Efficient circulating gas dissolving device capable of recycling air floatation tail gas

Abstract

The utility model discloses an efficient circulating gas dissolving device capable of recycling air floatation tail gas, which belongs to the technical field of sewage treatment and comprises a machine body, a reaction area, an air floatation contact area and a separation area are sequentially arranged in an inner cavity of the machine body from left to right, a transverse plate is fixedly mounted on the right side of the machine body, and a slag discharge bin is arranged at the top of the transverse plate. A water collecting tank is fixedly connected to the right side of the slag discharging bin, a rectangular plate is arranged at the bottom of the slag discharging bin, the bottom of the rectangular plate extends into the transverse plate, a limiting seat is fixedly mounted on the front side of the bottom of the transverse plate, a limiting plate is arranged in an inner cavity of the limiting seat, and an inserting rod is fixedly embedded in an inner cavity of the limiting plate; the top of the inserting rod extends into the rectangular plate, and a supporting plate is fixedly installed on the front side of the machine body. The deslagging bin and the water collecting tank can be taken down to be cleaned, the cleaning efficiency of the deslagging bin and the water collecting tank is improved, and dirt residues are avoided.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a high-efficiency circulating dissolved air device that can recover and reuse the tail gas from air flotation. Background Technology

[0002] Dissolved air flotation (DAF) refers to the process of using highly dispersed microbubbles as carriers to adhere to pollutants in wastewater, making their buoyancy greater than their weight and the resistance to buoyancy, thereby causing the pollutants to float to the surface and form foam. The foam is then scraped off from the surface by a skimmer, achieving solid-liquid or liquid-liquid separation. Dissolved air devices are required in wastewater treatment.

[0003] Patent document CN214141675U discloses a high-efficiency circulating dissolved air device for recovering and utilizing flotation tail gas, relating to the field of wastewater treatment. Specifically, it includes a sealed chamber; the sealed chamber comprises a flotation chamber and a sludge discharge chamber; a cleaning device is provided on the upper part of the flotation chamber; the cleaning device scrapes and sends floating debris above the flotation chamber into the sludge discharge chamber through the sludge discharge port; the sealed chamber is respectively equipped with an inlet pipe, a return water pipe, a dissolved air water pipe, and a return gas pipe; a dissolved air pump is provided between the return water pipe and the dissolved air water pipe; the return gas pipe and the return water pipe are connected. This utility model can fully recover and utilize the tail gas generated by flotation, avoiding the emission of harmful gases, eliminating secondary pollution, and reducing the time required for external nitrogen generators or air compressors to supply gas, thus saving energy and reducing consumption.

[0004] The device described above is not convenient for disassembling the slag discharge bin for cleaning. Because dirt adheres to the inner wall of the slag discharge bin and is difficult to clean, it will block the slag discharge bin after a long time, reducing the practicality of the device. It is also inconvenient to maintain the equipment, increasing the workload of the staff and raising labor costs. Therefore, we propose a high-efficiency circulating dissolved air device that can recover and reuse the flotation tail gas to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a highly efficient circulating dissolved gas device that can recover and reuse the tail gas from air flotation, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-efficiency circulating dissolved air device for recovering and utilizing flotation tail gas includes a body. The inner cavity of the body, from left to right, is provided with a reaction zone, a flotation contact zone, and a separation zone. A horizontal plate is fixedly installed on the right side of the body. A slag discharge bin is placed on top of the horizontal plate. A water collection tank is fixedly connected to the right side of the slag discharge bin. A rectangular plate is provided at the bottom of the slag discharge bin, with the bottom of the rectangular plate extending into the interior of the horizontal plate. A limiting seat is fixedly installed on the front side of the bottom of the horizontal plate. A limiting plate is provided in the inner cavity of the limiting seat. A rod is fixedly embedded in the inner cavity of the limiting plate, with the top of the rod extending into the interior of the rectangular plate. A support plate is fixedly installed on the front side of the body. A ladder is fixedly installed on the left side of the support plate. Handrails are fixedly installed on the front side of the top of both the support plate and the ladder.

[0008] Preferably, a spring is fixedly connected to the bottom of the limiting plate, the bottom of the spring is fixedly connected to the bottom of the inner cavity of the limiting seat, the spring is sleeved on the outside of the insertion rod, the bottom of the insertion rod passes through the limiting seat and is fixedly connected to the pad, and a rectangular groove adapted to the rectangular plate is opened on the top of the horizontal plate.

[0009] Preferably, a dissolved gas tank is fixedly installed on the top of the left side of the machine body, and a water pump is fixedly installed on the bottom of the left side of the machine body. A return pipe is fixedly connected to the front side of the water pump, and the side of the return pipe away from the water pump is rotatably connected to the bottom of the water collection tank.

[0010] Preferably, a connecting pipe is rotatably connected to the right side of the machine body, and the side of the connecting pipe away from the machine body is rotatably connected to the bottom of the water collection tank, and a drain pipe is fixedly connected to the bottom of the water collection tank.

[0011] Preferably, both the left and right sides of the rear side of the machine body are fixedly connected to a drain pipe, and a valve is fixedly installed on the top of the drain pipe.

[0012] Preferably, a slag scraping mechanism is fixedly installed on the right side of the top of the machine body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, the connecting pipe and return pipe at the bottom of the water collection tank are removed by rotating it forward. Then, the pad is pulled down, and the pad moves the insert rod downward. The insert rod moves the limiting plate downward and compresses the spring. When the top of the insert rod is away from the rectangular plate, the rectangular plate is pulled forward. The rectangular plate moves the slag discharge bin and the water collection tank forward, which allows the slag discharge bin and the water collection tank to be removed for cleaning. This improves the cleaning efficiency of the slag discharge bin and the water collection tank and avoids dirt residue. Attached Figure Description

[0015] Figure 1This is a three-dimensional structural diagram of a high-efficiency circulating dissolved gas device that can recover and utilize the tail gas of air flotation proposed in this utility model.

[0016] Figure 2 This is a rear view structural diagram of a high-efficiency circulating dissolved gas device that can recover and utilize the tail gas of air flotation proposed in this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of a high-efficiency circulating dissolved gas device that can recover and utilize the tail gas of air flotation proposed in this utility model.

[0018] Figure 4 for Figure 3 A magnified view of part A in the middle.

[0019] In the diagram: 1. Body; 2. Reaction zone; 3. Air flotation contact zone; 4. Separation zone; 5. Sludge scraping mechanism; 6. Sludge discharge bin; 7. Water collection tank; 8. Horizontal plate; 9. Dissolved air tank; 10. Rectangular plate; 11. Rectangular trough; 12. Limiting seat; 13. Limiting plate; 14. Insert rod; 15. Spring; 16. Sewage pipe; 17. Valve; 18. Support plate; 19. Ladder; 20. Handrail; 21. Return pipe; 22. Connecting pipe; 23. Drainage pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A high-efficiency circulating dissolved air device for recovering and utilizing flotation tail gas includes a body 1. The inner cavity of the body 1 is provided with a reaction zone 2, a flotation contact zone 3, and a separation zone 4 from left to right. A horizontal plate 8 is fixedly installed on the right side of the body 1. A slag discharge bin 6 is placed on the top of the horizontal plate 8. A water collection tank 7 is fixedly connected to the right side of the slag discharge bin 6. A rectangular plate 10 is provided at the bottom of the slag discharge bin 6. The bottom of the rectangular plate 10 extends into the interior of the horizontal plate 8. A limiting seat 12 is fixedly installed on the front side of the bottom of the horizontal plate 8. A limiting plate 13 is provided in the inner cavity of the limiting seat 12. An insert rod 14 is fixedly embedded in the inner cavity of the limiting plate 13. The top of the insert rod 14 extends into the interior of the rectangular plate 10. A support plate 18 is fixedly installed on the front side of the body 1. A ladder 19 is fixedly installed on the left side of the support plate 18. Handrails 20 are fixedly installed on the front side of the top of both the support plate 18 and the ladder 19.

[0022] In this embodiment, a spring 15 is fixedly connected to the bottom of the limiting plate 13. The bottom of the spring 15 is fixedly connected to the bottom of the inner cavity of the limiting seat 12. The spring 15 is sleeved on the outside of the insertion rod 14. The bottom of the insertion rod 14 passes through the limiting seat 12 and is fixedly connected to the pad. A rectangular groove 11 adapted to the rectangular plate 10 is opened on the top of the horizontal plate 8. A dissolved gas tank 9 is fixedly installed on the top of the left side of the machine body 1. A water pump is fixedly installed on the bottom of the left side of the machine body 1. A return pipe 21 is fixedly connected to the front side of the water pump. The side of the return pipe 21 away from the water pump is rotatably connected to the bottom of the water collection tank 7. The insertion rod 14 can be reset by the spring 15, which improves the limiting effect of the insertion rod 14.

[0023] In this embodiment, a connecting pipe 22 is rotatably connected to the right side of the body 1. The side of the connecting pipe 22 away from the body 1 is rotatably connected to the bottom of the water collection tank 7. A drain pipe 23 is fixedly connected to the bottom of the water collection tank 7. Sewage pipes 16 are fixedly connected to both the left and right sides of the rear side of the body 1. A valve 17 is fixedly installed on the top of the sewage pipe 16. A scraper mechanism 5 is fixedly installed on the right side of the top of the body 1. The valve 17 facilitates the opening and closing of the sewage pipe 16, improving the convenience of sewage discharge.

[0024] In this embodiment, during use, wastewater is poured into reaction zone 2 via external equipment to undergo a chemical reaction. After effective reaction, it enters flotation contact zone 3. Microbubbles generated by dissolved air tank 9 adhere to the suspended solids after the reaction and enter separation zone 4 together. The suspended solids with a large number of microbubbles attached float to the liquid surface to form scum. The scum is scraped into scum discharge bin 6 by scum scraping mechanism 5. The clear water at the bottom flows into water collection tank 7 through connecting pipe 22. A portion of the clear water is returned through return pipe 21 to supply dissolved air tank 9. When cleaning is required for the slag discharge bin 6 and the water collection tank 7, the connecting pipe 22 and the return pipe 21 at the bottom of the water collection tank 7 are rotated forward to remove them. Then, the pad is pulled down, and the pad moves the insert rod 14 downward. The insert rod 14 moves the limiting plate 13 downward, while compressing the spring 15. When the top of the insert rod 14 is away from the rectangular plate 10, the rectangular plate 10 is pulled forward. The rectangular plate 10 moves the slag discharge bin 6 and the water collection tank 7 forward, allowing the slag discharge bin 6 and the water collection tank 7 to be removed for cleaning.

[0025] The above provides a detailed description of a high-efficiency circulating dissolved gas device for recovering and utilizing flotation tail gas, as provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A high-efficiency circulating dissolved gas device for recovering and utilizing flotation tail gas, comprising a body (1), characterized in that: The inner cavity of the machine body (1) is provided with a reaction zone (2), an air flotation contact zone (3), and a separation zone (4) from left to right. A horizontal plate (8) is fixedly installed on the right side of the machine body (1). A slag discharge bin (6) is placed on the top of the horizontal plate (8). A water collection tank (7) is fixedly connected to the right side of the slag discharge bin (6). A rectangular plate (10) is provided at the bottom of the slag discharge bin (6). The bottom of the rectangular plate (10) extends into the interior of the horizontal plate (8). The front side of the bottom of the horizontal plate (8) is fixedly... A limiting seat (12) is fixedly installed. A limiting plate (13) is provided in the inner cavity of the limiting seat (12). A plug rod (14) is fixedly embedded in the inner cavity of the limiting plate (13). The top of the plug rod (14) extends into the interior of the rectangular plate (10). A support plate (18) is fixedly installed on the front side of the body (1). A ladder (19) is fixedly installed on the left side of the support plate (18). Handrails (20) are fixedly installed on the front side of the top of both the support plate (18) and the ladder (19).

2. The high-efficiency circulating dissolved air device for recovering and utilizing flotation tail gas according to claim 1, characterized in that: A spring (15) is fixedly connected to the bottom of the limiting plate (13). The bottom of the spring (15) is fixedly connected to the bottom of the inner cavity of the limiting seat (12). The spring (15) is sleeved on the outside of the insert rod (14). The bottom of the insert rod (14) passes through the limiting seat (12) and is fixedly connected to the pad. The top of the horizontal plate (8) is provided with a rectangular groove (11) that matches the rectangular plate (10).

3. The high-efficiency circulating dissolved air device for recovering and utilizing flotation tail gas according to claim 1, characterized in that: A dissolved gas tank (9) is fixedly installed on the top left side of the machine body (1), and a water pump is fixedly installed on the bottom left side of the machine body (1). A return pipe (21) is fixedly connected to the front side of the water pump, and the side of the return pipe (21) away from the water pump is rotatably connected to the bottom of the water collection tank (7).

4. The high-efficiency circulating dissolved air device for recovering and utilizing flotation tail gas according to claim 1, characterized in that: The right side of the body (1) is rotatably connected to a connecting pipe (22), and the side of the connecting pipe (22) away from the body (1) is rotatably connected to the bottom of the water collection tank (7). The bottom of the water collection tank (7) is fixedly connected to a drain pipe (23).

5. A high-efficiency circulating dissolved air device for recovering and utilizing flotation tail gas according to claim 1, characterized in that: Both sides of the rear side of the machine body (1) are fixedly connected to a sewage pipe (16), and a valve (17) is fixedly installed on the top of the sewage pipe (16).

6. A high-efficiency circulating dissolved air device for recovering and utilizing flotation tail gas according to claim 1, characterized in that: A slag scraping mechanism (5) is fixedly installed on the right side of the top of the machine body (1).

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