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CN109405517A - A kind of low temperature drying method for raw grain - Google Patents

A kind of low temperature drying method for raw grain Download PDF

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Publication number
CN109405517A
CN109405517A CN201811299559.3A CN201811299559A CN109405517A CN 109405517 A CN109405517 A CN 109405517A CN 201811299559 A CN201811299559 A CN 201811299559A CN 109405517 A CN109405517 A CN 109405517A
Authority
CN
China
Prior art keywords
raw grain
low temperature
drying
wind
grain
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.)
Pending
Application number
CN201811299559.3A
Other languages
Chinese (zh)
Inventor
王建宁
郜志军
李志华
刘伟
徐超
杨小彦
王志新
王帅
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.)
NINGXIA HAOWANG RICE INDUSTRY GROUP Co Ltd
Original Assignee
NINGXIA HAOWANG RICE INDUSTRY GROUP 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
Application filed by NINGXIA HAOWANG RICE INDUSTRY GROUP Co Ltd filed Critical NINGXIA HAOWANG RICE INDUSTRY GROUP Co Ltd
Priority to CN201811299559.3A priority Critical patent/CN109405517A/en
Publication of CN109405517A publication Critical patent/CN109405517A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/16Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials passing down a heated surface, e.g. fluid-heated closed ducts or other heating elements in contact with the moving stack of material
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B9/00Preservation of edible seeds, e.g. cereals
    • A23B9/08Drying; Subsequent reconstitution
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02BPREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B1/00Preparing grain for milling or like processes
    • B02B1/02Dry treatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02BPREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B1/00Preparing grain for milling or like processes
    • B02B1/08Conditioning grain with respect to temperature or water content
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08Humidity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10Temperature; Pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22Controlling the drying process in dependence on liquid content of solid materials or objects
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/06Grains, e.g. cereals, wheat, rice, corn

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Storage Of Harvested Produce (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The invention discloses a kind of low temperature drying methods for raw grain, including cleaning impurity, low temperature drying, cooling three steps, raw grain is dried by low-temperature circulating wind, and pass through temperature measuring equipment dynamic monitoring wind-warm syndrome and raw grain temperature, controlling wind-warm syndrome is 50-70 DEG C, and control raw grain temperature is no more than 40 DEG C, monitors the moisture content in raw grain by device for detecting water content, when water content reaches 13-14.5%, stop drying.The paddy for keeping moisture content high to efficient uniform of the present invention reaches safe storage standard by low temperature drying, both ensure that the safe storage of raw grain, in turn ensures the freshness and Taste quality of rice.The generation for phenomena such as preventing traditional artificial sunning paddy to be mixed into uneven sundries, paddy moisture drying and mildew.

Description

A kind of low temperature drying method for raw grain
Technical field
The present invention relates to rice manufacture fields, and in particular to a kind of low temperature drying method for raw grain.
Background technique
Rice enters the harvest season, since from field harvesting Rice Kernel Moisture Content, between 18%-25%, peasant household is harvested Rice must be dried, and traditional artificial sunning paddy relies on seriously place and weather, and loss is big.Artificial sunning relies primarily on Sunlight sunning, the serious restriction of this traditional drying mode climate and place, meanwhile, with Rice Production scale collection Reduction process deepens continuously, and harvester largely uses, and the cereal amount harvested in the unit time greatly increases, some large plantation families The deficiency of dring yard area is confined to agricultural cooperative society, make harvest a large amount of fresh damp grains be stacked, cannot get and When be dried, cause paddy to go mouldy.The traditional artificial sunning rice drying time is long simultaneously, high labor cost, and drying is not Uniformly, it cannot be guaranteed that safe moisture rate, percentage of damage is high, is easy to be mixed into the sundries such as native stone in the drying process.
Summary of the invention
To solve the above-mentioned problems, the present invention provides it is a kind of guarantee cereal safe storage, not by weather and environment shadow The loud low temperature drying method for raw grain.
To achieve the goals above, technical solution of the present invention is as follows:
A kind of low temperature drying method for raw grain, comprising the following steps:
S1, cleaning impurity: after harvested raw grain removes impurity by impurity cleaning device, into wet granary;
S2, low temperature drying: the raw grain in wet granary, into low temperature drier, is followed by transporting apparatus transports by low temperature Ring wind dries raw grain, and by temperature measuring equipment dynamic monitoring wind-warm syndrome and raw grain temperature, control wind-warm syndrome is 50-70 DEG C, control Raw grain temperature processed is no more than 40 DEG C, monitors the moisture content in raw grain by device for detecting water content, reaches 13- in water content When 14.5%, stop drying;
S3, cooling: being transported to gulch storehouse for the raw grain dried, and after raw grain is all cooling, then is transported to repository.
The present invention dries raw grain by 50-70 DEG C of low-temperature circulating wind, and controls raw grain temperature and be no more than 40 DEG C, 50-70 DEG C of moisture content be dried in raw grain, meter Zhi Jia after drying crack rice few.Also, water content 13-14.5%, it is convenient into The storage of row raw grain, while can ensure that grain quality.
Preferably, in S2 step, low temperature drying process is in such a way that drying and tempering interval carry out.
Tempering, which refers in drying course, enters soaking zone from drying section, hands over the humidity in particle internal temperature and grain Changing makes its uniform process, can guarantee the uniformity of raw grain drying by way of drying and carrying out with tempering interval, while Reduce injury of the drying course for raw grain nutritional ingredient.
Preferably, include the elevator for raw grain to be promoted to eminence in S2 step, in low temperature drier, provide Raw grain temperature measuring equipment and the water content inspection of bottom in low temperature drier is arranged in the ventilating system of low-temperature circulating wind from bottom to top Device is surveyed, the wind-warm syndrome detection device of low temperature drier inner wall is set.
Raw grain is transported to eminence by elevator, raw grain during falling from top to bottom, in low temperature drier Low-temperature circulating wind flows through from bottom to top, is then monitored to the temperature and humidity of raw grain, reaches standard and then transports from discharge port; Do not reach standard and then pass through elevator and be transported to eminence and is dried again.
It is dried in raw grain dynamic process, so that the drying course of raw grain is more uniform, avoids static drying may The surface that will appear and the internal non-uniform situation of drying.
Preferably, in S2 step, the raw grain in wet granary, into low temperature drier, is used by transporting apparatus transports Dispersion impeller by raw grain it is evenly dispersed after, pass through multiple feed inlets simultaneously disperse to feed, raw grain is dried by low-temperature circulating wind It is dry.
By uniformly spreading raw grain out, makes temperature suffered by every paddy all identical, cereal is allowed uniformly to dry, paddy after drying Good evenness.
Preferably, in S2 step, low temperature drier siphons away damp and hot wind by air intake device.
Damp and hot wind is siphoned away in time, on the one hand facilitates to reduce raw grain temperature, on the one hand guaranteeing to be air-dried helps to add Fast drying course.
Preferably, in S2 step, low temperature drier keeps cold-hot wind uniform by air mixing device.
It by air mixing device, can ensure that the air themperature in low temperature drier is uniform, and then ensure that raw grain is dried Effect is uniform.In addition, also facilitating the monitoring to device Inside Air Temperature, to reach precise control of temperature.
Preferably, in S2 step, device for detecting water content carries out dynamic prison to water content by resistance-type measurement method It surveys.
Using resistance-type measurement method, moisture content, autostop when setting value is arrived in drying, dynamic detection drying are accurately detected When cereal moisture percentage, prevent from excessively drying, it can be ensured that grain quality, reduction should excessively dry the wave for causing cereal weightlessness and the energy Take.
Preferably, in S1 step, harvested raw grain first passes through receiving sieve and carries out first time screening, then passes through vibrating screen After carrying out programmed screening, wet granary is entered back into.
Beneficial effects of the present invention are as follows:
(1) paddy for making moisture content high reaches safe storage standard by low temperature drying, both ensure that the safety storage of raw grain Hiding, in turn ensures the freshness and Taste quality of rice.
(2) drying effect is uniform, and the uniformity of raw grain drying is higher.
(3) phenomena such as preventing traditional artificial sunning paddy to be mixed into uneven sundries, paddy moisture drying and mildew Occur.
Specific embodiment
Embodiment 1
A kind of low temperature drying method for raw grain, comprising the following steps:
S1, cleaning impurity: harvested raw grain first passes through receiving sieve and carries out first time screening, then passes through vibrating screen progress the After postsearch screening, wet granary is entered back into.
S2, low temperature drying: the raw grain in wet granary, into low temperature drier, is opened low temperature and dried by transporting apparatus transports Raw grain, the feed inlet of the low temperature drier of eminence is transported to by elevator by the heat source key of equipment for drying, will using dispersion impeller After raw grain is evenly dispersed, disperse to feed simultaneously by multiple feed inlets, raw grain during falling from top to bottom, low temperature drying dress Low-temperature circulating wind in setting flows through from bottom to top, is then monitored to the temperature and humidity of raw grain, reaches standard then from discharging Mouth transports;Do not reach standard and then pass through elevator and be transported to eminence and is dried again.Using drying with tempering interval into Capable mode dries raw grain, and by temperature measuring equipment dynamic monitoring wind-warm syndrome and raw grain temperature, control wind-warm syndrome is 50 DEG C, control Raw grain temperature processed is no more than 40 DEG C, and device for detecting water content monitors the moisture content in raw grain by resistance-type measurement method, When water content reaches 14.5%, stop drying.In the process, damp and hot wind is siphoned away by air intake device, is made by air mixing device Cold-hot wind is uniform.
S3, cooling: being transported to gulch storehouse for the raw grain dried, for 24 hours after, after raw grain is all cooling, then be transported to storage Storehouse.
By drying raw grain quality testing, rice freshness reaches 90% or more, and White Rice Taste value reaches 80 or more, passes through Tracing detection is carried out to raw grain after drying, drying moisture 14.5% reaches the standard of safe storage, and rice amount reaches 71.6%, contains Head milled rice amount reaches 65%, small by broken 1.6%, in broken 2.1%, big broken 7.5%.
Embodiment 2
A kind of low temperature drying method for raw grain, comprising the following steps:
S1, cleaning impurity: harvested raw grain first passes through receiving sieve and carries out first time screening, then passes through vibrating screen progress the After postsearch screening, wet granary is entered back into.
S2, low temperature drying: the raw grain in wet granary, into low temperature drier, is opened low temperature and dried by transporting apparatus transports Raw grain, the feed inlet of the low temperature drier of eminence is transported to by elevator by the heat source key of equipment for drying, will using dispersion impeller After raw grain is evenly dispersed, disperse to feed simultaneously by multiple feed inlets, raw grain during falling from top to bottom, low temperature drying dress Low-temperature circulating wind in setting flows through from bottom to top, is then monitored to the temperature and humidity of raw grain, reaches standard then from discharging Mouth transports;Do not reach standard and then pass through elevator and be transported to eminence and is dried again.Using drying with tempering interval into Capable mode dries raw grain, and by temperature measuring equipment dynamic monitoring wind-warm syndrome and raw grain temperature, control wind-warm syndrome is 70 DEG C, control Raw grain temperature processed is no more than 40 DEG C, and device for detecting water content monitors the moisture content in raw grain by resistance-type measurement method, When water content reaches 13%, stop drying.In the process, damp and hot wind is siphoned away by air intake device, is made by air mixing device cold Hot wind is uniform.
S3, cooling: being transported to gulch storehouse for the raw grain dried, for 24 hours after, after raw grain is all cooling, then be transported to storage Storehouse.
By drying raw grain quality testing, rice freshness reaches 90% or more, and White Rice Taste value reaches 80 or more, passes through Tracing detection is carried out to raw grain after drying, drying moisture 13% reaches the standard of safe storage, and rice amount reaches 70.3%, containing whole Polished rice amount reaches 62%, small by broken 1.7%, in broken 2.3%, big broken 7.7%.
Above-described embodiment is merely exemplary for the purpose of the present invention, and and not restrictive, its object is to allow be familiar with this The understanding of technology cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.Not In the case where being detached from claim limited range, those of ordinary skill in the art understand, any modification, the change that can be made Change or equivalent, will fall within the scope of protection of the present invention.

Claims (8)

1. a kind of low temperature drying method for raw grain, it is characterised in that: the following steps are included:
S1, cleaning impurity: after harvested raw grain removes impurity by impurity cleaning device, into wet granary;
S2, low temperature drying: the raw grain in the wet granary, into low temperature drier, is followed by transporting apparatus transports by low temperature Ring wind dries raw grain, and by temperature measuring equipment dynamic monitoring wind-warm syndrome and raw grain temperature, control wind-warm syndrome is 50-70 DEG C, control Raw grain temperature processed is no more than 40 DEG C, monitors the moisture content in raw grain by device for detecting water content, reaches 13- in water content When 14.5%, stop drying;
S3, cooling: being transported to gulch storehouse for the raw grain dried, and after raw grain is all cooling, then is transported to repository.
2. a kind of low temperature drying method for raw grain according to claim 1, it is characterised in that: in the S2 step In, the low temperature drying process is in such a way that drying and tempering interval carry out.
3. a kind of low temperature drying method for raw grain described in any one of -2 according to claim 1, it is characterised in that: in institute It states in S2 step, includes the elevator for raw grain to be promoted to eminence in the low temperature drier, provide low from bottom to top The raw grain temperature measuring equipment and aqueous amount detection device of bottom in the low temperature drier is arranged in the ventilating system of warm circulated air It sets, the wind-warm syndrome detection device of the low temperature drier inner wall is set.
4. a kind of low temperature drying method for raw grain according to any one of claim 1-3, it is characterised in that: in institute It states in S2 step, the raw grain in the wet granary passes through transporting apparatus transports into low temperature drier, will be former using dispersion impeller After grain is evenly dispersed, disperses to feed simultaneously by multiple feed inlets, raw grain is dried by low-temperature circulating wind.
5. a kind of low temperature drying method for raw grain described in any one of -4 according to claim 1, it is characterised in that: in institute It states in S2 step, the low temperature drier siphons away damp and hot wind by air intake device.
6. a kind of low temperature drying method for raw grain according to any one of claims 1-5, it is characterised in that: in institute It states in S2 step, the low temperature drier keeps cold-hot wind uniform by air mixing device.
7. a kind of low temperature drying method for raw grain according to claim 1 to 6, it is characterised in that: in institute It states in S2 step, the device for detecting water content carries out dynamic monitoring to water content by resistance-type measurement method.
8. a kind of low temperature drying method for raw grain described in any one of -7 according to claim 1, it is characterised in that: in institute It states in S1 step, harvested raw grain first passes through receiving sieve and carries out first time screening, then carries out programmed screening by vibrating screen Afterwards, wet granary is entered back into.
CN201811299559.3A 2018-11-02 2018-11-02 A kind of low temperature drying method for raw grain Pending CN109405517A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111165576A (en) * 2020-03-24 2020-05-19 四川省农业机械研究设计院 Method for reducing loss after grain harvest
CN112179125A (en) * 2020-10-15 2021-01-05 河南科技大学 Grain drying method and system
CN114009560A (en) * 2021-12-18 2022-02-08 安徽华国堂生物科技有限公司 Combined rice bean, gordon euryale seed and coix seed tea

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CN101731327A (en) * 2010-01-05 2010-06-16 华南农业大学 Centralized drying system of high-humidity grain and drying method thereof
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CN102919352A (en) * 2012-11-09 2013-02-13 衡山泰通白云现代农业发展科技有限公司 Grain drying system
CN108064490A (en) * 2017-12-13 2018-05-25 顾松龙 A kind of collection storage method applied to cereal seed
CN108097590A (en) * 2017-12-07 2018-06-01 湖北金穗长丰粮食机械设备有限公司 A kind of raw grain pretreatment system of grain postpartum service centre

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DE3619910A1 (en) * 1986-06-13 1987-12-17 Baywa Ag Method for the ventilation drying of corn, rape and other cereals
CN101731327A (en) * 2010-01-05 2010-06-16 华南农业大学 Centralized drying system of high-humidity grain and drying method thereof
US20120246967A1 (en) * 2011-03-29 2012-10-04 Nicholson Hirzel Heat recovery system
CN102919352A (en) * 2012-11-09 2013-02-13 衡山泰通白云现代农业发展科技有限公司 Grain drying system
CN108097590A (en) * 2017-12-07 2018-06-01 湖北金穗长丰粮食机械设备有限公司 A kind of raw grain pretreatment system of grain postpartum service centre
CN108064490A (en) * 2017-12-13 2018-05-25 顾松龙 A kind of collection storage method applied to cereal seed

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Title
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广西壮族自治区农业机械化技术推广总站: "《广西农机化适用技术推广应用指南》", 30 November 2008 *
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111165576A (en) * 2020-03-24 2020-05-19 四川省农业机械研究设计院 Method for reducing loss after grain harvest
CN112179125A (en) * 2020-10-15 2021-01-05 河南科技大学 Grain drying method and system
CN114009560A (en) * 2021-12-18 2022-02-08 安徽华国堂生物科技有限公司 Combined rice bean, gordon euryale seed and coix seed tea

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Application publication date: 20190301

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