CN108223324B - Space star-shaped double-cam pump - Google Patents
Space star-shaped double-cam pump Download PDFInfo
- Publication number
- CN108223324B CN108223324B CN201711485494.7A CN201711485494A CN108223324B CN 108223324 B CN108223324 B CN 108223324B CN 201711485494 A CN201711485494 A CN 201711485494A CN 108223324 B CN108223324 B CN 108223324B
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- bearing
- baffle
- cam
- fixed
- rod
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- 239000007788 liquid Substances 0.000 claims description 14
- 230000004888 barrier function Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 5
- 230000007246 mechanism Effects 0.000 abstract description 5
- 230000010349 pulsation Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
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- 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 space star-shaped double cam pump. The device comprises a base, an outer baffle, a bottom shaft supporting frame, a groove, a pre-tightening spring, an inner baffle, a thin rod, a piston rod, a hydraulic cylinder, a piston, a fixed rod, a top shaft supporting frame, a bearing through cover, a cam shaft, an upper bearing, a bearing roller, a cam, a lower bearing, a bearing end cover, an elastic retainer ring and a motor; the invention has the advantages that: the six hydraulic cylinders are arranged in an upper layer and a lower layer, and the four hydraulic cylinders at the front part and the two hydraulic cylinders at the rear part are different in size; the two cams are symmetrically arranged with a phase difference of 180 degrees, so that the whole pump is in a spatial multi-angle layout. The double cams are adopted to drive the feeding mechanism to do linear reciprocating motion, the structure is more compact, and the weight and the volume of the whole pump are reduced. The piston rod moves to have a specified phase angle, and the flow of the six hydraulic cylinders is overlapped to ensure that the output of the deicing fluid has small pressure pulsation. The double cam drives a plurality of piston rods to work simultaneously, so that the requirement of large-flow operation is easier to realize, and the working efficiency of the pump is greatly improved.
Description
Technical Field
The invention belongs to the technical field of special ground equipment for civil aviation, and particularly relates to a space star-shaped double-cam pump.
Background
When an aircraft is in flight or parked on the ground, the ice layer is often accumulated at certain parts of the aircraft due to freezing of water droplets or de-sublimation of water vapor. The ice layer not only increases the flight resistance of the airplane and reduces the flight lift force of the airplane, but also destroys the aerodynamic performance of the airplane and seriously affects the flight safety. Therefore, it is critical to perform a deicing process on an aircraft.
Currently, most reciprocating pumps used by deicing liquid supply systems are crank link mechanisms. The mechanism has the advantages of multiple transmission links, low use efficiency, large flow and pressure pulsation, impact and abrasion to the whole system in the liquid supply process, resonance of other mechanical parts, serious shortening of the service life of the whole machine and increase of the maintenance cost.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a space star type double cam pump.
In order to achieve the purpose, the space star-shaped double-cam pump provided by the invention comprises a base, an outer baffle, a bottom shaft supporting frame, a groove, a pre-tightening spring, an inner baffle, a thin rod, a piston rod, a hydraulic cylinder, a piston, a fixed rod, a top shaft supporting frame, a bearing through cover, a cam shaft, an upper bearing, a bearing roller, a cam, a lower bearing, a bearing end cover, an elastic retainer ring and a motor; wherein the base is a polygonal plate which is horizontally arranged; three outer baffles are vertically fixed on two sides of the surface of the base and the middle part of the rear end at intervals of 90 degrees, wherein two outer baffles on two sides are arranged in parallel, and the outer baffle in the middle part of the rear end is vertical to the outer baffles on two sides; the inner side of each outer baffle is respectively provided with an inner baffle which is arranged in parallel with the outer baffle and the lower end of which is fixed on the surface of the base; a hydraulic cylinder with two open ends is respectively arranged between each outer baffle and the upper part and the lower part of the corresponding inner baffle, and the upper end, the lower end and the two side parts of the outer baffle and the inner baffle are fixed by a plurality of horizontally arranged fixed rods; a liquid inlet and a liquid outlet are arranged at the positions of the outer baffle plates corresponding to the outer ends of the hydraulic cylinders; the bottom shaft support frame is a T-shaped plate, and three outer ends of the bottom shaft support frame are respectively fixed on the outer side surfaces of the lower ends of the three inner baffles; the middle part and the lower end of the outer side surface of each inner baffle are respectively connected with one end of a groove by using a screw, and a pre-tightening spring is arranged in each groove; the outer end of each horizontally arranged piston rod is connected with a piston arranged in one hydraulic cylinder by a screw; a bolt is arranged at the inner end of each piston rod along the radial direction, a bearing roller is arranged on the bolt, and the bolt is fixed by a washer and a nut; the lower end of each thin rod is inserted into one groove, the lower part of each thin rod is provided with a bolt along the radial direction, and the bolt is provided with a bearing roller and is fixed by a washer and a nut; the upper end of each thin rod penetrates through the middle of a piston rod positioned on the upper side of the thin rod and is fixed by a nut; the top shaft support frame is a T-shaped plate, and three outer ends of the top shaft support frame are respectively fixed on the outer side surfaces of the upper ends of the three inner baffles; an upper bearing and a lower bearing are respectively arranged in central holes formed in the middle parts of the top shaft support frame and the bottom shaft support frame, a bearing transparent cover is arranged on the part, positioned outside the central holes, on the surface of the top shaft support frame, and a plurality of screws are used for fastening; the upper end of the cam shaft penetrates through the central holes of the upper bearing and the bearing through cover in sequence and then is connected with an output shaft of the motor, and the lower end of the cam shaft is fixed in the central hole of the lower bearing and sealed by a bearing end cover arranged on the lower side of the lower bearing; the two cams which are horizontally arranged are respectively arranged on the upper outer circumferential surface and the lower outer circumferential surface of the camshaft through the matching of a key groove formed at the central hole and a flat key, and are positioned and fixed by utilizing a shaft shoulder and an elastic retainer ring on the camshaft; the edge of each cam is simultaneously tangent to three bearing rollers which are positioned on the upper part or the lower part of the inner baffle and are arranged on the inner end of the piston rod.
The four hydraulic cylinders positioned at the front part of the six hydraulic cylinders are different from the two hydraulic cylinders positioned at the rear part in size.
The two cams are symmetrically arranged in a 180-degree phase difference mode, and the tracks of the cams are designed according to the phase angle of each piston rod and the size of the hydraulic cylinder.
The outer edge of the bearing roller arranged at the lower part of the slender rod is contacted with one side of the top surface of the groove.
The space star-shaped double-cam pump provided by the invention has the following advantages:
1. the double cams are adopted to respectively drive the plurality of feeding mechanisms to supply liquid, and compared with the traditional connecting rod mechanism, the double-cam liquid supply pump is more compact in structure, and the weight and the size of the whole pump are reduced.
2. The six hydraulic cylinders are arranged in an upper layer and a lower layer, and the four hydraulic cylinders at the front part and the two hydraulic cylinders at the rear part are different in size; the two cams are symmetrically arranged with a phase difference of 180 degrees, so that the whole pump is in a spatial multi-angle layout. The piston rod moves to have a specified phase angle, and the flow of the six hydraulic cylinders is overlapped to ensure that the output of the deicing fluid has small pressure pulsation.
3. The double cam drives a plurality of piston rods to work simultaneously, so that the requirement of large-flow operation is easier to realize, and the working efficiency of the pump is greatly improved.
4. The sizes of the used cam, the support frame, the baffle, the piston rod, the thin rod, the hydraulic cylinder and the piston are basically the same, so that the processing and the manufacturing are simple.
Drawings
Fig. 1 is a perspective view of a spatial star-shaped dual-cam pump structure provided by the invention.
Fig. 2 is a sectional view taken along line a-a in fig. 4.
Fig. 3 is a sectional view taken along line B-B in fig. 4.
Fig. 4 is a top view of the spatial star dual cam pump structure provided by the present invention.
Detailed Description
The space star twin-lobe pump provided by the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-4, the space star-shaped dual-cam pump provided by the invention comprises a base 1, an outer baffle 2, a bottom shaft support frame 3, a groove 4, a pre-tightening spring 5, an inner baffle 6, a thin rod 7, a piston rod 8, a hydraulic cylinder 9, a piston 10, a fixing rod 13, a top shaft support frame 15, a bearing transparent cover 16, a cam shaft 17, an upper bearing 18, a bearing roller 22, a cam 28, a lower bearing 29, a bearing end cover 30, an elastic retainer ring 34 and a motor 36; wherein the base 1 is a polygonal plate arranged horizontally; three outer baffles 2 are vertically fixed on two sides of the surface of the base 1 and the middle part of the rear end at intervals of 90 degrees, wherein the two outer baffles 2 on the two sides are arranged in parallel, and the outer baffle 2 in the middle part of the rear end is vertical to the outer baffles 2 on the two sides; the inner side of each outer baffle 2 is respectively provided with an inner baffle 6 which is arranged in parallel with the outer baffle 2 and the lower end of which is fixed on the surface of the base 1; a hydraulic cylinder 9 with two open ends is respectively arranged between each outer baffle 2 and the upper part and the lower part of the corresponding inner baffle 6, and the upper end, the lower end and the two side parts of the outer baffle 2 and the inner baffle 6 are fixed by a plurality of horizontally arranged fixing rods 13; a liquid inlet and a liquid outlet are arranged at the positions, corresponding to the outer ends of the hydraulic cylinders 9, on the outer baffle plates 2; the bottom shaft support frame 3 is a T-shaped plate, and the three outer ends are respectively fixed on the outer side surfaces of the lower ends of the three inner baffles 6; the middle part and the lower end of the outer side surface of each inner baffle 6 are respectively connected with one end of one groove 4 by using a screw 31, and a pre-tightening spring 5 is arranged in each groove 4; the outer end of each horizontally arranged piston rod 8 is connected with a piston 10 arranged in a hydraulic cylinder 9 by a screw 11; a bolt 20 is arranged at the inner end of each piston rod 8 along the radial direction, a bearing roller 22 is arranged on the bolt 20 and is fixed by a washer 21 and a nut 23; the lower end of each thin rod 7 is inserted into one groove 4, the lower part is provided with a bolt along the radial direction, and the bolt is provided with a bearing roller 22 and is fixed by a washer and a nut; the upper end of each thin rod 7 penetrates through the middle of a piston rod 8 positioned on the upper side of the thin rod and is fixed by a nut 12; the top shaft support frame 15 is a T-shaped plate, and the three outer ends are respectively fixed on the outer side surfaces of the upper ends of the three inner baffles 6; an upper bearing 18 and a lower bearing 29 are respectively arranged in central holes formed in the middle parts of the top shaft support frame 15 and the bottom shaft support frame 3, a bearing transparent cover 16 is arranged on the surface of the top shaft support frame 15 and positioned outside the central holes, and the bearing transparent cover is fastened by a plurality of screws 19; the upper end of the camshaft 17 penetrates through the central holes of the upper bearing 18 and the bearing transparent cover 16 in sequence and then is connected with the output shaft of the motor 36, and the lower end of the camshaft is fixed in the central hole of the lower bearing 29 and sealed by a bearing end cover 30 arranged at the lower side of the lower bearing 29; the two horizontally placed cams 28 are respectively installed on the upper and lower outer circumferential surfaces of the camshaft 17 through the matching of a key groove formed at the central hole thereof and a flat key 35, and are positioned and fixed by using a shoulder and an elastic retainer ring 34 on the camshaft 17; the edge of each cam 28 is simultaneously tangent to three bearing rollers 22 located on or below the inner barrier 6 and mounted on the inner end of the piston rod 8.
The four hydraulic cylinders 9 positioned at the front part of the six hydraulic cylinders are different from the two hydraulic cylinders 9 positioned at the rear part in size.
The two cams 28 are symmetrically arranged with a phase difference of 180 degrees, and the tracks of the cams 28 are designed according to the phase angle of each piston rod 8 and the size of the hydraulic cylinder 9, so that the pump has small flow and pressure pulsation when supplying liquid.
The outer edge of the bearing roller 22 installed at the lower portion of the thin rod 7 is in contact with the top surface side of the groove 4.
The working principle of the space star-shaped double-cam pump provided by the invention is explained as follows: when the pump needs to be used for supplying deicing fluid, the motor 36 is started firstly, the motor 36 is used for driving the cam shaft 17 to rotate, the two cams 28 positioned at the upper part and the lower part of the cam shaft 17 also rotate along with the cam shaft 17, so that the bearing rollers 22 fixed on the piston rod 8 are driven to move, the bearing rollers 22 drive the piston rod 8 and the thin rod 7 to perform feeding motion through the bolts 20, and the pre-tightening springs 5 positioned in the grooves 4 can play a resetting role on the thin rod 7 and the piston rod 8, so that the pistons 10 positioned in the hydraulic cylinders 9 can perform reciprocating motion, the deicing fluid entering the hydraulic cylinders 9 through the liquid inlets is compressed, and finally the deicing fluid is discharged through the liquid outlets. Because the whole structure is arranged in a space star-shaped multi-angle symmetrical mode, the two cams 28 drive the six piston rods 8 simultaneously, and each piston rod 8 has a specified phase angle, so that the flow rate and pressure pulsation of the pump are small when the pump supplies liquid.
Claims (4)
1. A space star double cam pump is characterized in that: the space star-shaped double-cam pump comprises a base (1), an outer baffle (2), a bottom shaft supporting frame (3), a groove (4), a pre-tightening spring (5), an inner baffle (6), a thin rod (7), a piston rod (8), a hydraulic cylinder (9), a piston (10), a fixing rod (13), a top shaft supporting frame (15), a bearing transparent cover (16), a cam shaft (17), an upper bearing (18), a bearing roller (22), a cam (28), a lower bearing (29), a bearing end cover (30), an elastic retainer ring (34) and a motor (36); wherein the base (1) is a polygonal plate which is horizontally arranged; the three outer baffles (2) are vertically fixed on two sides of the surface of the base (1) and the middle part of the rear end at intervals of 90 degrees, wherein the two outer baffles (2) on the two sides are arranged in parallel, and the outer baffle (2) in the middle part of the rear end is vertical to the outer baffles (2) on the two sides; the inner side of each outer baffle (2) is respectively provided with an inner baffle (6) which is arranged in parallel with the outer baffle (2) and the lower end of which is fixed on the surface of the base (1); a hydraulic cylinder (9) with two open ends is respectively arranged between each outer baffle (2) and the upper part and the lower part of the corresponding inner baffle (6), and the upper end, the lower end and the two side parts of the outer baffle (2) and the inner baffle (6) are fixed by a plurality of horizontally arranged fixing rods (13); a liquid inlet and a liquid outlet are arranged at the part of the outer baffle (2) corresponding to the outer end of the hydraulic cylinder (9); the bottom shaft support frame (3) is a T-shaped plate, and the three outer ends are respectively fixed on the outer side surfaces of the lower ends of the three inner baffles (6); the middle part and the lower end of the outer side surface of each inner baffle (6) are respectively connected with one end of one groove (4) by using a screw (31), and a pre-tightening spring (5) is arranged in each groove (4); the outer end of each horizontally arranged piston rod (8) is connected with a piston (10) arranged in a hydraulic cylinder (9) by a screw (11); a bolt (20) is arranged at the inner end of each piston rod (8) along the radial direction, a bearing roller (22) is arranged on the bolt (20), and a washer (21) and a nut (23) are used for fixing; the lower end of each slender rod (7) is inserted into one groove (4), the lower part of each slender rod is provided with a bolt along the radial direction, and the bolt is provided with a bearing roller (22) and is fixed by a washer and a nut; the upper end of each thin rod (7) penetrates through the middle of a piston rod (8) positioned on the upper side of the thin rod and is fixed by a nut (12); the top shaft support frame (15) is a T-shaped plate, and the three outer ends are respectively fixed on the outer side surfaces of the upper ends of the three inner baffles (6); an upper bearing (18) and a lower bearing (29) are respectively arranged in central holes formed in the middle parts of the top shaft support frame (15) and the bottom shaft support frame (3), a bearing transparent cover (16) is arranged on the surface of the top shaft support frame (15) and positioned outside the central holes, and a plurality of screws (19) are used for fastening; the upper end of the camshaft (17) penetrates through the central holes of the upper bearing (18) and the bearing transparent cover (16) in sequence and then is connected with the output shaft of the motor (36), and the lower end of the camshaft is fixed in the central hole of the lower bearing (29) and sealed by using a bearing end cover (30) arranged on the lower side of the lower bearing (29); two cams (28) which are horizontally arranged are respectively arranged on the outer circumferential surfaces of the upper part and the lower part of the camshaft (17) through the matching of a key slot formed at the central hole and a flat key (35), and are positioned and fixed by utilizing a shaft shoulder and an elastic retainer ring (34) on the camshaft (17); the edge of each cam (28) is simultaneously tangent to three bearing rollers (22) located on or below the inner barrier (6) and mounted on the inner end of the piston rod (8).
2. The spatial star twin lobe pump of claim 1, wherein: the sizes of the four hydraulic cylinders (9) positioned at the front part and the two hydraulic cylinders (9) positioned at the rear part in the six hydraulic cylinders are different.
3. The spatial star twin lobe pump of claim 1, wherein: the two cams (28) are symmetrically arranged with a phase difference of 180 degrees, and the track of the cams (28) is designed according to the phase angle of each piston rod 8 and the size of the hydraulic cylinder (9).
4. The spatial star twin lobe pump of claim 1, wherein: the outer edge of the bearing roller (22) arranged at the lower part of the thin rod (7) is contacted with one side of the top surface of the 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 CN108223324A (en) | 2018-06-29 |
| CN108223324B true CN108223324B (en) | 2020-01-10 |
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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) |
Families Citing this family (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 |
Family Cites Families (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 |
| DE3003590C2 (en) * | 1980-02-01 | 1986-06-26 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | High pressure 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 |
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2017
- 2017-12-29 CN CN201711485494.7A patent/CN108223324B/en active Active
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| CN108223324A (en) | 2018-06-29 |
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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 |