A new type of mechanical seal device with adjustable waterless desulfurization circulating pump

Abstract

This invention relates to the field of desulfurization circulating pump technology, specifically disclosing a novel adjustable waterless mechanical seal device for a desulfurization circulating pump. The device includes a drive shaft ring, a rotating ring, and a stationary ring. The rotating ring is located on one side of the drive shaft ring, and the rotating ring and stationary ring abut against each other. A first rotating component, a second rotating component, and a thrust ring are sequentially arranged between the drive shaft ring and the rotating ring. The outer wall of the first rotating component is provided with multiple limiting mechanisms for assembling itself with the second rotating component, the thrust ring, and the rotating ring. A first sealing ring is provided between the thrust ring and the rotating ring. A second sealing ring is fitted onto the outer wall of the stationary ring. The interior of the rotating ring is provided with multiple ejection mechanisms to assist in the quick disassembly of the first sealing ring. In this invention, by setting multiple limiting mechanisms to limit the assembly of related components of the rotating ring, the related components of the rotating ring are easily disassembled and assembled, improving the efficiency of maintenance and replacement of the entire rotating ring component and reducing adverse effects on the use of the circulating pump.

Description

Technical Field

[0001] This invention relates to the field of desulfurization circulating pump technology, and specifically to a novel adjustable waterless mechanical seal device for a desulfurization circulating pump. Background Technology

[0002] The desulfurization circulating pump is a core piece of equipment in a flue gas desulfurization system. It primarily transports limestone and gypsum slurry, achieving efficient removal of sulfur dioxide from the flue gas through circulating spraying. It also possesses characteristics such as corrosion resistance, abrasion resistance, and high flow rate with low head. Its performance directly affects desulfurization efficiency and equipment lifespan. The slurry transported by the desulfurization circulating pump contains high concentrations of limestone, gypsum particles, corrosive chloride ions, and acidic substances. Leakage can pollute soil and water sources, violating environmental regulations; it can corrode the pump body, pipelines, and motor, causing equipment failure; and solid particles in the slurry may clog pipelines or damage seals, leading to system shutdown. By installing a mechanical seal device in the desulfurization circulating pump, a micron-level liquid film is formed between the end faces through the tight fit of the dynamic and static rings, preventing slurry leakage and avoiding direct contact wear between the end faces.

[0003] Mechanical seal devices typically consist of multiple precision components. After a period of use, the rotating ring and its related components may become difficult to disassemble due to wear, corrosion, or aging. For example, the sealing ring may harden due to aging, leading to breakage during disassembly; the spring may become difficult to remove due to prolonged friction with the mounting point. Because these components are difficult to disassemble, workers may use hard objects to strike them or apply excessive force during disassembly, which can easily affect the subsequent use of the entire rotating ring and is detrimental to the operation of the mechanical seal device. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and to propose a novel adjustable waterless mechanical seal device for a desulfurization circulating pump.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel adjustable anhydrous mechanical seal device for a desulfurization circulating pump includes a drive shaft ring, a rotating ring, and a stationary ring. The rotating ring is disposed on one side of the drive shaft ring, and the rotating ring and the stationary ring abut against each other. A first rotating component, a second rotating component, and a thrust ring are sequentially arranged between the drive shaft ring and the rotating ring. The outer wall of the first rotating component is provided with multiple limiting mechanisms for assembling itself together with the second rotating component, the thrust ring, and the rotating ring. A first sealing ring is provided between the thrust ring and the rotating ring. A second sealing ring is fitted onto the outer wall of the stationary ring. The interior of the rotating ring is provided with multiple ejection mechanisms for assisting in the quick disassembly of the first sealing ring.

[0007] Optionally, a first rotating groove is provided on the outer wall of the transmission shaft ring near the moving ring, and a first rotating part is provided at one end of the first rotating component near the transmission shaft ring, and the first rotating part is rotatably connected to the first rotating groove.

[0008] Optionally, the thrust ring has a second rotating groove on the side near the drive shaft ring, and the second rotating component has a second rotating part at the end near the thrust ring, and the second rotating part is rotatably connected to the second rotating groove.

[0009] Optionally, the outer wall of the transmission shaft ring near the first rotating member is provided with multiple mounting holes, and a first spring is placed inside each of the multiple mounting holes. The outer wall of the second rotating member near the transmission shaft ring is provided with multiple cylindrical protrusions, and the ends of the multiple first springs away from the mounting holes are all fitted onto the surface of the corresponding protrusions.

[0010] Optionally, the outer wall of the thrust ring and the moving ring that are close to each other is provided with a first groove and a second groove, and the first sealing ring is installed inside the cavity enclosed by the first groove and the second groove.

[0011] Optionally, the ejection mechanism includes multiple rectangular slots formed on the outer wall of the moving ring near the thrust ring. Each of the multiple rectangular slots is connected to the second groove, and each of the multiple rectangular slots has a top block installed inside. Each of the multiple top blocks is connected to the rectangular slots by a second spring. The ends of the multiple top blocks away from the second spring are adapted to the shape of the inner wall of the second groove.

[0012] Optionally, the limiting mechanism includes multiple rotating frames rotatably mounted on the outer wall of the first rotating component. The outer wall of the rotating part at one end of each of the multiple rotating frames is provided with a threaded portion. A first nut is threaded onto the surface of each of the multiple threaded portions. A movable frame is provided inside each of the multiple rotating frames.

[0013] Optionally, a lead screw is rotatably installed inside the rotating frame, and a drive end is provided at the end of the lead screw away from the rotating part. The moving frame is threadedly engaged with the outer wall of the lead screw. Guide grooves are provided on both inner walls of the rotating frame, and guide blocks that are compatible with the limiting grooves are installed on both outer walls of the moving frame.

[0014] Optionally, the movable frame has a first movable groove inside, a movable block is installed inside the first movable groove, and the movable frame also has two second movable grooves connected to the first movable groove. One of the second movable grooves is a through groove. A screw is installed at the end of the movable block near the through groove, and a second nut is threaded through the through groove onto the screw.

[0015] Optionally, a limiting block is installed at the bottom of the moving block, a circular groove adapted to the limiting block is opened on the outer wall of the moving ring, and two limiting grooves adapted to the limiting block are opened on the outer wall of the thrust ring.

[0016] The beneficial effects of this invention are:

[0017] 1. In this invention, multiple limiting mechanisms are set to limit the assembly of the relevant components of the rotating ring, making it easy to disassemble and assemble the relevant components of the rotating ring, improving the efficiency of maintenance and replacement of the entire rotating ring component, and reducing the adverse effects on the use of the circulating pump.

[0018] 2. In this invention, if it is necessary to adjust the compression of multiple first springs to ensure that the sealing end face contact pressure of the rotating ring and the stationary ring is in a suitable state, multiple second nuts can be loosened in sequence to release the limiting fixation of multiple moving blocks. Since scale lines are provided on the outer wall of multiple moving frames, multiple moving blocks can be manually pushed to move the same distance in the corresponding first moving groove towards the drive shaft ring, so that the compression of multiple first springs can be flexibly adjusted. After the position of multiple moving blocks is adjusted, multiple second nuts are tightened in sequence to achieve the adjustable effect of the mechanical seal assembly, ensuring that the rotating ring component can be flexibly adjusted during use and maintaining a good contact state between the rotating ring and the stationary ring.

[0019] 3. In this invention, if only the first sealing ring needs to be replaced, after the moving ring is removed from the shaft surface, multiple drive ends can be loosened manually in sequence to drive multiple lead screws to rotate inside the corresponding rotating frame. This causes multiple moving frames to move away from the transmission shaft ring inside the corresponding rotating frame, which in turn pushes the moving ring away from the thrust ring until there is enough gap between the moving ring and the thrust ring for the first sealing ring to be removed. At this point, multiple second springs of the ejection mechanism can be used to elastically reset the ejection mechanism, driving multiple top blocks to push the first sealing ring outward to the outside of the second groove. This facilitates the individual removal of the old first sealing ring without disassembling other components, thus improving the removal efficiency of the first sealing ring.

[0020] 4. In this invention, since multiple movable frames can be rotated by corresponding lead screws, they can be moved and adjusted inside the corresponding rotating frames. Before the entire mechanical seal assembly is assembled into the circulating pump, the cooperation between the relevant components of two limiting mechanisms can drive the limiting blocks on the two movable blocks to abut against the outer wall of the stationary ring near the rotating ring. Finally, by driving the two lead screws to retract the two movable frames, the two limiting blocks can be simultaneously driven to abut tightly against the outer wall of the stationary ring, and the stationary ring can be tightly clamped and fixed, which facilitates the simultaneous carrying and transportation of the stationary ring and the rotating ring. Attached Figure Description

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a novel adjustable waterless mechanical seal device for a desulfurization circulating pump proposed in this invention.

[0023] Figure 2 This is a schematic diagram of the structure in this invention where the moving ring and the stationary ring are separated;

[0024] Figure 3 This is an exploded view of the components related to the dynamic ring in this invention;

[0025] Figure 4 for Figure 3 A structural diagram from another angle;

[0026] Figure 5 This is a schematic diagram of the rotating collar and the first rotating component in this invention;

[0027] Figure 6 This is a schematic diagram of the limiting mechanism in this invention;

[0028] Figure 7 This is a schematic diagram of the structure in this invention where the movable frame and the rotating frame are separated;

[0029] Figure 8 This is a schematic diagram of the moving ring and ejection mechanism in this invention.

[0030] In the diagram: 1. Drive shaft collar; 2. First rotating component; 3. Second rotating component; 4. Thrust ring; 5. Moving ring; 6. Circular groove; 7. Stationary ring; 8. Second sealing ring; 9. Rotating frame; 10. Moving frame; 11. First spring; 12. Mounting hole; 13. First sealing ring; 14. First groove; 15. Protrusion; 16. Limiting groove; 17. Second groove; 18. Top block; 19. First rotating groove; 20. First rotating part; 21. Second rotating part; 22. Second rotating groove; 23. Threaded part; 24. First nut; 25. Lead screw; 26. First moving groove; 27. Second moving groove; 28. Moving block; 29. ​​Screw; 30. Second nut; 31. Drive end; 32. Guide groove; 33. Guide block; 34. Rectangular groove; 35. Second spring; 36. Limiting block. Detailed Implementation

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0032] Reference Figures 1-8A novel adjustable waterless mechanical seal device for a desulfurization circulating pump includes a drive shaft ring 1, a rotating ring 5, and a stationary ring 7. The rotating ring 5 is disposed on one side of the drive shaft ring 1, and the rotating ring 5 and the stationary ring 7 abut against each other. A first rotating component 2, a second rotating component 3, and a thrust ring 4 are sequentially arranged between the drive shaft ring 1 and the rotating ring 5. The outer wall of the first rotating component 2 is provided with multiple limiting mechanisms for assembling itself together with the second rotating component 3, the thrust ring 4, and the rotating ring 5. A first sealing ring 13 is provided between the thrust ring 4 and the rotating ring 5. A second sealing ring 8 is fitted onto the outer wall of the stationary ring 7. The interior of the rotating ring 5 is provided with multiple ejection mechanisms for assisting in the quick disassembly of the first sealing ring 13.

[0033] As a technical optimization of the present invention, a first rotating groove 19 is formed on the outer wall of the transmission shaft ring 1 near the moving ring 5, and a first rotating part 20 is provided at one end of the first rotating member 2 near the transmission shaft ring 1. The first rotating part 20 is rotatably connected to the first rotating groove 19. The first rotating member 2 can rotate synchronously outside the transmission shaft ring 1 by means of the rotation of the first rotating part 20 inside the first rotating groove 19.

[0034] As a technical optimization of the present invention, a second rotating groove 22 is provided on the side of the thrust ring 4 near the transmission shaft ring 1, and a second rotating part 21 is provided at one end of the second rotating member 3 near the thrust ring 4. The second rotating part 21 is rotatably connected to the second rotating groove 22. The second rotating member 3 can rotate synchronously outside the thrust ring 4 by means of the rotation of the second rotating part 21 inside the second rotating groove 22.

[0035] As a technical optimization of the present invention, the outer wall of the drive shaft ring 1 near the first rotating member 2 is provided with multiple mounting holes 12, and a first spring 11 is placed inside each of the multiple mounting holes 12. The outer wall of the second rotating member 3 near the drive shaft ring 1 is provided with multiple cylindrical protrusions 15, and the ends of the multiple first springs 11 away from the mounting holes 12 are all fitted onto the surface of the corresponding protrusions 15. The multiple first springs 11 are key elastic elements in the entire mechanical seal assembly. During installation, they are compressed to generate initial elastic force, which presses the sealing end faces between the rotating ring 5 and the stationary ring 7 together to form an initial sealing surface. During the operation of the mechanical seal, the gap between the sealing end faces between the rotating ring 5 and the stationary ring 7 will increase due to frictional wear or temperature changes. The multiple first springs 11 automatically compensate for the wear through continuous elastic deformation, maintaining the end face contact pressure.

[0036] As a technical optimization of the present invention, a first groove 14 and a second groove 17 are respectively formed on the outer wall of the side of the thrust ring 4 and the rotating ring 5 that are close to each other, and a first sealing ring 13 is installed inside the cavity enclosed by the first groove 14 and the second groove 17. By setting the first sealing ring 13, the sealing performance between the thrust ring 4 and the rotating ring 5 can be improved, and a certain shock absorption effect can be provided to the rotating ring 5, reducing the wear of the sealing end face of the rotating ring 5.

[0037] As a technical optimization of the present invention, the ejection mechanism includes multiple rectangular grooves 34 formed on the outer wall of the moving ring 5 near the thrust ring 4. Each rectangular groove 34 is connected to a second groove 17, and each rectangular groove 34 contains a top block 18. The top blocks 18 are connected to the rectangular grooves 34 by second springs 35. The ends of the top blocks 18 away from the second springs 35 are adapted to the shape of the inner wall of the second groove 17. After the first sealing ring 13 is installed inside the first groove 14 and the second groove 17, it compresses the top blocks 18, causing the second springs 35 to contract under pressure, thus retracting the top blocks 18 into the corresponding rectangular grooves 34. After the contact between the moving ring 5 and the thrust ring 4 is released, the first sealing ring 13 is no longer affected by pressure. With the elastic reset of the second springs 35, the top blocks 18 move outward from the corresponding rectangular grooves 34, automatically ejecting the first sealing ring 13 from the second groove 17, achieving the effect of quickly removing the first sealing ring 13.

[0038] As a technical optimization of the present invention, the limiting mechanism includes multiple rotating frames 9 rotatably mounted on the outer wall of the first rotating member 2. Each rotating frame 9 has a threaded portion 23 on the outer wall of its rotating part at one end. A first nut 24 is threaded onto the surface of each threaded portion 23. A movable frame 10 is provided inside each rotating frame 9. The rotating frame 9 can be adjusted by rotating its two ends on the outer wall of the first rotating member 2. After the rotating frame 9 rotates to a designated position, the position of the rotating frame 9 is limited and fixed by tightening the first nut 24 threaded onto the surface of the threaded portion 23.

[0039] As a technical optimization of the present invention, a lead screw 25 is rotatably installed inside the rotating frame 9. A drive end 31 is provided at the end of the lead screw 25 away from the rotating part. The movable frame 10 is threadedly engaged with the outer wall of the lead screw 25. Guide grooves 32 are provided on both inner walls of the rotating frame 9, and guide blocks 33 that are adapted to the limiting grooves 16 are installed on both outer walls of the movable frame 10. Since the movable frame 10 is threadedly connected to the lead screw 25, the lead screw 25 can be rotated inside the rotating frame 9 by manually turning the drive end 31, so that the movable frame 10 can move and adjust inside the rotating frame 9 as the lead screw 25 rotates.

[0040] As a technical optimization of the present invention, the movable frame 10 has a first movable groove 26 inside, and a movable block 28 is installed inside the first movable groove 26. The movable frame 10 also has two second movable grooves 27 connected to the first movable groove 26. One of the second movable grooves 27 is a through groove. A screw 29 is installed at the end of the movable block 28 near the through groove, and a second nut 30 is threaded through the through groove onto the screw 29. Since both second movable grooves 27 are connected to the first movable groove 26, the movable block 28 can move back and forth inside the first movable groove 26, simultaneously driving the screw 29 to move synchronously inside the corresponding second movable groove 27. After the movable block 28 moves to a suitable position, the second nut 30 is threaded onto the surface of the screw 29 and tightened, thus limiting and fixing the moved block 28.

[0041] As a technical optimization of the present invention, a limiting block 36 is installed at the bottom of the moving block 28, and a circular groove 6 adapted to the limiting block 36 is opened on the outer wall of the moving ring 5. Two limiting grooves 16 adapted to the limiting block 36 are opened on the outer wall of the thrust ring 4. After the moving block 28 moves to the designated position inside the first moving groove 26, it cooperates with the rotating frame 9 to drive the moving frame 10 to rotate and adjust, thereby driving the limiting block 36 to move into the corresponding limiting groove 16.

[0042] In this invention, before assembling and using the relevant components of the mechanical seal assembly, the user first checks whether the mechanical seal model and specifications match the equipment requirements. Then, the user checks whether the components such as the rotating ring 5, stationary ring 7, and thrust ring 4 are intact, without cracks, scratches, or deformation. The user confirms that the materials of the first sealing ring 13 and the second sealing ring 8 meet the medium requirements and thoroughly cleans all components with a cleaning agent to remove oil and impurities. Then, after the second sealing ring 8 is fitted onto the surface of the stationary ring 7, the stationary ring 7 is installed inside the sealing cavity of the circulating pump, ensuring that the end face of the stationary ring 7 is perpendicular to the shaft centerline and that the second sealing ring 8 is in close contact with the inner wall of the sealing cavity. Then, the stationary ring 7 is limited and fixed by a relevant anti-rotation structure, such as an anti-rotation pin or a retaining ring, to prevent the stationary ring 7 from rotating with the shaft.

[0043] After completing the installation and fixing of the stationary ring 7, place the drive shaft ring 1 on the top of the workbench. Then, evenly apply grease to the surface of the first sealing ring 13 and install it between the thrust ring 4 and the moving ring 5. Next, place multiple first springs 11 in sequence inside the corresponding mounting holes 12, and fit the multiple protrusions 15 on the outer wall of the second rotating member 3 with the other ends of the multiple first springs 11. At this time, the second rotating member 3, the thrust ring 4, and the moving ring 5 are stacked on top of the drive shaft ring 1. Rotate multiple rotating frames 9 upwards in sequence, driving the corresponding moving frames 10 to rotate upwards to a vertical position. During the upward rotation of the rotating frames 9, the movement inside the moving frames 10 is controlled. After adjusting block 28 to ensure that the rotating frame 9 drives the moving frame 10 to rotate in a vertical position, the limiting block 36 on the moving block 28 smoothly enters the interior of the circular groove 6. Finally, tighten multiple first nuts 24 in sequence to limit and fix the rotating frame 9, and tighten multiple second nuts 30 to limit and fix the moving block 28 and the limiting block 36. At this time, multiple limiting mechanisms can smoothly limit and fix multiple parts on the top of the transmission shaft ring 1, completing the assembly of the entire moving ring 5 component. Finally, the moving ring 5 is fitted onto the shaft surface of the circulating pump, and the shaft sleeve is fixed by means of set screws or keys to prevent the moving ring 5 from moving axially. Manually rotate the shaft to check whether the sealing component is flexible and whether there is any jamming or abnormal friction noise.

[0044] Since the components of the rotating ring 5 are fixed by multiple limiting mechanisms, when the first spring 11 or other components need to be disassembled or replaced, it is only necessary to loosen the second nut 30 on the surface of the corresponding screw 29 in sequence, so that multiple moving blocks 28 are loosened in the corresponding first moving groove 26. Then, multiple first nuts 24 are tightened in sequence, and multiple rotating frames 9 are rotated to move the corresponding moving frame 10 and limiting block 36 and other components away from the rotating ring 5. This causes the limiting mechanism to release the limiting and fixing effect on the rotating ring 5 and other components. Manually, the transmission shaft ring 1, thrust ring 4 and rotating ring 5 can be disassembled and separated, and the first spring 11 and other components can be disassembled and replaced. This improves the efficiency of the entire rotating ring 5 component inspection and replacement and reduces the adverse effects on the use of the circulating pump.

[0045] like Figures 1-2As shown, after the dynamic ring 5 component is assembled, the limiting blocks 36 at one end of the multiple moving blocks 28 are inserted into the inside of the circular groove 6. If it is necessary to adjust the compression of the multiple first springs 11 to ensure that the sealing end face contact pressure between the dynamic ring 5 and the stationary ring 7 is in a suitable state, the limiting and fixing of the multiple moving blocks 28 can be released by loosening the multiple second nuts 30 in sequence. Since there are scale lines on the outer wall of the multiple moving frames 10, the multiple moving blocks 28 can be manually pushed to move the same distance in the corresponding first moving groove 26 towards the drive shaft ring 1, so that the compression of the multiple first springs 11 can be flexibly adjusted. After the position of the multiple moving blocks 28 is adjusted, the multiple second nuts 30 are tightened in sequence to achieve the adjustable effect of the mechanical seal component, ensuring that the dynamic ring 5 component can be flexibly adjusted during use and maintaining a good contact state between the dynamic ring 5 and the stationary ring 7.

[0046] If only the first sealing ring 13 needs to be replaced, after removing the moving ring 5 from the shaft surface, multiple drive ends 31 can be loosened manually in sequence to drive multiple lead screws 25 to rotate inside the corresponding rotating frame 9. This causes multiple moving frames 10 to move away from the transmission shaft ring 1 inside the corresponding rotating frame 9, which in turn pushes the moving ring 5 away from the thrust ring 4 until there is enough gap between the moving ring 5 and the thrust ring 4 to allow the first sealing ring 13 to be removed. At this point, multiple second springs 35 of the ejection mechanism can be used to elastically reset the mechanism, driving multiple top blocks 18 to push the first sealing ring 13 outward to the outside of the second groove 17. This facilitates the individual removal of the old first sealing ring 13 without disassembling other components, thus improving the removal efficiency of the first sealing ring 13.

[0047] Before installing the new first sealing ring 13, grease is usually applied to its surface. When manually installing the grease-coated first sealing ring 13 between the thrust ring 4 and the rotating ring 5, a small amount of grease may adhere to the operator's hands or tools, resulting in uneven grease application. This can lead to dry friction during subsequent use, increasing the coefficient of friction between the first sealing ring 13 and the contact surface. This prevents the sealing surfaces from fitting tightly, creating tiny gaps and causing leakage. To address this, after installing the new first sealing ring 13, two of the first nuts 24 can be loosened, and then two of the rotating brackets 9 can be controlled to move the corresponding moving bracket 10 away from the rotating ring 5. The direction is adjusted by rotating the two corresponding second nuts 30, so that the two moving blocks 28 move and adjust inside the corresponding first moving groove 26 to a position that matches the limiting groove 16 opened on the outside of the thrust ring 4. Then, the two rotating frames 9 are controlled to drive the corresponding moving frame 10 to rotate to a horizontal state, which in turn drives the limiting blocks 36 on the two moving blocks 28 to be inserted into the two limiting grooves 16. Then, the first rotating component 2 can be manually rotated so that the two limiting mechanisms can drive the thrust ring 4 to rotate synchronously, causing the inner wall of the first groove 14 to slowly rub against the first sealing ring 13, so that the grease on the surface of the first sealing ring 13 can be evenly applied, reducing the adverse effects on the use of the moving ring 5.

[0048] Since multiple movable frames 10 can be rotated by corresponding lead screws 25, allowing them to move and adjust within their respective rotating frames 9, before the entire mechanical seal assembly is assembled into the circulating pump, to facilitate its transport, two movable blocks 28 are moved to the end away from the rotating frame 9 within their respective first movable slots 26 and then fixed by corresponding second nuts 30. Next, the corresponding lead screws 25 are driven to rotate sequentially, causing the two movable frames 10 to extend to their maximum length within their respective rotating frames 9. After the stationary ring 7 and the rotating ring 5 are placed in contact, the two rotating frames 9 are controlled to rotate the extended movable frames 10 to a position close to the stationary ring 7. At this point, the limiting blocks 36 on the two movable blocks 28 abut against the outer wall of the stationary ring 7 near the rotating ring 5. Finally, by driving the two lead screws 25 to retract the two movable frames 10, the two limiting blocks 36 are simultaneously and tightly abut against the outer wall of the stationary ring 7, providing a tight clamping and fixing effect for the stationary ring 7, facilitating the simultaneous transport of the stationary ring 7 and the rotating ring 5.

[0049] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention 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 invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A novel adjustable waterless mechanical seal device for a desulfurization circulating pump, comprising a drive shaft ring (1), a dynamic ring (5), and a stationary ring (7), characterized in that, The moving ring (5) is located on one side of the transmission shaft ring (1). The moving ring (5) and the stationary ring (7) abut against each other. A first rotating member (2), a second rotating member (3) and a thrust ring (4) are arranged sequentially between the transmission shaft ring (1) and the moving ring (5). The outer wall of the first rotating member (2) is provided with multiple limiting mechanisms for assembling itself with the second rotating member (3), the thrust ring (4) and the moving ring (5). A first sealing ring (13) is provided between the thrust ring (4) and the moving ring (5). A second sealing ring (8) is fitted on the outer wall of the stationary ring (7). The interior of the moving ring (5) is provided with multiple ejection mechanisms for assisting the quick disassembly of the first sealing ring (13). The outer walls of the thrust ring (4) and the moving ring (5) that are close to each other are respectively provided with a first groove (14) and a second groove (17), and the first sealing ring (13) is installed inside the cavity enclosed by the first groove (14) and the second groove (17); The ejection mechanism includes multiple rectangular slots (34) opened on the outer wall of the moving ring (5) near the thrust ring (4). The multiple rectangular slots (34) are all connected to the second groove (17), and a top block (18) is installed inside the multiple rectangular slots (34). The multiple top blocks (18) are connected to the rectangular slots (34) by a second spring (35). The end of the multiple top blocks (18) away from the second spring (35) is adapted to the shape of the inner wall of the second groove (17). The limiting mechanism includes multiple rotating frames (9) rotatably mounted on the outer wall of the first rotating component (2). The outer wall of the rotating part at one end of the multiple rotating frames (9) is provided with a threaded part (23). The surface of the multiple threaded parts (23) is threaded with a first nut (24). The interior of the multiple rotating frames (9) is provided with a movable frame (10). The rotating frame (9) is internally mounted with a lead screw (25). The end of the lead screw (25) away from the rotating part is provided with a drive end (31). The moving frame (10) is threadedly engaged with the outer wall of the lead screw (25). Guide grooves (32) are provided on both inner walls of the rotating frame (9). Guide blocks (33) that are compatible with the limiting groove (16) are installed on both outer walls of the moving frame (10). The movable frame (10) has a first movable groove (26) inside, and a movable block (28) is installed inside the first movable groove (26). The movable frame (10) also has two second movable grooves (27) connected to the first movable groove (26) inside. One of the second movable grooves (27) is a through groove. A screw (29) is installed at one end of the movable block (28) near the through groove. A second nut (30) is threaded through the through groove and installed on the screw (29). The bottom end of the moving block (28) is equipped with a limiting block (36), the outer wall of the moving ring (5) is provided with a circular groove (6) that matches the limiting block (36), and the outer wall of the thrust ring (4) is provided with two limiting grooves (16) that match the limiting block (36).

2. The novel adjustable waterless mechanical seal device for a desulfurization circulating pump according to claim 1, characterized in that, The transmission shaft ring (1) has a first rotating groove (19) on the outer wall near the moving ring (5), and the first rotating part (2) has a first rotating part (20) at one end near the transmission shaft ring (1). The first rotating part (20) is rotatably connected to the first rotating groove (19).

3. The novel adjustable waterless mechanical seal device for a desulfurization circulating pump according to claim 1, characterized in that, The thrust ring (4) has a second rotating groove (22) on the side near the transmission shaft ring (1), and the second rotating part (3) has a second rotating part (21) at the end near the thrust ring (4), and the second rotating part (21) is rotatably connected to the second rotating groove (22).

4. The novel adjustable waterless mechanical seal device for a desulfurization circulating pump according to claim 1, characterized in that, The transmission shaft ring (1) has multiple mounting holes (12) on the outer wall near the first rotating member (2). Each mounting hole (12) contains a first spring (11). The second rotating member (3) has multiple cylindrical protrusions (15) on the outer wall near the transmission shaft ring (1). The ends of the multiple first springs (11) away from the mounting holes (12) are fitted onto the surface of the corresponding protrusions (15).

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