Aeration tank for sewage treatment

Abstract

The invention discloses an aeration tank for sewage treatment, and relates to the technical field of sewage treatment.The aeration tank comprises a tank body, a horizontal reciprocating mechanism and an aeration mechanism, the upper portion of the tank body is connected with a guide rail through a depth adjusting mechanism, the guide rail is slidably connected with a sliding seat, and the outer wall of the bottom of the sliding seat is fixedly connected with a box body; the aeration mechanism comprises a rotary driving assembly, a pipeline switching assembly, a water-gas dual-purpose pump, a rotary pipe, an aeration head, a stirring impeller and a cleaning anti-blocking assembly. The cleaning and anti-blocking assembly can automatically clean the inner wall of the aeration head in a continuous rotating state, so that the situation that air holes of the aeration head are seriously blocked is effectively avoided; the horizontal reciprocating mechanism is arranged, so that the aeration range of the aeration head can be expanded, the aerated air can be well and uniformly dispersed into sewage, and the sewage aeration effect is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to an aeration tank for sewage treatment. Background Art

[0002] An aeration tank is a device that uses the activated sludge method to treat sewage. Air or oxygen is continuously introduced into the aeration tank to provide the oxygen required by aerobic microorganisms. The sewage is then allowed to remain in the aeration tank for a period of time to allow the oxygen, activated sludge, and sewage in the aeration tank to fully contact each other, thereby forming flocs that are easier to precipitate in the subsequent steps of water treatment. Currently, existing aeration tanks have the following problems in actual use: First, the fluidity of sewage during aeration is poor, resulting in a low oxygen dissolution rate during aeration, and the pores on the surface of the aeration head are easily clogged, which in turn affects the aeration efficiency; Secondly, the aeration head is fixed in position and can only perform aeration treatment in a certain area. The aeration range is small and the air cannot be evenly distributed into the sewage, resulting in poor oxygenation effect of the sewage. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides an aeration tank for sewage treatment, which effectively solves the problem that the fluidity of sewage in the existing aeration tank during the aeration process is poor, resulting in a low oxygen dissolution rate during the aeration process, and the pores on the surface of the aeration head are easily clogged, thereby affecting the aeration efficiency. It also solves the problem that the aeration head in the existing technology is fixed in position and can often only perform aeration treatment in a certain area, the aeration range is small, and the aerated air cannot be evenly distributed into the sewage, thereby resulting in poor sewage oxygenation effect.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An aeration tank for sewage treatment, comprising a tank body, a horizontal reciprocating movement mechanism and an aeration mechanism, wherein the upper portion of the tank body is connected to a guide rail via a depth adjustment mechanism, a sliding seat is slidably connected to the guide rail, and a box is fixedly connected to the bottom outer wall of the sliding seat; The aeration mechanism includes a rotary drive assembly, a pipe adapter assembly, a water-air dual-purpose pump fixedly mounted on the rear outer wall of the sliding seat, a rotating pipe rotatably connected to the bottom of the box body, an aeration head concentrically fixedly connected to the bottom end of the rotating pipe, a stirring impeller concentrically fixedly connected to the bottom of the aeration head, and a cleaning and anti-blocking assembly provided in the aeration head; The rotary drive assembly includes a drive motor fixedly mounted on the side wall of the box body, a driving bevel gear fixedly sleeved on the output shaft of the drive motor, and a driven bevel gear fixedly sleeved on the upper part of the rotating tube; The cleaning and anti-blocking component includes a fixed frame connected to the outer wall of the rotating tube through a connecting bearing, a brush roller rotatably installed on the fixed frame, a No. 1 spur gear fixedly sleeved on the lower part of the rotating tube, and a No. 2 spur gear fixedly sleeved on the top of the brush roller and meshing with the No. 1 spur gear.

[0005] As a preferred technical solution of the present invention, the output shaft of the drive motor extends through the housing, and the driving bevel gear and the driven bevel gear mesh with each other and are both located in the housing.

[0006] As a preferred technical solution of the present invention, the pipeline adapter assembly includes a rotary joint and a tee joint. The rotating end of the rotary joint passes through the box body and is sealed and fixedly connected to the top end of the rotating tube. The fixed end of the rotary joint is sealed and fixedly connected through one end of the pipeline tee joint. The other two ends of the tee joint are sealed and fixedly connected to the inflation end and the liquid delivery end of the water-gas dual-purpose pump through pipelines, and the other two ends of the tee joint are respectively installed with an inflation solenoid valve and a liquid delivery solenoid valve.

[0007] As a preferred technical solution of the present invention, a medicine storage box is fixedly installed on the top outer wall of the sliding seat, and the liquid extraction end of the water-gas dual-purpose pump is fixedly connected to the medicine storage box through a pipeline. A filling pipe is provided on the top of the medicine storage box, and a sealing cover is threadedly connected to the filling pipe.

[0008] As a preferred technical solution of the present invention, the surface of the aeration head is provided with evenly distributed air holes, a one-way valve is installed at the lower part of the rotating tube, and the brush roller is in contact with the inner wall of the aeration head.

[0009] As a preferred technical solution of the present invention, the horizontal reciprocating movement mechanism includes a rack fixedly connected to the outer wall of the top of the guide rail, a first stepper motor fixedly installed on the outer wall of the front side of the sliding seat, and a transmission gear fixedly mounted on the output shaft of the first stepper motor. The output shaft of the first stepper motor passes through the front side of the sliding seat, and the transmission gear is engaged with the rack.

[0010] As a preferred technical solution of the present invention, the depth adjustment mechanism includes two symmetrically distributed threaded lifting assemblies, and the two threaded lifting assemblies each include a hollow shell welded to the side wall of the pool body, a screw rotatably installed in the hollow shell, a lifting rod threadedly connected to the screw, a fixed cover fixedly connected to the side wall of the hollow shell, a second stepper motor fixedly installed on the top outer wall of the fixed cover, an active synchronous wheel fixedly mounted on the output shaft of the second stepper motor, and a driven synchronous wheel fixedly mounted on the lower part of the screw.

[0011] As a preferred technical solution of the present invention, the output shaft of the second stepper motor passes through the top of the fixed cover, and the driving synchronous wheel and the driven synchronous wheel are connected through the same synchronous belt.

[0012] As a preferred technical solution of the present invention, a lifting slide is provided on the top of the hollow shell, the outer wall of the lifting rod is slidably connected to the inner wall of the lifting slide, and the top outer wall of the lifting rod is welded to the bottom outer wall of the guide rail.

[0013] As a preferred technical solution of the present invention, a main controller is fixed to the upper outer wall of the cell body through a support plate, a discharge pipe is fixedly connected to the lower part of the cell body, and a discharge solenoid valve is installed on the discharge pipe.

[0014] The beneficial effects of the present invention are: 1. The present invention enables the aeration head and the stirring impeller at the bottom to rotate within the tank body, thereby aerating and supplying oxygen to the sewage while also stirring it. The stirring is conducive to generating violent turbulence and circulation of the sewage, facilitating the breaking and refining of bubbles in the air, thereby increasing the dissolution rate of oxygen during the aeration process. The stirring is also conducive to improving the mixing efficiency of the chemical and the sewage during the subsequent spraying process. 2. The present invention can flexibly switch between aeration and spraying through the cooperation of the water-gas dual-purpose pump, the inflation solenoid valve and the liquid delivery solenoid valve, thereby improving the diversity of sewage treatment. The aeration holes with a porous structure can evenly diffuse the gas or liquid medicine into the sewage when rotating. 3. The cleaning and anti-blocking component provided in the present invention can automatically clean the inner wall of the aeration head in a continuously rotating state, thereby effectively avoiding serious blockage of the air holes of the aeration head; 4. The present invention is provided with a horizontal reciprocating movement mechanism. The first stepper motor drives the transmission gear to perform forward and reverse rotation. Then, under the meshing transmission of the transmission gear and the rack, the sliding seat will reciprocate horizontally along the guide rail, thereby expanding the aeration range of the aeration head and evenly distributing the aerated air into the sewage, effectively improving the sewage oxygenation effect. 5. The present invention is provided with a depth adjustment mechanism, which can flexibly adjust the aeration depth and the stirring position of the impeller, thereby better ensuring that sludge, sewage and oxygen at different depths are fully mixed, thereby improving sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2Schematic diagram of the vertical cross-section structure of the tank body in the present invention; Figure 3 This is a three-dimensional enlarged structural diagram of the connection between the rotating tube, the aeration head and the stirring blades in the present invention; Figure 4 Schematic diagram of the vertical cross-section structure of the aeration head of the present invention; Figure 5 This is a schematic diagram of the three-dimensional enlarged structure of the cleaning and anti-blocking component of the present invention; Figure 6 It is a three-dimensional enlarged structural diagram of a local part of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the front structure of FIG. Figure 8 It is a three-dimensional enlarged structural schematic diagram of the horizontal reciprocating motion mechanism in the present invention; Figure 9 Schematic diagram of the vertical cross-section structure of the threaded lifting assembly in the present invention; Figure 10 It is a three-dimensional enlarged structural diagram of the local parts of the threaded lifting assembly of the present invention.

[0017] In the figure: 1. tank body; 2. guide rail; 3. sliding seat; 4. box body; 5. water-gas dual-purpose pump; 6. rotating pipe; 7. aeration head; 8. stirring impeller; 9. driving motor; 10. driving bevel gear; 11. driven bevel gear; 12. rotary joint; 13. three-way joint; 14. reagent storage box; 15. air hole; 16. fixing frame; 17. brush roller; 18. No. 1 spur gear; 19. No. 2 spur gear; 20. rack; 21. first stepper motor; 22. transmission gear; 23. hollow shell; 24. lead screw; 25. lifting rod; 26. fixed cover; 27. second stepper motor; 28. driving synchronous pulley; 29. ​​driven synchronous pulley; 30. synchronous belt; 31. main controller; 32. discharge pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example 1, with reference to Figure 1-7 A sewage treatment aeration tank includes a tank body 1, a horizontal reciprocating motion mechanism, and an aeration mechanism. A master controller 31 is fixed to the upper outer wall of the tank body 1 via a support plate. The master controller 31 can control the operation of all electrical components of the present invention. A discharge pipe 32 is fixedly connected to the lower portion of the tank body 1. A discharge solenoid valve is installed on the discharge pipe 32. After sewage treatment is completed, the sewage in the tank body 1 can be automatically discharged by activating the discharge solenoid valve. In this embodiment, a guide rail 2 is connected to the top of the pool body 1 through a depth adjustment mechanism, a sliding seat 3 is slidably connected to the guide rail 2, and a box body 4 is fixedly connected to the bottom outer wall of the sliding seat 3; Specifically, the aeration mechanism includes a rotary drive assembly, a pipe adapter assembly, a water-gas dual-purpose pump 5 fixedly mounted on the rear outer wall of the sliding seat 3, a rotating pipe 6 rotatably connected to the bottom of the box body 4, an aeration head 7 concentrically fixedly connected to the bottom end of the rotating pipe 6, a stirring impeller 8 concentrically fixedly connected to the bottom of the aeration head 7, and a cleaning and anti-blocking assembly provided in the aeration head 7; Furthermore, the rotary drive assembly includes a drive motor 9 fixedly mounted on the side wall of the housing 4, a driving bevel gear 10 fixedly sleeved on the output shaft of the drive motor 9, and a driven bevel gear 11 fixedly sleeved on the upper part of the rotating tube 6. The output shaft of the drive motor 9 extends through the housing 4. The driving bevel gear 10 and the driven bevel gear 11 are meshed with each other and are both located in the housing 4. Furthermore, the cleaning and anti-blocking assembly includes a fixing frame 16 connected to the outer wall of the rotating tube 6 through a connecting bearing, a brush roller 17 rotatably mounted on the fixing frame 16, a first spur gear 18 fixedly sleeved on the lower part of the rotating tube 6, and a second spur gear 19 fixedly sleeved on the top of the brush roller 17 and meshing with the first spur gear 18; Furthermore, the pipeline adapter assembly includes a rotary joint 12 and a tee joint 13. The rotating end of the rotary joint 12 passes through the box body 4 and is sealed and fixedly connected to the top end of the rotary tube 6. The fixed end of the rotary joint 12 is sealed and fixedly connected through one end of the pipeline tee joint 13. The other two ends of the tee joint 13 are sealed and fixedly connected to the inflation end and the liquid delivery end of the water-gas dual-purpose pump 5 through pipelines. The other two ends of the tee joint 13 are respectively installed with an inflation solenoid valve and a liquid delivery solenoid valve; Furthermore, a reagent storage tank 14 is fixedly mounted on the top outer wall of the sliding seat 3. The liquid extraction end of the water-gas dual-purpose pump 5 is fixedly connected to the reagent storage tank 14 via a pipeline. A filling pipe is provided on the top of the reagent storage tank 14. A sealing cap is threadedly connected to the filling pipe. By opening the sealing cap, the required sewage treatment reagent can be added to the reagent storage tank 14 from the filling pipe. The surface of the aeration head 7 is provided with evenly distributed air holes 15. A one-way valve is installed at the lower part of the rotating tube 6. The brush roller 17 is in contact with the inner wall of the aeration head 7. The usage of this embodiment is as follows: first, the driving motor 9 drives the active bevel gear 10 to rotate, and then the driven bevel gear 11 meshing with the active bevel gear 10 drives the rotating tube 6 to rotate, and then the aeration head 7 and the stirring impeller 8 at the bottom end of the rotating tube 6 rotate together; secondly, the inflation solenoid valve is started and inflated through the inflation end of the water-gas dual-purpose pump 5, and the gas enters the rotating tube 6 through the rotary joint 12, and then diffuses from the air holes 15 evenly distributed on the surface of the aeration head 7 to aerate and oxygenate the sewage, and when it is necessary to spray the agent, the inflation solenoid valve is closed and the liquid delivery solenoid valve is started. At this time, the water-gas dual-purpose pump 5 will automatically switch to the pumping mode. The operation mode is such that the medicine in the medicine storage box 14 can be drawn out and sent into the rotating tube 6 through the rotary joint 12, and then diffused into the sewage through the air holes 15 evenly distributed on the surface of the aeration head 7 for treatment; finally, since the fixing frame 16 is connected to the outer wall of the rotating tube 6 through the connecting bearing, the fixing frame 16 will not rotate when the rotating tube 6 rotates, but the No. 1 spur gear 18 will rotate, and the No. 2 spur gear 19 meshing with it will drive the brush roller 17 to rotate, thereby automatically cleaning the inner wall of the aeration head 7 in a continuously rotating state, thereby effectively avoiding the serious blockage of the air holes 15 of the aeration head 7; In summary, this embodiment can aerate and oxygenate the sewage while also stirring it. Stirring is beneficial for causing violent turbulence and circulation of the sewage, making it easier to break up and refine the bubbles in the air, thereby increasing the dissolution rate of oxygen during the aeration process. Stirring is also beneficial for improving the mixing efficiency of the agent and sewage during the spraying process.

[0020] Example 2, reference Figure 1 and Figure 8 This embodiment is optimized based on the first embodiment. Specifically, the horizontal reciprocating movement mechanism includes a rack 20 fixedly connected to the top outer wall of the guide rail 2, a first stepper motor 21 fixedly mounted on the front outer wall of the sliding seat 3, and a transmission gear 22 fixedly mounted on the output shaft of the first stepper motor 21. The output shaft of the first stepper motor 21 passes through the front of the sliding seat 3, and the transmission gear 22 is engaged with the rack 20. The usage of this embodiment is as follows: the first stepper motor 21 drives the transmission gear 22 to perform forward and reverse rotation, and then under the meshing transmission of the transmission gear 22 and the rack 20, the sliding seat 3 will reciprocate horizontally along the guide rail 2, thereby expanding the aeration range of the aeration head 7, and can well distribute the aerated air evenly into the sewage, effectively improving the sewage oxygenation effect.

[0021] Example 3, reference Figure 2 and Figure 9-10This embodiment is optimized based on the first embodiment. Specifically, the depth adjustment mechanism includes two symmetrically distributed threaded lifting assemblies, each of which includes a hollow shell 23 welded to the side wall of the tank body 1, a lead screw 24 rotatably mounted in the hollow shell 23, a lifting rod 25 threadedly connected to the lead screw 24, a fixed cover 26 fixedly connected to the side wall of the hollow shell 23, a second stepping motor 27 fixedly mounted on the top outer wall of the fixed cover 26, an active synchronous wheel 28 fixedly mounted on the output shaft of the second stepping motor 27, and a driven synchronous wheel 29 fixedly mounted on the lower part of the lead screw 24; Furthermore, the output shaft of the second stepper motor 27 passes through the top of the fixed cover 26, and the driving synchronous wheel 28 and the driven synchronous wheel 29 are connected by the same synchronous belt 30. A lifting slide is provided on the top of the hollow shell 23, and the outer wall of the lifting rod 25 is slidably connected to the inner wall of the lifting slide. The top outer wall of the lifting rod 25 is welded to the bottom outer wall of the guide rail 2; The usage of this embodiment is as follows: the active synchronous wheel 28 is driven to rotate by the second stepper motor 27, and then under the synchronous transmission effect of the synchronous belt 30, the driven synchronous wheel 29 drives the screw 24 to rotate, and then under the limit of the lifting slide, the lifting rod 25 threadedly connected to the screw 24 will perform a lifting movement. In this way, the two threaded lifting components can be controlled to operate synchronously through the main controller 31, and then the two lifting rods 25 will operate synchronously to make the guide rail 2 perform a lifting movement, so that the aeration depth and the stirring position of the impeller 8 can be flexibly adjusted, which can better ensure that the sludge, sewage and oxygen at different depths are fully mixed, thereby improving the sewage treatment efficiency.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such a process, method, article or device.

[0023] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An aeration tank for sewage treatment, comprising a tank body (1), characterized in that: It also includes a horizontal reciprocating movement mechanism and an aeration mechanism. The upper portion of the tank body (1) is connected to a guide rail (2) via a depth adjustment mechanism. A sliding seat (3) is slidably connected to the guide rail (2), and the bottom outer wall of the sliding seat (3) is fixedly connected to a box body (4). The aeration mechanism comprises a rotary drive assembly, a pipe adapter assembly, a water-air dual-purpose pump (5) fixedly mounted on the rear outer wall of the sliding seat (3), a rotary tube (6) rotatably connected to the bottom of the box body (4), an aeration head (7) concentrically fixedly connected to the bottom end of the rotary tube (6), a stirring impeller (8) concentrically fixedly connected to the bottom of the aeration head (7), and a cleaning and anti-blocking assembly provided in the aeration head (7); The rotary drive assembly comprises a drive motor (9) fixedly mounted on the side wall of the box (4), a driving bevel gear (10) fixedly sleeved on the output shaft of the drive motor (9), and a driven bevel gear (11) fixedly sleeved on the upper part of the rotating tube (6); The cleaning and anti-blocking assembly comprises a fixed frame (16) connected to the outer wall of the rotating tube (6) via a connecting bearing, a brush roller (17) rotatably mounted on the fixed frame (16), a first spur gear (18) fixedly sleeved on the lower part of the rotating tube (6), and a second spur gear (19) fixedly sleeved on the top of the brush roller (17) and meshing with the first spur gear (18).

2. The aeration tank for sewage treatment according to claim 1, characterized in that: The output shaft of the driving motor (9) extends through the housing (4), and the driving bevel gear (10) and the driven bevel gear (11) mesh with each other and are both located in the housing (4).

3. The aeration tank for sewage treatment according to claim 1, characterized in that: The pipeline adapter assembly comprises a rotary joint (12) and a three-way joint (13); the rotary end of the rotary joint (12) passes through the box body (4) and is sealed and fixedly connected to the top end of the rotary tube (6); the fixed end of the rotary joint (12) is sealed and fixedly connected through one end of the pipeline three-way joint (13); the other two ends of the three-way joint (13) are sealed and fixedly connected to the inflation end and the liquid delivery end of the water-gas dual-purpose pump (5) through pipelines, and the other two ends of the three-way joint (13) are respectively installed with an inflation solenoid valve and a liquid delivery solenoid valve.

4. The aeration tank for sewage treatment according to claim 1, characterized in that: A medicine storage box (14) is fixedly mounted on the top outer wall of the sliding seat (3), and the liquid extraction end of the water-gas dual-purpose pump (5) is fixedly connected to the medicine storage box (14) through a pipeline. A filling pipe is provided on the top of the medicine storage box (14), and a sealing cover is threadedly connected to the filling pipe.

5. The aeration tank for sewage treatment according to claim 1, characterized in that: The surface of the aeration head (7) is provided with evenly distributed air holes (15), a one-way valve is installed at the lower part of the rotating tube (6), and the brush roller (17) is in contact with the inner wall of the aeration head (7).

6. The aeration tank for sewage treatment according to claim 1, characterized in that: The horizontal reciprocating mechanism comprises a rack (20) fixedly connected to the top outer wall of the guide rail (2), a first stepper motor (21) fixedly mounted on the front outer wall of the sliding seat (3), and a transmission gear (22) fixedly sleeved on the output shaft of the first stepper motor (21), wherein the output shaft of the first stepper motor (21) passes through the front of the sliding seat (3), and the transmission gear (22) is engaged with the rack (20).

7. The aeration tank for sewage treatment according to claim 1, characterized in that: The depth adjustment mechanism includes two symmetrically distributed threaded lifting assemblies, and both threaded lifting assemblies include a hollow shell (23) welded to the side wall of the pool body (1), a lead screw (24) rotatably installed in the hollow shell (23), a lifting rod (25) threadedly connected to the lead screw (24), a fixed cover (26) fixedly connected to the side wall of the hollow shell (23), a second stepping motor (27) fixedly installed on the top outer wall of the fixed cover (26), an active synchronous wheel (28) fixedly mounted on the output shaft of the second stepping motor (27), and a driven synchronous wheel (29) fixedly mounted on the lower part of the lead screw (24).

8. The aeration tank for sewage treatment according to claim 7, characterized in that: The output shaft of the second stepper motor (27) passes through the top of the fixed cover (26), and the active synchronous wheel (28) and the driven synchronous wheel (29) are connected by a same synchronous belt (30).

9. The aeration tank for sewage treatment according to claim 7, characterized in that: A lifting slide is provided on the top of the hollow shell (23); the outer wall of the lifting rod (25) is slidably connected to the inner wall of the lifting slide, and the top outer wall of the lifting rod (25) is welded to the bottom outer wall of the guide rail (2).

10. The aeration tank for sewage treatment according to claim 1, characterized in that: A main controller (31) is fixed to the upper outer wall of the pool body (1) via a support plate, and a discharge pipe (32) is fixedly connected to the lower part of the pool body (1), and a discharge solenoid valve is installed on the discharge pipe (32).

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