CN2489117Y - Horizontal box-opening multistage double-claw type rotor oil-free vacuum pump - Google Patents
Horizontal box-opening multistage double-claw type rotor oil-free vacuum pump Download PDFInfo
- Publication number
- CN2489117Y CN2489117Y CN 01232818 CN01232818U CN2489117Y CN 2489117 Y CN2489117 Y CN 2489117Y CN 01232818 CN01232818 CN 01232818 CN 01232818 U CN01232818 U CN 01232818U CN 2489117 Y CN2489117 Y CN 2489117Y
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- pump
- pump housing
- claw type
- double
- type rotor
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Abstract
The utility model provides an oilless vacuum pump in horizontal opened multi-stage double-claw type, belonging to the field of the vacuum technological device, which essentially comprises a sealing device, a pump, double-claw type rotor pair, a synchronous gear and a driving motor part; wherein, the pump takes an open structure, namely, the pump is formed by combining the symmetrical upper half pump and the lower half pump, the isolation boards form the multi-stage pump cavity, and each stage of the pump cavity is internally provided a pair of suspension double-claw type rotors, and the position relation in the multi-stage pump cavity is a horizontal serial composite structure. In condition of promising no oil pollution in vacuum environment, the utility model can extract mass condensable gas and inflammable and explosive gas(including the solvent gas), the range of extracting speed is between 0.5 l/s to 500 l/s. Moreover, the vacuum pump can be used singly and also used as the front-stage pump of the oilless medium and high vacuum pumps, forming an oilless medium and high vacuum unit. The utility model has the advantages of simple structure, small volume, slight vibration, low noise(50 db to 60 db), long service life and simple maintenance.
Description
Technical field
The utility model belongs to the vacuum technique apparatus field, specially refers to a kind of horizontal multistage double-claw type rotor oil-free vacuum pump of unpacking.
Background technique
At present, as being applied to requisite capital equipment---vacuum pump in the vacuum technique equipment, constantly update is weeded out the old and bring forth the new along with the develop rapidly of scientific and technological progress, and vacuum pump has been widely used in fields such as nuclear industry, Aeronautics and Astronautics, electronics, semiconductor, optics, petrochemical industry, food, pharmacy, medical apparatus.Simultaneously, along with the reinforcement day by day of environmental protection consciousness, and the raising that human safety is required of medicine, food, more and more require to improve the cleanliness without any pollution degree of vacuum environment, and require noise and vibration low as much as possible.For having prior art, this improves and improved necessity.The design people has announced the combination property of multistage double-claw type rotor vacuum pump in Chinese patent 99255371.7, for making it have more superior High Voltage pumping speed, more advanced producibility and maintainability, lower noise and vibration, longer working life, and the requirement that adapts to more areas, just need improve again and the structural design of improving this class vacuum pump, this also gives the responsibility of industry technology for scientific and technological progress.
Summary of the invention
The utility model provides a kind of horizontal multistage double-claw type rotor oil-free vacuum pump of unpacking, the High Voltage speed of exhaust that remains in the prior art is low, vibration is big, noise is higher in order to overcome, it is complicated to safeguard and petrochemical industry such as not too is suitable at the problem that further improves of remaining, and development and design goes out a kind ofly to have the higher speed of exhaust under High Voltage on this basis, vibration is little, noise low and well-adapted to petrochemical industry, that combination property is more superior horizontal multistage pair of pawl rotor oil-free vacuum pump of unpacking.
The above-mentioned problem that proposes adopts following technical proposals to realize.A kind of horizontal multistage double-claw type rotor oil-free vacuum pump of unpacking, mainly comprise seal arrangement, the pump housing, the double-claw type rotor is right, synchromesh gear, the drive motor part, it is characterized in that, the described pump housing is the formula structure of unpacking, being the pump housing is combined by first pump housing and second pump housing of symmetry, the formation of multistage pump chamber is realized by each isolating plate, it is right respectively to contain a pair of double-claw type rotor that is suspending in the pump chambers at different levels, close position between the multistage pump chamber is the tandem compound structure of substantially horizontal, its first order pump chamber connects the total suction port of the pump housing, the afterbody pump chamber connects the total relief opening of the pump housing, there is gas channel to be communicated with between the pump chambers at different levels, the rotatingshaft that two substantially horizontals are laid by bearings in first pump housing of described symmetry and the combination of second pump housing---driving shaft and driven shaft, adopt the synchromesh gear transmission between the diaxon, driving mode is drive motor and driving shaft direct connection, driving shaft and driven shaft drive that rotor synchronous backwards at different levels are moving to be changeed, and completely cut off lubricant oil in the gear-box and the front end bearing lubrication pollution to pump chamber by seal arrangement.
Total exhaust ports of the described pump housing is equipped with silencer, and this device is cut down by exhaust and baffler is formed.
Good effect of the present utility model is, it can guarantee that vacuum environment do not have under the situation of oil pollution, extract condensable gas, flammable explosive gas (comprising solvent based gas) in a large number, simultaneously also can extract the gas that contains a large amount of dust and particle, kind, character to pumped gas are unrestricted, and its upper limit (UL) degree of vacuum can reach 3Pa.Because the pump housing that adopts is the formula structure of unpacking, promptly the pump housing is combined by first pump housing and second pump housing of symmetry, simplifies the structure, and makes making, installs, uses and keep in repair to be conveniently.And owing to adopt horizontal (being substantially horizontal) to arrange drive motor and driving shaft direct connection.This structure is compared with the vertical structure of announcement in the patent 99255371.7, though the rotating speed of pump becomes identical, but horizontal associated mode has reduced by two gears in Transmitted chains, thereby reduced noise significantly, and make the stressed of gear and wearing and tearing more reasonable, so can increase the service life, experimental result shows that this vacuum pump has higher ultimate vacuum and has higher pumping speed in the High Voltage zone, the pumping speed scope is 0.5l/s～500l/s, thereby the using scope of vacuum pump is obviously widened, be applicable to that the cleanliness without any pollution of every profession and trade vacuumizes requirement.This vacuum pump both can use separately, also can be used as the fore pump that does not respectively have oily middle and high vacuum pump, formed no oily middle and high vacuum unit with it.This vacuum pump structure is simple, volume is little, vibration is little, low (50db～60db), life-span are long, and safeguard simple and easy for noise.
Description of drawings
Fig. 1 is the horizontal two pawl rotor oil-free vacuum pump cross-sectional view of unpacking of level Four.
Fig. 2 is the B-B section of Fig. 1, the i.e. working state schematic representation of double-claw type rotor.
Fig. 3 is the top cross-sectional view of Fig. 1.
Embodiment
Provide embodiment by Fig. 1, Fig. 2, Fig. 3, what provide among its Fig. 1 is embodiment's schematic representation of a quaternary structure.Wherein: the filter 2 of total suction port, cover 3, apical axis bearing 4 are held 5 with apical axis and are being supported driving shaft 16 (being AX) and driven shaft 16a (being AX ') respectively, and they are laid for level.The pumped gas that enters overhead guard enters first order pump chamber by top board air flue 6.The circulation water channel 7 that the pump housing 30 is built-in, gas channel 8 be for connecting the gas channel of each pump chamber, and pumped gas is discharged the pump housings 30 through compression step by step after exhaust cuts down 9, discharges fully after the baffler noise reduction.The listed a pair of double-claw type rotor of Fig. 2 is right, each double-claw type rotor comprises two evagination monodactyles 11 of position symmetry, the concave arc groove 13 of two position symmetries constitutes the double-claw type rotor with corresponding outer dog, it is right that per two two pawl rotors are formed a rotor, interpolar relief opening and interpolar suction port are respectively 12 and 14,15 is gas locking device, and these are the core of vacuum pump.17,18,19 are respectively preceding sealing, primary seal and back Sealing among Fig. 3, and it is general Sealing, installs according to a conventional method, does not have oil pollution to guarantee pump chamber and external environment.Driving shaft 16 and driven shaft 16a, apical axis hold 5 and the support of main bearing 24 under, by coupling 26, drive rotors 20 at different levels, 20a, 21,21a, 22,22a, 23,23a by drive motor 27, do the synchronous backward running to reach the purpose of bleeding by driving gear 25 and driven gear 28.The whole pump housing 30 horizontal positioned, by the pump housing 30 is the support of total benchmark, by top board 29, dividing plate 31,32,33,34 form pump chambers at different levels, main bearing seat 36 is the support benchmark of driving shaft 16 and driven shaft 16a, benchmark is the basis thus, at first with driving shaft 16, driven shaft 16a and rotor at different levels 20,20a, 21,21a, 22,22a, 23,23a, main bearing seat 36, main bearing 24 assembles on special tooling, the pump housing 30 that installs in advance of then diaxon integral body being packed into is in the support of total benchmark, because the pump housing 30 is the formula structure of unpacking, being the pump housing 30 is combined by first pump housing 1 and second pump housing 1a of symmetry, so need refill the built-up section of upper pump casing 30, then cover top board 29, load onto apical axis bearing 4, apical axis holds 5 and cover 3, can be made into a kind of horizontal multistage double-claw type rotor oil-free vacuum pump of unpacking.
Claims (2)
1, a kind of horizontal multistage double-claw type rotor oil-free vacuum pump of unpacking, mainly comprise seal arrangement, the pump housing, the double-claw type rotor is right, synchromesh gear, the drive motor part, it is characterized in that, the described pump housing is the formula structure of unpacking, being the pump housing is combined by first pump housing and second pump housing of symmetry, the formation of multistage pump chamber is realized by each isolating plate, it is right respectively to contain a pair of double-claw type rotor that is suspending in the pump chambers at different levels, close position between the multistage pump chamber is the tandem compound structure of substantially horizontal, its first order pump chamber connects the total suction port of the pump housing, the afterbody pump chamber connects the total relief opening of the pump housing, there is gas channel to be communicated with between the pump chambers at different levels, the rotatingshaft that two substantially horizontals are laid by bearings in first pump housing of described symmetry and the combination of second pump housing---driving shaft and driven shaft, adopt the synchromesh gear transmission between the diaxon, driving mode is drive motor and driving shaft direct connection, driving shaft and driven shaft drive that rotor synchronous backwards at different levels are moving to be changeed, and completely cut off lubricant oil in the gear-box and the front end bearing lubrication pollution to pump chamber by seal arrangement.
2, oil-free vacuum pump according to claim 1 is characterized in that, total exhaust ports of the described pump housing is equipped with silencer, and this device is cut down by exhaust and baffler is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01232818 CN2489117Y (en) | 2001-08-06 | 2001-08-06 | Horizontal box-opening multistage double-claw type rotor oil-free vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01232818 CN2489117Y (en) | 2001-08-06 | 2001-08-06 | Horizontal box-opening multistage double-claw type rotor oil-free vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2489117Y true CN2489117Y (en) | 2002-05-01 |
Family
ID=33646796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01232818 Expired - Fee Related CN2489117Y (en) | 2001-08-06 | 2001-08-06 | Horizontal box-opening multistage double-claw type rotor oil-free vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2489117Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439716C (en) * | 2002-12-31 | 2008-12-03 | 北京依品非标准设备有限公司 | Involute and straight claw type rotor structure for oilless vacuum pump |
| CN101718285B (en) * | 2009-12-04 | 2013-03-27 | 山东省青岛生建机械厂 | Tri-spindle synchronizer |
| CN113864187A (en) * | 2021-08-22 | 2021-12-31 | 凡司流体技术(上海)有限公司 | Dry vacuum pump without oil claw |
-
2001
- 2001-08-06 CN CN 01232818 patent/CN2489117Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439716C (en) * | 2002-12-31 | 2008-12-03 | 北京依品非标准设备有限公司 | Involute and straight claw type rotor structure for oilless vacuum pump |
| CN101718285B (en) * | 2009-12-04 | 2013-03-27 | 山东省青岛生建机械厂 | Tri-spindle synchronizer |
| CN113864187A (en) * | 2021-08-22 | 2021-12-31 | 凡司流体技术(上海)有限公司 | Dry vacuum pump without oil claw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |