Nanometer air floating buffer tube

Abstract

The utility model discloses a kind of nanometer air floatation buffer tubes, including the inner tube and outer tube of each other nesting, inner tube one end is closed, outer tube two ends are coaxially connected with sealing support ring, outer tube is fixedly sleeved on inner tube by the sealing support ring of two ends, and there is spacing between outer tube inner side wall and inner tube outer side wall;Several outer aeration holes are opened through on outer tube side wall, several inner aeration holes are opened through on the side wall surrounded by outer tube, and outer aeration hole and inner aeration hole stagger without overlapping each other.Outer aeration hole inner side wall is curved.The utility model in, outer aeration hole and inner aeration hole staggered each other can avoid gas directly by inner cavity of inner tube directly into water body, gas pressure in inner cavity of inner tube will be buffered part between inner tube and outer tube spacing;In addition, gas pressure will be further absorbed by the inner side wall of curved outer aeration hole, the above two structures greatly reduce the pressure in gas release process, increase sewage treatment efficiency, shorten sewage treatment time.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, specifically a nano-air flotation buffer tube. Background Technology

[0002] In the field of wastewater treatment, dissolved air flotation (DAF) is widely used for treating oily wastewater and suspended solids wastewater due to its highly efficient solid-liquid separation characteristics. Its core principle is that microbubbles adhere to pollutant particles, forming a gas-solid complex, which then floats to the water surface using buoyancy to complete separation. However, in actual operation, traditional DAF equipment often uses direct gas output from the aeration devices. This means the gas enters the water body directly from the internal cavity of the device under high pressure through the aeration holes. This results in the generated bubbles rising too quickly and possessing strong momentum. The excessive kinetic energy leads to insufficient contact time between the bubbles and pollutant particles, preventing proper adhesion. Furthermore, some hydrophobic particles that are initially attached may be dislodged by the water flow due to the rapid rise of the bubbles. These issues often lead to long wastewater treatment times and low treatment efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a nano-air-floating buffer tube to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A nano-air-floating buffer tube includes an inner tube and an outer tube nested within each other. One end of the inner tube is closed, and both ends of the outer tube are coaxially connected with sealing support rings. The outer tube is sealed and fixedly fitted onto the inner tube by the sealing support rings at both ends. There is a gap between the inner sidewall of the outer tube and the outer sidewall of the inner tube. A plurality of external aeration holes are formed through the sidewall of the outer tube, and a plurality of internal aeration holes are formed through the sidewall of the inner tube surrounded by the outer tube. The external aeration holes and the internal aeration holes are staggered and do not overlap.

[0006] In a further embodiment, the inner wall of the external aeration hole is curved.

[0007] In a further embodiment, the number of external aeration holes is greater than the number of internal aeration holes.

[0008] Preferably, the inner wall of the external aeration hole has at least two bends.

[0009] Preferably, the ratio of the number of external aeration holes to the number of internal aeration holes is not less than 3.

[0010] Preferably, the distance between the inner wall of the outer tube and the outer wall of the inner tube is 8-12 mm.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, nested inner and outer tubes are used, with staggered external and internal aeration holes on both tubes. This prevents gas from directly entering the water body from the inner tube cavity, and the gas pressure in the inner tube cavity is partially buffered by the gap between the inner and outer tubes. In addition, the inner wall of the external aeration hole is curved, preventing gas from directly entering the water body from the external aeration hole. The gas pressure is further absorbed by the curved inner wall of the external aeration hole. These two structures greatly reduce the pressure during the gas release process, reduce the rising speed and impact force of the generated bubbles, and enable them to fully contact the fine waste residue in the sewage and stably bring it to the water surface, thereby increasing sewage treatment efficiency and shortening sewage treatment time. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0015] In the diagram: 1. Inner tube; 2. Outer tube; 3. Sealing support ring; 4. External aeration hole; 5. Internal aeration hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Implementation, for example Figure 1-2 As shown, this embodiment provides a nano-air flotation buffer tube, including an inner tube 1 and an outer tube 2 nested together. One end of the inner tube 1 is closed, and both ends of the outer tube 2 are coaxially connected to sealing support rings 3. The outer tube 2 is sealed and fixedly fitted onto the inner tube 1 by the sealing support rings 3 at both ends. The distance between the inner sidewall of the outer tube 2 and the outer sidewall of the inner tube 1 is 8-12 mm. Several external aeration holes 4 are opened through the sidewall of the outer tube 2, and several internal aeration holes 5 are opened through the sidewall of the inner tube 1 surrounded by the outer tube 2. The external aeration holes 4 and the internal aeration holes 5 are staggered and do not overlap. The number of external aeration holes 4 is greater than the number of internal aeration holes 5, and the ratio of the number of external aeration holes 4 to the number of internal aeration holes 5 is not less than 3. In this embodiment, the use of nested inner and outer tubes, with staggered external and internal aeration holes on both tubes, prevents gas from directly entering the water body from the inner cavity of the inner tube. The gas pressure in the inner cavity of the inner tube is partially buffered by the gap between the inner and outer tubes.

[0018] In this embodiment, the inner wall of the external aeration hole 4 is curved, and there are at least two bending points on the inner wall of the external aeration hole 4. The curved inner wall of the external aeration hole prevents gas from directly entering the water body through the external aeration hole, and the gas pressure is further absorbed by the curved inner wall of the external aeration hole.

[0019] In operation, the inner tube 1 is connected to the air pump. Gas is released from the inner aeration hole 5 into the gap between the inner tube 1 and the outer tube 2, absorbing a certain amount of pressure before being further released into the water through the curved outer aeration hole 4. The curved sidewall inside the outer aeration hole 4 can also absorb some of the gas pressure. These two structures greatly reduce the pressure during the gas release process, reduce the rising speed and impact force of the generated bubbles, allowing them to fully contact and stably bring fine waste residue in the sewage to the water surface, increasing sewage treatment efficiency and shortening sewage treatment time.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nano-air-floating buffer tube, characterized in that: It includes an inner tube (1) and an outer tube (2) nested together. One end of the inner tube (1) is closed, and the two ends of the outer tube (2) are coaxially connected with sealing support rings (3). The outer tube (2) is sealed and fixed on the inner tube (1) by the sealing support rings (3) at both ends. There is a gap between the inner wall of the outer tube (2) and the outer wall of the inner tube (1). The outer tube (2) has several external aeration holes (4) through its side wall, and the inner tube (1) has several internal aeration holes (5) through its side wall surrounded by the outer tube (2). The external aeration holes (4) and the internal aeration holes (5) are staggered and do not overlap.

2. The nano-air-floating buffer tube according to claim 1, characterized in that: The inner wall of the external aeration hole (4) is curved.

3. The nano-air-floating buffer tube according to claim 2, characterized in that: The inner wall of the external aeration hole (4) has no fewer than two bends.

4. The nano-air-floating buffer tube according to claim 1, characterized in that: The number of external aeration holes (4) is greater than the number of internal aeration holes (5).

5. The nano-air-floating buffer tube according to claim 4, characterized in that: The ratio of the number of external aeration holes (4) to the number of internal aeration holes (5) is not less than 3.

6. The nano-air-floating buffer tube according to claim 1, characterized in that: The distance between the inner wall of the outer tube (2) and the outer wall of the inner tube (1) is 8-12 mm.

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