Aeration and precipitation integrated treatment device for sewage treatment

Abstract

This invention belongs to the field of wastewater treatment technology and discloses an integrated aeration and sedimentation treatment device for wastewater treatment. It includes a treatment tank, on which two side pipes, a feeding pipe, a pump, and an air pump are fixedly installed. A partition is fixedly installed inside the treatment tank, with evenly spaced through holes. Multiple aeration mechanisms are also fixedly installed on the partition, and these mechanisms are connected to an air inlet pipe assembly, which in turn is connected to the air pump. Each aeration mechanism includes an upper shell, a lower cylinder, a rotating shaft, an impeller, multiple connecting frames, an annular frame, and multiple air outlet pipes. The upper shell is connected to the air inlet pipe assembly via the lower cylinder, and the lower cylinder is fixedly installed on the partition. The rotating shaft is rotatably mounted inside the upper shell, and the impeller is fixedly mounted on the rotating shaft. This invention, by changing the effective air jet range of the air outlet pipes through the multiple through holes on the annular frame, forms a multi-segment aeration range, thereby improving the aeration effect.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a wastewater treatment device integrating aeration and sedimentation. Background Technology

[0002] In the wastewater treatment process, wastewater needs to be transported into a tank or container, and then flocculant is added to the wastewater to cause flocculation and precipitation of substances in the wastewater. To further accelerate the flocculation process, an aeration device is used to transport outside air into the wastewater. This not only speeds up the mixing of flocculant and wastewater but also provides the oxygen needed for the treatment process. However, conventional aeration devices directly draw external air into the wastewater using an air pump. For example, according to the patent document with authorization announcement number "CN115583734B", a rotary aeration device and aeration method for wastewater treatment are disclosed, including a shell, a rotating rod rotatably connected to the top surface of the shell near the middle, and two symmetrical inlets penetrating the bottom surface of the shell. The invention utilizes an air inlet pipe. During use, gas is introduced into the casing through the air inlet pipe. The gas is discharged through the aeration holes, generating bubbles that dissolve in the wastewater, providing dissolved oxygen to microorganisms. By adjusting the diameter of the aeration holes, bubbles of different sizes can be generated in the wastewater, ensuring that wastewater at different locations can quickly obtain dissolved oxygen. Simultaneously, when the rotating rod rotates, auxiliary components break up the bubbles in the wastewater, allowing the gas to mix quickly with the wastewater. An air-adding component further enhances the mixing effect of wastewater and gas by adding gas into the wastewater during the operation of the auxiliary components. However, because the position of the aeration holes is fixed, the aeration range is relatively limited, which is not conducive to wastewater treatment. Therefore, this technical problem needs to be solved. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides an integrated aeration and sedimentation treatment device for sewage treatment, which effectively solves the problem that conventional aeration devices directly draw external air into the sewage through an air pump, resulting in a limited aeration range.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated aeration and sedimentation treatment device for sewage treatment, comprising a treatment tank, two side pipes, a feeding pipe, a pump body and an air pump respectively fixedly installed on the treatment tank, a partition fixedly installed inside the treatment tank, with evenly spaced round holes on the partition, and multiple aeration mechanisms fixedly installed on the partition, the multiple aeration mechanisms being connected to an air inlet pipe group, and the air inlet pipe group being connected to the air pump;

[0005] The aeration mechanism includes an upper shell, a lower cylinder, a rotating shaft, an impeller, multiple connecting frames, an annular frame, and multiple air outlet pipes. The upper shell is connected to the air inlet pipe assembly via the lower cylinder and is fixedly mounted on a partition. The rotating shaft is rotatably mounted inside the upper shell, and the impeller is fixedly mounted on the rotating shaft. The impeller is fixedly mounted to the annular frame via multiple connecting frames, and the annular frame is rotatably fitted with the upper shell. Multiple air outlet pipes are fixedly mounted on the outer side of the upper shell. Multiple through holes are sequentially opened on the annular frame, and the area of ​​the multiple through holes changes linearly along the circumference of the annular frame. A pressure relief valve and a one-way valve are also fixedly mounted inside the air outlet pipes, with the pressure relief valve located between the one-way valve and the upper shell.

[0006] Preferably, the overall shape of the circular hole is conical, and the tip of the conical circular hole faces the bottom of the processing box.

[0007] Preferably, the radius of the lower cylinder near the upper shell is smaller than the radius of the lower cylinder away from the upper shell.

[0008] Preferably, the area of ​​the plurality of through holes increases sequentially in a counterclockwise direction along the annular frame, starting with the through hole with the smallest area.

[0009] Preferably, the air outlet pipe is further fixedly provided with two outer plates and two inner plates, with the two inner plates located between the two outer plates. The two outer plates and the air outlet pipe form an outer cavity, the two outer plates, the two inner plates and the air outlet pipe form a middle cavity, and the two inner plates and the air outlet pipe form an inner cavity.

[0010] Preferably, there are three through holes. The longitudinal dimension of the through hole with the largest area is greater than or equal to the diameter of the air outlet pipe. The longitudinal dimension of the through hole with the middle area is equal to the longitudinal dimension between the two outer plates. The longitudinal dimension of the through hole with the smallest area is equal to the longitudinal dimension between the two inner plates.

[0011] Preferably, the upper housing is further provided with an auxiliary mechanism, which includes a driving gear, multiple driven gears, multiple driven shafts and multiple stirring rods. The driving gear is fixedly mounted on the rotating shaft, and the driving gear meshes with the multiple driven gears. The multiple driven gears are respectively fixedly mounted on the multiple driven shafts, and the multiple driven shafts are rotatably mounted on the upper housing. The multiple stirring rods are respectively fixedly mounted on the multiple driven shafts.

[0012] Preferably, the radius of the driving gear is larger than the radius of the driven gear.

[0013] Preferably, the upper housing forms two mounting chambers, wherein the driving gear and multiple driven gears in the auxiliary mechanism are located in the upper mounting chamber, and the rotating shaft, impeller, multiple connecting frames and annular frame in the aeration mechanism are located in the lower mounting chamber, and the air outlet pipe is connected to the lower mounting chamber.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. During operation, the air pump, lower cylinder, upper shell, impeller, and air outlet pipe work together to drive the impeller to rotate during aeration, thereby driving the ring frame to move. The effective jet range of the air outlet pipe is changed through multiple through holes on the ring frame, thus forming a multi-stage aeration range and improving the aeration effect.

[0016] 2. During operation, the combination of the ring frame, outer plate and inner plate can match the effective air outlet area in the air pipe according to the different through holes and air outlet pipes, thereby further expanding the aeration range and enhancing the aeration effect.

[0017] 3. During operation, the auxiliary mechanism can be driven by the impeller and rotating shaft to move, thereby causing the stirring rod on the driven shaft to stir the sewage, thus further enhancing the mixing rate of flocculant and sewage. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] In the attached diagram:

[0020] Figure 1 This is a schematic diagram of the integrated aeration and sedimentation treatment device for wastewater treatment according to the present invention.

[0021] Figure 2 This is one of the schematic diagrams of the partition structure of the present invention;

[0022] Figure 3 This is a second schematic diagram of the partition structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the aeration mechanism of the present invention;

[0024] Figure 5 This is a cross-sectional view of the aeration mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0026] Figure 7This is a schematic diagram of the ring frame and impeller mounting structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of the air outlet pipe of the present invention.

[0028] In the diagram: 1. Processing box; 2. Side pipe; 3. Feeding pipe; 4. Pump body; 5. Air pump; 6. Baffle plate; 7. Circular hole; 8. Air inlet pipe assembly; 9. Installation chamber; 10. Upper shell; 11. Lower cylinder; 12. Rotating shaft; 13. Impeller; 14. Connecting frame; 15. Annular frame; 16. Air outlet pipe; 17. Through hole; 18. Pressure relief valve; 19. Check valve; 20. Outer plate; 21. Inner plate; 22. Outer cavity; 23. Middle cavity; 24. Inner cavity; 25. Driven gear; 26. Driven gear; 27. Driven shaft; 28. Stirring rod. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] Depend on Figures 1-8 The present invention relates to an integrated aeration and sedimentation treatment device for wastewater treatment, comprising a treatment tank 1, two side pipes 2, a feeding pipe 3, a pump body 4 and an air pump 5 respectively fixedly installed on the treatment tank 1, a partition 6 fixedly installed inside the treatment tank 1, the partition 6 having evenly distributed round holes 7, and multiple aeration mechanisms fixedly installed on the partition 6, the multiple aeration mechanisms being connected to an air inlet pipe group 8, the air inlet pipe group 8 being connected to the air pump 5;

[0031] In this design, during operation, wastewater is transported to the treatment tank 1 via one of the side pipes 2 using an external power source. Flocculant is then added to the treatment tank 1 through the feed pipe 3. The flocculant causes the substances in the wastewater to quickly flocculate and settle. The settled material then falls to the bottom of the treatment tank 1 through the round holes 7 on the partition 6 for storage. When there is too much flocculated sediment, it can be pumped out by the pump 4 and sent to the next process. The treated wastewater can be pumped out by the external power source in conjunction with the other side pipe 2 to enter the next process. During the wastewater flocculation process, outside air is drawn into the air inlet pipe group 8 by the air pump 5 and then discharged through multiple aeration mechanisms. This aeration accelerates the flocculation process of the wastewater and provides oxygen for the wastewater treatment process.

[0032] However, simply drawing outside air into the treatment tank 1 using conventional methods results in a concentrated air distribution and excessively large air bubbles, which can reduce the aeration effect on the wastewater. Therefore, the following technical solution is provided:

[0033] The aeration mechanism includes an upper shell 10, a lower cylinder 11, a rotating shaft 12, an impeller 13, multiple connecting frames 14, an annular frame 15, and multiple air outlet pipes 16. The upper shell 10 is connected to the air inlet pipe assembly 8 via the lower cylinder 11 and is fixedly mounted on the partition plate 6. The rotating shaft 12 is rotatably mounted inside the upper shell 10, and the impeller 13 is fixedly mounted on the rotating shaft 12. The impeller 13 is fixedly mounted to the annular frame 15 via multiple connecting frames 14. The annular frame 15 is rotatably engaged with the upper shell 10. The multiple air outlet pipes 16 are all fixedly mounted on the outside of the upper shell 10. Multiple through holes 17 are sequentially opened on the annular frame 15, and the area of ​​the multiple through holes 17 changes linearly along the circumference of the annular frame 15. A pressure relief valve 18 and a one-way valve 19 are also fixedly mounted inside the air outlet pipes 16. The pressure relief valve 18 is located between the one-way valve 19 and the upper shell 10.

[0034] With this design, when air enters the interior of the upper shell 10 through the air inlet pipe assembly 8 and the lower cylinder 11, the airflow discharged from the lower cylinder 11 impacts the impeller 13 on the rotating shaft 12, causing the impeller 13 to rotate. The impeller 13 drives the annular frame 15 to move through the connecting frame 14. As air continues to enter, it eventually reaches the threshold of the pressure relief valve 18, causing the air in the upper shell 10 to be discharged through the air outlet pipe 16. During the rotation of the annular frame 15, multiple through holes 17 on the annular frame 15 sequentially come into contact with the air outlet pipe 16, thereby changing the effective communication area between the air outlet pipe 16 and the upper shell 10, thus changing the flow rate of the airflow entering the air outlet pipe 16. This results in different effective distances for the airflow after it is discharged through the air outlet pipe 16, thereby expanding the effective aeration range of the air outlet pipe 16.

[0035] Specifically, the overall shape of the circular hole 7 is conical, and the tip of the conical circular hole 7 faces the bottom of the treatment tank 1. This design makes it difficult for the sediment generated by flocculation to move back to the top of the circular hole 7 after passing through it, thus making the sediment concentrated at the bottom of the treatment tank 1.

[0036] Specifically, the radius of the lower cylinder 11 near the upper shell 10 is smaller than the radius of the lower cylinder 11 away from the upper shell 10. This design can increase the airflow velocity discharged from the lower cylinder 11 by reducing the effective ventilation cross-sectional area, so as to ensure the impact force on the impeller 13 to make it move.

[0037] Specifically, starting with the smallest through hole 17, the areas of the multiple through holes 17 increase sequentially in a counterclockwise direction along the annular frame 15; this design enables the airflow discharged from the exhaust pipe 16 to form multiple jet distances of different distances.

[0038] Furthermore, two outer plates 20 and two inner plates 21 are fixedly installed inside the vent pipe 16. The two inner plates 21 are located between the two outer plates 20. The two outer plates 20 and the vent pipe 16 form an outer cavity 22. The two outer plates 20, the two inner plates 21 and the vent pipe 16 form a middle cavity 23. The two inner plates 21 and the vent pipe 16 form an inner cavity 24.

[0039] There are three through holes 17. The longitudinal dimension of the through hole 17 with the largest area is greater than or equal to the diameter of the air outlet pipe 16. The longitudinal dimension of the through hole 17 with the middle area is equal to the longitudinal dimension between the two outer plates 20. The longitudinal dimension of the through hole 17 with the smallest area is equal to the longitudinal dimension between the two inner plates 21.

[0040] With this design, when the largest through-hole 17 is in contact with the air outlet pipe 16, the interior of the air outlet pipe 16 is completely open, and the outer cavity 22, middle cavity 23, and inner cavity 24 are all connected. Because the effective ventilation area of ​​the air outlet pipe 16 is the largest, its effective jet distance is the smallest under a certain pressure. When the through-hole 17 with a medium area is in contact with the air outlet pipe 16, it will block the corresponding outer cavity 22. At this time, only the middle cavity 23 and the inner cavity 24 are connected, and its effective jet distance will increase under a certain pressure. When the smallest through-hole 17 is in contact with the air outlet pipe 16, it will block the corresponding outer cavity 22 and middle cavity 23. At this time, only the inner cavity 24 is open, and its effective ventilation area is the smallest. Therefore, under a certain pressure, its effective jet distance is the largest. This forms a three-stage jet range, improving the effective aeration range.

[0041] An auxiliary mechanism is also provided inside the upper housing 10. The auxiliary mechanism includes a driving gear 25, multiple driven gears 26, multiple driven shafts 27, and multiple stirring rods 28. The driving gear 25 is fixedly mounted on the rotating shaft 12. The driving gear 25 is meshed with the multiple driven gears 26. The multiple driven gears 26 are respectively fixedly mounted on the multiple driven shafts 27. The multiple driven shafts 27 are rotatably mounted on the upper housing 10. The multiple stirring rods 28 are respectively fixedly mounted on the multiple driven shafts 27.

[0042] With this design, as the impeller 13 drives the rotating shaft 12 to rotate, the rotating shaft 12 also drives the drive gear 25 to rotate. The drive gear 25 drives multiple driven gears 26 to rotate through meshing. The driven gears 26 drive the stirring rod 28 to rotate through the corresponding driven shaft 27, thereby stirring the sewage through the stirring rod 28, thus accelerating the mixing process of flocculant and sewage.

[0043] Specifically, the radius of the driving gear 25 is larger than that of the driven gear 26; this design allows the driven shaft 27 to rotate at a higher speed when the driving gear 25 rotates at a low speed, thereby ensuring the effectiveness of the stirring rod 28.

[0044] Specifically, the upper housing 10 has two mounting chambers 9 inside. The driving gear 25 and multiple driven gears 26 in the auxiliary mechanism are located in the upper mounting chamber 9, while the rotating shaft 12, impeller 13, multiple connecting frames 14 and annular frame 15 in the aeration mechanism are located in the lower mounting chamber 9. The air outlet pipe 16 is connected to the lower mounting chamber 9. This design facilitates the separation of the transmission parts from the airflow conversion space.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device with integrated aeration and sedimentation, comprising a treatment tank (1), two side pipes (2), a feeding pipe (3), a pump body (4) and an air pump (5) are fixedly installed on the treatment tank (1), a partition (6) is fixedly installed inside the treatment tank (1), and round holes (7) are evenly opened on the partition (6). Multiple aeration mechanisms are also fixedly installed on the partition (6), and the multiple aeration mechanisms are connected to the air inlet pipe group (8), which is connected to the air pump (5). Its features are, The aeration mechanism includes an upper shell (10), a lower cylinder (11), a rotating shaft (12), an impeller (13), multiple connecting frames (14), an annular frame (15), and multiple air outlet pipes (16). The upper shell (10) is fixedly connected to the air inlet pipe assembly (8) through the lower cylinder (11), and the lower cylinder (11) is fixedly mounted on the partition plate (6). The rotating shaft (12) is rotatably mounted inside the upper shell (10), and the impeller (13) is fixedly mounted on the rotating shaft (12). The impeller (13) is connected to the air outlet pipes (16) through multiple connecting frames. (14) is fixedly installed with the ring frame (15), the ring frame (15) is rotatably fitted with the upper shell (10), and multiple air outlet pipes (16) are fixedly installed on the outside of the upper shell (10); multiple through holes (17) are sequentially opened on the ring frame (15), and the area of ​​the multiple through holes (17) changes linearly along the circumference of the ring frame (15); a pressure relief valve (18) and a one-way valve (19) are also fixedly installed inside the air outlet pipe (16), and the pressure relief valve (18) is located between the one-way valve (19) and the upper shell (10); Among the multiple through holes (17), starting with the through hole (17) with the smallest area, the areas of the multiple through holes (17) increase sequentially in a counterclockwise direction along the ring frame (15); The air outlet pipe (16) is also fixedly provided with two outer plates (20) and two inner plates (21). The two inner plates (21) are located between the two outer plates (20). The two outer plates (20) and the air outlet pipe (16) form an outer cavity (22). The two outer plates (20), the two inner plates (21) and the air outlet pipe (16) form a middle cavity (23). The two inner plates (21) and the air outlet pipe (16) form an inner cavity (24). The through hole (17) is provided in three parts. The longitudinal dimension of the through hole (17) with the largest area is greater than or equal to the diameter of the air outlet pipe (16). The longitudinal dimension of the through hole (17) with the middle area is equal to the longitudinal dimension between the two outer plates (20). The longitudinal dimension of the through hole (17) with the smallest area is equal to the longitudinal dimension between the two inner plates (21).

2. The integrated aeration and sedimentation treatment device for wastewater treatment according to claim 1, characterized in that: The overall shape of the circular hole (7) is conical, and the tip of the conical circular hole (7) faces the bottom of the processing box (1).

3. The integrated aeration and sedimentation treatment device for wastewater treatment according to claim 1, characterized in that: The radius of the lower cylinder (11) near the upper shell (10) is smaller than the radius of the lower cylinder (11) away from the upper shell (10).

4. The integrated aeration and sedimentation treatment device for wastewater treatment according to claim 1, characterized in that: An auxiliary mechanism is also provided inside the upper housing (10). The auxiliary mechanism includes a drive gear (25), multiple driven gears (26), multiple driven shafts (27), and multiple stirring rods (28). The drive gear (25) is fixedly mounted on the rotating shaft (12). The drive gear (25) and multiple driven gears (26) are meshed together. The multiple driven gears (26) are fixedly mounted on multiple driven shafts (27). The multiple driven shafts (27) are rotatably mounted on the upper housing (10). The multiple stirring rods (28) are fixedly mounted on multiple driven shafts (27).

5. The integrated aeration and sedimentation treatment device for wastewater treatment according to claim 4, characterized in that: The radius of the driving gear (25) is larger than that of the driven gear (26).

6. The integrated aeration and sedimentation treatment device for wastewater treatment according to claim 5, characterized in that: The upper housing (10) forms two mounting chambers (9) inside. The driving gear (25) and multiple driven gears (26) in the auxiliary mechanism are located in the upper mounting chamber (9), while the rotating shaft (12), impeller (13), multiple connecting frames (14) and ring frame (15) in the aeration mechanism are located in the lower mounting chamber (9), and the air outlet pipe (16) is connected to the lower mounting chamber (9).

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