Automatic acid adding device for wastewater heavy metal treatment

Abstract

The utility model discloses an automatic acid adding device for wastewater heavy metal treatment, and relates to the technical field of wastewater treatment. The device comprises a treatment barrel, the treatment barrel is rotationally connected with a second rotating rod, the upper surface of the treatment barrel is fixedly connected with a connecting pipe communicated with the interior of the treatment barrel, the upper end of the connecting pipe is fixedly connected with an acid adding tank communicated with the interior of the connecting pipe, and the lower end of the second rotating rod rotationally penetrates into the treatment barrel and is rotationally connected with the bottom wall of the treatment barrel. Mounting rings are arranged at the lower ends of the second rotating rods. According to the device, the positioning rod and the stirring rod can move up and down and also can rotate in a fan-shaped reciprocating manner, and the up-and-down convection of wastewater in the treatment barrel can be further increased in the up-and-down displacement process of the positioning rod, the stirring rod and the mounting ring, so that the mixing efficiency of an acid solution and the wastewater is further improved; therefore, the efficiency of wastewater heavy metal treatment is improved, and the working efficiency of the automatic acid adding device for wastewater heavy metal treatment is improved.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and specifically relates to an automatic acid adder for treating heavy metals in wastewater. Background Technology

[0002] Industrial wastewater includes production wastewater, industrial sewage, and cooling water. It refers to the wastewater and waste liquid generated during industrial production. Industrial wastewater contains a large amount of heavy metal pollutants. The treatment of heavy metals in industrial wastewater is a crucial environmental protection measure, which aims to reduce or eliminate toxic heavy metal elements in wastewater, thereby protecting water resources from pollution.

[0003] In the treatment of heavy metals in wastewater, acidic solutions need to be added to the wastewater. Acidic solutions can effectively adjust the pH value of the wastewater, and in an acidic environment, heavy metal ions are more likely to change from a dissolved state to a precipitated state.

[0004] In existing acid addition devices for heavy metal treatment of wastewater, the acidic solution is usually added by dripping or pouring onto the surface of the wastewater. The acid addition device typically uses a rotary agitator to stir the wastewater and acidic solution to promote mixing. However, because the acidic solution usually drips onto the upper layer of the wastewater, the upper layer of wastewater comes into contact with the acidic solution first and undergoes a pH change. The lower layer of wastewater, being farther away from the upper layer, experiences weak convection between the upper and lower layers due to the rotary agitation method. Consequently, the lower layer of wastewater takes a longer time to reach the target pH value, thus prolonging the stirring time and reducing the efficiency and effectiveness of wastewater treatment. Utility Model Content

[0005] In existing acid dosing devices for heavy metal treatment of wastewater, acidic solutions are typically added by dripping or pouring onto the surface of the wastewater. These devices usually employ rotary stirring to agitate the wastewater and acidic solution, promoting mixing. However, because the acidic solution usually drips onto the upper layer of the wastewater, the upper layer comes into contact with the acidic solution first, causing a pH change. The lower layer, being farther from the upper layer, experiences weaker convection due to the rotary stirring method, resulting in a longer time for the lower layer to reach the target pH. This prolongs the stirring time and reduces the efficiency and effectiveness of wastewater treatment. This invention proposes an automatic acid dosing device for heavy metal treatment of wastewater to overcome these technical problems in existing technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to an automatic acidifier for treating heavy metals in wastewater, comprising a treatment tank, a second rotating rod rotatably connected to the treatment tank, a connecting pipe communicating with the interior of the treatment tank fixedly connected to the upper surface of the treatment tank, an acid-adding tank communicating with the interior of the connecting pipe fixedly connected to the upper end of the connecting pipe, the lower end of the second rotating rod rotatably penetrating into the treatment tank and rotatably connected to the bottom wall of the treatment tank, an installation ring provided at the lower end of the second rotating rod, and two hydraulic rods fixedly connected to the upper surface of the treatment tank, the telescopic ends of the hydraulic rods slidingly penetrating into the treatment tank;

[0008] The mounting ring is equipped with an agitation mechanism, and the treatment tank is equipped with a drive mechanism. The drive mechanism drives the agitation mechanism to rotate reciprocally, thereby agitating the wastewater in the treatment tank so that the wastewater and acidic solution are mixed evenly.

[0009] The hydraulic rod is equipped with a moving mechanism. The lower side of the moving mechanism is slidably connected to the mounting ring. The moving mechanism drives the mounting ring to move up and down, thereby driving the stirring mechanism on the mounting ring to move up and down during the reciprocating stirring process, thereby increasing the vertical convection of wastewater in the treatment tank and further improving the mixing efficiency of wastewater and acidic solution.

[0010] The acid addition tank is equipped with a mixing mechanism. The driving mechanism drives the mixing mechanism to stir the acid solution in the acid addition tank, thereby stirring the acid solution in the acid addition tank and avoiding precipitation and incomplete dissolution of the acid solution.

[0011] Furthermore, the driving mechanism includes a motor, which is fixedly connected to the upper surface of the processing tank. A first bevel gear is fixedly connected to the rotation output shaft of the motor. A support rod is rotatably connected to the upper surface of the processing tank. A second bevel gear is fixedly sleeved on the outer surface of the support rod. The second bevel gear meshes with the first bevel gear. A crossbar is fixedly connected to the upper end of the support rod. A vertical column is fixedly connected to the end of the crossbar away from the support rod. A fixing block is fixedly sleeved on the outer surface of the second rotating rod. A sliding groove extending from the lower surface of the fixing block is formed on the upper surface. The vertical column is slidably connected to the sliding groove. A viewing opening is provided on the processing tank. The viewing opening is made of glass and has graduations.

[0012] Furthermore, the mixing mechanism includes a mounting box, which is fixedly mounted on the upper surface of the acid addition tank. A support frame is fixedly fitted on the outer surface of the acid addition tank. The lower side of the support frame is fixedly connected to the upper surface of the processing tank. The mounting box is hollow inside. The upper end of the second rotating rod rotatably penetrates into the mounting box. The second gear is fixedly fitted on the outer surface of the second rotating rod.

[0013] Furthermore, the mixing mechanism also includes a first rotating rod, which is rotatably connected between the upper and lower inner walls of the acid addition tank. The upper end of the first rotating rod rotatably penetrates into the mounting box. A first gear is fixedly sleeved on the outer surface of the first rotating rod. The first gear meshes with a second gear, and both the first gear and the second gear are located inside the mounting box. A feed inlet communicating with the interior of the acid addition tank is fixedly connected to the outer surface of the acid addition tank. Multiple mixing rods are fixedly connected to the outer surface of the first rotating rod. A liquid level sensor is installed inside the acid addition tank.

[0014] Furthermore, the agitation mechanism includes a fixed ring, which is slidably sleeved on the outer surface of the second rotating rod. A plurality of positioning rods are fixedly connected between the outer surface of the fixed ring and the inner wall of the mounting ring. A plurality of agitating rods are fixedly connected to the outer surface of the positioning rods. Two limiting grooves are formed in the inner wall of the fixed ring. A limiting block is fixedly connected to the outer surface of the second rotating rod, and the limiting block is slidably connected to the limiting grooves.

[0015] Furthermore, the moving mechanism includes two fixed rods, which are respectively fixedly connected to the telescopic ends of the two hydraulic rods. Two limiting ring grooves are formed on the upper and lower outer surfaces of the mounting ring, and two connecting ring grooves are formed on the mounting ring. The connecting ring grooves communicate with the interior of the limiting ring grooves on the upper and lower sides, and the fixed rods are slidably connected to the connecting ring grooves.

[0016] Furthermore, the moving mechanism also includes four sliding balls, which are fixedly sleeved on the outer surfaces of the two fixed rods. The sliding balls are adapted to the limiting ring grooves and are slidably connected to the limiting ring grooves.

[0017] This utility model has the following beneficial effects:

[0018] This invention utilizes a positioning rod and a stirring rod that can move vertically and reciprocate in a fan shape. During the vertical movement of the positioning rod, stirring rod, and mounting ring, the vertical convection of wastewater within the treatment tank is further increased, thereby improving the mixing efficiency between the acidic solution and the wastewater, and thus enhancing the efficiency of heavy metal treatment in wastewater. This, in turn, improves the working efficiency of the automatic acidifier for heavy metal treatment of wastewater.

[0019] This invention drives a positioning rod, a mounting ring, and a stirring rod to reciprocate in a fan shape. During the rotation, the positioning rod, stirring rod, and mounting ring agitate the wastewater and acidic solution in the treatment tank, so that the acidic solution and wastewater can be mixed evenly, thereby improving the quality of wastewater heavy metal treatment and thus improving the practicality of the automatic acid adder for wastewater heavy metal treatment.

[0020] During the rotation of the vertical column, the column slides within the sliding groove, thereby driving the fixed block to reciprocate in a fan shape around the second rotating rod. Simultaneously, the fixed block drives the second rotating rod to reciprocate in a fan shape.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the fixing block structure of this utility model;

[0025] Figure 3 This is a vertical cross-sectional view of the acid addition tank of this utility model;

[0026] Figure 4 This is a vertical cross-sectional view of the processing bucket of this utility model;

[0027] Figure 5 This is a vertical cross-sectional view of the mounting ring of this utility model;

[0028] Figure 6 This is a schematic diagram of the mounting ring structure of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Processing tank; 2. Viewing port; 3. Acid tank; 4. Connecting pipe; 5. Liquid level sensor; 6. Mounting box; 7. First gear; 8. First rotating rod; 9. Mixing rod; 10. Second rotating rod; 11. Mounting ring; 12. Hydraulic rod; 13. Motor; 14. First bevel gear; 15. Support rod; 16. Second bevel gear; 17. Crossbar; 18. Fixing block; 19. Sliding groove; 20. Vertical column; 21. Support frame; 22. Feed inlet; 23. Second gear; 24. Positioning rod; 25. Stirring rod; 26. Limiting ring groove; 27. Sliding ball; 28. Limiting block; 29. ​​Limiting groove; 30. Connecting ring groove; 31. Fixing ring; 32. Fixing rod. Detailed Implementation

[0031] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0032] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0033] Please see Figures 1-6 As shown, this utility model is an automatic acidifier for treating heavy metals in wastewater, including a treatment tank 1. A second rotating rod 10 is rotatably connected to the treatment tank 1. A connecting pipe 4 communicating with the interior of the treatment tank 1 is fixedly connected to the upper surface of the treatment tank 1. An acid addition tank 3 communicating with the interior of the connecting pipe 4 is fixedly connected to the upper end of the connecting pipe 4. The lower end of the second rotating rod 10 rotatably penetrates into the treatment tank 1 and is rotatably connected to the bottom wall of the treatment tank 1. An installation ring 11 is provided at the lower end of the second rotating rod 10. Two hydraulic rods 12 are fixedly connected to the upper surface of the treatment tank 1. The telescopic ends of the hydraulic rods 12 slide through into the treatment tank 1.

[0034] The mounting ring 11 is provided with an agitation mechanism, and the treatment tank 1 is provided with a driving mechanism. The driving mechanism drives the agitation mechanism to rotate back and forth, thereby agitating the wastewater in the treatment tank 1 so that the wastewater and acidic solution are mixed evenly.

[0035] The hydraulic rod 12 is provided with a moving mechanism. The lower side of the moving mechanism is slidably connected to the mounting ring 11. The moving mechanism drives the mounting ring 11 to move up and down, thereby driving the stirring mechanism on the mounting ring 11 to move up and down during the reciprocating stirring process, thereby increasing the vertical convection of wastewater in the treatment tank 1 and further improving the efficiency of mixing wastewater with acidic solution.

[0036] The acid addition tank 3 is equipped with a mixing mechanism. The driving mechanism drives the mixing mechanism to stir the acid solution in the acid addition tank 3, thereby stirring the acid solution in the acid addition tank 3 and avoiding precipitation and incomplete dissolution of the acid solution.

[0037] In use, the drive mechanism is activated to simultaneously drive the stirring mechanism and the second rotating rod 10 to reciprocate in a fan shape. The second rotating rod 10 drives the mixing mechanism to stir the acid solution in the acid tank 3, thereby stirring the acid solution in the acid tank 3 and preventing precipitation and incomplete dissolution of the acid solution. Then, the acid solution in the acid tank 3 is added to the treatment tank 1. The stirring mechanism reciprocates to stir the wastewater in the treatment tank 1, thereby mixing the wastewater and acid solution evenly. At this time, the hydraulic rod 12 is activated simultaneously. Under the action of the moving mechanism, the hydraulic rod 12 drives the mounting ring 11 to move up and down, thereby driving the stirring mechanism on the mounting ring 11 to move up and down synchronously during the reciprocating rotation, thereby increasing the vertical convection of the wastewater in the treatment tank 1 and further improving the mixing efficiency of wastewater and acid solution.

[0038] In one embodiment, the driving mechanism includes a motor 13, which is fixedly connected to the upper surface of the processing tank 1. The rotation output shaft of the motor 13 is fixedly connected to a first bevel gear 14. A support rod 15 is rotatably connected to the upper surface of the processing tank 1. A second bevel gear 16 is fixedly sleeved on the outer surface of the support rod 15. The second bevel gear 16 meshes with the first bevel gear 14. A crossbar 17 is fixedly connected to the upper end of the support rod 15. A vertical column 20 is fixedly connected to the end of the crossbar 17 away from the support rod 15. A fixing block 18 is fixedly sleeved on the outer surface of the second rotating rod 10. A sliding groove 19 extending from the lower surface of the fixing block 18 is opened on the upper surface of the fixing block 18. The vertical column 20 is slidably connected to the sliding groove 19. A viewing port 2 is provided on the processing tank 1. The viewing port 2 is made of glass and has scale markings.

[0039] In addition, in specific applications, the starting motor 13 can drive the first bevel gear 14 to rotate. Since the first bevel gear 14 is meshed with the second bevel gear 16, it synchronously drives the second bevel gear 16 to rotate. The rotation of the second bevel gear 16 synchronously drives the support rod 15 to rotate, so that the support rod 15 synchronously drives the horizontal bar 17 fixed at its upper end to rotate. The rotation of the horizontal bar 17 synchronously drives the vertical column 20 to rotate around the support rod 15. During the rotation of the vertical column 20, it slides in the sliding groove 19, thereby pushing the fixed block 18 to reciprocate in a fan shape around the second rotating rod 10. Simultaneously, the fixed block 18 drives the second rotating rod 10 to reciprocate in a fan shape.

[0040] In one embodiment, the mixing mechanism includes a mounting box 6, which is fixedly mounted on the upper surface of the acid tank 3. A support frame 21 is fixedly sleeved on the outer surface of the acid tank 3. The lower side of the support frame 21 is fixedly connected to the upper surface of the processing tank 1. The mounting box 6 is hollow inside. The upper end of the second rotating rod 10 rotatably penetrates into the mounting box 6. The second gear 23 is fixedly sleeved on the outer surface of the second rotating rod 10.

[0041] The mixing mechanism also includes a first rotating rod 8, which is rotatably connected between the upper and lower inner walls of the acid addition tank 3. The upper end of the first rotating rod 8 rotatably penetrates into the mounting box 6. A first gear 7 is fixedly sleeved on the outer surface of the first rotating rod 8. The first gear 7 meshes with a second gear 23. Both the first gear 7 and the second gear 23 are located inside the mounting box 6. An inlet 22 communicating with the interior of the acid addition tank 3 is fixedly connected to the outer surface of the acid addition tank 3. A plurality of mixing rods 9 are fixedly connected to the outer surface of the first rotating rod 8. A liquid level sensor 5 is installed inside the acid addition tank 3.

[0042] In addition, in specific applications, acidic solution is injected into acid tank 3 through inlet 22. A controller is installed on the treatment tank 1, and a solenoid valve is installed on the connecting pipe 4. The PLC controller is electrically connected to the liquid level sensor 5, which is used to monitor the remaining acidic solution in the acid tank 3 in real time. The PLC controller is electrically connected to the solenoid valve. The amount of wastewater in the treatment tank 1 is observed through viewing port 2. Then, according to the amount of wastewater, the amount of acidic solution to be added is proportionally input to the PLC controller. The PLC controller controls the valve to open and add acidic solution to the treatment tank 1. When the liquid level sensor 5 detects that the required amount of acidic solution has been discharged into the treatment tank 1 through the connecting pipe 4, the PLC controller controls the valve to close, thereby realizing the automatic acid addition of wastewater, which is more efficient and accurate.

[0043] Furthermore, in practical applications, the second rotating rod 10 reciprocates in a fan shape, synchronously driving the second gear 23 fixed on it to rotate. Because the first gear 7 and the second gear 23 are meshed, the second gear 23 synchronously drives the first gear 7 and the first rotating rod 8 to rotate. The rotation of the first rotating rod 8 synchronously drives the mixing rod 9 to stir the acidic solution in the acid addition tank 3, thereby avoiding the acidic solution in the acid addition tank 3 from settling to the bottom and being insufficiently dissolved, thus increasing the practicality of the automatic acid dosing device for wastewater heavy metal treatment.

[0044] In one embodiment, the agitation mechanism includes a fixed ring 31, which is slidably sleeved on the outer surface of the second rotating rod 10. A plurality of positioning rods 24 are fixedly connected between the outer surface of the fixed ring 31 and the inner wall of the mounting ring 11. A plurality of agitating rods 25 are fixedly connected to the outer surface of the positioning rods 24. Two limiting grooves 29 are formed on the inner wall of the fixed ring 31. A limiting block 28 is fixedly connected to the outer surface of the second rotating rod 10. The limiting block 28 is slidably connected to the limiting groove 29.

[0045] As can be seen from the above, the starting motor 13 can drive the second rotating rod 10 to reciprocate in a fan shape. The rotation of the second rotating rod 10 synchronously drives the limiting block 28 fixed on the second rotating rod 10 to rotate. Because the limiting block 28 is slidably connected to the limiting groove 29, the reciprocating rotation of the second rotating rod 10 synchronously drives the fixed ring 31 to reciprocate. Since the positioning rod 24 is fixedly connected between the mounting ring 11 and the fixed ring 31, the fixed ring 31 synchronously drives the positioning rod 24, the mounting ring 11 and the stirring rod 25 to reciprocate in a fan shape. During the rotation, the positioning rod 24, the stirring rod 25 and the mounting ring 11 agitate the wastewater and acidic solution in the treatment tank 1 so that the acidic solution and wastewater can be mixed evenly, thereby improving the quality of wastewater heavy metal treatment and thus improving the practicality of the automatic acid adder for wastewater heavy metal treatment.

[0046] In one embodiment, the moving mechanism includes two fixed rods 32, which are respectively fixedly connected to the telescopic ends of the two hydraulic rods 12. Two limiting ring grooves 26 are formed on the upper and lower outer surfaces of the mounting ring 11, and two connecting ring grooves 30 are formed on the mounting ring 11. The connecting ring grooves 30 communicate with the interior of the limiting ring grooves 26 on the upper and lower sides, and the fixed rods 32 are slidably connected to the connecting ring grooves 30.

[0047] The moving mechanism also includes four sliding balls 27, which are fixedly sleeved on the outer surfaces of the two fixed rods 32. The sliding balls 27 are adapted to the limiting ring grooves 26, and the sliding balls 27 are slidably connected to the limiting ring grooves 26.

[0048] Furthermore, in specific applications, when the hydraulic rod 12 is activated, it can drive the fixed rod 32 to move up and down. The up and down movement of the fixed rod 32 synchronously drives the two sliding balls 27 fixed on it to move up and down. Because the two sliding balls 27 are slidably connected in the limiting ring grooves 26 on the upper and lower sides, the two sliding balls 27 cooperate with the fixed rod 32 to restrict the mounting ring 11, so that the mounting ring 11 can not only reciprocate in a fan shape with the drive of the second rotating rod 10, but also move up and down under the drive of the hydraulic rod 12. This causes the positioning rod 24 and the stirring rod 25 to move up and down while also reciprocating in a fan shape. During the up and down movement of the positioning rod 24, the stirring rod 25 and the mounting ring 11, the vertical convection of the wastewater in the treatment tank 1 can be further increased, thereby further improving the mixing efficiency between the acid solution and the wastewater, and thus improving the efficiency of the treatment of heavy metals in the wastewater, thereby improving the working efficiency of the automatic acid adder for the treatment of heavy metals in wastewater.

[0049] Through the above technical solution, 1. The positioning rod 24 and the stirring rod 25 can move up and down while also rotating in a fan shape. During the up and down movement of the positioning rod 24, the stirring rod 25 and the mounting ring 11, the vertical convection of the wastewater in the treatment tank 1 can be further increased, thereby further improving the mixing efficiency between the acid solution and the wastewater, and thus improving the efficiency of the treatment of heavy metals in the wastewater, thereby improving the working efficiency of the automatic acid adder for the treatment of heavy metals in wastewater.

[0050] By driving the positioning rod 24, the mounting ring 11, and the stirring rod 25 to reciprocate in a fan shape, the positioning rod 24, the stirring rod 25, and the mounting ring 11 agitate the wastewater and acidic solution in the treatment tank 1 during the rotation, so that the acidic solution and wastewater can be mixed evenly, thereby improving the quality of wastewater heavy metal treatment and thus improving the practicality of the automatic acid adder for wastewater heavy metal treatment.

[0051] By starting the motor 13, the first bevel gear 14 can be driven to rotate. Since the first bevel gear 14 is meshed with the second bevel gear 16, it synchronously drives the second bevel gear 16 to rotate. The rotation of the second bevel gear 16 synchronously drives the support rod 15 to rotate, so that the support rod 15 synchronously drives the horizontal bar 17 fixed at its upper end to rotate. The rotation of the horizontal bar 17 synchronously drives the vertical column 20 to rotate around the support rod 15. During the rotation of the vertical column 20, it slides in the sliding groove 19, thereby pushing the fixed block 18 to reciprocate in a fan shape around the second rotating rod 10. Simultaneously, the fixed block 18 drives the second rotating rod 10 to reciprocate in a fan shape.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic acidifier for treating heavy metals in wastewater, comprising a treatment tank (1), characterized in that, The processing tank (1) is rotatably connected to a second rotating rod (10). The upper surface of the processing tank (1) is fixedly connected to a connecting pipe (4) that communicates with its interior. The upper end of the connecting pipe (4) is fixedly connected to an acid tank (3) that communicates with its interior. The lower end of the second rotating rod (10) rotatably penetrates into the processing tank (1) and is rotatably connected to the bottom wall of the processing tank (1). The lower end of the second rotating rod (10) is provided with an installation ring (11). The upper surface of the processing tank (1) is fixedly connected to two hydraulic rods (12). The telescopic ends of the hydraulic rods (12) slide through into the processing tank (1). An agitation mechanism is provided on the mounting ring (11), and a driving mechanism is provided on the treatment tank (1). The driving mechanism drives the agitation mechanism to rotate back and forth, thereby agitating the wastewater in the treatment tank (1) so that the wastewater and acidic solution are mixed evenly. The hydraulic rod (12) is provided with a moving mechanism. The lower side of the moving mechanism is slidably connected to the mounting ring (11). The moving mechanism drives the mounting ring (11) to move up and down, thereby driving the stirring mechanism on the mounting ring (11) to move up and down during the reciprocating stirring process, thereby increasing the vertical convection of wastewater in the treatment tank (1) and further improving the efficiency of mixing wastewater with acidic solution. The acid addition tank (3) is equipped with a mixing mechanism. The driving mechanism drives the mixing mechanism to stir in the acid addition tank (3), thereby stirring the acidic solution in the acid addition tank (3) and avoiding precipitation and incomplete dissolution of the acidic solution.

2. The automatic acidifier for treating heavy metals in wastewater according to claim 1, characterized in that, The driving mechanism includes a motor (13), which is fixedly connected to the upper surface of the processing barrel (1). The rotation output shaft of the motor (13) is fixedly connected to a first bevel gear (14). A support rod (15) is rotatably connected to the upper surface of the processing barrel (1). A second bevel gear (16) is fixedly sleeved on the outer surface of the support rod (15). The second bevel gear (16) meshes with the first bevel gear (14). A crossbar (17) is fixedly connected to the upper end of the support rod (15). A vertical column (20) is fixedly connected to the end of the crossbar (17) away from the support rod (15). A fixing block (18) is fixedly sleeved on the outer surface of the second rotating rod (10). A sliding groove (19) extending from the lower surface of the fixing block (18) is opened on the upper surface of the fixing block (18). The vertical column (20) is slidably connected to the sliding groove (19). A viewing opening (2) is provided on the processing barrel (1). The viewing opening (2) is made of glass and has a scale.

3. An automatic acidifier for treating heavy metals in wastewater according to claim 2, characterized in that, The mixing mechanism includes a mounting box (6), which is fixedly mounted on the upper surface of the acid tank (3). A support frame (21) is fixedly fitted on the outer surface of the acid tank (3). The lower side of the support frame (21) is fixedly connected to the upper surface of the processing tank (1). The mounting box (6) is hollow inside. The upper end of the second rotating rod (10) rotates through the mounting box (6). A second gear (23) is fixedly fitted on the outer surface of the second rotating rod (10).

4. An automatic acidifier for treating heavy metals in wastewater according to claim 3, characterized in that, The mixing mechanism also includes a first rotating rod (8), which is rotatably connected between the upper and lower inner walls of the acid tank (3). The upper end of the first rotating rod (8) rotates through the mounting box (6). A first gear (7) is fixedly sleeved on the outer surface of the first rotating rod (8). The first gear (7) meshes with a second gear (23). Both the first gear (7) and the second gear (23) are located inside the mounting box (6). The outer surface of the acid tank (3) is fixedly connected to an inlet (22) that communicates with its interior. Multiple mixing rods (9) are fixedly connected to the outer surface of the first rotating rod (8). A liquid level sensor (5) is installed inside the acid tank (3).

5. An automatic acidifier for treating heavy metals in wastewater according to claim 3, characterized in that, The agitation mechanism includes a fixed ring (31), which is slidably sleeved on the outer surface of the second rotating rod (10). A plurality of positioning rods (24) are fixedly connected between the outer surface of the fixed ring (31) and the inner wall of the mounting ring (11). A plurality of agitating rods (25) are fixedly connected to the outer surface of the positioning rods (24). Two limiting grooves (29) are opened on the inner wall of the fixed ring (31). A limiting block (28) is fixedly connected to the outer surface of the second rotating rod (10). The limiting block (28) is slidably connected to the limiting groove (29).

6. An automatic acidifier for treating heavy metals in wastewater according to claim 5, characterized in that, The moving mechanism includes two fixed rods (32), which are fixedly connected to the telescopic ends of the two hydraulic rods (12). The upper and lower outer surfaces of the mounting ring (11) are provided with two limiting ring grooves (26), and the mounting ring (11) is provided with two connecting ring grooves (30). The connecting ring grooves (30) are connected to the interior of the limiting ring grooves (26) on the upper and lower sides. The fixed rods (32) are slidably connected to the connecting ring grooves (30).

7. An automatic acidifier for treating heavy metals in wastewater according to claim 6, characterized in that, The moving mechanism also includes four sliding balls (27), which are fixedly sleeved on the outer surfaces of the two fixed rods (32). The sliding balls (27) are adapted to the limiting ring grooves (26), and the sliding balls (27) are slidably connected to the limiting ring grooves (26).

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