CN101574027B - Ultrasonic scarifier and soil scarification method - Google Patents

Ultrasonic scarifier and soil scarification method Download PDF

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Publication number
CN101574027B
CN101574027B CN200910099450XA CN200910099450A CN101574027B CN 101574027 B CN101574027 B CN 101574027B CN 200910099450X A CN200910099450X A CN 200910099450XA CN 200910099450 A CN200910099450 A CN 200910099450A CN 101574027 B CN101574027 B CN 101574027B
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soil
oscillating plate
ultrasonic
transducer
water
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CN101574027A (en
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黄德中
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University of Shaoxing
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University of Shaoxing
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Abstract

本发明公开了一种超声波松土器及松土方法,其特点在于,包括超声波信号发生器、换能器、振动板,其中,超声波信号发生器与换能器通过导线联接,换能器与振动板相连。先将振动板安装在水面下土壤上,启动超声波信号发生器,产生高频信号给换能器,换能器将高频信号转换成超声波振动,使振动板推动水作超声波振动,土壤中的水产生空化现象而使土变松,达到松土效果。本发明具有松土块,效率高,且节能环保的优点。

Figure 200910099450

The invention discloses an ultrasonic scarifier and a soil scarifier method, which are characterized in that it comprises an ultrasonic signal generator, a transducer, and a vibrating plate, wherein the ultrasonic signal generator and the transducer are connected through wires, and the transducer and the vibrating board connected. First install the vibrating plate on the soil under the water surface, start the ultrasonic signal generator, generate a high-frequency signal to the transducer, and the transducer converts the high-frequency signal into ultrasonic vibration, so that the vibrating plate pushes the water for ultrasonic vibration. The water produces cavitation and loosens the soil to achieve the effect of loosening the soil. The invention has the advantages of loosening soil blocks, high efficiency, energy saving and environmental protection.

Figure 200910099450

Description

Ultrasonic scarifier and scarifying method
Technical field
The present invention relates to a kind of ultrasonic scarifier and scarifying method, be used in the occasion of underwater cultivation, belong to agricultural machinery technological field.
Background technology
When planting crop in the agricultural engineering, must loosen the soil to the soil, in order to plantation, growth and the absorption nutrition of crop, power is held in the many employings of traditional farming or tractor loosens the soil, and is to utilize the mechanical shearing of instrument to soil, native fragmentation is loosened the soil, shortcoming is that soil block is big, and is broken insufficient, inhomogeneous, capacity usage ratio is not high, and tractor has pollution to environment.
Summary of the invention
Technical problem to be solved by this invention provides the ultrasonic scarifier of a kind of reasonable in design, applied widely, energy-saving and environmental protecting, its characteristics are, comprise ultrasonic signal generator 1, transducer 2, oscillating plate 3, wherein, ultrasonic signal generator 1 and transducer 2 connect by lead, and transducer 2 links to each other with oscillating plate 3.
Another object of the present invention provides a kind of ultrasonic scarifying method, may further comprise the steps: earlier oscillating plate 3 is installed on the soil of underwater, start ultrasonic signal generator 1, produce high-frequency signal and give transducer 2, transducer 2 converts high-frequency signal to ultrasonic vibration, make oscillating plate 3 promote water and make ultrasonic vibration, the water generates cavitation phenomenon in the soil and soil is fluffed reaches the effect of loosening the soil.
Aforesaid ultrasonic vibration plate is that one deck has certain thickness corrosion resistant plate, transducer is bonded on the oscillating plate, by the certain frequency of supersonic generator generation and the ac signal of voltage, drive transducer and oscillating plate and do dither together, when oscillating plate upwards vibrates, water is upwards pushed open, when oscillating plate vibrates downwards, water does not catch up with the vibration velocity of oscillating plate, between water and oscillating plate, can form a space, vibration just has many bubble formation so repeatedly, this bubble is produced by " cavitation effect ", and we are referred to as cavitation bubble, and cavitation bubble can be along direction of vibration to water transmission, cavitation bubble produces thousands of atmospheric impacts after striking aqueous soil, thus the purpose that realization is loosened the soil.
Operation principle of the present invention is as follows: because hyperacoustic wavelength is short, so ultrasonic is near-sighted straightline propagation in aqueous soil, produce reflection, refraction at interface, cause the vibration vortex of irregular movement, aqueous soil is played agitaion, and the water particle liquid internal can produce sound cavitation effect and acoustic streaming effect in soil simultaneously.Sound cavitation effect is meant: when ultrasonic is propagated in aqueous soil, because ultrasonic frequency height, power are big, fluid molecule is subjected to the periodically effect of alternation sound field, that the density that causes liquid changes is fast, the difference of density greatly, this density changes, when making aqueous soil and tension, the time and pressurized produces negative pressure in liquid, sound wave sparse mutually in, liquid is subjected to tension, if sound pressure level is enough big, then liquid is produced cavitation bubble or hole by drawing crack.Low density gas or steam abrim in this moment emptying aperture, form cavitation nucleus, in aqueous soil, always have a certain amount of microbubble usually, but be not that all microvesicles in the aqueous soil can both become the cavitation complex, have only when the acoustic pressure in the liquid surpasses certain threshold value, cavitation bubble could form.Under the vibration effect of sound field, when acoustic pressure reaches certain value, bubble will expand rapidly, the sound wave malleation of arriving subsequently mutually in, these cavitation bubbles or hole will be with high speed closure or collapses, when closed high and pressurized, but the tension of aqueous soil is very poor, and aqueous soil will rupture, produce the little hole that some are close to vacuum, then liquid is compressed, and these holes are compressed to collapse, in the collapse process, inside, hole reaches several thousand atmospheric pressure, continuously produce instantaneous pressure and resemble a succession of little " blast " and constantly impact soil inside, soil is fluffed, thereby reach the purpose on the ground that loosens the soil.
When high-energy ultrasonic was propagated in aqueous soil, because of the interaction of viscous force in sound wave and the aqueous soil, the finite amplitude decay made in the aqueous soil and begins to form certain acoustic pressure gradient from sound source, caused flowing of aqueous soil to be the acoustic streaming effect.Aqueous soil middle distance sound source is far away more, and the equivalent force that the finite amplitude acoustic streaming causes is more little.The acceleration of the acoustic streaming that high-energy ultrasonic causes in aqueous soil is big, and makes acoustic streaming with bigger speed motion, can reach 10~10 of fluid thermal convection velocity 3Doubly.Stirring, dispersion, degasification, impact failure, effect and aqueous soil in the mechanics effect that acoustic cavitation and acoustic streaming the are caused reason of loosening the soil.
The present invention has compared following advantage and effect with prior art: 1, ultrasonic loosens the soil, and it is fast to have the speed of loosening the soil, the good effectiveness of loosening the soil.2, energy savings, weeds have dehydration in 3 pairs of soil, make weeds death, and herbicide effect is arranged.
Below in conjunction with embodiment the present invention is further described in detail, following examples are explanation of the invention but the present invention is not limited to following examples.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, ultrasonic scarifier of the present invention comprises ultrasonic signal generator 1, transducer 2, oscillating plate 3, and wherein, oscillating plate 3 is installed on the soil of underwater, ultrasonic signal generator 1 and transducer 2 connect by lead, and transducer 2 links to each other with oscillating plate 3.
During work, earlier with ultrasonic signal generator 1 power supply opening, make transducer 2 produce ultrasonic vibration, carry out ultrasonic vibration by 3 pairs of water and soil earth of oscillating plate, soil is produced cavitation effect, under the vibration effect of sound field, when acoustic pressure reaches certain value, bubble will expand rapidly, the sound wave malleation of arriving subsequently mutually in, these cavitation bubbles or hole will the closed or collapses with high speed, when closed high and pressurized, but the tension of aqueous soil is very poor, aqueous soil will rupture, and produces the little hole that some are close to vacuum, and then liquid is compressed, these holes are compressed to collapse, in the collapse process, inside, hole reaches several thousand atmospheric pressure, continuously produces instantaneous pressure and resembles a succession of little " blast " and constantly impact soil inside, soil is fluffed, thereby reach the purpose on the ground that loosens the soil.

Claims (1)

1. ultrasonic scarifying method, it is characterized in that, may further comprise the steps: earlier oscillating plate is installed on the soil of underwater, start ultrasonic signal generator, produce high-frequency signal and give transducer, transducer converts high-frequency signal to ultrasonic vibration, make oscillating plate promote water and make ultrasonic vibration, described oscillating plate is one deck corrosion resistant plate, transducer is bonded on the oscillating plate, by the certain frequency of ultrasonic signal generator generation and the ac signal of voltage, drives transducer and oscillating plate and does dither together, when oscillating plate upwards vibrates, water is upwards pushed open, and when oscillating plate vibrated downwards, water did not catch up with the vibration velocity of oscillating plate, between water and oscillating plate, can form a space, vibration just has many bubble and forms so repeatedly, forms cavitation effect, the cavitation bubble that produces by cavitation effect along direction of vibration to water transmission, cavitation bubble produces thousands of atmospheric impacts after striking aqueous soil, thus the purpose that realization is loosened the soil.
CN200910099450XA 2009-06-11 2009-06-11 Ultrasonic scarifier and soil scarification method Expired - Fee Related CN101574027B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103896404B (en) * 2014-04-02 2016-03-16 河海大学 A kind of artificial swamp ultrasonic wave dredges block apparatus and application
CN105115545A (en) * 2015-09-15 2015-12-02 绍兴文理学院 Supersonic wave ridge buster test board
CN105453931A (en) * 2015-12-08 2016-04-06 廖丹丹 Indoor anti-haze vegetation layer automatic soil-loosening device
CN108029252A (en) * 2017-12-25 2018-05-15 青岛农业大学 The bidirectional crossed vibration soil excavating gear of ultrasonic wave
RU194724U1 (en) * 2019-11-07 2019-12-19 Федеральное государственное бюджетное научное учреждение "Федеральный научный агроинженерный центр ВИМ" (ФГБНУ ФНАЦ ВИМ) Ultrasonic surface loosening device
CN112825629A (en) * 2021-01-19 2021-05-25 安徽维嵩生产力促进有限公司 An intelligent soil loosening device for asparagus planting
CN116147968B (en) * 2023-01-02 2024-04-12 山东佰通建设工程有限公司 Soil sampler for land resource planning

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DE3319531A1 (en) * 1983-05-28 1984-11-29 Hermann 4472 Haren Bergmann Device which produces vibrations
CN1123283C (en) * 1998-11-05 2003-10-08 卢锦峰 Method for preventing drip head from being blocked with fluctuation and anti-blocking drip head
CN1210217C (en) * 2000-10-06 2005-07-13 艾伯株式会社 Method and appts. for reducing excessive mud

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
DE3319531A1 (en) * 1983-05-28 1984-11-29 Hermann 4472 Haren Bergmann Device which produces vibrations
CN1123283C (en) * 1998-11-05 2003-10-08 卢锦峰 Method for preventing drip head from being blocked with fluctuation and anti-blocking drip head
CN1210217C (en) * 2000-10-06 2005-07-13 艾伯株式会社 Method and appts. for reducing excessive mud

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德语学习.用超声波犁田.《德语学习》.2005,(第1期),10-11. *
郑文轩等.超声波在农业中的应用及前景展望.《农业展望》.2008,(第1期),40-42. *

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