CN206299791U - Axle sealing device - Google Patents
Axle sealing device Download PDFInfo
- Publication number
- CN206299791U CN206299791U CN201621328824.2U CN201621328824U CN206299791U CN 206299791 U CN206299791 U CN 206299791U CN 201621328824 U CN201621328824 U CN 201621328824U CN 206299791 U CN206299791 U CN 206299791U
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- China
- Prior art keywords
- bearing
- oil
- shelves
- ball
- cover
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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.)
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- Sealing Of Bearings (AREA)
Abstract
A kind of axle sealing device, is obtained by installing an annulus en plaque oil shelves in the rotary shaft between bearing (ball) cover or conventional seals structure and bearing.Oily shelves both around on the rotating shaft, were fixed on bearing (ball) cover further through some screws and spacing circle.A static pressure chamber is formed by spacing circle between oily shelves and bearing (ball) cover or conventional seals structure.The static pressure chamber has isolated lubricating oil and has been allowed to directly be splashed in existing conventional seals structure, reduces load of the lubricating oil to conventional seals structure.Enter into during the lubricating oil in static pressure chamber returns to hydraulic oil container by the spill port of oily shelves, further reduce the oil pressure in static pressure chamber.This axle sealing device ensure that in the case of the decline of conventional seals structure radial seal ability, seal lip and journal wearing sealing position does not occur leakage of oil.The utility model simple structure, significant sealing affection acts on outstanding, serves the effect got half the result with twice the effort, and effectively prevent rotary shaft leakage of oil problem.
Description
Technical field
The utility model is related to a kind of mechanical rotation shaft seal, and more particularly to one kind prevents pump or fan from rotating
The axle sealing device of shaft extension point seepage lubricating oil.
Background technology
The sealing of conventional pump or fan shaft extending area to lubricating oil typically uses wool felt sealing structure, reinforced seal knot
Structure, labyrinth seal structure.Shortcoming of the pump or fan using above-mentioned conventional seals structure be：Sealing position rotary shaft rotary work
When, because various factors is acted in the case of lubricating oil splash amount is larger, sealing effectiveness is decreased obviously, it is difficult to which guarantee is occurred without oozes
Leakage.Leakage of oil not only influences to carry out production strictly in line with rules and regulations, and catastrophe failure even damage can also be scrapped caused by oil starvation is to equipment.
Utility model content
The purpose of this utility model is to provide a kind of simple structure, can solve conventional seals structure because various factors causes to ooze
Leakage, improves equipment operational reliability and the axle sealing device carried out production strictly in line with rules and regulations.
What the purpose of this utility model was that by.The utility model axle includes the rotation of pump or fan with sealing device
The bearing (ball) cover and conventional seals structure installed on axle and rotary shaft, the utility model axle is with seal feature：
One annulus en plaque oil shelves is installed, oily shelves both led in the structural cavities between bearing (ball) cover or conventional seals structure and bearing
Center ring hole is crossed around on the rotating shaft, is fixed on bearing (ball) cover by some screws further through ring plate, oily shelves and rotary shaft it
Between be provided with radial clearance, be provided with axial spacing between bearing (ball) cover or conventional seals structure, axial spacing constitutes static pressure chamber,
There is a spill port, the static pressure chamber is by the oil return line and Lubricating oil tank at spill port and bearing base below oily shelves
Connection.
The utility model axle sealing device, wherein the oily shelves centre bore is 0.2- with the radial clearance of rotary shaft
0.3mm, oily shelves external diameter is equal with outer race internal diameter, and the screw is positioned at oily shelves and bearing (ball) cover or conventional seals structure
Between part be provided with spacing circle.
The utility model axle sealing device, wherein the oily shelves and bearing (ball) cover or conventional seals of spacing circle setting
Axial spacing is 2-3mm between structure.
The utility model axle sealing device, wherein the oily plate washer thickness 0.5mm..
The utility model axle sealing device difference from prior art is that the utility model axle is with sealing device
Improvement to conventional seals structure technology.Improved mode is turning between bearing (ball) cover or conventional seals structure and bearing
One annulus en plaque oil shelves is installed on moving axis.A static pressure is formed between oily shelves and bearing (ball) cover or conventional seals structure
Chamber.The static pressure chamber has isolated lubricating oil and has been allowed to directly be splashed in existing conventional seals structure, reduces lubricating oil
Load of the liquid to existing conventional seals structure.The lubricating oil for entering into static pressure chamber returns to hydraulic oil by the spill port on oily shelves
In case, the oil pressure in static pressure chamber is further reduced.This axle sealing device ensure that in conventional seals structure radial seal
In the case of ability decline, seal lip and journal wearing, there is no leakage of oil in sealing position.The utility model simple structure,
Effect is outstanding, serves the effect got half the result with twice the effort, and it is a kind of preferable sealing device.
Axle of the present utility model is described further with sealing device below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model axle sealing device.
Specific embodiment
As shown in figure 1, the utility model axle sealing device is that acquisition is improved on the basis of conventional art.This reality
With the new bearing (ball) cover 1 for including being installed in the rotary shaft 3 of pump or fan and rotary shaft 3 and conventional seals structure 2.This axle
It is that a Circular Plate is installed in structural cavities between bearing (ball) cover 1 or conventional seals structure 2 and bearing 7 with sealing device
Sheet oil shelves 4.Oily shelves 4 are both looped around in rotary shaft 3 by center ring hole, and bearing is fixed on by some screws 6 further through ring plate
On end cap 1.Radial clearance A is provided between oily shelves 4 and rotary shaft 3, is provided between bearing (ball) cover 1 or conventional seals structure 2
Axial spacing B, axial spacing B constitute static pressure chamber, and oily shelves 4 have a spill port C below, and the static pressure chamber passes through spill port C
And the oil return line at bearing base is connected with Lubricating oil tank.
In the utility model axle sealing device, the centre bore of oily shelves 4 is 0.2-0.3mm with the radial clearance A of rotary shaft 3,
The external diameter of oily shelves 4 is equal with the bore diameter of outer ring of bearing 7, and screw 6 is between oily shelves 4 and bearing (ball) cover 1 or conventional seals structure 2
Part be provided with spacing circle 5.Between the oily shelves 4 and bearing (ball) cover 1 or conventional seals structure 2 of the setting of spacing circle 5 between axial direction
It is 2-3mm away from B.
In the utility model axle sealing device, the thickness of slab 0.5mm of oily shelves 4.
Certain desulfurization scene, the extending portion of generally existing pump or fan power transmission shaft 3 position leakage of oil problem, maximum oil leak amount reaches every 40
Second one is dripped, and all associated components also not solve problem has been changed during maintenance, is greatly polluted site environment and has been threatened equipment
Safe operation.
Oil leak site inspection, pump rotational vibrations value is the kilter of 1.2mm/s, oil sealing quality, lip dimensional discrepancy, axle
Neck physical dimension deviation, axle surface roughness, oil mass value, spill port and the equal no problem of bearing wear.
Investigation finds repeatedly：Leakage of oil reason is because rotary shaft 3 has a large amount of lubricating oils to be splashed to bearing during rotating
What end cap 1 and the region of conventional seals structure 2 were caused.
According to failure cause, axle sealing device of the present utility model has been designed and produced.By the oily shelves 4 of axle sealing device
Between bearing (ball) cover 1 and bearing 7 in the rotary shaft 3 of 40mm spacing, oily shelves 4 are fixed with four screws 6 and spacing circle 5
On four M6 internal threads of the inner side of bearing (ball) cover 1.The axial spacing that spacing circle 5 keeps is 2mm.It is mounted with the bearing of oil catch 4
After 1 time dress of end cap, start the pump testing, the fluid for splashing has been can't see in the peephole of bearing (ball) cover 1.Oil catch 4 by splash
Lubricating oil is isolated in outside conventional seals structure 2, reduces the oil pressure at conventional seals structure 2, the lubricating oil isolated by oil catch 4
Liquid major part flows back to fuel tank through spill port and bearing base.Small part is flowed on the axle of rotation at a high speed, by centrifugal action, again
It is thrown out of, it is difficult to which the gap formed by oil catch 4 and the neck of rotary shaft 3 flow to the static pressure chamber between oil catch 4 and bearing (ball) cover 1.
Using the pump of this oily shelves 4, continuous operation two does not find leakage of oil problem every year.
After all more than ten pumps and blower fan install oil catch 4 additional of desulfurization onsite application, though conventional sealing apparatus 2 it is aging,
It is also oil-tight under conditions of the axle journal noticeable wear of oil seal lip position.In the equipment using labyrinth seal, wool felt sealing structure
On install oil catch additional after can equally reach ne-leakage requirement.The utility model axle sealing device is substantially better than conventional seals structure
Sealability, significant sealing affection, effectively prevent equipment leakage oil problem.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New scope is defined, and on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the protection of the utility model claims determination
In the range of.
Claims (4)
1. a kind of rotary shaft of axle sealing device, including pump or fan（3）And rotary shaft（3）The bearing (ball) cover of upper installation
（1）And sealing structure（2）, it is characterised in that：In bearing (ball) cover（1）Or sealing structure（2）With bearing（7）Between structure it is empty
One annulus en plaque oil shelves is installed in chamber（4）, oily shelves（4）Both rotary shaft was looped around by center ring hole（3）On, further through ring
Piece is by some screws（6）It is fixed on bearing (ball) cover（1）On, oily shelves（4）With rotary shaft（3）Between be provided with radial clearance（A）, with axle
Socket end lid（1）Or sealing structure（2）Between be provided with axial spacing（B）, axial spacing（B）Constitute static pressure chamber, oily shelves（4）Below
With a spill port（C）, the static pressure chamber passes through spill port（C）And the oil return line at bearing base connects with Lubricating oil tank
It is logical.
2. axle sealing device according to claim 1, it is characterised in that：The oily shelves（4）Centre bore and rotary shaft（3）
Radial clearance（A）It is 0.2-0.3mm, oily shelves（4）External diameter and bearing（7）Bore diameter of outer ring is equal, the screw（6）Positioned at oil
Shelves（4）With bearing (ball) cover（1）Or sealing structure（2）Between part be provided with spacing circle（5）.
3. axle sealing device according to claim 2, it is characterised in that：The spacing circle（5）The oily shelves of setting（4）With
Bearing (ball) cover（1）Or sealing structure（2）Between axial spacing（B）It is 2-3mm.
4. axle sealing device according to claim 3, it is characterised in that：The oily shelves（4）Thickness of slab 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328824.2U CN206299791U (en) | 2016-12-06 | 2016-12-06 | Axle sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621328824.2U CN206299791U (en) | 2016-12-06 | 2016-12-06 | Axle sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206299791U true CN206299791U (en) | 2017-07-04 |
Family
ID=59212872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621328824.2U Active CN206299791U (en) | 2016-12-06 | 2016-12-06 | Axle sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206299791U (en) |
-
2016
- 2016-12-06 CN CN201621328824.2U patent/CN206299791U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Address before: 100039 room 911, 1 building, 16 West Fourth Ring Road, Haidian District, Beijing. Patentee before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. |