CN202348753U - Novel sealing device for fan bearing box - Google Patents
Novel sealing device for fan bearing box Download PDFInfo
- Publication number
- CN202348753U CN202348753U CN2011204063529U CN201120406352U CN202348753U CN 202348753 U CN202348753 U CN 202348753U CN 2011204063529 U CN2011204063529 U CN 2011204063529U CN 201120406352 U CN201120406352 U CN 201120406352U CN 202348753 U CN202348753 U CN 202348753U
- Authority
- CN
- China
- Prior art keywords
- side cover
- bearing box
- round nut
- oil
- bearing
- Prior art date
- 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 novel sealing device for a fan bearing box. The novel sealing device for the fan bearing box comprises a bearing box body (1) and a main shaft (2) and is characterized in that the main shaft (2) is provided with a round nut (6); a bearing (3) is locked by the right end of the round nut (6); the left end of the round nut (6) is embedded into a side cover groove (9) on a side cover (4); and an inner bore of the side cover (4) is provided with a return chute (10). The novel sealing device for the fan bearing box not only is good in tightness and long in service life but also is compact in structure, is simple in manufacturing and installation process and is easy to implement, and is capable of effectively solving the problems that a traditional fan bearing box is low in airtightness, is complicated in structure, is difficult in installation and the like.
Description
Technical field
The utility model relates to the blower fan field, is a kind of shaft end seal device that is used for the fan bearing case.
Background technique
The shaft end seal that on the bearing housing of ventilator, induced draught fan and part blower, uses has following several kinds of situation: the first adopts felt to seal; Felt is installed in the side cover of bearing housing; Utilizing felt to intercept lubricant oil leaks; The long-time immersion oil of felt, following the string causes seal failure; It two is to adopt the lip rubber seal circle to seal, and this kind sealing is high to the main shaft required precision, and the linear velocity of sealing part axle generally is not more than 15m/s, and is inapplicable on the high blower fan of some rotating speed, and changes difficulty behind the sealing wear; It three is on the basis of one of which, gives on the side cover of bearing housing and is provided with spill port and disc, utilizes disc that most of lubricant oil is got rid of the oil return pond; A small amount of outwards lubricant oil of earial drainage draws the oil return pond through spill port; Though sealing effect is better, because installing space is little, the difficult installation of disc; Even under the condition of extension shaft not no enough installing spaces, axial dimension also is difficult to control; It four is to adopt spiral seal, utilizes the deboost of screw thread that lubricant oil is sent back to, but will distinguish left and right sides rotation direction, otherwise can cause serious leakage, and structure is comparatively complicated, uses inconvenience.
Summary of the invention
The purpose of the utility model is to address the above problem and is not enough, and a kind of good airproof performance, compact structure are provided, and technology and novel fan Seal in Bearing Box device simple in structure.
The utility model is achieved in that a kind of novel fan Seal in Bearing Box device; Comprise bearing housing (1) and main shaft (2); It is characterized in that: main shaft (2) is provided with round nut (6); The right-hand member of round nut (6) is with bearing (3) locking, and left end embeds in the side cover groove (9) on the side cover (4), and side cover (4) endoporus is provided with oil-return groove (10).
Said side cover groove (9) is complementary with round nut (6), and simultaneously, round nut (6) is locked bearing (3) again.
Be provided with felt seal ring (7) in the said side cover (4).
Said felt seal ring (7) is pressed in the endoporus of side cover (4) with gland (5).
Said oil-return groove (10) has four roads and is interconnected, and wherein outermost one oil-return groove cavity offers spill port (8) greatly and in its underpart, and spill port (8) communicates with the bearing housing oil sump.
The beneficial effect of the utility model is: the utility model adopts does not have the wearing and tearing design concept; Under the situation that strengthens installing space; Through the plain bearing stripped nut is transformed; And the side cover improvement to matching with it, the centrifugal force that round nut produces when rotated flows back to the bearing housing oil sump after lubricant oil is thrown away, and round nut and side cover are kept apart the main shaft of side cover end and the lubricant oil that splashes and can directly be splashed on the main shaft; The side cover groove forms oil film seal when rotating with the little Spielpassung of round nut, prevents that lubricant oil from leaking between main shaft and side cover.Simultaneously, the lubricant oil that passes side cover groove place on a small quantity makes lubricant oil flow back to the bearing housing oil sump through oil-return groove and the backflow effect of spill port and the oil-blocking action of felt seal ring on the side cover endoporus, plays good sealing effect.The utility model is good airproof performance not only, long service life, and also compact structure, manufacturing and mounting process are simple, realization easily, efficiently solve problems such as existing fan bearing case sealing is poor, complex structure, difficult installation.
Description of drawings
Fig. 1 is the utility model structural representation;
Among the figure: the 1-bearing housing; The 2-main shaft; The 3-bearing; The 4-side cover; The 5-gland; The 6-round nut; 7-felt seal ring; The 8-spill port; 9-side cover groove; The 10-oil-return groove.
Embodiment
Below in conjunction with accompanying drawing the principle and the characteristic of the utility model are described, institute gives an actual example and only is used to explain the utility model, is not the scope that is used to limit the utility model.
Embodiment 1: see Fig. 1, a kind of novel fan Seal in Bearing Box device comprises bearing housing 1 and main shaft 2; It is characterized in that: main shaft 2 is provided with round nut 6; The right-hand member of round nut 6 is with bearing 3 lockings, and left end embeds in the side cover groove 9 on the side cover 4, and side cover 4 endoporus are provided with oil-return groove 10.
Said side cover groove 9 is complementary with round nut 6, and simultaneously, round nut 6 is locked bearing 3 again.
Be provided with felt seal ring 7 in the said side cover 4.
Said felt seal ring 7 usefulness glands 5 are pressed in the endoporus of side cover 4.
Said oil-return groove 10 has four roads and is interconnected, and wherein outermost one oil-return groove cavity offers spill port 8 greatly and in its underpart, and spill port 8 communicates with the bearing housing oil sump.
During the utility model work; Main shaft 2 drives bearing 3, round nut 6 high speed rotating; The lubricant oil that takes up during bearing 3 high speed rotating can be splashed on the round nut 6; Together rotate with main shaft 2 because round nut 6 adopts to be threaded to be fixed on the main shaft 2, the centrifugal force that produces during round nut 6 rotations will be splashed to and flow back to the bearing housing oil sump after lubricant oil on it throws away, and round nut 6 and side cover 4 are kept apart the main shaft of side cover 4 ends and the lubricant oil that splashes; Significantly reduced lubricant oil flowing to side cover 4 lateral direction; Form oil film seal when side cover groove 9 rotates with the little Spielpassung of round nut 6 simultaneously, reduced leaking of lubricant oil again, the lubricant oil that passes side cover groove 9 places on a small quantity can flow back to oil sump through the spill port 8 of oil-return groove on side cover 4 endoporus 10 and oil-return groove 10 bottoms.
Round nut has locking bearing and the dual functions that gets rid of oil.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. novel fan Seal in Bearing Box device; Comprise bearing housing (1) and main shaft (2); It is characterized in that: main shaft (2) is provided with round nut (6); The right-hand member of round nut (6) is with bearing (3) locking, and left end embeds in the side cover groove (9) on the side cover (4), and side cover (4) endoporus is provided with oil-return groove (10).
2. a kind of novel fan Seal in Bearing Box device as claimed in claim 1 is characterized in that said side cover groove (9) and round nut (6) are complementary, and simultaneously, round nut (6) is locked bearing (3) again.
3. a kind of novel fan Seal in Bearing Box device as claimed in claim 1 is characterized in that being provided with in the said side cover (4) felt seal ring (7).
4. a kind of novel fan Seal in Bearing Box device as claimed in claim 3 is characterized in that said felt seal ring (7) is pressed in the endoporus of side cover (4) with gland (5).
5. a kind of novel fan Seal in Bearing Box device as claimed in claim 1; It is characterized in that said oil-return groove (10) has four roads and is interconnected; Wherein outermost one oil-return groove cavity offers spill port (8) greatly and in its underpart, and spill port (8) communicates with the bearing housing oil sump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204063529U CN202348753U (en) | 2011-10-24 | 2011-10-24 | Novel sealing device for fan bearing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204063529U CN202348753U (en) | 2011-10-24 | 2011-10-24 | Novel sealing device for fan bearing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348753U true CN202348753U (en) | 2012-07-25 |
Family
ID=46537761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204063529U Expired - Fee Related CN202348753U (en) | 2011-10-24 | 2011-10-24 | Novel sealing device for fan bearing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348753U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867483A (en) * | 2012-12-14 | 2014-06-18 | 上海梅山钢铁股份有限公司 | Fan oil sealing structure |
-
2011
- 2011-10-24 CN CN2011204063529U patent/CN202348753U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867483A (en) * | 2012-12-14 | 2014-06-18 | 上海梅山钢铁股份有限公司 | Fan oil sealing structure |
| CN103867483B (en) * | 2012-12-14 | 2016-06-29 | 上海梅山钢铁股份有限公司 | Blower fan oil seal structure |
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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: 20120725 Termination date: 20131024 |