CN207349084U - The gland seal device of oil free screw machine - Google Patents
The gland seal device of oil free screw machine Download PDFInfo
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- CN207349084U CN207349084U CN201721261031.8U CN201721261031U CN207349084U CN 207349084 U CN207349084 U CN 207349084U CN 201721261031 U CN201721261031 U CN 201721261031U CN 207349084 U CN207349084 U CN 207349084U
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- seal
- screw machine
- oil free
- isolation
- free screw
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Abstract
A kind of gland seal device of oil free screw machine, including preposition sealing, primary seal, isolation hermetic seal and bearing on the rotor of oil free screw machine.Primary seal is between preposition sealing and bearing；Isolate hermetic seal between primary seal and bearing；Primary seal is double mechanical seal；The water injection hole and backwater hole through housing sidewall are offered respectively in the housing of oil free screw machine and the corresponding position of double mechanical seal；Oil free screw machine housing with isolate the corresponding position of hermetic seal be equipped with through housing sidewall isolation gas air admission hole, the isolation gas entrance hole through isolation hermetic seal side wall is equipped with the side wall of isolation hermetic seal, being filled with the isolation gas of isolation gas air admission hole can enter in isolation gas entrance hole；The mudhole through housing sidewall is equipped with housing of the mechanical seal with isolating the oil free screw machine between hermetic seal.The utility model will not pollute the working media steam in screw machine working chamber, will not influence the service life of rotor bearing.
Description
Technical field
It the utility model is related to the gland seal device of oil free screw machine.
Background technology
Gland seal device is used to bearing lubrication oil system being effectively isolated with working chamber to come, and is the important portion of oil free screw machine
Part.The gland seal device of existing oil free screw machine is usually composed of preposition sealing and primary seal, and preposition sealing is general to be used
Labyrinth seal or carbon ring seal, primary seal use with the oily mechanical seal as sealing medium or are used as sealing medium by the use of gas
Dry gas seals.Leakage, high pressure and high temperature are the common problems that current oil free screw machine side faces.Existing gland seal device can not be thorough
Bottom solves the leakage problem of Seal Oil and blanket gas, can only be reduced as far as mechanical seal Seal Oil and dry gas seals it is close
The amount of leakage of gas is sealed, what the pollution of Seal Oil and blanket gas to internal working media steam was constantly present, the steam of closed cycle
Operating mode is more serious.
The content of the invention
The technical problem to be solved by the utility model is to provide a kind of gland seal device of oil free screw machine, it will not be right
Working media steam in screw machine working chamber pollutes, and will not influence making for the bearing on oil free screw machine rotor
Use the service life.
In order to solve the above technical problems, the technical scheme adopted by the utility model is that：
The utility model provides the gland seal device of oil free screw machine, which is included installed in oil free screw machine
Preposition sealing, primary seal and bearing on rotor；Primary seal is between preposition sealing and bearing；The gland seal device further includes
Isolation hermetic seal on the rotor of oil free screw machine, isolation hermetic seal is between primary seal and bearing；Primary seal is
Double mechanical seal；Offered respectively through shell with the corresponding position of double mechanical seal in the housing of oil free screw machine
The water injection hole of body sidewall and the backwater hole through housing sidewall；Oil free screw machine housing with isolating the corresponding position of hermetic seal
The isolation gas air admission hole through housing sidewall is installed, is equipped with the side wall of isolation hermetic seal through isolation hermetic seal side wall
Isolate gas entrance hole, being filled with the isolation gas of isolation gas air admission hole can enter in isolation gas entrance hole；In mechanical seal with isolating
The housing of oil free screw machine between hermetic seal is equipped with the mudhole through housing sidewall.
After adopting the above technical scheme, the utility model at least has the following advantages：
1st, according to the gland seal device of the oil free screw machine of one embodiment of the utility model by being noted to double mechanical seal
Water, makes to be sealed by high pressure moisture film between the rotating ring of double mechanical seal and stationary ring, so as to fundamentally avoid
Existing mechanical seal is because polluting the working media steam in working chamber as sealing medium using oil or dry gas
Phenomenon, at the same time, according to the gland seal device of the oil free screw machine of one embodiment of the utility model in double mechanical seal
It is additionally provided between bearing and isolates hermetic seal, moisture can be avoided to bearing；
2nd, can be realized to the cold of preposition sealing according to the gland seal device of the oil free screw machine of one embodiment of the utility model
But handle so that the gland seal device can adapt to the operating mode of high-temperature medium steam.
Brief description of the drawings
Fig. 1 shows the structure diagram of one embodiment of the gland seal device according to the utility model oil free screw machine.
Embodiment
Further explanation is made to the utility model below in conjunction with the accompanying drawings.
Please refer to Fig.1.Included being installed on oil-free according to the gland seal device of the oil free screw machine of one embodiment of the utility model
Preposition sealing 1, primary seal 2, isolation hermetic seal 3 and bearing on the rotor 9 of screw machine（Not shown in figure）.
Primary seal 2 is between preposition sealing 1 and bearing；Isolate hermetic seal 3 between primary seal 2 and bearing.In Fig. 1
Example in, preposition sealing 1 and isolation hermetic seal 3 is carbon ring seal, and three carbocyclic rings 10 are equipped with preposition sealing 1, isolation gas
Twice carbocyclic ring 30 is equipped with sealing 3, primary seal 2 is double mechanical seal.In other embodiments, preposition sealing 1 can also adopt
With labyrinth seal, isolation hermetic seal 3 can use labyrinth seal or dry gas seals.
Offered respectively through 8 side of housing with 2 corresponding position of double mechanical seal in the housing 8 of oil free screw machine
The water injection hole 81 of wall and the backwater hole 82 through housing sidewall.By water injection hole 81 can the water filling into double mechanical seal 2, note
The water entered can form high pressure moisture film between the rotating ring and stationary ring of double mechanical seal 2, so as to fulfill sealing.Inject Double End
The water overwhelming majority as sealing medium in mechanical seal is flowed out from backwater hole 82.
Oil free screw machine housing 8 with isolate 3 corresponding position of hermetic seal be equipped with through 8 side wall of housing isolation gas
Air admission hole 83, the isolation gas entrance hole 33 through isolation hermetic seal side wall is equipped with the side wall of isolation hermetic seal 3, is filled with isolation
The isolation gas of gas air admission hole 83 can be entered in isolation gas entrance hole 33, and then enters isolation gas by isolating gas entrance hole 33
Gap between 9 outer circumferential surface of inner wall and rotor of sealing 3.In mechanical seal 2 with isolating the oil free screw machine between hermetic seal 3
Housing is equipped with the mudhole 84 through 8 side wall of housing, under the action of gas is isolated, the water as sealing medium of micro leakage
It can be discharged from mudhole 84.In the present embodiment, it is equipped with the lateral surface of isolation hermetic seal 3 along the circumferential direction for isolating hermetic seal
The annular isolation gas guiding groove 34 of direction extension, isolation gas entrance hole 33 are opened on the bottom surface of annular isolation gas guiding groove 34；Every
From the outlet face annular isolation gas guiding groove 34 of gas air admission hole 83, annular can be passed through by being filled with the isolation gas of isolation gas air admission hole 83
Isolation gas guiding groove 34 is led out into isolation gas entrance hole 33.The isolation gas can be compressed air, ammonia etc..
In order to make gland seal device can adapt to the operating mode of high-temperature medium steam, oil free screw machine housing 8 with it is preposition close
1 corresponding position is sealed to offer respectively through the first cooling water inlet opening 85 of 8 side wall of housing and through the cold of housing sidewall
But water backwater hole 86, the annular diversion groove extended along the circumferential direction of preposition sealing 1 is equipped with the lateral surface of preposition sealing 1
11, the water outlet of the first cooling water inlet opening 85 and the water inlet of cooling water backwater hole 86 distinguish face annular diversion groove 11.
The second cooling water water inlet through 8 side wall of housing is offered on oil free screw casing body between preposition sealing 1 and primary seal 2
Hole 87.In the present embodiment, the first sealing ring 51 and the second sealing ring 52 are arranged with the lateral surface of preposition sealing 1, first
Cooling water inlet opening 85 is close to the first sealing ring 51, and the second cooling water inlet opening 87 is close to the second sealing ring 52.In preposition sealing 1
Compressed with the axial touching position of the housing 8 of oil free screw machine using graphite pads 53.
Cooling water time can be flowed into by the guiding of annular diversion groove 11 by injecting the cooling water of the first cooling water inlet opening 85
Water hole 86, in the process, cooling water can cool down the 1, first sealing ring 51 of preposition sealing and the second sealing ring 52,
Cooling water circulation only in housing 8, is flowed out by cooling water backwater hole 86.The cooling water for injecting the second cooling water inlet opening 87 reaches
To the surface of rotor 9, the 1, first sealing ring 51 of preposition sealing, the second sealing ring 52 and rotor 9 are cooled down.
Offered on oil free screw casing body between the first cooling water inlet opening 85 and the second cooling water inlet opening 87
Through the balance lumen pore 88 of 8 side wall of housing, balance lumen pore 88 is used to connect with the gas piping of the low-pressure end of oil free screw machine, draws
Enter operating on low voltage medium steam.It is equipped with along the annular of the circumferential direction extension of preposition sealing 1 and leads in the lateral surface of preposition sealing 1
Gas groove 12, the outlet of annular 12 face of air guide groove balance lumen pore 88, the bottom surface of annular air guide groove 12 offer one or
Multiple air guide through holes 13 through 1 side wall of preposition sealing.The operating on low voltage medium steam being filled with balance lumen pore 88 can pass through ring
Shape air guide groove 12 is led out into air guide through hole 13, so as to reduce the water injection pressure of on high-tension side primary seal 3.
Screw machine according to one embodiment of the utility model can be helical-lobe compressor or screw expander, the nothing of the application
The gland seal device of oily screw machine is applicable to compressor and expanding machine.
Claims (8)
1. the gland seal device of oil free screw machine, the gland seal device includes preposition close on the rotor of oil free screw machine
Envelope, primary seal and bearing；The primary seal is between the preposition sealing and the bearing；It is characterized in that, the axis
Seal apparatus further includes the isolation hermetic seal on the rotor of oil free screw machine, and the isolation hermetic seal is located at the primary seal
Between the bearing；The primary seal is double mechanical seal；
Offered respectively through housing with the corresponding position of the double mechanical seal in the housing of the oil free screw machine
The water injection hole of side wall and the backwater hole through housing sidewall；It is opposite with the isolation hermetic seal in the housing of the oil free screw machine
The position answered is equipped with the isolation gas air admission hole through housing sidewall, is equipped with the side wall of the isolation hermetic seal through isolation gas
The isolation gas entrance hole of side wall is sealed, being filled with the isolation gas of isolation gas air admission hole can enter in the isolation gas entrance hole；
Mechanical seal is with isolating the housing of the oil free screw machine between hermetic seal equipped with the mudhole through the housing sidewall.
2. the gland seal device of oil free screw machine as claimed in claim 1, it is characterised in that in the housing of the oil free screw machine
Offered respectively through the first cooling water inlet opening of housing sidewall and through housing with the preposition corresponding position of sealing
The cooling water backwater hole of side wall, the annular extended along the circumferential direction of preposition sealing is equipped with the lateral surface of the preposition sealing
Described in the water inlet difference face of diversion groove, the water outlet of the first cooling water inlet opening and the cooling water backwater hole
Annular diversion groove；
Second through housing sidewall is offered on oil free screw casing body between the preposition sealing and the primary seal
Cooling water inlet opening.
3. the gland seal device of oil free screw machine as claimed in claim 2, it is characterised in that on the lateral surface of the preposition sealing
It is arranged with the first sealing ring and the second sealing ring, the first cooling water inlet opening is close to first sealing ring, and described second
Cooling water inlet opening is close to second sealing ring.
4. the gland seal device of oil free screw machine as claimed in claim 2, it is characterised in that in the first cooling water inlet opening
The balance lumen pore through housing sidewall is offered on oil free screw casing body between the second cooling water inlet opening, it is described
Balance lumen pore is used to connect with the gas piping of the low-pressure end of oil free screw machine；
The annular air guide groove extended along the circumferential direction of preposition sealing, the ring are equipped with the lateral surface of the preposition sealing
Balance the outlet of lumen pore described in shape air guide groove face, the bottom surface of the annular air guide groove is offered before one or more runs through
Put the air guide through hole of sealing side wall.
5. the gland seal device of oil free screw machine as claimed in claim 1, it is characterised in that described preposition to be sealed into carbocyclic ring close
Envelope or labyrinth seal.
6. the gland seal device of oil free screw machine as claimed in claim 1, it is characterised in that the isolation hermetic seal is carbocyclic ring
Sealing, labyrinth seal or dry gas seals.
7. the gland seal device of the oil free screw machine as described in claim 1 or 6, it is characterised in that in the isolation hermetic seal
Lateral surface is equipped with the annular isolation gas guiding groove extended along the circumferential direction of isolation hermetic seal, the isolation gas entrance hole opening
In the bottom surface of the annular isolation gas guiding groove；Annular isolation gas guiding groove described in the outlet face of the isolation gas air admission hole.
8. the gland seal device of oil free screw machine as claimed in claim 1, it is characterised in that the screw machine is screw compression
Machine or screw expander.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721261031.8U CN207349084U (en) | 2017-09-28 | 2017-09-28 | The gland seal device of oil free screw machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721261031.8U CN207349084U (en) | 2017-09-28 | 2017-09-28 | The gland seal device of oil free screw machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207349084U true CN207349084U (en) | 2018-05-11 |
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ID=62356899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721261031.8U Active CN207349084U (en) | 2017-09-28 | 2017-09-28 | The gland seal device of oil free screw machine |
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| CN (1) | CN207349084U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654377A (en) * | 2017-09-28 | 2018-02-02 | 上海齐耀螺杆机械有限公司 | The gland seal device of oil free screw machine |
| TWI699482B (en) * | 2019-05-28 | 2020-07-21 | 大陸商復盛實業（上海）有限公司 | Oil free twin rotary-screw gas compressor |
-
2017
- 2017-09-28 CN CN201721261031.8U patent/CN207349084U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654377A (en) * | 2017-09-28 | 2018-02-02 | 上海齐耀螺杆机械有限公司 | The gland seal device of oil free screw machine |
| TWI699482B (en) * | 2019-05-28 | 2020-07-21 | 大陸商復盛實業（上海）有限公司 | Oil free twin rotary-screw gas compressor |
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