CN105475479A - Intelligent normal-pressure far infrared frozen grain drying machine - Google Patents
Intelligent normal-pressure far infrared frozen grain drying machine Download PDFInfo
- Publication number
- CN105475479A CN105475479A CN201610064027.6A CN201610064027A CN105475479A CN 105475479 A CN105475479 A CN 105475479A CN 201610064027 A CN201610064027 A CN 201610064027A CN 105475479 A CN105475479 A CN 105475479A
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- China
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- far infrared
- conveyor belt
- material conveyor
- hothouse
- normal pressure
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/08—Drying; Subsequent reconstitution
Abstract
The invention relates to an intelligent normal-pressure far infrared frozen grain drying machine which comprises a drying chamber. The top, the bottom and the middle of the drying chamber are each provided with a humidity sensor and a temperature sensor. Five material conveying belts are arranged in the middle of the drying chamber. The second material conveying belt and the fourth material conveying belt are each provided with a weight sensor. The upper face and the lower face of each of the first four conveying belts are each provided with two far infrared radiation heating plates. The fifth material conveying belt is provided with a condensate air pipe. Each sensor transmits collected signals to a PLC main control module. The whole drying system is regulated and controlled in real time through an output control module. The lower portion of the drying chamber is connected with a water trap. The lower portion of a machine body is provided with an air-cooled type refrigerating unit which provides a cold source for the water trap. The drying machine directly works outdoors, frozen grain in northern alpine regions can directly enter the drying machine to be dried, energy consumption is lowered, and work efficiency is improved; meanwhile, outdoor cold air supplies cold to the condensate air pipe, and the cold source is effectively utilized.
Description
One, technical field:
What the present invention relates to is that what be specifically related to is the freezing grain drier of a kind of intelligent normal pressure far infrared for the quick-drying method of the freezing grain in cold area in north in Condition of Grain-Drying Technology field.
Two, background technology:
Northern China is the main product ground of grain, according to statistics, because weather is clammy after grain harvest, is deposited in threshing ground, can not dry rapidly and cause go mouldy, grain that germination etc. is lost is up to 5%.Especially the large-scale corn in Heilongjiangdistrict and rice harves phase left and right in November, outdoor average minimum temperature-14 DEG C, northern territory reaches-17 DEG C.Be all freezing state at the grain of storage outdoors, although can keep in outdoor the short time, the loss caused due to bird mouse and weather is higher.Therefore dry storage is particularly outstanding with the contradiction of preserving grain quality with energy consumption for drying in time.The timely drying of north grain and storage, become grain circulation industrial chain most important thing link.
At present, northern China carries out drying mainly through natural drying, rower drier and cylindrical drier to grain.The natural drying time is long, and the impact by place and weather is large; Rower drier and cylindrical drier generally all exist that cost is high, and the thermal efficiency is lower, large to freezing grain drying energy consumption, and after dry, quality declines problems such as (percent cracked rice increase, variable color).
Three, summary of the invention:
The object of this invention is to provide the freezing grain drier of a kind of intelligent normal pressure far infrared, the freezing grain drier of this intelligent normal pressure far infrared is for solving the quick-drying problem of the freezing grain in existing cold area in north.
The technical solution adopted for the present invention to solve the technical problems is: the freezing grain drier of this intelligent normal pressure far infrared comprises hothouse, and the top of described hothouse, bottom and centre are provided with humidity sensor, temperature sensor; In the middle of hothouse, five layers of material conveyor belt are installed, second layer material conveyor belt and the 4th layer of material conveyor belt are separately installed with weight sensor, front four layers of material conveyor belt respectively install two blocks of Heated by Far-Infrared Radiation plates up and down, and layer 5 material conveyor belt place is provided with condensation airduct; Each sensor above-mentioned to PLC main control module, through output control module to whole drying system real-time monitoring, realizes intelligentized control method the signal transmission collected; Be connected with water trap below hothouse, underpart has air cooling refrigeration unit to provide low-temperature receiver for water trap.
In feed hopper, flow control valve being installed in such scheme, controlling entering the grain uniformity on hothouse material conveyor belt.
In such scheme, five layers of material conveyor belt all respectively connect a frequency modulation motor, and every layer of material conveyor belt independently provides power, independently can regulate belt speed.
In such scheme, the bottom of water trap is taper, and there is draining valve cone bottom, can carry out ice-melt draining after drying completes.
In such scheme, water trap has two, alternately can trap steam, increase work efficiency.
In such scheme, hothouse is provided with heat-insulation layer, and heat-insulation layer is formed by filling heat-preservation cotton sealing between insulation double-layer plate.
In such scheme, roller is installed in the bottom of drying machine frame, can the movement of convenient and dry machine.
In such scheme, hothouse is provided with observation window.
Beneficial effect:
1, the present invention is directly at outside work, and the freezing grain of cold area in north directly can enter drying machine and carry out drying, eliminates the link of freeze-dried material pre-freeze, reduces energy consumption, add operating efficiency; Meanwhile, utilize outdoor cold air to condensation airduct cooling, efficiently utilize low-temperature receiver, reduce energy consumption for drying.
2, automatic control system of the present invention carries out Real-Time Monitoring by temperature, humidity, weight sensor, and carries out real-time monitoring to Far infrared heating plate radiant power, material conveyor belt belt speed, achieves the omnidistance intelligent automation of grain drying and controls.
3, the present invention is by the mode of Multi-stage heating, improves the utilization rate of Heated by Far-Infrared Radiation plate, the rate of drying of further lift grain.
4, the present invention adopts alternative expression water trap to carry out rapid condensation absorption to a large amount of steam that material in atmospheric freeze drying process distils out, provides freeze-drying environment, ensure that the Quality of dry product of grain.
5, the present invention adopts water trap to carry out rapid condensation absorption to a large amount of steam that material in atmospheric freeze drying process distils out, provides freeze-drying environment, ensure that the Quality of dry product of grain; And under the cold environment acting in conjunction that provides at hothouse internal upper part thermal environment, the pre-cold environment in condensation airduct place, bottom, water trap of a large amount of water vapours produced in Grain Drying Process, form the air-flow of downward unimpeded operation, improve the efficiency that drying machine absorbs water vapour.
Four, accompanying drawing illustrates:
Fig. 1 is the structural representation of drying machine in the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is water trap structural representation in the present invention;
Fig. 4 is dry run schematic diagram of the present invention;
Fig. 5 is intelligence control system figure of the present invention;
Fig. 6 is workflow diagram of the present invention.
In figure, 1 elevator, 2 feed hoppers, 3 vane type flow controllers, 4 frames, 5 temperature sensors, 6 humidity sensors, 7 material conveyor belts, 8 Heated by Far-Infrared Radiation plates, 9 hothouses, 10 condensation airducts, 11 row's grain mouths, 12 grain storage rooms, 13 draining crop mechanisms, 14 rollers, 15 draining valves, 16 weight sensors, 17 frequency modulation motors, 18 water traps, 19 bunchers, 20 precooling fans, 21 refrigeration unit, 22 refrigeration supplying valves, 23 electric heating tubes, 24 condenser pipes, 25 electric heaters.
Five, detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is described further:
Composition graphs 1, shown in Fig. 2, the freezing grain drier of this intelligent normal pressure far infrared comprises frame 4, feed hopper 2, hothouse 9, Heated by Far-Infrared Radiation plate 8, material conveyor belt 7, water trap 18, precooling fan 20, refrigeration unit 21, temperature sensor 5, humidity sensor 6, weight sensor 16, PLC main control module, output control module, computer controller, draining valve 15, support body pipeline valve, grain storage room 12 and body roller 14, feed hopper 2 is arranged on below the discharging opening of elevator 1, feed hopper 2 is inserted into above the side of ground floor material conveyor belt 7 in hothouse 9, in feed hopper 2, flow control valve is installed, control entering the grain uniformity on hothouse 9 material conveyor belt 7.Grain storage room 12 is positioned at the side of frame 4, and the bottom of hothouse 9 communicates by arranging grain mouth 11 with grain storage room 12, and grain storage room 12 is provided with draining crop mechanism 13, and dried grain leaves drying machine by grain outlet.Roller 14 is installed in the bottom of drying machine, can the movement of convenient and dry machine.
Elevator 1 will freeze state grain hoisting to drying machine top, enter hothouse 9 from feed hopper 2.Vane type flow controller 3 being installed bottom feed hopper 2, by buncher 19 to entering monthly quota of food grain for an individual control on the superiors' material conveyor belt 7 in drying machine, protecting the even lay of grain on material conveyor belt 7.
Hothouse 9 is vertical sealed insulation construction, and outer wall is double-layer plate, fills pearlite wool in interlayer.The top of hothouse 9, bottom and centre are provided with humidity sensor 6, temperature sensor 5; Install five layers of material conveyor belt, 7, five layers of material conveyor belt 7 in the middle of hothouse 9 and all respectively connect a frequency modulation motor 17, every layer of material conveyor belt 7 independently provides power by independently frequency modulation motor 17, independently can regulate belt speed.
Material conveyor belt 7 is fixed on frame 4 sidewall by bearing pin, second layer material conveyor belt 7 and the 4th layer of material conveyor belt 7 install high temperature resistant vapour-pressure type weight sensor 16 respectively, described weight sensor 16 is separately positioned on corresponding second layer material conveyor belt 7 li and the 4th layer of material conveyor belt 7 li, weighs in real time to the grain in the unit are in dry run; Front four layers of material conveyor belt about 7 respectively install two blocks of Heated by Far-Infrared Radiation plates 8, and every block Heated by Far-Infrared Radiation plate 8 is independent control, can autonomous regulating power size, thus heating-up temperature between regulatory region; Layer 5 material conveyor belt 7 place is provided with condensation airduct 10, and condensation airduct 10 connects precooling fan 20; Each sensor above-mentioned the signal transmission collected to PLC main control module, PLC main control module carries out real-time monitoring by output control module to the belt speed of material conveyor belt 7 and Heated by Far-Infrared Radiation plate 8 power, realize intelligent dry, temperature sensor 5, humidity sensor 6, PLC main control module and output control module are all arranged in frame 4; Be connected with water trap 18 below hothouse 9, the bottom of water trap 18 is taper, and there is draining valve 15 cone bottom, can carry out ice-melt draining, be surrounded by foamed polyethylene heat-insulation layer outside water trap 18 after drying completes; Underpart has air cooling refrigeration unit 21 to provide low-temperature receiver for water trap 18.Water trap 18 has two, alternately can trap steam, when one of them water trap 18 needs repairing, another water trap 18 works, can not because of water trap 18 keep in repair time, drier quits work, to ensure long-term operation of the present invention, raise the efficiency.
Consult Fig. 3, there is air cooling refrigeration unit 21 water trap 18 outside, provides low-temperature receiver by piped water vapour trap 18, can carry out timely adjustment according to hothouse 9 humidity.Refrigeration unit 21 and condenser pipe 24 form closed circuit by pipeline, and refrigeration unit 21 and condenser pipe 24 are provided with the supplying valve 22 that freezes, and electric heating tube 23 connects electric heater 25.Water trap 18 absorbs a large amount of water vapours that material distils out in dry run, foamed polyethylene heat-insulation layer is surrounded by outside water trap 18, prevent water trap 18 refrigerating capacity from losing, water trap 18 enrich the water is controlled by refrigeration unit 21, timely adjustment can be carried out according to hothouse 9 humidity, hothouse 9 right lower quadrant has row's grain mouth 11, material conveyor belt 7 enters grain storage room 12 grain after cooling through row's grain mouth 11, draining crop mechanism 13 is arranged at bottom, grain storage room 12, dried grain can discharge drying machine by draining crop mechanism 13, and draining crop mechanism 13 is row's grain screw feeder.
Shown in composition graphs 4, Fig. 5, Fig. 6, the present invention realizes drying means:
Freezing state grain is risen to drying machine top by elevator, is entered on conveyer belt by the vane type flow apparatus essence amount control bottom feed hopper 2, and even lay;
Along with the running of conveyer belt, by the mode of multistage Heated by Far-Infrared Radiation, temperature sensor 5, humidity sensor 6 and weight sensor 16 in drying machine is coordinated to monitor in real time, real-time monitoring Far infrared heating plate radiant power and conveyer belt belt speed, optimize and realize the omnidistance intelligentized control method of grain drying; In atmospheric freeze drying grain process, in grain seed, the Free water of ice crystal state or sub-ice crystal state and part Bound moisture, be directly sublimed into steam, carry out rapid condensation absorption by alternative expression water trap 18, grain freeze drying environment is not only provided, ensures again the Quality of dry product of grain.
When drying grain after multistage Heated by Far-Infrared Radiation is transported on hothouse 9 conveyer belt bottom, along with conveyer belt running, cooled by the condensation airduct 10 of hothouse 9 inner wall surrounding, enter grain storage room 12 after drying grain cooling and store, finally discharged by draining crop mechanism 13;
Under the cold environment acting in conjunction that a large amount of water vapours produced in Grain Drying Process provide at hothouse 9 internal upper part thermal environment, the pre-cold environment in bottom condensation airduct 10 place, water trap 18, form the air-flow of downward unimpeded operation, and finally absorbed in water trap 18, ice-melt draining discharge drying machine.
The present invention controls the process of grain moisture content: by being arranged on the unit weight of grain in the weight sensor 16 real-time Transmission unit volume in material conveyor belt 7, calculates grain moisture content value, in conjunction with interpolative prediction control algolithm, and accurate Calculation row grain moisture.Connected with PLC main control module by signal conversion module, PLC main control module output point and conveyer belt motor inverter group communication, according to internal algorithm setpoint frequency value, thus regulate conveyer belt motor speed, indirect regulation grain drying speed, strictly controls output grain moisture content.Algorithm is wherein known technology.
Grain weight online data of the present invention adopts the cordless communication network based on ModbusASCII communication protocol, ensures data communication real-time, high accuracy and stability.Wireless communication module adopts JZ873 wireless data transmission module, and this module adopts transparent transmission mode, by serial ports and chip microcontroller data transmit-receive; The wireless data transmission module be connected with PLC main control module adopts JZ874USB wireless data transmission module.The transmission frequency of two intermodules is 433MHz, and baud rate is 9600bps, and adopt 3.5dp built-in aerial, wireless transmission distance is no less than 800 meters, meets the requirement of grain weight data transmission range.
The invention solves the quick-drying problem of the freezing grain in cold area in north, achieve whole dry omnidistance intellectuality and automation.
Normal pressure far infrared Freeze Drying Technique is lower than under 0 DEG C of condition at temperature of charge, thermal source is provided by far infrared radiation, in material, moisture (ice) directly distils at ambient pressure as steam, reach quick-drying object, there is drying time short, the advantages such as the thermal efficiency is high, and final grain product quality is good.Be particularly useful for the frozen state grain drying process application of cold area in north.
Claims (8)
1. the freezing grain drier of intelligent normal pressure far infrared, it is characterized in that: the freezing grain drier of this intelligent normal pressure far infrared comprises hothouse (9), the top of described hothouse (9), bottom and centre are provided with humidity sensor (6), temperature sensor (5); In the middle of hothouse (9), five layers of material conveyor belt (7) are installed, second layer material conveyor belt (7) and the 4th layer of material conveyor belt (7) are separately installed with weight sensor (16), front four layers of material conveyor belt (7) respectively install two pieces of Heated by Far-Infrared Radiation plates (8) up and down, and layer 5 material conveyor belt (7) place is provided with condensation airduct (10); Each sensor above-mentioned to PLC main control module, through output control module to whole drying system real-time monitoring, realizes intelligentized control method the signal transmission collected; Hothouse (9) below is connected with water trap (18), and underpart has air cooling refrigeration unit (21) to provide low-temperature receiver for water trap (18).
2. the freezing grain drier of intelligent normal pressure far infrared according to claim 1, is characterized in that: be provided with flow control valve in described feed hopper (2), controls entering the grain uniformity on hothouse (9) material conveyor belt.
3. the freezing grain drier of intelligent normal pressure far infrared according to claim 2, it is characterized in that: five layers of described material conveyor belt (7) all respectively connect a frequency modulation motor (17), every layer of material conveyor belt (7) independently provides power, independently regulates belt speed.
4. the freezing grain drier of intelligent normal pressure far infrared according to claim 3, is characterized in that: the bottom of described water trap (18) is taper, and there is draining valve (15) cone bottom.
5. the freezing grain drier of intelligent normal pressure far infrared according to claim 4, is characterized in that: described water trap (18) has two, and two water traps (18) alternately trap steam.
6. the freezing grain drier of intelligent normal pressure far infrared according to claim 5, is characterized in that: described hothouse (9) is provided with heat-insulation layer, and heat-insulation layer is formed by filling heat-preservation cotton sealing between insulation double-layer plate.
7. the freezing grain drier of intelligent normal pressure far infrared according to claim 6, is characterized in that: roller (14) is installed in the bottom of described drying machine frame (4).
8. the freezing grain drier of intelligent normal pressure far infrared according to claim 7, is characterized in that: described hothouse (9) is provided with observation window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610064027.6A CN105475479B (en) | 2016-02-01 | 2016-02-01 | A kind of intelligence normal pressure far infrared freezing grain drier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610064027.6A CN105475479B (en) | 2016-02-01 | 2016-02-01 | A kind of intelligence normal pressure far infrared freezing grain drier |
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| CN105475479A true CN105475479A (en) | 2016-04-13 |
| CN105475479B CN105475479B (en) | 2019-10-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107166949A (en) * | 2017-07-10 | 2017-09-15 | 合肥佳粮机械科技有限公司 | A kind of foodstuff drying device monitoring and warning system |
| CN107388812A (en) * | 2017-09-11 | 2017-11-24 | 江苏大学 | A kind of anti-flaming reliable drying measure and control device of stalk particle dryer |
| CN109335729A (en) * | 2018-11-25 | 2019-02-15 | 广西农贝贝农牧科技有限公司福绵分公司 | A kind of the Feed Manufacturing delivery equipment and process of the horizontal feed bin of indoor location |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107166949A (en) * | 2017-07-10 | 2017-09-15 | 合肥佳粮机械科技有限公司 | A kind of foodstuff drying device monitoring and warning system |
| CN107388812A (en) * | 2017-09-11 | 2017-11-24 | 江苏大学 | A kind of anti-flaming reliable drying measure and control device of stalk particle dryer |
| CN109335729A (en) * | 2018-11-25 | 2019-02-15 | 广西农贝贝农牧科技有限公司福绵分公司 | A kind of the Feed Manufacturing delivery equipment and process of the horizontal feed bin of indoor location |
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| CN105475479B (en) | 2019-10-15 |
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