CN107762849A - The horizontal in line vavuum pump of oil-free - Google Patents
The horizontal in line vavuum pump of oil-free Download PDFInfo
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- CN107762849A CN107762849A CN201711147310.6A CN201711147310A CN107762849A CN 107762849 A CN107762849 A CN 107762849A CN 201711147310 A CN201711147310 A CN 201711147310A CN 107762849 A CN107762849 A CN 107762849A
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- oil
- drive end
- armature spindle
- bearing bracket
- rotor
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Abstract
The present invention relates to a kind of horizontal in line vavuum pump of oil-free,Belong to vavuum pump and manufacture and design field,Including the pump housing and rotor,Rotor is sleeved on armature spindle,Rotor is arranged in the pump housing,The rear end of the pump housing sets bonnet,After cover and be provided with air inlet,The front end of the pump housing sets drive end bearing bracket,Drive end bearing bracket realizes dynamic sealing when rotor operates by double sections of dynamic sealing assemblies to the pump chamber of the pump housing,Outside framework oil seal is set in drive end bearing bracket,Drive end bearing bracket returns gas port provided with what is be connected with exhaust outlet,Drive end bearing bracket bottom is provided with exhaust outlet,Drive end bearing bracket is anterior to set drive end bearing bracket bearing,Drive end bearing bracket bearing holder (housing, cover) is on armature spindle,Drive end bearing bracket front end sets protecgulum,Front Cover Bearing is set on protecgulum,Front Cover Bearing is sleeved on armature spindle,Synchromesh gear and oil collector are set on the armature spindle on the inside of protecgulum,Oil collector is received oilhole and communicated with armature spindle receipts oilhole,Armature spindle is received oilhole and communicated with built-in cooling tube.Operational reliability and stability of the present invention are high, good sealing effect, service life length, practical.
Description
Technical field
The present invention relates to a kind of horizontal in line vavuum pump of oil-free, belongs to vavuum pump and manufactures and designs field.
Background technology
Oil-free discharging directly into atmosphere vavuum pump is also known as dry pump, because totally cleaning meets environmental requirement for its work, also as its
Compression causes work more to save between internal level, so as to be favored by market.Currently used vavuum pump is as shown in figure 9, main
Will be by protecgulum, drive end bearing bracket bearing, preceding mechanical seal, drive end bearing bracket, rotor, the pump housing, bonnet, bonnet outside framework oil seal, bonnet bearing, water
Cold outside framework oil seal, water cooling mechanical seal and water cooling extension shaft etc. form, sealing and rotor when being run well for guarantee vavuum pump
Cooling, be provided with many obturators in the inlet end (i.e. rear end) of pump and inner side, due to have contact rub sealing
Parts Breakdown rate is of a relatively high, therefore the failure caused by the more leakages of part will increase, and this allows for present vavuum pump
Easily there is problems with：First, inlet end seal failure rate height causes to reveal, so as to pollute pump chamber and grease-box, make into
The bearing lubrication failure of gas end support, causes to cause vacuum pump failure by bearing damage；Second, between the level of dry pump caused by compression
The heat of compression easily causes vacuum pump rotor thermal expansion to break down, thus takes the cold structure out of inlet end setting and solve this kind of ask
Topic, but this interior cold structure needs potted component, adds the risk of seal leakage again, once leakage, which occurs, will pollute pump chamber
The cleaning of work and lubricating oil, make the bearing lubrication failure of inlet end support rotor, cause bearing damage to produce failure；Third,
The exhaust end of dry pump is adjacent with the fuel tank for lubricating bearing, and the outside framework oil seal both ends pressure difference of leakproof fuel cell is very big, and this big pressure difference is led
The dangerous of seal leakage is caused, once leakage causes lubricant pollution, failure, triggers the vacuum pump failure of bearing damage.
The content of the invention
Deficiency of the prior art, the problem to be solved in the present invention are more than：It is reasonable in design to provide one kind, it is close
It is good to seal effect, service life length, it is possible to increase the operational reliability and stability of vavuum pump, thoroughly exclude inlet end leakage and turn
The risk of cold leakage in son, exhaust end and the pressure difference at outside framework oil seal both ends are balanced, the horizontal oil-free for reducing disclosure risk is in line true
Empty pump.
The technical solution adopted for the present invention to solve the technical problems is：
The described in line vavuum pump of horizontal oil-free, including the pump housing and rotor, rotor are arranged on armature spindle, and rotor is arranged on
In the pump housing, the rear end of the pump housing sets bonnet, after cover and be provided with air inlet, the front end of the pump housing sets drive end bearing bracket, is set in drive end bearing bracket
Put when double section dynamic sealing assemblies operate to the pump chamber and armature spindle of the pump housing and seal, outside framework oil seal, front end are set in drive end bearing bracket
Lid bottom is provided with exhaust outlet, sets end cap to return gas port simultaneously on drive end bearing bracket, end cap returns gas port and is connected by pipeline with exhaust outlet
Logical, drive end bearing bracket is anterior to set drive end bearing bracket bearing, and for drive end bearing bracket bearing holder (housing, cover) on armature spindle, drive end bearing bracket front end sets protecgulum, protecgulum
Upper setting Front Cover Bearing, Front Cover Bearing are sleeved on armature spindle, and rotor and armature spindle pass through drive end bearing bracket bearing and Front Cover Bearing
Coordinate support to operate, synchromesh gear and oil collector be set on the armature spindle on the inside of protecgulum, set oil collector to receive oilhole on oil collector,
Oil collector receives oilhole and the armature spindle that is arranged on armature spindle is received oilhole and is connected, armature spindle receipts oilhole with it is cold inside armature spindle
But pipe is connected, and the cooling tube spill port of cooling tube is connected with the oil back chamber on the inside of armature spindle, and corresponding oil back chamber is in protecgulum
Armature spindle spill port is set on the armature spindle of side.
The horizontal in line vacuum pump structure of oil-free is reasonable in design, by the tight fit of bonnet and the pump housing that inlet end is completely close
Envelope, improves sealing effectiveness, eliminates the risk of inlet end leakage, it is possible to increase the operational reliability and stability of vavuum pump,
Simultaneously by the cooperation of oil collector and cooling tube and annex, the risk of cold leakage in rotor is thoroughly eliminated, vacuum can be ensured
The high reliability that pump operates for a long time, extend the service life of vavuum pump.End cap return gas port be designed to reduce fuel tank it is close
The pressure difference at sealing both ends, greatly reduce the disclosure risk of oil.Meanwhile in the exhaust end of vavuum pump, one section in protecgulum of armature spindle
In be provided with and receive oilhole, and be provided with receiving the oil collector that communicates of oilhole on armature spindle, taken in lubricating oil by oil collector
Cooling tube built in armature spindle, returned from the spill port of cooling tube, cool down armature spindle and rotor, by lubricating oil by heat band
Walk, it is possible to increase cooling effect, thoroughly exclude rotor disclosure risk caused by cooling sealing device.
Further preferred, described rotor and armature spindle are that split settings or integrative-structure are set.
Further preferably bonnet is bolted on the pump housing, is fitted close with pump housing inlet end and is eliminated air inlet
The disclosure risk at end, air inlet are arranged on the centre position of bonnet.
Further preferred, protecgulum bottom sets tank cooler.Will be oily in fuel tank by the cooling water circulation of outside
Heat is taken away, and the lubricating oil for cooling medium is cooled down.
Further preferably the pump housing sets pump housing cooling chamber, and caused heat cools down in being operated to vavuum pump.
Further preferred, double sections of dynamic sealing assemblies include backplate and oil baffle disc, are set gradually between backplate and oil baffle disc
There are piston ring bushing A and piston ring bushing B, all grooves, piston ring bushing A are respectively provided with piston ring bushing A and piston ring bushing B
With piston ring A and piston ring B are respectively arranged with the groove on piston ring bushing B.Double sections of dynamic sealing assemblies can be in vavuum pump
Isolate canned pump chamber during operating, improve sealing effectiveness, avoid revealing.
Further preferred, piston ring bushing A and piston ring bushing B are arranged to hierarchic structure, improve sealing effectiveness.
Further preferred, the distance between drive end bearing bracket bearing and Front Cover Bearing are more than the axial length of rotor.
Further preferred, the distance between drive end bearing bracket bearing and Front Cover Bearing are 1.3-the 1.8 of the axial length of rotor
Times.
Further that disc is preferably set on the armature spindle on the inside of protecgulum, disc is set close to Front Cover Bearing.Get rid of oil
The oil that disk has been got rid of when operating is lubricated to Front Cover Bearing.
Beneficial effect is possessed by the present invention：
1st, inlet end (i.e. rear end) is designed as the tight of bonnet and the pump housing by the in line vavuum pump of horizontal oil-free of the present invention
Inlet end is fully sealed for close fit, eliminates the risk of inlet end leakage, eliminates the seal failure rate of dry pump inlet end, keep away
The pollution of pump chamber and grease-box caused by having exempted from leakage, because rear end bearing-free is set, greatly reduce because rear end bearing damages
Vacuum pump failure caused by bad, ensure that the stability and reliability of vavuum pump longtime running.
2nd, the in line vavuum pump of horizontal oil-free of the present invention receives oil by pump housing cooling chamber, tank cooler, armature spindle
The setting of device and cooling tube, it is not only able to ensure the cooling effect of vavuum pump running, it is thus also avoided that the use of seal, it is thorough
Bottom excludes rotor disclosure risk caused by cooling sealing device, improves the service life of equipment.
3rd, the in line vavuum pump of horizontal oil-free of the present invention is provided with drive end bearing bracket and returns gas port, returns gas port and moves double sections
The space in drive end bearing bracket between seal assembly and outside framework oil seal is connected by pipeline with exhaust outlet, substantially reduces skeleton oil
The pressure difference at both ends is sealed, disclosure risk is reduced, avoids the occurrence of failure, there is stronger practicality.
4th, the in line vacuum pump structure of horizontal oil-free of the present invention is reasonable in design, good sealing effect, service life length, thorough
Bottom eliminates the risk of inlet end leakage and the leakage of rotor cooling device, balances exhaust end and the pressure difference at outside framework oil seal both ends,
So as to reduce disclosure risk, the high reliability that vavuum pump operates for a long time can be ensured.
Brief description of the drawings
Fig. 1 is the structural representation one of the present invention；
Fig. 2 is the structural representation two of the present invention；
Fig. 3 is the structural representation of oil collector of the present invention；
Fig. 4 is Fig. 3 of the present invention A-A sectional views；
Fig. 5 is the structural representation of the double section dynamic sealing assemblies of the present invention；
Fig. 6 is the rotor inner cool tube road schematic diagram of the present invention；
Fig. 7 is the tank cooler structural representation of the present invention；
Fig. 8 is the top view of the tank cooler of the present invention；
Fig. 9 is the structural representation of existing vavuum pump；
Wherein, 1, armature spindle；2nd, disc；3rd, protecgulum；4th, oil collector receives oilhole；5th, synchromesh gear；6th, armature spindle oil return
Hole；7th, outside framework oil seal；8th, drive end bearing bracket；9；End cap returns gas port；10th, double sections of dynamic sealing assemblies；11st, pump housing cooling chamber；12nd, the pump housing；
13rd, bolt；14th, rotor；15th, bonnet；16th, air inlet；17th, cooling tube spill port；18th, cooling tube；19th, oil back chamber；20th, it is vented
Mouthful；21st, drive end bearing bracket bearing；22nd, tank cooler；23rd, oil collector；24th, armature spindle receives oilhole；25th, Front Cover Bearing；26th, backplate；
27th, piston ring bushing A；28th, piston ring A；29th, piston ring B；30th, piston ring bushing B；31st, oil baffle disc.
Embodiment
Embodiments of the invention are described further below in conjunction with the accompanying drawings：
As shown in figures 1-8, the in line vavuum pump of horizontal oil-free of the present invention, including the pump housing 12 and rotor 14, rotor 14
It is arranged on armature spindle 1, rotor 14 and armature spindle 1 are that split settings or integrative-structure are set, and rotor 14 is arranged in the pump housing 12,
The pump housing 12 sets pump housing cooling chamber 11, and caused heat cools down in being operated to vavuum pump, and the rear end of the pump housing 12 sets bonnet
15, air inlet 16 is provided with bonnet 15, and bonnet 15 is fixed on the pump housing 12 by bolt 13, and air inlet is provided with bonnet 15
16, air inlet 16 is arranged on the centre position of bonnet 15, and the front end of the pump housing 12 sets drive end bearing bracket 8, sets double sections to move in drive end bearing bracket 8
Seal assembly 10 is sealed when being operated to the pump chamber and armature spindle 1 of the pump housing 12, and outside framework oil seal 7, drive end bearing bracket are set in drive end bearing bracket 8
8 bottoms are provided with exhaust outlet 20, set end cap to return gas port 9 simultaneously on drive end bearing bracket 8, end cap returns gas port 9 by pipeline and exhaust outlet
20 are connected, and reduce the pressure difference at the both ends of outside framework oil seal 7, reduce disclosure risk, the air inlet 16 that the bottom of drive end bearing bracket 8 is set and row
Gas port 20 is connected, and drive end bearing bracket 8 is anterior to set drive end bearing bracket bearing 21, and drive end bearing bracket bearing 21 is sleeved on armature spindle 1, drive end bearing bracket 8
Front end sets protecgulum 3, sets Front Cover Bearing 25 on protecgulum 3, Front Cover Bearing 25 is sleeved on armature spindle 1, rotor 14 and armature spindle 1
Operating is supported by the cooperation of drive end bearing bracket bearing 21 and Front Cover Bearing 25, wherein, drive end bearing bracket bearing 21 is to fix end bearing, protecgulum
Bearing 25 is travelling end bearing, makes rotor that cantilever operating condition, the bottom of protecgulum 3 be presented by fixed end bearing and travelling end bearing
Tank cooler 22 is set, disc 2, synchromesh gear 5 and oil collector 23, oil collector 23 are set on the armature spindle 1 of the inner side of protecgulum 3
Upper setting oil collector receives oilhole 4, and oil collector is received oilhole 4 and is connected with the armature spindle receipts oilhole 24 being arranged on armature spindle 1, rotor
Axle is received oilhole 24 and is connected with the cooling tube 18 inside armature spindle 1, cooling tube spill port 17 and the inner side of armature spindle 1 of cooling tube 18
Oil back chamber 19 be connected, corresponding oil back chamber 19 sets armature spindle spill port 6 on the armature spindle 1 of the inner side of protecgulum 3.
The distance between described drive end bearing bracket bearing 21 and Front Cover Bearing 25 are more than the axial length of rotor 14, wherein excellent
Choosing, the distance between drive end bearing bracket bearing 21 and Front Cover Bearing 25 are 1.3-1.8 times of the axial length of rotor 14.
As shown in figure 5, described double section dynamic sealing assemblies 10 include backplate 26 and oil baffle disc 31, backplate 26 and oil baffle disc 31
Between be disposed with piston ring bushing A27 and piston ring bushing B30, be all provided with piston ring bushing A27 and piston ring bushing B30
Put all grooves, piston ring A28 and piston ring are respectively arranged with the groove on piston ring bushing A27 and piston ring bushing B30
B29, piston ring bushing A27 and piston ring bushing B30 are arranged to hierarchic structure.
The present invention operation principle and use process：
The described in line vavuum pump of horizontal oil-free includes power rotor and driven rotor, power rotor and driven rotor difference
It is sleeved on power rotor axle and driven rotor axle, intermeshing synchronization is set respectively on power rotor axle and driven rotor axle
Driving gear and driven gear.In use, motor driving power rotor axle and by the engagement of synchromesh gear with it is driven
Set sealing structure on armature spindle run-in synchronism, power rotor axle and driven rotor axle, cooling structure and spring bearing
Structure is identical.Gas enters pump chamber through air inlet 16, exhaust end is pushed into through birotor (power rotor and driven rotor), from exhaust
Mouth 20 is discharged, and the double section dynamic sealing assemblies 10 of pump chamber exhaust side have good dynamic sealing to act on, and can effectively prevent exhaust leakage,
The suction of double 10 space gases adjacent with outside framework oil seal 7 of section dynamic sealing assembly can be stopped simultaneously；End cap is set on drive end bearing bracket 8
Gas port 9 is returned, return gas port 9 by end cap is connected with exhaust outlet 20, can reduce the pressure difference at the both ends of fuel tank outside framework oil seal 7, significantly
Reduce the disclosure risk of oil.In vavuum pump operating on the one hand caused heat is cooled down by the water cooling of pump housing cooling chamber 11,
On the other hand the cooperation of oilhole 24 is received by oil collector 23 and armature spindle, will be cold inside the lubricating oil income armature spindle in fuel tank
But in pipe 18, cooling oil flow to the other end of cooling tube 18, enters in oil back chamber 19 and returns to turning from cooling tube spill port 17
Son 14 is cooled down, and outflows back to fuel tank by the armature spindle spill port 6 on the inboard rotor axle 1 of protecgulum 3, tank cooler 22 is right
Oil return is cooled down, and tank cooler 22 is taken away heat oily in fuel tank by the cooling water circulation of outside, can also be passed through
The lubricating oil that disc 2 and synchromesh gear 5 have been got rid of when operating is lubricated to Front Cover Bearing 25 and drive end bearing bracket bearing 21.
Reasonable in design, practical, good sealing effect of the invention, service life length, thoroughly eliminates inlet end and lets out
The risk of cold leakage, balances exhaust end and the pressure difference at outside framework oil seal both ends, so as to reduce disclosure risk, reaches in dew and rotor
The high reliability that vavuum pump operates for a long time.
The present invention is not limited in above-mentioned embodiment, essential scope of the those of ordinary skill in the art in the present invention
The variations, modifications, additions or substitutions inside made, it should also belong to protection scope of the present invention.
Claims (10)
1. a kind of in line vavuum pump of horizontal oil-free, including the pump housing (12) and rotor (14), rotor (14) are arranged on armature spindle (1)
On, rotor (14) is arranged in the pump housing (12), it is characterised in that：The rear end of the pump housing (12) sets bonnet (15), on bonnet (15)
Air inlet (16) is provided with, the front end of the pump housing (12) sets drive end bearing bracket (8), double section dynamic sealing assemblies are set in drive end bearing bracket (8)
(10) sealed when the pump chamber to the pump housing (12) and armature spindle (1) operate, outside framework oil seal (7), front end are set in drive end bearing bracket (8)
Lid (8) bottom is provided with exhaust outlet (20), sets end cap to return gas port (9) simultaneously on drive end bearing bracket (8), end cap returns gas port (9) and passed through
Pipeline is connected with exhaust outlet (20), and drive end bearing bracket (8) is anterior to set drive end bearing bracket bearing (21), and drive end bearing bracket bearing (21), which is sleeved on, to be turned
On sub- axle (1), drive end bearing bracket (8) front end sets protecgulum (3), and Front Cover Bearing (25), Front Cover Bearing (25) suit are set on protecgulum (3)
On armature spindle (1), rotor (14) and armature spindle (1) support fortune by the cooperation of drive end bearing bracket bearing (21) and Front Cover Bearing (25)
Turn, set synchromesh gear (5) and oil collector (23), oil collector that oil collector is set on (23) on the armature spindle (1) on the inside of protecgulum (3)
Oilhole (4) is received, oil collector is received oilhole (4) and is connected with the armature spindle receipts oilhole (24) being arranged on armature spindle (1), and armature spindle is received
Oilhole (24) cooling tube (18) internal with armature spindle (1) is connected, the cooling tube spill port (17) and rotor of cooling tube (18)
Oil back chamber (19) on the inside of axle (1) is connected, and corresponding oil back chamber (19) sets rotor on the armature spindle (1) on the inside of protecgulum (3)
Axle spill port (6).
2. the in line vavuum pump of horizontal oil-free according to claim 1, it is characterised in that：Described rotor (14) and armature spindle
(1) set for split settings or integrative-structure.
3. the in line vavuum pump of horizontal oil-free according to claim 1, it is characterised in that：Described bonnet (15) passes through bolt
(13) it is fixed on the pump housing (12), air inlet (16) is arranged on the centre position of bonnet (15).
4. the in line vavuum pump of horizontal oil-free according to claim 1, it is characterised in that：The described pump housing (12) sets the pump housing
Cooling chamber (11).
5. the in line vavuum pump of horizontal oil-free according to claim 1, it is characterised in that：Described protecgulum (3) bottom is set
Tank cooler (22), is cooled down to the lubricating oil for cooling medium.
6. the in line vavuum pump of horizontal oil-free according to claim 1, it is characterised in that：Described double section dynamic sealing assemblies
(10) include backplate (26) and oil baffle disc (31), piston ring bushing A is disposed between backplate (26) and oil baffle disc (31)
(27) all grooves, piston lining papers and on piston ring bushing B (30), piston ring bushing A (27) and piston ring bushing B (30) are respectively provided with
Piston ring A (28) and piston ring B (29) are respectively arranged with groove on set A (27) and piston ring bushing B (30).
7. the in line vavuum pump of horizontal oil-free according to claim 6, it is characterised in that：Described piston ring bushing A (27)
Hierarchic structure is arranged to piston ring bushing B (30).
8. the in line vavuum pump of horizontal oil-free according to claim 1, it is characterised in that：Described drive end bearing bracket bearing (21) and
The distance between Front Cover Bearing (25) is more than the axial length of rotor (14).
9. the in line vavuum pump of horizontal oil-free according to claim 8, it is characterised in that：Described drive end bearing bracket bearing (21) and
The distance between Front Cover Bearing (25) is 1.3-1.8 times of the axial length of rotor (14).
10. the in line vavuum pump of horizontal oil-free according to claim 1, it is characterised in that：Turn on the inside of described protecgulum (3)
Disc (2) is set on sub- axle (1), and disc (2) is set close to Front Cover Bearing (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711147310.6A CN107762849A (en) | 2017-11-17 | 2017-11-17 | The horizontal in line vavuum pump of oil-free |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711147310.6A CN107762849A (en) | 2017-11-17 | 2017-11-17 | The horizontal in line vavuum pump of oil-free |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107762849A true CN107762849A (en) | 2018-03-06 |
Family
ID=61278254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711147310.6A Withdrawn CN107762849A (en) | 2017-11-17 | 2017-11-17 | The horizontal in line vavuum pump of oil-free |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107762849A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488565A (en) * | 2018-12-12 | 2019-03-19 | 江阴爱尔姆真空设备有限公司 | A kind of exhaust structure of vacuum pump |
| CN116006464A (en) * | 2023-02-03 | 2023-04-25 | 安徽应流机电股份有限公司 | Special air-cooled Roots vacuum pump |
| CN116696770A (en) * | 2023-06-15 | 2023-09-05 | 深圳市大成精密设备股份有限公司 | Vacuum pump |
-
2017
- 2017-11-17 CN CN201711147310.6A patent/CN107762849A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488565A (en) * | 2018-12-12 | 2019-03-19 | 江阴爱尔姆真空设备有限公司 | A kind of exhaust structure of vacuum pump |
| CN116006464A (en) * | 2023-02-03 | 2023-04-25 | 安徽应流机电股份有限公司 | Special air-cooled Roots vacuum pump |
| CN116006464B (en) * | 2023-02-03 | 2024-02-23 | 安徽应流机电股份有限公司 | Special air-cooled Roots vacuum pump |
| CN116696770A (en) * | 2023-06-15 | 2023-09-05 | 深圳市大成精密设备股份有限公司 | Vacuum pump |
| CN116696770B (en) * | 2023-06-15 | 2024-02-06 | 深圳市大成精密设备股份有限公司 | Vacuum pump |
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Application publication date: 20180306 |
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| WW01 | Invention patent application withdrawn after publication |