CN202510412U - Gas sealing device of main shaft of fan - Google Patents
Gas sealing device of main shaft of fan Download PDFInfo
- Publication number
- CN202510412U CN202510412U CN2012201353505U CN201220135350U CN202510412U CN 202510412 U CN202510412 U CN 202510412U CN 2012201353505 U CN2012201353505 U CN 2012201353505U CN 201220135350 U CN201220135350 U CN 201220135350U CN 202510412 U CN202510412 U CN 202510412U
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- CN
- China
- Prior art keywords
- main shaft
- blower fan
- gas
- joint
- fan
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- 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 relates to a gas sealing device of a main shaft of a fan. The gas sealing device comprises a corrugated section sleeved outside the main shaft, one end of the corrugated section is connected with a back side panel of the fan in a sealing mode, and the other end of the corrugated section is connected with a bearing seat in a sealing mode. The corrugated section is provided with a nitrogen interface which is connected with a nitrogen source, and the gas pressure of the nitrogen source is not lower than the pressure generated by the transmitting of the gas by the fan. The gas sealing device is applied to a high temperature centrifugal explosion-proof type fan, is simple in structure, low in cost, long in service life and simple in maintenance. In addition, the main shaft place which is used in a prior high temperature centrifugal fan is slightly improved, and thus the reliable sealing can be achieved.
Description
Technical field
The utility model relates to the gas sealing mechanism of main shaft in the centrifugal explosion-proof type blower fan of a kind of high temperature.
Background technique
The present employed galvanized wire fast cold explosion-proof fan that circulates, mechanical seal or graphite grazing are generally adopted in the sealing at the main shaft place of high speed rotating, be difficult to guarantee that the gas of carrying does not have a little and reveals, and the working life of Sealing are very short, maintenance difficult.
The model utility content
The utility model technical problem to be solved is: the gas sealing mechanism that main shaft in a kind of blower fan that seals reliable, long service life is provided.
For addressing the above problem; The technological scheme that the utility model adopts is: the gas sealing mechanism of main shaft in the blower fan comprises being sleeved on the outside ripple joint of main shaft that one end of ripple joint is tightly connected with the blower fan back side panel mutually; The other end of ripple joint is tightly connected with bearing support mutually; Said ripple joint is provided with nitrogen interface, and nitrogen interface connects source nitrogen, and the gas pressure of source nitrogen is not less than the pressure of blower fan conveying gas.
The structure that is tightly connected between said ripple joint and the bearing support is: be connected with bearing (ball) cover on the bearing support, the end of ripple joint is tightly connected with bearing (ball) cover mutually, and the joint that bearing (ball) cover is sleeved on main shaft outside and bearing (ball) cover and main shaft is provided with seal ring.
The structure that is tightly connected between said ripple joint and the blower fan back side panel is: be connected with sealing seat on the blower fan back side panel, the end of ripple joint is connected with sealing seat, and the joint that sealed socket sleeve is contained in main shaft outside and sealing seat and main shaft is provided with asbestos packing.
The beneficial effect of the utility model is: the gas sealing mechanism of main shaft in the above-mentioned blower fan; It is simple in structure, with low cost; The main shaft place improves slightly in present employed high temperature centrifugal blower, just can realize sealing reliably, and long service life, easy to maintenance.
Description of drawings
Fig. 1 is the sectional structure schematic representation of the utility model;
Among the figure: 1, main shaft, 2, ripple joint, 3, the blower fan back side panel, 4, bearing support, 5, nitrogen interface, 6, bearing (ball) cover, 7, seal ring, 8, sealing seat, 9, asbestos packing.
Embodiment
Through specific embodiment the gas sealing mechanism of main shaft in the utility model blower fan is done further to describe in detail below.
As shown in Figure 1; The gas sealing mechanism of main shaft in the blower fan comprises that being sleeved on main shaft 1 outside ripple saves 2, and an end of ripple joint 2 is tightly connected with blower fan back side panel 3 mutually; The other end of ripple joint 2 is tightly connected with bearing support 4 mutually; Said ripple joint 2 is provided with nitrogen interface 5, and nitrogen interface 5 connects the source nitrogen (not shown), and the gas pressure of source nitrogen is not less than the pressure of blower fan conveying gas.
As preferred version; The structure that is tightly connected between said ripple joint 2 and the bearing support 4 is: be connected with bearing (ball) cover 6 on the bearing support 4, the end of ripple joint 2 is tightly connected with bearing (ball) cover 6 mutually, and the joint that bearing (ball) cover 6 is sleeved on main shaft 1 outside and bearing (ball) cover 6 and main shaft 1 is provided with seal ring 7; Be provided with two seal rings 7 in the present embodiment; Make sealing effect better, prevent to save the leakage of the nitrogen of 2 inputs, also can stop bearing place lubricating grease to overflow simultaneously from ripple.
As preferred version; The structure that is tightly connected between said ripple joint 2 and the blower fan back side panel 3 is: be connected with sealing seat 8 on the blower fan back side panel 3; The end of ripple joint 2 is connected with sealing seat 8, and the joint that sealing seat 8 is sleeved on main shaft 1 outside and sealing seat 8 and main shaft 1 is provided with asbestos packing 9.
The gas sealing mechanism of main shaft in the above-mentioned blower fan; Bearing (ball) cover 6 and seal ring 7, blower fan back side panel 3 and asbestos packing 9, the ripple joint 2 common channel of nitrogen of forming; The nitrogen that feeds is because gas pressure is higher than blower fan conveying gas pressure; So only allow nitrogen to get into blower fan system, the high-temperature gas of not allowing blower fan to carry leaks, thereby realize hermetic seal; The normal temperature nitrogen that pours simultaneously also can reduce the conduction heat on the main shaft 1, guarantees the normal operation of bearing.
The above embodiments are the principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not is used to limit the utility model; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, these all belong to the protection domain of the utility model.
Claims (3)
1. the gas sealing mechanism of main shaft in the blower fan; It is characterized in that: comprise being sleeved on the outside ripple joint of main shaft; One end of ripple joint is tightly connected with the blower fan back side panel mutually, and the other end of ripple joint is tightly connected with bearing support mutually, and said ripple joint is provided with nitrogen interface; Nitrogen interface connects source nitrogen, and the gas pressure of source nitrogen is not less than the pressure of blower fan conveying gas.
2. the gas sealing mechanism of main shaft in the blower fan according to claim 1; It is characterized in that: the structure that is tightly connected between said ripple joint and the bearing support is: be connected with bearing (ball) cover on the bearing support; The end of ripple joint is tightly connected with bearing (ball) cover mutually, and the joint that bearing (ball) cover is sleeved on main shaft outside and bearing (ball) cover and main shaft is provided with seal ring.
3. the gas sealing mechanism of main shaft in the blower fan according to claim 1 and 2; It is characterized in that: the structure that is tightly connected between said ripple joint and the blower fan back side panel is: be connected with sealing seat on the blower fan back side panel; The end of ripple joint is connected with sealing seat, and the joint that sealed socket sleeve is contained in main shaft outside and sealing seat and main shaft is provided with asbestos packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201353505U CN202510412U (en) | 2012-04-01 | 2012-04-01 | Gas sealing device of main shaft of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201353505U CN202510412U (en) | 2012-04-01 | 2012-04-01 | Gas sealing device of main shaft of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202510412U true CN202510412U (en) | 2012-10-31 |
Family
ID=47062902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201353505U Expired - Fee Related CN202510412U (en) | 2012-04-01 | 2012-04-01 | Gas sealing device of main shaft of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202510412U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619776A (en) * | 2012-04-01 | 2012-08-01 | 张家港市东丰特种风机有限公司 | Air sealing device for main shaft in fan |
| CN106151286A (en) * | 2016-08-30 | 2016-11-23 | 无锡市兴盛环保设备有限公司 | A kind of tight mechanism protecting bearing chamber |
-
2012
- 2012-04-01 CN CN2012201353505U patent/CN202510412U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619776A (en) * | 2012-04-01 | 2012-08-01 | 张家港市东丰特种风机有限公司 | Air sealing device for main shaft in fan |
| CN106151286A (en) * | 2016-08-30 | 2016-11-23 | 无锡市兴盛环保设备有限公司 | A kind of tight mechanism protecting bearing chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20140401 |