CN206600269U - A kind of vacuum pump shaft seal structure - Google Patents
A kind of vacuum pump shaft seal structure Download PDFInfo
- Publication number
- CN206600269U CN206600269U CN201720379101.3U CN201720379101U CN206600269U CN 206600269 U CN206600269 U CN 206600269U CN 201720379101 U CN201720379101 U CN 201720379101U CN 206600269 U CN206600269 U CN 206600269U
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- Prior art keywords
- oil seal
- axle sleeve
- cavity
- vacuum pump
- outside framework
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Abstract
The utility model discloses a kind of vacuum pump shaft seal structure, it includes cavity and the rotor in cavity, and the right-hand member of the rotor is provided with sealing surface, it is characterised in that：Axle sleeve is installed with the sealing surface, oil seal cover is arranged with outside the axle sleeve, the oil seal cover is arranged on the right-hand member of cavity；Two outside framework oil seals are installed, lip and the axle sleeve of the outside framework oil seal offset in the endoporus at the oil seal cover two ends, and the axle sleeve can be rotated relative to lip；The axle sleeve is made up of high-abrasive material；The utility model has the advantages that good sealing effect, wear-resistant, service life is long.
Description
Technical field
The utility model is related to vacuum pump technology field, and in particular to a kind of vacuum pump shaft seal structure.
Background technology
Vavuum pump is the general designation of pumping equipment, and relatively common vavuum pump includes rotary vane type vacuum in the market
Pump, Roots type vacuum pump, screw pump etc..Vavuum pump requires energy long-time steady operation, and vacuum level requirements are high, so vacuum
The quality of the sealing of pump is even more important, and directly determines the performance of vavuum pump.However, the conventional sealing of vavuum pump at present is JO
Circle sealing or mechanical seal.Above-mentioned sealing means are fairly simple, and the sealing effectiveness of early stage is preferable；But it is due to that armature spindle is rotated
When and seal between friction ratio it is larger, produce heat, so as to accelerate the abrasion of seal, or even cracking situation,
Finally leak, service life is shorter.
Utility model content
Technical problem to be solved in the utility model is that the situation for being directed to prior art weares and teares small there is provided one kind, is used
The vacuum pump shaft seal structure of long lifespan and good sealing effect.
The utility model solve the technical scheme that is used of above-mentioned technical problem for：A kind of vacuum pump shaft seal structure, it
Rotor including cavity and in cavity, the right-hand member of the rotor is provided with sealing surface, it is characterised in that：On the sealing surface
Axle sleeve is installed with, oil seal cover is arranged with outside the axle sleeve, the oil seal cover is arranged on the right-hand member of cavity；The oil seal cover two ends
Two outside framework oil seals are installed, lip and the axle sleeve of the outside framework oil seal offset in endoporus, and the axle sleeve can turn with respect to lip
It is dynamic；The axle sleeve is made up of high-abrasive material.
The utility model forms two-stage movable sealing structure using double outside framework oil seals, and sealing effectiveness is more preferable；Moreover, skeleton is oily
The lip of envelope and axle sleeve lean sealing, and axle sleeve is made up of high-abrasive material, reduces and wear and tear, increase the service life.
Cavity is provided between two outside framework oil seals, the cavity is led to by the lubricating oil being arranged in the oil seal cover
Road is communicated with fuel tank.Lubricating oil is lubricated to lip, is reduced frictional heating, is further reduced abrasion.
The material of the axle sleeve is PTFE.
The oil seal cover is removably mounted on cavity.When outside framework oil seal, which is damaged, to be changed, oil seal cover only need to be pulled down,
Convenient maintenance.
Installed in the oil seal cover left end outside framework oil seal left end by end ring location fit.
The left end of the end ring is connected with installing the bearing on rotor bearing bearing-surface.In bearing and outside framework oil seal
Between end ring is set, not only outside framework oil seal can be also prevented from directly and bearing touch with locating framework oil sealing, protect bone
Frame oil sealing.
The utility model has the following advantages that：
1st, using double outside framework oil seals, two-stage movable sealing structure is formed, sealing effectiveness is more preferable；
2nd, the lip of outside framework oil seal by the axle sleeve of wear-resistant material with being sealed, and abrasion is few, increases the service life；
3rd, there is cavity between outside framework oil seal, lubricating oil can be flowed into by grease channel, lip is lubricated, subtracted
Few frictional heating, further reduces the abrasion of axle sleeve；
4th, oil seal cover is detachable installs, when outside framework oil seal is damaged, and can pull down oil seal cover, convenient maintenance；
5th, end ring is positioned to outside framework oil seal, prevents it from directly being contacted with bearing, can play protection skeleton oil
The effect of envelope.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail in conjunction with accompanying drawing.
In description of the present utility model, it is to be understood that term " on ", " in ", " under ", "front", "rear", " left side ",
The indicating position such as " right side ", " interior ", " outer " or position relationship are to be based on orientation shown in the drawings or position relationship, are for the ease of retouching
State, rather than indicate or imply that the device or element of meaning there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to limitation of the present utility model.
Fig. 1 shows a kind of embodiment of the present utility model, and it includes cavity 1 and the rotor 2 in cavity 1,
The right-hand member of the rotor 2 is disposed with the bearing face and sealing surface of different-diameter, and the diameter of bearing face is more than sealing
The diameter in face.Bearing 7 is installed, the outer ring of the bearing 7 is fixed in the mating holes of cavity 1 on bearing face.Rotor 2 it is close
Axle sleeve 4 is installed with front cover, oil seal cover 3 is arranged with outside the axle sleeve 4, the oil seal cover 3 is arranged on the right-hand member of cavity 1.
Two outside framework oil seals 5, lip and the phase of axle sleeve 4 of the outside framework oil seal 5 are installed in the endoporus at the two ends of oil seal cover 3
Support, and axle sleeve 4 can be rotated relative to lip；Axle sleeve 4 is made up of high-abrasive material, such as PTFE.Lip offsets and phase with axle sleeve
To motion, the dynamic sealing of axial direction is formed；Axle sleeve is made up of high-abrasive material, reduces abrasion, improves sealed reliability and extension
Service life.
Be provided with cavity between two outside framework oil seals 5, the cavity by the grease channel 8 that is arranged in oil seal cover 3 with
Fuel tank is communicated.Lubricating oil in fuel tank enters outside framework oil seal by grease channel, and the lip of outside framework oil seal is lubricated, entered
One step reduces abrasion.
Installed in the location fit of left end right bearing back-up ring 6 of the outside framework oil seal 5 of the left end of oil seal cover 3.The left end of end ring
It is connected with bearing 7.End ring is set between bearing and the outside framework oil seal of left end, not only can be with locating framework oil sealing, also
It can prevent outside framework oil seal from directly protecting outside framework oil seal with bearing touch.
Oil seal cover 3 is detachable to be arranged on cavity 1, when outside framework oil seal is damaged, it is necessary to be carried out more to outside framework oil seal
Oil seal cover, convenient maintenance need to be only pulled down when changing.
The utility model is not limited to above-mentioned embodiment, any deformation or change on this basis, all should fall at this
Within the protection domain of utility model.
Claims (6)
1. a kind of vacuum pump shaft seal structure, it includes cavity (1) and the rotor (2) in cavity (1), the rotor (2)
Right-hand member be provided with sealing surface, it is characterised in that：Axle sleeve (4) is installed with the sealing surface, is arranged with outside the axle sleeve (4)
Oil seal cover (3), the oil seal cover (3) is arranged on the right-hand member of cavity (1)；Two are provided with the endoporus at oil seal cover (3) two ends
Outside framework oil seal (5), lip and the axle sleeve (4) of the outside framework oil seal (5) are offseted, and the axle sleeve (4) can be rotated relative to lip；Institute
Axle sleeve (4) is stated to be made up of high-abrasive material.
2. vacuum pump shaft seal structure according to claim 1, it is characterised in that：Between two outside framework oil seals (5)
Cavity is provided with, the cavity is communicated by the grease channel (8) being arranged in the oil seal cover (3) with fuel tank.
3. vacuum pump shaft seal structure according to claim 1, it is characterised in that：The material of the axle sleeve (4) is PTFE.
4. vacuum pump shaft seal structure according to claim 1, it is characterised in that：The detachable peace of oil seal cover (3)
On cavity (1).
5. vacuum pump shaft seal structure according to claim 1, it is characterised in that：Installed in the oil seal cover (3) left end
Outside framework oil seal (5) left end by end ring (6) location fit.
6. vacuum pump shaft seal structure according to claim 5, it is characterised in that：The left end of the end ring (6) with
The bearing (7) installed on rotor (2) bearing face is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720379101.3U CN206600269U (en) | 2017-04-12 | 2017-04-12 | A kind of vacuum pump shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720379101.3U CN206600269U (en) | 2017-04-12 | 2017-04-12 | A kind of vacuum pump shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206600269U true CN206600269U (en) | 2017-10-31 |
Family
ID=60144127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720379101.3U Active CN206600269U (en) | 2017-04-12 | 2017-04-12 | A kind of vacuum pump shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206600269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691069A (en) * | 2021-08-18 | 2021-11-23 | 国能龙源环保泰州有限公司 | Direct-connected stirrer motor with oil blocking structure and using method thereof |
-
2017
- 2017-04-12 CN CN201720379101.3U patent/CN206600269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691069A (en) * | 2021-08-18 | 2021-11-23 | 国能龙源环保泰州有限公司 | Direct-connected stirrer motor with oil blocking structure and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 315505 Zhejiang Province, Ningbo city Fenghua District streets Xiwu Shang Qiao Road No. 18 Patentee after: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. Address before: West Street of Fenghua city in Zhejiang province is 315505 Ningbo City Road No. 18 Patentee before: NINGBO BAOSI ENERGY EQUIPMENT Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |