CN101608619B - Spiral anti-clawed vacuum pump - Google Patents
Spiral anti-clawed vacuum pump Download PDFInfo
- Publication number
- CN101608619B CN101608619B CN2009101579203A CN200910157920A CN101608619B CN 101608619 B CN101608619 B CN 101608619B CN 2009101579203 A CN2009101579203 A CN 2009101579203A CN 200910157920 A CN200910157920 A CN 200910157920A CN 101608619 B CN101608619 B CN 101608619B
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- rotor
- level
- dividing plate
- commentaries
- pawl
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- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 210000000078 claw Anatomy 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
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Abstract
The invention relates to a spiral anti-clawed vacuum pump that comprises rotor pairs, a driving shaft, a driven shaft, a pump whole and baffles. The baffle divides an inner cavity of the pump body into various stages of pump cavities and is provided with an air inlet and an air outlet thereon; various stages of pump cavities are internally provided with various stages of spiral claw type rotor pairs, which are connected in series on the driving shaft and the driven shaft along axial direction and separated by the baffles along axial direction; angular difference and phase difference are set among the rotating claws of all the rotor pairs; the overall suction and discharge process of gas is rather smooth and at a comparatively low rotating speed, comparatively high compression ratio and obvious air exhaust effect can be achieved; and the phase difference of the rotor pairs makes up the matching of the suction and discharge of gas, and a sector gas passage increases section area and is beneficial to exhausting condensable gas and reducing energy consumption. The spiral anti-clawed vacuum pump lowers processing precision, shortens the pump body, occupies small space, saves materials, reduces cost and prolongs the service life of the pump.
Description
Technical field
The invention belongs to pump class field, relate to a kind of spiral anti-clawed vacuum pump.
Background technique
Traditional claw shape dry type vacuum pump adopts helical rotor structure or anti-pawl rotor structure usually.
Helical rotor structure is: first order rotor pair and second level rotor to and with third level rotor to being cascaded, rotors at different levels have angle difference mutually to last commentaries on classics pawl simultaneously, difference is identical; Its defective is: the distance that gas is walked in dividing plate is longer, and energy consumption is higher; Simultaneously, for guarantee gas in dividing plate flow resistance enough little, it is big as far as possible that gas channel will design, almost the thickness with the pump housing is identical so just to have caused the thickness of dividing plate, caused the material of multistage pump needs to rise significantly, and length is longer, processes all corresponding raising with Location accuracy, and manufacture cost is also higher.
Anti-pawl rotor structure is: first order rotor pair and second level rotor to and do not have angle difference with the right commentaries on classics pawl of third level rotor, but the phase place difference is arranged, be the second level rotor pair commentaries on classics pawl position opposite right with first order rotor, the third level rotor pair commentaries on classics pawl position opposite right with second level rotor, identical with the commentaries on classics pawl position that first order rotor is right, be cascaded; Its defective is: first order rotor is during to pressurized gas, second level rotor is not to being in suction condition, so, the suction port of the relief opening of first order dividing plate and second level dividing plate can not fit like a glove, have only the right commentaries on classics pawl of rotor of leaning on to misplace and remedy its phase difference, dividing plate still must keep bigger thickness, and difficulty of processing is also bigger; Simultaneously, in the exhaust of first order pump chamber, second level pump chamber and third level pump chamber all might be in the suction and discharge simultaneously of certain position, and gas backflows bigger, and comparatively speaking compression ratio is little, and the degree of vacuum of realization is low.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part, and provide a kind of level commentaries on classics pawl direction opposite be provided with right with the rotor of inter-stage, make rotor between existing angle difference, other spiral anti-clawed vacuum pump of phase difference is arranged again, the effect of bleeding is remarkable, cut down the consumption of energy, economical with materials reduces cost.
The technical solution used in the present invention: a kind of spiral anti-clawed vacuum pump, comprise that rotor is to, driving shaft, driven shaft, the pump housing, dividing plate, dividing plate is separated into pump chambers at different levels with pump housing inner chamber, dividing plate is provided with suction port, relief opening, it is right to be provided with spiral pawl type rotors at different levels in the pump chambers at different levels, rotors at different levels are to being serially connected in vertically on driving shaft, the driven shaft, and rotors at different levels are separated by by dividing plate between axially, are provided with differential seat angle and phase difference between the right commentaries on classics pawl of described rotors at different levels.
Described rotor at different levels is to when level axially is connected in series with inter-stage, it changes pawl and presses the opposite direction setting, be the second level rotor pair commentaries on classics pawl position opposite right with first order rotor, the right commentaries on classics pawl position opposite of third level rotor pair and second level rotor, identical with the right commentaries on classics pawl position of first order rotor, by that analogy, constitute two-stage, three grades or the anti-pawl structure of multiple coil.
The right commentaries on classics pawl angular difference of described rotor at different levels is 0-60 °, β is 0-60 °, level is identical with inter-stage commentaries on classics pawl angle difference, right commentaries on classics pawl angle [alpha], β is 0 ° to be first order rotor, rotor right commentaries on classics pawl angle [alpha], β in the second level is 30 °, and right commentaries on classics pawl angle [alpha], the β of third level rotor is 60.
Suction port on the described dividing plate, relief opening are fan shape, circular arc, and the relief opening of upper level dividing plate is the suction port of next stage dividing plate simultaneously.
On the dividing plate at described driving shaft, driven shaft position axle sleeve is installed.
The positive beneficial effect that the present invention had:
In the first order pump chamber gas by first order rotor when ejecting, since with the second level, third level pump chamber internal rotor to there being the angle difference and the relative position difference of changeing pawl simultaneously, make gas go out in the process very well in whole suction, gas does not backflow, so, under lower rotating speed, just can obtain higher compression ratio, the effect of bleeding is remarkable, and degree of vacuum improves;
2. because the right phase difference of rotor has remedied the suction and discharge cooperation of gas,, section area is increased, reduced residence time and the resistance of gas in pump so gas channel can be made fan-shaped gas channel;
3. do not have long gas channel in the dividing plate,, dwindled the length of the pump housing, make pump housing occupation space littler so dividing plate can be done extremely thinly;
4. adopt very short fan-shaped gas channel to reduce machining accuracy, effectively economical with materials reduces cost, and helps plating anticorrosive coating, and is beneficial to the working life that prolongs pump;
5. help taking out condensable gas, and cut down the consumption of energy, when pump intake had elevated pressures, the energy of consumption reduced significantly;
6. by experimental results demonstrate that the spiral anti-clawed reasonable in design of the present invention has overcome the deficiency that single helical rotor structure and anti-pawl rotor structure exist, guaranteed gas discharge successively step by step smoothly effectively, reach the purpose of exhaust, economical and practical, be beneficial to and popularize.
Description of drawings
Fig. 1 is the sectional view of structural representation of the present invention;
Fig. 2 is an A-A sectional view among Fig. 1;
Fig. 3 is a B-B sectional view among Fig. 1;
Fig. 4 is a C-C sectional view among Fig. 1;
Fig. 5 is a fundamental diagram of the present invention.
Embodiment
With reference to shown in Figure 1, a kind of spiral anti-clawed vacuum pump is an example with the triplex, mainly comprise rotor to 1, component such as driving shaft 2, driven shaft 3, suction port 4, relief opening 5, the pump housing 6, dividing plate 7, axle sleeve 8; The inner chamber of its pump housing 6 is separated into pump chambers at different levels by dividing plate 7, be provided with band in the pump chambers at different levels and change the rotors at different levels of pawl 1, rotors at different levels are to existing angle difference between 1 the commentaries on classics pawl, the phase place difference is arranged again, rotors at different levels to 1 key connecting at driving shaft 2, on the driven shaft 3, straight line is cascaded vertically, level is pressed the opposite direction setting with the rotor of inter-stage to 1 commentaries on classics pawl, rotors at different levels are separated by extremely thin dividing plate 7 between axially 1, dividing plate 7 is provided with fan shape, the suction port 4 of circular arc and relief opening 5, the relief opening 5 of upper level dividing plate also is the suction port 4 of next stage dividing plate simultaneously, at driving shaft 2, on the dividing plate 7 at driven shaft 3 positions axle sleeve 8 is installed.
Simultaneously with reference to Fig. 2, Fig. 3, shown in Figure 4, described first order rotor to 1-1 and second level rotor to 1-2 and and the commentaries on classics pawl of third level rotor to 1-3 between be provided with angle difference, angle difference scope α is 0-60 °, β is 0-60 °, level is identical with the inter-stage angle difference, be 30 °, and level is provided with different relative position difference with the commentaries on classics pawl of inter-stage, be the commentaries on classics pawl angle [alpha] of first order rotor to 1-1, β is 0 °, second level rotor is to the commentaries on classics pawl angle [alpha] of 1-2, β is 30 °, third level rotor is to the commentaries on classics pawl angle [alpha] of 1-3, β is 60 °, simultaneously second level rotor is to 1-2 and the first order rotor commentaries on classics pawl position opposite to 1-1, third level rotor is to 1-3 and the second level rotor commentaries on classics pawl position opposite to 1-2, identical with first order rotor to the commentaries on classics pawl position of 1-1, by that analogy, constitute two-stage thus, three grades or the anti-pawl structure of multiple coil.
With reference to shown in Figure 5, working principle of the present invention: drive first order rotor in the first order pump chambers to the 1-1 pressurized gas by 3 rotations of driving shaft 2, driven shaft, to directly be drawn into from the gas that the suction port on the pump housing 64 enters in the first order pump chamber, discharge by the relief opening on the first order dividing plate 7-1 5; Because the relief opening 5 on the first order dividing plate 7-1 also is the suction port 4 of second level dividing plate 7-2 simultaneously,, discharge by the relief opening on the dividing plate 7-2 of the second level 5 so gas directly is drawn in the pump chamber of the second level 1-2 by second level rotor; Because the relief opening 5 on the dividing plate 7-2 of the second level also is the suction port 4 of third level dividing plate 7-3 simultaneously, so gas directly is drawn in the third level pump chamber 1-3 by third level rotor, gas in the third level pump chamber is drained by the relief opening on the pump housing 65, reach the purpose of exhaust, multistage pump and the like.Because there be the angle difference and the relative position difference of changeing pawl in rotor simultaneously to 1, and the suction port of the relief opening of first order dividing plate and second level dividing plate, reaches the relief opening of second level dividing plate and the suction port of third level dividing plate and fits like a glove, the degree of vacuum of realization improves.
Claims (4)
1. spiral anti-clawed vacuum pump, comprise that rotor is to, driving shaft, driven shaft, the pump housing, dividing plate, dividing plate is separated into pump chambers at different levels with pump housing inner chamber, dividing plate is provided with suction port, relief opening, it is right to be provided with spiral pawl type rotors at different levels in the pump chambers at different levels, rotors at different levels are to being serially connected in vertically on driving shaft, the driven shaft, and rotors at different levels are separated by by dividing plate between axially, it is characterized in that being provided with differential seat angle and phase difference between the commentaries on classics pawl of described rotor at different levels to (1); Described rotor at different levels to (1) when level axially is connected in series with inter-stage, it changes pawl and presses the opposite direction setting, be that second level rotor is to (1-2) and the commentaries on classics pawl position opposite of first order rotor to (1-1), third level rotor to (1-3) and second level rotor to the commentaries on classics pawl position opposite of (1-2), identical to the commentaries on classics pawl position of (1-1) with first order rotor, by that analogy, constitute two-stage, three grades or the anti-pawl structure of multiple coil; Described rotor at different levels is identical with inter-stage commentaries on classics pawl angle difference to the level of (1).
2. spiral anti-clawed vacuum pump according to claim 1, it is characterized in that described rotor at different levels is 0 ° to the first order rotor of (1) to commentaries on classics pawl angle [alpha], the β of (1-1), second level rotor is 30 ° to commentaries on classics pawl angle [alpha], the β of (1-2), and third level rotor is 60 ° to commentaries on classics pawl angle [alpha], the β of (1-3).
3. spiral anti-clawed vacuum pump according to claim 1, it is characterized in that suction port (4), relief opening (5) on the described dividing plate (7) are fan shape, circular arc, the relief opening (5) of upper level dividing plate (7) is the suction port (4) of next stage dividing plate (7) simultaneously.
4. spiral anti-clawed vacuum pump according to claim 1 is characterized in that on the dividing plate (7) at described driving shaft (2), driven shaft (3) position axle sleeve (8) being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101579203A CN101608619B (en) | 2009-07-16 | 2009-07-16 | Spiral anti-clawed vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101579203A CN101608619B (en) | 2009-07-16 | 2009-07-16 | Spiral anti-clawed vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608619A CN101608619A (en) | 2009-12-23 |
| CN101608619B true CN101608619B (en) | 2011-08-31 |
Family
ID=41482495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101579203A Expired - Fee Related CN101608619B (en) | 2009-07-16 | 2009-07-16 | Spiral anti-clawed vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101608619B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5284940B2 (en) * | 2009-12-24 | 2013-09-11 | アネスト岩田株式会社 | Multistage vacuum pump |
| WO2012126137A1 (en) * | 2011-03-21 | 2012-09-27 | 淄博特士德真空设备科技有限公司 | Claw type vacuum pump |
| CN105179252B (en) * | 2015-10-27 | 2017-08-04 | 易先杰 | A kind of claw shape dry type pump |
| CN109113998A (en) * | 2018-09-18 | 2019-01-01 | 世通海泰泵业（天津）股份有限公司 | It vacuumizes and uses driving device |
-
2009
- 2009-07-16 CN CN2009101579203A patent/CN101608619B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101608619A (en) | 2009-12-23 |
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Effective date of registration: 20180926 Address after: 100054 room 1003, building 3A, 88 vegetable market, Fengtai District, Beijing. Patentee after: Langhe S&.T Co., Ltd., Beijing Address before: 100054 room 1003, block A, Peng run house, 88 East Street, Fengtai District, Beijing. Patentee before: Xu Xi |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20200716 |
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| CF01 | Termination of patent right due to non-payment of annual fee |