Circulating aeration device for chemical sewage treatment

Abstract

The utility model is applicable to the technical field of sewage treatment, and provides a circulating aeration device for chemical sewage treatment, which comprises an aeration tank, a top cover and a circulating slurry pump, the top cover is mounted at the top of the aeration tank, the upper surface of the top cover is rotatably connected with a main shaft, and the lower end of the main shaft rotatably penetrates out of the lower surface of the top cover; the main shaft is provided with a through hole extending out of the lower surface of the main shaft, the main shaft is provided with a rotating shaft, and the lower end of the rotating shaft extends into the aeration tank through the through hole and slides in the through hole. The aeration pipe can extend into the sewage for aeration, the use effect of the aeration device is further guaranteed, meanwhile, the stirring plate is additionally arranged on the surface of the aeration pipe, the stirring plate can stir the sewage at the top, the effect of stirring the sewage at the top is achieved, and the aeration effect on the sewage at the top can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, and more specifically, to a circulating aeration device for chemical sewage treatment. Background Art

[0002] In the activated sludge process of wastewater, the dissolved oxygen in the mixed liquor must be replenished by aeration, and for this purpose, an aeration device is required in the sewage treatment process;

[0003] For example, the existing patent: CN214299469U discloses an air recycling MCR aeration device, which aerates the inside and top of the sewage and simultaneously rotates the upper aeration plate to allow air to fully contact the sewage and accelerate the aeration efficiency;

[0004] However, during the experiment, it was found that the prior art had the following problems: the upper aeration plate in the prior art is connected to the rotating rod, and the position of the rotating rod is fixed and cannot be moved, which results in the position of the upper aeration plate being also fixed. However, in actual sewage treatment, the amount of sewage in the aeration tank is difficult to unify, which results in the sewage water level in the aeration tank being more or less higher or lower. Since the position of the upper aeration plate is fixed, when the water level is low, the upper aeration plate cannot be extended into the sewage, which does not have an aerating effect on the sewage. When the water level is high, the upper aeration plate is extended too deep, and the aeration effect on the sewage surface is not obvious enough. In this regard, the applicant believes that the prior art has certain disadvantages. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model aims to provide a circulating aeration device for chemical wastewater treatment, in which an aeration pipe can be extended into the wastewater for aeration when the wastewater in the aeration tank increases or decreases.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A circulating aeration device for chemical wastewater treatment comprises an aeration tank, a top cover and a circulating mud pump. The top cover is installed on the top of the aeration tank. The upper surface of the top cover is rotatably connected with a main shaft. The lower end of the main shaft rotates through the lower surface of the top cover. The main shaft is provided with a through hole extending from its lower surface. The main shaft is provided with a rotating shaft. The lower end of the rotating shaft extends into the aeration tank through the through hole and slides in the through hole. The outer surface of the rotating shaft located in the aeration tank is fixedly connected with a plurality of aeration pipes. The upper surface of the top cover is provided with an annular plate. The rotating shaft is located at the center of the annular plate. Position, three supporting columns are fixedly connected between the annular plate and the top cover, two supporting slide bars which are arranged in a mirror image are rotatably connected to the outer surface of the rotating shaft, the opposite ends of the two supporting slide bars are arranged on the upper surface of the annular plate, and slide along the upper surface of the annular plate, two arc-shaped protrusions are fixedly connected to the upper surface of the annular plate, the two arc-shaped protrusions are arranged in parallel, and a limiting slide groove is opened on the inner wall of the through hole, and the limiting slide grooves extend from the upper and lower side surfaces of the main shaft respectively, and a limiting slide block is fixedly connected to the outer surface of the rotating shaft, and the limiting slide block slides in the limiting slide groove.

[0008] The utility model is further configured as follows: an air inlet pipe is fixedly installed on the outer surface of the aeration tank, one end of the air inlet pipe penetrates into the aeration tank, one end of the air inlet pipe located in the aeration tank is connected to a lower aeration plate, the other end of the air inlet pipe is connected to an aeration fan, a circulating mud pump is installed on one side of the aeration tank, the output port and input port of the circulating mud pump are fixedly connected to pipes, and the other ends of the two pipes respectively penetrate into the top and bottom of the aeration tank.

[0009] The utility model is further configured as follows: a rotary joint is fixedly connected to the upper end of the rotating shaft, an air inlet pipe is also installed on the rotating joint, the interior of the rotating shaft is hollow, one end of the air inlet pipe rotates and penetrates into the rotating shaft, and the other end of the air inlet pipe is also connected to the output port of the aeration fan.

[0010] The utility model is further configured as follows: the aeration pipe is communicated with the interior of the rotating shaft, and a plurality of aeration holes communicated with the interior of the aeration pipe are provided at the bottom of the aeration pipe.

[0011] The utility model is further configured as follows: two paddles are fixedly connected to the surfaces on two opposite sides of the aeration pipe, and the two paddles are arranged horizontally and in parallel.

[0012] The utility model is further configured as follows: a motor is fixedly mounted on the top cover, a first bevel gear is fixedly connected to the output shaft of the motor, a second bevel gear is fixedly sleeved on the outer surface of the main shaft, and the first bevel gear is meshedly connected with the second bevel gear.

[0013] The advantages of the utility model are that the aeration pipe can be synchronously displaced upward or downward during the rotation process, so that the position of the aeration pipe is no longer fixed. In this way, when the sewage in the aeration tank increases or decreases, the aeration pipe can be extended into the sewage for aeration, further ensuring the use effect of the aeration device. At the same time, a paddle is added to the surface of the aeration pipe, so that when the aeration pipe is displaced upward or downward, the paddle can paddle the sewage on the top, thereby achieving the effect of turning over the sewage on the top, and can further improve the aeration effect of the sewage on the top. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a circulating aeration device for chemical wastewater treatment according to the utility model;

[0015] Figure 2 This is a schematic diagram of the rotating shaft connection structure of the utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a schematic diagram of the bottom structure of the top cover of the utility model;

[0018] In the figure: 1. aeration tank; 2. top cover; 3. air inlet pipe; 4. circulating mud pump; 5. main shaft; 6. rotating shaft; 7. through hole; 8. rotary joint; 9. aeration pipe; 10. aeration hole; 11. supporting slide rod; 12. annular plate; 13. supporting column; 14. arc-shaped protrusion; 15. motor; 16. first bevel gear; 17. second bevel gear; 18. limiting slide groove; 19. limiting slider; 20. dial plate. DETAILED DESCRIPTION

[0019] See also Figure 1-4 , the utility model provides the following technical solutions:

[0020] Specifically, it refers to a circulating aeration device for chemical wastewater treatment, including an aeration tank 1, a top cover 2 and a circulating mud pump 4. The top cover 2 is installed on the top of the aeration tank 1, and an air inlet pipe 3 is fixedly installed on the outer surface of the aeration tank 1. One end of the air inlet pipe 3 penetrates into the aeration tank 1, and one end of the air inlet pipe 3 located in the aeration tank 1 is connected to a lower aeration plate, and the other end of the air inlet pipe 3 is connected to an aeration fan. The circulating mud pump 4 is installed on one side of the aeration tank 1, and the output port and the input port of the circulating mud pump 4 are fixedly connected with pipelines, and the other ends of the two pipelines penetrate into the top and the bottom of the aeration tank 1 respectively, so that the sewage at the bottom of the aeration tank 1 can be extracted by the circulating mud pump 4 and transported to the top of the aeration tank 1, so that it is circulated and aerated, and the aeration time is increased.

[0021] Specifically, the upper surface of the top cover 2 is rotatably connected with a main shaft 5, and the lower end of the main shaft 5 rotates and penetrates through the lower surface of the top cover 2. The main shaft 5 is provided with a through hole 7 extending from its lower surface. The main shaft 5 is provided with a rotating shaft 6, and the lower end of the rotating shaft 6 extends into the aeration tank 1 through the through hole 7 and slides in the through hole 7. The upper end of the rotating shaft 6 is fixedly connected with a rotating joint 8, and an air inlet pipe 3 is also installed on the rotating joint 8. The interior of the rotating shaft 6 is hollow, and one end of the air inlet pipe 3 rotates and penetrates into the rotating shaft 6, and the other end of the air inlet pipe 3 is also connected to the output port of the aeration fan. The outer surface of the rotating shaft 6 located in the aeration tank 1 is fixedly connected with a plurality of aeration pipes 9, and the aeration pipe 9 is connected with the interior of the rotating shaft 6. The bottom of the aeration pipe 9 is provided with a plurality of aeration holes 10 connected with the interior thereof. In this way, when the aeration fan is running, the air inlet pipe 3 can transport air into the aeration pipe 9, and finally be discharged from the aeration holes 10, so that the sewage on the top can be aerated.

[0022] Specifically, an annular plate 12 is provided on the upper surface of the top cover 2, and the rotating shaft 6 is located at the center of the annular plate 12. Three support columns 13 are fixedly connected between the annular plate 12 and the top cover 2. Two support slide bars 11 arranged in a mirror image are rotatably connected to the outer surface of the rotating shaft 6. The opposite ends of the two support slide bars 11 are arranged on the upper surface of the annular plate 12 and slide along the upper surface of the annular plate 12. In this way, the rotating shaft 6 is supported by the two support slide bars 11, which can prevent the support slide bar 11 from sliding out of the through hole 7. Two arc-shaped protrusions 14 are fixedly connected to the upper surface of the annular plate 12, and the two arc-shaped protrusions 14 are arranged in parallel. A limiting slide groove 18 is opened on the inner wall of the through hole 7, and the limiting slide groove 18 extends from the upper and lower side surfaces of the main shaft 5 respectively. A limiting slider 19 is fixedly connected to the outer surface of the rotating shaft 6. The control slide block 19 slides in the limiting slide groove 18, so that when the main shaft 5 rotates, the rotating shaft 6 can rotate synchronously with the main shaft 5 due to the limitation of the limiting slide block 19 and the limiting slide groove 18. In this way, the two supporting slide bars 11 slide on the surface of the annular plate 12. When the supporting slide bar 11 slides onto the arc-shaped protrusion 14, the supporting slide bar 11 slides along the arc surface of the arc-shaped protrusion 14 to drive the rotating shaft 6 to move upward. When the supporting slide bar 11 slides out of the arc-shaped protrusion 14, the supporting slide bar 11 loses support, causing the rotating shaft 6 to move downward. In this way, the aeration pipe 9 can be synchronously moved upward or downward during the rotation process, so that the position of the aeration pipe 9 is no longer fixed. In this way, when the sewage in the aeration tank 1 increases or decreases, the aeration pipe 9 can be extended into the sewage for aeration, which further ensures the use effect of the aeration device.

[0023] Specifically, two paddle plates 20 are fixedly connected to the opposite side surfaces of the aeration tube 9, and the two paddle plates 20 are arranged horizontally and parallelly, so that when the aeration tube 9 moves upward or downward, the paddle plates 20 can paddle the sewage on the top, thereby achieving the effect of turning over the sewage on the top, which can further improve the aeration effect of the sewage on the top.

[0024] In this embodiment, one end of the air intake pipe 3 connected to the rotary joint 8 can be set as a plastic tube, so that when the rotating shaft 6 moves upward or downward, the plastic tube will bend due to force, and will not cause the air intake pipe 3 to break due to force.

[0025] Specifically, a motor 15 is fixedly mounted on the top cover 2, a first bevel gear 16 is fixedly connected to the output shaft of the motor 15, a second bevel gear 17 is fixedly sleeved on the outer surface of the main shaft 5, and the first bevel gear 16 is meshingly connected with the second bevel gear 17. Therefore, when the motor 15 is started, the output shaft can drive the first bevel gear 16 to rotate, and at the same time, the second bevel gear 17 rotates synchronously under the meshing transmission of the first bevel gear 16, thereby driving the main shaft 5 to rotate.

[0026] In this embodiment, the motor 15 is a low-speed motor. While ensuring the aeration effect of the top sewage, it also avoids the problem that the rotating shaft 6 rotates too fast, causing the supporting slide rod 11 to shake or even break.

[0027] The working principle of the circulating aeration device for chemical wastewater treatment provided by the utility model is as follows: when the motor 15 is started, the output shaft can drive the first bevel gear 16 to rotate, and at the same time, the second bevel gear 17 rotates synchronously under the meshing transmission of the first bevel gear 16, thereby driving the main shaft 5 to rotate. Since the rotating shaft 6 is restricted by the limiting slider 19 and the limiting slide groove 18, it can rotate synchronously with the main shaft 5, so that the two supporting slide bars 11 slide on the surface of the annular plate 12. When the supporting slide bar 11 slides onto the arc-shaped protrusion 14, the supporting slide bar 11 slides along the arc surface of the arc-shaped protrusion 14 to drive the rotating shaft 6 to move upward. When the supporting slide bar 11 slides out of the arc-shaped protrusion 14, the supporting slide bar 11 loses support, causing the rotating shaft 6 to move downward, so that the aeration pipe 9 can move upward or downward synchronously during the rotation process.

Claims

1. A circulating aeration device for treating chemical wastewater, comprising an aeration tank (1), a top cover (2) and a circulating mud pump (4), wherein the top cover (2) is installed on the top of the aeration tank (1), and is characterized in that: The upper surface of the top cover (2) is rotatably connected to a main shaft (5), the lower end of the main shaft (5) rotatably penetrates through the lower surface of the top cover (2), the main shaft (5) is provided with a through hole (7) extending from its lower surface, the main shaft (5) is provided with a rotating shaft (6), the lower end of the rotating shaft (6) extends into the aeration tank (1) through the through hole (7) and slides in the through hole (7), the outer surface of the rotating shaft (6) located in the aeration tank (1) is fixedly connected to a plurality of aeration pipes (9), the upper surface of the top cover (2) is provided with an annular plate (12), the rotating shaft (6) is located at the center of the annular plate (12), and three supporting plates are fixedly connected between the annular plate (12) and the top cover (2). The column (13) is rotatably connected to the outer surface of the rotating shaft (6) with two support slide bars (11) arranged in a mirror image. The opposite ends of the two support slide bars (11) are arranged on the upper surface of the annular plate (12) and slide along the upper surface of the annular plate (12). The upper surface of the annular plate (12) is fixedly connected to two arc-shaped protrusions (14). The two arc-shaped protrusions (14) are arranged in parallel. A limiting slide groove (18) is opened on the inner wall of the through hole (7). The limiting slide groove (18) extends from the upper and lower side surfaces of the main shaft (5) respectively. The outer surface of the rotating shaft (6) is fixedly connected to a limiting slide block (19), and the limiting slide block (19) slides in the limiting slide groove (18).

2. A circulating aeration device for treating chemical wastewater according to claim 1, characterized in that: An air inlet pipe (3) is fixedly mounted on the outer surface of the aeration tank (1), one end of the air inlet pipe (3) penetrates into the aeration tank (1), one end of the air inlet pipe (3) located in the aeration tank (1) is connected to a lower aeration plate, and the other end of the air inlet pipe (3) is connected to an aeration fan. A circulating mud pump (4) is mounted on one side of the aeration tank (1), and the output port and input port of the circulating mud pump (4) are both fixedly connected to pipelines, and the other ends of the two pipelines penetrate into the top and bottom of the aeration tank (1) respectively.

3. A circulating aeration device for treating chemical wastewater according to claim 2, characterized in that: The upper end of the rotating shaft (6) is fixedly connected to a rotating joint (8), and an air inlet pipe (3) is also installed on the rotating joint (8). The interior of the rotating shaft (6) is hollow, and one end of the air inlet pipe (3) rotates and penetrates into the rotating shaft (6), and the other end of the air inlet pipe (3) is also connected to the output port of the aeration fan.

4. A circulating aeration device for treating chemical wastewater according to claim 3, characterized in that: The aeration pipe (9) is in communication with the interior of the rotating shaft (6), and a plurality of aeration holes (10) in communication with the interior of the aeration pipe (9) are provided at the bottom of the aeration pipe (9).

5. The circulating aeration device for treating chemical wastewater according to claim 1, characterized in that: Two paddles (20) are fixedly connected to the opposite side surfaces of the aeration pipe (9), and the two paddles (20) are arranged horizontally and in parallel.

6. A circulating aeration device for treating chemical wastewater according to claim 1, characterized in that: A motor (15) is fixedly mounted on the top cover (2), a first bevel gear (16) is fixedly connected to the output shaft of the motor (15), a second bevel gear (17) is fixedly sleeved on the outer surface of the main shaft (5), and the first bevel gear (16) is meshingly connected to the second bevel gear (17).

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