CN203214399U - Sealing device for centrifugal type blower fan - Google Patents
Sealing device for centrifugal type blower fan Download PDFInfo
- Publication number
- CN203214399U CN203214399U CN 201320095486 CN201320095486U CN203214399U CN 203214399 U CN203214399 U CN 203214399U CN 201320095486 CN201320095486 CN 201320095486 CN 201320095486 U CN201320095486 U CN 201320095486U CN 203214399 U CN203214399 U CN 203214399U
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- ring
- rings
- blower fan
- spring
- floating
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Abstract
The utility model discloses a sealing device for a centrifugal type blower fan. The sealing device comprises floating rings, the floating rings are in clearance fit with an impeller working shaft of the blower fan, and one ends of the floating rings are axially connected with sealing bases through pin bolts. One ends of the pin bolts are in close fit with the sealing bases, and the other ends of the pin bolts are in clearance fit with the floating rings. Baffles fixed with the sealing bases are sleeved at the other ends of the floating rings in a penetrating mode, and press rings are embedded at the outer ends of the baffles. Through holes corresponding to the bottoms of the press rings are formed in the baffles, springs penetrate through the through holes, one ends of the springs are fixedly connected with the press rings, and the other ends of the springs are connected with gaskets tightly pressed on the floating rings. The sealing device for the centrifugal type blower fan can guarantee to still have a good sealing effect under a surging working condition, and an independent oil supply system is not needed.
Description
Technical field
The utility model relates to a kind of seal arrangement for centrifugal bulging pressure fan.
Background technique
At present, centrifugal fan can compress gas to increase the pressure of gas, obtains use more and more widely in fields such as sewage treatment, desulfurization, metallurgy.In the prior art, for the hungry sealing of centrifugal fan, mainly adopt labyrinth seal and floating-ring seal.Labyrinth seal have make simple, advantage such as be easy to install, do not need to lubricate, but because it adopts the principle of multistage throttle point leakage step-down, exist leakage rate more, after the blower fan surge, almost lose sealing effect shortcoming.Good sealing effect, the leakage rate of floating-ring seal are little, but need independent oil supply system, are unfavorable for simplifying set structure and save cost.
Summary of the invention
At above-mentioned deficiency of the prior art, the utility model provides a kind of seal arrangement for centrifugal bulging pressure fan, can guarantee still have good sealing effect under surging condition, and not need independent oil supply system.
The technical solution of the utility model is a kind of seal arrangement for centrifugal bulging pressure fan, comprises and the floating ring of the impeller working shaft Spielpassung of blower fan that described floating ring one end axially is connected with sealing seat by pin; Described pin one end and described sealing seat drive fit, the other end and described floating ring Spielpassung; The described floating ring the other end is coated with the baffle plate fixing with described sealing seat, and described baffle plate outer end is embedded with pressure ring; Bottom corresponding to pressure ring on described baffle plate is provided with through hole, passes described through hole and is provided with spring, and described spring one end is fixedlyed connected with described pressure ring, and the spring the other end is connected with the liner that is pressed on the described floating ring.
Further, described liner is provided with the guide rod that passes described spring.Guide rod can play leading role in the spring compressed against gasket.
Further, described baffle plate is connected with described sealing seat by screw.
Further, described spring and described pin are on same axis.Be beneficial to the axial float of floating ring.
Further, described sealing seat periphery is provided with seal ring.Strengthen sealability.
The beneficial effects of the utility model are: because impeller outlet end (high temperature and high pressure gas) exists bigger pressure and temperature difference with external atmosphere pressure (normal temperature and pressure), can drive the floating ring trace during rotation of impeller working shaft rotates, the gas of High Temperature High Pressure end just can be to the gas flow of normal temperature and pressure end, form the dynamic pressure air film, floating ring floats under the effect of dynamic pressure air film, up to reaching the best clearance position with the impeller working shaft, dynamic pressure this moment air film plays the effect of balance impeller outlet end gas and ambient atmosphere, and then impeller outlet end gas no longer leaks to the external world.Even under surge condition, floating ring also can float with the motion of impeller working shaft, finally reaches the best clearance position, guarantees sealing effect.
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 utility model structural representation;
Fig. 2 is the partial enlarged drawing of Fig. 1.
Embodiment
Further describe the utility model below in conjunction with specific embodiment and accompanying drawing.
A kind of seal arrangement for centrifugal bulging pressure fan comprises and the floating ring 1 of the impeller working shaft Spielpassung of blower fan that described floating ring 1 one ends axially are connected with sealing seat 3 by pin 2; Described pin 2 one ends and described sealing seat drive fit, the other end and described floating ring 1 Spielpassung; Described floating ring 1 the other end is coated with the baffle plate of fixing with described sealing seat 37, and described baffle plate 7 outer ends are embedded with pressure ring 6; Bottom corresponding to pressure ring 6 on described baffle plate 7 is provided with through hole, passes described through hole and is provided with spring 10, and described spring 10 1 ends are fixedlyed connected with described pressure ring 6, and spring 10 the other ends are connected with the liner 9 that is pressed on the described floating ring.Described liner 9 is provided with the guide rod 5 that passes described spring 10.Described baffle plate 7 is connected with described sealing seat 3 by screw 4.Described spring 10 and described pin 2 are on same axis.Described sealing seat 3 peripheries are provided with seal ring 8.
More than technological scheme that the utility model embodiment is provided be described in detail, used specific case herein the utility model embodiment's principle and mode of execution are set forth, above embodiment's explanation only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and application area, all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (5)
1. seal arrangement that is used for centrifugal bulging pressure fan comprises and the floating ring of the impeller working shaft Spielpassung of blower fan that it is characterized in that: described floating ring one end axially is connected with sealing seat by pin; Described pin one end and described sealing seat drive fit, the other end and described floating ring Spielpassung; The described floating ring the other end is coated with the baffle plate fixing with described sealing seat, and described baffle plate outer end is embedded with pressure ring; Bottom corresponding to pressure ring on described baffle plate is provided with through hole, passes described through hole and is provided with spring, and described spring one end is fixedlyed connected with described pressure ring, and the spring the other end is connected with the liner that is pressed on the described floating ring.
2. the seal arrangement for centrifugal bulging pressure fan according to claim 1, it is characterized in that: described liner is provided with the guide rod that passes described spring.
3. the seal arrangement for centrifugal bulging pressure fan according to claim 1, it is characterized in that: described baffle plate is connected with described sealing seat by screw.
4. the seal arrangement for centrifugal bulging pressure fan according to claim 1, it is characterized in that: described spring and described pin are on same axis.
5. the seal arrangement for centrifugal bulging pressure fan according to claim 1, it is characterized in that: described sealing seat periphery is provided with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320095486 CN203214399U (en) | 2013-03-01 | 2013-03-01 | Sealing device for centrifugal type blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320095486 CN203214399U (en) | 2013-03-01 | 2013-03-01 | Sealing device for centrifugal type blower fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214399U true CN203214399U (en) | 2013-09-25 |
Family
ID=49203943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320095486 Expired - Fee Related CN203214399U (en) | 2013-03-01 | 2013-03-01 | Sealing device for centrifugal type blower fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214399U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100564A (en) * | 2014-07-14 | 2014-10-15 | 宁波浙成科技咨询有限公司 | Fan sealing member |
| CN111664113A (en) * | 2020-06-18 | 2020-09-15 | 南京千里行测控技术有限公司 | Environment-friendly centrifugal blower body sealing device |
| CN113074134A (en) * | 2021-03-25 | 2021-07-06 | 江苏泰隆风机制造有限公司 | Sealing device between centrifugal fan casing and shaft |
-
2013
- 2013-03-01 CN CN 201320095486 patent/CN203214399U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100564A (en) * | 2014-07-14 | 2014-10-15 | 宁波浙成科技咨询有限公司 | Fan sealing member |
| CN111664113A (en) * | 2020-06-18 | 2020-09-15 | 南京千里行测控技术有限公司 | Environment-friendly centrifugal blower body sealing device |
| CN111664113B (en) * | 2020-06-18 | 2022-06-10 | 南京千里行测控技术有限公司 | Environment-friendly centrifugal blower body sealing device |
| CN113074134A (en) * | 2021-03-25 | 2021-07-06 | 江苏泰隆风机制造有限公司 | Sealing device between centrifugal fan casing and shaft |
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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 |
Granted publication date: 20130925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |