CN107144119B - A kind of grain drying of hot air flow self-interacting type - Google Patents
A kind of grain drying of hot air flow self-interacting type Download PDFInfo
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- CN107144119B CN107144119B CN201710441118.1A CN201710441118A CN107144119B CN 107144119 B CN107144119 B CN 107144119B CN 201710441118 A CN201710441118 A CN 201710441118A CN 107144119 B CN107144119 B CN 107144119B
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- dryness storehouse
- hot air
- hot
- grain drying
- air flow
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines 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
- F26B17/14—Machines 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 moving through a counter-current of gas
- F26B17/1408—Machines 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 moving through a counter-current of gas the gas being supplied and optionally extracted through ducts extending into the moving stack of material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- 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
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of grain dryings of hot air flow self-interacting type, belong to grain drying technical field.Include: grain drying device provided by the invention has the function of that delay section air mass flow can be adjusted, realizes gradient control to the hot air flow in drying process, reduce the percent cracked rice in Grain Drying Process；The heat in the hot wind of extraction is recycled again simultaneously, realizes the synergy for subtracting flow not reduction of heat amount.
Description
Technical field
The present invention relates to a kind of grain dryings of hot air flow self-interacting type, belong to grain drying technology neck
Domain.
Background technique
In Grain Drying Process, the moisture content of temperature, time and cereal is the principal element for influencing Quality of Grain Drying.
If the selection of drying means, technological parameter is improper, the cereal after drying will appear different degrees of quality damnification, as stress is split
Line, thermal damage, protein denaturation and uneven drying etc., and the transport to cereal, storage, edible and seed plantation cause
Adverse effect.Stress cracking is one of the principal mode of grain quality damage, maximum to the qualitative effects of paddy and corn, is easy
Cause significantly improving for percent cracked rice.
Summary of the invention
The purpose of the present invention is: it is dry to will lead to cereal for hot air flow excessively high during tempering in Grain Drying Process
The high problem of dry percent cracked rice proposes a novel grain drying device.
Technical solution is:
A kind of grain drying of hot air flow self-interacting type includes:
Dryness storehouse, for cereal to be dried；
Charging hopper is also set up in dryness storehouse side, for launching cereal；
Charging hopper is connected to the conveyer belt at the top of dryness storehouse by elevator, used for conveyer belt in sending cereal from top
Enter dryness storehouse；
Distributor, is arranged in the top inside dryness storehouse, and it is equal that effect is that the cereal that top is fallen down carries out again redisperse
It is even；
In the main body of dryness storehouse, side is provided with hot wind inlet and hot-blast outlet；
Heater, for generating hot-air；Heater is connect by hot air pipe with hot wind inlet；
In the inside of dryness storehouse, it is additionally provided with hollow shelf, hollow shelf is vertically-mounted；It is distributed on hollow shelf wall surface
There is micropore, the connection between inside and outside is realized by micropore；Micropore on hollow shelf is Graded Density distribution from top to bottom,
The density on top is small, and the density of lower part is big；The upper end of hollow shelf is closed, and lower end is connected to suction machine by air intake duct.
The pore diameter range of micropore is 0.5~1mm.
The quantity of hollow shelf can be muti-piece, arranged in parallel between each other.
It is additionally provided with filter device on air intake duct, the impurity in the hot-air of suction can be filtered out.
The partition of dispersed placement is additionally provided with inside dryness storehouse.
It is provided with evaporator in the discharge line of suction machine, condenser, one end of evaporator are provided in hot air pipe
One end of condenser is connected to by expansion valve, the other end of evaporator is connected to the other end of condenser by compressor.
It is additionally provided with temperature monitoring module in the lower part of dryness storehouse, temperature monitoring module is used to monitor on-line the sky of dryness storehouse
Temperature degree passes through control module when the difference DELTA T of the air themperature ascensional range of two time adjacent segments is greater than given threshold
Improve the inspiratory capacity of suction machine.
Include hopper housing in the main structure of charging hopper, is discharge port below hopper housing, in funnel chamber
It is provided with shaft in the middle part of body, helical blade is provided in shaft, turntable is provided with above shaft, is provided with bias on turntable
Axis, eccentric shaft are to be flexibly connected with one end of first connecting rod；It is provided with limit plate on the outside of hopper housing, is set on limit plate
It is equipped with limiting slot, second connecting rod is socketed in limiting slot, one end of second connecting rod is to be flexibly connected with the other end of first connecting rod,
Towards offering opening on the side of limit plate on hopper housing, the outside of opening is arranged baffle, baffle and second connecting rod
Other end connection.
Beneficial effect
Grain drying device provided by the invention has the function of that delay section air mass flow can be adjusted, to drying process
In hot air flow realize gradient control, reduce the percent cracked rice in Grain Drying Process；Simultaneously by the heat in the hot wind of extraction
Amount recycles again, realizes the synergy for subtracting flow not reduction of heat amount.
Detailed description of the invention
Fig. 1 is the structure chart of grain drying provided by the invention；
Fig. 2 is temperature online monitoring flow chart；
Fig. 3 is the structure chart of charging hopper；
Fig. 4 is the structure chart of dial portion；
Wherein, 1, dryness storehouse；2, charging hopper；3, elevator；4, conveyer belt；5, distributor；6, hot wind inlet；7, hot wind
Pipe；8, partition；9, hollow shelf；10, hot-blast outlet；11, air intake duct；12, suction machine；13, discharge port；14, evaporator；15,
Compressor；16, expansion valve；17, heater；18, condenser；19, hopper housing；20, discharge port；21, shaft；22, helical-blade
Piece；23, turntable；24, eccentric shaft；25, first connecting rod；26, second connecting rod；27, limit plate；28, limiting slot；29, baffle；30,
Opening.
Specific embodiment
Embodiment 1
As shown in Figure 1, grain drying device provided by the present invention, includes dryness storehouse 1, for doing to cereal
It is dry；Charging hopper 2 is also set up in 1 side of dryness storehouse, for launching cereal, charging hopper 2 is connected to dryness storehouse by elevator 3
Cereal can be sent into dryness storehouse 1 from top by the conveyer belt 4 at 1 top；Top inside dryness storehouse 1, is provided with distributor
5, it is uniform that its effect is that cereal that top is fallen down carries out again redisperse, enters dryness storehouse 1 in looser mode
In main body.Distributor can use gas redistributor or reciprocating sieve formula redistributor.
In the main body of dryness storehouse 1, using the hot wind inlet of lateral flow type, hot wind is from side and the cereal that falls from above
Convective heat transfer is carried out, in Fig. 1, hot wind inlet 6 is on side, and also in side, they are all represented by dashed line out hot-blast outlet 10；
As mode, hot wind inlet 6 and hot-blast outlet 10 can have setting on the different height of dryness storehouse 1 simultaneously in the prior art
(not drawing in figure), hot wind inlet 6 and hot-blast outlet 10 can be serially connected to realize recycling for hot-air.Supply hot wind
Device also as covered in the prior art, hot-air is generated by heater 17, then hot wind inlet is supplied to by hot air pipe 7
6。
In the inside of dryness storehouse 1, it is additionally provided with hollow shelf 9, hollow shelf 9 is vertically-mounted；On 9 wall surface of hollow shelf
Micropore is distributed with, the connection between inside and outside is realized by micropore；Micropore on hollow shelf 9 is Graded Density from top to bottom
Distribution, the density on top is small, and the density of lower part is big；The upper end of hollow shelf 9 is closed, and lower end is connected to suction by air intake duct 11
Machine 12.
It is that cereal surface moisture vaporizes in initial drying process since wet cereal is entered from the top of dryness storehouse 1
Process, during this, moisture transmission speed is very fast, it is therefore desirable to carry out under the conditions of big flow carrier gas, and temperature is most
Good appropriate reduction, this stage are referred to as dryer section；And after surface moisture vaporization, cereal needs the water inside
Divide such a process for being transferred to cereal surface, in this process, does not answer drying temperature with higher and dry speed
Rate, it is otherwise partially slow to external transmission speed due to internal moisture, and when outside is still within drying process, it is easy to appear cereal
The raising of percent cracked rice, in this stage, preferably by carrying out tempering under the conditions of low temperature, small carrier gas, in this process, hot gas compared with
It is easy to reach moisture balance, can reduce the delivery rate of water vapour, avoid the too fast drying on cereal surface and stress is caused to be opened
It splits, on the one hand can guarantee that moisture migrates from the inside, while also reducing percent cracked rice.In the drying process, pass through suction
Machine 12 extracts air out from hollow shelf 9, and since the micropore distribution density on 9 top of hollow shelf is small, the hot wind on top is still
Higher flow can be so kept, and when hot wind enters to the delay section of lower part, since pore density improves, hot wind is just under
It is sucked out in the micropore in portion, so that the carrier gas flux of lower part declines, slows down rate of drying, avoid opening for tempering stage cereal
It splits.Simultaneously as containing there are many impurity such as subtle dust, particulate matter, fragment, mistake of these impurity in negative-pressure ward in cereal
Cheng Zhong can take out of from micropore, and then improve the quality after grain dry.In a preferred embodiment, micropore
Pore diameter range is 0.5~1mm.
In one embodiment, the quantity of hollow shelf 9 can be muti-piece, arranged in parallel between each other.
In one embodiment, it is additionally provided with filter device on air intake duct 11, it can be in the hot-air of suction
Impurity is filtered out.
In one embodiment, the partition 8 of dispersed placement is additionally provided with inside dryness storehouse 1.It can be played paddy
The effect that object constantly stops, disperses improves its residence time, realizes preferably thermal conduction effect.
In one embodiment, it is provided with evaporator 14 in the discharge line of suction machine 12, is arranged in hot air pipe 7
There is condenser 18, one end of evaporator 14 is connected to one end of condenser 18 by expansion valve 16, and the other end of evaporator 14 is logical
Overcompression machine 15 is connected to the other end of condenser 18.Condenser 18, compressor 15, evaporator 14 and expansion valve 16 constitute one
A heat pump system, after heat pump system starting, evaporator 14 obtains energy from the air heat source in the discharge line of suction machine 12,
18 side of condenser is transferred heat to by the working medium of heat pump system, since condenser 18 is to be in 7 inside of hot air pipe, that
After heater 17, the air that it is generated can be entered to inside hot air pipe 7, be exchanged heat with condenser 18, by heat pump
Heat in system is taken away, next, the air being heated can be entered inside dryness storehouse 1 by hot air pipe 7.Using such knot
Structure, the heat that the air extracted out from air baffle 9 may be implemented are used again.On the whole from device, air baffle 9
The adjustment effect that the air mass flow of delay section reduces is realized, and after heat pump system recycles derived atmospheric heat again, it send
It is back to hot air pipe 7, realizes recycling for heat, conspiracy relation is constituted between each other, both reduces hot air flow, in turn avoid
The loss of heat realizes and subtracts the effect that flow does not lose heat.
In one embodiment, it is additionally provided with temperature monitoring module in the lower part of dryness storehouse 1, temperature monitoring module is used for
The air themperature for monitoring dryness storehouse 1 on-line, when the difference DELTA T of the air themperature ascensional range of two time adjacent segments is greater than setting
When threshold value, the inspiratory capacity of suction machine 12 is improved by control module.Since the moisture distribution of cereal is uneven, even if with batch of
Cereal can also have that portion of water is high, portion of water is low, therefore, in Grain Drying Process, due to cereal
The fluctuation of moisture content will lead to being not suitable for for operating parameter, especially when the grain dry to low moisture content, will lead to
The drying temperature or air mass flow of delay section are excessively high, and the problem of cause percent cracked rice to improve.Therefore, pass through the sky of detection delay section
Temperature degree illustrates that this batch of cereal may be led since moisture content is low when obvious ascendant trend occurs in air themperature
Over-drying problem is caused, delay section air themperature is increased, and the moisture inside cereal has little time to migrate to surface progress vapour
Change.When air themperature uphill process Δ T be more than threshold value, improve the inspiratory capacity of suction machine 12, can reduce the sky of delay section
Throughput avoids over-drying problem.
Due to harvesting the wet cereal taken when stacking, the moisture for being easy to appear the cereal on top evaporates, and lower part is due to sky
Hermetic seal and the situation for causing moisture content higher can be due to upper and lower cereal when these cereal fall down from charging hopper 2
Moisture is uneven and drying process operating parameter is caused to be not suitable for, and it is good to be easy to appear partially dried effect, and partially dried effect
Bad problem.As shown in figure 3, include hopper housing 19 in the main structure of charging hopper 2 in one embodiment,
It is discharge port 20 in the lower section of hopper housing 19, shaft 21 is provided in the middle part of hopper housing 19, is provided with spiral in shaft 21
Blade 22 is provided with turntable 23 in the top of shaft 21, and eccentric shaft 24, eccentric shaft 24 and first connecting rod 25 are provided on turntable 23
One end be flexibly connected；The outside of hopper housing 19 is provided with limit plate 27, as shown in figure 4, being arranged on limit plate 27
There is limiting slot 28, second connecting rod 26 is socketed in limiting slot 28, one end of second connecting rod 26 and the other end of first connecting rod 25 are
Be flexibly connected, towards opening 30 is offered on the side of limit plate 27 on hopper housing 19, be open 30 outside setting baffle
29, baffle 29 is connect with the other end of second connecting rod 26.
When in use, pour into wet cereal from the top of hopper housing 19 first, wet cereal after entering to inside cavity,
Can be piled up on helical blade 22, after being affected by gravity, wet cereal can move downward and drive simultaneously helical blade 22 into
Row rotation, and then makes shaft 21 also generate rotation, since turntable 23 is located above shaft 21, turntable 23 also can therewith into
Rotate to Line Continuity.Due to being provided with eccentric shaft 24 on turntable 23, and on eccentric shaft 24 even with 25 activity of first connecting rod
It connects, therefore, the rotation of turntable 17 will drive first connecting rod 25 again and be moved, since the other end of first connecting rod 25 is and clamping
Second connecting rod 26 in limiting slot 28 is flexibly connected, then after with first connecting rod 25 around the shaft 20 movements, so that it may band
Dynamic second connecting rod 26 moves back and forth in limiting slot 26, and because the lower part of second connecting rod 26 is connect with baffle 29, and baffle 29
It is set to the outside of opening 30, then baffle 29 will periodically make opening 30 dozens with the reciprocating motion of second connecting rod 26
It opens or is closed.Since wet cereal is flowed out from top to bottom from hopper housing 19, the rate of outflow of wet cereal will receive certain
Delay, and since opening 30 can be opened and closed periodically, then the wet cereal for the low moisture content being located above will
It is directly fallen by opening, falls into elevator 3, avoid moisture content non-uniform problem when wet cereal enters elevator.
Claims (7)
1. a kind of grain drying of hot air flow self-interacting type, which is characterized in that include:
Dryness storehouse (1), for cereal to be dried；
Charging hopper (2) are also set up in dryness storehouse (1) side, for launching cereal；
Charging hopper (2) is connected to the conveyer belt (4) at the top of dryness storehouse (1) by elevator (3), and conveyer belt (4) is used for will
Cereal is sent into dryness storehouse (1) from top；
Distributor (5), is arranged the top internal in dryness storehouse (1), and effect is that the cereal that top is fallen down carries out redisperse again
Uniformly；
In the main body of dryness storehouse (1), side is provided with hot wind inlet (6) and hot-blast outlet (10)；
Heater (17), for generating hot-air；Heater (17) is connect by hot air pipe (7) with hot wind inlet (6)；
It in the inside of dryness storehouse (1), is additionally provided with hollow shelf (9), hollow shelf (9) is vertically-mounted；Hollow shelf (9) wall
Micropore is distributed on face, the connection between inside and outside is realized by micropore；Micropore on hollow shelf (9) is ladder from top to bottom
Density Distribution is spent, the density on top is small, and the density of lower part is big；The upper end of hollow shelf (9) is closed, and lower end passes through air intake duct (11)
It is connected to suction machine (12)；It include hopper housing (19) in the main structure of charging hopper (2), under hopper housing (19)
Side is discharge port (20), is provided with shaft (21) in the middle part of hopper housing (19), helical blade (22) are provided in shaft (21),
It is provided with turntable (23), is provided on turntable (23) eccentric shaft (24) above shaft (21), eccentric shaft (24) connects with first
One end of bar (25) is to be flexibly connected；It is provided with limit plate (27) on the outside of hopper housing (19), is set on limit plate (27)
It is equipped with limiting slot (28), is socketed in limiting slot (28) second connecting rod (26), one end of second connecting rod (26) and first connecting rod
(25) the other end is to be flexibly connected, towards offering opening (30) on the side of limit plate (27) on hopper housing (19),
Baffle (29) are arranged in the outside of opening (30), and baffle (29) is connect with the other end of second connecting rod (26).
2. the grain drying of hot air flow self-interacting type according to claim 1, which is characterized in that the aperture of micropore
Range is 0.5~1mm.
3. the grain drying of hot air flow self-interacting type according to claim 1, which is characterized in that hollow shelf
(9) quantity can be muti-piece, arranged in parallel between each other.
4. the grain drying of hot air flow self-interacting type according to claim 1, which is characterized in that in air intake duct
(11) it is additionally provided with filter device on, the impurity in the hot-air of suction can be filtered out.
5. the grain drying of hot air flow self-interacting type according to claim 1, which is characterized in that in dryness storehouse
(1) the internal partition (8) for being additionally provided with dispersed placement.
6. the grain drying of hot air flow self-interacting type according to claim 1, which is characterized in that in suction machine
(12) it is provided with evaporator (14) in discharge line, is provided in hot air pipe (7) condenser (18), the one of evaporator (14)
End is connected to one end of condenser (18) by expansion valve (16), and the other end of evaporator (14) is connected to by compressor (15)
The other end of condenser (18).
7. the grain drying of hot air flow self-interacting type according to claim 1, which is characterized in that in dryness storehouse
(1) lower part is additionally provided with temperature monitoring module, and temperature monitoring module is used to monitor on-line the air themperature of dryness storehouse (1), when
When the difference DELTA T of the air themperature ascensional range of two time adjacent segments is greater than given threshold, is improved and aspirated by control module
The inspiratory capacity of machine (12).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710441118.1A CN107144119B (en) | 2017-06-13 | 2017-06-13 | A kind of grain drying of hot air flow self-interacting type |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710441118.1A CN107144119B (en) | 2017-06-13 | 2017-06-13 | A kind of grain drying of hot air flow self-interacting type |
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| CN107144119A CN107144119A (en) | 2017-09-08 |
| CN107144119B true CN107144119B (en) | 2019-02-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108310831A (en) * | 2018-01-12 | 2018-07-24 | 佛山诗勤智能科技有限公司 | A kind of improved industrial cooling water reusing device |
| CN109173560B (en) * | 2018-10-19 | 2023-10-24 | 吉林工商学院 | Condensation circulation heat increasing continuous variable-temperature grain drying energy-saving device and control method thereof |
| CN110767423B (en) * | 2019-11-14 | 2020-08-28 | 浙江镜小二网络科技有限公司 | Transformer respirator with optimized structure |
| CN113803968A (en) * | 2021-09-03 | 2021-12-17 | 江苏悦谷农业科技发展有限公司 | Grain drier and control method of drying layer flow and heat supply quantity thereof |
| CN113892351B (en) * | 2021-09-14 | 2023-03-21 | 徐州市海涛制冷设备有限公司 | Air energy cold and hot air blower granary structure |
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| JP3080600B2 (en) * | 1997-05-22 | 2000-08-28 | 株式会社山本製作所 | Grain ventilation equipment |
| JP3042989B2 (en) * | 1997-05-27 | 2000-05-22 | 株式会社山本製作所 | Grain drying equipment |
| CN2499776Y (en) * | 2001-10-10 | 2002-07-10 | 吴军港 | Grain drier |
| CN101592434A (en) * | 2008-05-26 | 2009-12-02 | 沈开宇 | Direct-heating gravity flow type dryer |
| CN102697157B (en) * | 2012-06-19 | 2014-07-30 | 集美大学 | High-efficiency and energy-saving intensive tobacco flue-curing house |
| CN205897790U (en) * | 2016-07-29 | 2017-01-18 | 牛子杰 | Grain drying equipment |
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Effective date of registration: 20220916 Address after: No. 16, East 1st Road, Industrial Park, Hongze District, Huaian City, Jiangsu Province, 223100 Patentee after: JIANGSU RIGHT ELECTRONICS EQUIPMENT Co.,Ltd. Address before: 223300 No. 111 Changjiang West Road, Huaiyin District, Jiangsu, Huaian Patentee before: HUAIYIN NORMAL University |