CN206572852U - A kind of microwave material drying device - Google Patents
A kind of microwave material drying device Download PDFInfo
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- CN206572852U CN206572852U CN201720057341.1U CN201720057341U CN206572852U CN 206572852 U CN206572852 U CN 206572852U CN 201720057341 U CN201720057341 U CN 201720057341U CN 206572852 U CN206572852 U CN 206572852U
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Abstract
The utility model is related to a kind of microwave material drying device, and water-containing materials are carried out with low temperature drying based on microwave technology, and heater includes microwave generator, microwave heating cabinet, tempering storehouse, conveying mechanism and ventilation equipment；Microwave heating cabinet includes material container, charging aperture and discharging opening, in addition to microwave antenna and blade group, the input port of microwave antenna are connected with microwave generator, and radiation port is facing to the paddy rice in container；Blade at least part surface is covered by the paddy rice in container, and the direction flowed using charging aperture to discharging opening paddy rice, as reference direction, blade is more than 0 degree by the absolute value of angle between the surface normal direction of paddy rice covering part and reference direction.The utility model realizes that paddy rice low is dried using microwave energy, and homogeneous heating, percentage of damage is low, and capacity usage ratio is high, nonstaining property discharge, energy-conserving and environment-protective.
Description
Technical field
The utility model belongs to Pulse width technical field, and in particular to a kind of microwave material drying device.
Background technology
It is storage, the primary link of processing after harvest that paddy rice, which is dried,.With the continuous improvement of China's rice yield, due to dry
Caused loss of going mouldy is consequently increased not in time for dry processing, causes substantial amounts of waste, is increased income as agricultural high yield anxious to be resolved
The problem of.
Paddy rice belong in heat sensitive material, drying process must strict control material temperature (being usually no more than 40 DEG C), it is no
The problem of quality decline, percent cracked rice increase can then be brought.Using circulating more than current the most widely used paddy rice drying equipment
Drying process, its theory diagram is as shown in Figure 1.Fuel (conventional coal, biomass etc.) burns in hot-blast stove PR1, passes through heat exchange
Produced thermal energy exchange to heat transfer agent-air, is formed hot blast by device；Hot blast is obtained enough in the presence of air-heater PR2
Blast, then mix appropriate cold air to obtain required wind-warm syndrome by valve PR3.Mixed hot blast enters heating cabinet PR4
Interior hot air duct, through the paddy in heating cabinet under Action of Wind pressure, water to be dried is given by self-contained thermal energy exchange
Rice, while taking away the moisture on rice grain surface, is finally discharged as waste gas by air outlet.Paddy rice in heating cabinet is in a point grain machine
It is discharged in the presence of structure PR5 in conveying worm PR6, elevator PR7 is delivered to by conveying worm PR6.Elevator PR7 is by water
Rice is transported to tempering storehouse PR8, into tempering process.During tempering, the hydrone of interior energy is obtained by rice grain internal migration
To surface.With the discharge of paddy rice in heating cabinet 4, the paddy rice inside the PR8 of tempering storehouse can supplement inflow heating cabinet, so as to be formed
The drying process of " heating "-" tempering " alternate cycles.According to paddy rice initial aqueous rate it is different, it is necessary to the number of times of circulation also not to the utmost
It is identical.
Although the problems such as solving rate of drying, percentage of damage, weak point is also bright above-mentioned conventional dryer energy
Aobvious.
First, paddy rice is to draw heat energy from hot blast by way of heat transfer in heating process, and heat energy is in rice grain
In transmission be also to be carried out in the way of conduction.Because air, paddy rice are the non-conductors of heat, on the one hand heat transfer process is made
There is larger thermograde in into paddy particle, be easily broken, another aspect conduction of velocity is slow, and heat transfer time is long, diabatic process
In heat loss increase, so as to add energy consumption.Second, the EGT that Hot-blast Heating mode is discharged certainly will be higher than paddy temperature
Degree, still carries the heat energy of larger proportion, reduce further the energy utilization efficiency of complete machine.Finally, Combustion of Hot Air Furnace is produced
Flue gas contains more contaminative discharge, and a large amount of uses can bring serious environmental pollution.
Microwave heating has speed fast, the big advantage of penetration depth, the fields such as food, metallurgy, chemical industry, environmental protection it is existing compared with
Many applications.But in the commercial Application of the big scale of construction, the size of applicator can reach several or even tens wavelength, microwave field
Distribution causes temperature of charge spatial distribution uneven with very strong inhomogeneities, is not suitable for for the sensitive thing of heating-up temperature
Material.Microwave is used for into paddy rice drying more open achievement in research, but is all confined to laboratory, using 2.4GHz family expenses
Micro-wave oven is as laboratory facilities, and its achievement can not be generalized to actual industrial production, and a main cause can not exactly be solved well
The homogeneity question that certainly microwave is heated.Paddy rice has strict limit to maximum temperature as a kind of responsive to temperature type material, drying process
System, if controlling maximum temperature in whole space not transfinite, the paddy rice in low-temperature space being largely distributed can not obtain enough
Heat energy, the speed and efficiency of heating can be all limited, so as to lose the distinctive advantage of microwave.Up to the present, there is not yet can be used for
The microwave paddy rice drying device of actual industrial production.
The content of the invention
In order to solve the technical problem present in prior art in dry materials industrial applications, the utility model proposes
A kind of microwave material drying device and microwave material drying means, are filled by designing microwave heating cabinet, and optimizing whole dry
The structure composition put, it is possible to use microwave energy realizes that the industrialization paddy rice of efficient, energy-saving and environmental protection dries production, its particular technique
Scheme is as follows：
First aspect of the present utility model is comprised the following steps there is provided a kind of microwave material drying means, methods described：
Step 1, to the material carry out removal of impurities processing；
Step 2, by the removal of impurities handle after material load device for transporting objects；
Step 3, the startup device for transporting objects, to cause the material between microwave heating cabinet and tempering storehouse continuously
Circulate；
Step 4, microwave generator is opened, and start blade the material of microwave heating cabinet is sufficiently stirred for, it is ensured that its
It is heated evenly；Start blower fan, to be aerated processing to the microwave heating cabinet and the tempering storehouse；
The material temperature of step 5, the in real time material water ratio of measurement microwave heating cabinet grain-entering mouth and microwave heating cabinet grain outlet
Degree；The temperature of the microwave heating cabinet grain outlet is controlled to be in default temperature range；If the material of microwave heating cabinet grain-entering mouth
Moisture content is less than or equal to standard aqueous rate, then carries out step 6；
Step 6, closing microwave generator, open row's grain outlet of microwave material drying device, keep microwave material to dry
Device materials inside is moved, until row's grain is finished.
Preferably, carrying out removal of impurities process step to the material includes screening and magnetic separation mode.
Preferably, controlling the temperature of the microwave heating cabinet grain outlet to be in default temperature range includes adjustment microwave hair
The power of raw device and/or the circulation rate of the device for transporting objects.
Preferably, controlling the temperature of the microwave heating cabinet grain outlet to be in default temperature range also includes：Inspection in real time
The paddy rice temperature of micrometer Wave heating storehouse grain-entering mouth, according to the paddy rice temperature difference of microwave heating cabinet grain-entering mouth and grain outlet, Yi Jiwei
The paddy rice temperature adjustment microwave heating time of Wave heating storehouse grain outlet.
Preferably, it is described that the microwave heating cabinet and the tempering storehouse are aerated in process step, to the microwave
The air output of heating cabinet is not less than 2.4m3/ hkg, the ventilation to the tempering storehouse is not less than 2.4m3/h·kg。
Second method of the present utility model includes microwave generator there is provided a kind of microwave material drying device, described device,
Microwave heating cabinet, tempering storehouse, conveying mechanism and ventilation equipment；The microwave generator is connected with the microwave heating cabinet；Institute
Conveying mechanism is stated to be connected between the tempering storehouse and the microwave heating cabinet；
The microwave heating cabinet includes material container, charging aperture, discharging opening and microwave antenna, and the material is entered by charging aperture
Enter the microwave heating cabinet, be filled into the material container, and under the promotion of the conveying mechanism from the charging aperture to
The discharging opening movement；The microwave antenna is used to heat the material.
Preferably, the ventilation equipment include blower fan and air channel, and the air channel is used to add fan outlet with the microwave
Hot storehouse and the tempering storehouse UNICOM.
Preferably, the microwave generator is connected with the microwave heating cabinet by microwave transmission line.
Preferably, the input port of the microwave antenna is connected with the microwave generator, the radiation of the microwave antenna
Mouthful facing to the material container.
Preferably, the microwave heating cabinet also includes microwave antenna and blade group, at least portion of the blade group Leaf
Surface is divided to be covered by the material in the material container, and the direction flowed with the charging aperture to the discharging opening paddy rice is made
For reference direction, the blade is had an angle between the surface normal direction of paddy rice covering part and the reference direction.
The third aspect of the present utility model is comprised the following steps there is provided a kind of dry materials method, methods described：
Step 1, startup device for transporting objects, to cause the material continuously to be circulated between microwave heating cabinet and tempering storehouse
Flowing；
Step 2, unlatching microwave generator, to cause the material to be heated by microwave；Start blower fan, to add to the microwave
Hot storehouse and the tempering storehouse are aerated processing；
Step 3, the temperature of the control microwave heating cabinet grain outlet are in default temperature range；When material water ratio is low
When predetermined moisture content, then step 4 is carried out；
Step 4, closing microwave generator, open row's grain outlet of microwave material drying device.
The beneficial effect that the utility model can reach：
First, using microwave as the thermal source for industrializing dried material, on the premise of ensureing that temperature of charge does not transfinite, fully
The advantage that microwave firing rate is fast, depth of interaction is big has been given play to, has realized that the dry materials available for industrialized production are processed, does
Dry process energy conservation environmental protection.
2nd, efficient air-supply passage is devised, hot blast is substituted using ventilating air, reduces the temperature between material and air
Gradient is spent, dried materials quality is improved, while reducing the discharge of hot blast, more saves.
The 3rd, the microwave energy exposure that microwave generator is produced is passed to material to be dried using microwave antenna, and is utilized
One group of normal direction is not parallel to the blade in Flow of Goods and Materials direction, material is produced the friendship of locus when flowing through blade surface
Change, solve the uneven heating problem of non-uniform brought of microwave field distribution in big scale of construction applicator.
Brief description of the drawings
Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings；
Fig. 1 is traditional hot blast Paddy rice drier principle schematic；
The operation principle schematic diagram that Fig. 2 provides for the utility model one embodiment；
The blades arrangement mode cross-sectional view that Fig. 3 (a) provides for the utility model one embodiment；
The blades arrangement mode top view that Fig. 3 (b) provides for the utility model one embodiment；
The microwave antenna schematic diagram that Fig. 4 provides for the utility model one embodiment；
The microwave antenna broken section enlarged drawing that Fig. 5 provides for the utility model one embodiment；
The tempering storehouse air channel cross-sectional view that Fig. 6 provides for the utility model one embodiment；
The microwave heating cabinet side view that Fig. 7 (a) provides for the utility model one embodiment；
The microwave heating cabinet cross-sectional view that Fig. 7 (b) provides for the utility model one embodiment；
The microwave heating cabinet side view that Fig. 8 (a) provides for the utility model one embodiment；
The microwave heating cabinet top view that Fig. 8 (b) provides for the utility model one embodiment.
The reference being related in Figure of description is explained as follows：
Wave producer -1, microwave heating cabinet -2, tempering storehouse -3, conveying mechanism -4, ventilation equipment -5；Material container -21, enter
Material mouth -22, discharging opening -23, microwave antenna -24, blade -25, axle -26, drive -27；Rectangular waveguide -241, conoid type loudspeaker
- 242, gap -243, insulation medium board -244；Pipeline -31, pipeline -32；Divide grain wheel -41, swash plate -42, elevator -43；Take out
Wind blower fan -51, air channel -52.
Embodiment
In order that those skilled in the art more fully understand the utility model scheme, it is real below in conjunction with the utility model
The accompanying drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model part, rather than whole embodiments.Based on the reality in the utility model
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all should
When the scope for belonging to the utility model protection.
Material refers to material to be dried in the utility model, specifically, and can include paddy rice, wheat etc. has necessarily
Water content needs the cereal being dried；Melon seeds, peanut, American pistachios, pine nut etc. need that the nut of preservation is dried；Grape
Dry, banana chip, dried mango etc. need the dry fruit being dried, it is necessary to the feed of kept dry transport, and sea-tangle etc. needs dry
Marine product；Agricultural byproducts are not limited to, it is necessary to go the sandy soil of moisture removal, soil, wood chip etc. to fall within the thing in the present embodiment
Expect category；In a word, the present embodiment is not defined to the particular type of material, its for need it is withering production and
Daily necessities.
The utility model embodiment is described in detail with reference to Figure of description as follows：
The present embodiment provides a kind of microwave material drying device, as shown in Fig. 2 including microwave generator 1, microwave heating cabinet
2, tempering storehouse 3, conveying mechanism 4 and ventilation equipment 5.Wherein microwave generator 1 is connected with microwave heating cabinet, and microwave generator is produced
Microwave energy be delivered in microwave heating cabinet；Tempering storehouse 3 is located at microwave heating cabinet top；Conveying mechanism position 4 is in microwave heating cabinet
Between tempering storehouse, Matter Transfer flowing is promoted；Ventilation equipment 5 are by blower fan and the collective effect in air channel, in microwave heating cabinet
Air stream is formed with the material to be dried in tempering storehouse, the moisture on material particles surface is taken away.
As shown in Fig. 2 a kind of microwave heating cabinet 2 of microwave material drying device embodiment 1 of the present utility model, including position
The container 21 for holding material in warehouse bottom, the charging aperture 22 positioned at warehouse side, positioned at the discharging opening 23 of charging aperture offside,
Microwave antenna 24 above container 21, one group of blade 25, and the axle 26 of blade and the transmission rotated with moving axis 26 are installed
Wheel 27.Wherein, the input port of microwave antenna 24 is connected with the output end of microwave generator 1, and radiation port is facing to lower reservoir
Material in 21；Blade 25 is covered by the material in container 21.
In one example, blade 25 is made up of multiple sheet metals, these sheet metals be fixed on the surface of axle 26, according to
Helix (chain-dotted line on the surface of Fig. 2 axis 26) mode is arranged；One end of axle 26 is provided with drive 27, external impetus machinery band
Dynamic drive 27 with moving axis 26 so as to rotate；The rotation direction of axle 26 ensure helix that blade 25 arranged from charging aperture 22 to
Move in the direction of discharging opening 23.
In one example, as shown in Fig. 3 (a), there are three in the cross section towards drive 27 a, circumference
Angle is 120 ° between blade, blade.As shown in Fig. 3 (b), between the normal direction 292 and the axis direction 291 of axle 26 of blade 25
With an angle, under Fig. 3 (b) Leaf arrangement modes, drive need to be rotated in direction as shown in arrow 28, then axle 26 is with movable vane
Piece 25 is moved, and the impetus of axially (291) can be produced to material, material is moved from charging aperture to discharging opening, while also can
Material of stirring makes its generation radially and tangentially move, and realizes the place-exchange of material three dimensions in heating cabinet, overcomes microwave
The problem of field distribution is uneven.Specifically, angle can use different angles, such as 30 °, 35 °, 40 °, 45 °, 50 ° etc., root
According to the different and different dryer settings of material, the angle can be 0 ° (not including 0 °) to selecting between 90 °.Arrived with charging aperture
The direction of discharging opening paddy rice flowing as reference direction, blade by the surface normal direction of paddy rice covering part and reference direction it
Between angle absolute value be more than 0 degree.
In one example, the area of blade 25, distribution institute foundation helix pitch and microwave heating cabinet size,
The rotating speed of the thickness of material and axle 26 is related in container 21, usually, when rotating speed is fixed, blade area is bigger, pitch more
Greatly, then material flowing velocity in heating cabinet is faster, and the heat time is shorter., can also when microwave heating cabinet cross section is larger
Used parallel using multiple vaned axles of installation, it is ensured that blade effect is full and uniform.
It is preferred that, the microwave antenna 24 of the present embodiment uses Waveguide slot antenna, as shown in figure 4, including rectangular waveguide
241, a port 2411 of the rectangular waveguide is the input port of antenna, another short circuit of port 2412.Microwave antenna 24 is along square
The axis direction of shape waveguide 241 is divided into some regions, and the structure type in each region is similar, only size difference, to ensure
The radiation power value in each region is identical.Microwave antenna has divided five regions altogether in the present embodiment, be designated as respectively A1~
A5, below by taking A1 regions as an example, illustrates specific embodiment with reference to Fig. 6.On the waveguide broadside in each region, one group of seam is provided with
Gap 243, the gap connects the inside and outside space of waveguide 241.Position, shape and the area in gap can be according to required radiation
The size design of Simulation of power, not as technical characteristic of the present utility model.Gap uses rectangle elongate slot in the present embodiment,
Axis direction of the broadside in gap perpendicular to waveguide 241.The gap 243 outer surface covered with insulation medium board 244, use
To prevent the dust and steam of waveguide external from entering waveguide, the power capacity of waveguide is reduced.It is used as a skill of the present utility model
Art feature, opens in rectangular waveguide and conoid type loudspeaker 242 is provided with apertured broadside, the low profile and ripple of the conoid type loudspeaker
Lead broadside to fix to form electrical contact, great Kou faces are as radiation port facing to material.Platform bores microwave spoke of the loudspeaker 242 to gap 243
Penetrate field and play certain convergence effect, concentrate microwave radiation field and act in the material below platform cone great Kou faces.Conoid type loudspeaker
Height and great Kou faces size will be designed according to the cross sectional dimensions of microwave heating cabinet, it is ensured that below in material distributed areas
Field strength it is as uniform as possible.The conoid type loudspeaker can use such as metal material to be made.
In one example, the tempering storehouse 3 of the microwave material drying device, including first group of cross section are polygonal
Pipeline 31 and second group of cross section are polygonal pipeline 32.Pipeline 31 is identical with 32 geomery, be placed in parallel；Pipeline 31
Two ends with 32 are individually fixed in tempering bulkhead.One end of pipeline 31 as shown in Figure 2 is to outside space opening, another end seal
Close；Pipeline 32 is to close, connected in the blind end side of pipeline 31 with air channel 52 in the open end side of pipeline 31, and then with taking out
Wind blower fan 51 is connected.Gather aperture on the surface of pipeline 31 and 32；Pipeline 31 and 32 is interspersed by layer, if pipeline 31 is occupied very
Several layers, then pipeline 32 occupy even level, vice versa.The cross-sectional distribution of pipeline 31 and 32 is as shown in Figure 6.When the work of induced draft fans 51
When making, negative pressure is formed in air channel 51 and pipeline 32, the air in material is extracted out, and then produces in material negative pressure；It is outside
Air enters material by the aperture of pipeline 31 and its surface, forms air stream, takes away material particles surface aqueous vapor.
In one example, as shown in Figure 2 there is provided a kind of microwave material drying device, wherein comprising conveying mechanism, it is described
Conveying mechanism includes point grain wheel 41, the swash plate 42 below tempering storehouse, and elevator 43；Divide grain wheel by rotating in tempering storehouse
Material be allocated on swash plate 42, the inclination angle of swash plate 42 and horizontal plane can be more than 45 °, material is flowed under the influence of gravity into microwave
The charging aperture 21 of heating cabinet, it would however also be possible to employ inclination angle less than 45 ° simultaneously flows into material by conveyer belt or scraping plate transmission mechanism
The charging aperture 21 of microwave heating cabinet；The material that microwave heating bin discharge port external 23 flows out enters elevator 43, by the elevator by thing
Material is delivered to tempering silo roof portion, completes circulation.
In one example, ventilation equipment 5 include induced draft fans 51, air channel 52, blowing blower fan 53 and air channel 54.Wherein take out
Wind blower fan 51 is connected by air channel 52 with tempering storehouse；The densely covered aperture in the surface of air channel 54 will connect inside air channel with microwave heating cabinet
Logical, blowing blower fan 53 produces malleation in air channel, and air enters microwave heating cabinet by aperture and passed through material bed.
In one embodiment, as shown in Fig. 7 (a) and Fig. 7 (b), microwave heating cabinet includes cylindrical container 71, the container
Two end faces 711 and 722 it is fixed, center section can be around own axis.The axis horizontal of cylinder 71 or close to water
Placing flat.Charging aperture 72 is located on fixed end face 711；Discharging opening is located on fixed end face 712；Material is contained under container 71
Portion space.Microwave antenna 74 is probeed into the upper space of container 71, thing of the radiation port facing to lower vessel portion by fixed end face 711
Material.Microwave antenna 74 can also have fixed end face 712 to probe into, and it enters the direction of microwave container 71 not as of the present utility model
Technical characteristic.One group of blade 75 is made up of multiple sheet metals, and peace of standing turns in the inner surface of container 71, and blade is according to container 71
A helix 76 on inner surface is arranged, and the important technology of blade is characterised by, its surface normal direction and container axis side
It is not zero to angle theta, i.e. blade surface normal direction is not parallel to axis direction.When container 71 is rotated, blades arrangement institute according to
According to the direction of advance of helix 76 be that discharging opening 73 is pointed to by charging aperture 72.The embodiment above ensures to rotate in container 71
When, the blade entered inside material can produce axial propulsive force, promote material to be moved from charging aperture to discharging opening, while by
It is not parallel in blade surface normal and axial direction, motive force radially and tangentially can be also produced, drives material to transport radially and tangentially
It is dynamic, while the frictional force of cylindrical container inwall can also drive material tangentially to move, finally realize material three in microwave field
The locus of individual dimension is exchanged.The concrete shape of the Leaf 75 of the present embodiment 2, size can be held according to rotating speed, the material of container
Amount and drying process design, are not belonging to technical characteristic of the present utility model.In addition, driving the power machinery system that container is rotated
Belong to and being not detailed in mature technology, the present embodiment.
In another embodiment, as shown in Fig. 8 (a) and Fig. 8 (b), it is that microwave adds with embodiment difference before
The concrete structure in hot storehouse.Microwave heating cabinet in the present embodiment includes tunnel packaging container 81, and conveyer belt 82 is arranged at the bottom of container 81,
There is charging aperture 83 one end of container 81, and the other end has discharging opening 84.Material enters container by charging aperture 83, and on conveyer belt 82
Form certain thickness heap high；Conveyer belt is moved under the drive of outside dynamic power machine structure from charging aperture to discharging opening, so that
Material is taken to discharging opening by charging aperture.Microwave antenna 85 is located at the upper space of container 81, and lower section is passed its radiation port down
Send the material taken.The present embodiment also includes one group of blade 86, and the blade is made up of multiple foils；Blade by connecting rod with
The bulkhead of container 81 is fixed；Blade-section is all embedded in the material on conveyer belt 82；As shown in Fig. 8 (a), Flow of Goods and Materials side
Discharging opening (right side), i.e. x directions are flowed to by charging aperture (left side), then important technology of the present utility model is characterised by,
The surface normal direction of each blade is in angle theta with Flow of Goods and Materials direction in vertical plane (XOZ planes), and θ is not 0；Such as
Shown in Fig. 8 (b), equally as important technology feature of the present utility model, the surface normal direction of each blade is in horizontal plane
With Flow of Goods and Materials direction in included angle in (XOY plane), and φ is not 0.Under above-mentioned blade mounting condition, when conveyer belt drives
During Flow of Goods and Materials, material produces motion relative to blade surface, then can be changed the direction of motion by blade surface, produces Y and Z-direction
Motion, produce locus exchange.
In one example, in order to realize sufficient place-exchange effect in container, the use of the present embodiment preferably is such as
Blades arrangement scheme shown in Fig. 8 (b), i.e., by blade, 86 points are two groups, and first group of normal direction of blade 861 is in XOY plane
With Flow of Goods and Materials angular separation be φ, then second of normal direction of blade 862 in XOY plane with Flow of Goods and Materials angular separation
For-φ；In every group of blade, it is fixed on by several blades on a connecting rod 863 and constitutes a row；The storehouse of connecting rod 863 and container 81
Wall is fixed；It is preferred that, if first group of blade 861 is arranged in odd column, second group of blade 862 is then arranged in even column, instead
It is as the same；It is preferred that, the position of first group of blade 861 in the Y direction is interleaved with the position of second group of blade 862 in the Y direction.
In one embodiment there is provided a kind of microwave material drying means, methods described uses microwave material drying device,
Specifically comprise the following steps：
Step 1, removal of impurities processing is carried out to the material, described material is loaded by dry materials by device for transporting objects
Device.
In the step 1, removal of impurities processing is carried out to the material can use the mode of such as screening or magnetic separation.With
Exemplified by material is material, screening mode can remove the bulky grain thing in material, and magnetic separation can then remove the huge sum of money in material
Belong to impurity.Different with volume according to the rated power of microwave heating cabinet, the inventory of addition is also different, in one example
Material charge weight in microwave heating cabinet is in the range of 6~10kg/kW, the material charge weight in tempering storehouse is the 8 of microwave heating cabinet
~10 times.
Step 2, the startup device for transporting objects, to cause the material between microwave heating cabinet and tempering storehouse continuously
After circulating, microwave power is opened, while being sufficiently stirred for the material of microwave heating cabinet, it is ensured that it is heated evenly.
In the step 2, the material in the device for transporting objects is in the microwave heating cabinet and the tempering storehouse
Middle circulation, is heated, then in the tempering storehouse, the material is gradually cooled down in the microwave heating cabinet, and wherein
Moisture is pulled away with air flow, so circulation, so that reaching makes the purpose of the dry materials.
The material temperature of step 3, the in real time material water ratio of measurement microwave heating cabinet grain-entering mouth and microwave heating cabinet grain outlet
Degree；The temperature of the microwave heating cabinet grain outlet is controlled to be in default temperature range in real time；If microwave heating cabinet grain-entering mouth
Material water ratio be less than or equal to standard aqueous rate, then carry out after the step of；
If material heated temperature in microwave heating cabinet is too high to cause high " percent cracked rice ", have a strong impact on material and do
Dry quality., can be with addition to Power Control by controlling the power of microwave to control the temperature in microwave heating cabinet
Temperature control is realized by the time of the microwave heating cabinet using control material.
So that the material that microwave is heated is rice as an example, control temperature is proper temperature between 38-40 °, then
The temperature of the grain outlet of measurement microwave heating cabinet is needed, if the temperature of charge of microwave heating cabinet grain outlet is reduced more than 40 DEG C
Microwave heating time；If the temperature of charge of microwave heating cabinet grain outlet is less than 38 DEG C, increase microwave heating time.Add in control
While hot temperature, the moisture content of rice is measured, if moisture content is less than or equal to default moisture content, the step after continuing
Suddenly.
In step 3, different air supply modes is used for tempering storehouse and the microwave heating cabinet, according to thing to be dried
Expect for exemplified by paddy rice, for microwave heating cabinet, using air blower according to 2.4m3/ hkg wind flow is into microwave heating cabinet
Paddy rice is divulged information；For tempering storehouse, using air exhauster, according to 1.8m3/ hkg wind flow is to the paddy rice exhausting in tempering storehouse.It is real
When measure the paddy rice moisture content of microwave heating cabinet charging aperture, when the moisture content is less than or equal to 15%, the step of after execution.
Step 4, closing microwave power, open row's grain outlet of microwave material drying device, keep microwave material to dry and fill
Materials inside motion is put, until row's grain is finished.
Table 1 below is the measurement of technical parameter result using the present embodiment method：
The microwave drier measurement of technical parameter result of table 1
It can be seen that, based on the above method, the moisture content of rice has reached less than 15% requirement of drying, and percentage of damage increases
Numerical value is only 0.1%, and severe cracking breakout is only 1.8%, meets and is required for drying for paddy rice.
Table 2 is referred to, table 2 is the utility model grain drying device and traditional hot-air drying device parameter comparison table.
The grain drying device of table 2 and hot-air drying device parameter comparison
As shown in table 2, the utility model grain drying device improves the temperature of material using the penetrability heating of microwave, makes
Moisture vaporization in material, the water vapour being evaporated drains and reached the purpose of drying cereal by dehumidification system.This reality
Have drying rate fast with new drying device by microwaves, efficiency high, environmental protection and energy saving, homogeneous heating unanimously waits special inside and outside cereal
Point, is in response to the novel device of low-carbon economy.
Compared with existing dry materials method, advantage of the present utility model is to substitute traditional hot blast, ring using microwave energy
Protect pollution-free, heating process is fast, penetration depth is big, and energy consumption is low, uniform, quick, high efficiency can be realized with reference to sufficient stirring
Heating.Temperature of charge after keeping controlling heating by control material flowing velocity on the premise of microwave power is constant, it is real
Existing production capacity is maximized.
It should be appreciated that referenced herein " multiple " refer to two or more."and/or", description association
The incidence relation of object, expression may have three kinds of relations, for example, A and/or B, can be represented：Individualism A, while there is A
And B, individualism B these three situations.It is a kind of relation of "or" that character "/", which typicallys represent forward-backward correlation object,.
Above-mentioned the utility model embodiment sequence number is for illustration only, and the quality of embodiment is not represented.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (10)
1. a kind of microwave material drying device, it is characterised in that described device includes microwave generator (1), microwave heating cabinet
(2), tempering storehouse (3), conveying mechanism (4) and ventilation equipment (5)；The microwave generator (1) and the microwave heating cabinet (2)
Connection；The conveying mechanism (4) is connected between the tempering storehouse (3) and the microwave heating cabinet (2)；
The microwave heating cabinet (2) includes material container (21), charging aperture (22), discharging opening (23) and microwave antenna (24), institute
State material and the microwave heating cabinet (2) is entered by charging aperture (22), be filled into the material container (21), and in the conveying
It is mobile from the charging aperture (22) to the discharging opening (23) under the promotion of mechanism (4)；The microwave antenna (24) is used to heat
The material.
2. device according to claim 1, it is characterised in that the ventilation equipment (5) include blower fan (51) and air channel
(52), the air channel is used for fan outlet and the microwave heating cabinet (2) and the tempering storehouse (3) UNICOM.
3. device according to claim 1, it is characterised in that the input port of the microwave antenna (24) and the microwave
Generator (1) is connected, and the radiation port of the microwave antenna (24) is facing to the material container (21).
4. device according to claim 1, it is characterised in that the microwave heating cabinet (2) also includes microwave antenna (24)
With blade group, at least part surface of the blade group Leaf (25) is covered by the material in the material container, and with
The charging aperture (22) is to the direction of the discharging opening (23) paddy rice flowing as reference direction, and the blade is by paddy rice covering part
There is an angle between the surface normal direction divided and the reference direction.
5. device according to claim 3, it is characterised in that the microwave antenna also includes platform conical horn (242), institute
Platform conical horn (242) is stated with small-bore end face and heavy caliber end face, the small-bore end face is opened with rectangular waveguide (241)
The broadside for having gap (243) is connected, and forms electrical contact, and the heavy caliber end face is towards the material container (21).
6. device according to claim 1, it is characterised in that the microwave heating cabinet (2) includes some metal shafts
(26), the metal shaft is located in the material container (21) of the microwave heating cabinet, its axis direction and the material container
(21) flow direction of interior material is consistent；Blade (25) in the microwave heating cabinet (2) is arranged in the metal shaft (26),
And helically line is distributed.
7. device according to claim 1, it is characterised in that the material container (21) is drum, axis in water
Square to placement；Blade (25) is installed on the material container (21) inwall, and blade (25) is in spiral distribution along the axis；Institute
State the upper space that microwave antenna (24) is probeed into the material container (21) by an end face of the material container (21).
8. device according to claim 1, it is characterised in that the microwave heating cabinet (2) includes tunnel-like container (81),
With some conveyer belts (82) being placed horizontally in the tunnel-like container (81), the material is located at the conveyer belt (82)
On；The microwave antenna (24) is located above the conveyer belt (82)；Blade (25) portion is located at the top of the conveyer belt, described
Blade (25) is partly stretched into the material on the conveyer belt (82).
9. device according to claim 1, it is characterised in that the tempering storehouse (3) includes left and right directions or fore-and-aft direction
Pipeline (31,32)；The cross section of the pipeline (31,32) is polygon, and two ends and the bulkhead of the tempering storehouse (3) are fixed,
Gather aperture on pipeline (31, the 32) surface；The pipeline (31,32) is some in the short transverse distribution of the tempering storehouse (3)
Layer, if one end of wherein a certain layer pipeline is connected with the air channel of the ventilation equipment, other end closing, its adjacent two layers pipe
One end opening, the other end closing in road.
10. device according to claim 1, it is characterised in that the microwave generator (1) and the microwave heating cabinet
(2) connected by microwave transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720057341.1U CN206572852U (en) | 2017-01-18 | 2017-01-18 | A kind of microwave material drying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720057341.1U CN206572852U (en) | 2017-01-18 | 2017-01-18 | A kind of microwave material drying device |
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| CN206572852U true CN206572852U (en) | 2017-10-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871577A (en) * | 2017-01-18 | 2017-06-20 | 江苏麦克威微波技术有限公司 | A kind of microwave material drying device and microwave material drying means |
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2017
- 2017-01-18 CN CN201720057341.1U patent/CN206572852U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871577A (en) * | 2017-01-18 | 2017-06-20 | 江苏麦克威微波技术有限公司 | A kind of microwave material drying device and microwave material drying means |
| CN106871577B (en) * | 2017-01-18 | 2023-09-19 | 江苏麦克威微波技术有限公司 | Microwave material drying device and microwave material drying method |
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