A high efficiency gas stripping device

Abstract

The utility model relates to a kind of high-efficiency stripping devices, including coaxially arranged upper lift pipe and lower lift pipe, the upper lift pipe is through with water collecting main, the upper lift pipe and lower lift pipe are connected with compressed air chamber, the compressed air chamber is provided with microporous membrane, the microporous membrane annularly is provided, the compressed air chamber is spaced to form inner cavity and outer cavity, the inner cavity is for liquid flow, the compressed air chamber is outwardly connected with compressed air pipe, the air inlet end of the compressed air pipe is through with the outer cavity setting. The present scheme has the advantages of simple structure, high efficiency, small equipment vibration.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a high-efficiency air stripping device. Background Technology

[0002] Existing air-lift devices primarily operate on the principle of using the density difference between the liquid inside and outside the lift pipe to elevate the liquid. Compressed air enters the lift pipe from the bottom, forming bubbles. The large number of bubbles causes the density of the air-liquid mixture inside the lift pipe to be less than that of water. Under the pressure difference between the inlet and outlet caused by this density difference, the air-liquid mixture moves upwards, thereby pulling the water upwards, and finally discharging it above the liquid surface. Figure 1 As shown, it includes a riser pipe 1, the upper end of which is connected to the main water collection pipe 11, and the lower end which extends into the water. A compressed air pipe 12 is installed through the riser pipe, and compressed air is continuously injected to form bubbles, so that the density of the air-water mixture in the riser pipe is less than the density of water.

[0003] However, in actual use, the following problems exist: (1) Low efficiency: The existing air-lift device produces large bubbles, which results in low efficiency in the use of compressed air; (2) Large vibration: The existing air-lift device produces large bubbles, and the air-water ratio distribution is often severely uneven at different heights, resulting in large vibration of the existing device. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a high-efficiency airlift device with simple structure, high efficiency and low equipment vibration.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A high-efficiency air lifting device includes an upper lifting pipe and a lower lifting pipe coaxially arranged. The upper lifting pipe is connected to a water collection main pipe. A compressed air chamber is connected between the upper and lower lifting pipes. A microporous membrane is disposed in the compressed air chamber. The microporous membrane is arranged in a ring to divide the compressed air chamber into an inner cavity and an outer cavity. The inner cavity is for liquid to flow through. A compressed air pipe is connected to the compressed air chamber outward. The air inlet end of the compressed air pipe is connected to the outer cavity.

[0007] In operation, the entire device is placed in a liquid, and compressed air is introduced into the compressed air pipe. The compressed air is evenly distributed onto the surface of the microporous diaphragm in the outer cavity, ensuring uniform flow rate. After passing through the microporous diaphragm, the airflow disperses into tiny gas streams, which mix with water in the inner cavity, forming tiny bubbles. The density of the gas-water mixture is lower than that of the liquid outside the riser pipe. Under the pressure difference between the inlet and outlet caused by the density difference, the gas-liquid mixture is lifted and flows into the main water collection pipe. In this design, the use of a microporous diaphragm in the air filling section effectively reduces compressed air bubbles, thereby improving the efficiency of compressed air utilization. The compressed air bubbles are small, the air-water ratio is evenly distributed at different heights, and the small bubble volume reduces vibration during device operation.

[0008] As an optimization, the bottom of the lower lifting tube is flared, with the bottom diameter being larger than the top diameter.

[0009] In this way, the flared design can increase the inlet area of ​​the gas device, reduce the resistance encountered during inlet flow, and ensure stable operation of the lifting device.

[0010] As an optimization, both the upper and lower lifting pipes are connected to the flange of the compressed air chamber.

[0011] This ensures the airtightness of the segmented design and guarantees the stable operation of the gas device.

[0012] As an optimization, the microporous membrane is fixedly connected to the inner top surface and inner bottom surface of the compressed air chamber, respectively.

[0013] This allows the compressed air chamber to be divided while ensuring that the microporous diaphragm can distribute the flow evenly.

[0014] As an optimization, a connecting pipe is also provided between the riser pipe and the main water collection pipe.

[0015] This way, different operating conditions can be met.

[0016] In summary, this utility model has the advantages of simple structure, high efficiency, and low equipment vibration. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the existing air-lift device described in the background art.

[0018] Figure 2 This is a schematic diagram of a high-efficiency airlift device according to the present invention.

[0019] Figure 3 This is a structural schematic diagram of a high-efficiency airlift device according to the present invention. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0021] like Figure 1-3 As shown, a high-efficiency air lifting device includes an upper lifting pipe 2 and a lower lifting pipe 21 coaxially arranged. The upper lifting pipe is connected to a water collection main pipe 22. A compressed air chamber 23 is connected between the upper and lower lifting pipes. A microporous membrane 24 is disposed in the compressed air chamber. The microporous membrane is arranged in a ring to divide the compressed air chamber into an inner cavity and an outer cavity. The inner cavity is for liquid to flow through. A compressed air pipe 25 is connected to the compressed air chamber outward. The air inlet end of the compressed air pipe is connected to the outer cavity.

[0022] In operation, the entire device is placed in a liquid, and compressed air is introduced into the compressed air pipe. The compressed air is evenly distributed onto the surface of the microporous diaphragm in the outer cavity, ensuring uniform flow rate. After passing through the microporous diaphragm, the airflow disperses into tiny gas streams, which mix with water in the inner cavity, forming tiny bubbles. The density of the gas-water mixture is lower than that of the liquid outside the riser pipe. Under the pressure difference between the inlet and outlet caused by the density difference, the gas-liquid mixture is lifted and flows into the main water collection pipe. In this design, the use of a microporous diaphragm in the air filling section effectively reduces compressed air bubbles, thereby improving the efficiency of compressed air utilization. The compressed air bubbles are small, the air-water ratio is evenly distributed at different heights, and the small bubble volume reduces vibration during device operation.

[0023] In this embodiment, the bottom of the lower lift pipe is shaped like a flared opening 26, with the bottom diameter larger than the top diameter. This flared opening design increases the inlet area of ​​the gas device, reduces resistance during inlet flow, and ensures stable operation of the lift.

[0024] In this embodiment, both the upper and lower riser pipes are connected to the flange of the compressed air chamber. This ensures the airtightness of the segmented design and guarantees stable operation of the gas device.

[0025] In this embodiment, the microporous diaphragm is fixedly connected to the inner top and bottom surfaces of the compressed air chamber, respectively. This allows the compressed air chamber to be divided while ensuring that the microporous diaphragm can uniformly distribute the flow rate.

[0026] In this embodiment, a connecting pipe 27 is also provided between the riser pipe and the main water collection pipe. This allows for different operating conditions to be met.

[0027] Working principle: Compressed air is delivered to the compressed air chamber through the compressed air pipe. The compressed air achieves pressure equalization in the compressed air chamber. After pressure equalization, the compressed air forms tiny bubbles in the water through the microporous diaphragm. The density of the gas-water mixture is lower than that of the liquid outside the riser. Under the action of the pressure difference between the inlet and outlet caused by the density difference, the gas-liquid mixture in the bell mouth will enter the riser along the riser, thereby achieving the purpose of lifting the liquid.

[0028] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high-efficiency air-lift device, characterized in that, It includes an upper lift pipe and a lower lift pipe arranged coaxially. The upper lift pipe is connected to the main water collection pipe. A compressed air chamber is connected between the upper lift pipe and the lower lift pipe. A microporous membrane is arranged in the compressed air chamber. The microporous membrane is arranged in a ring to divide the compressed air chamber into an inner cavity and an outer cavity. The inner cavity is for liquid to flow through. A compressed air pipe is connected to the compressed air chamber outward. The air inlet end of the compressed air pipe is connected to the outer cavity.

2. The high-efficiency air-lift device according to claim 1, characterized in that, The bottom of the lower lifting tube is flared, with the bottom diameter being larger than the top diameter.

3. The high-efficiency air-lift device according to claim 2, characterized in that, Both the upper and lower lifting pipes are connected to the flange of the compressed air chamber.

4. The high-efficiency air-lift device according to claim 3, characterized in that, The microporous membrane is fixedly connected to the inner top surface and inner bottom surface of the compressed air chamber, respectively.

5. The high-efficiency air-lift device according to claim 3, characterized in that, A connecting pipe is also provided between the riser pipe and the main water collection pipe.

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