CN113123945A - Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation - Google Patents
Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation Download PDFInfo
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- CN113123945A CN113123945A CN202110450883.6A CN202110450883A CN113123945A CN 113123945 A CN113123945 A CN 113123945A CN 202110450883 A CN202110450883 A CN 202110450883A CN 113123945 A CN113123945 A CN 113123945A
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- 230000002262 irrigation Effects 0.000 title claims abstract description 16
- 238000003973 irrigation Methods 0.000 title claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000005086 pumping Methods 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 230000009286 beneficial effect Effects 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 239000012141 concentrate Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
- F04B43/046—Micropumps with piezoelectric drive
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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
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
本发明公开了一种用于农业喷灌的基于柔性支撑的音叉式谐振泵，具体涉及一种农业灌溉系统中用于流体输送的装置。由质量块、音叉型振子、传振杆、圆头螺母、方形传振弹片、键零件、压电振子等组成。方形传振弹片固定在将其振动期间形变集中在中空区域的柔性支撑结构。在本发明中，不同波形的电信号驱动压电振子，从而实现对泵腔内流体的定向输送，本发明中压电致动器并不直接作用于泵腔，谐振结构利用共振原理将压电致动器的位移放大后驱动泵腔隔膜。以此提高泵送效率，使本发明即使在流体高度差较大的情况下也能完成高效率泵送，利于农业喷洒。并且柔性支撑结构能够有效的保护泵腔，延长使用寿命，有效降低成本。
The invention discloses a flexible support-based tuning fork resonant pump used for agricultural sprinkling irrigation, in particular to a device for fluid conveying in an agricultural irrigation system. It is composed of mass block, tuning fork type vibrator, vibration transmission rod, round head nut, square vibration transmission shrapnel, key parts, piezoelectric vibrator, etc. The square vibration-transmitting shrapnel is fixed to a flexible support structure that concentrates its deformation during vibration in the hollow area. In the present invention, electrical signals of different waveforms drive the piezoelectric vibrator, thereby realizing the directional delivery of the fluid in the pump cavity. In the present invention, the piezoelectric actuator does not directly act on the pump cavity, and the resonance structure uses the resonance principle to convert the piezoelectric The amplified displacement of the actuator drives the pump chamber diaphragm. In this way, the pumping efficiency is improved, so that the present invention can complete high-efficiency pumping even when the fluid height difference is large, which is beneficial to agricultural spraying. And the flexible support structure can effectively protect the pump cavity, prolong the service life, and effectively reduce the cost.
Description
Technical Field
The invention belongs to the field of fluid machinery, and particularly relates to a device for conveying fluid in an agricultural irrigation system.
Background
The piezoelectric pump is a fluid conveying device taking a piezoelectric vibrator as a driving force source, has the advantages of small volume, low power consumption, low cost, no electromagnetic interference, accurate flow control and the like, is widely applied to the fields of biomedicine, precise chemistry, micro-electromechanical engineering and the like, but has less application in the agricultural field.
The traditional agriculture is not in place for improving and applying an irrigation system, so that a large amount of water resource is wasted, the irrigation cost is continuously increased, and the water resource is saved and the income of farmers is improved. The invention provides a tuning fork type resonance pump based on flexible support for agricultural sprinkling irrigation, and relates to a device for conveying fluid in an agricultural irrigation system. Therefore, the pumping efficiency is improved, the high-efficiency pumping can be finished even under the condition that the height difference of the fluid is large, and the agricultural spraying is facilitated. And the flexible supporting structure can effectively protect the pump cavity, prolong the service life and effectively reduce the cost.
Disclosure of Invention
The invention provides a piezoelectric pump capable of protecting a pump cavity and having high output flow aiming at the problems of the conventional piezoelectric pump.
The technical scheme adopted by the invention is as follows: a tuning fork type resonance pump based on flexible support for agricultural sprinkling irrigation is composed of a mass block (1), a tuning fork type vibrator (2), a vibration transmission rod (3), a round-head nut (4), a square vibration transmission elastic sheet (5), a key part (6), a piezoelectric vibrator (7), an outlet (8), an umbrella-shaped check valve (9), an inner fixed block (10), an outer fixed block (11), a pump cavity (12), a support sheet (13), an inlet (14) and a support rod (15);
the mass block (1) is an adjustable mass block, the tuning fork vibrator (2) is provided with a key groove (2-1) for mounting a key part (6) and an elongated slot (2-2) for mounting a vibration transmission rod (3), the vibration transmission rod (3) is provided with a thread for installing a round-head nut (4) to fix the vibration transmission rod (3) and the forked vibrator (2) and is provided with a groove (3-1) for installing a square vibration transmission elastic sheet (5), the outlet (8) is provided with an outlet valve port (8-1) for installing an umbrella-shaped one-way valve (9), the outer fixing block (11) is provided with a threaded hole for mounting a supporting rod (15), the support sheet (13) is provided with a hollow design (13-1) shown in figure 3 for mounting the vibration transmission elastic sheet (5), the inlet (14) is provided with an inlet valve port (14-1) for mounting an umbrella-shaped one-way valve (9). The vibration transmission rod (3) is provided with threads, penetrates through the tuning fork vibrator (2) and is fixed through a round-head nut (4), the piezoelectric vibrator (7) is bonded to the tuning fork vibrator (2), the mass block (1) is fixed to the outer side of the tuning fork vibrator (2), the square vibration transmission elastic sheet (5) is installed on the vibration transmission rod (3) through a groove (3-1), the square vibration transmission elastic sheet (5) is bonded to fix four corners to a support sheet (13), the inner fixing block (10) and the pump cavity (12) are in interference fit with the outer side of the pump cavity (12), the pump cavity (12) and the outer fixing block (11) are fixed to the inner side of the outer fixing block (11), and the outlet (8) and the inlet (14) are matched with the pump cavity (12) so as to achieve the purpose of assembling;
as a further improvement of the technical scheme, the mass block (1) is arranged for controlling the resonant frequency of the piezoelectric vibrator, and the performance of the resonant pump can be adjusted by changing the size and the mass of the mass block. The tuning fork vibrator adopts a tuning fork type structure, because the tuning fork works in a resonance state, and the working mode is a reverse working mode;
as a further improvement of the technical scheme, the tuning fork type vibrator (2) is provided with a key slot for mounting a key part (6), so that the distance between the vibration transmission rod (3) and the piezoelectric vibrator (7) can be adjusted, and the performance of the resonance pump can be adjusted;
as a further improvement of the above technical solution, the inner fixing block (10), the outer fixing block (11), the support sheet (13), and the support rod (15) form a flexible support structure for the square vibration-transmitting elastic sheet as shown in fig. 3, wherein the support sheet (13) is provided with a hollow design as shown in fig. 3, and four corners of the square vibration-transmitting elastic sheet (5) are fixed on the vibrator support, thereby forming a structure having flexible support for the square vibration-transmitting elastic sheet (5). It is possible to reduce the vibration constraint of the vibration transmission rod (3) and concentrate the deformation in the hollow region during the vibration. The substrate with flexible support can improve the mechanical performance of the piezoelectric vibration mechanism and protect the pump cavity (10);
as a further improvement of the scheme, the piezoelectric actuator does not directly act on the pump cavity, and the resonant structure utilizes the resonance principle to amplify the displacement of the piezoelectric actuator and then drive the pump cavity diaphragm. Therefore, the pumping efficiency is improved, the high-efficiency pumping can be finished even under the condition that the height difference of the fluid is large, and the agricultural spraying is facilitated. And the flexible supporting structure can effectively protect the pump cavity, prolong the service life and effectively reduce the cost.
The invention has the beneficial effects that:
the flexible cavity is driven to deform by applying the resonance vibration of the piezoelectric vibration to the flexible cavity, so that the output flow is improved;
the tuning fork type vibrator is provided with a key groove for mounting key parts, so that the distance between the vibration transmission rod and the piezoelectric vibrator can be adjusted, and the performance of the resonance pump can be adjusted;
the flexible support structure of this invention concentrates the deformation during vibration in the hollow area, and can improve the mechanical performance of the piezoelectric vibration mechanism and protect the pump chamber;
the piezoelectric actuator in the invention is separated from the pump cavity diaphragm, and the displacement of the piezoelectric actuator is amplified by utilizing the resonance principle to drive the pump cavity diaphragm. Therefore, the pumping efficiency is improved, the high-efficiency pumping can be finished under the condition that the height difference of the fluid is large, the flexible supporting structure can effectively protect the pump cavity, the service life is prolonged, and the cost is effectively reduced.
Drawings
Fig. 1 shows a schematic overall explosion of the present invention.
FIG. 2 is a schematic diagram of the overall oblique two-point measurement of the present invention.
Fig. 3 is an exploded view of the flexible support structure of the present invention.
Fig. 4 shows an exploded view of the resonant structure of the present invention.
Figure 5 is a schematic cross-sectional view of a pumping arrangement according to the present invention.
Fig. 6 is a detailed view of the keyway structure 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:
a tuning fork type resonance pump based on flexible support for agricultural sprinkling irrigation is composed of a mass block (1), a tuning fork type vibrator (2), a vibration transmission rod (3), a round-head nut (4), a square vibration transmission elastic sheet (5), a key part (6), a piezoelectric vibrator (7), an outlet (8), an umbrella-shaped check valve (9), an inner fixed block (10), an outer fixed block (11), a pump cavity (12), a support sheet (13), an inlet (14) and a support rod (15); the mass block (1) is an adjustable mass block, the tuning fork vibrator (2) is provided with a key groove (2-1) for mounting a key part (6) and an elongated slot (2-2) for mounting a vibration transmission rod (3), the vibration transmission rod (3) is provided with a thread for installing a round-head nut (4) to fix the vibration transmission rod (3) and the forked vibrator (2) and is provided with a groove (3-1) for installing a square vibration transmission elastic sheet (5), the outlet (8) is provided with an outlet valve port (8-1) for installing an umbrella-shaped one-way valve (9), the outer fixing block (11) is provided with a threaded hole for mounting a supporting rod (15), the support sheet (13) is provided with a hollow design (13-1) shown in figure 3 for mounting the vibration transmission elastic sheet (5), the inlet (14) is provided with an inlet valve port (14-1) for mounting an umbrella-shaped one-way valve (9). The vibration transmission rod (3) is provided with threads, penetrates through the tuning fork vibrator (2) and is fixed through a round-head nut (4), the piezoelectric vibrator (7) is bonded to the tuning fork vibrator (2), the mass block (1) is fixed to the outer side of the tuning fork vibrator (2), the square vibration transmission elastic sheet (5) is installed on the vibration transmission rod (3) through a groove (3-1), the square vibration transmission elastic sheet (5) is bonded to fix four corners to a support sheet (13), the inner fixing block (10) and the pump cavity (12) are in interference fit with the outer side of the pump cavity (12), the pump cavity (12) and the outer fixing block (11) are fixed to the inner side of the outer fixing block (11), and the outlet (8) and the inlet (14) are matched with the pump cavity (12) so as to achieve the purpose of assembling;
as a further improvement of the technical scheme, the mass block (1) is arranged for controlling the resonant frequency of the piezoelectric vibrator, and the performance of the resonant pump can be adjusted by changing the size and the mass of the mass block. The tuning fork vibrator adopts a tuning fork type structure, because the tuning fork works in a resonance state, and the working mode is a reverse working mode;
as a further improvement of the technical scheme, the tuning fork type vibrator (2) is provided with a key slot for mounting a key part (6), so that the distance between the vibration transmission rod (3) and the piezoelectric vibrator (7) can be adjusted, and the performance of the resonance pump can be adjusted;
as a further improvement of the above technical solution, the inner fixing block (10), the outer fixing block (11), the support sheet (13), and the support rod (15) form a flexible support structure for the square vibration-transmitting elastic sheet as shown in fig. 3, wherein the support sheet (13) is provided with a hollow design as shown in fig. 3, and four corners of the square vibration-transmitting elastic sheet (5) are fixed on the vibrator support, thereby forming a structure having flexible support for the square vibration-transmitting elastic sheet (5). It is possible to reduce the vibration constraint of the vibration transmission rod (3) and concentrate the deformation in the hollow region during the vibration. The substrate with flexible support can improve the mechanical performance of the piezoelectric vibration mechanism and protect the pump cavity (10);
as a further improvement of the scheme, the piezoelectric actuator does not directly act on the pump cavity, and the resonant structure utilizes the resonance principle to amplify the displacement of the piezoelectric actuator and then drive the pump cavity diaphragm. Therefore, the pumping efficiency is improved, the high-efficiency pumping can be finished even under the condition that the height difference of the fluid is large, and the agricultural spraying is facilitated. And the flexible supporting structure can effectively protect the pump cavity, prolong the service life and effectively reduce the cost.
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 an alternating current signal and a piezoelectric vibrator (7), wherein the piezoelectric vibrator (7) drives a vibration beam of a tuning fork type vibrator (2), a vibration transmission rod (3) and a square vibration transmission elastic sheet (5) to form resonant vibration to act on a pump cavity (10), the resonant vibration moves in the radial direction of the pump cavity (10) in the direction away from the cavity, the volume of the cavity is increased, negative pressure is formed in the pump cavity, fluid at an inlet (14) is filled into the pump cavity along the direction of an umbrella-shaped check valve (9) at an inlet valve port (14-1), the umbrella-shaped check valve (9) at an outlet valve port (8-1) at an outlet (8) is closed, and the fluid flows into the device;
the second working process: an alternating current signal and a piezoelectric vibrator (7) are applied, the piezoelectric vibrator (7) drives a vibration beam of a tuning fork type vibrator (2), a vibration transmission rod (3) and a square vibration transmission elastic sheet (5) to form resonant vibration to act on a pump cavity (10), the resonant vibration moves in the radial direction of the pump cavity (10) towards the direction of the cavity, the volume of the cavity is reduced, positive pressure is formed in the pump cavity, fluid at an outlet (8) flows out of the pump cavity along the direction of an umbrella-shaped one-way valve (9) at an outlet valve port (8-1), the umbrella-shaped one-way valve (9) at the outlet valve port (14-1) at an inlet (14) is closed, and the fluid flows out of the device.
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 (5)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110450883.6A CN113123945A (en) | 2021-04-26 | 2021-04-26 | Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110450883.6A CN113123945A (en) | 2021-04-26 | 2021-04-26 | Tuning fork type resonant pump based on flexible support for agricultural sprinkling irrigation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482891A (en) * | 2021-07-21 | 2021-10-08 | 合肥工业大学 | Resonant frequency adjustable tuning fork type driver driven piezoelectric pump |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030067248A1 (en) * | 2001-10-09 | 2003-04-10 | Eta Sa Fabriques D'ebauches | Piezoelectric resonator and assembly comprising the same enclosed in a case |
| US20050225202A1 (en) * | 2004-04-02 | 2005-10-13 | James Vogeley | Piezoelectric devices and methods and circuits for driving same |
| DE202008007730U1 (en) * | 2008-06-10 | 2008-09-11 | Richter, Siegfried, Dipl.-Ing. (FH) | Electric vibration drive |
| US20090021120A1 (en) * | 2007-07-19 | 2009-01-22 | Eta Sa Manufacture Horlogere Suisse | Piezoelectric generator with optimised motional capacitances |
| CN104660099A (en) * | 2015-01-30 | 2015-05-27 | 合肥工业大学 | Tuning fork type piezoelectric resonant cavity wind power generation device |
| CN108050049A (en) * | 2017-11-03 | 2018-05-18 | 长春工业大学 | A variety of choked flow bluk recombination Valveless piezoelectric pumps |
| CN109162903A (en) * | 2018-09-20 | 2019-01-08 | 长春工业大学 | A kind of novel circular plate type float trap piezoelectric pump |
| CN110094329A (en) * | 2019-04-16 | 2019-08-06 | 合肥工业大学 | A kind of resonant mode piezoelectric pump under power frequency that works |
| CN111980889A (en) * | 2020-09-29 | 2020-11-24 | 长春工业大学 | A semi-flexible integrated valve active piezoelectric pump |
| CN113202718A (en) * | 2021-05-06 | 2021-08-03 | 长春工业大学 | Flexible cavity resonance piezoelectric pump for industrial lubrication |
| CN113482891A (en) * | 2021-07-21 | 2021-10-08 | 合肥工业大学 | Resonant frequency adjustable tuning fork type driver driven piezoelectric pump |
-
2021
- 2021-04-26 CN CN202110450883.6A patent/CN113123945A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030067248A1 (en) * | 2001-10-09 | 2003-04-10 | Eta Sa Fabriques D'ebauches | Piezoelectric resonator and assembly comprising the same enclosed in a case |
| US20050225202A1 (en) * | 2004-04-02 | 2005-10-13 | James Vogeley | Piezoelectric devices and methods and circuits for driving same |
| US20090021120A1 (en) * | 2007-07-19 | 2009-01-22 | Eta Sa Manufacture Horlogere Suisse | Piezoelectric generator with optimised motional capacitances |
| DE202008007730U1 (en) * | 2008-06-10 | 2008-09-11 | Richter, Siegfried, Dipl.-Ing. (FH) | Electric vibration drive |
| CN104660099A (en) * | 2015-01-30 | 2015-05-27 | 合肥工业大学 | Tuning fork type piezoelectric resonant cavity wind power generation device |
| CN108050049A (en) * | 2017-11-03 | 2018-05-18 | 长春工业大学 | A variety of choked flow bluk recombination Valveless piezoelectric pumps |
| CN109162903A (en) * | 2018-09-20 | 2019-01-08 | 长春工业大学 | A kind of novel circular plate type float trap piezoelectric pump |
| CN110094329A (en) * | 2019-04-16 | 2019-08-06 | 合肥工业大学 | A kind of resonant mode piezoelectric pump under power frequency that works |
| CN111980889A (en) * | 2020-09-29 | 2020-11-24 | 长春工业大学 | A semi-flexible integrated valve active piezoelectric pump |
| CN113202718A (en) * | 2021-05-06 | 2021-08-03 | 长春工业大学 | Flexible cavity resonance piezoelectric pump for industrial lubrication |
| CN113482891A (en) * | 2021-07-21 | 2021-10-08 | 合肥工业大学 | Resonant frequency adjustable tuning fork type driver driven piezoelectric pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482891A (en) * | 2021-07-21 | 2021-10-08 | 合肥工业大学 | Resonant frequency adjustable tuning fork type driver driven piezoelectric pump |
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