CN114111327A - Nested combined sealing device for supporting roller bearing of rotary kiln - Google Patents
Nested combined sealing device for supporting roller bearing of rotary kiln Download PDFInfo
- Publication number
- CN114111327A CN114111327A CN202111515882.1A CN202111515882A CN114111327A CN 114111327 A CN114111327 A CN 114111327A CN 202111515882 A CN202111515882 A CN 202111515882A CN 114111327 A CN114111327 A CN 114111327A
- Authority
- CN
- China
- Prior art keywords
- bearing
- protective cover
- supporting roller
- shaft sleeve
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 68
- 230000001681 protective effect Effects 0.000 claims abstract description 59
- 238000009423 ventilation Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 abstract description 14
- 239000000428 dust Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 18
- 239000007788 liquid Substances 0.000 description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/22—Rotary drums; Supports therefor
- F27B7/24—Seals between rotary and stationary parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention relates to a nested combined sealing device for a rotary kiln supporting roller bearing, which comprises a supporting roller bearing, a bearing end cover, a supporting roller shaft, a shaft sleeve, a protective cover, a fan, a V-shaped sealing ring, a gap adjusting base plate, a double-lip kiln sealing ring, a protective cover end cover and a lower cone hopper. The beneficial effects are as follows: the device adopts a nesting arrangement mode of the double-lip sealing ring, the V-shaped sealing ring and the protective cover to form a complete sealing protective system, can effectively prevent lubricating oil from leaking, can prevent rainwater and dust from permeating into the interior of the riding wheel bearing, improves the sealing effect, can also realize the recycling of the lubricating oil thrown out by the rotation of the towing wheel shaft, not only purifies the environment, but also reduces the economic loss, reduces the failure rate of equipment, provides powerful guarantee for the normal operation of rotary kiln equipment, and is particularly important at present when green and environment protection is advocated.
Description
Technical Field
The invention relates to the technical field of equipment sealing, in particular to a nested combined sealing device for a rotary kiln supporting roller bearing.
Background
With the increasing demand of active lime, the equipment of the active lime rotary kiln is continuously developed and innovated, and the corresponding requirement on the sealing performance of the equipment is continuously improved and perfected. The supporting roller bearing is used for supporting the supporting roller shaft and the supporting roller connected with the supporting roller shaft, and the supporting roller is used for supporting the weight of the rotary part of the whole rotary kiln. The supporting roller bearing is a general name of a bearing base and a bearing upper cover of the supporting roller. The lubrication mode of the riding wheel shaft is thin oil lubrication, and the cavity of the bearing base is filled with lubricating oil.
The sealing of the idler bearing is critical to the overall operation of the rotary kiln plant. At present, a supporting roller bearing seal mainly adopts a framework oil seal, the supporting roller can axially slide in the running process of a kiln body, and the long-time running can cause the sealing abrasion failure of a supporting roller shaft and the oil leakage. Once oil leaks, and oil supplement is not found in time, the temperature of the riding wheel shaft is increased, and even the riding wheel shaft and the bearing bush are damaged, so that the production of the rotary kiln is stopped. The leaked lubricating oil can also corrode the concrete foundation of the rotary kiln to pollute the environment, and the lubricating oil is generally expensive, so that the direct economic loss is large. In addition, rainfall or external dust can also infiltrate into the bearing from the gap at the sealing position, so that oil product pollution is caused, and the lubricating effect is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the technical problem to be solved by the invention is to provide a nested combined sealing device for a rotary kiln supporting roller bearing, a complete sealing protection system is formed by nesting a double-lip sealing ring, a V-shaped sealing ring and a protection cover, so that the leakage of lubricating oil can be effectively prevented, rainwater and dust can be prevented from permeating into the supporting roller bearing, the sealing effect is improved, the lubricating oil thrown out by the rotation of a dragging roller shaft can be recycled, the environment is purified, the economic loss is reduced, the failure rate of equipment is reduced, a powerful guarantee is provided for the normal operation of rotary kiln equipment, and the nested combined sealing device is particularly important at present when green and environmental protection is advocated.
In order to achieve the purpose, the invention adopts the following technical scheme:
a nested combined sealing device for a rotary kiln supporting roller bearing comprises the supporting roller bearing, a bearing end cover, a supporting roller shaft, a shaft sleeve, a protective cover, a fan, a V-shaped sealing ring, a gap adjusting base plate, a double-lip kiln sealing ring, a protective cover end cover and a lower cone hopper, and is characterized in that the shaft sleeve is sleeved on the supporting roller shaft and penetrates through an opening of the supporting roller bearing to extend into the supporting roller bearing; a double-lip sealing ring is arranged in the bearing end cover, is sleeved on the shaft sleeve and is fixedly connected with the end face of the riding wheel bearing, and seals the opening of the riding wheel bearing; the two V-shaped sealing rings are arranged in a back-to-back manner, sleeved on the shaft sleeve and arranged close to the bearing end cover; the protective cover end cover is sleeved on the shaft sleeve and fixedly connected with the end face of the protective cover, the end face of the protective cover end cover is tightly attached to the V-shaped sealing ring, and the protective cover penetrates through the shaft sleeve and is fastened on the end face of the riding wheel bearing to cover the V-shaped sealing ring and the bearing end cover; the bottom of the protective cover is provided with a lower conical hopper communicated with an external pipeline; the two fans are respectively communicated with the protective cover through ventilation pipelines, and the access ports of the ventilation pipelines are located on the lower side of the central line of the protective cover.
The end face of the shaft sleeve extending into the interior of the riding wheel bearing is provided with an oil blocking cone, a spiral oil groove is machined in the outer surface of the shaft sleeve located in the interior of the riding wheel bearing, and the spiral direction is opposite to the rotating direction of the shaft sleeve.
The protective cover, the bearing end cover and the protective cover end cover are of an upper-lower split structure, and sealant is required to be coated at seams after installation.
Two observation ports are symmetrically arranged at the upper part of the protective cover.
The outer surfaces of the protective cover and the bearing end cover are all set to be conical surfaces.
Compared with the prior art, the invention has the beneficial effects that:
1) a complete sealing protection system is formed by nesting the double-lip sealing ring, the V-shaped sealing ring and the protective cover, so that the sealing effect is improved, and the leakage of lubricating oil can be effectively prevented;
2) because the riding wheel of the rotary kiln is obliquely arranged, the riding wheel shaft and the shaft sleeve thereof are also inclined, so that part of lubricating oil flowing to the upper surface of the shaft sleeve flows to the lower end from the high end of the riding wheel shaft and is gathered at the sealing ring, oil leakage is easy to occur, the fan blows air into the protective cover, micro-positive pressure in the protective cover can be realized, the pressure of the V-shaped sealing ring and the contact surface is increased, and tight adhesion can be realized, so that oil is prevented from seeping;
3) the fan blows air into the protective cover, and the temperature in the protective cover can be reduced, so that the temperatures of the riding wheel shaft and the riding wheel bearing are reduced, in addition, the lower conical hopper arranged at the bottom of the protective cover is communicated with an external pipeline, and the flowing liquid can be intensively recovered, so that the environment is purified, and the economic loss is reduced.
Drawings
FIG. 1 is a schematic front view of the structural principle of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1;
fig. 3 is a schematic side view of the structural principle of the present invention.
In the figure: 1-riding wheel bearing 2-bearing end cover 3-riding wheel shaft 4-shaft sleeve 41-oil blocking cone 42-oil guide groove 5-protective cover 51-observation opening 6-blower 7-V-shaped sealing ring 8-gap adjusting backing plate 9-double-lip kiln sealing ring 10-protective cover end cover 11-lower cone hopper 12-riding wheel
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-3, the nested combined sealing device for the supporting roller bearing of the rotary kiln comprises a supporting roller bearing 1, a bearing end cover 2, a supporting roller shaft 3, a shaft sleeve 4, a protective cover 5, a fan 6, a V-shaped sealing ring 7, a gap adjusting shim plate 8, a double-lip kiln sealing ring 9, a protective cover end cover 10 and a lower cone hopper 11, wherein the shaft sleeve 4 is sleeved on the supporting roller shaft 3 and penetrates through an opening of the supporting roller bearing 1 to extend into the supporting roller bearing 1; a double-lip sealing ring 9 is arranged in the bearing end cover 2, is sleeved on the shaft sleeve 4 and is fixedly connected with the end face of the riding wheel bearing 1, and seals an opening of the riding wheel bearing 1 to form first sealing; the two V-shaped sealing rings 7 are arranged in a back-to-back manner, are sleeved on the shaft sleeve 4 and are arranged close to the bearing end cover 2 to form a second seal; the protective cover end cover 10 is sleeved on the shaft sleeve 4 and fixedly connected with the end face of the protective cover 5, the end face of the protective cover end cover 10 is tightly attached to the V-shaped sealing ring 7, the protective cover 5 penetrates through the shaft sleeve 4 and is fastened on the end face of the riding wheel bearing 1 to cover the V-shaped sealing ring 7 and the bearing end cover 2, and a third seal is formed; the bottom of the protective cover 5 is provided with a lower conical hopper 11 which is communicated with an external pipeline and can intensively recycle and treat the liquid such as the flowing lubricating oil and the like; the two fans 6 are respectively communicated with the protective cover 5 through ventilation pipelines, and the access ports of the ventilation pipelines are positioned at the lower positions of the central line of the protective cover 5.
The end face, extending into the interior of the riding wheel bearing 1, of the shaft sleeve 4 is provided with a spiral oil groove 41, lubricating oil is prevented from flowing to the outer side of the bearing, a spiral oil groove 42 is formed in the outer surface, located inside the riding wheel bearing 1, of the shaft sleeve 4, the spiral direction is opposite to the rotation direction of the shaft sleeve 4, and therefore the lubricating oil on the surface of the shaft sleeve 4 can be guided back in a reverse mode when the shaft sleeve 4 rotates.
The protective cover 5, the bearing end cover 2 and the protective cover end cover 10 are of an upper-lower split structure, and sealing glue is required to be smeared at seams after installation so as to guarantee the sealing effect of the protective cover.
Two observation ports 51 are symmetrically arranged at the upper part of the protective cover 5.
The outer surfaces of the protective cover 5 and the bearing end cover 2 are both set to be conical surfaces, so that oil liquid collection is facilitated.
The protective cover 5 is of a circular ring structure, and because oil leakage is mainly concentrated in the lower area of the circumference, the interface with the fan 6 is arranged on the lower part of the circumference.
Because the riding wheel 12 of the rotary kiln is obliquely arranged, the riding wheel shaft 3 and the shaft sleeve 4 are also oblique, so that part of lubricating oil flowing to the upper surface of the shaft sleeve 4 flows to the lower end from the high end and gathers at the V-shaped sealing ring 7 and the double-lip sealing ring 9, oil leakage is easy to occur, the fan 6 blows air into the protective cover 5, micro-positive pressure in the protective cover 5 can be realized, the pressure at the contact surface of the V-shaped sealing ring 7 with the bearing end cover 2 and the protective cover end cover 10 is increased, and tight adhesion can be realized, so that oil seepage is prevented.
The fan 6 blows air into the protective cover 5, the temperature in the protective cover 5 can be reduced, and therefore the temperature of the riding wheel shaft 3 and the temperature of the riding wheel bearing 1 can be reduced.
The two V-shaped sealing rings 7 are arranged in a back-to-back manner, so that space is saved, two-way sealing can be realized, the two V-shaped sealing rings 7 have different functions, the V-shaped sealing ring 7 on one side of the supporting wheel bearing 1 prevents lubricating oil in the supporting wheel bearing 1 from leaking out, and the V-shaped sealing ring 7 on the other side prevents external rainwater and dust from leaking into the protective cover 5; the sealing ring with the double V-shaped structure is sleeved on the surface of the shaft sleeve to form a plurality of blocking V-shaped ring surfaces, so that the axial flow of liquid flow can be effectively blocked, and the liquid flow is converged at the lower funnel 11, and is convenient to concentrate and recover.
The thickness of the gap adjusting base plate 8 can be adjusted according to the contact state of the contact surface of the V-shaped sealing ring 7 and the protective cover end cover 10, so that good contact sealing is guaranteed. The gap adjusting backing plate 7 is fixedly connected with the protective cover end cover 10 through bolts, and can be directly replaced outside, so that the operation is convenient.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A nested combined sealing device for a rotary kiln supporting roller bearing comprises the supporting roller bearing, a bearing end cover, a supporting roller shaft, a shaft sleeve, a protective cover, a fan, a V-shaped sealing ring, a gap adjusting base plate, a double-lip kiln sealing ring, a protective cover end cover and a lower cone hopper, and is characterized in that the shaft sleeve is sleeved on the supporting roller shaft and penetrates through an opening of the supporting roller bearing to extend into the supporting roller bearing; a double-lip sealing ring is arranged in the bearing end cover, is sleeved on the shaft sleeve and is fixedly connected with the end face of the riding wheel bearing, and seals the opening of the riding wheel bearing; the two V-shaped sealing rings are arranged in a back-to-back manner, sleeved on the shaft sleeve and arranged close to the bearing end cover; the protective cover end cover is sleeved on the shaft sleeve and fixedly connected with the end face of the protective cover, the end face of the protective cover end cover is tightly attached to the V-shaped sealing ring, and the protective cover penetrates through the shaft sleeve and is fastened on the end face of the riding wheel bearing to cover the V-shaped sealing ring and the bearing end cover; the bottom of the protective cover is provided with a lower conical hopper communicated with an external pipeline; the two fans are respectively communicated with the protective cover through ventilation pipelines, and the access ports of the ventilation pipelines are located on the lower side of the central line of the protective cover.
2. The nested combined sealing device for the idler bearing of the rotary kiln as claimed in claim 1, wherein the end face of the shaft sleeve, which extends into the idler bearing, is provided with an oil blocking cone, and the outer surface of the shaft sleeve, which is located inside the idler bearing, is provided with a spiral oil groove, and the spiral direction is opposite to the rotation direction of the shaft sleeve.
3. The nested combined sealing device for the rotary kiln supporting roller bearing as claimed in claim 1, wherein the protective cover, the bearing end cover and the protective cover end cover are all of an up-down split structure, and after installation, the seam is coated with sealant.
4. The nested combination sealing device for the supporting roller bearing of the rotary kiln as claimed in claim 1, wherein the upper part of the protective cover is symmetrically provided with two observation ports.
5. The nested combination sealing device for the supporting roller bearing of the rotary kiln as claimed in claim 1, wherein the outer surfaces of the protective cover and the bearing end cover are provided with conical surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515882.1A CN114111327B (en) | 2021-12-13 | 2021-12-13 | Nested combined sealing device for rotary kiln supporting wheel bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515882.1A CN114111327B (en) | 2021-12-13 | 2021-12-13 | Nested combined sealing device for rotary kiln supporting wheel bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114111327A true CN114111327A (en) | 2022-03-01 |
| CN114111327B CN114111327B (en) | 2024-08-13 |
Family
ID=80365103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111515882.1A Active CN114111327B (en) | 2021-12-13 | 2021-12-13 | Nested combined sealing device for rotary kiln supporting wheel bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114111327B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001304762A (en) * | 2000-04-21 | 2001-10-31 | Meidensha Corp | Rotary heat-treatment equipment |
| CN102537628A (en) * | 2010-12-13 | 2012-07-04 | 贵阳铝镁设计研究院有限公司 | Centralization lubrication device of riding wheel bearing bushes of rotary kiln |
| CN112146431A (en) * | 2020-10-21 | 2020-12-29 | 武钢资源集团有限公司 | Large rotary kiln riding wheel sealing device |
| CN212672221U (en) * | 2020-08-03 | 2021-03-09 | 唐山中材重型机械有限公司 | Sealing structure of riding wheel bearing set |
| CN216745386U (en) * | 2021-12-13 | 2022-06-14 | 中冶焦耐(大连)工程技术有限公司 | Nested combined sealing device for supporting roller bearing of rotary kiln |
-
2021
- 2021-12-13 CN CN202111515882.1A patent/CN114111327B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001304762A (en) * | 2000-04-21 | 2001-10-31 | Meidensha Corp | Rotary heat-treatment equipment |
| CN102537628A (en) * | 2010-12-13 | 2012-07-04 | 贵阳铝镁设计研究院有限公司 | Centralization lubrication device of riding wheel bearing bushes of rotary kiln |
| CN212672221U (en) * | 2020-08-03 | 2021-03-09 | 唐山中材重型机械有限公司 | Sealing structure of riding wheel bearing set |
| CN112146431A (en) * | 2020-10-21 | 2020-12-29 | 武钢资源集团有限公司 | Large rotary kiln riding wheel sealing device |
| CN216745386U (en) * | 2021-12-13 | 2022-06-14 | 中冶焦耐(大连)工程技术有限公司 | Nested combined sealing device for supporting roller bearing of rotary kiln |
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| Publication number | Publication date |
|---|---|
| CN114111327B (en) | 2024-08-13 |
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