JP5884114B2 - Soil agitator - Google Patents
Soil agitator Download PDFInfo
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- JP5884114B2 JP5884114B2 JP2011196697A JP2011196697A JP5884114B2 JP 5884114 B2 JP5884114 B2 JP 5884114B2 JP 2011196697 A JP2011196697 A JP 2011196697A JP 2011196697 A JP2011196697 A JP 2011196697A JP 5884114 B2 JP5884114 B2 JP 5884114B2
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- soil
- cylindrical drum
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- agitation
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- 239000002689 soil Substances 0.000 title claims description 93
- 238000003756 stirring Methods 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000013019 agitation Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 6
- 230000002285 radioactive effect Effects 0.000 description 5
- 239000010419 fine particle Substances 0.000 description 4
- 239000000941 radioactive substance Substances 0.000 description 4
- 239000011362 coarse particle Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000012857 radioactive material Substances 0.000 description 3
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Soil Working Implements (AREA)
- Processing Of Solid Wastes (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Description
本発明は、土壌攪拌装置に関する。 The present invention relates to a soil agitator.
福島原子力発電所における放射性物質流出事故に伴い、農用地の放射性セシウムが国の暫定基準値（５０００Bq／kg）を超過した地域が広範囲に及ぶことが懸念され、汚染地の修復が喫緊の課題となっている。 Due to the radioactive material spill accident at the Fukushima nuclear power plant, there is a concern that the area where the radioactive cesium of agricultural land exceeded the national provisional standard value (5000 Bq / kg) will be widespread, and the restoration of contaminated areas has become an urgent issue. ing.
従来、重金属や放射性物質で汚染された土壌の浄化について種々検討がなされ、例えば、重金属汚染土壌の浄化には、種々の薬剤を用いて、重金属含有土壌から重金属を溶出させて除去することにより、汚染土壌を浄化する方法が検討され、それに用いられる土壌攪拌装置なども検討されている（例えば、特許文献１）。 Conventionally, various studies have been made on the purification of soil contaminated with heavy metals and radioactive substances.For example, for purification of heavy metal-contaminated soil, various agents are used to elute and remove heavy metals from the soil containing heavy metals. A method for purifying contaminated soil has been studied, and a soil agitation apparatus used for the method has also been studied (for example, Patent Document 1).
一方、放射性物質汚染土壌については、放射性物質が、主に土壌の最表面に集積していることから、汚染土壌の表面のみを処理することにより、土壌を浄化することが検討されており、土壌表面を効率良く攪拌することが可能な土壌攪拌装置が求められている。 On the other hand, for radioactive material-contaminated soil, since radioactive materials are mainly accumulated on the outermost surface of the soil, it has been studied to purify the soil by treating only the surface of the contaminated soil. There is a need for a soil agitator that can efficiently agitate the surface.
従って、本発明の目的は、放射性物質汚染土壌などを浄化するため、土壌表面を効率良く攪拌することが可能な土壌攪拌装置を提供することにある。 Accordingly, an object of the present invention is to provide a soil agitating device capable of efficiently agitating the soil surface in order to purify radioactive material contaminated soil and the like.
すなわち、本発明は、土壌に水を導入し、当該水と土壌表面を攪拌して表面土壌を水中に懸濁状態にするための土壌攪拌機構であって、水平方向に延設された回転軸と、回転軸を中心として設置された円筒ドラムと、土壌方向に開口部を有し円筒ドラムと一定の隙間を有して設置された円筒ドラムカバーとを備えることを特徴とする土壌攪拌機構を提供するものである。
また、本発明は、当該土壌攪拌機構と、これを牽引する牽引装置とで構成され、牽引装置の走行部駆動方式が、接地圧０．１５kg／cm2以下のクローラーである土壌攪拌装置を提供するものである。
That is, the present invention is a soil stirring mechanism for introducing water into soil, stirring the water and the soil surface to make the surface soil suspended in water, and a rotating shaft extending in the horizontal direction. A soil agitation mechanism comprising: a cylindrical drum installed around a rotation axis; and a cylindrical drum cover having an opening in the soil direction and a fixed clearance from the cylindrical drum. It is to provide.
In addition, the present invention provides a soil agitation device that includes the soil agitation mechanism and a traction device that pulls the soil agitation mechanism, and the traveling unit drive system of the traction device is a crawler with a ground pressure of 0.15 kg /
本発明の土壌攪拌機構及び土壌攪拌装置は、土壌表面を効率良く攪拌することができ、これを用いれば、放射性物質汚染土壌などを、効率良く浄化することができる。その場合には、土壌表面のみを攪拌するため、作土全体に対する最終的な土壌損失量が少なく、浄化処理に伴う土壌排出量を抑制することができる。 The soil agitation mechanism and the soil agitation apparatus of the present invention can efficiently agitate the soil surface, and if this is used, radioactive material-contaminated soil can be efficiently purified. In that case, since only the soil surface is stirred, the final amount of soil loss with respect to the entire soil is small, and the amount of soil discharged due to the purification treatment can be suppressed.
本発明の土壌攪拌機構は、土壌に水を導入し、当該水と土壌表面を攪拌して表面土壌を水中に懸濁状態にするために用いられる。
本発明の土壌攪拌機構は、例えば、図２に示すような、水平方向に延設された回転軸と、回転軸を中心として設置された円筒ドラムを備える。円筒ドラムは、外周面に複数の突起状部材を有することができる。かかる突起状部材の形状や大きさは特に制限されないが、形状としては、直方体、三角柱等が好ましく、高さ５cm以下、特に２cm以下であるのが、攪拌を効率良く行うことができるので好ましい。
The soil agitation mechanism of the present invention is used to introduce water into soil, agitate the water and the soil surface, and make the surface soil suspended in water.
The soil stirring mechanism of the present invention includes, for example, a rotating shaft extending in the horizontal direction and a cylindrical drum installed around the rotating shaft as shown in FIG. The cylindrical drum can have a plurality of protruding members on the outer peripheral surface. The shape and size of the protruding member are not particularly limited, but the shape is preferably a rectangular parallelepiped, a triangular prism or the like, and the height is preferably 5 cm or less, particularly 2 cm or less because stirring can be performed efficiently.
また、円筒ドラムは、外周面の一部に開口部を設けることもでき、例えば、回転軸に並行に一定間隔になるような開口部を設けることもできる。この場合には、ドラム内部でも、土壌と水を攪拌することができる。
円筒ドラムの回転半径は、１０cm以上、特に１５〜３０cmであるのが、ドラム円弧と土壌の接点が広がり、攪拌効率が高まるので好ましい。
In addition, the cylindrical drum can be provided with an opening at a part of the outer peripheral surface, and for example, an opening can be provided at a constant interval in parallel with the rotation axis. In this case, soil and water can be stirred even inside the drum.
The rotation radius of the cylindrical drum is preferably 10 cm or more, particularly 15 to 30 cm because the contact point between the drum arc and the soil spreads and the stirring efficiency increases.
また、本発明の土壌攪拌機構は、上記のような円筒ドラムとともに、土壌方向に開口部を有し円筒ドラムと一定の隙間を有して設置された円筒ドラムカバーを備える。
円筒ドラムカバーは、例えば、図１及び図３に示したように、土壌方向の開口部を除き、円筒ドラムの全体を覆うように設置される。円筒ドラムと円筒ドラムカバーの間の隙間は、円筒ドラム外周面に突起状部材を配備した場合、突起状部材の高さの１．５〜３倍の間隔であるのが好ましい。
円筒ドラムと円筒ドラムカバーの間の隙間では、回転する円筒ドラムにより持ち上げられた土壌と水が攪拌され、円筒ドラムの表面でスラリー化される。その攪拌を効率良く行うため、円筒ドラムの回転数は、６０〜１２０rpm、特に８０〜１００rpmであるのが好ましい。
Moreover, the soil stirring mechanism of this invention is provided with the cylindrical drum cover which has the opening part in the soil direction and was installed with a certain clearance gap with the cylindrical drum with the above cylindrical drums.
For example, as shown in FIGS. 1 and 3, the cylindrical drum cover is installed so as to cover the entire cylindrical drum except for the opening in the soil direction. The gap between the cylindrical drum and the cylindrical drum cover is preferably 1.5 to 3 times the height of the protruding member when the protruding member is provided on the outer peripheral surface of the cylindrical drum.
In the gap between the cylindrical drum and the cylindrical drum cover, the soil and water lifted by the rotating cylindrical drum are stirred and slurried on the surface of the cylindrical drum. In order to efficiently perform the stirring, the rotational speed of the cylindrical drum is preferably 60 to 120 rpm, particularly 80 to 100 rpm.
また、円筒ドラムカバーは、進行方向の後ろ側に、当該カバーに連結しかつ混合された土壌スラリーを排出する開口部を有するボックス（攪拌ボックス）を有することができ、攪拌効果をより高めることができる。このボックスは、土壌と水を攪拌するためのものであり、そのための空間を備えていれば、大きさや形状等は特に制限されるものではない。更に、当該ボックス内には、土壌と水を混合させるための攪拌羽等の攪拌機を設置することもできる（図４及び５）。 Further, the cylindrical drum cover can have a box (stirring box) having an opening connected to the cover and for discharging the mixed soil slurry on the rear side in the traveling direction, thereby further enhancing the stirring effect. it can. This box is for stirring the soil and water, and the size, shape, etc. are not particularly limited as long as a space is provided for this purpose. Furthermore, a stirrer such as a stirring blade for mixing the soil and water can be installed in the box (FIGS. 4 and 5).
本発明の土壌攪拌機構は、例えば、図１に示すように、更に、底部と接地するガイドプレートを有することができる。かかるガイドプレートを有することにより、土壌攪拌機構がスムーズに走行できるとともに、土壌に含まれる石などをかみ込まないようにすることができる。
ガイドプレートは、円筒ドラムカバーの底部の開口部の一部に設置することができる。
For example, as shown in FIG. 1, the soil stirring mechanism of the present invention can further include a guide plate that contacts the bottom. By having such a guide plate, the soil agitation mechanism can run smoothly and stones and the like contained in the soil can be prevented from being bitten.
The guide plate can be installed in a part of the opening at the bottom of the cylindrical drum cover.
本発明の土壌攪拌装置は、上記のような土壌攪拌機構と、当該土壌攪拌機構を牽引するための牽引装置で構成される（例えば、図１、図４）。
牽引装置の走行部駆動方式は、クローラーであり、接地圧０．１５kg／cm2以下、特に０．０８〜０．１kg／cm2のゴムクローラーが、水田土壌や軟弱な土壌でも攪拌装置が沈み込まず、一定の速度で攪拌することができるので好ましい。
The soil agitation device of the present invention includes the above-described soil agitation mechanism and a traction device for towing the soil agitation mechanism (for example, FIGS. 1 and 4).
Running portion driving method of the traction device is a crawler contact pressure 0.15 kg / cm 2 or less, particularly rubber crawler 0.08~0.1kg / cm 2 is also sinking stirrer in paddy soil or soft soil This is preferable because it can be stirred at a constant speed.
本発明の土壌攪拌装置は、例えば、放射性物質が土壌の最表面（０−２cm程度）に集積している放射性物質汚染土壌において、水と土壌表面を攪拌して表面土壌を水中に懸濁状態にするのに好適に用いることができる。
導入される水は、土壌表面からの水深が５cm以上、特に５〜２０cm、更に１０〜２０cmとなるのが好ましい。水がこのような深さに導入されると、土壌粒子が分散できる水厚を確保し、攪拌後に、土壌を粒径別に分級して粗粒子画分を沈降させ、細粒子画分を除去するのに好ましい。
また、本発明の攪拌機構は、土壌表面、特に土壌表面から５cm以下、更に１〜５cm程度の土壌を攪拌するのに好適である。
The soil agitation apparatus of the present invention is, for example, a radioactive substance-contaminated soil in which radioactive substances are accumulated on the outermost surface (about 0-2 cm) of the soil. It can be used suitably for making.
The water to be introduced preferably has a depth of 5 cm or more, particularly 5 to 20 cm, more preferably 10 to 20 cm from the soil surface. When water is introduced at such a depth, the water thickness that can disperse the soil particles is secured, and after stirring, the soil is classified by particle size to settle the coarse particle fraction and remove the fine particle fraction. Is preferable.
In addition, the stirring mechanism of the present invention is suitable for stirring the soil surface, particularly 5 cm or less, and further about 1 to 5 cm from the soil surface.
土壌表面を攪拌することにより、土壌粒子を水中に分散させ、懸濁状態とした後、放置して、土壌を粒径別に分級させる。この間に、土壌粒子のうち、粗粒子画分の粒子が土壌表面に沈降する。このような粗粒子は、放射性物質含量が低いため、そのまま土壌に戻すとともに、放射性物質含量の高い細粒子画分のみを除去することにより、土壌損失量を低減することができる。細粒子画分が、細粒子画分を含む土壌懸濁液である場合には、それを排水すれば良い。
このように土壌表面のみを処理することができれば、放射性物質汚染土壌を、効率良く除去することができる。
By stirring the soil surface, the soil particles are dispersed in water and suspended, and then left to classify the soil according to particle size. During this time, of the soil particles, the coarse particle fraction particles settle on the soil surface. Since such coarse particles have a low radioactive substance content, the amount of soil loss can be reduced by returning to the soil as it is and removing only the fine particle fraction having a high radioactive substance content. When the fine particle fraction is a soil suspension containing the fine particle fraction, it may be drained.
If only the soil surface can be treated in this way, radioactive material-contaminated soil can be efficiently removed.
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| JP2011196697A JP5884114B2 (en) | 2011-09-09 | 2011-09-09 | Soil agitator |
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| JP5924572B2 (en) * | 2011-12-02 | 2016-05-25 | 国立研究開発法人農業環境技術研究所 | Decontamination method for radioactively contaminated soil |
| CN107014665B (en) * | 2017-04-13 | 2023-03-17 | 河南师范大学 | Processing apparatus of soil is used in laboratory |
| CN108405601A (en) * | 2018-05-22 | 2018-08-17 | 李腾辉 | A kind of soil remediation medicament sowing apparatus |
| CN110898935A (en) * | 2019-11-11 | 2020-03-24 | 长沙市天珍科技有限公司 | Soil breaker for agricultural research |
| CN111247893B (en) * | 2019-12-17 | 2022-12-23 | 皖西学院 | Harmful substance degradation device of pesticide contaminated soil |
| CN113522947B (en) * | 2021-07-22 | 2022-04-08 | 苏州园科生态建设集团有限公司 | Soil remediation device for honeycomb cellular rainwater garden |
| CN115318822B (en) * | 2022-08-12 | 2023-10-03 | 生态环境部南京环境科学研究所 | Device and method for repairing cadmium-polluted soil |
| CN115443746A (en) * | 2022-08-19 | 2022-12-09 | 贵州省山地资源研究所 | Device and method for efficiently degrading soil micro-plastics |
| JP7203272B1 (en) | 2022-09-14 | 2023-01-12 | 埼玉八栄工業株式会社 | soil agitation machine |
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| JP2002180451A (en) * | 2000-12-14 | 2002-06-26 | Taihei Kogyo Co Ltd | Dust suppressing construction method in soil improvement |
| JP2002209502A (en) * | 2001-01-19 | 2002-07-30 | Kumiai Chem Ind Co Ltd | Method for scattering agrochemical and device therefor |
| JP2005280646A (en) * | 2004-03-31 | 2005-10-13 | Yanmar Co Ltd | Farm working machinery |
| JP5213209B2 (en) * | 2006-05-31 | 2013-06-19 | 独立行政法人農業環境技術研究所 | Soil agitator |
| JP5289901B2 (en) * | 2008-11-13 | 2013-09-11 | 三菱農機株式会社 | Walking type mobile farm machine |
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |