JPH02233148A - Method for drying grain - Google Patents

Method for drying grain

Info

Publication number
JPH02233148A
JPH02233148A JP5446489A JP5446489A JPH02233148A JP H02233148 A JPH02233148 A JP H02233148A JP 5446489 A JP5446489 A JP 5446489A JP 5446489 A JP5446489 A JP 5446489A JP H02233148 A JPH02233148 A JP H02233148A
Authority
JP
Japan
Prior art keywords
drying
rice
raw
brown rice
dried
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5446489A
Other languages
Japanese (ja)
Other versions
JP2864517B2 (en
Inventor
Hidekazu Imamura
英一 今村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=12971395&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPH02233148(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP5446489A priority Critical patent/JP2864517B2/en
Publication of JPH02233148A publication Critical patent/JPH02233148A/en
Application granted granted Critical
Publication of JP2864517B2 publication Critical patent/JP2864517B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To enhance drying efficiency by drying raw unhulled rice up to a predetermined moisture value and applying dehulling treatment to the raw unhulled rice after drying to obtain unpolished rice and drying said unpolished rice up to finish moisture. CONSTITUTION:Raw unhulled rice is charged in the tank 3 of a grain dryer A and dried up to a predetermined moisture value by hot air while recirculated in the dryer by a feed device such as an elevator 2 to bring the surface layer part of the raw unhulled rice to a dry state. Subsequently, the raw unhulled rice is transferred to the receiving hopper 6 of an impeller type huller B to be subjected to dehulling treatment. The unpolished rice thus obtained by dehulling treatment is temporarily received in an unpolished rice receiving tank 7 and subsequently charged in the grain dryer A to be dried up to finish moisture. As a result, drying efficiency is enhanced and the consumption of heat energy and drying time required in drying can be reduced as a whole.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、米や麦などの穀物を乾燥する穀物の乾燥方法
の改良に関する. (従来の技術) 従来、例えば、収穫された刈稲は、脱穀したのち籾のま
ま仕上り水分値まで乾燥する乾燥方法が採用されている
.そして,仕上り水分値まで乾燥した籾は、次に籾すり
して玄米にし、玄米の状態で貯蔵または流通に供する. (発明が解決しようとする課題) ところが、従来のように籾のままの状態で仕上り水分値
まで乾燥する方法では、熱エネルギーを大量に必要とす
ることに加えて乾燥時間も長期化するので、その解決が
望まれていた. そこで、本発明は、この問題を解決する過程で籾よりも
玄米の状態で乾燥すれば乾燥効率がよいという知見を得
た. 本発明は、この知見に基いて乾燥効率を向上し、もって
熱エネルギー消費および乾燥時間の低減化をそれぞれ図
ることを目的とする.(問題点を解決するための手段) この目的を解決するために、本発明方法は、以下のよう
な各工程からなる. (1)生籾を所定水分値まで乾燥する生籾乾燥工程. (2)乾燥後の生籾を脱伴処理して玄米とする脱伴処理
工程. (3)玄米を仕上げ水分まで乾燥する玄米仕上げ工程. (作用) 次に、本発明の作用について説明する.まず、生籾乾燥
工程では、生籾の水分値が所定値(例えば22%)まで
進むので、生籾の表皮である籾からが乾燥状態となる. 次の脱浮処理工程では,生籾は籾がらが乾燥状態にある
ので、脱伴処理し易くなって脱伴率が向上する. さらに、玄米仕上げ工程では,籾がらが除去されている
玄米を乾燥するために水分が抜け易く、籾乾燥の場合に
比べて乾燥効率がよい.従って、本発明では、全体とし
て乾燥に要する熱エネルギー消費および乾燥時間の低減
化を実現できる. (実施例) 次に、本発明乾燥方法を実施するための乾燥システムの
一例について第1図を参照して説明する. この乾燥システムは、第1図に示すように、機内を循環
させながら熱風で穀物を乾燥する循環型の穀物乾燥機A
、および回転翼から放出する籾を脱伴板に衝突させて脱
浮したのち風力によって玄米と籾からとを分離するイン
ペラ型籾摺機Bからなる. 穀物乾燥機Aは、張込用ホッパlを有し、この張込用ホ
ッパlに投入した籾はエレベータ2で上方に搬送してタ
ンク3内に張込む.そして,乾燥中はタンク3の穀物は
エレベータ2などの搬送装置によって機内を循環しつつ
熱風によって乾燥する. 穀物乾燥機Aの上部の穀物搬送路上には、機外に穀物を
排出する排出口を設け、その排出口に開閉自在な開閉弁
4を設けるとともに、その排出口に排出筒5を接続する
.この排出筒5は、その排出口側を移動自在とし、通常
はその排出口をインペラ型籾摺機Bの受取りホッパ6に
のぞませる.また,穀物乾燥機Aには、インペラ型籾摺
機Bから供給される脱浮処理後の玄米を収容する玄米収
容タンク7を併設する.玄米収容タンク7の排出口は張
込用ホッパ1に接続するとともに、その排出口には開閉
自在な開閉弁8を設ける.インペラ型籾摺機Bの排出口
には,脱伴処理後の玄米を玄米収容タンク7に搬送する
玄米搬送装置9を設ける.そして、玄米搬送装置9の排
出口を玄米収容タンク7の上部開口にのぞませる.次に
、このように構成する乾燥システムを使用した穀物の乾
燥法の一例について説明する.まず、開閉弁4および開
閉弁8をいずれも閉じておく.次いで、収穫した高水分
の生籾を穀物乾燥機Aに張込んで乾燥を開始し、その生
籾の水分値が例えば22%というように所定値に達した
ら、ここで生籾の乾燥をいったん終了する.このとき、
生籾はその表層部が乾燥状態となる.次いで、開閉弁4
を開いて穀物乾燥機A内の生籾を排出筒5を経由してイ
ンペラ型籾摺機Bの受取りホッパ6に移送する.そして
,この移送された生籾はインペラ型籾摺機Bで脱伴処理
されて玄米となる. ここで脱浮処理される生籾は、上述のように水分値が所
定値に画一化されるとともにその表層部が乾燥状態にあ
るので,脱伴処理しやすい.しかも、インペラ型籾摺機
Bは、一般に高水分の籾でも高い脱伴率で脱伴処理でき
る.従って、この脱伴処理においては、高い脱伴率が維
持できる. 次に、このように脱浮処理された玄米は玄米収容タンク
7に一時収容され、この後開閉弁8が開くと、玄米は穀
物乾燥機Aに張込まれ乾燥を開始する.このときに、乾
燥される玄米は籾からが除去された状態にあるので、籾
を乾燥するときに比べて水分が抜け易く乾燥効率がよい
. 従って、玄米乾燥は、籾乾燥に比べて乾燥時間が短く乾
燥に要する熱エネルギーも少くてよい.また乾燥温度を
低下させて乾燥時間をかけて乾燥した場合には、乾燥に
要する熱エネルギーは若干増加するものの、玄米の仕上
り品質は格段に向上する. このような玄米乾燥によって、玄米の水分値が仕上り水
分値に達したら穀物乾燥機Aから玄米を取り出す.その
後、玄米の状態で貯蔵または市場に流通させる. (発明の効果) 以上のように本発明では、生籾を所定の水分値まで乾燥
してその表層部を乾燥状態にしたのち、この状態で生籾
を脱伴処理して玄米にし、さらに玄米の状態で仕上り水
分値まで乾燥するようにしたので、乾燥効率が向上して
全体として乾燥に要する熱エネルギー消費および乾燥時
間の低減化を実現できる.
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a grain drying method for drying grains such as rice and wheat. (Prior Art) Conventionally, for example, a drying method has been adopted in which harvested rice is threshed and then finished as paddy and dried to a moisture level. The paddy that has been dried to the finished moisture level is then hulled and made into brown rice, which is then stored or distributed. (Problem to be solved by the invention) However, the conventional method of drying the paddy as it is to the finished moisture level requires a large amount of thermal energy and also takes a long time to dry. A solution was desired. Therefore, in the process of solving this problem, the present invention found that drying efficiency is better if brown rice is dried rather than paddy. The present invention aims to improve drying efficiency based on this knowledge, thereby reducing thermal energy consumption and drying time. (Means for solving the problem) In order to solve this object, the method of the present invention consists of the following steps. (1) Raw paddy drying process in which raw paddy is dried to a predetermined moisture level. (2) De-entraining process in which dry raw paddy is de-entrained to produce brown rice. (3) Brown rice finishing process in which brown rice is dried to its final moisture content. (Operation) Next, the operation of the present invention will be explained. First, in the raw rice drying process, the moisture value of the raw rice reaches a predetermined value (for example, 22%), so that the outer skin of the raw rice becomes dry. In the next deflotation process, the hulls of raw rice are in a dry state, making it easier to defloat and improve the defloat rate. Furthermore, in the brown rice finishing process, since the brown rice is dried from which the chaff has been removed, moisture is easily removed, and the drying efficiency is higher than in the case of drying the paddy. Therefore, in the present invention, it is possible to reduce the thermal energy consumption and drying time required for drying as a whole. (Example) Next, an example of a drying system for carrying out the drying method of the present invention will be described with reference to FIG. As shown in Figure 1, this drying system is a circulating grain dryer A that dries grains with hot air while circulating the inside of the machine.
, and an impeller-type huller B that separates brown rice from the rice using wind force after the rice released from the rotor impinges on a removal plate and floats. The grain dryer A has a loading hopper 1, and the paddy put into the loading hopper 1 is transported upward by an elevator 2 and then loaded into a tank 3. During drying, the grains in tank 3 are circulated within the machine by a transport device such as elevator 2 and dried by hot air. On the grain transport path in the upper part of the grain dryer A, a discharge port is provided for discharging the grains to the outside of the machine, and an on-off valve 4 that can be opened and closed is provided at the discharge port, and a discharge tube 5 is connected to the discharge port. The discharge tube 5 is movable at its discharge port side, and normally the discharge port is exposed to the receiving hopper 6 of the impeller-type huller B. The grain dryer A is also equipped with a brown rice storage tank 7 for storing deflocated brown rice supplied from the impeller-type huller B. The outlet of the brown rice storage tank 7 is connected to the charging hopper 1, and the outlet is provided with an on-off valve 8 that can be opened and closed. A brown rice conveying device 9 is installed at the discharge port of the impeller-type huller B to convey the brown rice after the removal process to the brown rice storage tank 7. Then, the discharge port of the brown rice conveying device 9 is made to look into the upper opening of the brown rice storage tank 7. Next, an example of a grain drying method using the drying system configured as described above will be explained. First, close both the on-off valve 4 and the on-off valve 8. Next, the harvested raw rice with a high moisture content is loaded into the grain dryer A and drying is started. When the moisture value of the raw rice reaches a predetermined value, for example 22%, the raw rice is dried once. finish. At this time,
The surface layer of raw paddy is dry. Next, the on-off valve 4
is opened, and the raw paddy in the grain dryer A is transferred to the receiving hopper 6 of the impeller-type huller B via the discharge tube 5. The transferred raw paddy is then removed by an impeller-type huller B to become brown rice. The raw paddy that is defloated here has a uniform moisture content at a predetermined value as described above, and its surface layer is in a dry state, so it is easy to defloat. Moreover, the impeller-type rice huller B can generally remove grains with a high removal rate even from rice with high moisture content. Therefore, in this degassing process, a high degassing rate can be maintained. Next, the unfloated brown rice is temporarily stored in a brown rice storage tank 7, and when the on-off valve 8 is opened, the brown rice is loaded into the grain dryer A and begins drying. At this time, since the brown rice to be dried has been removed from the paddy, water is removed more easily and the drying efficiency is better than when drying the paddy. Therefore, brown rice drying requires shorter drying time and less heat energy than paddy drying. Furthermore, if the drying temperature is lowered and the drying time is increased, the finished quality of brown rice will be significantly improved, although the thermal energy required for drying will increase slightly. When the moisture value of the brown rice reaches the finished moisture value by drying the brown rice in this manner, the brown rice is taken out from the grain dryer A. The rice is then stored or distributed in the market as brown rice. (Effects of the Invention) As described above, in the present invention, raw paddy is dried to a predetermined moisture level to dry its surface layer, and then the raw paddy is detrained in this state to make brown rice, and then brown rice is further processed. Since drying is performed to the finished moisture value in this condition, the drying efficiency is improved and overall the thermal energy consumption and drying time required for drying can be reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は、本発明法を実施するための乾燥システムの一例
を示す正面図である. A・・・穀物乾燥機、 B・・・インペラ型籾摺機. 特許出願人 井関農機株式会社゛
The drawing is a front view showing an example of a drying system for carrying out the method of the present invention. A... Grain dryer, B... Impeller type huller. Patent applicant Iseki Agricultural Machinery Co., Ltd.

Claims (1)

【特許請求の範囲】 生籾を所定水分値まで乾燥する生籾乾燥工程と、 乾燥後の生籾を脱■処理して玄米とする脱■処理工程と
、 玄米を仕上げ水分まで乾燥する玄米仕上げ工程と、 からなる穀物の乾燥方法。
[Scope of Claims] A raw rice drying process in which raw rice is dried to a predetermined moisture level, a de-■ treatment process in which the dried raw rice is de-treated to produce brown rice, and a brown rice finishing process in which the brown rice is dried to a finished moisture level. A method of drying grains consisting of a process and.
JP5446489A 1989-03-07 1989-03-07 Grain drying method Expired - Lifetime JP2864517B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5446489A JP2864517B2 (en) 1989-03-07 1989-03-07 Grain drying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5446489A JP2864517B2 (en) 1989-03-07 1989-03-07 Grain drying method

Publications (2)

Publication Number Publication Date
JPH02233148A true JPH02233148A (en) 1990-09-14
JP2864517B2 JP2864517B2 (en) 1999-03-03

Family

ID=12971395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5446489A Expired - Lifetime JP2864517B2 (en) 1989-03-07 1989-03-07 Grain drying method

Country Status (1)

Country Link
JP (1) JP2864517B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015226865A (en) * 2014-05-30 2015-12-17 井関農機株式会社 Grain drying and preparing equipment
CN108236981A (en) * 2018-03-12 2018-07-03 沅江市两两香米业有限公司 A kind of processing technology of rice
CN112591485A (en) * 2020-12-16 2021-04-02 重庆市合川区云天食品科技有限公司 Energy-saving wet grain drying method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015226865A (en) * 2014-05-30 2015-12-17 井関農機株式会社 Grain drying and preparing equipment
CN108236981A (en) * 2018-03-12 2018-07-03 沅江市两两香米业有限公司 A kind of processing technology of rice
CN112591485A (en) * 2020-12-16 2021-04-02 重庆市合川区云天食品科技有限公司 Energy-saving wet grain drying method

Also Published As

Publication number Publication date
JP2864517B2 (en) 1999-03-03

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