Aeration device and method for treating electronic-grade isopropyl alcohol production wastewater

Abstract

The present invention relates to the technical field of wastewater treatment, and specifically to an aeration device and method for treating electronic-grade isopropyl alcohol production wastewater, comprising: an aeration barrel, and a plurality of through grooves provided on the outer wall of the aeration barrel and equidistantly distributed around the circumference, an aeration disk rotatably mounted on the aeration barrel and coordinated with the through grooves, and an air inlet pipe connected to the outer wall of the aeration barrel; a pressurized air supply component arranged in the aeration barrel and coordinated with the through grooves, the pressurized air supply component being capable of operating when the pressure in the aeration barrel changes to adjust the conduction state of the through grooves; a plurality of air supply pipes connected to the aeration disk and equidistantly distributed around the circumference, the aeration barrel being provided with a radiation control mechanism connected to the air supply pipe for adjusting the air supply angle of the air supply pipe; an overload reflux mechanism arranged on the pressurized air supply component, the pressurized air supply component also being provided with a conduction control mechanism connected to the aeration disk, and the application being capable of automatically adjusting the radiation range of aeration according to the aeration pressure to ensure an optimal aeration effect.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, in particular to an aeration device and a method for treating electronic-grade isopropyl alcohol production wastewater. Background Art

[0002] Electronic-grade isopropyl alcohol production wastewater mainly comes from the production processes of chemical, pharmaceutical, electronic and other industries that use isopropyl alcohol as a solvent or participate in reactions, such as cleaning equipment, post-reaction discharge liquid, etc.

[0003] Wastewater from electronic-grade isopropyl alcohol production is typically treated through biological treatment, utilizing the activated sludge process to degrade organic matter in the wastewater. In the activated sludge tank, the addition of an appropriate amount of microbial inoculant increases the number and activity of the microorganisms, effectively degrading the organic matter in the wastewater. Furthermore, to enhance the effectiveness of biological treatment, aeration devices are used to provide the microorganisms with sufficient oxygen.

[0004] When the existing aeration device is aerating, when the aeration volume needs to be increased, the air pressure inside the aeration device will also increase. However, if too much gas is pumped into the aeration device due to equipment abnormality or operating errors, the existing aeration device cannot automatically adjust the aeration radiation range according to the air pressure inside it and perform pressure relief treatment in time. As a result, the wastewater aeration volume may be too high, causing damage to the water ecological environment and damage to the aeration device. Summary of the Invention

[0005] The object of the present invention is to provide an aeration device and method based on the treatment of electronic-grade isopropyl alcohol production wastewater to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An aeration device for treating electronic-grade isopropyl alcohol production wastewater, comprising:

[0008] An aeration barrel, and a plurality of through slots equidistantly distributed on the outer wall of the aeration barrel, an aeration disc rotatably mounted on the aeration barrel and engaging with the through slots, and an air inlet pipe connected to the outer wall of the aeration barrel;

[0009] Also includes:

[0010] A pressurized air supply component is disposed in the aeration barrel and cooperates with the through slot, and the pressurized air supply component can be activated when the pressure in the aeration barrel changes to adjust the conduction state of the through slot;

[0011] A plurality of air supply pipes are connected to the aeration plate and are equidistantly distributed around the circumference. The aeration barrel is provided with a radiation control mechanism connected to the air supply pipes for adjusting the air supply angle of the air supply pipes.

[0012] An overload reflux mechanism is provided on the pressurized air supply component, and the pressurized air supply component is also provided with a conduction and regulation mechanism connected to the aeration disc. The overload reflux mechanism can be activated when the pressurized air supply component moves, and while driving the aeration disc to rotate through the conduction and regulation mechanism, the aeration barrel is subjected to pressure relief.

[0013] As a further solution of the present invention: the pressurized air supply assembly includes a return pipe and a guide column installed in the aeration barrel, a piston disc is slidably installed on the guide column, a rotating sleeve mounted on the return pipe is rotatably installed on the piston disc, a sealing ring that cooperates with the through groove is provided on the piston disc, and the sealing ring is slidably and sealedly connected to the inner wall of the aeration barrel.

[0014] As a further solution of the present invention: the radiation control mechanism includes a plurality of air pressure tubes installed on the outer wall of the aeration barrel and distributed equidistantly around the circumference, the air pressure tubes are connected to the aeration barrel, a sealing ring is installed in the sliding seal of the air pressure tube, and a follower component connected to the sealing ring is provided in the air pressure tube.

[0015] As a further solution of the present invention, the follower assembly includes a push rod mounted on the sealing ring and passing through the air pressure tube, the push rod being sleeved with a first spring, and two ends of the first spring respectively abutting against the sealing ring and the inner wall of the air pressure tube;

[0016] It also includes a plurality of arc-shaped hinged plates rotatably mounted on the aeration disk and equidistantly distributed around the circumference. The arc-shaped hinged plates are provided with slots that cooperate with the air supply pipes. The arc-shaped hinged plates are hinged with connecting rods that are hinged to the push rods.

[0017] As a further solution of the present invention: the overload reflux mechanism includes a movable sleeve slidably mounted on the rotating sleeve, the movable sleeve is provided with a first connecting plate slidably connected to the guide column, the rotating sleeve is provided with a second spring, the two ends of the second spring are respectively abutted against the first connecting plate and the piston disc, and the rotating sleeve is provided with a rotating assembly connected to the movable sleeve.

[0018] As a further solution of the present invention: the rotating component includes a spiral groove opened on the outer wall of the rotating sleeve, the inner wall of the movable sleeve is provided with a first limit block slidingly engaged with the spiral groove, and the return pipe is provided with an elastic structure connected to the first connecting plate.

[0019] As a further solution of the present invention: the elastic structure includes a guide groove opened on the outer wall of the return pipe, the inner wall of the rotating sleeve is provided with a second limit block slidingly engaged with the guide groove, a second connecting plate slidingly installed on the return pipe and connected to the guide column is slidably connected, and a third spring is sleeved on the return pipe, and the two ends of the third spring are respectively abutted against the second connecting plate and the first connecting plate.

[0020] As a further solution of the present invention: the conduction and regulation mechanism includes a first conduction groove provided on the rotating sleeve, a second conduction groove is provided on the return pipe and is conductively matched with the first conduction groove, and a gearing component connected to the return pipe is provided in the aeration barrel.

[0021] As a further solution of the present invention: the engaging assembly includes a rotating rod rotatably installed in the return pipe and passing through the aeration barrel, the rotating rod is provided with a plurality of fan blades equidistantly distributed around the circumference, a gear is provided at the end of the rotating rod, and a gear ring meshing with the gear is provided at the bottom of the aeration plate.

[0022] An aeration method for treating electronic-grade isopropyl alcohol production wastewater comprises the following steps:

[0023] Step 1: The gas required for aeration is delivered to the aeration tank through the air inlet pipe. The air pressure in the aeration tank will continue to increase and act on the booster air supply component;

[0024] Step 2: The pressurized air supply assembly will move to open the slot, and the gas will enter the aeration plate through the slot and be discharged through the air supply pipe;

[0025] Step 3: When the air pressure in the aeration tank continues to rise, the radiation control mechanism is driven to move to adjust the pumping angle of the air supply pipe;

[0026] Step 4: When the air pressure in the aeration tank exceeds the critical value, under the action of the booster air supply component, the overload reflux mechanism controls the movement of the conduction control mechanism to drive the aeration disc to rotate while performing a pressure relief action on the aeration tank.

[0027] Compared with the prior art, the beneficial effect of the present invention is that the present application can automatically adjust the aeration radiation range by changing the air pressure in the aeration barrel to ensure the best aeration effect. Specifically, when the gas is pumped into the aeration barrel, the booster air supply component is driven to move under the action of the air pressure, and when the air pressure reaches a certain value, the booster air supply component controls the conduction of the through groove, so that the gas enters the aeration plate through the through groove and is discharged through the air supply pipe to aerate the wastewater. If the air pressure in the aeration barrel is still in an elevated state, under the action of the radiation control mechanism, the air supply angle of the air supply pipe is changed, thereby increasing the aeration radiation range. Through the automatic adjustment of the radiation range, it can also avoid the wastewater in the area from having too high an oxygen content due to the smaller aeration range when the aeration volume increases, thereby affecting the subsequent anaerobic treatment.

[0028] If the air pressure in the aeration tank is too high, under the action of the overload reflux mechanism, the conduction of the reflux pipe is controlled by the conduction and regulation mechanism to relieve the pressure of the aeration tank. At the same time, the conduction and regulation mechanism will also drive the aeration disc to rotate to further increase the radiation range of aeration. Through the above operations, the air pressure in the aeration tank can be automatically monitored, and the aeration tank can be depressurized when the air pressure in the aeration tank exceeds the set value. At the same time, the aeration volume can be prevented from continuing to increase, so as to achieve pressure relief protection for the aeration tank while avoiding the problem of damage to the water ecosystem caused by excessive aeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a schematic structural diagram of an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0030] Figure 2 This is a schematic diagram of the half-section structure of an aeration barrel in an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0031] Figure 3 This is a schematic diagram of the structure of the aeration barrel, through groove, and gear in an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0032] Figure 4 This is a structural schematic diagram of the radiation control mechanism, aeration plate, and air supply pipe in an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0033] Figure 5 This is a schematic diagram of the explosion structure of part of the radiation control mechanism in an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0034] Figure 6 This is a structural schematic diagram of a partial conduction control mechanism and an aeration plate in an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0035] Figure 7 This is a schematic diagram of the connection relationship between the pressurized air supply component, the overload reflux mechanism, and the partial conduction control mechanism in an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0036] Figure 8 for Figure 7 A magnified schematic diagram of the structure at point A.

[0037] Figure 9 This is a schematic diagram of a partially half-sectioned structure of an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0038] Figure 10 for Figure 9 A magnified schematic diagram of the structure at point B.

[0039] Figure 11 This is a schematic diagram of the explosion structure of the overload reflux mechanism and the partial conduction control mechanism in an embodiment of an aeration device for treating electronic-grade isopropyl alcohol production wastewater.

[0040] In the figure: 1. aeration barrel; 101. air inlet pipe; 2. aeration plate; 3. air supply pipe; 4. arc-shaped hinged plate; 401. slot; 5. air pressure pipe; 6. push rod; 7. sealing ring; 8. first spring; 9. connecting rod; 10. through slot; 11. return pipe; 1101. first vertical slot; 1102. first annular slot; 1103. second vertical slot; 1104. second annular slot; 12. guide column; 13. rotating sleeve; 14. piston disc; 15. sealing ring; 16. spiral groove; 17. first conducting groove; 18. movable sleeve; 19. first connecting plate; 20. first limit block; 21. second spring; 22. second limit block; 23. second connecting plate; 24. third spring; 25. second conducting groove; 26. rotating rod; 27. fan blade; 28. gear; 29. ​​gear ring. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0043] See also Figures 1 to 11 In an embodiment of the present invention, an aeration device for treating electronic-grade isopropyl alcohol production wastewater comprises:

[0044] An aeration barrel 1, and a plurality of through slots 10 equidistantly distributed on the outer wall of the aeration barrel 1, an aeration disc 2 rotatably mounted on the aeration barrel 1 and in communication with the through slots 10, and an air inlet pipe 101 connected to the outer wall of the aeration barrel 1;

[0045] Also includes:

[0046] A pressurized air supply component is provided in the aeration barrel 1 and cooperates with the through slot 10. The pressurized air supply component can be activated when the pressure in the aeration barrel 1 changes to adjust the conduction state of the through slot 10;

[0047] The air supply pipes 3 are connected to the aeration plate 2 and are distributed equidistantly around the circumference. The aeration barrel 1 is provided with a radiation control mechanism connected to the air supply pipes 3 for adjusting the air supply angle of the air supply pipes 3.

[0048] The overload reflux mechanism is arranged on the boost air supply component, and the boost air supply component is also provided with a conduction and regulation mechanism connected to the aeration plate 2. The overload reflux mechanism can be activated when the boost air supply component moves, and while driving the aeration plate 2 to rotate through the conduction and regulation mechanism, the aeration barrel 1 is subjected to pressure relief.

[0049] Specifically, when aerating the wastewater, air can be pumped into the aeration barrel 1 through the air inlet pipe 101, so that the air pressure in the aeration barrel 1 gradually increases. Under the action of the air pressure, the pressurized air supply component is driven to move, and when the air pressure in the aeration barrel 1 reaches the required value, the through groove 10 is opened, so that the gas enters the aeration plate 2 through the through groove 10, and the gas in the aeration plate 2 will be discharged through the air supply pipe 3. As the air pressure in the aeration barrel 1 continues to increase, the air supply angle of the air supply pipe 3 is adjusted under the action of the radiation control mechanism to increase the pressure. The radiation range of aeration, if the air pressure in the aeration barrel 1 is still in an increasing state, it drives the overload reflux mechanism to move, and when the air pressure exceeds the set value, the overload reflux mechanism controls the movement of the conduction control mechanism to rotate the aeration disc 2 and relieve the pressure of the aeration barrel 1. When the aeration disc 2 rotates, the radiation range of the gas discharged through the air supply pipe 3 continues to increase, and has a certain turbulent effect on the wastewater, which can not only prevent excessive aeration, but also automatically adjust the aeration radiation range according to the air pressure to enhance the aeration effect of the wastewater.

[0050] See also Figure 2 、 Figure 7 、 Figure 9 、 Figure 11 The pressurized air supply assembly includes a return pipe 11 and a guide column 12 installed in the aeration barrel 1, a piston disc 14 is slidably installed on the guide column 12, and a rotating sleeve 13 which is sleeved on the return pipe 11 is rotatably installed on the piston disc 14. A sealing ring 15 that cooperates with the through groove 10 is provided on the piston disc 14, and the sealing ring 15 is slidably and sealedly connected to the inner wall of the aeration barrel 1.

[0051] In detail, a limit ring is provided on the return pipe 11. In the initial state, under the action of the overload reflux mechanism, the piston disc 14 is located at the end of the stroke toward the bottom of the aeration barrel 1 and is in contact with the limit ring. At this time, the sealing ring 15 blocks the through groove 10 to ensure that the gas does not enter the aeration plate 2. When the wastewater needs to be aerated, air can be pumped into the aeration barrel 1 through the air inlet pipe 101 to increase the air pressure in the aeration barrel 1. Under the action of the air pressure, the piston disc 14 is pushed to move along the length direction of the guide column 12, thereby driving the sealing ring 15 to move. When the sealing ring 15 passes over the through groove 10, the gas in the aeration barrel 1 will enter the aeration plate 2 through the through groove 10 and be discharged through the air supply pipe 3. The diameter of the air supply pipe 3 is small, so that the discharged gas forms small bubbles in the wastewater, thereby increasing the contact range with the wastewater, ensuring that more oxygen in the air can be dissolved in the wastewater, and ensuring the best aeration effect on the wastewater.

[0052] See also Figure 1 、 Figure 2 、 Figure 4-Figure 6The radiation control mechanism includes a plurality of air pressure tubes 5 installed on the outer wall of the aeration barrel 1 and distributed equidistantly around the circumference. The air pressure tubes 5 are communicated with the aeration barrel 1. A sealing ring 7 is installed in the air pressure tube 5 for sliding sealing. A follower assembly connected to the sealing ring 7 is provided in the air pressure tube 5, wherein the follower assembly includes a push rod 6 installed on the sealing ring 7 and passing through the air pressure tube 5. A first spring 8 is sleeved on the push rod 6, and the two ends of the first spring 8 are respectively in contact with the sealing ring 7 and the inner wall of the air pressure tube 5; it also includes a plurality of arc-shaped hinged plates 4 rotatably installed on the aeration disc 2 and distributed equidistantly around the circumference, the arc-shaped hinged plates 4 are provided with a card slot 401 cooperating with the air supply pipe 3, and the arc-shaped hinged plates 4 are hinged with a connecting rod 9 hinged to the push rod 6.

[0053] It should be noted that the piston disc 14 and the sealing ring 15 divide the space in the aeration barrel 1 into two parts. In the initial state, the first spring 8 is in a compressed state, so that the sealing ring 7 fits tightly against the barrel wall of the aeration barrel 1, so as to control the angle between the arc hinged plate 4 and the aeration barrel 1 to be minimum through the push rod 6 and the connecting rod 9. Under the action of the arc hinged plate 4 and the card slot 401, the air supply direction of the air supply pipe 3 is perpendicular to the aeration barrel 1. At this time, the air pressure in the aeration barrel 1 is relatively small, so that the piston disc 14 and the sealing ring 15 are located below the air pressure pipe 5, and the air pressure pipe 5 is not connected to the space of the air inlet part. As the gas enters the aeration barrel 1, the air pressure in the aeration barrel 1 gradually increases, and drives the piston disc 14 and the sealing ring 15 to move. When the sealing ring 15 passes over the through groove 10, the gas in the aeration barrel 1 will It will enter the aeration plate 2 through the through groove 10 and be discharged through the air supply pipe 3 to aerate the wastewater. When the aeration volume needs to be increased, the amount of gas pumped into the aeration barrel 1 needs to be increased. As the gas pumping rate increases, the air pressure in the aeration barrel 1 will also increase to control the piston disc 14 and the sealing ring 15 to continue to move. When the sealing ring 15 passes over the air pressure tube 5, the air pressure in the aeration barrel 1 will act on the sealing ring 7 and push the sealing ring 7 to move in the direction away from the aeration barrel 1 to compress the first spring 8. The sealing ring 7 will also drive the push rod 6 to move and control the movement of the arc-shaped hinged plate 4 through the connecting rod 9. Under the action of the slot 401, the air supply pipe 3 is controlled to swing at a certain angle and swing in the direction away from the aeration barrel 1, thereby increasing the radiation range of aeration.

[0054] Preferably, by changing the air pressure in the aeration barrel 1, it is possible to automatically control the aeration disc 2 to be turned on for aeration treatment after the air pressure in the aeration barrel 1 reaches the required value, and when the required aeration volume increases, the air pressure in the aeration barrel 1 continues to increase, and the angle of the air supply pipe 3 is automatically adjusted through the radiation control mechanism, thereby increasing the radiation range of aeration. Through the automatic adjustment of the radiation range, it is also possible to avoid the wastewater in the area having too high an oxygen content due to the smaller aeration range when the aeration volume increases, thereby affecting the subsequent anaerobic treatment.

[0055] See also Figure 2 、 Figure 7-11 The overload reflux mechanism includes a movable sleeve 18 slidably mounted on the rotating sleeve 13, and a first connecting plate 19 slidably connected to the guide column 12 is provided on the movable sleeve 18. A second spring 21 is sleeved on the rotating sleeve 13, and the two ends of the second spring 21 are respectively in contact with the first connecting plate 19 and the piston disc 14. A rotating assembly connected to the movable sleeve 18 is provided on the rotating sleeve 13, wherein the rotating assembly includes a spiral groove 16 opened on the outer wall of the rotating sleeve 13, and the inner wall of the movable sleeve 18 is provided with a spiral groove 16 connected to the spiral groove 16. A first limit block 20 is slidably engaged with the rotary groove 16, and an elastic structure connected to the first connecting plate 19 is provided on the return pipe 11. The above-mentioned elastic structure includes a guide groove opened on the outer wall of the return pipe 11, and a second limit block 22 is slidably engaged with the guide groove on the inner wall of the rotating sleeve 13. A second connecting plate 23 slidably connected to the guide column 12 is slidably installed on the return pipe 11, and a third spring 24 is sleeved on the return pipe 11, and the two ends of the third spring 24 are respectively abutted against the second connecting plate 23 and the first connecting plate 19.

[0056] Furthermore, the guide groove can be divided into multiple sections, namely the first vertical groove 1101, the first annular groove 1102, the second vertical groove 1103, and the second annular groove 1104. One end of the first annular groove 1102 is connected to one end of the first vertical groove 1101, and the other end of the first annular groove 1102 is connected to the second vertical groove 1103. One end of the second annular groove 1104 is connected to one end of the second vertical groove 1103, and the other end of the second annular groove 1104 is connected to the first vertical groove 1101.

[0057] In the initial state, the second spring 21 and the third spring 24 are both in a compressed state, and the compression amount of the second spring 21 is greater than the compression amount of the third spring 24. Under the action of the second spring 21 and the third spring 24, the piston disc 14 is located at the end of the stroke away from the second connecting plate 23, and abuts against the limit ring, so that the second limit block 22 is located at the end of the stroke of the first vertical groove 1101 away from the first annular groove 1102. Under the action of the second spring 21, the first connecting plate 19 is located at the end of the stroke away from the piston disc 14, so that the first limit block 20 is located at the end of the stroke of the spiral groove 16 away from the piston disc 14.

[0058] When the wastewater needs to be aerated, gas will be pumped into the aeration barrel 1, causing the air pressure in the aeration barrel 1 to increase, so that the piston disc 14 moves. The piston disc 14 will drive the second limit block 22 to slide in the first vertical groove 1101 by rotating the sleeve 13, and under the action of the second limit block 22 and the first vertical groove 1101, the rotating sleeve 13 is in a locked state. At the same time, under the action of the second spring 21, the first connecting plate 19 and the movable sleeve 18 are synchronously moved toward the second connecting plate 23 to compress the third spring 24. If the aeration amount needs to be increased, the air pressure in the aeration barrel 1 continues to increase, thereby controlling the piston disc 14 to continue to move, so as to control the second limit block 22 to continue to slide along the first vertical groove 1101 by rotating the sleeve 13, so that the third spring 24 continues to be compressed.

[0059] During this process, the elastic potential energy of the second spring 21 is greater than the elastic potential energy of the third spring 24. When the second limit block 22 passes the connection position of the first vertical groove 1101 and the second annular groove 1104, the elastic potential energy of the third spring 24 will exceed the elastic potential energy of the second spring 21. However, under the action of the second limit block 22 and the first vertical groove 1101, the rotating sleeve 13 will not rotate. Therefore, under the action of the spiral groove 16 and the first limit block 20, the positions of the movable sleeve 18 and the first connecting plate 19 remain unchanged. When the second limit block 22 moves to the connection position between the first vertical groove 1101 and the first annular groove 1102 is in the connected position, the rotating sleeve 13 is no longer locked, the elastic potential energy of the third spring 24 is released, and the first connecting plate 19 is driven to move toward the piston disk 14, so as to drive the first limit block 20 to slide along the spiral groove 16 through the movable sleeve 18. Under the action of the first limit block 20 and the spiral groove 16, the rotating sleeve 13 is rotated to drive the second limit block 22 to enter the connected position of the first annular groove 1102 and the second vertical groove 1103. Under the action of the rotating sleeve 13, the conduction control mechanism is moved to connect the aeration tank 1 with the return pipe 11, thereby relieving the pressure of the aeration tank 1.

[0060] Preferably, when increasing the aeration volume, if the pumping equipment has an abnormality, or an operating error causes an excessive amount of gas to be pumped into the aeration barrel 1, it will result in excessive aeration, and excessive aeration may lead to a decrease in treatment effect. Excessive aeration will destroy the biofilm, affect the normal metabolic activities of microorganisms, and result in poor treatment effect. In addition, excessive aeration will cause sludge to float, accelerate sludge aging, affect the sedimentation performance of sludge and the quality of effluent water, and excessive aeration will also cause the dissolved oxygen content in the water body to be too high, which may have an adverse effect on aquatic organisms and may even cause damage to the aquatic ecosystem. The air pressure in the aeration barrel 1 will gradually increase. If the air pressure is too high, the aeration barrel 1 may be damaged. Therefore, in order to avoid the above problems, when the piston disc 14 moves due to the increase in air pressure, when After the piston disc 14 moves to the set position, the rotating sleeve 13 rotates with the cooperation of the second spring 21 and the third spring 24, so that the return pipe 11 is connected to the aeration barrel 1, and the gas in the aeration barrel 1 can be discharged to the outside of the wastewater through the return pipe 11. Through the above operation, it is possible to automatically monitor the air pressure in the aeration barrel 1, and when the air pressure in the aeration barrel 1 exceeds the set value, the aeration barrel 1 can be pressure-relieved. At the same time, it can also prevent the aeration amount from continuing to increase, so as to achieve pressure relief protection for the aeration barrel 1 while avoiding the problem of damage to the water ecosystem caused by excessive aeration.

[0061] Among them, when the pump air volume gradually decreases, the air pressure in the aeration barrel 1 also gradually decreases. At this time, under the action of the third spring 24, the first connecting plate 19 is driven to move. Since the first limit block 20 is located at the end of the stroke of the spiral groove 16 toward the piston disc 14, the rotating sleeve 13 will move synchronously to drive the second limit block 22 to slide in the second vertical groove 1103. Under the action of the second limit block 22 and the second vertical groove 1103, the rotating sleeve 13 is in a locked state. Therefore, when the second limit block 22 is in the middle position between the first annular groove 1102 and the second annular groove 1104, the elastic potential energy of the second spring 21 will be toward the elastic potential energy of the third spring 24. When the second limit block 2 When the second annular groove 1104 and the second vertical groove 1103 are connected, the second spring 21 is elastically released and drives the first connecting plate 19 to move in a direction away from the piston disc 14, thereby driving the first limit block 20 to slide in the spiral groove 16, causing the rotating sleeve 13 to rotate toward the initial angle. When the second limit block 22 returns to the first vertical groove 1101, the return pipe 11 is blocked again under the action of the conduction control mechanism. By controlling the conduction and blocking of the return pipe 11, the aeration tank 1 can be automatically depressurized when the air pressure in the aeration tank 1 is too high. When the air pressure in the aeration tank 1 returns to the normal aeration range, the return pipe 11 is controlled to be blocked, thereby avoiding energy waste during aeration.

[0062] See also Figure 2 、 Figure 3 、 Figure 6 、 Figure 7 、 Figure 9 、 Figure 11 The conduction and regulation mechanism includes a first conduction groove 17 provided on the rotating sleeve 13, and a second conduction groove 25 is provided on the return pipe 11 to conduct and cooperate with the first conduction groove 17. A gearing assembly connected to the return pipe 11 is provided in the aeration barrel 1, wherein the gearing assembly includes a rotating rod 26 rotatably installed in the return pipe 11 and passing through the aeration barrel 1, and a plurality of fan blades 27 equidistantly distributed around the circumference are provided on the rotating rod 26, a gear 28 is provided at the end of the rotating rod 26, and a gear ring 29 meshing with the gear 28 is provided at the bottom of the aeration plate 2.

[0063] Furthermore, in the initial state, the first conduction groove 17 and the second conduction groove 25 are in a separated state, so that the return pipe 11 is in a blocked state. If the air pressure in the aeration tank 1 exceeds the critical value, under the action of the overload return mechanism, the first conduction groove 17 is driven to move to the same horizontal plane as the second conduction groove 25 by the rotating sleeve 13, and the rotating sleeve 13 is controlled to rotate so that the first conduction groove 17 moves to a conducting position with the second conduction groove 25. At this time, the gas in the aeration tank 1 will pass through the first conduction groove 17 and the second conduction groove 25. When the gas enters the return pipe 11 and circulates, it will act on the fan blades 27, thereby driving the rotating rod 26 to rotate. The rotating rod 26 will drive the gear 28 to rotate, so as to control the rotation of the aeration disk 2 through the gear ring 29. When the aeration disk 2 rotates, the aeration radiation range can be further increased to prevent the problem of damage to the water ecosystem due to excessive aeration. At the same time, since the driving source for the rotation of the aeration disk 2 is the gas discharged during pressure relief, it can not only realize the reuse of energy, but also increase the aeration radiation range again according to the air pressure in the aeration barrel 1.

[0064] An aeration method for treating electronic-grade isopropyl alcohol production wastewater comprises the following steps:

[0065] Step 1: The gas required for aeration is delivered to the aeration barrel 1 through the air inlet pipe 101. The air pressure in the aeration barrel 1 will continue to increase and act on the booster air supply component;

[0066] Step 2: The pressurized air supply assembly will move, making the through slot 10 conductive, and the gas will enter the aeration plate 2 through the through slot 10 and be discharged through the air supply pipe 3;

[0067] Step 3: When the air pressure in the aeration tank 1 continues to rise, the radiation control mechanism is driven to move to adjust the pumping angle of the air supply pipe 3;

[0068] Step 4: When the air pressure in the aeration tank 1 exceeds the critical value, under the action of the booster air supply component, the overload reflux mechanism controls the movement of the conduction control mechanism to drive the aeration disc 2 to rotate while performing a pressure relief action on the aeration tank 1.

[0069] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0070] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Aeration device based on electronic grade isopropyl alcohol production wastewater treatment, including: An aeration barrel (1), and a plurality of through slots (10) provided on the outer wall of the aeration barrel (1) and distributed equidistantly around the circumference; an aeration disc (2) rotatably mounted on the aeration barrel (1) and in communication with the through slots (10); and an air inlet pipe (101) connected to the outer wall of the aeration barrel (1); It is characterized by further comprising: A pressurized air supply component is arranged in the aeration barrel (1) and cooperates with the through groove (10), and the pressurized air supply component can be activated when the pressure in the aeration barrel (1) changes to adjust the conduction state of the through groove (10); A plurality of air supply pipes (3) are connected to the aeration plate (2) and are equidistantly distributed around the circumference. The aeration barrel (1) is provided with a radiation control mechanism connected to the air supply pipes (3) for adjusting the air supply angle of the air supply pipes (3); An overload reflux mechanism is provided on the pressurized air supply component. The pressurized air supply component is also provided with a conduction control mechanism connected to the aeration disc (2). The overload reflux mechanism can be activated when the pressurized air supply component moves, and while driving the aeration disc (2) to rotate through the conduction control mechanism, the aeration barrel (1) is depressurized.

2. The aeration device based on the treatment of electronic grade isopropyl alcohol production wastewater according to claim 1, characterized in that: The pressurized air supply assembly comprises a return pipe (11) and a guide column (12) installed in the aeration barrel (1); a piston disc (14) is slidably mounted on the guide column (12); a rotating sleeve (13) sleeved on the return pipe (11) is rotatably mounted on the piston disc (14); a sealing ring (15) is provided on the piston disc (14) and matches the through groove (10); and the sealing ring (15) is slidably and sealingly connected to the inner wall of the aeration barrel (1).

3. The aeration device based on the treatment of electronic grade isopropyl alcohol production wastewater according to claim 1, characterized in that: The radiation control mechanism comprises a plurality of air pressure tubes (5) installed on the outer wall of the aeration barrel (1) and distributed equidistantly around the circumference. The air pressure tubes (5) are in communication with the aeration barrel (1). A sealing ring (7) is installed in the air pressure tube (5) for sliding sealing. A follower assembly connected to the sealing ring (7) is provided in the air pressure tube (5).

4. The aeration device based on the treatment of electronic grade isopropyl alcohol production wastewater according to claim 3, characterized in that: The follower assembly includes a push rod (6) mounted on the sealing ring (7) and passing through the air pressure tube (5), a first spring (8) is sleeved on the push rod (6), and two ends of the first spring (8) are respectively in contact with the sealing ring (7) and the inner wall of the air pressure tube (5); It also includes a plurality of arc-shaped hinged plates (4) rotatably mounted on the aeration disc (2) and equidistantly distributed around the circumference, wherein the arc-shaped hinged plates (4) are provided with slots (401) that cooperate with the air supply pipe (3), and the arc-shaped hinged plates (4) are hinged with connecting rods (9) that are hinged with the push rods (6).

5. The aeration device based on the treatment of electronic grade isopropyl alcohol production wastewater according to claim 2, characterized in that: The overload return mechanism comprises a movable sleeve (18) slidably mounted on the rotating sleeve (13); a first connecting plate (19) slidably connected to the guide column (12) is provided on the movable sleeve (18); a second spring (21) is sleeved on the rotating sleeve (13); two ends of the second spring (21) are respectively in contact with the first connecting plate (19) and the piston disc (14); and a rotating assembly connected to the movable sleeve (18) is provided on the rotating sleeve (13).

6. The aeration device based on the treatment of electronic grade isopropyl alcohol production wastewater according to claim 5, characterized in that: The rotating assembly includes a spiral groove (16) provided on the outer wall of the rotating sleeve (13); a first limiting block (20) is provided on the inner wall of the movable sleeve (18) and is slidably engaged with the spiral groove (16); and an elastic structure connected to the first connecting plate (19) is provided on the return pipe (11).

7. The aeration device for treating electronic-grade isopropyl alcohol production wastewater according to claim 6, characterized in that: The elastic structure includes a guide groove provided on the outer wall of the return pipe (11); a second limit block (22) slidably engaged with the guide groove is provided on the inner wall of the rotating sleeve (13); a second connecting plate (23) slidably connected to the guide column (12) is slidably mounted on the return pipe (11); a third spring (24) is sleeved on the return pipe (11); and two ends of the third spring (24) are respectively in contact with the second connecting plate (23) and the first connecting plate (19).

8. The aeration device for treating electronic-grade isopropyl alcohol production wastewater according to claim 2, characterized in that: The conduction regulating mechanism comprises a first conduction groove (17) provided on the rotating sleeve (13); a second conduction groove (25) is provided on the return pipe (11) and is in conduction with the first conduction groove (17); and a gearing assembly connected to the return pipe (11) is provided in the aeration barrel (1).

9. The aeration device for treating electronic-grade isopropyl alcohol production wastewater according to claim 8, characterized in that: The gearing assembly comprises a rotating rod (26) rotatably mounted in the return pipe (11) and passing through the aeration barrel (1); a plurality of blades (27) equidistantly distributed around a circumference are provided on the rotating rod (26); a gear (28) is provided at the end of the rotating rod (26); and a gear ring (29) meshing with the gear (28) is provided at the bottom of the aeration disc (2).

10. An aeration method for treating wastewater from the production of electronic-grade isopropyl alcohol, comprising: an aeration device for treating wastewater from the production of electronic-grade isopropyl alcohol according to any one of claims 1 to 9, wherein: The following steps are involved: Step 1: The gas required for aeration is delivered to the aeration barrel (1) through the air inlet pipe (101). The air pressure in the aeration barrel (1) will continue to increase and act on the booster air supply component; Step 2: The pressurized air supply component will move, so that the through slot (10) is open, and the gas will enter the aeration plate (2) through the through slot (10) and be discharged through the air supply pipe (3); Step 3: When the air pressure in the aeration barrel (1) continues to rise, the radiation control mechanism is driven to move to adjust the pumping angle of the air supply pipe (3); Step 4: When the air pressure in the aeration barrel (1) exceeds the critical value, under the action of the booster air supply component, the overload reflux mechanism controls the movement of the conduction regulating mechanism to drive the aeration disc (2) to rotate while performing a pressure relief action on the aeration barrel (1).

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