CN203067285U - High-vacuum multi-stage roots pump - Google Patents
High-vacuum multi-stage roots pump Download PDFInfo
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- CN203067285U CN203067285U CN 201220578760 CN201220578760U CN203067285U CN 203067285 U CN203067285 U CN 203067285U CN 201220578760 CN201220578760 CN 201220578760 CN 201220578760 U CN201220578760 U CN 201220578760U CN 203067285 U CN203067285 U CN 203067285U
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- roots pump
- roots
- high vacuum
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Abstract
The utility model relates to the technical field of machinery, and particularly relates to a vacuum pump. The high-vacuum multi-stage roots pump comprises a roots pump main body, wherein an air inlet and an air outlet are arranged on the roots pump main body; the roots pump main body comprises a roots pump cavity; a base is arranged at the bottom part of the roots pump cavity; and the air inlet and the air outlet are respectively arranged at two sides of the roots pump cavity while an air inlet and an air outlet of a traditional roots pump are respectively arranged up and down. In the prior art, a plurality of single roots pumps need to be horizontally arranged because of height limit when being combined into a high-vacuum multi-stage roots pump, and a plurality of connecting pipelines and turning joints are required in the connecting process of the plurality of horizontal single roots pumps. Therefore, a system is complicated by the connecting pipelines and the turning joints, the resistance to air flow is generated, and a vacuumizing effect is also affected.
Description
Technical field
The utility model relates to field of mechanical technique, is specifically related to a kind of vacuum pump.
Background technique
Roots pump (abbreviation Roots pump) is a kind of rotary positive-displacement vacuum pump.It is developed by Roots blower.According to the difference of Roots pump operating range, be divided into the rough vacuum Roots pump of discharging directly into atmosphere again; Middle vacuum Roots pump (claiming mechanical booster pump again) and high vacuum multi-stage roots pump.
Roots pump (roots-type pump) be a kind of do not have in the vacuum pump of compression, usually compression ratio is very low, so high, intermediate pump needs fore pump.The limiting vacuum of Roots pump also depends on the limiting vacuum of fore pump except depending on this body structure of pump and accuracy of manufacturing.In order to improve the ultimate vacuum of pump, the Roots pump series connection can be used.The working principle of Roots pump is similar to Roots blower.Because the continuous rotation of rotor, pumped gas is discharged through relief opening in being drawn into space v0 between rotor and the pump case from suction port again.Because v0 space, air-breathing back is full closeding state, so, not compression and expansion of gas in pump chamber.But when rotor top turns over the relief opening edge, when the v0 space communicates with exhaust side, because the exhaust side gas pressure intensity is higher, during then some gas recoils space v0, gas pressure intensity is increased suddenly.When rotor is rotated further, outside the gas excavationg pump.Roots pump has the rotor of two figures of eight to be installed in mutual vertically on the pair of parallel axle in pump chamber, and being that 1 a pair of gear band action is reverse each other by velocity ratio rotatablely moves synchronously.Between rotor, between rotor and the pump case inwall, maintain certain clearance, can realize high rotating speed operation.
Roots pump has following characteristics: bigger pumping speed is arranged in wideer pressure range; Starting is fast, can work immediately; Insensitive to the dust and the water vapour that contain in the pumped gas; Rotor needn't lubricate, and does not have oil in the pump chamber; Vibrate for a short time, the rotor dynamic balancing condition is better, does not have outlet valve; Driving power is little, and mechanical friction loss is little; Compact structure, floor space is little; The during-operation service expense is low.Therefore, Roots pump is widely used in metallurgy, petrochemical industry, papermaking, food, electronics industry.
Also there is the more high relatively shortcoming of structure relative complex, energy consumption in existing high vacuum multi-stage roots pump.
The model utility content
The purpose of this utility model is, provides a kind of high vacuum multi-stage roots pump, to solve the problems of the technologies described above.
The technical problem that the utility model solves can realize by the following technical solutions:
High vacuum multi-stage roots pump comprises a Roots pump main body, and described Roots pump main body is provided with a suction port, and an air outlet, it is characterized in that, described Roots pump main body comprises Roots's pump chamber, and described Roots's pump chamber bottom is provided with a base,
Described suction port and described air outlet are separately positioned on described Roots's pump chamber both sides.
The suction port of original Roots pump and air outlet all are to be separately positioned on the above and below.When a plurality of monomer Roots pumps are combined into high vacuum multi-stage roots pump, because be subjected to height restriction, can only be with a plurality of monomer Roots pump horizontal positioned.Need to use a large amount of connecting pipelines and turning joint in the monomer Roots pump connection procedure of a plurality of horizontal positioned.Connecting pipeline and turning joint cause complex system, can cause resistance for air flows simultaneously, and influence vacuumizes effect.
The utility model is arranged on both sides with suction port and air outlet, can comparatively directly carry out multistage connection between each Roots pump monomer, saves a large amount of connecting pipelines and turning joint, and then the simplification system, reduces the air ventilation resistance, improves to vacuumize effect.
Described suction port is provided with lock-on connection, and described air outlet is provided with the lock interface supporting with described lock-on connection.
Be combined in the high vacuum multi-stage roots pump process, when connecting a plurality of Roots pump main body, can connect the described lock-on connection of the described suction port of secondary Roots pump main body directly with the described lock interface on the described air outlet of higher level's Roots pump main body.Thereby directly omit connecting pipeline, further simplified structure reduces the air ventilation resistance and provides vacuumizing effect.
Described lock-on connection equates with the height of the bottom of the described base of described lock interface distance.So that directly butt joint installation on smooth bottom surface.
Described Roots pump main body comprises that also one provides the motor of power, and described motor is provided with motor housing, and described motor housing is the seal chamber structure, described motor housing and described Roots's pump chamber UNICOM.
Because motor is sealed up for safekeeping in described motor housing, and described motor housing and described Roots's pump chamber UNICOM that states, so can save the sealing system of using when rotor in machine shaft and the Roots pump main body is connected, and the raising system reliability, and working efficiency is provided.But this can make motor be under the vacuum state and move.So need to use vacuum motor.
Described motor adopts a water-cooled vacuum seal motor, and described water-cooled vacuum seal motor comprises rotor and stator, and described stator is provided with the stator coil that is formed by the lead coiling, and described lead is with plastic bushing outward.By plastic bushing lead is sealed, and then the insulation of realization and outside, stop because the existence of ionization ion or conducting particles causes short circuit to burn the risk of motor.
Described rotor is provided with the rotor coil that the lead coiling forms, and the lead of the described rotor coil of coiling is with plastic bushing outward.
Also can, described rotor adopts p-m rotor.Water-cooled vacuum seal electrical mechanisms becomes permanent magnet motor structure, with the saving energy, and reduces to submit to.
Also comprise a constituent, described constituent comprises that a water circulation system and drives the drive system of water circulation, and described water circulation system comprises a heat dissipating pipe, and described heat dissipating pipe is wound on the described stator.
By the heat on the heat dissipating pipe absorption stator, and then it is overheated to avoid stator to cause because dispelling the heat, damage equipment, even burn.
Described plastic bushing adopts gum sleeve.To guarantee sound construction.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is water-cooled vacuum seal motor stator part-structure schematic representation of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1, high vacuum multi-stage roots pump comprises a Roots pump main body 1, Roots pump main body 1 is provided with a suction port 3, and an air outlet 2, and Roots pump main body 1 comprises Roots's pump chamber 5, Roots's pump chamber 5 bottoms are provided with a base 4, and suction port 3 and air outlet 2 are separately positioned on Roots's pump chamber 5 both sides.
The suction port 3 of original Roots pump and air outlet 2 all are to be separately positioned on the above and below.When a plurality of monomer Roots pumps are combined into high vacuum multi-stage roots pump, because be subjected to height restriction, can only be with a plurality of monomer Roots pump horizontal positioned.Need to use a large amount of connecting pipelines and turning joint in the monomer Roots pump connection procedure of a plurality of horizontal positioned.Connecting pipeline and turning joint cause complex system, can cause resistance for air flows simultaneously, and influence vacuumizes effect.
The utility model is arranged on both sides with suction port 3 and air outlet 2, can comparatively directly carry out multistage connection between each Roots pump monomer, saves a large amount of connecting pipelines and turning joint, and then the simplification system, reduces the air ventilation resistance, improves to vacuumize effect.
Be combined in the high vacuum multi-stage roots pump process, when connecting a plurality of Roots pump main body 1, can connect the lock-on connection of the suction port 3 of secondary Roots pump main body 1 directly with the lock interface on the air outlet 2 of higher level's Roots pump main body 1.Thereby directly omit connecting pipeline, further simplified structure reduces the air ventilation resistance and provides vacuumizing effect.
Lock-on connection equates with the height of lock interface apart from the bottom of base 4.So that directly butt joint installation on smooth bottom surface.
Roots pump main body 1 comprises that also one provides the motor of power, and motor is provided with motor housing, and motor housing is the seal chamber structure, motor housing and Roots's pump chamber UNICOM.Because motor is sealed up for safekeeping in motor housing, and motor housing with state Roots's pump chamber 5 UNICOMs, so the sealing system of use can save rotor in machine shaft and the Roots pump main body 1 and is connected the time, and raising system reliability, and working efficiency is provided.But this can make motor be under the vacuum state and move.So need to use vacuum motor.
With reference to Fig. 2, motor adopts a water-cooled vacuum seal motor, and water-cooled vacuum seal motor comprises rotor and stator, and stator is provided with the stator coil that is formed by lead 61 coilings, the lead 61 outer plastic bushings 62 that are with.By plastic bushing 62 lead 61 is sealed, and then the insulation of realization and outside, stop because the existence of ionization ion or conducting particles causes short circuit to burn the risk of motor.Plastic bushing 62 adopts gum sleeve.To guarantee sound construction.
Rotor is provided with the rotor coil that the lead coiling forms, and the lead of wound rotor coil also is with plastic bushing outward.Also can, rotor adopts p-m rotor.Water-cooled vacuum seal electrical mechanisms becomes permanent magnet motor structure, with the saving energy, and reduces to submit to.Also comprise a constituent, constituent comprises that a water circulation system and drives the drive system of water circulation, and water circulation system comprises a heat dissipating pipe 63, and heat dissipating pipe 63 is wound on the stator.By the heat on the heat dissipating pipe 63 absorption stators, and then it is overheated to avoid stator to cause because dispelling the heat, damage equipment, even burn.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. high vacuum multi-stage roots pump, comprise a Roots pump main body, described Roots pump main body is provided with a suction port, an and air outlet, it is characterized in that, described Roots pump main body comprises Roots's pump chamber, and described Roots's pump chamber bottom is provided with a base, and described suction port and described air outlet are separately positioned on described Roots's pump chamber both sides;
Described Roots pump main body comprises that also one provides the motor of power, and described motor is provided with motor housing, and described motor housing is the seal chamber structure, described motor housing and described Roots's pump chamber UNICOM.
2. high vacuum multi-stage roots pump according to claim 1 is characterized in that described suction port is provided with lock-on connection, and described air outlet is provided with the lock interface supporting with described lock-on connection.
3. high vacuum multi-stage roots pump according to claim 2 is characterized in that, described lock-on connection equates with the height of the bottom of the described base of described lock interface distance.
4. high vacuum multi-stage roots pump according to claim 1, it is characterized in that, described motor adopts a water-cooled vacuum seal motor, described water-cooled vacuum seal motor comprises rotor and stator, described stator is provided with the stator coil that is formed by the lead coiling, and described lead is with plastic bushing outward.
5. high vacuum multi-stage roots pump according to claim 4 is characterized in that described rotor is provided with the rotor coil that the lead coiling forms, and the lead of the described rotor coil of coiling is with plastic bushing outward.
6. high vacuum multi-stage roots pump according to claim 4 is characterized in that, described rotor adopts p-m rotor.
7. high vacuum multi-stage roots pump according to claim 4, it is characterized in that, also comprise a constituent, described constituent comprises that a water circulation system and drives the drive system of water circulation, described water circulation system comprises a heat dissipating pipe, and described heat dissipating pipe is wound on the described stator.
8. high vacuum multi-stage roots pump according to claim 4 is characterized in that, described plastic bushing adopts gum sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578760 CN203067285U (en) | 2012-11-06 | 2012-11-06 | High-vacuum multi-stage roots pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220578760 CN203067285U (en) | 2012-11-06 | 2012-11-06 | High-vacuum multi-stage roots pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067285U true CN203067285U (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220578760 Expired - Fee Related CN203067285U (en) | 2012-11-06 | 2012-11-06 | High-vacuum multi-stage roots pump |
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| CN (1) | CN203067285U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485010A (en) * | 2015-06-18 | 2016-04-13 | 上海伊莱茨真空技术有限公司 | Magnetic sealing structure for drive end of roots pump |
| CN106438365A (en) * | 2015-08-27 | 2017-02-22 | 上海伊莱茨真空技术有限公司 | Modular integrated multi-stage and multi-drive chamber partially non-coaxial dry type vacuum single pump |
| CN110879159A (en) * | 2019-12-27 | 2020-03-13 | 长安大学 | High-temperature high-humidity aerosol sampling device and sampling method |
-
2012
- 2012-11-06 CN CN 201220578760 patent/CN203067285U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485010A (en) * | 2015-06-18 | 2016-04-13 | 上海伊莱茨真空技术有限公司 | Magnetic sealing structure for drive end of roots pump |
| CN106438365A (en) * | 2015-08-27 | 2017-02-22 | 上海伊莱茨真空技术有限公司 | Modular integrated multi-stage and multi-drive chamber partially non-coaxial dry type vacuum single pump |
| CN110879159A (en) * | 2019-12-27 | 2020-03-13 | 长安大学 | High-temperature high-humidity aerosol sampling device and sampling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20191106 |