CN116040822A

CN116040822A - Different-direction double-vortex aerator and aeration method

Info

Publication number: CN116040822A
Application number: CN202211692898.4A
Authority: CN
Inventors: 王浩成; 史建波; 孙萌萌; 田凯; 刘雅坤
Original assignee: Shandong Liyuan Haida Environmental Engineering Co ltd
Current assignee: Shandong Liyuan Haida Environmental Engineering Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-02

Abstract

The invention relates to an anisotropic double vortex aerator, mixing nozzle openings are arranged on the cylinder wall at the top and bottom of the aerator at intervals, vortex airflow strips are arranged in the mixing nozzle openings, an air inlet pipe horizontally extending into the cylinder body is arranged in the middle of the cylinder body of the aerator, a vortex anisotropic ball is arranged on the air inlet pipe in the cylinder body, and spiral cutters arranged in the cylinder body are arranged at the air outlet of the air inlet pipe and at the positions of the mixing nozzle openings. The invention also relates to an aeration method, gas enters from the air inlet pipe, is sprayed to the inner cylinder after being acted by the mixing nozzle and the vortex impeller, and is sprayed to the outside of the aeration cylinder after being acted by the vortex airflow strips at the opening of the spiral cutter and the mixing nozzle. The invention can form a large-range vortex state for the gas, the spiral cutter can divide the bubbles for multiple times in multiple stages, so that the bubbles are smaller and more uniform, and the internal gas is in a vortex state, thereby improving the mass transfer effect.

Description

Different-direction double-vortex aerator and aeration method

Technical Field

The invention belongs to the field of sewage treatment equipment, and relates to an aerator, in particular to a different-direction double-vortex aerator and an aeration method.

Background

The aerator is a necessary device for aeration and oxygenation of water supply and drainage. The rotary mixing type aerator is common aeration equipment, and the working principle is as follows: when the air flow enters the aerator, the air flow firstly passes through the two spiral cutting systems, then enters the multi-layer zigzag aeration head at the lower layer, and is subjected to multi-layer cutting at the multi-layer zigzag aeration head, so that the air bubbles are cut into micro-air bubbles, and finally the micro-air bubbles are sprayed out from the nozzle opening.

The existing mixing nozzle opening is provided with a cylindrical mixing nozzle opening, a trapezoid mixing nozzle opening and a spiral mixing nozzle opening, but only the external structure is changed, the internal structure is very single, the structure for preventing the mixing nozzle opening from being blocked is not provided, and the power efficiency, the oxygen utilization rate and the like are only unilaterally increased during working, so that the problem of blocking can occur in the gas spraying process.

In addition, the existing aerator has insufficient power efficiency when air flows in, and is easy to cause the problem of insufficient oxygen supply; the residence time of the air flow in the aerator is short, which is easy to cause the problem of low oxygen utilization rate; the material used is too simple, so that the external and internal accessories are easy to replace frequently, and the construction cost is greatly increased; the internal structure is too simple, stirring efficiency is low, mixed liquid and water are not completely mixed, and COD and ammonia nitrogen removal efficiency is low.

Disclosure of Invention

The invention aims to provide the anisotropic double-vortex aerator and the aeration method which are scientific and reasonable in structural design, good in mass transfer effect, high in oxygen utilization rate, high in power efficiency, sufficient in stirring and mixing, cost-saving and easy to realize.

The invention solves the technical problems by the following technical proposal:

the utility model provides an anisotropic two vortex aerator, includes the aeration tube, its characterized in that: still include top cap, base, intake pipe, the different ball of vortex, helical cutter and vortex air current strip extend its circumference interval on the top and the bottom section of thick bamboo wall of aeration tube and be provided with the mixing nozzle mouth, install the vortex air current strip in the mixing nozzle mouth, top cap and base install respectively in the top and the bottom section of thick bamboo mouth department of aeration tube, be equipped with the intake pipe that the level stretched into in the barrel at the barrel middle part of the aeration tube, install the different ball of vortex in the inside intake pipe of barrel, all be provided with the helical cutter of installing in the barrel in the gas outlet department and each mixing nozzle mouth department of intake pipe.

The vortex anisotropic ball comprises a ball body, a mixing nozzle and a vortex impeller, wherein the ball body is a hollow ball body, the mixing nozzle is arranged on the rear end face of the ball body, the vortex impeller is arranged on the front end face and the upper end face and the lower end face of the ball body, and the vortex impeller on the upper end face and the lower end face is exposed in the aeration cylinder.

The aeration cylinder is composed of an outer cylinder and an inner cylinder, wherein the inner cylinder is nested in the outer cylinder, the outer cylinder is made of ABS material, and the inner cylinder is made of PE material.

An aeration method of an anisotropic double vortex aerator is characterized in that: the method comprises the following steps:

step 1, gas enters an air inlet pipe extending into the aeration cylinder from an aeration main pipe, and the air inlet pipe sends the gas to a vortex flow anisotropic ball;

step 2, under the action of the vortex anisotropic ball, the gas makes the inner cylinder in a large-range vortex state, and simultaneously carries out mixing and stirring: the gas is conveyed to the spiral cutters at the upper side and the lower side of the gas outlet of the gas inlet pipe in an opposite direction by the vortex impeller at the front end of the vortex anisotropic ball; the gas is conveyed to four spiral cutters at the top and the bottom by vortex impellers at the top and the bottom of a vortex anisotropic ball in an anisotropic way, the spiral cutting strips fully cut the gas for multiple times in multiple stages, spiral ascending and spiral descending are carried out to form vortex micro bubbles, the top and the bottom simultaneously suck side flow fluid and power fluid to carry out strong mixing and stirring effects, and meanwhile, the gas in the whole range inside the inner cylinder is completely in a vortex state, and pressure energy is instantly converted into kinetic energy in the inner cylinder;

and 3, forming negative pressure in the aeration cylinder by the tiny bubbles with pressure in a vortex state, deeply cutting the gas by virtue of vortex airflow strips in four symmetrically distributed mixing nozzle openings through energy exchange, enhancing the vortex state in the inner cylinder, carrying out strong mixing and stirring, and finally accelerating discharge out of the aeration cylinder.

The invention has the advantages and beneficial effects that:

1. according to the anisotropic double-vortex aerator and the aeration method, through the design of the internal vortex anisotropic ball, the gas can form a large-range vortex state, the spiral cutter in the inner cylinder can divide the bubbles for multiple times, so that the bubbles are smaller and more uniform, and the internal gas is in a vortex state, so that the mass transfer effect is improved.

2. According to the anisotropic double-vortex aerator and the aeration method, through the design of the vortex airflow strips in the cylindrical mixing nozzle opening, deep cutting can be carried out on gas, the problem that nozzles in the traditional aerator are easy to block is solved, even if aeration is stopped and restarted, blocking phenomenon can not occur at the gas outlet, the vortex airflow strips can fully mix the deep-cut gas with mixed liquid outside an aeration tank and sewage, and the mixed liquid at the gas outlet position of the aerator is purged rapidly, so that the effects of no blocking and full mixing are achieved.

3. According to the anisotropic double-vortex aerator and the aeration method, through the design of the three vortex impellers on the vortex anisotropic ball, the effect of the stirrer can be achieved, the problem that the effects of COD removal, denitrification and dephosphorization are reduced due to incomplete mixing of mixed liquid and water in an aeration tank in the traditional aerator due to uneven stirring is solved, the purposes of preventing sludge deposition bottom, being high in stirring and mixing efficiency and good in COD removal, denitrification and dephosphorization removal effect are achieved, and compared with the traditional aerator, the stirring efficiency of the anisotropic double-vortex aerator is improved by more than one time.

4. According to the anisotropic double-vortex aerator and the aeration method, through the design of the conical mixing nozzle on the vortex anisotropic ball, dissolved oxygen in water can be kept in a stable state continuously, the problems of low dissolved oxygen in water caused by insufficient oxygen supply and low oxygen utilization rate in the traditional aerator are solved, the conical mixing nozzle can continuously spray gas, the effect is not reduced due to the fact that the gas is continuously sprayed, and the ideal effects of high oxygen utilization rate and sufficient oxygen supply are achieved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the vortex finder of the present invention;

FIG. 3 is a schematic view of the installation of the present invention on a main aeration pipe;

fig. 4 is a top view of fig. 3.

Reference numerals

1-mixing nozzle, 2-vortex airflow bar, 3-top cover, 4-spiral cutter, 5-vortex anisotropic ball, 6-base, 7-air inlet pipe, 8-vortex impeller, 9-ball, 10-mixing nozzle, 11-aeration cylinder.

Detailed Description

The invention is further illustrated by the following examples, which are intended to be illustrative only and not limiting in any way.

An anisotropic double vortex aerator comprises an aerator cylinder 11, and is innovative in that: the aerator comprises an outer cylinder and an inner cylinder, wherein the inner cylinder is nested in the outer cylinder, the outer cylinder is made of ABS material, and the inner cylinder is made of PE material. The ABS material has good heat resistance, impact resistance and high hardness, and can play a role in protection, so that the ABS material is used for the outer cylinder of the aerator; the inner cylinder is made of PE material, has stronger corrosion resistance, does not react with acid and alkali, is waterproof and insulating, and has the advantages of prolonging the service life and saving maintenance and replacement cost by taking the PE material as the inner cylinder;

still include top cap 3, base 6, PE intake pipe 7, the different ball of vortex 5, spiral cutter 4 and vortex air current strip 2 extend its circumference interval on the top and the bottom section of thick bamboo wall of aeration tube and be provided with mixing nozzle mouth 1, install the vortex air current strip in mixing nozzle mouth, top cap and base install respectively in the top and the bottom nozzle mouth department of aeration tube, be equipped with the intake pipe that the level stretched into in the barrel at the barrel middle part of the aeration tube, install the different ball of vortex on the inside intake pipe of barrel, the top and the bottom of the different ball of vortex are by the body upper portion and the bottom protrusion of intake pipe, all be provided with the spiral cutter of installing in the barrel at the gas outlet department of intake pipe and each mixing nozzle mouth department.

The vortex anisotropic ball comprises a ball body 9, a mixing nozzle 10 and a vortex impeller 8, wherein the ball body is a hollow ball body, the rear end face of the ball body is provided with the mixing nozzle, the front end face, the upper end face and the lower end face of the ball body are respectively provided with the vortex impeller, and the vortex impellers of the upper end face and the lower end face are exposed in the aeration cylinder. The shape of the mixing nozzle is conical, so that the airflow velocity can be further increased.

The vortex anisotropic ball is designed into a spherical shape: the spherical shape can enable the gas in the aerator cylinder to be diffused in a large area, the service area is enlarged, the gas is more fully mixed and stirred, and the gas diffusion is more uniform. The spherical cylinder wall wraps the peripheral vortex impeller and the conical nozzle completely, and the vortex impeller and the conical nozzle are protected in all directions without the edge angle. The vortex impeller is combined with the vortex impeller, the inner cylinder is enabled to form a large-range vortex state, the spherical cylinder wall can continuously keep the large-range vortex state in the large-range state, the pressure of cutting gas is reduced for the rear spiral cutter and the vortex airflow strip, and the power efficiency is greatly enhanced.

The gas enters from the air inlet pipe, is sprayed to the inner cylinder after being acted by the mixing nozzle and the vortex impeller, and is sprayed to the outside of the aeration cylinder after being acted by the vortex airflow strips at the opening of the spiral cutter and the mixing nozzle. The gas entering the gas inlet pipe enters the conical mixing nozzle on the right side inside the vortex anisotropic ball, and after the gas is rapidly sprayed out of the conical mixing nozzle, the design of the vortex impeller on the ball body can enable the inner cylinder to be in a large-range vortex state, and meanwhile, the gas is mixed and stirred, and is conveyed to the top, the bottom and the front end of the aeration cylinder in an anisotropic manner.

The gas is conveyed to the spiral cutters at the upper side and the lower side of the gas outlet of the gas inlet pipe in an opposite direction by the vortex impeller at the front end of the vortex opposite direction ball, the gas is conveyed to the four spiral cutters at the top and the bottom of the vortex opposite direction ball in an opposite direction by the vortex impeller at the top and the bottom of the vortex opposite direction ball, the spiral cutting strips fully cut the gas for multiple times in multiple stages, spirally rise and spirally fall to form vortex tiny bubbles, the top and the bottom simultaneously suck side flow fluid and power fluid to perform strong mixing and stirring effects, simultaneously, the whole gas in the whole inner cylinder forms a vortex state, pressure energy is instantly converted into kinetic energy in the inner cylinder, the tiny bubbles with pressure form negative pressure in the combined cylinder in a vortex state, and the energy exchange is used for supplying oxygen to the gas through the vortex airflow strips in the four symmetrically distributed mixing nozzle openings, so that the vortex state in the inner cylinder is reinforced, and the strong mixing and stirring effects are performed, and then the gas is discharged in an accelerating way, so that the effect of stirring is achieved simultaneously, and the ideal effect of high efficiency and energy conservation is achieved.

The three vortex impellers in the vortex anisotropic ball can play a role of a stirrer, so that mixed liquid in the aeration tank and sewage are fully mixed and stirred, sludge is prevented from depositing at the bottom, and compared with a traditional aerator, the stirring efficiency of the traditional aerator is doubled. The three vortex impellers in the vortex anisotropic ball can strengthen the utilization rate of oxygen, so that the oxygen in the aeration tank is fully utilized, and the dissolved oxygen in the aeration tank is kept in an optimal state continuously.

The mixing nozzle in the vortex flow anisotropic ball is of a conical structure, so that the gas can be continuously and uninterruptedly sprayed out in an accelerating way, the effect is not reduced, and the oxygen supply efficiency in the aeration tank is greatly ensured.

The anisotropic double-vortex aerator can make the entering gas perform three times of oxygen supply and stirring: 1, an air inlet pipe is internally provided with a vortex anisotropic ball, and three vortex impellers are arranged in the vortex anisotropic ball, so that a large-range vortex state is formed in the inner cylinder, and the top, the bottom and the front end of the inner cylinder can achieve the effect of stirring and oxygen supply at the same time in a double-layer manner; 2, after the gas is sprayed out of the vortex flow anisotropic ball, the gas can be further supplied with oxygen and stirred under the action of spiral cutters on the upper side and the lower side of the vortex flow anisotropic ball; 3, the front end vortex impeller of the vortex anisotropic ball is conveyed onto the upper and lower spiral cutters at the air outlet of the air inlet pipe in an anisotropic way, so that the gas can achieve the effects of double-layer stirring and oxygen supply at the same time, and the top and the bottom are simultaneously supplied with oxygen and stirred.

As shown in fig. 3 and 4, the anisotropic double vortex aerator is in threaded connection with the main aeration pipeline through the air inlet pipe, namely, the main aeration pipeline is uniformly provided with internal threaded holes at intervals, and the anisotropic double vortex aerator is in threaded connection with each internal threaded hole, so that the mounting, dismounting and maintenance are convenient. The lower part of the main aeration pipeline is provided with a bracket, and the main aeration pipeline is fixed on the bracket through a U-shaped anchor ear.

When the device is used, the number and the installation interval of the different-direction double-vortex aerators on the main aeration pipeline can be adjusted according to the depth, the tank capacity, the mixed liquid in the aeration tank, the required aeration oxygenation efficiency and the like, and plugs are assembled at the positions of the internal threaded holes where the different-direction double-vortex aerators are not installed.

The embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, but it will be understood by those skilled in the art that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the embodiments and the disclosure of the drawings.

Claims

1. The utility model provides an anisotropic two vortex aerator, includes the aeration tube, its characterized in that: still include top cap, base, intake pipe, the different ball of vortex, helical cutter and vortex air current strip extend its circumference interval on the top and the bottom section of thick bamboo wall of aeration tube and be provided with the mixing nozzle mouth, install the vortex air current strip in the mixing nozzle mouth, top cap and base install respectively in the top and the bottom section of thick bamboo mouth department of aeration tube, be equipped with the intake pipe that the level stretched into in the barrel at the barrel middle part of the aeration tube, install the different ball of vortex in the inside intake pipe of barrel, all be provided with the helical cutter of installing in the barrel in the gas outlet department and each mixing nozzle mouth department of intake pipe.

2. A counter-rotating double vortex aerator as claimed in claim 1, wherein: the vortex anisotropic ball comprises a ball body, a mixing nozzle and a vortex impeller, wherein the ball body is a hollow ball body, the mixing nozzle is arranged on the rear end face of the ball body, the vortex impeller is arranged on the front end face and the upper end face and the lower end face of the ball body, and the vortex impeller on the upper end face and the lower end face is exposed in the aeration cylinder.

3. A counter-rotating double vortex aerator as claimed in claim 1, wherein: the aerator comprises an outer cylinder and an inner cylinder, wherein the inner cylinder is nested in the outer cylinder, the outer cylinder is made of ABS material, and the inner cylinder is made of PE material.

4. An aeration method based on the anisotropic double vortex aerator according to any one of claims 1 to 3, characterized in that: the method comprises the following steps: