CN208364787U - A kind of helical-lobe compressor axle sealing structure - Google Patents
A kind of helical-lobe compressor axle sealing structure Download PDFInfo
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- CN208364787U CN208364787U CN201820818976.3U CN201820818976U CN208364787U CN 208364787 U CN208364787 U CN 208364787U CN 201820818976 U CN201820818976 U CN 201820818976U CN 208364787 U CN208364787 U CN 208364787U
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Abstract
The utility model discloses a kind of helical-lobe compressor axle sealing structure, it includes rotary shaft, coat the oil sealing axle sleeve of rotary shaft, coat the main oil sealing of rotary shaft and the oil seal seat of secondary oil sealing and the cladding main oil sealing and secondary oil sealing, static seal is formed between the oil sealing axle sleeve and the rotary shaft, the oil seal seat is set in the outer surface of the oil sealing axle sleeve, the main oil sealing, the pair oil sealing and the oil seal seat are respectively formed static seal, the main oil sealing, cavity is formed between the oil seal seat and the oil sealing axle sleeve, the hole path that the oil seal seat has connection extraneous and the through-hole inside connection, the hole path of the oil seal seat is connected via the through-hole of the oil seal seat with the cavity.The utility model structure is simple, adaptable, at low cost, easy for installation.When in harsh environments or compressing poisonous medium, this structure may be implemented effectively to seal, once leaking, can be recycled, can handling for leak materials also may be implemented, substantially increase environment friendly.
Description
Technical field
The utility model relates to helical-lobe compressor axle sealing structures, in particular to are used for the sealing of rotary shaft.
Background technique
Helical-lobe compressor is widely used in the industrial circles such as air force, chemical industry as a kind of important industrial general equipment.
The sealing of previous helical-lobe compressor power input shaft generally uses simple contact PTFE oil sealing, also has using mechanical close
Envelope, as long as but oil sealing, have the risk of leakage.
Spiral shell is adhered to due to containing more hard dust in environment in the more occasion of the dust such as ceramics factory, cement plant
When on the oil sealing of bar air compressor, the abrasion of oil sealing and oil sealing axle sleeve can be aggravated, cause oil sealing fail in a short time.
The technique compressor of the toxic gases such as compression vinyl chloride can cause various diseases due to the toxicity of gas, therefore
Wish the absolute sealing of compressed media, will not cause damages because of the leakage of compressor shaft gland to environment and human body, and common
Axle sealing structure is insufficient for demand.
Therefore, field technical staff is dedicated to researching and developing a kind of novel helical-lobe compressor axle sealing structure, improves sealing
Reliability of structure, it is ensured that under adverse circumstances operating condition, oil sealing is unlikely to fail too fast, also ensures that when compressing poisonous medium,
The poisonous medium and lubricating oil of leakage are recyclable, can handle, and avoid damaging environment and human body.
Utility model content
The purpose of the utility model is to provide a kind of helical-lobe compressor axle sealing structures, it solves the above-mentioned prior art and deposits
The problem of.
To achieve the above object, the technical solution that the utility model uses is: a kind of screw compression shaft seal knot
Structure comprising rotary shaft, the oil sealing axle sleeve of the cladding rotary shaft, the main oil sealing of the cladding rotary shaft and secondary oil sealing and cladding
The oil seal seat of the main oil sealing and secondary oil sealing, forms static seal, the oil seal seat between the oil sealing axle sleeve and the rotary shaft
It is set in the outer surface of the oil sealing axle sleeve, the main oil sealing, the secondary oil sealing and the oil seal seat are respectively formed static seal, described
Form cavity between main oil sealing, the oil seal seat and the oil sealing axle sleeve, hole path that the oil seal seat has connection extraneous and
Through-hole inside connection, the hole path of the oil seal seat are connected via the through-hole of the oil seal seat with the cavity.
The oil seal seat has the first mounting hole and the second mounting hole, first mounting hole and second mounting hole it
Between form a boss.
A through-hole is surrounded between the boss of the oil seal seat, the secondary oil sealing and the oil sealing axle sleeve.
The main oil sealing is mounted in first mounting hole, and the pair oil sealing is mounted in second mounting hole.
The pair oil sealing is two-lip seal, grease up between two lips of the pair oil sealing.
The oil sealing axle sleeve and the rotary shaft pass through interference fit, the fillable anaerobic sealer in centre.
The hole path internal diameter of the oil seal seat is greater than the through-hole internal diameter of the oil seal seat.
Big shell is installed by O-ring outside the oil seal seat.
Compared with prior art, a kind of beneficial effect of helical-lobe compressor axle sealing structure of the utility model is: main oil
Envelope is primarily subjected to the pressure medium of helical lobe compressor host, prevents medium from leaking, secondary oil sealing mainly prevent dust in air with
Main oil sealing contact causes main oil sealing service life reduction, while the isolation gas for being also possible to prevent to be filled in technique compressor leaks into ring
In border.It will form a cavity between main oil sealing and secondary oil sealing, open up on oil seal seat and communicated there are two hole with this cavity, this is empty
Chamber can be used as the oil leak chamber of screw air compressor, can also be used as screw rod technique compressor inflatable chamber.The utility model
A kind of helical-lobe compressor axle sealing structure has the spies such as simple structure, high reliablity, adaptable, at low cost, easy for installation
Point, is greatly improved equipment dependability and environment friendly.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings, in which:
Fig. 1 is a kind of schematic diagram of the oil seal seat of helical-lobe compressor axle sealing structure of the utility model；
Fig. 2 is a kind of schematic diagram of helical-lobe compressor axle sealing structure of the utility model；
Fig. 3 is a kind of partial enlarged view of helical-lobe compressor axle sealing structure in Fig. 2.
Specific embodiment
The purpose of the utility model is to provide a kind of helical-lobe compressor axle sealing structures, it solves the above-mentioned prior art and deposits
The problem of.
Please refer to Fig. 1, Fig. 2 and Fig. 3, a kind of helical-lobe compressor axle sealing structure of the utility model, including main oil sealing 1,
Secondary oil sealing 2, oil seal seat 3, oil sealing axle sleeve 4, rotary shaft 5, big shell 6, O type circle 7 and cavity 8, the pair oil sealing 2 are lips oil
Envelope.
Fig. 1 is please referred to, the oil seal seat 3 is substantially in convex, and the oil seal seat 3 divides for upper section 31 and lower section 32, the oil
31 outer diameter of upper section for sealing seat 3 is less than the lower section 32 of the oil seal seat 3, and 31 outer surface of upper section is positioning surface 331, described
32 outer surface of lower section of oil seal seat 3 is static sealing surface 332, and the positioning surface 331 vertically forms L-type with the static sealing surface 332
Groove 3311.The oil seal seat 3 has receiving through-hole 33, and the oil seal seat 3 accommodates 33 inner surface of through-hole and is equipped with seal mounting hole
Position 34 and seal mounting hole position 35, the seal mounting hole position 34 are located at 31 inner surface of upper section of the oil seal seat 3, the oil
Seal installation hole position 35 is located at 32 inner surface of lower section of the oil seal seat 3, and 34 sinking degree of seal mounting hole position is greater than described
There is a boss 36 in seal mounting hole position 35 between the seal mounting hole position 34 and the seal mounting hole position 35.The oil
Between seal installation hole position 34 and the boss 36 formed a groove 37,37 sinking degree of groove of the oil seal seat 3 with it is described
Seal mounting hole position 35 is identical.The hole path 38 and hole path 39 that the lower section 32 of the oil seal seat 3 has connection extraneous.The oil
Through-hole 381 and through-hole 391 that seat 3 has connection interior arrangement are sealed, the hole path 38 of the oil seal seat 3 is via the oil seal seat 3
Through-hole 381 be connected with the groove 37 of the oil seal seat 3, the hole path 39 of the oil seal seat 3 is via the oil seal seat 3
Through-hole 391 is connected with the groove 37 of the oil seal seat 3.The through-hole 381 and 391 internal diameter of through-hole of the oil seal seat 3 are less than described
Hole path 38 and hole path 39.
Fig. 2 is please referred to, the oil sealing axle sleeve 4 has receiving through-hole 41.41 internal diameter of receiving through-hole of the oil sealing axle sleeve 4 is small
In 33 internal diameter of receiving through-hole of the oil seal seat 3.
The rotary shaft 5 is substantially in cylindrical type, and 5 outer diameter of rotary shaft is not more than the receiving through-hole of the oil sealing axle sleeve 4
41 internal diameters.
The main oil sealing 1 is installed on the oil seal seat 3 with the secondary oil sealing 2, and the main oil sealing 1 is fixed on the oil
The seal mounting hole position 34 of seat 3 is sealed, the pair oil sealing 2 is fixed on the seal mounting hole position 35 of the oil seal seat 3, the main oil
It is static seal between envelope 1 and the secondary oil sealing 2 and oil seal seat 3, and rotates together with movement.
The oil seal seat 3 is set in the outer surface of the oil sealing axle sleeve 4.The lip of the main oil sealing 1 and the secondary oil sealing 2
It is fitted closely with the oil sealing axle sleeve 4, forms dynamic sealing.Grease up between two lips of the pair oil sealing 2, the profit
Consistent lubricant layer is lubricated the secondary oil sealing 2, reduces frictional dissipation, ensure that the prolonged application reliability of this sealing structure, mention
The service life of the high secondary oil sealing 2.
The receiving through-hole 41 of the oil sealing axle sleeve 4 coats the rotary shaft 5, and by interference fit, centre is fillable a small amount of
Anaerobic sealer.It is static seal between the oil sealing axle sleeve 4 and the rotary shaft 5, rotates together with movement.
The big shell 6 is installed at the L-type groove 3311 of the oil seal seat 3, the oil seal seat 3 by the O-ring 7 with
The big shell 6 forms static seal.The O-ring 7 can also be replaced with anaerobic sealer.When helical-lobe compressor works,
6 side of big shell has a large amount of lubricating oil, compressed air or poisonous medium, it is therefore desirable to seal.
Refer to Fig. 2 and Fig. 3, the main oil sealing 1, the secondary oil sealing 2, the oil seal seat 3, the oil sealing axle sleeve 4 assembling
It is coated on the outer surface of the rotary shaft 5 together.The boss 36 of the oil seal seat 3, the secondary oil sealing 2 and the oil seal shaft
A through-hole 361 is surrounded between set 4, will form the cavity between the main oil sealing 1, the oil seal seat 3 and the oil sealing axle sleeve 4
8, the cavity 8 is formed by the recess of groove 37 of the oil seal seat 3, and the cavity 8 can be used as screw air compressor
Leakage chamber, can also be used as the inflatable chamber of screw rod technique compressor.The hole path 38 of the oil seal seat 3 is via the through-hole
381 are connected with the cavity 8, and the hole path 39 of the oil seal seat 3 is connected via the through-hole 391 with the cavity 8.
The main oil sealing 1 is primarily subjected to the pressure medium of helical lobe compressor host, prevents medium from leaking, and the pair oil sealing 2 mainly prevents
Dust in air is contacted with the main oil sealing 1, causes the main oil sealing service life reduction, while preventing from being filled in technique compressor
Isolation gas leakage into environment.
The embodiments of the present invention 1:, can be in the hole path 38 of the oil seal seat 3 when for screw air compressor
Upper installation breathing helmet installs oil sealing leaked oil recovering device, it would be possible to the lubricating oil of leakage on the hole path 39 of the oil seal seat 3
It is recovered to the suction chamber of main unit of screw air compressor, so that lubricating oil be avoided to leak out system.The pair oil sealing 2 has completely cut off environment
In dust, so that dust is avoided contact with the main oil sealing 1, improve the service life of the main oil sealing 1.Therefore the one of the utility model
Kind double oil seal helical-lobe compressor axle sealing structure, can be used for the sealing of screw air compressor, adapts to severe environmental conditions.
The embodiments of the present invention 2: when needing absolutely close to toxic gases such as vinyl chloride for screw rod technique compressor
Feng Shi can access nitrogen on the hole path 38 of the oil seal seat 3, and the hole path 39 of the oil seal seat 3 is used to that nitrogen to be discharged,
Nitrogen pressure in the cavity 8 is micro- to be higher than environment atmospheric pressure, can be with when toxic gas leakage and oil leak occurs
The toxic gas of leakage and lubricating oil are included in nitrogen by the hole path 39 of the oil seal seat 3, import after-treatment device
Middle carry out harmless treatment.Therefore a kind of double oil seal helical-lobe compressor axle sealing structure of the utility model, can be used for screw rod work
Can be recycled, can handling, environment friendly for harmful substance may be implemented when compressing hazardous medium in the sealing of skill compressor
It is good.
The utility model structure is simple, high reliablity, adaptable, at low cost, easy for installation.In harsh environments
Or when compression poisonous medium, this structure may be implemented effectively to seal, once leaking, returning for leak materials also may be implemented
It receives, can handle, substantially increase environment friendly, enhance customer experience degree.
Certainly, those skilled in the art in the art are it should be appreciated that above-described embodiment is intended merely to illustrate this reality
With novel, and it is not used as the restriction to the utility model, as long as in the spirit of the utility model, to above-mentioned reality
Apply the variation of example, modification will all be fallen in the range of the utility model claims.
Claims (8)
1. a kind of helical-lobe compressor axle sealing structure, it is characterised in that: it includes the oil seal shaft of rotary shaft, the cladding rotary shaft
Cover, coat the main oil sealing of the rotary shaft and the oil seal seat of secondary oil sealing and the cladding main oil sealing and secondary oil sealing, the oil seal shaft
Static seal is formed between set and the rotary shaft, the oil seal seat is set in the outer surface of the oil sealing axle sleeve, the main oil sealing,
The pair oil sealing and the oil seal seat are respectively formed static seal, shape between the main oil sealing, the oil seal seat and the oil sealing axle sleeve
At cavity, through-hole inside hole path that the oil seal seat has connection extraneous and connection, the hole path of the oil seal seat via
The through-hole of the oil seal seat is connected with the cavity.
2. a kind of helical-lobe compressor axle sealing structure as described in claim 1, it is characterised in that: the oil seal seat has the first peace
Hole and the second mounting hole are filled, forms a boss between first mounting hole and second mounting hole.
3. a kind of helical-lobe compressor axle sealing structure as claimed in claim 2, it is characterised in that: the boss of the oil seal seat, institute
It states and surrounds a through-hole between secondary oil sealing and the oil sealing axle sleeve.
4. a kind of helical-lobe compressor axle sealing structure as claimed in claim 2, it is characterised in that: the main oil sealing is mounted on described
In first mounting hole, the pair oil sealing is mounted in second mounting hole.
5. a kind of helical-lobe compressor axle sealing structure as claimed in claim 4, it is characterised in that: the pair oil sealing is lips oil
It seals, grease up between two lips of the pair oil sealing.
6. a kind of helical-lobe compressor axle sealing structure as described in claim 1, it is characterised in that: the oil sealing axle sleeve and the rotation
Shaft passes through interference fit, central filler anaerobic sealer.
7. a kind of helical-lobe compressor axle sealing structure as described in claim 1, it is characterised in that: in the hole path of the oil seal seat
Diameter is greater than the through-hole internal diameter of the oil seal seat.
8. a kind of helical-lobe compressor axle sealing structure as described in claim 1, it is characterised in that: pass through O outside the oil seal seat
Type circle installs big shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820818976.3U CN208364787U (en) | 2018-05-30 | 2018-05-30 | A kind of helical-lobe compressor axle sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820818976.3U CN208364787U (en) | 2018-05-30 | 2018-05-30 | A kind of helical-lobe compressor axle sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364787U true CN208364787U (en) | 2019-01-11 |
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ID=64930733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820818976.3U Active CN208364787U (en) | 2018-05-30 | 2018-05-30 | A kind of helical-lobe compressor axle sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208364787U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828644A (en) * | 2020-08-11 | 2020-10-27 | 国电大渡河检修安装有限公司 | Combined sealing device |
| CN114837945A (en) * | 2022-07-06 | 2022-08-02 | 南通图尔波冶金环保设备有限公司 | Air compressor capable of preventing shaft seal leakage and using method |
-
2018
- 2018-05-30 CN CN201820818976.3U patent/CN208364787U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828644A (en) * | 2020-08-11 | 2020-10-27 | 国电大渡河检修安装有限公司 | Combined sealing device |
| CN111828644B (en) * | 2020-08-11 | 2024-03-12 | 国能大渡河检修安装有限公司 | Combined sealing device |
| CN114837945A (en) * | 2022-07-06 | 2022-08-02 | 南通图尔波冶金环保设备有限公司 | Air compressor capable of preventing shaft seal leakage and using method |
| CN114837945B (en) * | 2022-07-06 | 2022-09-16 | 南通图尔波冶金环保设备有限公司 | Air compressor capable of preventing shaft seal leakage and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211221 Address after: 201800 No. 201, Jiamei Road, Nanxiang high tech park, Jiading District, Shanghai Patentee after: SHANGHAI UNITED COMPRESSOR Co.,Ltd. Address before: 215400 building 3, No. 269, Xingang Middle Road, Shaxi Town, Taicang City, Suzhou City, Jiangsu Province Patentee before: SHUNQI COMPRESSOR TECHNOLOGY (SUZHOU) Co.,Ltd. |