CN206647264U - A kind of space claw shape dry type vacuum pump - Google Patents
A kind of space claw shape dry type vacuum pump Download PDFInfo
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- CN206647264U CN206647264U CN201720088609.8U CN201720088609U CN206647264U CN 206647264 U CN206647264 U CN 206647264U CN 201720088609 U CN201720088609 U CN 201720088609U CN 206647264 U CN206647264 U CN 206647264U
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- rotor
- dry type
- vacuum pump
- type vacuum
- claw shape
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Abstract
The utility model belongs to pumping equipment field, more particularly to a kind of space claw shape dry type vacuum pump, to solve in the prior art the defects of lubricant effect is bad, and the vacuum efficiency of pump is relatively low.Including the pump housing, motor, muffler, synchromesh gear, rotor, active shafting and driven shafting, rotor uses asymmetric unusual rotor, including power rotor and driven rotor, rotor to be located in rotor chamber.Power rotor and driven rotor outer surface and rotor inner cavity surface are coated with self-lubricating coat in use.Synchromesh gear is located in gear cavity, and synchromesh gear surface spraying has properties of solid self-lubricant coating and the low volatilization lubricating grease of vacuum.
Description
Technical field
The utility model belongs to pumping equipment field, more particularly to a kind of space claw shape dry type vacuum pump.
Background technology
As conventional pumping equipment, equal nothing between pawl-type dry vacuum pump rotor pair and between rotor pair and pump chamber
Friction, without oily phenomenon is returned, overall efficiency is high.Chinese patent was once disclosed a variety of claw shape dry type vacuum pumps, such as：Utility model is special
The sharp A of CN 102287375 disclose a kind of claw type vertical oilless vacuum pump, and the U of utility model patent CN 201843783 are disclosed
A kind of claw oilless vacuum pump, utility model patent CN 101033747A disclose a kind of pawl-type dry vacuum pump rotor, existing
The structural shape, molded lines of rotor, sealing structure of claw shape dry type vacuum pump are all carried out more in detail illustrating in patent, still
Many utility models are lubricated cooling using grease-box to travelling gear and bearing, to the reliability requirement of oil enveloping structure
It is higher；Meanwhile existing big multi-claw type vacuum pump rotor causes vavuum pump more using monodactyle structure and without corresponding lubricant method
It is less efficient.The features such as the particular/special requirement of space environment product, such as highly reliable, high efficiency, lighting, existing product is not
The requirement of space environment can be met.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of space claw shape dry type vacuum pump, existing to solve
There is the defects of lubricant effect in technology is bad, and the vacuum efficiency of pump is relatively low.
In order to solve the above technical problems, technical scheme is used by the utility model：
A kind of space claw shape dry type vacuum pump, including the pump housing, motor, muffler, synchromesh gear, rotor, active
Shafting and driven shafting, it is characterized in that：The rotor uses asymmetric unusual rotor, including power rotor and from turn
Son, the rotor are located in rotor chamber.
Further, power rotor and the driven rotor outer surface and rotor inner cavity surface are coated with self-lubricating painting
Layer.
Further, the synchromesh gear is located in gear cavity, synchromesh gear surface spraying have properties of solid self-lubricant coating and
The low volatilization lubricating grease of vacuum.
Further, it is provided with piston ring between the rotor chamber and gear cavity.
Further, the active shafting and driven shaft, which are fastened, is provided with angular contact ball bearing and deep groove ball bearing, institute
State angular contact ball bearing and deep groove ball bearing and be filled with vacuum low volatility lubricating grease.
Further, the angular contact ball bearing selects double-row bearing.
Further, the pump housing and muffler use aluminium alloy or titanium alloy material.
Claw shape dry type vacuum pump described in the utility model is had the advantage that with good effect such as compared with conventional art
Under：The vacuum pump body rotor chamber, power rotor and driven rotor spraying self-lubricating coat in use, improve vavuum pump reliable operation
Property, improve the vacuum efficiency of pump using asymmetric unusual rotor；Synchromesh gear oil-free lubrication, eliminate liquid under weightlessness and climb
Attached hidden danger, synchromesh gear functional reliability is improved using self-lubricating coat in use and the composite lubricated of lubricating grease；Spring bearing is selected
The self-lubricating bearing of packing grease, it ensure that the long-term reliably working of bearing；The vacuum pump part is largely using high intensity, low close
The titanium alloy and aluminum alloy materials of degree, hence it is evident that reduce product weight.
Brief description of the drawings
Fig. 1 is the utility model embodiment monnolithic case structural representation；
Fig. 2 is the utility model embodiment entirety cross-sectional structure schematic diagram；
Fig. 3 is the utility model embodiment active shafting cross-sectional structure schematic diagram；
Fig. 4 is the driven shafting cross-sectional structure schematic diagram of the utility model embodiment；
Fig. 5 is the utility model embodiment power rotor and driven rotor structural representation；
In figure, 1-motor；2-end cover；3-pump housing；4-suspension ring；5-air inlet pipeline；6-pump end cap；
7-gear cavity cover plate；8-silencer；9-locking nut；10-little axle sleeve；11-large shaft sleeve；12-synchromesh gear；13-pass
Dynamic flat key；14-angular contact ball bearing；15-rubber ring；16-power rotor；17-compress axle cap；18-housing screw；
19-piston ring；20-piston ring axle sleeve；21-driving shaft；22-deep groove ball bearing；23-sealing ring；24-driven shaft compression axis
Cap；25-driven rotor；26-driven shaft；27-driven shafting；28-O-shaped rubber ring；29-holddown plate；30-driving shaft
System；31-shaft coupling；32-electric connector.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments：
As shown in figure 1, the utility model embodiment provides a kind of space claw shape dry type vacuum pump, medium is sucked from entering
Air pipe 5 enters the rotor chamber of the pump housing 3, then the in line external world after the noise reduction process of silencer 8；Gear cavity cover plate 7 is logical with the pump housing 3
Cross special threaded connection；The vavuum pump is single stage rotor structure, and rotor is placed to cantilever.The pump housing 3, pump end cap 6 and silencer 8 are adopted
With the aluminium alloy or titanium alloy material that density is small, specific strength is high, product weight is reduced.The pump housing 3 uses flange with motor 1
Connection, is installed, the side of the pump housing 3 is machined with assembling window, is sealed using gear cavity cover plate 7 for ease of synchromesh gear 12；The pump housing 3 is
Cool, radiated rib is installed additional in its rotor cavity segment；The pump housing 3 is installed with pedestal using screw thread, using 4 installation supporting legs
It is attached, each supporting leg installs the auricle raising bonding strength of the pump housing 3 additional using 2 threaded connections at each supporting leg.
As shown in Fig. 2 embodiment mainly includes motor 1, the pump housing 3, pump end cap 6, active shafting 30, driven shafting
27th, end cover 2, holddown plate 29, shaft coupling 31 and suspension ring 4.1 steady work of motor is controlled by electric connector 32
Make, the type of motor 1 be DC brushless motor, and electric machine casing sets radiated rib, motor 1 by shaft coupling 31 and
Active shafting 30 is connected, and driven shafting 27 is reversely rotated using synchromesh gear 12 with active shafting 30 and transmits moment of torsion.Holddown plate
29th, the pump housing 3 forms vacuum pump rotor working field with pump end cap 6, and pump end cap 6 is carried out quiet close with the pump housing 3 using O-shaped rubber ring 28
Envelope.End cover 2 is threadedly coupled with the use of the pump housing 3, seal with elastometic washer, and static seal is carried out to the gear cavity of the pump housing 3；Suspension ring 4 and pump
3 blind threaded connection of body, it is easy to the lifting dismounting of vavuum pump product.
As shown in figure 3, active shafting 30 is mainly by locking nut 9, little axle sleeve 10, large shaft sleeve 11, synchromesh gear 12, transmission
Flat key 13, angular contact ball bearing 14, rubber ring 15, power rotor 16, compression axle cap 17, housing screw 18, piston ring 19, piston ring axle
Set 20, driving shaft 21, deep groove ball bearing 22, sealing ring 23 form.The both ends of active shafting 30 are respectively adopted locking nut 9 and compressed
Screw 18 carries out shafting pretension, and wherein locking nut 9 uses dual pretension.Synchromesh gear 12 uses transmission flat key with driving shaft 21
13 connections, its axial location are adjusted by little axle sleeve 10 and large shaft sleeve 11, the oil-free lubrication of synchromesh gear 12, using solid certainly
Lubricant coating and the composite lubricated mode of vacuum grease improve functional reliability.Power rotor 16 is located at the tail end of driving shaft 21,
Cantilever support, with the synchronous rotary of synchromesh gear 12, it is fixed by compressing axle cap 17 and the axial compression of housing screw 18；Actively turn
Sub 16 thermal spraying on surface properties of solid self-lubricant coating.Deep groove ball bearing 22 is located at the initiating terminal of driving shaft 21, close to motor 1；Angle
Contact ball bearing 14 is located at the tail end of driving shaft 21, close to power rotor 16, wherein, angular contact ball bearing 14 selects double-row bearing.
Active shafting 30 is connected by shaft coupling 31 with motor 1.
As shown in figure 4, driven shafting 27 mainly compresses axle cap 24, deep groove ball bearing 22, large shaft sleeve 11, transmission by driven shaft
Flat key 13, angular contact ball bearing 14, piston ring 19, rubber ring 15, compression axle cap 17, housing screw 18, synchromesh gear 12, driven shaft
26th, piston ring axle sleeve 20, driven rotor 25 form.The driven both ends of shafting 27 carry out shafting pretension using housing screw 18, wherein from
Moving axis compresses axle cap 24 and compresses axle cap 17 respectively to deep groove ball bearing 22 and the axially position of angular contact ball bearing 14.Synchromesh gear
12 are connected with driven shaft 26 using transmission flat key 13, and its axial location is adjusted by large shaft sleeve 11, is ensured and active shafting
Synchromesh gear installation site is identical on 30, the oil-free lubrication of synchromesh gear 12, is answered using properties of solid self-lubricant coating and vacuum grease
Lubricating system is closed to improve reliability.Driven rotor 25 is located at the tail end of driven shaft 26, and cantilever support, it is by compressing the He of axle cap 17
The axial compression of housing screw 18 is fixed；The thermal spraying on surface properties of solid self-lubricant coating of driven rotor 25.Deep groove ball bearing 22 be located at from
The initiating terminal of moving axis 26, close to end cover 2；Angular contact ball bearing 14 is located at the tail end of driven shaft 26, close to driven rotor 25.
As shown in Figure 3-Figure 5, driven shafting 27 rotates under the driving of synchromesh gear 12 with the synchronous backward of active shafting 30,
And then drive the intake-gas of driven rotor 25 work on power rotor 16 and driven shafting 27, power rotor 16 in active shafting 30
It is as shown in Figure 5 with the appearance profile of driven rotor 25.Power rotor 16 and the type of driven rotor 25 use asymmetric unusual rotor,
Corresponding to reversely rotate, the completion that rotates a circle is inhaled twice, exhaust schedule；Power rotor 16 and driven rotor 25 respectively with the pump housing 3, pump
End cap 6 and holddown plate 29 keep fixed interval (FI) constant；Power rotor 16 and driven rotor 25 respectively with the pump housing 3, pump end cap 6 and
Holddown plate 29 uses the properties of solid self-lubricant coating of different qualities, instantaneous is collided with avoid being likely to occur during pump work
Vavuum pump performance is had an impact.Power rotor 16 and driven rotor 25 and pump in the pump housing 3, driven shafting 27 in active shafting 30
The gear cavity of body 3 is isolated using holddown plate 29, and the dynamic sealing formed using piston ring 19 and piston ring axle sleeve 20 is to the tooth of the pump housing 3
Wheel chamber and rotor chamber sealed, it is ensured that vavuum pump stable performance and discharge cleaning gas it is pollution-free.
Claims (7)
1. a kind of space claw shape dry type vacuum pump, including the pump housing, motor, muffler, synchromesh gear, rotor, driving shaft
System and driven shafting, it is characterised in that：The rotor uses asymmetric unusual rotor, including power rotor and driven rotor, institute
Rotor is stated to be located in rotor chamber.
2. space claw shape dry type vacuum pump according to claim 1, it is characterised in that：The power rotor and from turn
Sub- outer surface and rotor inner cavity surface are coated with self-lubricating coat in use.
3. space claw shape dry type vacuum pump according to claim 1 or 2, it is characterised in that：The synchromesh gear is located at
In gear cavity, synchromesh gear surface spraying has properties of solid self-lubricant coating and the low volatilization lubricating grease of vacuum.
4. space claw shape dry type vacuum pump according to claim 3, it is characterised in that：The rotor chamber and gear cavity it
Between be provided with piston ring.
5. space claw shape dry type vacuum pump according to claim 4, it is characterised in that：The active shafting and driven shaft
Fasten and be provided with angular contact ball bearing and deep groove ball bearing, the angular contact ball bearing and deep groove ball bearing are filled with vacuum
Low volatility lubricating grease.
6. space claw shape dry type vacuum pump according to claim 5, it is characterised in that：The angular contact ball bearing is selected
Double-row bearing.
7. space claw shape dry type vacuum pump according to claim 6, it is characterised in that：The pump housing and muffler use
Aluminium alloy or titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720088609.8U CN206647264U (en) | 2017-01-20 | 2017-01-20 | A kind of space claw shape dry type vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720088609.8U CN206647264U (en) | 2017-01-20 | 2017-01-20 | A kind of space claw shape dry type vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206647264U true CN206647264U (en) | 2017-11-17 |
Family
ID=60284181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720088609.8U Active CN206647264U (en) | 2017-01-20 | 2017-01-20 | A kind of space claw shape dry type vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206647264U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640638A (en) * | 2017-01-20 | 2017-05-10 | 西安航天动力研究所 | Claw-type dry vacuum pump for space |
| CN114593055A (en) * | 2020-12-07 | 2022-06-07 | 中国科学院沈阳科学仪器股份有限公司 | Multi-stage dry vacuum pump |
| US11802561B1 (en) * | 2022-07-06 | 2023-10-31 | Hangzhou Qiandao Pump Co., Ltd. | Cantilever vertical screw vacuum pump |
-
2017
- 2017-01-20 CN CN201720088609.8U patent/CN206647264U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640638A (en) * | 2017-01-20 | 2017-05-10 | 西安航天动力研究所 | Claw-type dry vacuum pump for space |
| CN114593055A (en) * | 2020-12-07 | 2022-06-07 | 中国科学院沈阳科学仪器股份有限公司 | Multi-stage dry vacuum pump |
| US11802561B1 (en) * | 2022-07-06 | 2023-10-31 | Hangzhou Qiandao Pump Co., Ltd. | Cantilever vertical screw vacuum pump |
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