CN108119404A - A kind of novel two stage double acting cone structure vacuum pump - Google Patents
A kind of novel two stage double acting cone structure vacuum pump Download PDFInfo
- Publication number
- CN108119404A CN108119404A CN201711383524.3A CN201711383524A CN108119404A CN 108119404 A CN108119404 A CN 108119404A CN 201711383524 A CN201711383524 A CN 201711383524A CN 108119404 A CN108119404 A CN 108119404A
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- China
- Prior art keywords
- pump
- vacuum pump
- end cap
- transmission side
- distributor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Disclosed by the invention is a kind of novel two stage double acting cone structure vacuum pump, it includes pump shaft (1), impeller (2), the pump housing (3), non-drive side distributor (4), non-drive side end cap (6), non-transmision end parts of bearings (8), transmission side distributor (9), it is driven side end cap (10), vacuum pump fluid infusion (11), driving end parts of bearings (12) and air-inlet of vacuum pump (13), eccentric structure and lower eccentric structure is respectively adopted in the two stages of compression cavity of the pump housing (3), non-drive side distributor (4) and transmission side distributor (9) are cone shape, it is connected between non-drive side end cap (6) and transmission side end cap (10) with communicating pipe (5).The present invention is a kind of new water-ring vacuum pump, has the characteristics that compression efficiency is high, energy-efficient, can obtain higher vacuum, and vacuum degree can at least reach more than 33mbar or higher, can meet the needs of most of needs higher vacuum user.
Description
Technical field
The present invention relates to a kind of vacuum pump, more particularly to a kind of novel two stage double acting cone structure vacuum pump belongs to machine
Tool field of engineering technology.
Background technology
Water-ring vacuum pump since the advent of the world, because with it is simple in structure, easy to maintenance, mechanical wear is small, service life is long,
The characteristics of rate of air sucked in required is big is increasingly widely used.Liquid-ring type oil-sealed rotary pump is divided into two big type structures at present：It is single
Grade vacuum pump and two-stage vacuum pump can be divided into area vacuum pump and cone vacuum pump, wherein area vacuum by dispensing arrangement again
The air inlet and exhaust ports design of pump are covered in the planar side of pump, from impeller side into outlet；The air inlet of cone vacuum pump and
Exhaust ports design is on the cone seat of pump, from impeller internal into outlet.General vacuum pump is the centrifugation generated by impeller rotation
Power and vacuum Pump Suction Nozzle generate vacuum.Design high vacuum is pumped to area vacuum only to be needed in suction inlet position in advance with regard to that can reach
To requirement, but the operational efficiency of area vacuum pump is relatively low, and energy consumption is excessively high and vacuum pump water is severely restricted.
Cone vacuum pump higher than the technology content that area vacuum pumps, but the impeller of cone vacuum pump is due to being to be embedded in
Impeller internal, it is impossible to high vacuum be reached by Position Design, can only use multi-stage compression that could realize this target.For cone
For body vacuum pump, be divided into as single-stage vacuum pump and two-stage vacuum pump, they difference lies in gas be by one stage of compression and
Two stages of compression.Single-stage cone vacuum pump uses one stage of compression, and general vacuum degree is not very high, only up to reach 80mbar-
100mbar, two-stage vacuum pump use two stages of compression, and vacuum degree can reach 50mbar-80mbar.But it is taken out for condenser of power station
The application scenarios such as vacuum system (water chiller), medical drying, crystallization, tail gas recycle, chemistry fission are required for higher vacuum
Degree, the design of current vacuum pump obviously cannot meet current industrial requirement, it is necessary to which user's need could be met by technically breaking through
It asks.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of novel two stage double acting cone structure vacuum pump, this is true
Sky pump can obtain the tolerance of higher vacuum degree and bigger, while structure is compacter rationally, so as to meet user's use demand.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of novel two stage double acting cone structure vacuum pump, composition include pump shaft, impeller, the pump housing, non-drive side point
Orchestration, non-drive side end cap, non-transmision end parts of bearings, transmission side distributor, transmission side end cap, vacuum pump fluid infusion, transmission
End bearing component and air-inlet of vacuum pump；Pump shaft passes through the pump housing, and non-transmision end parts of bearings is mounted on the non-drive side of pump shaft
Portion, driving end parts of bearings are mounted on the transmission side end of pump shaft；Impeller is connected on pump shaft and in the pump housing；Non-drive side
Distributor is connected with non-drive side end cap, and transmission side distributor is connected with transmission side end cap, and non-drive side end cap is fixed on the pump housing
Non-transmision end on, transmission side end cap be fixed on the driving end of the pump housing, the pump housing have two stages of compression cavity, suction side
Compression chamber uses upper eccentric structure, and discharge side compression chamber uses lower eccentric structure, suction side compression chamber and discharge side pressure
It is separated between contracting cavity with partition plate；Non-drive side distributor and transmission side distributor are cone shape, and non-drive side distributor is big
Cone mouth be fixed on non-drive side end cap, small cone mouth is inlaid into the non-drive side inner cavity conical surface of impeller；Transmission side distributes
The big cone mouth of device is fixed on transmission side end cap, small cone mouth is inlaid into the transmission side inner cavity conical surface of impeller；Non-drive side
It is connected between lid and transmission side end cap with communicating pipe；Vacuum pump fluid infusion is arranged on the lower part of the pump housing.
In above-mentioned novel two stage double acting cone structure vacuum pump, it is preferable that, at the stuffing-box of the pump shaft
Equipped with protection axle sleeve and axle envelope component, seal cage is housed equipped with filler, filler centre on prevention shaft set.
In foregoing novel two stage double acting cone structure vacuum pump, the non-drive side distributor and transmission side distributor
Cone angle be preferably designed for 6 °~10 °.
In foregoing novel two stage double acting cone structure vacuum pump, preferred scheme is, in the impeller and the pump housing
Between seal cage is installed.
In foregoing novel two stage double acting cone structure vacuum pump, as a preferred embodiment, the transmission side distribution
The big cone mouth of device is directly connected with air-inlet of vacuum pump.
In foregoing novel two stage double acting cone structure vacuum pump, the lower part of the pump housing is preferably provided at communicating pipe.
Beneficial effects of the present invention：Compared with prior art, the invention has the characteristics that：
(1) non-drive side distributor and transmission side distributor are designed using cone structure, and cone angle design is 8 ° or so, can be with
It passes the gas through big cone mouth to be collected, be compressed raising gas flow rate by small cone mouth, so that the gas collected
Can be inhaled into higher flow velocity in vacuum pump, and it is using both stage impellers, gas by being discharged after two stages of compression, so
Kind structure for vacuum pump is referred to as twin-stage cone structure vacuum pump, and compression efficiency higher can obtain higher vacuum degree.
(2) since water-ring vacuum pump is that have pressure to supply water, the pressure of water is generally 0.3MPa, and the present invention is utilized in design
Pressure difference before and after vacuum pump, with connecting between transmission side (suction side) end cap of vacuum pump and non-drive side (discharge side) end cap
Pipe connects.And the present invention will be designed in the pump housing lower part communicating pipe, can utilize dead weight and the pressure of water, the speed of water can be turned
It changing potential energy into, certain vacuum is formed in the suction side compression chamber of vacuum pump, it forms vacuum with vacuum pump centrifugal force and is superimposed,
So as to form higher vacuum.By this technology, general vacuum can at least reach more than 33mbar or higher, simultaneously because
The increase of flow velocity, vacuum pump can aspirate more tolerance in same time, so as to more energy-efficient.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the impeller of the present invention and pump housing sectional view；
Fig. 3 is the dispensing arrangement schematic diagram of the present invention；
Fig. 4 is the communicating pipe outline drawing of the present invention；
Fig. 5 is the fundamental diagram of the present invention；
1- pump shafts in figure；2- impellers；The 3- pump housings；4- non-transmision end distributors；5- communicating pipes, the non-drive side end caps of 6-；7-
Axle envelope component；8- non-transmision end parts of bearings；9- transmission side distributors；10- is driven side end cap；11- vacuum pump fluid infusions；12-
Driving end parts of bearings；13- air-inlet of vacuum pump；14- protects axle sleeve；15- vacuum pumps suction side side cover；16- vacuum pumps are discharged
Side side cover；17- distributor air inlets；18- distributor exhaust outlets.
The present invention is further illustrated with reference to the accompanying drawings and detailed description, so that advantages of the present invention and spy
Sign can be easier to be readily appreciated by one skilled in the art.
Specific embodiment
Embodiment 1：As shown in Figure 1, including pump shaft 1, impeller 2, the pump housing 3, non-drive side distributor 4, non-drive side end cap
6th, non-transmision end parts of bearings 8, transmission side distributor 9, transmission side end cap 10, vacuum pump fluid infusion 11, driving end parts of bearings
12 and air-inlet of vacuum pump 13.Pump shaft 1 passes through the pump housing 3, and non-transmision end parts of bearings 8 is mounted on the non-drive side end of pump shaft 1,
Driving end parts of bearings 12 is mounted on the transmission side end of pump shaft 1.Impeller 2 is connected on pump shaft 1 and in the pump housing 3.The pump housing 3
With two stages of compression cavity, the suction side compression chamber of the pump housing 3 using upper eccentric structure, adopt by the discharge side compression chamber of the pump housing 3
It with lower eccentric structure, is separated between suction side compression chamber and discharge side compression chamber with partition plate, prevents the crossfire of gas.Impeller
Seal cage is installed between 2 and the pump housing 3, is sealed by seal cage.
Non-drive side distributor 4 is connected with non-drive side end cap 6 by bolt, and transmission side distributor 9 is by bolt with passing
Dynamic side end cap 10 is connected.Non-drive side end cap 6 is bolted on the non-transmision end of the pump housing 3, and transmission side end cap 10 passes through
Bolt is fixed on the driving end of the pump housing 3.
For convenience of gas is collected, non-drive side distributor 4 and transmission side distributor 9 are designed to cone shape, non-drive side
The cone angle design of distributor 4 and transmission side distributor 9 is 8 °, is collected with passing the gas through big cone mouth, (similar after contraction
Text spits inner pipe operation principle) it is discharged by small cone mouth, gas is made to be compressed after being accelerated into vacuum pump impeller 2.Non- biography
The big cone mouth of dynamic side distributor 4 is bolted on non-drive side end cap 6, small cone mouth is inlaid into the non-drive of impeller 2
In the conical surface of side inner cavity；The big cone mouth of transmission side distributor 9 is bolted on transmission side end cap 10, small cone mouth is inlaid into
In the transmission side inner cavity conical surface of impeller 2, the big cone mouth of transmission side distributor 9 is directly connected with air-inlet of vacuum pump 13.
It is connected between non-drive side end cap 6 and transmission side end cap 10 with communicating pipe 5, communicating pipe 5 is arranged under the pump housing 3
Portion.In order to be protected to pump shaft 1, equipped with protection axle sleeve 14 and axle envelope component 7 at the stuffing-box of pump shaft 1, in protection axle sleeve
Filler is moistened with sealing fluid equipped with seal cage, sealing fluid of the sealing water in pump equipped with filler, filler centre on 14
Sliding, lubricating fluid is designed using self sealss.
Operation principle：As shown in figure 5, gas is sucked by vacuum pump suction side side cover 15 in transmission side distributor 9, due to passing
Dynamic side distributor 9 is entered using vertebral body structure, gas by the big cone mouth of transmission side distributor 9, and by transmission side distributor 9
After small cone mouth, gas is drastically shunk, and gas flow rate substantially increases, and is accelerated into the impeller 2 of vacuum pump, impeller 2 rotates
Centrifugal force is generated, gas is compressed, and compression chamber completes the first second compression in suction side.Then gas passes through transmission side distributor
9 small cone mouths reduce gas velocity, by connecting non-drive side end cap 6 and entering the communicating pipe 5 being driven between side end cap 10 non-
The big cone mouth of transmission side distributor 4, and after the small cone mouth of non-drive side distributor 4, gas is drastically shunk, gas flow rate
It is apparent to increase, it accelerates into the impeller 2 of vacuum pump, the rotation of impeller 2 generates centrifugal force, and second is completed in discharge side compression chamber
Then second compression passes through vacuum pump after the small cone mouth of non-drive side distributor 4 is substantially reduced gas velocity (reduction row pressure)
Discharge side side cover 16 is discharged outside vacuum pump.Since the suction side compression chamber of the pump housing 3 is designed to upper eccentric structure, side compression is discharged
Cavity is then designed to lower eccentric structure, is separated between suction side compression chamber and discharge side compression chamber with partition plate, can prevent
The crossfire of gas.Gap among the pump housing 3 is sealed by seal cage.
Vacuum pump fluid infusion 11 is arranged on the lower part of the pump housing 3, and (why vacuum pump fluid infusion 11 is designed in lower part, mainly
Water is supplied water in lower part, and water is the flowing out of communicating pipe 5), supplement water is supplied from bottom, and pressure of supply water is 0.3MPa or so,
Middle sub-fraction is used as the sealing fluid of vacuum pump by the entrance of cone, it plays the role of sealing in centre with transferring energy；
Most of liquid enters non-drive side end cap 6 by communicating pipe 5, is able to differential pressure (the entrance supplemental water pressure 0.3MPa of supplement water
With the pressure difference of discharge side 0.1MPa), due to water, flow at high speed will be formed in vacuum pump suction side side cover 15 within communicating pipe 5
Certain vacuum, it is superimposed with the vacuum that turbine centrifugal power is formed, and just higher vacuum can be formed in air-inlet of vacuum pump 13, due to
Vacuum degree is higher, and vacuum pump gas flow rate also correspondingly increases, thus vacuum pump at the same time it is interior will aspirate it is more
Tolerance.
Embodiment 2：Including pump shaft 1, impeller 2, the pump housing 3, non-drive side distributor 4, non-drive side end cap 6, non-transmision end
Parts of bearings 8, transmission side distributor 9, transmission side end cap 10, vacuum pump fluid infusion 11, driving end parts of bearings 12 and vacuum pump
Air inlet 13.Pump shaft 1 passes through the pump housing 3, and non-transmision end parts of bearings 8 is mounted on the non-drive side end of pump shaft 1, is driven end bearing
Component 12 is mounted on the transmission side end of pump shaft 1.Impeller 2 is connected on pump shaft 1 and in the pump housing 3.The pump housing 3 has two-stage pressure
Contracting cavity, the suction side compression chamber of the pump housing 3 is using upper eccentric structure, and the discharge side compression chamber of the pump housing 3 is using lower eccentric knot
Structure is separated between suction side compression chamber and discharge side compression chamber with partition plate.Seal cage is installed between impeller 2 and the pump housing 3, according to
It is sealed by seal cage.Non-drive side distributor 4 is connected with non-drive side end cap 6 by bolt, and transmission side distributor 9 passes through
Bolt is connected with transmission side end cap 10.Non-drive side end cap 6 is bolted on the non-transmision end of the pump housing 3, is driven side
Lid 10 is bolted on the driving end of the pump housing 3.Non-drive side distributor 4 and transmission side distributor 9 are designed to cone-shaped
The cone angle design of shape, non-drive side distributor 4 and transmission side distributor 9 is 6 °, is collected, passed through with passing the gas through big cone mouth
(similar text spit inner pipe operation principle) is discharged by small cone mouth after contraction, make gas be accelerated after into vacuum pump impeller 2 into
Row compression.The big cone mouth of non-drive side distributor 4 is bolted on non-drive side end cap 6, small cone mouth is inlaid into leaf
In the non-drive side inner cavity conical surface of wheel 2；The big cone mouth of transmission side distributor 9 is bolted on transmission side end cap 10, is small
Cone mouth be inlaid into the transmission side inner cavity conical surface of impeller 2, the big cone mouth of transmission side distributor 9 directly with air-inlet of vacuum pump 13
It is connected.It is connected between non-drive side end cap 6 and transmission side end cap 10 with communicating pipe 5, communicating pipe 5 is arranged on the lower part of the pump housing 3.For
Pump shaft 1 is protected, equipped with protection axle sleeve 14 and axle envelope component 7 at the stuffing-box of pump shaft 1, is filled on protection axle sleeve 14
There is filler, filler is lubricated with sealing fluid, is lubricated equipped with seal cage, sealing fluid of the sealing water in pump among filler
Liquid is designed using self sealss.
Embodiment 3：Including pump shaft 1, impeller 2, the pump housing 3, non-drive side distributor 4, non-drive side end cap 6, non-transmision end
Parts of bearings 8, transmission side distributor 9, transmission side end cap 10, vacuum pump fluid infusion 11, driving end parts of bearings 12 and vacuum pump
Air inlet 13.Pump shaft 1 passes through the pump housing 3, and non-transmision end parts of bearings 8 is mounted on the non-drive side end of pump shaft 1, is driven end bearing
Component 12 is mounted on the transmission side end of pump shaft 1.Impeller 2 is connected on pump shaft 1 and in the pump housing 3.The pump housing 3 has two-stage pressure
Contracting cavity, the suction side compression chamber of the pump housing 3 is using upper eccentric structure, and the discharge side compression chamber of the pump housing 3 is using lower eccentric knot
Structure is separated between suction side compression chamber and discharge side compression chamber with partition plate.Non-drive side distributor 4 and non-drive side end cap
6 are connected by bolt, and transmission side distributor 9 is connected by bolt with transmission side end cap 10.Non-drive side end cap 6 is consolidated by bolt
It is scheduled on the non-transmision end of the pump housing 3, transmission side end cap 10 is bolted on the driving end of the pump housing 3.Non-drive side distribution
Device 4 and transmission side distributor 9 are designed to cone shape, and the cone angle design of non-drive side distributor 4 and transmission side distributor 9 is
It 10 °, is collected with passing the gas through big cone mouth, (similar text spits inner pipe operation principle) is arranged by small cone mouth after contraction
Go out, gas is made to be compressed after being accelerated into vacuum pump impeller 2.The big cone mouth of non-drive side distributor 4 is bolted
On non-drive side end cap 6, small cone mouth is inlaid into the non-drive side inner cavity conical surface of impeller 2；The big cone of transmission side distributor 9
Mouth is bolted on transmission side end cap 10, small cone mouth is inlaid into the transmission side inner cavity conical surface of impeller 2, transmission side point
The big cone mouth of orchestration 9 is directly connected with air-inlet of vacuum pump 13.Communicating pipe is used between non-drive side end cap 6 and transmission side end cap 10
5 connections, are arranged on the middle part of the pump housing 3 communicating pipe 5.In order to be protected to pump shaft 1, equipped with protection at the stuffing-box of pump shaft 1
Axle sleeve 14 and axle envelope component 7, equipped with filler on protection axle sleeve 14, filler centre is equipped with seal cage, and sealing water is in pump
Sealing fluid is lubricated filler with sealing fluid, and lubricating fluid is designed using self sealss.
Embodiments of the present invention are not limited to above-described embodiment, and that is made on the premise of present inventive concept is not departed from is various
Within change or replacement all belong to the scope of protection of the present invention.
Claims (6)
1. a kind of novel two stage double acting cone structure vacuum pump, including pump shaft (1), impeller (2), the pump housing (3), non-drive side point
It is orchestration (4), non-drive side end cap (6), non-transmision end parts of bearings (8), transmission side distributor (9), transmission side end cap (10), true
Sky pump fluid infusion (11), driving end parts of bearings (12) and air-inlet of vacuum pump (13)；Pump shaft (1) passes through the pump housing (3), non-drive
End bearing component (8) is mounted on the non-drive side end of pump shaft (1), and driving end parts of bearings (12) is mounted on the biography of pump shaft (1)
Dynamic side end；Impeller (2) is connected on pump shaft (1) and in the pump housing (3)；Non-drive side distributor (4) and non-drive side
It covers (6) to be connected, transmission side distributor (9) is connected with transmission side end cap (10), and non-drive side end cap (6) is fixed on the pump housing (3)
On non-transmision end, transmission side end cap (10) is fixed on the driving end of the pump housing (3), it is characterised in that：The pump housing (3) has
Two stages of compression cavity, suction side compression chamber use upper eccentric structure, and discharge side compression chamber uses lower eccentric structure, sucking
It is separated between side compression cavity and discharge side compression chamber with partition plate；Non-drive side distributor (4) and transmission side distributor (9) are
Cone shape, the big cone mouth of non-drive side distributor (4) is fixed on non-drive side end cap (6), small cone mouth is inlaid into impeller
(2) in the non-drive side inner cavity conical surface；The big cone mouth of transmission side distributor (9) is fixed on transmission side end cap (10), small cone
Mouth is inlaid into the transmission side inner cavity conical surface of impeller (2)；Communicating pipe is used between non-drive side end cap (6) and transmission side end cap (10)
(5) connect；Vacuum pump fluid infusion (11) is arranged on the lower part of the pump housing (3).
2. novel two stage double acting cone structure vacuum pump according to claim 1, it is characterised in that：In the pump shaft
(1) equipped with protection axle sleeve (14) and axle envelope component (7) at stuffing-box, filler is housed on protection axle sleeve (14), among filler
Equipped with seal cage.
3. novel two stage double acting cone structure vacuum pump according to claim 1, it is characterised in that：The non-drive side
The cone angle of distributor (4) and transmission side distributor (9) is 6 °~10 °.
4. novel two stage double acting cone structure vacuum pump according to claim 1, it is characterised in that：In the impeller
(2) seal cage is installed between the pump housing (3).
5. novel two stage double acting cone structure vacuum pump according to claim 1, it is characterised in that：The transmission side point
The big cone mouth of orchestration (9) is directly connected with air-inlet of vacuum pump (13).
6. novel two stage double acting cone structure vacuum pump according to claim 1, it is characterised in that：The communicating pipe
(5) it is arranged on the lower part of the pump housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383524.3A CN108119404A (en) | 2017-12-20 | 2017-12-20 | A kind of novel two stage double acting cone structure vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383524.3A CN108119404A (en) | 2017-12-20 | 2017-12-20 | A kind of novel two stage double acting cone structure vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108119404A true CN108119404A (en) | 2018-06-05 |
Family
ID=62230398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711383524.3A Pending CN108119404A (en) | 2017-12-20 | 2017-12-20 | A kind of novel two stage double acting cone structure vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108119404A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5612095A (en) * | 1979-05-21 | 1981-02-05 | Cambridge Thermionic Corp | Turbo molecular vacuum pump |
| US5632597A (en) * | 1995-03-31 | 1997-05-27 | Osaka Vacuum, Ltd. | Thread groove type vacuum pump |
| CN103807442A (en) * | 2013-08-27 | 2014-05-21 | 东营海森密封技术有限责任公司 | Self-cleaning mechanical seal cavity structure |
| CN105485030A (en) * | 2015-12-29 | 2016-04-13 | 扬州长江水泵有限公司 | Single-level cone vacuum pump |
| CN205172984U (en) * | 2015-11-12 | 2016-04-20 | 湖北同方高科泵业有限公司 | Large -scale energy -conserving doublestage cone liquid ring vacuum pump |
-
2017
- 2017-12-20 CN CN201711383524.3A patent/CN108119404A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5612095A (en) * | 1979-05-21 | 1981-02-05 | Cambridge Thermionic Corp | Turbo molecular vacuum pump |
| US5632597A (en) * | 1995-03-31 | 1997-05-27 | Osaka Vacuum, Ltd. | Thread groove type vacuum pump |
| CN103807442A (en) * | 2013-08-27 | 2014-05-21 | 东营海森密封技术有限责任公司 | Self-cleaning mechanical seal cavity structure |
| CN205172984U (en) * | 2015-11-12 | 2016-04-20 | 湖北同方高科泵业有限公司 | Large -scale energy -conserving doublestage cone liquid ring vacuum pump |
| CN105485030A (en) * | 2015-12-29 | 2016-04-13 | 扬州长江水泵有限公司 | Single-level cone vacuum pump |
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Application publication date: 20180605 |
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| RJ01 | Rejection of invention patent application after publication |