CN208474109U - A multi-stage Roots dry vacuum pump with independent direct exhaust air for paired rotor shafts - Google Patents
A multi-stage Roots dry vacuum pump with independent direct exhaust air for paired rotor shafts Download PDFInfo
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- CN208474109U CN208474109U CN201820198918.5U CN201820198918U CN208474109U CN 208474109 U CN208474109 U CN 208474109U CN 201820198918 U CN201820198918 U CN 201820198918U CN 208474109 U CN208474109 U CN 208474109U
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- 238000007789 sealing Methods 0.000 claims abstract description 42
- 230000008878 coupling Effects 0.000 claims abstract description 38
- 238000010168 coupling process Methods 0.000 claims abstract description 38
- 238000005859 coupling reaction Methods 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000033228 biological regulation Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 29
- 238000005086 pumping Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 17
- 230000003068 static effect Effects 0.000 abstract description 15
- 238000005461 lubrication Methods 0.000 abstract description 7
- 230000009347 mechanical transmission Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 13
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 11
- 210000004907 gland Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 239000004577 thatch Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The utility model discloses an independent atmospheric multistage roots dry vacuum pump in line of rotor pivot in pairs, it includes: the pump body at least comprises a first-stage Roots system; the Roots system at least comprises a first-stage Roots working unit; the Roots working unit is provided with a pair of Roots rotors, a pair of Roots rotating shafts and an electric drive terminal, and the electric drive terminal is connected to the Roots rotating shafts; the meshing mechanism is connected to the Roots rotating shaft and is linked with the Roots rotor through an electric drive terminal to perform vacuum operation; a magnetic coupling is assembled between the meshing mechanism and the Roots rotating shaft; and the digital comprehensive telex driving system is connected with an electric driving terminal and is used for carrying out unified control on electric energy driving, speed regulation, starting and stopping and interlocking. Each pair of Roots rotors of the utility model are independent, thus eliminating mutual dragging; the mechanical transmission length is reduced by independently electrically driving each pair of Roots rotors; the magnetic gear transmission and the magnetic coupling are adopted for connection, so that the lubrication and the noise are reduced, and the sealing state is improved by static sealing.
Description
[technical field]
The utility model relates to the technical field in terms of vacuum, especially a kind of independent discharging directly into atmosphere of pairs of rotor shaft
Multi-stage roots dry vacuum pump.
[background technique]
The multi-stage roots dry vacuum pump of traditional discharging directly into atmosphere is successively to fill all roots rotors at different levels in order
On same a pair of (two) axis, just as two sugarcoated haws strings placed side by side: by the same motor driven, being nibbled by a pair
It closes gear drive and guarantees that the movement relation of two axis is constant；It is separated to form autonomous working with partition in axial direction between roots rotors at different levels
Chamber, and mechanically join end to end between porting and constitute tandem working relationship；Meanwhile roots rotors at different levels and its
The size of work chamber should need relationship according to a certain percentage according to the compressed coefficient between the pumping speed of vacuum pump, revolving speed, sum of series grade
Composition.Since the gear-box of conventional pump has lubricating oil, to be anti-pollution, gear-box must be sealed with working rotor room with dynamic sealing；
Moreover, motor side is to prevent also sealing into atmosphere.Furthermore the drive shaft seal of conventional pump using based on outside framework oil seal, to axis and
Sealing element and its cooperation are more demanding, are major failure point and replacement difficulty；And conventional pump is to keep consolidating for driving and driven between centers
Determine movement relation, use involute gear engaged transmission, not only needs to lubricate and seal, while also generating noise.It is special as a result,
Devise a kind of multi-stage roots dry vacuum pump of independent discharging directly into atmosphere of pairs of rotor shaft.
[utility model content]
The purpose of this utility model is independent in line the technical problem to be solved is that provide a kind of pairs of rotor shaft
The multi-stage roots dry vacuum pump of atmosphere, each pair of roots rotor of the design be all it is independent, relieve and mutually involve, to design
Advanced optimizing for manufacture provides wide space；Each pair of roots rotor drives that reduce machine driving long by independent electrical simultaneously
Degree, makes manufacture accuracy require to reduce, and effectively realizes noise decline, improves mechanical service life；Furthermore using magnetic-gear
Transmission, magnetic coupling connection reduce lubrication and noise, and replace dynamic sealing to improve sealing state using static seal, hence it is evident that
Improve service performance and equipment life.
To achieve the goals above, the technical solution adopted in the utility model: a kind of pairs of rotor shaft is independent in line
The multi-stage roots dry vacuum pump of atmosphere, it includes:
The pump housing includes at least level-one Roots system；Roots's system includes at least level-one Roots working cell；It is described
Roots working cell is equipped with pairs of roots rotor, pairs of Roots's shaft and electric drive terminal, the electric drive terminal connection
It is connected in Roots's shaft；
Engaging mechanism is connected in Roots's shaft, and passes through the electric drive terminal linkage roots rotor
Carry out vacuum operation；Magnetic coupling is equipped between the engaging mechanism and Roots's shaft；
Digital integrated fax drive system connects the electric drive terminal, carry out electrical energy drive, speed regulation, start and stop and
Interlocking is uniformly controlled.
In one or more embodiments of the utility model, the electric drive terminal includes that electricity turns son, stator；Institute
It states electricity and turns subassembly in Roots's shaft, while being set with sealing shroud between electricity turns son and electricity drives the air gap of stator.
In one or more embodiments of the utility model, sealing shroud is set between the air gap of the magnetic coupling；
In one or more embodiments of the utility model, Roots work intracorporal at the same level or not at the same level is being pumped
On unit, by the chamber of each Roots working cell by pipeline in parallel or series from air inlet to exhaust outlet successively connection.
In one or more embodiments of the utility model, each pairs of roots rotor is independent Roots's work
Make unit, when the gas flow pipe road between the roots rotor normally couples, the Roots working cell is arbitrarily arranged in described
On the pump housing.
In one or more embodiments of the utility model, the engaging mechanism includes transmission gear, the transmission gear
Including main drive gear and from transmission gear.
In one or more embodiments of the utility model, Roots's system includes one or more levels Roots work
Unit, each Roots working cell are an independent working cell, and pairs of roots rotor, pairs of Roots's shaft are independent
Ground is set in the Roots working cell.
In one or more embodiments of the utility model, the roots rotor includes active roots rotor and driven sieve
Thatch rotor；Roots's shaft includes active Roots shaft and driven Roots's shaft.
In one or more embodiments of the utility model, the sealing shroud includes the sealing shroud for not influencing magnetic force.
In one or more embodiments of the utility model, the engaging mechanism includes magnetic drives gear.
The utility model compared with background technique caused by the utility model has the advantages that
The utility model use above-mentioned technical proposal, designed each pair of roots rotor be all it is independent, relieve phase
It mutually involves, provides wide space to the optimization of design and manufacture；Each pair of roots rotor independent electrical drive reduces mechanical biography simultaneously
Dynamic length makes manufacture accuracy require to reduce, and noise can decline, and the service life can improve；With magnetic-gear transmission, magnetic coupling
Connection reduces lubrication and noise.It replaces dynamic sealing to improve sealing state with static seal, improves service performance and equipment longevity
Life.It has the characteristics that structurally reasonable, ingenious in design, economical and practical, high-efficiency environment friendly, long service life, production cost are low.
[Detailed description of the invention]
Fig. 1 is the multi-stage roots dry of the independent discharging directly into atmosphere of pairs of rotor shaft in one embodiment of the utility model
The principle schematic diagram of vacuum pump；
Fig. 2 is the structural schematic diagram in the face A-A in Fig. 1.
[specific embodiment]
The embodiments of the present invention are described below in detail, the embodiment described example is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.
In the description of the present invention, it should be noted that for the noun of locality, if any term " center ", " transverse direction ",
" longitudinal direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top",
The indicating positions such as "bottom", "inner", "outside", " clockwise ", " counterclockwise " and positional relationship are orientation based on the figure or position
Relationship is set, narration the utility model is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning
It must have a particular orientation, constructed and operated with particular orientation, should not be understood as the specific protection model for limiting the utility model
It encloses.
In addition, being used for description purposes only if any term " first ", " second ", it is not understood to indicate or imply relatively heavy
The property wanted or the quantity for implicitly indicating technical characteristic." first " is defined as a result, " second " feature can be expressed or implicit include
One or more this feature, in the utility model description, " at least " is meant that one or more, unless otherwise bright
It is really specific to limit.
In the present invention, except as otherwise clear stipulaties and restriction, if any term " assembling ", " connected ", " connection " term
It should go to understand as broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It is also possible to machine
Tool connection；It can be directly connected, be also possible to be connected by intermediary, can be and be connected inside two elements.For
For those of ordinary skill in the art, can understand as the case may be above-mentioned term in the present invention specifically contain
Justice.
In utility model, unless otherwise specified and limited, fisrt feature second feature "upper" or "lower" can be with
It is directly contacted including the first and second features, also may include that fisrt feature and second feature are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " under " and " above " include fisrt feature
It right above second feature and oblique upper, or is only to indicate that first feature horizontal height is higher than the height of second feature.First
Feature second feature " on ", " under " and " below " include that fisrt feature is directly under or diagonally below the second feature, or only
Only indicate that first feature horizontal height is lower than second feature.
Made below with reference to the attached drawing of specification by being further described to specific embodiment of the present utility model
The technical solution of the utility model and its benefits are clearer.Describing embodiment below with reference to attached drawing is to show
Example property, it is intended to explain the utility model, and should not be understood as limiting the present invention.
The utility model provides the multi-stage roots dry vacuum pump of the preferably independent discharging directly into atmosphere of pairs of rotor shaft, it
It include: the pump housing 1 including at least level-one Roots system (not indicated in figure), each Roots's system works including at least level-one Roots
Unit 2, each Roots working cell 2 be equipped with pairs of roots rotor 2,3, pairs of Roots's shaft 24 and electric drive terminal,
The electric drive terminal includes that electricity turns son 13 and electricity drive stator 10.Electric drive terminal is connected in Roots's shaft 24.This is practical new
Type is all made of every level-one Roots system a Roots working cell 2 or several Roots working cells 2, each Roots's work
Unit 2 all includes independent a pair of of shaft, these shafts are moved by certain relationship；And the porting of Roots's systems at different levels
It is sequentially connected in series by end to end, specifically its is end to end or directly communicates or is connected by being close to adapter tube road, can be by different levels
Roots's system is flexibly arranged in pairs or groups by respective suitably sized, revolving speed, the number of each Roots working cell 2 and position, thus by each
Compression ratio between grade Roots's system is realized with simple with volumetric ratio, is changed to volumetric ratio or rotating ratio or rotating ratio and appearance
The technical effect that product is realized than combining.
In this manner it is possible to be improved by the revolving speed of big pumping speed chamber to exchange the reduction of volume for, small pumping speed chamber can use reduction
The mode of revolving speed exchanges the increase of volume for, to make the volume of each Roots working cell chamber uniformly or close to uniform；Make to pump
Geometric dimension reduces because of the reduction of big pumping speed chamber in the case where same pumping speed, so that realizing reduces manufacturing cost, reduces fortune
Row energy consumption, the purpose for improving outlet side situation；Make pump in the case where same pumping speed, geometric dimension is due to the increase of small pumping speed chamber
Improve the exhaust end heat dissipation of pump；The size of big pumping speed chamber reduce and small pumping speed chamber become large-sized make the specifications and models range of pump to
Bigizationner and the development of two end of smallizationer may become.To reduce the length of every Roots's shaft, Roots's shaft is improved
Support situation；Bearing support and sealing, and these bearings and sealing can be had by making each Roots's shaft end of every grade of pump
It is all easy to maintain.The progress of modern processing strictly provides convenient and fast item than the machine driving of relationship to realize between at different levels
Part designs above Roots's shaft independent separates at different levels and provides possibility.
Engaging mechanism (not indicating in figure) is connected in Roots's shaft 24, and by electric drive terminal link roots rotor into
Row vacuum operation；It is equipped with one group of magnetic coupling between engaging mechanism and Roots's shaft 24, and the gas of each magnetic coupling
Sealing shroud is set between gap.Wherein, engaging mechanism includes magnetic drives gear.This patent replaces tradition using magnetic drive technology
Driving and driven rotor of the involute gear to realize pump chamber at the same level between coupled drive, to eliminate rushing for mechanical gear transmission
It hits and noise, cancellation lubrication.Couple the power transmission between driving part and workpiece using magnetic coupling simultaneously, thus
So that the rigid or semi-rigid connection of machenical coupling is become the flexible connected of electromagnetism, reduces transmission accuracy requirement, transmission punching
Hit reduction, noise pollution is improved；Further, this patent is between the air gap of magnetic coupling using the appearance for not influencing magnetic force
Device, the container for not influencing magnetic force of the utility model include the sealing shroud not influence magnetic force.Pass through the air gap of magnetic coupling
Between workpiece and free surrounding space are separated and realize and dynamic sealing become into static seal using not influencing the container of magnetic force, make to seal
Performance and service life are all improved.This patent will be changed into comprehensive fax with the driving end of above-mentioned magnetic coupling in turn and be driven eventually
The actuator (i.e. motor stator) at end, and driven end is changed to corresponding rotor, and motor is allowed directly to replace magnetic coupling,
Make that structure is further succinct, size further decreases, cost further declines, reliability further increases.
The digital integrated fax drive system 8 of this patent setting connects each electric drive terminal and carries out electrical energy drive, adjusts
Speed, start and stop and interlocking are uniformly controlled.Using digital integrated fax actuation techniques, with driver driving pump at different levels, respectively
Roots working cell is by strict requirements starting, operation, shutdown.At different levels while starting and negative by what is respectively allowed when starting
It carries, operating condition ramps up until operating normally；Speed required by pumping speed as defined in stringent compression context is respectively pressed when operation
It runs and is automatically adjusted according to the variation of load；When stopping by it is minimum to electric network pollution, to the machine tool for pumping itself and being attached most
Safety, most energy saving, most environmentally friendly mode are shut down.
The electric drive terminal of this patent includes that electricity turns son, electricity drives stator；Electricity turns subassembly in Roots's shaft 24,
It is turned simultaneously in electricity and is set with sealing shroud between son and the air gap of electricity drive stator.This technology feature is, by traditional motor and rotor
The machenical coupling of between centers connection is cancelled, and the rotor of the electric drive terminal of each independent Roots working cell 2 is allowed to be directly attached to phase
In the Roots's shaft 24 answered, and stator is attached on relevant part.Meanwhile one is filled between rotor and the air gap of stator do not influence
The sealing shroud of magnetic drives separates roots rotor and its working cell with the external world, and dynamic sealing is changed to static seal to realize
And do not influence magnetic drive.
Preferably, on pumping Roots working cell 2 intracorporal at the same level or not at the same level, by the chamber of each Roots working cell
By pipeline in parallel or series from air inlet to exhaust outlet successively connection.Each pairs of roots rotor is an independent Roots
Working cell 2, when the gas flow pipe road between each roots rotor normally couples, each Roots working cell 2 can be arbitrarily arranged at
On the pump housing.One Roots's system includes one or more levels Roots working cell 2, and every level-one Roots working cell 2 is one independent
Working cell, pairs of roots rotor, pairs of Roots's shaft 24 are provided independently from in Roots working cell 2.The present invention
It is made of multi-stage roots system, every grade of Roots's system includes a Roots working cell 2 or multiple Roots working cells 2.Often
It is all a pair of the independent vacuum work chamber in independent Roots working cell 2: one and dress in the inner to roots rotor
The attachmentes such as independent roots rotor and its axis；As long as i.e. gas flow pipe road is coupled by rule, these independent Roots's works
Making unit 2 can arbitrarily arrange on the pump housing.
Engaging mechanism in this patent includes transmission gear, which includes main drive gear and from transmission gear.
Roots rotor includes active roots rotor and driven roots rotor；Roots's shaft 24 includes that active Roots shaft and driven Roots turn
Axis.Each independent Roots working cell 2 is coupled with a pair of of gear, and this is magnetic drives gear to gear.Meanwhile it will
Magnetic drives gear and principal and subordinate fill one group of magnetic coupling between moving Roots's shaft to transmit torque, and in the gas of magnetic coupling
Being set with one between gap does not influence the traditional sealing shroud of magnetic force, roots rotor and its working cell is separated with the external world, to realize
Dynamic sealing is changed to static seal.Advanced optimize in structure, in this patent each independent Roots working cell have one solely
Vertical electric drive terminal, and these electrically independent drives terminals all carry out coordination control by the same digital integrated fax drive system
System.
Embodiment:
Referring to shown in attached drawing 1-2, the multi-stage roots dry of the independent discharging directly into atmosphere of pairs of rotor shaft of the present embodiment is true
Sky pump, it includes: the pump housing 1, Roots's system (not indicating in figure), Roots working cell 2, active roots rotor 3, driven Roots turn
Son 4, main drive gear 5 drive stator from transmission gear 6, airflow channel 7, comprehensive fax drive control room 8, electricity drive end cap 9, electricity
10, end air gap static seal gland 11, bearing 12, electricity is driven to turn sub 13, sealing ring 14, electric drive endplate 16, pump housing sealing ring
17, right clapboard 18, magnetic coupling inner disc 19, magnetic coupling air gap static seal gland 20, magnetic coupling external disk 21, driving cog
Wheel bearing 22, gear cover 23.Roots rotor includes active roots rotor 3 and driven roots rotor 4, is set as the biography of engaging mechanism
Moving gear includes main drive gear 5, from transmission gear 6, transmission gear bearing 22 and gear cover 23.Electric drive terminal includes that electricity drives
End cap 9, electricity drive stator 10, driving end air gap static seal gland 11 and electricity and turn son 13.Magnetic coupling includes in magnetic coupling
Disk 19, magnetic coupling air gap static seal gland 20 and magnetic coupling external disk 21.The invention patent is made of three zones component:
Pump parts, each Roots working cell 2, principal and subordinate's transmission gear 5,6, comprehensive fax driving control system 8.Pump parts are by one
The pump housing 1 (containing several for the Roots working cell 2 of vacuum chamber, airflow channel 7, porting etc.), several pairs of roots rotors 3,
4,12, right clapboards 18 of an electric drive endplate 16 and bearing and bearing 12, several pump housing sealing rings 17 etc. form.Each sieve
Principal and subordinate's nutating gear 5,6 that thatch working cell 2, roots rotor engage, by several pairs of magnetic drives gears 5,6, several pairs of magnetic
The composition such as 14, magnetic coupling of the gap with static seal gland 20, several sealing rings gear covers 23.Comprehensive fax drive control system
System 8, by digital FBW drive control room one, human-computer dialogue window one, to be driven by electricity terminal several (containing energized stator, magnetic
Gap sealing shroud, electricity turn son and sealing ring) and control cabinet etc. form.Entirety of the whole system at an intelligence, full-static sealing dissipate
Hot good, noise is small.
The a little higher than atmospheric pressure of the pressure at expulsion of the present embodiment, the operating pressure and limiting pressure of inlet end are wanted by using
Depending on asking；Its pumping speed is also to be determined according to series world map requirement.
This patent is made of multi-stage roots working cell 2: every grade of Roots working cell 2 is either individually, be also possible to
It is multiple to be formed by connecting；Independent a pair of of Roots's shaft 24 is arranged in each Roots working cell 2, these Roots's shafts are by certain
Relationship movement；Roots working cells 2 at different levels are according to certain rules in gas compression direction successively from air inlet to exhaust outlet with pipe
Road series connection.
How much the series of Roots's system is according to compression ratio is not between limiting pressure (vacuum degree) to be achieved and grade needed for pumping
It is same and different.And every grade of Roots working cell 2 number be then as needed (such as: the size of pump, structure size, hope and can
Attainable suitable rotational speed and manufacturing cost etc.) depending on, but basic principle is: every grade of 2 every turn of each Roots working cell can be sealed
Hold one's breath body geometric volume and the revolving speed sum of products again with the ratio between the numerical value of adjacent level will with they respectively between compression ratio one
Extremely, it may be assumed that
Compression ratio of the A between a grades and b grades, a and b are the serial number (such as b=a+1) of adjacent level, and N is roots rotor revolving speed, V
For the geometric volume of every turn of energy confining gas in 2 chamber of Roots working cell, i, m, n are positive integer.
All Roots working cells 2 are whether at the same level or not at the same level all in the same pump housing, and chamber is logical
Cross in parallel or series pipeline by rule the successively connection from air inlet to exhaust outlet；But they are all one on mechanical and geometric position
A independent mini system: there are the independent electric drive terminal directly controlled by comprehensive fax drive system 8, a pair of independent fortune
Capable roots rotor, an independent engaging mechanism and one except into, remaining is all independent in addition to discharge pipe is relevant with other rooms
Working chamber；All these Roots working cells 2 can facilitate any arrangement with design and manufacture according to the needs of use.
Above mentioned air inlet and exhaust outlet is the beginning and end of entire vacuum pump system pipeline, and whole system only exists
Inlet end has an air inlet, also only has an exhaust outlet in exhaust end.
Above mentioned pipeline is to link up air inlet, each Roots working cell 2, exhaust outlet, and to vacuumize, everything goes well with your work
The channel of progress；The channel can directly process in the pump housing, other outside the pump housing can also connect；Not according to the arrangement of operating room
With the channel it is possible that parallel branch, it may be possible to straight, may also be bent.
Above mentioned roots rotor is the function executive component of lobe pump.
The working portion of each roots rotor compressed gas is special-shaped cylinder, and the radial profiled outline shape of the cylinder is more
Section Roots's curve adds circular arc or multi-section circular arc curve or multistage cycloid or has concave-convex with what the Mixing Curve of upper curve formed
The closed curve of shape has three Roots also to have two leaf Roots etc., here with no restrictions to curve and head number, but requires rotating
Can guarantee when work has good fit high-efficient, energy conservation and environmental protection with sealing, compressed gas with the inner wall of pump chamber and spouse's rotor
?.
The axial ends of roots rotor respectively has one to be used in the bearing support and the axis for being driven, and two axis is in
Between special-shaped cylinder bus it is parallel, and central axis is overlapped with the geometric center lines of special-shaped cylinder, two axis and centre abnormal shape cylinder
Between respectively connected by a shoulder it is excessive；The excessive shoulder and central axis upright, and two shoulders are parallel to each other.
Two pieces shape, size all the same roots rotor when work, axis is parallel, radial to be mounted in by certain phase relation
In the same Roots working cell 2, pairwise coupling is used；One of them be directly by the driving link being driven by electricity, the other is
Driven member, coupling (phase) relationship between them are attached separately in the shaft of their the same ends by a pair, directly engagement and mould
Several and all equal number of teeth precision gear is realized, therefore two roots rotors is oppositely oriented, and revolving speed is identical.
Above mentioned engaging mechanism namely this to guarantee two roots rotor coupled relations modulus and the number of teeth it is all identical
The precision gear directly engaged, the precision gear of the present embodiment replaces traditional involute machinery tooth using magnetic-gear
Wheel, to reduce lubrication and noise.
This above mentioned is to two magnetic couplings of connection between magnetic-gear and corresponding a pair of of Roots's shaft
It realizes, and with not influencing the container of magnetic force for Roots shaft and its attachment and extraneous between the air gap of two magnetic coupling
It separates, so that dynamic sealing be made to become static seal.
The inner wall of above mentioned 2 pump chamber of Roots working cell be Roots's impeller long axis direction outer rim by two diameters
Tactical diameter, center away from mutually being passed through for Roots's impeller longest and the cylindrical hole of the half of the sum of minimum dimension, the hole
Length is that Roots's impeller is calmed the anger the sum of segment length and the total fit clearance in mechanism both ends in the Roots vacuum room.
The above mentioned pump housing is the Roots vacuum room pump chamber that its above-mentioned all roots rotor is rely interdependent, including by rule
Connect the body element of the pump of the pipeline of these Roots working cells 2, air inlet and exhaust outlet.On the pump housing there are also radiator,
Installing and connecting apparatus etc..Pump housing both ends are respectively provided with electric drive endplate and right clapboard and its sealing ring etc., the partition etc. and pump
Body constitutes closed Roots working cell 2；And the spring bearing of two roots rotors is just mounted on two partition, roots rotor
The shoulder at active section both ends and two partition inner walls, which are constituted, to be cooperated, to separate vacuum chamber air inlet side at different levels, by conveying gas confinement
And exhaust side, realize compression exhaust.
Above mentioned digital integrated fax driving control system 8, refers to the roots rotor of each Roots working cell 2
There is one to be driven by electricity terminal to directly drive, which all directly distributes electric energy by comprehensive fax drive control room and drive
Dynamic, speed regulation, start and stop, and the driving, speed regulation, start and stop, interlocking etc. are carried out according to stringent logical relation.It is straight that electricity turns son 13
It connects and is connected in active Roots's shaft, electricity drives stator 10 and electricity turns between sub 13 air gaps equally by not influencing the container of magnetic force for sieve
Thatch shaft and its attachment are separated with the external world, so that dynamic sealing be made to become static seal.In this way, the working portion pumped entirely removes porting
Outside, remaining is all sealed by static seal.The synthesis fax driving control system 8 pump one end and be connected with the pump housing.
The prior art of the utility model patent background has the following deficiencies: first, and all rotor strings are in same a pair of of transmission
On axis, therefore its revolving speed must be consistent, thus generates and checks and balance.It is at different levels cannot be needed for the different selections respectively according to oneself
Revolving speed, and the change of volumes at different levels can only be leaned on therefore to constrain the pumping speed range of pump to realize at different levels compression ratios: big
That level-one of volume is difficult to again greatly, limit the design and manufacture of large discharge pump；It wants that level-one of small volume to be difficult to again small, and limits
The design and manufacture of small displacement pump.Second, because at different levels coaxial, axis is longer: as bearing support is all arranged at interstage diaphragm,
Interfere there have been Planar Mechanisms, and the bearing maintenance is difficult；As being all not provided with bearing support at interstage diaphragm, axis can due to long
Vibration can occur even to resonate, and be unfavorable for the operation of pump, influence the service life of pump.Third, the drive shaft seal pumped now use
It is more demanding to axis and sealing element and its cooperation based on outside framework oil seal, it is major failure point and replacement difficulty.4th, it pumps now
For the fixation movement relation for keeping driving and driven between centers, involute gear engaged transmission is used；Therefore it just needs to lubricate and close
Envelope, while also generating noise.5th, involute precision gear is driven precision prescribed height, and difficult to load and unload, drive noise is big.6th,
Because of coaxial and same revolving speed, compression ratio can only be realized by volumetric ratio between the grade of pump, thus Pyatyi or six grades, or more grade
Such series last discharge grade geometric dimension is pumped by very little more, radiate highly difficult.
The prior art is by all rotor strings on same a pair of of transmission shaft, therefore its revolving speed must be consistent, thus generates
It checks and balance；It is at different levels to select respectively required revolving speed according to the different of oneself, and it is real that the change of volumes at different levels can only be leaned on
Existing at different levels compression ratios, therefore constrain the optimization of this kind pump.It is involute gear that principal and subordinate, which moves coupler gear, simultaneously, and use is glossy
It is sliding, it is sealed with dynamic sealing；Pump is to use machenical coupling with coupling for motor, the axis coupled with motor also to be that rubber moves close
Envelope.Therefore noise is big, has leakage.
And the improved present invention is made of multi-stage roots system, every grade of Roots's system include a Roots working cell or
Several Roots working cells；Each Roots working cell is equipped with independent pairs of shaft, and these shafts are pressed and centainly (set
Relationship movement calmly)；Wherein, the porting of Roots's systems at different levels is sequentially connected in series as end to end, and this it is end to end or
It is directly to communicate or be connected by being close to adapter tube road；And the porting between multiple Roots working cells is connected in parallel, this is simultaneously
Only air inlet connects connection with air inlet, exhaust outlet and exhaust outlet connect, and realizes roots rotor working cell in gas stream
Being set side by side on threading a pipe.Can thus allow Roots's systems at different levels and each Roots working cell by respectively it is suitably sized,
Revolving speed, each Roots working cell number and position flexibly are arranged in pairs or groups, and realize being associated for geometric dimension and revolving speed, and geometry position
Setting arbitrarily to be arranged.The design replaces traditional involute gear to realize pump chamber at the same level using magnetic driving mechanism technology
Coupled drive between driving and driven rotor, to eliminate impact and the noise, cancellation lubrication of mechanical gear transmission；Meanwhile passing through magnetic force
Shaft coupling couples the power transmission between driving part and workpiece, to make the rigid or semi-rigid connection of machenical coupling
Become the flexible connected of electromagnetism.
Driving end with above-mentioned magnetic coupling is changed into the drive of digital integrated fax drives terminal by this patent in turn
Moving part (i.e. motor stator): there is an independent drives terminal in each independent Roots working cell, and these independently drive
Terminal is all by the same digital integrated fax drive system coordinated control；And driven end is changed to corresponding turn
Son allows motor directly to replace magnetic coupling, makes that structure is further succinct, size further decreases, cost further declines, can
It is further increased by property.The utility model drives each Roots working cells of pump at different levels by stringent with a comprehensive fax driver
It is required that starting, operation, shutdown.I.e. start when, each Roots working cell simultaneously start and by respectively allow load, operating condition gradually
Accelerate until operating normally；When operation, each Roots working cell is by speed required by pumping speed as defined in stringent compression context
It runs and is automatically adjusted according to the variation of load；When stopping, by it is minimum to electric network pollution, to the machine tool for pumping itself and being attached
Most safe, most energy saving, most environmentally friendly mode is shut down.Each pair of roots rotor of the present invention be all it is independent, relieve and mutually involve, give
The optimization of design and manufacture provides wide space；Each pair of roots rotor independent electrical drive reduces machine driving length simultaneously, makes
Manufacture accuracy requires to reduce, so that lower noise-reducing, improves service life；With magnetic-gear transmission, magnetic coupling connection
Reduce lubrication and noise；It replaces dynamic sealing to improve sealing state using static seal, improves service performance and equipment life.
It has the characteristics that structurally reasonable, ingenious in design, economical and practical, high-efficiency environment friendly, long service life, production cost are low.Therefore, it
It is the product of a kind of practicability, economy and technical equal top grade.
In the description of specification, reference term " close one embodiment ", " preferably ", " example ", " specific example " or
The description of " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example, includes
It is different for the schematic representation of above-mentioned term in the present specification at least one embodiment or example of the utility model
Surely identical embodiment or example is referred to.Moreover, particular features, structures, materials, or characteristics described can be any
It is combined in a suitable manner in one or more embodiments or example.
From the foregoing description of structures and principles it should be understood by those skilled in the art that, the utility model
It is not limited to above-mentioned specific embodiment, it is equal using the improvement of techniques well known and substitution on the basis of the utility model
The protection scope of the utility model is fallen in, should be limited by each claim.
Claims (10)
1. a kind of multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft, which is characterized in that it includes:
The pump housing includes at least level-one Roots system；Roots's system includes at least level-one Roots working cell；The Roots
Working cell is equipped with pairs of roots rotor, pairs of Roots's shaft and electric drive terminal, and the electric drive terminal is connected in
In Roots's shaft；
Engaging mechanism is connected in Roots's shaft, and is carried out by the electric drive terminal linkage roots rotor
Vacuum operation；Magnetic coupling is equipped between the engaging mechanism and Roots's shaft；
Digital integrated fax drive system connects the electric drive terminal, carries out electrical energy drive, speed regulation, start and stop and interlocking
Be uniformly controlled.
2. the multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 1, special
Sign is: the electric drive terminal includes that electricity turns son, electricity drives stator；The electricity turns subassembly in Roots's shaft
On, while being turned in electricity and being set with sealing shroud between son and the air gap of electricity drive stator.
3. the multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 1, special
Sign is: being set with sealing shroud between the air gap of the magnetic coupling.
4. the multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 1, special
Sign is: on pumping the Roots working cell intracorporal at the same level or not at the same level, the chamber of each Roots working cell being passed through
Pipeline is from air inlet to exhaust outlet successively connection in parallel or series.
5. the multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 1, special
Sign is: each pairs of roots rotor is an independent Roots working cell, the gas flow pipe between the roots rotor
When road normally couples, the Roots working cell is arbitrarily arranged on the pump housing.
6. the multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 1, special
Sign is: the engaging mechanism includes transmission gear, which includes main drive gear and from transmission gear.
7. the multi-stage roots dry vacuum of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 1-6
Pump, it is characterised in that: Roots's system includes one or more levels Roots working cell, and each Roots working cell is one
Independent working cell, pairs of roots rotor, pairs of Roots's shaft are provided independently from in the Roots working cell.
8. the multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 7, special
Sign is: the roots rotor includes active roots rotor and driven roots rotor；Roots's shaft includes that active Roots turns
Axis and driven Roots's shaft.
9. the multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 2 or 3,
Be characterized in that: the sealing shroud includes the sealing shroud for not influencing magnetic force.
10. the multi-stage roots dry vacuum pump of the independent discharging directly into atmosphere of pairs of rotor shaft according to claim 1 or 6,
It is characterized by: the engaging mechanism includes magnetic drives gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820198918.5U CN208474109U (en) | 2018-02-02 | 2018-02-02 | A multi-stage Roots dry vacuum pump with independent direct exhaust air for paired rotor shafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820198918.5U CN208474109U (en) | 2018-02-02 | 2018-02-02 | A multi-stage Roots dry vacuum pump with independent direct exhaust air for paired rotor shafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474109U true CN208474109U (en) | 2019-02-05 |
Family
ID=65206482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820198918.5U Withdrawn - After Issue CN208474109U (en) | 2018-02-02 | 2018-02-02 | A multi-stage Roots dry vacuum pump with independent direct exhaust air for paired rotor shafts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208474109U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194353A (en) * | 2018-02-02 | 2018-06-22 | 中山市天元真空设备技术有限公司 | A kind of multi-stage roots dry vacuum pump of the discharging directly into atmosphere of pairs of rotor shaft independence |
-
2018
- 2018-02-02 CN CN201820198918.5U patent/CN208474109U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194353A (en) * | 2018-02-02 | 2018-06-22 | 中山市天元真空设备技术有限公司 | A kind of multi-stage roots dry vacuum pump of the discharging directly into atmosphere of pairs of rotor shaft independence |
| US11415133B2 (en) | 2018-02-02 | 2022-08-16 | Zhongshan Tianyuan Vacuum Equipment Technology Co., Ltd | Multi-stage dry roots vacuum pump |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190205 Effective date of abandoning: 20191213 |