CN203560445U - Centrifugal fan main shaft sealing device - Google Patents
Centrifugal fan main shaft sealing device Download PDFInfo
- Publication number
- CN203560445U CN203560445U CN201320569223.0U CN201320569223U CN203560445U CN 203560445 U CN203560445 U CN 203560445U CN 201320569223 U CN201320569223 U CN 201320569223U CN 203560445 U CN203560445 U CN 203560445U
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- China
- Prior art keywords
- main shaft
- sealing
- ring
- seal ring
- sealing seat
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- Expired - Lifetime
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Abstract
The utility model relates to a main centrifugal fan shaft sealing device. The device mainly comprises a sealing seat sleeving outside a main shaft, a translational face sealing ring, a turnover shaft sealing ring and a compressing device, wherein rigid connection is adopted between the sealing seat and a fan housing, and the translational face sealing ring and the turnover shaft sealing ring are tightly bonded with the sealing seat in turn through the compressing device. With adoption of the fan main shaft floating sealing device provided by the utility model, the sealing function is realized, and thrusts generated by deformations of the fan housing to the main shaft are simultaneously effectively reduced; and the sealing device is high in reliability, low in cost, long in service life, and convenient to maintain and replace.
Description
Technical field
The utility model relates to a kind of centrifugal blower main shaft sealing device, belongs to ventilation equipment field.
Background technique
The high-temperature centrifugal fan using at present, the mechanical seal between main shaft and casing or graphite grazing generally adopt rigidity or semi-rigid connection.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 being arranged on casing, cause main shaft grazing and produce to continue thrust, side-play amount is larger, and thrust is larger, cause fan vibration to rise, the problem of sealing accelerated wear test.
Model utility content
In order to solve the problem of above-mentioned existence, the utility model discloses a kind of centrifugal blower main shaft sealing device, this equipment is a kind of simple in structure, safe and reliable, easy to use, with low cost, and the seal arrangement of long service life, realizes the maximization of functions of the equipments and economic benefit.
A kind of blower fan main shaft floating seal, comprising: be sleeved on blower fan main shaft outside sealing seat, can translation surface seal ring, turning Simmer ring and hold down gag, between sealing seat and fan casing, adopt and be rigidly connected, together with can translation surface seal ring fitting tightly with sealing seat successively respectively by hold down gag with turning Simmer ring.Blower fan main shaft floating seal can effectively reduce thrust main shaft being produced because of fan casing distortion when realizing sealing function, and its reliability is high, and cost is lower, long service life, convenient maintenance and replacement.
As a kind of improvement of the present utility model, described can translation surface seal ring end face and sealed seat surface fit tightly and realize face sealing, can translation surface seal ring and sealing seat between without being rigidly connected, slippage relatively, after adopting this design, when fan casing occurs perpendicular to the displacement (radial displacement) of blower fan main shaft axial direction, due to can translation surface seal ring and sealing seat between can relative slippage, when fan casing and sealing seat generation radial displacement will with can stagger by translation surface seal ring, but still can keep sealing surface close contact, so both guaranteed face sealing without leakage, again can be by thrust lasting casing transmission on can translation surface seal ring.
As a kind of improvement of the present utility model, described can translation surface seal ring inner headed face be the sphere that diameter is identical with turning Simmer ring periphery, two spheres are combined closely and are realized sealing, can translation surface seal ring and turning Simmer ring between without being rigidly connected, can relatively overturn, after adopting this design, when fan casing is distorted distortion, can move relative to overturning with turning Simmer ring sphere junction by translation surface seal ring, can not transmit lasting thrust to blower fan main shaft.
As a kind of improvement of the present utility model, described hold down gag is by how secondary supporting leg, and bearing pin and depression bar and a secondary pressing plate and a spring composition, after adopting this design, guarantee that each sealing surface fits tightly, and reduces vibration.
Blower fan main shaft floating seal can effectively reduce thrust main shaft being produced because of fan casing distortion when realizing sealing function, its reliability is high, and cost is lower, long service life, convenient maintenance and replacement, makes to have obtained in working life of seal ring substantial raising.
Accompanying drawing explanation
Fig. 1 is work schematic diagram of the present utility model,
Reference numerals list: 1-blower fan main shaft, 2-turning Simmer ring, 3-hold down gag, 4-can translation surface seal ring, 5-sealing seat, 6-fan casing, 7-supporting leg, 8-pressing plate, 9-bearing pin, 10-depression bar, 11-spring.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.
embodiment 1:
Visible by reference to the accompanying drawings, a kind of blower fan main shaft floating seal, comprising: be sleeved on blower fan main shaft 1 outside sealing seat 5, can translation surface seal ring 4, turning Simmer ring 2 and hold down gag 3, between sealing seat 5 and fan casing 6, adopt and be rigidly connected, together with can translation surface seal ring 4 fitting tightly with sealing seat successively respectively by hold down gag 3 with turning Simmer ring 2.Blower fan main shaft floating seal can effectively reduce because fan casing 6 is out of shape the thrust that main shaft is produced when realizing sealing function, and its reliability is high, and cost is lower, long service life, convenient maintenance and replacement.
embodiment 2:
As a kind of improvement of the present utility model, described can translation surface seal ring 4 end faces and sealing seat 5 faces fit tightly and realize face sealing, can translation surface seal ring 4 and sealing seat 5 between without being rigidly connected, slippage relatively, after adopting this design, when there is the displacement (radial displacement) perpendicular to blower fan main shaft 1 axial direction in fan casing 6, due to can translation surface seal ring 4 and sealing seat 5 between can relative slippage, while there is radial displacement with sealing seat 5 in fan casing 6 will with can stagger by translation surface seal ring 4, but still can keep sealing surface close contact, so both guaranteed face sealing without leakage, again can be by thrust lasting casing transmission on can translation surface seal ring 4.All the other structural features are identical with embodiment 1 with advantage.
embodiment 3:
As a kind of improvement of the present utility model, described can translation surface seal ring 4 inner headed faces be the sphere that diameter is identical with turning Simmer ring 2 peripheries, two spheres are combined closely and are realized sealing, can translation surface seal ring 4 and turning Simmer ring 2 between without being rigidly connected, can relatively overturn, after adopting this design, when fan casing 6 is distorted distortion, can move relative to overturning with turning Simmer ring 2 sphere junctions by translation surface seal ring 4, can not transmit lasting thrust to blower fan main shaft.All the other structures are identical with embodiment 1 with advantage.
embodiment 4:
As a kind of improvement of the present utility model, described hold down gag is by how secondary supporting leg 7, and bearing pin 9 and depression bar 10 and a secondary pressing plate 8 and a spring 11 form, and after adopting this design, guarantee that each sealing surface fits tightly, and reduce vibration.All the other structures are identical with embodiment 1 with advantage.
The utility model can also be combined into new mode of execution by the technical characteristics described in embodiment 2,3,4 at least one and embodiment 1.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technological scheme being comprised of above technical characteristics combination in any.
Claims (4)
1. a blower fan main shaft floating seal, comprising: be sleeved on the outside sealing seat (5) of blower fan main shaft (1), can translation surface seal ring (4), turning Simmer ring (2) and hold down gag (3), it is characterized in that: between sealing seat (5) and fan casing (6), adopt and be rigidly connected, can translation surface seal ring (4) and together with turning Simmer ring (2) fits tightly with sealing seat (5) respectively successively by hold down gag (3).
2. blower fan main shaft floating seal according to claim 1, it is characterized in that: described can translation surface seal ring (4) end face and sealing seat (5) face fit tightly and realize face sealing, can translation surface seal ring (4) and sealing seat (5) between can relative slippage.
3. blower fan main shaft floating seal according to claim 1 and 2, it is characterized in that: described can translation surface seal ring (4) inner headed face be the sphere that diameter is identical with turning Simmer ring (2) periphery, two spheres are combined closely and are realized sealing, can translation surface seal ring (4) and turning Simmer ring (2) between can relatively overturn.
4. blower fan main shaft floating seal according to claim 1, is characterized in that: described hold down gag is by how secondary supporting leg (7), and bearing pin (9) and depression bar (10) and a secondary pressing plate (8) and a spring (11) form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569223.0U CN203560445U (en) | 2013-09-14 | 2013-09-14 | Centrifugal fan main shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320569223.0U CN203560445U (en) | 2013-09-14 | 2013-09-14 | Centrifugal fan main shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560445U true CN203560445U (en) | 2014-04-23 |
Family
ID=50510166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320569223.0U Expired - Lifetime CN203560445U (en) | 2013-09-14 | 2013-09-14 | Centrifugal fan main shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560445U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610621A (en) * | 2020-12-15 | 2021-04-06 | 北京动力机械研究所 | Dislocation self-adaptation mechanical seal structure |
-
2013
- 2013-09-14 CN CN201320569223.0U patent/CN203560445U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610621A (en) * | 2020-12-15 | 2021-04-06 | 北京动力机械研究所 | Dislocation self-adaptation mechanical seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |
|
| CX01 | Expiry of patent term |