CN220018120U - Sealing structure for rotary kiln - Google Patents
Sealing structure for rotary kiln Download PDFInfo
- Publication number
- CN220018120U CN220018120U CN202321305783.5U CN202321305783U CN220018120U CN 220018120 U CN220018120 U CN 220018120U CN 202321305783 U CN202321305783 U CN 202321305783U CN 220018120 U CN220018120 U CN 220018120U
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- Prior art keywords
- packing
- sealing
- sealing structure
- ring
- rotary kiln
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- 238000007789 sealing Methods 0.000 title claims abstract description 135
- 238000012856 packing Methods 0.000 claims abstract description 59
- 238000007599 discharging Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 11
- 241000251468 Actinopterygii Species 0.000 description 10
- 239000000463 material Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model discloses a sealing structure for a rotary kiln, which comprises a cylinder body and an external device connected to the end part of the cylinder body, wherein a first packing is arranged on one side of the end part of the cylinder body, which is close to the atmosphere in the cylinder, and is positioned at the connecting position of the cylinder body and the external device, the first packing is fixed by using a pressing ring, and the first packing and the pressing ring form a first sealing structure; and a second sealing structure is arranged on one side of the first disc root close to the surrounding environment, a sealing cavity is formed between the first sealing structure and the second sealing structure, and the sealing cavity can be inflated and pressure maintained. The rotary kiln seals the cylinder body through the three sealing structures, so that the gas in the cylinder body can be prevented from leaking no matter the temperature is too high or the pressure is too high, and the sealing effect is improved.
Description
Technical Field
The utility model relates to the technical field of rotary kilns, in particular to a sealing structure for a rotary kiln.
Background
The lithium battery cathode material sintering rotary kiln is used for sintering materials at high temperature during working, and simultaneously releasing combustible harmful gases, and the rotary kiln is required to be driven into protective atmosphere to ensure the sealing of a furnace tube of the rotary kiln; the rotary kiln is sealed by sealing structures at two ends of the furnace tube, the furnace tube continuously rotates during operation, and the furnace tube thermally expands and stretches when the temperature rises, so that the requirement on the sealing structure of the rotary kiln is higher; the existing rotary kiln is usually sealed by adopting a labyrinth seal and a sealing ring, wherein the labyrinth seal is greatly influenced by radial and axial runout of a furnace tube, and is easy to fail and leak gas; the sealing performance of the sealing ring is reduced due to the fact that the sealing ring is affected by the pressure in the furnace, meanwhile, the sealing performance of the sealing ring is reduced due to the fact that the sealing ring is high in temperature and the pressure is too high, when the pressure in the furnace is too high, gas leakage is caused, environmental pollution is caused, and meanwhile, dust of materials in the furnace is blown out, and material loss is caused.
Disclosure of Invention
The utility model aims to provide a sealing structure for a rotary kiln, which seals a cylinder body through three sealing structures, can ensure that gas in the cylinder body cannot leak no matter the temperature is too high or the pressure is too high, and improves the sealing effect.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the sealing structure for the rotary kiln comprises a cylinder body and an external device connected to the end part of the cylinder body, wherein a first packing is arranged on one side, close to the atmosphere in the cylinder, of the end part of the cylinder body, the first packing is positioned at the connecting position of the cylinder body and the external device, the first packing is fixed by using a pressing ring, and the first packing and the pressing ring form a first sealing structure; the first disc root is provided with a second sealing structure at one side close to the surrounding environment, a sealing cavity is formed between the first sealing structure and the second sealing structure, and air inflation and pressure maintaining can be carried out in the sealing cavity.
Preferably, one end of the pressing ring is fixedly connected to the end of the cylinder body, the other end of the pressing ring abuts against the first packing, and the first packing is clamped between the cylinder body and the external device.
Preferably, the pressing ring is fixed on the inner side of the external device through a flange ring, the other end of the pressing ring abuts against the first packing, and the first packing is arranged on the inner side of the flange ring and is attached to the cylinder body.
Preferably, the second sealing structure comprises a second packing, a sealing ring mounting seat and a sealing ring pressing plate, wherein the sealing ring mounting seat is fixedly connected to an external device, one end of the sealing ring is fixedly installed on the sealing ring mounting seat, the other end of the sealing ring is fixedly connected with the sealing ring pressing plate, the second packing is arranged between the outer side of a port of the rotary furnace cylinder body and the sealing ring, and the sealing ring pressing plate is pressed on one side of the second packing.
Preferably, the second sealing structure comprises a plurality of fish plates, one ends of the fish plates are fixedly arranged on an external device, the other ends of the fish plates are tightly lapped on the cylinder body, and the fish plates are sequentially staggered, stacked and fixed.
Preferably, the sealing chamber is defined by a first packing, a second packing and a sealing ring.
Preferably, when the second sealing structure comprises a louver, the sealing chamber is defined by the first packing and the louver.
Preferably, the sealing ring is provided with an anti-skid block.
Preferably, the sealing ring and the sealing ring mounting seat are connected through socket head cap bolts.
Preferably, the external device is a stokehold collecting hopper or a discharging system.
In the technical scheme, the first packing is arranged at the connecting position of the cylinder body and the external device and is matched with the pressing ring to form a first sealing structure, the second packing is arranged at the outer side of the cylinder body and is matched with the sealing ring, the sealing ring mounting seat and the sealing ring pressing plate to form a second sealing structure, two-stage sealing is carried out at the end part of the cylinder body, if any sealing structure at the outer side or the inner side is damaged, gas leakage can not be caused, and the sealing effect of the connecting part is enhanced. A sealing cavity is formed between the first sealing structure and the second sealing structure, and the pressure in the sealing cavity is slightly higher than the pressure of the atmosphere in the cylinder to form a micro-positive pressure environment, so that the third sealing structure is formed, and the fact that the first disc root is pushed out or even is exploded due to the fact that the pressure in the cylinder is too high is avoided, and therefore harmful gas is sprayed out is avoided. The sealing ring presses the second packing on the cylinder or an external device, and the sealing ring is provided with an anti-sliding block, the anti-sliding block and the sealing ring pressing plate fix the second packing along the two ends of the length direction of the cylinder, and all the side faces of the second packing are fixed, so that the second packing is prevented from shifting due to pressure or temperature change. The cylinder body is sealed through the three sealing structures, so that the gas in the cylinder body can not be leaked no matter the temperature is too high or the pressure is too high, the sealing effect of the cylinder body is improved, and environmental pollution caused by gas leakage is avoided. The sealing structure has the advantages that the sealing structure can be used for selecting the fish scale plate to be of a second sealing structure according to the space size of the sealing position, one end of the fish scale plate is fixed at the outer end part of the external device, the other end of the fish scale plate is tightly lapped on the outer wall of the cylinder body, parts are reduced, the fish scale plate is used for sealing at the same time, the sealing structure is high-temperature resistant and wear-resistant, dust and wind are not afraid of, and the service life of the sealing structure is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of the utility model without flange ring;
FIG. 2 is a schematic cross-sectional view of the flange ring of the present utility model;
FIG. 3 is an enlarged schematic view of FIG. 1A;
FIG. 4 is an enlarged schematic view of B in FIG. 2;
FIG. 5 is a schematic view of a second seal of the present utility model as a panel;
FIG. 6 is a schematic view of another embodiment of the second seal of the present utility model.
In the figure, 1 barrel; 2 an external device; 21 stokehold collection hoppers; 22 a discharging system; 3, a first sealing structure; 31 first disc roots; 32 pressing rings; 33 flange rings; 4, a second sealing structure; 41 a second packing; 42 sealing rings; 421 antiskid blocks; 43 a seal ring mounting seat; 44 seal ring press plate; 45 fish scales; and 5 sealing the chamber.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 6, the sealing structure for the rotary kiln comprises a cylinder 1 and an external device 2 connected to the end of the cylinder 1, wherein the external device 2 is a stokehold collecting hopper 21 or a discharging system 22. The end part of the stokehole collecting hopper 21 stretches into the front end opening of the barrel 1, a first sealing structure 3 is arranged at a gap of the lap joint position of the barrel 1 and the stokehole collecting hopper 21, the first sealing structure 3 comprises a first packing 31 and a pressing ring 32, at the moment, the first packing 31 is fixed by the pressing ring 32, one end of the pressing ring 32 is fixed at the end part of the barrel 1 through a hexagon bolt, the other end of the pressing ring is tightly contacted with the first packing 31, the first packing 31 is fixed between the barrel 1 and the stokehole collecting hopper 21, and the first packing 31 is prevented from being pushed out of the gap between the barrel 1 and the stokehole collecting hopper 21 due to overlarge pressure in the barrel 1, so that gas leaks; the side that is close to surrounding environment at first packing 31 is equipped with second seal structure 4, second seal structure 4 includes second packing 41, sealing ring 42, sealing ring mount pad 43, sealing ring clamp plate 44, sealing ring mount pad 43 fixed connection is on stokehold collecting hopper 21, sealing ring 42's one end passes through hexagonal bolted connection on sealing ring mount pad 43 and the other end passes through hexagonal bolt fixedly connected with sealing ring clamp plate 44, be equipped with second packing 41 between the port outside of sealing ring 42 and barrel 1, and sealing ring clamp plate 44 sets up the one end at second packing 41, prevent to be released because of too big second packing 41 that leads to of pressure, be equipped with non slipping block 421 simultaneously on sealing ring 42, non slipping block 421 is located the other end of second packing 41, fix the position of second packing 41. The inner side and the outer side of the cylinder body 1 are sealed, if any sealing structure on the outer side or the inner side is damaged, gas leakage cannot be caused, and the sealing effect between the cylinder body 1 and the external device 2 is enhanced. At this time, a sealing chamber 5 is formed between the first sealing structure 3 and the second sealing structure 4, a third sealing structure is formed, sealing effect is improved, and a micro-positive pressure environment is formed by filling gas into the sealing chamber 5 to make the pressure slightly higher than that of the atmosphere in the cylinder, so that the first disc root 31 is further prevented from being pushed out or even exploded, and sealing effect of the cylinder body 1 is ensured. In the present embodiment, the sealed chamber 5 is surrounded by the first packing 31, the second packing 41, the seal ring 42, and the outer wall of the forehearth collecting hopper 21 at this position.
In a preferred embodiment, the cylinder 1 directly stretches into the discharging system 22, at this time, the first sealing structure 3 further comprises a flange ring 33, one end of the flange ring 33 is connected to the discharging system 22, the pressing ring 32 is connected to the other end of the flange ring 33 through a hexagonal bolt, at this time, the flange ring 33 is sleeved outside the first packing 31 and is tightly connected with the first packing 31, and the position of the first packing 31 is fixed by arranging the flange ring 33 and the pressing ring 32 together, so that the first packing 31 can be prevented from moving towards the inside of the discharging system 22, and gaps caused by expansion of the first packing 31 due to heating can be avoided. In this embodiment, the sealed chamber 5 is defined by the first packing 31, the second packing 41, the seal ring 42 and the outer wall of the cylinder 1 in this position.
In a preferred embodiment, the second sealing structure 4 further includes a plurality of louvers 45 according to the space structure of the installation location, the plurality of louvers 45 are stacked and fixed in a staggered manner in sequence, one end of each louver 45 is fixedly connected with an external device, the other end of each louver is tightly lapped on the outer wall of the cylinder 1, the number of parts is small, the sealing effect can be realized, and the rotation of the rotary kiln cylinder 1 is not affected. The sealing is carried out by using the fish scale 45, so that the sealing structure is high-temperature resistant, abrasion resistant, ash-resistant and wind-resistant, and the service life of the sealing structure is further prolonged. In this embodiment, the sealed chamber 5 is defined by the first disc 31 and the louvers 45 and the outer wall of the kiln body in this position.
The present embodiments are merely illustrative of the present utility model and are not intended to be limiting, and the technical solutions that are not substantially transformed under the present utility model are still within the scope of protection.
Claims (10)
1. The sealing structure for the rotary kiln comprises a cylinder body and an external device connected to the end part of the cylinder body, and is characterized in that a first packing is arranged on one side, close to the atmosphere in the cylinder, of the end part of the cylinder body, the first packing is positioned at the connecting position of the cylinder body and the external device, the first packing is fixed by using a pressing ring, and the first packing and the pressing ring form a first sealing structure; the first disc root is provided with a second sealing structure at one side close to the surrounding environment, a sealing cavity is formed between the first sealing structure and the second sealing structure, and air inflation and pressure maintaining can be carried out in the sealing cavity.
2. The sealing structure for a rotary kiln according to claim 1, wherein one end of the pressing ring is fixedly connected to an end portion of the cylinder and the other end abuts against the first packing, the first packing being sandwiched between the cylinder and the external device.
3. The sealing structure for a rotary kiln according to claim 1, wherein the pressing ring is fixed to an inner side of the external device through a flange ring and the other end thereof abuts against the first packing, and the first packing is provided to an inner side of the flange ring and is fitted to the cylinder.
4. The sealing structure for a rotary kiln according to claim 1, wherein the second sealing structure comprises a second packing, a sealing ring mounting seat and a sealing ring pressing plate, the sealing ring mounting seat is fixedly connected to an external device, one end of the sealing ring is fixedly mounted on the sealing ring mounting seat, the other end of the sealing ring is fixedly connected with the sealing ring pressing plate, the second packing is arranged between the outer side of a port of the rotary kiln cylinder body and the sealing ring, and the sealing ring pressing plate is pressed on one side of the second packing.
5. The sealing structure for rotary kiln according to claim 1, wherein the second sealing structure comprises a plurality of louvers, one ends of the louvers are fixedly arranged on an external device, the other ends of the louvers are tightly lapped on the cylinder, and the plurality of louvers are sequentially stacked and fixed in a staggered manner.
6. The seal arrangement for a rotary kiln of claim 4, wherein the seal chamber is defined by a first packing, a second packing and a seal ring.
7. The seal for a rotary kiln of claim 5, wherein when the second seal comprises a louver, the seal chamber is defined by a first packing and a louver.
8. The sealing structure for rotary kiln according to claim 4, wherein a non-slip block is provided on the sealing ring.
9. The sealing structure for rotary kiln according to claim 4, wherein the sealing ring and the sealing ring mounting seat are connected through socket head cap bolts.
10. The sealing structure for rotary kiln according to claim 4, wherein the external device is a stokehold collecting hopper or a discharging system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321305783.5U CN220018120U (en) | 2023-05-26 | 2023-05-26 | Sealing structure for rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321305783.5U CN220018120U (en) | 2023-05-26 | 2023-05-26 | Sealing structure for rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220018120U true CN220018120U (en) | 2023-11-14 |
Family
ID=88684428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321305783.5U Active CN220018120U (en) | 2023-05-26 | 2023-05-26 | Sealing structure for rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220018120U (en) |
-
2023
- 2023-05-26 CN CN202321305783.5U patent/CN220018120U/en active Active
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