Wastewater recovery treatment device for aluminum hydroxide processing

Abstract

The application relates to the technical field of wastewater recovery treatment, in particular to a wastewater recovery treatment device for aluminum hydroxide processing, which comprises a treatment barrel, a fixed base is fixedly connected to the bottom end of the treatment barrel, an inlet is arranged at the upper end of the treatment barrel, a slag discharge port is arranged at the lower end of the treatment barrel, an exhaust bubble port is communicated with the upper end of the treatment barrel, a liquid outlet is communicated with the lower end of the treatment barrel, a motor is fixedly connected to the center of the upper end of the treatment barrel, and a rotating rod is fixedly connected to the output end of the motor. The wastewater recovery treatment device for aluminum hydroxide processing is characterized in that the functions of stirring, sedimentation and air flotation are integrated in a single device, the rotating block capable of automatically switching states and the self-supplying air backflow prevention system are used, the wastewater treatment process is simplified, the land occupation area and the investment cost are reduced, the interception and recovery effect of fine aluminum hydroxide particles is remarkably improved, and the automatic conversion of the functions can be realized by means of motor speed regulation.

Description

Technical Field

[0001] This invention relates to the field of wastewater recycling and treatment technology, specifically to a wastewater recycling and treatment device for aluminum hydroxide processing. Background Technology

[0002] In the treatment of aluminum hydroxide processing wastewater, inclined plate sedimentation devices are a commonly used structure for solid-liquid separation. Traditional inclined plates have a fixed inclination angle and a single function, only providing sedimentation area. They cannot mix the wastewater during the flocculant addition stage, requiring a separate mixing tank, resulting in a long process flow, large equipment footprint, and high investment costs. Although some improved solutions have made the inclination angle adjustable, the adjustment range is limited. The inclined plate remains stationary during sedimentation, resulting in poor retention of fine aluminum hydroxide particles. These particles are often lost with the effluent, causing resource waste and affecting the effluent quality.

[0003] To further improve the recovery effect of fine particles, existing technologies attempt to introduce air flotation technology into the settling zone, using microbubbles to adhere to particles and carry them to the surface. However, the air flotation device and the inclined plate setter are mostly set up separately. The bubbles are released from the bottom or side of the tank and are independent of the water flow channel in the inclined plate. During the rise of the bubbles, they are significantly hindered by the inclined plate and it is difficult for them to enter the gap between the inclined plate evenly and form effective contact with the downward particles, which will reduce the effect of small particle removal. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a wastewater recovery and treatment device for aluminum hydroxide processing.

[0005] This invention adopts the following technical solution: a wastewater recycling and treatment device for aluminum hydroxide processing, comprising a treatment tank, a fixed base fixedly connected to the bottom end of the treatment tank, an inlet and a slag outlet respectively provided at the upper and lower ends of the treatment tank, an air bubble outlet connected to the upper end of the treatment tank, a liquid outlet connected to the lower end of the treatment tank, a motor fixedly connected to the center of the upper end of the treatment tank, and a rotating rod fixedly connected to the output end of the motor, further comprising: An automatic switching mechanism is provided, which can automatically switch the function of the automatic switching mechanism according to the rotation speed of the rotating rod. The automatic switching mechanism is disposed on the outer wall of the rotating rod and includes a rotating block and an air bag. And an anti-backflow mechanism, used to prevent gas from flowing back from the airbag into the rotating block, the anti-backflow mechanism being disposed within the automatic switching mechanism.

[0006] As a further description of the above technical solution: the automatic switching mechanism includes a fixed shaft, which is fixedly connected to a rotating rod. A rotating block is rotatably mounted on the outer wall of the fixed shaft. A liquid-blocking part is provided on the upper part of the rotating block. A counterweight is fixedly connected to the bottom end of the rotating block. An exhaust groove is provided on one side wall of the liquid-blocking part. An air jet hole is provided in the exhaust groove. A slider is rotatably mounted inside the rotating block. The slider is fixedly connected to the outer wall of the fixed shaft. An air guide groove is connected between the slide groove where the slider is located and the airbag. An L-shaped groove is provided inside the slider. A notch is provided at the end of the slide groove where the slider is located near the airbag. A connecting port is provided in the notch. A baffle is fixedly connected to the lower side of the connecting port on the rotating block. An airbag is fixedly connected to the end of the fixed shaft located inside the rotating rod. The airbag is connected to the connecting port.

[0007] As a further description of the above technical solution: the anti-backflow mechanism includes a rotating block, which is rotatably disposed within a rotating block. A magnetic block is fixedly connected to the rotating block. An air outlet groove is opened inside the fixed shaft, and the air outlet groove is connected to an airbag. A one-way valve is fixedly connected inside the air outlet groove. One end of the rotating block is fixedly connected to the outer wall of the fixed shaft. A telescopic plate is inserted into the end of the rotating block near the fixed shaft. A spring is fixedly connected between the top of the telescopic plate and the rotating block. A limiting block is inserted inside the telescopic plate. A spring is fixedly connected between the end of the spring and the telescopic plate. The limiting block is movably inserted into the rotating block. An inclined sliding surface is opened at the bottom end of the limiting block. A pressing rod abuts against the inclined sliding surface at the bottom end of the limiting block. The pressing rod is slidably disposed inside the pressing rod. The end of the telescopic plate extending outside the rotating block abuts against the outer wall of the fixed shaft.

[0008] As a further description of the above technical solution: the rotating block is arranged with equal spacing between its upper and lower spirals.

[0009] As a further description of the above technical solution: the liquid-blocking part at the top of the rotating block has a larger area than the bottom of the rotating block, so when water impacts the end of the rotating block away from the exhaust groove, the liquid-blocking part is subjected to a greater impact force.

[0010] As a further description of the above technical solution: when the liquid-blocking part is in a vertical state, the counterweight is located at an angle below.

[0011] As a further description of the above technical solution: the end of the magnetic block near the fixed shaft generates attraction with both the telescopic plate and the extrusion rod.

[0012] As a further description of the above technical solution: the sliding groove where the telescopic plate is located is connected to the first slot, the bottom end of the first slot is connected to the bottom of the rotating block, the fixed shaft has a second slot, the first slot and the second slot are connected, the rotating rod has an external connecting groove, and the external connecting groove is connected to the air outside the processing barrel, and the external connecting groove is connected to the second slot.

[0013] This invention provides an improved wastewater recovery and treatment device for aluminum hydroxide processing, which has the following improvements and advantages compared with the prior art: Firstly, this device can automatically switch functions of the rotating block by adjusting the motor speed. At high speed, the liquid baffle is vertical for efficient stirring and mixing. At medium speed, the liquid baffle is tilted to guide the liquid spiral downward to accelerate the settling of large particles. At low speed, it switches to the air flotation mode to remove small particles. One set of equipment integrates the three functions of stirring, settling and air flotation, eliminating the need for a separate mixing tank or air flotation tank, shortening the process flow and reducing the equipment footprint and investment costs. Secondly, it enhances the recovery of fine particles and improves the quality of effluent. During the low-speed settling stage, the air bladder inside the device is compressed and intermittently ejects uniform microbubbles from the jet holes on the rotating block. The bubbles are released from inside the inclined plate structure and form a countercurrent contact with the downward-settling fine particles, resulting in a more thorough adhesion effect. Combined with the baffle to achieve intermittent aeration, it improves the mixing efficiency of bubbles and particles, effectively intercepting the fine aluminum hydroxide particles that are easily lost in traditional inclined plate settling, reducing resource waste and ensuring that the effluent meets the standards. Thirdly: The device features ingenious self-supply and anti-backflow design, saving energy and reducing costs. It utilizes the relative rotation of the rotating block and the fixed shaft to compress the air bladder and generate bubbles, eliminating the need for an additional air pump. The anti-backflow mechanism, through the linkage design of the magnetic block, telescopic plate, limit block, and one-way valve, ensures that gas is forced into the air bladder when the rotating block rotates in the forward direction and does not flow back into the air bladder when it resets in the reverse direction. Instead, it draws in air from the outside to replenish the gas supply, ensuring a continuous and stable supply of bubbles. The overall structure is ingenious, reducing manufacturing costs and operating energy consumption. In summary, this invention integrates stirring, settling, and flotation into a single unit. Utilizing an automatically switching rotating block and a self-supplying anti-backflow system, it simplifies wastewater treatment processes, reduces floor space and investment costs, and significantly improves the retention and recovery of fine aluminum hydroxide particles. The entire process relies on motor speed regulation for automatic function switching, and the internal supply of air bubbles is achieved through a purely mechanical structure, eliminating the need for a separate flotation device and air pump. This not only saves energy and reduces costs but also improves the integration and automation level of the process, demonstrating significant application value. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a perspective sectional view of the processing tank provided in an embodiment of the present invention; Figure 3 A perspective sectional view of the rotating rod provided in an embodiment of the present invention; Figure 4 A perspective sectional view of the rotating block provided in an embodiment of the present invention; Figure 5 A perspective sectional view of a fixed shaft provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the rotating block provided in an embodiment of the present invention; Figure 7 for Figure 3 Enlarged view of point A in the middle; Figure 8 for Figure 4 Enlarged view of point B in the middle; Figure 9 for Figure 5 A magnified view of point C in the middle.

[0015] In the diagram: 1. Processing tank; 2. Fixed base; 3. Feed inlet; 4. Motor; 5. Slag discharge outlet; 6. Rotating rod; 7. Automatic switching mechanism; 71. Rotating block; 72. Fixed shaft; 73. Counterweight; 74. Exhaust trough; 75. Liquid baffle; 76. Airbag; 77. Air guide trough; 78. Sliding block; 79. L-shaped trough; 710. Notch; 711. Baffle; 712. Connecting port; 713. Air jet hole; 8. Anti-backflow mechanism; 81. Rotating block; 82. Magnetic block; 83. Air outlet trough; 84. One-way valve; 85. Telescopic plate; 86. Spring 1; 87. Limiting block; 88. Spring 2; 89. Extrusion rod; 810. Groove 1; 811. Groove 2; 812. External connecting trough; 9. Air bubble discharge port; 10. Liquid outlet. Detailed Implementation

[0016] To make the technical means, creative features, objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific illustrations. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Please see Figure 1 - Figure 9 This invention provides a technical solution: a wastewater recycling and treatment device for aluminum hydroxide processing, comprising a treatment tank 1, a fixed base 2 fixedly connected to the bottom of the treatment tank 1, an inlet 3 and a slag outlet 5 respectively provided at the upper and lower ends of the treatment tank 1, an air bubble outlet 9 connected to the upper end of the treatment tank 1, a liquid outlet 10 connected to the lower end of the treatment tank 1, a motor 4 fixedly connected to the center of the upper end of the treatment tank 1, and a rotating rod 6 fixedly connected to the output end of the motor 4, and further comprising: The automatic switching mechanism 7 can automatically switch the function of the automatic switching mechanism 7 according to the rotation speed of the rotating rod 6. The automatic switching mechanism 7 is set on the outer wall of the rotating rod 6 and includes a rotating block 71 and an airbag 76. And an anti-backflow mechanism 8, used to prevent gas from flowing back from the airbag 76 into the rotating block 71, the anti-backflow mechanism 8 is provided in the automatic switching mechanism 7.

[0018] Specifically, by adjusting the speed of motor 4, this device can automatically switch the function of rotating block 71. At high speed, the liquid baffle 75 is vertical for efficient stirring and mixing. At medium speed, the liquid baffle 75 is tilted to guide the liquid spiral downward and accelerate the settling of large particles. At low speed, it switches to the air flotation mode to remove small particles. One set of equipment integrates the three functions of stirring, settling and air flotation, eliminating the need for a separate mixing tank or air flotation tank, shortening the process flow and reducing the equipment footprint and investment costs.

[0019] Enhanced microparticle recovery improves effluent quality. During the low-speed settling stage, the internal air bladder 76 is compressed and intermittently ejects uniform microbubbles from the jet holes 713 on the rotating block 71. The bubbles are released from inside the inclined plate structure and form a countercurrent contact with the downward-settling microparticles, resulting in a more thorough adhesion effect. Combined with the baffle 711 to achieve intermittent aeration, the mixing efficiency of bubbles and particles is improved. This effectively traps micro-aluminum hydroxide particles that are easily lost in traditional inclined plate settling, reducing resource waste and ensuring that the effluent meets standards.

[0020] The device features ingenious self-supply and anti-backflow design, saving energy and reducing costs. It utilizes the relative rotation of the rotating block 71 and the fixed shaft 72 to compress the air bladder 76 to generate bubbles, eliminating the need for an additional air pump. The anti-backflow mechanism 8, through the linkage design of the magnetic block 82, the telescopic plate 85, the limit block 87, and the one-way valve 84, ensures that gas is forced into the air bladder 76 when the rotating block 81 rotates in the forward direction, and that the gas in the air bladder 76 does not flow back when it is reversed and is replenished by drawing air from the outside, ensuring a continuous and stable supply of bubbles. The overall structure is ingenious, reducing manufacturing costs and operating energy consumption.

[0021] In another embodiment of the present invention, the automatic switching mechanism 7 includes a fixed shaft 72, which is fixedly connected to the rotating rod 6. A rotating block 71 is rotatably disposed on the outer wall of the fixed shaft 72. A liquid-blocking part 75 is provided on the upper part of the rotating block 71. A counterweight block 73 is fixedly connected to the bottom end of the rotating block 71. An exhaust groove 74 is opened on one side wall of the liquid-blocking part 75. An air jet hole 713 is opened in the exhaust groove 74. A slider 78 is rotatably disposed in the rotating block 71. The slider 78 is fixedly connected to the outer wall of the fixed shaft 72. An air guide groove 77 is connected between the slide groove where the slider 78 is located and the airbag 76. An L-shaped groove 79 is opened in the slider 78. A notch 710 is opened at the end of the slide groove where the slider 78 is located near the airbag 76. A connecting port 712 is opened in the notch 710. A baffle 711 is fixedly connected to the lower side of the connecting port 712 on the rotating block 71. An airbag 76 is fixedly connected to the end of the fixed shaft 72 located in the rotating rod 6. The airbag 76 is connected to the connecting port 712.

[0022] The rotating block 71 has equal spacing between its upper and lower spirals.

[0023] The liquid-blocking part 75 at the top of the rotating block 71 has a larger area than the bottom of the rotating block 71. When water impacts the end of the rotating block 71 away from the exhaust groove 74, the liquid-blocking part 75 is subjected to a greater impact force.

[0024] When the liquid-blocking part 75 is in a vertical position, the counterweight 73 is located diagonally below.

[0025] Specifically, by adjusting the speed of motor 4, the rotating block 71 can automatically switch functions. At high speed, the liquid baffle 75 is vertical for efficient stirring and mixing. At medium speed, the liquid baffle 75 is tilted to guide the liquid spiral downwards, accelerating the settling of large particles. At low speed, it switches to the air flotation mode to remove small particles. One set of equipment integrates stirring, settling and air flotation functions, eliminating the need for a separate mixing tank or air flotation tank, shortening the process flow and reducing equipment footprint and investment costs.

[0026] Enhanced microparticle recovery improves effluent quality. During the low-speed settling stage, the internal air bladder 76 is compressed and intermittently ejects uniform microbubbles from the jet holes 713 on the rotating block 71. The bubbles are released from inside the inclined plate structure and form a countercurrent contact with the downward-settling microparticles, resulting in a more thorough adhesion effect. Combined with the baffle 711 to achieve intermittent aeration, the mixing efficiency of bubbles and particles is improved. This effectively traps micro-aluminum hydroxide particles that are easily lost in traditional inclined plate settling, reducing resource waste and ensuring that the effluent meets standards.

[0027] In another embodiment of the present invention, the anti-backflow mechanism 8 includes a rotating block 81, which is rotatably disposed within a rotating block 71. A magnetic block 82 is fixedly connected to the rotating block 71. An air outlet groove 83 is provided inside the fixed shaft 72, which communicates with the airbag 76. A one-way valve 84 is fixedly connected inside the air outlet groove 83. One end of the rotating block 81 is fixedly connected to the outer wall of the fixed shaft 72. A telescopic plate 85 is inserted into the end of the rotating block 81 near the fixed shaft 72. The top end of the telescopic plate 85 is connected to the rotating block 81. A spring 86 is fixedly connected to the telescopic plate 85. A limiting block 87 is inserted inside the telescopic plate 85. A spring 88 is fixedly connected between one end of the spring 86 inside the telescopic plate 85 and the telescopic plate 85. The limiting block 87 is movably inserted into the rotating block 81. A sloping sliding surface is opened at the bottom end of the limiting block 87. A pressing rod 89 is in contact with the sloping sliding surface at the bottom end of the limiting block 87. The pressing rod 89 is slidably disposed inside the pressing rod 89. One end of the telescopic plate 85 extending outside the rotating block 81 is in contact with the outer wall of the fixed shaft 72.

[0028] The end of the magnetic block 82 near the fixed shaft 72 generates attraction with both the telescopic plate 85 and the pressing rod 89.

[0029] The sliding groove where the telescopic plate 85 is located is connected to the slot 810. The bottom end of the slot 810 is connected to the rotating groove where the rotating block 81 is located. The fixed shaft 72 has a slot 811. The slot 810 and the slot 811 are connected. The rotating rod 6 has an external connecting groove 812. The external connecting groove 812 is connected to the air outside the processing tank 1. The external connecting groove 812 is connected to the slot 811.

[0030] Specifically, the device features ingenious self-supply and anti-backflow design, saving energy and reducing costs. It utilizes the relative rotation of the rotating block 71 and the fixed shaft 72 to compress the air bladder 76 to generate bubbles, eliminating the need for an additional air pump. The anti-backflow mechanism 8, through the linkage design of the magnetic block 82, the telescopic plate 85, the limit block 87, and the one-way valve 84, ensures that gas is forced into the air bladder 76 when the rotating block 81 rotates in the forward direction, and that the gas in the air bladder 76 does not flow back when it is reversed and is replenished by drawing air from the outside, ensuring a continuous and stable supply of bubbles. The overall structure is ingenious, reducing manufacturing costs and operating energy consumption.

[0031] Working principle: When using this device, first close the water outlet pipe connected to the liquid outlet 10 and close the air vent pipe connected to the air vent 9. Then, add the corresponding liquid into the inner cavity of the processing tank 1 from the feed inlet 3, so that the liquid level is at the air vent 9. Then start the motor 4. The motor 4 will drive the rotating rod 6 to rotate. The rotating rod 6 will drive the rotating block 71 to rotate. When it is necessary to stir and mix the liquid, first make the rotating rod 6 rotate at high speed, so that the end of the rotating block 71 away from the exhaust groove 74 receives a larger water impact force. Also, because the impact force received at the liquid baffle 75 is even greater, the liquid baffle 75 can rotate counterclockwise. Due to the limit of the slider 78, the liquid baffle 75 remains in a vertical state, which can make the stirring and mixing effect of the liquid better when the rotating block 71 rotates. When large particles need to settle, the rotation speed of the rotating rod 6 is reduced to medium speed, thereby reducing the water impact force on the liquid-blocking part 75. Due to the weight of the counterweight 73, the counterweight 73 rotates towards the lower side of the fixed shaft 72 due to its own weight. The liquid-blocking part 75 rotates clockwise, so that when the rotating block 71 rotates, the liquid will flow downward from the side of the liquid-blocking part 75 where the vent groove 74 is opened and the side away from the vent groove 74, thereby enabling the liquid to flow downward in a spiral, which can accelerate the settling speed of large particles. When it is necessary to remove the remaining suspended small particles, the rotation speed of the rotating rod 6 is further reduced to a low speed, so that the impact force of the water is further reduced, allowing the counterweight 73 and the liquid-retaining part 75 to continue rotating clockwise. During the rotation, the rotating block 81 will also rotate relative to the rotating block 71, so that the gas in the rotating groove where the rotating block 81 is located is forced into the air bag 76, causing the air bag 76 to continue to expand. When the slider 78 rotates to the notch 710, the L-shaped groove 79 connects with the notch 710. Due to the elasticity of the air bag 76, the gas inside the air bag 76... The gas can be automatically pressed into the connecting port 712, and then the gas passes through the L-shaped groove 79, the air guide groove 77 and the jet hole 713. The gas is ejected from multiple jet holes 713. When ejected, small bubbles are generated. The bubbles will automatically float upward. At this time, due to settling, the small particles will move downward, so that the bubbles and small particles have more contact and improve the effect of the small particles floating with the bubbles. Due to the setting of multiple baffles 711, the L-shaped groove 79 will abut against each baffle 711, so that the bubbles are ejected intermittently, which can improve the mixing effect. Furthermore, when rotating at low speed, it can prevent large particles at the bottom from floating to the surface and prevent blockage when discharging bubbles and small particles. When bubbles are sprayed out while settling, the gas and most of the small particles are located in the center, allowing for more thorough contact. When the liquid impacts the upper end of the rotating block 71 downwards, it can push the bubbles downwards, allowing the bubbles sprayed out by the upper rotating block 71 to also contact the small particles on the lower side, further improving the removal effect of small particles. When the rotating block 81 rotates to the magnetic block 82, the magnetic block 82 moves the pressing rod 89 upward. The pressing rod 89 presses against the inclined sliding surface on the limiting block 87, causing the limiting block 87 to disengage from the rotating block 81. Then, the magnetic block 82 attracts the telescopic plate 85 upward, connecting the space in the groove where the rotating block 81 is located with the slot 811. This ensures that when the rotating block 81 rotates in the reverse direction, the gas in the airbag 76 will not be extracted, allowing the rotating block 81 to rotate smoothly. The one-way valve 84 ensures that gas can only enter the airbag 76. The gas inside will not be ejected from the one-way valve 84. When the rotating block 81 rotates in the opposite direction to the other end, the attraction force of the telescopic plate 85 on the magnetic block 82 is greatly reduced. Due to the elastic force of the spring 86, the telescopic plate 85 moves downward and the limiting block 87 is inserted into the rotating block 81. When the rotating block 81 rotates towards the magnetic block 82 again, the bottom end of the telescopic plate 85 can press against the outer edge of the fixed shaft 72, which can completely compress the gas into the airbag 76. Only when the squeezing rod 89 is located under the magnetic block 82 can the squeezing rod 89 squeeze the limiting block 87 inward. By repeatedly adjusting the speed of motor 4, bubbles can be repeatedly flushed out without the need for an additional air pump, thus reducing costs. When small particles float to the surface with the bubbles, the bubble discharge port 9 is opened, and the bubbles and small particles are discharged from the bubble discharge port 9. Then, the liquid outlet 10 is opened, and the purified water after sedimentation is discharged from the liquid outlet 10. Finally, the large particles that settle at the bottom can be discharged from the slag discharge port 5.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater recycling and treatment device for aluminum hydroxide processing, comprising a treatment tank (1), a fixed base (2) fixedly connected to the bottom end of the treatment tank (1), an inlet (3) and a slag outlet (5) respectively provided at the upper and lower ends of the treatment tank (1), an air bubble outlet (9) connected to the upper end of the treatment tank (1), a liquid outlet (10) connected to the lower end of the treatment tank (1), a motor (4) fixedly connected to the center of the upper end of the treatment tank (1), and a rotating rod (6) fixedly connected to the output end of the motor (4), characterized in that, Also includes: The automatic switching mechanism (7) can automatically switch the function of the automatic switching mechanism (7) according to the rotation speed of the rotating rod (6). The automatic switching mechanism (7) is provided on the outer wall of the rotating rod (6). The automatic switching mechanism (7) includes a rotating block (71) and an airbag (76). And an anti-backflow mechanism (8) for preventing gas from flowing back from the airbag (76) into the rotating block (71), the anti-backflow mechanism (8) being disposed within the automatic switching mechanism (7).

2. The wastewater recovery and treatment device for aluminum hydroxide processing according to claim 1, characterized in that: The automatic switching mechanism (7) includes a fixed shaft (72), which is fixedly connected to the rotating rod (6). A rotating block (71) is rotatably mounted on the outer wall of the fixed shaft (72). A liquid-blocking part (75) is provided on the upper part of the rotating block (71). A counterweight (73) is fixedly connected to the bottom end of the rotating block (71). An exhaust groove (74) is provided on one side wall of the liquid-blocking part (75). An air jet hole (713) is provided in the exhaust groove (74). A slider (78) is rotatably mounted in the rotating block (71). The slider (78) is fixedly connected to the outer wall of the fixed shaft (72). The slide groove where the slider (78) is located is connected to the air bag (76) by an air guide groove (77). An L-shaped groove (79) is opened in the slider (78). A notch (710) is opened at one end of the slide groove where the slider (78) is located near the air bag (76). A connecting port (712) is opened in the notch (710). A baffle (711) is fixedly connected to the lower side of the connecting port (712) on the rotating block (71). An air bag (76) is fixedly connected to one end of the fixed shaft (72) located in the rotating rod (6). The air bag (76) is connected to the connecting port (712).

3. The wastewater recovery and treatment device for aluminum hydroxide processing according to claim 2, characterized in that: The anti-backflow mechanism (8) includes a rotating block (81), which is rotatably disposed within a rotating block (71). A magnetic block (82) is fixedly connected to the rotating block (71). An air outlet groove (83) is provided inside the fixed shaft (72), which is connected to the airbag (76). A one-way valve (84) is fixedly connected inside the air outlet groove (83). One end of the rotating block (81) is fixedly connected to the outer wall of the fixed shaft (72). A telescopic plate (85) is inserted into the end of the rotating block (81) near the fixed shaft (72). The top of the telescopic plate (85) is fixedly connected to the rotating block (81). A spring (86) is connected to the telescopic plate (85), and a limiting block (87) is inserted inside the telescopic plate (85). One end of the spring (86) located inside the telescopic plate (85) is fixedly connected to the telescopic plate (85) with a spring (88). The limiting block (87) is movably inserted into the rotating block (81). The bottom end of the limiting block (87) has an inclined sliding surface. The inclined sliding surface at the bottom end of the limiting block (87) abuts against a pressing rod (89). The pressing rod (89) is slidably disposed inside the pressing rod (89). One end of the telescopic plate (85) extending outside the rotating block (81) abuts against the outer wall of the fixed shaft (72).

4. The wastewater recovery and treatment device for aluminum hydroxide processing according to claim 2, characterized in that: The rotating block (71) is arranged with equal spacing between its upper and lower spirals.

5. The wastewater recovery and treatment device for aluminum hydroxide processing according to claim 2, characterized in that: The liquid-blocking part (75) at the top of the rotating block (71) has a larger area than the bottom of the rotating block (71). When water impacts the end of the rotating block (71) away from the exhaust groove (74), the liquid-blocking part (75) is subjected to a greater impact force.

6. The wastewater recovery and treatment device for aluminum hydroxide processing according to claim 2, characterized in that: When the liquid-blocking part (75) is in a vertical position, the counterweight (73) is located diagonally below.

7. The wastewater recovery and treatment device for aluminum hydroxide processing according to claim 3, characterized in that: The end of the magnetic block (82) near the fixed shaft (72) generates attraction with both the telescopic plate (85) and the extrusion rod (89).

8. The wastewater recovery and treatment device for aluminum hydroxide processing according to claim 3, characterized in that: The sliding groove where the telescopic plate (85) is located is connected to the first slot (810). The bottom end of the first slot (810) is connected to the rotating groove where the rotating block (81) is located. The fixed shaft (72) has a second slot (811) inside. The first slot (810) and the second slot (811) are connected. The rotating rod (6) has an outer connecting groove (812) inside. The outer connecting groove (812) is connected to the air outside the processing barrel (1). The outer connecting groove (812) is connected to the second slot (811).

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