CN2596116Y - Sealing device for rotary shaft - Google Patents
Sealing device for rotary shaft Download PDFInfo
- Publication number
- CN2596116Y CN2596116Y CN 02277365 CN02277365U CN2596116Y CN 2596116 Y CN2596116 Y CN 2596116Y CN 02277365 CN02277365 CN 02277365 CN 02277365 U CN02277365 U CN 02277365U CN 2596116 Y CN2596116 Y CN 2596116Y
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- propeller
- sub
- sealing device
- coupling
- rotating shaft
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- Sealing Devices (AREA)
Abstract
The utility model relates to a rotary sealing device for rotating shafts. The connecting position of a drive shaft and a driven shaft uses an axial displacement type shaft coupling. In operation, an auxiliary impeller seat is caused to leave a bearing seat for rotating on a single end face to produce negative pressure in a formed gap zone so as to achieve the purpose of sealing. The rotary sealing device has the advantages of simple structure, low cost, convenient maintenance, long service life and strong reliability, can be widely used in four large fields of industrial reaction kettles, industrial pumps, ship machinery and automobile cooling pumps, and particularly has the value of industrial development.
Description
Technical field
The utility model relates to the seal arrangement of rotating shaft, particularly is applied in the impeller sealing arrangement in the rotating shaft.
Background technique
Rotating shaft sealing adopts mechanical seal usually, and partial vacuum equipment also adopts magnet fluid sealing etc.With the magnet fluid sealing is example, and its friction factor is little, but is not suitable for using in chemical industry department, because it loses its due function easily through can't stand the erosion of chemical mediator.External advanced person's is the rotating sealing device that is applied in band sub-propeller in the pump housing, that adopts is centrifugal and opens as umbrella in rotary course and push sub-propeller open, make sub-propeller leave the bearing support rotation, produce negative pressuren zone, reach sealing purpose at bearing support one end.But, utilize centrifugal to make pushing device, utilize spring to make returning device, make the pump housing interior complicated, increase pump housing internal volume, increase kinetic energy consumption and mechanical loss, also be not easy to safeguard.
Summary of the invention
In order to solve the deficiency of existing rotating sealing device, the utility model adopts a kind of external engaging and disengaging gear to control impeller and more reliable, more economical, longer service life, also be convenient to safeguard.
The technical solution of the utility model is: a parcel diaxon spindle nose and the tape spool coupling 7 to Displacement system is set in driving shaft 8 and driven axle 1 joint, reclining installs a sub-propeller 2 on the driven axle 1 of bearing support 6 single end faces, and bearing support 6 single end faces all are sealing surfaces with sub-propeller 2 wheel seats two corresponding annular end faces.
Described a kind of tape spool is to be screw-thread fit between drive fit and coupling 7 from another root axle to Displacement system and an axle, and the screw-thread fit end of coupling 7 also is provided with return spring 71.
Described another kind of tape spool is coupling 7 from a drive fit to Displacement system and an axle, is two splitting annular slope and cooperate of matching and interlace between the driving shaft 8 in it and driven axle 1 spindle nose, and coupling 7 inner chambers also are provided with return spring 71.Two split between the annular slope and can lay ball 72, make it more flexible.
Described another tape spool to the coupling 7 of Displacement system and an axle be drive fit with another root axle between be that the smooth of the spacing Displacement system of tape guide cooperates, described guide and limit Displacement system is that radial hole 73 is arranged on the coupling 7, it on another root axle that is complementary the arc groove 74 of one section band helical trajectory, between radial hole 73 and the arc groove 74 is that ball 72 is connected, and coupling 7 movable ends also are provided with return spring 71.
The arc groove 74 of described band helical trajectory is the man type of two dimensional development.
Described sub-propeller 2 adopts centrifugal, and one section of bearing support 6 single end face termination are wrapped in by sub-propeller 2 blades.
Described sub-propeller 2 adopts axial flow, and one section of bearing support 6 single end face termination are uncovered cavitys and sub-propeller 2 is wrapped in.
Described sub-propeller 2 adopts mixed-flows, and one section of bearing support 6 single end face termination are wrapped in by sub-propeller 2 blades.Described mixed-flow sub-propeller 2 comprises that blade and axis angle spend to the impeller of 150 degree from 0.
In addition, along bearing support 6 axis inner chambers bearing housing 4, throw-out collar 31 and software sealing material 32 and other composite seal device can be set.
In sum, the rotating sealing device of this rotating shaft is to adopt axial displacement formula coupling at driving shaft and driven axle joint, and the sub-propeller wheel seat that makes in service leaves the rotation of bearing support single end face, produces negative pressure at the interstitial area that forms, and reaches sealing purpose.This rotating sealing device is simple in structure, and is with low cost, easy to maintenance, long service life, and good reliability can be widely used in industrial reaction still, industrial pump, ship machinery, automobile coolant pump four big fields, has commercial development and is worth.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing 1 is first an embodiment's of the present utility model vertical section structure schematic representation.
Accompanying drawing 2 is vertical section structure schematic representation of second embodiment of the present utility model.
Accompanying drawing 4 is vertical section structure schematic representation of the 4th embodiment of the present utility model.
Accompanying drawing 5 is vertical section structure schematic representation of the 5th embodiment of the present utility model.
1-driven axle, 2-sub-propeller, 3-O-ring seal, 31-throw-out collar, 32-software sealing material, 4-bearing housing, 5-guard, 6-bearing support, 61-connecting wall, 7-tape spool are with arc groove, 75-protective-cover type snubber, 8-driving shaft, the 9-rolling bearing of helical trajectory among the figure to coupling, 71-spring, 72-ball, 73-radial hole, the 74-of Displacement system.
Specific embodiments
Embodiment one
Referring to accompanying drawing 1, the described coupling 7 that between driving shaft 8 and driven axle 1, is provided with of present embodiment, with driving shaft 8 in it are drive fits with driven axle 1 between be that spiral cooperates; There is a protective-cover type snubber 75 to be sleeved on the coupling 7, an annular boss is arranged therein on the driven axle 1 by kink, between coupling 7 and driven axle 1 boss two annular end faces, return spring 71 is set, between driving shaft 8 and driven axle 1 spindle nose and between protective-cover type snubber 75 and driven axle 1 boss two annular end faces ball is being set.Reclining installs a centrifugal sub-propeller 2 on the driven axle 1 of bearing support 6 single end faces, and the termination of bearing support 6 single end faces is wrapped in by centrifugal sub-propeller 2 blades; Software sealing material 32 and bearing housing 4 have been set gradually at bearing support 6 axis inner chambers; Bearing housing 4 outstanding bearing support 6 single end faces constitute the stepped shaft termination, and in this a little axially outstanding O-ring seal 3 of suit above termination, one end is near bearing support 6 single end faces, and paste mutually with sub-propeller 2 wheel seat sealing surfaces its other end.Owing to the spiral thrust effect of coupling 7, driven axle 1 is done the axial displacement of trace during operation, and sub-propeller 2 wheel seats leave bearing support 6 single end faces formation gap and rotate, and makes interstitial area produce negative pressure, realizes dynamic seal (packing).After the shutdown, since the reaction force of spring 71, sub-propeller 2 returns, and the O-ring seal 3 between its wheel seat and the bearing support 6 is compacted, realizes static sealing.Accompanying drawing 1 is described to be static situation, takes turns 2 outsides at the specific environment inferior accessory lobe guard 5 can be set, and prevents that mainly large-scale particulate pollutant and fibrous substance are to the infringement of sub-propeller 2 or make guard shield and use.This embodiment is suitable for equipment such as various pumps, still.
Embodiment two
Referring to accompanying drawing 2, the driven axle 1 of the described coupling 7 that is provided with between driving shaft 8 and driven axle 1 of present embodiment in it is that drive fit is that spiral cooperates with driving shaft 8, an annular boss is arranged on the driving shaft 8, between coupling 7 and driving shaft 8 boss two annular end faces, return spring 71 is set; Reclining installs a centrifugal sub-propeller 2 on the driven axle 1 of bearing support 6 single end faces, and one section of bearing support 6 single end face are wrapped in by centrifugal sub-propeller 2 blades, have set gradually bearing housing 4, software sealing material 32 and dihedral throw-out collar 31 at bearing support 6 axis inner chambers.Because driving shaft 8 is given the spiral pulling force of coupling 7, driven axle 1 is done the axial displacement of trace during operation, and sub-propeller 2 wheel seats leave bearing support 6 and form gap and rotation, makes interstitial area produce negative pressure, realizes dynamic seal (packing).After the shutdown, by the reaction force of spring 71, sub-propeller 2 returns, and oppress dihedral throw-out collar 31, software sealing material 32 realization static sealings.Accompanying drawing 2 is described to be dynamic situation.This embodiment is suitable for vacuum equipment and dustproof environment.
Embodiment three
Referring to accompanying drawing 3, the described coupling 7 that is provided with in driving shaft 8 and driven axle 1 joint of present embodiment is a drive fit with driving shaft 1, and between driving shaft 8 and driven axle 1 spindle nose two splitting annular screw inclined plane and cooperate of matching and interlace, split two ball 72 is set between the annular screw inclined plane, coupling 5 inner chambers are provided with return spring 71; Reclining installs an axial flow sub-propeller 2 on the driven axle 1 of bearing support 6 single end faces, and one section of the termination of bearing support 6 single end faces is uncovered cavity and sub-propeller 2 is wrapped in, in bearing support 6 axis cavitys software sealing material 32 and bearing housing 4 is set; Bearing housing 4 projecting shaft bearings 6 inner chambers constitute the stepped shaft termination, O-ring seal 3 of suit on bearing support 6 terminations, this O-ring seal 3 is interior stepped shaft double-ring surface, and its annular small end face is near bearing support 6 single end faces, and its annular large end face pastes mutually with sub-propeller 2 wheel seat sealing surfaces.Owing to the inclined-plane thrust in the coupling 7, driven axle 1 is done the axial displacement of trace during operation, and sub-propeller 2 wheel seats leave bearing support 6 and form also rotation of gaps, make interstitial area produce negative pressure, realize dynamic seal (packing).After the shutdown, since the reaction force of spring 71, sub-propeller 2 returns, and its wheel seat compresses O-ring seal 3, realizes static sealing.Accompanying drawing 3 is described to be static situation, at the uncovered cavity port of specific environment step 6 single end faces a guard 5 can be set.This embodiment is suitable for equipment such as various pumps, still.
Embodiment four
Referring to accompanying drawing 4, described coupling that is provided with between driving shaft 8 and driven axle 17 of present embodiment and the driven axle 1 in it are drive fits, the smooth of the spacing Displacement system of tape guide cooperates between coupling 7 and the driving shaft 8, described guide and limit Displacement system is one group at least, radial hole 73 is arranged on the coupling 7, it on the motor output shaft 8 that is complementary the arc groove 74 of a bit of band helical trajectory, between radial hole 73 and the arc groove 74 is that ball 72 is connected, and is provided with return spring 71 between coupling 7 and driving shaft 8 boss two annular end faces; Driven axle 1 passes the rolling bearing 9 in connecting wall 61 holes, this rolling bearing 9 also can be done a small amount of axial displacement, recline and install an axial flow sub-propeller 2 on the driven axle 1 of bearing support 6 single end faces, axial flow sub-propeller 2 is positioned at the uncovered cavity in bearing support 6 single end face terminations, and sub-propeller 2 wheel seat seal faces are the pit shape.Owing to the spiral tension of coupling 7, driven axle 1 is done the axial displacement of trace during operation, and sub-propeller 2 wheel seats leave bearing support 6 formation gaps and rotate, and make interstitial area produce negative pressure, realize dynamic seal (packing).After the shutdown, because the reaction force of spring 71, and sub-propeller 2 returns, the ring packing end face and bearing support 6 drive fits of sub-propeller 2 wheel seats realize static sealing simultaneously.Accompanying drawing 4 is described to be dynamic situation.This embodiment is suitable for vacuum equipment and dustproof environment.
Embodiment five
Referring to accompanying drawing 5, the described coupling that is provided with between driving shaft 8 and driven axle 17 of present embodiment is drive fits with driving shaft 8, with be that the smooth of the spacing Displacement system of tape guide cooperates between the driven axle 1, described guide and limit Displacement system is that radial hole 73 is arranged on the coupling 7, it on the driven axle 1 that is complementary the arc groove 74 that is the man type band helical trajectory of two dimensional development, between radial hole 73 and the arc groove 74 is that ball 72 is connected, and coupling 7 inner chambers also are provided with return spring 71.Recline and install a mixed-flow sub-propeller 2 on the driven axle 1 of bearing support 6 single end faces, one section of bearing support 6 termination are wrapped in by sub-propeller 2 blades, these bearing support 6 terminations are stepped shaft and a little axially outstanding O-ring seal 3 of top suit, and paste mutually with mixed-flow sub-propeller 2 wheel seat sealing surfaces the exterior edge face of O-ring seal 3, also contains at bearing support 6 axis inner chambers and adorning bearing housing 4 and software sealing material 32.Can realize the axial displacement of any rotation direction during operation, sub-propeller 2 is taken turns cover and is left bearing support 6 formation gaps and rotation, makes interstitial area produce negative pressure, realizes dynamic seal (packing).After the shutdown, because the reaction force of spring 71, and sub-propeller 2 returns, the O-ring seal 3 between sub-propeller 2 wheel seats and the bearing support 6 is compacted, realizes static sealing.Accompanying drawing 5 is described to be static situation, takes turns 2 outsides at the specific environment inferior accessory lobe guard 5 can be set.This embodiment is suitable for equipment such as various pumps, still, especially is suitable for the equipment of two-way rotation and marine rear shaft etc.
Claims (10)
1, the rotating sealing device of rotating shaft, a sub-propeller (2) is arranged in the rotating shaft, it is characterized in that, a parcel diaxon spindle nose and the tape spool coupling (7) to Displacement system is set in driving shaft (8) and driven axle (1) joint, reclining installs a sub-propeller (2) on the driven axle (1) of bearing support (6) single end face, and bearing support (6) single end face is sealing surface with sub-propeller (2) wheel seat two corresponding annular end faces.
2, according to the sealing machine device of the described rotating shaft of claim 1, it is characterized in that axially outstanding O-ring seal (3) of suit on the stepped shaft termination that bearing support (6) single end face constitutes.
3, according to the rotating sealing device of the described rotating shaft of claim 1, it is characterized in that, at sub-propeller (a 2) guard of outer installment (5).
According to the rotating sealing device of the described rotating shaft of claim 1, it is characterized in that 4, coupling (7) is that drive fit and another root axle are screw-thread fit with an axle, and the screw-thread fit end also is provided with return spring (71).
5, according to the rotating sealing device of the described rotating shaft of claim 1, it is characterized in that, coupling (7) is a drive fit with an axle, be two splitting annular slope and cooperate of matching and interlace between driving shaft (8) in it and driven axle (1) spindle nose, coupling (7) inner chamber also is provided with return spring (71).
6, according to the rotating sealing device of the described rotating shaft of claim 1, it is characterized in that, coupling (7) and an axle be drive fit with another root axle between be that the smooth of the spacing Displacement system of tape guide cooperates, described guide and limit Displacement system is that radial hole (73) is arranged on the coupling (7), it on another root axle that is complementary the arc groove (74) of one section band helical trajectory, between radial hole (73) and the arc groove (74) is that ball (72) is connected, and coupling (7) movable end also is provided with return spring (71).
According to the rotating sealing device of the described rotating shaft of claim 6, it is characterized in that 7, the arc groove (74) of band helical trajectory is the man type of two dimensional development.
According to the rotating sealing device of the arbitrary described rotating shaft of claim 1 to 6, it is characterized in that 8, sub-propeller (2) is centrifugal, bearing support (6) one ends are wrapped in by receded disk impeller (2) blade.
According to the rotating sealing device of the arbitrary described rotating shaft of claim 1 to 6, it is characterized in that 9, sub-propeller (2) is an axial flow, bearing support (6) one ends are uncovered cavitys and sub-propeller (2) are wrapped in.
According to the rotating sealing device of the arbitrary described rotating shaft of claim 1 to 7, it is characterized in that 10, sub-propeller (2) is a mixed-flow, bearing support (6) one ends are wrapped in by mixed-flow impeller (2) blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277365 CN2596116Y (en) | 2002-09-29 | 2002-09-29 | Sealing device for rotary shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02277365 CN2596116Y (en) | 2002-09-29 | 2002-09-29 | Sealing device for rotary shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2596116Y true CN2596116Y (en) | 2003-12-31 |
Family
ID=33740989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02277365 Expired - Fee Related CN2596116Y (en) | 2002-09-29 | 2002-09-29 | Sealing device for rotary shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2596116Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045994A (en) * | 2012-12-29 | 2013-04-17 | 中国科学院沈阳科学仪器股份有限公司 | Self-lockable substrate baffle component |
-
2002
- 2002-09-29 CN CN 02277365 patent/CN2596116Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103045994A (en) * | 2012-12-29 | 2013-04-17 | 中国科学院沈阳科学仪器股份有限公司 | Self-lockable substrate baffle component |
| CN103045994B (en) * | 2012-12-29 | 2014-08-06 | 中国科学院沈阳科学仪器股份有限公司 | Self-lockable substrate baffle component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Lu Wuming Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |