JP5257837B2

JP5257837B2 - Circulating grain dryer

Info

Publication number: JP5257837B2
Application number: JP2008162872A
Authority: JP
Inventors: 悟佐々本; 直子川口; 利充服部; 克司杉本
Original assignee: Satake Corp
Current assignee: Satake Corp
Priority date: 2007-06-26
Filing date: 2008-06-23
Publication date: 2013-08-07
Anticipated expiration: 2028-06-23
Also published as: JP2009030960A

Description

本発明は、籾（もみ）や麦などの穀物を乾燥する循環式穀物乾燥機に係り、特に、穀物に混入した藁屑（わらくず）等の比較的大きい異物（夾雑物）を除去するものに関する。 The present invention relates to a circulation type grain dryer for drying grains such as rice grains and wheat, and in particular, removes relatively large foreign matters (contaminants) such as straw scraps mixed in grains. About.

従来、この種の循環式穀物乾燥機としては、例えば、特許文献１に開示されたものがある。特許文献１のものは、循環式穀物乾燥機における本体側部の位置に粒大選別機を配設し、循環中の原料穀物をこの回転選別網筒内に供給して夾雑物等の異物を選別除去し、選別後の原料穀物は本体内に還流するようにしたものである。 Conventionally, as this type of circulating grain dryer, there is one disclosed in Patent Document 1, for example. In Patent Document 1, a large grain sorter is disposed at the position of the main body side of the circulation type grain dryer, and the raw material grains in circulation are supplied into the rotating sorting net to remove foreign matters such as foreign matters. Sorted and removed, the raw material grain after sorting is returned to the main body.

特公平８−２２３８５号公報Japanese Patent Publication No. 8-22385

ところで、上記特許文献１のものには以下の問題点があった。すなわち、特許文献１のものは、原料穀物を上部横搬送手段の始端側から流下させて粒大選別機に供給するようにしてあるため、粒大選別機の配設位置が循環式穀物乾燥機の本体側部の位置となり、該本体側部に粒大選別機を配設するだけのスペースが必要である。このため、例えば、ミニライスセンター（共同乾燥調製施設）等で循環式穀物乾燥機を複数台並列して配置する際には、粒大選別機の幅面積分の余分な設置スペースを必要としてしまう。また、前記粒大選別機への原料供給量は、前記上部横搬送手段の始端側から流路切換えにより、昇降機の排出側に投擲（てき）排出された穀物の全量となっているため、粒大選別機は大量の穀物の処理が可能な大型タイプのものとなる。したがって、前記設置スペースがそれだけ余分に必要となる。
そこで、本発明は、上記問題点に鑑み、粒大選別機による余分な設置スペースを必要としない循環式穀物乾燥機を提供することを技術的課題とするものである。 By the way, the thing of the said patent document 1 had the following problems. That is, since the thing of patent document 1 is made to flow down from the starting end side of an upper horizontal conveyance means, and supplies it to a grain size sorter, the arrangement position of a grain size sorter is the circulation type grain dryer. It is necessary to have a space for arranging the grain size sorter on the side of the main body. For this reason, for example, when a plurality of circulation type grain dryers are arranged in parallel at a mini rice center (joint drying preparation facility) or the like, an extra installation space corresponding to the width area of the grain size sorter is required. In addition, since the raw material supply amount to the large grain sorter is the total amount of grain thrown into the discharge side of the elevator by switching the flow path from the starting end side of the upper horizontal conveying means, The large sorter is a large type capable of processing a large amount of grain. Accordingly, an extra space for the installation is required.
Therefore, in view of the above problems, the present invention has a technical problem to provide a circulation type grain dryer that does not require an extra installation space for a grain size sorter.

上記課題を解決するため、請求項１では、
穀物の貯留タンク部（2）と、
該貯留タンク部（2）から流下した穀物を熱風通風して乾燥する乾燥部（3）と、
該乾燥部（3）における穀物を排出する排出部（4）と、
該排出部（4）から排出された穀物をバケット式昇降機（5ａ）及び前記貯留タンク部（2）の上部の上部横搬送手段（5ｂ）を介して貯留タンク部（2）に還流する還流部（5）と、
該還流部（5）で移送中の穀物を回転選別網筒（21）に供給して穀粒よりも大きい異物を選別除去する粒大選別部（20）と、
穀物水分を測定する穀物水分測定部（33）と、
該穀物水分測定部（33）で測定された穀物水分値が設定水分値になるまで乾燥運転等の制御を行う制御部（32）と、
を備えた循環式穀物乾燥機（1）において、
前記粒大選別部（20）は、前記貯留タンク部（2）の上部に横設し、前記回転選別網筒（21）に穀物を供給する原料供給口（16a）を設け、前記原料供給口（16a）に、前記バケット式昇降機（5a）の排出側から投擲された穀物の一部を捕捉して供給する穀物捕捉供給部（36）を配設するとともに、前記回転選別網筒（21）を通過した穀物を貯留タンク部（2）に排出する穀物排出口（21a）を下部に配設する一方、異物を機外に排出する異物排出口（26）を前記回転選別網筒（21）の下流側に備える、という技術的手段を講じた。 In order to solve the above problem, in claim 1,
A grain storage tank (2);
A drying section (3) for drying the grain flowing down from the storage tank section (2) by blowing hot air;
A discharge section (4) for discharging grain in the drying section (3);
A reflux part for returning the grain discharged from the discharge part (4) to the storage tank part (2) via the bucket type elevator (5a) and the upper horizontal conveying means (5b) above the storage tank part (2) (5) and
A grain size sorting section (20) for feeding grains to the rotary sorting net cylinder (21) by sorting the grains being transferred in the reflux section (5) and removing foreign matters larger than the grains,
A grain moisture measuring unit (33) for measuring grain moisture;
A control unit (32) for controlling a drying operation or the like until the grain moisture value measured by the grain moisture measuring unit (33) reaches a set moisture value;
In the circulating grain dryer (1) with
The grain size selection part (20) is provided on the upper part of the storage tank part (2), and is provided with a raw material supply port (16a) for supplying grains to the rotary selection net tube (21), and the raw material supply port (16a) is provided with a grain catching and supplying section (36) for catching and supplying a part of the grain thrown from the discharge side of the bucket elevator (5a) , and the rotary sorting net (21) The grain outlet (21a) for discharging the grain that has passed through the storage tank (2) is disposed at the lower part, while the foreign substance outlet (26) for discharging foreign substances to the outside of the machine is provided in the rotary sorting net (21). Technical measures were taken to prepare for the downstream side.

請求項２により、前記粒大選別部（20）は、前記上部横搬送手段（5ｂ）に沿って横設し、前記穀物排出口（21a）の一部分を上部横搬送手段（5ｂ）に連通させるとよい。 According to claim 2, the grain size selection part (20) is installed along the upper horizontal conveying means (5b), and a part of the grain outlet (21a) is communicated with the upper horizontal conveying means (5b). Good.

請求項３により、前記異物排出口（26）を前記貯留タンク部（2）の上面から突設するとよい。 According to a third aspect of the present invention, the foreign matter discharge port (26) may be projected from the upper surface of the storage tank portion (2).

請求項４により、前記穀物捕捉供給部（36）は、前記穀物供給口（16a）の下縁部からバケット式昇降機（5ａ）側に上向き傾斜状に所定長さ寸法だけ延設し、投擲されてきた穀物の一部を前記穀物供給口（16a）に流下供給する穀物供給用傾斜板（36a）から構成するとよい。 According to claim 4, the grain catching and supplying section (36) extends from the lower edge of the grain supply port (16a) to the bucket elevator (5a) side by a predetermined length and is thrown into the bucket-type elevator (5a). It is preferable that a part of the cereal grains is composed of a grain supply inclined plate (36a) for flowing down to the grain supply port (16a).

請求項５により、前記穀物捕捉供給部（36）の一端にはバケット式昇降機（5ａ）から投擲された穀物を堰き止める穀物堰止板（36b）を設けるとよい。 According to a fifth aspect of the present invention, a grain damming plate (36b) for damming the grain thrown from the bucket type elevator (5a) may be provided at one end of the grain catching and supplying unit (36).

請求項６により、前記穀物供給口（16a）には、前記穀物供給口（16a）を開閉する穀物供給口開閉手段（37）を備えるとよい。 According to claim 6, the grain supply port (16a) may be provided with a grain supply port opening / closing means (37) for opening and closing the grain supply port (16a).

請求項７により、前記穀物供給口開閉手段（37）は、前記穀物供給口（16a）を開閉する開閉板（37ａ）と、該開閉板（37ａ）を回動させる回動部材（37b，37c，39）と、該回動部材（37b，37c，39）に回動駆動作用を与える切換バルブモータ（38）とからなり、該切換バルブモータ（38）は、前記制御部（32）からの駆動信号によって作動するようにするとよい。 According to claim 7, the grain supply port opening / closing means (37) includes an opening / closing plate (37a) for opening and closing the grain supply port (16a) and a rotating member (37b, 37c) for rotating the opening / closing plate (37a). , 39) and a switching valve motor (38) that gives a rotational driving action to the rotating members (37b, 37c, 39). The switching valve motor (38) is connected to the control unit (32). It may be activated by a drive signal.

請求項８により、前記制御部（32）は、穀物種類設定部（32a）を備え、該穀物種類設定部（32a）で設定された穀物種類に応じて切換バルブモータ（38）に駆動信号を出力するようにするとよい。 According to claim 8, the control unit (32) includes a grain type setting unit (32a), and sends a drive signal to the switching valve motor (38) according to the grain type set by the grain type setting unit (32a). It is good to output.

請求項９により、前記穀物供給用傾斜板（36a）には穀物落下口(36c)を形成し、前記穀物供給口（16a）に穀物を供給するときは穀物落下口(36c)を前記開閉板(37a)によって塞いで穀物を流下供給可能にし、一方、前記穀物供給口（16a）に穀物を供給しないときは、前記開閉板(37a)を回動させて穀物落下口(36c)を開状態にし、前記投擲されてきた穀物を穀物落下口(36c)から落下させるようにするとよい。 According to claim 9, the grain supply inclined plate (36a) is formed with a grain drop opening (36c), and when supplying the grain supply to the grain supply opening (16a), the grain drop opening (36c) is provided with the opening / closing plate. (37a) is used to allow the grain to flow down, and when the grain is not supplied to the grain supply port (16a), the opening and closing plate (37a) is rotated to open the grain drop port (36c). The thrown grain may be dropped from the grain drop opening (36c).

請求項１０により、前記貯留タンク部(2)の天板(2a)において、前記粒大選別部(20)の側方の近傍位置には外気取入口(2b)を配設するとよい。 According to claim 10, in the top plate (2a) of the storage tank section (2), an outside air inlet (2b) may be disposed at a position near the side of the grain size selection section (20).

請求項１１により、前記外気取入口(2b)は、天板(2a)において、前記粒大選別部(20)の側方の近傍位置の長手方向にわたって形成するとよい。 According to the eleventh aspect, the outside air inlet (2b) may be formed in the longitudinal direction of the top plate (2a) at a position near the side of the grain size selection section (20).

本発明の循環式穀物乾燥機によれば、バケット式昇降機の排出側機枠内でバケットから投擲された還流穀物の一部を捕捉・供給して、選別した穀物は貯留タンク部に還流する一方、異物は機外排出するようにした粒大選別部を、貯留タンク部の上部に横設したので、従来例のように循環式穀物乾燥機の側部に粒大選別部を設けるものに比べて当該側部の余分なスペースが不要であるため、例えば複数台の循環式穀物乾燥機を並設する際の設置スペースを小さくすることができる。また、従来例の粒大選別部への原料供給用又は還流用のシュート類も不要である。
さらに、前記粒大選別部は、バケットから投擲された還流穀物の一部の穀物量を処理できるものであればよいため、小型タイプ（少量処理）にすることができる。このため、農家の納屋等の設置スペースにおいて天井等の高さ方向に余分なスペースを必要とせず、従来と同じ広さの納屋等に循環式穀物乾燥機を設置することができ、また、小型タイプ（少量処理）であるため選別運転中における原料詰まり等のトラブル発生が減少し、選別精度もよい。
また、還流穀物の一部を捕捉・供給する穀物捕捉供給部には、穀物供給口開閉手段を備え、かつ、穀物品種等に応じて開閉できるようにしたので、必要に応じて穀物を供給して異物選別することができる。 According to the circulation type grain dryer of the present invention, a part of the returned grain thrown from the bucket is captured and supplied in the discharge side machine frame of the bucket type elevator, and the selected grain is returned to the storage tank part. Because the particle size sorting part that discharges foreign substances outside the machine is installed horizontally on the upper part of the storage tank part, compared with the conventional example where a grain size sorting part is provided on the side of the circulating grain dryer Therefore, an extra space on the side portion is not necessary, and therefore, for example, an installation space for arranging a plurality of circulating grain dryers in parallel can be reduced. In addition, chutes for supplying raw materials or refluxing to the conventional grain size sorting section are unnecessary.
Furthermore, since the said grain size selection part should just be able to process the amount of some grains of the reflux grain thrown from the bucket, it can be made into a small type (small amount processing). For this reason, there is no need for extra space in the height direction, such as the ceiling, in the installation space of a farm barn, etc., and a circulating grain dryer can be installed in a barn of the same size as the conventional one. Since it is a type (small amount processing), the occurrence of troubles such as clogging of raw materials during sorting operation is reduced, and sorting accuracy is good.
In addition, the grain capture and supply section that captures and supplies a part of the refluxed grain is equipped with a grain supply port opening and closing means, and can be opened and closed according to the grain variety, etc., so that grains can be supplied as needed. It is possible to sort out foreign matter.

本発明の循環式穀物乾燥機１は、穀物原料の貯留、乾燥、排出を行う本体部1ａと、該本体部1ａから排出された穀物を再度本体部1ａ内に還流するための還流部５とから構成してある（図１、図２、図３参照）。 The circulation type grain dryer 1 of the present invention includes a main body 1a for storing, drying and discharging grain raw materials, and a reflux section 5 for returning the grains discharged from the main body 1a to the main body 1a again. (See FIGS. 1, 2, and 3).

本体部1ａは、原料穀物を貯留（調質）する貯留タンク部２と、該貯留タンク部２から流下した原料穀物を熱風通風によって乾燥する乾燥部３と、該乾燥部３の穀物を機外に断続的に繰り出しながら排出する排出部４とを上方から順次重設してなる。 The main body 1a includes a storage tank unit 2 for storing (refining) raw material grains, a drying unit 3 for drying raw material grains flowing down from the storage tank unit 2 by hot air ventilation, and the grains of the drying unit 3 outside the machine. And a discharge portion 4 that discharges while intermittently extending from the top.

一方、前記還流部５は、前記本体部1ａの一側面に立設したバケット式の昇降機５ａと貯留タンク部２の上部に横設した上部横搬送手段５ｂ（上部横搬送スクリュー１８を内蔵）とから構成してある。前記昇降機５ａは、複数のバケットを等間隔に装着した無端状のバケットベルトを上部調車と下部調車との間に掛け渡し、機枠でこれを囲んで構成され、下部の搬送始端側１５が、本体部1ａの前記一側面の下部に配設された穀物排出口（後述）に接続し、搬送終端側１６（上部）が、前記上部横搬送手段５ｂの搬送始端側１７に接続するようにしてある。そして、前記昇降機５ａは、駆動モータ（図示せず）からの動力を受けて、下部の搬送始端側１５で穀物をバケットで掬って上部の搬送終端側１６に搬送し投擲（とうてき）するように構成してある。 On the other hand, the reflux part 5 includes a bucket type elevator 5a erected on one side surface of the main body part 1a, and an upper lateral conveying means 5b (built in an upper lateral conveying screw 18) disposed horizontally on the upper part of the storage tank part 2. It is composed of The elevator 5a is constructed by spanning an endless bucket belt having a plurality of buckets mounted at equal intervals between an upper train and a lower train and enclosing it with a machine frame. Is connected to a grain discharge port (described later) disposed at the lower part of the one side surface of the main body 1a, and the conveyance end side 16 (upper part) is connected to the conveyance start end side 17 of the upper lateral conveyance means 5b. It is. The elevator 5a receives power from a drive motor (not shown), so that the grain is crushed with a bucket on the lower conveyance start end side 15 and conveyed to the upper conveyance end side 16 to be thrown (thrown). It is configured.

前記昇降機５ａの搬送終端側１６は、上部横搬送手段５ｂの搬送始端側１７の供給口１７ａに連通させてある。前記上部横搬送手段５ｂの穀物排出側（貯留タンク部２への排出側）は、貯留タンク部２の中央部まで延設してあり、また、穀物排出側の端部には回転飛散板１９が設けてある（図１、図２、図３参照）。なお、前記上部調車の回転軸と上部横搬送スクリュー１８の始端側の端部とは、回転プーリ（任意径）及び伝達ベルトで接続し、前記上部調車の回転動力を伝達して上部横搬送スクリュー１８を回転駆動させるようにしてある。 The transport end side 16 of the elevator 5a is communicated with the supply port 17a on the transport start end side 17 of the upper lateral transport means 5b. The grain discharge side (discharge side to the storage tank unit 2) of the upper horizontal conveying means 5b extends to the center of the storage tank unit 2, and the rotary scattering plate 19 is disposed at the end of the grain discharge side. (See FIGS. 1, 2, and 3). The rotating shaft of the upper train and the end of the upper lateral conveying screw 18 on the start end side are connected by a rotating pulley (arbitrary diameter) and a transmission belt to transmit the rotational power of the upper train and transfer the upper lateral The conveying screw 18 is driven to rotate.

前記貯留タンク部２は、側面を４枚の側板で囲み、その上部を天井板で覆って密閉状に構成する。 The storage tank portion 2 is configured to be hermetically sealed by surrounding a side surface with four side plates and covering an upper portion with a ceiling plate.

前記乾燥部３は、４枚の側板で囲んだ密閉空間内に、その中央に乾燥風胴６を横設するとともに、該乾燥風胴６の両側部に穀物流下槽７，７及び排風胴８，８を順次横設してなる（図１,２参照）。各穀物流下槽７は、任意の間隔をおいて対設した一対の有孔板６ａ，８ａによって形成してあり、これにより、前記乾燥風胴６及び排風胴８の一側面は前記有孔板６ａ，８ａによって構成されている。前記各穀物流下槽７，７は、互いに傾斜状に配設して下端部を連結するようにし、該連結部分には、ロータリーバルブ１１（後述）が横設される。 The drying unit 3 has a drying wind tunnel 6 provided in the center in a sealed space surrounded by four side plates, and the grain falling tanks 7 and 7 and the exhaust wind drums on both sides of the drying wind tunnel 6. 8 and 8 are arranged side by side sequentially (see FIGS. 1 and 2). Each grain flow tank 7 is formed by a pair of perforated plates 6a and 8a arranged at an arbitrary interval, whereby one side surface of the dry wind tunnel 6 and the exhaust wind drum 8 is formed by the perforated holes. It is comprised by board 6a, 8a. Each of the grain flow tanks 7 and 7 is arranged in an inclined manner so as to connect the lower ends thereof, and a rotary valve 11 (described later) is provided horizontally at the connecting portion.

前記乾燥部３は前記乾燥風胴６の一端側となる外部に熱風発生装置９が機枠で囲まれて設けてあり、前記乾燥風胴６は、一端側が前記熱風発生装置９と連通して熱風供給されるように形成され、多端側は前記側板によって閉鎖状態にしてある。前記熱風発生装置９は、バーナーと送風ファンとからなる。前記各排風胴８は、一端側が前記熱風発生装置９を設けられた側の側板によって閉鎖状態にしてある一方、他端側は各側板に排風口８ｂ，８ｂを設けて排風装置１０に連通させてある。これにより、前記熱風発生装置９から乾燥風胴６に供給される熱風は、排風装置１０の吸引排風作用によって、穀物流下槽７，７（穀粒間）を通風した後に排風胴８，８を通って排風装置１０から機外に排風されるようになっている。なお、排風胴８を構成する一方の側板には、張り込み用の張込ホッパー扉１ｂが設けてある。 The drying unit 3 is provided with a hot air generating device 9 surrounded by a machine frame outside the one end side of the drying wind tunnel 6, and one end side of the drying wind tunnel 6 communicates with the hot air generating device 9. It is formed so as to be supplied with hot air, and the multi-end side is closed by the side plate. The hot air generator 9 includes a burner and a blower fan. Each exhaust wind drum 8 is closed at one end by a side plate on the side where the hot air generator 9 is provided, while the other end is provided with exhaust ports 8b and 8b on each side plate. Communicated. Thus, the hot air supplied from the hot air generator 9 to the dry wind tunnel 6 is passed through the grain falling tanks 7 and 7 (between the grains) by the suction exhaust function of the exhaust device 10 and then the exhaust wind drum 8. , 8 is exhausted from the exhaust device 10 to the outside of the machine. Note that a tension hopper door 1b for tensioning is provided on one side plate constituting the wind exhaust drum 8.

前記排出部４は、前述のように前記穀物流下槽７，７の下端部の連結部分に横設したロータリーバルブ１１と、該ロータリーバルブ１１を駆動する駆動装置（図示せず）を設ける。また、ロータリーバルブ１１の下方には下部横搬送スクリュー１２を横設するとともに、該下部横搬送スクリュー１２の両側には、下部横搬送スクリュー１２に対して穀物が流下する漏斗状の流下傾斜板１３を配設する。前記下部横搬送スクリュー１２は、搬送終端側を、側板に設けた開口部を通って本体部1ａの外部に突出して下部連結部（下部アウトレット）１４を構成し、また、下部連結部（下部アウトレット）１４は、前記穀物排出口を設け、該穀物排出口を前記昇降機５ａの搬送始端側に連通してある。 As described above, the discharge unit 4 is provided with the rotary valve 11 provided horizontally at the connecting portion of the lower ends of the grain falling tanks 7 and 7 and a drive device (not shown) for driving the rotary valve 11. In addition, a lower horizontal conveying screw 12 is provided below the rotary valve 11, and a funnel-shaped downflow inclined plate 13 on both sides of the lower horizontal conveying screw 12 from which grains flow down with respect to the lower horizontal conveying screw 12. Is disposed. The lower lateral conveying screw 12 protrudes to the outside of the main body 1a through the opening provided in the side plate at the conveying end side to form a lower connecting portion (lower outlet) 14, and the lower connecting portion (lower outlet) ) 14 is provided with the grain outlet, and the grain outlet is connected to the conveying start end side of the elevator 5a.

前記熱風発生装置９の上部には、循環式穀物乾燥機１の運転を制御するコントロールボックス（制御部）３２が構成してある。コントロールボックス（制御部）３２は、穀物の仕上水分値の設定部や張込、乾燥等運転開始ボタンが配設してあるほか、停止ボタン、原料穀物の種類を設定する穀物種類設定部３２ａ（例えば、穀物種類設定ボタン３２ａ）が設けてあるとともに、前記乾燥運転プログラム等が内蔵された読み出し専用記憶部（ＲＯＭ）３４や中央演算部３５（ＣＰＵ）、入出力回路（Ｉ／Ｏ）３１が設けてある（図９）。また、コントロールボックス（制御部）３２は、前記昇降機５ａに設けた自動穀物水分計３３から測定水分値が受信できるようにしてあり、乾燥運転中の穀物水分値が監視されるようになっている。 A control box (control unit) 32 for controlling the operation of the circulation type grain dryer 1 is configured on the hot air generator 9. The control box (control unit) 32 is provided with a grain finishing moisture value setting unit, an operation start button such as tensioning and drying, a stop button, and a grain type setting unit 32a for setting the type of raw grain. For example, a grain type setting button 32a) is provided, and a read only storage unit (ROM) 34, a central processing unit 35 (CPU), and an input / output circuit (I / O) 31 in which the drying operation program and the like are incorporated are provided. It is provided (FIG. 9). Further, the control box (control unit) 32 can receive the measured moisture value from the automatic grain moisture meter 33 provided in the elevator 5a, and the grain moisture value during the drying operation is monitored. .

次に、本発明の特徴構成を説明する。 Next, the characteristic configuration of the present invention will be described.

粒大選別部２０：
本発明の特徴である粒大選別部２０の構成を説明する。前記粒大選別部２０は、貯留タンク２の天井板の上に横設する（図１,３,４参照）。前記粒大選別部２０は、原料穀物に混入した異物（夾雑物等）を後述するスリット孔２３で粒大選別する回転選別網筒２１（本実施例は８角形とした）を、前記上部横搬送手段５ｂ（上部横搬送スクリュー１８を内蔵）の上部にその長手方向の全長に沿って配設する。そして、前記回転選別網筒２１の側部及び上部を機枠２２及び蓋体２２ａによってほぼ密閉状にカバーして構成してある。前記蓋体２２ａは、任意の固定部材（ボルト・ナットほか）によって機枠２２に着脱自在にしてあり、前記蓋体２２ａを空けて前記回転選別網筒２１等の清掃や点検等ができるようにしてある。前記機枠２２における回転選別網筒２１の原料供給側（昇降機５ａ側）は、前記昇降機５ａにおける搬送終端側１６の粒大選別部２０側の機枠側面１６ｂに面し、該機枠側面１６ｂには穀物供給口１６ａが設けてあり、該穀物供給口１６ａから供給された穀物が回転選別網筒２１の供給側に供給されるようにしてある。一方、前記機枠２２における回転選別網筒２１の排出側には、回転選別網筒２１内に選別されて残った異物を機外に排出するための異物排出口２６を前記貯留タンク部（2）の上面から突設する。このように、前記異物排出口２６を前記貯留タンク部（2）の上面から突設したので、前記回転選別網筒２１を貯留タンク部（2）の一端から他端の全長にわたって設けることができ、この間で十分な異物選別ができる。また、前記貯留タンク部（2）の上面に、機外排出された異物を回収する特別な回収部を必要としないので、前記貯留タンク部（2）の上面に前記回収部の高さスペースを必要とせず、循環式穀物乾燥機１の全体的な外観も損ねない。 Grain size selector 20:
The configuration of the grain size selection unit 20 that is a feature of the present invention will be described. The grain size selection unit 20 is installed horizontally on the ceiling plate of the storage tank 2 (see FIGS. 1, 3 and 4). The grain size selection unit 20 uses a rotary sorting screen cylinder 21 (in this embodiment, an octagonal shape) that sorts foreign matters (contaminations, etc.) mixed in the raw material grain with a slit hole 23 to be described later. It is disposed along the entire length in the longitudinal direction at the upper part of the conveying means 5b (incorporating the upper lateral conveying screw 18). And the side part and upper part of the said rotation selection net | network cylinder 21 are comprised by the machine frame 22 and the cover body 22a so that it may be sealed substantially. The lid 22a is detachably attached to the machine frame 22 by an arbitrary fixing member (bolts, nuts, etc.), and the lid 22a is opened so that the rotary sorting screen cylinder 21 and the like can be cleaned and inspected. It is. The raw material supply side (the elevator 5a side) of the rotary sorting net cylinder 21 in the machine frame 22 faces the machine frame side surface 16b on the grain size selection unit 20 side on the transfer terminal side 16 in the elevator 5a, and the machine frame side surface 16b. Is provided with a grain supply port 16a, and the grain supplied from the grain supply port 16a is supplied to the supply side of the rotary sorting net cylinder 21. On the other hand, on the discharge side of the rotary sorting net cylinder 21 in the machine frame 22, a foreign matter discharge port 26 for discharging the foreign substances left in the rotary sorting net cylinder 21 to the outside of the machine is provided in the storage tank section (2 ) Protruding from the top surface. As described above, since the foreign matter discharge port 26 protrudes from the upper surface of the storage tank portion (2), the rotary sorting net cylinder 21 can be provided from one end of the storage tank portion (2) to the entire length of the other end. In this period, sufficient foreign matter selection can be performed. In addition, since no special recovery unit is required on the upper surface of the storage tank unit (2) for recovering foreign matter discharged outside the machine, the height space of the recovery unit is provided on the upper surface of the storage tank unit (2). It is not necessary and the overall appearance of the circulating grain dryer 1 is not impaired.

前記回転選別網筒２１は、回転軸２５が筒内部の中央に全長に渡って横設されている。前記回転選別網筒２１は、前記回転軸２５の穀物供給側の端部が機枠内に設けた軸受２５ａに軸支され、かつ、他方の端部（排出側）が機枠に設けたギヤードモータ２５ｃの出力軸に連結部材２５ｂを介して直結状に軸支され、これにより、回転自在に構成してある。また、前記回転選別網筒２１は、穀物供給側が上位に穀物排出側が下位となるように傾斜状に配設し、傾斜角度は、１．５度から２．５度の範囲内が好ましい。前記ギヤードモータ２５ｃの選択については、回転選別網筒２１の回転数が、例えば、６０回転／秒になるものとすることができる。 The rotation sorting net cylinder 21 is provided with a rotation shaft 25 at the center inside the cylinder over the entire length. The rotary sorting net cylinder 21 is supported by a bearing 25a provided at the grain supply side end of the rotary shaft 25 in the machine frame, and the other end (discharge side) is provided at the machine frame. The output shaft of the motor 25c is supported in a directly connected manner via a connecting member 25b, thereby being configured to be rotatable. Further, the rotary sorting net cylinder 21 is arranged in an inclined shape so that the grain supply side is higher and the grain discharge side is lower, and the inclination angle is preferably in the range of 1.5 degrees to 2.5 degrees. As for the selection of the geared motor 25c, the rotation speed of the rotary sorting screen cylinder 21 may be 60 rotations / second, for example.

前記回転選別網筒２１には、複数のスリット孔２３が設けてある（図３）。該各スリット孔２３は、スリット孔の長手方向を回転選別網筒２１の長手方向と平行に、かつ、並列にして配設してある。ただし、スリット孔２３は、前記回転飛散板１９の上部の駆動部に穀物が落下・堆積することを防止するため、回転飛散板１９の上部位置には配設しないようにする。また、回転選別網筒２１の搬送終端縁部の手前の任意寸法の位置においても、スリット孔２３を配設しないようにしてある。前記スリット孔２３の大きさは適宜設定することができ、例えば、幅が４ミリメートルで長さが４５ミリメートルとすることができる。また、穀物の搬送方向の上流側と下流側とで大きさを変更するようにしてもよい。なお、複数のスリット孔２３を通過した穀物は、前記回転選別網筒２１の下部にその長手方向の全長にわたって配設した穀物排出口２１ａから前記上部横搬送手段５ｂ内及び貯留タンク部２の内部に落下するようにしてある。 The rotary sorting net cylinder 21 is provided with a plurality of slit holes 23 (FIG. 3). The slit holes 23 are arranged with the longitudinal direction of the slit holes parallel to and parallel to the longitudinal direction of the rotary sorting screen cylinder 21. However, the slit hole 23 is not disposed at the upper position of the rotary scattering plate 19 in order to prevent the grains from dropping and depositing on the driving unit on the upper side of the rotary scattering plate 19. Further, the slit hole 23 is not provided at a position of an arbitrary dimension before the conveyance end edge of the rotary sorting net cylinder 21. The size of the slit hole 23 can be appropriately set. For example, the width can be 4 millimeters and the length can be 45 millimeters. Further, the size may be changed between the upstream side and the downstream side in the grain conveyance direction. The grains that have passed through the plurality of slit holes 23 pass from the grain discharge port 21a disposed in the lower part of the rotary sorting net cylinder 21 over the entire length in the longitudinal direction thereof to the inside of the upper lateral conveying means 5b and the inside of the storage tank part 2. To fall.

前記回転選別網筒２１の外周方向には、前記スリット孔２３の目詰まり防止対策のため、例えば、回転選別網筒２１の外周に当接するようにしたスクレーパーを配設するとよい（図示せず）。また、前記回転選別網筒２１内には搬送作用板２４を適宜配設して、穀物及び異物（夾雑物）の内部搬送を促進するようにしてある。 In order to prevent clogging of the slit hole 23, for example, a scraper that is in contact with the outer periphery of the rotary sorting net cylinder 21 may be disposed in the outer circumferential direction of the rotary sorting net cylinder 21 (not shown). . Further, a transport action plate 24 is appropriately disposed in the rotary sorting net cylinder 21 so as to promote internal transport of grains and foreign matters (contaminants).

穀物捕捉供給部３６：
前記昇降機５ａの搬送終端側１６の内部において、前記穀物供給口（原料供給口）１６ａの近傍位置には、前記各バケット５ｃから投擲（とうてき）・排出された穀物の一部を捕捉して当該穀物供給口１６ａに案内供給するための穀物捕捉供給部３６が設けてある（図３）。該穀物捕捉供給部３６は、例えば、穀物供給用傾斜板３６ａと穀物堰止板３６ｂとから構成することができる（図４）。前記穀物供給用傾斜板３６ａは、前記穀物供給口１６ａの下縁部近傍から、前記搬送終端側１６の内部に向って上方傾斜状に任意長さ寸法だけ延設した板状の部材であり、該板の横幅は穀物供給口１６ａの下縁部の長さと同一か又は長く構成する。前記穀物供給用傾斜板３６ａには、後述する開閉板３７ａと同一形状に切り欠いた穀物落下口３６ｃを形成する。一方、前記穀物堰止板３６ｂは、前記穀物供給口１６ａにおける前記投擲方向の下流側の側縁部近傍から、前記穀物供給用傾斜板３６ａの縁部に沿って前記搬送終端側１６の内部に向って任意長さ寸法だけ延設し、かつ、前記縁部に接続した板状の部材であり、該板の高さは穀物供給口１６ａの側縁部の長さと同一か又は長く構成する。 Grain capture and supply unit 36:
Inside the transport terminal side 16 of the elevator 5a, in the vicinity of the grain supply port (raw material supply port) 16a, a part of the grain thrown out and discharged from each bucket 5c is captured and A grain capturing and supplying unit 36 for guiding and supplying to the grain supplying port 16a is provided (FIG. 3). The grain catching and supplying unit 36 can be composed of, for example, a grain supplying inclined plate 36a and a grain damming plate 36b (FIG. 4). The grain supply inclined plate 36a is a plate-like member extending from the vicinity of the lower edge of the grain supply port 16a toward the inside of the conveyance end side 16 by an arbitrary length in an upwardly inclined shape, The width of the plate is equal to or longer than the length of the lower edge of the grain supply port 16a. The grain supply inclined plate 36a is formed with a grain drop port 36c cut out in the same shape as an opening / closing plate 37a described later. On the other hand, the grain damming plate 36b extends from the vicinity of the side edge of the grain supply port 16a on the downstream side in the throwing direction to the inside of the conveyance end side 16 along the edge of the grain supply inclined plate 36a. It is a plate-like member extending in an arbitrary length direction and connected to the edge portion, and the height of the plate is the same as or longer than the length of the side edge portion of the grain supply port 16a.

なお、図４に示した破線矢印Ｔ１，Ｔ２は、各バケット５ｃからの穀物の投擲幅が示してあり、図４において破線矢印Ｔ１は穀物捕捉供給部３６に捕捉される投擲穀物の一部を示し、また破線矢印Ｔ２は穀物捕捉供給部３６で捕捉されることなく上部搬送手段５ｂの供給口１７ａに供給される投擲穀物の一部が示してある。 The broken line arrows T1 and T2 shown in FIG. 4 indicate the throwing width of the grain from each bucket 5c. In FIG. 4, the broken line arrow T1 represents a part of the thrown grain captured by the grain catching and supplying unit 36. A broken line arrow T2 indicates a part of the thrown grain supplied to the supply port 17a of the upper conveying means 5b without being captured by the grain capturing and supplying unit 36.

前記穀物捕捉供給部３６における穀物供給口１６ａには、穀物供給口開閉手段３７を配設する（図３、図４）。該穀物供給口開閉手段３７は、穀物供給口１６ａを塞ぐ大きさの開閉板３７ａと、該開閉板３７ａの下縁部に設けて開閉板３７ａを回動させるために穀物供給口１６ａの下縁部近傍に設けた回動軸３７ｂと、該回動軸３７ａの他方の軸端側を機外に延設し、その端部に設けたシャッタレバー３７ｃと、該シャッタレバー３７ｃによる開閉板３７ａの開閉切換えを操作する開閉ロープ３７ｄ，３７ｅと、前記開閉板３７ａに開閉付勢作用を与えるための付勢スプリング３７ｆとから構成するとよい。これにより、前記開閉ロープ３７ｄを手で下方に引くことによって前記開閉板３７ａが回動して穀物供給口１６ａが閉じ、また、他方側の前記開閉ロープ３７ｅを引くことによって穀物供給口１６ａが開かれるようにしてある。この開閉時にはそれぞれ付勢スプリング３７ｆによる付勢力が作用する。 A grain supply port opening / closing means 37 is disposed in the grain supply port 16a of the grain capturing and supplying unit 36 (FIGS. 3 and 4). The grain supply port opening / closing means 37 is provided with an opening / closing plate 37a having a size for closing the grain supply port 16a, and a lower edge of the grain supply port 16a for rotating the opening / closing plate 37a provided at the lower edge of the opening / closing plate 37a. A rotation shaft 37b provided in the vicinity of the portion, the other shaft end side of the rotation shaft 37a extending outside the machine, a shutter lever 37c provided at the end thereof, and an opening / closing plate 37a formed by the shutter lever 37c. The open / close ropes 37d and 37e for operating the open / close switching and the urging spring 37f for applying an open / close urging action to the open / close plate 37a may be used. Accordingly, the opening / closing plate 37a is rotated by pulling the opening / closing rope 37d downward by hand to close the grain supply port 16a, and the grain supply port 16a is opened by pulling the opening / closing rope 37e on the other side. It is supposed to be. At the time of opening and closing, a biasing force by the biasing spring 37f is applied.

前記貯留タンク部２において、天板２ａには外気取入口２ｂを配設する。該外気取入口２ｂは、図１に示したように、開口を例えば網状部材で形成する。前記外気取入口２ｂは、前記天板２ａにおいて、前記粒大選別部２０の両側の近傍位置に、その長手方向に沿って複数個構成する。前記外気取入口２ｂは、後述するように前記回転選別網筒２１内の負圧状態を防ぎその長手方向にわたって正圧状態を均等にするように構成すればよく、例えば、複数設けずに、前記粒大選別部２０の長手方向にわたって細長形状のものを一つ構成するようにしてもよい。 In the storage tank 2, an outside air inlet 2 b is provided on the top plate 2 a. As shown in FIG. 1, the outside air inlet 2b has an opening formed by, for example, a mesh member. A plurality of the outside air inlets 2b are formed along the longitudinal direction of the top plate 2a at positions near both sides of the grain size selection unit 20. The outside air inlet 2b may be configured to prevent a negative pressure state in the rotary sorting net cylinder 21 and to make a positive pressure state uniform in the longitudinal direction as described later. You may make it comprise one thing of elongate shape over the longitudinal direction of the grain size selection part 20. FIG.

作用：
本発明の循環式穀物乾燥機１の作用を説明する。 Action:
The operation of the circulation type grain dryer 1 of the present invention will be described.

張込運転：
まず、循環式穀物乾燥機１に主電源を入れ、この後に前記コントロールボックス３２の張込運転ボタンを押すと、前記下部横搬送スクリュー１２や昇降機５ａ、上部横搬送スクリュー１８、ギヤードモータ２５ｃ（粒大選別部２０）などの各駆動部が駆動開始される。次いで、前記張込ホッパー扉１ｂを開けて、その張込口から原料穀物を投入する。投入した穀物は流下傾斜板１３の上を流下して下部横搬送スクリュー１２上に集穀された後に、該下部横搬送スクリュー１２の搬送作用によって下部アウトレット１４を介して昇降機５ａの搬送始端側１５に供給される。該搬送始端側１５に供給・堆積された穀物は、各バケット５ｃで掬われて上方に搬送されて前記搬送終端側１６において投擲される（図５）。 Overhang operation:
First, when the main power source is turned on to the circulation type grain dryer 1 and then the tension operation button of the control box 32 is pressed, the lower lateral conveying screw 12, the elevator 5a, the upper lateral conveying screw 18, the geared motor 25c (grain Each drive unit such as the large selection unit 20) starts to be driven. Next, the tension hopper door 1b is opened, and raw material grains are introduced from the tension opening. The introduced grain flows down on the flow-down inclined plate 13 and is collected on the lower horizontal conveying screw 12, and then the conveying start end side 15 of the elevator 5 a through the lower outlet 14 by the conveying action of the lower horizontal conveying screw 12. To be supplied. Grains supplied and deposited on the conveyance start end side 15 are crushed by each bucket 5c, conveyed upward, and thrown on the conveyance end side 16 (FIG. 5).

このとき、前記穀物捕捉供給部３６における穀物供給口１６ａは、原料穀物が籾であるか麦であるか等によって適宜、穀物供給口開閉手段３７を操作して開状態又は閉状態にするとよい。前記穀物供給口開閉手段３７（開閉板３７ａ）を開状態にするには、前記開閉ロープ３７ｅを手で下方に引っ張ることにより行われ、このとき開閉板３７ａは、前記引っ張り作用が前記シャッタレバー３７ｃ及び回動軸３７を介して伝達されて回動し、前記穀物供給用傾斜板３６ａにおける前記穀物落下口３６ｃを付勢状態をもって嵌合する（図５）。また、逆に、前記穀物供給口開閉手段３７（開閉板３７ａ）を閉状態にするには、前記開閉ロープ３７ｄを手で下方に引っ張ることで開閉板３７ａが回動されて穀物供給口１６ａを付勢状態をもって閉じる。 At this time, the grain supply port 16a in the grain capturing and supplying unit 36 may be appropriately opened or closed by operating the grain supply port opening / closing means 37 depending on whether the raw material grain is straw or wheat. The grain supply port opening / closing means 37 (opening / closing plate 37a) is opened by pulling the opening / closing rope 37e downward by hand. At this time, the opening / closing plate 37a has the pulling action of the shutter lever 37c. And it is transmitted and rotated via the rotating shaft 37, and the grain drop port 36c in the grain supply inclined plate 36a is fitted in a biased state (FIG. 5). Conversely, in order to close the grain supply port opening / closing means 37 (opening / closing plate 37a), the opening / closing plate 37a is rotated by pulling the opening / closing rope 37d downward by hand, thereby opening the grain supply port 16a. Close with biased state.

本実施例においては、原料は籾とし、穀物供給口１６ａは開状態として運転する。このため、各バケット５ｃから投擲された前記粒大選別部２０によった側の穀物の一部（図５の矢印Ｔ１）は、前記穀物堰止板３６ｂに衝突されながら穀物供給用傾斜板３６ａ上に落下した後、前記穀物供給用傾斜板３６ａにおける傾斜下方側に流下して穀物供給口１６ａを介して粒大選別部２０における回転選別網筒２１の始端側に供給される（図５、図７の矢印Ｙ）。一方、各バケット５ｃから投擲された穀物の内、穀物捕捉供給部３６で捕捉されなかった残りの穀粒（図５の矢印Ｔ２）は、上部搬送手段５ｂの供給口１７ａに落下・供給された後に、貯留タンク部２内に張り込まれる。 In this embodiment, the raw material is koji, and the grain supply port 16a is operated in an open state. Therefore, a part of the grain (arrow T1 in FIG. 5) on the side by the grain size selection unit 20 thrown from each bucket 5c is collided with the grain damming plate 36b, and the grain supply inclined plate 36a. After falling down, it flows down to the inclined lower side of the grain supply inclined plate 36a and is supplied to the starting end side of the rotary sorting net cylinder 21 in the grain size selection unit 20 through the grain supply port 16a (FIG. 5, Arrow Y in FIG. On the other hand, among the grains thrown from each bucket 5c, the remaining grains (arrow T2 in FIG. 5) that were not captured by the grain capture and supply unit 36 were dropped and supplied to the supply port 17a of the upper conveying means 5b. Later, it is stuck in the storage tank 2.

前記粒大選別部２０において、回転選別網筒２１の始端側に供給された穀物Ｇは、図７に示したように、前記回転選別網筒２１の傾斜と回転作用（図７の矢印Ｃ）によって排出側（異物排出口２６側）に順次撹拌されながら搬送され、この間に、前記スリット孔２３・・・を通過して落下した後、穀物排出口２１ａから前記上部横搬送スクリュー１８の上に又は貯留タンク部２の内部に直接落下される（図３）。上部横搬送スクリュー１８の上に落下した穀物Ｇは、上部横搬送スクリュー１８の搬送作用及び回転飛散板１９を介して貯留タンク部２内に供給される。一方、回転選別網筒２１の内部には、前記スリット孔２３・・・を通過しなかった原料に混入していた異物（藁屑等の夾雑物）が選別され、この異物は回転選別網筒２１の排出側から前記異物排出口２６を介して機外に排出される（図７）。 In the grain size sorting unit 20, the grain G supplied to the starting end side of the rotary sorting net cylinder 21 is tilted and rotated (arrow C in FIG. 7) of the rotary sorting net cylinder 21 as shown in FIG. Are conveyed while being sequentially stirred to the discharge side (foreign matter discharge port 26 side), and during this time, after passing through the slit hole 23..., They are dropped onto the upper lateral transfer screw 18 from the grain discharge port 21a. Alternatively, it is dropped directly into the storage tank 2 (FIG. 3). The grain G that has fallen on the upper lateral conveying screw 18 is supplied into the storage tank unit 2 via the conveying action of the upper lateral conveying screw 18 and the rotary scattering plate 19. On the other hand, foreign matter (contamination such as sawdust) mixed in the raw material that has not passed through the slit holes 23 is sorted inside the rotary sorting net cylinder 21, and this foreign substance is separated into the rotary sorting net cylinder. 21 is discharged from the discharge side through the foreign matter discharge port 26 (FIG. 7).

なお、前記貯留タンク部２の天板２ａに配設した各外気取入口２ｂからは、前記排風装置１０の吸引作用により、図７の破線矢印のように、外気が貯留タンク部２内に吸入されるため、前記粒大選別部２０内（回転選別網筒２１）が負圧状態にならず正圧状態となる。このため、回転選別網筒２１内に選別された異物は、回転選別網筒２１の内壁面に引っ付いて滞留した状態とはならず搬送され、前記異物排出口２６から機外排出される。また、前記外気取入口２ｂが、前記粒大選別部２０の長手方向に沿った側方の近傍位置に複数配設してあるので、前記回転選別網筒２１の内部が均等な正圧状態となり、回転選別網筒２１の内部に選別された異物をスムーズに搬送させることができる。このため、前記回転選別網筒２１内において穀物の詰まり防止効果となる。 In addition, from each outside air intake port 2b arranged on the top plate 2a of the storage tank unit 2, the outside air is brought into the storage tank unit 2 as indicated by the broken arrow in FIG. Since it is inhaled, the inside of the large particle sorting unit 20 (the rotary sorting net cylinder 21) is not in a negative pressure state but in a positive pressure state. For this reason, the foreign matter sorted in the rotary sorting mesh cylinder 21 is transported without being stuck to the inner wall surface of the rotary sorting mesh cylinder 21 and discharged from the foreign matter discharge port 26. In addition, since a plurality of the outside air inlets 2b are arranged in the vicinity of the side along the longitudinal direction of the grain size selection unit 20, the inside of the rotary selection screen cylinder 21 is in a uniform positive pressure state. The sorted foreign matter can be smoothly conveyed into the rotary sorting net cylinder 21. For this reason, it becomes an effect of preventing clogging of grains in the rotary sorting net cylinder 21.

乾燥運転：
前記張込運転が終了した後は、前記コントロールボックス３２の乾燥運転ボタンを押して乾燥運転を行う。乾燥運転の際も、前記穀物供給口１６ａは開状態にしておく。乾燥運転は、前記ロータリーバルブ１１、熱風発生装置９及び排風装置１０も駆動させ、穀粒を、穀物流下槽７，７を流下する間に前記熱風発生装置９で生成した熱風を通風乾燥し、かつ、前記還流部５を介して機内循環しながら乾燥される。該乾燥運転は、前記自動穀物水分計３３が測定した穀物水分値を監視しながら、該穀物水分値が予め設定した穀物水分値（約１５％）に到達するまで行われる。この乾燥運転の間においても、各バケット５ｃから投擲された穀物の一部（図５の矢印：Ｔ１，Y）は、前述と同様にして前記粒大選別部２０（回転選別網筒２１）供給されて混入している異物が選別除去される。なお、乾燥運転において全穀物は、乾燥が仕上がるまでの間に複数回機内循環するため、各バケット５ｃから投擲された穀物の全量が粒大選別部２０に供給されていなくても、複数回の循環のうちに一度はその一部（図５の矢印：Ｔ１，Y）となって供給されて異物選別がなされる。 Dry operation:
After the tension operation is finished, the drying operation button of the control box 32 is pressed to perform the drying operation. Also during the drying operation, the grain supply port 16a is left open. In the drying operation, the rotary valve 11, the hot air generating device 9 and the exhaust air device 10 are also driven, and the grains are dried by passing the hot air generated by the hot air generating device 9 while flowing down the grain falling tanks 7 and 7. And it is dried while circulating in the apparatus through the reflux section 5. The drying operation is performed until the grain moisture value reaches a preset grain moisture value (about 15%) while monitoring the grain moisture value measured by the automatic grain moisture meter 33. Even during this drying operation, a part of the grains thrown from each bucket 5c (arrows in FIG. 5: T1, Y) is supplied in the same manner as described above to the grain size selection unit 20 (rotary sorting screen cylinder 21). The foreign matter mixed in is sorted out. In the drying operation, all the grains are circulated in the machine a plurality of times until the drying is finished. Therefore, even if the total amount of the grains thrown from each bucket 5c is not supplied to the grain size sorting unit 20, the plurality of times One part of the circulation (arrows in FIG. 5: T1, Y) is supplied and the foreign matter is selected.

前記粒大選別部２０は、原料穀物が例えば小麦のときには、前記乾燥運転等の際に使用しない。このため、原料穀物が小麦のときには、前記乾燥運転等の際には、前述のように、前記開閉ロープ３７ｄを引っ張って開閉板３７ａによって穀物供給口１６ａを閉じる（図６）。このとき、前記穀物供給用傾斜板３６ａにおける穀物落下口３６ｃは、開口状態となるため、前記各バケット５ｃから投擲された前記粒大選別部２０によった側の穀物の一部（図６の矢印Ｔ１，Ｙ）は、穀物供給口１６ａに供給されることなく、穀物落下口３６ｃを通り、前記上部搬送手段５ｂの供給口１７ａに落下・供給される。このため、前記穀物供給用傾斜板３６ａ上に、穀物が残留（滞留）することがない。 The grain size selection unit 20 is not used during the drying operation or the like when the raw grain is, for example, wheat. For this reason, when the raw material grain is wheat, during the drying operation or the like, as described above, the opening / closing rope 37d is pulled and the opening / closing plate 37a closes the grain supply port 16a (FIG. 6). At this time, since the grain drop port 36c in the grain supply inclined plate 36a is in an open state, a part of the grain on the side by the grain size selection unit 20 thrown from each bucket 5c (FIG. 6). Arrows T1 and Y) are not supplied to the grain supply port 16a, but are dropped and supplied to the supply port 17a of the upper conveying means 5b through the grain drop port 36c. For this reason, grain does not remain (stay) on the grain supply inclined plate 36a.

以上のように、本発明の粒大選別部２０は、選別処理能力が、各バケット５ｃから投擲された穀物の一部となる穀物量を処理できるものであればよいため、小型タイプでよく、このため、大量の穀物の処理ができる大型タイプと比べて原料詰まり等の運転トラブルが生じにくい。また、前記貯留タンク部２の上部に設けたため、従来例の循環式穀物乾燥機のように乾燥機本体側部に粒大選別部を設けたものに比べて当該乾燥機本体側部にスペースを必要としない。このため、例えば複数台の循環式穀物乾燥機を並設する際に設置スペースを小さくできる。さらに、前述のように小型タイプ（少量処理）で、かつ、上部横搬送スクリュー１８の上部にその長手方向に沿って重設した構造であるため、前記貯留タンク部２の上部における高さ方向の設置スペースも小さくてよい。このため、循環式穀物乾燥機を納屋等に設置する際においても、天井等の高さ方向に余分なスペースを必要としないため、従来と同じ高さ等の納屋等に設置することができる。なお、小型タイプ（少量処理）であるため、選別精度もよい。 As described above, the grain size sorting unit 20 of the present invention only needs to have a sorting capacity that can process the amount of grain that becomes part of the grain thrown from each bucket 5c. For this reason, operation troubles such as clogging of raw materials are less likely to occur compared to a large type capable of processing a large amount of grains. Moreover, since it provided in the upper part of the said storage tank part 2, compared with what provided the grain size selection part in the dryer main body side part like the circulation type grain dryer of a prior art example, the space in the said dryer main body side part is provided. do not need. For this reason, for example, when installing a plurality of circulating grain dryers, the installation space can be reduced. Further, as described above, since it is a small type (small amount processing) and is superposed along the longitudinal direction on the upper side of the upper lateral conveying screw 18, the height in the upper part of the storage tank unit 2 is increased. The installation space may be small. For this reason, even when the circulation type grain dryer is installed in a barn or the like, an extra space is not required in the height direction such as the ceiling, so that it can be installed in a barn or the like having the same height as the conventional one. In addition, since it is a small type (small amount processing), the sorting accuracy is good.

変形例：
前記穀物供給口開閉手段３７の変形例を説明する（図８及び図９）。 Variations:
A modification of the grain supply port opening / closing means 37 will be described (FIGS. 8 and 9).

前記穀物供給口開閉手段３７について、前記実施例では、前記開閉板３７ａの開閉を開閉ロープ３７ｄ，３７ｅによって手動開閉する構成としたが、本変形例では、前記開閉板３７ａの開閉を切換バルブモータ３８及びリンク部材３９によって自動的に行う構成とした。 In the embodiment, the grain supply port opening / closing means 37 is configured to manually open / close the opening / closing plate 37a by the opening / closing ropes 37d, 37e. However, in this modification, the opening / closing plate 37a is opened / closed by a switching valve motor. 38 and the link member 39 automatically perform the configuration.

本変形例の切換バルブモータ３８は、前記昇降機５ａの搬送終端側１６の機枠において、前記シャッタレバー３７ｃの近傍位置に配設する（図８）。前記切換バルブモータ３８は、出力作用が前記シャッタレバー３７ｃの一端側に伝達されるように、リンク部材３９を介してシャッタレバー３７ｃと連結してある。前記切換バルブモータ３８は、リミットスイッチ３８ａを備えるとともに、前記コントロールボックス（制御部）３２からの出力信号を受けて駆動開始し、この後にリミットスイッチ３８ａの検知により停止するようにしてある。 The switching valve motor 38 of this modification is disposed in the vicinity of the shutter lever 37c in the machine frame on the conveyance end side 16 of the elevator 5a (FIG. 8). The switching valve motor 38 is connected to the shutter lever 37c via the link member 39 so that the output action is transmitted to one end side of the shutter lever 37c. The switching valve motor 38 includes a limit switch 38a, starts driving in response to an output signal from the control box (control unit) 32, and then stops upon detection of the limit switch 38a.

前記コントロールボックス３２は、乾燥運転等を行う前に、オペレータが穀物種類設定ボタン（穀物種類設定部）３２ａで穀物種類（籾又は麦など）が設定される。前記コントロールボックス３２は、この設定された穀物種類に応じて切換バルブモータ３８に駆動信号を出力するように運転プログラムが内蔵してある。このため、例えば、穀物種類が籾に設定された場合には、張込や乾燥等の各種運転開始時に前記切換バルブモータ３８に駆動信号が出力され、切換バルブモータ３８の出力によって開閉板３７ａを自動的に回動させて前記穀物供給口１６ａを開状態にする（図８）。一方、穀物種類が麦に設定された場合には、逆に、前記穀物供給口１６ａを閉状態にするようにしてもよい。以上のように、前記穀物供給口１６ａの開閉を、自動的に行えるようにしたので、穀物種類が変更した際に開閉の切換え忘れを防止できる。 In the control box 32, before the drying operation or the like is performed, the operator sets a grain type (such as straw or wheat) with a grain type setting button (grain type setting unit) 32a. The control box 32 incorporates an operation program so as to output a drive signal to the switching valve motor 38 in accordance with the set grain type. For this reason, for example, when the grain type is set to cocoon, a driving signal is output to the switching valve motor 38 at the start of various operations such as stretching and drying, and the opening / closing plate 37a is opened by the output of the switching valve motor 38. The grain supply port 16a is automatically turned to open (FIG. 8). On the other hand, when the grain type is set to wheat, the grain supply port 16a may be closed. As described above, since the grain supply port 16a can be automatically opened and closed, it is possible to prevent forgetting to switch between opening and closing when the grain type is changed.

また、前記穀物供給口１６ａの開閉タイミングについては、前記自動穀物水分計３３の測定水分値が所定水分値（例えば２０％）になった時点で開状態にして異物選別を開始するようにしてもよい。これは、原料穀物が籾で仮に枝梗粒が多い場合に、乾燥初期から粒大選別部２０に供給すると、枝梗の影響で原料穀物の詰まりや籾自体が前記異物排出口２６から排出されるトラブルが生じやすいが、所定水分値まで乾燥された時点で開状態にして異物選別を開始するようにすると、それまでの機内循環作用（粒々摩擦）によって籾に付いていた枝梗が分離されるため、上記トラブルの防止効果がある。 As for the opening and closing timing of the grain supply port 16a, when the measured moisture value of the automatic grain moisture meter 33 reaches a predetermined moisture value (for example, 20%), it is opened and foreign matter selection is started. Good. This is because, when the raw material grain is boiled and has a lot of branch stems, if it is supplied to the grain size selection unit 20 from the initial stage of drying, clogging of the raw material grains and the straw itself are discharged from the foreign matter outlet 26 due to the influence of the branch stems. Trouble is likely to occur, but when it is dried to the specified moisture level and the foreign matter is started to be sorted out, the branch rachis attached to the heel is separated by the in-machine circulation action (particle friction). Therefore, there is an effect of preventing the above trouble.

さらに、前記穀物供給口１６ａの開閉量（開閉板３７ａの回動量）も、前記手動開閉の実施例又は自動開閉の実施例を問わず、例えば測定水分値の低下に応じて段階的に変更し供給量を順次増加するようにしてもよい。 Furthermore, the amount of opening and closing of the grain supply port 16a (the amount of rotation of the opening and closing plate 37a) is also changed stepwise in accordance with, for example, a decrease in the measured moisture value regardless of the manual opening / closing example or the automatic opening / closing example. The supply amount may be increased sequentially.

また、図１又は図４に示したように、前記粒大選別部２０の供給始端側の位置に、該粒大選別部２０の機枠２２の内部に連通させた除塵ファン４０を配設することにより、粒大選別部２０の機枠２２の内部に生じた粉塵や軽い夾雑物を吸引排出することができ、これにより、穀物に混入していた異物の選別効果が向上する。 Further, as shown in FIG. 1 or FIG. 4, a dust removal fan 40 communicated with the inside of the machine frame 22 of the grain size sorting unit 20 is disposed at the supply start end side position of the grain size sorting unit 20. As a result, dust and light impurities generated inside the machine frame 22 of the grain size sorting unit 20 can be sucked and discharged, thereby improving the sorting effect of foreign matters mixed in the grain.

本発明の循環式穀物乾燥機の前方斜視図を示す。The front perspective view of the circulation type grain dryer of the present invention is shown. 同循環式穀物乾燥機の正面側の縦断面図を示す。The longitudinal cross-sectional view of the front side of the circulation type grain dryer is shown. 本発明の粒大選別部の中央側断面図を示す。The center side sectional view of the grain size selection part of the present invention is shown. 本発明の昇降機の排出側機枠内における粒大選別部における穀物供給口開閉手段及び穀物捕捉供給部を示す。The grain supply port opening / closing means and the grain capture supply part in the grain size selection part in the discharge side machine frame of the elevator of the present invention are shown. 図４の要部における作用図（穀物供給口の開状態）を示す。FIG. 5 shows an operation diagram (open state of the grain supply port) in the main part of FIG. 4. 図５の要部における作用図（穀物供給口の閉状態）を示す。The effect | action figure in the principal part of FIG. 5 (closed state of a grain supply port) is shown. 粒大選別部の選別作用図を示す。The sorting action figure of a grain size sorting part is shown. 穀物供給口開閉手段の変形例を示す。The modification of a grain supply port opening-closing means is shown. コントロールボックス等のブロック図を示す。The block diagram of a control box etc. is shown.

１循環式穀物乾燥機
１ａ本体部
１ｂ張込ホッパー扉
２貯留タンク部
２ａ天板
２ｂ外気取入口
３乾燥部
４繰出部
５還流部
５ａ昇降機(バケット式)
５ｂ上部横搬送手段
５ｃバケット
６乾燥風胴
６ａ有孔板
７穀物流下槽
８排風胴
８ａ有孔板
８ｂ排風口
９熱風発生装置
１０排風装置
１１ロータリーバルブ
１２下部横搬送スクリュー
１３流下傾斜板
１４下部連結部（下部アウトレット）
１５搬送始端側
１６搬送終端側
１６ａ穀物供給口
１６ｂ機枠側面
１７搬送始端側
１７ａ供給口
１８上部横搬送スクリュー
１９回転飛散板
２０粒大選別部
２１回転選別網筒
２１ａ穀物排出口
２２機枠
２２ａ蓋体
２３スリット孔
２４搬送作用板
２５回転軸
２５ａ軸受
２５ｂ連結部材
２５ｃギヤードモータ
２６異物排出口
３１入出力回路（Ｉ／Ｏ）
３２コントロールボックス（制御部）
３２ａ穀物種類設定ボタン
３３自動穀物水分計
３４読み取り専用記憶部（ＲＯＭ）
３５中央演算部（ＣＰＵ）
３６穀物捕捉供給部
３６ａ穀物供給用傾斜板
３６ｂ穀物堰止板
３６ｃ穀物落下口
３７穀物供給口開閉手段
３７ａ開閉板
３７ｂ回動軸
３７ｃシャッタレバー
３７ｄ開閉ロープ（開）
３７ｅ開閉ロープ（閉）
３７ｆ付勢スプリング
３８切換バルブモータ
３８ａリミットスイッチ
３９リンク部材
４０除塵ファン
Ｇ穀物
Ｔ１穀物捕捉供給部(36)に捕捉される投擲穀物の一部
Ｔ２穀物捕捉供給部(36)に捕捉されない投擲穀物の一部
Ｙ穀物の供給方向

DESCRIPTION OF SYMBOLS 1 Circulating grain dryer 1a Main-body part 1b Stretch hopper door 2 Storage tank part 2a Top plate 2b Outside air intake 3 Drying part 4 Feeding part 5 Reflux part 5a Elevator (bucket type)
5b Upper horizontal conveying means 5c Bucket 6 Drying wind tunnel 6a Perforated plate 7 Grain flow down tank 8 Exhaust drum 8a Perforated plate 8b Exhaust port 9 Hot air generating device 10 Exhaust device 11 Rotary valve 12 Lower horizontal conveying screw 13 Lowering inclined plate 14 Lower connection part (lower outlet)
15 Transport start end side 16 Transport end side 16a Grain supply port 16b Machine frame side surface 17 Transport start end side 17a Supply port 18 Upper horizontal transport screw 19 Rotating scattering plate 20 Grain size sorting unit 21 Rotation sorting net cylinder 21a Grain discharge port 22 Machine frame 22a Lid 23 Slit hole 24 Conveying plate 25 Rotary shaft 25a Bearing 25b Connecting member 25c Geared motor 26 Foreign matter outlet 31 Input / output circuit (I / O)
32 Control box (control unit)
32a Grain type setting button 33 Automatic grain moisture meter 34 Read-only memory (ROM)
35 Central processing unit (CPU)
36 Grain capture and supply unit 36a Grain supply inclined plate 36b Grain dam plate 36c Grain drop port 37 Grain supply port opening and closing means 37a Opening and closing plate 37b Rotating shaft 37c Shutter lever 37d Opening and closing rope (open)
37e Open / close rope (closed)
37f Energizing spring 38 Switching valve motor 38a Limit switch 39 Link member 40 Dust removal fan G Grain T1 Part of the thrown grain captured by the grain catching and supplying part (36) T2 Part Y Grain supply direction

Claims

A grain storage tank (2);
A drying section (3) for drying the grain flowing down from the storage tank section (2) by blowing hot air;
A discharge section (4) for discharging grain in the drying section (3);
A reflux part for returning the grain discharged from the discharge part (4) to the storage tank part (2) via the bucket type elevator (5a) and the upper horizontal conveying means (5b) above the storage tank part (2) (5) and
A grain size sorting section (20) for feeding grains to the rotary sorting net cylinder (21) by sorting the grains being transferred in the reflux section (5) and removing foreign matters larger than the grains,
A grain moisture measuring unit (33) for measuring grain moisture;
A control unit (32) for controlling a drying operation or the like until the grain moisture value measured by the grain moisture measuring unit (33) reaches a set moisture value;
In the circulating grain dryer (1) with
The grain size selection part (20) is provided on the upper part of the storage tank part (2), and is provided with a raw material supply port (16a) for supplying grains to the rotary selection net tube (21), and the raw material supply port (16a) is provided with a grain catching and supplying section (36) for catching and supplying a part of the grain thrown from the discharge side of the bucket elevator (5a) , and the rotary sorting net (21) The grain outlet (21a) for discharging the grain that has passed through the storage tank (2) is disposed at the lower part, while the foreign substance outlet (26) for discharging foreign substances to the outside of the machine is provided in the rotary sorting net (21). A circulation type grain dryer characterized by being provided on the downstream side.

The grain size selection unit (20) is provided along the upper horizontal conveying means (5b), and a part of the grain outlet (21a) is communicated with the upper horizontal conveying means (5b). Circulating grain dryer as described in

The circulating grain dryer according to claim 1 or 2, wherein the foreign matter discharge port (26) protrudes from the upper surface of the storage tank (2).

The grain catching and supplying unit (36) extends from the lower edge of the grain supply port (16a) to the bucket elevator (5a) side by a predetermined length so as to incline upward, and is one of the grains that have been thrown. The circulation type grain dryer according to any one of claims 1 to 3, comprising a grain supply inclined plate (36a) for supplying a part to the grain supply port (16a).

The grain catching plate (36b) for damming grain thrown from the bucket type elevator (5a) is provided at one end of the grain catching and supplying section (36), according to any one of claims 1 to 4. Circulating grain dryer.

The circulation type grain dryer according to any one of claims 1 to 5, wherein the grain supply port (16a) includes a grain supply port opening / closing means (37) for opening and closing the grain supply port (16a).

The grain supply port opening / closing means (37) includes an opening / closing plate (37a) for opening and closing the grain supply port (16a), a rotating member (37b, 37c, 39) for rotating the opening / closing plate (37a), It comprises a switching valve motor (38) that applies a rotational driving action to the rotating members (37b, 37c, 39), and the switching valve motor (38) is operated by a drive signal from the control unit (32). The circulation type grain dryer according to claim 6 made.

The said control part (32) is provided with the grain type setting part (32a), and outputs a drive signal to the switching valve motor (38) according to the grain type set by this grain type setting part (32a). Circulating grain dryer as described in

The grain supply inclined plate (36a) is formed with a grain drop opening (36c), and when the grain is supplied to the grain supply opening (16a), the grain drop opening (36c) is closed by the opening / closing plate (37a). On the other hand, when the grain is allowed to flow down and the grain supply port (16a) is not fed with the grain, the opening and closing plate (37a) is rotated to open the grain drop port (36c) and the thrown The circulation type grain dryer according to any one of claims 1 to 8, wherein the cereal grains are dropped from a grain drop opening (36c).

The top plate (2a) of the storage tank section (2), wherein an outside air intake (2b) is disposed at a position near the side of the grain size selection section (20). A circulating grain dryer according to any one of the above.

The circulation type grain dryer according to claim 10, wherein the outside air intake (2b) is formed in the top plate (2a) in the longitudinal direction at a position near the side of the grain size selection unit (20).