CN208380853U - Oil free screw compressor - Google Patents
Oil free screw compressor Download PDFInfo
- Publication number
- CN208380853U CN208380853U CN201820803685.7U CN201820803685U CN208380853U CN 208380853 U CN208380853 U CN 208380853U CN 201820803685 U CN201820803685 U CN 201820803685U CN 208380853 U CN208380853 U CN 208380853U
- Authority
- CN
- China
- Prior art keywords
- oil free
- screw compressor
- locking nut
- deep groove
- ball bearing
- Prior art date
- 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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Links
- 230000008961 swelling Effects 0.000 claims description 2
- 230000036316 preload Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 20
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
- Transmission Devices (AREA)
Abstract
The utility model discloses a kind of oil free screw compressor, including screw rotor, casing and the synchromesh gear being mounted on the screw rotor, the oil free screw compressor further includes a deep groove ball bearing and an adjustment gasket and a locking nut, the deep groove ball bearing axially and radially with the chassis contact, wherein, the deep groove ball bearing, the adjustment gasket, the synchromesh gear and the locking nut are sequentially arranged on the screw rotor, and the deep groove ball bearing, the adjustment gasket and the synchromesh gear are pressed between the casing and the locking nut.The beneficial effects of the utility model are: a deep groove ball bearing is only needed to be achieved that radial and axial support, while the fixation of synchromesh gear is achieved that by a locking nut.Reduce mounting structure and cost thus significantly, simplifies installation procedure.
Description
Technical field
The utility model relates to a kind of oil free screw compressors.
Background technique
It is as shown in Figure 1 traditional twin-screw oilless (oil free) compressor.Screw rotor 1 can exist simultaneously in operation radial force and
Axial force.Cylindrical bearing 12, which is resisted against on gasket 6, bears radial force, and 4 angular contact ball bearings 8 are resisted against support construction 7
On bear axial force.Locking nut 9 is used in the axial direction fix 4 angular contact ball bearings 8, while relying on locking nut 9
Limit come when controlling the axial gap between screw rotor 1 and casing 2 to guarantee that screw rotor 1 operates inside casing 2 not
It rubs.Simultaneously because bearing 12 and 4 angular contact ball bearings 8 and synchromesh gear 11 are to need oil lubrication, and moisten
Lubricating oil cannot enter 1 the inside of screw rotor, therefore forming sealing group by labyrinth ring 3, lip envelope 4 and anti-wear sleeve 5 will compression
Chamber is isolated with bearing bore.Additionally, due to being double-screw structure, passes through synchromesh gear 11 between screw rotor and another is same
It walks gear to drive to guarantee that screw rotor 1 is not contacted with an other roots rotor, locking nut 10 is used to synchromesh gear 11 here
It is fixed on screw rotor 1 to prevent synchromesh gear 11 from sliding axially in the running.
Thus the bearing and locking mechanism of the prior art need two bearings (cylindrical bearing 12 and 4 angular contact ball axis
It holds 8), two locking nuts (locking nut 9 and locking nut 10), for assembly, this needs three even more processes
It completes, installation is inconvenient.
Utility model content
The purpose of this utility model is bearing and locking mechanism the construction complexity for existing oil free screw compressor, peace
Cumbersome technical problem is filled, a kind of oil free screw compressor is provided.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions:
A kind of oil free screw compressor, including screw rotor, casing and the synchronous gear being mounted on the screw rotor
Wheel, it is characterized in that, the oil free screw compressor further includes a deep groove ball bearing and an adjustment gasket and a locking nut, institute
State deep groove ball bearing axially and radially with the chassis contact, wherein the deep groove ball bearing, the adjustment gasket, institute
It states synchromesh gear and the locking nut is sequentially arranged on the screw rotor, and the deep groove ball bearing, the adjustment
Gasket and the synchromesh gear are pressed between the casing and the locking nut.
Pass through the utilization of this programme, it is only necessary to which a deep groove ball bearing is achieved that radial and axial support, leads to simultaneously
Cross the fixation that a locking nut is achieved that synchromesh gear.Reduce mounting structure and cost thus significantly, simplifies peace
Fill process.
Preferably, oil free screw compressor further includes an expansion sleeve, the expansion sleeve is compressed by the locking nut, and institute
Expansion sleeve is stated to be arranged between the synchromesh gear and the screw rotor.Locking nut compress lock sleeve after, expansion sleeve by
Axial force and generate radial deformation preferably prevents synchromesh gear from sliding so as to withstand synchromesh gear radially.
Preferably, the oil free screw compressor includes seal chamber and bearing bore, the screw rotor include threaded shank and
Interconnecting piece, the screw parts are in the seal chamber, and the connecting portion is in the bearing bore.
Preferably, the oil free screw compressor further includes axle sleeve, the axle sleeve is mounted on the interconnecting piece.
Preferably, the oil free screw compressor further includes lip envelope, lip envelope is sealedly attached to the axle sleeve and described
Between casing.Seal chamber and bearing bore can be isolated well for lip envelope, prevent the lubricating oil in bearing bore from entering seal chamber.
Preferably, the deep groove ball bearing, the adjustment gasket, the synchromesh gear and the locking nut are mounted on institute
It states on interconnecting piece.
Preferably, the casing includes stepped part, the deep groove ball bearing is axially and radially being connect with the stepped part
Touching.Stepped part can be good at axially and radially being supported deep groove ball bearing, and play positioning action.
Preferably, the prefastening torque of the locking nut is 60-80Nm.
Compared with prior art, the utility model has the beneficial effects that a deep groove ball bearing is only needed to be achieved that diameter
To with axial support, while being achieved that by a locking nut fixation of synchromesh gear.Reduce peace thus significantly
Assembling structure and cost, simplify installation procedure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the oil free screw compressor of the prior art.
Fig. 2 is the structural schematic diagram of the oil free screw compressor of the utility model preferred embodiment.
Specific embodiment
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing:
As shown in Figure 1, the utility model discloses a kind of oil free screw compressor, including screw rotor 1, casing 2 and
The synchromesh gear 6 being mounted on the screw rotor 1, wherein the oil free screw compressor further includes 5 He of a deep groove ball bearing
One adjustment gasket 7 and a locking nut 8, deep groove ball bearing 5 are axially and radially being contacted with casing 2, wherein the deep-groove ball
Bearing 5, adjustment gasket 7, synchromesh gear 6 and locking nut 8 are sequentially arranged on screw rotor 1, and deep groove ball bearing 5, tune
Whole gasket 7 and synchromesh gear 6 are pressed between casing 2 and locking nut 8.
In assembling, by the gap (being denoted as A) between measurement deep groove ball bearing 5 and synchromesh gear 6, then with grinding means
The thickness for adjusting gasket 7 is ground to equal to A, then is pre-tightened by locking nut 8, deep groove ball bearing 5 is allow to bear diameter simultaneously
To power and axial force.
Pass through the utilization of this programme, it is only necessary to which a deep groove ball bearing 5 is achieved that radial and axial support, leads to simultaneously
Cross the fixation that a locking nut 8 is achieved that synchromesh gear 6.Reduce mounting structure and cost thus significantly, simplifies
Installation procedure.
In the present solution, oil free screw compressor further includes an expansion sleeve 9, expansion sleeve 9 is compressed by locking nut 8, and swelling
Set 9 is arranged between synchromesh gear 6 and screw rotor 1.After locking nut 8 compresses lock sleeve, expansion sleeve 9 is by axial force and produces
Raw radial deformation preferably prevents synchromesh gear 6 from sliding so as to withstand synchromesh gear 6 radially.
In the present solution, the oil free screw compressor includes seal chamber 101 and bearing bore 102, screw rotor 1 includes screw rod
Portion 11 and interconnecting piece 12, threaded shank 11 are located in seal chamber 101, and interconnecting piece 12 is located in bearing bore 102.
In the present solution, the oil free screw compressor further includes axle sleeve 3, axle sleeve 3 is mounted on interconnecting piece 12.
In the present solution, the oil free screw compressor further includes lip envelope 4, lip envelope 4 be sealedly attached to axle sleeve 3 and casing 2 it
Between.Seal chamber 101 and bearing bore 102 can be isolated well for lip envelope 4, prevent the lubricating oil in bearing bore 102 from entering sealing
Chamber 101.
In the present solution, deep groove ball bearing 5, adjustment gasket 7, synchromesh gear 6 and locking nut 8 are mounted on interconnecting piece 12.
In the present solution, the casing 2 includes stepped part, deep groove ball bearing 5 is axially and radially being connect with the stepped part
Touching.Stepped part can be good at axially and radially being supported deep groove ball bearing 5, and play positioning action.
In the present solution, the prefastening torque of locking nut 8 is 60-80Nm.
Compared with prior art, the utility model has the beneficial effects that a deep groove ball bearing 5 is only needed to be achieved that diameter
To the support with axial direction, while passing through the fixation that a locking nut 8 is achieved that synchromesh gear 6.Reduce thus significantly
Mounting structure and cost, simplify installation procedure.
It should be understood that the application of the utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
It says, it can be modified or changed according to the above description, and all these modifications and variations all should belong to the appended power of the utility model
The protection scope that benefit requires.
Claims (8)
1. a kind of oil free screw compressor, including screw rotor, casing and the synchromesh gear being mounted on the screw rotor,
It is characterized in that, the oil free screw compressor further includes a deep groove ball bearing and one adjusts gasket and a locking nut, it is described
Deep groove ball bearing axially and radially with the chassis contact, wherein it is the deep groove ball bearing, the adjustment gasket, described
Synchromesh gear and the locking nut are sequentially arranged on the screw rotor, and the deep groove ball bearing, the adjusting pad
Piece and the synchromesh gear are pressed between the casing and the locking nut.
2. oil free screw compressor as described in claim 1, which is characterized in that oil free screw compressor further includes a swelling
Set, the expansion sleeve is compressed by the locking nut, and the expansion sleeve is arranged in the synchromesh gear and the screw rotor
Between.
3. oil free screw compressor as described in claim 1, which is characterized in that the oil free screw compressor includes seal chamber
And bearing bore, the screw rotor include threaded shank and interconnecting piece, the screw parts are in the seal chamber, the interconnecting piece
In the bearing bore.
4. oil free screw compressor as claimed in claim 3, which is characterized in that the oil free screw compressor further includes axis
Set, the axle sleeve are mounted on the interconnecting piece.
5. oil free screw compressor as claimed in claim 4, which is characterized in that the oil free screw compressor further includes lip
Envelope, the lip envelope are sealedly attached between the axle sleeve and the casing.
6. oil free screw compressor as claimed in claim 3, which is characterized in that the deep groove ball bearing, the adjustment gasket,
The synchromesh gear and the locking nut are mounted on the interconnecting piece.
7. oil free screw compressor as claimed in any one of claims 1 to 6, which is characterized in that the casing includes ladder
Portion, the deep groove ball bearing are axially and radially being contacted with the stepped part.
8. oil free screw compressor as claimed in any one of claims 1 to 6, which is characterized in that the preload of the locking nut
Torque is 60-80Nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820803685.7U CN208380853U (en) | 2018-05-28 | 2018-05-28 | Oil free screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820803685.7U CN208380853U (en) | 2018-05-28 | 2018-05-28 | Oil free screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208380853U true CN208380853U (en) | 2019-01-15 |
Family
ID=64969234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820803685.7U Active CN208380853U (en) | 2018-05-28 | 2018-05-28 | Oil free screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208380853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493208A (en) * | 2022-12-29 | 2023-07-28 | 协扬机械(广东)有限公司 | Paper pressing wheel device of pasting machine |
-
2018
- 2018-05-28 CN CN201820803685.7U patent/CN208380853U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493208A (en) * | 2022-12-29 | 2023-07-28 | 协扬机械(广东)有限公司 | Paper pressing wheel device of pasting machine |
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| GR01 | Patent grant |