Aeration device for sewage treatment

Abstract

The invention relates to the technical field of sewage treatment, in particular to an aeration device for sewage treatment, which comprises an aerator, an adjusting unit for adjusting the aeration rate according to the water quantity, and a treatment unit for cleaning and collecting scum on the water surface, the adjusting unit comprises an outer pipe for supplying air to the aeration machine, an inner pipe and an air inlet piece for controlling the inner pipe to supply air to the outer pipe. According to the invention, through the arrangement of the lower floating plate, the upper floating plate and the connecting floating plate, the inner pipe is driven to adjust the height, the situation that when the water level is relatively low, the air inlet pipe of the aerator is exposed and shakes under the influence of wind power in strong wind weather to cause damage is avoided, and meanwhile, the aeration rate of the aerator can be naturally adjusted according to the water quantity without manual adjustment, so that the aerator is more convenient; as the lower floating plate, the upper floating plate and the connecting floating plate float on the water surface, scum on the water surface can be collected and treated, meanwhile, leaves blown to the water surface in strong wind weather can be collected and treated, and the use effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to an aeration device for sewage treatment. Background Art

[0002] Sewage treatment refers to the process of purifying sewage so that it meets the water quality requirements for discharge into a certain water body or reuse. This process is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering. Aeration equipment is a key equipment in sewage treatment technology, especially in water biological pretreatment and sewage biological treatment. Its main function is to transfer oxygen in the air to the liquid in the aeration tank through the aeration device to supply the oxygen required for the metabolism of aerobic organisms, and to fully and evenly mix the water in the tank to achieve the purpose of biological treatment.

[0003] The invention with application number CN202310818370.5 discloses an efficient sewage treatment aeration device, which belongs to the field of sewage treatment technology, including an aeration tank and an oxygen generator, a round box is installed at the bottom of the aeration tank, a cross tube is arranged inside the aeration tank, the inside of the round box is rotatably connected with a support tube, and the top of the support tube passes through the aeration tank and is fixedly connected to the inside of the cross tube. This invention can introduce oxygen into the aeration tank in a high-pressure manner. The high-pressure airflow usually impacts the liquid surface at a high speed to produce larger bubbles or gas-liquid interfaces, thereby increasing the gas-liquid contact area, ensuring the oxygen utilization rate, reducing waste, and being more energy-efficient. In addition, each high-pressure impact is intermittent, and the high pressure can be used to impact the aeration head during each oxygen introduction process to reduce the occurrence of debris residue and blockage. At the same time, the used oxygen can be reused to drive the aeration head to move, increase the aeration range, and further improve the aeration effect.

[0004] However, this patent cannot automatically adjust the required aeration volume according to the amount of sewage in the aeration tank. If the amount of water in the sewage tank is small and the aeration volume is not adjusted, excessive aeration volume may cause the dissolved oxygen concentration in the mixed liquid in the aeration tank to be too high, exceeding the optimal range required for biological treatment.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0006] The object of the present invention is to provide an aeration device for sewage treatment which can effectively solve the above technical problems.

[0007] In order to achieve the purpose of the present invention, the following technical scheme is adopted: An aeration device for sewage treatment, comprising: an aerator, a regulating unit for regulating the aeration amount according to the water amount, and a processing unit for cleaning and collecting scum on the water surface; The regulating unit comprises: an outer tube for supplying air to the aerator, an inner tube, and an air intake member for controlling the inner tube to intake air into the outer tube; The air intake member comprises: a fixed block fixedly connected to the inner tube, an air intake plate 2 fixedly connected to the fixed block, an air intake plate 1 rotatably mounted on the fixed block, and air intake holes arranged on the air intake plate 1 and the air intake plate 2 around the axis of the air intake plate 1, and the air intake plate 1 is fixedly connected to a connecting shaft; The inner wall of the outer tube is provided with a guide groove for guiding the air intake plate to rotate, and the connecting shaft is slidably connected to the inner wall of the guide groove; the guide groove is arc-shaped.

[0008] Furthermore, the processing unit includes: a connecting floating plate that drives the inner tube to rise and fall with the water surface, a lower floating plate fixedly connected to the connecting floating plate, and an upper floating plate slidably installed on the lower floating plate.

[0009] Furthermore, the surface of the lower floating plate is rotatably connected to a winding roller, a filter screen wound on the winding roller, a unwinding roller connected to the filter screen, a pressure roller for adjusting the surface tension of the filter screen, a connecting plate fixedly connected to one side of the lower floating plate, a limiting groove provided on the connecting plate, a rotating cylinder rotatably connected to the lower floating plate, a collecting plate fixedly connected to the rotating cylinder, a cleaning part for cleaning the filter screen, and an elastic connecting rod fixedly connected to the cleaning part; the pressure roller is mounted on the connecting plate.

[0010] Furthermore, the unwinding roller is located inside the connecting plate, and a cam is fixedly mounted on one end of the unwinding roller.

[0011] Furthermore, a guide groove is provided on the inner wall surface of the rotating cylinder, and the guide groove is composed of an arc guide segment and a straight guide segment connected in sequence.

[0012] Furthermore, the cleaning member is arranged at an angle, and a cleaning brush is provided on a side of the cleaning member that contacts the filter screen.

[0013] Furthermore, a connecting block is fixedly installed on one side surface of the upper floating plate close to the connecting plate, a guide block is fixedly installed on one side surface of the upper floating plate close to the lower floating plate, and collecting rods are connected to the upper floating plate at equal intervals.

[0014] Furthermore, the upper floating plate is slidably connected to the limiting groove via a connecting block, and the surface of the guide block is fixedly connected to the limiting block.

[0015] Furthermore, the connecting floating plate is fixedly installed on the inner tube, a slide groove is provided on the surface of the connecting floating plate, a connecting rod for driving the upper floating plate to move is slidably connected to the slide groove surface, an air inlet is fixedly installed on the connecting floating plate, and an electric telescopic rod is fixedly installed on the air inlet.

[0016] Furthermore, the connecting rod is fixedly connected to the upper floating plate, and one end of the electric telescopic rod is fixedly connected to the connecting rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention discloses an aeration device for sewage treatment. The lower floating plate, the upper floating plate and the connecting floating plate are arranged to drive the inner tube to adjust the height, so as to avoid that when the water level is low, the air inlet pipe of the aerator is exposed to the outside and is shaken and damaged by the wind in windy weather. At the same time, the aeration amount of the aerator can be naturally adjusted according to the water volume without manual adjustment, which is more convenient. Since the lower floating plate, the upper floating plate and the connecting floating plate float on the water surface, the scum on the water surface can be collected and processed. At the same time, the leaves blown to the water surface in windy weather can be collected and processed, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] Figure 1 A schematic diagram of an aeration device for sewage treatment according to the present invention; Figure 2 This is a schematic diagram of the cooperation between the outer tube and the inner tube of an aeration device for sewage treatment according to the present invention; Figure 3 This is a schematic diagram of the cooperation between the air inlet plate 1 and the air inlet plate 2 of an aeration device for sewage treatment according to the present invention; Figure 4 This is a schematic diagram of a lower floating plate of an aeration device for sewage treatment according to the present invention; Figure 5 A schematic diagram of the cooperation between a rotating drum and a collecting plate of an aeration device for sewage treatment according to the present invention; Figure 6 A schematic diagram of the cooperation between an unwinding roller and a cam of an aeration device for sewage treatment according to the present invention; Figure 7 A schematic diagram of a cleaning component of an aeration device for sewage treatment according to the present invention; Figure 8 This is a schematic diagram of the cooperation between the upper floating plate and the lower floating plate of an aeration device for sewage treatment of the present invention; Fig. 9 This is a schematic diagram of a guide block of an aeration device for sewage treatment according to the present invention; Fig.10 The invention relates to an aeration device for sewage treatment Figure 4 The enlarged schematic diagram at A in the middle; Fig.11 The invention relates to an aeration device for sewage treatment Figure 8 The enlarged schematic diagram of point B in the middle; Fig.12 A schematic diagram of a connection floating plate of an aeration device for sewage treatment according to the present invention; Fig.13 The present invention is a schematic diagram of a waterwheel of an aeration device for sewage treatment.

[0020] In the figure: 1, aerator; 2, regulating unit; 21, outer tube; 22, guide groove; 23, connecting shaft; 24, air inlet plate 1; 25, fixing block; 26, air inlet plate 2; 27, air inlet hole; 28, inner tube; 3, processing unit; 31, lower floating plate; 311, winding roller; 312, filter screen; 313, unwinding roller; 3131, cam; 314, pressure roller; 315, connecting plate; 316, Limiting groove; 317, rotating cylinder; 3171, guide groove; 318, collecting plate; 319, cleaning member; 3191, cleaning brush; 3110, elastic connecting member; 32, upper floating plate; 321, connecting block; 322, guide block; 3221, limiting block; 323, collecting rod; 33, connecting floating plate; 331, slide groove; 332, connecting rod; 333, air inlet; 334, electric telescopic rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0022] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] like Figures 1 to 13 As shown, the present invention is an aeration device for sewage treatment, comprising: an aerator 1, a regulating unit 2 for regulating the aeration amount according to the water volume, and a processing unit 3 for cleaning and collecting scum on the water surface; due to the influence of the natural environment, in the case of heavy wind and rain, the water volume in the aeration tank increases, and the specific total increase cannot be accurately calculated manually, and at this time, the aeration treatment effect of the aerator 1 on the sewage decreases. In this application, the aerator 1 is manually installed at the bottom of the aeration tank, and the air inlet end of the aerator 1 floats on the water surface under the action of the processing unit 3, and the air intake of the aerator 1 is adjusted according to the different heights of the water surface, so that there is no need for manual intervention to adjust the aeration amount, and the processing unit 3 floats on the water surface, and can collect leaves that fall on the water surface in windy and rainy weather to avoid affecting the sewage treatment effect.

[0024] The regulating unit 2 comprises: an outer tube 21 for supplying air to the aerator 1 , an inner tube 28 , and an air intake member for controlling the air intake from the inner tube 28 to the outer tube 21 ; the aerator 1 is flange-connected to the outer tube 21 .

[0025] The air intake member includes: a fixed block 25 fixedly connected to the inner tube 28, an air intake plate 26 fixedly connected to the fixed block 25, an air intake plate 1 24 rotatably mounted on the fixed block 25, and air intake holes 27 arranged on the air intake plate 1 24 and the air intake plate 2 26 around the axis of the air intake plate 1 24, and the air intake plate 1 24 is fixedly connected to a connecting shaft 23; the inner wall of the outer tube 21 is provided with a guide groove 22 for guiding the rotation of the air intake plate 1 24, and the connecting shaft 23 and the guide groove 2 2 is slidably connected to the inner wall of the outer tube 21; the guide groove 22 is arc-shaped and opened along the inner wall of the outer tube 21, and the connecting float 33 is fixedly installed on the inner tube 28. When the water level in the aeration tank rises, the inner tube 28 rises with the water level under the action of the connecting float 33. At this time, the connecting shaft 23 moves along the guide groove 22 and drives the air inlet plate 1 24 to rotate, so that the air inlet plate 1 24 coincides with the air inlet hole 27 on the air inlet plate 26, so that the ventilation area becomes larger, the ventilation amount becomes more, and the aeration amount is increased.

[0026] It should be noted here that Figure 2 It can be seen that the guide groove 22 is spirally lifted along the inner wall of the outer tube 21. Therefore, when the inner tube 28 rises, the air intake plate 24 rotates. This can not only adjust the air intake volume, but also the inner tube 28 rises and falls inside the outer tube 21, which can adjust the overall length of the inner tube 28 and the outer tube 21, thereby preventing the inner tube 28 from being exposed too much outside the water surface when the water level is low, thereby increasing the risk of damage to the inner tube 28.

[0027] The processing unit 3 includes: a connecting floating plate 33 that drives the inner tube 28 to rise and fall with the water surface, a lower floating plate 31 fixedly connected to the connecting floating plate 33, and an upper floating plate 32 slidably installed on the lower floating plate 31. Two groups of upper floating plates 32 and lower floating plates 31 are arranged on both sides of the connecting floating plate 33, so that the processing unit 3 has greater buoyancy on the water surface, ensuring that the aerator 1 can stably intake air.

[0028] The surface of the lower floating plate 31 is rotatably connected with a winding roller 311, a filter screen 312 wound on the winding roller 311, a winding roller 313 connected to the filter screen 312, a pressure roller 314 for adjusting the surface tension of the filter screen 312, a connecting plate 315 fixedly connected to one side of the lower floating plate 31, a limiting groove 316 provided on the connecting plate 315, a cleaning member 319 for cleaning the filter screen 312, and an elastic connecting rod 332 fixedly connected to the cleaning member 319; the pressure roller 314 is installed on the connecting plate 315, a water inlet is provided on one side of the upper floating plate 32 and the lower floating plate 31, and the winding roller 311 is rotatably connected to the lower floating plate 31 through a torsion spring, such as Fig.13As shown, a water wheel is installed at the water inlet of the lower floating plate 31, and a power source is installed at one end of the unwinding roller 313. The power source drives the water wheel to rotate through the transmission belt and the transmission gear, and the scum on the water surface is sent to the inside of the lower floating plate 31, and the scum is filtered through the filter screen 312 inside the lower floating plate 31. At the same time, because the power source continuously drives the water wheel to rotate, the unwinding roller 313 continuously releases the filter screen 312, and at the same time, the winding roller 311 rotates under the action of the torsion spring to wind and rewind the filter screen 312. Finally, after the filter screen 312 on the surface of the unwinding roller 313 is completely released, the power source is started to drive the unwinding roller 313 to reverse, so that the filter screen 312 is wound around the surface of the unwinding roller 313, and under the pulling force of the filter screen 312, the winding roller 311 is driven to rotate. 11 rotates, and at the same time, the torsion spring is deformed by force, so that the winding roller 311 can collect the filter screen 312 under the action of the torsion spring later, and when the filter screen 312 is wound between the winding roller 311 and the unwinding roller 313, the cleaning member 319 can clean the surface of the filter screen 312. In addition, a cleaning brush 3191 is provided on the side of the cleaning member 319 that contacts the filter screen 312, and the cleaning brush 3191 can improve the cleaning effect of the filter screen 312; and the inclined setting of the cleaning member 319 can make the impurities on the filter screen 312 move along the inclined surface of the cleaning member 319 from the upper end to the lower end when the cleaning member 319 cleans the filter screen 312, so that the cleaned impurities have a centralized outlet, and the sewage discharge effect is good.

[0029] What needs to be explained in detail here is that the unwinding roller 313 is located inside the connecting plate 315, and a cam 3131 is fixedly installed at one end of the unwinding roller 313. After the impurities on the surface of the filter screen 312 are discharged, they will enter the connecting plate 315 for storage. In addition, when the unwinding roller 313 rotates, the cam 3131 rotates accordingly, and abuts against and separates from the cleaning member 319. The cleaning member 319 swings under the action of the cam 3131 and the elastic connecting member 3110, which can improve the cleaning effect of the cleaning member 319 on the filter screen 312. The power source is preferably a motor.

[0030] It should be added to the above that when the waterwheel rotates, it drives the floating slag into the lower floating plate 31, and also brings up a large water splash, which increases the contact amount between sewage and oxygen and speeds up the reaction speed of sewage.

[0031] When leaves on the surface of the sewage enter the lower floating plate 31 with the scum, the leaves cannot be cleaned by the cleaning piece 319 and may accumulate on the surface of the filter screen 312, resulting in a reduced filtering effect of the filter screen 312 on the scum. The present application provides a rotating cylinder 317 rotatably connected to the lower floating plate 31, a guide groove 3171 is provided on the inner wall surface of the rotating cylinder 317, and a collecting plate 318 is fixedly connected to the rotating cylinder 317; a connecting block 321 is fixedly installed on the surface of one side of the upper floating plate 32 close to the connecting plate 315; a guide block 322 is fixedly installed on the surface of the one side of the upper floating plate 32 close to the lower floating plate 31; a limiting block 3221 is fixedly connected to the surface of the guide block 322, and collecting rods 323 are equidistantly connected to the upper floating plate 32; and the upper floating plate 32 is slidably connected to the limiting groove 316 through the connecting block 321.

[0032] The upper floating plate 32 moves downward along the limiting groove 316 through the connecting block 321, so that the guide block 322 moves downward inside the rotating cylinder 317. At this time, the limiting block 3221 is inside the guide groove 3171 and squeezes the inner wall of the guide groove 3171, so that the rotating cylinder 317 rotates under the action of the limiting block 3221, and drives the collecting plate 318 to rotate. At the same time, the collecting rod 323 fixed on the upper floating plate 32 moves downward, pierces the leaves on the filter screen 312, and collects them. Then the upper floating plate 32 moves upward to reset the collecting plate 318. When the leaves on the collecting rod 323 fall under the action of gravity, they will fall onto the surface of the collecting plate 318. Specifically, the guide groove 3171 is composed of an arc guide section and a straight guide section connected in sequence. When the limit block 3221 moves in the arc guide section, the collecting plate 318 rotates. When the limit block 3221 moves in the straight guide section, the collecting rod 323 moves to penetrate the leaves, so that the movement between the collecting plate 318 and the collecting rod 323 does not interfere with each other, thereby completing the collection of the leaves on the filter screen 312 and ensuring the filtering effect of the filter screen 312 on the scum. In addition, when the collecting plate 318 rotates, it can clean the opening on the lower floating plate 31 to avoid clogging of the water inlet of the lower floating plate 31, which affects the cleaning of the scum.

[0033] What needs to be explained about the above structure is that when the filter screen 312 is wound from the winding roller 311 to the unwinding roller 313 or from the unwinding roller 313 to the winding roller 311, the water wheel transports the scum to the lower floating plate 31 to collect and process the scum. In addition, a drainage hole is provided on the side of the lower floating plate 31, which can discharge the sewage filtered by the filter screen 312. In this process, the upper floating plate 32 continuously and periodically collects and cleans the leaves on the surface of the filter screen 312 through the following structure: a slide groove 331 is provided on the surface of the connecting floating plate 33, and the surface of the slide groove 331 is slidably connected to a connection that drives the upper floating plate 32 to move The rod 332, the air inlet 333 fixedly installed on the connecting floating plate 33, the electric telescopic rod 334 fixedly installed on the air inlet 333, the connecting rod 332 is fixedly connected to the upper floating plate 32, one end of the electric telescopic rod 334 is fixedly connected to the connecting rod 332, and the connecting rod 332 is connected to two groups of upper floating plates 32 at the same time. Under the action of the electric telescopic rod 334, the connecting rod 332 is pushed to slide inside the slide groove 331 and the upper floating plate 32 moves downward. When the upper floating plate 32 moves, the slide groove 331 can limit the movement of the connecting rod 332 to avoid shaking when the upper floating plate 32 moves.

[0034] Finally, the present application drives the inner tube 28 to adjust its height by setting the lower floating plate 31, the upper floating plate 32 and the connecting floating plate 33, so as to avoid that when the water level is low, the air inlet pipe of the aerator 1 is exposed to the outside and is damaged by shaking due to the influence of wind in windy weather. At the same time, the aeration volume of the aerator 1 can be naturally adjusted according to the water volume without manual adjustment, which is more convenient. Since the lower floating plate 31, the upper floating plate 32 and the connecting floating plate 33 float on the water surface, they can collect and process the scum on the water surface, and at the same time, they can collect and process the leaves blown to the water surface in windy weather, which has a good use effect.

[0035] Working principle: The aerator 1 is manually installed at the bottom of the aeration tank, and then sewage is injected into the aeration tank. When the water level in the aeration tank rises, the inner tube 28 rises with the water level under the action of the connecting float 33. At this time, the connecting shaft 23 moves along the guide groove 22 and drives the air inlet plate 1 24 to rotate, so that the air inlet plate 1 24 coincides with the air inlet hole 27 on the air inlet plate 26, the ventilation area becomes larger, the ventilation volume becomes more, and the aeration volume is increased. When the inner tube 28 rises, the air inlet plate 1 24 rotates, which can not only adjust the air intake volume, but also the inner tube 28 rises and falls inside the outer tube 21, and the overall length of the inner tube 28 and the outer tube 21 can be adjusted, thereby preventing the inner tube 28 from being exposed too much outside the water surface when the water level is low. Then the aerator 1 is controlled to aerate the sewage. After the treatment, the sewage is allowed to stand and settle. During this process, the motor is started to drive the waterwheel to rotate to send the scum on the surface of the sewage to the inside of the lower floating plate 31, and the scum is filtered through the filter screen 312 inside the lower floating plate 31. At the same time, because the power source continues to drive the waterwheel to rotate, the unwinding roller 313 continues to release the filter screen 312, and at the same time, the winding roller 311 rotates under the action of the torsion spring to wind up the filter screen 312. Finally, after the filter screen 312 on the surface of the unwinding roller 313 is completely released, the power source is started to drive the unwinding roller 313 to reverse, so that the filter screen 312 is wound around the surface of the unwinding roller 313, and under the pulling force of the filter screen 312, the winding roller 311 is driven to rotate, and the torsion spring is deformed under force, so that the winding roller 311 can be subsequently The filter screen 312 is collected under the action of the torsion spring. When the filter screen 312 is wound between the winding roller 311 and the unwinding roller 313, the cleaning member 319 can clean the surface of the filter screen 312. In addition, a cleaning brush 3191 is provided on the side of the cleaning member 319 that contacts the filter screen 312. The cleaning brush 3191 can improve the cleaning effect of the filter screen 312. The inclined setting of the cleaning member 319 can make the impurities on the filter screen 312 move along the inclined surface of the cleaning member 319 from the upper end to the lower end when the cleaning member 319 cleans the filter screen 312, so that the cleaned impurities have a centralized outlet, and the sewage discharge effect is good. It should be explained in detail here that the unwinding roller 313 is located inside the connecting plate 315, and one side of the unwinding roller 313 The cam 3131 is fixedly installed at the end. The impurities on the surface of the filter screen 312 will enter the connecting plate 315 for storage after being discharged. In addition, when the unwinding roller 313 rotates, the cam 3131 rotates accordingly and abuts and separates from the cleaning member 319. The cleaning member 319 swings under the action of the cam 3131 and the elastic connecting member 3110, which can improve the cleaning effect of the cleaning member 319 on the filter screen 312. When the leaves on the surface of the sewage enter the lower floating plate 31 with the scum, the electric telescopic rod 334 is started to push the connecting rod 332 to slide in the slide groove 331, and the upper floating plate 32 moves downward, so that the guide block 322 moves downward in the rotating cylinder 317. At this time, the limit block 3221 is inside the guide groove 3171 and squeezes the inner wall of the guide groove 3171.The rotating cylinder 317 rotates under the action of the limit block 3221, and drives the collecting plate 318 to rotate. At the same time, the collecting rod 323 fixed on the upper floating plate 32 moves downward, pierces the leaves on the filter screen 312, and collects them. Then the upper floating plate 32 moves upward to reset the collecting plate 318. When the leaves on the collecting rod 323 fall under the action of gravity, they will fall to the surface of the collecting plate 318 for collection.

[0036] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0037] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An aeration device for sewage treatment, characterized in that: include: Aerator, regulating unit for adjusting aeration volume according to water volume, processing unit for cleaning and collecting scum on water surface; The regulating unit comprises: an outer tube for supplying air to the aerator, an inner tube, and an air intake member for controlling the inner tube to intake air into the outer tube; The air intake member comprises: a fixed block fixedly connected to the inner tube, an air intake plate 2 fixedly connected to the fixed block, an air intake plate 1 rotatably mounted on the fixed block, and air intake holes arranged on the air intake plate 1 and the air intake plate 2 around the axis of the air intake plate 1, and the air intake plate 1 is fixedly connected to a connecting shaft; The inner wall of the outer tube is provided with a guide groove for guiding the air intake plate to rotate, and the connecting shaft is slidably connected to the inner wall of the guide groove; the guide groove is arc-shaped.

2. The aeration device for sewage treatment according to claim 1, characterized in that: The processing unit comprises: a connecting floating plate for driving the inner tube to rise and fall with the water surface, a lower floating plate fixedly connected to the connecting floating plate, and an upper floating plate slidably mounted on the lower floating plate.

3. The aeration device for sewage treatment according to claim 2, characterized in that: The surface of the lower floating plate is rotatably connected with a winding roller, a filter screen wound on the winding roller, a unwinding roller connected to the filter screen, a pressure roller for adjusting the surface tension of the filter screen, a connecting plate fixedly connected to one side of the lower floating plate, a limiting groove provided on the connecting plate, a rotating cylinder rotatably connected to the lower floating plate, a collecting plate fixedly connected to the rotating cylinder, a cleaning part for cleaning the filter screen, and an elastic connecting rod fixedly connected to the cleaning part; the pressure roller is mounted on the connecting plate.

4. The aeration device for sewage treatment according to claim 3, characterized in that: The unwinding roller is located inside the connecting plate, and a cam is fixedly mounted on one end of the unwinding roller.

5. The aeration device for sewage treatment according to claim 3, characterized in that: A guide groove is provided on the inner wall surface of the rotating cylinder, and the guide groove consists of an arc-shaped guide section and a straight guide section connected in sequence.

6. The aeration device for sewage treatment according to claim 3, characterized in that: The cleaning piece is arranged obliquely, and a cleaning brush is arranged on the side of the cleaning piece contacting with the filter screen.

7. The aeration device for sewage treatment according to claim 2, characterized in that: A connecting block is fixedly installed on one side surface of the upper floating plate close to the connecting plate, a guiding block is fixedly installed on one side surface of the upper floating plate close to the lower floating plate, and collecting rods are connected to the upper floating plate at equal intervals.

8. The aeration device for sewage treatment according to claim 7, characterized in that: The upper floating plate is slidably connected with the limiting groove through a connecting block, and the surface of the guide block is fixedly connected with the limiting block.

9. The aeration device for sewage treatment as claimed in claim 1, characterized in that: The connecting floating plate is fixedly mounted on the inner tube, a slide groove is provided on the surface of the connecting floating plate, a connecting rod that drives the upper floating plate to move is slidably connected to the slide groove surface, an air inlet fixedly mounted on the connecting floating plate, and an electric telescopic rod fixedly mounted on the air inlet.

10. An aeration device for sewage treatment as claimed in claim 9, characterized in that: The connecting rod is fixedly connected to the upper floating plate, and one end of the electric telescopic rod is fixedly connected to the connecting rod.

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