JP2017144598A

JP2017144598A - Apparatus and method for atomization of bamboo

Info

Publication number: JP2017144598A
Application number: JP2016026901A
Authority: JP
Inventors: 貢菅澤; Mitsugi Sugasawa
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2016-02-16
Filing date: 2016-02-16
Publication date: 2017-08-24
Anticipated expiration: 2036-02-16
Also published as: JP6420780B2

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and method for atomization of bamboo capable of suppressing a short lifetime of a blade even when atomizing the bamboo by solving problems in which the lifetime of the blade of a normal chipper is 100 hours or more in general wood but 24-30 hours in the bamboo and is extremely short, however, the replacement by 24 hours needs replacement work of the blade substantially every day and continuous operation cannot be made, and also, the cost of the blade itself is increased and the cost is increased.SOLUTION: An apparatus for atomization of bamboo includes a chipper 11 for cutting strip-shaped bamboo 3, and a bamboo opening device 9 being an arrangement device for arranging the strip-shaped bamboo 3 introduced into the chipper 11 so that the inside and outside may be directed in the same direction. In the apparatus, the blade of the chipper is arranged in an inclined manner. Also, as a method for atomization of the bamboo, the strip-shaped bamboo is arranged so that the inside and outside may be directed in the same direction, and the blade is made to get in the bamboo always from the inside to thereby cut the bamboo so as to be torn off by an inclined blade.SELECTED DRAWING: Figure 2

Description

竹を粉砕し、肥料化又は竹炭による活性炭、改質などのために竹を微粒化する装置や方法に関する。 The present invention relates to an apparatus and a method for pulverizing bamboo and atomizing bamboo for fertilization, activated carbon using bamboo charcoal, or modification.

竹の肥料化や活性炭として竹を炭にする場合、細粒化する必要があり、チッパーと呼ばれる装置が使用される。目的、用途に応じその細粒化するサイズをチッパー内部のスクリーンの孔サイズで変えている。 When bamboo is made into charcoal as fertilizer or activated carbon, it is necessary to make it finer and a device called a chipper is used. Depending on the purpose and application, the size of the fine particles is changed by the hole size of the screen inside the chipper.

しかし、一般木材であれば100時間以上ある通常のチッパーの刃の寿命は、竹の場合２４−３０時間であり、極めて短い。 However, the life of a normal chipper blade that is 100 hours or more in the case of general wood is 24 to 30 hours in the case of bamboo, which is extremely short.

特開２０１３−１５４５８８号公報JP 2013-154588 A

しかし、２４時間で交換では、ほぼ毎日刃の交換作業が必要となり、連続運転が出来ない。また、刃自体の費用もかさんでしまい費用が増大する。 However, when replacing in 24 hours, the blade needs to be replaced almost every day, and continuous operation is not possible. In addition, the cost of the blade itself increases and the cost increases.

これに対し本発明は、竹を微粒化する際にも刃の短寿命化を抑制できる、竹の微粒化装置および微粒化方法を提供することを目的とする。 On the other hand, an object of this invention is to provide the atomization apparatus and atomization method of a bamboo which can suppress the shortening of the lifetime of a blade also when atomizing bamboo.

本発明の竹の微粒化装置は、短冊状の竹を裁断するチッパーと、前記チッパーに導入される前記短冊状の竹を、内側と外側が同じ方向を向くように配置させる配置装置を備え、前記チッパーの刃が傾斜して配置される。また本発明の竹の微粒化方法は、短冊状の竹を内側と外側が同じ方向を向くように並べ、常に内側から刃が入るようにし、傾斜刃により引き切るように竹を裁断する。 The bamboo atomization apparatus of the present invention comprises a chipper for cutting a strip-shaped bamboo, and an arrangement device for arranging the strip-shaped bamboo introduced into the chipper so that the inner side and the outer side face the same direction, The tipper blades are arranged to be inclined. In the method for atomizing bamboo according to the present invention, strip-shaped bamboos are arranged so that the inner side and the outer side face in the same direction, the blades are always inserted from the inner side, and the bamboos are cut so as to be cut by the inclined blades.

竹を微粒化する際にも刃の短寿命化を抑制できる、竹の微粒化装置および微粒化方法を提供できる。 It is possible to provide a bamboo atomization apparatus and atomization method capable of suppressing the shortening of the blade life even when the bamboo is atomized.

チッパーを示す。Shows chipper. 竹の微粒化装置を示す。A bamboo atomization device is shown. 竹開き装置詳細を示す。The details of the bamboo opening device are shown. 試験刃の取り付け状況を示す。The test blade installation status is shown. 刃磨耗試験結果（竹形状のまま）を示す。The blade wear test results (as in the bamboo shape) are shown. 刃磨耗試験結果（短冊刃の初期あたり面竹内側）を示す。The blade wear test results (the inner surface of the strip blade per initial stage) are shown. 刃磨耗試験結果（短冊刃の初期あたり面竹外側）を示す。The blade wear test results (the outer surface of the strip per side of the strip blade) are shown. 刃打痕の一例を示す。An example of a blade dent is shown. 刃メクレとメカニズムを示す。The blade mechanism and mechanism are shown. 竹端内部及び表面に付着している泥類を示す。Indicates mud adhering to the inside and surface of the bamboo end. 乾燥竹から出た竹水を示す。Shows bamboo water from dried bamboo. スクリーン詰まりを示す。Indicates screen clogging.

竹は表面が硬いため、チッパーの刃は竹の裁断に用いると短時間で磨耗し、使用出来なくなるといわれてきた。この刃の交換には費用が掛かると共に、交換するには装置を停止する必要があり、稼働率が低下する問題がある。刃の寿命が短くなる原因としては、竹表面にはシリカの多い層があり、この硬い部分に刃があたることで、刃先端の金属磨耗が進行すると一般的にはいわれている。 Since bamboo has a hard surface, it has been said that chipper blades wear out in a short time when used for cutting bamboo and cannot be used. The replacement of the blades is expensive, and it is necessary to stop the apparatus for replacement, resulting in a problem that the operating rate is lowered. As a cause of shortening of the blade life, it is generally said that there is a layer with a lot of silica on the bamboo surface, and that the blade is hit against this hard part, so that metal wear of the blade tip proceeds.

しかし、２４時間で交換しなければいけないとなるとほぼ毎日刃の交換作業が必要となり、連続運転が出来ず、稼働率が低くなってしまう上に、刃自体の価格も高いことで費用が増大する。 However, if it must be replaced in 24 hours, it is necessary to replace the blade almost every day, and continuous operation cannot be performed, the operating rate is lowered, and the price of the blade itself is high, which increases the cost. .

この様な課題の下、発明者は、通常のこぎりで切る際に竹と木材で大幅な違いを経験したことが無いことに着目し、通説を疑って検討を進めた。その過程で、竹表面に固い層があると云っても、磨耗は別の原因と考え、チッパーの粉砕原理と竹の持つ特性について考察を深めた。その結果、次の３段階の作用により刃の摩耗が促進されているとの結論を得た。 Under such a problem, the inventors focused on the fact that they had never experienced a significant difference between bamboo and wood when cutting with a normal saw, and proceeded with a study by suspecting a common theory. In the process, even though there was a hard layer on the bamboo surface, we thought that wear was another cause, and deepened the consideration of the chipper's grinding principle and the characteristics of bamboo. As a result, it was concluded that blade wear was promoted by the following three stages of action.

（i）チッパー刃が竹に当たった場合、円筒状の竹は変形する。（ii）この変形により竹は刃から逃げようとするため、刃は竹表面を滑るような動きとなる。（iii）このため刃には竹表面で摩擦力が発生し、この摩擦力が磨耗を促進する。 (I) When the chipper blade hits the bamboo, the cylindrical bamboo is deformed. (Ii) This deformation causes the bamboo to escape from the blade, so that the blade moves like sliding on the bamboo surface. (Iii) Therefore, a frictional force is generated on the surface of the bamboo on the blade, and this frictional force promotes wear.

以下説明する本発明の実施例は、刃の摩耗を抑制するため、上記結論に基づき以下の解決策を盛り込んでいる。 The embodiment of the present invention to be described below incorporates the following solutions based on the above conclusion in order to suppress blade wear.

（１）竹を円筒状の原型から縦方向に割り、２個以上の短冊状に加工する。（２）短冊状にした竹は最初に刃に当たる面を竹の内面側となるようにする。これにより竹表面の滑りやすい箇所は避けて、できるだけ刃が滑らないようにする。（３）更に好ましくは、刃にあたり粉砕する衝撃で短冊が移動し、刃のすべりと同様の動作とならないようダブルのローラで押さえる。１個のローラではテコの原理のような動きが発生する可能性があり、２個以上のローラをもちいればそれを回避することができる。 (1) Bamboo is vertically divided from a cylindrical prototype and processed into two or more strips. (2) For bamboo made into strips, the surface that first contacts the blade should be the inner surface of the bamboo. This avoids slippery areas on the bamboo surface and keeps the blade from slipping as much as possible. (3) More preferably, the strip is moved by the impact of pulverizing the blade, and is pressed by a double roller so as not to operate in the same manner as the sliding of the blade. A single roller may cause a movement similar to the lever principle, which can be avoided by using two or more rollers.

なお、特許文献１にも[０００５]に、刃物寿命が約４０時間と短いのも問題、との記載がある。ただしこの問題が解決する方法は明記されていない。特許文献１の段落[００４４]では、特に竹材の輪切りとチップ化を連続的に行えることで、従来のように複数の装置や機材を用いて竹材から竹チップを得る方法と比べ、大幅に省力化して効率よく竹チップを生産できるようになる、と説明されてはいるが、これがどのように刃物寿命に影響するかは記載されていない。 In addition, Patent Document 1 also describes that [0005] has a problem that the tool life is as short as about 40 hours. However, it does not specify how to solve this problem. Paragraph [0044] of Patent Document 1 can save labor significantly compared to the conventional method of obtaining bamboo chips from bamboo by using a plurality of devices and equipment as a result of continuous cutting and chipping of bamboo. Although it is explained that it will be possible to produce bamboo chips efficiently, it is not described how this affects the tool life.

まず図１を用い、チッパーの例を説明する。チッパー１１は内部にチッパー刃１が高速回転し、竹材３が送りローラ２でチッパー１１内部に送られるとチッパー刃１が竹材３に当たり、竹を削ぎ取る。削ぎ取られた竹はチッパー１１内部で再度刃に当たるなどして細粒化される。チッパー１１下部にはスクリーン４があり、細粒化されスクリーン４のサイズ以下になった竹は外部に排出される。 First, an example of a chipper will be described with reference to FIG. When the chipper blade 1 is rotated at high speed inside the chipper 11 and the bamboo material 3 is fed into the chipper 11 by the feed roller 2, the chipper blade 1 hits the bamboo material 3 and scrapes off the bamboo. The cut bamboo is finely divided by hitting the blade again inside the chipper 11. There is a screen 4 at the bottom of the chipper 11, and the bamboo that has been made finer and smaller than the size of the screen 4 is discharged to the outside.

しかし、竹は円筒状の形状で内部が空洞であることから、竹材３（変形前）の状態でチッパー刃１が当たるとほぼ真円の形状が、圧縮力を受けて楕円の断面に変形し、竹材変形後５の状態となる。また、縦方向に割られた短冊状の竹であっても、外側からチッパー１の刃をあてようとすると同様な変形が起こる。短冊状の竹にも断面は曲面で弾力があり、かつ変形代があるためである。 However, since bamboo has a cylindrical shape and a hollow interior, when the chipper blade 1 hits the bamboo material 3 (before deformation), the substantially circular shape is deformed into an elliptical cross section under compression force. Then, after the bamboo material deformation, it becomes a state of 5. Moreover, even if it is a strip-shaped bamboo cracked in the vertical direction, if the tip of the chipper 1 is applied from the outside, the same deformation occurs. This is because the strip-shaped bamboo has a curved cross section, is elastic, and has a deformation allowance.

この変形に対し、チッパー刃１は回転軸に固定されているので竹が圧縮変形した分、刃の滑り量６として示した距離分だけ、刃の滑りが発生する。この滑りによる摩擦力により、竹を微粒化する場合のチッパー刃１の磨耗が、一般的な木材の微粒化に比べ、極めて早くなってしまっている。 In response to this deformation, since the chipper blade 1 is fixed to the rotating shaft, the blade slips by the distance indicated as the blade slip amount 6 as the bamboo is compressed and deformed. Due to the frictional force due to the sliding, the wear of the chipper blade 1 in the case of atomizing bamboo has become extremely fast compared to the atomization of general wood.

この解決方法としての前処理の例を、図２を用いて説明する。図２は実施例である竹の微粒化装置を示している。 An example of preprocessing as a solution will be described with reference to FIG. FIG. 2 shows an embodiment of a bamboo atomization apparatus.

まず竹材３は、油圧シリンダー７により竹割り装置８へと送られる。 First, the bamboo material 3 is sent to the bamboo splitting device 8 by the hydraulic cylinder 7.

竹割り装置８は内部に何本かの刃があり（図２で示した例では８本）、竹材３が竹割り装置８を通過しようとすると刃で竹は割られて短冊上に何枚かの板となる。また竹割り装置８の中央は竹の節を取り除けるよう円筒になっている。 The bamboo splitting device 8 has several blades inside (eight in the example shown in FIG. 2), and when the bamboo material 3 tries to pass through the bamboo splitting device 8, the bamboo is cracked by the blade and several pieces on the strip It becomes a board. The center of the bamboo splitting device 8 is cylindrical so that the bamboo knot can be removed.

竹割り装置８を通過した竹は、竹開き装置９により竹の内側が上に向いた方向で並べられる。 The bamboo that has passed through the bamboo splitting device 8 is arranged in a direction in which the inside of the bamboo faces upward by the bamboo opening device 9.

図３は本実施例の竹開き装置の詳細図を示す。図３の上の図は、竹開き装置の全体外観を、下の３つの図は、上図にて一点鎖線で示した位置の断面図である。 FIG. 3 shows a detailed view of the bamboo opening device of this embodiment. The upper drawing of FIG. 3 is an overall appearance of the bamboo opening device, and the lower three drawings are cross-sectional views of the position indicated by the alternate long and short dash line in the upper drawing.

竹開き装置９は、竹割り装置８で８分割に割られた竹を竹開き核１４に取り付けられた案内板１２で開く。竹開き装置９を進むに従い竹は徐々に内側を上部に向くかたちへと案内板１２と竹開き核１４により誘導される。 The bamboo opening device 9 opens the bamboo divided into eight parts by the bamboo splitting device 8 with the guide plate 12 attached to the bamboo opening core 14. As the bamboo opening device 9 proceeds, the bamboo is gradually guided by the guide plate 12 and the bamboo opening core 14 toward the upper side.

また上部に位置する竹を下流へと徐々に案内して行く過程では短冊状の竹が反転する可能性もある。これに対処するために反転防止版１３を取り付け、竹が回転できないよう竹開き核１４と反転防止板１３の間隔を狭くしている。 Also, in the process of gradually guiding the bamboo located at the upper part to the downstream, the strip-shaped bamboo may be reversed. In order to cope with this, the inversion prevention plate 13 is attached, and the interval between the bamboo opening core 14 and the inversion prevention plate 13 is narrowed so that the bamboo cannot rotate.

内側が上向きになった短冊状の竹は、ダブルローラ１０へと送られ、チッパー１１へと送られる。 The strip-shaped bamboo with the inside facing upward is sent to the double roller 10 and sent to the chipper 11.

ダブルローラ１０は回転しながら竹をチッパー１１へと送る役割と、２点で竹を支持することでチッパー刃１が竹に当たった際に衝撃で竹が移動することを防止している。竹が移動するとチッパー刃１の滑りが発生し、竹が変形しなくても刃の磨耗が発生するため、２点で支持することで移動することを防止している。 The double roller 10 serves to feed the bamboo to the chipper 11 while rotating, and supports the bamboo at two points to prevent the bamboo from moving due to impact when the chipper blade 1 hits the bamboo. When the bamboo moves, the chipper blade 1 slips, and even if the bamboo is not deformed, the blade is worn. Therefore, it is prevented from moving by being supported at two points.

竹は内面に多孔質の層があり、表面に比べ柔らかいことで、チッパー刃１はスムースに竹に切り込み、すべることなく細粒化できる。 Bamboo has a porous layer on the inner surface and is softer than the surface, so that the chipper blade 1 can be smoothly cut into the bamboo and made fine without slipping.

以上説明した本実施例の竹の微粒化装置は、短冊状の竹を裁断するチッパー１１と、竹を短冊状に割る竹割り装置８と、竹割り装置８で割られた竹を内側と外側が同じ方向を向くように配置させる竹開き装置９を備えている。特に竹開き装置のような、竹の内側が上を向くように配置させる配置装置を備えることで、竹を微粒化する際にも刃の短寿命化を抑制できる。さらに、チッパー１１で裁断される際の衝撃による短冊状の竹の移動を抑制する竹移動抑制装置であるダブルローラ１０を備えているため、さらに刃の短寿命化を抑制できる。 The bamboo atomization apparatus of the present embodiment described above includes a chipper 11 for cutting a strip-shaped bamboo, a bamboo splitting device 8 for splitting the bamboo into strips, and a bamboo split by the bamboo splitting device 8 on the inside and the outside. Are provided so as to be oriented in the same direction. By providing an arrangement device that arranges the bamboo so that the inside of the bamboo faces upward, such as a bamboo opening device, it is possible to suppress the shortening of the blade life even when the bamboo is atomized. Furthermore, since the double roller 10 which is a bamboo movement suppression apparatus which suppresses the movement of the strip-like bamboo by the impact at the time of cutting with the chipper 11 is provided, the life shortening of the blade can be further suppressed.

ここでいう竹の内側とは、筒状の竹の半径方向内周側を意味し、外側とは、直立に生えている竹の外面から確認できる緑色の表面側を意味する。また、内側と外側が同じ方向を向くとは、短冊状の竹が全て表なら表、全て裏なら裏になるように揃えられたうえで、チッパーに導入されることを意味する。また短冊状の竹とは、文字通り長方形の竹に限られない。筒状の竹ではなく、これを割った状態の竹という意味である。 The inside of the bamboo here means the radially inner peripheral side of the cylindrical bamboo, and the outside means the green surface side that can be confirmed from the outer surface of the bamboo growing upright. Moreover, that the inside and the outside face in the same direction means that the strip-shaped bamboos are all arranged so that they are the front side if they are the front side and all the back side are the back side, and then introduced into the chipper. In addition, the strip-shaped bamboo is not limited to a rectangular bamboo. It means not bamboo in the shape of a cylinder, but bamboo in a state where it is broken.

なお上記実施例は、本発明の一例を示すものであるが、短冊状の竹を内側と外側が同じ方向を向くように並べ、常に内側から刃が入るように竹を裁断する竹の微粒化方法であれば、同様の効果が得られることはいうまでもない。より好ましくは、竹を短冊状に割り、
割られた竹を内側と外側が同じ方向を向くように並べ、竹の動きを抑えながら常に内側から刃が入るように竹を裁断するようにすれば、効率よく竹を微粒化することができる。 In addition, although the said Example shows an example of this invention, it arrange | positions strip-shaped bamboo so that an inner side and an outer side may face the same direction, and cuts a bamboo so that a blade may always enter from the inner side It goes without saying that the same effect can be obtained with the method. More preferably, bamboo is divided into strips,
If you arrange the cracked bamboo so that the inside and outside face in the same direction and cut the bamboo so that the blade always enters from the inside while suppressing the movement of the bamboo, you can efficiently atomize the bamboo .

ところで、竹を粉砕するチッパーの摩耗は一般的に竹表面にシリカ成分が濃密にあることで、短時間で刃の摩滅が発生し数時間又は２４時間程度で研ぎ直し又は刃の交換が必要となると言われている。このことからチッパーの刃はハスイ鋼と云われる高温耐摩耗鋼が使用されているが、本当にシリカが密となっての摩滅なのか確認試験を行い確認した。 By the way, the wear of the chipper that pulverizes bamboo is generally due to the dense silica component on the bamboo surface, so that the blade wears out in a short time, and it is necessary to sharpen or replace the blade in several hours or 24 hours. It is said to be. For this reason, the chipper blade is made of high-temperature wear-resistant steel called “Hasui Steel”, but a confirmation test was conducted to confirm whether the silica was really worn out.

短時間で刃の摩耗が判るように炭素鋼で刃を作成した。また、現状の水平刃では竹に対してほぼ直角に刃を当てることになり、切ると云う動作ではなく押し潰す方向となっていることに着目し、刃に角度をつけて引き切る動作になるようにすれば、摩滅が抑制できるという知見に想到した。この動作を確認するため、２０度、４０度の傾斜刃を作成した。傾斜刃の角度は、刃の進行方向に垂直な直線を基準とした角度である。更に試験としては竹を何も事前加工しない状態と短冊状にして竹の内側から刃が入り状態及び外側から歯の入る状態でそれぞれ確認を実施した。図４にそれぞれの刃取り付け状況を示す。 The blade was made of carbon steel so that the wear of the blade could be understood in a short time. In addition, with the current horizontal blade, the blade is applied at a substantially right angle to the bamboo, and attention is given to the direction of crushing rather than the operation of cutting, so that the blade is pulled at an angle. This led to the finding that wear can be suppressed. In order to confirm this operation, inclined blades of 20 degrees and 40 degrees were created. The angle of the inclined blade is an angle based on a straight line perpendicular to the moving direction of the blade. Furthermore, as a test, confirmation was carried out in a state in which no bamboo was pre-processed and in a strip shape with a blade from the inside of the bamboo and a tooth from the outside. FIG. 4 shows each blade attachment situation.

図５、６、７に摩耗測定結果を示す。結果は刃の長さ方向に３点の幅測定と打痕数で評価した。竹そのままの形状では、竹水のある竹が入るとスクリーンが詰まる場合があるため、スクリーンは取り付けず実施した。どの条件であっても竹の打痕は竹形状と同じものは無く、細かな打痕であった。また使用していない反対側の刃面にも打痕があることもあり、この原因は竹に付着している泥類によるものと推定される。図８に、刃打痕の一例を示す。 5, 6 and 7 show the results of wear measurement. The results were evaluated by measuring the width at three points and the number of dents in the length direction of the blade. In the shape of the bamboo as it is, the screen may become clogged when bamboo with bamboo water enters, so the screen was not attached. Under any condition, the bamboo dents were not the same as the bamboo shape, and were fine dents. In addition, there may be dents on the opposite blade surface that is not used, and this is presumed to be due to mud adhering to the bamboo. FIG. 8 shows an example of the blade dent.

竹を切り剪定、定尺に加工するのは竹林内であり無造作に置かれた竹の表面及び端の内部に泥が付着する。図１０に付着した泥類の一例を示す。 Bamboo is cut and pruned and processed into a standard length in the bamboo forest, and mud adheres to the surface of the bamboo and the edges of the bamboo that is placed at random. An example of the mud adhering to FIG. 10 is shown.

また、竹は弾性体であり且つ表面は滑りやすいことから短冊で且つ外側の滑りやすい面に最初に刃が当たるような試験を実施した結果、刃の先端にメクレた状態が発生した。図９に刃メクレとメカニズムを示す。これは竹は弾性体であり変形する分、刃が竹表面で横滑りを発生し、炭素鋼の柔らかい刃では変形したものと推定される。これが硬い刃の場合欠損する可能性もある。 Further, since bamboo is an elastic body and the surface is slippery, a test was performed in which the blade first hits the strip and the outer slippery surface. As a result, a sharp state occurred at the tip of the blade. FIG. 9 shows the blade mechanism and mechanism. This is presumably because bamboo is an elastic body and deforms, so the blades slip sideways on the bamboo surface and carbon steel soft blades deform. If this is a hard blade, it may be lost.

刃の摩耗は、竹形状のままで２．５ｍの竹３９本粉砕した試験で、水平刃０．３ｍｍ、２０度刃０．１３ｍｍ、４０度刃０．４５ｍｍと、２０度刃が最も少ない結果であった。 The wear of the blade was the result of the test with 39 mm bamboo crushed with 2.5 m in the bamboo shape. Met.

一方、短冊状にし、竹内側より刃が当たる様にした条件での試験は162-171kgのそれぞれ確認、水平刃０．２ｍｍ、２０度刃０．１５ｍｍ、４０度刃０．９ｍｍであり、この条件でも２０度刃の摩耗が最も少ないとこを確認した。 On the other hand, the test under the condition that the strips were made to hit the blade from the inside of the bamboo was confirmed to be 162-171 kg, horizontal blade 0.2 mm, 20 degree blade 0.15 mm, 40 degree blade 0.9 mm. Even under the conditions, it was confirmed that the wear of the 20-degree blade was the least.

従って０度以上４０度以下の刃角度に最適点が存在し、試験結果では２０度であることがわかった。 Therefore, the optimum point exists at the blade angle of 0 degree or more and 40 degrees or less, and it was found from the test result that it is 20 degrees.

刃角度は２０度、水平、４０度の順で摩耗が多かった。２０度刃よりも４０度刃の方が摩耗が多かったのは、４０度刃の場合、刃と刃の間口が狭まり、竹の送りスピードが同一でも竹の送りが遅くなり、刃の衝撃回数が多くなる分摩耗が多くなったと考えられる。 The blade angle was 20 degrees, horizontal, and 40 degrees in order of wear. The 40-degree blade was more worn than the 20-degree blade. In the case of the 40-degree blade, the gap between the blades was narrowed, and the bamboo feed was slowed even when the bamboo feed speed was the same. It is considered that the wear increased due to the increase in.

この結果をふまえれば、刃の傾斜度は２０度を挟んだ、例えば１０度以上３０度以下が好ましいと考えられる。より好ましくは１５度以上２５度以下とするのがよい。 Based on this result, it is considered that the inclination of the blade is preferably 20 degrees or less, for example, 10 degrees or more and 30 degrees or less. More preferably, it is 15 degrees or more and 25 degrees or less.

また形状では刃の横滑りの無い短冊内側向きが最も摩耗が少ないことが確認された。 In addition, it was confirmed that the shape of the strip with no side-slip of the blade had the least wear in terms of shape.

更に試験時竹水によるスクリーン詰まりが発生した。一般には生竹を粉砕すると詰まりやすいと聴いていたが、詰まった竹を分析した結果７２％もの水分含有量となり、生竹ではありえない（＜６０％）水分であった。 Furthermore, screen clogging with bamboo water occurred during the test. In general, I heard that crushed raw bamboo tends to be clogged, but analysis of the stuffed bamboo revealed a moisture content of 72%, which was not possible with raw bamboo (<60%).

図１１に破砕試験中の竹水による水飛散写真を示すが、竹は数か月乾燥させ黄色に変色した竹であるが、図１２に示すようなスクリーン詰まりを発生した。 FIG. 11 shows a photograph of water splashed by bamboo water during the crushing test. Bamboo was dried for several months and turned yellow, but screen clogging as shown in FIG. 12 occurred.

この竹水によるスクリーン詰りに対しても竹を事前に短冊状に加工しておけば内部の水も排出されスクリーンの詰まりは無くなる。 If the bamboo is processed into a strip shape in advance for screen clogging with bamboo water, the water inside is also discharged and the clogging of the screen is eliminated.

１チッパー刃
２送りローラ
３竹材
４スクリーン
５竹材変形後
６刃の滑り量
７油圧シリンダー
８竹割り装置
９竹開き装置
１０ダブルローラ
１１チッパー
１２案内板
１３反転防止版
１４竹開き核 DESCRIPTION OF SYMBOLS 1 Chipper blade 2 Feed roller 3 Bamboo material 4 Screen 5 Bamboo material deformation 6 Blade sliding amount 7 Hydraulic cylinder 8 Bamboo splitting device 9 Bamboo opening device 10 Double roller 11 Chipper 12 Guide plate 13 Inversion prevention plate 14 Bamboo opening nucleus

Claims

短冊状の竹を裁断するチッパーと、
前記チッパーに導入される前記短冊状の竹を、内側と外側が同じ方向を向くように配置させる配置装置を備え、
前記チッパーの刃が傾斜して配置された竹の微粒化装置。 A chipper that cuts strip-shaped bamboo,
An arrangement device for arranging the strip-shaped bamboo introduced into the chipper so that the inside and the outside face in the same direction;
Bamboo atomization device in which the tipper blades are inclined.

前記チッパーで裁断される際の衝撃による前記短冊状の竹の移動を抑制する竹移動抑制装置を備えた請求項１の竹の微粒化装置。 The bamboo atomization apparatus of Claim 1 provided with the bamboo movement suppression apparatus which suppresses the movement of the said strip-shaped bamboo by the impact at the time of cutting with the said chipper.

前記竹移動抑制装置は、前記短冊状の竹を前記チッパーに送り込むローラである請求項２の竹の微粒化装置。 The bamboo atomization device according to claim 2, wherein the bamboo movement suppression device is a roller for feeding the strip-like bamboo into the chipper.

前記ローラを竹の進行方向に２本以上備えた請求項３の竹の微粒化装置。 The bamboo atomization apparatus according to claim 3, wherein two or more rollers are provided in the direction of bamboo movement.

竹を短冊状に割る竹割り装置と、前記竹割り装置で割られた竹を内側が上を向くように配置させる竹開き装置と、前記竹開き装置で配置された竹を前記チッパーに送り込む２本以上のローラを備えた請求項１の竹の微粒化装置。 A bamboo splitting device for splitting the bamboo into strips, a bamboo opening device for arranging the bamboo split by the bamboo splitting device so that the inside faces upward, and the bamboo placed by the bamboo opening device are fed into the chipper 2 The apparatus for atomizing bamboo according to claim 1, comprising at least two rollers.

前記チッパーは、竹を裁断するチッパー刃と、前記チッパー刃で裁断された竹のうち、所定のサイズ以下になった竹を通過させるスクリーンを備えた請求項１の竹の微粒化装置。 2. The bamboo atomization apparatus according to claim 1, wherein the chipper includes a chipper blade that cuts the bamboo, and a screen that passes the bamboo that is not larger than a predetermined size among the bamboos cut by the chipper blade. 3.

前記チッパーの刃の傾斜角が１０度以上３０度以下である請求項１の竹の微粒化装置。 The bamboo atomization apparatus according to claim 1, wherein an inclination angle of the chipper blade is 10 degrees or more and 30 degrees or less.

短冊状の竹を内側と外側が同じ方向を向くように並べ、常に内側から刃が入るようにし、傾斜刃により引き切るように竹を裁断する
竹の微粒化方法。 A method of atomizing bamboo, in which strips of bamboo are arranged so that the inside and outside face in the same direction, the blade is always inserted from the inside, and the bamboo is cut by a slanted blade.

竹を短冊状に割り、
割られた竹を内側と外側が同じ方向を向くように並べ、
竹の動きを抑えながら常に内側から刃が入るように竹を裁断する
請求項８の竹の微粒化方法。 Split bamboo into strips,
Arrange the cracked bamboo so that the inside and outside face in the same direction.
The method of atomizing bamboo according to claim 8, wherein the bamboo is cut so that the blade always enters from the inside while suppressing the movement of the bamboo.