CN220396466U - Vertical mill grinding roller sealing mechanism - Google Patents
Vertical mill grinding roller sealing mechanism Download PDFInfo
- Publication number
- CN220396466U CN220396466U CN202321996266.7U CN202321996266U CN220396466U CN 220396466 U CN220396466 U CN 220396466U CN 202321996266 U CN202321996266 U CN 202321996266U CN 220396466 U CN220396466 U CN 220396466U
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- grinding roller
- connecting sleeve
- vertical mill
- sleeve
- connecting plate
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- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 23
- 238000012423 maintenance Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002452 interceptive effect Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model provides a vertical mill grinding roller sealing mechanism, which relates to the technical field of vertical mill sealing, wherein the vertical mill grinding roller sealing mechanism comprises a grinding roller body, a grinding roller door, a grinding roller shaft, a labyrinth sealing structure arranged at the inner side of the grinding roller door and a wave sealing structure arranged at the outer side of the grinding roller door; the wave-shaped sealing structure comprises a first connecting sleeve connected with the grinding roller door and a second connecting sleeve connected with the grinding roller body, and a soft connecting sleeve is arranged between the first connecting sleeve and the second connecting sleeve; the inner side of the soft connecting sleeve is sleeved with a metal woven net pipe. According to the utility model, the labyrinth sealing structure and the wave-shaped sealing structure are used for sealing the inner side and the outer side of the grinding roller door, so that the problems of air leakage, material leakage and the like caused by poor sealing effect of the vertical mill are effectively solved, and the reliability of the grinding roller is improved. Meanwhile, the metal woven mesh tube is arranged in the wave-shaped sealing structure, so that the abrasion of the flexible connecting sleeve can be effectively reduced under the condition of not interfering the normal operation, and the maintenance cost is saved.
Description
Technical Field
The utility model relates to the technical field of vertical mill sealing, in particular to a vertical mill grinding roller sealing mechanism.
Background
At present, the conventional single large shaking table seal or labyrinth seal is commonly adopted for the vertical mill grinding roller seal in the cement industry in China. The vertical mill operates at high temperature and negative pressure, the pressure difference between the inlet and the outlet of the vertical mill is about-6000 Pa, and in the operation process, air leakage is often caused at the sealing part of the grinding roller, so that the temperature of hot air in the mill can be reduced, heat loss is caused, and the air exhaust volume of the exhaust fan can be greatly increased, so that the heat consumption and the electricity consumption of the whole system are increased. And because the soft connecting piece is low in strength and easy to damage, the maintenance cost of the device is very high.
Disclosure of Invention
The utility model aims to provide a vertical mill grinding roller sealing mechanism, which aims to solve the problems of poor sealing effect and high maintenance cost of the existing grinding roller.
The utility model is realized in the following way: the vertical mill grinding roller sealing mechanism comprises a grinding roller body, a grinding roller door, a grinding roller shaft, a labyrinth sealing structure arranged at the inner side of the grinding roller door and a wave-shaped sealing structure arranged at the outer side of the grinding roller door;
the wave-shaped sealing structure comprises a first connecting sleeve connected with the grinding roller door and a second connecting sleeve connected with the grinding roller body, and a soft connecting sleeve is arranged between the first connecting sleeve and the second connecting sleeve;
the inner side of the soft connecting sleeve is sleeved with a metal woven net pipe.
Preferably, the first connecting sleeve is cylindrical, an annular first connecting plate is arranged at the outer end of the first connecting sleeve, a first fixing sleeve is arranged at one end of the soft connecting sleeve, and the first connecting plate is connected with the first fixing sleeve through a bolt.
Preferably, the second connecting sleeve is cylindrical, an annular second connecting plate is arranged at the outer end of the second connecting sleeve, a second fixing sleeve is arranged at the other end of the soft connecting sleeve, and the second connecting plate is connected with the second fixing sleeve through a bolt.
Preferably, the inner ring of the second connecting plate extends towards the inner side of the second connecting sleeve, a groove is arranged on the inner ring surface of the second connecting plate, and an expansion sealing ring is arranged in the groove.
Preferably, the metal woven mesh tube comprises a mesh tube body, and metal supporting rings are respectively arranged at two ends of the mesh tube body.
Preferably, the inner ring of the first connecting plate extends towards the inner side of the first connecting sleeve, annular grooves are symmetrically formed in the inner side surfaces of the first connecting plate and the second connecting plate, and the metal supporting ring is clamped in the annular grooves.
Preferably, the surfaces of the two annular grooves are covered with a first annular pressing plate and a second annular pressing plate respectively, and the metal supporting ring is clamped between the annular grooves and the annular pressing plates.
By adopting the technical scheme, the labyrinth seal structure and the wave-shaped seal structure are used for sealing the inner side and the outer side of the grinding roller door, so that the problems of air leakage, material leakage and the like caused by poor sealing effect of the vertical mill are effectively solved, and the reliability of the grinding roller is improved. Meanwhile, the metal woven mesh tube is arranged in the wave-shaped sealing structure, so that the abrasion of the flexible connecting sleeve can be effectively reduced under the condition of not interfering the normal operation, and the maintenance cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of portion A of FIG. 1;
fig. 3 is a schematic view of part B of fig. 1.
In the figure: 1-grinding roller body, 2-grinding roller door, 3-grinding roller shaft, 4-first connecting sleeve, 5-second connecting sleeve, 6-soft connecting sleeve, 7-first connecting plate, 8-first fixed sleeve, 9-second connecting plate, 10-second fixed sleeve, 11-groove, 12-expansion tight sealing ring, 13-network pipe body, 14-metal supporting ring, 15-annular groove, 16-first annular pressing plate and 17-second annular pressing plate.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-3, the utility model provides a vertical mill grinding roller sealing mechanism, which comprises a grinding roller machine body 1, a grinding roller door 2, a grinding roller shaft 3, a labyrinth sealing structure arranged on the inner side of the grinding roller door 2 and a wave sealing structure arranged on the outer side of the grinding roller door 2.
The labyrinth sealing structure is arranged on the inner side of the grinding roller door 2, can block materials and air flow in the grinding machine from flowing to the external space, and can reduce the wind speed.
The wave-type sealing structure comprises a first connecting sleeve 4 connected with a grinding roller door 2 and a second connecting sleeve 5 connected with a grinding roller machine body 1, wherein a soft connecting sleeve 6 is arranged between the first connecting sleeve 4 and the second connecting sleeve 5. Preferably, the first connecting sleeve 4 and the second connecting sleeve 5 are cylindrical, and the outer ends of the first connecting sleeve and the second connecting sleeve are fixedly connected with the grinding roller door and the grinding roller body respectively. A closed cavity is formed among the first connecting sleeve, the second connecting sleeve, the grinding roller door, the grinding roller body and the grinding roller shaft. The wavy flexible connecting sleeve is in a flexible connecting mode, the grinding roller shaft can move downwards, forwards, upwards and backwards, and air flow outside the grinding roller door is blocked from entering the grinder and external air is blocked from entering the grinding roller door.
Further, the first connecting sleeve 4 is cylindrical, an annular first connecting plate 7 is arranged at the outer end of the first connecting sleeve 4, a first fixing sleeve 8 is arranged at one end of the flexible connecting sleeve 6, and the first connecting plate 7 is connected with the first fixing sleeve 8 through bolts. The second connecting sleeve 5 is cylindrical, an annular second connecting plate 9 is arranged at the outer end of the second connecting sleeve 5, a second fixing sleeve 10 is arranged at the other end of the soft connecting sleeve 6, and the second connecting plate 9 is connected with the second fixing sleeve 10 through bolts.
Further, the inner ring of the second connecting plate 9 extends towards the inner side of the second connecting sleeve 5, a groove 11 is arranged on the inner ring surface of the second connecting plate 9, and an expansion sealing ring 12 is arranged in the groove 11. The inflatable sealing ring 12 can further block external air from entering the cavity.
The soft connecting structure used for sealing the existing grinding roller is single, after the grinding roller works for a long time, impurities such as fragments and the like are likely to be generated in the closed cavity, the impurities can be clamped and attached to the inner side of the soft connecting sleeve, the soft connecting sleeve is easy to damage through continuous friction, and the maintenance probability is increased. Therefore, the application is also sleeved with a metal woven mesh tube on the inner side of the soft connecting sleeve 6.
The metal woven mesh tube comprises a mesh tube body 13, wherein metal supporting rings 14 are respectively arranged at two ends of the mesh tube body 13. The inner ring of the first connecting plate 7 extends towards the inner side of the first connecting sleeve 4, annular grooves 15 are symmetrically arranged on the inner side surfaces of the first connecting plate 7 and the second connecting plate 9, and the metal supporting ring 14 is clamped in the annular grooves 15. Further, in order to improve connection stability, the surfaces of the two annular grooves 15 are respectively covered with a first annular pressing plate 16 and a second annular pressing plate 17, and the metal support ring 14 is clamped between the annular groove 15 and one annular pressing plate.
Because the metal woven mesh pipe main body is formed by the metal woven mesh, the metal woven mesh pipe main body has good flexibility, can stretch or swing along with the movement of the grinding roller, meanwhile, the woven mesh pipe structure can also play a role in filtering, materials which are leaked into the cavity carelessly are intercepted, the abrasion of the flexible connecting sleeve is reduced, and the service life of the device is prolonged.
According to the utility model, the labyrinth sealing structure and the wave-shaped sealing structure are used for sealing the inner side and the outer side of the grinding roller door, so that the problems of air leakage, material leakage and the like caused by poor sealing effect of the vertical mill are effectively solved, and the reliability of the grinding roller is improved. Meanwhile, the metal woven mesh tube is arranged in the wave-shaped sealing structure, so that the abrasion of the flexible connecting sleeve can be effectively reduced under the condition of not interfering the normal operation, and the maintenance cost is saved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (7)
1. The vertical mill grinding roller sealing mechanism is characterized by comprising a grinding roller machine body, a grinding roller door, a grinding roller shaft, a labyrinth sealing structure arranged at the inner side of the grinding roller door and a wave-shaped sealing structure arranged at the outer side of the grinding roller door;
the wave-shaped sealing structure comprises a first connecting sleeve connected with the grinding roller door and a second connecting sleeve connected with the grinding roller body, and a soft connecting sleeve is arranged between the first connecting sleeve and the second connecting sleeve;
the inner side of the soft connecting sleeve is sleeved with a metal woven net pipe.
2. The vertical mill grinding roller sealing mechanism according to claim 1, wherein the first connecting sleeve is cylindrical, an annular first connecting plate is arranged at the outer end of the first connecting sleeve, a first fixing sleeve is arranged at one end of the flexible connecting sleeve, and the first connecting plate is connected with the first fixing sleeve through bolts.
3. The vertical mill grinding roller sealing mechanism according to claim 2, wherein the second connecting sleeve is cylindrical, an annular second connecting plate is arranged at the outer end of the second connecting sleeve, a second fixing sleeve is arranged at the other end of the soft connecting sleeve, and the second connecting plate is connected with the second fixing sleeve through a bolt.
4. A vertical mill grinding roller sealing mechanism according to claim 3, wherein the inner ring of the second connecting plate extends towards the inner side of the second connecting sleeve, a groove is arranged on the inner ring surface of the second connecting plate, and an expansion sealing ring is arranged in the groove.
5. The seal mechanism of a grinding roller of a vertical mill of claim 4, wherein the metal woven mesh tube comprises a mesh tube body, and metal support rings are respectively arranged at two ends of the mesh tube body.
6. The vertical mill grinding roller sealing mechanism according to claim 5, wherein the inner ring of the first connecting plate extends towards the inner side of the first connecting sleeve, annular grooves are symmetrically formed in the inner side surfaces of the first connecting plate and the second connecting plate, and the metal supporting ring is clamped in the annular grooves.
7. The seal mechanism of a grinding roller of a vertical mill of claim 6, wherein a first annular pressing plate and a second annular pressing plate are respectively arranged on the surfaces of the two annular grooves in a covering mode, and the metal supporting ring is clamped between the annular grooves and the annular pressing plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321996266.7U CN220396466U (en) | 2023-07-27 | 2023-07-27 | Vertical mill grinding roller sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321996266.7U CN220396466U (en) | 2023-07-27 | 2023-07-27 | Vertical mill grinding roller sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220396466U true CN220396466U (en) | 2024-01-26 |
Family
ID=89599984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321996266.7U Active CN220396466U (en) | 2023-07-27 | 2023-07-27 | Vertical mill grinding roller sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220396466U (en) |
-
2023
- 2023-07-27 CN CN202321996266.7U patent/CN220396466U/en active Active
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