CN112196755A - Three-piezoelectric-stack inertia pump with rhombic amplification structure - Google Patents
Three-piezoelectric-stack inertia pump with rhombic amplification structure Download PDFInfo
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- CN112196755A CN112196755A CN202011066949.3A CN202011066949A CN112196755A CN 112196755 A CN112196755 A CN 112196755A CN 202011066949 A CN202011066949 A CN 202011066949A CN 112196755 A CN112196755 A CN 112196755A
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- 230000003321 amplification Effects 0.000 title claims abstract description 31
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 31
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 title claims abstract description 27
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000010146 3D printing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000036961 partial effect Effects 0.000 claims description 3
- 230000006872 improvement Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000014509 gene expression Effects 0.000 description 1
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- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
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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
- F04B53/10—Valves; Arrangement of valves
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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
- F04B53/14—Pistons, piston-rods or piston-rod connections
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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
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses an inertial pump with a three-piezoelectric-stack diamond-shaped amplification structure, which consists of a flow pipe, a wheel-type one-way valve, an umbrella-type one-way valve, a cantilever beam screw, a cantilever beam mass block, a pump body, a diamond-shaped amplification structure, a small stack cover screw, a large stack cover screw, a small piezoelectric stack and a large piezoelectric stack. The included angle of the upper arm and the lower arm of the rhombic amplification structure is 60 degrees, so that the rhombic amplification mechanism has the best effect of transmitting and amplifying the motion and displacement of the small piezoelectric stack and the large piezoelectric stack. The driving part has three stacks, two small piezoelectric stacks and one large piezoelectric stack are connected with two groups of independent power supplies with opposite phases, so that the moving directions of the small piezoelectric stacks and the large piezoelectric stacks are opposite. The flow tube is provided with a one-way valve mounting seat, and a wheel type one-way valve and an umbrella type one-way valve can be selected to be arranged on the one-way valve mounting seat to reversely stop liquid backflow.
Description
Technical Field
The invention relates to an inertial pump with a three-piezoelectric-stack rhombic amplification structure, and belongs to the field of fluid machinery.
Background
The inertial pump has the advantages of simple structure, easy arrangement and the like, and is concerned by people in recent years, however, the inertial pump also has the defects of complex driving part and obvious electromagnetic interference, so that the inertial pump is difficult to be widely applied in daily life.
Disclosure of Invention
The invention provides an inertial piezoelectric pump with simple structure and high output flow aiming at the problems of the existing inertial pump.
The technical scheme adopted by the invention is as follows: an inertial pump with a three-piezoelectric-stack diamond amplification structure is composed of a flow tube (1), a wheel type one-way valve (1-1), an umbrella type one-way valve (1-2), a cantilever beam (2), a cantilever beam screw (2-1), a cantilever beam mass block (2-3), a pump body (3), a diamond amplification structure (4), a small stack cover (5), a small stack cover screw (5-2), a large stack cover (6), a large stack cover screw (6-1), a small piezoelectric stack (7) and a large piezoelectric stack (8);
the flow tube (1) is provided with a one-way valve mounting seat (1-3), an inflow port (1-4) and an outflow port (1-5), the cantilever beam (2) is provided with a cantilever beam screw hole (2-2), the pump body (3) is provided with a cantilever beam screw hole (3-1), a small stack cover screw hole (3-2), a large stack cover screw hole (3-3), a pump body base (3-4), a small stack cover hole (3-5), a large stack cover hole (3-6), a small stack hole (3-7) and a large stack hole (3-8), the small stack cover (5) is provided with a small stack cover screw hole (5-1), the large stack cover (6) is provided with a large stack cover screw hole (6-2), and one of the wheel type one-way valve (1-1) and the umbrella type one-way valve (1-2) can be selected and placed in the one-way valve mounting seat (1) of the flow tube (1) 3) The cantilever beam (2) and a cantilever beam mass block (2-3) are of an integral structure, a greater density is set in the area to realize different partial masses of the same structure during 3D printing and manufacturing, the flow pipe (1) and the cantilever beam (2) are in interference fit, the cantilever beam (2) and the pump body (3) are matched through an arm beam screw hole (2-2) and an arm beam screw hole (3-1) by a cantilever beam screw (2-1), the small stack cover (5) is matched with one end of a small piezoelectric stack (7), meanwhile, the small stack cover (5) is matched with a small stack cover hole (3-5) of the pump body (3) through a small stack cover screw hole (5-1) and a small stack cover screw hole (3-2) by a small stack cover screw (5-2), and the other end of the small piezoelectric stack (7) enters the small stack hole (3-7) of the pump body (3), the large stacking cover (6) is matched with one end of a large piezoelectric stack (8), the large stacking cover (6) is matched with a large stacking cover hole (3-6) of the pump body (3) through a large stacking cover screw hole (6-2) and a large stacking cover screw hole (3-3) through a large stacking cover screw (6-1), the other end of the large piezoelectric stack (8) enters the large stacking hole (3-8) of the pump body (3), the bottom surface and two side surfaces of the rhombic amplification structure (4) are tightly bonded with the large piezoelectric stack (8) and the small piezoelectric stack (9) respectively, the top surface of the rhombic amplification structure (4) is bonded with the cantilever beam (2), and pre-tightening is realized by pressure generated by matching of the cantilever beam screw (2-1), so that the purpose of assembling the whole pump is achieved;
as a further improvement of the technical scheme, the included angle of the upper arm and the lower arm of the rhombic amplifying structure (4) is 60 degrees, so that the rhombic amplifying mechanism has the best effect of transmitting and amplifying the movement and displacement of the small piezoelectric stack (7) and the large piezoelectric stack (8);
as a further improvement of the above technical solution, the rhombic amplifying structure (4) is in close contact with the small stack (7) and the large stack (8), and the small piezoelectric stack (7) and the large piezoelectric stack (8) are connected to two groups of independent power supplies with opposite phases, so that the moving directions of the small piezoelectric stack (7) and the large piezoelectric stack (8) are opposite, when the small piezoelectric stack (7) extends, the large piezoelectric stack (8) contracts, when the small piezoelectric stack (7) contracts, the large piezoelectric stack (8) extends, the displacement of the top surface of the rhombic amplifying structure (4) is further amplified, and further the vibration amplitude of the cantilever beam (2) is amplified;
as a further improvement of the technical scheme, the cantilever beam (2) is designed with a variable cross-section groove, so that the rigidity of the cantilever beam (2) is weakened, and the amplitude of the tail end of the cantilever beam (2) is increased;
as a further improvement of the technical scheme, the tail end of the cantilever beam (2) is provided with a cantilever beam mass block (2-3) which forms a coupling system with the cantilever beam (2) to further amplify the amplitude of the tail end of the cantilever beam (2);
as a further improvement of the technical scheme, the flow pipe (1) is provided with a one-way valve mounting seat (1-3), and the wheel type one-way valve (1-1) and the umbrella type one-way valve (1-2) can be selected to be arranged on the one-way valve mounting seat (1-3) to reversely stop liquid backflow.
The invention has the beneficial effects that:
the diamond-shaped amplification structure is added, and meanwhile, two groups of piezoelectric stacks are arranged on three sides of the diamond-shaped amplification structure, and the two groups of piezoelectric stacks are opposite in power supply phase and independent from each other, so that the deformation of the diamond-shaped amplification structure is further amplified;
the variable cross-section cantilever beam is added, the mass block is arranged at the tail end of the variable cross-section beam, and the mass block and the cantilever beam form a coupling system to further amplify the displacement of the tail end of the cantilever beam;
the invention can select two check valves, and because of the working characteristics of the inertial pump, the check valve does not need to be bonded with the flow pipe, so that the structure of the pump is simplified and the assembly is convenient.
Drawings
Fig. 1 is an overall schematic view of the present invention.
Fig. 2 shows an overall cross-sectional view of the present invention.
Fig. 3 shows an exploded view of the present invention.
Figure 4 is a schematic view of the wheeled valve of the present invention.
Figure 5 shows a schematic view of an umbrella valve of the present invention.
FIG. 6 shows a cross-sectional view of an umbrella valve assembly of the present invention.
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 to 6, in an embodiment of the present invention, a specific structure includes:
an inertial pump with a three-piezoelectric-stack diamond amplification structure is composed of a flow tube (1), a wheel type one-way valve (1-1), an umbrella type one-way valve (1-2), a cantilever beam (2), a cantilever beam screw (2-1), a cantilever beam mass block (2-3), a pump body (3), a diamond amplification structure (4), a small stack cover (5), a small stack cover screw (5-2), a large stack cover (6), a large stack cover screw (6-1), a small piezoelectric stack (7) and a large piezoelectric stack (8); the flow tube (1) is provided with a one-way valve mounting seat (1-3), an inflow port (1-4) and an outflow port (1-5), the cantilever beam (2) is provided with a cantilever beam screw hole (2-2), the pump body (3) is provided with a cantilever beam screw hole (3-1), a small stack cover screw hole (3-2), a large stack cover screw hole (3-3), a pump body base (3-4), a small stack cover hole (3-5), a large stack cover hole (3-6), a small stack hole (3-7) and a large stack hole (3-8), the small stack cover (5) is provided with a small stack cover screw hole (5-1), the large stack cover (6) is provided with a large stack cover screw hole (6-2), and one of the wheel type one-way valve (1-1) and the umbrella type one-way valve (1-2) can be selected and placed in the one-way valve mounting seat (1) of the flow tube (1) 3) The cantilever beam (2) and a cantilever beam mass block (2-3) are of an integral structure, a greater density is set in the area to realize different partial masses of the same structure during 3D printing and manufacturing, the flow pipe (1) and the cantilever beam (2) are in interference fit, the cantilever beam (2) and the pump body (3) are matched through an arm beam screw hole (2-2) and an arm beam screw hole (3-1) by a cantilever beam screw (2-1), the small stack cover (5) is matched with one end of a small piezoelectric stack (7), meanwhile, the small stack cover (5) is matched with a small stack cover hole (3-5) of the pump body (3) through a small stack cover screw hole (5-1) and a small stack cover screw hole (3-2) by a small stack cover screw (5-2), and the other end of the small piezoelectric stack (7) enters the small stack hole (3-7) of the pump body (3), the large stacking cover (6) is matched with one end of a large piezoelectric stack (8), the large stacking cover (6) is matched with a large stacking cover hole (3-6) of the pump body (3) through a large stacking cover screw hole (6-2) and a large stacking cover screw hole (3-3) through a large stacking cover screw (6-1), the other end of the large piezoelectric stack (8) enters the large stacking hole (3-8) of the pump body (3), the bottom surface and two side surfaces of the rhombic amplification structure (4) are tightly bonded with the large piezoelectric stack (8) and the small piezoelectric stack (9) respectively, the top surface of the rhombic amplification structure (4) is bonded with the cantilever beam (2), and pre-tightening is realized by pressure generated by matching of the cantilever beam screw (2-1), so that the purpose of assembling the whole pump is achieved;
as a further improvement of the technical scheme, the included angle of the upper arm and the lower arm of the rhombic amplifying structure (4) is 60 degrees, so that the rhombic amplifying mechanism has the best effect of transmitting and amplifying the movement and displacement of the small piezoelectric stack (7) and the large piezoelectric stack (8);
as a further improvement of the above technical solution, the rhombic amplifying structure (4) is in close contact with the small piezoelectric stack (7) and the large piezoelectric stack (8), and the small piezoelectric stack (7) and the large piezoelectric stack (8) are connected with two groups of independent power supplies with opposite phases, so that the moving directions of the small piezoelectric stack (7) and the large piezoelectric stack (8) are opposite, when the small piezoelectric stack (7) extends, the large piezoelectric stack (8) contracts, when the small piezoelectric stack (7) contracts, the large piezoelectric stack (8) extends, so that the displacement of the top surface of the rhombic amplifying structure (4) is further amplified, and further the vibration amplitude of the cantilever beam (2) is amplified;
as a further improvement of the technical scheme, the cantilever beam (2) is designed with a variable cross-section groove, so that the rigidity of the cantilever beam (2) is weakened, and the amplitude of the tail end of the cantilever beam (2) is increased;
as a further improvement of the technical scheme, the tail end of the cantilever beam (2) is provided with a cantilever beam mass block (2-3) which forms a coupling system with the cantilever beam (2) to further amplify the amplitude of the tail end of the cantilever beam (2);
as a further improvement of the technical scheme, the flow pipe (1) is provided with a one-way valve mounting seat (1-3), and the wheel type one-way valve (1-1) and the umbrella type one-way valve (1-2) can be selected to be arranged on the one-way valve mounting seat (1-3) to reversely stop liquid backflow.
The working process of the invention is divided into a first working process and a second working process:
the first working process comprises the following steps: applying two groups of alternating current signals with opposite phases to the small piezoelectric stack (7) and the large piezoelectric stack (8), wherein the small piezoelectric stack (7) and the large piezoelectric stack (8) drive the rhombic amplifying structure (4) to shorten in the vertical direction and elongate in the horizontal direction, the rhombic amplifying structure (4) pulls the cantilever beam (2) downwards, the wheel type one-way valve (1-1) or the umbrella type one-way valve (1-2) is opened in the downstream flow outflow direction, liquid in the flow pipe (1) is kept static relatively in the outflow direction of the flow pipe due to the inertia effect, and the liquid passes through the wheel type one-way valve (1-1) or the umbrella type one-way valve (1-2);
the second working process: the small piezoelectric stack (7) and the large piezoelectric stack (8) drive the rhombic amplification structure (4) to extend in the vertical direction and shorten in the horizontal direction under the excitation of a reverse alternating current signal, the rhombic amplification structure (4) upwards jacks up the cantilever beam (2), the wheel type one-way valve (1-1) or the umbrella type one-way valve (1-2) is closed in the flowing-out direction of a fluid, the fluid in the flow pipe (1) upwards flows to the flow pipe (1) due to the inertia effect and reaches the outflow port (1-5), and the backflow is reduced under the effect of the wheel type one-way valve (1-1) or the umbrella type one-way valve (1-2).
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. An inertial pump with a three-piezoelectric-stack diamond amplification structure is composed of a flow tube (1), a wheel type one-way valve (1-1), an umbrella type one-way valve (1-2), a cantilever beam (2), a cantilever beam screw (2-1), a cantilever beam mass block (2-3), a pump body (3), a diamond amplification structure (4), a small stack cover (5), a small stack cover screw (5-2), a large stack cover (6), a large stack cover screw (6-1), a small piezoelectric stack (7) and a large piezoelectric stack (8); the flow tube (1) is provided with a one-way valve mounting seat (1-3), an inflow port (1-4) and an outflow port (1-5), the cantilever beam (2) is provided with a cantilever beam screw hole (2-2), the pump body (3) is provided with a cantilever beam screw hole (3-1), a small stack cover screw hole (3-2), a large stack cover screw hole (3-3), a pump body base (3-4), a small stack cover hole (3-5), a large stack cover hole (3-6), a small stack hole (3-7) and a large stack hole (3-8), the small stack cover (5) is provided with a small stack cover screw hole (5-1), the large stack cover (6) is provided with a large stack cover screw hole (6-2), and one of the wheel type one-way valve (1-1) and the umbrella type one-way valve (1-2) can be selected and placed in the one-way valve mounting seat (1) of the flow tube (1) 3) The cantilever beam (2) and a cantilever beam mass block (2-3) are of an integral structure, a greater density is set in the area to realize different partial masses of the same structure during 3D printing and manufacturing, the flow pipe (1) and the cantilever beam (2) are in interference fit, the cantilever beam (2) and the pump body (3) are matched through an arm beam screw hole (2-2) and an arm beam screw hole (3-1) by a cantilever beam screw (2-1), the small stack cover (5) is matched with one end of a small piezoelectric stack (7), meanwhile, the small stack cover (5) is matched with a small stack cover hole (3-5) of the pump body (3) through a small stack cover screw hole (5-1) and a small stack cover screw hole (3-2) by a small stack cover screw (5-2), and the other end of the small piezoelectric stack (7) enters the small stack hole (3-7) of the pump body (3), the large stacking cover (6) is matched with one end of a large piezoelectric stack (8), the large stacking cover (6) is matched with a large stacking cover hole (3-6) of the pump body (3) through a large stacking cover screw hole (6-2) and a large stacking cover screw hole (3-3) through a large stacking cover screw (6-1), the other end of the large piezoelectric stack (8) enters the large stacking hole (3-8) of the pump body (3), the bottom surface and the two side surfaces of the rhombic amplification structure (4) are tightly bonded with the large piezoelectric stack (8) and the small piezoelectric stack (9) respectively, the top surface of the rhombic amplification structure (4) is bonded with the cantilever beam (2), and pre-tightening is realized through pressure generated by matching of the cantilever beam screws (2-1), so that the purpose of assembling the whole pump is achieved.
2. The inertial pump with three-piezoelectric-stack diamond-shaped amplification structure according to claim 1, wherein: the included angle of the upper arm and the lower arm of the rhombic amplification structure (4) is 60 degrees, so that the rhombic amplification mechanism has the best effect of transmitting and amplifying the movement and displacement of the small piezoelectric stack (7) and the large piezoelectric stack (8).
3. The inertial pump with three-piezoelectric-stack diamond-shaped amplification structure according to claim 1, wherein: the rhombic amplifying structure (4) is in close contact with the small piezoelectric stack (7) and the large piezoelectric stack (8), the small piezoelectric stack (7) and the large piezoelectric stack (8) are connected with two groups of independent power supplies with opposite phases, the moving directions of the small piezoelectric stack (7) and the large piezoelectric stack (8) are opposite, the large piezoelectric stack (8) shrinks when the small piezoelectric stack (7) stretches, and the large piezoelectric stack (8) stretches when the small piezoelectric stack (7) shrinks, so that the displacement of the top surface of the rhombic amplifying structure (4) is further amplified, and the vibration amplitude of the cantilever beam (2) is further amplified.
4. The inertial pump with three-piezoelectric-stack diamond-shaped amplification structure according to claim 1, wherein: the cantilever beam (2) is provided with a variable cross-section groove, so that the rigidity of the cantilever beam (2) is weakened, and the amplitude of the tail end of the cantilever beam (2) is increased.
5. The inertial pump with three-piezoelectric-stack diamond-shaped amplification structure according to claim 1, wherein: the tail end of the cantilever beam (2) is provided with a cantilever beam mass block (2-3) which forms a coupling system with the cantilever beam (2) to further amplify the amplitude of the tail end of the cantilever beam (2).
6. The inertial pump with three-piezoelectric-stack diamond-shaped amplification structure according to claim 1, wherein: the flow pipe (1) is provided with a one-way valve mounting seat (1-3), and the wheel type one-way valve (1-1) and the umbrella type one-way valve (1-2) can be selected to be arranged on the one-way valve mounting seat (1-3) to reversely stop liquid backflow.
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| CN202011066949.3A CN112196755B (en) | 2020-10-04 | 2020-10-04 | Three-piezoelectric-stack inertia pump with rhombic amplification structure |
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| CN202011066949.3A CN112196755B (en) | 2020-10-04 | 2020-10-04 | Three-piezoelectric-stack inertia pump with rhombic amplification structure |
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| CN112196755B CN112196755B (en) | 2022-06-17 |
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