CN219301277U - Rotary kiln sealing structure - Google Patents
Rotary kiln sealing structure Download PDFInfo
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- CN219301277U CN219301277U CN202320240488.XU CN202320240488U CN219301277U CN 219301277 U CN219301277 U CN 219301277U CN 202320240488 U CN202320240488 U CN 202320240488U CN 219301277 U CN219301277 U CN 219301277U
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- rotary kiln
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Abstract
The utility model discloses a rotary kiln sealing structure, which comprises a rotary kiln body, a kiln cover, a mounting matrix, an axial sealing element, a radial sealing element and a supporting structure, wherein the mounting matrix, the axial sealing element, the radial sealing element and the supporting structure are arranged between the outer peripheral wall of the rotary kiln body and the inner peripheral wall of the kiln cover; the installation base body is sleeved on the rotary kiln body and is arranged at intervals from the peripheral wall of the rotary kiln body; the axial sealing element is arranged on the mounting substrate and is abutted against the inner peripheral wall of the kiln cover, and the axial sealing element can rotate along with the rotary kiln body; the axial first end of the radial sealing element is connected with the rotary kiln body, the axial second end of the radial sealing element is abutted with the axial first end of the mounting base body, and the radial sealing element can rotate along with the rotary kiln body; one end of the supporting structure is abutted with the axial second end of the mounting matrix, and the other end of the supporting structure is connected with the rotary kiln body. The rotary kiln has strong self-adaptation performance on axial movement and radial runout of the rotary kiln body, and has high sealing reliability.
Description
Technical Field
The utility model relates to the technical field of sealing structures, in particular to a rotary kiln sealing structure.
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 between the rotary kiln body, the kiln head and the kiln tail of the rotary kiln on the market is mainly labyrinth sealing, and the rotary kiln is formed by sleeving a movable labyrinth ring and a static labyrinth ring together, has no contact surface, has simple structure, but has the following defects:
1. the axial float self-adaptation performance of the rotary kiln body is poor, and the method is specifically characterized in that:
in order to avoid the contact of the dynamic labyrinth ring and the static labyrinth ring in the movement and consider the factors of thermal expansion and contraction, play, bending, radial runout and the like of the rotary kiln body, the axial reserved clearance of the labyrinth seal cannot be too small, so that the sealing failure is easy to be caused when the rotary kiln body moves axially due to thermal expansion and contraction, and the sealing reliability is poor;
2. the radial runout self-adaptation performance of the rotary kiln body is poor, and the method is specifically characterized in that:
when the roundness of the rotary kiln body exceeds a design value, part of friction plates are moved out of the labyrinth ring to lose the sealing effect, and production accidents can occur when the roundness of the rotary kiln body exceeds the design value.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a rotary kiln sealing structure which has strong self-adaptive performance on axial movement and radial runout of a rotary kiln body and has high sealing reliability.
The utility model adopts the following technical scheme:
the rotary kiln sealing structure comprises a rotary kiln body and a kiln cover, and a mounting matrix, an axial sealing piece, a radial sealing piece and a supporting structure are arranged between the outer peripheral wall of the rotary kiln body and the inner peripheral wall of the kiln cover;
the installation base body is sleeved on the rotary kiln body and is arranged at intervals from the peripheral wall of the rotary kiln body;
the axial sealing element is arranged on the mounting base body and is abutted against the inner peripheral wall of the kiln cover, and the axial sealing element can rotate along with the rotary kiln body;
the axial first end of the radial sealing element is connected with the rotary kiln body, the axial second end of the radial sealing element is abutted with the axial first end of the installation base body, and the radial sealing element can rotate along with the rotary kiln body;
one end of the supporting structure is abutted with the axial second end of the mounting base body, and the other end of the supporting structure is connected with the rotary kiln body.
Further, the supporting structure comprises a supporting base body, a connecting rod, an adjusting nut and an elastic piece, wherein the first end of the supporting base body is abutted to the second axial end of the mounting base body, the second end of the supporting base body is sleeved at the first end of the connecting rod in an axially movable mode, the second end of the connecting rod is in threaded connection with the rotary kiln body, the adjusting nut is connected to the connecting rod, and one end of the elastic piece abuts against the supporting base body, and the other end of the elastic piece abuts against the adjusting nut.
Further, a bearing is arranged on the first end of the supporting base body, and an outer ring of the bearing is abutted with the second axial end of the mounting base body.
Further, the second end of the connecting rod is in threaded connection with the rotary kiln body, and the supporting structure further comprises a locking nut which is in threaded connection with the second end of the connecting rod and abuts against the rotary kiln body.
Further, a limiting protrusion is arranged on the supporting base body, and the elastic piece is arranged between the limiting protrusion and the adjusting nut.
Further, the elastic piece is a spring sleeved at the second end of the supporting base body.
Further, the number of the radial sealing elements is two, and the two radial sealing elements are arranged at intervals along the radial direction of the rotary kiln body.
Further, the rotary kiln body comprises a rotary kiln cylinder and a sealing head arranged on the outer peripheral wall of the end part of the rotary kiln cylinder, and the mounting base body, the axial sealing piece, the radial sealing piece and the supporting structure are arranged between the outer peripheral wall of the sealing head and the inner peripheral wall of the kiln cover.
Further, an annular accommodating groove is formed in the outer peripheral wall of the seal head and is used for accommodating the radial sealing element, at least part of the mounting base body and the supporting structure.
Further, the supporting structure comprises a connecting rod, a first end of the connecting rod is abutted with an axial second end of the installation base body, and a second end of the connecting rod is in threaded connection with the rotary kiln body.
Compared with the prior art, the utility model has the beneficial effects that:
according to the rotary kiln sealing structure, the mounting substrate, the axial sealing piece, the radial sealing piece and the supporting structure are arranged between the outer peripheral wall of the rotary kiln body and the inner peripheral wall of the kiln cover, so that the axial sealing piece can still be tightly attached to the inner peripheral wall of the kiln cover under the condition that the axial sealing piece can axially move along with the rotary kiln body when the rotary kiln body axially moves due to expansion and contraction (namely, when the rotary kiln body axially moves), the gap between the mounting substrate and the kiln cover can be reliably sealed, and meanwhile, the rotary kiln body can be effectively prevented from being blocked or stuck;
when the rotary kiln body deflects relative to the axial center of the rotary kiln (namely, when radial runout occurs), the installation base body and the radial sealing piece can be kept close, meanwhile, the axial sealing piece and the inner peripheral wall of the kiln cover can be kept close, and gaps between the installation base body and the rotary kiln body are reliably sealed, so that reliable sealing of the rotary kiln body and the kiln cover is realized, and the rotary kiln has stronger self-adaptive performance on axial runout and radial runout of the rotary kiln body and higher sealing reliability.
Drawings
FIG. 1 is a schematic structural view of a rotary kiln seal structure according to the present utility model;
fig. 2 is a partial enlarged view at a in fig. 1.
In the figure: 10. a rotary kiln body; 11. a rotary kiln drum; 12. a seal head; 121. a receiving groove; 20. a kiln cover; 30. a mounting substrate; 40. an axial seal; 50. a radial seal; 60. a support structure; 61. a support base; 611. a limit protrusion; 62. a connecting rod; 63. an adjusting nut; 64. an elastic member; 65. a bearing; 66. and (5) locking the nut.
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 to 2, there is shown a rotary kiln sealing structure according to a preferred embodiment of the present utility model, which includes a rotary kiln body 10 and a kiln shell 20, and a mounting base 30, an axial seal 40, a radial seal 50, and a supporting structure 60 provided between an outer circumferential wall of the rotary kiln body 10 and an inner circumferential wall of the kiln shell 20; the installation base 30 is sleeved on the rotary kiln body 10 and is arranged at a distance from the peripheral wall of the rotary kiln body 10; the axial sealing element 40 is arranged on the installation base 30 and is abutted against the inner peripheral wall of the kiln cover 20 so as to rotate along with the rotary kiln body 10, namely, the axial sealing element 40 is fixedly arranged on the installation base 30 and is in small clearance fit with the inner peripheral wall of the kiln cover 20, specifically, the axial sealing element 40 is abutted against the inner peripheral wall of the kiln cover 20 so as to be tightly abutted against the inner peripheral wall of the kiln cover 20 to seal a clearance between the kiln cover 20 and the installation base 30, and the axial sealing element 40 can be enabled to rotate along with the rotary kiln body 10 so as to ensure that the rotary kiln body 10 can smoothly rotate; the axial first end of the radial sealing element 50 is connected with the rotary kiln body 10, the axial second end is abutted with the axial first end of the installation base body 30, wherein the radial sealing element 50 is abutted with the installation base body 30, so that the radial sealing element 50 can be tightly attached to the axial first end of the installation base body 30 to seal a gap between the installation base body 30 and the rotary kiln body 10, and reliable sealing between the rotary kiln body 10 and the kiln cover 20 is realized by combining the radial sealing element 50 and the axial sealing element 40; one end of the supporting structure 60 is abutted against the axial second end of the mounting base 30, and the other end is connected with the rotary kiln body 10, so that the mounting base 30 can be axially supported, and the mounting base 30 and the radial sealing element 50 can be reliably attached together.
According to the rotary kiln sealing structure, the mounting base body 30, the axial sealing element 40, the radial sealing element 50 and the supporting structure 60 are arranged between the outer peripheral wall of the rotary kiln body 10 and the inner peripheral wall of the kiln cover 20, so that when the rotary kiln body 10 moves axially due to expansion and contraction (namely, when axial movement occurs), the axial sealing element 40 can still be tightly attached to the inner peripheral wall of the kiln cover 20 under the condition that the rotary kiln body 10 moves axially, the gap between the mounting base body 30 and the kiln cover 20 can be reliably sealed, sealing failure is avoided, and meanwhile, the rotary kiln body 10 can be effectively prevented from being blocked or jammed; when the rotary kiln body 10 deflects relative to the axial center of the rotary kiln (namely, radial runout occurs), the mounting base body 30 and the radial sealing piece 50 can be kept close, meanwhile, the axial sealing piece 40 and the inner peripheral wall of the kiln cover 20 can be kept close, gaps between the mounting base body 30 and the rotary kiln body 10 are reliably sealed, sealing failure is avoided, and therefore reliable sealing of the rotary kiln body 10 and the kiln cover 20 is achieved, and the rotary kiln body 10 has strong self-adaptation performance and sealing reliability are higher for axial runout and radial runout of the rotary kiln body 10.
Referring to fig. 1 and 2, in this embodiment, the support structure 60 is disposed along the axial direction of the rotary kiln body 10, the support structure 60 includes a support base 61, a connecting rod 62, an adjusting nut 63, and an elastic member 64, a first end of the support base 61 abuts against an axial second end of the installation base 30, a second end of the support base 61 is axially movably sleeved on the first end of the connecting rod 62, a second end of the connecting rod 62 is connected to the rotary kiln body 10, the adjusting nut 63 is screwed onto the connecting rod 62, one end of the elastic member 64 abuts against the support base 61, the other end abuts against the adjusting nut 63, the elastic member 64 is used to provide floating support for the support base 61, so that the support base 61 can be reliably abutted against the axial second end of the installation base 30 by the elastic member 64, thereby ensuring that the axial first end of the installation base 30 can be tightly attached to the radial seal member 50, ensuring tightness, simultaneously, by operating the adjusting nut 63, the pre-stressing force of the adjusting elastic member 64 can be realized, thereby realizing the pressing force applied by the installation base 30 to the radial seal member 50, and automatically rotating the circumferential wall 10 against the support base 30, and the axial seal member 40 can be smoothly rotatably mounted to the rotary kiln body 30 and the axial seal member 30 by the axial seal member 30, and the axial seal member 30 can be smoothly rotatably mounted to the rotary kiln body 30 and the two end 20 by the axial seal member 30, and ensuring that can be smoothly rotatably and rotatably mounted by the axial seal member 30 and the axial seal member 30 by the axial seal member 30 and the axial seal member 40 and can be rotatably mounted by the axial seal member 30 by the axial seal member 40 and the axial seal member 20 and can be rotatably and rotatably by the axial seal member 20, the rotary kiln body 10 is prevented from being seized or blocked, and the working reliability is higher.
Referring to fig. 1-2, in the present embodiment, a bearing 65 is provided on a first end of the supporting base 61, and an outer ring of the bearing 65 abuts against an axial second end of the mounting base 30, so that when the mounting base 30 is seized or jammed, the provision of the bearing 65 can reduce friction between the mounting base 30 and the supporting base 61, so that the rotary kiln body 10 rotates more smoothly.
In this embodiment, the second end of the connecting rod 62 is screwed onto the rotary kiln body 10, the supporting structure 60 further includes a lock nut 66, and the lock nut 66 is screwed onto the second end of the connecting rod 62 and abuts against the rotary kiln body 10, where the connection difficulty between the second end of the connecting rod 62 and the rotary kiln body 10 can be reduced, the disassembly and assembly are more convenient, and the connecting rod 62 can be reliably locked onto the rotary kiln body 10 by the aid of the lock nut 66, so that the structural reliability is improved.
Specifically, in the present embodiment, the connecting rod 62 is specifically a screw.
Of course, in other embodiments, the second end of the connecting rod 62 may be welded to the rotary kiln body 10, or the connection between the connecting rod 62 and the rotary kiln body 10 may be accomplished by a connection such as a bolt.
Specifically, in the present embodiment, the supporting base 61 is provided with a limiting protrusion 611, and the elastic member 64 is provided between the limiting protrusion 611 and the adjusting nut 63.
Specifically, in the present embodiment, the elastic member 64 is a spring sleeved on the second end of the supporting base 61, so as to improve structural reliability. Of course, in other embodiments, the elastic member 64 may be a spring plate or the like.
Specifically, in the present embodiment, the number of the radial seals 50 is two, and the two radial seals 50 are disposed at intervals in the radial direction of the rotary kiln body 10 to improve the sealing reliability between the installation base 30 and the rotary kiln body 10. Of course, in other embodiments, the radial seal 50 may be provided with one or more than three.
For ease of installation, in the present embodiment, the rotary kiln body 10 includes a rotary kiln cylinder 11 and a head 12 provided on an end outer peripheral wall of the rotary kiln cylinder 11, and the installation base 30, the axial seal 40, the radial seal 50, and the support structure 60 are provided between the outer peripheral wall of the head 12 and the inner peripheral wall of the kiln cover 20.
More specifically, in the present embodiment, the annular accommodating groove 121 is provided on the outer peripheral wall of the head 12, and the annular accommodating groove 121 is used for accommodating the radial seal member 50, at least part of the mounting base 30, and the support structure 60, so that the gap between the rotary kiln body 10 and the kiln cover 20 can be reduced, and the structure can be made more compact.
Of course, in other embodiments, the support structure 60 may include a connecting rod 62, where a first end of the connecting rod 62 abuts against an axial second end of the mounting base 30, and a second end of the connecting rod 62 is screwed with the rotary kiln body 10, so that by rotating the connecting rod 62, it is also possible to adjust the pressing force applied to the mounting base 30, thereby adjusting the force applied to the radial seal 50 by the mounting base 30.
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 (10)
1. The rotary kiln sealing structure is characterized by comprising a rotary kiln body, a kiln cover, a mounting matrix, an axial sealing element, a radial sealing element and a supporting structure, wherein the mounting matrix, the axial sealing element, the radial sealing element and the supporting structure are arranged between the outer peripheral wall of the rotary kiln body and the inner peripheral wall of the kiln cover;
the installation base body is sleeved on the rotary kiln body and is arranged at intervals from the peripheral wall of the rotary kiln body;
the axial sealing element is arranged on the mounting base body, is abutted against the inner peripheral wall of the kiln cover and can rotate along with the rotary kiln body;
the axial first end of the radial sealing element is connected with the rotary kiln body, and the axial second end of the radial sealing element is abutted with the axial first end of the installation base body;
one end of the supporting structure is abutted with the axial second end of the mounting base body, and the other end of the supporting structure is connected with the rotary kiln body.
2. The rotary kiln seal structure as recited in claim 1, wherein the support structure comprises a support base, a connecting rod, an adjusting nut, and an elastic member, wherein a first end of the support base abuts against an axial second end of the mounting base, the second end of the support base is axially movably sleeved on the first end of the connecting rod, the second end of the connecting rod is connected to the rotary kiln body, the adjusting nut is screwed to the connecting rod, one end of the elastic member abuts against the support base, the other end abuts against the adjusting nut, and the elastic member is used for providing floating support for the support base.
3. The rotary kiln seal structure as recited in claim 2, wherein a bearing is provided on a first end of the support base, an outer race of the bearing abutting an axial second end of the mounting base.
4. The rotary kiln seal structure as recited in claim 2 wherein the second end of the connecting rod is threaded onto the rotary kiln body, the support structure further comprising a lock nut threaded onto the second end of the connecting rod and abutting the rotary kiln body.
5. The rotary kiln sealing structure as claimed in claim 2, wherein the supporting base body is provided with a limit protrusion, and the elastic member is disposed between the limit protrusion and the adjusting nut.
6. The rotary kiln sealing structure as claimed in claim 2, wherein the elastic member is a spring sleeved on the second end of the supporting base.
7. The rotary kiln sealing structure as recited in claim 1, wherein the number of the radial sealing members is two, and the two radial sealing members are arranged at intervals along the radial direction of the rotary kiln body.
8. The rotary kiln seal structure as recited in claim 1, wherein the rotary kiln body comprises a rotary kiln cylinder and a head provided on an outer peripheral wall of an end portion of the rotary kiln cylinder, and the mounting base, the axial seal, the radial seal, and the support structure are provided between the outer peripheral wall of the head and an inner peripheral wall of the kiln housing.
9. The rotary kiln seal structure as recited in claim 8, wherein an annular receiving groove is provided in an outer peripheral wall of the head, the annular receiving groove being configured to receive the radial seal, at least a portion of the mounting base, and the support structure.
10. The rotary kiln seal structure as recited in claim 1, wherein the support structure comprises a connecting rod, a first end of the connecting rod being in abutment with an axial second end of the mounting base, the second end of the connecting rod being in threaded engagement with the rotary kiln body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320240488.XU CN219301277U (en) | 2023-02-15 | 2023-02-15 | Rotary kiln sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320240488.XU CN219301277U (en) | 2023-02-15 | 2023-02-15 | Rotary kiln sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219301277U true CN219301277U (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320240488.XU Active CN219301277U (en) | 2023-02-15 | 2023-02-15 | Rotary kiln sealing structure |
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| Country | Link |
|---|---|
| CN (1) | CN219301277U (en) |
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2023
- 2023-02-15 CN CN202320240488.XU patent/CN219301277U/en active Active
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