An aeration device for municipal sewage treatment

Abstract

The utility model discloses an aeration device for urban sewage treatment, including aeration tank, the top fixedly connected with the shell of aeration tank inside intercommunication, is equipped with the filter component of carrying out the filtration to sewage in the shell, one side inner wall of aeration tank is rotated screw rod through waterproof bearing, and the outside screw thread connection of screw rod has the connecting frame, and the outside fixedly connected with annular pipe of connecting frame, and the both sides of annular pipe all are set up with a plurality of aeration holes, and the fixed link of passing through connecting frame is fixedly connected in aeration tank. The utility model not only can make gas and sewage contact mix fully fast, improve the mixing efficiency of sewage and oxygen in air, thereby improved aeration effect, but also can filter the impurity in sewage, reduce the impurity in sewage, improved the use effect of aeration device, still can avoid the filter hole of impurity and block, improved the use effect of filter board.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an aeration device for urban wastewater treatment. Background Technology

[0002] Urban sewage refers to wastewater generated in daily urban life, mainly including domestic sewage, some industrial wastewater, and surface runoff carrying pollutants at the beginning of rainfall. It is generally collected by urban pipes and should be treated by urban sewage treatment plants before being discharged into water bodies. Currently, aeration devices are often used in the process of urban sewage treatment.

[0003] A search revealed that CN220550067U discloses an aeration device for urban sewage treatment, comprising a tank body. An aeration pump is connected to the bottom right side of the tank body, and a shell is fixedly connected to the bottom surface of the tank body. A first motor is fixedly connected to the right side of the shell surface. The background art states that "existing aeration devices can only perform single aeration treatment, have slow working efficiency, and lack an effective stirring mechanism, resulting in slow sewage aeration progress and thus reducing subsequent treatment efficiency." In order to better address the above problems, promote the development of industry technology, and improve core competitiveness, this application proposes a new composition structure that differs from the existing technology. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an aeration device for urban sewage treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An aeration device for urban sewage treatment includes an aeration box. A shell connected to the top of the aeration box and communicating with its interior is fixedly connected. A filter assembly for filtering sewage is installed inside the shell. A threaded rod is rotatably connected to one inner wall of the aeration box via a waterproof bearing. A connecting frame is threadedly connected to the outer side of the threaded rod. An annular pipe is fixedly connected to the outer side of the connecting frame. Multiple aeration holes are opened on both sides of the annular pipe. A fixing rod passing through the connecting frame is fixedly connected inside the aeration box. An aeration pump is fixedly connected to one outer wall of the aeration box. A spring hose is connected to one end of the aeration pump's air outlet via a flange. One end of the spring hose passes through the aeration box and communicates with the annular pipe. A motor is fixedly connected to the other outer wall of the aeration box, and the threaded rod passes through the aeration box and is fixed to the motor's output shaft via a coupling.

[0007] The bottom inner wall of the aeration box is rotatably connected to multiple connecting shafts on both sides of the annular tube via waterproof bearings. Multiple frames are fixedly connected to the outside of the multiple connecting shafts. Rotating shafts are rotatably connected to the inside of the multiple frames via waterproof bearings. Multiple stirring racks are fixedly connected to the outside of the rotating shafts. Gears are connected to the top of the multiple connecting shafts through the aeration box key. The top of the aeration box is provided with a drive assembly for driving the connecting shafts to reciprocate.

[0008] As a further embodiment of this utility model, the filter assembly includes a filter plate, and the inner walls on both sides of the housing are provided with sliding grooves. The filter plate is disposed inside the housing and moves along the groove direction. The housing is provided with a pushing assembly for pushing the filter plate to move up and down.

[0009] As a further embodiment of this utility model, the pushing component includes a connecting block, which is fixedly connected to the inner wall of one side of the housing below the filter plate. A connecting rod is rotatably connected to one side of the connecting block via a waterproof bearing. Two arc-shaped plates are fixedly connected to the outer side of the connecting rod, and the arc surfaces of the two arc-shaped plates have opposite convex directions. One end of the connecting rod passes through the housing. A sprocket one is keyed to the outer side of the connecting rod at a position outside the housing. A sprocket two is keyed to the outer side of the threaded rod at a position outside the aeration box. The sprocket one is connected to the sprocket two via a synchronous belt.

[0010] As a further embodiment of this utility model, an L-shaped plate is fixedly connected to one side of the outer wall of the housing, and the connecting rod is rotatably connected to the L-shaped plate through a bearing.

[0011] As a further embodiment of this utility model, the driving assembly includes two guide seats, both of which are fixedly connected to the top outer wall of the aeration box. Each of the two guide seats has an open guide groove on one side facing each other. A slide rod is slidably connected in the guide groove. A rack that meshes with a gear is fixedly connected to one side of the slide rod. A moving rod is fixedly connected to one end of each rack. An isosceles trapezoidal block is fixedly connected to one side of the moving rod. A rotating rod is fixedly connected to the outer side of the threaded rod at a position outside the aeration box. Both sides of the rotating rod have inclined surfaces that cooperate with the isosceles trapezoidal block. An elastic component is provided in the guide groove to automatically reset the slide rod after it moves.

[0012] As a further embodiment of this utility model, the elastic component includes a telescopic rod, which is disposed in a guide groove. The two ends of the telescopic rod are respectively fixed to a guide seat and a slide rod. A compression spring is sleeved on the outside of the telescopic rod, and the two ends of the compression spring are respectively fixed to the guide seat and the slide rod.

[0013] As a further embodiment of this utility model, two corrugated sleeves are fitted on the outer side of the threaded rod, and the two ends of the corrugated sleeves are fixed to the connecting frame and the aeration box, respectively.

[0014] As a further embodiment of this utility model, a water outlet pipe is provided on one side of the aeration box at the bottom position, and a valve is provided on the outside of the water outlet pipe.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. In this utility model, the combined use of the annular pipe, frame, and stirring rack allows the frame and stirring rack to agitate the sewage in the aeration tank. At the same time, the threaded rod drives the annular pipe to reciprocate, which in turn agitates the sewage in the aeration tank and changes the aeration position, thereby enabling the gas and sewage to fully and quickly come into contact and mix, improving the mixing efficiency of sewage and oxygen in the air, and thus improving the aeration effect.

[0017] 2. In this utility model, by setting up a filter component, when sewage is added into the aeration box, the filter component will filter the impurities in the sewage, reduce the impurities in the sewage, and improve the performance of the aeration device.

[0018] 3. In this utility model, by setting up the pushing component, the pushing component can push the filter plate to move up and down reciprocally, thereby causing the filter plate to vibrate and filter the sewage, avoiding impurities from clogging the filter holes and improving the use effect of the filter plate. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an aeration device for urban sewage treatment proposed in this utility model;

[0020] Figure 2 This is a partial cross-sectional view of the aeration box of an aeration device for urban sewage treatment proposed in this utility model.

[0021] Figure 3 This is a partial cross-sectional view of the shell structure of an aeration device for urban sewage treatment proposed in this utility model;

[0022] Figure 4 This is an enlarged cross-sectional view of the guide seat of an aeration device for urban sewage treatment proposed in this utility model.

[0023] In the diagram: 1. Aeration box; 2. Aeration pump; 3. Shell; 4. Slide groove; 5. Filter plate; 6. L-shaped plate; 7. Sprocket 1; 8. Isosceles trapezoidal block; 9. Rotating rod; 10. Motor; 11. Sprocket 2; 12. Moving rod; 13. Guide seat; 14. Gear; 15. Rack; 16. Spring hose; 17. Corrugated sleeve; 18. Threaded rod; 19. Outlet pipe; 20. Annular pipe; 21. Aeration hole; 22. Connecting frame; 23. Mixing frame; 24. Rotating shaft; 25. Frame; 26. Connecting shaft; 27. Connecting rod; 28. Arc plate; 29. ​​Connecting block; 30. Guide groove; 31. Slide rod; 32. Compression spring; 33. Telescopic rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. The described embodiments are only some embodiments of the present utility model, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are all within the protection scope of the present utility model.

[0025] Reference Figures 1-4An aeration device for urban sewage treatment includes an aeration box 1. A shell 3, communicating with the interior of the aeration box 1, is welded to the top of the aeration box 1. A threaded rod 18 is rotatably connected to one side of the inner wall of the aeration box 1 via a waterproof bearing. A connecting frame 22 is threadedly connected to the outer side of the threaded rod 18. An annular pipe 20 is welded to the outer side of the connecting frame 22. Multiple aeration holes 21 are provided on both sides of the annular pipe 20. A fixing rod passing through the connecting frame 22 is welded inside the aeration box 1. A support base is welded to one side of the outer wall of the aeration box 1. An aeration pump 2, model HC-50S, is bolted to the top of the support base. A spring hose 16 is connected to one end of the air outlet of the aeration pump 2 via a flange. One end of the spring hose 16 passes through the aeration box 1 and communicates with the annular pipe 20. The spring hose 16 is elastic and can extend and retract, thus allowing continued air delivery even when the annular pipe 20 changes position. A support plate is welded to the outer wall on the other side. The top of the support plate is fixed with a motor 10 by bolts. The threaded rod 18 passes through the aeration box 1 and is fixed to the output shaft of the motor 10 by a coupling. The motor 10 can achieve forward and reverse rotation by changing the phase sequence or polarity of the power supply. When it is necessary to aerate the sewage in the aeration box 1, the aeration pump 2 delivers air to the annular pipe 20 through the spring hose 16 and discharges it into the sewage in the aeration box 1 through the aeration hole 21. At the same time, the motor 10 is started to rotate forward and reverse. The motor 10 will drive the threaded rod 18 to rotate forward and reverse. The threaded rod 18 will drive the connecting frame 22 to move back and forth along the fixed rod. The connecting frame 22 will drive the annular pipe 20 to move back and forth, so that the annular pipe 20 agitates the sewage. At the same time, the position of the annular pipe 20 is changed so that the air discharged from the aeration hole 21 can fully and quickly contact and mix with the sewage. During the aeration process, the air can be discharged through the shell 3.

[0026] In this invention, the bottom inner wall of the aeration box 1 is rotatably connected to multiple connecting shafts 26 on both sides of the annular pipe 20 via waterproof bearings. Multiple frames 25 are welded to the outside of the multiple connecting shafts 26. Rotating shafts 24 are rotatably connected to the inside of the multiple frames 25 via waterproof bearings. Multiple stirring racks 23 are welded to the outside of the rotating shafts 24. Gears 14 are keyed through the top of the multiple connecting shafts 26. The top of the aeration box 1 is provided with a drive assembly for reciprocating rotation of the connecting shafts 26. During the aeration process, the drive assembly drives the connecting shafts 26 to reciprocate, which in turn drives the frames 25 to rotate. During the rotation of the frames 25, the stirring racks 23 rotate on their own via the rotating shafts 24 under the action of the water flow. This causes the frames 25 and the stirring racks 23 to agitate the sewage, improving the mixing efficiency of sewage with oxygen in the air, thereby improving the aeration effect.

[0027] Specifically, the drive assembly includes two guide seats 13, both of which are bolted to the top outer wall of the aeration box 1. Each guide seat 13 has an open guide groove 30 on its opposite side. A slide rod 31 is slidably connected within the guide groove 30. A rack 15 meshing with a gear 14 is welded to one side of the slide rod 31. A moving rod 12 is welded to one end of each rack 15. An isosceles trapezoidal block 8 is welded to one side of the moving rod 12. A rotating rod 9 is welded to the outer side of the threaded rod 18, located outside the aeration box 1. Both sides of the rotating rod 9 have inclined surfaces that engage with the isosceles trapezoidal block 8. When the threaded rod 18 rotates, it drives the rotating rod 9 to rotate. During rotation, rod 9 will push isosceles trapezoid 8 to move through its inclined surface and the cooperation of isosceles trapezoid 8. Isosceles trapezoid 8 will push two racks 15 to move through moving rod 12. The two racks 15 will move along guide groove 30 through slide rod 31. At the same time, the racks 15 will mesh with gear 14, which will drive connecting shaft 26 to rotate. Connecting shaft 26 will drive frame 25 to rotate. During the rotation of frame 25, under the action of water flow, stirring rack 23 will rotate through rotating shaft 24. The inclined surfaces on both sides of rotating rod 9 can push isosceles trapezoid 8 to move when rotating rod 9 in both directions.

[0028] The guide groove 30 is equipped with an elastic component that automatically resets the slide rod 31 after it moves. The elastic component includes a telescopic rod 33, which is set in the guide groove 30. The two ends of the telescopic rod 33 are fixed to the guide seat 13 and the slide rod 31, respectively. A compression spring 32 is sleeved on the outside of the telescopic rod 33, and the two ends of the compression spring 32 are fixed to the guide seat 13 and the slide rod 31, respectively. During the movement of the rack 15, the compression spring 32 and the telescopic rod 33 will retract. When the rotating rod 9 rotates to the point where it disengages from the isosceles trapezoidal block 8, the rack 15 will reset under the force of the compression spring 32, thereby causing the connecting shaft 26 to reset and rotate.

[0029] It should be noted that the housing 3 is equipped with a filter assembly for filtering sewage. The filter assembly includes a filter plate 5. Slide grooves 4 are provided on both inner walls of the housing 3. The filter plate 5 is disposed within the housing 3 and moves along the grooves 4. The housing 3 is equipped with a pushing assembly for moving the filter plate 5 up and down. The pushing assembly includes a connecting block 29, which is welded to one inner wall of the housing 3 below the filter plate 5. A connecting rod 27 is rotatably connected to one side of the connecting block 29 via a waterproof bearing. Two arc-shaped plates 28 are welded to the outer side of the connecting rod 27, with the arc surfaces of the two arc-shaped plates 28 having opposite convex directions. One end of the connecting rod 27 passes through the housing 3. A sprocket 7 is keyed to the outer side of the connecting rod 27 outside the housing 3. The outer side of the threaded rod 18 is located at the aeration box 1. The outer position key is connected to sprocket 21. Sprocket 17 is connected to sprocket 21 via a synchronous belt. An L-shaped plate 6 is fixed to one side of the outer wall of the housing 3 by bolts. The connecting rod 27 is rotatably connected to the L-shaped plate 6 via a bearing. When the threaded rod 18 rotates, it will drive sprocket 21 to rotate. Sprocket 21 will drive sprocket 17 to rotate via the synchronous belt. Sprocket 17 will drive the connecting rod 27 to rotate. The connecting rod 27 will drive the arc plate 28 to rotate. During the rotation, the arc plate 28 will push the filter plate 5 to move upward along the slide groove 4. When the arc plate 28 rotates to the point of disengaging from the filter plate 5, the filter plate 5 will move downward under the action of gravity. This cycle is repeated, so that the filter plate 5 vibrates and filters the sewage, preventing impurities from clogging the filter holes and improving the use effect of the filter plate 5.

[0030] Since the housing 3 is open, it is convenient for staff to clean the impurities on the filter plate 5 inside the housing 3;

[0031] Two corrugated sleeves 17 are fitted on the outer side of the threaded rod 18, and the two ends of the corrugated sleeves 17 are fixed to the connecting frame 22 and the aeration box 1 respectively. The corrugated sleeves 17 can be contracted, so that the corrugated sleeves 17 can protect the threaded rod 18 and prevent the threaded rod 18 from contacting water. A water outlet pipe 19 is provided on one side of the aeration box 1 at the bottom position, and a valve is provided on the outer side of the water outlet pipe 19.

[0032] Working principle: When in use, wastewater is added into the housing 3. At this time, the filter plate 5 inside the housing 3 will filter the impurities in the wastewater. The filtered wastewater will enter the aeration box 1. At the same time, the motor 10 is started to rotate in both directions. The motor 10 will drive the threaded rod 18 to rotate in both directions. The threaded rod 18 will drive the second sprocket 11 to rotate. The second sprocket 11 will drive the first sprocket 7 to rotate through the synchronous belt. The first sprocket 7 will drive the connecting rod 27 to rotate. The connecting rod 27 will drive the arc plate 28 to rotate. During the rotation, the arc plate 28 will push the filter plate 5 to move upward along the slide groove 4. When the arc plate 28 rotates to the point of disengaging from the filter plate 5, the filter plate 5 will move downward under the action of gravity. This cycle is repeated, so that the filter plate 5 vibrates and filters the wastewater, preventing impurities from clogging the filter holes and improving the use effect of the filter plate 5.

[0033] When aeration is required, the aeration pump 2 delivers air to the annular pipe 20 through the spring hose 16 and discharges it into the sewage in the aeration box 1 through the aeration holes 21. Simultaneously, the rotation of the threaded rod 18 causes the connecting frame 22 to reciprocate along the fixed rod, which in turn causes the annular pipe 20 to reciprocate, agitating the sewage and changing its position. This ensures that the air discharged from the aeration holes 21 mixes thoroughly and quickly with the sewage. While the threaded rod 18 rotates, it also drives the rotating rod 9 to rotate. During rotation, the rotating rod 9, through its inclined plane and the cooperation of the isosceles trapezoidal block 8, pushes the isosceles trapezoidal block 8 to move. The isosceles trapezoidal block 8 then pushes two racks 15 to move via the moving rod 12. The rack 15 moves along the guide groove 30 via the slide bar 31. Simultaneously, the rack 15 meshes with the gear 14, causing the gear 14 to drive the connecting shaft 26 to rotate. The connecting shaft 26 then drives the frame 25 to rotate. During the rotation of the frame 25, the stirring frame 23 rotates via the rotating shaft 24 under the action of the water flow. As the rack 15 moves, the compression spring 32 and the telescopic rod 33 retract. When the rotating rod 9 rotates to the point where it disengages from the isosceles trapezoidal block 8, the rack 15 resets under the force of the compression spring 32, causing the connecting shaft 26 to reset and rotate. This reciprocating rotation of the connecting shaft 26 is repeated, thus causing the frame 25 and the stirring frame 23 to agitate the sewage, improving the mixing efficiency of sewage and oxygen in the air, thereby improving the aeration effect.

[0034] Furthermore, the terms "installation," "setup," "connection," and "socketing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral constructions; they can refer to mechanical or electrical connections; they can refer to direct connections or indirect connections via an intermediate medium, or internal connections between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

Claims

1. An aeration device for urban sewage treatment, comprising an aeration box (1), characterized in that, The top of the aeration box (1) is fixedly connected to a shell (3), and a filter assembly is provided inside the shell (3). A threaded rod (18) is rotatably connected to one side of the inner wall of the aeration box (1). A connecting frame (22) is threadedly connected to the outer side of the threaded rod (18). An annular pipe (20) is fixedly connected to the outer side of the connecting frame (22). Multiple aeration holes (21) are opened on both sides of the annular pipe (20). A fixing rod passing through the connecting frame (22) is fixedly connected inside the aeration box (1). An aeration pump (2) is fixedly connected to one side of the outer wall of the aeration box (1). A spring hose (16) is connected to one end of the air outlet of the aeration pump (2) through a flange. One end of the spring hose (16) passes through the aeration box (1) and is connected to the annular pipe (20). A motor (10) is fixedly connected to the other side of the outer wall of the aeration box (1), and the threaded rod (18) passes through the aeration box (1) and is fixed to the output shaft of the motor (10). The bottom inner wall of the aeration box (1) is rotatably connected to multiple connecting shafts (26), and multiple frames (25) are fixedly connected to the outside of the multiple connecting shafts (26). Rotating shafts (24) are rotatably connected inside the multiple frames (25), and multiple stirring racks (23) are fixedly connected to the outside of the rotating shafts (24). The top of the multiple connecting shafts (26) is keyed through the aeration box (1) and connected to gears (14). The top of the aeration box (1) is provided with a drive assembly.

2. An aeration device for urban sewage treatment according to claim 1, characterized in that, The filter assembly includes a filter plate (5), and the inner walls on both sides of the housing (3) are provided with sliding grooves (4). The filter plate (5) is disposed in the housing (3) and moves along the groove direction of the sliding groove (4). The housing (3) is provided with a pushing assembly.

3. An aeration device for urban sewage treatment according to claim 2, characterized in that, The driving assembly includes a connecting block (29), which is fixedly connected to the inner wall of one side of the housing (3) below the filter plate (5). A connecting rod (27) is rotatably connected to one side of the connecting block (29) via a waterproof bearing. Two arc-shaped plates (28) are fixedly connected to the outer side of the connecting rod (27). One end of the connecting rod (27) passes through the housing (3). A sprocket (7) is keyed to the outer side of the connecting rod (27) outside the housing (3). A sprocket (11) is keyed to the outer side of the threaded rod (18) outside the aeration box (1). The sprocket (7) is connected to the sprocket (11) via a synchronous belt.

4. An aeration device for urban sewage treatment according to claim 3, characterized in that, An L-shaped plate (6) is fixedly connected to one side of the outer wall of the housing (3), and the connecting rod (27) is rotatably connected to the L-shaped plate (6) through a bearing.

5. An aeration device for urban sewage treatment according to claim 1, characterized in that, The drive assembly includes two guide seats (13), both of which are fixedly connected to the top outer wall of the aeration box (1). Each of the two guide seats (13) has an open guide groove (30) on one side opposite to the other. A slide rod (31) is slidably connected in the guide groove (30). A rack (15) that meshes with a gear (14) is fixedly connected to one side of the slide rod (31). A moving rod (12) is fixedly connected to one end of each rack (15). An isosceles trapezoidal block (8) is fixedly connected to one side of the moving rod (12). A rotating rod (9) is fixedly connected to the outside of the threaded rod (18) at a position outside the aeration box (1). An inclined surface that cooperates with the isosceles trapezoidal block (8) is opened on both sides of the rotating rod (9). An elastic component is provided in the guide groove (30) to automatically reset the slide rod (31) after it moves.

6. An aeration device for urban sewage treatment according to claim 5, characterized in that, The elastic component includes a telescopic rod (33), which is disposed in a guide groove (30). The two ends of the telescopic rod (33) are fixed to the guide seat (13) and the slide rod (31) respectively. A compression spring (32) is sleeved on the outside of the telescopic rod (33), and the two ends of the compression spring (32) are fixed to the guide seat (13) and the slide rod (31) respectively.

7. An aeration device for urban sewage treatment according to claim 1, characterized in that, Two corrugated sleeves (17) are fitted on the outer side of the threaded rod (18), and the two ends of the corrugated sleeves (17) are fixed to the connecting frame (22) and the aeration box (1) respectively.

8. An aeration device for urban sewage treatment according to claim 1, characterized in that, A water outlet pipe (19) is provided on one side of the aeration box (1) at the bottom position, and a valve is provided on the outside of the water outlet pipe (19).

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