CN102359594A - Rotating shaft backflow type seal housing - Google Patents
Rotating shaft backflow type seal housing Download PDFInfo
- Publication number
- CN102359594A CN102359594A CN2011102669365A CN201110266936A CN102359594A CN 102359594 A CN102359594 A CN 102359594A CN 2011102669365 A CN2011102669365 A CN 2011102669365A CN 201110266936 A CN201110266936 A CN 201110266936A CN 102359594 A CN102359594 A CN 102359594A
- Authority
- CN
- China
- Prior art keywords
- running shaft
- wall
- felt
- retaining
- return port
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a rotating shaft backflow type seal housing, which belongs to the fields of rotating shaft sealing components, and aims to solve the problems of high probability of failure, instable performance, difficulty in disassembly and the like existing in the conventional rotating shaft sealing. The seal housing comprises a housing body, wherein the inner wall of the housing body is provided with an annular inner oil retaining wall and an annular outer oil retaining wall; an annular flow guide groove which is formed on the inner wall of the housing body is arranged between the inner oil retaining wall and the outer oil retaining wall; the inner wall of the housing body is radially provided with a radial backflow hole which is communicated with the flow guide groove; and the housing body is axially provided with an axial backflow hole which is communicated with the radial backflow hole. In the seal housing, contact type sealing and non-contact type sealing are integrated to form a multi-stage independent closed sealing; remaining fluid can automatically flow back; external environmental dust and the like can be prevented from entering a device; and the seal housing has the advantages of simple structure, long service life, low manufacturing and use cost and increased working efficiency.
Description
Technical field
The present invention relates to the rotation axis seal field of components, be specially a kind of running shaft return flow type seal casinghousing.
Background technique
The rotation axis seal housing is an indispensable important component part in the mechanical transmission, and all needs input or output the equipment of rotating power, and its running shaft all needs sealing for preventing that lubricant oil from leaking, like the input shaft and the output shaft of retarder, speed changer etc.The mode and the type of rotation axis seal are more, and common rotation axis seal mode has contact seal and noncontact seal, rotary shaft lip seal; Simple in structure because of it, good seal performance is widely used; But, be prone to agingly, rotten to cause the phenomenon of seal failure leakage pollution environment still to exist, and when changing Sealing because of its material is rubber, moulds and so on; Must dismantle the outer pipe fitting on the running shaft, consuming time taking a lot of work directly influences ordinary production.Especially the heave-load device under rugged environment, using, because of receiving the influence of environment, corrosion and other reason cause the external piece difficulty on the running shaft to dismantle maybe and can't dismantle, and bring inconvenience to plant maintenance.
In the rotation axis seal type, spiral sealing is because of receiving the restriction of rotation direction, and can not adapt to needs clockwise and anticlockwise to use Seal of Equipment, and centrifugal seal only is adapted to high-revolving rotary seal; Therefore, though the sealing means of these types all has its special performance advantage, also exist to make the unsatisfied defective of user.
Summary of the invention
In order to overcome the deficiency of easy inefficacy that existing rotation axis seal exists, unstable properties, dismounting difficulty etc.; The present invention aims to provide a kind of running shaft return flow type seal casinghousing, and this running shaft return flow type seal casinghousing is simple in structure, reliable performance; Long service life, wide accommodation.
To achieve these goals; The technological scheme that the present invention adopted is: said running shaft return flow type seal casinghousing comprises the shell body that is sleeved on the running shaft; Its structural feature is; Have the interior retaining You Bi of an annular and the oily wall of outer retaining of an annular on this shell inner body wall, keep off You Bi in this and keep off the annular diversion trench that is provided with out between the oily wall on the shell inner body wall outward; Radially have at least one return port radially that is communicated with said guiding gutter on the said shell inner body wall, axially have at least one the axial return port that is communicated with said radially return port in the said shell body.
By said structure, said in retaining You Bi identical with the preferred diameter of endoporus that keeps off outward oily wall, the oily wall of promptly said inside and outside retaining is identical with radial clearance between the running shaft, has guaranteed running shaft contactless needs that rotatablely move between seal casinghousing.Interior size of keeping off the You Bi and the diameter of bore of the oily wall of outer retaining adds use permission jerk value by the running shaft diameter and stays less than fluid lubrication oil viscosity gap and confirm.Thus; The oily wall of outer retaining blocks running shaft and axially leaks at the fluid lubrication oil reservoir of the moving bonding of transmission housing inward turning transhipment; Utilize the fluid lubrication oil viscosity, oily wall endoporus of retaining and rotation diameter of axle gap have constituted the first road close encapsulation structure less than fluid lubrication oil viscosity clearance channel in the sealing.
Said guiding gutter formation secondary seal sealing configuration between the oily wall of inside and outside retaining, and with in the residual fluid importing of the seepage guiding gutter between first order sealing and the second level sealing, warp is return port, axial return port returning transmission gear inner chamber radially.
The outside of the oily wall of said outer retaining is provided with out the felt groove on the shell inner body wall, and this felt groove has been embedded in felt.The said felt groove outside is provided with felt is fastened on the gland on the shell body.Said felt is preferably the dustproof felt of elongate body; Should embed in the said felt groove of open type by dustproof felt,, constituted the 3rd road close encapsulation that to prevent dust and can antiseepage by the gland location of being fixed in the housing outer end; When changing external sealed, again need not dismantle the outer pipe fitting on the running shaft.
Because the needs of processing technology, the radially return port of often on the shell body, opening is a through hole, and therefore, in order to prevent liquid from radially revealing return port and the auxiliary hole, the plug screw that is equipped with on the said shell body, an end of this plug screw are contained in radially in the return port.
The vertical lower horizontal plane of said guiding gutter is lower than the volume of bore edges in the outer retaining wall, greater than the volume of cavity between oily wall of interior retaining and the running shaft, confirms the diameter of bore and the groove width of guiding gutter with this.
The hole sectional area of said radially return port and axial return port is all long-pending greater than the radial cross section between interior retaining wall and the running shaft.
Said axial return port is aligned with the pod apertures of gear mechanism housing vertical lower through-lumen.
Because said running shaft return flow type seal casinghousing is contained on the gear mechanism housing; The pod apertures that connects the gear mechanism housing inner chamber on said axial return port and the gear mechanism housing is connected, and realizes backflow in the gear mechanism housing inner chamber so that oil gets into through pod apertures through axial return port.
Compared with prior art, the invention has the beneficial effects as follows: the present invention integrates the advantage of contact seal and noncontact seal mode, can not only constitute the multistage independent close encapsulation of multiple mode, and the residual physical efficiency refluxes automatically in transmission cavity; Can prevent effectively in the hybrid seal arrangement of external environment dust and other harmful substance entering; And it is simple in structure; Long service life, reliability is high, and manufacturing cost and use cost is low; Thoroughly solve the difficulty that to dismantle the outer pipe fitting on the running shaft when changing Sealing, improved working efficiency.
Below in conjunction with accompanying drawing and embodiment the present invention is done further elaboration.
Description of drawings
Fig. 1 is a kind of running shaft return flow type of the present invention seal casinghousing embodiment's a structure principle chart;
Fig. 2 is the A-A sectional view of Fig. 1.
In the drawings
The oily wall of retaining in the 1-; The oily wall of the outer retaining of 2-; The 3-guiding gutter; 4-felt groove;
5-is return port radially; The axial return port of 6-; The 7-leather packing; The 8-plug screw;
The 9-felt; The 10-gland; 11-shell body.
Embodiment
A kind of running shaft return flow type seal casinghousing, as illustrated in fig. 1 and 2, it by one be sleeved on monobloc container body 11 on the running shaft be processed in oily wall 1 endoporus of retaining; Oily wall 2 hearts of outer retaining, guiding gutter 3 is at the oily wall of inside and outside retaining 1, between 2, and open type felt groove is positioned at the outer end of the oily wall 2 of outer retaining; Radially return port 5 radially connects guiding gutter 3; Axially return port 6 is positioned inner and radially return port 5 perforations of running shaft return flow type seal casinghousing, and leather packing 7, plug screw 8 are assemblied in radially return port 5 outer ends, are used for stopping up the radially processing technology hole of return port 5; Dustproof felt 9 is that elongate body is in crook embeds open type felt groove 4; Gland 10 is radially positioned in open type felt groove 4 endoporus, compresses felt, is anchored on the outer end of running shaft return flow type seal casinghousing.
The diameter of bore of the oily wall 1,2 of said inside and outside retaining is preferably identical; Its aperture equals the running shaft diameter and adds running shaft rotation and allow jerk value to add less than fluid lubrication oil viscosity gap; Its principle is: the quantity of liquid lube layer that the external part rotation adheres in the running shaft is blocked in the oily wall of interior retaining 1 the inner; Utilize the clearance channel of fluid lubrication oil viscosity sealing less than the fluid lubrication oil viscosity; Promptly sealed the fluid lubrication oil reservoir that the running shaft motion adheres to, running shaft is turned round in the clearance space that not interfered by oily wall 1,2 endoporus of inside and outside retaining.
Said guiding gutter 3 is located at the oily wall of inside and outside retaining 1, between 2; Not only constitute two-stage retaining oil seal structure; And with in the remaining fluid lubricant oil lead-in groove through return port radially 5 and axial return port 6, flow back to the cabinets cavity oil sump automatically, guiding gutter 3 vertical lower horizontal planes are lower than the volume of bore edges in the oily wall 1,2 of inside and outside retaining; Must be greater than the cavity volume between oily wall 1 of interior retaining and the running shaft, and come to confirm the diameter and the groove width of guiding gutter 3 thus.
The radial cross section of said radially return port 5 and axial return port 6 is long-pending must be greater than the radial clearance sectional area between oily wall 1 of interior retaining and the running shaft, and axially the aperture of return port 6 aligns the pod apertures that outer end, gear mechanism housing below connects the gear mechanism housing inner chamber.
As shown in Figure 1, circumferentially have 6 attachment holes on the said shell body 11.
Its dust and other harmful substance that can block in the external environment of said dustproof felt 9 gets in the running shaft return flow type seal casinghousing; Can block the residual fluid of outside seepage again; Constituted the three seals of inner and outer sealing; When the sealing part abrasion inefficacy needs to change, untie gland 10 and change Sealing very easily, thoroughly solved the difficulty that must dismantle external piece on the running shaft when changing Sealing.
The content that the foregoing description is illustrated is to be understood that to these embodiments and only is used to be illustrated more clearly in the present invention; And be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Claims (8)
1. running shaft return flow type seal casinghousing; Comprise the shell body (11) that is sleeved on the running shaft; It is characterized in that; Have the oily wall of interior retaining (1) of an annular and the oily wall of outer retaining (2) of an annular on this shell body (11) inwall, be provided with out the annular diversion trench (3) on shell body (11) inwall between retaining oily wall (1) and the outer oily wall of retaining (2) in this; Radially have at least one return port (5) radially that is communicated with said guiding gutter (3) on said shell body (11) inwall, axially have at least one the axial return port (6) that is communicated with said radially return port (5) in the said shell body (11).
2. running shaft return flow type seal casinghousing according to claim 1 is characterized in that, the outside of the said outer oily wall of retaining (2) is provided with out the felt groove (4) on shell body (11) inwall, and this felt groove (4) has been embedded in felt (9).
3. running shaft return flow type seal casinghousing according to claim 1 is characterized in that, said felt groove (4) outside is provided with felt (9) is fastened on the gland (10) on the shell body (11).
4. running shaft return flow type seal casinghousing according to claim 1 is characterized in that, the plug screw (8) that prevents that liquid from revealing from return port (5) radially is housed on the said shell body (11), and an end of this plug screw (8) is contained in radially in the return port (5).
5. running shaft return flow type seal casinghousing according to claim 1 is characterized in that, said felt (9) is the dustproof felt (9) of elongate body, and this dustproof felt (9) embeds in the said felt groove (4) of open type.
6. according to the described running shaft return flow type of one of claim 1 ~ 5 seal casinghousing; It is characterized in that; The vertical lower horizontal plane of said guiding gutter (3) is lower than the volume of the interior bore edges of interior retaining wall (1), greater than the volume of cavity between oily wall of interior retaining (1) and the running shaft.
7. according to the described running shaft return flow type of one of claim 1 ~ 5 seal casinghousing, it is characterized in that the hole sectional area of said radially return port (5) and axial return port (6) is all long-pending greater than the radial cross section between interior retaining wall (1) and the running shaft.
8. according to the described running shaft return flow type of one of claim 1 ~ 5 seal casinghousing, it is characterized in that the pod apertures that connects the gear mechanism housing inner chamber on said axial return port (6) and the gear mechanism housing is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102669365A CN102359594A (en) | 2011-09-09 | 2011-09-09 | Rotating shaft backflow type seal housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102669365A CN102359594A (en) | 2011-09-09 | 2011-09-09 | Rotating shaft backflow type seal housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102359594A true CN102359594A (en) | 2012-02-22 |
Family
ID=45584961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102669365A Pending CN102359594A (en) | 2011-09-09 | 2011-09-09 | Rotating shaft backflow type seal housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102359594A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425673A (en) * | 2011-12-09 | 2012-04-25 | 重庆潍柴发动机厂 | Oil collection ring for rotation shaft |
| CN102700536A (en) * | 2012-03-12 | 2012-10-03 | 芜湖盛力科技股份有限公司 | Air booster pump of braking system of engineering machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2276094Y (en) * | 1997-03-11 | 1998-03-11 | 齐崇阁 | Punching end cap pressureless sealing device for transmission machinery |
| CN1806139A (en) * | 2003-10-29 | 2006-07-19 | 株式会社小松制作所 | Non-contact oil seal mechanism for rotating shaft |
| CN200943706Y (en) * | 2006-08-28 | 2007-09-05 | 青岛海力威密封有限公司 | Combined refluence oil seal |
| CN202228679U (en) * | 2011-09-09 | 2012-05-23 | 湖南远扬煤机制造有限公司 | Return-flow type seal casing of rotary shaft |
-
2011
- 2011-09-09 CN CN2011102669365A patent/CN102359594A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2276094Y (en) * | 1997-03-11 | 1998-03-11 | 齐崇阁 | Punching end cap pressureless sealing device for transmission machinery |
| CN1806139A (en) * | 2003-10-29 | 2006-07-19 | 株式会社小松制作所 | Non-contact oil seal mechanism for rotating shaft |
| CN200943706Y (en) * | 2006-08-28 | 2007-09-05 | 青岛海力威密封有限公司 | Combined refluence oil seal |
| CN202228679U (en) * | 2011-09-09 | 2012-05-23 | 湖南远扬煤机制造有限公司 | Return-flow type seal casing of rotary shaft |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425673A (en) * | 2011-12-09 | 2012-04-25 | 重庆潍柴发动机厂 | Oil collection ring for rotation shaft |
| CN102425673B (en) * | 2011-12-09 | 2014-05-07 | 重庆潍柴发动机厂 | Oil collection ring for rotation shaft |
| CN102700536A (en) * | 2012-03-12 | 2012-10-03 | 芜湖盛力科技股份有限公司 | Air booster pump of braking system of engineering machine |
| CN102700536B (en) * | 2012-03-12 | 2015-04-22 | 芜湖盛力科技股份有限公司 | Air booster pump of braking system of engineering machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102954194B (en) | Railway vehicle traveling gearbox sealing structure | |
| CN202228679U (en) | Return-flow type seal casing of rotary shaft | |
| CN102782374A (en) | Arrangement for contactlessly sealing off a rotatably mounted shaft from a housing, and gearing | |
| CN101158403B (en) | Step-up gear box shaft seal | |
| CN102359594A (en) | Rotating shaft backflow type seal housing | |
| CN201544345U (en) | Shaft end sealing structure and concrete mixer with shaft end sealing structure | |
| CN206280387U (en) | The labyrinth oil-sealing arrangement of High-temperature Magnetic Pump bearing housing | |
| CN102927057A (en) | Cooling structure of mechanical seal of centrifugal pump | |
| CN102927014A (en) | Self-cooling centrifugal pump | |
| CN209349960U (en) | A kind of Lathe Spindle Box primary shaft belt pulley sealing structure | |
| CN205154962U (en) | Hydrodynamic clutch | |
| CN207715569U (en) | A kind of bearing block with dirt-proof boot | |
| CN102868248A (en) | Anti-seepage structure of pump motor bearing | |
| CN109931488A (en) | A kind of lubricating oil pump being avoided that inordinate wear | |
| CN213361038U (en) | Speed reducer sealing structure | |
| CN205064598U (en) | A bearing assembly and reclaimer for level wheel | |
| CN201666377U (en) | Oil seal arranged between gear case body and shaft | |
| CN208885924U (en) | A kind of connection sealing device of transmission case body and transmission shaft | |
| CN206377276U (en) | A kind of shaft sealing device | |
| CN209539554U (en) | A kind of oil free screw compressor support end structure | |
| CN201636326U (en) | Centrifugal lossless sealing structure | |
| CN203348318U (en) | Bearing component for vertical pump | |
| CN204372178U (en) | A kind of oil sealing with double-layer sealing structure | |
| CN106439035B (en) | A kind of shaft sealing device | |
| CN109210176A (en) | A kind of connection structure of transmission case body and transmission shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120222 |