JP2002292390A - Underwater aerator and underwater support structure thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply eliminate the clogging of an underwater aerator, to regulate a position in water and to cope with the vibration caused by the turning of an internal fluid. SOLUTION: A revolving stream generation means is provided in a cylindrical pipe body permitting a fluid to pass and a weight for suppressing the shaking due to centrifugal force of the internal revolving fluid is integrally fixed to the outside of the pipe body to constitute a treatment cylindrical main body. An air feed pipe, wherein a leading end nozzle is allowed to face from the fluid supply side of the treatment cylindrical main body toward the revolving stream generation means, is fixed to the treatment cylindrical main body. A hanging means for supporting the aerator in the fluid is provided in the treatment cylindrical main body. The weight is constituted of the outer pipe made of concrete or a metal with a predetermined thickness surrounding the cylindrical pipe body of the aerator. As the hanging means, the bolt piercing the weight in the axial direction thereof to be connected to the receiving plate provided to the lower part of the treatment cylindrical main body at the lower end thereof is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0101]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater aerator in which a swirling centrifugal force of a fluid is generated inside a tubular body, and more particularly to an underwater aerator which is suspended and suspended in the water in a stable state.

[0092]

2. Description of the Related Art A submersible aerator provided with a vane for generating an accelerated swirling flow in a pipe with an open top and bottom and an air supply nozzle facing the vane from an upstream end of the vane is provided with a manure. It is widely used in various devices such as fertilizer treatment, sewage purification treatment, fluid reaction treatment, and air diffusion in lakes and ponds.

[0093]

When this type of aerator is installed in treated water, conventionally, the aerator was fixedly mounted on a structure in the treated water. However, the support structure for fixing the aerator to a structure in the treated water has the following problems. First, an aerator fixedly supported on an underwater structure requires a large lifting operation, so that it is extremely difficult to repair it when a trouble occurs. In particular, since the underwater aerator sucks the liquid from the upstream opening, solids in the treated water are likely to be caught by the absorption port. For example, when liquid fertilizer is produced from manure of dairy cows, a process of aging solid-liquid separated urine (liquid) is performed, and this urine is added to solids such as straw in a barn and undigested feed. Because of the presence of the minute portion, this catches on a member near the upstream opening of the aerator, causing clogging. As described above, it is extremely difficult to repair such clogging in an aerator fixed to a structure in treated water.

Secondly, slurry and sludge are deposited on the bottom of a treatment tank or lake / pond where an underwater aerator is used, and it is sometimes not preferable to stir such sludge with an aerator. is there. For example, in a lake or a pond, when sludge or the like is rolled up, clay fine particles and spoiled organic matter are suspended and harmful. Therefore, it is necessary for the aerator installed in the treated water to change the water depth position depending on the condition of the treated water, but the support structure fixed in the treated water cannot cope with this. JP-A-6-27
As disclosed in No. 7691, there is a float supported on the top and bottom of an aerator by a float floated on the water surface and a weight installed on the water bottom. It follows the technical idea of the support structure fixed to the structure, and the water depth position of the aerator cannot be adjusted.

On the other hand, the underwater aerator provided with a swirling flow generating vane inside the pipe receives a vertical or horizontal, or circumferential force due to the centrifugal force of the swirling fluid. Is required. It is conceivable that a weight is suspended from the aerator to counter these vibrations. However, it is difficult to suppress the circumferential rotation of the aerator itself when the aerator body and the weight are separated from each other. Warping occurs.

Accordingly, an object of the present invention is to provide a suspension type submersible structure having a structure capable of easily repairing clogging, adjusting the position of an aerator to an arbitrary water depth, and resisting vibration caused by rotation of an internal fluid. An aerator is provided.

Another object of the present invention is that clogging can be easily repaired, the water depth can be adjusted, and
An object of the present invention is to provide an underwater support structure of an aerator which is not affected by vibrations by a swirling fluid.

[0098]

In order to achieve the first object, a submersible aerator according to the present invention is provided with a swirling flow generating means inside a cylindrical pipe through which a fluid passes, and an internal swirl outside the pipe. A processing cylinder main body integrally fixed with a weight for suppressing oscillation due to the centrifugal force of the fluid, and a tip nozzle facing the swirl flow generating means from the fluid supply side of the processing cylinder main body, and is connected via a coupling member. And an air supply pipe integrally fixed to the processing tube main body, and suspending means for supporting the processing cylinder main body and the air supply pipe integrated with the processing tube main body in the processing water in a suspended manner.

The weight is composed of a concrete, ceramic, metal or synthetic resin outer tube of a predetermined thickness surrounding the tube of the aerator. In this case, the weight outer tube also has a function as a protection member for the aerator cylindrical tube.

Preferably, the hanging means is formed by a through bolt having a lower end connected to a receiving plate below the processing tube main body by penetrating in the axial direction of the weight, and a hanging portion formed at an upper end. .

In order to achieve the second object, the underwater support structure of the aerator according to the present invention is provided with a swirling flow generating means inside a cylindrical body through which fluid flows, and an air supply pipe integrally facing the fluid supply side. Attached to the cylindrical tube body of the underwater aerator is a weight that suppresses the swing of the aerator, and
The aerator is supported in the treated water at an arbitrary depth via a suspending means provided on the cylindrical body or the weight.

[0122]

Embodiments of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, an aerator 1 of the present invention has a swirl flow generating device 2 therein, and passes gas-liquid fluid from a supply side (lower opening in the drawing) to a discharge side (upper opening in the drawing). The processing cylinder main body 3 for performing aeration and mixing by air, an air supply pipe 4 for supplying air to the fluid supply side of the processing cylinder main body 3, and a suspending means 5 for suspending the processing cylinder main body 3 in processing water in a suspended manner are essential. It is provided as a member.

The processing tube main body 3 has the above-mentioned swirling flow generator 2 fixed inside a cylindrical tube 6 having an open top and bottom.
The weight 7 is integrally fixed to the cylindrical tube 6. The weight 7 in the illustrated embodiment is made of an outer tube having a predetermined weight, such as a concrete or metal, and is integrally fitted to the outside of the cylindrical tube 6.

The air supply pipe 4 is connected to the processing cylinder main body 3 via a connecting member 9 with the tip nozzle 8 facing the internal swirling flow generator 2 from the fluid supply side of the processing cylinder main body 3. The connecting member 9 in the illustrated embodiment comprises a connecting plate 10 integrally formed perpendicularly to the outer surface of the air supply pipe 4 and a donut-shaped receiving plate 11 for supporting the processing tube main body 3 from below. By connecting the piece 12 and the receiving plate 11 to the lower end of the processing cylinder main body 3 with bolts 13, the air supply pipe 4 is integrally assembled to the processing cylinder main body 3. Further, the air supply pipe 4 connects a suction hose to the bamboo tip 14 at the rear end of the elbow.

The aerator 1 is provided with suspending means 5 for supporting the processing cylinder main body 3 and the air supply pipe 4 integral therewith in the processing water in a suspended manner. The suspending means 5 in the embodiment shown in the figure penetrates the weight 7 in the axial direction and connects the connecting member 9 of the processing tube main body 3 and the air supply pipe 4 to the elongated bolt 1.
3 and a suspension chain 16 connected to a tip ring 15 of the bolt 13. The suspension chain 16 is attached to a support member (not shown) above the liquid surface such that the suspension length can be adjusted, that is, the underwater depth position of the aerator 1 can be adjusted. Although the hanging means 5 in the embodiment shown in the drawings shows a preferred embodiment, the present invention is not limited to this, and any structure may be used as long as the processing tube main body 3 and the air supply pipe 4 are suspended in the processing water.

The swirling flow generating device 2 installed in the cylindrical tube 6 of the processing tube main body 3 includes a pair of semi-elliptical blades 17.
Have a kind vane closed between the chord side edges on the upstream side (lower side in the figure) of the crossing portion by an inverted triangular partition plate 18 that bisects the inside of the cylindrical tube body 6. The arc side edge of the blade is joined to the inner wall surface of the cylindrical tube 6 and fixed inside the cylindrical tube 6. Further, the swirling flow generating device 2 may be fixed by penetrating the flow velocity adjusting cylinder 19 in the center axis direction of the guide vane as shown in the figure.

In the aerator 1 of the embodiment shown in the figure, a plurality of agitating projections 20 for colliding the internal swirling fluid with the inner wall of the cylindrical tube 6 downstream of the swirling flow generating device 2 are fixed.

In this way, the aerator 1 supplies air from the nozzle 8 of the air supply pipe 4 to the cylindrical pipe body 6, so that the gas-liquid fluid accompanying the surrounding fluid by the buoyancy of the air is supplied by the swirling flow generator 2. It is generated in a rapidly accelerated gas-liquid mixed swirl flow, which is used for aeration.
In the aerator 1 suspended in water, the cylindrical pipe body 6 swings up and down, left and right, and circumferentially due to the centrifugal force of the fluid in the process of generating the swirling flow. In order to suppress this swing, the present invention proposes that the weight of the processing cylinder main body 3 itself be set to a weight that can resist the swing. From the above, the weight 7 of the processing cylinder main body 3 is a member for suppressing the swing, and is not a simple weight for submerging the aerator 1 in the processing water. Therefore, it is desirable that the weight 7 be set to a weight that can resist the swing according to the size of the aerator 1.

A synthetic resin material is usually used for the cylindrical tube 6, the swirling flow generator 2, and the stirring projection 20 of the processing tube main body 3, but a metal material may of course be used. Cylindrical tube 6
The weight to be fitted as the outer tube may be a concrete tube, a ceramic tube, a metal tube, a synthetic resin tube, or a combination thereof as described above.

FIG. 4 shows an underwater support structure of the aerator 1 according to the present invention. The suspension chain 16 of the suspension means 5 is mounted on a ground base so that the aerator 1 is supported at a desired depth in water. Fix it. The aerator 1 is stably supported in water by a weight 7 integrated with the processing tube main body 3,
Vibration due to the swirling flow of the internal fluid is suppressed. The suspension length of the suspension means 5 is adjusted to control the water depth position of the aerator 1 depending on the condition of the water bottom or underwater. Also,
When clogging or the like occurs, the aerator 1 is pulled up by the suspension means 5 to perform maintenance.

[0219]

The aerator of the present invention can be used suspended in the treated water by the suspending means, so that when the processing cylinder is clogged, it can be lifted out of the treated water to remove the clogging and disassemble and clean. Possible and maintenance is easy. Further, since the aerator can be installed and moved at a desired water depth position, it can be used in accordance with a change in the condition of the processing liquid tank.

Since the processing cylinder is formed by integrally fixing a weight to a cylindrical pipe body having a built-in swirling flow generator, swinging due to centrifugal force or the like of the internal fluid is suppressed, and the apparatus operates in a stable state. Therefore, the aeration effect is stabilized, and fatigue of the aerator can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a submersible aerator according to an embodiment of the present invention, and a part is shown in cross section.

FIG. 2 is a plan view of the aerator of FIG. 1;

FIG. 3 is a bottom view of the air railer of FIG. 1;

FIG. 4 is an underwater support structure of the aerator according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Aerator 2 ... Swirl flow generator 3 ... Processing cylinder main body 4 ... Air supply pipe 5 ... Suspension means 6 ... Cylindrical pipe 7 ... Weight 8 ... Nozzle 9 ... Coupling member 10 ... Connection plate 11 ... Receiving plate 12 ... Mounting 13, bolt 14, bamboo shoot 15, tip ring 16, hanging chain 17, wing plate 18, partition plate 19, flow velocity adjusting cylinder 20, stirring protrusion

[Reference number] PAS001-010

Continued on the front page F term (reference) 4D029 AA01 AB06 BB11

Claims (4)

[Claims] 1. A processing cylinder main body in which a swirling flow generating means is provided inside a cylindrical pipe through which a fluid passes, and a weight is integrally fixed outside the pipe to suppress swinging of the internal swirling fluid due to centrifugal force. An air supply pipe integrally fixed to the processing cylinder main body via a coupling member, with a front end nozzle facing the swirling flow generating means from the fluid supply side of the processing cylinder main body; And a suspending means for suspending an air supply pipe integrated with the suspended air in treated water. 2. The underwater aerator according to claim 1, wherein the weight is an outer tube made of concrete, ceramic, metal or synthetic resin having a predetermined thickness surrounding the cylindrical tube of the aerator. 3. The hanging means includes a through bolt penetrating in the axial direction of the weight, having a lower end connected to a receiving plate at a lower portion of the processing cylinder main body, and having a hanging portion formed at an upper end. The underwater aerator according to claim 1 or 2, 4. A weight that suppresses the swing of the aerator in the cylindrical pipe body of the underwater aerator in which a swirling flow generating means is provided inside the cylindrical body through which the fluid passes, and an air supply pipe is integrally formed on the fluid supply side. Underwater support of the underwater aerator to which the centrifugal force of the internal fluid is applied, wherein the aerator is supported at an arbitrary depth in the treated water via a suspending means provided on the cylindrical body or the weight, and Construction