CN203214391U - Centrifugal fan sealing structure - Google Patents
Centrifugal fan sealing structure Download PDFInfo
- Publication number
- CN203214391U CN203214391U CN 201320089927 CN201320089927U CN203214391U CN 203214391 U CN203214391 U CN 203214391U CN 201320089927 CN201320089927 CN 201320089927 CN 201320089927 U CN201320089927 U CN 201320089927U CN 203214391 U CN203214391 U CN 203214391U
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- CN
- China
- Prior art keywords
- main shaft
- sealing seat
- sealing
- plate
- asbestos packing
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a centrifugal fan sealing structure which comprises a machine shell, a main shaft and a sealing seat sleeved on the main shaft. Asbestos packing which is tightly attached to the main shaft is arranged in the sealing seat, teeth for sealing are arranged on one side of the sealing seat, and a comb plate meshed with the teeth on the sealing seat is further sleeved on the main shaft. When a clearance is formed between the asbestos packing and the main shaft due to abrasion or the asbestos packing can not be tightly attached to the main shaft due to high-temperature expansion, the comb plate is meshed with the sealing seat, the double-sealing effect is achieved, and gas media in the machine shell are effectively prevented from leaking.
Description
Technical field
The utility model relates to centrifugal extension set technical field, refers to a kind of centrifugal blower sealing configuration especially.
Background technique
For blower fan, the seal arrangement of blower fan be mainly used in preventing gas medium in the casing housing to outer leakage, influence fan efficiency, and cause environmental pollution and the corrosion of outside component etc.The seal arrangement of general blower fan, normally use asbestos packing as sealing, and when fan operation after a period of time, asbestos packing and main shaft rub, cause asbestos packing to produce wearing and tearing, to have certain clearance between main shaft and the asbestos packing, and not have second resealing, the gas medium in the casing housing then can be by the gap to external diffusion.
The model utility content
The utility model proposes a kind of sealing configuration of centrifugal blower, reliable in function plays double seal to blower fan, has more effectively prevented the leakage of gas medium in the casing.
The technical solution of the utility model is achieved in that a kind of centrifugal blower sealing configuration, comprise casing, main shaft and be set in sealing seat on the main shaft, be provided with the asbestos packing that fits tightly with main shaft in the sealing seat, one side of sealing seat is provided with the tooth for sealing, also be arranged with on the described main shaft with sealing seat on the comb floor plate of tooth engagement.
Further, be provided with liner plate between described casing and the sealing seat, also be provided with cover plate, sealed bolster plate between described liner plate and the sealing seat; Described cover plate, sealed bolster plate are by running through being bolted on the liner plate of sealing seat.
Further, described comb floor plate is fixed by fastening screw trip bolt and main shaft.
Further, described bolt is provided with packing ring.
Compared with prior art, the beneficial effects of the utility model are: produce gap because of wearing and tearing with main shaft when asbestos packing, or because high temperature expands when causing asbestos packing and main shaft not to fit closely, comb floor plate and sealing seat engagement, played two resealings, prevented that effectively the gas medium in the casing from leaking.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model centrifugal blower sealing configuration;
Fig. 2 is the local structure for amplifying schematic representation at A position among Fig. 1.
Among the figure: 1, casing; 2, main shaft; 3, sealing seat; 4, comb floor plate; 5, liner plate; 6, asbestos packing; 7, cover plate; 8, bolt; 9, sealed bolster plate.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, Fig. 2, a kind of centrifugal blower sealing configuration, comprise casing 1, main shaft 2 and be set in sealing seat 3 on the main shaft 2, be provided with the asbestos packing 6 that fits tightly with main shaft 2 in the sealing seat 3, one side of sealing seat 3 is provided with the tooth for sealing, also be arranged with on the described main shaft 2 with sealing seat 3 on the comb floor plate 4 of tooth engagement.The sealing structure has played double seal to blower fan, when fan operation after a period of time, asbestos packing 6 rubs with main shaft 2, cause asbestos packing 6 to produce wearing and tearing, in the time of will having certain clearance between main shaft 2 and the asbestos packing 6, sealing seat 3 will play two resealings to blower fan with comb floor plate 4, prevent that effectively gas medium from leaking.
Further, be provided with liner plate 5 between described casing 1 and the sealing seat 3, also be provided with cover plate 7, sealed bolster plate 9 between described liner plate 5 and the sealing seat 3; Described cover plate 7, sealed bolster plate 9 are fixed on the liner plate 5 by the bolt 8 that runs through sealing seat 3.Wherein, it is fixing with casing 1 that sealing seat 3 is convenient in the setting of liner plate 5, cover plate 7, sealed bolster plate 9, and bolt 8, packing ring compress sealing seat 3, sealed bolster plate 9, cover plate 7 and be fixed on the liner plate 5.
Further, described comb floor plate 4 is fixing by fastening screw trip bolt and main shaft 2, fixes by screw, is convenient to maintenance, changes comb floor plate 4.
Further, described bolt 8 is provided with packing ring, and arranging of its middle washer prevents that effectively bolt 8 is loosening, has the effect that prevents that bolt 8 from skidding.
Asbestos packing 6 in the utility model in the sealing seat 3 is fitted with main shaft 2 intimate, can be used as first resealing between casing 1 and the main shaft 2; Concavo-convex rank is closed between comb floor plate 4 and the sealing seat 3, is the inflection of " it " shape, is the barrier of first resealing.When fan operation, 2 runnings of driven by motor main shaft, comb floor plate 4 is also along with main shaft 2 turns round together, in the process of running up, produce air-flow on the comb floor plate 4, this air-flow is perpendicular to main shaft 2 diameters of axle and along opposite both direction diffusion, the air-flow that wherein points to main shaft 2 directions produces active force to the gas medium that leaks, and stops gas medium to leak, and this is second resealing between casing 1 and the main shaft 2.When fan operation after a period of time, asbestos packing 6 rubs with main shaft 2, causes asbestos packing 6 to produce wearing and tearing, will have certain clearance between main shaft 2 and the asbestos packing 6, and second resealing will play the effect that the prevention gas medium leaks at this moment.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. centrifugal blower sealing configuration, comprise casing (1), main shaft (2) and be set in sealing seat (3) on the main shaft (2), be provided with the asbestos packing (6) that fits tightly with main shaft (2) in the sealing seat (3), it is characterized in that: a side of described sealing seat (3) is provided with the tooth for sealing, also be arranged with on the described main shaft (2) with sealing seat (3) on the comb floor plate (4) of tooth engagement.
2. centrifugal blower sealing configuration according to claim 1 is characterized in that: be provided with liner plate (5) between described casing (1) and the sealing seat (3), also be provided with cover plate (7), sealed bolster plate (9) between described liner plate (5) and the sealing seat (3); Described cover plate (7), sealed bolster plate (9) are fixed on the liner plate (5) by the bolt (8) that runs through sealing seat (3).
3. centrifugal blower sealing configuration according to claim 1 is characterized in that: described comb floor plate (4) is fixing by fastening screw trip bolt and main shaft (2).
4. centrifugal blower sealing configuration according to claim 2, it is characterized in that: described bolt (8) is provided with packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089927 CN203214391U (en) | 2013-02-27 | 2013-02-27 | Centrifugal fan sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320089927 CN203214391U (en) | 2013-02-27 | 2013-02-27 | Centrifugal fan sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214391U true CN203214391U (en) | 2013-09-25 |
Family
ID=49203935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320089927 Expired - Fee Related CN203214391U (en) | 2013-02-27 | 2013-02-27 | Centrifugal fan sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214391U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980349A (en) * | 2018-09-20 | 2018-12-11 | 重庆通用工业(集团)有限责任公司 | A kind of centrifugal blower compound seal |
| CN113513591A (en) * | 2021-08-13 | 2021-10-19 | 重庆通用工业(集团)有限责任公司 | Adjustable sealing device |
-
2013
- 2013-02-27 CN CN 201320089927 patent/CN203214391U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980349A (en) * | 2018-09-20 | 2018-12-11 | 重庆通用工业(集团)有限责任公司 | A kind of centrifugal blower compound seal |
| CN108980349B (en) * | 2018-09-20 | 2024-02-06 | 重庆通用工业(集团)有限责任公司 | Composite seal for centrifugal fan |
| CN113513591A (en) * | 2021-08-13 | 2021-10-19 | 重庆通用工业(集团)有限责任公司 | Adjustable sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 |