Air flotation treatment device used for industrial sewage treatment and capable of discharging floating objects

Abstract

The invention relates to the technical field of sewage treatment, and discloses an air flotation treatment device for industrial sewage treatment and capable of discharging floaters, the air flotation treatment device comprises a bottom plate and a treatment tank fixed on the top surface of the bottom plate, a drainage pipe is fixedly arranged at the lower end of the front side wall of the treatment tank in a penetrating manner, and an aeration mechanism for conveying air to the treatment tank is mounted on the top surface of the bottom plate. According to the air flotation treatment device for industrial sewage treatment and capable of discharging the floating objects, automatic and integrated design of the whole treatment process of the floating objects in sewage is achieved, and floating, collection and solid-liquid separation operation of the floating objects can be completed without manual intervention; the sewage treatment continuity and automation degree are greatly improved, the core problem that an existing device lacks an automatic deslagging mechanism and a synchronous solid-liquid separation function is effectively solved, the problem of treatment interruption caused by floating object aggregation of the existing device is avoided, and the manual operation and maintenance cost is remarkably reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an air flotation treatment device for industrial wastewater treatment that can discharge floating matter. Background Technology

[0002] Industrial production processes generate a large amount of industrial wastewater. Direct discharge of industrial wastewater can cause serious damage to the aquatic ecosystem and also violate relevant environmental protection regulations. Therefore, industrial wastewater treatment has become an indispensable key process in industrial production. Air flotation (AF) technology, as a highly efficient wastewater purification technology, is widely used in industrial wastewater treatment due to its advantages such as high treatment efficiency, small footprint, and simple operation. The core principle of this technology is to introduce air into the wastewater and release it as tiny bubbles using a dissolved air release device. These tiny bubbles come into full contact with and adsorb suspended pollutants and floating matter in the wastewater, making their density less than that of water. As a result, the pollutants and floating matter rise to the surface with the bubbles, forming scum, thus achieving the separation of pollutants from water. However, existing AF devices still have certain shortcomings: 1. Most devices can only make floating objects float to the surface and lack an automated discharge mechanism. For example, the "a sewage treatment flotation device" with application number CN202421772393.3 cannot discharge the floating objects after they float to the surface, causing the floating objects to continuously accumulate on the water surface to form a scum layer, which affects the treatment effect, reduces the continuity of sewage treatment, and increases the cost of manual operation and maintenance. 2. Some devices with slag discharge function lack the function of simultaneous solid-liquid separation during the slag discharge process, resulting in a heavy burden on subsequent treatment. For example, the "air flotation device for sewage treatment" with application number CN202423008872.0 directly discharges the slag. During the discharge of the floating matter, dewatering cannot be performed. A large amount of sewage will be discharged with the floating matter, resulting in a high water content in the floating matter. The slag with high water content is not only large in volume and difficult to transport, but also increases the difficulty and cost of subsequent treatment, reducing the economic efficiency of the overall treatment process. In view of this, and in response to the above problems, we conducted in-depth research and proposed an air flotation treatment device for industrial wastewater treatment that can discharge floating matter. Summary of the Invention

[0003] The purpose of this invention is to provide an air flotation treatment device for industrial wastewater treatment that can discharge floating matter, thereby solving the problem mentioned in the background art that existing air flotation treatment devices lack an automated sludge discharge mechanism and synchronous solid-liquid separation function.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an air flotation treatment device for industrial wastewater treatment that can discharge floating matter, comprising a bottom plate and a treatment tank fixed on its top surface, wherein a drain pipe is fixedly and continuously provided at the lower end of the front side wall of the treatment tank. An aeration mechanism for supplying air to the treatment tank is installed on the top surface of the bottom plate, and a partition is provided on the rear side of the aeration mechanism. The partition is fixedly installed on the inner bottom surface of the treatment tank, and the left and right sides of the partition are fixedly connected to the left and right inner walls of the treatment tank, respectively. A guide plate is fixedly installed on the top surface of the partition. The aeration mechanism is connected to the airflow treatment mechanism installed at the rear end of the top surface of the treatment tank for blowing floating objects. The front end of the top surface of the treatment tank is equipped with a material conveying mechanism for discharging floating objects, and the material conveying mechanism is connected to a pressing mechanism for solid-liquid separation. The pressing mechanism is connected to a pushing treatment mechanism fixedly installed on the top surface of the treatment tank for pushing floating objects. The material conveying mechanism is connected to a cleaning mechanism for self-cleaning. The top surface of the bottom plate is equipped with a return flow mechanism.

[0005] By adopting the above technical solution, it is easy to automatically complete the floating, collection, solid-liquid separation and discharge of floating objects in sewage, which greatly improves the continuity and automation of sewage treatment and reduces the cost of manual operation and maintenance.

[0006] As a preferred embodiment of the present invention, the aeration mechanism includes an air pump, which is fixedly installed on the front end of the top of the base plate, and the air outlet of the air pump is connected to an air supply pipe. The front end of the air supply pipe is fixedly connected to the front end of a connecting pipe, and the connecting pipe is fixedly penetrated through the lower end of the front side wall of the base plate. The rear end of the connecting pipe is fixedly connected to an aeration pipe, and a solenoid valve is provided on the connecting pipe.

[0007] The above technical solution facilitates the generation of high-pressure gas by an air pump, which is then transported to the aeration pipe via an air delivery pipe and connecting pipe. This allows the gas to be evenly released into the wastewater in the form of tiny bubbles. The bubbles fully adsorb suspended pollutants and floating matter, quickly achieving the separation of pollutants by floating.

[0008] As a preferred embodiment of the present invention, the airflow treatment mechanism includes a through pipe, one end of which is fixedly connected to an air supply pipe and an electromagnetic valve is provided on the air supply pipe, and a nozzle is fixedly installed at the other end of the through pipe and the nozzle is fixedly installed at the rear end of the top surface of the treatment tank, and a plurality of air jets are evenly arranged at the rear end of the nozzle.

[0009] By adopting the above technical solution, it is convenient to divert gas through the gas delivery pipe and form a uniform airflow through multiple jet nozzles of the nozzle to blow the floating objects from the rear end of the treatment tank forward, avoiding the floating objects from dispersing and accumulating on the water surface, ensuring that the floating objects are concentrated in the material conveying mechanism area, and improving collection efficiency.

[0010] As a preferred embodiment of the present invention, the conveying mechanism includes two side plates arranged symmetrically on the left and right sides, and the two side plates are respectively fixedly installed on the left and right ends of the rear side of the top surface of the treatment tank. A drive roller is provided through the side plate via a bearing, and a driven roller is provided below the front side of the drive roller. The driven roller passes through the left and right side walls of the treatment tank in sequence via bearings, and the driven roller and the drive roller are connected by a conveyor belt. Water passage holes are evenly opened on the conveyor belt. The left end of the drive roller is keyed to the shaft end of the motor, and the motor is fixedly installed on the surface of the left side plate.

[0011] The above technical solution facilitates the rotation of the active roller by driving the motor, which in turn drives the conveyor belt and the driven roller to operate synchronously. The conveyor belt can collect and transport the concentrated floating objects upwards, and the water holes on the conveyor belt can allow the entrained sewage to quickly seep back, thus achieving the initial dehydration and transport of the floating objects.

[0012] As a preferred embodiment of the present invention, the pressing mechanism includes a pressing roller, which passes through the left and right side walls of the treatment tank in sequence via bearings, and is located above the conveyor belt. The pressing roller is used to press the floating objects conveyed by the conveyor belt. A driven gear is fixedly installed on the surface of the pressing roller, and the driven gear is located on the right side of the treatment tank. The driven gear meshes with a driving gear fixedly installed on the surface of the driven roller.

[0013] By adopting the above technical solution, the rotation of the driven roller can drive the pressure roller to rotate synchronously through the drive gear and the driven gear. The pressure roller applies pressure to the floating objects on the conveyor belt, further squeezing out the water inside the floating objects, realizing deep solid-liquid separation, reducing the water content of the floating objects, and reducing the difficulty of subsequent transportation and disposal.

[0014] As a preferred embodiment of the present invention, the pushing and processing mechanism includes a fixed frame, two of which are symmetrically arranged on the left and right sides, and the two fixed frames are respectively fixedly installed on the upper ends of the left and right side walls of the processing pool. An active rotating rod and a driven rotating rod are arranged from back to front above the processing pool, and the active rotating rod and the driven rotating rod pass through the fixed frames on both sides in sequence through bearings. An active sprocket is fixedly installed on the surface of the active rotating rod, and two active sprockets are symmetrically arranged on the left and right sides. A driven sprocket is fixedly installed on the surface of the driven rotating rod, and two driven sprockets are symmetrically arranged on the left and right sides. The active sprockets and driven sprockets on both sides are connected by chain drive. Multiple push plates are evenly fixedly installed between the two chains. The right end of the active rotating rod is connected to the right end of the pressure roller by a belt drive device.

[0015] By adopting the above technical solution, the rotation of the pressure roller is facilitated by the belt drive to drive the active rotating rod, and then the push plate is moved in a cycle through the transmission of the active sprocket, driven sprocket and chain. The push plate can continuously push the floating objects on the water surface to the surface of the conveyor belt from front to back, ensuring that there are no floating objects left and improving the thoroughness of floating object collection.

[0016] As a preferred embodiment of the present invention, the cleaning mechanism includes a reciprocating screw, which is coaxially fixedly installed at the right end of the drive roller, and a movable plate is sleeved on the outer side of the reciprocating screw. The rotation of the reciprocating screw is used for the reciprocating linear movement of the movable plate, and a cleaning plate is fixedly installed at the lower end of the left side of the movable plate. The cleaning plate slides through the right side plate, and bristles are evenly arranged on the top surface of the cleaning plate. The bristles are in movable contact with the bottom of the conveyor belt.

[0017] By adopting the above technical solution, it is convenient to use the rotation of the active roller to drive the reciprocating screw to rotate synchronously, so that the movable plate drives the cleaning plate to move back and forth. The bristles on the cleaning plate are in close contact with the bottom of the conveyor belt, which can efficiently remove residual impurities and attachments on the conveyor belt, avoid clogging of the water holes, and ensure the continuous and stable operation of the conveyor belt.

[0018] As a preferred embodiment of the present invention, the reflux mechanism includes a water pump, which is fixedly installed on the top surface of the base plate. The water pump's inlet end is fixedly connected to one end of the pumping pipe, and the pumping pipe is fixedly connected to the lower end of the rear side wall of the treatment tank. The water pump's outlet end is fixedly connected to one end of the reflux pipe, and the other end of the reflux pipe is fixedly connected to the upper end of the side wall of the treatment tank. The connection between the reflux pipe and the treatment tank is located on the front side of the partition.

[0019] By adopting the above technical solution, it is convenient to pump out the sewage separated at the back end of the treatment tank through a water pump, and transport it through a return pipe to the treatment area in front of the baffle for a second aeration treatment, thereby improving the sewage purification effect.

[0020] As a preferred embodiment of the present invention, a material collection box is fixedly installed on the rear side of the treatment tank, and a discharge channel is fixedly provided through the lower end of the rear side wall of the material collection box.

[0021] The above technical solution facilitates the centralized collection of floating matter after dehydration conveyed by the conveyor belt, preventing the floating matter from scattering. The discharge channel can easily and quickly export the collected floating matter, which is convenient for subsequent unified disposal and improves the regularity of the overall processing flow.

[0022] As a preferred embodiment of the present invention, a housing is fixedly installed on the right side of the treatment pool, and the driven gear and the driving gear are located inside the housing. The right end of the driven roller is connected to the right inner wall of the housing through a bearing, and the pressing roller passes through the right side wall of the housing through the bearing.

[0023] The above technical solution facilitates the sealing and protection of the driving gear and the driven gear.

[0024] Compared with the prior art, the beneficial effects of the present invention are: the air flotation treatment device for industrial wastewater treatment that can discharge floating matter realizes the automation and integrated design of the entire process of treating floating matter in wastewater. It can complete the floating, collection and solid-liquid separation of floating matter without manual intervention, which greatly improves the continuity and automation of wastewater treatment. It effectively solves the core problem of existing devices lacking an automated slag discharge mechanism and synchronous solid-liquid separation function, avoids the problem of treatment interruption caused by the accumulation of floating matter in existing devices, and significantly reduces the cost of human operation and maintenance. 1. By starting the air pump, microbubbles are evenly released into the sewage through the air supply pipe and the aeration pipe, which can quickly separate suspended pollutants and floating objects. When used with the pipe, the nozzle blows a directional airflow backward, which can efficiently concentrate the floating objects to the guide plate for discharge, avoiding the dispersion and agglomeration of floating objects and affecting the treatment effect. 2. By starting the motor, the drive roller rotates, which in turn drives the conveyor belt and driven roller to run synchronously. The conveyor belt transports the floating objects. During the transport of the floating objects, the water holes on the conveyor belt help to dehydrate the floating objects initially. At the same time, when the driven roller rotates, the action of the drive gear and the driven gear causes the pressure roller to rotate synchronously, which deeply compresses and dehydrates the floating objects. This achieves synchronous solid-liquid separation during the slag discharge process, which significantly reduces the water content of the floating objects and effectively reduces the difficulty and cost of subsequent transfer and disposal. 3. When the pressure roller rotates, it drives the active rotating rod to rotate through the belt drive device, so that the push plate moves in a cycle through the transmission of the active sprocket, driven sprocket and chain. During the cycle of the push plate, floating objects on the water surface can be thoroughly pushed to the surface of the conveyor belt, ensuring that there are no floating objects left, and greatly improving the thoroughness of floating object collection. 4. When the drive roller rotates, it drives the reciprocating screw to rotate synchronously, which causes the movable plate to drive the cleaning plate and brush to move back and forth synchronously, thus cleaning the conveyor belt. This prevents the water holes from being blocked by residual impurities, which would affect the stable operation of the device and extend the service life of the equipment. 5. By starting the water pump, the separated wastewater can be extracted through the pumping pipe and transported to the treatment area for secondary aeration through the return pipe, which further improves the wastewater purification effect and ensures the quality of the effluent. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the front view structure of the present invention; Figure 2 This is a schematic diagram of the rear side view of the present invention; Figure 3 This is a schematic diagram of the cross-sectional connection structure between the base plate and the treatment tank of the present invention; Figure 4 This is a schematic diagram of the connection structure between the treatment tank and the side plate of the present invention; Figure 5 This is a schematic diagram of the connection structure between the housing, the driven roller, and the pressure roller of the present invention; Figure 6 This is a schematic diagram of the connection structure between the conveyor belt, the driving roller, and the driven roller of the present invention; Figure 7 This is a schematic diagram of the connection structure between the driving gear and the driven gear of the present invention; Figure 8 This is a schematic diagram of the connection structure between the belt drive device, the pressure roller, and the drive rod of the present invention; Figure 9 This is a schematic diagram of the connection structure between the movable plate, the reciprocating lead screw, and the cleaning plate of the present invention; Figure 10 This is a schematic diagram of the cross-sectional connection structure between the material collection box and the discharge channel of the present invention.

[0026] In the diagram: 1. Base plate; 2. Treatment tank; 3. Drainage pipe; 4. Air pump; 5. Air supply pipe; 6. Connecting pipe; 7. Aeration pipe; 8. Baffle plate; 9. Guide plate; 10. Through pipe; 11. Spray pipe; 12. Side plate; 13. Driven roller; 14. Driven roller; 15. Conveyor belt; 16. Motor; 17. Pressure roller; 18. Driven gear; 19. Driven gear; 20. Housing; 21. Fixing frame; 22. Driven rotating rod; 23. Driven rotating rod; 24. Chain; 25. Push plate; 26. Belt drive device; 27. Reciprocating screw; 28. Movable plate; 29. ​​Cleaning plate; 30. Brush; 31. Water pump; 32. Water suction pipe; 33. Return pipe; 34. Collection box; 35. Discharge channel; 36. Driven sprocket; 37. Driven sprocket. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 - Figure 10The technical solution of this invention is as follows: A flotation treatment device for industrial wastewater treatment that can discharge floating matter includes a base plate 1 and a treatment tank 2 fixed on its top surface. A PLC controller for controlling various electrical devices is installed on the base plate 1. A drain pipe 3 is fixedly installed through the lower end of the front side wall of the treatment tank 2, and a valve is installed on the drain pipe 3. An aeration mechanism for supplying air to the treatment tank 2 is installed on the top surface of the base plate 1, and a partition 8 is provided on the rear side of the aeration mechanism. The partition 8 is fixedly installed on the inner bottom surface of the treatment tank 2, and the left and right sides of the partition 8 are respectively connected to the bottom surface of the treatment tank 2. The left and right inner walls of the treatment tank 2 are fixedly connected. A guide plate 9 is fixedly installed on the top surface of the partition plate 8. The aeration mechanism is connected to the airflow treatment mechanism installed at the rear end of the top surface of the treatment tank 2 for blowing floating objects. A conveying mechanism for discharging floating objects is installed at the front end of the top surface of the treatment tank 2. The conveying mechanism is connected to the pressing mechanism for solid-liquid separation. The pressing mechanism is connected to the pushing treatment mechanism fixedly installed on the top surface of the treatment tank 2 for pushing floating objects. The conveying mechanism is connected to the cleaning mechanism for self-cleaning. A return mechanism is installed on the top surface of the bottom plate 1.

[0029] The aeration mechanism includes an air pump 4, which is fixedly installed on the front end of the top of the base plate 1. An air supply pipe 5 is connected to the air outlet of the air pump 4. The front end of the air supply pipe 5 is fixedly connected to the front end of the connecting pipe 6. The connecting pipe 6 is fixedly installed through the lower end of the front side wall of the base plate 1. An aeration pipe 7 is fixedly installed at the rear end of the connecting pipe 6. A solenoid valve is installed on the connecting pipe 6.

[0030] The airflow treatment mechanism includes a pipe 10, one end of which is fixedly connected to an air supply pipe 5 and a solenoid valve is provided on the air supply pipe 5. The other end of the pipe 10 is fixedly installed with a nozzle 11, which is fixedly installed at the rear end of the top surface of the treatment tank 2. Multiple air jets are evenly arranged at the rear end of the nozzle 11.

[0031] The material conveying mechanism includes two side plates 12 arranged symmetrically on the left and right sides. The two side plates 12 are fixedly installed on the left and right ends of the rear side of the top surface of the treatment tank 2, respectively. A drive roller 13 is installed through the side plate 12 via bearings. A driven roller 14 is installed below the front side of the drive roller 13. The driven roller 14 passes through the left and right side walls of the treatment tank 2 in sequence via bearings. The driven roller 14 and the drive roller 13 are connected by a conveyor belt 15. Water passage holes are evenly opened on the conveyor belt 15. The conveyor belt 15 is located below the guide plate 9. The left end of the drive roller 13 is keyed to the shaft end of the motor 16. The motor 16 is fixedly installed on the surface of the left side plate 12.

[0032] The pressing mechanism includes a pressing roller 17, which is located behind the guide plate 9. The pressing roller 17 passes through the left and right side walls of the treatment tank 2 in sequence through bearings, and is located above the conveyor belt 15. The pressing roller 17 is used to press the floating objects conveyed by the conveyor belt 15. A driven gear 18 is fixedly installed on the surface of the pressing roller 17, and the driven gear 18 is located on the right side of the treatment tank 2. The driven gear 18 meshes with the driving gear 19 fixedly installed on the surface of the driven roller 14. A housing 20 is fixedly installed on the right side of the treatment tank 2, and the driven gear 18 and the driving gear 19 are located inside the housing 20. The right end of the driven roller 14 is connected to the right inner wall of the housing 20 through a bearing, and the pressing roller 17 passes through the right side wall of the housing 20 through the bearing.

[0033] The pushing and processing mechanism includes two fixed frames 21 arranged symmetrically on the left and right sides, and the two fixed frames 21 are respectively fixedly installed on the upper ends of the left and right side walls of the processing pool 2. A driving rotating rod 22 and a driven rotating rod 23 are arranged from back to front above the processing pool 2. Both the driving rotating rod 22 and the driven rotating rod 23 pass through the fixed frames 21 on both sides in sequence through bearings. A driving sprocket 36 is fixedly installed on the surface of the driving rotating rod 22, and two driving sprockets 36 are arranged symmetrically on the left and right sides. A driven sprocket 37 is fixedly installed on the surface of the driven rotating rod 23, and two driven sprockets 37 are arranged symmetrically on the left and right sides. The driving sprockets 36 and driven sprockets 37 on both sides are connected by a chain 24. Multiple push plates 25 are evenly fixedly installed between the two chains 24. The right end of the driving rotating rod 22 is connected to the right end of the pressure roller 17 by a belt drive device 26.

[0034] The cleaning mechanism includes a reciprocating screw 27, which is coaxially fixedly installed at the right end of the drive roller 13. A movable plate 28 is sleeved on the outer side of the reciprocating screw 27. The rotation of the reciprocating screw 27 is used for the reciprocating linear movement of the movable plate 28. A cleaning plate 29 is fixedly installed at the lower left side of the movable plate 28. The cleaning plate 29 slides through the right side plate 12. Brush bristles 30 are evenly arranged on the top surface of the cleaning plate 29. The brush bristles 30 are in movable contact with the bottom of the conveyor belt 15.

[0035] The reflux mechanism includes a water pump 31, which is fixedly installed on the top surface of the base plate 1. The water inlet end of the water pump 31 is fixedly connected to one end of the pump pipe 32, and the pump pipe 32 is fixedly connected to the lower end of the rear side wall of the treatment tank 2. The water outlet end of the water pump 31 is fixedly connected to one end of the reflux pipe 33, and the other end of the reflux pipe 33 is fixedly connected to the upper end of the side wall of the treatment tank 2. The connection between the reflux pipe 33 and the treatment tank 2 is located in front of the partition plate 8.

[0036] A collection box 34 is fixedly installed on the rear side of the treatment tank 2, and a discharge channel 35 is fixedly provided through the lower end of the rear side wall of the collection box 34. The collection box 34 is used to receive floating objects conveyed by the conveyor belt 15.

[0037] Working principle: When in use, industrial wastewater is first injected into treatment tank 2. Then, the PLC controller on the base plate 1 starts the electrical equipment. First, the air pump 4 is started. The high-pressure gas generated by the air pump 4 is transported through the air pipe 5. At this time, the solenoid valve on the connecting pipe 6 is opened, and the gas enters the aeration pipe 7 through the connecting pipe 6. The aeration pipe 7 releases the gas evenly into the wastewater in the treatment tank 2 in the form of tiny bubbles. The bubbles fully adsorb the suspended pollutants and floating objects in the wastewater. The buoyancy makes the pollutants and floating objects float to the water surface with the bubbles. When the solenoid valve on the pipe 10 is opened, some gas enters the nozzle 11 through the pipe 10. The nozzle 11 blows a directional airflow backward through multiple evenly distributed jet nozzles at the front end. Together with the guide plate 9 on the top surface of the baffle 8, it pushes the floating objects upward toward the area where the conveyor belt 15 is located, so as to avoid the floating objects from being dispersed and gathered on the water surface and improve the collection efficiency. At the same time, the motor 16 is started, and the motor 16 drives the active roller 13 to rotate. The active roller 13 drives the driven roller 14 to run synchronously through the conveyor belt 15. The conveyor belt 15 receives and transports the collected floating objects. The water passage holes evenly opened on its surface can allow the sewage carried by the floating objects to quickly seep back to the treatment tank 2, so as to achieve the initial dewatering of the floating objects. When the driven roller 14 rotates, the driving gear 19 fixed on its surface drives the meshing driven gear 18 to rotate, and the driven gear 18 in turn drives the pressure roller 17 to rotate synchronously. The pressure roller 17 applies pressure to the floating matter during the conveying process, further squeezing out the internal water, completing deep solid-liquid separation, and effectively reducing the water content of the floating matter. While the pressure roller 17 rotates, it drives the active rotating rod 22 to rotate through the belt drive device 26. The two active sprockets 36 on the surface of the active rotating rod 22 drive the two driven sprockets 37 on the surface of the driven rotating rod 23 to rotate synchronously through the chain 24. This causes the multiple push plates 25 between the two chains 24 to move in a cycle. The push plates 25 continuously push the floating objects remaining on the water surface to the surface of the conveyor belt 15 from front to back, ensuring that there are no floating objects left and improving the thoroughness of collection. When the drive roller 13 rotates, it will also drive the coaxially fixed reciprocating screw 27 to rotate synchronously. The reciprocating screw 27 drives the outer sleeved movable plate 28 to move back and forth. The movable plate 28 drives the cleaning plate 29 and the brush 30 on the top surface to move synchronously. The brush 30 is in close contact with the bottom of the conveyor belt 15, effectively removing the impurities and attachments remaining on the conveyor belt 15, avoiding the blockage of the water passage, and ensuring the continuous and stable operation of the conveyor belt 15. After dehydration, the floating matter is conveyed by conveyor belt 15 to the collection box 34 on the rear side of the treatment tank 2, and then discharged through the discharge channel 35 at the lower end of the rear side wall of the collection box 34 for subsequent unified disposal. By starting the water pump 31, the water pump 31 draws the sewage separated at the rear end of the treatment tank 2 through the water pumping pipe 32, and transports it to the treatment area in front of the baffle 8 through the return pipe 33 for aeration treatment again, further improving the sewage purification effect. After the sewage treatment meets the standards, the valve on the drain pipe 3 is opened to discharge the purified sewage, completing the entire industrial sewage flotation treatment process.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An air flotation treatment device for industrial wastewater treatment that can discharge floating matter, comprising a base plate (1) and a treatment tank (2) fixed to its top surface, wherein a drain pipe (3) is fixedly provided through the lower end of the front side wall of the treatment tank (2), characterized in that: An aeration mechanism for supplying air to the treatment tank (2) is installed on the top surface of the bottom plate (1), and a partition plate (8) is provided on the rear side of the aeration mechanism. The partition plate (8) is fixedly installed on the inner bottom surface of the treatment tank (2), and the left and right sides of the partition plate (8) are fixedly connected to the left and right inner walls of the treatment tank (2) respectively. A guide plate (9) is fixedly installed on the top surface of the partition plate (8). The aeration mechanism is connected to the airflow treatment mechanism installed at the rear end of the top surface of the treatment tank (2) for blowing floating objects. The front end of the top surface of the treatment tank (2) is equipped with a material conveying mechanism for discharging floating objects, and the material conveying mechanism is connected to a pressing mechanism for solid-liquid separation. The pressing mechanism is connected to a pushing treatment mechanism fixedly installed on the top surface of the treatment tank (2) for pushing floating objects. The material conveying mechanism is connected to a cleaning mechanism for self-cleaning. The top surface of the bottom plate (1) is equipped with a return mechanism.

2. The air flotation treatment device for industrial wastewater treatment according to claim 1, which can discharge floating matter, is characterized in that, The aeration mechanism includes an air pump (4), which is fixedly installed on the front end of the top of the base plate (1). An air supply pipe (5) is connected to the air outlet of the air pump (4). The front end of the air supply pipe (5) is fixedly connected to the front end of the connecting pipe (6). The connecting pipe (6) is fixedly penetrated through the lower end of the front side wall of the base plate (1). An aeration pipe (7) is fixedly installed at the rear end of the connecting pipe (6). A solenoid valve is installed on the connecting pipe (6).

3. The air flotation treatment device for industrial wastewater treatment according to claim 2, which can discharge floating matter, is characterized in that, The airflow treatment mechanism includes a through pipe (10), one end of which is fixedly connected to the air supply pipe (5), and an electromagnetic valve is provided on the air supply pipe (5). The other end of the through pipe (10) is fixedly installed with a nozzle (11), and the nozzle (11) is fixedly installed at the rear end of the top surface of the treatment tank (2). Multiple air jets are evenly arranged at the rear end of the nozzle (11).

4. The flotation treatment device for industrial wastewater treatment according to claim 1, which can discharge floating matter, is characterized in that, The material conveying mechanism includes two side plates (12), which are arranged symmetrically on the left and right sides. The two side plates (12) are fixedly installed on the left and right ends of the rear side of the top surface of the treatment tank (2). A drive roller (13) is installed on the side plate (12) through a bearing. A driven roller (14) is installed below the front side of the drive roller (13). The driven roller (14) passes through the left and right side walls of the treatment tank (2) through the bearing in sequence. The driven roller (14) and the drive roller (13) are connected by a conveyor belt (15). Water passage holes are evenly opened on the conveyor belt (15). The left end of the drive roller (13) is keyed to the shaft end of the motor (16). The motor (16) is fixedly installed on the surface of the left side plate (12).

5. The air flotation treatment device for industrial wastewater treatment according to claim 4, which is characterized in that, The pressing mechanism includes a pressing roller (17), which passes through the left and right side walls of the treatment tank (2) sequentially via bearings, and is located above the conveyor belt (15). The pressing roller (17) is used to press the floating objects conveyed by the conveyor belt (15). A driven gear (18) is fixedly installed on the surface of the pressing roller (17), and the driven gear (18) is located on the right side of the treatment tank (2). The driven gear (18) meshes with the driving gear (19) fixedly installed on the surface of the driven roller (14).

6. The air flotation treatment device for industrial wastewater treatment according to claim 5, which is characterized in that, The pushing and processing mechanism includes two fixed frames (21), which are arranged symmetrically on the left and right sides. The two fixed frames (21) are respectively fixedly installed on the upper ends of the left and right side walls of the processing pool (2). An active rotating rod (22) and a driven rotating rod (23) are arranged from back to front above the processing pool (2). The active rotating rod (22) and the driven rotating rod (23) pass through the fixed frames (21) on both sides in sequence through bearings. An active sprocket (36) is fixedly installed on the surface of the active rotating rod (22). Two drive sprockets (36) are arranged symmetrically on the left and right. A driven sprocket (37) is fixedly installed on the surface of the driven rotating rod (23). Two driven sprockets (37) are arranged symmetrically on the left and right. The drive sprockets (36) and driven sprockets (37) on the left and right sides are connected by chains (24). Multiple push plates (25) are evenly fixedly installed between the two chains (24). The right end of the drive rotating rod (22) is connected to the right end of the pressure roller (17) by a belt drive device (26).

7. The air flotation treatment device for industrial wastewater treatment according to claim 4, which is characterized in that, The cleaning mechanism includes a reciprocating screw (27), which is coaxially fixedly installed on the right end of the drive roller (13). A movable plate (28) is sleeved on the outside of the reciprocating screw (27). The rotation of the reciprocating screw (27) is used for the reciprocating linear movement of the movable plate (28). A cleaning plate (29) is fixedly installed on the lower left side of the movable plate (28). The cleaning plate (29) slides through the right side plate (12). Brush bristles (30) are evenly arranged on the top surface of the cleaning plate (29). The brush bristles (30) are in movable contact with the bottom of the conveyor belt (15).

8. The air flotation treatment device for industrial wastewater treatment according to claim 1, which is capable of discharging floating matter, is characterized in that, The reflux mechanism includes a water pump (31), which is fixedly installed on the top surface of the base plate (1). The water inlet of the water pump (31) is fixedly connected to one end of the pump pipe (32), and the pump pipe (32) is fixedly connected to the lower end of the rear side wall of the treatment tank (2). The water outlet of the water pump (31) is fixedly connected to one end of the reflux pipe (33), and the other end of the reflux pipe (33) is fixedly connected to the upper end of the side wall of the treatment tank (2). The connection between the reflux pipe (33) and the treatment tank (2) is located in front of the partition plate (8).

9. A flotation treatment device for industrial wastewater treatment according to claim 1, characterized in that, A material collection box (34) is fixedly installed on the rear side of the treatment pool (2), and a discharge channel (35) is fixedly provided through the lower end of the rear side wall of the material collection box (34).

10. A flotation treatment device for industrial wastewater treatment according to claim 5, characterized in that, The right side of the treatment pool (2) is fixedly installed with a housing (20), and the driven gear (18) and the driving gear (19) are located inside the housing (20). The right end of the driven roller (14) is connected to the right inner wall of the housing (20) through a bearing, and the pressing roller (17) passes through the right side wall of the housing (20) through a bearing.

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