CN206290713U - A kind of leading-type oil mist sealing device for bidirectional rotation engine - Google Patents
A kind of leading-type oil mist sealing device for bidirectional rotation engine Download PDFInfo
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- CN206290713U CN206290713U CN201621394928.3U CN201621394928U CN206290713U CN 206290713 U CN206290713 U CN 206290713U CN 201621394928 U CN201621394928 U CN 201621394928U CN 206290713 U CN206290713 U CN 206290713U
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- oil
- sealing
- sealing screw
- mist
- rotating shaft
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Abstract
The utility model discloses a kind of leading-type oil mist sealing device for bidirectional rotation engine, solving slit seal mist of oil in the prior art, to overflow big, contact seal easy to wear with heating, forced-ventilated mist of oil be difficult to oil groove air pressure equalisation, cause the shortcoming of seal failure.A kind of leading-type oil mist sealing device for bidirectional rotation engine, rotating shaft in itself that have including engine and the around the shaft oil groove of a week, the oil groove is provided with closure, and the closure includes sealed support and the first sealing screw and the second sealing screw that are arranged in sealed support；First sealing screw and the second sealing screw are respectively equipped with oppositely oriented thread near the face of rotating shaft；First sealing screw, the second sealing screw, the gap communication seals between cog oil spill pipe between rotating shaft and sealed support, oil groove communication seals lid oil spill pipe.By above-mentioned technical proposal, the problems of the prior art just can be well solved.
Description
Technical field
The utility model is applied to sliding bearing technical field, specifically relates to a kind of oil lubrication sliding bearing leading-type
Oil mist sealing device.
Background technology
On vertical rotating motor, bearing oil groove contains lubricating oil, for lubricating guide bearing or thrust bearing.Motor revolves
Turn, bearing working simultaneously stirs oil flowing in oil groove, so as to form mist of oil in oil groove.
Under normal circumstances, bearing oil groove is provided with closure, to prevent mist of oil in oil groove from overflowing, it is to avoid pollution motor and ring
Border.Slit seal or servo-actuated contact seal are taken in existing sealing.
A kind of typical structure of slit seal is labyrinth sealing, and a few grooves (or groove is outputed by sealing surface
The soft high-abrasive material of interior filling), resistance during increasing mist of oil by seal clearance and reach sealing effectiveness, referring to《Water wheels are sent out
Design of electrical motor and calculating》, Section six of chapter 5.This structure has certain effect to sealing, but mist of oil overflows greatly.
As a kind of improved form of slit seal, contact seal is servo-actuated（The patent No. 94109382.4：Prevent oil,
Water, hydrogen leakage mechanism）Arise at the historic moment.This structural sealant uses high-abrasive material, and sealing block back is provided with spring, will be close
Envelope block pressure is on the rotary shaft.Sealing and between centers gapless when axle is rotated, it is ensured that overflowed without mist of oil.But in actual motion, particularly
Random groups rotating speed is raised, a large amount of failures of sealing.One is the reason for important, when axle moving surface is too high with the quiet face relative velocity of sealing
When, sealing wear is quickly increased, and is ultimately resulted in seal clearance and is expanded and fail.Also there is contact surface friction in this contact seal
The shortcoming of heating, once occurred causing because frictional heating amount is excessive hot jacket rotor expansion to cause the major accident for coming off.
Another seal en-hancement mode is the outer increase oil pumping mist device in addition to clearance seal or Follow-up seal is provided with, its
Thinking is the mist of oil pumped that will gather in oil groove, and after filter is filtered, oil flows back to oil groove, and gas enters air.
Because air pressure change is big, it is difficult to grasp, and there is pressure power, it is not excessive suction capactity to cause, and pressure forms mist of oil spilling
It is exactly excessively weak suction capactity, does not reach swabbing action, it is invalid to seal.
Utility model content
The purpose of this utility model is the shortcoming for overcoming above-mentioned prior art, extracted by lot of experiments
Kind for bidirectional rotation engine leading-type oil mist sealing device, with the thinking of conventional seals " stifled " conversely, its core thinking
It, at " thin " and " leading ", is application of the thinking in sealing of harnessing the river to be.
The utility model is achieved through the following technical solutions：
A kind of leading-type oil mist sealing device for bidirectional rotation engine, including the rotating shaft that has of engine in itself and around
The oil groove of rotating shaft one week, the oil groove is provided with closure, and the closure includes sealed support and is arranged in sealed support
The first sealing screw and the second sealing screw；First sealing screw and the second sealing screw are respectively equipped with rotation near the face of rotating shaft
To opposite thread；First sealing screw, the second sealing screw, the seal clearance communication seals between rotating shaft and sealed support
Between cog oil spill pipe, oil groove communication seals lid oil spill pipe.
Further, the closure oil spill pipe, sealing between cog oil spill pipe are all communicated with oil sump tank.
Further, oil groove and the oil pick-up tube connection connected with oil sump tank, oil pick-up tube are provided with oil well pump.
Specifically, highly different upper through holes and lower through-hole are provided with the sealed support；The upper through hole is arranged on
Between one sealing screw and the second sealing screw, upper through hole is used for communication seals between cog oil spill pipe, and lower through-hole is used for communication seals
Lid oil spill pipe.
Specifically, the first sealing screw and the second sealing screw leaves space between the face of rotating shaft and rotating shaft.
The utility model compared with prior art, has the advantages that：
（1）Structure of the present utility model, using the first sealing screw and the second sealing screw and rotating shaft direction of rotation because
Element realizes the sealing to mist of oil, due to leaving gap between the first sealing screw, the second sealing screw and rotating shaft, also will not be because
Being worn and torn long for use time causes failure, causes the accident.
（2）The utility model structure is novel, effect is protruded, and worth large-scale promotion is used.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of seal clearance.
Wherein, reference is as follows：The sealing screws of 1- first, the sealing screws of 2- second, 3- sealed supports, 4- sealings
Between cog oil spill pipe, 5- closure oil spill pipes, 6- oil pick-up tubes, 7- oil sump tanks, 8- oil well pumps, 9- oil grooves, 10- lubricating oil, 11- turns
Axle, A- seal clearances.
Specific embodiment
The purpose of this utility model is the defect for overcoming prior art, there is provided a kind of dredging for bidirectional rotation engine
Conduction oil mist sealing device, is described in further detail with reference to embodiment to the utility model.
Embodiment
The bearing of engine is provided with oil groove and rotating shaft, and the cavity inside oil groove is moistened as the bearing of storage engine
Sliding lubricating oil 10, is an annular groove, and with the rising of temperature, telling for the bearing being immersed in lubricating oil is rotated to lubrication
Agitation, the effect of impact of oil, can make lubricating oil produce mist of oil.
As shown in Figure 1 and 2, a kind of leading-type oil mist sealing device for bidirectional rotation engine, including closure, turn
Axle 11, oil groove；The closure includes sealed support 3, the first sealing screw 1 and the second sealing screw 2.Due to rotating shaft, bearing
With the relation of the structure of of oil groove 9 itself, first sealing screw, the second sealing screw and sealed support all for around the shaft one circle
Cyclic structure.
Specifically, first sealing screw and the second sealing screw is provided with the ring bodies structure of thread for inner ring surface.
The closure is arranged on oil groove, that is, be arranged between bearing and rotating shaft, and the sealed support inner ring surface is provided with
Conjunction is had second close respectively in two sealing screw grooves of upper and lower parallel distribution, upper and lower distribution two sealing screw grooves
Envelope spiral and the first sealing screw so that the first sealing screw and the second sealing screw are fixed on sealed support.
It is worth especially, it is emphasized that the internal diameter of the sealed support is greater than the first sealing screw and the second sealing screw
Diameter.A part for first sealing screw and the second sealing screw protrudes from the inner ring surface of sealed support.This is due to first
The soft nonmetallic materials that the material of sealing screw and the second sealing screw is used, and the metal material that sealed support is used, such as
Fruit can damage sealing screw and protect expensive rotating shaft because unexpected cause rotating shaft to be contacted with closure.First sealing screw,
Gap is left between two sealing screws and rotating shaft.
On the sealed support, the through hole between two sealing screw grooves is provided with, for communication seals between cog oil spilling
Pipe 4 so that sealing between cog oil spill pipe one end with surrounded by the first helixseal, the second helixseal, sealed support and rotating shaft
Seal clearance A is connected, and the sealing between cog oil spill pipe other end is connected with oil sump tank.
Two through holes are also provided with the sealed support, the one of communication seals lid oil spill pipe 5 and oil pick-up tube 6 is respectively used to
End so that oil groove is connected with closure oil spill pipe and oil pick-up tube.The closure oil spill pipe other end is connected with oil sump tank 7, oil pick-up tube
The other end is connected with oil pumping pump discharge, and oil well pump 8 is connected with oil sump tank bottom.
It is used to the through hole of communication seals between cog oil spill pipe on sealed support be overflow for communication seals lid higher than on sealed support
The through hole of oil pipe；The through hole for being used to connect oil pick-up tube on sealed support is not higher than through hole with communication seals lid oil spill pipe.
It is worth especially, it is emphasized that the annular seal spiral shell that can be formed in one of the first sealing screw and the second sealing screw
Rotation, it is also possible to be the annular seal spiral assembled by several points of valves.
When using, thread is provided with the first helixseal inner ring surface close with axle, on the second helixseal inner ring surface
Also thread is provided with, two threads are oppositely oriented.There is gap between the inner ring surface of helixseal and rotating shaft.
When axle is rotated, oil-bath lubrication oil can be stirred, form mist of oil.
It is worth especially, it is emphasized that the thread rotation direction phase of first sealing screw and the second sealing screw inner ring surface
Instead.
If rotational axis direction is oppositely oriented with the first helixseal helical tooth, due to the viscous effect of mist of oil, rotary shaft
The mist of oil press-in oil groove between seal clearance or backlash can be will be attached to.Oil groove mist of oil pressure rise, mist of oil can be by closure
Oil spill pipe, automatically into oil sump tank, gets off as liquid deposition.Until reaching balance, oil sump tank is overflowed into there is no mist of oil, hereafter
Into the zero spilling working condition that oil sump tank is overflowed into entirely without mist of oil.After axle stops operating, start oil well pump, by oil sump tank
The lubricating oil of deposition draws back oil groove by oil pick-up tube, it is ensured that initial oil level requirement during axle rotation next time.This process, seals between cog
Oil spill pipe oil-free spray is moved.In the present embodiment, seal clearance refers to the installation gap between closure and rotating shaft；Inter-lobe clearance refers to
Gap between one sealing spiral shell spiral and the second sealing screw.
If rotational axis direction is identical with the first helixseal helical tooth rotation direction, due to the viscous effect of mist of oil, rotary shaft
Mist of oil press-in the first helixseal and the second helixseal gap of seal clearance or inter-lobe clearance can be will be attached to.Due to second
Helixseal helical tooth rotation direction is with axle steer conversely, because the viscous effect of mist of oil, it is close that rotary shaft can will be attached to the second spiral
Mist of oil indentation sealing between cog oil spill pipe between the seal clearance of envelope or backlash, into oil sump tank, gets off as liquid deposition.Directly
To balance is reached, oil sump tank is overflowed into there is no mist of oil, then into the zero spilling working condition that oil sump tank is overflowed into entirely without mist of oil.
After axle stops operating, start oil well pump, the lubricating oil that will be deposited in oil sump tank draws back oil groove by oil pick-up tube, it is ensured that axle is next
Initial oil level requirement during rotation.This process, closure oil spill pipe oil-free spray is moved.
In the present embodiment, in addition first sealing screw and the second sealing screw, go back together on sealed support
Can sealed support is first-class to enable to the first sealing screw and the second sealing screw to fix a point other manner using being embedded in.
In the present embodiment, there is gap in inner ring surface and the rotating shaft of sealing screw, when unit is rotated, using fluid viscosity,
By oil gas press-in oil groove present on sealing surface or sealing between cog oil spill pipe, the unnecessary oil of oil groove is introduced into fluid collecting container.
After compressor emergency shutdown, the oil of recovery is drawn back into oil groove with pump, it is to avoid bearing oil starvation when unit plays machine.
Compared with general oil mist sealing, the beneficial effects of the utility model show：
The present embodiment uses technical scheme as " pressure release of helixseal oiling groove ", with following technique effect：
Helixseal is provided with sealed support, using fluid viscosity, mist of oil towards closure oil spill pipe or sealing tooth is forced
Between oil spill pipe flowing；And spillage oil stream is introduced into collection vessel by sealing between cog oil spill pipe and closure oil spill pipe, it is to avoid oil
Groove oil overflows by force from sealing surface.After compressor emergency shutdown, the oil that pump will overflow in collection vessel draws back oil groove, it is to avoid unit plays machine
Bearing oil starvation.When unit is rotated, this sealing means guides in regulation tube runs mist of oil completely, so as to realize completely close
Envelope.With conventional hermetic using closure mode conversely, the utility model is used dredges mode.
Overflowed outwardly conversely, this sealing uses helixseal with normal gap sealing mist of oil, using axle rotation for mist of oil is carried
For power, mist of oil towards closure oil spill pipe or sealing between cog oil spilling Bottomhole pressure is driven；Mist of oil can spill into oil sump tank from close, stop
The oil of spilling can be drawn back oil groove by oil well pump after machine, maintain oil groove oil mass.
Different from trailing type sealing, this sealing, using contactless, is not in sealing wear, and hair caused by friction
Heat, and abrasion causes the damage of axle.
Different from forced-ventilated mist of oil, this sealing uses system automatic balancing air pressure, voluntarily flows, and mist of oil is only in oil groove and oil-collecting
Just flowed during case pressure imbalance.And be that oil-free spray is moved in poised state.Oil replaces stream between oil groove and oil sump tank all the time
It is dynamic, pollute environment without being diffused into outside closure.
According to above-described embodiment, the utility model just can be well realized.What deserves to be explained is, based on said structure design
On the premise of, to solve same technical problem, even if some made on the utility model are without substantial change or profit
Color, the essence of the technical scheme for being used is still as the utility model, therefore it should also be as in protection model of the present utility model
In enclosing.
Claims (4)
1. a kind of leading-type oil mist sealing device for bidirectional rotation engine, including the rotating shaft that engine has in itself（11）With
Around the shaft（11）The oil groove of one week（9）, it is characterised in that the oil groove（9）Closure is provided with, the closure includes sealing
Support（3）Be arranged on sealed support（3）The first interior sealing screw（1）With the second sealing screw（2）；First sealing screw
（1）With the second sealing screw（2）Near rotating shaft（11）Face be respectively equipped with oppositely oriented thread；First sealing screw（1）、
Second sealing screw（2）, rotating shaft（11）With sealed support（3）Between seal clearance communication seals between cog oil spill pipe（4）, oil groove
（9）Communication seals lid oil spill pipe, the closure oil spill pipe, sealing between cog oil spill pipe（4）All it is communicated with oil sump tank（7）.
2. a kind of leading-type oil mist sealing device for bidirectional rotation engine according to claim 1, its feature exists
In oil groove（9）And with oil sump tank（7）The oil pick-up tube of connection（6）Connection, oil pick-up tube（6）It is provided with oil well pump（8）.
3. a kind of leading-type oil mist sealing device for bidirectional rotation engine according to claim 1, its feature exists
In the sealed support（3）On be provided with highly different upper through holes and lower through-hole；The upper through hole is arranged on the first sealing screw
（1）With the second sealing screw（2）Between, upper through hole is used for communication seals between cog oil spill pipe（4）, lower through-hole is for communication seals lid
Oil spill pipe.
4. a kind of leading-type oil mist sealing device for bidirectional rotation engine according to claim 1, its feature exists
In the first sealing screw（1）With the second sealing screw（2）Near rotating shaft（11）Face and rotating shaft（11）Between leave space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621394928.3U CN206290713U (en) | 2016-12-19 | 2016-12-19 | A kind of leading-type oil mist sealing device for bidirectional rotation engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621394928.3U CN206290713U (en) | 2016-12-19 | 2016-12-19 | A kind of leading-type oil mist sealing device for bidirectional rotation engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206290713U true CN206290713U (en) | 2017-06-30 |
Family
ID=59104779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621394928.3U Active CN206290713U (en) | 2016-12-19 | 2016-12-19 | A kind of leading-type oil mist sealing device for bidirectional rotation engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206290713U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167441A (en) * | 2018-02-08 | 2018-06-15 | 张宏伟 | Generator shaft seals and area from absorbing smoke outwards structure |
| CN109780217A (en) * | 2019-03-28 | 2019-05-21 | 重庆华能水电设备制造有限公司 | Clearance-type oil mist prevention sealing cover with air guide structure |
-
2016
- 2016-12-19 CN CN201621394928.3U patent/CN206290713U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167441A (en) * | 2018-02-08 | 2018-06-15 | 张宏伟 | Generator shaft seals and area from absorbing smoke outwards structure |
| CN109780217A (en) * | 2019-03-28 | 2019-05-21 | 重庆华能水电设备制造有限公司 | Clearance-type oil mist prevention sealing cover with air guide structure |
| CN109780217B (en) * | 2019-03-28 | 2024-01-23 | 重庆华能水电设备制造有限公司 | Gap type oil mist preventing sealing cover with air guide structure |
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