CN107725305B - A kind of plunger pump of Piezoelectric Driving - Google Patents
A kind of plunger pump of Piezoelectric Driving Download PDFInfo
- Publication number
- CN107725305B CN107725305B CN201710880851.3A CN201710880851A CN107725305B CN 107725305 B CN107725305 B CN 107725305B CN 201710880851 A CN201710880851 A CN 201710880851A CN 107725305 B CN107725305 B CN 107725305B
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- Prior art keywords
- plunger
- disk
- steel ball
- rear side
- top pillar
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000005096 rolling process Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 abstract description 23
- 230000006978 adaptation Effects 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/003—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by piezoelectric means
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention discloses a kind of plunger pump of Piezoelectric Driving, including shell, the end cap that is sealed on shell rear and front end, it is set in the housing and is connected with the plunger of plunger rod, the inlet on shell and liquid outlet, further includes the piezoelectric vibration piece being set in the housing and elastic-friction piece, the front limit mechanism on front side of plunger, the rear position-limit mechanism on rear side of plunger, the front side steel ball being entrenched between front limit mechanism and plunger, the rear side steel ball being entrenched between rear position-limit mechanism and plunger.The plunger pump has many advantages, such as that structure is simple, small-size light-weight, fast response time, noise is low, cuts off self-lock, positioning accuracy is high, inaccurate by magnetic interference, movement, and the adaptation space environment such as also have the characteristics that low temperature resistant, vacuum.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, and in particular to a kind of plunger pump of Piezoelectric Driving.
Background technique
Plunger pump is the critical component of hydraulic system, it is moved back and forth in cylinder body by plunger, makes seal operation cavity
Volume change to realize oil suction, pressure oil.With rated pressure, high, compact-sized, high-efficient and flow is adjusted plunger pump
The advantages that facilitating is widely used in the occasion that high pressure, big flow and flow need to adjust, such as hydraulic press, engineering machinery, ship
In the hydraulic system of oceangoing ship, space flight and aviation dynamical system, space station, underwater work system etc..
Traditional plunger pump exists usually using motor driven and is easy to be answered in the environment such as low temperature, vacuum by electromagnetic interference
With limited situation, and there are the distributing construction of plunger pump complexity, the problems such as power density is not high enough.
Summary of the invention
Technical problem solved by the invention is for deficiency existing for traditional plunger pump, and it is simple to provide a kind of structure, loud
Answer speed fast, noise is low, and positioning accuracy is high, and movement is accurate, and not by the plunger pump of the Piezoelectric Driving of magnetic interference.
The technical scheme adopted by the invention is that: a kind of plunger pump of Piezoelectric Driving, including shell, be sealed on shell before and after
The end cap at both ends is set in the housing and is connected with the plunger of plunger rod, the inlet on shell and liquid outlet, further includes setting
In the intracorporal piezoelectric vibration piece of shell and elastic-friction piece, the front limit mechanism on front side of plunger, the rear limit on rear side of plunger
Position mechanism, the front side steel ball being entrenched between front limit mechanism and plunger, the rear side being entrenched between rear position-limit mechanism and plunger
Steel ball；The piezoelectric vibration piece is of coupled connections with elastic-friction piece, and elastic-friction piece passes through keyway, the plunger rod of needle roller and plunger
It is connected；The peripheral wall of the plunger is equipped with several oil-distribution ports.
The front limit mechanism includes front limit disk, and the rear position-limit mechanism includes rear position-arresting disk；Front limit disk court
It is equipped with the loop curve slot suitable for front side steel ball rolling to the disk of plunger, the disk of rear position-arresting disk towards plunger is equipped with suitable
In the loop curve slot of rear side steel ball rolling；The front end of the plunger is connected with several loop curve slot phases with front limit disk
The front side top pillar of adaptation, front side top pillar are equipped with the ball groove of holding steel ball towards the end face of front limit disk；The rear end of plunger connects
There are several rear side top pillars compatible with the loop curve slot of rear position-arresting disk, rear side top pillar is towards setting on the end face of rear position-arresting disk
There is the ball groove of steel ball on rear side of holding；The front side steel ball be entrenched in front limit disk loop curve slot and front side top pillar ball groove it
Between, rear side steel ball is entrenched between the loop curve slot of rear position-arresting disk and the ball groove of rear side top pillar.
The shell is equipped with annular collecting tank, liquid collecting tank cover plate, annular liquid separation slot, liquid separation tank cover plate.
The front side top pillar and rear side top pillar and rear side top pillar are preferably respectively 3.
Oil-distribution port on the plunger peripheral wall is preferably 3~6.
The working principle of the invention: piezoelectric vibration piece is depressed in high-frequency alternating current, using inverse piezoelectric effect, in piezoelectricity frequency range
Generate micromechanical vibration, and by this vibration by resonance amplification and friction coupling transform at elastic-friction piece rotary motion,
Elastic-friction piece drives plunger to rotate, and the junction of elastic-friction piece and plunger rod adds the form of needle roller using keyway, can be by cunning
Dynamic friction is changed into rolling friction, substantially reduces frictional resistance；Simultaneously as plunger front and rear sides be designed with position-arresting disk and
Loop curve slot is designed on position-arresting disk, and the rear and front end of plunger is all connected on top pillar and top pillar and is designed with ball groove, front side
Steel ball is entrenched between the loop curve slot of front limit disk and the ball groove of front side top pillar, and rear side steel ball is entrenched in the ring of rear position-arresting disk
Between shape curved groove and the ball groove of rear side top pillar, under the collective effect of front and rear sides position-arresting disk and steel ball, sliding can be rubbed
Wiping is changed into rolling friction, and plunger is forced to do linear reciprocating motion while rotary motion, realizes the linear reciprocation of plunger
Move and rotate in a circumferential direction compound (two freedom of motion of the rotation of plunger and sliding) of movement, and plunger straight reciprocating motion makes to pump
Cavity generating period variation, plunger rotate in a circumferential direction movement generate flow effect.In this way, transmission medium is inhaled from inlet
Enter, extruded by liquid outlet, to realize fluid conveying function.
The beneficial effects of the present invention are: 1, plunger pump of the present invention uses Piezoelectric Driving, compared with conventional motors driving,
There is no electromagnetism winding and magnetic circuit, carrys out transfer capability without electromagnetic interaction, but using inverse piezoelectric effect, piezoelectric vibration and rub
Coupling is wiped to convert energy, have structure is simple, small-size light-weight, fast response time, noise is low, cut off self-lock, positioning accuracy is high,
Not by magnetic interference, movement is accurate the advantages that, and the adaptation space environment such as also have the characteristics that low temperature resistant, vacuum；2, of the invention
The plunger pump does not need additional gear iso-variable velocity structure, avoid the vibration generated using gear shift, impact and noise,
A series of problems, such as inefficient, difficult to control, and position positioning accuracy is very high, straight line resolution ratio rotates resolution ratio up to nanoscale
Up to rad grade；3, the present invention passes through setting piezoelectric vibration piece, elastic-friction piece, plunger, front limit disk, rear position-arresting disk, front side
The devices such as steel ball, rear side steel ball, and loop curve slot is designed on former and later two position-arresting disks, and the rear and front end of plunger all connects
Have and be designed with ball groove on top pillar and top pillar, front side steel ball be entrenched in front limit disk loop curve slot and front side top pillar ball groove it
Between, rear side steel ball is entrenched between the loop curve slot of rear position-arresting disk and the ball groove of rear side top pillar, in front and rear sides position-arresting disk and
Under the collective effect of steel ball, sliding friction can be changed into rolling friction, and plunger be forced to do while rotary motion it is past
Linear motion, realizes the compound of the straight reciprocating motion of plunger and the movement that rotates in a circumferential direction, and plunger straight reciprocating motion makes pump
The movement that rotates in a circumferential direction of the variation of cavity generating period, plunger generates flow effect, so that imbibition and hydraulic fluid movement are completed, it is real
Existing fluid conveying function；4, driving medium is separated with lubricant medium in plunger pump of the present invention, is applicable not only to oil medium,
It is applicable in fresh water and Seawater, the scope of application greatly increases；5, plunger pump of the present invention is by plunger, transmission mechanism and flow machine
Structure becomes one, and reduces transmission series, greatly improves biography effect rate, also reduces the number of components, improve pass
The stress and operating condition of key components require component weight harsh field suitable for aerospace, space station.
Detailed description of the invention
Fig. 1 is the top view cross section structural schematic diagram of the plunger pump of Piezoelectric Driving.
Fig. 2 is that the plunger pump of Piezoelectric Driving faces the schematic diagram of the section structure.
Fig. 3 is the structural schematic diagram of plunger, steel ball, position-arresting disk in the plunger pump of Piezoelectric Driving.
Fig. 4 is the structural schematic diagram of position-arresting disk in the plunger pump of Piezoelectric Driving.
Description of symbols: 1- drive end bearing bracket；2- piezoelectric vibration piece；3- elastic-friction piece；4- needle roller；Top on front side of 5-
Column；6- front limit disk；7- shell；8- plunger；9- plunger rod；10- rear end cap；Top pillar on rear side of 11-；It is limited after 12-
Disk；13- annular collecting tank；14- liquid collecting tank cover plate；15- annular liquid separation slot；16- liquid separation tank cover plate；17- power supply line；
Steel ball on front side of 18-；19- inlet；20- liquid outlet；21- oil-distribution port；22- cavity；Steel ball on rear side of 23-；24- ring
Shape curved groove.
Specific embodiment
The present invention will be further described with specific embodiment with reference to the accompanying drawing.
A kind of plunger pump of Piezoelectric Driving as shown in Figure 1, Figure 2, Figure 3, Figure 4, including shell 7, is sealed on 7 front end of shell
Drive end bearing bracket 1, be sealed on 7 rear end of shell rear end cap 10, in shell 7 and be connected with plunger rod 9 plunger 8, be set to shell
Inlet 19 and liquid outlet 20 on body 7 further include piezoelectric vibration piece 2 and elastic-friction piece 3, Yi Jishe in shell 7
Front limit mechanism in 8 front side of plunger, is entrenched between front limit mechanism and plunger 8 the rear position-limit mechanism set on 8 rear side of plunger
Front side steel ball 18, the rear side steel ball 23 that is entrenched between rear position-limit mechanism and plunger 8.The piezoelectric vibration piece 2 rubs with elasticity
Pad 3 is of coupled connections, and elastic-friction piece 3 is connected by keyway, needle roller 4 with the plunger rod 9 of plunger 8.The peripheral wall of the plunger 8
It is equipped with 4 oil-distribution ports 21.
The front limit mechanism includes front limit disk 6, and the rear position-limit mechanism includes rear position-arresting disk 12.6 court of front limit disk
The loop curve slot 24 for being suitable for front side steel ball 18 and rolling, disk of the rear position-arresting disk 12 towards plunger 8 are equipped with to the disk of plunger 8
On also be provided be suitable for rear side steel ball 23 roll loop curve slot.The loop curve slot 24 of front limit disk 6 and rear position-arresting disk 12
Loop curve slot is synchronous slot.There are three before compatible with the loop curve slot of front limit disk 6 for the front end connection of the plunger 8
Side top pillar 5, front side top pillar 5 are equipped with the ball groove of steel ball 18 on front side of holding towards the end face of front limit disk 6；The rear end of plunger 8 connects
It connects there are three rear side top pillar 11 compatible with the loop curve slot of rear position-arresting disk 12, rear side top pillar 11 is towards rear position-arresting disk 12
The ball groove of steel ball 23 on rear side of holding also is provided on end face.The front side steel ball 18 be entrenched in the loop curve slot of front limit disk 6 with
Between the ball groove of front side top pillar 5, the rear side steel ball 23 is entrenched in the loop curve slot and rear side top pillar 11 of rear position-arresting disk 12
Between ball groove.Annular collecting tank 13, liquid collecting tank cover plate 14, annular liquid separation slot 15, liquid separation tank cover plate are additionally provided on the shell 7
16.The piezoelectric vibration piece 2 is connected with power supply line 17.
The working principle of the invention: piezoelectric vibration piece 2 is depressed in high-frequency alternating current, using inverse piezoelectric effect, in piezoelectricity frequency
Section generates micromechanical vibration, and this vibration is rotated by resonance amplification and friction coupling transform at elastic-friction piece 3 and is transported
Dynamic, elastic-friction piece 3 drives plunger 8 to rotate, and the junction of elastic-friction piece 3 and plunger rod 9 adds the shape of needle roller 4 using keyway
Sliding friction can be changed into rolling friction, substantially reduce frictional resistance by formula.Simultaneously as the front and rear sides of plunger 8 all
Equipped with being designed with loop curve slot on position-arresting disk and two position-arresting disks, and the rear and front end of plunger 8 is all connected with top pillar and top pillar
On be designed with ball groove, front side steel ball 18 is entrenched between the loop curve slot of front limit disk 6 and the ball groove of front side top pillar 5, rear side
Steel ball 23 is entrenched between the loop curve slot of rear position-arresting disk 12 and the ball groove of rear side top pillar 11, position-arresting disk and steel in front and rear sides
Under the collective effect of ball, sliding friction can be changed into rolling friction, and plunger 8 is forced to do back and forth while rotary motion
Linear motion, realize plunger 8 straight reciprocating motion and the movement that rotates in a circumferential direction it is compound, 8 linear reciprocating motion of plunger make pump
The movement that rotates in a circumferential direction of the variation of 22 generating period of cavity, plunger 8 generates flow effect.In this way, transmission medium is from inlet
19 suckings, are extruded by liquid outlet 20, to realize fluid conveying function.
Above-described embodiment is only a specific embodiment of the invention, but the design concept of the present invention is not limited to this, all
The change for carrying out unsubstantiality is conceived using this, is within the scope of protection of the invention.
Claims (4)
1. a kind of plunger pump of Piezoelectric Driving, including shell, the end cap that is sealed on shell rear and front end, it is set in the housing and connects
There are the plunger of plunger rod, the inlet on shell and liquid outlet, it is characterised in that: further include the piezoelectricity vibration being set in the housing
Movable plate and elastic-friction piece, the rear position-limit mechanism on rear side of plunger, are entrenched in preceding limit at the front limit mechanism on front side of plunger
Front side steel ball, the rear side steel ball that is entrenched between rear position-limit mechanism and plunger between position mechanism and plunger；The piezoelectric vibration
Piece is of coupled connections with elastic-friction piece, and elastic-friction piece is connected by keyway, needle roller with the plunger rod of plunger；The plunger
Peripheral wall is equipped with several oil-distribution ports；The front limit mechanism includes front limit disk, and the rear position-limit mechanism limits after including
Disk；The disk of the front limit disk towards plunger is equipped with the loop curve slot suitable for front side steel ball rolling, rear position-arresting disk direction
The disk of plunger is equipped with the loop curve slot suitable for rear side steel ball rolling；The front end of the plunger is connected with several and preceding limit
The compatible front side top pillar of loop curve slot of position disk, front side top pillar are equipped with the ball of holding steel ball towards the end face of front limit disk
Slot；The rear end of plunger is connected with several rear side top pillars compatible with the loop curve slot of rear position-arresting disk, rear side top pillar direction
The end face of position-arresting disk is equipped with the ball groove of steel ball on rear side of holding afterwards；The front side steel ball is entrenched in the loop curve slot of front limit disk
Between the ball groove of front side top pillar, rear side steel ball is entrenched between the loop curve slot of rear position-arresting disk and the ball groove of rear side top pillar.
2. the plunger pump of Piezoelectric Driving according to claim 1, it is characterised in that: the front side top pillar and rear side top pillar difference
It is 3.
3. the plunger pump of Piezoelectric Driving according to claim 1, it is characterised in that: the shell be equipped with annular collecting tank,
Liquid collecting tank cover plate, annular liquid separation slot, liquid separation tank cover plate.
4. the plunger pump of Piezoelectric Driving according to claim 1, it is characterised in that: the oil-distribution port on the plunger peripheral wall is
3~6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710880851.3A CN107725305B (en) | 2017-09-26 | 2017-09-26 | A kind of plunger pump of Piezoelectric Driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710880851.3A CN107725305B (en) | 2017-09-26 | 2017-09-26 | A kind of plunger pump of Piezoelectric Driving |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107725305A CN107725305A (en) | 2018-02-23 |
| CN107725305B true CN107725305B (en) | 2018-12-25 |
Family
ID=61208031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710880851.3A Active CN107725305B (en) | 2017-09-26 | 2017-09-26 | A kind of plunger pump of Piezoelectric Driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725305B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847650A (en) * | 2005-10-11 | 2006-10-18 | 兰州理工大学 | Linear motor plunger pump |
| JP4840288B2 (en) * | 2006-11-14 | 2011-12-21 | 株式会社デンソー | Fuel injection apparatus and adjustment method thereof |
| CN203627121U (en) * | 2013-12-31 | 2014-06-04 | 大连海事大学 | Reciprocated plunger pump driven by plunger assignment double-acting linear motor |
| CN203879700U (en) * | 2014-05-20 | 2014-10-15 | 西安交通大学 | End face cam type micro-flow plunger pump driven by stepping motor |
| TWI557321B (en) * | 2015-06-25 | 2016-11-11 | 科際精密股份有限公司 | Piezoelectric pump and operating method thereof |
| CN106014907B (en) * | 2016-06-15 | 2018-02-02 | 浙江师范大学 | A kind of plunger pump of piezoelectric chip oscillator driving |
-
2017
- 2017-09-26 CN CN201710880851.3A patent/CN107725305B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107725305A (en) | 2018-02-23 |
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Address after: 365000 Jinsha garden, Sanming hi tech Industrial Development Zone, Sanming City, Fujian, Shaxian County Applicant after: Hercynian (Fujian) branch Co., Ltd., General Institute of Mechanical Science Applicant after: CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY (JIANGLE) SEMI SOLID TECHNOLOGY INSTITUTE CO., LTD. Address before: 365050 Jinsha garden, Sanming high tech Industrial Development Zone, Shaxian County, Sanming City, Fujian Applicant before: HAIXI INSTITUTE, CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY Applicant before: CHINA ACADEMY OF MACHINERY SCIENCE & TECHNOLOGY (JIANGLE) SEMI SOLID TECHNOLOGY INSTITUTE CO., LTD. |
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