JP2000167375A - Installing device of underwater mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an installing device of an underwater mixer capable of vertically providing a guide support for installing the underwater mixer in a water tank even if the water tank is not emptied and capable of certainly holding the thrust force created by the underwater mixer. SOLUTION: A guide support 2 is vertically provided in a water tank P along the side wall W thereof and a support stand 3 for placing an underwater mixer 4 to fix the same is attached to the guide support 2 in a liftable manner. The guide support 2 is held by the brackets 5a, 5c fixed to the side wall W above the surface S of the water and the thrust holding member 8 protruding in the direction of the side wall W is provided to the guide support 2 in the vicinity of the lower end part thereof and the edge end part of the thrust holding member 8 is brought into contact with the side wall W to receive the thrust force F generated by the underwater mixer 4 by the side wall W to vertically hold the posture of the guide support 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the installation of a submersible mixer used for stirring and purifying stored water in a water tank in a sewage treatment plant, a water reservoir of various factories, a pond, a moat, a fish farm, and the like. Related to the device.

[0002]

2. Description of the Related Art Sewage treatment plants, water storage facilities such as various factories, ponds,
In moats, fish farms, etc., in order to purify stored water in a water tank, an underwater mixer is installed in the water tank to stir the stored water. The underwater mixer has a plurality of stirring blades at the tip of a rotating shaft directly connected to a motor output shaft, and generates a swirling flow in the stored water by the rotation of the stirring blades. A blower for blowing and diffusing air into the swirling flow is used.

In installing such an underwater mixer in a water tank, conventionally, for example, Japanese Patent Application Laid-Open No. 7-275883
The installation apparatus of the underwater mixer disclosed in Japanese Patent Laid-Open Publication No. H10-209,004 is used. As shown in FIG. 5, this underwater mixer installation device 1a has a guide column 2 erected along a side wall W of a water tank P, and a support 3 is attached to the guide column 2 so as to be able to move up and down.
The underwater mixer 4 is placed and fixed on the support 3. The upper and lower portions of the guide support 2 are held by brackets 5a and 5b bolted to the side wall W of the water tank P so that the thrust force F generated by the operation of the underwater mixer 4 can be reliably received. The underwater mixer 4 can be rotated in the horizontal direction together with the support base 3 around a rotation support shaft 50 provided on 5a, 5b, and the direction of the underwater mixer 4 can be changed.

Further, as shown in FIG. 6, the upper portion of the guide column 2 is held by a bracket 5a bolted to the side wall W, while the lower portion of the guide column 2 is held by a base 6 bolted to the tank bottom B. An underwater mixer installation apparatus 1b is also known.

[0005]

However, in the above-described conventional underwater mixer installation apparatuses 1a and 1b, the lower portions of the guide posts 2 are fixed to the side walls W near the tank bottom B by the brackets 5a and 5b or the tanks. Since it is held by the base 6 fixed to the bottom B, it is necessary to expose the tank bottom B to the atmosphere in order to perform the installation work. Therefore, when installing the underwater mixer 4 in the existing water tank P, there is an inconvenience that the inside of the water tank P has to be emptied once.

Also, a bracket 5 is provided on the underwater portion of the water tank P.
Since the fixing bolts 7a and 5b and the fixing bolt 7 of the base 6 must be embedded, holes are formed in the waterproof layer on the surface of the water tank P formed by waterproof mortar or the like, which may impair the waterproof performance of the water tank P. there were.

On the other hand, if the guide post 2 is to be held only at the portion exposed above the water surface, the bracket 5a and the guide post 2 must be made quite large, which is irrational and uneconomical.

The present invention has been made in view of such circumstances, and a guide column for installing an underwater mixer can be erected in a water tank without emptying the water tank.
Moreover, it is an object of the present invention to provide a submersible mixer installation device that can reliably hold the thrust force generated by the submersible mixer.

[0009]

According to a first aspect of the present invention, there is provided an apparatus for installing an underwater mixer, wherein a guide post is erected along a side wall of a water tank, and the underwater mixer is mounted on the guide post. In an underwater mixer installation device in which a support base for fixing is mounted so as to be able to move up and down, an upper portion of the guide support is held by a bracket fixed to a side wall above the water surface, and a side wall is provided near a lower end portion of the guide support. The thrust holding member is provided so as to protrude therefrom, and the thrust force generated by the operation of the underwater mixer is received by the side wall when the edge of the thrust holding member contacts the side wall.

That is, in the installation apparatus of the underwater mixer, the upper portion of the guide column is attached to a bracket fixed to a side wall on the water surface to hold the guide column so as not to sink into the water, while the operation of the underwater mixer causes the guide column to be mounted. The thrust force applied to the lower portion is received by the side wall via the thrust holding member abutting on the side wall.
Since the lower part of the guide support is pressed in the side wall direction by the thrust force, the lower part of the guide support is held in a substantially vertical posture without being fixed by bolts or the like. Therefore, during installation work, it is only necessary to fix the bracket to the side wall above the water surface, and there is no need for installation work in the underwater part, so there is no risk that the waterproof performance of the water tank surface will be impaired by fixing bolts etc. . Further, even when the underwater mixer is installed in the existing water tank, it is not necessary to empty the water stored in the water tank. In addition, the shapes and strengths of the brackets and the guide posts need not be excessively increased, and furthermore, the maintenance and management of the underwater mixer main body and the installation device become easy.

According to a second aspect of the present invention, in the installation apparatus for an underwater mixer, the guide column is held so as to be rotatable in a horizontal direction about a rotation shaft provided on the bracket. At the edge of the thrust holding member, a plurality of thrust holding rollers rotatable in the horizontal direction are arranged in an arc shape centered on the hanging line of the rotation support shaft, and the peripheral edge of these thrust holding rollers is By contacting the side wall, a thrust force generated by operation of the underwater mixer is received by the side wall.

In this underwater mixer installation apparatus, a rotation support shaft is provided on a bracket that holds a guide column, so that the underwater mixer can be turned horizontally. The direction of action of the thrust force changes with the turning of the underwater mixer. To cope with this, the thrust holding roller is arranged in an arc shape at the edge of the thrust holding member. As a result, even when the guide post is rotated, any of the thrust holding rollers arranged at positions corresponding to the direction of the guide post smoothly abuts the side wall, securely receiving the thrust force, and vertically moving the guide post. Can be held.

Further, in the underwater mixer installation apparatus according to a third aspect of the present invention, at least a peripheral portion of the thrust holding roller is formed of an elastic body.

According to this underwater mixer installation apparatus, the waterproof layer provided on the surface of the side wall of the water tank can be prevented from being damaged by the contact of the thrust holding roller with, for example, waterproof mortar, and the durability of the water tank can be reduced. Can be improved. The elastic body is, for example, a resin or a synthetic rubber having excellent water resistance, but the material is not particularly limited.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an overall configuration of an underwater mixer installation apparatus 10 of the present invention and an underwater mixer 4 installed in a water tank P using the same. For convenience of description, the right side (the center side of the water tank P) in this drawing is defined as the front, and the left side (the side wall W side of the water tank P) is defined as the rear side.

The installation apparatus 10 of the underwater mixer comprises one guide column 2 vertically held along the side wall W of the water tank P;
A support table 3 is attached to the guide column 2 so as to be able to move up and down. An underwater mixer 4 is placed and fixed on the support table 3.

The guide column 2 is made of a hollow tubular member such as a square tube or a circular tube, or a groove-shaped member having a partially open side surface. The lower portion of the guide column 2 is immersed in water. , Are held so that the upper part is exposed on the water surface S.

The support 3 has a mounting plate 31 on which the underwater mixer 4 is mounted and fixed, and a slider 32 standing upright from the rear end of the mounting plate 31. The slider 32 is formed in a cross-sectional groove shape, and is attached to the guide column 2 so as to hold the side surface of the guide column 2 from the front. And it is held so that it may not come off from the guide support | pillar 2 by the raising / lowering roller 33 attached up and down of the rear edge of a side surface part, and can be moved up and down along the guide support | pillar 2.

The underwater mixer 4 has a stirring blade 42 that is driven to rotate by a motor (not shown) housed in a case 41, and the surrounding stored water is stirred by rotating the stirring blade 42. While discharging the water to generate a swirling flow in the stored water. A power supply cable (not shown) to the underwater mixer 4 extends to the ground along or through the guide support 2 and is connected to a power supply facility (not shown) provided on the ground. Have been. A chain 43 is attached to the case 41 of the underwater mixer 4, and an upper end of the chain 43 is attached to an upper bracket 5a described later. By suspending the chain 43, the underwater mixer 4 can be moved up and down to an arbitrary height, and its posture can be kept horizontal.

When the underwater mixer 4 is operated, a thrust force (thrust) F is applied to the support 3 and the guide column 2 that support the underwater mixer 4 in the direction opposite to the generated swirling flow, that is, in the direction of the side wall W of the water tank P. As a result, the guide column 2 is pressed in the side wall W direction. In order to receive the thrust force F and hold the guide column 2 vertically at all times, in the present invention, the guide column 2 is held by the upper bracket 5a and the middle bracket 5c, and is provided at the lower end of the guide column 2. It is also supported by the thrust holding member 8.

Each of the upper bracket 5a and the intermediate bracket 5c is fixed to the side wall W on the water surface S by the fixing bolt 7 and protrudes forward, and is provided vertically at the front end of each fixing part 51. And a turning portion 52 rotatably connected by a turning support shaft 50. The front end of each rotating portion 52 is fixed to the rear surface of the guide column 2 so that the guide column 2 is held so as not to sink in water. The pivots 50 are arranged on the same vertical line, and when the pivots 52 are pivoted about these pivots 50 in the horizontal direction, the guide posts 2 are also supported while maintaining the vertical posture. It rotates with the table 3 in the horizontal direction. Thus, the direction of the underwater mixer 4 can be turned in the horizontal direction.

As shown in FIG. 2, a semicircular turning plate 53 is horizontally attached to the rotating portion 52 of the upper bracket 5a so as to project toward the upper surface of the fixed portion 51. The deflection plate 53 is configured to rotate about the rotation support shaft 50 integrally with the rotation portion 52,
A plurality of through holes 54 are formed at a certain interval in the circumferential direction slightly inside the arc-shaped edge. On the other hand, one fixing hole (not shown) is formed in the fixing part 51 so as to correspond to each through hole 54 that moves with the rotation of the rotating part 52. Then, in a state where one of the through holes 54 of the rotating part 52 and the fixing hole of the fixing part 51 are opposed to each other, the fixing pin 55 or the like is inserted through the through hole 54 and the fixing hole. Is fixed.

The through-holes 54 in the illustrated embodiment have a rotation angle of about 30 degrees, two on each side of the underwater mixer 4 at a position perpendicular to the side wall W of the water tank P. It is formed so as to be cut, but the position and number of these through holes 54 are not necessarily limited to this.

As shown in FIGS. 3 and 4, the thrust holding member 8 is provided with a thrust holding plate 8 provided to protrude from the lower end of the guide support 2 in the direction of the side wall W of the water tank P.
1 and a plurality of thrust holding rollers 82 arranged at the edge of the thrust holding plate 81.

The thrust holding plate 81 is provided on the guide post 2
The front body 81a has a substantially triangular front portion 81a provided to widen rearward from the rear surface and left and right side surfaces and a substantially semicircular rear portion 81b formed behind the front portion 81a. It is integrally fixed to the lower end of the guide column 2 and is held horizontally. Center 80 of substantially semicircular rear portion 81b
Are located on a straight line extending downward from the pivot 50 of the upper bracket 5a and the intermediate bracket 5c.

A plurality of thrust holding rollers 82 are attached to the edge of the rear portion 81b of the thrust holding plate 81 at regular intervals in the circumferential direction. Therefore, the thrust holding rollers 82 are also arranged in an arc shape having the center 80 on a straight line extending downward from the rotation support shaft 50 of the upper bracket 5a and the intermediate bracket 5c. The thrust holding roller 82 is a cylindrical body made of resin or synthetic rubber, and has a thrust holding plate 81.
Are mounted so as to be rotatable in the horizontal direction by roller support pins 83 provided so as to stand upright from the lower surface side. The peripheral edge of the thrust holding roller 82 protrudes outside the edge of the thrust holding plate 81, and the guide post is held in a state where the peripheral edge of any two thrust holding rollers 82 abuts against the side wall W of the water tank P. 2 are held vertically.

When the underwater mixer 4 is operated in this state,
The thrust force F generated thereby acts so as to press the lower part of the guide column 2 toward the side wall W of the water tank P. However, since the thrust holding member 8 provided at the lower end of the guide column 2 is in contact with the side wall W, the thrust force F is reduced to the side wall W.
It is accepted at. Thereby, even during the operation of the underwater mixer 4, the posture of the guide support 2 is stabilized.

When the guide column 2 is rotated about the rotation support shaft 50 of the upper bracket 5a and the intermediate bracket 5c, the thrust holding plate 81 also moves around its center 80 as shown in FIG. It turns, and the two thrust holding rollers 82 at different positions come into contact with the side wall W. In this case, the thrust force F acts obliquely to the side wall W. However, most of the thrust force F is generated by the side wall W unless the direction of the underwater mixer 4 is extremely close to a position parallel to the side wall W. I can take it. Therefore, even when the guide column 2 is rotated, the posture of the guide column 2 is maintained substantially vertical, and the rotation of the guide column 2 is performed smoothly.

In the illustrated embodiment, the thrust holding roller 82 moves the underwater mixer 4 to the side wall W of the water tank P so as to correspond to the position of the through hole 54 formed in the deflection plate 53 of the upper bracket 5a. A total of six are arranged, two at a position opened about 15 degrees on both sides from the center line 84 in the front-rear direction in a state perpendicular to the direction, and two on both sides so as to engrave a rotation angle of about 30 degrees. ing. However, the position and number of these thrust holding rollers 82
It varies as appropriate according to the position and number of the through holes 54 formed in the deflection plate 53.

As described above, in the present invention,
Upper bracket 5 fixed to side wall W on water surface S of water tank P
a and the middle bracket 5c hold the upper part of the guide column 2 while the thrust holding member 8 provided at the lower end of the guide column 2 is brought into contact with the side wall W, and the thrust force F acting on the lower part of the guide column 2 Is held by the side wall W, the guide column 2 is always kept in a substantially vertical posture. Therefore, when installing the underwater mixer installation device 10 in the water tank P, the upper bracket 5a and the intermediate bracket 5c are provided on the side wall W of the portion exposed on the water surface S.
It is only necessary to fix the guide posts 2 to these bolts, and it is not necessary to perform the installation work on the side wall W and the tank bottom B located in the underwater portion of the water tank P. Therefore, even in the existing water tank P, the water stored in the water tank P can be installed without emptying. It is also very convenient when the main body of the underwater mixer 4 and the installation device are lifted out of the water or reinstalled for maintenance and management. further,
Since the lower part of the installation device 10 of the underwater mixer does not contact the tank bottom B, even if a haunch is provided at the lower part of the side wall W of the water tank P, it can be installed without being affected by this.

In the above-described embodiment, the upper bracket 5a and the intermediate bracket 5c are fixed to the side wall W on the water surface S, and the guide column 2 is held by these brackets. In consideration of various conditions such as the size of P, the depth of water, the weight of the submersible mixer 4 and the size of the generated thrust force F, the number of the intermediate brackets 5c is increased, and conversely, the upper bracket is omitted by removing the intermediate bracket 5c. By holding the guide support 2 only with 5a, the specifications and set strength of each member can be economically selected.

Further, according to the present invention, since it is not necessary to embed the fixing bolt 7 in the underwater portion of the water tank P, the waterproof layer formed on the surface of the water tank P by the waterproof mortar or the like is not damaged. The waterproof performance is not impaired. Furthermore, by making the peripheral portion of the thrust holding roller 82 an elastic body, the protection of the waterproof layer is also thorough, and the durability of the water tank P is improved.

The underwater mixer installation apparatus 1 of the present invention
The detailed structure and specifications of the main body of the underwater mixer 4 which is installed by using 0 are arbitrary, and various known underwater mixers can be selected including those of a type to which a blower is connected.

[0035]

According to the underwater mixer installation apparatus of the present invention, the guide post is held by the bracket fixed to the side wall on the water surface of the water tank, and the thrust holding member provided near the lower end of the guide post is provided. By contacting the side wall and receiving the thrust force generated by the underwater mixer,
The guide post is held in a substantially vertical position. Therefore, the underwater mixer can be installed in the water tank simply by fixing the bracket to the side wall above the water surface and attaching the guide post thereto. In other words, there is no need to perform installation work in the underwater part, so there is no risk of impairing the waterproof performance of the tank surface,
Even when an underwater mixer is installed in an existing water tank, it is not necessary to empty the water stored in the water tank. Also, the component shape and strength of the bracket do not need to be excessively increased, and furthermore, maintenance management of the underwater mixer and the installation device becomes easy.

Further, by providing a pivot for supporting the bracket for holding the guide post and arranging a plurality of thrust holding rollers in an arc shape at the edge of the thrust holding member, the guide post is smoothly rotated. Then, the direction of the underwater mixer can be turned. And even in this case,
One of the thrust holding rollers according to the direction of the underwater mixer abuts on the side wall, and the thrust force can be reliably received to hold the posture of the guide column vertically.

Further, when the peripheral portion of the thrust holding roller is formed of an elastic body, damage to the waterproof layer provided on the surface of the side wall is prevented, and the durability of the water tank is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an installation device for an underwater mixer according to the present invention.

FIG. 2 is a top view of an upper bracket in the installation device for the underwater mixer.

FIG. 3 is a top view of a thrust holding member in the installation device for the underwater mixer.

FIG. 4 is a top view showing a rotating state of the thrust holding member shown in FIG. 3;

FIG. 5 is a perspective view showing an example of a conventional underwater mixer installation apparatus.

FIG. 6 is a perspective view showing another example of a conventional underwater mixer installation apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Underwater mixer installation apparatus 2 Guide pillar 3 Support 4 Underwater mixer 5a Upper bracket 5b Intermediate bracket 50 Rotation support shaft 8 Thrust holding member 82 Thrust holding roller P Water tank W Side wall S Water surface F Thrust force

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Seiji Kawaguchi 1-1, Shinmeiwa-cho, Takarazuka-shi, Hyogo F-term in the Industrial Machinery Systems Division, Shinmeiwa Kogyo Co., Ltd. (Reference) 3E070 AA02 AB02 FA10 FB03 4G037 DA23 EA02

Claims (3)

[Claims] Claims: 1. A guide post is provided upright along a side wall of an aquarium,
In an underwater mixer installation device in which a support base for mounting and fixing an underwater mixer is mounted on the guide support so as to be able to move up and down, the upper part of the guide support is held by a bracket fixed to a side wall on the water surface. At the same time, a thrust holding member projecting in the side wall direction is provided in the vicinity of the lower end of the guide column, and the thrust force generated by the operation of the underwater mixer is generated at the side wall by the edge of the thrust holding member abutting the side wall. An underwater mixer installation device characterized by being received. 2. The guide post is held rotatably in a horizontal direction about a rotation support shaft provided on the bracket, while being rotatable in a horizontal direction at an edge of the thrust holding member. A plurality of thrust holding rollers are arranged in an arc shape centered on the hanging line of the rotation support shaft, and the peripheral edge of these thrust holding rollers abuts on the side wall, so that the thrust force generated by the operation of the underwater mixer is reduced. The installation device for an underwater mixer according to claim 1, wherein the installation device is received by a side wall. 3. The underwater mixer installation apparatus according to claim 2, wherein the thrust holding roller has at least a peripheral portion formed of an elastic body.