Vertical dissolved air apparatus

Abstract

The utility model relates to a vertical dissolved air unit relates to the field of dissolved air unit. The technical scheme of the utility model is combined with the gravity to guide the water flow to go down in the pipe body of vertical arrangement, and the combination setting of inlet pipe and built-in sleeve pipe realizes the pre-mixing of gas and water, and the efficient primary dissolved air is completed; the wall-bonding bending and r angle design of water inlet spout make the water flow form high-speed spiral motion, prolong the residence time and strengthen the disturbance, guide the water flow to intersect with the bubbles spouted by the air distribution membrane plate component, the air distribution membrane plate component produces the small dispersed bubbles through the steady voltage, refinement and uniform distribution, greatly increases the gas-water contact area, realizes the depth secondary dissolved air, and the built-in exhaust pipe at the top timely discharges the free gas, avoids the pressure imbalance, realizes the double promotion of the dissolved air efficiency and stability under the condition.

Description

Technical Field

[0001] This utility model relates to the field of dissolved gas device technology, and in particular to a vertical dissolved gas device. Background Technology

[0002] Dissolved gas (DG) systems, as equipment in the field of gas-liquid mixing, are widely used in industries such as wastewater treatment, drinking water purification, and food processing. Their function is to efficiently integrate gas into water to form dissolved air water, achieving process objectives such as pollutant adsorption and impurity flotation through the microbubbles in the dissolved air water. With increasingly stringent environmental requirements and growing demands for industrial production efficiency, the market has set higher standards for the dissolved air efficiency, operational stability, and spatial adaptability of DG systems.

[0003] Existing vertical dissolved air devices have the following shortcomings: On the one hand, most devices rely on a single gas-water mixing process, with the gas existing in the form of large bubbles and a limited gas-liquid contact area, resulting in low dissolved air saturation; on the other hand, some devices have unreasonable gas distribution structure designs, which can easily lead to problems such as uneven bubble distribution and insufficient water flow disturbance. Summary of the Invention

[0004] The purpose of this invention is to provide a vertical dissolved gas device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A vertical dissolved air device includes a tube arranged in a vertical direction, and the vertical dissolved air device further includes: The inlet pipe is radially disposed on the upper part of the side wall of the pipe body, and has an inner sleeve disposed on its inner side. Its inlet end is located on the outer side of the pipe body, and its outlet end extends to the inner side of the pipe body. The first air inlet pipe is disposed on the outer wall of the water inlet pipe, and there is a cavity between the outer wall of the inner sleeve and the inner wall of the water inlet pipe, and the cavity is connected to the first air inlet pipe. A dissolved air water outlet pipe is radially disposed on the lower part of the side wall of the pipe body; An air-distributing membrane assembly is disposed in the middle of the pipe body and between the water inlet pipe and the dissolved air water outlet pipe, with its air inlet located on the outside of the pipe body and its air outlet located on the inside of the pipe body; and An internal exhaust pipe is provided on the upper part of the side wall of the pipe body, with its first end located near the top of the pipe body and its second end located on the outside of the pipe body; The water inlet pipe is provided with a water inlet nozzle at its outlet end. The spray end of the water inlet nozzle is bent toward the inner wall of the pipe body, so that the spray end of the water inlet nozzle is located close to the inner wall of the pipe body.

[0006] In some embodiments, the spray end of the water inlet nozzle forms an angle r with the axial direction of the water inlet pipe, so that the spray end of the water inlet nozzle is biased toward the direction of the dissolved air water outlet pipe.

[0007] In some implementations, the r-angle ranges from 5 to 45 degrees.

[0008] In some embodiments, the air-distribution membrane panel assembly includes: The second air inlet pipe has its air inlet end located on the outside of the pipe body and its air outlet end located on the inside of the pipe body; The air chamber seat has its air inlet end connected to the air outlet end of the second air inlet pipe; A diaphragm plate, the air inlet of which is connected to the air outlet of the air chamber seat; and A perforated plate, the air inlet end of which is connected to the air outlet end of the membrane plate; The porous plate has several evenly spaced air outlets, and the air outlet end of the porous plate faces the axis of the tube.

[0009] In some embodiments, a bottom sealing plate is provided at the bottom of the tube.

[0010] In some embodiments, a bottom drain pipe is provided on the bottom sealing plate.

[0011] In some embodiments, the top of the pipe body is provided with a built-in flange.

[0012] In some embodiments, a flange cover is provided on the outside of the built-in flange.

[0013] The beneficial effects of the technical solution provided by this utility model include at least the following: This technical solution features a vertically oriented pipe that guides water flow downwards using gravity. The combination of the inlet pipe and the built-in sleeve, along with the first air inlet pipe, enables pre-mixing of air and water, achieving efficient primary air dissolution. The inlet nozzle's wall-mounted bend and r-angle design creates a high-speed spiral motion in the water flow, extending the residence time and enhancing turbulence. Simultaneously, it guides the water flow to converge with the bubbles ejected from the air distribution membrane assembly. The air distribution membrane assembly, through pressure stabilization, refinement, and uniform distribution, produces tiny, dispersed bubbles, significantly increasing the air-water contact area and achieving deep secondary air dissolution. The top-mounted built-in exhaust pipe promptly discharges free gas, preventing pressure imbalance. Under these conditions, both air dissolution efficiency and stability are improved. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] Figure 1This is a front view schematic diagram of a vertical dissolved air device provided in an exemplary embodiment of the present invention.

[0016] Figure 2 A top view schematic diagram of a vertical dissolved air device provided in an exemplary embodiment of the present invention is shown.

[0017] In the picture: 1. Flange end cap; 2. Built-in flange; 3. Pipe body; 4. Built-in exhaust pipe; 5. Air-supported membrane panel assembly; 6. Bottom sealing plate; 7. Water inlet pipe; 8. Internal sleeve; 9. Water inlet nozzle; 10. First air intake pipe; 11. Second air intake pipe; 12. Air chamber seat; 13. Membrane sheet; 14. Perforated plate; 15. Dissolved air water outlet pipe; 16. Bottom drain pipe. Detailed Implementation

[0018] 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.

[0019] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1This diagram shows a front view of a vertical dissolved air apparatus provided in an exemplary embodiment of the present invention. Figure 2 This diagram shows a top view of a vertical dissolved air device provided in an exemplary embodiment of the present invention. The vertical dissolved air device includes a pipe 3 arranged vertically; a water inlet pipe 7, which is radially disposed on the upper side wall of the pipe 3, with an inner sleeve 8 disposed inside, its inlet end located outside the pipe 3, and its outlet end extending to the inner side of the pipe 3; a first air inlet pipe 10, disposed on the outer wall of the water inlet pipe 7, with a cavity between the outer wall of the inner sleeve 8 and the inner wall of the water inlet pipe 7, the cavity communicating with the first air inlet pipe 10; and a dissolved air water outlet pipe 15, which is radially disposed on the pipe 3. The lower part of the side wall of the body 3; the air distribution film plate assembly 5, which is located in the middle of the body 3 and between the water inlet pipe 7 and the dissolved air water outlet pipe 15, with its air inlet end located on the outside of the body 3 and its air outlet end located on the inside of the body 3; and the built-in exhaust pipe 4, which is located on the upper part of the side wall of the body 3, with its first end located near the top of the inside of the body 3 and its second end located on the outside of the body 3; wherein, the water outlet end of the water inlet pipe 7 is provided with a water inlet nozzle 9, and the spray end of the water inlet nozzle 9 is bent toward the inner wall of the body 3, so that the spray end of the water inlet nozzle 9 is located near the inner wall of the body 3.

[0022] In one example, the built-in exhaust pipe 4 is L-shaped, with the first end located near the top of the pipe body 3 (corresponding to the vertical direction of the L-shape), and the second end located on the outside of the pipe body 3 (corresponding to the horizontal direction of the L-shape).

[0023] In this embodiment, the vertical pipe 3 provides a stable vertical reaction space for the dissolved air process, guiding the water body downwards naturally using gravity, creating conditions for sufficient contact between gas and water. The combination of the water inlet pipe 7 and the built-in sleeve 8, through the cavity between them and the first air inlet pipe 10, allows air to be pre-integrated into the high-pressure water flow, achieving initial gas-water mixing. The layout of the water inlet nozzle 9 bending towards the inner wall of the pipe 3 allows the water flow to form a high-speed spiral motion against the wall, which not only prolongs the residence time of the water body in the device, but also enhances the gas-water mixing effect through centrifugal force. The gas distribution film plate assembly 5 in the middle connects the water inlet and outlet areas, which can replenish and refine the bubbles, greatly improving the gas solubility. The built-in exhaust pipe 4 at the top can promptly discharge unmixed gas in the water body, avoiding gas accumulation that affects the dissolved air efficiency; the dissolved air water outlet pipe 15 at the bottom follows the water flow direction, ensuring the smooth discharge of saturated dissolved air water. The overall structure, through functional zoning and process optimization, achieves a dual improvement in dissolved air efficiency and stability.

[0024] In some embodiments, see Figure 1 and Figure 2 The spray end of the water inlet nozzle 9 forms an angle r with the axis of the water inlet pipe 7, causing the spray end of the water inlet nozzle 9 to be biased toward the direction of the dissolved air water outlet pipe 15. Optionally, the range of the angle r is 5-45 degrees.

[0025] In this embodiment, the r-angle formed axially by the water inlet nozzle 9 and the water inlet pipe 7 guides the water flow direction, deflecting the spray end towards the dissolved air water outlet pipe 15. This allows the water flow to better match the flow field path within the device as it spirals downwards along the wall, reducing ineffective backflow and improving water delivery efficiency. Furthermore, this allows the water flow to more efficiently converge with the bubbles ejected from the air distribution film plate assembly 5, extending the air-water contact path and further improving the bubble dissolution rate.

[0026] In some embodiments, see Figure 1 and Figure 2 The air distribution membrane plate assembly 5 includes: a second air inlet pipe 11, the air inlet end of which is located on the outside of the pipe body 3 and the air outlet end of which is located on the inside of the pipe body 3; an air chamber seat 12, the air inlet end of which is connected to the air outlet end of the second air inlet pipe 11; a membrane plate 13, the air inlet end of which is connected to the air outlet end of the air chamber seat 12; and a perforated plate 14, the air inlet end of which is connected to the air outlet end of the membrane plate 13; wherein, the perforated plate 14 has a plurality of evenly spaced air outlet holes, and the air outlet end of the perforated plate 14 faces the axis of the pipe body 3.

[0027] In this embodiment, the second air inlet pipe 11 serves as a gas delivery channel, introducing external gas into the tube body 3. The gas chamber seat 12 receives the gas and forms a pressure-stabilizing space, preventing uneven gas distribution caused by air inlet fluctuations. The microporous structure of the membrane plate 13 can cut the gas into tiny bubbles, significantly increasing the gas-water contact area. The uniformly arranged air outlet holes of the porous plate 14 ensure that the refined bubbles are evenly distributed in a diffuse manner, and its orientation towards the axis of the tube body 3 allows the bubbles to mix with the spiraling water flow inside the tube body 3, enhancing the contact effect.

[0028] In some embodiments, see Figure 1 The bottom of the pipe body 3 is provided with a bottom sealing plate 6, and a bottom drain pipe 16 is provided on the bottom sealing plate 6. The top of the pipe body 3 is provided with an internal flange 2, and a flange cap 1 is provided on the outside of the internal flange 2.

[0029] In this embodiment, the bottom sealing plate 6 at the bottom of the pipe body 3 is used to seal the bottom end of the pipe body 3 to prevent water and gas from leaking from the bottom. The bottom drain pipe 16 on the bottom sealing plate 6 is used to drain residual water in the pipe when the machine is stopped, and can also be quickly emptied during maintenance to facilitate internal cleaning and component maintenance. The built-in flange 2 at the top of the pipe body 3, together with the outer flange cap 1, can achieve a top seal, and together with the bottom sealing plate 6, form a completely closed chamber.

[0030] Next, the working principle of a vertical dissolved gas device involved in the embodiments of this utility model will be explained.

[0031] First, high-pressure water is injected into the device through the built-in sleeve 8, while air is continuously filled into the annular cavity between the built-in sleeve 8 and the water inlet pipe 7 through the first air inlet pipe 10. Using the ejection effect of the high-pressure water flow, the air and water are initially mixed in the cavity to form a gas-water mixture. This mixture is then ejected at high speed through the water inlet nozzle 9 to complete the first gas dissolution. Secondly, because the water inlet nozzle 9 is designed with a wall-hugging bend, the sprayed air-water mixture will form a high-speed spiral motion along the inner wall of the pipe body 3. This motion mode not only prolongs the residence time of the water in the device, but also enhances the gas-liquid disturbance through centrifugal force. When the water flows down to the middle of the pipe body, it fully collides and cuts with the bubbles sprayed from the air distribution film plate assembly 5. The tiny bubbles output by the air distribution film plate assembly 5 greatly increase the air-water contact area, allowing the gas to quickly integrate into the water, achieving a second deep gas dissolution, and finally forming saturated dissolved air water. Subsequently, the dissolved air water that has reached saturation is stably discharged from the dissolved air water outlet pipe 15 at the bottom along the water flow direction to meet the needs of subsequent use; while the free gas that is not completely dissolved in the water naturally floats to the top of the pipe 3 due to the density difference, and is finally discharged in time through the built-in exhaust pipe 4 to avoid the accumulation of gas and the disruption of the pressure balance inside the pipe.

[0032] In summary, this technical solution utilizes a vertically oriented pipe structure that guides water flow downwards under gravity. The combination of the inlet pipe and the built-in sleeve, along with the first air inlet pipe, enables pre-mixing of air and water, achieving efficient primary air dissolution. The wall-mounted bend and r-angle design of the inlet nozzle creates a high-speed spiral motion in the water flow, extending the residence time and enhancing turbulence. Simultaneously, it guides the water flow to converge with the bubbles ejected from the air distribution film assembly. The air distribution film assembly, through pressure stabilization, refinement, and uniform distribution, produces tiny, dispersed bubbles, significantly increasing the air-water contact area and achieving deep secondary air dissolution. The built-in exhaust pipe at the top promptly discharges free gas, preventing pressure imbalance. Under these conditions, both air dissolution efficiency and stability are improved.

[0033] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A vertical dissolved gas device, comprising a tube (3) arranged in a vertical direction, characterized in that, The vertical dissolved air device also includes: The inlet pipe (7) is radially disposed on the upper side wall of the pipe body (3), and an inner sleeve (8) is provided on its inner side. Its inlet end is located on the outer side of the pipe body (3), and its outlet end extends to the inner side of the pipe body (3). The first air inlet pipe (10) is disposed on the outer wall of the water inlet pipe (7). There is a cavity between the outer wall of the inner sleeve (8) and the inner wall of the water inlet pipe (7). The cavity is connected to the first air inlet pipe (10). Dissolved air water outlet pipe (15) is radially disposed on the lower part of the side wall of the pipe body (3); An air-distributing membrane assembly (5) is disposed in the middle of the pipe body (3) and between the water inlet pipe (7) and the dissolved air water outlet pipe (15). Its air inlet is located on the outside of the pipe body (3), and its air outlet is located on the inside of the pipe body (3). An internal exhaust pipe (4) is provided on the upper side wall of the pipe body (3), with its first end located near the top of the inner part of the pipe body (3) and its second end located on the outer side of the pipe body (3). The water inlet pipe (7) is provided with a water inlet nozzle (9) at its outlet end. The spray end of the water inlet nozzle (9) is bent toward the inner wall of the pipe body (3), so that the spray end of the water inlet nozzle (9) is located close to the inner wall of the pipe body (3).

2. The vertical dissolved gas apparatus according to claim 1, characterized in that, The spray end of the water inlet nozzle (9) forms an angle r with the axial direction of the water inlet pipe (7), so that the spray end of the water inlet nozzle (9) is biased toward the direction of the dissolved air water outlet pipe (15).

3. The vertical dissolved gas device according to claim 2, characterized in that, The range of the r-angle is 5-45 degrees.

4. The vertical dissolved gas apparatus according to claim 1, characterized in that, The air-supported membrane panel assembly (5) includes: The second air inlet pipe (11) has its air inlet end located on the outside of the pipe body (3) and its air outlet end located on the inside of the pipe body (3). The air chamber seat (12) has its air inlet end connected to the air outlet end of the second air inlet pipe (11); The diaphragm plate (13), whose air inlet end is connected to the air outlet end of the air chamber seat (12); and The perforated plate (14) has its air inlet end connected to the air outlet end of the membrane plate (13); The porous plate (14) has several evenly spaced air outlets, and the air outlet end of the porous plate (14) faces the axis of the tube body (3).

5. The vertical dissolved gas apparatus according to claim 1, characterized in that, The bottom of the tube (3) is provided with a bottom sealing plate (6).

6. The vertical dissolved gas apparatus according to claim 5, characterized in that, The bottom sealing plate (6) is provided with a bottom drain pipe (16).

7. The vertical dissolved gas apparatus according to claim 1, characterized in that, The top of the pipe body (3) is provided with an internal flange (2).

8. The vertical dissolved gas apparatus according to claim 7, characterized in that, The outer side of the built-in flange (2) is provided with a flange cover (1).

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