CN205858772U - A kind of corrosive resistant fan sealing device - Google Patents
A kind of corrosive resistant fan sealing device Download PDFInfo
- Publication number
- CN205858772U CN205858772U CN201620713347.5U CN201620713347U CN205858772U CN 205858772 U CN205858772 U CN 205858772U CN 201620713347 U CN201620713347 U CN 201620713347U CN 205858772 U CN205858772 U CN 205858772U
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- China
- Prior art keywords
- packing
- politef
- sealing device
- axle sleeve
- seal receptacle
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Abstract
This utility model is about a kind of corrosive resistant fan sealing device, it is characterized in that, including the axle sleeve being sleeved on blower fan main shaft, seal receptacle and the sealing lid being located at seal receptacle rear end, described seal receptacle includes big external diameter disk and little external diameter disk, the middle part of described little external diameter disk is provided with a through hole, grease refueling device it is provided with in described through hole, the periphery of described axle sleeve is arranged with first politef packing the most successively, disc, second politef packing and the 3rd road politef packing, described first politef packing, second politef packing and the 3rd road politef packing respectively with described axle sleeve interference fit, described disc is located at the underface of grease refueling device, the described lid that seals is bolted to connection with seal receptacle.After using said structure, it has the beneficial effect that blower fan sealing member is wear-resisting and non-deformability strengthens, maintenance workload is substantially reduced, mounts and dismounts conveniently.
Description
Technical field
This utility model belongs to technical field of mechanical, specifically, is about a kind of corrosive resistant fan sealing device.
Background technology
The centrifugal blower used at present, mechanical seal between main shaft and casing or graphite grazing typically use rigidity or
Semi-drying connects.Due to high-temperature expansion or inside and outside differential pressure, casing can produce certain deformation or displacement, and then makes to be arranged on casing
On the sealing device off-centring alignment of shafts, cause main shaft grazing and produce and continue thrust, side-play amount is the biggest, and thrust is more
Greatly, fan vibration is caused to rise, the problem sealing accelerated wear test.
Chinese patent CN20485179U discloses a kind of blower fan main shaft sealing device, for the sealing of blower fan main shaft, including
The seal receptacle being sleeved on blower fan main shaft and co-axially fixed sealing of this seal receptacle are covered, described seal receptacle and described blower fan master
Offer annular seal groove on the inwall of axle contact, four spaced apart cyclic polytetrafluoroethylenes are set in this seal groove and seal
Sheet, four described teflon seal sheets are fixed in described seal groove by sealed liner interval, described politef
Contact surface between diaphragm seal and described sealed liner is provided with silica gel pad.But this patent there are the following problems:
1, cost is higher: cyclic polytetrafluoroethylene diaphragm seal and silica gel pad both sealing members need mold, single
Solely customization, cost intensive；
2, its seal receptacle is only axially location；And housing side wall needs boring, easily leaking gas, concentricity is poor.
3, relatively thin due to teflon seal sheet ratio, elasticity is relatively big, and during installation, axle sleeve cannot arrange radially positioning step,
And pad belongs to interference fit with axle sleeve, oils and fats cannot flow in remaining 2 cavity, does not has lubricant effect, and diaphragm seal abrasion adds
Acute；It is high that life-span is short, consumable accessory frequency changed by blower fan；
4, it is≤ultra-thin type sealed the lip of 1mm due to teflon seal sheet, it is necessary to be shaped to whole circulus, more
When changing teflon seal sheet, all accessories such as impeller and axle sleeve need to be dismounted, typically by blower fan producer undertake maintenance and
Maintenance time length, need 1 day, cause puzzlement to user and producer.
Utility model content
The purpose of this utility model is to improve the deficiencies in the prior art, it is provided that a kind of corrosive resistant fan sealing device, to solve
Certainly existing corrosive resistant fan problem of troublesome poeration when changing diaphragm seal.
For achieving the above object, this utility model is by the following technical solutions:
A kind of corrosive resistant fan sealing device, including the axle sleeve being sleeved on blower fan main shaft, seal receptacle be located at seal receptacle
The sealing lid of rear end, described seal receptacle includes that big external diameter disk and little external diameter disk, the middle part of described little external diameter disk are provided with one
Through hole, is provided with grease refueling device in described through hole,
The periphery of described axle sleeve be arranged with the most successively first politef packing, disc, second gather
Tetrafluoroethene packing and the 3rd road politef packing, described first politef packing, second politef
Packing and the 3rd road politef packing respectively with described axle sleeve interference fit, described disc is located at grease refueling device
Underface,
The described lid that seals is bolted to connection with seal receptacle.
According to this utility model, being also arranged with a sealed liner outside described axle sleeve, described sealed liner is positioned at described sealing
The front end of the big external diameter disk of seat, described sealed liner is bolted to connection with big external diameter disk.
Further, described sealed liner is provided with the first screw, and described first screw is blind hole structure, bolt during use
It is not passed through sealed liner, therefore can reduce slip.
Further, described sealed liner is welded and fixed with the casing back side panel of blower fan.
According to this utility model, described seal receptacle is provided with the second screw, and described second screw is blind hole structure, seals lid
When being bolted to connection with seal receptacle, bolt is not passed through seal receptacle, such that it is able to reduce slip.
According to this utility model, the insertion end band of described sealing lid is tapered, described first politef packing
Rear end face also carries tapered, and the rear end face of the described insertion end and first politef packing sealing lid matches.
According to this utility model, the rear end of described axle sleeve is provided with a radial direction step, for being connected, described footpath with fan reel
To leaving certain interval between step and the 3rd road politef packing, formed a ring-type breach, described seal receptacle big outside
The rear end of footpath disk also has additional a radial direction positioning element.During installation, described radial direction positioning element accurately inserts the radial direction of axle sleeve
In ring-type breach between step and the 3rd road politef packing, play the effect of radially location.
According to this utility model, the gap between described axle sleeve and casing back side panel is 2-3mm.
According to this utility model, described disc is annular, and surface is provided with gets rid of oil groove, and described disc is additionally provided with four
The individual oilhole that gets rid of, inside is a cavity, is used for filling grease.
According to this utility model, described first politef packing, second politef packing and the 3rd road
The material of politef packing is filling graphite or the compound PTFE of carbon fiber, and the material of described disc is special casting
Making pyrite ZCuZn38Mn2Pb2, its intensity, corrosion resistance are good, can significantly reduce abrasion.
Corrosive resistant fan sealing device of the present utility model, it provides the benefit that:
1, special material compound politef packing (PTFE+ graphite or carbon fiber) is used to carry out close to blower fan main shaft
Envelope, its wear-resistant and non-deformability is greatly promoted, and the life-span is long, can accomplish 3～5 years non-maintaining.And this type of seals and coordinates high temperature oil
Fat can improve blower fan tolerable temperature about 50 DEG C, reaches≤250 DEG C
2, it is convenient that PTFE packing is endless belt cutout pattern, it mounts and dismounts, and when changing packing, can directly be inserted in sealing
In seat, need not dismount all accessories such as Fan pipeline, impeller, bearing housing, maintenance workload is substantially reduced, and user can
Change with self-maintain, just can complete in 30 points more to change jobs, not affect production, greatly reduce the cost of overhaul；The most effectively
Avoid and main shaft and impeller bore are caused secondary damage；
3, the setting of blind hole structure, it is possible to reduce slip.Two road fluororubber O shape circles effectively stop all kinds of gas-liquid to be mixed simultaneously
The leakage of compound.
Accompanying drawing explanation
Fig. 1 is the front view of corrosive resistant fan sealing device of the present utility model.
Fig. 2 is the side view of corrosive resistant fan sealing device of the present utility model.
Fig. 3 is the structural representation that corrosive resistant fan sealing device is connected with fan reel.
Fig. 4 is the front view of disc of the present utility model.
Fig. 5 is the side view of disc of the present utility model.
Fig. 6 is the front view of PTFE packing of the present invention.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, corrosive resistant fan sealing device of the present utility model is described in further detail.
As depicted in figs. 1 and 2, for corrosive resistant fan sealing device of the present utility model, including being sleeved on blower fan main shaft 1
Axle sleeve 2, seal receptacle 3 and be located at the sealing lid 4 of seal receptacle 3 rear end, described seal receptacle 3 includes big external diameter disk 31 and little external diameter
Disk 32, the middle part of described little external diameter disk 32 is provided with a through hole, is provided with grease refueling device 5 in described through hole,
The periphery of described axle sleeve 2 is arranged with first politef packing 61, disc 7, second the most successively
Road politef packing 62 and the 3rd road politef packing 63, described first politef packing 61, second
Politef packing 62 and the 3rd road politef packing 63 respectively with described axle sleeve 2 interference fit, described disc 7 sets
In the underface of grease refueling device 5, described sealing lid 4 is connected by bolt 8 is fixing with seal receptacle 3.
Described axle sleeve 2 is outer is also arranged with a sealed liner 9, and described sealed liner 9 is positioned at the big external diameter circle of described seal receptacle 3
The front end of dish 31, described sealed liner 9 is connected by bolt 8 is fixing with big external diameter disk 31.
Described sealed liner 9 is provided with the first screw 91, and described first screw 91 is blind hole structure, and during use, bolt 8 does not has
Have through sealed liner 9, therefore can reduce slip.
Described sealed liner 9 is welded and fixed with the casing back side panel 10 of blower fan.
Described seal receptacle 3 is provided with the second screw 33, and described second screw 33 is blind hole structure, and described sealing lid 4 is with close
When envelope seat 3 connects by bolt 8 is fixing, bolt 8 is not passed through seal receptacle 3, such that it is able to reduce slip.
Described seal lid 4 insertion end band tapered, the rear end face of described first politef packing 61 also with
Tapering, the insertion end of described sealing lid 4 matches with the rear end face of first politef packing 61.
The rear end of described axle sleeve 2 is additionally provided with a radial direction step 21, for being connected, institute with fan reel 30 (as shown in Figure 3)
State and radially between step 21 and the 3rd road politef packing 63, leave certain interval, form a ring-type breach 22, described close
The rear end of the big external diameter disk 31 of envelope seat 3 also has additional a radial direction positioning element 34.During installation, described radial direction positioning element 34 essence
Really inserting in the ring-type breach 22 between radial direction step 21 and the 3rd road politef packing 63 of axle sleeve 2, it is the most fixed to play
The effect of position.
Gap between described axle sleeve 2 and casing back side panel 10 is 2-3mm.
As shown in Figure 4 and Figure 5, described disc 7 is annular, and surface is provided with gets rid of oil groove 71, and described disc 7 also sets
Having four to get rid of oilhole 72, inside is a cavity, is used for filling grease.
Described first politef packing 61, second politef packing 62 and the 3rd road polytetrafluoroethyldisk disk
The material of root 63 is filling graphite or the compound PTFE of carbon fiber, and the material of described disc 7 is special casting brass
ZCuZn38Mn2Pb2, its intensity, corrosion resistance are good, and it is lightweight, and the frictional force between politef packing is smaller,
Abrasion can be significantly reduced.
When changing politef packing, first take off seal receptacle 3 and the bolt 8 sealed between lid 4, then take off seal receptacle
3 and seal lid 8；Take off two screws above disc 7 the most again, then take off disc 7；Then by the polytetrafluoro of abrasion
Ethylene packing is changed, then is wound on axle sleeve 2 by new politef packing；Then by seal receptacle 3, the weights such as lid 4 are sealed
Newly it is set on blower fan main shaft 1；Then, seal receptacle 3 is fixed by bolt 8 with sealed liner 9, described seal receptacle 3 and sealing
O 35 it is provided with between liner plate 9；Finally seal receptacle 3 is connected with fan reel 30, described seal receptacle 3 and fan reel 30 it
Between be provided with O 35.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications.These improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (10)
1. a corrosive resistant fan sealing device, it is characterised in that include the axle sleeve being sleeved on blower fan main shaft, seal receptacle and set
In the sealing lid of seal receptacle rear end, described seal receptacle includes big external diameter disk and little external diameter disk, in described little external diameter disk
Portion is provided with a through hole, is provided with grease refueling device in described through hole,
The periphery of described axle sleeve is arranged with first politef packing, disc, second polytetrafluoro the most successively
Ethylene packing and the 3rd road politef packing, described first politef packing, second politef packing
With the 3rd road politef packing respectively with described axle sleeve interference fit, described disc is just being located at grease refueling device
Lower section,
The described lid that seals is bolted to connection with seal receptacle.
2. corrosive resistant fan sealing device as claimed in claim 1, it is characterised in that be also arranged with a sealing outside described axle sleeve
Liner plate, described sealed liner is positioned at the front end of the big external diameter disk of described seal receptacle, and described sealed liner leads to big external diameter disk
Cross the fixing connection of bolt.
3. corrosive resistant fan sealing device as claimed in claim 2, it is characterised in that described sealed liner is provided with the first spiral shell
Hole, described first screw is blind hole structure.
4. corrosive resistant fan sealing device as claimed in claim 2, it is characterised in that described sealed liner and the casing of blower fan
Back side panel is welded and fixed.
5. corrosive resistant fan sealing device as claimed in claim 1, it is characterised in that described seal receptacle is provided with the second spiral shell
Hole, described second screw is blind hole structure.
6. corrosive resistant fan sealing device as claimed in claim 1, it is characterised in that the insertion end of described sealing lid is with cone
Degree, the rear end face of described first politef packing also carries tapered, the described insertion end sealing lid and first poly-four
The rear end face of fluorothene packing matches.
7. corrosive resistant fan sealing device as claimed in claim 1, it is characterised in that the rear end of described axle sleeve is provided with radially
Step, leaves certain interval between described radial direction step and the 3rd road politef packing, form a ring-type breach, described close
The rear end of the big external diameter disk of envelope seat also has additional a radial direction positioning element, and described radial direction positioning element accurately inserts axle sleeve
Radially in the ring-type breach between step and the 3rd road politef packing.
8. corrosive resistant fan sealing device as claimed in claim 1, it is characterised in that between described axle sleeve and casing back side panel
Gap be 2-3mm.
9. corrosive resistant fan sealing device as claimed in claim 1, it is characterised in that described disc is annular, on surface
Being provided with and get rid of oil groove, described disc is additionally provided with four and gets rid of oilhole, inside is a cavity.
10. corrosive resistant fan sealing device as claimed in claim 1, it is characterised in that described first polytetrafluoroethyldisk disk
The material of root, second politef packing and the 3rd road politef packing is fills the compound of graphite or carbon fiber
Type PTFE, the material of described disc is casting brass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620713347.5U CN205858772U (en) | 2016-07-08 | 2016-07-08 | A kind of corrosive resistant fan sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620713347.5U CN205858772U (en) | 2016-07-08 | 2016-07-08 | A kind of corrosive resistant fan sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858772U true CN205858772U (en) | 2017-01-04 |
Family
ID=57645665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620713347.5U Withdrawn - After Issue CN205858772U (en) | 2016-07-08 | 2016-07-08 | A kind of corrosive resistant fan sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971925A (en) * | 2016-07-08 | 2016-09-28 | 上海通用风机股份有限公司 | Sealing device for antiseptic draught fan |
-
2016
- 2016-07-08 CN CN201620713347.5U patent/CN205858772U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971925A (en) * | 2016-07-08 | 2016-09-28 | 上海通用风机股份有限公司 | Sealing device for antiseptic draught fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170104 Effective date of abandoning: 20180907 |
|
| AV01 | Patent right actively abandoned |