An aeration device for an oxidation ditch of a sewage treatment plant

Abstract

The utility model discloses an oxidation ditch aeration device of sewage treatment plant, including oxidation ditch and rotary disc aerator, and rotary disc aerator is by first motor, pivot and a plurality of rotary disc is composed, and first motor sets up on the side wall top of oxidation ditch, and the output shaft of pivot is connected with first motor through the coupling, and the outer wall on pivot is provided with two clamping grooves, and two clamping grooves are mutually symmetrical and all are the axial arrangement of pivot, and the rotary disc is by two half circle rotary disc through bolt and nut and is composed, and the inboard of two half circle rotary disc all is provided with lug, and two lugs are respectively slidingly connected in corresponding clamping groove, and the both sides on oxidation ditch are provided with same support, and the utility model discloses the cooperation between two half circle rotary disc, bolt and nut, has realized the rotary disc assembly of a complete, thereby has facilitated the disassembly and installation of rotary disc, and through the cooperation between clamping groove and lug, guarantees rotary disc installation, and first motor can smoothly drive pivot rotation, realizes the rotary effect of rotary disc.

Description

Technical Field

[0001] This utility model relates to the field of aeration device technology, and in particular to an aeration device for oxidation ditch in a sewage treatment plant. Background Technology

[0002] The working principle of the rotary disc aerator is that when the rotary disc installed on the horizontal shaft is driven to rotate by the motor, the part of the disc immersed in water carries the sewage up, so that the sewage comes into contact with the air and brings the air into the sewage for aeration, ensuring that the reaction in the oxidation ditch can proceed smoothly.

[0003] Utility model CN218202405U relates to the field of wastewater treatment technology, and in particular to a rotating disc bottom-level compensation aeration device. It is installed in an oxidation ditch, and a first arc-shaped groove and a slope are sequentially arranged on a portion of the bottom surface of the oxidation ditch along the direction of wastewater flow. The first arc-shaped groove is located at the lower part of the bottom surface of the oxidation ditch, and the slope gradually rises along the direction of wastewater flow. An impeller mechanism is provided within the first arc-shaped groove. The impeller mechanism includes a first rotating shaft, the two ends of which are rotatably connected to the inner wall of the oxidation ditch. Several impellers are evenly distributed on the first rotating shaft. A rotating disc aeration mechanism is located above the highest point of the slope. A transmission mechanism is provided between the rotating disc aeration mechanism and the impeller mechanism, and the rotating disc aeration mechanism drives the impeller mechanism to rotate through the transmission mechanism. This technical solution is used to solve the problem of poor deep aeration effect of the existing rotating disc aeration structure in oxidation ditches.

[0004] Existing rotary disc aeration devices for oxidation ditches are inconvenient to dismantle, and the width of the oxidation ditch limits the maintenance of the discs. Therefore, a new oxidation ditch aeration device for wastewater treatment plants is needed to meet these needs. Utility Model Content

[0005] The purpose of this invention is to provide an aeration device for oxidation ditches in wastewater treatment plants to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oxidation ditch aeration device for a sewage treatment plant, comprising an oxidation ditch and a rotary disc aerator. The rotary disc aerator consists of a first motor, a rotating shaft, and several rotating discs. The first motor is mounted on the top of one side wall of the oxidation ditch. The rotating shaft is connected to the output shaft of the first motor via a coupling. Two slots are provided on the outer wall of the rotating shaft, symmetrically arranged axially along the shaft. Each rotating disc consists of two semi-circular discs connected by bolts and nuts. Protrusions are provided on the inner sides of each semi-circular disc, and the two protrusions are slidably engaged in their respective slots. A single support is mounted on both side walls of the oxidation ditch, and a second motor is mounted on the support. A lead screw is connected to the output end of the second motor via a coupling, and a first moving rod is driven onto the lead screw. Several second moving rods are slidably connected to the support, and the second moving rods are movably connected to the first moving rods via a linkage assembly. The bottom ends of the second moving rods and the first moving rods are respectively engaged above several rotating discs.

[0007] Preferably, an extension rod is provided on the end face of each of the two semicircular discs, and the connection between the bolt and the nut is arranged on the extension rod.

[0008] Preferably, the first moving rod has a threaded hole, and the lead screw is connected to the threaded hole. Several second moving rods each have through holes, and the lead screw is arranged in the through holes of the several second moving rods. The diameter of the through hole is larger than the outer diameter of the lead screw.

[0009] Preferably, the bracket is provided with a guide groove, which is arranged parallel to the lead screw, and the first moving rod and several second moving rods are slidably adapted in the guide groove.

[0010] Preferably, the linkage assembly consists of a fixed rod, a first connecting rod, several second connecting rods, and a third connecting rod. The fixed rod is L-shaped and connected to one end of the bracket. One end of the first connecting rod is rotatably connected to the fixed rod. The middle ends of several second connecting rods are rotatably connected to corresponding second moving rods. The ends of two adjacent second connecting rods are rotatably connected in a cross shape. One end of the second connecting rod closer to the first connecting rod is rotatably connected to the first connecting rod. One end of the second connecting rod closer to the third connecting rod is rotatably connected to the third connecting rod. The third connecting rod is rotatably connected to the first moving rod.

[0011] Preferably, the bottom ends of the first moving rod and the plurality of second moving rods are provided with slots, the width of which is greater than the thickness of the turntable.

[0012] The beneficial effects of this utility model are:

[0013] In this invention, a complete rotating disc assembly is achieved through the cooperation between two semi-circular rotating discs, bolts, and nuts, which facilitates the disassembly and installation of the rotating disc. Furthermore, through the cooperation between the slots and protrusions, it is ensured that after the rotating disc is installed, the first motor can smoothly drive the rotating shaft to rotate, thereby achieving the rotating effect of the rotating disc.

[0014] In this invention, a second motor drives a lead screw to rotate, causing a first moving rod connected to the lead screw to move. Through a linkage component, several second moving rods move in tandem. The first moving rod and the several second moving rods gradually move towards the second motor and merge, causing several rotating discs to move in tandem with the first and second moving rods. The cooperation between the slot and the protrusion ensures the movement of the rotating discs, allowing several rotating discs to stack at the second motor. This facilitates the disassembly and maintenance of the rotating discs and effectively solves the width limitation of the oxidation ditch. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an oxidation ditch aeration device for a sewage treatment plant proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the rotating disc aerator structure of an oxidation ditch aeration device for a sewage treatment plant proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the exploded structure of a rotating disc in an oxidation ditch aeration device for a wastewater treatment plant, as proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the support structure of the aeration device for the oxidation ditch in a sewage treatment plant proposed in this utility model.

[0019] Figure 5 This is a front cross-sectional structural diagram of an oxidation ditch aeration device for a sewage treatment plant proposed in this utility model.

[0020] In the diagram: 1. Oxidation ditch; 2. Rotary disc aerator; 3. First motor; 4. Rotating shaft; 5. Rotary disc; 6. Slot; 7. Semi-circular rotating disc; 8. Bolt; 9. Nut; 10. Protrusion; 11. Bracket; 12. Second motor; 13. Lead screw; 14. First moving rod; 15. Second moving rod; 16. Linkage assembly; 17. Extension rod; 18. Threaded hole; 19. Through hole; 20. Guide groove; 21. Fixing rod; 22. First connecting rod; 23. Second connecting rod; 24. Third connecting rod; 25. Groove. Detailed Implementation

[0021] 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5 An oxidation ditch aeration device for a wastewater treatment plant includes an oxidation ditch 1 and a rotary disc aerator 2. The rotary disc aerator 2 consists of a first motor 3, a rotating shaft 4, and several rotating discs 5. The first motor 3 is located on the top of one side wall of the oxidation ditch 1. The rotating shaft 4 is connected to the output shaft of the first motor 3 via a coupling. Two slots 6 are formed on the outer wall of the rotating shaft 4, and the two slots 6 are symmetrically arranged axially around the rotating shaft 4. Each rotating disc 5 consists of two semi-circular rotating discs 7 connected by bolts 8 and nuts 9. Each of the two semi-circular rotating discs 7 has a protrusion 10 on its inner side. Each component is slidably engaged in its corresponding slot 6. The same bracket 11 is provided on both sides of the oxidation ditch 1. A second motor 12 is provided on the bracket 11. A lead screw 13 is connected to the output end of the second motor 12 through a coupling. A first moving rod 14 is driven and connected to the lead screw 13. Several second moving rods 15 are slidably connected to the bracket 11. Several second moving rods 15 and the first moving rod 14 are movably connected through a linkage component 16. The bottom ends of several second moving rods 15 and the first moving rod 14 are respectively engaged above several rotating discs 5.

[0023] The second motor 12 drives the lead screw 13 to rotate, causing the first moving rod 14, which is connected to the lead screw 13, to move. Through the linkage component 16, several second moving rods 15 move in tandem. The first moving rod 14 and several second moving rods 15 gradually move towards the second motor 12 and merge, causing several rotating discs 5 to move along with the first moving rod 14 and the second moving rod 15. The cooperation between the slot 6 and the protrusion 10 ensures the movement of the rotating discs 5, allowing several rotating discs 5 to stack at the second motor 12, facilitating the disassembly and maintenance of the rotating discs 5 and effectively solving the width limitation of the oxidation ditch 1. Through the cooperation between the two semi-circular rotating discs 7, the bolt 8, and the nut 9, a complete rotating disc 5 is assembled, facilitating the disassembly and installation of the rotating discs 5. Furthermore, through the cooperation between the slot 6 and the protrusion 10, it is ensured that after the rotating disc 5 is installed, the first motor 3 can smoothly drive the rotating shaft 4 to rotate, achieving the rotation effect of the rotating disc 5.

[0024] Specifically, in this embodiment, extension rods 17 are provided on the end faces of the two semi-circular rotating discs 7, and the connection between the bolts 8 and nuts 9 is arranged on the extension rods 17, providing sufficient installation space for the bolts 8 and nuts 9.

[0025] Specifically, in this embodiment, the first moving rod 14 is provided with a threaded hole 18, and the lead screw 13 is driven and connected in the threaded hole 18. Several second moving rods 15 are provided with through holes 19, and the lead screw 13 is arranged in the through holes 19 of the several second moving rods 15. The diameter of the through hole 19 is larger than the outer diameter of the lead screw 13, ensuring that the lead screw 13 and the first moving rod 14 produce a transmission effect, and preventing the lead screw 13 from transmitting to the several second moving rods 15. Thus, the first moving rod 14 drives the several second moving rods 15 to produce a sequential synchronous linkage effect through the cooperation of the linkage component 16.

[0026] Specifically, in this embodiment, the bracket 11 is provided with a guide groove 20, which is arranged parallel to the lead screw 13. The first moving rod 14 and several second moving rods 15 are slidably adapted in the guide groove 20 to ensure the stability of the first moving rod 14 and several second moving rods 15 when they move.

[0027] Specifically, in this embodiment, the linkage component 16 consists of a fixed rod 21, a first connecting rod 22, several second connecting rods 23, and a third connecting rod 24. The fixed rod 21 is L-shaped and connected to one end of the bracket 11. One end of the first connecting rod 22 is rotatably connected to the fixed rod 21. The middle ends of several second connecting rods 23 are rotatably connected to the corresponding second moving rods 15. The ends of two adjacent second connecting rods 23 are rotatably connected in a cross shape. One end of the second connecting rod 23 closer to the first connecting rod 22 is rotatably connected to the first connecting rod 22. One end of the second connecting rod 23 closer to the third connecting rod 24 is rotatably connected to the third connecting rod 24. The third connecting rod 24 is rotatably connected to the first moving rod 14.

[0028] When the first moving rod 14 moves, the third link 24 first generates a rotational effect. Through its connection with the second link 23, the second link 23 rotates, thereby causing the second moving rod 15 connected to the second link 23 to move. This pushes inward, realizing the subsequent rotation of the second link 23 and the movement of the second moving rod 15, thus ensuring that each rotating disc 5 maintains a sufficiently equal distance.

[0029] Specifically, in this embodiment, the bottom ends of the first moving rod 14 and several second moving rods 15 are provided with slots 25. The width of the slots 25 is greater than the thickness of the turntable 5, providing sufficient space for the rotation of the turntable 5, and enabling the first moving rod 14 and the second moving rod 15 to push the turntable 5 to move when they move.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An oxidation ditch aeration device for a wastewater treatment plant, comprising an oxidation ditch (1) and a rotary disc aerator (2), characterized in that: The rotating disc aerator (2) consists of a first motor (3), a rotating shaft (4), and several rotating discs (5). The first motor (3) is located on the top of one side wall of the oxidation ditch (1). The rotating shaft (4) is connected to the output shaft of the first motor (3) via a coupling. Two slots (6) are provided on the outer wall of the rotating shaft (4). The two slots (6) are symmetrical to each other and are arranged axially along the rotating shaft (4). The rotating discs (5) consist of two semi-circular rotating discs (7) connected by bolts (8) and nuts (9). The inner sides of the two semi-circular rotating discs (7) are provided with protrusions (10). The two protrusions (10) are slidably engaged in the corresponding slots. (6) Inside, the same support (11) is provided on both sides of the oxidation ditch (1). A second motor (12) is provided on the support (11). A lead screw (13) is connected to the output end of the second motor (12) through a coupling. A first moving rod (14) is connected to the lead screw (13) through a transmission. Several second moving rods (15) are slidably connected to the support (11). Several second moving rods (15) and the first moving rod (14) are movably connected through a linkage component (16). The bottom ends of several second moving rods (15) and the first moving rod (14) are respectively locked above several rotating discs (5).

2. The aeration device for an oxidation ditch in a wastewater treatment plant according to claim 1, characterized in that: An extension rod (17) is provided on the end face of each of the two semicircular discs (7), and the connection between the bolt (8) and the nut (9) is arranged on the extension rod (17).

3. The aeration device for an oxidation ditch in a wastewater treatment plant according to claim 1, characterized in that: The first moving rod (14) has a threaded hole (18), and the lead screw (13) is connected in the threaded hole (18). Several second moving rods (15) each have a through hole (19), and the lead screw (13) is arranged in the through hole (19) of several second moving rods (15). The diameter of the through hole (19) is larger than the outer diameter of the lead screw (13).

4. The aeration device for an oxidation ditch in a wastewater treatment plant according to claim 1, characterized in that: The bracket (11) is provided with a guide groove (20), which is arranged parallel to the lead screw (13). The first moving rod (14) and several second moving rods (15) are all slidably adapted in the guide groove (20).

5. The aeration device for an oxidation ditch in a wastewater treatment plant according to claim 1, characterized in that: The linkage assembly (16) consists of a fixed rod (21), a first connecting rod (22), several second connecting rods (23) and a third connecting rod (24). The fixed rod (21) is L-shaped and connected to one end of the bracket (11). One end of the first connecting rod (22) is rotatably connected to the fixed rod (21). The middle ends of several second connecting rods (23) are rotatably connected to the corresponding second moving rods (15). The ends of two adjacent second connecting rods (23) are rotatably connected in a cross shape. One end of the second connecting rod (23) closer to the first connecting rod (22) is rotatably connected to the first connecting rod (22). One end of the second connecting rod (23) closer to the third connecting rod (24) is rotatably connected to the third connecting rod (24). The third connecting rod (24) is rotatably connected to the first moving rod (14).

6. The aeration device for an oxidation ditch in a wastewater treatment plant according to claim 1, characterized in that: The bottom ends of the first moving rod (14) and several second moving rods (15) are provided with slots (25), and the width of the slots (25) is greater than the thickness of the turntable (5).

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