A flotation device for wastewater treatment

Abstract

This utility model proposes an air flotation device for wastewater treatment, including a base plate. Support legs are fixedly installed at the four corners of the top of the base plate. A top frame is fixedly installed on the top of each support leg. A treatment tank is fixedly installed inside the top frame. An oil discharge mechanism is fixedly installed on the top of the treatment tank. An air flotation mechanism is fixedly installed at the bottom of the treatment tank. A wastewater addition pipe is fixedly installed on the upper side of one side of the treatment tank. During application, this technical solution utilizes an oil discharge mechanism. The inverted trapezoidal structure of the oil collection bucket forms a uniform guide. Combined with the pushing action of the oil discharge auger within the oil collection frame and the monitoring by a non-contact liquid level sensor, oil can be quickly collected and discharged in real time during use, eliminating the need for multi-step centralized operation. The oil discharge valve and oil discharge pipe can also precisely control the oil discharge process, thereby achieving the effects of avoiding secondary dissolution of oil and improving the controllability of oil discharge. This solves the problems of cumbersome and untimely oil discharge in existing technologies.

Description

Technical Field

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

[0002] Air flotation is a commonly used technology for removing oil in wastewater treatment. Its principle is to introduce or generate a large number of microbubbles in the water, allowing the bubbles to attach to the suspended oil particles, increasing the buoyancy of the suspended particles. By using the principle of buoyancy, the oil floats to the surface of the water, thereby achieving the purpose of removing oil. Although the existing air flotation treatment method can blow suspended impurities to the top, it has obvious shortcomings. If the impurities are not cleaned in time, they are easy to dissolve back into the wastewater. There is a lack of means to treat the impurities on the air flotation in a timely manner. Chinese Patent No. CN214004109U discloses an air flotation device for wastewater treatment. The device includes a treatment tank, an extension sleeve connected to and extending through the left side of the treatment tank, a tension spring fixedly installed inside the extension sleeve, a scraping mechanism fixedly installed at one end of the tension spring inside the treatment tank, a discharge mechanism fixedly installed on the outer surface of the right side of the treatment tank, the discharge mechanism extending into the treatment tank, a gathering mechanism fixedly installed on the left side inside the treatment tank, a power mechanism fixedly installed on the top left side of the treatment tank, and a scraping mechanism including a scraper plate slidably connected inside the treatment tank. The device drives the scraper plate to move by a motor, which can move the suspended solids in the wastewater to the rightmost end, and the scraping mechanism can scoop the concentrated suspended solids out of the water surface, achieving the effect of collecting suspended solids and solving the problem of secondary dissolution caused by untimely treatment in the prior art. However, the device still has defects and shortcomings in practical applications. Regarding oil removal, after oil sludge forms on the top of the wastewater flotation system, multiple steps are required to remove it, making rapid and real-time oil removal impossible. Before each oil removal operation, the oil sludge must be collected by a scraping mechanism before being discharged by the discharge mechanism. This process is time-consuming, and during the interval between collection and discharge, some oil sludge may re-integrate into the water due to prolonged retention, resulting in poor oil removal efficiency. The overall oil removal process is cumbersome and inconvenient, affecting the continuity of wastewater treatment. Furthermore, in terms of bubble treatment and wastewater agitation, the device lacks a dedicated agitation structure during operation. During the aeration process, the bubbles generated tend to merge and form large bubbles as they rise without external intervention. These large bubbles have a relatively small contact area with oil particles and rise at a fast speed, reducing the chances of them combining and lowering the combination efficiency. Furthermore, the wastewater remains relatively still due to the lack of agitation, resulting in uneven distribution of oil particles and further reducing the probability of contact with bubbles. This hinders effective contact between bubbles and wastewater, ultimately leading to low oil-bubble combination efficiency and poor overall flotation treatment efficiency. The process is also cumbersome and inconvenient, thus requiring design improvements. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes an air flotation device for wastewater treatment, which can more accurately solve the problems described above.

[0004] This utility model is achieved through the following technical solution: This utility model proposes an air flotation device for wastewater treatment, including a base plate, with support legs fixedly installed at the four corners of the top of the base plate, a top frame fixedly installed on the top of the support legs, a treatment box fixedly installed on the inner side of the top frame, an oil discharge mechanism fixedly installed on the top of the treatment box, an air flotation mechanism fixedly installed at the bottom of the treatment box, and a wastewater addition pipe fixedly installed on the upper side of one side of the treatment box, with the output end of the wastewater addition pipe connected to the interior of the treatment box; The air flotation mechanism includes a discharge hopper, an air flotation module, a stirring module, a drive module, and a discharge module. The discharge hopper is fixedly installed at the bottom of the processing tank, and the discharge module is fixedly installed at the bottom of the discharge hopper. The stirring module is rotatably connected to the middle of the processing tank, and the drive module is fixedly installed on one side of the processing tank. The output end of the drive module is connected to the outside of the stirring module and the discharge module, respectively. The air flotation module is disposed between the discharge hopper and the stirring module inside the processing tank.

[0005] Furthermore, the drive module includes a side frame and an upper synchronous pulley. The side frame is fixedly installed on the lower side of the processing box. A first motor is fixedly installed on the outer side of the side frame. The output end of the first motor passes through the side frame and is fixedly installed with a lower synchronous pulley. The upper synchronous pulley is rotatably connected to the middle of the side of the processing box near the first motor. The upper and lower synchronous pulleys are connected by a synchronous belt drive. A coupling is fixedly installed on the middle of the side of the lower and upper synchronous pulleys near the processing box. The coupling is connected to the stirring module and the discharging module respectively through a coupling.

[0006] Furthermore, the stirring module includes a rotating shaft, which is rotatably connected to the middle of the processing tank. The outer end of the rotating shaft is connected to a connecting shaft located inside the upper synchronous pulley via a coupling. Fixed rings are fixedly installed on the outer surface of the rotating shaft in a linear arrangement at equal intervals. A bubble crushing mesh plate is fixedly installed on the outer side of the fixed rings in a ring-shaped arrangement at equal intervals.

[0007] Furthermore, the discharge module includes a waste discharge main pipe, which is fixedly installed at the bottom of the discharge hopper. A slag discharge auger is rotatably connected inside the waste discharge main pipe. A slag discharge pipe is fixedly installed at the end of the waste discharge main pipe away from the first motor. A slag discharge regulating valve is fixedly installed at the output end of the slag discharge pipe. One end of the slag discharge auger is connected to the end of the shaft on the lower synchronous pulley through a coupling.

[0008] Furthermore, the air flotation module includes an air supply pipe and an aeration pipe frame. The air supply pipe is fixedly installed at the lower back of the treatment box, and the aeration pipe frame is fixedly installed at the lower end of the treatment box, located between the rotating shaft and the inner side of the discharge hopper. The input end of the aeration pipe frame is connected to the output end of the air supply pipe, and aeration bubble pipes are fixedly installed at equal intervals along the extension direction of the aeration pipe frame at the bottom of the aeration pipe frame.

[0009] Furthermore, a connecting flange is fixedly installed at the input end of the air supply pipe, and a connecting flange is also fixedly installed at the input end of the wastewater addition pipe.

[0010] Furthermore, the oil discharge mechanism includes an upward-floating oil collection hopper, which is fixedly installed on the top of the processing tank. The overall side shape of the upward-floating oil collection hopper is an inverted trapezoid. An oil collection frame is fixedly installed on the top of the upward-floating oil collection hopper. An oil discharge auger is rotatably connected inside the oil collection frame. A second motor is fixedly installed on the side of the oil collection frame closer to the first motor. The output end of the second motor passes through the oil collection frame and is fixedly connected to one end of the oil discharge auger. An oil discharge valve is fixedly installed on the lower end of the side of the oil collection frame away from the second motor. The input end of the oil discharge valve is connected to the inside of the oil collection frame. An oil discharge pipe is fixedly installed on the output end of the oil discharge valve. A non-contact liquid level sensor is fixedly installed on the top side of the oil collection frame.

[0011] The beneficial effects of this utility model are: 1. During the application of this technical solution, by setting up an oil discharge mechanism, the inverted trapezoidal structure of the floating oil collection bucket forms a uniform guide, and with the pushing of the oil discharge auger in the oil collection frame and the monitoring of the non-contact liquid level sensor, the oil can be quickly collected and discharged in real time during use without the need for multi-step centralized operation. The oil discharge valve and oil discharge pipe can also accurately control the oil discharge process, thereby achieving the effect of avoiding secondary dissolution of oil and improving the controllability of oil discharge, solving the problems of cumbersome and untimely oil discharge in the existing technology; 2. During the application of this technical solution, the bubble crushing mesh plate of the stirring module cuts the bubbles and stirs the wastewater. The driving module synchronously drives the stirring and discharge modules to work. The air flotation module enhances the air flotation effect, and the discharge module discharges the waste residue in time. This improves the efficiency of bubble and oil combination during use, reduces the number of power sources, and enables continuous treatment. In this way, it improves the overall treatment efficiency and simplifies the structure, solving the problems of easy bubble fusion, low treatment efficiency, and cumbersome use in the existing technology. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3This is a schematic diagram of the internal structure of the processing box of this utility model; Figure 4 This is a top view of the structure of this utility model.

[0013] In the diagram: 1. Base plate; 2. Support leg; 3. Top frame; 4. Processing box; 5. Oil discharge mechanism; 51. Floating oil collection hopper; 52. Oil collection frame; 53. Oil discharge auger; 54. Second motor; 55. Oil discharge valve; 56. Oil discharge pipe; 57. Non-contact liquid level sensor; 6. Air flotation mechanism; 61. Discharge hopper; 62. Air flotation module; 621. Air supply pipe; 622. Aeration pipe frame; 623. Aeration bubble pipe; 63. Stirring 631. Mixing module; 632. Rotating shaft; 633. Fixing ring; 634. Bubble crushing mesh plate; 65. Drive module; 641. Side frame; 642. Upper synchronous pulley; 643. First motor; 644. Lower synchronous pulley; 645. Synchronous belt; 646. Coupling; 65. Discharge module; 651. Waste slag discharge main pipe; 652. Slag discharge auger; 653. Slag discharge pipe; 654. Slag discharge regulating valve; 7. Wastewater addition pipe; 8. Connecting flange. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1 A flotation device for wastewater treatment includes a base plate 1, with support legs 2 fixedly installed at the four corners of the top of the base plate 1, a top frame 3 fixedly installed on the top of the support legs 2, a treatment tank 4 fixedly installed on the inner side of the top frame 3, an oil discharge mechanism 5 fixedly installed on the top of the treatment tank 4, a flotation mechanism 6 fixedly installed at the bottom inside the treatment tank 4, and a wastewater addition pipe 7 fixedly installed on the upper side of one side of the treatment tank 4, with the output end of the wastewater addition pipe 7 connected to the interior of the treatment tank 4. The air flotation mechanism 6 includes a discharge hopper 61, an air flotation module 62, a mixing module 63, a drive module 64, and a discharge module 65. The discharge hopper 61 is fixedly installed at the bottom of the processing tank 4, and the discharge module 65 is fixedly installed at the bottom of the discharge hopper 61. The mixing module 63 is rotatably connected to the middle of the processing tank 4. The drive module 64 is fixedly installed on one side of the processing tank 4, and its output end is connected to the outside of both the mixing module 63 and the discharge module 65. The air flotation module 62 is located between the discharge hopper 61 and the mixing module 63 within the processing tank 4, supplying air to the processing tank. The outer end of the air pipe 621 is connected to an air pump via a connecting flange 8. The air pump supplies air to the air supply pipe 621, thus functioning as an air flotation device. The outer end of its wastewater addition pipe 7 can also be connected to an external wastewater supply pipeline via the connecting flange 8. Overall, the device provides a good wastewater supply function. During operation, the base plate 1 and support legs 2 provide stable support for the top frame 3 and treatment tank 4, ensuring the stability of the entire equipment during operation. The treatment tank 4 serves as the core treatment space, with the wastewater addition pipe 7 on one side connected to the outer flange 8. Connected to an external wastewater supply pipeline, the wastewater to be treated is introduced into the treatment tank 4. This connection method ensures the airtightness and convenience of the wastewater supply, and can stably and continuously provide the treatment tank 4 with wastewater to be treated. The oil discharge mechanism 5 at the top of the treatment tank 4 is responsible for collecting and discharging the floating oil, while the air flotation mechanism 6 at the bottom of the tank undertakes the main work of air flotation treatment. In the air flotation mechanism 6, the discharge hopper 61 is located at the bottom of the treatment tank 4 to collect the deposited waste residue, and the discharge module 65 at the bottom of the hopper discharges this waste residue. The stirring module 63 is located in the treatment tank 4. The rotating inner part can agitate the wastewater, making the oil particles in the wastewater more evenly distributed. The drive module 64 is fixed on one side of the treatment tank 4, providing power to the stirring module 63 and the discharge module 65 to ensure that the two work together. The air flotation module 62 is located between the discharge hopper 61 and the stirring module 63. The outer end of the air supply pipe 621 is connected to the air pump through the connecting flange 8. The air pump supplies air to the air supply pipe 621. The gas enters the treatment tank 4 through the air flotation module 62. The generated bubbles come into contact with and adhere to the oil particles in the wastewater, causing the oil to float to the surface and improving the air flotation effect.

[0016] Combination Figures 3-4As shown, the drive module 64 includes a side frame 641 and an upper synchronous pulley 642. The side frame 641 is fixedly installed on the lower side of the processing box 4. A first motor 643 is fixedly installed on the outer side of the side frame 641. The output end of the first motor 643 passes through the side frame 641 and is fixedly installed with a lower synchronous pulley 644. The upper synchronous pulley 642 is rotatably connected to the middle of the side of the processing box 4 near the first motor 643. The upper synchronous pulley 642 and the lower synchronous pulley 644 are connected by a synchronous belt 645. The lower synchronous pulley 644 and the upper synchronous pulley 642 are close to the processing box. A coupling 646 is fixedly installed in the middle of one side of the 4. The coupling 646 is connected to the stirring module 63 and the discharge module 65 respectively through a coupling. The stirring module 63 includes a rotating shaft 631, which is rotatably connected to the middle of the processing box 4. The outer end of the rotating shaft 631 is connected to the coupling 646 located inside the upper synchronous wheel 642 through a coupling. The outer surface of the rotating shaft 631 is fixedly installed with fixed rings 632 arranged linearly at equal intervals. The outer side of the fixed rings 632 is fixedly installed with bubble crushing mesh plates 633 arranged in a ring shape at equal intervals.

[0017] In the above-described embodiments of this application, during the application of this device, the drive module 64 and the stirring module 63 cooperate to complete the stirring and bubble treatment of wastewater. When the drive module 64 is started, the first motor 643 on the outside of the side frame 641 starts to run, and its output end passes through the side frame 641 to drive the lower synchronous wheel 644 to rotate. Since the upper synchronous wheel 642 and the lower synchronous wheel 644 are connected by a synchronous belt 645, the upper synchronous wheel 642 rotates synchronously. The connecting shaft 646 on the side of the lower synchronous wheel 644 and the upper synchronous wheel 642 near the middle of the treatment tank 4 is connected to the discharge module 65 and the stirring module 63 respectively through a coupling, thereby transmitting power to both. During use, in the stirring module 63, the rotating shaft 631 rotates under the drive of the connecting shaft 646. The inner center of the chamber 4 rotates, and the fixed rings 632 arranged linearly at equal intervals on its outer surface and the bubble crushing mesh plates 633 arranged in a ring shape on the outer side rotate together with the rotating shaft 631. During the rotation, the bubble crushing mesh plates 633 can cut the rising bubbles, prevent the bubbles from merging and forming large bubbles, and increase the contact area between the bubbles and oil particles. At the same time, the rotating bubble crushing mesh plates 633 can also agitate the wastewater, making the oil particles more evenly distributed and improving the binding efficiency between bubbles and oil. This transmission method drives the stirring module 63 and the discharge module 65 simultaneously through a power source, reducing the number of power components in the equipment, simplifying the structure, and the synchronous belt 645 transmission can ensure the coordination of the two actions, ensuring that the stirring and slag discharge processes are carried out simultaneously, and improving the continuity of the overall treatment.

[0018] Example 2 Combination Figures 1-4As shown, the discharge module 65 includes a waste discharge main pipe 651, which is fixedly installed at the bottom of the discharge hopper 61. A slag discharge auger 652 is rotatably connected inside the waste discharge main pipe 651. A slag discharge pipe 653 is fixedly installed at the end of the waste discharge main pipe 651 away from the first motor 643. A slag discharge regulating valve 654 is fixedly installed at the output end of the slag discharge pipe 653. One end of the slag discharge auger 652 is connected to a coupling on the lower synchronous pulley 644 via a coupling. The air flotation module 62, with its ends connected, includes an air supply pipe 621 and an aeration pipe frame 622. The air supply pipe 621 is fixedly installed at the lower back of the treatment box 4, and the aeration pipe frame 622 is fixedly installed inside the treatment box 4, with its lower end tangentially located between the rotating shaft 631 and the discharge hopper 61. The input end of the aeration pipe frame 622 is connected to the output end of the air supply pipe 621. Aeration bubble pipes 623 are fixedly installed at equal intervals along the extension direction of the aeration pipe frame 622 at the bottom of the aeration pipe frame 622. A connecting flange 8 is fixedly installed at the input end of the air supply pipe 621, and a connecting flange 8 is also fixedly installed at the input end of the wastewater addition pipe 7. The oil discharge mechanism 5 includes a floating oil collection hopper 51, which is fixedly installed on the top of the treatment tank 4. The overall side shape of the floating oil collection hopper 51 is an inverted trapezoid. An oil collection frame 52 is fixedly installed on the top of the floating oil collection hopper 51. An oil discharge auger 53 is rotatably connected inside the oil collection frame 52. A second motor 54 is fixedly installed on the side close to the first motor 643. The output end of the second motor 54 is fixedly connected to one end of the oil collecting frame 52 and the oil drain auger 53. An oil drain valve 55 is fixedly installed on the lower end of the side of the oil collecting frame 52 away from the second motor 54. The input end of the oil drain valve 55 is connected to the inside of the oil collecting frame 52. An oil drain pipe 56 is fixedly installed on the output end of the oil drain valve 55. A non-contact liquid level sensor 57 is fixedly installed on the top side of the oil collecting frame 52.

[0019] In the above-described embodiments of the present application, during the application of this device, the discharge module 65, driven by a motor, discharges waste residue. The discharge auger 652 rotates within the waste residue discharge main pipe 651, pushing the waste residue collected in the discharge hopper 61 to the discharge pipe 653. The discharge regulating valve 654 controls the discharge speed and discharge volume, ensuring orderly discharge of waste residue and preventing accumulation that could affect processing. In the air flotation module 62, the air supply pipe 621 connects to the air source via the connecting flange 8, delivering gas to the aeration pipe rack 622. Gas bubbles are then evenly released into the treatment tank 4 via the aeration bubble discharge pipe 623. During the rising process, the bubbles combine with oil particles, providing a foundation for air flotation and enhancing the process. The oil sludge flotation efficiency is improved by using wastewater addition pipe 7 connected to external pipelines via connecting flange 8 to stably transport wastewater and ensure continuous treatment. The oil discharge mechanism 5 is responsible for collecting floating oil sludge. The floating oil collection hopper 51 is inverted trapezoidal, guiding the oil sludge to converge towards the oil collection frame 52 to reduce residue. The non-contact liquid level sensor 57 monitors the oil level. When the set value is reached, the second motor 54 drives the oil discharge auger 53 to rotate, pushing the oil to the oil discharge valve 55 and discharging it through the oil discharge pipe 56. This achieves rapid collection and discharge of oil sludge, avoiding secondary dissolution. The coordinated operation of all parts improves the overall smoothness and efficiency of the treatment, reduces manual intervention, and enhances the ease of operation.

[0020] The working principle and advantages of this utility model are as follows: First, the equipment is installed and fixed. The top frame 3 and the inner treatment box 4 are supported and fixed by the support legs 2 at the four corners of the top of the base plate 1. By setting the support legs 2 and the base plate 1, the overall structure of the equipment can be stabilized during use, avoiding shaking during operation, thus providing a solid foundation for subsequent treatment processes. Next, wastewater is added. The wastewater to be treated is input into the treatment box 4 through the wastewater addition pipe 7. The connecting flange 8 at the input end of the wastewater addition pipe 7 is used to connect to the external water supply pipeline. By setting the connecting flange 8, the sealing of the pipeline connection is enhanced during use, avoiding leakage during wastewater transportation, thus ensuring the stability of wastewater transportation. Then, the air flotation preparation stage begins. The air flotation module 62 starts working. The air supply pipe 621 is connected to the external air pump through the connecting flange 8, which delivers the gas to the aeration pipe frame 622. Then, the aeration bubble discharge pipe 623 at the bottom of the aeration pipe frame 622 discharges bubbles into the treatment box 4. The cooperation of the air supply pipe 621, the aeration pipe frame 622, and the aeration bubble discharge pipe 623 allows for the uniform delivery of air bubbles to the wastewater during use. As the bubbles rise, they contact and adhere to oil particles in the wastewater, thus providing the basic conditions for flotation treatment. After air supply, stirring and bubble treatment are performed. The first motor 643 in the drive module 64 is started. The output of the first motor 643 drives the lower synchronous pulley 644 to rotate, which in turn drives the upper synchronous pulley 642 to rotate synchronously via the synchronous belt 645. The inner shaft 646 of the wheel 642 drives the rotating shaft 631 of the stirring module 63 to rotate through the coupling. The fixing ring 632 on the outer surface of the rotating shaft 631 and the bubble crushing screen 633 on the outer side rotate with the rotating shaft 631. By setting the cooperation between the drive module 64 and the stirring module 63, the bubble crushing screen 633 can cut and break up the rising bubbles during use, preventing the bubbles from merging into large bubbles. At the same time, it stirs up the wastewater, making the oil particles more evenly distributed, thereby increasing the contact opportunity with the bubbles.

[0021] Next, the oil sludge is floated and collected. Oil particles with attached air bubbles have increased buoyancy and float to the top of the treatment tank 4. They are then collected by the floating oil collection hopper 51 into the oil collection frame 52. The floating oil collection hopper 51 is an inverted isosceles trapezoid. Its two sloping sides guide the oil sludge floating at different positions on the top of the treatment tank 4. When the oil sludge floats to the top of the treatment tank 4, it will converge towards the center along the sloping sides of the isosceles trapezoid, preventing the oil sludge from dispersing and remaining on the top of the treatment tank 4. The symmetrical sloping sides of the isosceles trapezoid ensure the uniformity of the oil sludge collection process, preventing oil sludge from accumulating on one side due to inconsistent slopes. The non-contact liquid level sensor 57 monitors the oil level in the oil collection frame 52. When the set value is reached, the second motor 54 is activated, driving... The oil drain auger 53 rotates, pushing the oil to the oil drain valve 55 and then draining it through the oil drain pipe 56. Through the coordinated action of the components of the oil drain mechanism 5, the floating oil sludge can be quickly collected and discharged during use, thus ensuring timely oil draining. Finally, the waste residue is discharged. In the drive module 64, the connecting shaft 646 inside the lower synchronous pulley 644 drives the slag drain auger 652 of the discharge module 65 to rotate in the waste residue discharge main pipe 651 through the coupling, pushing the waste residue deposited at the bottom of the treatment box 4 to the slag discharge pipe 653. The discharge speed and discharge volume are controlled by the slag discharge regulating valve 654. By setting the various structures of the discharge module 65, the waste residue can be discharged in a timely manner during use, avoiding the accumulation of waste residue that affects the treatment effect, thus ensuring the continuous and stable operation of the equipment.

[0022] As can be seen, during the application of this equipment, the oil discharge mechanism 5 is set up, in which the floating oil collection hopper 51 is an inverted trapezoid, and its two symmetrical inclined sides can form a uniform guide for the oil sludge, so that the floating oil sludge can be quickly collected during use and avoid dispersed residue; the oil discharge auger 53 in the oil collection frame 52 directly pushes the oil under the drive of the second motor 54, and with the real-time monitoring of the non-contact liquid level sensor 57, the oil can be discharged quickly and in real time during use without the need for multi-step centralized operation, thereby avoiding secondary dissolution caused by the long-term residence of oil sludge, solving the problem of cumbersome and untimely oil discharge in the prior art. At the same time, by setting up the oil discharge valve 55 and the oil discharge pipe 56, the oil discharge process can be precisely controlled during use, thereby ensuring the controllability of oil discharge; By setting up a stirring module 63, its bubble-crushing mesh plate 633 rotates with the rotating shaft 631, effectively cutting large bubbles into smaller bubbles during use, increasing the contact area between bubbles and oil particles. Simultaneously, the stirring action causes wastewater to flow, resulting in a more uniform distribution of oil particles, thereby improving the bonding efficiency between bubbles and oil. This solves the problems of easy bubble fusion and low bonding efficiency in existing technologies. Furthermore, by setting up a drive module 64, which uses a synchronous belt 645 to drive the stirring module 63 and the discharge module 65 synchronously, the number of power sources can be reduced during use, simplifying the structure and ensuring the coordination of the actions of each component, thus improving overall processing efficiency and continuity. By setting up an air flotation module 62, its aeration bubble discharge pipe 623 evenly discharges bubbles, working in conjunction with the stirring module... The stirring of group 63 enhances the flotation effect during use; the slag discharge auger 652 of the discharge module 65 can promptly discharge waste slag, preventing sedimentation from affecting the treatment effect. Through the coordinated work of various structures, wastewater treatment, oil collection, and waste slag discharge can be carried out continuously during use, thereby improving the overall treatment efficiency and solving the problems of low treatment efficiency and cumbersome use in the existing technology. It also enhances structural stability and operability: the fixed structure of the support leg 2 and the base plate 1 ensures the stability of the equipment operation during use; the setting of the connecting flange 8 improves the sealing and convenience of pipeline connection during use; the setting of the slag discharge regulating valve 654 and the oil discharge valve 55 allows for flexible control of the discharge process during use, thereby adapting to different treatment needs. During the application of this device, the diameter of its waste discharge main pipe 651 is 100-150mm and its length is 300-500mm; the diameter of its slag discharge auger 652 is 90-140mm, and its length is adapted to that of the waste discharge main pipe 651; the diameter of its slag discharge pipe 653 is 80-120mm; the nominal diameter of its slag discharge regulating valve 654 is 80-120mm; the diameter of its air supply pipe 621 is 50-80mm; and the length of its aeration pipe support 622 is 800-1... 200mm in diameter, 300-500mm in width; aeration bubble pipes 623 with a diameter of 20-40mm, numbering 5-8; floating oil collection hopper 51 with an upper bottom side length of 600-1000mm, a lower bottom side length of 400-800mm, and a height of 200-300mm; oil collection frame 52 with a length of 500-900mm, a width of 300-500mm, and a height of 150-250mm; oil drain auger 5... 3. The diameter is 80-120mm, and the length is adapted to the oil collection frame 52; the nominal diameter of the oil drain valve 55 is 60-100mm; the diameter of the oil drain pipe 56 is 60-100mm. Among the electronic components, the first motor 643 is a three-phase asynchronous motor, model Y90S-4, with a power of 1.1kW and a rated speed of 1400r / min; the second motor 54 is a three-phase asynchronous motor, model Y80M1-2, with a power of 0.75kW and a rated speed of 2800r / min; the non-contact liquid level sensor 57 is model LLC200A310, powered by DC24V; the controller is a PLC controller, model S7-1200, installed on the side frame 641 of the processing box 4 near the first motor 643, and connected to the first motor 643, the second motor 54, and the non-contact liquid level sensor 57 by wires, powered by AC220V.

[0023] The scope of protection of this application does not involve improvements to the electronic components of the device or equipment. Therefore, the working principles of each electronic component are not described in detail here. The electronic components in this application are all conventional electronic components used in the prior art. They are all conventional technical means in the prior art, and the application of the prior art is very mature. Therefore, they will not be elaborated here.

[0024] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. An air floatation device for waste water treatment, characterized by comprising: Includes a base plate (1), with support legs (2) fixedly installed at the four corners of the top of the base plate (1), a top frame (3) fixedly installed on the top of the support legs (2), a processing box (4) fixedly installed on the inner side of the top frame (3), an oil discharge mechanism (5) fixedly installed on the top of the processing box (4), an air flotation mechanism (6) fixedly installed at the bottom inside the processing box (4), and a wastewater addition pipe (7) fixedly installed on the upper side of one side of the processing box (4), with the output end of the wastewater addition pipe (7) connected to the inside of the processing box (4); The air flotation mechanism (6) includes a discharge hopper (61), an air flotation module (62), a stirring module (63), a drive module (64), and a discharge module (65). The discharge hopper (61) is fixedly installed at the bottom of the processing tank (4). The discharge module (65) is fixedly installed at the bottom of the discharge hopper (61). The stirring module (63) is rotatably connected to the middle of the processing tank (4). The drive module (64) is fixedly installed on one side of the processing tank (4). The output end of the drive module (64) is connected to the outside of the stirring module (63) and the discharge module (65) respectively. The air flotation module (62) is located between the discharge hopper (61) and the stirring module (63) inside the processing tank (4).

2. The gas floatation device for wastewater treatment according to claim 1, characterized by The drive module (64) includes a side frame (641) and an upper synchronous pulley (642). The side frame (641) is fixedly installed on the lower side of the processing box (4). A first motor (643) is fixedly installed on the outside of the side frame (641). The output end of the first motor (643) passes through the side frame (641) and is fixedly installed with a lower synchronous pulley (644). The upper synchronous pulley (642) is rotatably connected to the middle of the side of the processing box (4) near the first motor (643). The upper synchronous pulley (642) and the lower synchronous pulley (644) are connected by a synchronous belt (645). A coupling (646) is fixedly installed on the middle of the side of the lower synchronous pulley (644) and the upper synchronous pulley (642) near the processing box (4). The coupling (646) is connected to the stirring module (63) and the discharge module (65) respectively through a coupling.

3. The gas floatation device for wastewater treatment according to claim 2, characterized by The stirring module (63) includes a rotating shaft (631), which is rotatably connected to the middle of the processing box (4). The outer end of the rotating shaft (631) is connected to the connecting shaft (646) located inside the upper synchronous wheel (642) via a coupling. Fixed rings (632) are fixedly installed on the outer surface of the rotating shaft (631) in a linear arrangement at equal intervals. Bubble crushing mesh plates (633) are fixedly installed on the outer side of the fixed rings (632) in a ring arrangement at equal intervals.

4. The gas floatation device for wastewater treatment according to claim 2, characterized by The discharge module (65) includes a waste discharge main pipe (651), which is fixedly installed at the bottom of the discharge hopper (61). A slag discharge auger (652) is rotatably connected inside the waste discharge main pipe (651). A slag discharge pipe (653) is fixedly installed at the end of the waste discharge main pipe (651) away from the first motor (643). A slag discharge regulating valve (654) is fixedly installed at the output end of the slag discharge pipe (653). One end of the slag discharge auger (652) is connected to the end of the coupling (646) on the lower synchronous pulley (644) through a coupling.

5. The gas floatation device for wastewater treatment according to claim 4, characterized by The air flotation module (62) includes an air supply pipe (621) and an aeration pipe frame (622). The air supply pipe (621) is fixedly installed on the lower back of the treatment box (4). The aeration pipe frame (622) is fixedly installed inside the treatment box (4) between the rotating shaft (631) and the discharge hopper (61). The input end of the aeration pipe frame (622) is connected to the output end of the air supply pipe (621). Aeration bubble pipes (623) are fixedly installed at equal intervals along the extension direction of the aeration pipe frame (622) at the bottom of the aeration pipe frame (622).

6. The gas floatation device for wastewater treatment according to claim 5, characterized by A connecting flange (8) is fixedly installed at the input end of the air supply pipe (621), and a connecting flange (8) is also fixedly installed at the input end of the wastewater addition pipe (7).

7. The gas floatation device for wastewater treatment according to claim 6, characterized by The oil discharge mechanism (5) includes an upward oil collection bucket (51), which is fixedly installed on the top of the processing tank (4). The overall side shape of the upward oil collection bucket (51) is an inverted trapezoid. An oil collection frame (52) is fixedly installed on the top of the upward oil collection bucket (51). An oil discharge auger (53) is rotatably connected inside the oil collection frame (52). A second motor (543) is fixedly installed on the side of the oil collection frame (52) near the first motor (643). 4) The output end of the second motor (54) is fixedly connected through the oil collecting frame (52) and the oil drain auger (53). An oil drain valve (55) is fixedly installed on the lower end of the side of the oil collecting frame (52) away from the second motor (54). The input end of the oil drain valve (55) is connected to the inside of the oil collecting frame (52). An oil drain pipe (56) is fixedly installed on the output end of the oil drain valve (55). A non-contact liquid level sensor (57) is fixedly installed on the top side of the oil collecting frame (52).

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