CN211813655U

CN211813655U - Rotational flow aeration device

Info

Publication number: CN211813655U
Application number: CN202020195277.5U
Authority: CN
Inventors: 王松; 刘一山; 陈泽斌
Original assignee: Chengdu Haolaichen Environmental Protection Technology Co ltd
Current assignee: Chengdu Haolaichen Environmental Protection Technology Co ltd
Priority date: 2020-02-22
Filing date: 2020-02-22
Publication date: 2020-10-30
Anticipated expiration: 2030-02-22

Abstract

The utility model discloses a whirl aeration equipment, including the barrel, the upside of barrel is provided with the cutterbar, and the cutterbar is located swirler directly over, and swirler includes water conservancy diversion post and a plurality of guide vanes of setting on the water conservancy diversion post, and a plurality of guide vanes are fixed on the cylindrical surface, and the guide vane is arranged from bottom to top to be discontinuous spiral distribution. The upper end of the flow guide column is a plane, the middle of the flow guide column is cylindrical, the lower end of the flow guide column is conical, and the flow guide column and the barrel are concentrically arranged. The shape of water conservancy diversion piece is spiral fan-shaped, and the pitch arc of water conservancy diversion piece cooperates with the inner wall of barrel, and the exhaust end of the return bend that admits air is located the conical point portion of water conservancy diversion post lower extreme under, and the vertical setting of exhaust end. The exhaust end of the air inlet bent pipe of the device is vertically upward, so that the aerator is better stabilized, the shaking is not generated, and the torsion of the bent part of the air pipe is reduced. The flow deflectors are distributed in a spiral shape, and the improvement of dissolved oxygen is facilitated. The resistance of the bottom end area of the cylinder body is small, the resistance of water circulation is reduced, and the energy consumption of aeration is reduced.

Description

Rotational flow aeration device

Technical Field

The utility model relates to the field of wastewater treatment equipment, in particular to a rotational flow aeration device.

Background

The aerobic treatment of the wastewater refers to degrading and digesting organic matters under the conditions of proper carbon-nitrogen ratio, dissolved oxygen and the like in the presence of microorganisms, and finally decomposing the organic matters into CO₂、H₂And (3) biochemical process of small molecules such as O and the like. In order to obtain better treatment effect, the content of dissolved oxygen in the wastewater is 2-4 mg.L^-1Meanwhile, the aerobic bacteria can perform aerobic respiration, so that the organic matters in the wastewater are fully degraded. In general, the dissolved oxygen content in wastewater is not sufficient for the aerobic bacteria to decompose organic matters, and in the aerobic treatment, oxygen needs to be supplemented into water, namely aeration is carried out, and oxygen molecules in the air can be dispersed into the sewage through aeration.

The aeration needs higher kinetic energy to fully disperse the oxygen in the air into the water, so as to meet the requirements of aerobic bacteria. The aerator is an important device in the aeration process, different types of aerators are different in structure and principle, and the aeration effect and the power consumption are greatly different. The cyclone aerator is a novel aerator, has the advantages of high oxygen utilization rate, small pressure loss, difficult blockage, long service life, simple maintenance, low energy consumption, small sludge amount and the like, is widely applied to wastewater treatment in industries such as municipal administration, papermaking, printing and dyeing, chemical industry, food, machining, pharmacy and the like, and is the best choice for replacing the traditional oxygenation aeration mode at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a rotational flow aeration device.

The purpose of the utility model is realized through the following technical scheme:

a cyclonic aeration apparatus comprising:

the upper end of the flow guide column is a plane, the middle of the flow guide column is cylindrical, and the lower end of the flow guide column is conical;

the flow deflector is in a spiral sector shape;

the cyclone comprises the guide column and a plurality of guide vanes arranged on the guide column, the guide vanes are fixed on the surface of the cylinder, and the guide vanes are arranged from bottom to top and are distributed in an intermittent spiral manner;

and the exhaust end of the air inlet bent pipe is positioned right below the conical tip part at the lower end of the flow guide column, and the exhaust end is vertically arranged.

Furthermore, the flow guide column is arranged in the middle of the cylinder body, and the flow guide column and the cylinder body are concentrically arranged.

Further, the arc line of the guide vane is matched with the inner wall of the cylinder.

Further, the angle of the central angle of the guide vane is 180 °, 120 °, 90 °, 60 °, 45 ° and 30 °.

Further, the air inlet bent pipe is arranged at the lower part of the cylinder.

Further, a cutter is arranged on the upper portion of the barrel body, and the cutter comprises a plurality of cutting pieces.

Further, the cutter comprises 6-8 cutting pieces.

The utility model has the advantages that:

(1) the exhaust end of the air inlet bent pipe is vertically arranged upwards, so that the aerator can be better stabilized, the shaking is not generated, and the torsion of the bent part of the air pipe is reduced.

(2) The flow deflectors are distributed spirally, so that air can be better dispersed into water, and the improvement of dissolved oxygen is facilitated.

(3) The resistance of the bottom end area of the cylinder body is small, the resistance of water circulation is reduced, and the energy consumption of aeration is reduced.

Drawings

FIG. 1 is a schematic view of a first prior art cyclonic aerator;

FIG. 2 is a schematic diagram of a second prior art cyclonic aerator;

FIG. 3 is a schematic view of a third prior art cyclonic aerator;

FIG. 4 is a schematic view of a fourth prior art cyclonic aerator;

FIG. 5 is a schematic view of a fifth prior art cyclonic aerator;

FIG. 6 is a schematic structural view of a cyclone aeration apparatus;

FIG. 7 is a schematic front view of the cutter and cartridge assembly;

FIG. 8 is a schematic top view of the cutter and cartridge assembly;

FIG. 9 is a schematic view of the cyclone and the barrel assembly;

FIG. 10 is a schematic view of a swirler with two baffles;

FIG. 11 is a schematic top view of a swirler with two baffles;

FIG. 12 is a schematic view of a swirler with three baffles;

FIG. 13 is a schematic top view of a three baffle swirler;

FIG. 14 is a schematic view of a four-vane swirler;

fig. 15 is a schematic top view of a swirler with four baffles.

In the figure, 100-cutter, 200-swirler, 300-cylinder, 400-air inlet elbow.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

The following five traditional cyclone aerators have the characteristics that:

the first cyclone aerator comprises: as shown in fig. 1, in the figure, 1 is a cutter, 2 is a cyclone, 3 is a cylinder, 4 is an air inlet elbow, and 5, 6 and 7 are all related elements for fixing an aerator. The multi-layer cutter 1 and the cyclone 2 of the aerator have similar structures and are composed of a plurality of short teeth which are fixed on the inner wall of the cylinder body, extend into the cylinder along the radial direction and are distributed in layers. The pressure air is introduced from the bottom end of the cylinder 3 through the air inlet elbow 4 and passes through the swirler 2 and the cutter 1 from bottom to top.

Disadvantages of the first type of cyclonic aerator: the cyclone consists of a plurality of short teeth fixed on the inner wall of the cylinder, and the air flow collides with the short teeth when passing through the cyclone to generate impact force. The cyclone has weak vortex action, high kinetic energy consumption and poor air dispersion effect.

A second type of cyclone aerator: as shown in fig. 2, in the figure, 1 is a cutter, 2 is a swirler, 3 is a cylinder, and 4 is an intake elbow. The cutters 1 and the cyclones 2 of the aerator are arranged in the cylinder body from bottom to top at intervals. The cutter 1 is composed of a plurality of short teeth which are fixed on the inner wall of the cylinder body, extend into the cylinder along the radial direction and are distributed in layers. The cyclone consists of many wings distributed along the circumference, the wings have a certain inclination angle along the axial direction of the cylinder, one end of the wing is fixed on the circumference, and the other end extends to the circumference center. The pressure air is introduced from the bottom end of the cylinder 3 through the air inlet elbow 4, passes through the swirler 2 and the cutter 1 from bottom to top to generate the effects of swirling flow and cutting, and the air is dispersed in water.

The second type of cyclone aerator has the following disadvantages: the cyclone consists of a plurality of fins with inclination angles fixed on the inner wall of the cylinder, air flow collides with the fins when passing through the cyclone to generate impact force, and the air-water flow generates certain vortex action due to the certain inclination angles of the fins. However, the cyclone has weak vortex action, high kinetic energy consumption and poor air dispersion effect.

A third type of cyclonic aerator: as shown in fig. 3, the gas distribution pipe 6, the cyclone 7 and the cutter 8 are fixed on the rotating shaft 9. The cyclone 7 consists of a gyro-shaped rotor and inclined fan blades. When the air-water flow passes through the inclined fan blades of the swirler 7, rotational flow is generated under the flow guiding action of the fan blades. Meanwhile, the air distribution pipe 6, the swirler 7 and the cutter 8 are driven to rotate under the action of the fan blades.

The third type of cyclonic aerator has the following disadvantages: when the cyclone aerator works, the air distribution pipe 6, the cyclone 7 and the cutter 8 are fixed on the same shaft 9 and rotate together under the impact of airflow. Therefore, more energy can be consumed, the rotational flow speed is greatly reduced, and the air dispersion effect is reduced.

A fourth cyclonic aerator: as shown in fig. 4, in the figure, 6 is a cylinder, 7 is a straight half-blade, 8 is a guide column, and the straight half-blade 7 and the guide column 8 form a cyclone. A plurality of straight half blades 7 are fixed between the guide column 8 and the cylinder 6. The air-water flow is pulverized by the rotary mixing when passing through the straight half blade 7.

The fourth type of cyclonic aerator has the following disadvantages: the flow deflector is straight, and when air-water flow passes through the flow deflector, the vortex effect is poor, the resistance is large, so that the energy consumption is large, and the air dispersion effect is low.

A fifth type of cyclone aerator: as shown in fig. 5, fig. 2 is a swirler composed of a guide vane and a guide column, and fig. 3 is a cutter. The flow deflector is in a spiral sheet shape, is embedded in the annular area of the flow guide column and the cylinder body, and rotates for a circle along the flow guide column. The air-water flow rises along the spiral flow deflector in a rotating way, and a strong vortex effect is generated.

The fifth type of the cyclone aerator has the following disadvantages: the spiral flaky flow deflector has strong closure, large resistance of gas-water flow, high energy consumption and reduced air dispersion effect.

Referring to fig. 6-15, the present invention provides a technical solution:

a cyclone aeration apparatus comprises a barrel 300, wherein a cutter 100 is arranged on the upper side of the barrel 300, a cyclone 200 is arranged in the middle of the barrel 300, and an air inlet elbow 400 is arranged on the lower side of the barrel. The cutter 100 is located right above the cyclone 200, the cyclone 200 is located right above the exhaust end of the air inlet elbow 400, preferably, the upper end of the guide column is a plane, the middle is a cylinder, the lower end is a cone, the guide column is arranged in the middle of the cylinder, and the guide column and the cylinder 300 are arranged concentrically. The shape of water conservancy diversion piece is spiral fan-shaped, and the pitch arc of water conservancy diversion piece cooperates with the inner wall of barrel, and the exhaust end of return bend 400 that admits air is located the conical point portion of water conservancy diversion post lower extreme under, and the vertical setting of exhaust end.

In some embodiments, the cutter 100 is arranged on the upper part of the barrel, the cutter 100 comprises 6-8 cutting pieces, and the device adopts 6 cutting pieces.

In some embodiments, the cyclone 200 includes a flow guiding column and a plurality of flow guiding plates disposed on the flow guiding column, wherein the plurality of flow guiding plates are fixed on the cylindrical surface, and the flow guiding plates are arranged from bottom to top and are discontinuously and spirally distributed. The central angle of the guide vane is 180 degrees, 120 degrees, 90 degrees, 60 degrees, 45 degrees, 30 degrees and the like, and when the central angle of the guide vane is 180 degrees, the guide column is provided with two guide vanes.

In some embodiments, when the selected central angle is 120 °, the guide post is provided with three guide vanes.

In some embodiments, when the selected central angle is 90 °, the guide column is provided with four guide vanes.

In some embodiments, when the selected central angle is 60 °, the guide post is provided with 6 guide vanes.

The exhaust end of the air inlet bent pipe of the device is vertically arranged upwards, so that the aerator can be better stabilized, the shaking is not generated, and the torsion of the bent part of the air pipe is reduced. The resistance of the bottom end area of the cylinder body is small, the resistance of water circulation is reduced, and the energy consumption of aeration is reduced.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A cyclonic aeration apparatus comprising:

the flow deflector is in a spiral sector shape;

2. A cyclonic aeration apparatus according to claim 1, wherein: the flow guide column is arranged in the middle of the cylinder body, and the flow guide column and the cylinder body are arranged concentrically.

3. A cyclonic aeration apparatus according to claim 2, wherein: the arc line of the flow deflector is matched with the inner wall of the cylinder body.

4. A cyclonic aeration apparatus according to claim 3, wherein: the central angle of the guide vane is 180 degrees, 120 degrees, 90 degrees, 60 degrees, 45 degrees and 30 degrees.

5. A cyclonic aeration apparatus as claimed in claim 4, wherein: the air inlet bent pipe is arranged at the lower part of the cylinder body.

6. A cyclonic aeration apparatus as claimed in claim 5, wherein: the cutter is arranged on the upper portion of the barrel and comprises a plurality of cutting pieces.

7. A cyclonic aeration apparatus as claimed in claim 6, wherein: the cutter comprises 6-8 cutting pieces.