High-efficiency flocculation reaction tank for sewage treatment

Abstract

The utility model discloses a kind of high-efficiency flocculation reaction tank for sewage treatment, it is related to sewage treatment field, including reaction tank body, the top of reaction tank body is equipped with sealing cover, the top of sealing cover is equipped with aeration pipe, feed pipe, dosing pipe and servo motor, overflow hole is opened in the outer wall of inner cylinder, the bottom of driving assembly is rotatably connected with gear set, the bottom of gear set is provided with stirring roll, the outer wall of stirring roll is equipped with paddle, the bottom of reaction tank body inner chamber is equipped with vortex separation cover, the outer wall of vortex separation cover is equipped with guide vane. The utility model said a kind of high-efficiency flocculation reaction tank for sewage treatment, when paddle is contacted with wastewater in the inner cavity of inner cylinder, it can produce autorotation with the inner cylinder in opposite direction, based on this can produce compound flow field in the inner cavity of inner cylinder, can effectively solve the contradiction between mixing uniformity and flocculation protection, can produce efficient dynamic separation zone, can effectively improve reaction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to a high-efficiency flocculation reaction tank for wastewater treatment. Background Technology

[0002] Wastewater treatment is a key step in ensuring that water quality meets discharge or reuse standards. Flocculation and sedimentation is one of the core processes. By adding flocculants, suspended particles in the water are aggregated and enlarged to form flocs that are easy to settle and separate, thereby achieving solid-liquid separation.

[0003] In traditional wastewater treatment processes, the flocculation reactor is the main equipment for this process, and its performance directly affects the flocculation effect, treatment efficiency, and operating costs. Currently, most common flocculation reactors use a single stirring shaft to drive fixed impellers for mixing. While the structure is simple, several inherent defects have been exposed in actual operation. First, traditional stirring methods often fail to achieve rapid and uniform mixing of flocculants and wastewater. The existence of mixing dead zones leads to low reaction efficiency and increased flocculant dosage. Second, the flow field generated during stirring is singular and the shear force distribution is uneven. Especially during the floc growth stage, excessive local shear force can easily cause the already formed fragile flocs to break, while weak shear areas cannot provide sufficient collision and aggregation opportunities, restricting the effective growth of floc particle size and ultimately affecting the settling velocity and effluent quality. Furthermore, many existing devices concentrate mixing, reaction, and sedimentation functions within a single tank, lacking an effective dynamic separation mechanism.

[0004] Therefore, it is necessary to propose a high-efficiency flocculation reactor for wastewater treatment to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a high-efficiency flocculation reactor for wastewater treatment, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A high-efficiency flocculation reactor for wastewater treatment includes a reactor body, a sealing cover installed on the top of the reactor body, an aeration pipe, a feed pipe, a feeding pipe and a servo motor installed on the top of the sealing cover, and an inner cylinder rotatably connected to the inner cavity of the reactor body, with an overflow hole opened on the outer wall of the inner cylinder. A turntable is rotatably connected to the top of the inner cavity of the reaction vessel body. A drive assembly is provided in the inner cavity of the turntable. A gear set is rotatably connected to the bottom of the drive assembly. A stirring roller is provided at the bottom of the gear set. A paddle is installed on the outer wall of the stirring roller. A vortex separation hood is installed at the bottom of the inner cavity of the reaction vessel body. A guide vane is installed on the outer wall of the vortex separation hood.

[0007] Preferably, support columns are symmetrically installed around the bottom of the reaction vessel body, a discharge pipe is installed on the outer wall of the reaction vessel body, the drive assembly is installed in the center of the bottom of the sealing cover, the bottom of the feed pipe and the feeding pipe both pass through the drive assembly and extend into the inner cavity of the inner cylinder, and the outer walls of the feed pipe, the feeding pipe and the discharge pipe are all flanged with valves.

[0008] Preferably, the gear set has four gears, including one sun gear and three planetary gears. The bottom of the servo motor is mounted on the top of the sun gear via a rotating shaft. The sun gear is rotatably connected to the center of the bottom of the drive assembly, and the planetary gears mesh with the outer ring of the sun gear.

[0009] Preferably, the stirring roller and the blade are rotatably connected to the inner cavity of the inner cylinder, the outer wall of the blade is provided with micropores, the top of the stirring roller is rotatably connected to the center of the bottom of the planetary gear, and the aeration pipe communicates with the inner cavity of the micropores through the blade.

[0010] Preferably, a driven gear ring is installed at the top of the outer wall of the inner cylinder, a bottom gear ring is installed at the bottom of the inner cavity of the turntable, and a top gear ring is installed at the top of the inner cavity of the turntable. The top gear ring meshes with the planetary gear, and the bottom gear ring meshes with the driven gear ring.

[0011] Preferably, the vortex separation hood is fitted onto the bottom of the outer wall of the inner cylinder, and a scraper is installed at the bottom of the outer wall of the inner cylinder, with the outer wall of the scraper adhering to the inner wall of the reaction vessel body.

[0012] Compared with the prior art, the present invention has the following beneficial effects: This high-efficiency flocculation reactor for wastewater treatment uses a servo motor to drive a turntable via a gear set. The turntable rotates, and the inner cylinder rotates via a bottom gear ring. When the impeller comes into contact with the wastewater in the inner cylinder, it rotates in the opposite direction to the inner cylinder. This generates a composite flow field in the inner cylinder, effectively resolving the contradiction between mixing uniformity and floc protection. It creates a highly efficient dynamic separation zone and effectively improves reaction efficiency.

[0013] This high-efficiency flocculation reactor for wastewater treatment generates microbubbles through micropores via aeration pipes. This serves two purposes: firstly, it aids in the coagulation of air flotation, and secondly, it helps to self-clean the impeller blades, preventing clogging.

[0014] This high-efficiency flocculation reactor for wastewater treatment utilizes a vortex separation hood and guide vanes. Due to the continuous rotation of the inner cylinder, the liquid flowing out of the flow holes has a tangential velocity. When it enters the stationary vortex separation hood, the guide vanes can convert the tangential flow into a stable strong vortex. Therefore, the denser flocs are thrown towards the inner wall of the reactor body under centrifugal force and settle to the bottom along the wall, while the clarified liquid gathers towards the center of the vortex, forming a low-pressure zone and flowing upward. At this time, the treated clarified liquid can be discharged through the discharge pipe. Subsequently, the vortex separation hood can be removed to clean up the settled impurities. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal cavity of the reaction vessel body of this utility model; Figure 3 This is a schematic diagram of the structure of the drive component of this utility model; Figure 4 This is a schematic diagram of the inner cylinder of this utility model.

[0016] In the diagram: 1. Reactor body; 2. Discharge pipe; 3. Support column; 4. Sealing cover; 5. Servo motor; 6. Aeration pipe; 7. Feed pipe; 8. Inner cylinder; 9. Driven gear ring; 10. Turntable; 11. Bottom gear ring; 12. Top gear ring; 13. Drive assembly; 14. Gear set; 15. Stirring roller; 16. Paddle; 17. Micropore; 18. Vortex separator; 19. Guide vane; 20. Flow hole; 21. Scraper; 22. Feed pipe. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Example 1: like Figures 1-4As shown, a high-efficiency flocculation reactor for wastewater treatment includes a reactor body 1. A sealing cover 4 is installed on the top of the reactor body 1. An aeration pipe 6, a feed pipe 7, a feeding pipe 22, and a servo motor 5 are installed on the top of the sealing cover 4. An inner cylinder 8 is rotatably connected to the inner cavity of the reactor body 1. An overflow hole 20 is opened on the outer wall of the inner cylinder 8. Support columns 3 are symmetrically installed around the bottom of the reactor body 1. A discharge pipe 2 is installed on the outer wall of the reactor body 1. A drive assembly 13 is installed in the center of the bottom of the sealing cover 4. The bottoms of the feed pipe 7 and the feeding pipe 22 both pass through the drive assembly 13 and extend into the inner cylinder 8. Inside the cavity, the outer walls of the feed pipe 7, feeding pipe 22, and discharge pipe 2 are all flanged with valves. The gear set 14 has four gears, including one sun gear and three planetary gears. The bottom of the servo motor 5 is mounted on the top of the sun gear via a rotating shaft. The sun gear is rotatably connected to the center of the bottom of the drive assembly 13. The planetary gears mesh on the outer ring of the sun gear. The stirring roller 15 and the blade 16 are rotatably connected to the inner cavity of the inner cylinder 8. The outer wall of the blade 16 is provided with micropores 17. The top of the stirring roller 15 is rotatably connected to the center of the bottom of the planetary gear. The aeration pipe 6 communicates with the inner cavity of the micropores 17 through the blade 16.

[0019] Example 2: like Figures 1-4 As shown, a high-efficiency flocculation reactor for wastewater treatment has a turntable 10 rotatably connected to the top of the inner cavity of the reactor body 1. A drive assembly 13 is installed in the inner cavity of the turntable 10, and a gear set 14 is rotatably connected to the bottom of the drive assembly 13. A stirring roller 15 is installed at the bottom of the gear set 14, and a blade 16 is installed on the outer wall of the stirring roller 15. A vortex separation hood 18 is installed at the bottom of the inner cavity of the reactor body 1, and a guide vane 19 is installed on the outer wall of the vortex separation hood 18. A driven gear ring 9 is installed at the top of the outer wall of the inner cylinder 8. A bottom gear ring 11 is installed at the bottom of the inner cavity of the turntable 10, and a top gear ring 12 is installed at the top of the inner cavity of the turntable 10. The top gear ring 12 meshes with a planetary gear, and the bottom gear ring 11 meshes with the driven gear ring 9. The vortex separation hood 18 is fitted onto the bottom of the outer wall of the inner cylinder 8, and a scraper 21 is installed at the bottom of the outer wall of the inner cylinder 8. The outer wall of the scraper 21 is attached to the inner wall of the reactor body 1.

[0020] It should be noted that this utility model is a high-efficiency flocculation reaction tank for sewage treatment. When in use, the servo motor 5 is started, which drives the gear set 14 to rotate. After the gear set 14 rotates, it will drive the turntable 10 to rotate through the top gear ring 12. The turntable 10 will drive the driven gear ring 9 to rotate through the bottom gear ring 11. At this time, the inner cylinder 8 revolves. Wastewater is injected into the inner cavity of the inner cylinder 8 through the feed pipe 7. Flocculant is added into the inner cavity of the inner cylinder 8 through the feed pipe 22. The aeration pipe 6 is started, and microbubbles are generated in the inner cavity of the inner cylinder 8 through the micropores 17. After the blade 16 comes into contact with the liquid inside the inner cylinder 8, it will rotate in the opposite direction of the rotation of the inner cylinder 8, thus uniformly mixing the sewage and flocculant, while avoiding the shearing and breaking of the flocs already formed inside the inner cylinder 8. At this time, the mixed liquid in the inner cylinder 8 flows and enters the area between the reaction tank body 1 and the inner cylinder 8 through the flow hole 20. With the help of the vortex separation hood 18 and the guide vane 19, the tangential flow of the liquid can be transformed into a stable strong vortex. At this time, the denser flocs are thrown towards the inner wall of the reaction tank body 1 under the action of centrifugal force and settle to the bottom along the wall, while the clarified liquid gathers towards the center of the vortex, forming a low-pressure zone and flowing upward. At this time, it can be discharged through the discharge pipe 2. When the inner cylinder 8 rotates, it will drive the scraper 21 to clean the inner wall of the reaction tank body 1, preventing the sediment from accumulating on the inner wall of the reaction tank body 1. After the clarified liquid is discharged, the vortex separation hood 18 can be removed to clean the remaining sediment.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency flocculation reactor for wastewater treatment, comprising a reactor body (1), characterized in that: The top of the reaction tank body (1) is equipped with a sealing cover (4), and the top of the sealing cover (4) is equipped with an aeration pipe (6), a feed pipe (7), a feeding pipe (22) and a servo motor (5). An inner cylinder (8) is rotatably connected in the inner cavity of the reaction tank body (1), and an overflow hole (20) is opened on the outer wall of the inner cylinder (8). A turntable (10) is rotatably connected to the top of the inner cavity of the reaction vessel body (1). A drive assembly (13) is provided in the inner cavity of the turntable (10). A gear set (14) is rotatably connected to the bottom of the drive assembly (13). A stirring roller (15) is provided at the bottom of the gear set (14). A paddle (16) is installed on the outer wall of the stirring roller (15). A vortex separation hood (18) is installed at the bottom of the inner cavity of the reaction vessel body (1). A guide vane (19) is installed on the outer wall of the vortex separation hood (18).

2. The high-efficiency flocculation reactor for wastewater treatment according to claim 1, characterized in that: Support columns (3) are symmetrically installed around the bottom of the reaction vessel body (1). A discharge pipe (2) is installed on the outer wall of the reaction vessel body (1). The drive assembly (13) is installed in the center of the bottom of the sealing cover (4). The bottom of the feed pipe (7) and the feeding pipe (22) both pass through the drive assembly (13) and extend into the inner cavity of the inner cylinder (8). The outer walls of the feed pipe (7), the feeding pipe (22) and the discharge pipe (2) are all connected to valves by flanges.

3. The high-efficiency flocculation reactor for wastewater treatment according to claim 1, characterized in that: The gear set (14) has four gears, including one sun gear and three planetary gears. The bottom of the servo motor (5) is mounted on the top of the sun gear via a rotating shaft. The sun gear is rotatably connected to the center of the bottom of the drive assembly (13). The planetary gears mesh with the outer ring of the sun gear.

4. The high-efficiency flocculation reactor for wastewater treatment according to claim 3, characterized in that: The stirring roller (15) and the blade (16) are rotatably connected in the inner cavity of the inner cylinder (8). The outer wall of the blade (16) is provided with micro-holes (17). The top of the stirring roller (15) is rotatably connected to the center of the bottom of the planetary gear. The aeration pipe (6) communicates with the inner cavity of the micro-holes (17) through the blade (16).

5. The high-efficiency flocculation reactor for wastewater treatment according to claim 4, characterized in that: A driven gear ring (9) is installed on the top of the outer wall of the inner cylinder (8), a bottom gear ring (11) is installed at the bottom of the inner cavity of the turntable (10), and a top gear ring (12) is installed on the top of the inner cavity of the turntable (10). The top gear ring (12) meshes with the planetary gear, and the bottom gear ring (11) meshes with the driven gear ring (9).

6. The high-efficiency flocculation reactor for wastewater treatment according to claim 1, characterized in that: The vortex separation hood (18) is fitted at the bottom of the outer wall of the inner cylinder (8), and a scraper (21) is installed at the bottom of the outer wall of the inner cylinder (8). The outer wall of the scraper (21) is attached to the inner wall of the reaction vessel body (1).

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