Stirring shaft sealing structure

Abstract

The invention relates to the technical field of stirring shaft sealing structures, and discloses a stirring shaft sealing structure which comprises a stirring shaft, a supporting ring and an upper static ring, a bearing is arranged above the supporting ring and connected with the stirring shaft in a sleeved mode, an upper movable ring is arranged below the upper static ring, a sealing ring is arranged between the upper movable ring and the upper static ring, and a flange plate is arranged on the outer side of the stirring shaft. A bottom ring is arranged on the flange plate through a sealing ring, a lower static ring is arranged on the inner side of the bottom ring through a sealing ring, a lower moving ring is arranged on the outer side of the stirring shaft, and a dynamic sealing part is arranged on the outer side of the stirring shaft. The supporting and fixing parts are uniformly arranged on the flange plate; the scraping part penetrates through the flange plate; according to the device, the electric rod can be adjusted in a lifting mode, installation and position adjustment of the driving part are facilitated, the steel wire rope, the hanging ring and the pull ring which are arranged in the jacking shaft part are cooperatively driven and matched, jacking and pulling disassembly of the bearing is achieved, the disassembly speed of the bearing is increased, and therefore the maintenance efficiency of the sealing structure is improved.

Description

Technical Field

[0001] This invention relates to the field of stirring shaft sealing structure technology, and specifically to a stirring shaft sealing structure. Background Technology

[0002] The stirring shaft is an essential component of the driving mechanism for stirring materials or liquids. However, in order to prevent materials or liquids from leaking from the connection between the stirring shaft and the container during the stirring process, an upper stationary ring, a lower stationary ring, an upper moving ring, a lower moving ring, a sealing ring, a support ring, and a bottom ring are usually used to achieve the sealing effect of the stirring shaft, thereby preventing leakage at the connection between the stirring shaft and the container. However, there are still problems that need to be solved in the traditional sealing structure.

[0003] For example, after long-term use, the sealing structure needs to be disassembled and maintained regularly. This usually requires the use of specialized tools, such as a three-jaw puller, to manually disassemble the bearings inside the sealing structure, which is tedious, time-consuming and labor-intensive. Summary of the Invention

[0004] This invention provides a sealing structure for a stirring shaft to solve the problem of low efficiency in bearing disassembly and maintenance during the maintenance of the stirring shaft.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: In a first aspect, a stirring shaft sealing structure includes a stirring shaft, a support ring, and an upper stationary ring disposed between the support ring and the stirring shaft. A sealing ring is fitted between the upper stationary ring and the support ring. A bearing is disposed above the support ring and sleeved on the stirring shaft. An upper moving ring is disposed below the upper stationary ring and located outside the stirring shaft. A sealing ring is disposed between the upper moving ring and the upper stationary ring. A flange is disposed on the outer side of the stirring shaft. A bottom ring is disposed on the flange via the sealing ring. A lower stationary ring is disposed inside the bottom ring via the sealing ring, and the upper end of the lower stationary ring extends above the bottom ring and is fitted onto the outer side of the stirring shaft. A lower moving ring is disposed on the outer side of the stirring shaft and located above the lower stationary ring. The structure further includes: The dynamic sealing part is located on the outside of the stirring shaft and fits against the lower moving ring. The dynamic sealing part includes a bushing sleeve fitted on the outside of the stirring shaft, and the bushing sleeve and the stirring shaft are sealed together by a sealing ring. Two push rings are symmetrically arranged on the outside of the bushing sleeve, and a plurality of first springs are evenly arranged between the two push rings. There is a gap between the upper end of the bushing sleeve and the upper inner wall of the upper moving ring so that the stirring shaft remains sealed during rotation.

[0006] The support components are evenly distributed on the flange to provide a flexible fixing position for the drive components of the stirring shaft; The scraping part is provided through the flange and connected to the support part. The scraping part includes a scraping member evenly distributed at the lower end of the flange and an adjusting member that is movably provided through the upper end of the flange. The adjusting member is connected to the support part and the scraping member to cooperate with the support part to scrape off the material on the outside of the rotating stirring shaft. The top shaft is provided on the adjusting member and the support member. The top shaft includes a connecting member connected to the adjusting member and a pulling member connected to the support member. The pulling member cooperates with the connecting member to cooperate with the support ring to pull and disassemble the bearing.

[0007] Furthermore, the dynamic sealing part also includes: The sheath is located on the outside of the upper and lower moving rings, and on the outside of the push ring, and is connected to the bushing through a fixing component; There are annular gaps between the bushing, the upper moving ring and the push ring, and between the bushing, the lower moving ring and the push ring. A sealing ring is provided on the inner side of the annular gap.

[0008] Furthermore, the support includes a connecting member and a support member. The connecting member is disposed on the flange, and the support member is connected to the connecting member. The connecting member includes: The electric poles are evenly fixed on the flange. Support plate, fixed to the telescopic end of the electric pole; The connecting plate is fixed to the support plate by a fixing component.

[0009] Furthermore, the support component includes: The support rod is fixed to the connecting plate; Fixed plate, fixed to the upper end of the support rod; The solid plate has multiple mounting holes running through its interior.

[0010] Furthermore, the scraping component includes: Grooves are evenly spaced at the lower end of the flange; The sealing plug is embedded in the upper top wall of the groove and fits snugly against the flange; Scrape the parts and store them in the groove.

[0011] Furthermore, the scraping component includes: A hollow plate is fixed to the lower end of the sealing plug and located in the groove, with one end open; The second spring is movably disposed inside the hollow plate, with one end fixedly connected to the inner wall of the hollow plate; The scraper is fixed to the other end of the second spring and passes through one end opening of the hollow plate.

[0012] Furthermore, the adjusting member includes: A perforation is made, penetrating the upper end of the flange and located above the sealing plug; The guide rod has a movable through-hole design, with one end connected to the sealing plug and the other end connected to the fixed plate; The pull-out parts are set through the guide rod and connected to the hollow plate.

[0013] Furthermore, the retractable component includes: The channel is located at the lower end of the guide rod and extends through the outer side of the guide rod; The pull rope has one end passing through the second spring and connected to the scraper, and the other end moving through the hollow plate, sealing plug and channel setting; The I-beam is threaded onto the outside of the guide rod; The other end of the pull rope is wound around the outside of the I-beam.

[0014] Furthermore, the connecting component includes: The steel wire rope is connected at one end to the I-beam reel; The hanging ring is fixed to the other end of the wire rope; Hanging holes are symmetrically arranged through the hanging rings.

[0015] Furthermore, the pull connector includes: The pull ring is fixed to the outside of the support ring and located above the I-beam plate; The guide rod moves through the pull ring; Support plate, fixed to the outside of the support plate; Hanging rods are symmetrically fixed on the support plate and also fixed to the support plate.

[0016] The above-described solution of the present invention has at least the following beneficial effects: With a support section and a top shaft section, the electric rod can be raised and lowered for easy installation and position adjustment of the drive components. It works in conjunction with the support section to drive the bearing, and with the steel wire rope, hanging ring and pull ring linkage structure set in the top shaft section, the bearing can be pulled and disassembled without the need for a three-jaw puller and manual drive. This increases the disassembly speed of the bearing, thereby improving the maintenance efficiency of the sealing structure and simplifying maintenance operations. Attached Figure Description

[0017] Figure 1 This is an overall perspective view of the stirring shaft sealing structure provided in an embodiment of the present invention; Figure 2 A perspective view of the assembly of the sheath, stirring shaft, end cap and flange provided in an embodiment of the present invention; Figure 3 A perspective view of the push ring, first spring, stirring shaft and flange assembly provided in an embodiment of the present invention; Figure 4 This is a cross-sectional plan view of the stirring shaft sealing structure provided in an embodiment of the present invention; Figure 5A perspective view of the hollow plate, I-beam plate, and guide rod assembly provided in an embodiment of the present invention; Figure 6 A perspective view of the I-shaped plate and hanging ring assembly provided in an embodiment of the present invention; Figure 7 A perspective view of the hollow slab and hanging plate assembly provided in an embodiment of the present invention; Figure 8 Exploded perspective view of the connecting plate and the support plate provided in an embodiment of the present invention; Figure 9 Provided for embodiments of the present invention Figure 4 Schematic diagram of the structure at point A in the diagram; Figure 10 Provided for embodiments of the present invention Figure 4 The structural diagram at point B in the diagram.

[0018] Explanation of reference numerals in the attached figures: In the diagram: 1. Stirring shaft; 2. Bearing; 3. Collar; 4. End cap; 5. Support ring; 6. Bolt; 7. Upper stationary ring; 8. Upper moving ring; 9. Push ring; 10. First spring; 11. Sheath; 12. Lower moving ring; 13. Support cylinder; 14. Bottom ring; 15. Flange; 16. Lower stationary ring; 17. Electric rod; 18. Support plate; 19. Connecting plate; 20. Support rod; 21. Fixed plate; 22. Pull ring; 23. Through hole; 24. Guide rod; 25. Groove; 26. Sealing plug; 27. Hollow plate; 28. Second spring; 29. ​​Scraper; 30. Perforation; 31. Channel; 32. Pull rope; 33. Threaded groove; 34. I-beam; 35. Wire rope; 36. Hanging ring; 37. Hanging hole; 38. Support plate; 39. Hanging rod; 40. Shaft sleeve. Detailed Implementation

[0019] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0020] like Figures 1 to 10As shown, an embodiment of the present invention provides a stirring shaft sealing structure, including a stirring shaft 1, a support ring 5, and an upper stationary ring 7 disposed between the support ring 5 and the stirring shaft 1. A sealing ring is fitted between the upper stationary ring 7 and the support ring 5. A bearing 2 is disposed above the support ring 5 and sleeved with the stirring shaft 1. An upper moving ring 8 is disposed below the upper stationary ring 7 and located outside the stirring shaft 1. A sealing ring is disposed between the upper moving ring 8 and the upper stationary ring 7. A flange 15 is disposed on the outside of the stirring shaft 1. A bottom ring 14 is disposed on the flange 15 through the sealing ring. A lower stationary ring 16 is disposed inside the bottom ring 14 through the sealing ring, and the upper end of the lower stationary ring 16 extends above the bottom ring 14 and is fitted onto the outside of the stirring shaft 1. A lower moving ring 12 is disposed on the outside of the stirring shaft 1 and is located above the lower stationary ring 16. The structure also includes: The dynamic sealing part is located on the outside of the stirring shaft 1 and fits against the lower moving ring 12. The dynamic sealing part includes a bushing 40 sleeved on the outside of the stirring shaft 1, and the bushing 40 and the stirring shaft 1 are sealed together by a sealing ring. Two push rings 9 are symmetrically arranged on the outside of the bushing 40, and a plurality of first springs 10 are evenly arranged between the two push rings 9. There is a gap between the upper end of the bushing 40 and the upper inner wall of the upper moving ring 8 so that the stirring shaft 1 remains sealed during rotation.

[0021] The support parts are evenly distributed on the flange 15 to provide a flexible fixing position for the drive component of the stirring shaft 1; The scraping part is provided through the flange 15 and connected to the support part. The scraping part includes a scraping member evenly distributed at the lower end of the flange 15 and an adjusting member that is movably provided through the upper end of the flange 15. The adjusting member is connected to the support part and the scraping member to cooperate with the support part to scrape off the material on the outside of the rotating stirring shaft 1. The top shaft is provided on the adjusting member and the support member. The top shaft includes a connecting member connected to the adjusting member and a pulling member connected to the support member. The pulling member cooperates with the connecting member to cooperate with the support ring 5 to pull and disassemble the bearing 2.

[0022] Specifically, a support cylinder 13 is connected between the support ring 5 and the bottom ring 14 via a sealing ring, and the support cylinder 13 is located outside the sheath 11, the upper stationary ring 7, and the lower stationary ring 16. A collar 3 is provided on the outside of the bearing 2, and an end cap 4 is connected to the collar 3 via a fixing component and is located above the bearing 2. Bolts 6 are provided through the collar 3 and the support ring 5, and the bolts 6 are threadedly connected to the collar 3, the support ring 5, and the support cylinder 13.

[0023] In practical application, the operator can connect the lower end of the stirring shaft 1 to the stirring mechanism, and then use fixing components to fix the flange 15 in the working position. This allows the flange 15 to provide stable support for the bottom ring 14, which in turn provides support for the support cylinder 13, which in turn provides support for the support ring 5. The support ring 5 provides support for the collar 3, which in turn provides support for the end cap 4. Furthermore, the stirring shaft 1 provides support for the bearing 2, which in turn provides support for the collar 3. The collar 3 provides protection for the bearing 2. The stirring shaft 1 can rotate around the bearing 2 with the support of the collar 3 using rotational power. The upper stationary ring 7 can cooperate with the sealing ring to achieve a static seal under the support of the support ring 5. The stirring shaft 1 can drive the upper moving ring 8 and the lower moving ring 12 to rotate together. The upper moving ring 8 and the lower moving ring 12 can achieve a dynamic seal. The lower stationary ring 16 can cooperate with the bottom ring 14 through the sealing ring to achieve a static seal. Thus, the upper stationary ring 7, the lower stationary ring 16, the upper moving ring 8, and the lower moving ring 12 cooperate with the sealing ring to achieve a sealing effect, preventing material or liquid from leaking through the flange 15.

[0024] In a preferred embodiment of the present invention, the movable joint further includes: The sheath 11 is located outside the upper moving ring 8 and the lower moving ring 12, and outside the push ring 9, and is connected to the bushing 40 through a fixing component; There are annular gaps between bushing 40, upper moving ring 8 and push ring 9 and between bushing 40, lower moving ring 12 and push ring 9; A sealing ring is provided on the inner side of the annular gap.

[0025] Specifically, the bushing 40 can cooperate with the sealing ring on its inner side to provide a sealing function on the outer side of the stirring shaft 1, and can rotate and move with the stirring shaft 1. It can also provide a space for the push ring 9 to be fitted. The sheath 11 can provide protection for the push ring 9, the upper moving ring 8 and the lower moving ring 12, so that the upper moving ring 8, the lower moving ring 12, the push ring 9, the first spring 10 and the bushing 40 can rotate with the stirring shaft 1 and provide a seal. The upper stationary ring 7 can provide a blocking and limiting function for the upper moving ring 8, and the lower stationary ring 16 can provide a blocking and limiting function for the lower moving ring 12. The inner side of the flange 15 extends upward along the stirring shaft 1 to the inner side of the lower stationary ring 16.

[0026] In practical application, the push ring 9 and the first spring 10 work together to provide an initial force to the push ring, upper moving ring, and lower moving ring using the elasticity of the first spring 10, so that the mechanical seal sealing surfaces fit together and seal. When the stirring shaft 1 rotates, the stirring shaft 1 will drive the inner ring of the bearing 2 to rotate together under the support of the flange 15, bottom ring 14, support cylinder 13, support ring 5, and collar 3. At the same time, the stirring shaft 1 will drive the bushing 40 and the sealing ring provided on its inner side to rotate together. The bushing 40 will drive the push ring 9 to rotate together using friction. The push ring 9 will drive the upper moving ring 8, lower moving ring 12, and sheath 11 to rotate together using rotational power, and maintain a sealing effect with the sealing ring, upper stationary ring 7, and lower stationary ring 16 during the rotation.

[0027] In a preferred embodiment of the present invention, the support includes a connecting member and a support member. The connecting member is disposed on the flange 15, and the support member is connected to the connecting member. The connecting member includes: The electric pole 17 is evenly fixed on the flange 15; Support plate 18 is fixed to the telescopic end of electric pole 17; The connecting plate 19 is fixed to the support plate 18 by a fixing component.

[0028] Specifically, flange 15 provides stable support for electric pole 17, which can extend and retract under the control of the operator, and can provide stable support for support plate 18 through the extension end. Support plate 18 can cooperate with fixed components to provide support for connecting plate 19.

[0029] Support components include: Support rod 20 is fixed on connecting plate 19; Fixed plate 21, fixed to the upper end of support rod 20; The solid plate 21 has multiple mounting holes that extend through its interior.

[0030] Specifically, the connecting plate 19 can provide stable support for the support rod 20, the support rod 20 can provide support for the fixed plate 21, the fixed plate 21 can provide space for the mounting hole, and the mounting space can provide a through channel for the fixed component.

[0031] In practical application, after fixing the flange 15 in the working position, the operator can control the extension and retraction of the electric rod 17 according to the actual needs. The extension and retraction end of the electric rod 17 drives the fixed plate 21 to move up and down together through the support plate 18, connecting plate 19 and support rod 20 to adjust to a suitable height. This allows the drive component of the stirring shaft 1 to be supported and placed above the fixed plate 21. At the same time, the position of the drive component is finely adjusted under the support of the fixed plate 21 so that the output end of the drive component is connected to the upper end of the stirring shaft 1. Then, the drive component is fixed to the fixed plate 21 using the fixing component, so that the fixed plate 21 can stably support the drive component and drive the stirring shaft 1 to rotate. This makes the work of fixing the drive component more flexible and convenient.

[0032] In a preferred embodiment of the present invention, the scraper includes: Grooves 25 are evenly distributed at the lower end of flange 15; The sealing plug 26 is embedded in the upper top wall of the groove 25 and fits against the flange 15; The scraped parts are stored in the groove 25.

[0033] Specifically, the flange 15 provides space for the groove 25, which provides storage space for the hollow plate 27 and the scraper 29, and provides space for the hollow plate 27, the scraper 29 and the sealing plug 26 to move. The sealing plug 26 fits with the flange 15 to provide a sealing function, and can provide support for the hollow plate 27 and the guide rod 24 by using the friction with the flange 15.

[0034] The scraping parts include: Hollow plate 27 is fixed to the lower end of sealing plug 26 and located in groove 25, with one end open; The second spring 28 is movably disposed inside the hollow plate 27, with one end fixedly connected to the inner wall of the hollow plate 27; The scraper 29 is fixed to the other end of the second spring 28 and passes through one end opening of the hollow plate 27.

[0035] Specifically, the hollow plate 27 can provide support and movement space for the second spring 28, and can provide storage space and extension channel for the scraper 29. The scraper 29 has an inclined angle at one end away from the second spring 28, and has an arc at the bottom of one end.

[0036] Adjustable pull parts include: A perforation 30 is made through the upper end of the flange 15 and is located above the sealing plug 26; The guide rod 24 has a movable through hole 30, one end of which is connected to the sealing plug 26 and the other end is connected to the fixed plate 21; The pull-out part is set through the guide rod 24 and connected to the hollow plate 27.

[0037] Specifically, the flange 15 provides space for the perforation 30, and the perforation 30 and the groove 25 cooperate to provide a channel for the guide rod 24 to pass through the flange 15. The guide rod 24 can push and pull the sealing plug 26 and the hollow plate 27 to move up and down under the action of external force.

[0038] The retractable parts include: The channel 31 is opened at the lower end of the guide rod 24 and extends through the outer side of the guide rod 24; The pull rope 32 has one end passing through the second spring 28 and connected to the scraper 29, and the other end movably passing through the hollow plate 27, the sealing plug 26 and the channel 31. The I-beam disc 34 is threaded onto the outside of the guide rod 24; The other end of the pull rope 32 is wound around the outside of the I-beam coil 34.

[0039] Specifically, the guide rod 24 has a threaded groove 33 on its outer side, which is threadedly connected to the inner side of the I-beam disc 34. The guide rod 24 provides space for the opening of the channel 31, and the channel 31 provides a through-movement channel for the pull rope 32. Under the action of external force, the pull rope 32 can pull the scraper 29 into the hollow plate 27 along the channel 31, guided by the resistance of the hollow plate 27. The scraper 29 and the hollow plate 27 cooperate to compress the spring and store energy using external force. Figure 10 As shown, the second spring 28 is in a compressed state. When the external force on the second spring 28 disappears, it will use the rebound force to push the scraper 29 outward to the hollow plate 27, and make the end of the scraper 29 away from the second spring 28 contact the outer wall of the stirring shaft 1. The I-beam disc 34 can provide winding space for the pull rope 32, and can use the thread action with the guide rod 24 to provide positioning for the pull rope 32. The end of the scraper 29 away from the second spring 28 is relatively sharp.

[0040] In practical application, during the stirring process, some splashed material may adhere to the outer side of the lower end of the stirring shaft 1. Prolonged accumulation can cause contamination or even damage. After stirring is complete, the operator can rotate the I-beam disc 34 as needed. The I-beam disc 34, utilizing the threaded action with the threaded groove 33, rotates counterclockwise around the guide rod 24 to release the wound pull rope 32 and separate it from the threaded groove 33. As the pull rope 32 is released, the tension on the second spring 28 disappears, allowing the second spring 28 to use its rebound force to push the scraper 29 closer to the stirring shaft 1 under the support of the hollow plate 27, and make contact with the stirring shaft 1. Then, the operator needs to release the fixing plate 21 from the drive component and control the telescopic end of the electric rod 17 to slowly descend and retract, extending and returning to its original position after reaching its limit. Simultaneously, the operator needs to manually rotate the stirring shaft 1. During the descent and retraction of the telescopic end of the electric rod 17, it will pass through the support plate 18. The connecting plate 19 and the support rod 20 move the fixed plate 21 downward together, so that the fixed plate 21 can push the guide rod 24 downward. The guide rod 24 can use external force to push the sealing plug 26 downward through the perforation 30. The sealing plug 26 can drive the hollow plate 27, the spring and the scraper 29 to move downward together. At the same time, the I-shaped plate 34 and the pull rope 32 will follow the guide rod 24 downward under the action of gravity. During the downward movement, the scraper 29 will cooperate with the rotation of the stirring shaft 1 and use its sharp end to scrape off the material adhering to the outside of the stirring shaft 1. At the same time, during the downward movement, the scraper 29 will be pushed by the contour of the stirring shaft 1 in accordance with its own curvature, moving towards the second spring 28 and compressing the second spring 28 to deform. At the same time, the second spring 28 will use its rebound force to continuously push the scraper 29 to fit against the stirring shaft 1, so that the scraper 29 can adapt to the outer contour of the stirring shaft 1 during the downward movement and continuously contact the stirring shaft 1 to scrape off the adhering material.

[0041] After the electric rod 17 retracts and extends, moves back and forth once and returns to its original position, the guide rod 24 will pull the sealing plug 26 upward together with the fixed plate 21 to return to its original position. The sealing plug 26 will then drive the hollow plate 27 to move into the groove 25 to return to its original position. After that, the operator can rotate the I-beam disc 34 clockwise so that the I-beam disc 34 is fully connected to the threaded groove 33 by the thread action. This allows the I-beam disc 34 to rotate and wind up the pull rope 32 and position it. During the winding process, the pull rope 32 will move along the channel 31 and pull the scraper 29 into the hollow plate 27. The scraper 29 can cooperate with the hollow plate 27 to compress the second spring 28 to store energy, so that the scraper 29 can be stored in the hollow plate 27 to return to its original position and prevent it from affecting the rotation of the stirring shaft 1. Then, the driving component and the fixed plate 21 can be fixedly connected by the fixing component.

[0042] As a preferred embodiment of the present invention, the connecting member includes: Wire rope 35, one end of which is connected to I-beam 34; The hanging ring 36 is fixed to the other end of the steel wire rope 35; Hanging hole 37, and hanging ring 36 are symmetrically arranged.

[0043] Specifically, the I-beam disc 34 provides stable support for the wire rope 35, the wire rope 35 provides connecting support for the hanging ring 36, and the hanging ring 36 provides space for the hanging hole 37.

[0044] The pull connector includes: Pull ring 22 is fixed to the outside of support ring 5 and located above I-beam plate 34; Guide rod 24 moves through pull ring 22; Support plate 38 is fixed to the outside of support plate 18; Hanging rod 39 is symmetrically fixed on support plate 18 and fixed on support plate 38.

[0045] Specifically, the support ring 5 provides stable support for the pull ring 22. The pull ring 22 has a through hole 23 inside, which provides a through channel for the guide rod 24. The support ring 5 can be pushed under the action of external force. The support plate 18 provides stable support for the support plate 38. The support plate 18 and the support plate 38 provide stable support for the hanging rod 39. The hanging hole 37 provides a through channel for the hanging rod 39, so that the hanging ring 36 can be connected to the support plate 18 and the support plate 38 through the hanging hole 37 and the hanging rod 39.

[0046] In practical application, when maintenance of the sealing structure is required, the operator needs to disassemble the bearing 2. First, the operator needs to remove the drive component connected to the fixed plate 21 and the stirring shaft 1. Then, the operator needs to disassemble the fixing components connecting the support plate 18 and the connecting plate 19, allowing them to separate. Simultaneously, the operator needs to disassemble the fixing components of the bolt 6 and the fixed end cover 4, and remove the end cover 4. Afterward, the operator controls the electric rod 17 to retract, allowing the electric rod 17 to use its telescopic end to move the support plate 18 and the support plate 38 downwards to a suitable position. At the same time, the operator needs to rotate the I-beam disc 34 counterclockwise to separate it from the threaded groove 33. Then, the operator needs to move the hanging ring 36, suspending it through the hanging hole 37 on the outside of the guide rod 39, ensuring that the hanging ring 36 is aligned with the support plate. The support plate 38 and the support plate 18 are attached together. Then, the electric rod 17 is extended, so that the electric rod 17 pushes the support plate 18 and the support plate 38 upward with the telescopic end. The support plate 18 and the support plate 38 drive the hanging rod 39 and the hanging ring 36 to move upward together. At the same time, the hanging ring 36 will be taut under the action of external force and move upward with the telescopic end of the electric rod 17 through the steel wire rope 35. It also pulls the I-beam plate 34 to move upward along the guide rod 24. During the movement, the I-beam plate 34 can contact the pull ring 22 and push the pull ring 22 upward. Under the action of external force, the pull ring 22 can drive the support ring 5 to move upward together. In turn, the support ring 5 can push the bearing 2 upward under the action of external force, so that the bearing 2 can move upward and separate from the stirring shaft 1. This provides convenience for the staff to remove the bearing 2 and saves manpower.

[0047] Working principle: A static seal is formed between the upper stationary ring 7 and the support ring 5, and between the lower stationary ring 16 and the bottom ring 14, through sealing rings. When the stirring shaft 1 rotates, it drives the shaft sleeve 40 and the push ring 9, upper moving ring 8, and lower moving ring 12 connected to it to rotate synchronously. The push rings 9 are provided with axial pressure through the first spring 10, so that the upper moving ring 8 and the upper stationary ring 7, and the lower moving ring 12 and the lower stationary ring 16 are tightly fitted to form a dynamic seal. The sheath 11 wraps around the moving ring and the push ring 9 to prevent external contamination from interfering with the sealing surface, and the sealing ring in the annular gap further blocks the leakage path. The support unit drives the support plate 18 to rise and fall through the electric rod 17 on the flange 15, which in turn drives the connecting plate 19 and the support rod 20 to adjust the height of the fixed plate 21. It can be adapted to different types of drive components. It can be quickly positioned through the mounting holes to achieve the centering and installation of the stirring shaft 1 and the drive device, thus improving adaptability. The scraper 29 is housed in the groove 25, and the I-beam disc 34 is screwed into the threaded groove 33 of the guide rod 24. The pull rope 32 is tightened to compress the second spring 28, and the scraper 29 retracts into the hollow plate 27. The I-beam disc 34 is rotated in the opposite direction to release the pull rope 32, and the second spring 28 pushes the scraper 29 to extend. The sharp end of the scraper 29 contacts the stirring shaft 1. The electric rod 17 descends, causing the fixed plate 21 to press down the guide rod 24. The guide rod 24 pushes the sealing plug 26 and the scraper 29 to move down. At the same time, the stirring shaft 1 is manually rotated to move the scraper 29 down along the shaft wall. The arc adapts to fit the shaft surface and scrapes off the sticky material. After the electric rod 17 is reset, the I-beam disc 34 is rotated in the clockwise direction to wind up the pull rope 32, and the scraper 29 retracts into the groove 25 to avoid interference with operation. During maintenance, after removing the drive unit and end cover 4, the reverse rotation of the I-beam disc 34 releases the threaded fixation. The hanging ring 36 is then attached to the hanging rod 39 of the support plate 18 through the hanging hole 37. The electric rod 17 is extended to push the support plate 18 upward. The hanging rod 39 pulls the wire rope 35 and the I-beam disc 34 upward, causing the I-beam disc 34 to lift the pull ring 22, which in turn drives the support ring 5 to push the bearing 2 away from the stirring shaft 1, thus achieving tool-free disassembly.

[0048] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A stir shaft seal structure, characterized by, The utility model provides a stirring shaft, a support ring and the upper static ring of setting between the support ring and the stirring shaft, and the upper static ring and the support ring between fit are provided with the sealing ring, the support ring top is provided with the bearing, the bearing and stirring shaft sleeve joint, the upper static ring below is provided with the upper dynamic ring, and is located the stirring shaft outside, the upper dynamic ring and the upper static ring between are provided with the sealing ring, the outside of stirring shaft is provided with the flange plate, the flange plate is provided with the bottom ring through the sealing ring, the bottom ring inboard is provided with the lower static ring through the sealing ring, and the upper end of lower static ring extends to the bottom ring above, and is sleeved in the stirring shaft outside, the stirring shaft outside is provided with the lower dynamic ring, and the lower dynamic ring is located the lower static ring upper end, still include: The dynamic seal part is arranged outside the stirring shaft and is in close contact with the lower dynamic ring, the dynamic seal part comprises a shaft sleeve arranged outside the stirring shaft, and the shaft sleeve and the stirring shaft are sealedly connected through a sealing ring, two push rings are symmetrically arranged outside the shaft sleeve, a plurality of first springs are uniformly arranged between the two push rings, and a gap is formed between the upper end of the shaft sleeve and the upper inner wall of the upper dynamic ring, so that the stirring shaft can be kept sealed during rotation; The supporting part is uniformly arranged on the flange plate to provide a flexible fixing position for the driving part of the stirring shaft; The scraping part is arranged through the flange plate and is connected with the supporting part, the scraping part comprises a scraping member uniformly arranged at the lower end of the flange plate and a pulling member movably arranged through the upper end of the flange plate, and the pulling member is connected with the supporting part and the scraping member to scrape the material on the outer side of the rotating stirring shaft in cooperation with the supporting part; The shaft top part is arranged on the pulling member and the supporting part, the shaft top part comprises a connecting member connected with the pulling member and a pulling connecting member connected with the supporting part, and the pulling connecting member cooperates with the connecting member to cooperate with the support ring to pull and disassemble the bearing.

2. The shaft seal structure according to claim 1, wherein The dynamic seal part further comprises: The sheath is arranged outside the upper dynamic ring and the lower dynamic ring, is located outside the push ring, and is connected with the shaft sleeve through a fixing member; There is an annular gap between the shaft sleeve, the upper dynamic ring and the push ring and between the shaft sleeve, the lower dynamic ring and the push ring; The annular gap is provided with a sealing ring inside.

3. The shaft seal structure according to claim 2, wherein The supporting part comprises a connecting and adjusting member and a supporting member, the connecting and adjusting member is arranged on the flange plate, and the supporting member is connected to the connecting and adjusting member, the connecting and adjusting member comprises: The electric rod is uniformly fixed on the flange plate; The support disc is fixed on the telescopic end of the electric rod; The connecting disc is fixed on the support disc through a fixing member.

4. The shaft seal construction of claim 3 wherein, The supporting member comprises: The supporting rod is fixed on the connecting disc; The fixed plate is fixed on the upper end of the supporting rod; A plurality of mounting holes are formed through the inside of the fixed plate.

5. The shaft seal construction of claim 4 wherein, The scraping member comprises: The grooves are uniformly formed at the lower end of the flange plate; The sealing plug is inlaid in the upper top wall of the groove and is in close contact with the flange plate; The scraping part is received in the groove.

6. The shaft seal construction of claim 5 wherein, The scraping part comprises: The hollow plate is fixed at the lower end of the sealing plug and is located in the groove, and one end is open; The second spring is movably arranged inside the hollow plate, and one end is fixedly connected with the inner wall of the hollow plate; The scraper is fixed to the other end of the second spring and penetrates the one end opening of the hollow plate.

7. A shaft seal structure according to claim 6, wherein The pulling member comprises: The through hole is formed through the upper end of the flange plate and is located above the sealing plug; A guide rod is movably arranged through a through hole, one end of which is connected with the sealing plug and the other end is connected with the fixed plate; A pulling and retracting part is arranged through the guide rod and connected with the hollow plate.

8. A shaft seal structure according to claim 7, wherein The pulling and retracting part comprises: A hole is arranged at the lower end of the guide rod and through the outer side of the guide rod; A pulling rope is connected with the scraper through the second spring at one end and movably arranged through the hollow plate, the sealing plug and the hole at the other end; A I-shaped disc is threadedly connected to the outer side of the guide rod; The other end of the pulling rope is wound around the outer side of the I-shaped disc.

9. A shaft seal structure according to claim 8, wherein The connecting part comprises: A steel wire rope is connected with the I-shaped disc at one end; A hanging ring is fixed to the other end of the steel wire rope; A hanging hole is symmetrically arranged through the hanging ring.

10. The shaft seal construction of claim 9 wherein, The pulling connecting part comprises: A pulling ring is fixed to the outer side of the supporting ring and above the I-shaped disc; The guide rod movably passes through the pulling ring; A supporting plate is fixed to the outer side of the supporting disc; A hanging rod is symmetrically fixed to the supporting disc and the supporting plate.

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