CN204851759U - Fan mainshaft sealing device - Google Patents
Fan mainshaft sealing device Download PDFInfo
- Publication number
- CN204851759U CN204851759U CN201520522339.8U CN201520522339U CN204851759U CN 204851759 U CN204851759 U CN 204851759U CN 201520522339 U CN201520522339 U CN 201520522339U CN 204851759 U CN204851759 U CN 204851759U
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- China
- Prior art keywords
- main shaft
- blower fan
- fan main
- external diameter
- sealing seat
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Abstract
The utility model provides a fan mainshaft sealing device for fan mainshaft's is sealed, including seal receptacle (1) of suit on fan mainshaft, with this seal receptacle (1) coaxial fixed sealed lid (2) seal receptacle (1) with set up ring packing groove (3) on the inner wall of fan mainshaft contact, set up several spaced apart annular teflon seal piece (4) in this seal groove (3). The utility model provides a pair of fan mainshaft sealing device adopts multichannel teflon seal piece (4), utilizes the toughness and the lubricity of polytetrafluoroethylene material for compress tightly the main shaft under the fan internal pressure, the leakproofness is good, set up lubricating grease filling device (6) on seal receptacle (1), improve the lubricity, prolong the life -span of fan, simple to operate, the cost is lower.
Description
Technical field
The utility model relates to a kind of seal arrangement, particularly relates to a kind of blower fan main shaft seal arrangement, belongs to field of ventilation equipment.
Background technique
The centrifugal blower used at present, the mechanical seal between main shaft and casing or graphite grazing generally adopt rigidity or varied rigid link.Due to high temperature or inside and outside differential pressure, casing can produce certain distortion or displacement, drives the seal arrangement off-centring alignment of shafts be arranged on casing, cause main shaft grazing and produce and continue thrust, side-play amount is larger, and thrust is larger, fan vibration is caused to rise, the problem of sealing accelerated wear test.
Chinese patent CN102588326A discloses a kind of fan bearing-seat sealing device, comprise main shaft, described main shaft is provided with bearing support, bearing, bearing cover and gland successively, described bearing cover is provided with felt, described bearing and bearing cover part are provided with the first space, be provided with flinger ring and connect oil ring in described first space; The endoporus of flinger ring is with tapering; Described flinger ring and connect between oil ring and leave second space; Described first space communicates with second space; The whole space of seal arrangement is labyrinth-like, and first a large amount of liquid oil that bearing throws away are connect oil ring and catch, and a small amount of liquid oil flows through from second space, and flinger ring plays damping function, also has felt to play the effect of three seals.But the felt seal of this Patent Utility Model may produce felt chip, pollution lubricating oil, increases the rotational resistance of bearing.
Model utility content
In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is: provide a kind of good airproof performance, lubricity good, easy for installation and the blower fan main shaft seal arrangement that cost is low.
For achieving the above object, the utility model is by the following technical solutions:
The utility model provides a kind of blower fan main shaft seal arrangement, for the sealing of blower fan main shaft, comprise the sealing seat be sleeved on blower fan main shaft, with the co-axially fixed sealing cover of sealing seat, the inwall that described sealing seat contacts with described blower fan main shaft offers annular seal groove, several isolated cyclic polytetrafluoroethylene diaphragm seal is set in sealing groove.
In further preferred version, the degree of depth of described seal groove is less than the width of described teflon seal sheet.
Further preferably, several described teflon seal sheet is fixed in described seal groove by sealed liner interval.
Further preferably, described sealing seat comprises large external diameter disk and little external diameter circle neck, and described sealing cover is fixed on the side of described little external diameter circle neck.More preferably, described sealing cover is fixed on the side of the little external diameter circle neck of described sealing seat by axial set screw.
Further preferably, on the little external diameter circle neck of described sealing seat, radial direction arranges of a grease oil-filling device.Further, the wall thickness of the little external diameter circle neck of the through described sealing seat of described lubricating grease oil-filling device.
Further preferably, the surface of contact between described teflon seal sheet and described sealed liner is also provided with silica gel pad.
The utility model adopts technique scheme, compared with prior art, has following technique effect:
1) a kind of blower fan main shaft seal arrangement that the utility model provides adopts multiple tracks teflon seal sheet, utilizes toughness and the lubricity of polytetrafluoroethylmaterial material, makes to compress main shaft, good airproof performance under blower fan internal pressure;
2) lubricating grease oil-filling device is set on sealing seat, improves lubricity, extend the life-span of blower fan;
3) easy for installation, cost is lower.
Accompanying drawing explanation
Fig. 1 is the front schematic view of a kind of blower fan main shaft seal arrangement that the utility model relates to;
Fig. 2 is the side sectional view of a kind of blower fan main shaft seal arrangement that the utility model relates to;
In figure,
1-sealing seat, the large external diameter disk of 11-, 12-little external diameter circle neck,
2-sealing cover,
3-seal groove,
4-teflon seal sheet,
5-sealed liner,
6-lubricating grease oil-filling device,
7-set screw,
8-silica gel pad.
Embodiment
Carry out detailed and concrete introduction below by specific embodiment to the utility model, to make better to understand the utility model, but following embodiment does not limit the utility model scope.
As shown in Fig. 1 ~ 2, the present embodiment provides a kind of blower fan main shaft seal arrangement, for the sealing of blower fan main shaft, comprise the sealing seat 1 be sleeved on blower fan main shaft, with the co-axially fixed sealing cover 2 of sealing seat 1, the inwall that described sealing seat 1 contacts with described blower fan main shaft offers annular seal groove 3, several isolated cyclic polytetrafluoroethylene diaphragm seal 4 is set in sealing groove 3.
Preferably, the degree of depth of described seal groove 3 is less than the width of described teflon seal sheet 4, and when mounted, described teflon seal sheet 4 is in bending state.
Further preferably, several described teflon seal sheet 4 is fixed in described seal groove 3 by sealed liner 5 interval.
Described sealing seat 1 comprises large external diameter disk 11 and little external diameter circle neck 12, and described sealing cover 2 is fixed on the side of the little external diameter circle neck 12 of described sealing seat 1 by axial set screw 7.
Further preferably, on the little external diameter circle neck 12 of described sealing seat 1, radial direction arranges of a grease oil-filling device 6.Further, the wall thickness of the little external diameter circle neck 12 of the through described sealing seat 1 of described lubricating grease oil-filling device 6.
Further preferably, the surface of contact between described teflon seal sheet 4 and described sealed liner 5 is also provided with silica gel pad 8.
A kind of blower fan main shaft seal arrangement that the utility model provides has the following advantages:
1) adopt multiple tracks teflon seal sheet, utilize toughness and the lubricity of polytetrafluoroethylmaterial material, make to compress main shaft, good airproof performance under blower fan internal pressure;
2) lubricating grease oil-filling device is set on sealing seat, improves lubricity, extend the life-span of blower fan;
3) easy for installation, cost is lower.
Be described in detail specific embodiment of the utility model above, but it is just as example, the utility model is not restricted to specific embodiment described above.To those skilled in the art, any equivalent modifications that the utility model is carried out and substituting also all among category of the present utility model.Therefore, not departing from the equalization conversion and amendment done under spirit and scope of the present utility model, all should be encompassed in scope of the present utility model.
Claims (8)
1. a blower fan main shaft seal arrangement, for the sealing of blower fan main shaft, comprise the sealing seat (1) be sleeved on blower fan main shaft, with sealing seat (1) co-axially fixed sealing cover (2), it is characterized in that, the inwall that described sealing seat (1) contacts with described blower fan main shaft offers annular seal groove (3), several isolated cyclic polytetrafluoroethylene diaphragm seal (4) is set in sealing groove (3).
2. blower fan main shaft seal arrangement according to claim 1, is characterized in that, the degree of depth of described seal groove (3) is less than the width of described teflon seal sheet (4).
3. blower fan main shaft seal arrangement according to claim 1, is characterized in that, several described teflon seal sheet (4) is fixed in described seal groove (3) by sealed liner (5) interval.
4. blower fan main shaft seal arrangement according to claim 1, is characterized in that, described sealing seat (1) comprises large external diameter disk (11) and little external diameter circle neck (12), and described sealing cover (2) is fixed on the side of described little external diameter circle neck (12).
5. blower fan main shaft seal arrangement according to claim 4, is characterized in that, described sealing cover (2) is fixed on the side of little external diameter circle neck (12) of described sealing seat (1) by axial set screw (7).
6. blower fan main shaft seal arrangement according to claim 4, is characterized in that, arranges of a grease oil-filling device (6) in the upper radial direction of little external diameter circle neck (12) of described sealing seat (1).
7. blower fan main shaft seal arrangement according to claim 6, is characterized in that, the wall thickness of little external diameter circle neck (12) of the described through described sealing seat of lubricating grease oil-filling device (6) (1).
8. blower fan main shaft seal arrangement according to claim 3, is characterized in that, the surface of contact between described teflon seal sheet (4) and described sealed liner (5) is also provided with silica gel pad (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522339.8U CN204851759U (en) | 2015-07-17 | 2015-07-17 | Fan mainshaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522339.8U CN204851759U (en) | 2015-07-17 | 2015-07-17 | Fan mainshaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851759U true CN204851759U (en) | 2015-12-09 |
Family
ID=54742313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520522339.8U Active CN204851759U (en) | 2015-07-17 | 2015-07-17 | Fan mainshaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851759U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065322A (en) * | 2015-07-17 | 2015-11-18 | 上海通用风机股份有限公司 | Sealing device for draught fan main shaft |
-
2015
- 2015-07-17 CN CN201520522339.8U patent/CN204851759U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065322A (en) * | 2015-07-17 | 2015-11-18 | 上海通用风机股份有限公司 | Sealing device for draught fan main shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |