CN112196756B - Piezoelectric stack double-plunger pump capable of amplifying swing - Google Patents
Piezoelectric stack double-plunger pump capable of amplifying swing Download PDFInfo
- Publication number
- CN112196756B CN112196756B CN202011066950.6A CN202011066950A CN112196756B CN 112196756 B CN112196756 B CN 112196756B CN 202011066950 A CN202011066950 A CN 202011066950A CN 112196756 B CN112196756 B CN 112196756B
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- Prior art keywords
- swing
- piezoelectric stack
- plunger
- piston
- amplification
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- 230000003321 amplification Effects 0.000 claims abstract description 28
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000003534 oscillatory effect Effects 0.000 claims 5
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000014509 gene expression Effects 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
- 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
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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
- 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
-
- 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
- F04B53/10—Valves; Arrangement of valves
-
- 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
Abstract
The invention discloses a piezoelectric stack double-plunger pump capable of amplifying swing. The piezoelectric stack pump body is provided with two swing amplifying mechanisms which are symmetrically arranged. The piezoelectric stack is fixed on the shell in the cavity through a pre-tightening bolt and is in contact with the piston 1; a hydraulic cavity is arranged in the cavity body and is used for carrying out primary amplification on the displacement of the piezoelectric stack; the piston 2 drives the two swing rods to act for secondary amplification; the oscillating bar drives the plunger to move to change the volume of the liquid cavity. The piezoelectric stack double-plunger pump for amplifying swing has an obvious amplification effect. The pumping flow rate is greatly improved.
Description
Technical Field
The invention relates to a piezoelectric stack double-plunger pump capable of amplifying swing, and belongs to the field of fluid machinery.
Background
The piezoelectric stack pump has the advantages of simple structure, small volume, no electromagnetic interference, good flow and pressure controllability and the like, is well noticed by people, and is widely applied to various fields in recent years along with the deep research on the piezoelectric stack pump.
Disclosure of Invention
The invention mainly aims to provide a piezoelectric stack double-plunger pump capable of amplifying swing.
The technical scheme of the invention is as follows: a piezoelectric stack double-plunger pump for swing amplification mainly comprises a pump body (1), a lower pump cover (2), a piezoelectric stack (3), a piston 1(4), a hydraulic cavity (5), a piston 2(6), a swing rod 1(7), a swing rod 2(8), a threaded screw rod (9), a support frame (10), a plunger 1(11), a plunger 2(12), a cylindrical screw rod (13), an inlet valve (14), an outlet valve (15), a pre-tightening bolt (16) and a spring (17).
A piezoelectric stack double-plunger pump with swing amplification mainly comprises a pump body (1), a lower pump cover (2), a piezoelectric stack (3), a piston (1) (4), a hydraulic cavity (5), a piston (2) (6), a swing rod (1) (7), a swing rod (2) (8), a threaded screw (9), a support frame (10), a plunger (1) (11), a plunger (2) (12), a cylindrical screw (13), an inlet valve (14), an outlet valve (15), a pre-tightening bolt (16) and a spring (17); a liquid inlet 1(1-1), a liquid inlet 2(1-2) and a liquid outlet 1(1-3) are formed in two sides of the pump body (1), and an inlet valve (14) and an outlet valve (15) are installed in the liquid outlet 2 (1-4); the lower pump cover (2) is arranged at the bottom of the pump through bonding; the piezoelectric stack (3) is fixed at the top in the upper pump body (1) through a pretightening bolt (16); the upper part of the piston 1(11) is contacted with the piezoelectric stack (3), and the lower part drives hydraulic oil in the hydraulic cavity (5) to achieve the effect of primary amplification; the left and the right of the piston 2(12) are provided with grooves for installing the swing rods 1(17) and 2 (8); the support frame is fixed in a groove (1-5) of the pump body (1); the swing rods 1(7) and 2(8) are connected with a support frame (10) through threaded screws (9) to form lever type swing amplification; the plunger 1(11) and the plunger 2(12) are respectively connected with the oscillating bar 1(7) and the oscillating bar 2(8) through a cylindrical screw rod (13); the spring (17) is arranged between the support frame (10) and the piston 2(6) and is used for the action of the swing amplifying mechanism when the piezoelectric stack (3) contracts.
As a further improvement of the above scheme: the piezoelectric stack (3) is in contact with the piston 1 (4).
The invention has the beneficial effects that
The swing amplification mechanism is arranged in a bilateral symmetry mode, and two plungers can be driven to act by one action.
The invention achieves the effect of secondary amplification through the hydraulic cavity and the swing amplification mechanism, and the amplification effect is obvious. The pumping flow rate increases significantly.
Drawings
Fig. 1 is a schematic diagram of the whole mechanism of a piezoelectric stack double-plunger pump with amplified swing.
Fig. 2 is a structural view of a swing amplifying mechanism.
Fig. 3 is a view showing the structure of the piston 1.
Fig. 4 is a view showing the structure of the piston 2.
Fig. 5 is a structure diagram of the swing link.
Fig. 6 is a view showing the structure of the plunger.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
Referring to fig. 1 and 2, in the embodiment of the present invention, the specific structure is as follows:
a piezoelectric stack double-plunger pump for swing amplification mainly comprises a pump body (1), a lower pump cover (2), a piezoelectric stack (3), a piston 1(4), a hydraulic cavity (5), a piston 2(6), a swing rod 1(7), a swing rod 2(8), a threaded screw rod (9), a support frame (10), a plunger 1(11), a plunger 2(12), a cylindrical screw rod (13), an inlet valve (14), an outlet valve (15), a pre-tightening bolt (16) and a spring (17).
A piezoelectric stack double-plunger pump with swing amplification mainly comprises a pump body (1), a lower pump cover (2), a piezoelectric stack (3), a piston (1) (4), a hydraulic cavity (5), a piston (2) (6), a swing rod (1) (7), a swing rod (2) (8), a threaded screw (9), a support frame (10), a plunger (1) (11), a plunger (2) (12), a cylindrical screw (13), an inlet valve (14), an outlet valve (15), a pre-tightening bolt (16) and a spring (17); a liquid inlet 1(1-1), a liquid inlet 2(1-2) and a liquid outlet 1(1-3) are formed in two sides of the pump body (1), and an inlet valve (14) and an outlet valve (15) are installed in the liquid outlet 2 (1-4); the lower pump cover (2) is arranged at the bottom of the pump through bonding; the piezoelectric stack (3) is fixed at the top in the upper pump body (1) through a pretightening bolt (16); the upper part of the piston 1(11) is contacted with the piezoelectric stack (3), and the lower part drives hydraulic oil in the hydraulic cavity (5) to achieve the effect of primary amplification; the left and the right of the piston 2(12) are provided with grooves for installing the swing rods 1(17) and 2 (8); the support frame is fixed in a groove (1-5) of the pump body (1); the swing rods 1(7) and 2(8) are connected with a support frame (10) through threaded screws (9) to form lever type swing amplification; the plunger 1(11) and the plunger 2(12) are respectively connected with the oscillating bar 1(7) and the oscillating bar 2(8) through a cylindrical screw rod (13); the spring (17) is arranged between the support frame (10) and the piston 2(6) and is used for the action of the swing amplifying mechanism when the piezoelectric stack (3) contracts.
As a further improvement of the above scheme: the piezoelectric stack (3) is in contact with the piston 1 (4).
The working process of the invention can be divided into a first working process and a second working process
The first working process comprises the following steps: an alternating signal is applied to the piezoelectric stack (3), the piezoelectric stack (3) is extended, the piston 1(4) is driven to move downwards, the piston 2(6) is driven to move downwards through the amplification of the hydraulic cavity (5), and then the swing rod 1(7) and the swing rod 2(8) are driven to swing for secondary amplification. The oscillating bar drives the plungers 1(11) and 2(12) to move. The outlet valve (15) is now open and the inlet valve (14) closes the liquid outflow.
The second working process: the piezoelectric stack (3) contracts, the piston (2) (6) moves upwards under the action of the elastic force of the spring (17), so that the swing rod (1) (7) and the swing rod (8) are driven to swing inwards, the plunger (1) (11) and the plunger (2) (12) are driven to act, the volume in the cavity is enlarged, the pressure in the cavity is smaller than the pressure outside the cavity, the inlet valve (14) is opened, and the outlet valve (15) closes liquid to flow into the cavity.
The principles and embodiments of the present invention have been described herein using specific examples, which are intended to facilitate an understanding of the principles and core concepts of the invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A piezoelectric stack double-plunger pump with swing amplification mainly comprises a pump body (1), a lower pump cover (2), a piezoelectric stack (3), a piston (1) (4), a hydraulic cavity (5), a piston (2) (6), a swing rod (1) (7), a swing rod (2) (8), a threaded screw (9), a support frame (10), a plunger (1) (11), a plunger (2) (12), a cylindrical screw (13), an inlet valve (14), an outlet valve (15), a pre-tightening bolt (16) and a spring (17); a liquid inlet 1(1-1), a liquid inlet 2(1-2) and a liquid outlet 1(1-3) are formed in two sides of the pump body (1), and an inlet valve (14) and an outlet valve (15) are installed in the liquid outlet 2 (1-4); the lower pump cover (2) is arranged at the bottom of the pump through bonding; the piezoelectric stack (3) is fixed at the top in the upper pump body (1) through a pretightening bolt (16); the upper part of the piston 1(11) is contacted with the piezoelectric stack (3), and the lower part drives hydraulic oil in the hydraulic cavity (5) to achieve the effect of primary amplification; the left and the right of the piston 2(12) are provided with grooves for installing the swing rods 1(17) and 2 (8); the support frame is fixed in a groove (1-5) of the pump body (1); the swing rods 1(7) and 2(8) are connected with a support frame (10) through threaded screws (9) to form lever type swing amplification; the plunger 1(11) and the plunger 2(12) are respectively connected with the oscillating bar 1(7) and the oscillating bar 2(8) through a cylindrical screw rod (13); the spring (17) is arranged between the support frame (10) and the piston 2(6) and is used for the action of the swing amplifying mechanism when the piezoelectric stack (3) contracts.
2. A piezo-electric stack dual-plunger pump for oscillatory amplification according to claim 1, wherein: the piston 1(4) pushes the hydraulic oil in the hydraulic cavity (5) to act so as to achieve the effect of primary amplification.
3. A piezo-electric stack dual-plunger pump for oscillatory amplification according to claim 1, wherein: the oscillating bars 1(7) and the oscillating bars 2(8) are arranged in the grooves of the pistons 2(6) so that the oscillating bars 1(7) and the oscillating bars 2(8) can slide in the grooves.
4. A piezo-electric stack dual-plunger pump for oscillatory amplification according to claim 1, wherein: the swing rods 1 and 7 and the swing rods 2 and 8 are connected with a support frame (10) through threaded screws (9) to form a lever type swing amplification mechanism.
5. A piezo-electric stack dual-plunger pump for oscillatory amplification according to claim 1, wherein: the swing amplification mechanism is symmetrically arranged and can drive the plungers 1(11) and 2(12) to act simultaneously.
6. A piezo-electric stack dual-plunger pump for oscillatory amplification according to claim 1, wherein: a spring (17) is arranged on the piston (2), (12) and the support frame (10) and is used for the action of the swing amplifying mechanism when the piezoelectric stack (3) contracts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011066950.6A CN112196756B (en) | 2020-10-04 | 2020-10-04 | Piezoelectric stack double-plunger pump capable of amplifying swing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011066950.6A CN112196756B (en) | 2020-10-04 | 2020-10-04 | Piezoelectric stack double-plunger pump capable of amplifying swing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112196756A CN112196756A (en) | 2021-01-08 |
| CN112196756B true CN112196756B (en) | 2022-03-29 |
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| CN202011066950.6A Active CN112196756B (en) | 2020-10-04 | 2020-10-04 | Piezoelectric stack double-plunger pump capable of amplifying swing |
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| CN112196756A (en) | 2021-01-08 |
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