CN219328304U - Double sealing structure of rotary kiln - Google Patents
Double sealing structure of rotary kiln Download PDFInfo
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- CN219328304U CN219328304U CN202320240501.1U CN202320240501U CN219328304U CN 219328304 U CN219328304 U CN 219328304U CN 202320240501 U CN202320240501 U CN 202320240501U CN 219328304 U CN219328304 U CN 219328304U
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- rotary kiln
- peripheral wall
- kiln body
- kiln
- cover
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Abstract
The utility model discloses a double sealing structure of a rotary kiln, which comprises the following components: a kiln cover; the end part of the rotary kiln body is inserted into the kiln hood and is communicated with the kiln hood; the first sealing ring is arranged between the inner peripheral wall of the kiln cover and the outer peripheral wall of the end part of the rotary kiln body so as to seal the kiln cover and the rotary kiln body; the expansion joint is arranged on the end part of the kiln cover, which is close to the rotary kiln body, circumferentially surrounds the rotary kiln body and is arranged at intervals from the peripheral wall of the rotary kiln body; the second sealing ring is arranged on the peripheral wall of the rotary kiln body and abuts against one end, far away from the kiln cover, of the expansion joint, so that the second sealing ring and the expansion joint are tightly attached to seal the expansion joint and the rotary kiln body, and meanwhile, the expansion joint can be stably arranged outside the rotary kiln body under the axial pressure exerted by the second sealing ring, so that the expansion joint can be compressed when the rotary kiln body is heated and stretched to offset the elongation of the rotary kiln body. The sealing device can effectively improve the sealing reliability and prevent sealing failure.
Description
Technical Field
The utility model relates to the technical field of sealing structures, in particular to a double sealing structure of a rotary kiln.
Background
In many industries such as building materials, metallurgy, chemical industry, environmental protection and the like, rotary round equipment is widely used for carrying out mechanical, physical or chemical treatment on solid materials, the equipment is called a rotary kiln, wherein the rotary kiln mainly comprises a rotary kiln body, kiln heads and kiln tails which are arranged at two ends of the rotary kiln body along the length direction and are fixedly arranged, gaps between the rotary kiln body rotating at high speed and a static kiln head and kiln tails are unavoidable when moving objects are connected with the static objects, when the gaps are not sealed well, cold air can leak into the kiln through the gaps under the suction force of a powerful exhaust fan, so that the combustion temperature and the sintering temperature can be reduced, the heat exchange efficiency and the product sintering are influenced, the energy consumption is increased, the smoke discharging amount of the kiln tails is increased, the load of an exhaust fan is increased, and the electricity consumption is increased.
At present, the sealing structure between the rotary kiln body and the kiln head or the kiln tail in the market is of a single sealing ring structure, so that the sealing reliability is poor and the sealing failure is easy.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a rotary kiln double-sealing structure which can effectively improve the sealing reliability and prevent sealing failure.
The utility model adopts the following technical scheme:
the rotary kiln double seal structure includes:
a kiln cover;
the end part of the rotary kiln body is inserted into the kiln hood and is communicated with the kiln hood;
the first sealing ring is arranged between the inner peripheral wall of the kiln cover and the outer peripheral wall of the end part of the rotary kiln body;
the expansion joint is arranged on the end part, close to the rotary kiln body, of the kiln cover, circumferentially surrounds the rotary kiln body and is arranged at intervals from the outer peripheral wall of the rotary kiln body;
the second sealing ring is arranged on the peripheral wall of the rotary kiln body and abuts against one end, away from the kiln hood, of the expansion joint.
Further, an annular limiting part which is arranged on the inner peripheral wall of the kiln cover and is separated from the outer peripheral wall of the end part of the rotary kiln body is arranged, a screw rod, a nut and a pressing plate are further arranged between the inner peripheral wall of the kiln cover and the outer peripheral wall of the end part of the rotary kiln body, the screw rod is arranged along the axial direction of the rotary kiln body, the first end of the screw rod penetrates through the first sealing ring to be in threaded connection with the annular limiting part, the nut is in threaded connection with the second end of the screw rod, the pressing plate is movably arranged on the screw rod, and the first sealing ring is clamped between the annular limiting part and the pressing plate.
Further, the screw is further provided with a limiting plate capable of moving along the axial direction of the screw, the number of the first sealing rings is at least two, one of the first sealing rings is clamped between the limiting plate and the annular limiting part, and the other first sealing ring is clamped between the limiting plate and the pressing plate.
Further, the number of the limiting plates is two, the two limiting plates are arranged at intervals to form a lubricating oil channel, one of the first sealing rings is clamped between one of the limiting plates and the annular limiting part, the other first sealing ring is clamped between the other limiting plate and the pressing plate, an oil filling port is arranged on the kiln hood, oil outlet holes are formed in the limiting plates, and the oil outlet holes and the oil filling port are communicated with the lubricating oil channel.
Further, the screw is closer to the end opening of the kiln housing than the annular limiting portion.
Further, a first cooling device which is arranged on the inner peripheral wall of the kiln cover and is separated from the outer peripheral wall of the rotary kiln body is arranged on the inner peripheral wall of the kiln cover, and the first cooling device is connected with the first sealing ring.
Further, the first cooling device is annular.
Further, the second sealing ring comprises a first annular sealing part and a second annular sealing part which are arranged one by one and connected one by one, the first annular sealing part is arranged on the outer peripheral wall of the rotary kiln body, and the second annular sealing part is obliquely arranged in the direction away from the outer peripheral wall of the rotary kiln body and is propped against the expansion joint.
Further, a second cooling device which is abutted against the second sealing ring is arranged at one end of the expansion joint, which is far away from the kiln cover, and the second cooling device circumferentially surrounds the rotary kiln body and is arranged at a distance from the peripheral wall of the rotary kiln body.
Compared with the prior art, the utility model has the beneficial effects that:
according to the double sealing structure of the rotary kiln, the rotary kiln body and the kiln cover are sealed by the first sealing ring, so that internal materials can be effectively prevented from leaking to a gap between the rotary kiln body and the expansion joint, meanwhile, the activity of the expansion joint can be ensured, the rotary kiln body and the expansion joint are sealed by the second sealing ring, so that the internal materials can be effectively prevented from leaking out after the first sealing ring fails, the double sealing structure has a double sealing effect, the sealing reliability is higher, and the sealing failure can be effectively prevented.
Drawings
FIG. 1 is a schematic structural view of a double seal structure of a rotary kiln according to the present utility model;
fig. 2 is a partial enlarged view at a in fig. 1.
In the figure: 1. a kiln cover; 2. a rotary kiln body; 21. a rotary kiln drum; 22. a seal head; 3. a first seal ring; 4. an expansion joint; 5. a second seal ring; 51. a first annular seal portion; 52. a second annular seal portion; 6. a screw; 7. a nut; 8. a pressing plate; 9. a limiting plate; 10. a lubrication oil passage; 11. an oil filling port; 12. a first cooling device; 121. an annular limit part; 13. and a second cooling device.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
Referring to fig. 1-2, there is shown a double seal structure of a rotary kiln according to a preferred embodiment of the present utility model, comprising: a kiln cover 1; the end part of the rotary kiln body 2 is inserted into the kiln hood 1 and is communicated with the kiln hood 1; a first seal ring 3 provided between an inner peripheral wall of the kiln housing 1 and an end outer peripheral wall of the rotary kiln body 2 to seal the kiln housing 1 and the rotary kiln body 2; the expansion joint 4 is arranged on the end part of the kiln cover 1, which is close to the rotary kiln body 2, circumferentially surrounds the rotary kiln body 2 and is arranged at intervals from the outer peripheral wall of the rotary kiln body 2; the second sealing ring 5 is arranged on the peripheral wall of the rotary kiln body 2 and abuts against one end, far away from the kiln cover 1, of the expansion joint 4, so that the second sealing ring 5 and the expansion joint 4 are tightly attached to seal the expansion joint 4 and the rotary kiln body 2, and meanwhile, the expansion joint 4 can be stably arranged outside the rotary kiln body 2 under the axial pressure exerted by the second sealing ring 5, so that the expansion joint 4 can be compressed when the rotary kiln body 2 is heated and stretched to offset the elongation of the rotary kiln body 2.
According to the double sealing structure of the rotary kiln, the rotary kiln body 2 and the kiln cover 1 are sealed by the first sealing ring 3, so that internal materials can be effectively prevented from leaking to a gap between the rotary kiln body 2 and the expansion joint 4, meanwhile, the activity of the expansion joint 4 can be ensured, the rotary kiln body 2 and the expansion joint 4 are sealed by the second sealing ring 5, the internal materials can be effectively prevented from leaking out after the first sealing ring 3 fails, the double sealing structure has a double sealing effect, the sealing reliability is higher, and the sealing failure can be effectively prevented.
Referring to fig. 1 and 2, an annular limiting portion 121 is disposed on an inner peripheral wall of the kiln cover 1 and is spaced from an outer peripheral wall of an end portion of the rotary kiln body 2, a screw rod 6, a nut 7 and a pressing plate 8 are further disposed between the inner peripheral wall of the kiln cover 1 and the outer peripheral wall of the end portion of the rotary kiln body 2, the screw rod 6 is disposed along an axial direction of the rotary kiln body 2, a first end of the screw rod 6 passes through the first sealing ring 3 to be in threaded connection with the annular limiting portion 121, the nut 7 is in threaded connection with a second end of the screw rod 6, the pressing plate 8 is movably disposed on the screw rod 6, and the first sealing ring 3 is clamped between the annular limiting portion 121 and the pressing plate 8. The first sealing ring 3 can be sealed and adjusted through the combination of the screw rod 6, the nut 7 and the pressing plate 8, and the pressing plate 8 is pushed to move along the screw rod 6 by screwing the nut 7, so that the pressing plate 8 moves to squeeze and deform the first sealing ring 3, the inner ring of the first sealing ring 3 is tightly attached to the outer peripheral wall of the rotary kiln body 2, the outer ring of the first sealing ring 3 is tightly attached to the inner peripheral wall of the kiln cover 1, and therefore reliable sealing of the rotary kiln body 2 and the kiln cover 1 is achieved.
In order to further improve the sealing reliability of the rotary kiln body 2 and the kiln cover 1, the screw rod 6 is further provided with a limiting plate 9 capable of axially moving along with the screw rod, the number of the first sealing rings 3 is two, one of the first sealing rings 3 is clamped between the limiting plate 9 and the annular limiting part 121, and the other first sealing ring 3 is clamped between the limiting plate 9 and the pressing plate 8. In this way, the first sealing ring 3 close to the pressing plate 8 can be extruded and deformed by screwing the nut 7, and the first sealing ring 3 close to the annular limiting portion 121 can be extruded and deformed by screwing the screw rod 6, so that the two first sealing rings 3 can be adjusted to be closely attached to the rotary kiln body 2 and the kiln cover 1, and the sealing reliability of the rotary kiln body 2 and the kiln cover 1 can be improved.
More specifically, in this embodiment, the number of the limiting plates 9 is two, the two limiting plates 9 are arranged at intervals along the axial direction of the screw rod 6 to form the lubricating oil channel 10, one first sealing ring 3 is clamped between one limiting plate 9 and the annular limiting part 121, the other first sealing ring 3 is clamped between the other limiting plate 9 and the pressing plate 8, the kiln cover 1 is provided with the oil filling port 11, each limiting plate 9 is provided with the oil outlet, and the oil outlet and the oil filling port 11 are communicated with the lubricating oil channel 10, so that lubricating oil is filled into the lubricating oil channel 10 towards the oil filling port 11 and can permeate into each first sealing ring 3 through the oil outlet, so that the rotary kiln body 2 can rotate smoothly, and meanwhile, the lubricating oil positioned between the rotary kiln body 2 and the first sealing ring 3, between the kiln cover 1 and the first sealing ring 3 and in the lubricating oil channel 10 can also play a certain sealing role, and thus the sealing reliability of the rotary kiln body 2 and the kiln cover 1 can be further improved.
For easier installation and adjustment, in the present embodiment, the screw 6 is closer to the end opening of the kiln housing 1 than the annular limiting portion 121 to facilitate the operation of the screw 6 or the nut 7, and it is understood that the end opening of the kiln housing 1 refers specifically to an opening into which the end of the rotary kiln body 2 is inserted.
In this embodiment, the inner peripheral wall of the kiln cover 1 is provided with the first cooling device 12 which is spaced from the outer peripheral wall of the rotary kiln body 2, the first cooling device 12 is connected with the first sealing ring 3, and the first cooling device 12 is used for cooling the first sealing ring 3, so that the service life of the first sealing ring 3 is prolonged, and the sealing reliability is higher.
More specifically, the first cooling device 12 is annular, so as to increase the contact area between the first cooling device 12 and the first sealing ring 3, and improve the heat dissipation effect.
In the present embodiment, the first cooling device 12 is provided with the annular stopper 121.
Referring to fig. 1 and 2, the second seal ring 5 includes a first annular seal portion 51 and a second annular seal portion 52 that are disposed one by one and are connected one by one, where the first annular seal portion 51 is disposed on an outer peripheral wall of the rotary kiln body 2, so that the second seal ring 5 can rotate along with the rotary kiln body 2 and make the second seal ring 5 tightly contact with the outer peripheral wall of the rotary kiln body 2, and the second annular seal portion 52 is disposed obliquely toward a direction away from the outer peripheral wall of the rotary kiln body 2 and abuts against the expansion joint 4, so that one ends of the second seal ring 5 and the expansion joint 4 away from the kiln cover 1 tightly contact with each other to realize sealing between the expansion joint 4 and the rotary kiln body 2, and the second annular seal portion 52 disposed obliquely toward a direction away from the outer peripheral wall of the rotary kiln body 2 has better elasticity, so that the second annular seal ring 5 and the expansion joint 4 can be more reliably attached together, thereby being beneficial to further improving sealing reliability of both the rotary kiln body 2 and the expansion joint 4.
In this embodiment, the end of the expansion joint 4 far away from the kiln cover 1 is provided with the second cooling device 13 which abuts against the second sealing ring 5, the second cooling device 13 circumferentially surrounds the rotary kiln body 2 and is arranged at intervals from the outer peripheral wall of the rotary kiln body 2, and the second cooling device 13 is used for cooling the second sealing ring 5, so that the service life of the second sealing ring 5 can be prolonged, and the sealing reliability is higher.
More specifically, the rotary kiln body 2 includes a rotary kiln cylinder 21 and a head 22 that is annularly provided on an end outer peripheral wall of the rotary kiln cylinder 21, the expansion joint 4 circumferentially surrounds the head 22 and is provided at a distance from the outer peripheral wall of the head 22, the first seal ring 3 is provided between the outer peripheral wall of the head 22 and an inner peripheral wall of the kiln cover 1, and the second seal ring 5 is provided on the head 22.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (9)
1. Rotary kiln dual seal structure, its characterized in that includes:
a kiln cover;
the end part of the rotary kiln body is inserted into the kiln hood and is communicated with the kiln hood;
the first sealing ring is arranged between the inner peripheral wall of the kiln cover and the outer peripheral wall of the end part of the rotary kiln body;
the expansion joint is arranged on the end part, close to the rotary kiln body, of the kiln cover, circumferentially surrounds the rotary kiln body and is arranged at intervals from the outer peripheral wall of the rotary kiln body;
the second sealing ring is arranged on the peripheral wall of the rotary kiln body and abuts against one end, away from the kiln hood, of the expansion joint.
2. The rotary kiln double seal structure as claimed in claim 1, wherein an annular limiting portion is provided on an inner peripheral wall of the kiln cover and spaced from an outer peripheral wall of an end portion of the rotary kiln body, a screw, a nut and a pressing plate are further provided between the inner peripheral wall of the kiln cover and the outer peripheral wall of the end portion of the rotary kiln body, the screw is provided along an axial direction of the rotary kiln body, a first end of the screw passes through the first sealing ring to be screwed with the annular limiting portion, the nut is screwed with a second end of the screw, the pressing plate is movably provided on the screw, and the first sealing ring is sandwiched between the annular limiting portion and the pressing plate.
3. The rotary kiln double seal structure as claimed in claim 2, wherein the screw is further provided with a limiting plate capable of moving along an axial direction thereof, and the number of the first seal rings is at least two, one of the first seal rings is sandwiched between the limiting plate and the annular limiting portion, and the other first seal ring is sandwiched between the limiting plate and the pressing plate.
4. The rotary kiln double-seal structure as claimed in claim 3, wherein the number of the limiting plates is two, the two limiting plates are arranged at intervals along the axial direction of the screw rod to form a lubricating oil channel, one of the first sealing rings is clamped between one of the limiting plates and the annular limiting part, the other first sealing ring is clamped between the other limiting plate and the pressing plate, an oil filling port is arranged on the kiln cover, oil outlet holes are arranged on the limiting plates, and the oil outlet holes and the oil filling port are communicated with the lubricating oil channel.
5. The rotary kiln dual seal structure as claimed in claim 2, wherein the screw is closer to an end opening of the kiln housing than the annular limit portion.
6. The rotary kiln double seal structure as claimed in claim 1, wherein a first cooling device is provided on an inner peripheral wall of the kiln housing at a distance from an outer peripheral wall of the rotary kiln body, and the first cooling device is connected with the first seal ring.
7. The rotary kiln double seal structure as recited in claim 6, wherein said first cooling means is annular.
8. The rotary kiln double seal structure as claimed in claim 1, wherein the second seal ring includes a first annular seal portion and a second annular seal portion which are disposed one by one and connected one by one, the first annular seal portion being disposed on an outer peripheral wall of the rotary kiln body, the second annular seal portion being disposed obliquely in a direction away from the outer peripheral wall of the rotary kiln body and abutting against the expansion joint.
9. The rotary kiln double seal structure as claimed in claim 1, wherein a second cooling device which abuts against the second seal ring is provided at an end of the expansion joint which is far away from the kiln cover, and the second cooling device circumferentially surrounds the rotary kiln body and is arranged at a distance from an outer peripheral wall of the rotary kiln body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320240501.1U CN219328304U (en) | 2023-02-15 | 2023-02-15 | Double sealing structure of rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320240501.1U CN219328304U (en) | 2023-02-15 | 2023-02-15 | Double sealing structure of rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219328304U true CN219328304U (en) | 2023-07-11 |
Family
ID=87063184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320240501.1U Active CN219328304U (en) | 2023-02-15 | 2023-02-15 | Double sealing structure of rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219328304U (en) |
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2023
- 2023-02-15 CN CN202320240501.1U patent/CN219328304U/en active Active
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