Reflux ratio regulator

Abstract

The utility model discloses a reflux ratio regulator, which relates to the technical field of sewage treatment and comprises a support frame, a box body is fixed at the top of the support frame, a reflux pipe and a recovery pipe are respectively mounted on the inner wall of the box body, a flow guide frame for guiding the flow of returned sludge is arranged in the box body, and the return pipe is connected with the recovery pipe. And an adjusting assembly for adjusting the flow guide angle of the flow guide frame is arranged in the box body. The sludge treatment device has the beneficial effects that sludge is guided and conveyed through the flow guide frame, the sludge is guided into the aeration tank again through the return pipe, the microbial biomass of an activated sludge system is maintained, the rotating rod drives the flow guide frame to rotate, so that the flow guide frame guides the sludge into the recycling pipe, and redundant sludge is discharged through the recycling pipe; the flow guide frame and the return pipe jointly adjust the sludge split ratio, the system operation efficiency is optimized, the flow guide frame is driven to rotate through the adjusting assembly, sludge is distributed to the return pipe or the recovery pipe, and dynamic control over the return ratio is achieved.

Description

A reflux ratio regulator Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a reflux ratio regulator. Background Technology

[0002] Wastewater treatment refers to the process of purifying wastewater generated from domestic and industrial production through physical, chemical, and biological methods to meet discharge standards or reuse requirements. Its core objective is to remove suspended solids, organic matter, pathogens, and harmful substances from wastewater to prevent pollution of natural water bodies and the ecological environment. In wastewater treatment, the reflux ratio regulator is a key device used to control the proportion of sludge recirculation or nitrification liquor recirculation, playing a crucial role in maintaining the microbial concentration within the bioreactor, improving treatment efficiency, and optimizing energy consumption.

[0003] In wastewater treatment, the return ratio regulator adjusts the return ratio (the ratio of return flow to influent flow) by controlling the flow rate of return sludge or nitrification liquid. Existing return ratio regulators typically control the amount of return by controlling the opening and closing time of solenoid valves. However, these regulators lack internal flow guiding structures, leading to a concentration gradient of sludge within the return pipe. This results in uneven activity of the return sludge, affecting biological reaction efficiency. Sludge deposits in pipe bends or dead corners, causing blockages. Furthermore, the return sludge cannot be properly mixed with the water flow, resulting in significant concentration stratification. The sludge concentration near the return inlet is too high, leading to insufficient dissolved oxygen and inhibiting the activity of aerobic microorganisms. Conversely, the sludge concentration further away from the return inlet is too low, reducing pollutant removal efficiency. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A reflux ratio regulator includes a support frame, a box fixed to the top of the support frame, a reflux pipe and a recovery pipe respectively installed on the inner wall of the box, a flow guide frame for guiding the refluxed sludge inside the box, an adjustment component for adjusting the flow guide frame angle inside the box, one end of the reflux pipe connected to a cylinder, and a mixing component inside the cylinder;

[0007] The adjustment assembly includes a connecting frame fixed to the inner wall of the box. The inner wall of the connecting frame is rotatably connected to two sets of rotating rods for driving the flow guide to rotate. One end of the rotating rod is fixed to one side of the flow guide. The inside of the box is provided with a driving component for driving the rotating rod to rotate.

[0008] The mixing assembly includes a rotating rod disposed on the inner wall of the cylinder, with multiple sets of blades mounted on the outer side of the rotating rod, and a transmission component for adjusting the stirring angle of the blades disposed inside the rotating rod.

[0009] In a preferred embodiment of the reflux ratio adjuster of this utility model, a reflux pump is installed on the top of the support frame, the discharge end of the reflux pump is connected to a connecting pipe, and one end of the connecting pipe is connected to the top of the housing.

[0010] In a preferred embodiment of the reflux ratio adjuster of this utility model, the driving component includes a housing fixed to the inner wall of the housing, a first motor is installed on the inner wall of the housing, and a gear set is provided at the output end of the first motor for driving the rotating rod to rotate.

[0011] In a preferred embodiment of the reflux ratio adjuster of this utility model, the transmission component includes a transmission rod rotatably connected to the inner wall of the rotating rod, a first bevel gear fixed to the outer side of the transmission rod, and a second bevel gear meshing with the outer side of the first bevel gear.

[0012] In a preferred embodiment of the reflux ratio adjuster of this utility model, the top of the cylinder is provided with a cylinder cover, the top of the cylinder cover is equipped with a second motor for driving the rotating rod to rotate, the output end of the second motor is fixed with a connecting column, the bottom of the connecting column is fixed with a protective shell, and the inner wall of the protective shell is fixed with a third motor for driving the transmission rod to rotate.

[0013] In a preferred embodiment of the reflux ratio adjuster of this utility model, a connecting seat is fixed to one side of the second bevel gear, and the outer side of the connecting seat is rotatably connected to the inner wall of the rotating rod. A mounting bracket is fixed to one side of the connecting seat, and a mounting block for mounting the blade is snapped into the inner wall of the mounting bracket. One side of the mounting block is fixed to one end of the blade, and a mounting bolt for fixing the mounting block is threaded into the inner wall of the mounting bracket.

[0014] As a preferred embodiment of the reflux ratio regulator of this utility model, the inner wall of the cylinder is provided with an inlet pipe and an outlet, and both the inlet pipe and the outlet are provided with solenoid valves. The bottom of the support frame is fixed with a base, and the top of the base is fixedly connected to the bottom of the cylinder.

[0015] The beneficial effects of this utility model are as follows: The sludge is guided and transported via a flow guide frame, and then reintroduced into the aeration tank through a return pipe, maintaining the microbial biomass of the activated sludge system. A rotating rod drives the flow guide frame to rotate, guiding the sludge into the recovery pipe. Excess sludge is discharged through the recovery pipe, controlling the total sludge volume and preventing sludge aging or excessive accumulation. Together with the return pipe, it adjusts the sludge distribution ratio, optimizing system operating efficiency. An adjusting component drives the flow guide frame to rotate, distributing sludge to the return pipe or recovery pipe, achieving dynamic control of the return ratio. A transmission rod rotates, driving the first and second bevel gears to rotate, adjusting the blade angle. Adjusting the angle changes the fluid's shear force, turbulence intensity, and circulation path, thereby accelerating the mixing of sludge and water. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0017] Figure 1 shows the overall structure of the reflux ratio regulator.

[0018] Figure 2 is a schematic diagram of the structure of the cylinder and the box in the reflux ratio regulator.

[0019] Figure 3 is a schematic diagram of the internal structure of the housing in the reflux ratio regulator.

[0020] Figure 4 is a schematic diagram of the structure of the cover in the reflux ratio regulator.

[0021] Figure 5 is an enlarged structural diagram of point A in Figure 4.

[0022] The following components are labeled in the diagram: 1. Support frame; 2. Box body; 3. Return pipe; 4. Recovery pipe; 5. Guide frame; 6. Adjustment component; 61. Connecting frame; 62. Rotating rod; 63. Drive component; 631. Housing; 632. First motor; 633. Gear set; 7. Cylinder; 8. Mixing component; 81. Rotating rod; 82. Paddle; 83. Transmission component; 831. Transmission rod; 832. First bevel gear; 833. Second bevel gear; 9. Return pump; 10. Connecting pipe; 11. Cylinder cover; 12. Second motor; 13. Connecting column; 14. Protective shell; 15. Third motor; 16. Connecting seat; 17. Mounting frame; 18. Mounting block; 19. Mounting bolt; 20. Water inlet pipe; 21. Liquid outlet; 22. Base. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Example 1:

[0027] Referring to Figures 1 to 5, this is the first embodiment of the present invention. This embodiment provides a reflux ratio adjuster, including a support frame 1, a box 2 fixed to the top of the support frame 1, a reflux pipe 3 and a recovery pipe 4 respectively installed on the inner wall of the box 2, a flow guide 5 for guiding the refluxed sludge inside the box 2, an adjustment component 6 for adjusting the flow guide angle of the flow guide 5 inside the box 2, one end of the reflux pipe 3 is connected to a cylinder 7, and a mixing component 8 is installed inside the cylinder 7.

[0028] The surfaces of the return pipe 3, the recovery pipe 4, and the guide frame 5 are coated with a polytetrafluoroethylene anti-stick coating to prevent sludge adhesion from affecting the diversion accuracy. The sludge is reintroduced into the aeration tank through the return pipe 3 to maintain the microbial biomass of the activated sludge system. Excess sludge is discharged through the recovery pipe 4 to control the total amount of sludge and prevent sludge aging or excessive accumulation. Together with the return pipe 3, the sludge diversion ratio is adjusted to optimize the system operating efficiency. The guide frame 5 is rotated by the adjusting component 6 to distribute the sludge to the return pipe 3 or the recovery pipe 4, realizing dynamic control of the return ratio. The cylinder 7 serves as a container for mixing sludge and water. The mixing component 8 enhances the mixing effect and ensures the uniformity of the returned sludge.

[0029] The adjustment assembly 6 includes a connecting frame 61 fixed to the inner wall of the housing 2. The inner wall of the connecting frame 61 is rotatably connected to two sets of rotating rods 62 for driving the flow guide 5 to rotate. One end of the rotating rod 62 is fixed to one side of the flow guide 5. The housing 2 is provided with a driving component 63 for driving the rotating rod 62 to rotate.

[0030] The drive unit 63 can drive the rotating rod 62 to rotate, and the rotating rod 62 drives the guide frame 5 to rotate, thereby adjusting the guiding angle of the guide frame 5 and distributing the sludge to the return pipe 3 or the recovery pipe 4 to achieve dynamic control of the return ratio.

[0031] The mixing component 8 includes a rotating rod 81 disposed on the inner wall of the cylinder 7. Multiple sets of blades 82 are mounted on the outer side of the rotating rod 81. A transmission component 83 for adjusting the stirring angle of the blades 82 is disposed inside the rotating rod 81.

[0032] The rotating rod 81 drives the blade 82 to rotate, and the blade 82 can mix the sludge and water. The angle of the blade 82 can be adjusted through the transmission component 83, which promotes the mixing of sludge and water flow and prevents stratification or sedimentation.

[0033] Example 2:

[0034] This is the second embodiment of the present invention, which is based on the previous embodiment.

[0035] Specifically, a reflux pump 9 is installed on the top of the support frame 1, and the discharge end of the reflux pump 9 is connected to a connecting pipe 10, with one end of the connecting pipe 10 connected to the top of the box 2.

[0036] The sludge is returned by the return pump 9, which provides the power for sludge return. The sludge from the secondary sedimentation tank is transported to the tank 2 through the connecting pipe 10. The sludge is guided and transported by the guide frame 5, and then reintroduced into the aeration tank through the return pipe 3 to maintain the microbial biomass of the activated sludge system.

[0037] Specifically, the driving component 63 includes a housing 631 fixed to the inner wall of the housing 2. A first motor 632 is installed on the inner wall of the housing 631. The output end of the first motor 632 is provided with a gear set 633 for driving the rotating rod 62 to rotate.

[0038] The gear set 633 includes two sets of meshing gears. One set of gears is fixed to the output end of the first motor 632, and the other set of gears is fixed to the outside of the rotating rod 62. When the first motor 632 is started, it drives the gear set 633 to rotate. The gear set 633 drives the rotating rod 62 to rotate, and the rotating rod 62 drives the guide frame 5 to rotate. The guide frame 5 guides the sludge into the recovery pipe 4, and the excess sludge is discharged through the recovery pipe 4. This controls the total amount of sludge, prevents sludge aging or excessive accumulation, and works with the return pipe 3 to adjust the sludge diversion ratio and optimize the system operating efficiency.

[0039] Example 3:

[0040] This is the third embodiment of the present invention, which is based on the first two embodiments.

[0041] Specifically, the transmission component 83 includes a transmission rod 831 rotatably connected to the inner wall of the rotating rod 81, a first bevel gear 832 fixed to the outer side of the transmission rod 831, and a second bevel gear 833 meshing with the outer side of the first bevel gear 832.

[0042] The rotation of the transmission rod 831 drives the first bevel gear 832 and the second bevel gear 833 to rotate, thereby adjusting the angle of the blade 82. By adjusting the angle, the shear force, turbulence intensity and circulation path of the fluid can be changed, thereby accelerating the mixing of sludge and water.

[0043] Specifically, a cylinder cover 11 is provided on the top of the cylinder body 7. A second motor 12 for driving the rotating rod 81 to rotate is installed on the top of the cylinder cover 11. A connecting column 13 is fixed to the output end of the second motor 12. A protective shell 14 is fixed to the bottom of the connecting column 13. A third motor 15 for driving the transmission rod 831 to rotate is fixed to the inner wall of the protective shell 14.

[0044] The second motor 12 can drive the connecting column 13 and the protective shell 14 to rotate, thereby driving the rotating rod 81 to rotate and the blade 82 to rotate, promoting the mixing of sludge and water flow and preventing stratification or sedimentation. The third motor 15 can drive the transmission rod 831 to rotate.

[0045] Specifically, a connecting seat 16 is fixed to one side of the second bevel gear 833, and the outer side of the connecting seat 16 is rotatably connected to the inner wall of the rotating rod 81. A mounting bracket 17 is fixed to one side of the connecting seat 16. A mounting block 18 for mounting the blade 82 is snapped into the inner wall of the mounting bracket 17, and one side of the mounting block 18 is fixed to one end of the blade 82. A mounting bolt 19 for fixing the mounting block 18 is threaded into the inner wall of the mounting bracket 17.

[0046] Insert the mounting block 18 into the mounting bracket 17 and fix the mounting block 18 inside the mounting bracket 17 with the mounting bolt 19 to achieve the effect of installing the blade 82 and facilitate the subsequent disassembly and replacement of the blade 82.

[0047] Specifically, the inner wall of the cylinder 7 is provided with a water inlet pipe 20 and a liquid outlet 21, and both the water inlet pipe 20 and the liquid outlet 21 are provided with solenoid valves on their outer sides. The bottom of the support frame 1 is fixed with a base 22, and the top of the base 22 is fixedly connected to the bottom of the cylinder 7.

[0048] Water to be mixed is introduced through inlet pipe 20 and mixed with sludge inside cylinder 7. The mixed liquid is discharged through outlet 21 and enters the aeration tank to ensure stable microbial concentration in the aeration tank, ultimately achieving efficient and low-consumption wastewater treatment.

[0049] In operation, the sludge return pump 9 provides the power for sludge return, transporting the sludge from the secondary sedimentation tank to the housing 2 via the connecting pipe 10. The sludge is then guided and transported by the guide frame 5, and reintroduced into the aeration tank via the return pipe 3 to maintain the microbial biomass of the activated sludge system. The first motor 632 is started, driving the gear set 633 to rotate, which in turn drives the rotating rod 62, which in turn drives the guide frame 5 to rotate, guiding the sludge into the recovery pipe 4. Excess sludge is discharged through the recovery pipe 4, controlling the total sludge volume and preventing sludge aging or excessive accumulation. Together with the return pipe 3, the sludge distribution ratio is adjusted to optimize system operating efficiency. The adjusting component 6 drives the guide frame 5 to rotate, distributing the sludge to the return pipe 3 or the recovery pipe 4, achieving dynamic control of the return ratio. Water to be mixed is introduced through the inlet pipe 20, mixing with the sludge within the cylinder 7. The second motor 12 drives the connecting column 1... The 3 and protective shell 14 rotate, thereby driving the rotating rod 81 to rotate, which in turn drives the blade 82 to rotate, promoting the mixing of sludge and water flow and preventing stratification or sedimentation. The third motor 15 can drive the transmission rod 831 to rotate, which in turn drives the first bevel gear 832 and the second bevel gear 833 to rotate, thereby adjusting the angle of the blade 82. By adjusting the angle, the shear force, turbulence intensity and circulation path of the fluid can be changed, thereby accelerating the mixing of sludge and water flow. The mounting block 18 is inserted into the mounting frame 17 and fixed inside the mounting frame 17 by the mounting bolt 19, thereby achieving the effect of installing the blade 82 and facilitating the subsequent disassembly and replacement of the blade 82. The mixed liquid is discharged through the outlet 21 and enters the aeration tank to ensure the stability of the microbial concentration in the aeration tank, ultimately achieving efficient and low-consumption sewage treatment.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A reflux ratio regulator, comprising a support frame (1), characterized in that: The top of the support frame (1) is fixed with a box (2). The inner wall of the box (2) is respectively equipped with a return pipe (3) and a recovery pipe (4). The box (2) is equipped with a guide frame (5) for guiding the return sludge. The box (2) is equipped with an adjustment component (6) for adjusting the guiding angle of the guide frame (5). One end of the return pipe (3) is connected to a cylinder (7). The cylinder (7) is equipped with a mixing component (8). The adjustment component (6) includes a connecting frame (61) fixed to the inner wall of the box (2). The inner wall of the connecting frame (61) is rotatably connected to two sets of rotating rods (62) for driving the flow guide frame (5) to rotate, and one end of the rotating rod (62) is fixed to one side of the flow guide frame (5). The inside of the box (2) is provided with a driving component (63) for driving the rotating rod (62) to rotate. The mixing component (8) includes a rotating rod (81) provided on the inner wall of the cylinder (7). Multiple sets of blades (82) are installed on the outside of the rotating rod (81). The inside of the rotating rod (81) is provided with a transmission component (83) for adjusting the stirring angle of the blades (82).

2. The reflux ratio regulator as described in claim 1, characterized in that: A reflux pump (9) is installed on the top of the support frame (1). The discharge end of the reflux pump (9) is connected to a connecting pipe (10), and one end of the connecting pipe (10) is connected to the top of the box (2).

3. The reflux ratio regulator as described in claim 1, characterized in that: The driving component (63) includes a housing (631) fixed to the inner wall of the housing (2). A first motor (632) is installed on the inner wall of the housing (631). The output end of the first motor (632) is provided with a gear set (633) for driving the rotating rod (62) to rotate.

4. The reflux ratio regulator as described in claim 1, characterized in that: The transmission component (83) includes a transmission rod (831) rotatably connected to the inner wall of the rotating rod (81), a first bevel gear (832) is fixed on the outer side of the transmission rod (831), and a second bevel gear (833) is meshed on the outer side of the first bevel gear (832).

5. The reflux ratio regulator as described in claim 4, characterized in that: The top of the cylinder (7) is provided with a cylinder cover (11), and a second motor (12) for driving the rotating rod (81) to rotate is installed on the top of the cylinder cover (11). A connecting column (13) is fixed at the output end of the second motor (12), and a protective shell (14) is fixed at the bottom of the connecting column (13). A third motor (15) for driving the transmission rod (831) to rotate is fixed on the inner wall of the protective shell (14).

6. The reflux ratio regulator as described in claim 4, characterized in that: A connecting seat (16) is fixed on one side of the second bevel gear (833), and the outer side of the connecting seat (16) is rotatably connected to the inner wall of the rotating rod (81). A mounting bracket (17) is fixed on one side of the connecting seat (16), and a mounting block (18) for mounting the blade (82) is snapped into the inner wall of the mounting bracket (17). One side of the mounting block (18) is fixed to one end of the blade (82), and a mounting bolt (19) for fixing the mounting block (18) is threaded into the inner wall of the mounting bracket (17).

7. The reflux ratio regulator as described in claim 1, characterized in that: The inner wall of the cylinder (7) is provided with a water inlet pipe (20) and a liquid outlet (21), and both the water inlet pipe (20) and the liquid outlet (21) are provided with solenoid valves. The bottom of the support frame (1) is fixed with a base (22), and the top of the base (22) is fixedly connected to the bottom of the cylinder (7).

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