CN109488590A - A kind of rotors for dry double-screw vacuum pump - Google Patents
A kind of rotors for dry double-screw vacuum pump Download PDFInfo
- Publication number
- CN109488590A CN109488590A CN201811513543.8A CN201811513543A CN109488590A CN 109488590 A CN109488590 A CN 109488590A CN 201811513543 A CN201811513543 A CN 201811513543A CN 109488590 A CN109488590 A CN 109488590A
- Authority
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- China
- Prior art keywords
- vacuum pump
- screw rod
- rotation
- pump case
- rotors
- Prior art date
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- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/082—Details specially related to intermeshing engagement type pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
- F04C29/005—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a kind of rotors for dry double-screw vacuum pump, including power motor, the side of the power motor is equipped with vacuum pump case, the bottom surface of the vacuum pump case has been bolted firm banking, the inner cavity of the power motor is equipped with machine shaft, one end of the machine shaft is fixedly connected with rotating joint, the rotating joint is fixedly connected with the first rotation screw rod far from the side of machine shaft, the first rotation screw rod is fixedly connected with the first rotate gear far from the side of rotating joint, and the flank of tooth of first rotate gear is connected with transmission gear.In the present invention, it is arranged using twin-screw, the transmission gear and rotating joint of the centre of first rotation screw rod and the second rotation screw rod are arranged at the inside of vacuum pump case, guarantee that internal work environment will not be contaminated damage, the fixed studdle rotation of rolling bearing, guarantee that rotation is without friction, smooth running between the first rotation screw rod and the second rotation screw rod.
Description
Technical field
The present invention relates to screw vacuum pump field more particularly to a kind of rotors for dry double-screw vacuum pump.
Background technique
Screw vacuum pump is the very high sci-tech product of technology content, is mainly used in the vacuum technology process of high-purity,
Vacuum degree is high, is suitable for bad working environments, has and extracts solidifying property, the ability of the gas containing particulate matter, particularly suitable for clean environment,
And the preservative treatment that is easy to do, especially suitable for electronics, chemical industry, biological medicine, intermetallic composite coating, the fields such as food processing, screw vacuum
Pump is to make synchronous high-speed reverse rotation in pump case and the air-breathing of generation and the air-extractor of scavenging action using a pair of of screw rod,
Two screw rods are corrected through fine dynamic balance, by bearing support, are mounted in pump case, there is certain gap between screw rod and screw rod,
Therefore when pump work, between each other without friction, smooth running, low noise, working chamber is without lubricating oil, and therefore, screw pump can be taken out
Except the gas occasion containing a large amount of water vapours and a small amount of dust, ultimate vacuum is higher, and consumption power is lower, has energy conservation, exempts to tie up
The advantages that repairing.
Rotation reduces frictional force using lubricating oil between existing screw vacuum pump screw rod, and transmission device is arranged in vacuum pump
The inner cavity of shell, closure is poor, and internal work environment is damaged vulnerable to pollution, and maintenance cost is high, between screw rod when pivoting friction
Between it is long easily-deformable, lead to galloping, noise is big, influences screw vacuum pump working efficiency.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of oil free screw vacuum proposed
Pump.
To achieve the goals above, present invention employs following technical solutions: a kind of rotors for dry double-screw vacuum pump, including power
The side of motor, the power motor is equipped with vacuum pump case, and the bottom surface of the vacuum pump case has been bolted firm banking,
The inner cavity of the power motor is equipped with machine shaft, and one end of the machine shaft is fixedly connected with rotating joint, and described turn
Dynamic shaft coupling is fixedly connected with the first rotation screw rod far from the side of machine shaft, and the first rotation screw rod is far from rotation shaft coupling
The side of device is fixedly connected with the first rotate gear, and the flank of tooth of first rotate gear is connected with transmission gear, the transmission
The flank of tooth of gear is connected with the second rotate gear, and the side of second rotate gear is fixedly connected with the second rotation screw rod, institute
The shaft surface for stating the first rotation screw rod and the second rotation screw rod is serially connected with screw-bearing, and the vacuum pump case is close to power
The top surface of motor offers gas outlet, and the top surface and bottom surface of the vacuum pump case offer air inlet, outside the vacuum pump
The bottom of shell is equipped with pedestal screw rod, and the bottom of the pedestal screw rod is equipped with pedestal nut.
It is as above-mentioned technical proposal to further describe:
The first rotation screw rod and the second rotation screw rod are arranged in same level, and the first rotation screw rod is close to first
The axial plane of rotate gear is serially connected with screw-bearing, and the both ends axial plane of the second rotation screw rod is serially connected with screw-bearing.
It is as above-mentioned technical proposal to further describe:
The inside flank of first rotate gear and the second rotate gear is connected with transmission gear, and the first rotate gear and
The center of two rotate gears and the central horizontal angle of transmission gear are 60 degree.
It is as above-mentioned technical proposal to further describe:
The same side of vacuum pump case is arranged in the power motor and rotating joint, and rotating joint is arranged in vacuum pump
The inner cavity of vacuum pump case is arranged in the inside of shell, the first rotation screw rod and the second rotation screw rod.
It is as above-mentioned technical proposal to further describe:
The quantity of the air inlet is two, and the quantity of gas outlet is one, and air inlet is symmetricly set on vacuum pump case
Top surface and bottom surface.
It is as above-mentioned technical proposal to further describe:
The machine shaft, rotating joint and the first rotation screw rod three are centrally disposed on same level straight line.
It is as above-mentioned technical proposal to further describe:
The quantity of the pedestal screw rod and pedestal nut is four groups, and four groups of pedestal screw rods are uniformly arranged on the bottom of vacuum pump case
The top surface of corresponding position firm banking is arranged in face, four groups of pedestal nuts.
In the present invention, be arranged using twin-screw, first rotation screw rod and second rotation screw rod centre transmission gear and
Rotating joint is arranged at the inside of vacuum pump case, completely cuts off with screw rod working environment, guarantees that internal work environment will not be by
It is damaged to pollution, the fixed studdle rotation of rolling bearing, guarantees to rotate nothing between the first rotation screw rod and the second rotation screw rod
Friction, smooth running, low noise, working chamber are not necessarily to lubricating oil, reduce rotary electric machine load, present invention consumption power is lower, tool
There is the characteristics of energy conservation, freedom from repairs, is worthy to be popularized.
Detailed description of the invention
Fig. 1 is a kind of sectional view of rotors for dry double-screw vacuum pump proposed by the present invention；
Fig. 2 is a kind of top view of the rotation screw rod of rotors for dry double-screw vacuum pump proposed by the present invention；
Fig. 3 is the partial enlarged view of 1-A；
Fig. 4 is a kind of side view of the rotation screw rod of rotors for dry double-screw vacuum pump proposed by the present invention.
Marginal data:
1, power motor；2, vacuum pump case；3, firm banking；4, machine shaft；5, rotating joint；6, the first rotation spiral shell
Bar；7, the second rotation screw rod；8, screw-bearing；9, the first rotate gear；10, the second rotate gear；11, transmission gear；12, into
Port；13, gas outlet；14, pedestal screw rod；15, pedestal nut.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention；Term " first ", " second ", " third "
It is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance；In addition, unless otherwise specific regulation and limit
Fixed, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachably connect
It connects, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can be with concrete condition
Understand the concrete meaning of above-mentioned term in the present invention.
Referring to Fig.1-4, the side of a kind of rotors for dry double-screw vacuum pump, including power motor 1, power motor 1 is equipped with vacuum pump
Shell 2, the bottom surface of vacuum pump case 2 have been bolted firm banking 3, and the inner cavity of power motor 1 is equipped with machine shaft 4, motor
One end of shaft 4 is fixedly connected with rotating joint 5, and rotating joint 5 is fixedly connected with first far from the side of machine shaft 4
Screw rod 6 is rotated, the first rotation screw rod 6 is fixedly connected with the first rotate gear 9, the first rotation far from the side of rotating joint 5
The flank of tooth of gear 9 is connected with transmission gear 11, and the flank of tooth of transmission gear 11 is connected with the second rotate gear 10, the second rotate gear
10 side is fixedly connected with the second rotation screw rod 7, and the shaft surface that the first rotation screw rod 6 and second rotate screw rod 7 concatenates
Have a screw-bearing 8, vacuum pump case 2 offers gas outlet 13 close to the top surface of power motor 1, the top surface of vacuum pump case 2 with
Bottom surface offers air inlet 12, and the bottom of vacuum pump case 2 is equipped with pedestal screw rod 14, and the bottom of pedestal screw rod 14 is equipped with pedestal
Nut 15.
First rotation screw rod 6 and the second rotation screw rod 7 are arranged in same level, and the first rotation screw rod 6 is close to first
The axial plane of rotate gear 9 is serially connected with screw-bearing 8, and the both ends axial plane of the second rotation screw rod 7 is serially connected with screw-bearing 8, guarantees
Rotation has gap, slow-roll stabilization, the first rotate gear between first rotation screw rod 6 of the support of screw-bearing 8 and the second rotation screw rod 7
9 and second the inside flank of rotate gear 10 be connected with transmission gear 11, and the first rotate gear 9 and the second rotate gear 10
The central horizontal angle of center and transmission gear 11 is 60 degree, and the first rotation screw rod 6 and the second rotation screw rod 7 is made to keep same
When rotate backward, the same side of vacuum pump case 2 is arranged in power motor 1 and rotating joint 5, and rotating joint 5 is arranged
In the inside of vacuum pump case 2, the first rotation screw rod 6 and second rotates the inner cavity that vacuum pump case 2 is arranged in screw rod 7, will turn
Dynamic shaft coupling 5 and the working environment of the inner cavity of vacuum pump case 2 completely cut off, and the quantity of air inlet 12 is two, the number of gas outlet 13
Amount is one, and air inlet 12 is symmetricly set on the top surface and bottom surface of vacuum pump case 2, guarantees 2 air inlet 12 of vacuum pump case
Gas amount of flow it is big, control gas flow flowing velocity, machine shaft 4, rotating joint 5 and first rotation 6 three of screw rod
Be centrally disposed on same level straight line, stablize power motor 1 and power inputed into the first rotation screw rod 6, pedestal
The quantity of screw rod 14 and pedestal nut 15 is four groups, and four groups of pedestal screw rods 14 are uniformly arranged on the bottom surface of vacuum pump case 2, four
The top surface of corresponding position firm banking 3 is arranged in group pedestal nut 15, guarantees that power motor 1 and vacuum pump case 2 can be stablized
It is fixedly secured in the top surface of firm banking 3.
Working principle: when this kind of rotors for dry double-screw vacuum pump, power motor 1 is defeated by rotating joint 5 by power
Out to the first rotation screw rod 6, power is inputed to transmission gear 11 by the first rotation screw rod 6, and transmission gear 11 inputs to power
Second rotation screw rod 7, guarantee first rotation screw rod 6 and second rotation screw rod 7 rotate backward at the same speed, gas from air inlet 12 into
Enter, gas outlet 13 is transmitted to by the spiral interdental space on the first rotation screw rod 6 and the second rotation screw rod 7, to realize oil-free
The exhaust work of screw vacuum pump.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of rotors for dry double-screw vacuum pump, including power motor (1), which is characterized in that the side of the power motor (1) is equipped with
The bottom surface of vacuum pump case (2), the vacuum pump case (2) has been bolted firm banking (3), the power motor (1)
Inner cavity is equipped with machine shaft (4), and one end of the machine shaft (4) is fixedly connected with rotating joint (5), the rotation shaft coupling
Device (5) is fixedly connected with the first rotation screw rod (6) far from the side of machine shaft (4), and first rotation screw rod (6) is separate to be turned
The side of dynamic shaft coupling (5) is fixedly connected with the first rotate gear (9), and the flank of tooth of first rotate gear (9) is connected with biography
The flank of tooth of moving gear (11), the transmission gear (11) is connected with the second rotate gear (10), second rotate gear (10)
Side be fixedly connected with the second rotation screw rod (7), first rotation screw rod (6) and second rotates screw rod (7) shaft table
Face is serially connected with screw-bearing (8), and the vacuum pump case (2) offers gas outlet (13) close to the top surface of power motor (1),
The top surface and bottom surface of the vacuum pump case (2) offer air inlet (12), and the bottom of the vacuum pump case (2) is equipped with bottom
The bottom of seat screw rod (14), the pedestal screw rod (14) is equipped with pedestal nut (15).
2. a kind of rotors for dry double-screw vacuum pump according to claim 1, which is characterized in that it is described first rotation screw rod (6) and
Second rotation screw rod (7) is arranged in same level, axis of first rotation screw rod (6) close to the first rotate gear (9)
Face is serially connected with screw-bearing (8), and the both ends axial plane of second rotation screw rod (7) is serially connected with screw-bearing (8).
3. a kind of rotors for dry double-screw vacuum pump according to claim 1, which is characterized in that first rotate gear (9) and
The inside flank of second rotate gear (10) is connected with transmission gear (11), and the first rotate gear (9) and the second rotate gear
(10) the central horizontal angle at center and transmission gear (11) is 60 degree.
4. a kind of rotors for dry double-screw vacuum pump according to claim 1, which is characterized in that the power motor (1) and rotation
Shaft coupling (5) setting is in the same side of vacuum pump case (2), and rotating joint (5) is arranged in the interior of vacuum pump case (2)
The inner cavity of portion, the first rotation screw rod (6) and the second rotation screw rod (7) setting in vacuum pump case (2).
5. a kind of rotors for dry double-screw vacuum pump according to claim 1, which is characterized in that the quantity of the air inlet (12) is
Two, the quantity of gas outlet (13) is one, and air inlet (12) is symmetricly set on the top surface and bottom surface of vacuum pump case (2).
6. a kind of rotors for dry double-screw vacuum pump according to claim 1, which is characterized in that the machine shaft (4), rotation connection
Axis device (5) and the first rotation screw rod (6) three are centrally disposed on same level straight line.
7. a kind of rotors for dry double-screw vacuum pump according to claim 1, which is characterized in that the pedestal screw rod (14) and pedestal
The quantity of nut (15) is four groups, and four groups of pedestal screw rods (14) are uniformly arranged on the bottom surface of vacuum pump case (2), four groups of pedestals
Nut (15) is arranged in the top surface of corresponding position firm banking (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811513543.8A CN109488590A (en) | 2018-12-11 | 2018-12-11 | A kind of rotors for dry double-screw vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811513543.8A CN109488590A (en) | 2018-12-11 | 2018-12-11 | A kind of rotors for dry double-screw vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109488590A true CN109488590A (en) | 2019-03-19 |
Family
ID=65709780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811513543.8A Pending CN109488590A (en) | 2018-12-11 | 2018-12-11 | A kind of rotors for dry double-screw vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109488590A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200996375Y (en) * | 2006-10-14 | 2007-12-26 | 杨庆 | Spiral hydraulic pump |
| CN202900656U (en) * | 2012-11-09 | 2013-04-24 | 江阴天田真空设备制造有限公司 | Screw vacuum pump |
| CN204900256U (en) * | 2015-08-20 | 2015-12-23 | 张善君 | There are not two screw drive structures of oil |
| CN205064277U (en) * | 2015-08-28 | 2016-03-02 | 芜湖环球汽车配件有限公司 | Novel dry -type screw vacuum pump |
| CN205937097U (en) * | 2016-08-18 | 2017-02-08 | 黄山工业泵制造有限公司 | Simplify double suction double -screw pump of structure |
-
2018
- 2018-12-11 CN CN201811513543.8A patent/CN109488590A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200996375Y (en) * | 2006-10-14 | 2007-12-26 | 杨庆 | Spiral hydraulic pump |
| CN202900656U (en) * | 2012-11-09 | 2013-04-24 | 江阴天田真空设备制造有限公司 | Screw vacuum pump |
| CN204900256U (en) * | 2015-08-20 | 2015-12-23 | 张善君 | There are not two screw drive structures of oil |
| CN205064277U (en) * | 2015-08-28 | 2016-03-02 | 芜湖环球汽车配件有限公司 | Novel dry -type screw vacuum pump |
| CN205937097U (en) * | 2016-08-18 | 2017-02-08 | 黄山工业泵制造有限公司 | Simplify double suction double -screw pump of structure |
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