CN204459157U - For the dynamic powder concentrator rotor seal structure of coal mill - Google Patents
For the dynamic powder concentrator rotor seal structure of coal mill Download PDFInfo
- Publication number
- CN204459157U CN204459157U CN201520007067.8U CN201520007067U CN204459157U CN 204459157 U CN204459157 U CN 204459157U CN 201520007067 U CN201520007067 U CN 201520007067U CN 204459157 U CN204459157 U CN 204459157U
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- Prior art keywords
- sealing
- rotor
- outer ring
- inner ring
- sealed outer
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- 239000000843 powder Substances 0.000 title claims abstract description 15
- 239000003245 coal Substances 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 238000003754 machining Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of dynamic powder concentrator rotor seal structure for coal mill, comprise rotor and housing, seal arrangement is provided with between described rotor and housing, the roof of described rotor is provided with doughnut-shaped steel plate, the upper surface of described doughnut-shaped steel plate is circumferentially welded with multiple sealing blade uniformly at intervals, described shell bottom wall is welded with sealed outer ring and sealing inner ring, and described sealing impeller clearance is placed in the annular cavity between described sealed outer ring and sealing inner ring.The utility model advantage is that this kind of sealing configuration is simple, good sealing effect; Clearance requirement between sealing blade, sealed outer ring and sealing inner ring is not high, and without machining, reduce cost, and this kind of sealing configuration is without adjusting play, installation is changed convenient, reduces workload.
Description
Technical field
The utility model relates to dynamic coal milling powder-selecting machine, especially relates to the dynamic powder concentrator rotor seal structure for coal mill.
Background technique
Be conventionally used to the dynamic powder concentrator of coal mill, the sealing between its rotor and housing generally adopts labyrinth sealing, and seal clearance is very little, and this is very high with regard to making the machining accuracy of its rotor and casing ring require.On small-sized powder concentrator, effect is better, but along with powder concentrator is to the development in maximization direction, its root diameter, weight are increasing.Still adopt labyrinth seal structure, its drawback just appears suddenly out; First-selection is seal ring machining problem, not only needs large scale computer process equipment, and machining cost obviously increases.Next is that rotor weight is comparatively large, and seal clearance adjustment is very difficult, and seal clearance adjustment is not in place, will cause seal failure, and affect quality of product.
Summary of the invention
The purpose of this utility model is to provide that a kind of structure is simple, the dynamic powder concentrator rotor seal structure for coal mill of good sealing effect.
For achieving the above object, the utility model can take following technical proposals:
Dynamic powder concentrator rotor seal structure for coal mill described in the utility model, comprise rotor and housing, seal arrangement is provided with between described rotor and housing, the roof of described rotor is provided with doughnut-shaped steel plate, the upper surface of described doughnut-shaped steel plate is circumferentially welded with multiple sealing blade uniformly at intervals, described shell bottom wall is welded with sealed outer ring and sealing inner ring, and described sealing impeller clearance is placed in the annular cavity between described sealed outer ring and sealing inner ring.
Described sealing blade is vertically welded on doughnut-shaped steel plate, and described sealed outer ring and sealing inner ring are vertically welded in shell bottom wall.
The utility model advantage is that this kind of sealing configuration is simple, good sealing effect; Clearance requirement between sealing blade, sealed outer ring and sealing inner ring is not high, and without machining, reduce cost, and this kind of sealing configuration is without adjusting play, installation is changed convenient, reduces workload.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the overall schematic of sealing blade described in the utility model.
Fig. 3 is the plan view of Fig. 2.
Embodiment
As shown in Figure 1, 2, 3, dynamic powder concentrator rotor seal structure for coal mill described in the utility model, comprise rotor 1 and housing 2, seal arrangement is provided with between rotor 1 and housing 2, the roof of rotor 1 is fixedly installed doughnut-shaped steel plate 3, the upper surface of doughnut-shaped steel plate 3 is circumferentially welded with multiple sealing blade 4 uniformly at intervals, housing 2 diapire is welded with sealed outer ring 5 and sealing inner ring 6, sealed outer ring 5 and sealing inner ring 6 form annular cavity, and sealing blade 4 gap is placed in the annular cavity between sealed outer ring 5 and sealing inner ring 6; Doughnut-shaped steel plate 3, sealing blade 4, sealed outer ring 5 and sealing inner ring 6 form described sealing configuration.Rotor 1 in working order time, the sealing blade 4 on doughnut-shaped steel plate 3 that its roof is arranged is driven to rotate, because sealing blade 4 gap is placed in the annular cavity between sealed outer ring 5 and sealing inner ring 6, so the air-flow that produces when rotated of sealing blade 4 by annular cavity by sealing blade 4 and sealed outer ring 5 with seal gap between inner ring 6 outwardly, thus the powder in effective prevention powder concentrator passes through from gap, plays seal action.
In addition, due to sealing blade 4, sealed outer ring 5 and sealing inner ring 6 vertical welding respectively, effectively can ensure that air-flow is everywhere equal, more effectively stop powder to pass through from gap, improve sealing effect.
Claims (2)
1. the dynamic powder concentrator rotor seal structure for coal mill, comprise rotor (1) and housing (2), seal arrangement is provided with between described rotor (1) and housing (2), it is characterized in that: on the roof of described rotor (1), be provided with doughnut-shaped steel plate (3), the upper surface of described doughnut-shaped steel plate (3) is circumferentially welded with multiple sealing blade (4) uniformly at intervals, described housing (2) diapire is welded with sealed outer ring (5) and sealing inner ring (6), described sealing blade (4) gap is placed in the annular cavity between described sealed outer ring (5) and sealing inner ring (6).
2. the dynamic powder concentrator rotor seal structure for coal mill according to claim 1, it is characterized in that: described sealing blade (4) is vertically welded on doughnut-shaped steel plate (3), described sealed outer ring (5) and sealing inner ring (6) are vertically welded on housing (2) diapire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520007067.8U CN204459157U (en) | 2015-01-07 | 2015-01-07 | For the dynamic powder concentrator rotor seal structure of coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520007067.8U CN204459157U (en) | 2015-01-07 | 2015-01-07 | For the dynamic powder concentrator rotor seal structure of coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204459157U true CN204459157U (en) | 2015-07-08 |
Family
ID=53666043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520007067.8U Active CN204459157U (en) | 2015-01-07 | 2015-01-07 | For the dynamic powder concentrator rotor seal structure of coal mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204459157U (en) |
-
2015
- 2015-01-07 CN CN201520007067.8U patent/CN204459157U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231227 Address after: No. 139 Science Avenue, High tech Industrial Development Zone, Zhengzhou City, Henan Province, 450000 Patentee after: Liming Heavy Industry Co.,Ltd. Address before: No. 169, science Avenue, high tech Zone, Zhengzhou City, Henan Province, 450000 Patentee before: HENAN LIMING HEAVY INDUSTRY & SCIENCE Co.,Ltd. |