A desulfurization slurry anti-fouling treatment device and method

Abstract

This invention belongs to the field of desulfurization absorption towers, specifically a desulfurization slurry anti-scaling treatment device and method, including a lower main body of the device; the top of the lower main body is fixedly connected to the bottom of the upper main body of the device, and an anti-scaling exhaust filtration mechanism is provided inside the lower main body; the anti-scaling exhaust filtration mechanism includes a motor, which is located on the right side of the outer side of the lower main body and is fixedly connected to the lower main body, and the left side of the motor passes through the outer side of the lower main body to reach the interior of the lower main body and is fixedly connected to the right side of the first transmission rod; through the design of the anti-scaling exhaust filtration mechanism, the function of stirring and preventing scaling is realized, solving the problem that existing devices do not have anti-scaling components. Since limestone slurry falls back to the slurry pool at the bottom of the tower after being sprayed and washed by flue gas, long-term static retention can easily cause solid matter to settle and accumulate, thus forming a plate-like scale layer, thereby reducing scaling.

Description

Technical Field

[0001] This invention relates to the field of desulfurization absorption towers, specifically to a device and method for preventing scaling of desulfurization slurry. Background Technology

[0002] Desulfurization absorption towers are core equipment in industrial flue gas purification systems. They are mainly used to remove acidic gases such as sulfur dioxide emitted during thermal power generation. Through spray absorption or catalytic reaction, harmful substances are converted into harmless byproducts, thereby effectively controlling acid rain formation and protecting the atmospheric environment.

[0003] Existing desulfurization absorption towers can be referenced in application number CN202520251338.8, which describes a boiler flue gas desulfurization absorption tower comprising a lower tower body and an upper tower body. The lower tower body is inserted into the bottom of the upper tower body and fixed by multiple bolts. The upper tower body contains a spray assembly that atomizes and sprays alkaline solution downwards. The lower tower body contains a washing assembly that is immersed in alkaline solution for gas discharge. Below the washing assembly is a wiping assembly connected to the lower tower body. The wiping assembly includes a vertical shaft rotatably connected to the inner wall of the bottom of the lower tower body. A brush plate is fixedly connected to the top of the vertical shaft, and a driven bevel gear is fixedly sleeved on the outside of the vertical shaft. This invention not only facilitates the initial contact of flue gas with alkaline solution but also cleans the flue gas outlet by wiping, effectively preventing scale buildup and blockage, ensuring normal gas discharge. Furthermore, the flue gas after initial absorption is further atomized by spraying to ensure thorough absorption. The aforementioned device does not include components to prevent scaling. Since the limestone slurry will fall back to the slurry pool at the bottom of the tower after being sprayed to wash the flue gas, long-term static retention can easily cause solid matter to settle and accumulate, thus forming a plate-like scale layer. Therefore, in order to address the above problem, a desulfurization slurry anti-scaling treatment device and method are proposed. Summary of the Invention

[0004] To address the problem that existing devices do not have anti-scaling components, and that limestone slurry, after being sprayed to wash the flue gas, will fall back to the slurry pool at the bottom of the tower, but long-term static retention can easily cause solid matter to settle and accumulate, thus forming a plate-like scale layer, this invention proposes an anti-scaling treatment device and method for desulfurization slurry.

[0005] The technical solution adopted by the present invention to solve its technical problem is: the desulfurization slurry anti-scaling treatment device of the present invention includes a lower body of the device; the top end of the lower body of the device is fixedly connected to the bottom end of the upper body of the device, and an anti-scaling exhaust filtration mechanism is provided inside the lower body of the device; The anti-scaling exhaust filtration mechanism includes a motor, which is located on the right side of the outer side of the lower body of the device and is fixedly connected to the lower body of the device. The left side of the motor passes through the outer side of the lower body of the device and reaches the interior of the lower body of the device, where it is fixedly connected to the right side of the first transmission rod. The left side of the first transmission rod is fixedly connected to the right side of the first helical gear. The first helical gear meshes with the second helical gear, and the bottom end of the second helical gear is fixedly connected to the top end of the second transmission rod.

[0006] Preferably, the outer side of the second transmission rod is provided with multiple sets of stirring blades, and the outer side of the second transmission rod is fixedly connected to one end of the stirring blades. The bottom end of the second transmission rod is fixedly connected to the top end of the scraper, and the bottom end of the scraper abuts against the bottom end of the lower body of the device.

[0007] Preferably, the outer side of the second transmission rod is fixedly connected to the inner wall of the rotating block near the upper position. A fixed sleeve is sleeved on the outer side of the rotating block, and the rotating block is rotatably connected to the fixed sleeve. Two sets of first fixing frames are provided on the outer side of the fixed sleeve, and the outer side of the fixed sleeve is fixedly connected to one end of the first fixing frame. The other end of the first fixing frame is fixedly connected to the inner wall of the lower main body of the device.

[0008] Preferably, a shield is fitted above the first helical gear and the second helical gear. The front and rear ends of the shield are also provided with second fixing frames. The outer side of the shield is fixedly connected to one end of the second fixing frame, and the other end of the second fixing frame is fixedly connected to a fixing plate. The fixing plate is fixedly connected to the outer side of the fixing block.

[0009] Preferably, the left end of the lower body of the device is fixedly connected to the right end of the exhaust pipe, and the right end of the filter element is inserted inside the left end of the exhaust pipe, and the filter element is slidably connected to the exhaust pipe.

[0010] Preferably, the exhaust pipe is provided with a first fixing box at both the front and rear ends, and the exhaust pipe is fixedly connected to the first fixing box. The right end of the positioning plug is inserted inside the first fixing box, and the positioning plug is slidably connected to the first fixing box. The left end of the positioning plug is fixedly connected to one end of the third fixing frame, and the other end of the third fixing frame is fixedly connected to the outside of the filter element.

[0011] Preferably, a positioning rod is also inserted inside the first fixing box and the positioning block, and the positioning rod is also slidably connected to the first fixing box and the positioning block. The other end of the positioning rod is fixedly connected to the moving plate. The moving plate is fixedly connected to one end of the moving block. The moving block is sleeved on the outside of the guide rod, and the guide rod is slidably connected to the moving block. The guide rod is fixedly connected to the inner wall of the second fixing box. The second fixing box is fixedly connected to the first fixing box. Return springs are also provided at the upper and lower ends of the outer side of the guide rod. One end of the return spring is fixedly connected to the inner wall of the second fixing box, and the other end of the return spring is fixedly connected to the moving block.

[0012] Preferably, the other end of the movable block is fixedly connected to one end of the first fixed seat, and the other end of the first fixed seat is sleeved with one end of the first rotating head, and the first fixed seat is rotatably connected to the first rotating head. The other end of the first rotating head is fixedly connected to one end of the rotating push rod, and the other end of the rotating push rod is fixedly connected to one end of the second rotating head. The other end of the second rotating head is sleeved on the outside of one end of the second fixed seat, and the second rotating head is rotatably connected to the second fixed seat. The other end of the second fixed seat is fixedly connected to the pressing plate.

[0013] Preferably, two sets of sealing rings are provided on the outer side of the filter element near the right side, and the outer side of the filter element is fixedly connected to the inner wall of the sealing ring, and the outer side of the sealing ring abuts against the inner wall of the exhaust pipe.

[0014] Preferably, a method for preventing scaling in limestone slurry includes the following steps: S1: The start motor drives the first transmission rod and the first helical gear to rotate. During the rotation of the first helical gear, the second helical gear and the second transmission rod will be driven to rotate simultaneously. When the second transmission rod rotates, it will drive the stirring blade to rotate and stir, preventing scale buildup in the wastewater at the bottom of the device's lower body. At the same time, the second transmission rod drives the scraper to rotate and scrape along the bottom of the device's lower body. S2: The gas generated during the stirring process will be discharged outward through the exhaust pipe and filter element, and filtered by the filter element. When it needs to be replaced, simply press the two end pressing plates inward to drive the second fixed seat and the second rotating head to move synchronously. The second rotating head pushes the rotating push rod to rotate. When the rotating push rod rotates, it will drive the first rotating head to rotate along the outside of the first fixed seat, and push the first fixed seat and the moving block to move outward at the same time. The movement of the moving block will drive the moving plate and the positioning rod to move outward at the same time until the positioning rod is completely disengaged from the inside of the positioning block. S3: Pull the filter element outwards, causing it to move outwards along the inside of the exhaust pipe until it detaches. At the same time, the filter element will move the sealing ring outwards along the inside of the exhaust pipe to complete the removal.

[0015] The advantages of this invention are: 1. This invention achieves the function of stirring and preventing scaling through the structural design of the anti-scaling exhaust filtration mechanism, which solves the problem that existing devices do not have anti-scaling components. Since the limestone slurry will fall back to the slurry pool at the bottom of the tower after being sprayed and washed by the flue gas, long-term static retention will easily cause solid matter to settle and accumulate, thus forming a plate scale layer. This invention reduces scaling. 2. This invention achieves the function of exhaust filtration through the structural design of the anti-scaling exhaust filtration mechanism. It solves the problem that if an exhaust filtration component is not installed, bubbles and process waste gas will be generated during slurry stirring, spraying and chemical reaction. If exhaust is not performed in time, it will easily lead to pressure buildup and airflow turbulence in the tower, thus improving the stability of the device. 3. Through the structural design of the anti-scaling exhaust filtration mechanism, this invention achieves the function of preventing exhaust gas from being discharged through gaps. This solves the problem that if no sealing components are provided, exhaust gas can easily seep out through gaps during the exhaust process, thus causing environmental pollution, and improves the sealing effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the first structure of the anti-scaling exhaust filtration mechanism of the present invention; Figure 4 This is a schematic diagram of the second structure of the anti-scaling exhaust filtration mechanism of the present invention; Figure 5 This is a schematic diagram of the third structure of the anti-scaling exhaust filtration mechanism of the present invention; Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 7 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 8 For the present invention Figure 5 Enlarged structural diagram at point C.

[0018] In the diagram: 1. Lower main body of the device; 2. Upper main body of the device; 10. Motor; 11. First transmission rod; 12. First helical gear; 13. Second helical gear; 14. Second transmission rod; 15. Stirring blade; 16. Scraper; 17. Rotating block; 18. Fixed sleeve block; 19. First fixed frame; 20. Shielding cover; 21. Second fixed frame; 22. Fixed plate; 23. Exhaust pipe; 24. Filter element; 25. First fixed box; 26. Positioning insert block; 27. Third fixed frame; 28. Positioning insert rod; 29. ​​Moving plate; 30. Moving block; 31. First fixed seat; 32. First rotating head; 33. Rotating push rod; 34. Second rotating head; 35. Second fixed seat; 36. Pressing plate; 37. Guide rod; 38. Second fixed box; 39. Return spring; 40. Sealing ring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0020] Please see Figures 1-8 As shown, a desulfurization slurry anti-scaling treatment device and method includes a lower body 1; the top of the lower body 1 is fixedly connected to the bottom of the upper body 2, and an anti-scaling exhaust filtration mechanism is provided inside the lower body 1. The anti-scaling exhaust filtration mechanism includes a motor 10, which is located on the right side of the outer side of the lower body 1 of the device and is fixedly connected to the lower body 1. The left side of the motor 10 passes through the outer side of the lower body 1 and reaches the interior of the lower body 1, where it is fixedly connected to the right side of the first transmission rod 11. The left side of the first transmission rod 11 is fixedly connected to the right side of the first helical gear 12. The first helical gear 12 meshes with the second helical gear 13, and the bottom end of the second helical gear 13 is fixedly connected to the top end of the second transmission rod 14. Multiple sets of stirring blades 15 are arranged on the outer side of the second transmission rod 14. The second transmission rod 14 is a circular rod design, and its outer side is fixedly connected to one end of the stirring blade 15. The bottom end of the second transmission rod 14 is fixedly connected to the top end of the scraper 16, and the bottom end of the scraper 16 abuts against the bottom end of the lower body 1 of the device. The outer side of the second transmission rod 14 is fixedly connected to the inner wall of the rotating block 17 near the upper position. A fixed sleeve 18 is fitted on the outer side of the rotating block 17, and the rotating block 17 is rotatably connected to the fixed sleeve 18. The rotating block 17 is a circular design, and two sets of first fixing frames 19 are provided on the outer side of the fixed sleeve 18, and the outer side of the fixed sleeve 18 is connected to the first fixing frame. One end of the first fixing bracket 19 is fixedly connected, and the other end of the first fixing bracket 19 is fixedly connected to the inner wall of the lower body 1 of the device; a shield 20 is fitted above the first helical gear 12 and the second helical gear 13. The top of the shield 20 is tapered. The front and rear ends of the outer side of the shield 20 are also provided with second fixing brackets 21. The outer side of the shield 20 is fixedly connected to one end of the second fixing bracket 21, and the other end of the second fixing bracket 21 is fixedly connected to the fixing plate 22. The fixing plate 22 is fixedly connected to the outer side of the fixing sleeve block 18; the left side of the outer side of the lower body 1 of the device is fixed to the right side of the exhaust pipe 23. The exhaust pipe 23 is connected to the filter element 24, which is slidably connected to the filter element 24. The exhaust pipe 23 is also provided with a first fixing box 25 at both the front and rear ends of the outer side of the exhaust pipe 23. The outer side of the exhaust pipe 23 is fixedly connected to the first fixing box 25. The positioning block 26 is square in design and is slidably connected to the first fixing box 25. The left end of the positioning block 26 is fixedly connected to one end of the third fixing frame 27, and the other end of the third fixing frame 27 is fixedly connected to the outer side of the filter element 24.The first fixing box 25 and the positioning plug 26 also have a positioning plug 28 inserted inside. One end of the positioning plug 28 is designed with a bevel, and the first fixing box 25 and the positioning plug 26 are also slidably connected to the positioning plug 28. The other end of the positioning plug 28 is fixedly connected to the moving plate 29. The moving plate 29 is fixedly connected to one end of the moving block 30. The moving block 30 is sleeved on the outside of the guide rod 37. The inner wall of the moving block 30 is designed with a circular shape, and the moving block 30 is slidably connected to the guide rod 37. The guide rod 37 is fixedly connected to the inner wall of the second fixing box 38. The second fixing box 38 is fixedly connected to the first fixing box 25. The upper and lower ends of the outer side of the guide rod 37 are also provided with return springs 39. One end of the return spring 39 is connected to the first fixing box 25. The inner wall of the two fixed boxes 38 is fixedly connected, and the other end of the return spring 39 is fixedly connected to the moving block 30; the other end of the moving block 30 is fixedly connected to one end of the first fixed seat 31, and the other end of the first fixed seat 31 is sleeved with one end of the first rotating head 32, and the first fixed seat 31 is rotatably connected to the first rotating head 32. The other end of the first rotating head 32 is fixedly connected to one end of the rotating push rod 33, and the other end of the rotating push rod 33 is fixedly connected to one end of the second rotating head 34. The rotating push rod 33 is a round rod design. The other end of the second rotating head 34 is sleeved on the outside of one end of the second fixed seat 35, and the second rotating head 34 is rotatably connected to the second fixed seat 35. The other end of the second fixed seat 35 is fixedly connected to the pressing plate 36. During operation, the motor 10 on the side of the lower main body 1 is started. When the motor 10 starts, it will drive the first transmission rod 11 and the first helical gear 12 to rotate synchronously. When the first helical gear 12 rotates, it will drive the second helical gear 13 and the second transmission rod 14 to rotate synchronously. When the second transmission rod 14 rotates, it will drive the stirring blade 15 to stir the liquid at the bottom of the lower main body 1 to prevent scaling. At the same time, it will drive the scraper 16 to rotate. When the scraper 16 rotates, the bottom of the scraper 16 will scrape the bottom of the interior of the lower main body 1 to prevent adhesion. When the second transmission rod 14 rotates, it will drive the rotating block... 17 rotates along the inside of the fixed sleeve 18, and the first fixed frame 19 is used to fix and support the position of the fixed sleeve 18. At the same time, the shield 20 set above the first helical gear 12 and the second helical gear 13 can effectively shield and prevent sewage from directly washing the first helical gear 12 and the second helical gear 13. The second fixed frame 21 and the fixed plate 22 can be used to fix and support the position of the shield 20. When the gas generated during the stirring and scraping process will be discharged outward through the exhaust pipe 23, it will be filtered by the filter element 24 during the discharge process. When the filter element 24 needs to be removed for easy replacement after a long period of filtration, only the front and rear ends need to be removed. The pressing plate 36 presses inward simultaneously. When the pressing plate 36 is pressed and moved, it will push the second fixed seat 35 and the second rotating head 34 to move synchronously. During the movement, the second rotating head 34 will rotate along the outer side of the second fixed seat 35, and drive the rotating push rod 33 to move and rotate simultaneously. When the rotating push rod 33 rotates, it will drive the first rotating head 32 to rotate along the outer side of the first fixed seat 31, and at the same time apply an outward pushing force to the first fixed seat 31, causing the first fixed seat 31 to move outward. When the first fixed seat 31 moves outward, it will drive the moving block 30 along the guide rod 3 inside the second fixed box 38. 7. Move outwards and simultaneously pull the return spring 39 to extend. Similarly, when the moving block 30 moves, it will drive the moving plate 29 to move outwards. When the moving plate 29 moves outwards, it will drive the positioning rod 28 to move outwards along the inside of the first fixed box 25 and the positioning block 26 until it is completely separated from the inside of the positioning block 26. Then, pull the filter element 24 outwards and drive the filter element 24 to move outwards along the inside of the exhaust pipe 23 until it is completely separated. At the same time, the filter element 24 drives the third fixed frame 27 and the positioning block 26 to move outwards, and the positioning block 26 moves outwards along the inside of the first fixed box 25 until it is separated. Example 2

[0021] Please see Figure 5 and Figure 8As shown, in the first comparative embodiment of the present invention, two sets of sealing rings 40 are provided on the outer side of the filter element 24 near the right side, and the outer side of the filter element 24 is fixedly connected to the inner wall of the sealing ring 40. The outer side of the sealing ring 40 abuts against the inner wall of the exhaust pipe 23. The sealing ring 40 is made of rubber. A method for preventing scaling in limestone slurry, comprising the following steps: S1: The start motor 10 drives the first transmission rod 11 and the first helical gear 12 to rotate. During the rotation of the first helical gear 12, the second helical gear 13 and the second transmission rod 14 will be driven to rotate simultaneously. When the second transmission rod 14 rotates, it will drive the stirring blade 15 to rotate and stir, preventing scale buildup in the wastewater at the bottom of the lower body 1 of the device. At the same time, the second transmission rod 14 drives the scraper 16 to rotate and scrape along the bottom of the lower body 1 of the device. S2: The gas generated during the stirring process will be discharged outward through the exhaust pipe 23 and the filter element 24, and filtered by the filter element 24. When it needs to be replaced, simply press the two end pressing plates 36 inward, which will drive the second fixed seat 35 and the second rotating head 34 to move synchronously. The second rotating head 34 pushes the rotating push rod 33 to rotate. When the rotating push rod 33 rotates, it will drive the first rotating head 32 to rotate along the outside of the first fixed seat 31, and push the first fixed seat 31 and the moving block 30 to move outward at the same time. When the moving block 30 moves outward, it will drive the moving plate 29 and the positioning rod 28 to move outward at the same time, until the positioning rod 28 is completely disengaged from the inside of the positioning block 26. S3: Pull the filter element 24 outwards, causing it to move outwards along the inside of the exhaust pipe 23 until it is detached. At the same time, the filter element 24 will cause the sealing ring 40 to move outwards along the inside of the exhaust pipe 23 to complete the removal. During operation, the filter element 24 moves outward along the inside of the exhaust pipe 23, which in turn moves the sealing ring 40 outward along the inside of the exhaust pipe 23. When the filter element 24 is inserted into the exhaust pipe 23, the outer side of the sealing ring 40 will abut against the inner wall of the exhaust pipe 23, thus achieving a sealing effect.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A desulfurization slurry anti-scaling treatment device, comprising a lower main body (1); characterized in that: The top of the lower body (1) of the device is fixedly connected to the bottom of the upper body (2) of the device, and the lower body (1) of the device is provided with an anti-scaling exhaust filtration mechanism. The anti-scaling exhaust filtration mechanism includes a motor (10), which is located on the right side of the outer side of the lower body (1) of the device and is fixedly connected to the lower body (1). The left side of the motor (10) passes through the outer side of the lower body (1) of the device and reaches the interior of the lower body (1) of the device and is fixedly connected to the right side of the first transmission rod (11). The left side of the first transmission rod (11) is fixedly connected to the right side of the first helical gear (12). The first helical gear (12) meshes with the second helical gear (13). The bottom end of the second helical gear (13) is fixedly connected to the top end of the second transmission rod (14).

2. The anti-scaling treatment device for desulfurization slurry according to claim 1, characterized in that: The second transmission rod (14) is provided with multiple sets of stirring blades (15) on its outer side, and the outer side of the second transmission rod (14) is fixedly connected to one end of the stirring blades (15). The bottom end of the second transmission rod (14) is fixedly connected to the top end of the scraper (16), and the bottom end of the scraper (16) abuts against the bottom end of the lower body (1) of the device.

3. The anti-scaling treatment device for desulfurization slurry according to claim 2, characterized in that: The outer side of the second transmission rod (14) is fixedly connected to the inner wall of the rotating block (17) near the upper position. The outer side of the rotating block (17) is fitted with a fixed sleeve (18), and the rotating block (17) is rotatably connected to the fixed sleeve (18). Two sets of first fixing frames (19) are provided on the outer side of the fixed sleeve (18), and the outer side of the fixed sleeve (18) is fixedly connected to one end of the first fixing frame (19). The other end of the first fixing frame (19) is fixedly connected to the inner wall of the lower body (1) of the device.

4. The anti-scaling treatment device for desulfurization slurry according to claim 3, characterized in that: A shield (20) is fitted above the first helical gear (12) and the second helical gear (13). A second fixing frame (21) is also provided at the front and rear ends of the shield (20). The shield (20) is fixedly connected to one end of the second fixing frame (21), and the other end of the second fixing frame (21) is fixedly connected to the fixing plate (22). The fixing plate (22) is fixedly connected to the outside of the fixing sleeve block (18).

5. The anti-scaling treatment device for desulfurization slurry according to claim 4, characterized in that: The lower body (1) of the device is fixedly connected to the right end of the exhaust pipe (23) at the left side of the outer side. The right end of the filter element (24) is inserted inside the left side of the exhaust pipe (23), and the filter element (24) is slidably connected to the exhaust pipe (23).

6. The anti-scaling treatment device for desulfurization slurry according to claim 5, characterized in that: The exhaust pipe (23) is also provided with a first fixing box (25) at both the front and rear ends. The exhaust pipe (23) is fixedly connected to the first fixing box (25). The right end of the positioning block (26) is inserted inside the first fixing box (25). The positioning block (26) is slidably connected to the first fixing box (25). The left end of the positioning block (26) is fixedly connected to one end of the third fixing frame (27). The other end of the third fixing frame (27) is fixedly connected to the outside of the filter element (24).

7. The anti-scaling treatment device for desulfurization slurry according to claim 6, characterized in that: The first fixing box (25) and the positioning plug (26) are also equipped with a positioning plug (28) at one end, and the first fixing box (25) and the positioning plug (26) are also slidably connected with the positioning plug (28). The other end of the positioning plug (28) is fixedly connected to the moving plate (29). The moving plate (29) is fixedly connected to one end of the moving block (30). The moving block (30) is sleeved on the outside of the guide rod (37), and the moving block (30) is slidably connected with the guide rod (37). The guide rod (37) is fixedly connected to the inner wall of the second fixing box (38). The second fixing box (38) is fixedly connected to the first fixing box (25). The upper and lower ends of the outer side of the guide rod (37) are also equipped with a return spring (39). One end of the return spring (39) is fixedly connected to the inner wall of the second fixing box (38), and the other end of the return spring (39) is fixedly connected to the moving block (30).

8. The anti-scaling treatment device for desulfurization slurry according to claim 7, characterized in that: The other end of the movable block (30) is fixedly connected to one end of the first fixed seat (31). The other end of the first fixed seat (31) is sleeved with one end of the first rotating head (32), and the first fixed seat (31) is rotatably connected to the first rotating head (32). The other end of the first rotating head (32) is fixedly connected to one end of the rotating push rod (33). The other end of the rotating push rod (33) is fixedly connected to one end of the second rotating head (34). The other end of the second rotating head (34) is sleeved on the outside of one end of the second fixed seat (35), and the second rotating head (34) is rotatably connected to the second fixed seat (35). The other end of the second fixed seat (35) is fixedly connected to the pressing plate (36).

9. The anti-scaling treatment device for desulfurization slurry according to claim 8, characterized in that: Two sets of sealing rings (40) are provided on the outer side of the filter element (24) near the right side, and the outer side of the filter element (24) is fixedly connected to the inner wall of the sealing ring (40), and the outer side of the sealing ring (40) abuts against the inner wall of the exhaust pipe (23).

10. A method for preventing scaling in limestone slurry, comprising the anti-scaling device for desulfurization slurry as described in any one of claims 1-9, characterized in that: The method includes the following steps: S1: Start the motor (10) to drive the first transmission rod (11) and the first helical gear (12) to rotate. During the rotation of the first helical gear (12), the second helical gear (13) and the second transmission rod (14) will be driven to rotate simultaneously. When the second transmission rod (14) rotates, it will drive the stirring blade (15) to rotate and stir, preventing scale formation in the wastewater at the bottom of the lower body (1) of the device. At the same time, the second transmission rod (14) drives the scraper (16) to rotate and scrape along the bottom of the lower body (1) of the device. S2: The gas generated during the stirring process will be discharged outward through the exhaust pipe (23) and the filter element (24), and filtered by the filter element (24). When it needs to be replaced, simply press the two end pressing plates (36) inward to drive the second fixed seat (35) and the second rotating head (34) to move synchronously. The second rotating head (34) pushes the rotating push rod (33) to rotate. When the rotating push rod (33) rotates, it will drive the first rotating head (32) to rotate along the outside of the first fixed seat (31) and push the first fixed seat (31) and the moving block (30) to move outward at the same time. When the moving block (30) moves outward, it will drive the moving plate (29) and the positioning rod (28) to move outward at the same time until the positioning rod (28) is completely separated from the inside of the positioning block (26). S3: Pull the filter element (24) outward, causing the filter element (24) to move outward along the inside of the exhaust pipe (23) until it is detached. At the same time, the filter element (24) causes the sealing ring (40) to move outward along the inside of the exhaust pipe (23) to complete the removal.

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