CN111792737A

CN111792737A - Novel from rotating aeration device

Info

Publication number: CN111792737A
Application number: CN202010551059.5A
Authority: CN
Inventors: 李德伟; 罗雲鑫; 黄子格; 汤爱萍; 陈丽奇; 刘青云
Original assignee: Nanchang Hangkong University
Current assignee: Nanchang Hangkong University
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2020-10-20

Abstract

The invention discloses a novel self-rotating aeration device, which comprises a shell and an inverted umbrella-shaped impeller arranged in the shell, wherein a net-shaped bubble breaking device is arranged under the inverted umbrella-shaped impeller, an air outlet device is arranged under the net-shaped bubble breaking device, the inverted umbrella-shaped impeller, the net-shaped bubble breaking device and the air outlet device are connected through a connecting rod, the connecting rod is hollow, the air outlet device is communicated with the inside of the connecting rod, an air inlet pipe with the inner diameter smaller than that of the connecting rod is introduced into the lower part of the connecting rod, and air outlet holes are uniformly distributed in the air inlet pipe. The aeration device rotates by means of the counterforce of bubbles coming out of the aeration holes, the upper water body is lifted along the arc-shaped blades under the action of centrifugal force and is thrown to the periphery to form a hydraulic jump, a low-pressure area is formed at the rear side of the rotating blades, gas is involved, the phenomenon of poor aeration effect of upper liquid of the traditional aeration device is improved, the whole device is aerated dynamically, in multiple directions and in multiple forms, the aeration is uniform, aeration dead angles are avoided, and the aeration oxygenation efficiency is improved.

Description

Novel from rotating aeration device

Technical Field

The invention relates to the technical field of water treatment, in particular to a novel self-rotating aeration device.

Background

At present, the aeration energy consumption in a sewage treatment plant accounts for 60 to 70 percent of the total energy consumption. Most sewage treatment plants use for single fixed aeration, have the not good, aeration dead angle of water upper aeration effect, later stage maintenance inconvenience, the high scheduling problem of running cost.

Disclosure of Invention

The invention aims to solve the problems that: provides a novel self-rotating aeration device which is used for solving the problems.

The technical scheme provided by the invention for solving the problems is as follows: the utility model provides a novel from rotating aeration equipment, is in including shell and setting the inside reverse umbrella type impeller of shell, reverse umbrella type impeller under be equipped with netted broken bubble device, netted broken bubble device under be provided with air outlet means, reverse umbrella type impeller, netted broken bubble device, air outlet means be connected by the connecting rod, the connecting rod in be hollow, air outlet means with the inside intercommunication of connecting rod, the connecting rod lower part let in the intake pipe that is less than the connecting rod internal diameter, the intake pipe on evenly cloth have the venthole.

Preferably, the air outlet device is composed of four special aeration pipes arranged in a cross shape, the special aeration pipes are in a streamline shape, and aeration holes are arranged below the right side of each special aeration pipe.

Preferably, the inverted umbrella-shaped impeller is composed of four arc-shaped blades with stirring function and a cross rod.

Preferably, the mesh-shaped bubble breaking device is internally distributed with hole sites for increasing water flow turbulence, and the hole sites are internally provided with inner side needle-shaped objects facing the inner sides of the hole sites and used for breaking large bubbles and peripheral needle-shaped objects arranged on the periphery of the hole sites.

Preferably, a completely sealed bearing is arranged between the air inlet pipe and the connecting rod, and the completely sealed bearing, the air inlet pipe and the connecting rod are welded.

Preferably, the outer surfaces of the inverted umbrella-shaped impeller, the reticular bubble breaking device and the air outlet device are uniformly distributed with nano self-cleaning coatings for preventing stains from accumulating.

Compared with the prior art, the invention has the advantages that: in the invention, the whole aeration device rotates by the counterforce of bubbles from aeration holes, the upper water body rotates along with the inverted umbrella-shaped impeller, under the action of centrifugal force, the water body is lifted along the blades and thrown to the periphery to form water jump, the liquid level is in a violent stirring state, after the rotation, the rear side of the arc-shaped blade forms a low-pressure area to draw air in, meanwhile, the inverted umbrella-shaped impeller generates centrifugal plug flow action when rotating, so that the water body circulates, the liquid film is continuously updated, and the rotating arc-shaped blade can cut the bubbles, thereby improving the aeration efficiency and improving the phenomenon of poor oxygenation effect of the upper water body; the lower water body is stirred by the air outlet device, air-water collision is severe, and the oxygenation effect is good; the reticular bubble breaking device in the middle can puncture bubbles into smaller bubbles, and meanwhile, the turbulence degree of water flow is greatly improved when the water flow passes through the holes of the device. The rotation of aeration equipment has the effect that promotes liquid, makes the abundant circulation flow of liquid to make gas, liquid contact interface constantly renew, the spiral rising motion is made to the aeration bubble, compares in traditional aeration, prolongs bubble motion path and increases gas-liquid contact time and area of contact promptly, improves oxygen transfer efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a general schematic of the present invention;

FIG. 2 is a schematic structural view of a reticulated bubble-breaking device according to the present invention;

FIG. 3 is a schematic view of the structure of the needle-punched objects at the hole sites in the reticulated foam breaker of the present invention;

fig. 4 is a cross-sectional view of a specially made aerator pipe of the invention.

The attached drawings are marked as follows: the device comprises an inverted umbrella-shaped impeller 1, arc-shaped blades 11, a cross rod 12, a reticular bubble breaking device 2, a net disk 21, hole sites 22, inner side needling-shaped objects 221, peripheral vertically downward needling-shaped objects 220, an air outlet device 3, a special aeration pipe 31, aeration holes 32, a completely sealed bearing 4, an air outlet hole 5, an air inlet pipe 6, a sewage water inlet 7, a connecting rod 8 and a shell 9.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present invention can be fully understood and implemented.

Referring to fig. 1, in a preferred embodiment of the present invention, a novel self-rotating aeration device comprises a housing 9 and an inverted umbrella-shaped impeller 1 arranged above the inside of the housing 9, wherein the inverted umbrella-shaped impeller 1 is mainly composed of four arc-shaped blades 11, a reticular bubble breaking device 2 is arranged in the middle of the device, hole sites 22 are arranged in the reticular bubble breaking device 2, the needle-punching shape in the hole sites is divided into two parts, one part is an inner side needle-punching object 221 facing the inner side of the hole sites 22, and the other part is a peripheral needle-punching object 220 arranged at the periphery of the hole sites 22; the lower part of the device is provided with an air outlet device 3 which is made of four specially-made aeration pipes 31, an aeration hole 32 is arranged below the right side of each specially-made aeration pipe in an inclined mode, the whole aeration device rotates by means of the reaction force of bubbles coming out of the aeration hole, the upper water body is lifted along the arc-shaped blades 11 under the action of centrifugal force and is thrown to the periphery to form a hydraulic jump, a low-pressure area is formed at the rear side of each rotating blade to draw in gas, the phenomenon that the aeration effect of upper liquid of the traditional aeration device is poor is improved, the whole device is dynamic, multi-directional and multi-form aeration, the aeration is uniform, the aeration dead angle is.

As a preferred embodiment of the present invention, it also has the following technical features:

in the embodiment, the rotary power of the device is the reaction force of the aeration opening, and compared with a device using a motor as power, the device has the advantages of simple structure and energy conservation.

In this embodiment, netted broken bubble device 2 can be punctured the bubble into littleer bubble, and the great degree improves the degree of disorder of rivers when rivers pass the hole of device simultaneously, effectively improves aeration efficiency, and the size, the shape of netted broken bubble device 2 can be designed according to the actual conditions of aeration tank.

In this embodiment, the inverted umbrella impeller is composed of four arc-shaped blades 11 and a cross bar 12, the arc-shaped blades 11 can increase the contact area with the liquid to increase the volume of the negative pressure region, the blades have the capacity of chopping bubbles under the rotation condition, and the cross bar 12 is used for reinforcing the inverted umbrella impeller.

In this embodiment, the special aeration pipe 31 is streamlined to reduce resistance in water flow, and the aeration holes 32 are provided obliquely below the right side of the aeration pipe to prevent clogging due to accumulation of falling dirt.

In the embodiment, nano self-cleaning coatings are uniformly distributed on the outer surfaces of the inverted umbrella-shaped impeller 1, the reticular bubble breaking device 2 and the air outlet device 3, so that the strength, the scrubbing resistance and the corrosion resistance of the device are improved.

In this embodiment, the rotation of aeration equipment has the effect that promotes liquid, makes the abundant circulation flow of liquid to make gas, liquid contact interface constantly renew, avoid the aeration dead angle, the spiral rising motion is made to the aeration bubble, compares traditional aeration, prolongs bubble motion path and increases gas-liquid contact time and area of contact promptly, improves oxygen transfer efficiency.

The foregoing is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.

Claims

1. A novel from rotating aeration equipment which characterized in that: be in including shell (9) and setting a reverse umbrella type impeller (1) of shell (9) inside, reverse umbrella type impeller (1) under be equipped with netted bubble breaking device (2), netted bubble breaking device (2) under be provided with air outlet means (3), reverse umbrella type impeller (1), netted bubble breaking device (2), air outlet means (3) connect by connecting rod (8), connecting rod (8) in be hollow, air outlet means (3) with connecting rod (8) inside intercommunication, connecting rod (8) lower part let in intake pipe (6) that are less than the connecting rod internal diameter, intake pipe (6) on even cloth have venthole (5).

2. A novel self-rotating aeration device according to claim 1, characterized in that: the air outlet device (3) is composed of four special aeration pipes (31) arranged in a cross shape, the special aeration pipes (31) are in a streamline shape, and aeration holes (32) are arranged below the right side of the special aeration pipes (31).

3. A novel self-rotating aeration device according to claim 1, characterized in that: the inverted umbrella-shaped impeller (1) is composed of four arc-shaped blades (11) with stirring function and a cross rod (12).

4. A novel self-rotating aeration device according to claim 1, characterized in that: hole sites (22) used for increasing water flow disorder are fully distributed in the reticular bubble breaking device (2), and inner side needle-punched objects (221) used for breaking large bubbles and facing to the inner side of the hole sites (22) and peripheral needle-punched objects (220) arranged on the periphery of the hole sites (22) are arranged in the hole sites (22).

5. A novel self-rotating aeration device according to claim 1, characterized in that: the air inlet pipe (6) and the connecting rod (8) are provided with a complete sealing bearing (4) therebetween, and the complete sealing bearing (4) is welded with the air inlet pipe (6) and the connecting rod (8) therebetween.

6. A novel self-rotating aeration device according to any one of claims 1 to 5, wherein: the outer surfaces of the inverted umbrella-shaped impeller (1), the reticular bubble breaking device (2) and the air outlet device (3) are uniformly distributed with nano self-cleaning coatings for preventing stains from accumulating.