CN217498817U

CN217498817U - Rotational flow aeration device

Info

Publication number: CN217498817U
Application number: CN202221443737.7U
Authority: CN
Inventors: 王松; 刘一山; 刘中; 王姝涵
Original assignee: Chengdu Haolaichen Environmental Protection Technology Co ltd
Current assignee: Chengdu Haolaichen Environmental Protection Technology Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-09-27
Anticipated expiration: 2032-06-09

Abstract

The utility model discloses a rotational flow aeration device, which comprises a cylinder body, wherein a cutter, a cyclone and an air inlet bent pipe are sequentially arranged in the cylinder body from top to bottom; the exhaust end of the air inlet bent pipe is positioned right below the swirler and is vertically arranged; the air inlet end of the air inlet bent pipe is horizontally arranged and extends to the outer side of the cylinder body, and the end head of the air inlet bent pipe is provided with a flange plate. This aeration equipment's cutterbar is formed by alternate stack of two kinds of cutterbar monomers of fin shape cutting piece and tooth post shape cutting piece, and the vortex effect that can high-efficiently utilize the swirler to produce among the aeration process improves the mixed effect of waste water and air, promotes the absorption of waste water to oxygen in the air, increases the dissolved oxygen concentration in the waste water, reduces the energy consumption of waste water aeration.

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 waste water refers to the participation of microorganismsUnder the conditions of proper carbon-nitrogen ratio and dissolved oxygen, the organic matter is degraded and digested, and finally decomposed into CO ₂ 、H ₂ And (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 ^-1 Meanwhile, the aerobic bacteria can perform biochemical action, so that organic matters in the wastewater are fully degraded and digested. 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 following six 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 cyclone 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.

A sixth type of swirl aerator: as shown in fig. 6, 1 is a cutter in the shape of a mushroom head, and 2 is a swirler. The air-water flow rises along the rotation of the guide vane and collides with the cutter to generate turbulence, so that the air and the water are mixed.

The sixth type of the cyclone aerator has the following disadvantages: the cutting blade of the aerator is in the shape of mushroom head, the surface of the cutting blade is smooth, the shearing action is relatively weak, and the improvement of the air dispersion effect is not facilitated.

SUMMERY OF THE UTILITY MODEL

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

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

a rotational flow aeration device comprises a cylinder body, wherein a cutter, a rotational flow device and an air inlet bent pipe are sequentially arranged in the cylinder body from top to bottom;

the exhaust end of the air inlet bent pipe is positioned right below the swirler and is vertically arranged; the air inlet end of the air inlet bent pipe is horizontally arranged and extends to the outer side of the cylinder body, and the end head of the air inlet bent pipe is provided with a flange plate;

the cutter and the barrel are concentrically arranged, and the outer wall of the cutter is in sealing fit with the inner wall of the barrel.

The cutter comprises two cutter monomers, wherein the cutting blade of the first cutter monomer is in a wing shape, and the cutting blade of the second cutter monomer is in a tooth column shape;

two cutter monomers are alternately superposed from bottom to top in sequence to form a cutter;

barrel: the air inlet bent pipe is hollow cylindrical and used for fixing the cutter, the swirler and the air inlet bent pipe and forming an aeration chamber;

a cutter: the cutter is arranged at the upper end in the cavity of the cylinder body;

a swirler: the swirler is arranged below the cutter;

the air inlet bent pipe is arranged below the cyclone, the air outlet end of the air inlet bent pipe is positioned right below the cyclone and is vertically arranged, and the air inlet end of the air inlet bent pipe is horizontally arranged.

Each cutter unit comprises 6-8 cutting pieces, and the number of the two cutter units is equal.

The utility model has the advantages that:

(1) the oblique direction of the wing pieces of the wing-shaped cutting blade is the same as the rotational flow direction, so that a flow guiding effect is realized on the rotating fluid, the resistance of air-water mixing is reduced, and the energy consumption in the wastewater aeration process is reduced;

(2) the thin teeth of the tooth column-shaped cutting blade can generate severe micro-turbulence to intensify gas-water mixing and improve the gas-water mixing effect, thereby being beneficial to improving the content of dissolved oxygen in wastewater.

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 diagram of a sixth prior art cyclonic aerator;

FIG. 7 is a schematic structural view of a cyclone aeration apparatus;

FIG. 8 is a front view of the cutter;

FIG. 9 is a front and side view of a tab shaped cutting blade;

FIG. 10 is a front and side view of a toothed cylindrical cutting blade;

in the figure, 100-cylinder, 200-cutter, 300-swirler, 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.

Referring to fig. 7 to 10, the present invention provides a technical solution:

as shown in fig. 7, a swirling aeration apparatus includes a barrel 100, a cutter 200 is disposed at an upper side of the interior of the barrel 100, a swirler 300 is disposed at a middle portion thereof, and an intake elbow 400 is disposed at a lower side thereof. The cutter 200 is located directly above the swirler 300, and the swirler 300 is located directly above the exhaust end of the inlet elbow 400.

As shown in fig. 8, the cutter 200 is formed by stacking two kinds of single cutter bodies, namely, a wing-shaped cutter body and a tooth-column-shaped cutter body, alternately from bottom to top, wherein the two kinds of single cutter bodies are respectively the first kind of single cutter body, as shown in fig. 9, the first kind of single cutter body is in the shape of a wing, and as shown in fig. 10, the second kind of single cutter body is in the shape of a tooth-column.

The diameters of the two cutter units are the same, and the two cutter units are matched with the inner wall of the cylinder 100, the exhaust end of the air inlet elbow 400 is positioned under the cyclone 300 and is vertically arranged, the air inlet end of the air inlet elbow 400 is horizontally arranged and extends out of the cylinder 100, and the end head of the air inlet elbow 400 is provided with a flange plate.

In some embodiments, the cutter 200 is arranged at the upper part of the barrel 100, the cutter units of the cutter 200 comprise 6-8 cutting pieces, the device adopts 6 cutting pieces, the number of the two cutting pieces is the same, in the embodiment, three cutting pieces are respectively arranged, and the cutting pieces are sequentially overlapped alternately in a wing shape and a tooth column shape from the lower end.

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 rotational flow aeration device is characterized by comprising a cylinder (100), wherein a cutter (200), a cyclone (300) and an air inlet bent pipe (400) are sequentially arranged in the cylinder (100) from top to bottom;

the exhaust end of the air inlet elbow (400) is positioned right below the swirler (300), and the exhaust end is vertically arranged; the air inlet end of the air inlet elbow (400) is horizontally arranged and extends to the outer side of the cylinder body (100), and the end head of the air inlet elbow is provided with a flange.

2. A cyclonic aeration apparatus according to claim 1, wherein: the cutter (200) and the barrel (100) are concentrically arranged, and the outer wall of the cutter (200) is in sealing fit with the inner wall of the barrel (100).

3. A cyclonic aeration apparatus according to claim 1, wherein: the cutter (200) comprises two cutter monomers, wherein the cutting blade of the first cutter monomer is in a wing shape, and the cutting blade of the second cutter monomer is in a tooth column shape;

the two cutter monomers are alternately superposed from bottom to top in sequence to form a cutter (200).