Air floatation device

Abstract

An air flotation device comprises a box body, the outer side of the box body is fixedly communicated with one end of a dissolved air inlet pipe, the other end of the dissolved air inlet pipe is fixedly provided with a dissolved air tank, a column dividing assembly is arranged in the box body and used for dividing water flow into columns, and one end of the column dividing assembly is fixedly connected with a baffle. Two first filter screens are fixedly connected between the baffle and the inner wall of the box body, a scum scraping assembly is arranged at the top of the box body and used for scraping scum floating on the surface, an air floatation tank is fixedly connected to the side face of the box body, and a cleaning assembly is arranged in the air floatation tank and used for cleaning the inner wall of the air floatation tank. According to the utility model, the defects in the prior art are overcome, the specific gravity of the suspended matters is smaller than that of water by combining the microbubbles with the suspended matters in the sewage, the suspended matters gradually float to the water surface to form scum, and then the scum scraping component is used for cleaning the water surface, so that the scum can be scraped into the scum tank for cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an air flotation device. Background Art

[0002] Water treatment methods include physical treatment and chemical treatment. Humans have been treating water for many years. Physical methods include using filter materials with different pore sizes to remove impurities from the water by adsorption or barrier methods. The most important adsorption method is adsorption with activated carbon. The barrier method is to pass water through the filter material to prevent larger impurities from passing through, thereby obtaining cleaner water. The air flotation treatment equipment uses dissolved air water to adsorb impurities in sewage and then float them.

[0003] The existing air flotation device uses an air dissolving tank to introduce dissolved air water into the interior of the box through a dissolved air water inlet pipe, and then the air dissolved in the water is released from the water to form tiny bubbles. The microbubbles combine with suspended matter in the sewage, making the suspended matter less dense than water, and gradually float to the water surface to form scum. When scraping, the water flow will form a co-directional flow, thereby taking out the scum. However, in actual use, since the scum is cleared by the co-directional flow formed by the water flow, the water flow will also be taken out at this time, resulting in a waste of resources. At the same time, since the existing device does not perform column processing on the water flow, it is easy to cause incomplete purification, which is not conducive to actual use. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an air flotation device, which overcomes the deficiencies of the prior art. Microbubbles are combined with suspended matter in sewage to make the suspended matter have a specific gravity less than that of water, and gradually float to the water surface to form scum. Then, a scum scraping component is used to clean the water surface, so that the scum can be scraped into the air flotation tank for cleaning.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] An air flotation device comprises a box body, the outer side of the box body is fixedly connected to one end of a dissolved air water inlet pipe, the other end of the dissolved air water inlet pipe is fixedly installed with a dissolved air tank, a fence assembly is arranged inside the box body, the fence assembly is used to fence water flow, one end of the fence assembly is fixedly connected to a baffle, two first filter screens are fixedly connected between the baffle and the inner wall of the box body, a scraper assembly is arranged on the top of the box body, the scraper assembly is used to scrape off the scum floating on the surface, the side of the box body is fixedly connected to an air flotation pool, a cleaning assembly is arranged inside the air flotation pool, and the cleaning assembly is used to clean the inner wall of the air flotation pool;

[0007] A sewage inlet is fixedly connected to one side of the box body, a second water outlet is fixedly connected to the bottom of the box body, a solenoid valve is fixedly installed inside the second water outlet, a first sewage outlet is opened on one side of the box body, and the first sewage outlet extends to the inside of the flotation tank; a feed port is arranged on the top of the flotation tank, a second sewage outlet is opened at the bottom of the flotation tank, and a first water outlet is opened on one side of the flotation tank.

[0008] Preferably, the scraping assembly includes a scraper, which is fixedly connected to the top of a box body. Two transmission rollers are arranged above the box body. A transmission belt is rotatably connected between the two transmission rollers. A soft scraper is equidistantly fixedly connected to the outside of the transmission belt. The soft scraper is in contact with the scraper. A rotating motor is fixedly installed on the outside of the box body. The driving shaft of the rotating motor is transmission-connected to a transmission roller.

[0009] Preferably, the partition assembly includes three U-shaped plates, and the three U-shaped plates are all installed on the inner wall of the box body. Branch water pipes are installed at the bottom of the U-shaped plates. The lower ends of the branch water pipes are connected to the main water pipes. The ends of the main water pipes pass through the baffle and are sealed with the baffle. A second filter screen is fixedly connected to the inside of each U-shaped plate.

[0010] Preferably, the cleaning component includes a driving motor, which is fixedly installed on the top of the flotation tank, and the output end of the driving motor extends to the inside of the flotation tank and is fixedly connected to a rotating shaft, the outer side of the rotating shaft is fixedly connected to one end of two connecting rods, and the other ends of the connecting rods are fixedly connected to fixed rods, and two symmetrical through holes are provided on the surface of the fixed rod, and a sliding rod is slidably connected in the through hole, one end of the sliding rod is fixedly connected to a cleaning plate, and a spring is sleeved on the outside of the sliding rod and located between the cleaning plate and the fixed rod, and the other end of the sliding rod extends to one side of the fixed rod and is fixedly connected to a limiting block.

[0011] Preferably, the three U-shaped plates are arranged horizontally and side by side in the box.

[0012] The utility model provides an air flotation device. It has the following beneficial effects: sewage is introduced into the box through the sewage inlet, and then the dissolved air water is introduced into the box through the dissolved air inlet pipe by using the dissolved air tank, and then the air dissolved in the water is released from the water to form tiny bubbles, which are combined with the suspended matter in the sewage, so that the suspended matter has a specific gravity less than that of water, and gradually floats to the water surface to form scum, and then the scraping component is used to clean the water surface, and the scum is scraped into the air flotation tank, and cleaned by using the cleaning component inside the air flotation tank. Therefore, the purification is more thorough and more conducive to practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for describing the prior art are briefly introduced below.

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0017] Figure 4 It is a structural schematic diagram of the cleaning component in the utility model;

[0018] Description of the numbers in the figure:

[0019] 1. Dissolved air tank; 2. Dissolved air water inlet pipe; 3. Box body; 4. Sewage water inlet; 5. Scraper; 6. Drive roller; 7. Drive belt; 8. Soft scraper; 9. First sewage outlet; 10. Drive motor; 11. Feed inlet; 12. Rotating shaft; 13. First water outlet; 14. Flotation tank; 15. Connecting rod; 16. Second sewage outlet; 17. First filter screen; 18. Solenoid valve; 19. Second water outlet; 20. Baffle; 21. Second filter screen; 22. U-shaped plate; 23. Branch pipe; 24. Main water pipe; 26. Spring; 27. Sliding rod; 28. Limit block; 29. ​​Fixing rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0021] Embodiment 1, as Figures 1 to 4 As shown, an air flotation device comprises a box body 3, the outer side of the box body 3 is fixedly connected to one end of a dissolved air water inlet pipe 2, the other end of the dissolved air water inlet pipe 2 is fixedly installed with a dissolved air tank 1, a partition assembly is arranged inside the box body 3, the partition assembly is used to partition the water flow, one end of the partition assembly is fixedly connected to a baffle 20, two first filter screens 17 are fixedly connected between the baffle 20 and the inner wall of the box body 3, a scraping assembly is arranged on the top of the box body 3, the scraping assembly is used to scrape off the scum floating on the surface, the side of the box body 3 is fixedly connected to an air flotation pool 14, the inside of the air flotation pool 14 is provided with a cleaning assembly, the cleaning assembly is used to clean the inner wall of the air flotation pool 14;

[0022] A sewage inlet 4 is fixedly connected to one side of the box body 3, a second water outlet 19 is fixedly connected to the bottom of the box body 3, a solenoid valve 18 is fixedly installed inside the second water outlet 19, a first sewage outlet 9 is opened on one side of the box body 3, and the first sewage outlet 9 extends to the inside of the flotation tank 14; a feed port 11 is provided on the top of the flotation tank 14, a second sewage outlet 16 is opened at the bottom of the flotation tank 14, and a first water outlet 13 is opened on one side of the flotation tank 14.

[0023] Working principle:

[0024] When the air flotation device is in use, firstly, sewage is introduced into the box body 3 through the sewage inlet 4, and then dissolved air water is introduced into the inside of the box body 3 through the dissolved air inlet pipe 2 using the dissolved air tank 1, and then the air dissolved in the water is released from the water to form tiny bubbles, and the microbubbles combine with the suspended matter in the sewage, so that the suspended matter has a specific gravity less than that of water, and gradually floats to the water surface to form scum, and then the scraping component is used to clean the water surface, and the scum is scraped into the inside of the air flotation tank 14 through the first sewage outlet 9, and then the cleaning component inside the air flotation tank 14 is used to clean it, and the feed port 11 is set, so as to facilitate the addition of flocculant, and then the scum is precipitated again; at the same time, the water flow is divided by the dividing column component, so that it is purified more thoroughly.

[0025] Embodiment 2, as a further preferred embodiment of embodiment 1, the scraping assembly includes a scraper 5, the scraper 5 is fixedly connected to the top of the box body 3, two transmission rollers 6 are arranged above the box body 3, a transmission belt 7 is rotatably connected between the two transmission rollers 6, and soft scrapers 8 are equidistantly fixedly connected to the outer side of the transmission belt 7, and the soft scrapers 8 are in contact with the scraper 5. A rotating motor is fixedly installed on the outer side of the box body 3, and the driving shaft of the rotating motor is transmission-connected to a transmission roller 6.

[0026] Therefore, when the scraper assembly is in operation, the driving roller 6 can be driven to rotate by rotating the motor, and then the driving belt 7 can be driven to move through the transmission effect, and then the soft scraper 8 on the surface of the driving belt 7 can be driven to move, so that the scum on the water surface can be cleaned; thus, the scum on the water surface can be introduced into the flotation tank 14 through the first sewage outlet 9. At the same time, the scraper 5 is in contact with the soft scraper 8, so that the scraper 5 can scrape off the scum on the surface of the soft scraper 8.

[0027] Embodiment 3, as a further preferred solution of embodiment 1, the column assembly includes three U-shaped plates 22, which are all installed on the inner wall of the box body 3, and the bottom of the U-shaped plates 22 is installed with a branch water pipe 23, the lower end of the branch water pipe 23 is connected to the main water pipe 24, the end of the main water pipe 24 passes through the baffle 20 and is sealed with the baffle 20, and the inside of each U-shaped plate 22 is fixedly connected with a second filter screen 21. By using three U-shaped plates 22 to column the water flow, it can be purified more completely, thereby improving the purification effect.

[0028] Embodiment 4, as a further preferred embodiment of embodiment 1, the cleaning component includes a drive motor 10, the drive motor 10 is fixedly installed on the top of the flotation tank 14, the output end of the drive motor 10 extends to the inside of the flotation tank 14 and is fixedly connected to the rotating shaft 12, the outer side of the rotating shaft 12 is fixedly connected to one end of two connecting rods 15, the other ends of the connecting rods 15 are fixedly connected to the fixing rods 29, the surface of the fixing rod 29 is provided with two symmetrical through holes, the through holes are slidably connected with a sliding rod 27, one end of the sliding rod 27 is fixedly connected with a cleaning plate 30, a spring 26 is sleeved on the outside of the sliding rod 27 and located between the cleaning plate 30 and the fixing rod 29, the other end of the sliding rod 27 extends to one side of the fixing rod 29 and is fixedly connected to the limiting block 28.

[0029] When in use, the motor 10 can be driven to drive the rotating shaft 12 to rotate, and then the connecting rod 15 can be used to drive the fixing rod 29 to move, thereby driving the cleaning plate 30 to move on the inner wall of the flotation tank 14, thereby achieving the function of cleaning the inner wall of the flotation tank 14. In addition, by providing the sliding rod 27 and the spring 26, a certain elastic displacement is provided between the cleaning plate 30 and the fixing rod 29, thereby ensuring that the cleaning plate 30 can better fit the inner wall of the flotation tank 14, thereby achieving a better cleaning effect.

[0030] Embodiment 5, as a further preferred solution of embodiment 1, three U-shaped plates 22 are arranged horizontally side by side in the box body 3. The horizontal side by side arrangement can increase the effect of dividing the water flow.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air flotation device, characterized in that: The invention comprises a box body (3), the outer side of the box body (3) is fixedly connected to one end of a dissolved air water inlet pipe (2), the other end of the dissolved air water inlet pipe (2) is fixedly mounted with a dissolved air tank (1), a partition assembly is arranged inside the box body (3), the partition assembly is used to partition water flow, one end of the partition assembly is fixedly connected to a baffle (20), two first filter screens (17) are fixedly connected between the baffle (20) and the inner wall of the box body (3), a scraping assembly is arranged on the top of the box body (3), the scraping assembly is used to scrape off scum floating on the surface, a flotation pool (14) is fixedly connected to the side of the box body (3), a cleaning assembly is arranged inside the flotation pool (14), the cleaning assembly is used to clean the inner wall of the flotation pool (14); A sewage inlet (4) is fixedly connected to one side of the box body (3), a second water outlet (19) is fixedly connected to the bottom of the box body (3), a solenoid valve (18) is fixedly installed inside the second water outlet (19), a first sewage outlet (9) is opened on one side of the box body (3), and the first sewage outlet (9) extends to the inside of the flotation tank (14); a feed inlet (11) is arranged on the top of the flotation tank (14), a second sewage outlet (16) is opened on the bottom of the flotation tank (14), and a first water outlet (13) is opened on one side of the flotation tank (14).

2. An air flotation device according to claim 1, characterized in that: The scraping assembly comprises a scraper (5), wherein the scraper (5) is fixedly connected to the top of a box body (3), two transmission rollers (6) are arranged above the box body (3), a transmission belt (7) is rotatably connected between the two transmission rollers (6), a soft scraper (8) is equidistantly fixedly connected to the outside of the transmission belt (7), the soft scraper (8) is in contact with the scraper (5), and a rotating motor is fixedly installed on the outside of the box body (3), and the driving shaft of the rotating motor is transmission-connected to a transmission roller (6).

3. An air flotation device according to claim 1, characterized in that: The partition assembly comprises three U-shaped plates (22), the three U-shaped plates (22) being mounted on the inner wall of the box body (3), a branch water pipe (23) being mounted at the bottom of each U-shaped plate (22), the lower end of each branch water pipe (23) being connected to a main water pipe (24), the end of each main water pipe (24) passing through a baffle plate (20) and being sealed to the baffle plate (20), and a second filter screen (21) being fixedly connected to the interior of each U-shaped plate (22).

4. An air flotation device according to claim 1, characterized in that: The cleaning assembly comprises a drive motor (10), the drive motor (10) being fixedly mounted on the top of the flotation tank (14), the output end of the drive motor (10) extending into the interior of the flotation tank (14) and being fixedly connected to a rotating shaft (12), the outer side of the rotating shaft (12) being fixedly connected to one end of two connecting rods (15), the other ends of the connecting rods (15) being fixedly connected to a fixing rod (29), the surface of the fixing rod (29) being provided with two symmetrical through holes, the through holes being slidably connected to a sliding rod (27), one end of the sliding rod (27) being fixedly connected to a cleaning plate (30), the outer side of the sliding rod (27) being provided with a spring (26) between the cleaning plate (30) and the fixing rod (29), the other end of the sliding rod (27) extending to one side of the fixing rod (29) and being fixedly connected to a limiting block (28).

5. An air flotation device according to claim 3, characterized in that: The three U-shaped plates (22) are arranged horizontally side by side in the box body (3).

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