Vertical flow type dissolved steam flotation machine

Abstract

The utility model relates to the technical field of air flotation machines, in particular to a vertical flow type dissolved steam air flotation machine which can be used for primarily centrifugally separating sewage input into an air dissolving tank and an air dissolving tank, preventing small holes of the air dissolving tank from being blocked and improving the reliability of equipment. Comprising a gas dissolving tank and a sewage inlet pipe, the output end of the sewage inlet pipe extends into the centrifugal box, the input end of the sewage branch pipe I extends into the centrifugal box, the output end of the sewage branch pipe I extends into the upper part of the air dissolving tank, the input end of the sewage branch pipe II extends into the center of the bottom of the centrifugal box, and the output end of the air dissolving tank extends into the center of the bottom of the centrifugal box; the output end of the second sewage branch pipe extends into the air dissolving tank, the air dissolving tank is installed in the center of the bottom of the cavity of the air dissolving tank, a plurality of small holes are formed in the outer wall of the air dissolving tank, the input end of the high-pressure air pipe is connected with the air compressor, the output end of the high-pressure air pipe penetrates through the air dissolving tank and extends into the air dissolving tank, and an opening and closing structure of the small holes is arranged in the air dissolving tank.

Description

Technical Field

[0001] The utility model relates to the technical field of air flotation machines, in particular to a vertical flow dissolved steam flotation machine. Background Art

[0002] The principle of the flotation machine is to generate a large number of microbubbles in the water to form a three-phase mixture of water, air and the removed substances. Under the combined action of various forces such as interfacial tension, bubble buoyancy and hydrostatic pressure difference, the microbubbles are promoted to adhere to the oil droplets and impurities to be removed. Since the density of the adhesive body is less than that of water, they float to the water surface, thereby separating and removing the oil droplets and impurities in the water.

[0003] The Chinese utility model patent with the prior art publication number CN220432414U proposes a vertical flow air flotation machine. The air flotation machine is provided with a sewage discharge mechanism and a toggle mechanism. When in use, the second power member is started, and the second power member drives the scraper to rotate through the connecting frame to scrape the floating flocculent dirt into the dirt collecting bucket. Since the scraper scrapes the floating flocculent dirt into the dirt collecting bucket in a cyclic manner during the rotation process, the flocculent dirt will be driven into the dirt collecting bucket in a vortex shape, avoiding the collision of water waves and reverse water waves when the scraper scrapes the flocculent dirt, causing the bubbles on the flocculent dirt to collide and rupture and be re-mixed into the water, thereby improving the effect of separating the flocculent dirt in the sewage, and then improving the treatment quality of the sewage.

[0004] When the flotation machine is working, high-pressure air and water need to be input into the aerosol tank so that the high-pressure air is forced to dissolve in the water, and the saturated water is input into the aerosol tank. Due to the pressure reduction, the air in the water is precipitated to form a large number of tiny bubbles. The above-mentioned prior art directly inputs sewage into the aerosol tank, and does not disclose the structure for inputting sewage into the aerosol tank. If the sewage is directly input into the aerosol tank without treatment, it is easy to cause the air outlet of the aerosol mechanism to be blocked, resulting in poor reliability. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a vertical flow dissolved air flotation machine which can perform primary centrifugal separation of sewage input into an aerosol pool and an aerosol tank, avoid clogging of small holes in the aerosol tank, and improve the reliability of the equipment.

[0006] A vertical flow dissolved air flotation machine of the utility model includes an air dissolution tank and a sewage inlet pipe. A chamber is arranged inside the air dissolution tank. It also includes a centrifugal tank, a first sewage branch pipe, a second sewage branch pipe, an air dissolution tank, an air compressor, and a high-pressure air pipe. A separation chamber is arranged inside the centrifugal tank. The output end of the sewage inlet pipe extends into the upper part of the separation chamber of the centrifugal tank and is close to the inner wall of the centrifugal tank. The input end of the first sewage branch pipe extends into the lower part of the separation chamber of the centrifugal tank and is close to the inner wall of the centrifugal tank. The output end of the first sewage branch pipe extends into the upper part of the chamber of the air dissolution tank. The input end of the second sewage branch pipe extends into the center of the bottom of the separation chamber of the centrifugal tank. The output end of the second sewage branch pipe passes through the bottom of the air dissolution tank and extends into the interior of the air dissolution tank. The air dissolution tank is installed at the center of the bottom of the chamber of the air dissolution tank. A plurality of small holes are arranged on the outer wall of the air dissolution tank. The input end of the high-pressure air pipe is connected to the air outlet of the air compressor. The output end of the high-pressure air pipe passes through the bottom of the air dissolution tank and extends into the interior of the air dissolution tank. An opening and closing structure for the small holes is arranged inside the air dissolution tank. During operation, sewage is input into the centrifugal tank through the sewage inlet pipe. Since the output end of the sewage inlet pipe is close to the inner wall of the centrifugal tank, the sewage rotates in the separation chamber of the centrifugal tank. During the rotation and flow of the sewage, solid impurities in the sewage move towards the inner wall of the centrifugal tank and are input into the chamber of the air dissolution tank through the first sewage branch pipe along with the sewage. The sewage after separating the solid impurities is input into the interior of the air dissolution tank through the second sewage branch pipe. When the sewage in the chamber of the air dissolution tank and the interior of the air dissolution tank is filled, the air compressor starts and inputs high-pressure air into the interior of the air dissolution tank through the high-pressure air pipe, so that the air is forced to dissolve in the sewage inside the air dissolution tank to form dissolved air water. When the air dissolved in the air dissolution tank is saturated, the opening and closing structure opens a plurality of small holes of the air dissolution tank, so that the saturated dissolved air water is discharged into the chamber of the air dissolution tank through the plurality of small holes and mixed with the sewage to lose pressure and generate a large number of tiny bubbles. The tiny bubbles help the solid impurities in the sewage to be mixed and coagulated into flocculent dirt during the rising process. The flocculent dirt combines with the tiny bubbles. Due to the tiny bubbles, the density of the flocculent dirt is less than the density of water, and the flocculent dirt floats. Compared with the prior art, it can perform primary centrifugal separation treatment on the sewage input into the air dissolution tank and the air dissolution tank, avoid the sewage containing a large amount of solid impurities from entering the air dissolution tank and blocking the plurality of small holes of the air dissolution tank, and improve the reliability of the equipment.

[0007] Preferably, it further includes a partition baffle. The partition baffle is installed at the center of the bottom of the separation chamber of the centrifugal tank. The input end of the second sewage branch pipe is located inside the partition baffle. The partition baffle divides the bottom of the rotating water flow in the separation chamber of the centrifugal tank into an inner layer and an outer layer, so that the outer layer of water is discharged into the chamber of the air dissolution tank through the first sewage branch pipe, and the inner layer of water is discharged into the interior of the air dissolution tank through the second sewage branch pipe, improving the separation effect of solid impurities in the sewage.

[0008] Preferably, it further includes a chemical agent tank and a chemical agent adding pipe. The chemical agent tank is installed on the centrifugal tank. The input end of the chemical agent adding pipe is connected to the medicine outlet of the aerosolization tank, and the output end of the chemical agent adding pipe extends between the partition baffle and the inner wall of the centrifugal tank. Flocculants and the like are stored in the chemical agent tank, and the flocculants are injected through the chemical agent adding pipe between the partition baffle and the chemical agent tank, so that the flocculants and other chemical agents are in full contact with the rotating water flow between the partition baffle and the inner wall of the centrifugal tank, improving the mixing uniformity of the sewage and the flocculants.

[0009] Preferably, the opening and closing structure of the small holes includes an upper sealing ring, a lower sealing ring and an inner tank body. The upper sealing ring is annularly installed on the upper inner wall of the aerosolization tank, and the lower sealing ring is annularly installed on the lower inner wall of the aerosolization tank. The lower sealing ring is located below the multiple small holes of the aerosolization tank. A plurality of through holes are evenly arranged on the lower sealing ring. The input ports of the plurality of through holes are located in the middle of the inner wall of the lower sealing ring, and the output ports of the plurality of through holes are located at the top end of the lower sealing ring. The upper end of the inner tank body is closed, and the lower end of the inner tank body is open. The upper outer wall of the inner tank body is slidably connected to the inner wall of the upper sealing ring, and the lower outer wall of the inner tank body is slidably connected to the inner wall of the lower sealing ring. Wear-resistant sealing rings are arranged between the inner tank body and the upper sealing ring and between the inner tank body and the lower sealing ring. When sewage and high-pressure air are conveyed into the interior of the aerosolization tank, the inner tank body is in a low position, so that the lower port of the inner tank body is located below the input ports of the plurality of through holes of the lower sealing ring, forming a closed space inside the inner tank body. The sewage and high-pressure air are filled into the closed space for aerosolization. After the aerosolization is completed, the inner tank body rises, so that the lower port of the inner tank body is located above the input ports of the plurality of through holes of the lower sealing ring. The saturated aerosolized water inside the inner tank body is input between the upper sealing ring and the lower sealing ring through the plurality of through holes of the lower sealing ring and discharged into the chamber of the aerosolization tank through the plurality of small holes of the aerosolization tank, realizing the opening and closing of the small holes of the aerosolization tank. The structure is simple and the practicability is good.

[0010] Preferably, it further includes a connecting rod and a spring. The lower end of the connecting rod is connected to the inner tank body, the upper end of the connecting rod is slidably connected to the aerosolization tank, one end of the spring is connected to the connecting rod, and the other end of the spring is connected to the aerosolization tank. The elastic force of the spring pushes the inner tank body downward toward the lower part of the aerosolization tank. Select a suitable spring according to the pressure of the aerosolization of the high-pressure air and the sewage, so that when the sewage and the high-pressure air are fully aerosolized, the pressure inside the inner tank body is greater than the pressure of the spring on the inner tank body, causing the inner tank body to rise and thus opening the plurality of through holes of the lower sealing ring, realizing the setting of the aerosolization pressure, and the practicability is good.

[0011] Preferably, it further includes a sewage outlet, a driving motor and a scraper. The sewage outlet is arranged on the upper side wall of the aerosol tank. The driving motor is installed on the aerosol tank. One end of the scraper is installed on the output shaft of the driving motor. The lower end surface of the scraper is flush with the sewage outlet. The other end of the scraper extends into the chamber of the aerosol tank. The solid impurities in the sewage in the chamber of the aerosol tank are flocculated and float on the liquid surface. When the liquid surface approaches the sewage outlet, the flocculent solid impurities are discharged through the sewage outlet. At the same time, the driving motor drives the scraper to swing, and the scraper reciprocally scrapes the sewage liquid surface, so as to scrape the flocculent solid impurities into the sewage outlet, improving the discharging efficiency of the flocculent solid impurities.

[0012] Preferably, it further includes a liquid level probe. The liquid level probe is installed on the aerosol tank. The probe of the liquid level probe extends into the chamber of the aerosol tank. The probe of the liquid level probe is flush with the sewage outlet. When the sewage liquid surface contacts the liquid level probe, the liquid level probe generates a signal to close the first sewage branch pipe, thereby restricting the sewage liquid surface in the chamber of the aerosol tank and preventing sewage from being discharged through the sewage outlet, improving the reliability.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: During operation, sewage is input into the centrifugal box through the sewage inlet pipe. Since the output end of the sewage inlet pipe is close to the inner wall of the centrifugal box, the sewage rotates in the separation chamber of the centrifugal box. During the rotation and flow of the sewage, the solid impurities in the sewage move towards the inner wall of the centrifugal box and follow the sewage to be input into the chamber of the aerosol tank through the first sewage branch pipe. The sewage after separating out the solid impurities is input into the interior of the aerosol tank through the second sewage branch pipe. Compared with the prior art, it can perform primary centrifugal separation treatment on the sewage input into the aerosol tank and the aerosol pool, preventing sewage containing a large amount of solid impurities from entering the aerosol tank and blocking the multiple small holes in the aerosol tank, improving the reliability of the equipment. Description of the Drawings

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

[0015] Figure 2 is the axonometric partial sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is the axonometric structural schematic diagram of the present utility model;

[0017] Figure 4 is the structural schematic diagram of structures such as the aerosol tank, sewage outlet, driving motor, scraper and liquid level probe;

[0018] Figure 5 is the structural schematic diagram of structures such as the sewage inlet pipe, centrifugal box, first sewage branch pipe, second sewage branch pipe, medicine tank and medicine adding pipe;

[0019] Figure 6 is the structural schematic diagram of the aerosol tank; 7. Air compressor; 8. The opening and closing structure of the high-pressure air pipe and small holes.

[0020] Reference numerals in the drawings: 1. Aeration tank; 2. Sewage inlet pipe; 3. Centrifugal tank; 4. First sewage branch pipe; 5. Second sewage branch pipe; 6. Aeration tank; 7. Air compressor; 8. High-pressure air pipe; 9. Partition board; 10. Chemical agent tank; 11. Chemical agent adding pipe; 12. Upper sealing ring; 13. Lower sealing ring; 14. Inner tank body; 15. Connecting rod; 16. Spring; 17. Drain port; 18. Driving motor; 19. Scraper; 20. Liquid level probe. Specific embodiments

[0021] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present utility model more thorough and comprehensive. Embodiment 1

[0022] As Figures 1 to 3 and Figure 5 shown, a vertical-flow dissolved air flotation machine includes an aeration tank 1 and a sewage inlet pipe 2, and a chamber is provided inside the aeration tank 1; it further includes a centrifugal tank 3, a first sewage branch pipe 4, a second sewage branch pipe 5, an aeration tank 6, an air compressor 7 and a high-pressure air pipe 8. A separation chamber is provided inside the centrifugal tank 3. The output end of the sewage inlet pipe 2 extends into the upper part of the separation chamber of the centrifugal tank 3 and is close to the inner wall of the centrifugal tank 3. The input end of the first sewage branch pipe 4 extends into the lower part of the separation chamber of the centrifugal tank 3 and is close to the inner wall of the centrifugal tank 3. The output end of the first sewage branch pipe 4 extends into the upper part of the chamber of the aeration tank 1. The input end of the second sewage branch pipe 5 extends into the center of the bottom of the separation chamber of the centrifugal tank 3. The output end of the second sewage branch pipe 5 passes through the bottom of the aeration tank 1 and extends into the inside of the aeration tank 6. The aeration tank 6 is installed at the center of the bottom of the chamber of the aeration tank 1. A plurality of small holes are provided on the outer wall of the aeration tank 6. The input end of the high-pressure air pipe 8 is connected to the air outlet of the air compressor 7. The output end of the high-pressure air pipe 8 passes through the bottom of the aeration tank 1 and extends into the inside of the aeration tank 6. An opening and closing structure for the small holes is provided inside the aeration tank 6; it further includes a partition board 9, which is installed at the center of the bottom of the separation chamber of the centrifugal tank 3, and the input end of the second sewage branch pipe 5 is located inside the partition board 9; it further includes a chemical agent tank 10 and a chemical agent adding pipe 11. The chemical agent tank 10 is installed on the centrifugal tank 3. The input end of the chemical agent adding pipe 11 is connected to the chemical agent outlet of the aeration tank 1, and the output end of the chemical agent adding pipe 11 extends between the partition board 9 and the inner wall of the centrifugal tank 3.

[0023] During operation, sewage is input into the centrifugal tank 3 through the sewage inlet pipe 2. Since the output end of the sewage inlet pipe 2 is close to the inner wall of the centrifugal tank 3, the sewage rotates in the separation chamber of the centrifugal tank 3. During the rotation of the sewage flow, solid impurities in the sewage move towards the inner wall of the centrifugal tank 3. The partition baffle 9 divides the bottom of the rotating water flow in the separation chamber of the centrifugal tank 3 into an inner layer and an outer layer. The chemical agent tank 10 stores flocculants and the like. The flocculants are injected through the chemical agent adding pipe 11 between the partition baffle 9 and the chemical agent tank 10, so that the chemical agents such as flocculants are in full contact with the rotating water flow between the partition baffle 9 and the inner wall of the centrifugal tank 3, improving the mixing uniformity of the sewage and the flocculants. The solid impurities follow the outer-layer sewage and are input into the chamber of the aerosol tank 1 through the first sewage branch pipe 4. The inner-layer sewage after separating the solid impurities is input into the interior of the aerosol tank 6 through the second sewage branch pipe 5. When the sewage in the chamber of the aerosol tank 1 and the interior of the aerosol tank 6 is filled, the air compressor 7 starts to input high-pressure air into the interior of the aerosol tank 6 through the high-pressure air pipe 8, so that the air is forced to dissolve in the sewage inside the aerosol tank 6 to form aerosol water. When the air dissolved in the interior of the aerosol tank 6 is saturated, the opening and closing structure opens the multiple small holes of the aerosol tank 6, so that the saturated aerosol water is discharged into the chamber of the aerosol tank 1 through the multiple small holes to be mixed with the sewage and decompress to generate a large number of tiny bubbles. The tiny bubbles help the solid impurities in the sewage to be mixed and coagulated into flocculent dirt during the rising process. The flocculent dirt combines with the tiny bubbles. Due to the tiny bubbles, the density of the flocculent dirt is less than the density of water, and the flocculent dirt floats. Compared with the prior art, the sewage input into the aerosol tank and the aerosol tank can be subjected to primary centrifugal separation treatment, avoiding the sewage containing a large amount of solid impurities from entering the aerosol tank and blocking the multiple small holes of the aerosol tank 6, and improving the reliability of the equipment. Embodiment 2

[0024] As Figure 1 、 Figure 2 and Figure 6As shown, on the basis of Embodiment 1, the opening and closing structure of the small holes includes an upper sealing ring 12, a lower sealing ring 13 and an inner tank body 14. The upper sealing ring 12 is annularly installed on the upper inner wall of the aerosol tank 6, and the lower sealing ring 13 is annularly installed on the lower inner wall of the aerosol tank 6. The lower sealing ring 13 is located below the multiple small holes of the aerosol tank 6. Multiple through holes are evenly arranged on the lower sealing ring 13. The input ports of the multiple through holes are located in the middle of the inner wall of the lower sealing ring 13, and the output ports of the multiple through holes are located at the top end of the lower sealing ring 13. The upper end of the inner tank body 14 is closed, and the lower end of the inner tank body 14 is open. The upper outer wall of the inner tank body 14 is slidably connected to the inner wall of the upper sealing ring 12, and the lower outer wall of the inner tank body 14 is slidably connected to the inner wall of the lower sealing ring 13. Wear-resistant sealing rings are provided between the inner tank body 14 and the upper sealing ring 12, and between the inner tank body 14 and the lower sealing ring 13. It further includes a connecting rod 15 and a spring 16. The lower end of the connecting rod 15 is connected to the inner tank body 14, the upper end of the connecting rod 15 is slidably connected to the aerosol tank 6, one end of the spring 16 is connected to the connecting rod 15, and the other end of the spring 16 is connected to the aerosol tank 6. The elastic force of the spring 16 pushes the inner tank body 14 downward towards the lower part of the aerosol tank 6.

[0025] Select a suitable spring 16 according to the pressure of the high-pressure air and the sewage aerosol. When the sewage and high-pressure air are transported into the interior of the aerosol tank 6, the elastic force of the spring 16 pushes the inner tank body 14 downward, so that the inner tank body 14 is in a low position, making the lower port of the inner tank body 14 located below the input ports of the multiple through holes of the lower sealing ring 13, so that a closed space is formed inside the inner tank body 14. The sewage and high-pressure air are filled into the closed space for aerosol. After the aerosol is completed, the pressure inside the inner tank body 14 is greater than the pressure of the spring 16 on the inner tank body 14, causing the inner tank body 14 to rise, so that the lower port of the inner tank body 14 is located above the input ports of the multiple through holes of the lower sealing ring 13. The saturated aerosol water inside the inner tank body 14 is input between the upper sealing ring 12 and the lower sealing ring 13 through the multiple through holes of the lower sealing ring 13 and is discharged into the chamber of the aerosol pool 1 through the multiple small holes of the aerosol tank 6, realizing the opening and closing of the small holes of the aerosol tank 6. Embodiment 3

[0026] As Figures 1 to 4 As shown, on the basis of Embodiment 1, it further includes a sewage discharge port 17, a driving motor 18 and a scraper 19. A sewage discharge port 17 is provided on the upper side wall of the aerosol pool 1. The driving motor 18 is installed on the aerosol pool 1. One end of the scraper 19 is installed on the output shaft of the driving motor 18. The lower end surface of the scraper 19 is flush with the sewage discharge port 17, and the other end of the scraper 19 extends into the chamber of the aerosol pool 1. It further includes a liquid level probe 20. The liquid level probe 20 is installed on the aerosol pool 1. The probe of the liquid level probe 20 extends into the chamber of the aerosol pool 1, and the probe of the liquid level probe 20 is flush with the sewage discharge port 17.

[0027] After the solid impurities in the sewage in the chamber of the aerosol tank 1 are flocculated, they float on the liquid surface. When the liquid surface approaches the sewage discharge port 17 and contacts the liquid level probe 20, the liquid level probe 20 generates a signal to close the first sewage branch pipe 4, thereby restricting the sewage liquid level in the chamber of the aerosol tank 1 to prevent sewage from being discharged through the sewage discharge port 17. The flocculent solid impurities are discharged through the sewage discharge port 17. At the same time, the driving motor 18 drives the scraper 19 to swing, and the scraper 19 reciprocally scrapes the sewage liquid surface, thereby scraping the flocculent solid impurities into the sewage discharge port 17 to improve the discharge efficiency of the flocculent solid impurities.

[0028] As Figures 1 to 6 shown, for a vertical-flow dissolved air flotation machine of the present utility model, when it is working, first, sewage is input into the centrifugal tank 3 through the sewage inlet pipe 2. Since the output end of the sewage inlet pipe 2 is close to the inner wall of the centrifugal tank 3, the sewage rotates in the separation chamber of the centrifugal tank 3. During the rotation of the sewage flow, the solid impurities in the sewage move towards the inner wall of the centrifugal tank 3. The partition baffle 9 divides the bottom of the rotating water flow in the separation chamber of the centrifugal tank 3 into an inner layer and an outer layer, so that the solid impurities follow the inner layer of water and are input into the chamber of the aerosol tank 1 through the first sewage branch pipe 4, and the outer layer of water after separating the solid impurities is discharged into the interior of the aerosol tank 6 through the second sewage branch pipe 5. After that, when the sewage in the chamber of the aerosol tank 1 and the interior of the aerosol tank 6 is filled, the air compressor 7 starts to input high-pressure air into the interior of the aerosol tank 6 through the high-pressure air pipe 8, so that the air is forced to dissolve in the sewage in the interior of the aerosol tank 6 to form aerosol water. When the dissolved air in the interior of the aerosol tank 6 is saturated, the pressure inside the inner tank body 14 is greater than the pressure of the spring 16 on the inner tank body 14, so that the inner tank body 14 rises to open the multiple through holes of the lower sealing ring 13. Then, the lower port of the inner tank body 14 is located above the input ports of the multiple through holes of the lower sealing ring 13. The saturated aerosol water inside the inner tank body 14 is input between the upper sealing ring 12 and the lower sealing ring 13 through the multiple through holes of the lower sealing ring 13 and is discharged into the chamber of the aerosol tank 1 through the multiple small holes of the aerosol tank 6 to be mixed with the sewage and decompress to generate a large number of tiny bubbles. The tiny bubbles help the solid impurities in the sewage to be mixed and coagulated into flocculent pollutants during the rising process. The flocculent pollutants are combined with the tiny bubbles. Due to the tiny bubbles, the density of the flocculent pollutants is less than the density of water, and the flocculent pollutants float upward. Finally, when the liquid surface approaches the sewage discharge port 17, the flocculent solid impurities are discharged through the sewage discharge port 17. At the same time, the driving motor 18 drives the scraper 19 to swing, and the scraper 19 reciprocally scrapes the sewage liquid surface, so that the flocculent solid impurities can be scraped into the sewage discharge port 17.

[0029] The main functions achieved by the present utility model are:

[0030] 1. It can perform primary centrifugal separation on the sewage input into the aerosol tank and the aerosol tank, avoid clogging of the small holes in the aerosol tank, and improve the reliability of the equipment;

[0031] 2. It can evenly add flocculating agents;

[0032] 3. It can automatically start the aeration and flotation step after the air dissolution is completed;

[0033] 4. It can efficiently discharge flocculent solid impurities.

[0034] For a vertical-flow dissolved air flotation machine of the present utility model, its installation method, connection method or setting method are all common mechanical methods, and any implementation that can achieve its beneficial effects can be carried out; the air dissolution tank 1, sewage inlet pipe 2, centrifugal box 3, air dissolution tank 6, air compressor 7, chemical agent tank 10, chemical agent adding pipe 11, upper sealing ring 12, lower sealing ring 13, inner tank body 14, spring 16, drive motor 18, and scraper 19 of a vertical-flow dissolved air flotation machine of the present utility model are purchased on the market. Those skilled in the art only need to install and operate according to the attached operation manual, without the need for creative labor from those skilled in the art.

[0035] All the technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0036] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A vertical flow dissolved air flotation machine, comprising an air dissolution tank (1) and a sewage inlet pipe (2), and a chamber is arranged inside the air dissolution tank (1); characterized in that, It further includes a centrifugal box (3), a first sewage branch pipe (4), a second sewage branch pipe (5), an aerosol tank (6), an air compressor (7) and a high-pressure air pipe (8). A separation chamber is arranged inside the centrifugal box (3). The output end of the sewage inlet pipe (2) extends into the upper part of the separation chamber of the centrifugal box (3) and is close to the inner wall of the centrifugal box (3). The input end of the first sewage branch pipe (4) extends into the lower part of the separation chamber of the centrifugal box (3) and is close to the inner wall of the centrifugal box (3). The output end of the first sewage branch pipe (4) extends into the upper part of the chamber of the aerosol pool (1). The input end of the second sewage branch pipe (5) extends into the center of the bottom of the separation chamber of the centrifugal box (3). The output end of the second sewage branch pipe (5) passes through the bottom of the aerosol pool (1) and extends into the inside of the aerosol tank (6). The aerosol tank (6) is installed at the center of the bottom of the chamber of the aerosol pool (1). A plurality of small holes are arranged on the outer wall of the aerosol tank (6). The input end of the high-pressure air pipe (8) is connected to the air outlet hole of the air compressor (7). The output end of the high-pressure air pipe (8) passes through the bottom of the aerosol pool (1) and extends into the inside of the aerosol tank (6). An opening and closing structure for the small holes is arranged inside the aerosol tank (6).

2. The vertical-flow dissolved air flotation machine according to claim 1, characterized in that, It further includes a partition baffle (9). The partition baffle (9) is installed at the center of the bottom of the separation chamber of the centrifugal box (3). The input end of the second sewage branch pipe (5) is located inside the partition baffle (9).

3. The vertical flow dissolved air flotation machine according to claim 2, characterized in that, It further includes a chemical agent tank (10) and a chemical agent adding pipe (11). The chemical agent tank (10) is installed on the centrifugal box (3). The input end of the chemical agent adding pipe (11) is connected to the chemical agent outlet of the aerosol pool (1). The output end of the chemical agent adding pipe (11) extends between the partition baffle (9) and the inner wall of the centrifugal box (3).

4. The vertical-flow dissolved air flotation machine according to claim 1, wherein The opening and closing structure for the small holes includes an upper sealing ring (12), a lower sealing ring (13) and an inner tank body (14). The upper sealing ring (12) is annularly installed on the upper inner wall of the aerosol tank (6). The lower sealing ring (13) is annularly installed on the lower inner wall of the aerosol tank (6). The lower sealing ring (13) is located below the plurality of small holes of the aerosol tank (6). A plurality of through holes are evenly arranged on the lower sealing ring (13). The input ports of the plurality of through holes are located in the middle of the inner wall of the lower sealing ring (13). The output ports of the plurality of through holes are located at the top end of the lower sealing ring (13). The upper end of the inner tank body (14) is closed, and the lower end of the inner tank body (14) is open. The upper outer wall of the inner tank body (14) is slidably connected to the inner wall of the upper sealing ring (12). The lower outer wall of the inner tank body (14) is slidably connected to the inner wall of the lower sealing ring (13). Wear-resistant sealing rings are arranged between the inner tank body (14) and the upper sealing ring (12), and between the inner tank body (14) and the lower sealing ring (13).

5. The vertical-flow dissolved air flotation machine according to claim 4, characterized in that, It further includes a connecting rod (15) and a spring (16). The lower end of the connecting rod (15) is connected to the inner tank body (14). The upper end of the connecting rod (15) is slidably connected to the aerosol tank (6). One end of the spring (16) is connected to the connecting rod (15), and the other end of the spring (16) is connected to the aerosol tank (6). The elastic force of the spring (16) pushes the inner tank body (14) downward in the aerosol tank (6).

6. The vertical-flow dissolved air flotation machine according to claim 1, wherein It further includes a sewage outlet (17), a driving motor (18) and a scraper (19). The sewage outlet (17) is provided on the upper side wall of the aerosolization tank (1). The driving motor (18) is installed on the aerosolization tank (1). One end of the scraper (19) is installed on the output shaft of the driving motor (18). The lower end surface of the scraper (19) is flush with the sewage outlet (17). The other end of the scraper (19) extends into the chamber of the aerosolization tank (1).

7. The vertical-flow dissolved air flotation machine according to claim 6, wherein, It further includes a liquid level probe (20). The liquid level probe (20) is installed on the aerosolization tank (1). The probe of the liquid level probe (20) extends into the chamber of the aerosolization tank (1). The probe of the liquid level probe (20) is flush with the sewage outlet (17).

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