside of the tank to a predetermined position unnecessary. <P>SOLUTION: The installation device 1 is provided with: first horizontal beams 4 laid from one side wall 3A to the other side wall 3B of the sewage tank 3; second horizontal beams 5 crossing with the first beams 4; supporting posts extending downward from the first and second beams 4, 5; and a supporting base provided at the lower end part of the posts. Guide rails with a cross section of a recessed type are formed on the first beams 4. A simple crane 30 loaded with the underwater stirrer travels on the guide rails to move the stirrer from the outside of the tank to a point directly above the installation position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an apparatus for installing an underwater agitator.

  Conventionally, in a sewage treatment plant, a water storage, etc., for biological treatment such as oxidation ditch, an underwater agitator such as an underwater mixer is installed in a water tank, and sewage is agitated or conveyed by the underwater agitator. While purifying while being done.

  By the way, since the underwater agitator is heavy, it is not easy to install the underwater agitator. Conventionally, in order to install the underwater agitator in the aquarium, a lifting column is installed outside the aquarium, and the underwater agitator is moved to a position just above the installation position using this lifting column. (For example, refer to Patent Document 1).

  An example of a conventional installation apparatus will be described with reference to FIG. The installation apparatus 100 includes a fixed support 105 extending vertically in the water tank, fixing brackets 103 and 104 for fixing the fixed support 105 to the bottom wall 101 and the side wall 102 of the water tank, and a lifting fixed to the water tank by the fixing metal 104. The support 125 is provided. The lifting column 125 is provided with a moving chain 126. When installing the underwater mixer 110, first, the underwater mixer 110 is moved to the standby position 130 outside the water tank by a crane or the like. Thereafter, the lifting column 125 is rotated in the direction of the standby position 130, and the moving chain 126 is hooked on the underwater mixer 110. Then, the lifting column 125 is rotated to the water tank side, and the underwater mixer 110 is moved from a position 130 outside the water tank to a position directly above the fixed column 105. When the underwater mixer 110 moves to a position directly above the fixed column 105, the support portion 106 of the underwater mixer 110 is engaged with the fixed column 105, and the moving chain 126 is removed from the underwater mixer 110. Thereafter, the suspension chain 111 attached to the underwater mixer 110 is gradually pulled down, and the underwater mixer 110 is lowered along the fixed column 105.

During maintenance, it is necessary to pull up the underwater mixer 110 from the water tank. In such a case, an operation reverse to the above-described installation operation is performed, and the underwater mixer 110 is moved to the standby position 130 outside the water tank using the lifting column 125.
JP 2002-346359 A (FIG. 7)

  However, the installation apparatus 100 requires the lifting column 125 and the fixing bracket 104 for supporting the lifting column 125. For this reason, an increase in the size of the apparatus cannot be avoided. Also, it was difficult to say that workability was sufficiently high.

  This invention is made | formed in view of this point, The place made into the objective is to aim at size reduction of an installation apparatus by making a lifting support | pillar unnecessary. Moreover, it aims at improving the workability | operativity of installation work.

  An underwater agitator installation device according to the present invention is an installation device for installing an underwater agitator in a sewage treatment tank, and is installed in the sewage treatment tank, at least a position directly above the installation position of the underwater agitator From the side position to the installation position, the transport means having a traveling means and a crane for raising and lowering the underwater agitator and capable of traveling while holding the underwater agitator. It has a guide rail that leads to the upper position.

  Another installation apparatus according to the present invention is an installation apparatus for installing an underwater agitator in a sewage treatment tank, and has a traveling means and a crane for raising and lowering the underwater agitator. A holding means that can travel while being held, and is installed in the sewage treatment tank, extends at least from a position directly above the installation position of the underwater agitator to a side position, and moves the conveying means from the side position to the side. And a guide rail that leads to a position just above the installation position.

  According to the above-described installation apparatus, when the installation is performed, the submerged stirrer can be easily transferred from the outside of the sewage treatment tank to the position just above the installation position by simply moving the conveying means along the guide rail. Can do. Moreover, in the case of a maintenance, an underwater stirrer can be easily conveyed from the position right above an installation apparatus to the outer side of a sewage treatment tank. Therefore, the lifting column is unnecessary, and the installation apparatus can be downsized. In addition, workability is improved.

  By the way, in the conventional installation apparatus using the lifting column, there is a problem that the movable range of the underwater agitator is limited to the inside of the rotation radius of the lifting column and the movement range of the underwater agitator is narrow. However, in the above installation apparatus, the moving range of the underwater agitator can be freely expanded by extending the length of the guide rail. By increasing the movement range of the underwater agitator, it is possible to improve the efficiency of the installation work.

  It is preferable that the traveling means of the conveying means is composed of wheels, and the upper surface side of the guide rail is formed to have a concave cross section.

  As a result, the wheels of the transport means fit into the recesses of the guide rail, and are prevented from falling off the guide rail.

  It is preferable that the installation device includes a column that extends downward from the guide rail into the water tank using the guide rail as a beam, guides the ascending / descending of the underwater agitator, and supports the underwater agitator.

  Thus, the guide rail also functions as a structural material that supports the support column. Therefore, an extra structural material for supporting the support can be omitted, and the installation apparatus can be further downsized.

  The guide rail may be spanned from one side wall of the sewage treatment tank to the other side wall.

  According to the said structure, an underwater stirrer can be easily moved to the position just above an installation position by making a conveyance means drive | work to a predetermined position on the water surface along a guide rail. Thereafter, the underwater agitator can be easily installed at a predetermined installation position by lowering the underwater agitator.

  The sewage treatment tank may include a lid in which an opening is formed, and the guide rail may be fixed to the lid.

  According to the said structure, an underwater stirrer can be easily moved to the position just above an opening by making a conveyance means drive along the guide rail to the position of an opening. Thereafter, the underwater agitator can be easily installed by lowering the underwater agitator into the sewage treatment tank through the opening.

  The sewage treatment tank may be a sewage circulation treatment tank that circulates sewage, and the underwater agitator may be an underwater mixer.

  This makes it possible to reduce the size of the installation device, for example, when performing sewage treatment by the oxidation ditch method.

  As described above, according to the present invention, since the underwater agitator can be moved to a position directly above the installation position by running the conveying means along the guide rail, the lifting column is not necessary. . Therefore, the installation apparatus can be miniaturized by omitting the lifting column. In addition, workability is improved.

  By appropriately adjusting the length of the guide rail, the moving range of the underwater agitator can be expanded. In addition, it is possible to increase the efficiency of the installation work by expanding the movement range of the underwater agitator.

  By forming the upper surface side of the guide rail to have a concave cross section, it is possible to prevent the conveyance means from falling off with a simple configuration. As a result, the safety of the installation work of the underwater agitator can be improved.

  By using the guide rail as a beam, it is not necessary to provide an extra structural member to support the support column that supports the underwater agitator. Therefore, the installation apparatus can be further downsized by omitting an extra structural material.

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

  As shown in FIGS. 1 to 3, the installation device 1 according to the embodiment is a device for installing the underwater mixer 2 inside the sewage treatment tank 3. As shown in FIG. 5, in this embodiment, the sewage treatment tank 3 is a so-called circulation type water tank that purifies the sewage while circulating it (note that the installation device 1 and the underwater mixer 2 are not shown in FIG. 5). ) The sewage treatment tank 3 is composed of four linear water channels 10 extending in parallel to each other and a curved water channel 11 connecting the ends of the linear water channels 10. The installation apparatus 1 according to the present embodiment is installed in the straight water channel 10. However, the installation location of the installation apparatus 1 is not limited at all, and it is of course possible to provide the installation apparatus 1 in the curved water channel 11. The sewage in the sewage treatment tank 3 is circulated by the underwater mixer 2 and subjected to sewage treatment by the oxidation ditch method.

  As shown in FIG. 3 and FIG. 4, the installation device 1 includes a pair of front and rear first horizontal beams 4 spanning from one side wall 3A of the water channel 10 of the sewage treatment tank 3 to the other side wall 3B, and a first horizontal beam 4. And a pair of left and right second horizontal beams 5 spanned between the two. The second horizontal beam 5 is inclined from the flow path direction. However, the 2nd horizontal beam 5 should just cross | intersect the 1st horizontal beam, and of course may extend in parallel with the flow-path direction. In this embodiment, the sewage treatment tank 3 is made of concrete, and the first transverse beam 4 and the second transverse beam 5 are made of stainless steel. The first horizontal beam 4 is fixed to the upper surfaces of the side walls 3A and 3B of the sewage treatment tank 3 by a fixture (not shown) such as an anchor bolt. The second transverse beam 5 is fixed to the middle portion of the first transverse beam 4 by a fixing tool (not shown) such as a bolt. However, the materials of the sewage treatment tank 3 and the horizontal beams 4 and 5 are not particularly limited, and materials other than those described above can be used. The 2nd cross beam 5 may be joined to the 1st cross beam 4 without using a fixture, and the 1st cross beam 4 and the 2nd cross beam 5 may be an integral thing. The number of the first horizontal beams 4 or the second horizontal beams 5 is not limited to two, and may be one or three or more.

  As shown in FIG. 4, a flat plate 6 that partially closes the upper side of the flow path of the sewage treatment tank 3 is provided above the first horizontal beam 4 and the second horizontal beam 5. An opening 7 larger than that of the underwater mixer 2 is formed in the central portion of the flat plate 6 in the left-right direction. A flat plate 8 is provided in front of the flat plate 6. The flat plate 8 is spanned from one side wall 3A of the sewage treatment tank 3 to the other side wall 3B, and is used as a work table for providing a work space for the operator when the submerged mixer 2 is installed or maintained. Is. Fences 9 are respectively provided in the vicinity of the rear first transverse beam 4 and the front side of the flat plate 8.

  FIG. 6 shows a cross section of the first transverse beam 4. The upper part of the first transverse beam 4 is formed in a concave shape. That is, a groove-shaped guide rail 20 is formed on the first transverse beam 4. As described above, since the first horizontal beam 4 extends from the one side wall 3 </ b> A of the water channel 10 to the other side wall 3 </ b> B, the guide rail 20 is formed over the entire width of the water channel 10.

  As shown in FIGS. 1 and 2, the first transverse beam 4 and the second transverse beam 5 are provided with a plurality of support columns 12 extending downward. The lower end of the support column 12 is located above the bottom wall 3C of the sewage treatment tank 3, and a gap is left between the support column 12 and the bottom wall 3C. However, the column 12 is not required to be fixed to the bottom wall 3C, and the lower end of the column 12 may be in contact with the bottom wall 3C as long as the operation of the underwater mixer 2 is not hindered.

  The underwater mixer 2 is provided with a guide member 21 having a substantially U-shaped cross section that engages with the support column 12. When the operator suspends or lifts the underwater mixer 2, the guide member 21 engages with the front column 12, and the underwater mixer 2 is prevented from shaking in the lateral direction. Thus, the front column 12 is also used as a lifting rail for guiding the raising and lowering of the underwater mixer 2.

  A support plate 14 is attached to the lower end of the column 12. The underwater mixer 2 suspended along the column 12 is installed on a predetermined position by being placed on the support plate 14.

  Next, installation work of the underwater mixer 2 will be described.

  In the installation work of the submersible mixer 2, for example, a portable simple crane 30 as shown in FIG. The simple crane 30 includes a winch 38 having a drum 32 and a handle 34, a frame 37 that supports the winch 38, four legs 31 fixed to the lower part of the frame 37, and casters 33 attached to the lower ends of the legs 31. And. A wire 35 is wound around the drum 32. However, instead of the wire 35, other winding means such as a chain or a rope can be used. A shackle 36 for attaching the underwater mixer 2 is provided at the tip of the wire 35.

  In the installation work, first, the shackle 36 is attached to the underwater mixer 2, the handle 34 is rotated, and the wire 35 is wound up to slightly lift the underwater mixer 2. As a result, the simple crane 30 can travel while holding the underwater mixer 2.

  Next, the operator places the casters 33 on the guide rails 20 of the first transverse beams 4 while pushing the simple crane 30. Then, the simple crane 30 is caused to travel along the first transverse beam 4 and is moved to a position directly above the opening 7 of the flat plate 6. The position directly above the opening 7 corresponds to a position directly above the installation position of the underwater mixer 2.

  Next, the operator rotates the handle 34 of the simple crane 30 and gradually hangs the wire 35. As a result, the underwater mixer 2 slowly descends, and the guide member 21 of the underwater mixer 2 engages with the column 12. The worker further rotates the handle 34 in this state. Then, the underwater mixer 2 is further lowered while being guided by the support column 12 and placed on the support plate 14. As a result, the underwater mixer 2 is installed at a predetermined installation position.

  Thereafter, the wire 35 is removed from the drum 32 and the wire 35 is wound around a predetermined portion of the sewage treatment tank 3. Then, the simple crane 30 is caused to travel along the guide rails 20 of the first transverse beam 4 and is moved to the outside of the sewage treatment tank 3. Thereby, the installation work of the underwater mixer 2 is completed.

  During maintenance of the underwater mixer 2, the underwater mixer 2 is lifted from the inside of the sewage treatment tank 3 and moved to the outside of the sewage treatment tank 3 by a procedure reverse to the above-described procedure.

  As described above, the installation device 1 according to the present embodiment is fixed at a position on the water surface of the sewage treatment tank 3 by fixing the first horizontal beam 4 to the upper surfaces of the side walls 3A and 3B of the sewage treatment tank 3. ing. Therefore, since it is not necessary to attach a fixing tool to the location under the water surface of the sewage treatment tank 3, when the installation device 1 is installed, construction under the water surface is unnecessary. Therefore, when installing the installation apparatus 1, it is not necessary to discharge | emit the water in the sewage treatment tank 3, and the cleaning of the sewage treatment tank 3 is also unnecessary. Therefore, the installation apparatus 1 can be easily installed.

  Since the support column 12 that supports the underwater mixer 2 can be used as a lifting rail, the underwater mixer 2 can be prevented from swinging when the underwater mixer 2 is lifted or suspended. As a result, installation and maintenance work of the underwater mixer 2 can be easily performed.

  By simply placing the underwater mixer 2 on the support plate 14, the underwater mixer 2 can be easily installed at a predetermined position. In other words, the underwater mixer 2 can be accurately installed at a predetermined position by a simple operation of simply suspending the underwater mixer 2 along the support column 12.

  By a simple operation of simply traveling the simple crane 30 along the guide rail 20 of the first cross beam 4, the position of the opening 7 of the flat plate 6 (that is, the position of the opening 7 of the flat plate 6 (that is, FIG. 1)) The submersible mixer 2 can be easily moved to a position just above the installation position. Therefore, a dedicated lifting column for moving the underwater mixer 2 from the outside of the sewage treatment tank 3 to the position of the opening 7 becomes unnecessary. Therefore, the installation apparatus can be reduced in size.

  Since the movement range of the simple crane 30 is large, the workability of installation or maintenance of the underwater mixer 2 can be improved.

  Further, unlike the case of moving using the lifting column, the underwater mixer 2 mounted on the simple crane 30 only moves linearly in one direction along the guide rail 20, so that the operator can easily move the underwater mixer 2. Can be grasped, and workability and safety are improved.

  Further, since the guide rail 20 has a concave cross section, the caster 33 of the simple crane 30 is difficult to drop off from the guide rail 20. Therefore, it is possible to effectively prevent the simple crane 30 from falling off, and it is possible to easily perform installation or maintenance work. In addition, safety is improved.

  Since the 1st cross beam 4 exhibits the function as a structural material which supports the support | pillar 12 and the underwater mixer 2, and the function as a guide member which guides the simple crane 30, a beam and a guide rail are formed with a separate member. Compared to the case, the number of parts can be reduced.

  In the above embodiment, the underwater mixer 2 is used as the underwater agitator, but the underwater agitator installed by the installation device 1 is not limited to the underwater mixer 2. The underwater agitator may be an aerator or the like.

  The flat plate 6 is not always necessary, and the flat plate 6 can be omitted. Further, the flat plate 8 may be omitted if the worker can perform a predetermined work without the flat plate 8.

  Since the guide rail 20 of the first transverse beam 4 is formed over the entire width of the water channel 10, the simple crane 30 can be freely moved over the entire width of the water channel 10. Therefore, the installation position can be set to an arbitrary position.

  The guide rail 20 may be provided only on a part of the first transverse beam 4. As long as the guide rail 20 is provided from one side wall 3A of the sewage treatment tank 3 to a position directly above the installation position, the above-described effects can be obtained.

  The configuration of the simple crane 30 is not limited to the above-described configuration, and various modifications are possible. The traveling means of the simple crane 30 is not limited to a caster, and may be a roller or the like. The simple crane 30 and the guide rail 20 may be provided with engaging means that can slide with respect to each other, and the simple crane 30 may move while sliding on the guide rail 20.

  The sewage treatment tank to be installed by the installation apparatus 1 is not limited to the circulation-type sewage treatment tank 3, and may be another type of sewage treatment tank. The method of sewage treatment is not limited to the oxidation ditch method. The 1st cross beam 4 of the installation apparatus 1 does not need to be spanned between the side walls of a sewage treatment tank, may be fixed only to one side wall, and may be supported in the cantilever state.

  As shown in FIG. 8A, the sewage treatment tank may be provided with a lid 41 having an opening 40, and the first horizontal beam 4 may be bridged in the horizontal direction so as to straddle the opening 40. Further, as shown in FIG. 8B, the first horizontal beam 4 may be provided along the edge of the opening 40.

  In addition, when the underwater mixer 2 can be supported only by the 1st cross beam 4, the 2nd cross beam 5 is also omissible.

  As described above, the present invention is useful for an installation device or the like for installing an underwater mixer in a sewage treatment tank.

It is a front view of an installation apparatus. It is a side view of an installation apparatus. It is a top view of an installation apparatus. It is a perspective view of an installation apparatus. It is a perspective view of a sewage treatment tank. It is sectional drawing of a 1st cross beam. It is a side view of a simple crane. (A) And (b) is a top view which shows the modification of the attachment aspect of an installation apparatus, respectively. It is a perspective view of the conventional installation apparatus.

Explanation of symbols

1 Installation equipment 2 Underwater mixer (underwater stirrer)
DESCRIPTION OF SYMBOLS 3 Side wall of sewage treatment tank 3A, 3B Side wall of sewage treatment tank 4 1st horizontal beam 5 2nd horizontal beam 6 Flat plate 7 Opening 12 Support | pillar 13 Water surface 14 Support stand 20 Guide rail 21 Guide member 30 Simple crane (conveyance means)
33 casters (traveling means, wheels)
40 opening 41 lid

Claims (7)

An installation device for installing an underwater agitator in a sewage treatment tank,
The submerged stirrer installed in the sewage treatment tank, having at least a traveling means and a crane for raising and lowering the submerged stirrer, extending from a position just above the installation position of the submerged stirrer to a side position. An apparatus for installing an underwater agitator, comprising a guide rail that guides a transporting means that can travel while holding the position from the lateral position to a position directly above the installation position. An installation device for installing an underwater agitator in a sewage treatment tank,
A transporting means having a traveling means and a crane for raising and lowering the underwater agitator, and capable of traveling while holding the underwater agitator;
It is installed in the sewage treatment tank, extends at least from a position just above the installation position of the submerged stirrer to a side position, and guides the conveying means from the side position to a position just above the installation position. A guide rail;
A device for installing an underwater agitator. The traveling means of the conveying means consists of wheels,
The apparatus for installing an underwater agitator according to claim 1 or 2, wherein a cross section of the upper surface side of the guide rail is formed in a concave shape.   The said guide rail is used as a beam, It extends below toward the water tank from the said guide rail, and is equipped with the support | pillar which supports the said underwater agitator while guiding the raising / lowering of the underwater agitator. The installation device of the underwater agitator described in 1.   The said guide rail is the installation apparatus of the submerged stirrer as described in any one of Claims 1-4 spanned over the other side wall from one side wall of the said wastewater treatment tank. The sewage treatment tank includes a lid in which an opening is formed,
The apparatus for installing an underwater agitator according to any one of claims 1 to 4, wherein the guide rail is fixed to the lid. The sewage treatment tank comprises a sewage circulation treatment tank for circulating sewage,
The apparatus for installing an underwater agitator according to any one of claims 1 to 6, wherein the underwater agitator comprises an underwater mixer.

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