Fluorine-resistant, dilute-acid-resistant and concentrated-acid-resistant anti-corrosion structure

Abstract

The invention belongs to the technical field of fluorine-resistant, acid-resistant and corrosion-resistant, and particularly relates to a fluorine-resistant, dilute-acid-resistant and concentrated-acid-resistant corrosion-resistant structure which comprises a sewage treatment tank, a water inlet pipe, a discharge pipe and an access hole, one end of the sewage treatment tank is connected with the water inlet pipe, the other end of the sewage treatment tank is connected with the discharge pipe, and the access hole is formed in the top of the sewage treatment tank; a flocculation precipitation cavity is formed in the sewage treatment tank, a neutralization cavity is formed in the sewage treatment tank, and an online fluorine ion concentration meter is mounted at the top of the sewage treatment tank. According to the invention, the inner primer has waterproof and anti-corrosion effects, the inner intermediate coating has higher chemical stability, phenolic resin is not easy to erode by acid and alkali after curing, the acid resistance of the coating is further enhanced, the inner finish paint uses acrylic acid waterproof paint to effectively resist water, the zinc coating slows down the corrosion speed of a base material, the outer intermediate coating has excellent corrosion resistance, and the service life of the coating is prolonged. The outer finish paint has good water resistance, and the corrosion resistance and dilute acid resistance of the box wall can be effectively improved through multiple coatings.

Description

Technical Field

[0001] The invention belongs to the technical field of fluorine-resistant, acid-resistant and anti-corrosion, and in particular relates to a fluorine-resistant, dilute-acid-resistant and concentrated-acid-resistant anti-corrosion structure. Background Art

[0002] A sewage treatment tank is a special container that integrates sewage treatment equipment into the tank body. It plays a vital role in the sewage treatment system. A sewage treatment tank is usually a rectangular or square container made of high-strength materials (such as fiberglass). It has a compact structure and integrates sewage treatment equipment such as filtration and disinfection. It can convert wastewater into water resources that meet discharge standards or can be reused.

[0003] The advantages of sewage treatment tanks are their strong mobility, high treatment efficiency, and small footprint. However, in practical applications, they also face some challenges, such as equipment maintenance, operating costs, and treatment effects. Therefore, when selecting and using sewage treatment tanks, it is necessary to comprehensively consider factors such as performance, price, and maintenance costs. In order to ensure the normal operation and extend the service life of sewage treatment tanks, regular maintenance and care are required. This includes checking the operating status of the equipment, cleaning the filter device, replacing damaged parts, etc. At the same time, it is also necessary to regularly monitor and evaluate the treatment effect to ensure that the effluent water quality meets the relevant standards.

[0004] When existing sewage treatment tanks are used for sewage treatment in industrial manufacturers, the sewage usually carries fluoride ions, which react with the sewage treatment tanks. At the same time, the acidic sewage will corrode the sewage treatment tanks, which will cause damage to the sewage treatment tanks, resulting in damage to the equipment, and then causing sewage inside the sewage treatment tanks to leak, which will cause the soil around the sewage treatment tanks to be contaminated. Summary of the invention

[0005] The purpose of the present invention is to provide a fluorine-resistant, dilute acid-resistant and concentrated acid-resistant anti-corrosion structure, aiming to solve the problem in the prior art that when the existing sewage treatment tank is used for sewage treatment in industrial manufacturers, the sewage usually carries fluoride ions, and the fluoride ions react with the sewage treatment tank, and the acidic sewage corrodes the sewage treatment tank, which will cause damage to the sewage treatment tank, thereby causing damage to the equipment, and further causing the sewage inside the sewage treatment tank to leak, which will cause the soil around the sewage treatment tank to be polluted.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fluorine-resistant, dilute acid-resistant and concentrated acid-resistant anti-corrosion structure, comprising a sewage treatment box, an inlet pipe, a discharge pipe and an inspection port, one end of the sewage treatment box is connected to the inlet pipe, the other end of the sewage treatment box is connected to the discharge pipe, and the top of the sewage treatment box is provided with an inspection port; a flocculation and sedimentation chamber is provided inside the sewage treatment box, a neutralization chamber is provided inside the sewage treatment box, an online fluorine ion concentration meter is installed on the top of the sewage treatment box, a fluorine ion concentration detection head is connected to the end of the online fluorine ion concentration meter, and the fluorine ion concentration detection head is connected to the bottom of the inner wall of the flocculation and sedimentation chamber, a filter plate slot is provided on the surface of the sewage treatment box, a filter plate is plugged into the filter plate slot, a silo is provided on the top of the sewage treatment box, a discharge port is provided at the bottom of the silo, an automatic unloading mechanism is provided on the bottom side of the silo, and a feed port is provided on the upper surface of the sewage treatment box near the discharge port.

[0007] As a preferred fluorine-resistant, dilute acid-resistant and concentrated acid-resistant anti-corrosion structure of the present invention, the automatic unloading mechanism includes a baffle, a guide circular hole, a guide rod and an electric telescopic rod. A baffle is provided at the bottom of the silo near the discharge port, and a guide circular hole is opened on the surface of the baffle. A guide rod passes through the inside of the guide circular hole. The guide rod is connected to the side surface of the silo, and an electric telescopic rod is installed between the baffle and the sewage treatment tank.

[0008] As a preferred fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure of the present invention, the guide circular holes and the guide rods are symmetrically arranged on both sides of the baffle, and the baffle is slidably connected to the guide rods via the guide circular holes.

[0009] As a preferred anti-corrosion structure resistant to fluorine, dilute acid, and concentrated acid of the present invention, a telescopic structure is formed between the baffle and the electric telescopic rod.

[0010] As a preferred fluorine-resistant, dilute-acid-resistant and concentrated-acid-resistant anti-corrosion structure of the present invention, the side surface of the sewage treatment tank is connected to a solution tank, the bottom of the solution tank is connected to a connecting pipe, the end of the connecting pipe is connected to a drain pipe, the upper surface of the drain pipe is connected to a nozzle, and a solenoid valve is installed in the middle of the connecting pipe. A first bearing is embedded and installed on the surface of the sewage treatment tank, an active stirring rod is connected through the interior of the first bearing, and a driving pulley is sleeved on the end of the active stirring rod. A second bearing is embedded and installed on the surface of the sewage treatment tank, a driven stirring rod is connected through the interior of the second bearing, and a driven pulley is sleeved on the end of the driven stirring rod, and belt rings are sleeved on the surfaces of the driving pulley and the driven pulley, and a power motor is connected to the end of the active stirring rod, an online pH meter is installed on the side surface of the sewage treatment tank, a pH detection head is connected to the side surface of the online pH meter, and the pH detection head is connected to the bottom of the inner wall of the neutralization chamber.

[0011] As a preferred fluorine-resistant, dilute-acid-resistant and concentrated-acid-resistant anti-corrosion structure of the present invention, the active stirring rod forms a rotating structure with the sewage treatment tank through the first bearing, and the driven stirring rod forms a rotating structure with the sewage treatment tank through the second bearing.

[0012] As a preferred fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anti-corrosion structure of the present invention, the driving pulley and the driven pulley form a linkage structure through a belt loop, and the flocculation sedimentation chamber and the neutralization chamber form a connecting structure.

[0013] As a preferred fluorine-resistant, dilute acid-resistant, and concentrated acid-resistant anti-corrosion structure of the present invention, the model of the online pH meter is ZRN-PH-C, and the model of the online fluoride ion concentration meter is PFG-3085.

[0014] As a preferred fluorine-resistant, dilute acid-resistant and concentrated acid-resistant anti-corrosion structure of the present invention, the sewage treatment tank includes a tank wall, an inner primer, an inner middle coating, an inner topcoat, a galvanized layer, an outer middle coating and an outer topcoat, the side surface of the tank wall is connected with the inner primer, the side surface of the inner primer is connected with the inner middle coating, the side surface of the inner middle coating is connected with the inner topcoat, the other side of the tank wall is connected with the galvanized layer, the side surface of the galvanized layer is connected with the outer middle coating, and the side surface of the outer middle coating is connected with the outer topcoat.

[0015] As a preferred fluorine-resistant, dilute acid-resistant and concentrated acid-resistant anti-corrosion structure of the present invention, the main component of the inner primer is cyanamide polymer, the main component of the inner middle coating is phenolic resin, the inner topcoat adopts acrylic waterproof coating, the main component of the outer middle coating is composite oxide nanodispersion, and the main component of the outer paint is acrylic polymer.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the fluoride ion concentration detection head can detect the fluoride ion concentration in the sewage. When the fluoride ion concentration in the sewage exceeds the standard, the electric telescopic rod is controlled to retract. When the electric telescopic rod retracts, the baffle plate can be driven to move in a direction away from the silo. At this time, the polyaluminium chloride particles in the silo can enter the flocculation and precipitation chamber and hydrolyse to generate aluminium hydroxide colloid. The aluminium hydroxide colloid can adsorb, exchange ions and perform complex precipitation on the fluoride ions, thereby removing the fluoride ions in the sewage. At this time, the precipitate can be filtered through the filter plate, thereby improving the fluoride resistance of the sewage treatment box. After the sewage enters the neutralization chamber, the pH value of the sewage is tested through the PH detection head. When the acidity in the sewage is strong, the solenoid valve is activated. At this time, the sodium hydroxide solution in the solution tank can enter the discharge pipe from the connecting pipe and be sprayed out through the nozzle. When the power motor is running, it can drive the active stirring rod to rotate and drive the driven stirring rod to rotate through the active pulley, belt ring and driven pulley. The rotation of the active stirring rod and the driven stirring rod can accelerate the neutralization reaction, so that the pH value of the sewage can be adjusted to avoid the corrosion of the tank wall by the strong acidity in the sewage, thereby improving the concentrated acid resistance of the sewage treatment tank; The inner primer of the box wall has the effect of waterproof and anti-corrosion, the inner middle coating has high chemical stability, and the hydroxyl and methyl groups in the phenolic resin after curing also have good stability. These groups are not easily corroded by acids and alkalis, which further enhances the acid resistance of the coating. The inner topcoat uses acrylic waterproof coating, which can effectively waterproof, which can effectively improve the corrosion resistance of the inner wall of the box against dilute acid; The galvanized layer of the box wall can isolate the box wall from direct contact with oxygen, moisture, acid, alkali and other substances in the external environment, thereby slowing down the corrosion rate of the substrate. The outer coating of the box wall has excellent corrosion resistance, and the outer paint has good water-proof properties, which can effectively provide waterproof protection for the outer coating, thus effectively improving the corrosion resistance of the outer wall of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is a cross-sectional view of the internal structure of the present invention; Figure 4 It is a partial cross-sectional view of the first connection structure of the present invention; Figure 5 It is a partial cross-sectional view of the second connection structure of the present invention; Figure 6 It is a cross-sectional view of the feeding structure of the present invention; Figure 7 This is an exploded view of the feeding connection structure of the present invention; Figure 8 This is an exploded view of the connection structure between the present invention and the silo baffle; Fig. 9 It is a schematic diagram of the box wall structure of the present invention.

[0018] In the figure: 1. Sewage treatment tank; 101. Tank wall; 102. Inner primer; 103. Inner middle coating; 104. Inner topcoat; 105. Galvanized layer; 106. Outer middle coating; 107. Outer paint; 2. Water inlet pipe; 3. Discharge pipe; 4. Inspection port; 5. Flocculation sedimentation chamber; 6. Neutralization chamber; 7. Online fluoride ion concentration meter; 8. Fluoride ion concentration detection head; 9. Filter plate slot; 10. Filter plate; 11. Silo; 12. Discharge port; 13. Baffle; 14. Guide circular hole; 15. Guide rod; 16. Electric telescopic rod; 17. Feed inlet; 18. Solution tank; 19. Connecting pipe; 20. Drain pipe; 21. Nozzle; 22. Solenoid valve; 23. First bearing; 24. Active stirring rod; 25. Active pulley; 26. Second bearing; 27. Driven stirring rod; 28. Driven pulley; 29. ​​Belt ring; 30. Power motor; 31. Online pH meter; 32. pH detection head. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 9 The present invention provides the following technical solutions: a fluorine-resistant, dilute-acid-resistant and concentrated-acid-resistant anticorrosion structure, comprising a sewage treatment box 1, an inlet pipe 2, a discharge pipe 3 and an inspection port 4, wherein one end of the sewage treatment box 1 is connected to the inlet pipe 2, the other end of the sewage treatment box 1 is connected to the discharge pipe 3, and the top of the sewage treatment box 1 is provided with an inspection port 4; a flocculation and sedimentation chamber 5 is provided inside the sewage treatment box 1, a neutralization chamber 6 is provided inside the sewage treatment box 1, an online fluoride ion concentration meter 7 is installed on the top of the sewage treatment box 1, a fluoride ion concentration detection head 8 is connected to the end of the online fluoride ion concentration meter 7, and the fluoride ion concentration detection head 8 is connected to the bottom of the inner wall of the flocculation and sedimentation chamber 5, a filter plate slot 9 is provided on the surface of the sewage treatment box 1, a filter plate 10 is inserted inside the filter plate slot 9, a silo 11 is provided on the top of the sewage treatment box 1, a discharge port 12 is provided at the bottom of the silo 11, an automatic unloading mechanism is provided on the bottom side of the silo 11, and a feed port 17 is provided on the upper surface of the sewage treatment box 1 near the discharge port 12.

[0021] Preferably: the automatic unloading mechanism includes a baffle 13, a guide circular hole 14, a guide rod 15 and an electric telescopic rod 16. A baffle 13 is provided at the bottom of the silo 11 near the discharge port 12. A guide circular hole 14 is opened on the surface of the baffle 13. A guide rod 15 passes through the inside of the guide circular hole 14. The guide rod 15 is connected to the side surface of the silo 11. An electric telescopic rod 16 is installed between the baffle 13 and the sewage treatment tank 1.

[0022] When in use, the baffle 13 can move laterally due to the force. After the baffle 13 moves laterally, the polyaluminium chloride particles can enter the flocculation and sedimentation chamber 5 through the discharge port 12 and the feed port 17, thereby achieving a flocculation and sedimentation reaction.

[0023] Preferably, the guide circular holes 14 and the guide rods 15 are symmetrically arranged on both sides of the baffle 13 , and the baffle 13 is slidably connected to the guide rods 15 via the guide circular holes 14 .

[0024] During specific use, when the baffle 13 is subjected to an action force, the guide circular hole 14 can be driven to slide on the surface of the guide rod 15 , so that the movement direction of the baffle 13 can be limited.

[0025] Preferably, a telescopic structure is formed between the baffle 13 and the electric telescopic rod 16 .

[0026] During specific use, the electric telescopic rod 16 can generate a pulling force on the baffle 13 when it is contracted, and the baffle 13 can move laterally under the pulling force.

[0027] Preferably: a solution tank 18 is connected to the side surface of the sewage treatment tank 1, a connecting pipe 19 is connected to the bottom of the solution tank 18, a drain pipe 20 is connected to the end of the connecting pipe 19, a nozzle 21 is connected to the upper surface of the drain pipe 20, a solenoid valve 22 is installed in the middle of the connecting pipe 19, a first bearing 23 is embedded and installed on the surface of the sewage treatment tank 1, an active stirring rod 24 is connected through the interior of the first bearing 23, and a driving pulley 25 is sleeved on the end of the active stirring rod 24, a second bearing 26 is embedded and installed on the surface of the sewage treatment tank 1, a driven stirring rod 27 is connected through the interior of the second bearing 26, a driven pulley 28 is sleeved on the end of the driven stirring rod 27, a belt ring 29 is sleeved on the surfaces of the driving pulley 25 and the driven pulley 28, a power motor 30 is connected to the end of the active stirring rod 24, an online pH meter 31 is installed on the side surface of the sewage treatment tank 1, a pH detection head 32 is connected to the side surface of the online pH meter 31, and the pH detection head 32 is connected to the bottom of the inner wall of the neutralization chamber 6.

[0028] Preferably, the active stirring rod 24 forms a rotating structure with the sewage treatment tank 1 through the first bearing 23 , and the driven stirring rod 27 forms a rotating structure with the sewage treatment tank 1 through the second bearing 26 .

[0029] During specific use, the power motor 30 can drive the active stirring rod 24 to rotate when it is running, and the rotation of the active stirring rod 24 can improve the neutralization reaction of sewage.

[0030] Preferably, the driving pulley 25 and the driven pulley 28 form a linkage structure through the belt loop 29, and the flocculation sedimentation chamber 5 and the neutralization chamber 6 form a communication structure.

[0031] During specific use, the active stirring rod 24 can rotate to drive the active pulley 25 to rotate, the active pulley 25 can rotate to drive the driven pulley 28 through the belt ring 29, and the driven pulley 28 can rotate to drive the driven stirring rod 27.

[0032] Preferably, the model of the online pH meter 31 is ZRN-PH-C, and the model of the online fluoride ion concentration meter 7 is PFG-3085.

[0033] Preferably: the sewage treatment tank 1 includes a tank wall 101, an inner primer 102, an inner mid-coat 103, an inner topcoat 104, a galvanized layer 105, an outer mid-coat 106 and an outer topcoat 107, the side surface of the tank wall 101 is connected to the inner primer 102, the side surface of the inner primer 102 is connected to the inner mid-coat 103, the side surface of the inner mid-coat 103 is connected to the inner topcoat 104, the other side of the tank wall 101 is connected to the galvanized layer 105, the side surface of the galvanized layer 105 is connected to the outer mid-coat 106, and the side surface of the outer mid-coat 106 is connected to the outer topcoat 107.

[0034] When used specifically, the inner primer 102 has a waterproof and anti-corrosion effect, and the phenolic resin of the inner middle coating 103 is a high molecular polymer with high chemical stability. After curing, the hydroxyl and methyl groups in the phenolic resin also have good stability and are not easily corroded by acids and alkalis, further enhancing the acid resistance of the coating. The inner topcoat 104 uses acrylic waterproof coating to effectively waterproof, which can effectively improve the acid resistance and anti-corrosion of the inner wall of the box wall 101. Preferably, the main component of the inner primer 102 is cyanopolymer, the main component of the inner middle coating 103 is phenolic resin, the inner topcoat 104 adopts acrylic waterproof coating, the main component of the outer middle coating 106 is composite oxide nano-dispersion, and the main component of the outer coating 107 is acrylic polymer.

[0035] During specific use, the galvanized layer 105 can isolate the box wall 101 from direct contact with oxygen, moisture, acid, alkali and other substances in the external environment, thereby slowing down the corrosion rate of the substrate. The outer coating 106 has excellent corrosion resistance and can protect the galvanized layer 105. The outer paint 107 has good water-proof properties and can effectively provide waterproof protection for the outer coating 106, which can effectively improve the corrosion resistance of the outer wall of the box wall 101.

[0036] Working principle: when using the fluorine-resistant, dilute acid-resistant and concentrated acid-resistant anticorrosion structure, first add polyaluminium chloride particles to the inside of the silo 11, and inject sodium hydroxide solution into the solution tank 18. When the sewage enters the flocculation sedimentation chamber 5 through the water inlet pipe 2, the fluoride ion concentration in the sewage is first detected by the fluoride ion concentration detection head 8. When the fluoride ion concentration in the sewage exceeds the standard, it can be displayed on the online fluoride ion concentration meter 7. At this time, the operation of the electric telescopic rod 16 can be intelligently controlled. The electric telescopic rod 16 can be retracted during transportation. When the electric telescopic rod 16 is retracted, it can drive the baffle 13 to move away from the silo 11. When the baffle 13 moves laterally, the discharge port 12 can be exposed. At this time, the polyaluminium chloride particles in the silo 11 can enter the flocculation sedimentation chamber 5 through the discharge port 12 and the feed port 17. At this time, the aluminium hydroxide colloid generated by the hydrolysis of the polyaluminium chloride particles can adsorb, exchange ions and perform complex precipitation on fluoride ions through the aluminium hydroxide colloid, thereby removing the fluoride ions in the sewage. At this time, the precipitate can be filtered through the filter plate 10; The sewage defluorinated can enter the neutralization chamber 6 from the flocculation sedimentation chamber 5. At this time, the pH value of the sewage can be detected by the pH detection head 32. When the pH detection head 32 detects that the acidity in the sewage is strong, it can be displayed on the online pH meter 31. At this time, the solenoid valve 22 is started to form a passage in the connecting pipe 19, and the sodium hydroxide solution in the solution tank 18 can enter the discharge pipe 20 from the connecting pipe 19 and be sprayed out through the nozzle 21. At the same time, when the power motor 30 is running, it can drive the active stirring rod 24 to rotate inside the first bearing 23. The rotation of the active stirring rod 24 can drive the active pulley 25 to rotate. The rotation of the active pulley 25 can drive the driven pulley 28 to rotate through the belt ring 29. The rotation of the driven pulley 28 can drive the driven stirring rod 27 to rotate inside the second bearing 26. In this way, the neutralization reaction can be accelerated by the rotation of the active stirring rod 24 and the driven stirring rod 27. In this way, the pH value of the sewage can be adjusted to prevent the excessive acidity in the sewage from corroding the tank wall 101. The inner primer 102 of the box wall 101 is a two-component polymer molecule with a cyanopolymer as the base material and modified epoxy resin emulsion, and has the effect of waterproofing and anti-corrosion. The phenolic resin of the inner middle coating 103 is a high molecular polymer, and the molecular structure of the resin contains a large number of aromatic rings and heterocycles. These structures make the phenolic resin have high chemical stability. The hydroxyl and methyl groups in the phenolic resin after curing also have good stability. These groups are not easily corroded by acids and alkalis, which further enhances the acid resistance of the coating. In addition, the inner topcoat 104 uses acrylic waterproof coating to effectively waterproof, which can effectively improve the acid resistance and anti-corrosion of the inner wall of the box wall 101. The galvanized layer 105 of the box wall 101 can isolate the box wall 101 from direct contact with oxygen, moisture, acid and alkali in the external environment, thereby slowing down the corrosion rate of the substrate, and the outer middle coating 106 of the box wall 101 has excellent corrosion resistance, which can further effectively avoid corrosion from moisture, acid rain and salt spray, thereby protecting the galvanized layer 105, and the outer paint 107 has good water-proof properties, which can effectively provide waterproof protection for the outer middle coating 106, thereby effectively improving the corrosion resistance of the outer wall of the box wall 101.

[0037] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure, comprising a sewage treatment tank (1), a water inlet pipe (2), a discharge pipe (3), and an inspection port (4), characterized in that: One end of the sewage treatment tank (1) is connected to a water inlet pipe (2), the other end of the sewage treatment tank (1) is connected to a discharge pipe (3), and a maintenance port (4) is provided on the top of the sewage treatment tank (1); A flocculation and sedimentation chamber (5) is provided inside the sewage treatment box (1), a neutralization chamber (6) is provided inside the sewage treatment box (1), an online fluorine ion concentration meter (7) is installed on the top of the sewage treatment box (1), a fluorine ion concentration detection head (8) is connected to the end of the online fluorine ion concentration meter (7), and the fluorine ion concentration detection head (8) is connected to the bottom of the inner wall of the flocculation and sedimentation chamber (5), a filter plate slot (9) is provided on the surface of the sewage treatment box (1), a filter plate (10) is inserted inside the filter plate slot (9), a silo (11) is provided on the top of the sewage treatment box (1), a discharge port (12) is provided at the bottom of the silo (11), an automatic unloading mechanism is provided on the bottom side of the silo (11), and a feed port (17) is provided on the upper surface of the sewage treatment box (1) near the discharge port (12).

2. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 1, characterized in that: The automatic unloading mechanism comprises a baffle (13), a guide circular hole (14), a guide rod (15) and an electric telescopic rod (16); a baffle (13) is arranged at the bottom of the silo (11) near the discharge port (12); a guide circular hole (14) is opened on the surface of the baffle (13); a guide rod (15) penetrates the inside of the guide circular hole (14); the guide rod (15) is connected to the side surface of the silo (11); and an electric telescopic rod (16) is installed between the baffle (13) and the sewage treatment tank (1).

3. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 2, characterized in that: The guide circular holes (14) and the guide rods (15) are symmetrically arranged on both sides of the baffle plate (13), and the baffle plate (13) is slidably connected to the guide rods (15) via the guide circular holes (14).

4. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 2, characterized in that: A telescopic structure is formed between the baffle (13) and the electric telescopic rod (16).

5. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 1, characterized in that: The side surface of the sewage treatment tank (1) is connected to a solution tank (18), the bottom of the solution tank (18) is connected to a connecting pipe (19), the end of the connecting pipe (19) is connected to a drainage pipe (20), the upper surface of the drainage pipe (20) is connected to a nozzle (21), and a solenoid valve (22) is installed in the middle of the connecting pipe (19). A first bearing (23) is embedded and installed on the surface of the sewage treatment tank (1), and an active stirring rod (24) is connected to the inside of the first bearing (23), and a driving pulley (25) is sleeved on the end of the active stirring rod (24). The surface of the sewage treatment tank (1) A second bearing (26) is mounted on the surface of the sewage treatment tank (1), a driven stirring rod (27) is connected to the inside of the second bearing (26), a driven pulley (28) is sleeved on the end of the driven stirring rod (27), a belt ring (29) is sleeved on the surface of the driving pulley (25) and the driven pulley (28), a power motor (30) is connected to the end of the active stirring rod (24), an online pH meter (31) is installed on the side surface of the sewage treatment tank (1), a pH detection head (32) is connected to the side surface of the online pH meter (31), and the pH detection head (32) is connected to the bottom of the inner wall of the neutralization chamber (6).

6. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 5, characterized in that: The active stirring rod (24) forms a rotating structure with the sewage treatment tank (1) via the first bearing (23), and the driven stirring rod (27) forms a rotating structure with the sewage treatment tank (1) via the second bearing (26).

7. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 5, characterized in that: The driving pulley (25) and the driven pulley (28) form a linkage structure via a belt loop (29), and the flocculation sedimentation chamber (5) and the neutralization chamber (6) form a communication structure.

8. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 5, characterized in that: The model of the online pH meter (31) is ZRN-PH-C, and the model of the online fluoride ion concentration meter (7) is PFG-3085.

9. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 1, characterized in that: The sewage treatment tank (1) comprises a tank wall (101), an inner primer (102), an inner mid-coat layer (103), an inner topcoat (104), a galvanized layer (105), an outer mid-coat layer (106) and an outer topcoat (107); the side surface of the tank wall (101) is connected to the inner primer (102); the side surface of the inner primer (102) is connected to the inner mid-coat layer (103); the side surface of the inner mid-coat layer (103) is connected to the inner topcoat (104); the other side of the tank wall (101) is connected to the galvanized layer (105); the side surface of the galvanized layer (105) is connected to the outer mid-coat layer (106); and the side surface of the outer mid-coat layer (106) is connected to the outer topcoat (107).

10. The fluorine-resistant, dilute-acid-resistant, and concentrated-acid-resistant anticorrosion structure according to claim 9, characterized in that: The main component of the inner primer (102) is cyanopolymer, the main component of the inner middle coating (103) is phenolic resin, the inner topcoat (104) uses acrylic waterproof coating, the main component of the outer middle coating (106) is composite oxide nano-dispersion, and the main component of the outer topcoat (107) is acrylic polymer.

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