CN105910391A - Screen-type combined air drying method - Google Patents
Screen-type combined air drying method Download PDFInfo
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- CN105910391A CN105910391A CN201610230324.3A CN201610230324A CN105910391A CN 105910391 A CN105910391 A CN 105910391A CN 201610230324 A CN201610230324 A CN 201610230324A CN 105910391 A CN105910391 A CN 105910391A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007605 air drying Methods 0.000 title claims abstract description 13
- 238000001291 vacuum drying Methods 0.000 claims abstract description 6
- 240000008042 Zea mays Species 0.000 claims description 33
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 33
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 33
- 235000005822 corn Nutrition 0.000 claims description 33
- 238000012216 screening Methods 0.000 claims description 33
- 238000003860 storage Methods 0.000 claims description 27
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000009792 diffusion process Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 206010044565 Tremor Diseases 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000007373 indentation Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 4
- 235000013339 cereals Nutrition 0.000 abstract 3
- 238000007664 blowing Methods 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 26
- 238000010586 diagram Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/282—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens their jigging movement being a closed or open curvilinear path in a plane perpendicular to the plane of the screen and parrallel or transverse to the direction of conveyance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/30—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro within their own plane in or approximately in or transverse to the direction of conveyance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
- F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Microbiology (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a screen-type combined air drying method. The method includes vibrating a screen bed for drying cereal in a layering manner, adopting a near-infrared analyzer for detecting moisture content of cereal and realizing precise control of air speed of an air blower through controlling shield volume of a blowing port. Besides, a low temperature vacuum drying method is combined, so that uneven drying is avoided effectively. The drying effect is ensured and cereal quality is guaranteed.
Description
Technical field
The present invention relates to corn drying field, particularly relate to a kind of combination air-dry method.
Background technology
Grain, in order to safe storage must carry out dehydrate, reaches safe moisture, just can prevent
Go rotten during storage rotten.Dry in view of current grain drying equipment is mostly high temperature, not only impair
Grain quality, and technological process is complicated, and production cost is high, and operation easier is big, and current foodstuff preservation sets
The standby i.e. research of air-dry machine has been obtained for paying close attention to widely, and has the most reached certain research level,
But it is bad to there is also certain problem, such as processability of product structure simultaneously, structure is complicated, it is difficult to realize batch
Manufacture；Additionally majority all uses coal or electrical heating, consumes energy higher, and inherently without departing from being dried
The operation principle of machine, is therefore badly in need of a kind of low temperature drying method, both can guarantee that drying effect, and do not affected
Grain quality.
Summary of the invention
The present invention has designed and developed a kind of screening type combination air-dry method, it is an object of the invention to paddy
Thing carries out screening layering and is dried, and effectively prevent uneven drying.
A further object of the invention is the amount of blocking by controlling air channel plate, regulates wind speed, precisely controls
Drying time processed.
A further object of the invention is the mode using low-temperature air-drying and vacuum drying to combine, and effectively protects
Demonstrate,prove drying effect.
The technical scheme that the present invention provides is:
A kind of screening type combination air-dry method, including:
Step one: opening vibrations screening bed, the vibrations time is 15 points～25 points, is used for corn according to water
Dividing content to be layered, the corn making moisture high is positioned at bottom, and the corn that moisture is low is positioned at top
Layer；
Step 2: corn flows out from described vibrations screening bed bottom discharge valve, closes after opening 3 points～5 points,
It is dried for corn being carried out layering；
Step 3: use near-infrared grain analyzer to measure moisture Wa flowing out cornn；
Step 4: by the amount of the blocking S of regulation air channel platewi, regulate the wind speed of corresponding n-th dryer section,
Wherein SmFor the air channel pipeline gross area, the height on h the n-th dryer section air outlet distance ground；α is for going out
Air port deflection angle, vplFor hair-dryer wind speed, F is hair-dryer air outlet sectional area；For corn density,
TrwiFor penetrating coefficient；
Step 5: according to grain moisture water content Wa of detectionnWith target water content Wa0, when setting air-dried
Between
T=λ (Wan-Wa0)QallLwa/K·γ·μeα
Wherein QallGross weight for corn；α is dryer section quantity；μ is hair-dryer wind speed；；K is Bohr
The most graceful constant；γ is the rehydration ratio of corn；LwaDepress for standard atmosphere, the heat needed for evaporation unit moisture
Amount；λ is for air-drying factor, and unit is m/K.
Preferably, described vibrations screening bed includes:
Screen box；
Vibrations frame, it is arranged on bottom rocking trough, including telescopic of two be arranged on bottom rocking trough
Dagger；
Motor, it connects described vibrations frame, and it is by controlling the indentation of said two support column and stretching out
Amount makes described rocking trough vertical tremor.
Vibrator, it is arranged in screen box, is used for driving screen box vertical tremor.
Preferably, the frequency of described vibrations screening bed is 335HZ～485HZ.
Preferably, also including vacuum drying method after described step 5, it comprises the following steps:
Step one: the corn after air-drying is placed in storage tank；
Step 2: use storage tank described in heating devices heat, and use radiation temperature measurement device to carry out temperature
Detection, temperature stops heating after being increased to 55～65 DEG C；
Step 3: vacuum pump extracts the air in described storage tank, so that the moisture on described thing to be dried is waved
Sending out, the extraction time is
Wherein P is hydrone pressure；P0For atmospheric pressure；NAFor diffusion rate；The R drift factor, its
For constant, Z is the collision probability of unit area hydrone；K is Boltzmann constant；T is temperature；m
For corn gross weight to be dried；D is diffusion coefficient；δ is the heat diffusion rate of unit area.
Preferably, during described heater utilizes Far-infrared Heating, microwave heating and Electromagnetic Heating
Kind.
Preferably, described vacuum pump is diffusion pump, molecular pump, ejector pump, rotary-vane vaccum pump and cold
One in solidifying pump.
Preferably, described storage tank is closed cell.
Preferably, described storage tank is provided with heat preservation sandwich layer.
Preferably, it is 15KPa～25KPa by the pressure range in described storage tank.
Beneficial effect of the present invention
1, screening type of the present invention combination air-dry machine uses screening type vibrating bed to be layered corn
It is dried, it is achieved being fine-tuned of moisture.
2, the environmental factors that the present invention is considered is more fully, uses low-temperature vacuum drying to air-dry with combination type
The mode that combines, it is to avoid uneven drying.
3, screening type of the present invention combination air-dry machine simple in construction, easy for installation, cost is relatively low, this
In system, model parameter can be adjusted flexibly for different situations, has widened the applicable surface of model, tool
There is stronger marketing.
Accompanying drawing explanation
Fig. 1 is the front view of screening type of the present invention combination air-dry machine.
Fig. 2 is screening type vibrating bed structural representation of the present invention.
Fig. 3 is the stereochemical structure installation diagram of combination type air-dry machine of the present invention.
Fig. 4 is the side view of combination type air-dry machine of the present invention.
Fig. 5 is the stereochemical structure installation diagram of grain storage mechanism of the present invention.
Fig. 6 is the upper first trapezoidal guide board structure schematic diagram of grain storage mechanism of the present invention.
Fig. 7 is the stereochemical structure installation diagram of an air-dried mechanism of the present invention.
Fig. 8 is the Standard figure after multiple air-dried mechanisms of the present invention assemble.
Fig. 9 is the upper second trapezoidal guide board structure schematic diagram of air-dried mechanism of the present invention.
Figure 10 is cylindrical shape air exhausting net pipeline configuration schematic diagram in air-dried mechanism of the present invention.
Figure 11 is draining crop mechanism stereochemical structure installation diagram of the present invention.
Figure 12 is the structural representation of ladder type main air duct in air draft mechanism of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art's reference
Description word can be implemented according to this.
As it is shown in figure 1, the screening type combination air-dry machine that the present invention provides includes, vibrations screening bed 100,
Reserves mechanism 200, air-dried mechanism 300, draining crop mechanism 400 and air draft mechanism 500.
As in figure 2 it is shown, vibrations screening bed 100 is arranged on top, including screen box 110, it is net bottom it
Shape structure；Vibrations frame 120, it is arranged on bottom rocking trough, including two be arranged on bottom rocking trough
Telescoping shoring post；Motor, it connects described vibrations frame, and it is by controlling said two support column
Indentation and overhang make described rocking trough vacillate now to the left, now to the right.Vibrator 130, it is arranged in screen box, is used for
Drive screen box vertical tremor.
As shown in Fig. 3,5,6, by reserves mechanism 200, air-dry mechanism 300, draining crop mechanism 400 and row
The combination type air-dry machine of wind mechanism 500 composition, wherein, grain storage mechanism 200 be by four pieces on it with adding
The rectangular structure that the grain storage section side plate 210 of strong muscle 220 surrounds, four blocks of grain storage section side plates 210 each other it
Between use bayonet lock to link together by U-shaped column 240, inside grain storage mechanism 200, arrange one
First trapezoidal guide plate 230, the first trapezoidal guide plate 230 is bolted with grain storage section side plate 210
Together.
As shown in Fig. 3,4,7,8,9,10, air-dry mechanism 300 and include multiple dryer section, Mei Gegan
Dry section is tower structure, and it includes air-drying section side plate the 320, second trapezoidal guide plate 310 and cylindrical shape
Air exhausting net pipeline 330, two blocks of air-dried section side plates 320 are arranged on the both sides of air-dried mechanism 300 framework, the
Two trapezoidal guide plates 310 are bolted on air-dried section side plate 320, cylindrical shape air exhausting net pipeline 330
It is arranged on the top of the second trapezoidal guide plate 310, two ends with air-dried section side plate 320 by flange bolt
Connect；Described each air-dried section uses bayonet lock to be connected in series by U-shaped column 240 each other.
As shown in figure 11, draining crop mechanism 400 includes base support 430, is arranged on base support 430
Lower screw feeder 440, connected the auger motor 460 of lower screw feeder 440 by shaft coupling 450, be arranged on down
The charging aperture 410 of screw feeder 440 end and grain outlet 420, lower screw feeder 440 is by lower screw feeder shell and base
Support 430 is connected with.
Such as Fig. 3, shown in 11, air draft mechanism 500 includes blower fan 510, the main air duct of connecting fan 510
520, the multiple points of air channels 550 connecting main air duct 520 form, and described main air duct 520 uses notch cuttype
Version, a point air channel 550 be cylindrical shape, the most each point of air channel 550 and main air duct 520 it
Between vertically connect, be connected with by air channel reducing 540 between air channel and between air channel and blower fan,
Connect the connection end in each point of air channel 550 on notch cuttype main air duct 520 to be provided with tune wind plate 530 and use
In adjusting air force, the cylindrical shape air exhausting net pipeline 330 that each point of air channel 550 is corresponding with in air-dried section
It is connected.
Wherein, blower fan 510 is driven by blower motor 570, and blower fan 510 leads to notch cuttype main air duct 520
Cross air channel reducing 540 bolt to connect, divide air channel 550 with ladder type main air duct 520 by being connected air channel reducing
540 bolts connect, and point air channel 550 is connected by flange bolt with the air-dried section each layer section of air-drying side plate 570,
And communicate with corresponding cylindrical shape air exhausting net pipeline 330.
The lower exit width of the first trapezoidal guide plate 230 and the height of the first trapezoidal guide plate 230 are bases
The angle of repose of grain natural flow sets, and can allow grain natural flow that grain can be prevented again excessive.I.e.
Grain flows downward from grain storage mechanism 200, through air-drying mechanism 300, finally arrives draining crop mechanism 400.
Described cylindrical shape air exhausting net pipeline 330 exactly fits into the internal first trapezoidal guiding of grain storage mechanism 200
The centre position of 230 times outlets of plate, or be installed to air-dry section every layer just to the second trapezoidal guide plate 310
The centre position of lower outlet, diameter and the first trapezoidal trapezoidal guide plate of guide plate 230 or the second 310 times
Exit width is identical, has the most both ensured the first trapezoidal trapezoidal guide plate of guide plate 230 or the second 310 and circle
Distance between tubular air exhausting net pipeline 330 can be blown through by natural wind, can guarantee that again the grain of the inside not
Mouldy.
Lower screw feeder 440 shell is designed to grooved, and the convenient grain that stores, front and back flange leads to base support 430
Cross bolt to connect, active plugboard, the grain of easy cleaning blocking are presented herein below at grooved housing.
As shown in figure 12, notch cuttype main air duct 520 is up-narrow and down-wide, can avoid the inequality of allocation of the amount of air
Even.
The invention provides a kind of screening type combination air-dry method, comprise the following steps:
Step one: opening vibrations screening bed 100, the vibrations time is 15 points～25 points, for by corn root
Being layered according to moisture, the corn making moisture high is positioned at bottom, the corn position that moisture is low
In top layer；
Step 2: corn flows out from described vibrations screening bed bottom discharge valve, closes after opening 3 points～5 points,
It is dried for corn being carried out layering；
Step 3: use near-infrared grain analyzer to measure moisture Wa flowing out cornn；
Step 4: by the amount of the blocking S of regulation air channel plate 530wi, unit is m2；Regulation corresponding n-th
The wind speed of dryer section,
Wherein, SmFor the air channel pipeline gross area, unit is m2；H the n-th dryer section air outlet distance ground
Height, unit is m；α is air outlet deflection angle, vplFor hair-dryer wind speed, unit is m/s；F
For hair-dryer air outlet sectional area, unit is m2；For corn density, unit is kg/m3, TrwiFor wearing
Coefficient thoroughly, unit is kg/m2；
Step 5: according to grain moisture water content Wa of detectionnWith target water content Wa0, it is percent,
Set air-dry time
T=λ (Wan-Wa0)QallLwa/K·γ·μeα
Wherein QallFor the gross weight of corn, unit is kg；α is dryer section quantity；μ is hair-dryer wind speed,
Unit is m/s；K is Boltzmann constant, and unit is J/K；γ is the rehydration ratio of corn；LwaFor standard
Under atmospheric pressure, the heat needed for evaporation unit moisture, unit is J/kg；λ is for air-drying factor, and its numerical value is
2.581m/K。
Preferred as one, the vibration frequency of described vibrations screening bed 100 is 335HZ～485HZ.
Vacuum drying method is also included, it is to avoid center uneven drying in air drying process after step 5,
By low-temp vacuum method for drying, promote moisture evaporation, strengthen corn drying effect, comprise the following steps:
Step one: the corn after air-drying is placed in storage tank；
Step 2: use storage tank described in heating devices heat, and use radiation temperature measurement device to carry out temperature
Detection, temperature stops heating after being increased to 55～65 DEG C；
Step 3: vacuum pump extracts the air in described storage tank, so that the moisture on described thing to be dried is waved
Sending out, the extraction time is
Wherein, P is hydrone pressure, and unit is Kpa；P0For atmospheric pressure, unit is Kpa；NAFor
Diffusion rate, unit is kmol/sm2；The R drift factor, it is constant, and Z is unit area hydrone
Collision probability, unit is mol/m2；K is Boltzmann constant, and unit is J/K；T is temperature, unit
For K；M is corn gross weight to be dried, and unit is kg；D is diffusion coefficient, units/kg m2/s；δ is
The heat diffusion rate of unit are, unit is Jm2/s。
In another embodiment, during heater utilizes Far-infrared Heating, microwave heating and Electromagnetic Heating
One, wherein, vacuum pump is in diffusion pump, molecular pump, ejector pump, rotary-vane vaccum pump and condenser pump
One, storage tank uses and is provided with the closed cell of heat preservation sandwich layer.
In another embodiment, by pressure range in described storage tank be 15KPa～25KPa.
Although embodiment of the present invention are disclosed as above, but it is not restricted to description and embodiment party
Listed utilization in formula, it can be applied to various applicable the field of the invention completely, for being familiar with ability
For the personnel in territory, be easily achieved other amendment, therefore without departing substantially from claim and etc. homotype
Enclosing under limited general concept, the present invention is not limited to specific details and shown here as the figure with description
Example.
Claims (9)
1. a screening type combination air-dry method, it is characterised in that including:
Step one: opening vibrations screening bed, the vibrations time is 15 points～25 points, is used for corn according to water
Dividing content to be layered, the corn making moisture high is positioned at bottom, and the corn that moisture is low is positioned at top
Layer；
Step 2: corn flows out from described vibrations screening bed bottom discharge valve, closes after opening 3 points～5 points,
It is dried for corn being carried out layering；
Step 3: use near-infrared grain analyzer to measure moisture Wa flowing out cornn；
Step 4: by the amount of the blocking S of regulation air channel platewi, regulate the wind speed of corresponding n-th dryer section,
Wherein SmFor the air channel pipeline gross area, the height on h the n-th dryer section air outlet distance ground；α is for going out
Air port deflection angle, vplFor hair-dryer wind speed, F is hair-dryer air outlet sectional area；For corn density,
TrwiFor penetrating coefficient；
Step 5: according to grain moisture water content Wa of detectionnWith target water content Wa0, when setting air-dried
Between
T=λ (Wan-Wa0)QallLwa/K·γ·μeα
Wherein QallGross weight for corn；α is dryer section quantity；μ is hair-dryer wind speed；；K is Bohr
The most graceful constant；γ is the rehydration ratio of corn；LwaDepress for standard atmosphere, the heat needed for evaporation unit moisture
Amount；λ is for air-drying factor, and unit is m/K.
Screening type the most according to claim 1 combination air-dry method, it is characterised in that described vibrations
Screening bed includes:
Screen box；
Vibrations frame, it is arranged on bottom rocking trough, including telescopic of two be arranged on bottom rocking trough
Dagger；
Motor, it connects described vibrations frame, and it is by controlling the indentation of said two support column and stretching out
Amount makes described rocking trough vertical tremor.
Vibrator, it is arranged in screen box, is used for driving screen box vertical tremor.
Screening type the most according to claim 1 and 2 combination air-dry method, it is characterised in that described
The frequency of vibrations screening bed is 335HZ～485HZ.
Screening type the most according to claim 1 combination air-dry method, it is characterised in that described step
Also including vacuum drying method after five, it comprises the following steps:
Step one: the corn after air-drying is placed in storage tank；
Step 2: use storage tank described in heating devices heat, and use radiation temperature measurement device to carry out temperature
Detection, temperature stops heating after being increased to 55～65 DEG C；
Step 3: vacuum pump extracts the air in described storage tank, so that the moisture on described thing to be dried is waved
Sending out, the extraction time is
Wherein P is hydrone pressure；P0For atmospheric pressure；NAFor diffusion rate；The R drift factor, its
For constant, Z is the collision probability of unit area hydrone；K is Boltzmann constant；T is temperature；m
For corn gross weight to be dried；D is diffusion coefficient；δ is the heat diffusion rate of unit area.
Screening type the most according to claim 4 combination air-dry method, it is characterised in that described heating
Device utilizes the one in Far-infrared Heating, microwave heating and Electromagnetic Heating.
Screening type the most according to claim 4 combination air-dry method, it is characterised in that described vacuum
Pump is the one in diffusion pump, molecular pump, ejector pump, rotary-vane vaccum pump and condenser pump.
Screening type the most according to claim 4 combination air-dry method, it is characterised in that described accommodating
Groove is closed cell.
8. combine air-dry method according to the screening type described in claim 4 or 7, it is characterised in that described
Storage tank is provided with heat preservation sandwich layer.
Screening type combination air-dry method described in the most according to Claim 8, it is characterised in that by institute
Stating the pressure range in storage tank is 15KPa～25KPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610230324.3A CN105910391B (en) | 2016-04-14 | 2016-04-14 | A kind of screening type combination air-dry method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610230324.3A CN105910391B (en) | 2016-04-14 | 2016-04-14 | A kind of screening type combination air-dry method |
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| CN105910391B CN105910391B (en) | 2019-03-12 |
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| CN107371290A (en) * | 2017-07-12 | 2017-11-21 | 刘焕章 | A kind of microwave ore heater box |
| CN108444240A (en) * | 2018-06-28 | 2018-08-24 | 佳木斯大学 | A kind of box-like crops drying device of smart group and its control method |
| CN108622148A (en) * | 2018-03-24 | 2018-10-09 | 袁静 | A kind of chemistry teaching instrument cab with damping and acceleration air-drying function |
| CN110530144A (en) * | 2019-08-29 | 2019-12-03 | 北京中仪智控科技有限公司 | A kind of intelligent drying means based on online measuring technique |
| CN112611174A (en) * | 2020-11-30 | 2021-04-06 | 扬州大学 | Multi-energy complementary drying control system |
| CN113280610A (en) * | 2021-05-31 | 2021-08-20 | 安徽华谷机械科技有限公司 | Grain drying-machine of gradient dehydration |
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| CN114383404B (en) * | 2022-01-18 | 2022-09-13 | 全椒金竹机械制造有限公司 | Micro-suspension type grain drying device |
| CN114383404A (en) * | 2022-01-18 | 2022-04-22 | 全椒金竹机械制造有限公司 | Micro-suspension type grain drying device |
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