CN108223324A - Space star biconvex wheel pump - Google Patents
Space star biconvex wheel pump Download PDFInfo
- Publication number
- CN108223324A CN108223324A CN201711485494.7A CN201711485494A CN108223324A CN 108223324 A CN108223324 A CN 108223324A CN 201711485494 A CN201711485494 A CN 201711485494A CN 108223324 A CN108223324 A CN 108223324A
- Authority
- CN
- China
- Prior art keywords
- bearing
- fixed
- hydraulic cylinder
- baffle
- supporting rack
- Prior art date
- 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.)
- Granted
Links
- 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 abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000009738 saturating Methods 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 abstract description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
- F04B1/0536—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units
- F04B1/0538—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units located side-by-side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0413—Cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0421—Cylinders
Abstract
A kind of space star biconvex wheel pump.It includes pedestal, outer baffle, lower shaft supporting rack, groove, preloading spring, Internal baffle, thin bar, piston rod, hydraulic cylinder, piston, fixed link, apical axis supporting rack, bearing air cover, camshaft, upper bearing, bearing roller, cam, lower bearing, bearing (ball) cover, circlip and motor；Advantage of the present invention：Six hydraulic cylinders are put in upper and lower two layers of cloth, and the hydraulic cylinder of forepart four is differed with two, rear portion hydraulic cylinder size；Two cams are arranged symmetrically using 180 ° of phase differences so that whole pump is laid out in spacial multi-angle.Straight reciprocating motion is carried out using biconvex wheel drive feed mechanism, structure is compacter, reduces the weight and volume of whole pump.Piston rod movement has defined phase angle, and the output that ensure that deicing liquid by six hydraulic cylinder flow summations has smaller pressure fluctuation.The multiple piston rods of biconvex wheel drive work at the same time, and are more easy to realize the requirement of big flow operation, substantially increase the working efficiency of the pump.
Description
Technical field
The invention belongs to civil aviaton's special type ground installation technical field, more particularly to a kind of space star biconvex wheel pump.
Background technology
Aircraft is awing or when resting in ground, since droplets freeze or steam sublimate and accumulate in certain portions of aircraft
Position frequently results in these positions aggregation ice sheet.Ice sheet not only increases the flight resistance of aircraft, reduces its flight lift, and broken
The aeroperformance of flying coffin seriously affects the safety of flight.Therefore, it is vital deicing processing to be carried out to aircraft.
Currently, the reciprocating pump that deicing liquid-supplying system uses is mostly toggle.This mechanism driving link is more, uses
Inefficiency, and flow and pressure fluctuation are larger, during feed flow, whole system can be caused to impact and worn, cause it
The resonance of his mechanical part, the service life serious curtailment and maintenance cost for causing complete machine increase.
Invention content
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of space star biconvex wheel pumps.
In order to achieve the above object, space star biconvex wheel pump provided by the invention includes pedestal, outer baffle, lower shaft support
It is frame, groove, preloading spring, Internal baffle, thin bar, piston rod, hydraulic cylinder, piston, fixed link, apical axis supporting rack, bearing air cover, convex
Wheel shaft, upper bearing, bearing roller, cam, lower bearing, bearing (ball) cover, circlip and motor；Wherein pedestal is set for level
The polygonal panel put；Three pieces of outer baffles are vertically fixed in a manner of the phase of 90 ° of interval in the middle part of the surface both sides and rear end of pedestal,
It is wherein arranged in parallel positioned at two pieces of outer baffles of both sides, the outer baffle in the middle part of rear end mutually hangs down with the outer baffle positioned at both sides
Directly；One piece is respectively equipped on the inside of every piece of outer baffle to be arranged in parallel with outer baffle and lower end is fixed on interior gear in susceptor surface
Plate；An opening-like hydraulic cylinder in both ends is respectively equipped between the corresponding Internal baffle top and the bottom of every piece of outer baffle, and
Outer baffle and Internal baffle upper and lower side and both sides position are fixed using more horizontal positioned fixed links；On outer baffle with hydraulic pressure
The corresponding position in cylinder outer end is equipped with inlet and liquid outlet；Lower shaft supporting rack is T-shaped plate, and three outer ends are separately fixed at three
On the lower end outside face of block Internal baffle；In the middle part of the lateral surface of every piece of Internal baffle and lower end is utilized respectively the one of screw and a groove
End connection, each groove piece preloading spring of interior installation；The outer end screw of every horizontally disposed piston rod is with being arranged on one
Piston in a hydraulic cylinder is connected；The radially mounted bolt in inner end of every piston rod, one bearing rolling of installation on bolt
Son, and be fixed with washer and nut；The lower end of every thin bar is inserted in a groove, the radially mounted spiral shell in lower part
Bolt is installed a bearing roller on bolt, and is fixed with washer and nut；The upper end of every thin bar is located at it through one
It is fixed in the middle part of the piston rod of upside and using nut；Apical axis supporting rack is T-shaped plate, and three outer ends, which are separately fixed in three pieces, to be kept off
On the upper end lateral surface of plate；Upper bearing is installed respectively under in the centre bore formed in the middle part of apical axis supporting rack and lower shaft supporting rack
Portion's bearing is located at the position installation on the outside of centre bore on apical axis supporting rack surface there are one bearing air cover, and uses multiple screws
Tightening；The upper end of camshaft is connected after sequentially passing through the centre bore of upper bearing and bearing air cover with the output shaft of motor, under
End is fixed in the centre bore of lower bearing and is sealed using the bearing (ball) cover being mounted on the downside of lower bearing；Two horizontal positioned
The cooperation of keyway and flat key that is formed by its central hole of cam be separately mounted on the top and the bottom outer circumference surface of camshaft,
And it is positioned and is fixed using the shaft shoulder on camshaft and circlip；The edge of each cam is located at interior gear with three simultaneously
Plate up or down portion and bearing roller on the piston rod inner end is tangent.
It is of different sizes positioned at four hydraulic cylinders of forepart and two hydraulic cylinders positioned at rear portion in six hydraulic cylinders.
Two cams are arranged symmetrically in 180 ° of phase differences, and the track of cam is the phase according to each piston rod
The design of the size of angle and hydraulic cylinder.
The bearing roller outer edge mounted on thin bar lower part is in contact with the top surface side of groove.
Space star biconvex wheel pump provided by the invention has the following advantages that：
1st, multiple feed mechanisms are respectively driven using double cam and carries out feed flow, compared with conventional linkage mechanism, structure is more
Step up to gather, reduce the weight and volume of whole pump.
2nd, six hydraulic cylinders are put in upper and lower two layers of cloth, and the hydraulic cylinder of forepart four is differed with two, rear portion hydraulic cylinder size；
Two cams are arranged symmetrically using 180 ° of phase differences so that whole pump is laid out in spacial multi-angle.Piston rod movement has defined
Phase angle, the output that ensure that deicing liquid by six hydraulic cylinder flow summations have smaller pressure fluctuation.
3rd, the multiple piston rods of biconvex wheel drive work at the same time, and are more easy to realize the requirement of big flow operation, substantially increase this
The working efficiency of pump.
4th, cam used, supporting rack, baffle, piston rod, thin bar, hydraulic cylinder and piston size are essentially identical so that
Processing and manufacturing is simple.
Description of the drawings
Fig. 1 is space star double cam pump configuration stereogram provided by the invention.
Fig. 2 be in Fig. 4 A-A to sectional view.
Fig. 3 be in Fig. 4 B-B to sectional view.
Fig. 4 is space star double cam pump configuration vertical view provided by the invention.
Specific embodiment
Space star biconvex wheel pump provided by the invention is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Fig. 1-Fig. 4, space star biconvex wheel pump provided by the invention includes pedestal 1, outer baffle 2, lower shaft support
Frame 3, groove 4, preloading spring 5, Internal baffle 6, thin bar 7, piston rod 8, hydraulic cylinder 9, piston 10, fixed link 13, apical axis supporting rack
15th, bearing air cover 16, camshaft 17, upper bearing 18, bearing roller 22, cam 28, lower bearing 29, bearing (ball) cover 30, bullet
Property baffle ring 34 and motor 36；Wherein pedestal 1 is horizontally disposed polygonal panel；Three pieces of outer baffles 2 are in a manner of the phase of 90 ° of interval
It is vertically fixed in the middle part of the surface both sides and rear end of pedestal 1, wherein two pieces of outer baffles 2 positioned at both sides are arranged in parallel, after being located at
Outer baffle 2 and the outer baffle 2 positioned at both sides for holding middle part are perpendicular；The inside of every piece of outer baffle 2 is respectively equipped with one piece and outer gear
Plate 2 is arranged in parallel and lower end is fixed on Internal baffle 6 on 1 surface of pedestal；The corresponding Internal baffle of every piece of outer baffle 2 is about 6
An opening-like hydraulic cylinder in both ends 9, and outer baffle 2 and 6 upper and lower side of Internal baffle and both sides position are respectively equipped between portion
It is fixed using more horizontal positioned fixed links 13；On outer baffle 2 feed liquor is equipped with the corresponding position in 9 outer end of hydraulic cylinder
Mouth and liquid outlet；Lower shaft supporting rack 3 is T-shaped plate, and three outer ends are separately fixed on the lower end outside face of three pieces of Internal baffles 6；
It is utilized respectively screw 31 with lower end in the middle part of the lateral surface of every piece of Internal baffle 6 and is connect with one end of a groove 4, in each groove 4
A piece preloading spring 5 is installed；The outer end screw 11 of every horizontally disposed piston rod 8 is with being arranged in a hydraulic cylinder 9
Piston 10 is connected；The radially mounted bolt 20 in inner end of every piston rod 8 installs a bearing roller 22 on bolt 20,
And it is fixed with washer 21 and nut 23；The lower end of every thin bar 7 is inserted in a groove 4, lower part radially mounted one
A bolt is installed a bearing roller 22 on bolt, and is fixed with washer and nut；The upper end of every thin bar 7 runs through one
8 middle part of piston rod of root side disposed thereon is simultaneously fixed using nut 12；Apical axis supporting rack 15 is T-shaped plate, and three outer ends are distinguished
It is fixed on the upper end lateral surface of three pieces of Internal baffles 6；Divide in the centre bore that apical axis supporting rack 15 and 3 middle part of lower shaft supporting rack are formed
Not An Zhuan upper bearing 18 and lower bearing 29, be located on 15 surface of apical axis supporting rack there are one the position installations on the outside of centre bore
Bearing air cover 16, and use multiple 19 tightenings of screw；The upper end of camshaft 17 sequentially passes through upper bearing 18 and bearing air cover
Output shaft after 16 centre bore with motor 36 is connected, and lower end is fixed in the centre bore of lower bearing 29 and use is mounted on down
The bearing (ball) cover 30 of 29 downside of portion's bearing seals；Two horizontal positioned cams 28 are by the keyway that its central hole is formed with putting down
The cooperation of key 35 is separately mounted on the top and the bottom outer circumference surface of camshaft 17, and is kept off using the shaft shoulder on camshaft 17 and elasticity
Circle 34 is positioned and is fixed；The edge of each cam 28 is located at 6 up or down portion of Internal baffle with three and simultaneously mounted on piston
Bearing roller 22 on 8 inner end of bar is tangent.
Positioned at four hydraulic cylinders 9 of forepart with being located at two 9 sizes of hydraulic cylinder at rear portion not in six hydraulic cylinders
Together.
Two cams 28 are arranged symmetrically in 180 ° of phase differences, and the track of cam 28 is according to each piston rod 8
Phase angle and hydraulic cylinder 9 size design so that pump flow, pressure fluctuation in feed flow is smaller.
22 outer edge of bearing roller mounted on 7 lower part of thin bar is in contact with the top surface side of groove 4.
Now the operation principle of space star biconvex wheel pump provided by the invention is described below：When need using this pump progress
During the supply of deicing liquid, start motor 36 first, rotated using 36 drive cam shaft 17 of motor, positioned at camshaft about 17
Two cams 28 in portion rotate together also with camshaft 17, thus the bearing roller 22 being fixed on piston rod 8 are driven to move,
Bearing roller 22 drives piston rod 8 and thin bar 7 to carry out feed motion, and 5 energy of preloading spring in groove 4 by bolt 20
It is enough that reset response is played to thin bar 7 and piston rod 8 so that the piston 10 in hydraulic cylinder 9 can move back and forth, and then
The deicing liquid entered in hydraulic cylinder 9 by inlet is compressed, is discharged finally by liquid outlet.Since total is in sky
Between star multi-angle be arranged symmetrically, two cams 28 drive six roots of sensation piston rod 8 simultaneously, and each piston rod 8 has regulation
Phase angle so that pump flow, pressure fluctuation in feed flow is smaller.
Claims (4)
1. a kind of space star biconvex wheel pump, it is characterised in that：The space star biconvex wheel pump includes pedestal (1), outer gear
Plate (2), lower shaft supporting rack (3), groove (4), preloading spring (5), Internal baffle (6), thin bar (7), piston rod (8), hydraulic cylinder
(9), piston (10), fixed link (13), apical axis supporting rack (15), bearing air cover (16), camshaft (17), upper bearing (18),
Bearing roller (22), cam (28), lower bearing (29), bearing (ball) cover (30), circlip (34) and motor (36)；Its midsole
Seat (1) is horizontally disposed polygonal panel；Three pieces of outer baffles (2) are vertically fixed on pedestal (1) in a manner of the phase of 90 ° of interval
In the middle part of surface both sides and rear end, wherein two pieces of outer baffles (2) positioned at both sides are arranged in parallel, the outer baffle in the middle part of rear end
(2) it is perpendicular with the outer baffle (2) positioned at both sides；Be respectively equipped on the inside of every piece of outer baffle (2) one piece it is parallel with outer baffle (2)
Setting and lower end are fixed on the Internal baffle (6) on pedestal (1) surface；The corresponding Internal baffle (6) of every piece of outer baffle (2) is up and down
An opening-like hydraulic cylinder in both ends (9), and outer baffle (2) and Internal baffle (6) upper and lower side and two are respectively equipped between portion
Side is fixed using more horizontal positioned fixed links (13)；It is corresponding with hydraulic cylinder (9) outer end on outer baffle (2)
Position is equipped with inlet and liquid outlet；Lower shaft supporting rack (3) is T-shaped plate, and three outer ends are separately fixed at three pieces of Internal baffles (6)
Lower end outside face on；In the middle part of the lateral surface of every piece of Internal baffle (6) and lower end is utilized respectively screw (31) and groove (4)
One end connects, a piece preloading spring (5) of installation in each groove (4)；The outer end screw of every horizontally disposed piston rod (8)
(11) it is connected with the piston (10) being arranged in a hydraulic cylinder (9)；The radially mounted spiral shell in inner end of every piston rod (8)
Bolt (20) is installed a bearing roller (22) on bolt (20), and is fixed with washer (21) and nut (23)；Every thin bar
(7) lower end is inserted in a groove (4), the radially mounted bolt in lower part, and a bearing roller is installed on bolt
(22), it and with washer and nut is fixed；The upper end of every thin bar (7) is in the piston rod (8) of a side disposed thereon
Portion is simultaneously fixed using nut (12)；Apical axis supporting rack (15) is T-shaped plate, and three outer ends are separately fixed at three pieces of Internal baffles (6)
Upper end lateral surface on；Upper axis is installed respectively in the centre bore formed in the middle part of apical axis supporting rack (15) and lower shaft supporting rack (3)
Hold (18) and lower bearing (29), there are one bearing is saturating for the position installation for being located on the outside of centre bore on apical axis supporting rack (15) surface
It covers (16), and uses multiple screws (19) tightening；The upper end of camshaft (17) sequentially passes through upper bearing (18) and bearing is saturating
It is connected after covering the centre bore of (16) with the output shaft of motor (36), lower end is fixed in the centre bore of lower bearing (29) and uses
Bearing (ball) cover (30) sealing on the downside of lower bearing (29)；Two horizontal positioned cams (28) pass through its central hole
The keyway of formation is separately mounted to the cooperation of flat key (35) on the top and the bottom outer circumference surface of camshaft (17), and utilizes camshaft
(17) shaft shoulder and circlip (34) on are positioned and are fixed；The edge of each cam (28) is located at interior gear with three simultaneously
Plate (6) up or down portion and bearing roller (22) on piston rod (8) inner end is tangent.
2. space star biconvex wheel pump according to claim 1, it is characterised in that：Before being located in six hydraulic cylinders
Four hydraulic cylinders (9) in portion and two hydraulic cylinders (9) positioned at rear portion are of different sizes.
3. space star biconvex wheel pump according to claim 1, it is characterised in that：Two cams (28) are in 180 °
Phase difference is arranged symmetrically, and the track of cam (28) is designed according to the phase angle of each piston rod 8 and the size of hydraulic cylinder (9)
's.
4. space star biconvex wheel pump according to claim 1, it is characterised in that：Described is mounted on thin bar (7) lower part
Bearing roller (22) outer edge be in contact with the top surface side of groove (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485494.7A CN108223324B (en) | 2017-12-29 | 2017-12-29 | Space star-shaped double-cam pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485494.7A CN108223324B (en) | 2017-12-29 | 2017-12-29 | Space star-shaped double-cam pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108223324A true CN108223324A (en) | 2018-06-29 |
| CN108223324B CN108223324B (en) | 2020-01-10 |
Family
ID=62647335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711485494.7A Active CN108223324B (en) | 2017-12-29 | 2017-12-29 | Space star-shaped double-cam pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108223324B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779868A (en) * | 2019-02-12 | 2019-05-21 | 中国民航大学 | The star-like inner cavity pump of multi-cylinder |
| CN109779867A (en) * | 2019-02-12 | 2019-05-21 | 中国民航大学 | Tower lobe pump |
| CN114033645A (en) * | 2021-11-05 | 2022-02-11 | 中国民航大学 | Multi-stage reciprocating pump based on composite connecting rod |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB533961A (en) * | 1939-08-22 | 1941-02-25 | Arthur John Rowledge | Improvements in or relating to reciprocating pumps |
| US4173437A (en) * | 1977-08-01 | 1979-11-06 | The Perkin-Elmer Corporation | Dual-piston reciprocating pump assembly |
| GB2068476A (en) * | 1980-02-01 | 1981-08-12 | Gewerk Eisenhuette Westfalia | Radial-piston pump |
| CN2233997Y (en) * | 1995-01-25 | 1996-08-28 | 李勤章 | Planetary gearing mechanism compressor |
| CN101644242A (en) * | 2009-09-01 | 2010-02-10 | 北京创新通恒科技有限公司 | Large-flow plunger pump for preparing chromatograph in industry |
| CN102094777A (en) * | 2011-01-27 | 2011-06-15 | 北京清博华科技有限公司 | Plunger pump for preparing liquid chromatographic column |
-
2017
- 2017-12-29 CN CN201711485494.7A patent/CN108223324B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB533961A (en) * | 1939-08-22 | 1941-02-25 | Arthur John Rowledge | Improvements in or relating to reciprocating pumps |
| US4173437A (en) * | 1977-08-01 | 1979-11-06 | The Perkin-Elmer Corporation | Dual-piston reciprocating pump assembly |
| GB2068476A (en) * | 1980-02-01 | 1981-08-12 | Gewerk Eisenhuette Westfalia | Radial-piston pump |
| CN2233997Y (en) * | 1995-01-25 | 1996-08-28 | 李勤章 | Planetary gearing mechanism compressor |
| CN101644242A (en) * | 2009-09-01 | 2010-02-10 | 北京创新通恒科技有限公司 | Large-flow plunger pump for preparing chromatograph in industry |
| CN102094777A (en) * | 2011-01-27 | 2011-06-15 | 北京清博华科技有限公司 | Plunger pump for preparing liquid chromatographic column |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779868A (en) * | 2019-02-12 | 2019-05-21 | 中国民航大学 | The star-like inner cavity pump of multi-cylinder |
| CN109779867A (en) * | 2019-02-12 | 2019-05-21 | 中国民航大学 | Tower lobe pump |
| CN114033645A (en) * | 2021-11-05 | 2022-02-11 | 中国民航大学 | Multi-stage reciprocating pump based on composite connecting rod |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108223324B (en) | 2020-01-10 |
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Application publication date: 20180629 Assignee: Tianjin water transport engineering survey and Design Institute Co.,Ltd. Assignor: CIVIL AVIATION University OF CHINA Contract record no.: X2024980004278 Denomination of invention: Space star double cam pump Granted publication date: 20200110 License type: Common License Record date: 20240412 |