Polymerizing kettle stirring shaft sealing device
The protective mechanism for the mechanical seal of agitator shafts in polymerization reactors prevents impurity ingress, addressing the corrosion and maintenance challenges by enhancing stability and ease of assembly, thus extending the lifespan and reducing maintenance costs.
Patent Information
- Application Number
- CN202421898665.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The mechanical sealing device of existing polymer kettle stirring shafts accelerates the corrosion of bolts and nuts due to the accumulation of dust or impurities, shortens service life and increases maintenance difficulty and cost.
A sealing device including a protective cover and a dust cover is designed to prevent dust from entering through internal and external threaded connections, and to combine a fixing plate and a spring to improve connection stability and prevent impurities from accumulating.
Effectively prevent dust corrosion, extend the service life of the sealing device, and reduce maintenance difficulty and cost.
Smart Images
Figure CN223105022U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing devices, in particular to a sealing device for a stirring shaft of a polymerization kettle. Background Art
[0002] The mechanical seal of the existing stirring shaft of a polymerization kettle is a key sealing device, and its main purpose is to ensure the sealing performance between the stirring shaft and the polymerization kettle to prevent medium leakage.
[0003] The bottom of the mechanical seal is installed outside the base of the polymerization kettle through bolts. At the same time, the mechanical seal body also has bolts. Since the connection between the bolts and nuts is exposed to the outside, when dust or other impurities accumulate at the connection, substances will accelerate the corrosion process of the bolts and nuts, shortening their service life. At the same time, the accumulation of impurities may make it difficult to disassemble or fasten the bolts and nuts, increasing the difficulty and cost of maintenance. Content of the Utility Model
[0004] (I) Technical Problems to be Solved
[0005] Aiming at the deficiencies of the prior art, the utility model provides a sealing device for a stirring shaft of a polymerization kettle, which solves the technical problems that when dust or other impurities accumulate at the connection, substances will accelerate the corrosion process of the bolts and nuts, shortening their service life, and at the same time, the accumulation of impurities may make it difficult to disassemble or fasten the bolts and nuts, increasing the difficulty and cost of maintenance.
[0006] (II) Technical Solutions
[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:
[0008] A sealing device for a stirring shaft of a polymerization kettle, including a sealing device body, a protection mechanism is arranged outside the sealing device body, the protection mechanism includes a limit plate, a mounting plate, a protective cover, a dust cover, an internal thread and an external thread. The limit plate is fixedly installed outside the sealing device body, the mounting plate is movably connected outside the sealing device body, the limit plate is located on the lower surface of the mounting plate, the protective cover is clamped outside the mounting plate, the dust cover is rotatably connected outside the sealing device body, the internal thread is opened on the inner side of the dust cover, the external thread is opened at the bottom of the sealing device body, and the dust cover is threadedly connected to the outside of the external thread.
[0009] The outside of the protective cover is slidably connected to the fixed plate, the fixed plate is slidably connected to the outside of the mounting plate, a spring is fixedly connected to the outside of the protective cover, the fixed plate is fixedly connected to the outside of the spring, an internal groove is provided on the outside of the protective cover, an internal plate is slidably connected to the inside of the internal groove, the internal plate is fixedly connected to the outside of the fixed plate, an opening is provided on the outside of the protective cover, a protective plate is slidably connected to the inside of the opening, the protective plate is fixedly connected to the outside of the fixed plate, the protective plate is located above the spring, a plurality of grooves are provided on the upper surface of the dust cover, and two openings are provided on the outside of the dust cover.
[0010] Preferably: A through hole is provided on the outside of the mounting plate, and the mounting plate is slidably connected to the outside of the sealing device body through the through hole.
[0011] Preferably: A protective pad is fixedly connected to the inside of the through hole, and the protective pad is attached to the surface of the sealing device body.
[0012] (III) Beneficial effects
[0013] 1. By providing the protective cover and cooperating with the dust cover, after the sealing device is installed, rotate the dust cover at this time so that the internal thread on the inner side of the dust cover is connected to the external thread. At this time, the dust cover covers the bolts connecting the sealing device and the polymerization kettle, and then snap the protective cover onto the outside of the mounting plate. At this time, the protective cover covers the bolts connected to the sealing device body. The dust cover and the protective cover can effectively prevent external impurities such as dust from entering the connection, prevent substances from accelerating the corrosion process of bolts and nuts, extend their service life, and at the same time avoid the accumulation of impurities affecting the disassembly and assembly of bolts and nuts, thereby reducing the difficulty and cost of maintenance.
[0014] 2. By providing the fixed plate and cooperating with the spring, when the protective cover slides upward to be snap-connected to the mounting plate, pull the fixed plate at this time to press the spring. Then continue to slide the protective cover upward to snap the protective cover onto the outside of the mounting plate. At this time, release the fixed plate, and the fixed plate slides towards the mounting plate under the action of the spring. At this time, the fixed plate is snap-connected to the outside of the mounting plate. The connection between the protective cover and the mounting plate is made more stable through the fixed plate, thereby improving the protective effect of the protective cover. Description of the drawings
[0015] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following describes the preferred embodiments of the present invention in detail in conjunction with the drawings as follows.
[0016] Figure 1 is the structural diagram of the present invention;
[0017] Figure 2 is the present invention Figure 1 in the structural diagram of the protective cover;
[0018] Figure 3 For the dust cover of the present utility model Figure 1 Structural diagram
[0019] Figure 4 For the dust cover of the present utility model Figure 1 Cross-sectional structural diagram
[0020] Figure 5 For the enlarged structural diagram of A in the present utility model Figure 1 Structural diagram
[0021] Figure 6 For the enlarged structural diagram of B in the present utility model Figure 3 Structural diagram
[0022] Legend: 1. Sealing device body; 2. Limiting plate; 3. Mounting plate; 4. Protective cover; 5. Dust cover; 6. Internal thread; 7. External thread; 8. Fixed plate; 9. Spring; 10. Built-in groove; 11. Built-in plate; 12. Opening; 13. Protective plate; 14. Groove; 15. Opening; 16. Through hole; 17. Protective pad Specific implementation manners
[0023] By providing a stirring shaft sealing device for a polymerization kettle in an embodiment of the present application, the technical problem that when dust or other impurities accumulate at the connection, substances will accelerate the corrosion process of bolts and nuts, shortening their service life, and at the same time, the accumulation of impurities may cause the bolts and nuts to be difficult to disassemble or fasten, increasing the difficulty and cost of maintenance is effectively solved
[0024] Embodiment
[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 And Figure 6 , the technical solution in the embodiment of the present application is to effectively solve the technical problem that when dust or other impurities accumulate at the connection, substances will accelerate the corrosion process of bolts and nuts, shortening their service life, and at the same time, the accumulation of impurities may cause the bolts and nuts to be difficult to disassemble or fasten, increasing the difficulty and cost of maintenance. The general idea is as follows
[0026] In view of the problems existing in the prior art, the utility model provides a sealing device for a stirring shaft of a polymerization kettle. The sealing device for the stirring shaft of the polymerization kettle includes a sealing device body 1. A protection mechanism is arranged outside the sealing device body 1. The protection mechanism includes a limiting plate 2, a mounting plate 3, a protective cover 4, a dust-proof cover 5, an internal thread 6 and an external thread 7. The limiting plate 2 is fixedly installed outside the sealing device body 1. The mounting plate 3 is movably connected to the outside of the sealing device body 1. The limiting plate 2 is located on the lower surface of the mounting plate 3. The protective cover 4 is clamped outside the mounting plate 3. The dust-proof cover 5 is rotatably connected to the outside of the sealing device body 1. The internal thread 6 is opened on the inner side of the dust-proof cover 5. The external thread 7 is opened at the bottom of the sealing device body 1. The dust-proof cover 5 is threadedly connected to the outside of the external thread 7. By providing the protective cover 4 and cooperating with the dust-proof cover 5, after the sealing device is installed, the dust-proof cover 5 is rotated at this time so that the internal thread 6 on the inner side of the dust-proof cover 5 is connected to the external thread 7. At this time, the dust-proof cover 5 covers the bolts connecting the sealing device and the polymerization kettle. Then, the protective cover 4 is clamped outside the mounting plate 3. At this time, the protective cover 4 covers the bolts connected to the sealing device body 1. The dust-proof cover 5 and the protective cover 4 can effectively prevent external impurities such as dust from entering the connection part, prevent substances from accelerating the corrosion process of bolts and nuts, extend their service life, and at the same time avoid the accumulation of impurities affecting the disassembly and assembly of bolts and nuts, thereby reducing the difficulty and cost of maintenance.
[0027] The outside of the protective cover 4 is slidably connected to a fixing plate 8. The fixing plate 8 is slidably connected to the outside of the mounting plate 3. A spring 9 is fixedly connected to the outside of the protective cover 4. The fixing plate 8 is fixedly connected to the outside of the spring 9. An internal groove 10 is opened on the outside of the protective cover 4. An internal plate 11 is slidably connected inside the internal groove 10. The internal plate 11 is fixedly connected to the outside of the fixing plate 8 to prevent the connection between the fixing plate 8 and the protective cover 4 from being released. An opening 12 is opened on the outside of the protective cover 4. A protective plate 13 is slidably connected inside the opening 12. The protective plate 13 is fixedly connected to the outside of the fixing plate 8. The protective plate 13 is located above the spring 9 to protect the spring 9. By providing the fixing plate 8 and cooperating with the spring 9, when the protective cover 4 slides upward to be clamped with the mounting plate 3, the fixing plate 8 is pulled at this time so that the fixing plate 8 presses the spring 9. At this time, the protective cover 4 is continuously slid upward so that the protective cover 4 is clamped outside the mounting plate 3. At this time, the fixing plate 8 is released. The fixing plate 8 slides towards the mounting plate 3 under the action of the spring 9. At this time, the fixing plate 8 is clamped outside the mounting plate 3. The connection between the protective cover 4 and the mounting plate 3 is made more stable through the fixing plate 8, thereby improving the protection effect of the protective cover 4.
[0028] A plurality of grooves 14 are opened on the upper surface of the dust-proof cover 5. Two openings 15 are opened on the outside of the dust-proof cover 5. The grooves 14 facilitate the staff to insert tools into the inside of the grooves 14 for rotation. The openings 15 prevent the upper part of the device from affecting the sliding of the dust-proof cover 5.
[0029] A through hole 16 is provided on the outside of the mounting disc 3. The mounting disc 3 is slidably connected to the outside of the sealing device body 1 through the through hole 16. A protective pad 17 is fixedly connected inside the through hole 16. The protective pad 17 is attached to the surface of the sealing device body 1. The through hole 16 facilitates the sliding of the mounting disc 3, and the protective pad 17 prevents the mounting disc 3 from rubbing the surface of the sealing device body 1.
[0030] Working principle:
[0031] In the first step, by setting the protective cover 4 and cooperating with the dust-proof cover 5, after the sealing device is installed, at this time, rotate the dust-proof cover 5 so that the internal thread 6 on the inner side of the dust-proof cover 5 is connected to the external thread 7. At this time, the dust-proof cover 5 covers the bolts connecting the sealing device and the polymerization kettle.
[0032] In the second step, by setting the fixing plate 8 and cooperating with the spring 9, when the protective cover 4 slides upward and is clamped with the mounting disc 3, at this time, pull the fixing plate 8 to press the spring 9. Then continue to slide the protective cover 4 upward so that the protective cover 4 is clamped outside the mounting disc 3. At this time, release the fixing plate 8, and the fixing plate 8 slides toward the mounting disc 3 under the action of the spring 9. At this time, the fixing plate 8 is clamped outside the mounting disc 3. The connection between the protective cover 4 and the mounting disc 3 is made more stable through the fixing plate 8, thereby improving the protection effect of the protective cover 4.
[0033] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.
Claims
1. A stirring shaft sealing device for a polymerization kettle, comprising a sealing device body (1), characterized in that, A protection mechanism is arranged outside the sealing device body (1); The protection mechanism includes a limit plate (2), a mounting disc (3), a protective cover (4), a dust cover (5), an internal thread (6), and an external thread (7); The limit plate (2) is fixedly installed outside the sealing device body (1), the mounting disc (3) is movably connected to the outside of the sealing device body (1), the limit plate (2) is located on the lower surface of the mounting disc (3), the protective cover (4) is snap-connected to the outside of the mounting disc (3), the dust cover (5) is rotatably connected to the outside of the sealing device body (1), the internal thread (6) is provided on the inner side of the dust cover (5), the external thread (7) is provided at the bottom of the sealing device body (1), and the dust cover (5) is threadedly connected to the outside of the external thread (7).
2. The stirring shaft sealing device of a polymerization kettle according to claim 1, characterized in that: The outside of the protective cover (4) is slidably connected to a fixing plate (8); Wherein, the fixing plate (8) is slidably connected to the outside of the mounting disc (3).
3. The stirring shaft sealing device of a polymerization kettle according to claim 1, characterized in that: A spring (9) is fixedly connected to the outside of the protective cover (4); Wherein, the fixing plate (8) is fixedly connected to the outside of the spring (9).
4. The stirring shaft sealing device of a polymerization kettle according to claim 1, wherein: An internal groove (10) is provided on the outside of the protective cover (4), and an internal plate (11) is slidably connected to the inside of the internal groove (10); Wherein, the internal plate (11) is fixedly connected to the outside of the fixing plate (8).
5. The stirring shaft sealing device of a polymerization kettle according to claim 1, characterized in that: An opening (12) is provided on the outside of the protective cover (4), and a protective plate (13) is slidably connected to the inside of the opening (12); Wherein, the protective plate (13) is fixedly connected to the outside of the fixing plate (8), and the protective plate (13) is located above the spring (9).
6. A stirring shaft sealing device for a polymerization kettle according to claim 1, characterized in that: A plurality of grooves (14) are provided on the upper surface of the dust cover (5); Wherein, two openings (15) are provided on the outside of the dust cover (5).
7. The stirring shaft sealing device of a polymerization kettle according to claim 1, characterized in that: A through hole (16) is provided on the outside of the mounting disc (3); Wherein, the mounting disc (3) is slidably connected to the outside of the sealing device body (1) through the through hole (16).
8. The stirring shaft sealing device of a polymerization kettle according to claim 7, characterized in that: A protective pad (17) is fixedly connected to the inside of the through hole (16); Wherein, the protective pad (17) is in contact with the surface of the sealing device body (1).