Aerator and aeration method

Abstract

The present invention discloses an aerator and an aeration method, belonging to the technical field of aeration equipment. It comprises: a plurality of aeration components and an aeration tube; the plurality of aeration components are all truncated cone-shaped and are connected in sequence, the small end of the first aeration component is connected to the large end of the second aeration component from bottom to top, and the lengths are equal, the small end of the second aeration component is connected to the large end of the third aeration component, and the lengths are equal, and so on, the small end of the top aeration component is connected to an aeration cap, the bottom of the bottom aeration component is closed, and the plurality of aeration components and the aeration cap together form a conical aerator body. In the process of gas entering the lower aeration component from the top aeration component, gas and water form bubbles, and the bubbles are cut by the cutting column. The use of multiple air cushion layers and cutting bubbles can form both uniform gas distribution and fine micro-nano bubbles, greatly increasing the dissolved oxygen efficiency, reducing the air intake, and achieving energy-saving effects.

Description

Technical Field

[0001] The invention relates to the technical field of aeration equipment, and in particular to an aerator and an aeration method. Background Art

[0002] Aeration is the process of forcibly dispersing gas into liquid in order to obtain sufficient dissolved gas. For example, increasing the contact area between water and air by aerating or mechanically stirring water is an intermediate process in aerobic biological treatment of wastewater, and its purpose is to obtain sufficient dissolved oxygen.

[0003] Aerators are essential equipment for aeration. There are many aerators at present, but most of them produce bubbles larger than 50 microns. The larger the bubbles, the smaller the specific surface area, the lower the gas utilization rate, and the higher the aeration cost. Summary of the invention

[0004] In order to solve the problems of the prior art, the present invention provides an aerator and an aeration method.

[0005] In one aspect, an aerator is provided, comprising: a plurality of aeration components and an aeration tube;

[0006] The plurality of aeration components are all truncated cone-shaped and are connected in sequence. From bottom to top, the small end of the first aeration component is connected to the large end of the second aeration component, and the lengths are equal. The small end of the second aeration component is connected to the large end of the third aeration component, and the lengths are equal. The small end of the top aeration component is connected to an aeration cap, and the bottom of the bottom aeration component is closed. The plurality of aeration components and the aeration cap together form a conical aerator body.

[0007] An aeration hole and a connection hole are provided on the side wall of each aeration component, and a cutting column is connected to each connection hole;

[0008] One end of the aeration pipe is connected to the fan, and the other end enters the aeration assembly at the top from the bottom of the aerator body.

[0009] Furthermore, there are multiple aeration holes, which are evenly distributed on the side wall of the aeration component.

[0010] Furthermore, there are multiple connection holes, which are evenly distributed on the side wall of the aeration component, and the cutting columns are all connected to the connection holes.

[0011] Further, the cutting column comprises: a shell and a column;

[0012] The bottom of the shell is provided with a groove, and one end of the column is connected in the groove; the shell is connected in the connecting hole, and the bottom of the shell is located on the inner side of the aeration component.

[0013] Furthermore, the column is rotatably connected to the inner side of the groove.

[0014] Furthermore, the cross section of the shell is a regular hexagon, and the diameter of the inscribed circle gradually increases from the top to the bottom of the shell.

[0015] Furthermore, each of the aeration holes is connected to an air outlet pipe, one end of the air outlet pipe located outside the aeration hole is connected to a film, and an air outlet is provided on the film;

[0016] A connecting rod is connected inside the air outlet pipe, and a spiral blade is arranged on the connecting rod.

[0017] On the other hand, an aeration method is provided, comprising: gas enters from the bottom of the aeration pipe and reaches the aeration assembly at the top;

[0018] Then, the air flows downward from the top aeration component and enters each of the aeration components below in turn, and an air cushion layer is formed in each aeration component until equilibrium is reached;

[0019] When the gas enters each of the aeration components below from the top aeration component downward in sequence, the gas and water form bubbles, and the bubbles are continuously cut by the cutting column to form tiny micro-nano bubbles.

[0020] The beneficial effects of the technical solution provided by the embodiment of the present invention are as follows: in the present invention, multiple aeration components are connected in sequence to form a conical aerator body. In the process of gas continuously entering the aeration component below from the top aeration component, gas and water form bubbles, and the bubbles are continuously cut by the cutting column. The use of multiple air cushion layers and cutting bubbles can form uniform air distribution and tiny micro-nano bubbles, greatly increasing the dissolved oxygen efficiency and reducing the air intake, thereby reducing the fan model and achieving energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a top view of an aerator provided by the present invention;

[0023] Figure 2It is a structural schematic diagram of an aerator provided by the present invention;

[0024] Figure 3 This is a schematic diagram of gas flow in an aerator provided by the present invention;

[0025] Figure 4 This is a schematic diagram of an application of an aerator provided by the present invention;

[0026] Figure 5 It is a structural schematic diagram of a cutting column provided by the present invention;

[0027] Figure 6 It is a structural schematic diagram of an air outlet pipe provided by the present invention.

[0028] Figure numerals: 1-aerator body; 2-aeration pipe; 3-aeration assembly; 4-aeration cap; 5-aeration hole; 6-cutting column; 7-shell; 8-column; 9-air outlet pipe; 10-membrane; 11-air outlet; 12-connecting rod; 13-spiral blade. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] See also Figure 1-5 An aerator comprises: a plurality of aeration components 3 and an aeration tube 2; the plurality of aeration components 3 are all truncated cone-shaped and are connected in sequence, the small end of the first aeration component 3 is connected to the large end of the second aeration component 3 from bottom to top, and the lengths are equal, the small end of the second aeration component 3 is connected to the large end of the third aeration component 3, and the lengths are equal, and so on, the small end of the top aeration component 3 is connected to an aeration cap 4, the bottom of the bottom aeration component 3 is closed, and the plurality of aeration components 3 and the aeration cap 4 together form a conical aerator body 1; a plurality of aeration holes 5 and a plurality of connection holes are evenly arranged on the side wall of each aeration component 3, and a cutting column is connected to each connection hole 6. The cutting column 6 includes: a shell 7 and a column 8. The cross-section of the shell 7 is a regular hexagon, and the diameter of the inscribed circle gradually increases from the top to the bottom of the shell 7. A groove is arranged at the bottom of the shell 7, and one end of the column 8 is rotatably connected in the groove; the shell 7 is connected in the connecting hole, and the bottom of the shell 7 is located on the inner side of the aeration component 3; the aeration holes 5 are all connected with an outlet pipe 9, and one end of the outlet pipe 9 located outside the aeration hole 5 is connected with a film 10, and an air outlet 11 is arranged on the film 10; a connecting rod 12 is connected in the outlet pipe 9, and a spiral blade 13 is arranged on the connecting rod 12; one end of the aeration pipe 2 is connected to the fan, and the other end enters the aeration component 3 at the top from the bottom of the aerator body 1.

[0031] The complete workflow of the present invention can be as follows: the gas enters from the bottom of the aeration tube 2 and reaches the top aeration component 3; then it flows downward from the top aeration component 3 and enters each aeration component 3 below in turn until it reaches balance. The interior of each aeration component 3 is an aeration area, and an air cushion is formed in each aeration component 3. Multiple aeration components 3 are connected as a whole to form an overall balance, and finally achieve a uniform air distribution effect. When the gas enters each aeration component 3 below from the top aeration component 3 downward in turn, the gas and water form bubbles, and the bubbles enter the groove at the bottom of the shell 7, flow in the groove, and push the column 8 to rotate through the bubbles. The bubbles are cut by the column 8 to form tiny micro-nano bubbles, which greatly increase the dissolved oxygen efficiency and reduce the air intake, thereby reducing the fan model and achieving energy-saving effects. The tiny micro-nano bubbles enter the air outlet pipe 9 along the spiral blades 13, and the spiral blades 13 can further cut some larger bubbles, and the tiny micro-nano bubbles generate swirls on the spiral blades 13. Under the action of the guide force and the centrifugal force, the swirls generate pressure on the film 10, and the film 10 expands outward. The air outlet 11 on the film 10 opens, and the tiny micro-nano bubbles flow out from the air outlet 11, thereby preventing the sewage from flowing back and causing the aeration holes to be blocked.

[0032] After being cut into micro-nano bubbles, the rising speed of the bubbles drops sharply and the dissolved oxygen efficiency increases sharply. According to Stokes' law, the rising speed of bubbles in water is proportional to the square of the bubble diameter. The smaller the bubble diameter, the slower the rising speed of the bubble. The rising speed of a bubble with a diameter of 1mm in water is 6m / min, while the rising speed of a bubble with a diameter of 10μm in water is 3mm / min, which is 1 / 2000 of the former. If the increase in specific surface area is taken into account, the dissolving capacity of micro-nano bubbles is 200,000 times that of ordinary air.

[0033] It should also be noted that a through hole may be provided at the connection of two connected aeration components 3 so that the connected aeration components 3 are connected. In addition, the two connected aeration components 3 may be connected by bonding, screws, etc.

[0034] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An aerator, characterized in that: include: A plurality of aeration components (3) and aeration tubes (2); The plurality of aeration components (3) are all truncated cone-shaped and are connected in sequence. From bottom to top, the small end of the first aeration component (3) is connected to the large end of the second aeration component (3) and the lengths are equal. The small end of the second aeration component (3) is connected to the large end of the third aeration component (3) and the lengths are equal. The same is true for the same reason. The small end of the top aeration component (3) is connected to an aeration cap (4). The bottom of the bottom aeration component (3) is closed. The plurality of aeration components (3) and the aeration cap (4) together form a conical aerator body (1). An aeration hole (5) and a connection hole are provided on the side wall of each aeration component (3), and a cutting column (6) is connected to each of the connection holes; One end of the aeration pipe (2) is connected to the fan, and the other end enters the aeration assembly (3) at the top from the bottom of the aerator body (1); The number of the aeration holes (5) is multiple and they are evenly distributed on the side wall of the aeration component (3); The aeration holes (5) are all connected to an air outlet pipe (9), one end of the air outlet pipe (9) located outside the aeration hole (5) is connected to a film (10), and the film (10) is provided with an air outlet (11); A connecting rod (12) is connected to the air outlet pipe (9), and a spiral blade (13) is provided on the connecting rod (12); The number of the connection holes is multiple and evenly distributed on the side wall of the aeration component (3); the cutting columns (6) are all connected to the connection holes; The cutting column (6) comprises: a shell (7) and a column (8); The bottom of the shell (7) is provided with a groove, and one end of the column (8) is connected to the groove; the shell (7) is connected to the connecting hole, and the bottom of the shell (7) is located on the inner side of the aeration component (3); The column (8) is rotatably connected to the inner side of the groove; The cross section of the shell (7) is a regular hexagon, and the diameter of the inscribed circle gradually increases from the top to the bottom of the shell (7); The gas enters from the bottom of the aeration pipe (2) and reaches the top aeration component (3); then it flows downward from the top aeration component (3) and enters each aeration component (3) below in turn until balance is reached. The interior of each aeration component (3) is an aeration area. An air cushion layer is formed in each aeration component (3). The multiple aeration components (3) are connected as a whole to form an overall balance, thereby achieving the purpose of uniform air distribution. When the gas flows downward from the top aeration component (3) and enters each aeration component (3) below in turn, the gas and water form bubbles, and the bubbles enter the groove at the bottom of the shell (7). , flows in the groove, and the cylinder (8) is driven to rotate by the bubbles. The bubbles are cut by the cylinder (8) to form fine micro-nano bubbles. The fine micro-nano bubbles enter the air outlet pipe (9) along the spiral blades (13). The spiral blades (13) can further cut some larger bubbles, and the fine micro-nano bubbles generate swirls on the spiral blades (13). The swirls generate pressure on the film (10) under the action of the guide force and the centrifugal force. The film (10) expands outward, the air outlet (11) on the film (10) opens, and the fine micro-nano bubbles flow out from the air outlet (11).

2. An aeration method according to claim 1, characterized in that: The steps include: Gas enters from the bottom of the aeration tube (2) and reaches the aeration component (3) at the top; Then, the air flows downward from the top aeration component (3) and enters each of the aeration components (3) below in turn, and an air cushion layer is formed in each of the aeration components (3) until equilibrium is reached; When the gas enters each of the aeration components (3) below from the topmost aeration component (3) downward in sequence, the gas and water form bubbles, which are continuously cut by the cutting column (6) to form tiny micro-nano bubbles.

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