A sulfuric acid neutralization residual water device

Abstract

The application discloses a sulfuric acid neutralization residual water device and relates to the technical field of sewage treatment. The sulfuric acid neutralization residual water device comprises a base and further comprises: a barrel body arranged horizontally and rotatably installed on the base, wherein an axial end edge of the barrel body is provided with a feeding port, and the base is provided with a driving part for driving the barrel body to rotate; a horizontal shaft arranged horizontally in the barrel body, an outer wall of the horizontal shaft is connected with a stirring rod, an outer wall of the stirring rod is fixedly connected with a branch rod, a tail end of the stirring rod is connected with an elastic scraper, an outer wall of the barrel body is provided with a driving source for driving the horizontal shaft to rotate, and the horizontal shaft is provided with an expansion part for driving the stirring rod to expand and contract along an axis; the application can improve the sulfuric acid neutralization efficiency, prevent the lime and calcium sulfate precipitate from being deposited, and prevent the lime from being lumped.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically, it relates to a sulfuric acid neutralization device for residual water. Background Technology

[0002] In industrial wastewater treatment, some wastewater (such as mine drainage, electroplating wastewater, or chemical wastewater) often contains strong acidic substances such as sulfuric acid. Direct discharge of these substances can severely pollute the environment and corrode pipelines. Therefore, neutralization treatment equipment is needed to adjust the pH of the wastewater to neutral (pH 6-9). Lime is the most commonly used neutralizing agent due to its low cost, high reaction efficiency, and ability to simultaneously precipitate heavy metals. Lime reacts with sulfuric acid to form calcium hydroxide precipitate and water.

[0003] When neutralizing wastewater containing sulfuric acid, lime tends to settle at the bottom of the container along with the calcium sulfate precipitate. Some lime and calcium sulfate precipitate also adhere to the inner wall of the container, and some lime may clump together. This not only affects the efficiency of wastewater neutralization but also makes the inner wall of the container prone to scaling. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a sulfuric acid neutralization residual water device that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] A sulfuric acid neutralization residual water device includes a base and further includes: a horizontally arranged barrel rotatably mounted on the base, wherein a feed inlet is provided at the axial end edge of the barrel, and a drive unit for driving the barrel to rotate is provided on the base; a horizontal shaft is arranged horizontally inside the barrel, a stirring rod is connected to the outer wall of the horizontal shaft, a branch rod is fixedly connected to the outer wall of the stirring rod, and an elastic scraper is connected to the end of the stirring rod; a drive source for driving the horizontal shaft to rotate is provided on the outer wall of the barrel, and a telescopic part for driving the stirring rod to extend and retract along the axis is provided on the horizontal shaft.

[0007] Preferably, the drive unit includes a first motor fixedly mounted on the base, a first gear fixedly mounted on the output shaft of the first motor, and a ring gear meshing with the first gear fixedly mounted on the outer wall of the barrel.

[0008] Preferably, the drive source includes a second motor fixedly installed on the outer wall of the barrel, a second gear fixedly installed on the output shaft of the second motor, a transmission gear rotatably installed on the outer wall of the barrel and meshing with the second gear, and one end of the horizontal shaft passing through the outer wall of the barrel and fixedly installed with a third gear, the third gear meshing with the transmission gear.

[0009] Furthermore, the telescopic part includes a sleeve fixedly connected to the outer wall of the horizontal shaft, a first piston plate slidably installed inside the sleeve, one end of the stirring rod fixedly connected to the first piston plate, a cavity communicating with the sleeve inside the horizontal shaft, a return spring installed between the end of the first piston plate and the sleeve, an inner cavity penetrating the first piston plate inside the stirring rod, a fine hole penetrating to the end of the branch rod inside the inner cavity, and an air supply part that indirectly supplies air to the cavity on the barrel body.

[0010] Furthermore, the air supply unit includes a cylinder fixedly connected to the outer wall of the barrel. A second piston plate is slidably installed inside the cylinder. A U-shaped tube communicating with the cavity is rotatably connected to the end of the horizontal shaft. The other end of the U-shaped tube passes through the second piston plate and is fixedly connected to the second piston plate. Both ends of the cylinder are fixedly connected to air inlet pipes. Two exhaust pipes communicating with both ends of the cylinder are fixedly connected to the U-shaped tube. One-way valves are fixedly installed inside both the exhaust pipes and the air inlet pipes. The outer wall of the middle part of the cylinder is provided with a slot. The outer wall of the barrel is provided with a reciprocating part that drives the second piston plate to move back and forth. The cross-sectional area of ​​the air inlet pipe and the exhaust pipe is larger than the total cross-sectional area of ​​all the fine holes.

[0011] Furthermore, the reciprocating part includes a reciprocating screw rotatably connected to the outer wall of the barrel. One end of the reciprocating screw is connected to a transmission gear, and the length of the transmission gear is the same as the length of the reciprocating screw. A reciprocating slide plate is installed on the outer wall of the reciprocating screw, and one side of the reciprocating slide plate is rotatably sleeved on the outer wall of the horizontal shaft.

[0012] Preferably, a support plate is fixedly connected to the base, and an exhaust pipe is fixedly connected to the support plate, with one end of the exhaust pipe extending to the inner top of the barrel.

[0013] Furthermore, a metal ring electrically connected to the input terminal of the second motor is fixedly connected to the outer wall of the barrel body, and an elastic sheet is fixedly connected to the base. One end of the elastic sheet is elastically pressed against the outer wall of the metal ring, and the other end of the elastic sheet is fixedly connected to a wire.

[0014] Furthermore, a protective cover is fixedly connected to the outer wall of the shaft end of the barrel, and the second motor, reciprocating screw and cylinder are all located inside the protective cover.

[0015] Furthermore, the outer wall of the protective cover is provided with ventilation slots, and filter plates are installed inside the ventilation slots.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] 1. The present invention uses a first motor to drive the barrel to rotate, which causes the wastewater and lime inside the barrel to tumble, thereby increasing the neutralization efficiency of sulfuric acid and making it less likely for lime and calcium sulfate precipitates to precipitate. At the same time, it also makes it less likely for lime to clump.

[0018] 2. This invention uses a reciprocating screw to drive a reciprocating slide plate to slide back and forth, while the horizontal axis drives the stirring rod and branch rod to move back and forth synchronously. Thus, the stirring rod and branch rod can revolve around the horizontal axis while also moving back and forth along the horizontal axis, thereby significantly increasing the stirring area of ​​the stirring rod and branch rod, thereby improving the mixing efficiency of wastewater and lime, and significantly improving the neutralization efficiency of sulfuric acid in the wastewater.

[0019] 3. In this invention, the second piston plate is driven to slide back and forth in the cylinder by the U-shaped tube. The air in the cylinder will eventually be discharged into the barrel from the end of the fine hole, thereby aerating the wastewater in the barrel and further improving the neutralization efficiency of sulfuric acid. Since the branch rod moves back and forth with the horizontal axis, the branch rod can spray the discharged air into the barrel more evenly, making the aeration effect more significant.

[0020] 4. The present invention also causes the stirring rod to reciprocate within the sleeve by moving the horizontal axis back and forth. Thus, the branch rod can not only move back and forth along the horizontal axis but also in a direction perpendicular to the horizontal axis, which further enhances the stirring effect of the branch rod on wastewater and lime, resulting in a higher sulfuric acid neutralization effect. The reciprocating branch rod also further increases the range of fine venting, thereby improving the aeration effect of wastewater and indirectly enhancing the sulfuric acid neutralization effect.

[0021] 5. This invention uses a reciprocating stirring rod to cause the elastic scraper to intermittently press against or move away from the inner wall of the tank. When the elastic scraper presses against the inner wall of the tank, the elastic scraper, which moves with the stirring rod within the tank, can scrape off some of the sediment, lime, and clumps of lime from the inner wall of the tank. This keeps the inner wall of the tank clean and ensures the efficiency of sulfuric acid neutralization in the wastewater. On the other hand, the elastic scraper, with its gradually decreasing angle and sliding around the inner wall of the tank, also crushes the clumps of lime, causing them to dissolve quickly in the wastewater, rather than simply being scraped off the inner wall of the tank.

[0022] 6. By moving the elastic scraper away from the inner wall of the tank, the elastic scraper, which is agitated in the wastewater, will also be washed by the wastewater. This allows the precipitate and lime adhering to the elastic scraper to be washed away by the wastewater. On the one hand, some of the scraped-off precipitate and lime will be mixed back into the wastewater. On the other hand, the elastic scraper can maintain its good function.

[0023] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0024] In the attached diagram:

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of a sulfuric acid neutralization residual water device proposed in this invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of a sulfuric acid neutralization residual water device proposed in this invention. Figure 2 ;

[0027] Figure 3 This is a cross-sectional view of a sulfuric acid neutralization wastewater device proposed in this invention. Figure 1 ;

[0028] Figure 4 This is a cross-sectional view of a sulfuric acid neutralization wastewater device proposed in this invention. Figure 2 ;

[0029] Figure 5 This is a partial structural schematic diagram of a sulfuric acid neutralization residual water device proposed in this invention;

[0030] Figure 6 This is a schematic diagram of the stirring rod structure of a sulfuric acid neutralization residual water device proposed in this invention;

[0031] Figure 7 This is a schematic diagram of the cylinder structure of a sulfuric acid neutralization residual water device proposed in this invention;

[0032] Figure 8 This invention provides a sulfuric acid neutralization device for residual water. Figure 5 Schematic diagram of part A in the middle.

[0033] In the diagram: 1. Base; 2. Barrel body; 3. Feed inlet; 4. First motor; 5. First gear; 6. Ring gear; 7. Horizontal shaft; 8. Stirring rod; 9. Branch rod; 10. Second motor; 11. Second gear; 12. Transmission gear; 13. Third gear; 14. Reciprocating screw; 15. Reciprocating slide plate; 16. Exhaust pipe; 17. Cavity; 18. Sleeve; 19. First piston plate; 20. Return spring; 21. Inner cavity; 22. Fine hole; 23. Cylinder body; 24. Second piston plate; 25. U-shaped tube; 26. Exhaust pipe; 27. Inlet pipe; 28. Elastic scraper; 29. ​​Groove; 30. Support plate; 31. Protective cover; 32. Ventilation slot; 33. Filter plate; 34. Metal ring; 35. Elastic sheet; 36. Wire. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] Example 1: Refer to Figures 1-8 A sulfuric acid neutralization residual water device includes a base 1 for supporting the entire device, and further includes: a horizontally arranged cylindrical barrel 2 rotatably mounted on the base 1, wherein a feed inlet 3 is provided at the axial end edge of the barrel 2, and a retractable electric gate is also installed on the feed inlet 3, which can block or open the feed inlet 3; the base 1 is provided with a drive unit for driving the barrel 2 to rotate, the drive unit includes a first motor 4 fixedly mounted on the base 1, a first gear 5 fixedly mounted on the output shaft of the first motor 4, and a ring gear 6 fixedly mounted on the outer wall of the barrel 2, which meshes with the first gear 5; a transverse shaft 7 horizontally arranged inside the barrel 2, and a stirring rod 8 connected to the outer wall of the transverse shaft 7; the outer wall of the stirring rod 8... A branch rod 9 is fixedly connected, and an elastic scraper 28 is connected to the end of the stirring rod 8. The elastic scraper 28 is elastic and inclined to the end of the stirring rod 8 at an angle between 5° and 30°. The outer wall of the barrel 2 is provided with a drive source for driving the horizontal shaft 7 to rotate. The drive source includes a second motor 10 fixedly installed on the outer wall of the barrel 2. A second gear 11 is fixedly installed on the output shaft of the second motor 10. A transmission gear 12 that meshes with the second gear 11 is rotatably installed on the outer wall of the barrel 2. One end of the horizontal shaft 7 extends through the outer wall of the barrel 2 and a third gear 13 is fixedly installed thereon. The third gear 13 meshes with the transmission gear 12. The horizontal shaft 7 is provided with a telescopic part that drives the stirring rod 8 to extend and retract along the axis.

[0036] Specifically, wastewater containing sulfuric acid and lime are fed into the tank 2 through the inlet 3. The entire device is then started. The first motor 4 drives the ring gear 6 via the first gear 5, which in turn drives the tank 2 to rotate. This causes the wastewater and lime inside the tank 2 to tumble, resulting in higher sulfuric acid neutralization efficiency and reducing the likelihood of lime and calcium sulfate precipitates settling and clumping. Meanwhile, the second motor 10 drives the transmission gear 12 via the second gear 11, which in turn drives the third gear 13, which in turn drives the horizontal shaft 7. The horizontal shaft 7 then drives the stirring rod 8 and the branch rod 9 to perform circumferential stirring within the tank 2, thus mixing the wastewater and lime and neutralizing the sulfuric acid in the wastewater. The telescopic part causes the stirring rod 8 to reciprocate along its axis, simultaneously moving the branch rod 9 synchronously. This further increases the stirring area of ​​the branch rod 9, indirectly improving the sulfuric acid neutralization effect in the wastewater.

[0037] The outer wall of the aforementioned barrel 2 is fixedly connected with a metal ring 34 that is electrically connected to the input terminal of the second motor 10. The number of metal rings 34 depends on the number of power supply lines required by the second motor 10. For example, two metal rings 34 are required for two-phase power supply. An elastic sheet 35 is fixedly connected to the base 1. One end of the elastic sheet 35 is elastically pressed against the outer wall of the metal ring 34, and the other end of the elastic sheet 35 is fixedly connected with a wire 36.

[0038] In use, the end of the wire 36 is connected to the power source. The wire 36 can transmit power to the metal ring 34 through the elastic sheet 35, and the metal ring 34 can transmit power to the second motor 10. When the barrel 2 rotates, the elastic sheet 35 can slide on the metal ring 34 and remain connected, thus supplying power to the continuously rotating second motor 10.

[0039] Example 2: Refer to Figures 3-6 as well as Figure 8 A sulfuric acid neutralization device for residual water, which is basically the same as that in Example 1, but further includes:

[0040] The aforementioned telescopic part includes a sleeve 18 fixedly connected to the outer wall of the horizontal shaft 7. A first piston plate 19 is slidably installed inside the sleeve 18. One end of the stirring rod 8 is fixedly connected to the first piston plate 19. A sealing ring is installed on the outer wall of the first piston plate 19. A cavity 17 communicating with the sleeve 18 is provided inside the horizontal shaft 7. A return spring 20 is installed between the end of the first piston plate 19 and the end of the sleeve 18. An inner cavity 21 penetrating the first piston plate 19 is provided inside the stirring rod 8. A fine hole 22 penetrating to the end of the branch rod 9 is provided inside the inner cavity 21. An air supply part that indirectly supplies air to the cavity 17 is provided on the barrel 2.

[0041] Specifically, during use, the air supply unit can intermittently blow air into the cavity 17. When the air supply unit supplies air, the air will sequentially enter the cavity 17, the sleeve 18, and the inner cavity 21, and finally be discharged into the tank 2 from the end of the fine hole 22, thereby aerating the wastewater in the tank 2 and further improving the neutralization efficiency of sulfuric acid. Because the air supply unit discharges a large amount of gas, the air entering the sleeve 18 cannot be discharged in time, which will push the first piston plate 19 to slide away from the horizontal axis 7, thereby driving the stirring rod 8 to slide away from the horizontal axis 7. The stirring rod 8 will then drive the branch As rod 9 slides away from horizontal axis 7, when the air supply stops, the return spring 20 will drive the first piston plate 19 to move in the opposite direction to reset, thereby gradually venting excess air from the sleeve 18. As a result, the positions of stirring rod 8 and branch rod 9 will also return to their original positions. The continuously rotating horizontal axis 7 will cause stirring rod 8 to reciprocate within sleeve 18, which will further enhance the effect of branch rod 9 in stirring wastewater and lime, resulting in a higher sulfuric acid neutralization effect. The reciprocating branch rod 9 will further increase the exhaust range of fine hole 22, thereby improving the aeration effect of wastewater and indirectly enhancing the sulfuric acid neutralization effect.

[0042] When the stirring rod 8 moves away from the horizontal axis 7, it will drive the elastic scraper 28 to move synchronously. The elastic scraper 28 will then tilt and elastically press against the inner wall of the barrel 2. The farther the stirring rod 8 is from the horizontal axis 7, the greater the pressure of the elastic scraper 28 against the inner wall of the barrel 2, and the smaller the tilt angle between the elastic scraper 28 and the inner wall of the barrel 2. When the stirring rod 8 moves in the opposite direction to its original position, the elastic scraper 28 will gradually reduce its pressure on the inner wall of the barrel 2, eventually moving away from the inner wall of the barrel 2. Thus, the reciprocating extension and retraction of the stirring rod 8 will cause the elastic scraper 28 to intermittently press against or move away from the inner wall of the barrel 2. When the elastic scraper 28 presses against the inner wall of the barrel 2, the elastic scraper 28, which moves with the stirring rod 8 within the barrel 2, can scrape off some of the sediment, lime, and clumps of lime from the inner wall of the barrel 2, thus cleaning the inner wall of the barrel 2. The inner wall is kept clean, ensuring the efficiency of sulfuric acid neutralization in the wastewater. On the other hand, the elastic scraper 28, with its gradually decreasing inclination angle and sliding around the inner wall of the barrel 2, also crushes the clumps of lime, causing them to dissolve quickly in the wastewater, rather than simply being scraped off the inner wall of the barrel 2. The reciprocating horizontal axis 7 causes the elastic scraper 28 to move back and forth along the inner wall of the barrel 2, further increasing the scraping and crushing area of ​​the elastic scraper 28. After the elastic scraper 28 moves away from the inner wall of the barrel 2, the elastic scraper 28, which is agitated in the wastewater, receives the rinsing effect of the wastewater. This allows the precipitate and lime adhering to the elastic scraper 28 to be washed away by the wastewater. On the one hand, this allows some of the scraped-off precipitate and lime to mix back into the wastewater, and on the other hand, it allows the elastic scraper 28 to maintain its good function.

[0043] A support plate 30 is fixedly connected to the base 1, and an exhaust pipe 16 is fixedly connected to the support plate 30. One end of the exhaust pipe 16 extends to the top of the inner part of the barrel 2. When the gas inside the barrel 2 gradually increases, the excess gas can be discharged from the barrel 2 through the exhaust pipe 16.

[0044] Example 3: Reference Figure 3 , Figure 5 as well as Figure 7 A sulfuric acid neutralization device for residual water, which is basically the same as that in Example 2, but further includes:

[0045] The aforementioned air supply unit includes a cylinder 23 fixedly connected to the outer wall of the barrel 2. A second piston plate 24 is slidably installed inside the cylinder 23. A U-shaped tube 25 communicating with the cavity 17 is rotatably connected to the end of the horizontal shaft 7. The other end of the U-shaped tube 25 passes through the second piston plate 24 and is fixedly connected to the second piston plate 24. Both ends of the cylinder 23 are fixedly connected to an air inlet pipe 27. Two exhaust pipes 26 communicating with both ends of the cylinder 23 are fixedly connected to the U-shaped tube 25. One-way valves are fixedly installed inside the exhaust pipes 26 and the air inlet pipes 27. The outer wall of the middle part of the cylinder 23 is provided with a slot 29. The outer wall of the barrel 2 is provided with a reciprocating part that drives the second piston plate 24 to move back and forth. The cross-sectional area of ​​the air inlet pipe 27 and the exhaust pipe 26 is larger than the total cross-sectional area of ​​all the fine holes 22.

[0046] Specifically, the reciprocating mechanism drives the second piston plate 24 to reciprocate laterally within the cylinder 23. When the second piston plate 24 moves away from the groove 29 and closer to both ends of the cylinder 23, it compresses the air within both ends of the cylinder 23. This air then enters the U-shaped pipe 25 through the exhaust pipe 26, and subsequently enters the cavity 17, the sleeve 18, and the inner cavity 21. Since the cross-sectional area of ​​all the fine holes 22 is smaller than that of the exhaust pipe 26, the air entering the sleeve 18 cannot be discharged in time. This will push the first piston plate 19 to slide away from the horizontal axis 7, which will drive the stirring rod 8 to slide away from the horizontal axis 7. The stirring rod 8 will then drive the branch rod 9 to slide away from the horizontal axis 7. When the second piston plate 24 moves towards the middle of the cylinder 23, a negative pressure will be generated inside one end of the cylinder 23, and outside air will be drawn in through the intake pipe 27. When the second piston plate 24 is located in the middle of the cylinder 23, due to the setting of the slot 29, neither end of the cylinder 23 will exhaust or draw in air.

[0047] A protective cover 31 is fixedly connected to the outer wall of the shaft end of the aforementioned barrel 2. The second motor 10, the reciprocating screw 14, and the cylinder 23 are all located inside the protective cover 31. The outer wall of the protective cover 31 is provided with a ventilation groove 32. A filter plate 33 is installed inside the ventilation groove 32. The protective cover 31 can effectively isolate and protect the second motor 10, the reciprocating screw 14, and the cylinder 23. The ventilation groove 32 facilitates the cylinder 23 to draw air through the air intake pipe 27, and the filter plate 33 can reduce dust entering the air intake pipe 27.

[0048] Example 4: Reference Figure 3 , Figure 5 as well as Figure 7 A sulfuric acid neutralization device for residual water, which is basically the same as in Example 3, but further:

[0049] The reciprocating part includes a reciprocating screw 14 rotatably connected to the outer wall of the barrel 2. One end of the reciprocating screw 14 is connected to the transmission gear 12, and the length of the transmission gear 12 is the same as the length of the reciprocating screw 14, so that the third gear 13 can also slide back and forth along the outer wall of the transmission gear 12. A reciprocating slide plate 15 is installed on the outer wall of the reciprocating screw 14, and one side of the reciprocating slide plate 15 is rotatably sleeved on the outer wall of the horizontal shaft 7.

[0050] Specifically, when the transmission gear 12 rotates, it also drives the reciprocating screw 14 to rotate. The reciprocating screw 14 then drives the reciprocating slide plate 15 to slide back and forth. The reciprocating slide plate 15 then drives the horizontal shaft 7 to move back and forth horizontally. The horizontal shaft 7 then drives the stirring rod 8 and the branch rod 9 to move back and forth horizontally synchronously. Thus, the stirring rod 8 and the branch rod 9 can revolve around the axis of the horizontal shaft 7 while also moving back and forth along the axis of the horizontal shaft 7. This can significantly increase the stirring area of ​​the stirring rod 8 and the branch rod 9, thereby improving the mixing efficiency of wastewater and lime and significantly improving the neutralization efficiency of sulfuric acid in the wastewater.

[0051] In use, wastewater containing sulfuric acid and lime are fed into the tank 2 through the feed inlet 3. Then, the entire device is started. The first motor 4 drives the ring gear 6 to rotate through the first gear 5. The ring gear 6 drives the tank 2 to rotate, which causes the wastewater and lime inside the tank 2 to tumble. This makes the sulfuric acid neutralization efficiency higher, and the lime and calcium sulfate precipitate are less likely to precipitate. At the same time, it also makes the lime less likely to clump.

[0052] The second motor 10 drives the transmission gear 12 to rotate via the second gear 11. The transmission gear 12 then drives the third gear 13 to rotate, which in turn drives the horizontal shaft 7 to rotate. The horizontal shaft 7 then drives the stirring rod 8 and the branch rod 9 to perform circumferential stirring within the barrel 2, thus completing the mixing of wastewater and lime and neutralizing the sulfuric acid in the wastewater with lime.

[0053] When the transmission gear 12 rotates, it also drives the reciprocating screw 14 to rotate. The reciprocating screw 14 then drives the reciprocating slide plate 15 to slide back and forth. The reciprocating slide plate 15 then drives the horizontal shaft 7 to move back and forth horizontally. The horizontal shaft 7 then drives the stirring rod 8 and the branch rod 9 to move back and forth horizontally synchronously. Thus, the stirring rod 8 and the branch rod 9 can revolve around the axis of the horizontal shaft 7 while also moving back and forth along the axis of the horizontal shaft 7. This can significantly increase the stirring area of ​​the stirring rod 8 and the branch rod 9, thereby improving the mixing efficiency of wastewater and lime and significantly improving the neutralization efficiency of sulfuric acid in the wastewater.

[0054] As the horizontal axis 7 moves back and forth, it drives the second piston plate 24 to slide back and forth in the cylinder 23 through the U-shaped tube 25. When the second piston plate 24 moves away from the groove 29 and closer to both ends of the cylinder 23, it compresses the air in both ends of the cylinder 23. The air in both ends of the cylinder 23 enters the U-shaped tube 25 through the exhaust pipe 26, and then enters the cavity 17, the sleeve 18 and the inner cavity 21 in sequence. Finally, it is discharged into the barrel 2 from the end of the fine hole 22, thereby aerating the wastewater in the barrel 2 and further improving the neutralization efficiency of sulfuric acid. Since the branch rod 9 moves back and forth with the horizontal axis 7, the branch rod 9 can spray the discharged air more evenly into the barrel 2, making the aeration effect more significant.

[0055] Since the cross-sectional area of ​​all the fine holes 22 is smaller than that of the exhaust pipe 26, the air entering the sleeve 18 cannot be discharged in time. This pushes the first piston plate 19 to slide away from the horizontal axis 7, which in turn drives the stirring rod 8 to slide away from the horizontal axis 7. The stirring rod 8 then drives the branch rod 9 to slide away from the horizontal axis 7. When the second piston plate 24 moves towards the middle of the cylinder 23, a negative pressure is generated inside one end of the cylinder 23, and outside air is drawn in through the intake pipe 27. When the second piston plate 24 is located in the middle of the cylinder 23, due to the slot 29, neither end of the cylinder 23 will exhaust or draw in air. During this period, the return spring 20 will drive the first piston plate 19 to move in the opposite direction to reset, thereby gradually venting the excess air in the sleeve 18. As a result, the positions of the stirring rod 8 and the branch rod 9 will also return to their original positions. The reciprocating horizontal axis 7 will also cause the stirring rod 8 to reciprocate within the sleeve 18. Thus, the branch rod 9 can not only reciprocate along the axis of the horizontal axis 7, but also reciprocate in a direction perpendicular to the axis of the horizontal axis 7. This will further enhance the stirring effect of the branch rod 9 on wastewater and lime, resulting in a higher sulfuric acid neutralization effect. The reciprocating branch rod 9 will further increase the exhaust range of the fine hole 22, thereby improving the aeration effect of the wastewater and indirectly enhancing the sulfuric acid neutralization effect.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A device for neutralizing residual water from sulfuric acid, comprising a base (1), characterized in that, Also include: Transversely arranged barrel (2), rotatably mounted on the base (1), Wherein the shaft end edge of the barrel (2) is provided with a feed port (3), the base (1) is provided with a drive part for driving the barrel (2) to rotate; The transverse shaft (7) is transversely arranged in the barrel (2), the outer wall of the transverse shaft (7) is connected with the stirring rod (8), the outer wall of the stirring rod (8) is fixedly connected with the branch rod (9), the end of the stirring rod (8) is connected with the elastic scraper (28), the outer wall of the barrel (2) is provided with a driving source for driving the transverse shaft (7) to rotate, the transverse shaft (7) is provided with a telescopic part for driving the stirring rod (8) to stretch and contract along the axis; The driving source comprises a second motor (10) fixedly installed on the outer wall of the barrel (2), a second gear (11) fixedly installed on the output shaft of the second motor (10), a transmission gear (12) rotatably installed on the outer wall of the barrel (2) and engaged with the second gear (11), and a third gear (13) fixedly installed at one end of the transverse shaft (7) and engaged with the transmission gear (12); The telescopic part comprises a sleeve (18) fixedly connected to the outer wall of the transverse shaft (7), a first piston plate (19) slidably installed in the sleeve (18), one end of the stirring rod (8) fixedly connected to the first piston plate (19), a cavity (17) provided in the transverse shaft (7) and communicating with the sleeve (18), a reset spring (20) installed between the first piston plate (19) and the end of the sleeve (18), an inner cavity (21) provided in the stirring rod (8) and penetrating through the first piston plate (19), a fine hole (22) provided in the inner cavity (21) and penetrating through the end of the branch rod (9), and a gas supply part provided on the barrel (2) and indirectly supplying gas to the cavity (17); The gas supply part comprises a cylinder (23) fixedly connected to the outer wall of the barrel (2), a second piston plate (24) slidably installed in the cylinder (23), and a U-shaped tube (25) rotatably connected to the end of the transverse shaft (7) and communicating with the cavity (17), wherein the other end of the U-shaped tube (25) penetrates through the second piston plate (24) and is fixedly connected with the second piston plate (24); Both ends of the cylinder (23) are fixedly connected with air inlet pipes (27), two air outlet pipes (26) are fixedly connected to the U-shaped tube (25) and communicate with both ends of the cylinder (23), one-way valves are fixedly installed in the air inlet pipes (27) and the air outlet pipes (26), a slot (29) is provided on the middle outer wall of the cylinder (23), a reciprocating part is provided on the outer wall of the barrel (2) and drives the second piston plate (24) to reciprocate, and the cross-sectional areas of the air inlet pipes (27) and the air outlet pipes (26) are greater than the total cross-sectional area of all fine holes (22). The reciprocating part comprises a reciprocating screw rod (14) rotatably connected to the outer wall of the barrel (2), one end of the reciprocating screw rod (14) is connected with a transmission gear (12), the length of the transmission gear (12) is the same as the length of the reciprocating screw rod (14), the outer wall of the reciprocating screw rod (14) is provided with a reciprocating slide plate (15), and one side of the reciprocating slide plate (15) is rotatably sleeved on the outer wall of the horizontal shaft (7).

2. The apparatus for neutralizing residual sulfuric acid water according to claim 1, wherein The driving part comprises a first motor (4) fixedly installed on the base (1), a first gear (5) is fixedly installed on the output shaft of the first motor (4), and the outer wall of the barrel (2) is fixedly installed with an annular gear (6) in meshing connection with the first gear (5).

3. The device for neutralizing residual sulfuric acid water according to claim 1, wherein The base (1) is fixedly connected with a supporting plate (30), the supporting plate (30) is fixedly connected with a waste gas pipe (16), one end of the waste gas pipe (16) extends to the inner top of the barrel (2).

4. The apparatus for neutralizing residual sulfuric acid water according to claim 1, wherein The outer wall of the barrel (2) is fixedly connected with a metal ring (34) electrically connected with the input end of the second motor (10), the base (1) is fixedly connected with an elastic sheet (35), one end of the elastic sheet (35) is elastically pressed against the outer wall of the metal ring (34), and the other end of the elastic sheet (35) is fixedly connected with a wire (36).

5. The apparatus for neutralizing residual sulfuric acid water according to claim 1, wherein The outer wall of the barrel (2) is fixedly connected with a protective cover (31), the second motor (10), the reciprocating screw rod (14) and the cylinder (23) are located in the protective cover (31).

6. A device for neutralizing excess water from sulfuric acid according to claim 5, characterized in that The outer wall of the protective cover (31) is provided with a ventilation groove (32), and the ventilation groove (32) is provided with a filter plate (33).

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