JP2004290011A

JP2004290011A - Apparatus for hot-water disinfection of rice seed

Info

Publication number: JP2004290011A
Application number: JP2003083267A
Authority: JP
Inventors: Kenzo Kawashima; 謙蔵川島; Hideaki Arakawa; 秀明荒川; Kazuaki Murata; 和昭村田; Toshio Ogawa; 敏雄小川; Yoshihiko Kuroko; 吉彦黒子; Etsuo Hasumi; 悦雄蓮見; Seizo Kawashima; 誠蔵川島
Original assignee: Tiger Kawashima Co Ltd
Current assignee: Tiger Kawashima Co Ltd
Priority date: 2003-03-25
Filing date: 2003-03-25
Publication date: 2004-10-21
Anticipated expiration: 2023-03-25
Also published as: JP3885191B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for hot-water disinfection of rice seeds designed to readily and surely place a rice seed container in a prescribed position on a hot water jetting part or a cold water jetting part when the rice seed container is placed on the hot water jetting part in a hot water tank of a hot water disinfector or the cold water jetting part in a cold water tank of a water cooler. <P>SOLUTION: The apparatus for hot-water disinfection of the rice seeds is composed of the hot water disinfector 1 and the water cooler 36. The apparatus is equipped with the hot water tank 2 provided with a hot water jetting part 8 for jetting hot water in the interior and the perforated rice seed container 29 housing the rice seeds to be disinfected and placing the rice seed container 29 on the hot water jetting part 8 in the hot water tank 2. A guide part 31 guiding the rice seed container 29 lowered from the upper part to the prescribed position on the hot water jetting part 8 is installed on the periphery of the hot water jetting part 8. The guide part 31 is composed of standing bodies 32 arranged so as to contact the peripheral surface of the rice seed container 29. The tops of the standing bodies 32 form leading parts 33 opening to the outside. A guide part similar to the guide part 31 is provided even in the cold water tank of the water cooler. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、種籾を温湯に浸して種籾の表面に付着しまたは籾殻と果皮との間に潜む病原菌（いもち病、ばか苗病、苗立枯細菌病、ごま葉枯病、褐条病、もみ枯細菌病などの病原菌が主な例である）を殺菌、滅菌または除菌（以下、消毒という）する種籾の温湯消毒装置に関するものである。
【０００２】
【従来の技術】
種籾を所定温度の温湯に所定時間浸すことにより、種籾の表面に付着または籾殻と果皮との間に潜む病原菌を消毒する装置としては、特開２０００−３１６３２１号公報または特開２０００−３４２０１８号公報に記載されているものが知られており、種籾を収容した種籾容器を自走クレーンで吊り下げて温湯タンクに出し入れする種籾の温湯消毒装置は、特開平１１−３１８１１８号公報に記載されている。また、芋もの野菜種子の滅菌装置であって種子をバスケットに入れてその下方から上方に温水を貫流させて滅菌処理し、滅菌処理後に種子をいれたままバスケットの下方から上方に冷水を貫流させて冷却処理するものは、特開平８−９７１４号公報に記載されている。
【０００３】
【発明が解決しようとする課題】
前掲の特開２０００−３１６３２１号公報、特開２０００−３４２０１８号公報または特開平８−９７１４号公報に記載されている種籾の消毒装置おいては、温湯タンクに張った温湯に種籾を単に浸すだけでなく、種籾に噴き上げる温湯を浴びせることにより、種籾の温湯消毒を確実にし、かつその効果の向上を図っているものである。すなわち、これら種籾の温湯消毒装置おいては、温湯タンク内に温湯噴き上げ部を設けてあり、種籾の温湯消毒にあたっては、種籾を収容した種籾容器を温湯噴き上げ部上に降ろして定位置に載せなければならないが、温湯タンク内には温湯が張られているので、その揺れに伴う複雑な光屈折作用や湯気が立ちこめるなどのほか、消毒作業を何度も繰り返すことにより温湯が汚濁してくるなどのために、温湯タンクの上から種籾容器を温湯噴き上げ部上の定位置に降ろしにくいのが実情である。特に、特開平１１−３１８１１８号公報に示すように、種籾容器の上げ下ろしに走行クレーンを用いるものにあっては、温湯噴き上げ部に対する種籾容器の位置合わせがいっそう困難である。このことは温湯消毒後の種籾を冷水に浸して冷却する冷水タンクにおいても同様に問題である。
【０００４】
そこで、本発明は、温湯タンク内の温湯噴き上げ部の周囲に、消毒する種籾を収容した多孔状の種籾容器を温湯噴き上げ部上の定位置に案内する案内部を設けて、その案内部の上端部が温湯タンク内の温水面上に常に露出するように構成したことにより、温湯タンク内の温湯噴き上げ部に種籾容器を載せる際に、種籾容器を温湯噴き上げ部上の定位置に容易かつ確実に載せることができる種籾の温湯消毒装置を提供することを目的とする。
【０００５】
また、本発明は、冷水タンク内の冷水噴き上げ部の周囲に、種籾を収容した多孔状の種籾容器を冷水噴き上げ部上の定位置に案内する案内部を設けて、その案内部の上端部が冷水タンク内の冷水面上に常に露出するように構成したことにより、冷水タンク内の冷水噴き上げ部に種籾容器を載せる際に、種籾容器を冷水噴き上げ部上の定位置に容易かつ確実に載せることができる種籾の温湯消毒装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するため、本発明は次の種籾の温湯消毒装置を提供する。すなわち、請求項１に係るものは、種籾を温湯に浸して消毒する温湯消毒機と、温湯消毒機で温湯消毒した種籾を冷水に浸して冷却する水冷機とを備えて成る種籾の温湯消毒装置であって、温湯消毒機は、内部に温湯を噴き上げる温湯噴き上げ部を設けた温湯タンクと、温湯タンク内の温湯噴き上げ部の周囲に、消毒する種籾を収容した多孔状の種籾容器を温湯噴き上げ部上の定位置に案内する案内部を設けて成り、上記案内部は、その上端部が温湯タンク内の温水面上に露出するように構成されていることを特徴とする種籾の温湯消毒装置である。
【０００７】
請求項２に係る種籾の温湯消毒装置は、請求項１の構成において、案内部は、種籾容器の周面に接するように配置した起立体で成り、起立体の上端は外方に開いた誘導部を成していることを特徴とするものである。
【０００８】
請求項３に係る種籾の温湯消毒装置は、請求項１または２の構成において、温湯噴き上げ部および種籾容器は方形状であって、案内部は温湯噴き上げ部の四隅に対応して配置した起立体で構成されていることを特徴とするものである。
【０００９】
請求項４に係る種籾の温湯消毒装置は、請求項３の構成において、案内部は、四隅に配置した起立体に囲み枠を形成して成ることを特徴とするものである。
【００１０】
請求項５に係る種籾の温湯消毒装置は、請求項１ないし４のいずれかの構成において、温湯タンクには、案内部の上端部が温湯タンク内の温水面上に露出する一定温水位に保つオーバーブローを備えており、オーバーフローを温湯タンクの排水管に接続してあることを特徴とするものである。
【００１１】
請求項６に係る種籾の温湯消毒装置は、請求項１ないし５のいずれかの構成において、種籾容器は、温湯タンクの上方を走行するクレーンにより吊持して温湯噴き上げ部上に降ろすように構成されていることを特徴とするものである。
【００１２】
また、請求項７に係るものは、種籾を温湯に浸して消毒する温湯消毒機と、温湯消毒機で温湯消毒した種籾を冷水に浸して冷却する水冷機とを備えて成る種籾の温湯消毒装置であって、水冷機は、内部に冷水を噴き上げる冷水噴き上げ部を設けた冷水タンクと、冷水タンク内の冷水噴き上げ部の周囲に、消毒する種籾を収容した多孔状の種籾容器を冷水噴き上げ部上の定位置に案内する案内部を設けて成り、上記案内部は、その上端部が冷水タンク内の冷水面上に露出するように構成されていることを特徴とするものである。
【００１３】
請求項８に係る種籾の温湯消毒装置は、請求項７の構成において、案内部は、種籾容器の周面に接するように配置した起立体で成り、起立体の上端は外方に開いた誘導部を成していることを特徴とするものである。
【００１４】
請求項９に係る種籾の温湯消毒装置は、請求項７または８の構成において、温湯噴き上げ部および種籾容器は方形状であって、案内部は冷水噴き上げ部の四隅に対応して配置した起立体で構成されていることを特徴とするものである。
【００１５】
請求項１０に係る種籾の温湯消毒装置は、請求項９の構成において、案内部は、四隅に配置した起立体に囲み枠を形成して成ることを特徴とするものである。
【００１６】
請求項１１に係る種籾の温湯消毒装置は、請求項７ないし１０の構成において、冷水タンクには、案内部の上端部が冷水タンク内の冷水面上に露出する一定冷水位に保つオーバーブローを備えており、オーバーフローを冷水タンクの排水管に接続してあることを特徴とするものである。
【００１７】
請求項１２に係る種籾の温湯消毒装置は、請求項７ないし１１の構成において、種籾容器は、冷水タンクの上方を走行するクレーンにより吊持して冷水噴き上げ部上に降ろすように構成されていることを特徴とするものである。
【００１８】
【発明の実施の形態】
図１は本発明の一実施の形態に係る種籾の温湯消毒装置を構成する温湯消毒機の断面図、図２は同上平面図、図３は同上斜視図、図４は温湯タンクの概略断面図、図５は同上作業態様を示す斜視図、図６は温湯が汚濁した状態を示す斜視図、図７は温湯消毒装置を構成する水冷機の斜視図、図８は冷水が汚濁した状態を示す斜視図、図９は冷水タンクの概略断面図、図１０は作業用のクレーンを備えた温湯消毒装置の構成を示す概念図である。
【００１９】
本発明に係る種籾の温湯消毒装置は、温湯消毒機１、後述する水冷機および同じく作業用のクレーンを備えて成るものである。温湯消毒機１は、温湯タンク２、給湯制御機３を備えており、４は温湯循環口である。温湯タンク２内には、多孔状のスノコ５が底面との間に一定の高さを成すように配置されており、温湯タンク２内の底面とスノコ５との間が温湯流下室６を成し、スノコ５の上が温湯貯留室７を成している。温湯タンク２の温湯貯留室７には、上面に多数の温湯噴出孔をあけた温湯噴き上げ部８を形成している。温湯タンク２は、二重壁構造であってその中空部には断熱材を充填し、保温性を向上させてある。
【００２０】
給湯制御機３は、給湯器９を内蔵しており、給湯器９はＵ字状の電気ヒータ１０を備えている。上記各給湯器９の温湯送出口１１と前記温湯噴き上げ部８とは温湯送出管１２により接続され、各給湯器９の下部はモータポンプ１３の送出側に温湯戻し管１４により接続されており、さらにモータポンプ１３の吸入側は温湯吸入管１５により温湯タンク２の温湯流下室６に連通させてある。そして、この構成によって、モータポンプ１３により温湯タンク２の温湯流下室６から吸入された温湯は給湯器９において、予め設定した所定の温湯消毒温度の温湯が給湯されるように加熱制御されたうえ、温湯噴き上げ部８内に加圧給湯されて、温湯噴き上げ部８の上面から噴射され、噴射された温湯は温湯貯留室７からスノコ５を通して温湯流下室６に流下する経路で繰り返し循環されることになる。
【００２１】
給湯器９にはフロートスイッチ１６を内臓しており、給湯器９内が所定水位のときのみ電気ヒータ１０に通電するように、後述の温湯制御器１７により制御される構成としてある。
【００２２】
給湯制御機３は、その上部に温湯制御器１７を内蔵しており、この温湯制御器１７により各給湯器９の電気ヒータ１０への通電を制御して、温湯噴き上げ部８に給湯される温湯の温度を所定の温容消毒温度に保つように成っている。温湯制御器１７は、その上面にタイマーを始動するスタートボタン１８とリセットボタン１９を備えている。温湯タンク２には、給湯制御装置３の設置側以外の適宜側面に移動配置可能な操作器２０が備えられており、そのスタートボタン２１とリセットボタン２２は、温湯制御器１７のスタートボタン１８とリセットボタン１９とそれぞれ連動しているので、温湯制御器１７から離れてもタイマー始動操作と停止操作が可能である。
【００２３】
２３はガス給湯器である。このガス給湯器２３は、種籾の温湯消毒作業開始前に温湯タンク２に所定温度の温湯を張るためのものである。前記温湯制御機３とガス給湯器２３はそれらを一体にユニット化して、温湯タンク２の一側に固定して併設してある。２４は上記ユニット化のための台構造体である。２５は給湯管、２６はガス給湯器２３への給水管、２７は温湯タンク２のオーバーフロー口、２８はオーバーフロー管である。オーバーフロー管２８は透光性（透明または半透明）の可撓管からなり、オーバーフローの状況が外部から観察できるように成っている。
【００２４】
上記ガス給湯器２３は、種籾の温湯消毒作業開始前に温湯タンク２に所定温度の温湯を張るためのものであるから、比較的熱容量の大きいものであれば、必ずしも熱源がガスでなくてもよいが、熱効率が高くかつエネルギー価格の低い熱源であることが望ましい。この点で一般的にはガスが適しているが、例えば、灯油給湯器であったり、低価格の夜間電力を利用して夜間に湯を沸かしておいてそれを用いることもよいし、太陽熱などの自然エネルギーの活用も考えられる。
【００２５】
ガス給湯器２３により種籾の温湯消毒作業開始前に温湯タンク２に張る温湯の温度は、種籾の温湯消毒温度よりやや低い温度とし、温湯制御機３により所定の温湯消毒温度に保つのが一般的である。しかし、ガス給湯器２３から温湯タンク２に温湯の温度を高めにして所定の水位よりやや低い水位まで給湯し、それに冷水を足して温湯タンク２内の温湯を所定の温湯消毒温度とすることも可能である。そして、このような態様は、例えば夜間電力によって夜間に湯を沸かして使用する場合などに好適であるし、温湯タンク２内の温湯を速やかに所定の温度に調整することができるという利点がある。また、寒冷地においては、ガス給湯器２３から常時給湯あるいは適時間間隔の給湯によって、温湯タンク２内の温湯の温度を所定の温度に保つことも行われる。
【００２６】
２９は種籾容器である。この種籾容器２９は底面および側面が多孔状であり、消毒する種籾を網袋に入れまたはそのまま直に収容して温湯タンク２内の温湯噴き上げ部８上に載置する。３０はその吊りアームである。
【００２７】
温湯タンク２内の温湯噴き上げ部８には、その周囲に上方から降ろす種籾容器２９を温湯噴き上げ部８上の定位置に案内する案内部３１を設けてある。この案内部３１は、種籾容器２９の周面、図示の実施の形態では種籾容器２９の四隅の稜線を挟んだ面に接するように温湯噴き上げ部８の四隅に配置した４つの起立体３２で成り、起立体３２の上端は外方に開いた誘導部３３を成している。誘導部３３は、垂直面に対して２０°〜６０°程度で外方に傾斜しているが、その傾斜角度は４５°程度が種籾容器２９の円滑な下降案内のうえで好適である。上記案内部３１は、四隅に配置した起立体３２に囲み枠３４を形成して成るものである。
【００２８】
温湯タンク２内で開口するオーバーフロー口２７は、上記案内部３１の起立体３２の上端部、すなわち誘導部３３の全体またはその一部が温水面より露出する位置で開口しており（図４参照）、オーバーフロー管３２は温湯タンク２の排水管３５に接続されていて、オーバーフローされる温水が排水管３５から排出されるように成っている。
【００２９】
本発明に係る種籾の温湯消毒装置を構成する水冷機３６は、温湯消毒機１で所定時間温湯消毒した種籾を冷水に浸して急速冷却するためのものである。温湯消毒後の種籾は、温湯消毒時の高い温度のままにしておくと種籾の発芽率が低下したり、また発芽障害を起こすので、温湯消毒後はできるだけ速やかにかつ全体を均等に冷却する必要がある。
【００３０】
本発明に係る水冷機３６はその要求を満たすものである。水冷機３６は、図７に示すように、冷水タンク３７に冷水を所要の水圧に加圧して給水する給水機３８を備えて構成され、冷水タンク３７内は、その底部をスノコ３９で区画して上部を冷水貯留部４０、下部を冷水還流部４１とし、スノコ３９上には冷水噴き上げ部４２が備えられていて、給水機３８のポンプ４３から給水管４４を通して加圧給水される冷水が冷水噴き上げ部４２の上面から冷水貯留部４０内に噴き上がるように構成されている。冷水貯留部４０内に噴き上がった冷水は冷水貯留部４０内で対流を繰り返したうえスノコ３９を通して冷水還流部４１に流下し、冷水戻り管４５を経て給水機３８のポンプ４３に戻流するように成っている。給水管４４には上水道からの給水口４６が設けられていて、この給水口４６から常時または適当な時間間隔で冷水を給水するが、上水道と給水口４６との間は、貯水タンク（図示せず）を介して中継するか、あるいは逆流防止手段を介在させて、給水機３８から上水道への逆流防止を図るものとする。
【００３１】
冷水噴き上げ部４２には、その周囲に上方から降ろす種籾容器２９を冷水噴き上げ部４２上の定位置に案内する案内部４７を設けてある。この案内部４７は、種籾容器２９の周面、図示の実施の形態では種籾容器２９の四隅の稜線を挟んだ面に接するように冷水噴き上げ部４２の四隅に配置した４つの起立体４８で成り、起立体４８の上端は外方に開いた誘導部４９を成している。誘導部４９は、垂直面に対して２０°〜６０°程度で外方に傾斜しているが、その傾斜角度は４５°程度が種籾容器２９の円滑な下降案内のうえで好適である。上記案内部４７において四隅に配置した起立体４８に囲み枠を形成していることは、温湯タンク２における構成と同様である。
【００３２】
冷水タンク３７の底壁には排水管５０が接続されており、その排水管５０の冷水タンク３７内における排水口５１にはオーバーフロー管５２が接続されていて、冷水タンク３７内で開口するオーバーフロー口５３は、上記案内部４７の起立体４８の上端部、すなわち誘導部４９の全体またはその一部が冷水面より露出する位置で開口している。図示の実施の形態においては、排水管５０にオーバーフロー管５２が抜き差し自在と成っていて、オーバーフロー管５２を抜くと排水管５０が開口するようにしてあるが、排水手段とオーバーフロー手段は、必ずしもそのようなものでなくてもよい。
【００３３】
本発明に係る種籾の温湯消毒装置１においては、前記のように、その温湯タンク２内の温湯噴き上げ部８に種籾容器２９を定位置に案内する案内部３１が設けられており、その起立体３２の上端は外方に開いた誘導部３３を成しているので、クレーン５４により吊り下げて温湯タンク２の上に移動させた種籾容器２９を温湯噴き上げ部８上に概略的な位置合わせをするだけで、種籾容器２９を温湯噴き上げ部８の上の定位置に載置することができる。なお、クレーン５４において、５５はガイドレール、５６は自走体、５７は下げフック、５８は操作制御器である。
【００３４】
そして、温湯タンク２内において、案内部３１の起立体３２の上端部、すなわち誘導部３３は、常時温水面から露出しているので、温湯タンク２内の温水が汚濁してきても、種籾容器２９を温湯噴き上げ部８上の定位置に載置する作業に支障を生じないし、容易かつ確実にその作業を行うことができる。
【００３５】
また、冷水タンク３７内においても、その冷水タンク３７内の冷水噴き上げ部４０に種籾容器２９を定位置に案内する案内部４７が設けられており、その起立体４８の上端は外方に開いた誘導部４９を成しているので、クレーン５４により吊り下げて冷水タンク３７上に移動させた種籾容器２９を冷水噴き上げ部４２上に概略的な位置合わせをするだけで、種籾容器２９を冷水噴き上げ部４２上の定位置に的確に載置することができる。すなわち、クレーン５４により冷水タンク３７上に移動させた種籾容器２９の冷水噴き上げ部４２に対する正確な位置合わせの必要がないところから、種籾容器２９を滞りなく冷水噴き上げ部４２上に載置することができるので、温湯消毒後の種籾の急速な冷却に大きく寄与するものとなる。
【００３６】
そして、冷水タンク３７内において、案内部４７の起立体４８の上端部、すなわち誘導部４９は、常時冷水面から露出しているので、冷水タンク３７内の冷水が汚濁してきても、種籾容器２９を冷水噴き上げ部４２上の定位置に載置する作業に支障を生じないし、容易かつ確実にその作業を行うことができる。
【００３７】
温湯消毒機１における所定の温湯消毒温度は５０℃〜６５℃の範囲内、種籾の温湯への浸漬時間は５分〜２０分の範囲内でそれぞれ特定値に設定するが、温湯消毒温度が低いときは消毒時間を長く、かつ温度が高いときは消毒時間を短く設定する。ちなみに、各種試験データからその一例を示せば、温湯消毒温度が５８℃では消毒時間が１５分、６０℃では１０分、６２℃では５分とするのが好適である。
【００３８】
水冷機３６における冷水温度は、２０°以下で氷結しない範囲であればよいが、温湯消毒後の種籾を急速に冷却するうえで水温が低いほうがよく、また流水状態であることが好ましい。
【００３９】
なお、本発明に係る温湯タンク２および給湯制御装置３を、種籾を温湯に浸して発芽を促す催芽にも使用する場合には、温湯制御温度を０〜３５℃または０〜５０℃の温度設定範囲、保護上限温度３７℃または５２℃の機能を兼ね備えたものとする。
【００４０】
【発明の効果】
本発明によれば、温湯タンク内の温湯噴き上げ部の周囲に、消毒する種籾を収容した多孔状の種籾容器を温湯噴き上げ部上の定位置に案内する案内部を設けて、その案内部の上端部が温湯タンク内の温水面上に常に露出するように構成したことにより、温湯タンク内の温湯噴き上げ部に種籾容器を載せる際に、種籾容器を温湯噴き上げ部上の定位置に容易かつ確実に載せることができる。
【００４１】
また、本発明によれば、冷水タンク内の冷水噴き上げ部の周囲に、種籾を収容した多孔状の種籾容器を冷水噴き上げ部上の定位置に案内する案内部を設けて、その案内部の上端部が冷水タンク内の冷水面上に常に露出するように構成したことにより、冷水タンク内の冷水噴き上げ部に種籾容器を載せる際に、種籾容器を冷水噴き上げ部上の定位置に容易かつ確実に載せることができる。
【図面の簡単な説明】
【図１】本発明の一実施の形態に係る種籾の温湯消毒装置を構成する温湯消毒機の断面図である。
【図２】同上平面図である。
【図３】同上斜視図である。
【図４】温湯タンクの概略断面図である。
【図５】同上作業態様を示す斜視図である。
【図６】温湯が汚濁した状態を示す斜視図である。
【図７】温湯消毒装置を構成する水冷機の斜視図である。
【図８】冷水が汚濁した状態を示す斜視図である。
【図９】冷水タンクの概略断面図である。
【図１０】作業用のクレーンを備えた温湯消毒装置の構成を示す概念図である。
【符号の説明】
１温湯消毒機
２温湯タンク
３給湯制御機
４温湯循環口
５スノコ
６温湯流下室
７温湯貯留室
８温湯噴き上げ部
９給湯器
１０電気ヒータ
１１温湯送出口
１２温湯送出管
１３モータポンプ
１４温湯戻し管
１５温湯吸入管
１６フロートスイッチ
１７温湯制御器
１８スタートボタン
１９リセットボタン
２０操作器
２１スタートボタン
２２リセットボタン
２３ガス給湯器
２４台構造体
２５給湯管
２６給水管
２７オーバーフロー口
２８オーバーフロー管
２９種籾容器
３０吊りアーム
３１案内部
３２起立体
３３誘導部
３４囲み枠
３５排水管
３６水冷機
３７冷水タンク
３８給水機
３９スノコ
４０冷水貯留部
４１冷水還流部
４２冷水噴き上げ部
４３ポンプ
４４給水管
４５冷水戻り管
４６給水口
４７案内部
４８起立体
４９誘導部
５０排水管
５１排水口
５２オーバーフロー管
５３オーバーフロー口
５４クレーン
５５ガイドレール
５６自走体
５７下げフック
５８操作制御器[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a method for cultivating pathogens (rice blast, stunt seedling disease, bacterial wilt disease, sesame leaf blight, brown streak, fir that adhere to the surface of seed hull by immersing seed husk in hot water or lurking between chaff and pericarp). The present invention relates to a hot water disinfecting apparatus for seed rice that sterilizes, sterilizes, or removes (pathogens such as blight bacterial germs are major examples).
[0002]
[Prior art]
JP-A-2000-316321 or JP-A-2000-342018 discloses a device for disinfecting pathogens that adhere to the surface of seed rice or lurch between rice husk and pericarp by immersing the seed rice in hot water at a predetermined temperature for a predetermined time. And a hot water disinfection device for seed rice that suspends a seed rice container containing seed rice with a self-propelled crane and puts it in and out of a hot water tank is described in JP-A-11-318118. . In addition, it is a sterilizer of vegetable seeds of potatoes, in which seeds are put into a basket, hot water is allowed to flow upward from below and sterilized, and cold water is allowed to flow upward from below the basket with the seeds left after sterilization. The cooling process is described in JP-A-8-9714.
[0003]
[Problems to be solved by the invention]
In the seed rice disinfection apparatus described in JP-A-2000-316321, JP-A-2000-342018 or JP-A-8-9714, the seed rice is simply immersed in hot water stretched over a hot water tank. Instead, the seed rice is immersed in hot water to blow up, thereby ensuring the disinfection of the seed rice in hot water and improving its effect. That is, in these hot rice disinfecting apparatuses for seed rice, a hot water spraying section is provided in a hot water tank. In hot water disinfection of seed rice, the seed rice container containing the seed rice must be lowered onto the hot water blowing section and placed in a fixed position. The hot water tank is filled with hot water, which creates complicated light refraction and steam that accompanies the shaking.In addition, the hot water becomes contaminated by repeated disinfection operations. Therefore, it is difficult to lower the seed paddy container from the hot water tank to a fixed position on the hot water spouting section. In particular, as disclosed in Japanese Patent Application Laid-Open No. H11-318118, in the case of using a traveling crane for raising and lowering the seed rice container, it is more difficult to align the seed rice container with respect to the hot water blow-up portion. This is also a problem in a cold water tank in which seed rice after hot water disinfection is immersed and cooled in cold water.
[0004]
Therefore, the present invention provides a guide portion for guiding a porous seed rice container containing seed rice to be disinfected to a fixed position on the hot water blow-up portion, around the hot water blow-up portion in the hot water tank, and an upper end of the guide portion. Part is always exposed on the hot water surface in the hot water tank, so that when placing the seed rice container on the hot water spouting part in the hot water tank, the seed rice container is easily and reliably placed in a fixed position on the hot water spouting part. It is an object of the present invention to provide a hot water disinfection device for seed rice that can be placed.
[0005]
Further, the present invention provides a guide section for guiding a porous seed rice container containing seed rice to a fixed position on the cold water blow-up section, around the cold water blow-up section in the cold water tank, and an upper end of the guide section is provided. By being configured to always be exposed on the cold water surface in the cold water tank, when placing the seed rice container on the cold water spraying section in the cold water tank, the seed rice container can be easily and reliably placed in the fixed position on the cold water blowing section. It is an object of the present invention to provide a hot water disinfecting apparatus for seed rice that can produce rice.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides the following hot water disinfection apparatus for seed rice. That is, the apparatus according to claim 1 is a hot water disinfecting apparatus for seed rice, comprising: a hot water disinfecting machine for immersing seed rice in hot water for disinfection; and a water cooling machine for immersing seed rice in hot water for disinfection in cold water to cool the seed rice. The hot water disinfecting machine includes a hot water tank having a hot water blowing section for blowing hot water therein, and a porous seed container containing seed rice to be disinfected around the hot water blowing section in the hot water tank. A hot water disinfecting apparatus for seed rice, wherein a guide portion for guiding to a fixed position is provided, and the upper end portion is configured to be exposed on a hot water surface in a hot water tank. is there.
[0007]
In the hot water disinfecting apparatus for seed rice according to claim 2, in the configuration of claim 1, the guide portion is formed by a stereoscopic body arranged so as to be in contact with the peripheral surface of the seed rice container, and the upper end of the stereoscopic solid body is guided outward. It is characterized by forming a part.
[0008]
A hot water disinfection apparatus for seed rice according to claim 3 is the configuration according to claim 1 or 2, wherein the hot water blow-up unit and the seed rice container are rectangular, and the guide units are arranged corresponding to the four corners of the hot water blow-up unit. It is characterized by comprising.
[0009]
According to a fourth aspect of the present invention, there is provided the hot water disinfection apparatus for rice seeds, wherein the guide portion is formed by forming an enclosing frame in the three-dimensional space disposed at the four corners.
[0010]
The hot water disinfection apparatus for seed rice according to claim 5 is the hot water tank according to any one of claims 1 to 4, wherein the hot water tank maintains a constant hot water level at which the upper end of the guide portion is exposed on a hot water surface in the hot water tank. An overblow is provided, and the overflow is connected to a drain pipe of a hot water tank.
[0011]
The hot-water disinfection apparatus for seed rice according to claim 6 is configured such that in the configuration according to any one of claims 1 to 5, the seed-pad container is hung by a crane running above the hot water tank and dropped onto the hot-water spouting unit. It is characterized by having been done.
[0012]
A hot water disinfecting apparatus for seed rice, comprising: a hot water disinfecting machine for immersing seed rice in hot water for disinfection, and a water cooling machine for immersing seed rice in hot water for disinfection in cold water for cooling. The water cooler is provided with a cold water tank having a cold water blowing section for blowing cold water therein, and a porous seed container containing sterilized seed rice around the cold water blowing section in the cold water tank. The guide portion is provided so as to be guided to a predetermined position, and the upper end portion of the guide portion is configured to be exposed on the cold water surface in the cold water tank.
[0013]
In the apparatus for disinfecting hot water of seed rice according to claim 8, in the configuration of claim 7, the guide portion is formed by an extruded body arranged so as to be in contact with the peripheral surface of the seed rice container, and the upper end of the propelled solid is an outwardly opened guide. It is characterized by forming a part.
[0014]
In the hot water disinfection apparatus for seed rice according to claim 9, in the configuration according to claim 7 or 8, the hot water blow-up unit and the seed rice container are rectangular, and the guide unit is disposed corresponding to the four corners of the cold water blow-up unit. It is characterized by comprising.
[0015]
According to a tenth aspect of the present invention, there is provided the hot water disinfection apparatus for seed rice according to the ninth aspect, wherein the guide portion is formed by forming an enclosing frame on the three-dimensionally arranged three-dimensionally arranged.
[0016]
In the hot water disinfection apparatus for seed rice according to claim 11, in the configuration of claims 7 to 10, the cold water tank includes an overblow that maintains a constant cold water level where the upper end of the guide portion is exposed on the cold water surface in the cold water tank. And an overflow is connected to a drain pipe of the cold water tank.
[0017]
The hot water disinfection apparatus for seed rice according to claim 12 is configured such that in the configuration of claims 7 to 11, the seed rice container is hung by a crane traveling above the cold water tank and dropped onto the cold water blow-up unit. It is characterized by the following.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a sectional view of a hot water disinfecting machine constituting a hot water disinfecting apparatus for seed rice according to one embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a perspective view of the same, and FIG. , FIG. 5 is a perspective view showing the same working mode, FIG. 6 is a perspective view showing a state in which hot water is contaminated, FIG. 7 is a perspective view of a water cooler constituting the hot water disinfection apparatus, and FIG. 8 is a state in which cold water is contaminated. FIG. 9 is a perspective view, FIG. 9 is a schematic sectional view of a cold water tank, and FIG. 10 is a conceptual diagram showing a configuration of a hot water disinfection apparatus provided with a working crane.
[0019]
The hot rice disinfection apparatus for seed rice according to the present invention includes a hot water disinfection machine 1, a water cooler described below, and a working crane. The hot water disinfecting machine 1 includes a hot water tank 2 and a hot water supply controller 3, and 4 is a hot water circulation port. In the hot water tank 2, a porous snowboard 5 is arranged so as to have a certain height between the hot water tank 2 and the bottom surface, and the space between the bottom surface in the hot water tank 2 and the snowboard 5 forms a hot water flowing down chamber 6. The top of the snowboard 5 forms a hot water storage chamber 7. The hot water storage chamber 7 of the hot water tank 2 is provided with a hot water blowing section 8 having a large number of hot water blowing holes formed on the upper surface. The hot water tank 2 has a double wall structure, and its hollow portion is filled with a heat insulating material to improve heat retention.
[0020]
The hot water supply controller 3 has a built-in water heater 9, and the water heater 9 has a U-shaped electric heater 10. The hot water outlet 11 of each of the water heaters 9 and the hot water blow-up section 8 are connected by a hot water delivery pipe 12, and the lower part of each water heater 9 is connected to a delivery side of a motor pump 13 by a hot water return pipe 14. Further, the suction side of the motor pump 13 is connected to the hot water flowing down chamber 6 of the hot water tank 2 by a hot water suction pipe 15. With this configuration, the hot water sucked from the hot water flow-down chamber 6 of the hot water tank 2 by the motor pump 13 is heated and controlled in the water heater 9 so that hot water having a predetermined hot water disinfection temperature is supplied. The hot water is pressurized and supplied into the hot water blow-up unit 8 and is injected from the upper surface of the hot water blow-up unit 8, and the injected hot water is repeatedly circulated in a path flowing down from the hot water storage chamber 7 to the hot water flowing down chamber 6 through the vamp 5. become.
[0021]
The water heater 9 has a built-in float switch 16 and is controlled by a hot water controller 17 described later so that the electric heater 10 is energized only when the inside of the water heater 9 is at a predetermined water level.
[0022]
The hot water controller 3 has a built-in hot water controller 17 at an upper portion thereof. The hot water controller 17 controls energization of the electric heater 10 of each water heater 9 to supply hot water to the hot water blow-up unit 8. Is maintained at a predetermined temperature. The hot water controller 17 has a start button 18 for starting a timer and a reset button 19 on its upper surface. The hot water tank 2 is provided with an operation device 20 which can be moved and arranged on an appropriate side surface other than the installation side of the hot water supply control device 3. The start button 21 and the reset button 22 are provided with the start button 18 of the hot water controller 17 and the start button 18. Since they are linked with the reset button 19, the timer start operation and the stop operation can be performed even when the user is away from the hot water controller 17.
[0023]
23 is a gas water heater. The gas water heater 23 is for supplying hot water of a predetermined temperature to the hot water tank 2 before starting the hot water disinfection operation of the seed rice. The hot water controller 3 and the gas water heater 23 are integrally unitized and fixedly provided on one side of the hot water tank 2. Reference numeral 24 denotes a platform structure for unitization. 25 is a hot water supply pipe, 26 is a water supply pipe to the gas water heater 23, 27 is an overflow port of the hot water tank 2, and 28 is an overflow pipe. The overflow tube 28 is formed of a light-transmissive (transparent or translucent) flexible tube so that the state of overflow can be observed from the outside.
[0024]
The gas water heater 23 is used to fill the hot water tank 2 with hot water at a predetermined temperature before starting the hot water disinfection operation of the seed rice, so that the heat source is not necessarily gas if the heat source is relatively large. Although good, a heat source with high thermal efficiency and low energy cost is desirable. In this regard, gas is generally suitable, but for example, a kerosene water heater, or it is also possible to use hot water at night by using low-cost nighttime electricity and use it, Utilization of natural energy can be considered.
[0025]
Before the hot water disinfection operation of the seed rice by the gas water heater 23, the temperature of the hot water applied to the hot water tank 2 is set to a temperature slightly lower than the hot water disinfection temperature of the seed rice, and is generally maintained at a predetermined hot water disinfection temperature by the hot water controller 3. It is. However, it is also possible to raise the temperature of the hot water from the gas water heater 23 to the hot water tank 2 and supply the hot water to a water level slightly lower than a predetermined water level, and add cold water to the hot water in the hot water tank 2 to obtain a predetermined hot water disinfection temperature. It is possible. Such a mode is suitable, for example, when boiling water is used at night with electric power at night, and has the advantage that the hot water in the hot water tank 2 can be quickly adjusted to a predetermined temperature. . Further, in a cold region, the temperature of the hot water in the hot water tank 2 is maintained at a predetermined temperature by always supplying hot water from the gas water heater 23 or supplying water at appropriate time intervals.
[0026]
29 is a seed rice container. The seed rice container 29 has a porous bottom and side surfaces. The seed rice to be disinfected is put in a mesh bag or directly accommodated therein and placed on the hot water blowing unit 8 in the hot water tank 2. Reference numeral 30 denotes the suspension arm.
[0027]
The hot-water spouting unit 8 in the hot-water tank 2 is provided with a guide unit 31 for guiding a seed rice container 29 to be dropped from above to a fixed position on the hot-water spouting unit 8. The guide portion 31 is composed of four raised solids 32 arranged at the four corners of the hot water blow-up section 8 so as to be in contact with the peripheral surface of the seed rice container 29, in the illustrated embodiment, the surface sandwiching the four corner ridges of the seed rice container 29. The upper end of the three-dimensional space 32 forms a guiding portion 33 that opens outward. The guide portion 33 is inclined outwardly at about 20 ° to 60 ° with respect to the vertical plane, and the inclination angle is about 45 °, which is suitable for smoothly descending and guiding the seed rice container 29. The guide portion 31 is formed by forming an enclosing frame 34 on a stereoscopic body 32 arranged at four corners.
[0028]
The overflow port 27 that opens in the hot water tank 2 opens at the upper end of the stereoscopic body 32 of the guide portion 31, that is, at a position where the whole or a part of the guide portion 33 is exposed from the hot water surface (see FIG. 4). The overflow pipe 32 is connected to the drain pipe 35 of the hot water tank 2 so that the overflowed hot water is discharged from the drain pipe 35.
[0029]
The water cooler 36 constituting the hot rice disinfection apparatus for seed rice according to the present invention is for immersing the seed rice, which has been disinfected by the hot water disinfection machine 1 for a predetermined time, in cold water for rapid cooling. Seed rice after hot water disinfection, if left at the high temperature at the time of hot water disinfection, will reduce the germination rate of seed rice or cause germination failure, so it is necessary to cool the whole rice as soon as possible and evenly after disinfection There is.
[0030]
The water cooler 36 according to the present invention satisfies the demand. As shown in FIG. 7, the water cooler 36 is provided with a water supply 38 that pressurizes cold water to a required water pressure in a cold water tank 37 and supplies the water to the cold water tank 37. The upper part is a cold water storage part 40, the lower part is a cold water recirculation part 41, and a cold water blow-up part 42 is provided on the snowboard 39, and the cold water pressurized and supplied from the pump 43 of the water supply device 38 through the water supply pipe 44 is cooled water. It is configured to blow up from the upper surface of the blowing section 42 into the cold water storage section 40. The chilled water spouted into the chilled water storage unit 40 repeats convection in the chilled water storage unit 40, flows down to the chilled water recirculation unit 41 through the saw blade 39, and returns to the pump 43 of the water supply device 38 via the chilled water return pipe 45. It consists of The water supply pipe 44 is provided with a water supply port 46 from a water supply, and cool water is supplied from the water supply 46 constantly or at an appropriate time interval. A water storage tank (not shown) is provided between the water supply and the water supply port 46. ), Or a backflow preventing means is interposed to prevent the backflow from the water supply device 38 to the water supply.
[0031]
The cold water blow-up section 42 is provided with a guide section 47 for guiding the seed rice container 29 to be dropped from above around the cold water blow-up section 42 to a fixed position on the cold water blow-up section 42. The guide portion 47 is composed of four raised solids 48 arranged at the four corners of the cold water blow-up portion 42 so as to be in contact with the peripheral surface of the seed rice container 29, in the illustrated embodiment, the surface sandwiching the four corners of the seed rice container 29. The upper end of the stereoscopic body 48 forms a guiding portion 49 that opens outward. The guide portion 49 is inclined outwardly at about 20 ° to 60 ° with respect to the vertical plane, and the inclination angle thereof is preferably about 45 ° from the viewpoint of smoothly descending and guiding the seed rice container 29. The fact that the surrounding frame is formed on the raised solid 48 arranged at the four corners in the guide section 47 is the same as the configuration of the hot water tank 2.
[0032]
A drain pipe 50 is connected to the bottom wall of the cold water tank 37, and an overflow pipe 52 is connected to a drain port 51 in the cold water tank 37 of the drain pipe 50, and an overflow port that opens in the cold water tank 37. Reference numeral 53 denotes an opening at the upper end of the stereoscopic body 48 of the guide part 47, that is, at a position where the whole or a part of the guide part 49 is exposed from the cold water surface. In the illustrated embodiment, the overflow pipe 52 can be freely inserted into and removed from the drain pipe 50, and when the overflow pipe 52 is pulled out, the drain pipe 50 is opened. However, the drain means and the overflow means are not necessarily provided. It does not need to be.
[0033]
In the hot water disinfection apparatus 1 for seed rice according to the present invention, as described above, the hot water blow-up section 8 in the hot water tank 2 is provided with the guide portion 31 for guiding the seed rice container 29 to a fixed position. Since the upper end of 32 forms a guiding portion 33 that is opened outward, the seed rice container 29 suspended by the crane 54 and moved onto the hot water tank 2 is roughly aligned on the hot water blowing-up portion 8. By simply doing so, the seed rice container 29 can be placed at a fixed position above the hot water blowing unit 8. In the crane 54, 55 is a guide rail, 56 is a self-propelled body, 57 is a lowering hook, and 58 is an operation controller.
[0034]
In the hot water tank 2, since the upper end of the three-dimensional body 32 of the guide portion 31, that is, the guide portion 33 is always exposed from the hot water surface, even if the hot water in the hot water tank 2 becomes polluted, the seed rice container 29 Does not hinder the work of placing the water in a fixed position on the hot water blow-up unit 8, and the work can be performed easily and reliably.
[0035]
Further, also in the cold water tank 37, a guide portion 47 for guiding the seed rice container 29 to a fixed position is provided in the cold water blow-up portion 40 in the cold water tank 37, and the upper end of the raised solid 48 is opened outward. Since the guiding part 49 is formed, the seed rice container 29 suspended by the crane 54 and moved onto the cold water tank 37 is roughly aligned on the cold water blowing part 42, and the seed rice container 29 is blown with cold water. It can be accurately placed at a fixed position on the part 42. That is, since there is no need to accurately position the seed rice container 29 moved onto the cold water tank 37 by the crane 54 with respect to the cold water blowing unit 42, the seed rice container 29 can be placed on the cold water blowing unit 42 without delay. As it is possible, it greatly contributes to rapid cooling of seed rice after hot water disinfection.
[0036]
In the chilled water tank 37, the upper end of the raised body 48 of the guide portion 47, that is, the guide portion 49 is always exposed from the chilled water surface. Does not hinder the work of placing the in a fixed position on the cold water blow-up unit 42, and the work can be performed easily and reliably.
[0037]
The predetermined hot water disinfecting temperature in the hot water disinfecting machine 1 is set to a specific value in the range of 50 ° C. to 65 ° C., and the immersion time of the seed rice in the hot water is set to a specific value in the range of 5 to 20 minutes, but the hot water disinfecting temperature is low. In this case, the disinfection time is set longer, and when the temperature is high, the disinfection time is set shorter. Incidentally, if an example is shown from various test data, it is preferable that the disinfection time is 15 minutes at a hot water disinfection temperature of 58 ° C., 10 minutes at 60 ° C., and 5 minutes at 62 ° C.
[0038]
The cold water temperature in the water cooler 36 may be in a range of not more than 20 ° and not freezing, but it is preferable that the water temperature is low in order to rapidly cool the seed rice after hot water disinfection, and it is preferable that the seed rice is in a running water state.
[0039]
When the hot water tank 2 and the hot water supply control device 3 according to the present invention are also used for germination to promote germination by immersing seed rice in hot water, the hot water control temperature is set to 0 to 35 ° C or 0 to 50 ° C. Range and protection upper limit temperature 37 ° C or 52 ° C.
[0040]
【The invention's effect】
According to the present invention, a guide portion for guiding a porous seed rice container containing seed rice to be disinfected to a fixed position on the hot water blow-up portion is provided around the hot water blow-up portion in the hot water tank, and the upper end of the guide portion is provided. Part is always exposed on the hot water surface in the hot water tank, so that when placing the seed rice container on the hot water spouting part in the hot water tank, the seed rice container is easily and reliably placed in a fixed position on the hot water spouting part. Can be placed.
[0041]
Further, according to the present invention, a guide portion for guiding a porous seed rice container containing seed rice to a fixed position on the cold water blowing portion is provided around the cold water blowing portion in the cold water tank, and the upper end of the guiding portion is provided. Part is always exposed on the cold water surface in the cold water tank, so that when placing the seed rice container on the cold water blowing part in the cold water tank, the seed rice container is easily and reliably placed in the fixed position on the cold water blowing part. Can be placed.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a hot water disinfecting machine constituting a hot water disinfection apparatus for seed rice according to one embodiment of the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a perspective view of the same.
FIG. 4 is a schematic sectional view of a hot water tank.
FIG. 5 is a perspective view showing a work mode of the same.
FIG. 6 is a perspective view showing a state in which hot water is contaminated.
FIG. 7 is a perspective view of a water cooler constituting the hot water disinfection apparatus.
FIG. 8 is a perspective view showing a state in which cold water is contaminated.
FIG. 9 is a schematic sectional view of a cold water tank.
FIG. 10 is a conceptual diagram showing a configuration of a hot water disinfection device including a working crane.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hot-water disinfection machine 2 Hot-water tank 3 Hot-water supply controller 4 Hot-water circulation port 5 Snorkel 6 Hot-water falling room 7 Hot-water storage room 8 Hot-water spouting part 9 Hot-water heater 10 Electric heater 11 Hot-water outlet 12 Hot-water delivery pipe 13 Motor pump 14 Hot-water return pipe 15 Hot water suction pipe 16 Float switch 17 Hot water controller 18 Start button 19 Reset button 20 Operator 21 Start button 22 Reset button 23 Gas water heater 24 Base structure 25 Hot water pipe 26 Water supply pipe 27 Overflow port 28 Overflow pipe 29 Seed paddy container 30 Suspension arm 31 Guide part 32 Raised body 33 Guide part 34 Surrounding frame 35 Drain pipe 36 Water cooler 37 Cold water tank 38 Water supply 39 Snowboard 40 Cold water storage part 41 Cold water recirculation part 42 Cold water blow-up part 43 Pump 44 Water supply pipe 45 Cold water return pipe 46 Water supply port 47 Guide section 48 Raised space 49 Guide section 5 0 Drain pipe 51 Drain port 52 Overflow pipe 53 Overflow port 54 Crane 55 Guide rail 56 Self-propelled body 57 Lowering hook 58 Operation controller

Claims

A hot water disinfecting device for seed rice, comprising a hot water disinfecting machine for disinfecting seed rice by immersing it in hot water, and a water cooling device for immersing seed rice in hot water for disinfection in cold water for cooling. A hot water tank provided with a hot water blow-up unit that blows hot water into the hot water tank, and a guide unit that guides a porous seed rice container containing seed rice to be disinfected to a fixed position on the hot water blow-up unit around the hot water blow-up unit in the hot water tank A hot water disinfecting apparatus for seed rice, wherein the guide portion is configured such that an upper end thereof is exposed on a hot water surface in a hot water tank.

The hot water for seed rice according to claim 1, wherein the guide portion is formed of a solid body arranged so as to be in contact with a peripheral surface of the seed rice container, and an upper end of the solid body forms an outwardly open guiding portion. Disinfection equipment.

3. The hot water disinfection of seed rice according to claim 1 or 2, wherein the hot water blow-up portion and the seed rice container are rectangular, and the guide portion is configured by three-dimensional bodies arranged corresponding to four corners of the hot water blow-up portion. apparatus.

The hot water disinfecting apparatus for seed rice according to claim 3, wherein the guide portion is formed by forming an enclosing frame in a three-dimensional body arranged at four corners.

The hot water tank has an overblow that keeps the upper end of the guide at a constant hot water level exposed on the hot water surface in the hot water tank, and the overflow is connected to a drain pipe of the hot water tank. A hot water disinfection apparatus for seed rice according to any one of claims 1 to 4.

The hot rice disinfection apparatus for seed rice according to any one of claims 1 to 5, wherein the seed rice container is configured to be hung by a crane traveling above the hot water tank and lowered onto the hot water blow-up unit. .

A hot water disinfecting apparatus for seed rice, comprising a hot water disinfecting machine for immersing seed rice in hot water for disinfection, and a water cooling device for immersing seed rice in hot water for disinfection in cold water to cool the seed rice. A chilled water tank with a chilled water spouting section for spouting chilled water and a guide section around the chilled water spouting section in the chilled water tank are provided to guide a porous seed rice container containing seeds to be disinfected to a fixed position on the chilled water blowing section. A hot water disinfection apparatus for seed rice, wherein the guide portion is configured such that an upper end thereof is exposed on a cold water surface in a cold water tank.

8. The hot water for seed rice according to claim 7, wherein the guide part is formed of a solid body arranged so as to be in contact with the peripheral surface of the seed rice container, and the upper end of the solid body forms an outwardly open guiding part. Disinfection equipment.

9. The hot water disinfection of seed rice according to claim 7 or 8, wherein the hot water blow-up portion and the seed rice container are rectangular, and the guide portion is configured by a three-dimensional body arranged corresponding to the four corners of the cold water blow-up portion. apparatus.

10. The hot water disinfection apparatus for seed rice according to claim 9, wherein the guide portion is formed by forming an enclosing frame in a three-dimensional body arranged at four corners.

The chilled water tank is provided with an overblow that keeps the upper end of the guide at a constant chilled water level exposed on the chilled water surface in the chilled water tank, and the overflow is connected to a drain pipe of the chilled water tank. A hot water disinfection apparatus for seed rice according to any one of claims 7 to 10.

The hot rice disinfection apparatus for seed rice according to any one of claims 7 to 11, wherein the seed rice container is configured to be suspended by a crane traveling above the cold water tank and lowered onto the cold water blow-up unit. .