CN113758218A - High-precision grain drying device and method - Google Patents
High-precision grain drying device and method Download PDFInfo
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- CN113758218A CN113758218A CN202111042369.5A CN202111042369A CN113758218A CN 113758218 A CN113758218 A CN 113758218A CN 202111042369 A CN202111042369 A CN 202111042369A CN 113758218 A CN113758218 A CN 113758218A
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- 238000001035 drying Methods 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title abstract description 4
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 19
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 230000035784 germination Effects 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
- F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
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- 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
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- 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
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- 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
- F26B25/06—Chambers, containers, or receptacles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/06—Grains, e.g. cereals, wheat, rice, corn
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- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention belongs to the field of agricultural product processing equipment, and particularly discloses a high-precision grain drying device and a method thereof. The grain drying device comprises a shell, a drying mechanism, a lifter and an electron microscope; the drying mechanism and the hoister are arranged in the shell; an inclined plate is arranged obliquely below the drying mechanism and connected with the hoister; the inclined plate is provided with an electron microscope; the electron microscope includes a focus knob and a focus amplifier. The grain drying device can realize accurate control of the grain drying process.
Description
Technical Field
The invention belongs to the field of agricultural product processing equipment, and particularly relates to a high-precision grain drying device and a method thereof.
Background
Along with the improvement of the intelligent mechanical equipment level in China, the control on the grain post-production treatment machinery is more required to be accurate, the grain quality is poor due to overheating in the grain drying process, and the grain mildew or germination is caused due to excessive residual moisture in the grain in insufficient heating time. Therefore, when the wet grain is dried, the requirements on the drying time and the drying process are higher and higher. The grain drying degree can be controlled more accurately.
Generally adopt the on-line resistance moisture meter to survey the grain of drying among the prior art, but adopt the on-line resistance moisture meter to survey moisture and can not carry out the precision measurement to grain moisture, measure grain the most accurate mode and measure for adopting electron microscope to measure grain, but because electron microscope's focus distance is limited, measured grain quantity is too little, so adopt electron microscope to measure grain moisture and do not use on a large scale always. In order to improve the grain drying precision, the focusing distance of an electron microscope is limited, and the problem of few measured samples needs to be solved.
Disclosure of Invention
Aiming at the problems, the invention discloses a high-precision grain drying device which comprises a shell 1, a drying mechanism, a lifter 6 and an electron microscope 5;
the drying mechanism and the hoister 6 are arranged in the shell 1;
an inclined plate 4 is arranged obliquely below the drying mechanism, and the inclined plate 4 is connected with the hoisting machine 6;
the inclined plate 4 is provided with an electron microscope 5;
the electron microscope 5 includes a focusing knob 55 and a focusing amplifier.
Further, the focus amplifier comprises a first gear 51, a second gear 52, a third gear 53, a fourth gear 54, a gear connecting rod 56, a knife-edge support 57 and a support rod 59;
the first gear 51 is meshed with the focusing knob 55, the second gear 52 is coaxially connected with the first gear 51, the second gear 52 is meshed with the third gear 53, the third gear 53 is coaxially connected with the fourth gear 54,
the gear connecting rod 56 comprises an arc-shaped end and a linear end, the arc-shaped end of the gear connecting rod 56 is provided with teeth, and the arc-shaped end of the gear connecting rod 56 is meshed with the fourth gear 54;
the straight end of the gear connecting rod 56 is movably connected with a supporting rod 59, and the middle part of the gear connecting rod 56 is connected with the knife-edge support 57; the blade-shaped support 57 is fixedly connected with one of the convex lenses of the electron microscope 5.
Further, the middle part of the gear connecting rod 56 is the joint of the arc end and the linear end, the joint is formed by arranging an inner groove at the joint of the arc end and the linear end, the inner groove is shaped like an inner triangle, and the blade-shaped support 57 is clamped into the inner groove.
Furthermore, the drying mechanism comprises n horizontal conveyor belts, the n horizontal conveyor belts are arranged in the shell 1 in a crossed manner, one side of the uppermost horizontal conveyor belt is provided with an air inlet on the shell 1, and one side of the lowermost horizontal conveyor belt is provided with an air outlet on the shell 1.
Furthermore, heating devices are arranged among the n horizontal conveying belts.
Further, the heating device comprises a ceramic heating sheet and a heating resistance wire.
The invention also discloses a drying method used by the high-precision grain drying device, and the drying method comprises the following steps:
s1: carrying out primary processing on the grain to finish the primary drying process of the grain;
s2: measuring the moisture content of the grain after the preliminary drying by an electron microscope;
and S3, grading the grain after the primary drying according to the measurement result in the step S2, and respectively carrying out the next precise drying according to different grades.
Further, in step S2, when the grain falls on the inclined plate, the control arm samples the grain at regular time and provides it to the electron microscope for detection, and the focusing knob of the electron microscope is adjusted to keep the condition of seeing the water molecules in the grain, and the condition of seeing the grain in the largest quantity.
Further, the movement speed of the horizontal conveyor belt is calculated in the following manner:
V＝(n*a*s)/(A-B)
wherein A represents the number of water molecules in a single grain, B represents the number of water molecules in a single grain of a primary drying product, a represents the reduction speed of the water molecules in unit time on the horizontal conveyor belt, s represents the length of the single horizontal conveyor belt, and n represents the number of the horizontal conveyor belts.
Advantageous effects
1) Through set up electron microscope in drying device, observe the inside water content of grain after the stoving for carry out accurate assurance to the grain water content.
2) By arranging the focusing amplifier, more internal conditions of the grains can be seen in the electron microscope.
3) Many conveyer belts make the stoving degree to grain carry out accurate assurance.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows a schematic structural diagram according to an embodiment of the invention;
fig. 2 shows a schematic diagram of a focus amplifier structure according to an embodiment of the present invention.
In the figure: 1. a housing; 2. a grain inlet; 31. a first horizontal conveyor belt; 32. a second horizontal conveyor belt; 33. a third horizontal conveyor belt; 34. a fourth horizontal conveyor belt; 35. a fifth horizontal conveyor belt; 36. a sixth horizontal conveyor belt; 37. a seventh horizontal conveyor belt; 4. a sloping plate; 5. an electron microscope; 51. a first gear; 52. a second gear; 53. a third gear; 54. a fourth gear; 55. a focusing knob; 56. a gear connecting rod; 57. supporting in a blade shape; 58. a fulcrum; 59. a support bar; 6. a hoist; 71. a cover plate; 8. a grain outlet; 9. an air inlet; 10. and (7) air outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention discloses a high-precision grain drying device which comprises a lifter 6 and a drying mechanism. The elevator 6 and the drying mechanism are both arranged inside the housing 1. An inclined plate 4 is arranged obliquely below the drying mechanism, and the inclined plate 4 is connected with the hoisting machine 6. The drying mechanism comprises n horizontal conveyor belts, and the n horizontal conveyor belts are arranged in the shell 1 in a crossed mode. Further, an air inlet 9 is formed in the shell 1 on one side of the uppermost horizontal conveyor belt, an air outlet 10 is formed in the shell 1 on one side of the lowermost horizontal conveyor belt, hot air enters from the air inlet 9 and then sequentially passes through the n horizontal conveyor belts, and finally the hot air is discharged through the air outlet 10, so that preliminary drying of grains is completed. The upper end of the shell 1 is provided with a grain inlet 2, the grain inlet 2 is funnel-shaped, the upper part is wide, the lower part is narrow, and grains fall onto the uppermost strip of the horizontal conveyor belt from the grain inlet 2. A grain outlet 8 is arranged on the bottom surface of the shell 1, and dried grains flow out from the grain outlet 8. And an inclined plate 4 is arranged below the lowest one of the n horizontal conveying belts. The grains fall from the horizontal conveyor belt into the inclined plate 4 and then into the elevator 6 through the inclined plate 4. The inclined plate 4 is provided with an electron microscope 5, and the electron microscope 5 samples from grains at regular time to observe the water content of the grains. A plurality of grain discharging openings are formed in one side, close to the conveyor belt, of the lifting machine 6, and the positions of the grain discharging openings correspond to the positions of the horizontal conveyor belt in the horizontal position. Further, unload grain mouth and set up apron 71, apron 71 with lifting machine 6 swing joint, when apron 71 is closed, unload the grain mouth and close, grain can not follow corresponding grain mouth of unloading and flow. When the cover plate 71 is opened, the grain discharging opening is opened, grains flow into the horizontal conveyor belt from the corresponding grain discharging opening of the hoister 6, and the grains are dried for the second time. The bottom of the elevator 6 is provided with a grain outlet 8, the grain outlet 8 is provided with a valve, and the position of the valve corresponds to the position of the grain outlet 8 on the bottom surface of the shell 1. When the grain in the hoister 6 reaches the drying level, the valve is opened, and the grain flows out from the grain outlet 8.
Illustratively, a grain inlet 2 is arranged at the upper right end of the shell 1, a first horizontal conveyor belt 31 is arranged below the grain inlet 2, and the first horizontal conveyor belt 31 moves anticlockwise. And an air inlet 9 is formed in the upper part of the right side surface of the shell 1. The level of the air inlet 9 is consistent with that of the first horizontal conveyor belt 31. After the grains fall to the first horizontal conveyor belt 31 from the grain inlet 2, hot air is blown in from the air inlet 9 to dry the grains. A second horizontal conveyor belt 32, a third horizontal conveyor belt 33, a fourth horizontal conveyor belt 34, a fifth horizontal conveyor belt 35, a sixth horizontal conveyor belt 36 and a seventh horizontal conveyor belt 37 are sequentially arranged below the first horizontal conveyor belt 31, and the first horizontal conveyor belt 31, the second horizontal conveyor belt 32, the third horizontal conveyor belt 33, the fourth horizontal conveyor belt 34, the fifth horizontal conveyor belt 35, the sixth horizontal conveyor belt 36 and the seventh horizontal conveyor belt 37 are arranged in a crossed manner. The first horizontal conveyor belt 31, the third horizontal conveyor belt 33, the fifth horizontal conveyor belt 35 and the seventh horizontal conveyor belt 37 all move counterclockwise, and the second horizontal conveyor belt 32, the fourth horizontal conveyor belt 34 and the sixth horizontal conveyor belt 36 all move clockwise. The grains sequentially pass through the first horizontal conveyor belt 31, the second horizontal conveyor belt 32, the third horizontal conveyor belt 33, the fourth horizontal conveyor belt 34, the fifth horizontal conveyor belt 35, the sixth horizontal conveyor belt 36 and the seventh horizontal conveyor belt 37 to finish primary drying. An air outlet 10 is formed in the lower portion of the right side of the shell 1, the horizontal height of the air outlet 10 corresponds to that of the seventh horizontal conveyor belt 37, hot air enters from the air inlet 9, sequentially passes through the first horizontal conveyor belt 31, the second horizontal conveyor belt 32, the third horizontal conveyor belt 33, the fourth horizontal conveyor belt 34, the fifth horizontal conveyor belt 35, the sixth horizontal conveyor belt 36 and the seventh horizontal conveyor belt 37, is used for drying grains, is discharged from the air outlet 10, and simultaneously discharges water vapor in the shell 1.
Preferably, for drying more uniformly. Heating devices are arranged between the first horizontal conveyor belt 31 and the second horizontal conveyor belt 32, between the second horizontal conveyor belt 32 and the third horizontal conveyor belt 33, between the third horizontal conveyor belt 33 and the fourth horizontal conveyor belt 34, between the fourth horizontal conveyor belt 34 and the fifth horizontal conveyor belt 35, between the fifth horizontal conveyor belt 35 and the sixth horizontal conveyor belt 36, and between the sixth horizontal conveyor belt 36 and the seventh horizontal conveyor belt 37, for example, the heating devices are ceramic heating plates, heating resistance wires, and the like. The drying effect difference on each horizontal conveyor belt is avoided through the heating device. At this moment, the air inlet 9 only needs to blow in dry air, and the dry air is discharged from the air outlet 10 after passing through each horizontal conveyor belt, takes away the produced steam in the drying process, avoids the air humidity in the casing 1, leads to drying efficiency to reduce, makes the air keeps dry constantly in the casing 1.
Preferably, the temperature of the heating device can be adjusted according to different gears. The movement speeds of the first horizontal conveyor belt 31, the second horizontal conveyor belt 32, the third horizontal conveyor belt 33, the fourth horizontal conveyor belt 34, the fifth horizontal conveyor belt 35, the sixth horizontal conveyor belt 36 and the seventh horizontal conveyor belt 37 can also be independently adjusted. The grain is accurately dried by adjusting the temperature of the heating device or the running speed of each horizontal conveyor belt.
The left side in the casing 1 is provided with a lifter 6, and grains after primary drying fall into the inclined plate 4 through the seventh horizontal conveyor belt 37 and finally fall into the lifter 6. Grain falls into when swash plate 4, electron microscope 5 carries out timing sampling to the grain after drying and detects, carries out categorised stoving to grain according to the difference of the grain water content after preliminary drying. Specifically, the electron microscope 5 includes a manipulator which periodically takes a sample from the tilt plate 4 and supplies the sample to the electron microscope 5 for examination. The electron microscope 5 observes the quantity of water molecules in the grain, and gives the grade of the water content of the grain according to the quantity of the water molecules. Illustratively, the grain has four water content grades, namely a primary, secondary, tertiary and quaternary drying product. The electron microscope 5 sends the water content grade of the grain to the elevator 6 at regular time. After receiving the water content grade of the grain, the hoister 6 hoists the grain to different heights according to the water content grade of the grain, opens the cover plates 71 at different heights, and pours the grain into different horizontal conveyor belts for secondary accurate drying. For example, when the water content grade of the grain is defined as a primary drying product, the secondary drying is not required. The lifting machine 6 opens the valve at the bottom, and grains are directly discharged from the grain outlet 8. When the water content level of the grain is defined as a secondary drying product, the grain is lifted by the lifter 6 to the height of the sixth horizontal conveyor belt 36, the cover plate 71 corresponding to the sixth horizontal conveyor belt 36 is opened, and the grain falls into the sixth horizontal conveyor belt 36 through the cover plate 71 under the action of gravity for secondary drying. When the water content level of the grain is defined as a tertiary drying product, the grain is lifted by the lifter 6 to the height of the fourth horizontal conveyor 34, the cover plate 71 corresponding to the fourth horizontal conveyor 34 is opened, and the grain falls into the fourth horizontal conveyor 34 through the cover plate 71 under the action of gravity for secondary drying. When the water content level of the grain is defined as a four-level drying product, the grain is lifted by the lifter 6 to the height of the first horizontal conveyor belt 31, the cover plate 71 corresponding to the first horizontal conveyor belt 31 is opened, and the grain falls into the first horizontal conveyor belt 31 through the cover plate 71 under the action of gravity to be dried for the second time.
Specifically, the electron microscope 5 further includes a focusing knob and a focusing amplifier. The focusing knob is used for adjusting the focal length of the electron microscope 5. Further, the focusing knob is connected with the focusing amplifier through a gear. The focus amplifier comprises a first gear 51, a second gear 52, a third gear 53, a fourth gear 54, a gear connecting rod 56 and a knife-edge support 57. The first gear 51 is meshed with the focusing knob, and the focusing knob drives the first gear 51 to rotate. The second gear 52 is coaxially connected with the first gear 51, and the first gear 51 drives the second gear 52 to coaxially rotate. The second gear 52 is engaged with the third gear 53, and the second gear 52 drives the third gear 53 to rotate. The third gear 53 is coaxially connected with the fourth gear 54, and the third gear 53 drives the fourth gear 54 to rotate. Further, the diameter of the focus adjustment knob is the same as the diameters of the second gear 52 and the fourth gear 54, the diameter of the first gear 51 is the same as the diameter of the third gear 53, and after the focus adjustment knob is rotated, the fourth gear 54 and the focus adjustment gear rotate at the same speed and in the same amplitude. The gear connecting rod 56 is in a sickle shape, and the gear connecting rod 56 comprises an arc-shaped end and a linear end. The arc-shaped end of the gear connecting rod 56 is provided with teeth, the arc-shaped end of the gear connecting rod 56 is meshed with the fourth gear 54, and the fourth gear 54 drives the arc-shaped end of the gear connecting rod 56 to rotate. The straight end of the gear connecting rod 56 is movably connected with a supporting rod 59, and the gear connecting rod 56 rotates around the supporting rod 58 by taking the connection position as a fulcrum 58. The gear connecting rod 56 is connected with the blade-shaped support 57 in the middle, specifically, the middle is a joint of an arc end and a straight end, an inner groove is formed in the joint of the arc end and the straight end, the inner groove is triangular, and the blade-shaped support 57 is clamped in the inner groove. The blade support 57 is fixedly connected to a convex lens (not shown) of the electron microscope 5. The knife-edge support 57, gear connecting rod 56 and fulcrum 58 form a lever. When the focusing knob rotates, the gear connecting rod 56 is indirectly driven to rotate, and the gear connecting rod 56 rotates around the fulcrum 58 to drive the blade-shaped support 57 to rotate. Because the distance between the tooth and the fulcrum 58 is larger than that between the concave part and the fulcrum 58. The distance between the tooth and the fulcrum 58 is set to be a first moment, the distance between the concave part and the fulcrum 58 is set to be a second moment, the first moment is larger than the second moment, and on the other hand, the motion amplitude of the focusing knob of the electron microscope 5 can be effectively amplified because the gear connecting rod 56 is in a sickle shape. The magnification of the electron microscope 5 can be further adjusted by magnifying the movement amplitude of the focus knob of the electron microscope 5. The magnification times of the electron microscope 5 are adjusted to the maximum times of the visible water drops, and the grain moisture content is calculated according to the proportion of the water drops in each grain. And observing the moisture content in the grains as much as possible.
The invention also discloses a high-precision grain drying method, which comprises the following steps:
s1: and carrying out primary processing on the grains to finish the primary drying process of the grains.
Specifically, the grains are controlled to fall into the first horizontal conveyor belt 31 from the grain inlet 2 at a certain speed, then the grains sequentially pass through the second horizontal conveyor belt 32, the third horizontal conveyor belt 33, the fourth horizontal conveyor belt 34, the fifth horizontal conveyor belt 35, the sixth horizontal conveyor belt 36 and the seventh horizontal conveyor belt 37, are dried, and finally fall into the bottom of the elevator 6 through a slope. The hot air quantity of the air inlet 9 is adjusted, and the running speed of each horizontal conveyor belt is adjusted at the same time, so that different drying requirements on the grains are met. Preferably, heating devices such as ceramic heating sheets and heating resistance wires are adopted to heat the grains, hot air is not needed at the moment, only dry air flows into the shell 1 from the air inlet 9, and water vapor generated by the heated grains is taken away from the air outlet 10.
S2: and measuring the moisture content of the grains subjected to primary drying by using an electron microscope.
Specifically, when the grain falls on the inclined plate 4, the mechanical arm is controlled to sample the grain at regular time and provide the grain to the electron microscope 5 for detection. The focusing knob of the electron microscope 5 is adjusted to keep the condition that water molecules in the grains can be seen, and the condition that the grains with the largest quantity can be seen.
S3: and grading the grain after the preliminary drying according to the measurement result in the step S2, and respectively performing the next accurate drying according to different grades.
Specifically, the grains to be primarily dried are divided into a first-level drying product, a second-level drying product, a third-level drying product and a fourth-level drying product according to the proportion of water molecules. The electron microscope 5 sends the water content grade information of the grain to the elevator 6. And after receiving the water content grade information, the hoister 6 carries out different treatments on the grains with different grades. Illustratively, when the primarily dried grains are primary dried products, secondary drying is not needed, and the elevator 6 directly opens the valve at the bottom, so that the grains are directly discharged from the grain outlet 8. When moisture is less in the grain of preliminary drying, when the grain of preliminary drying is defined as the second grade article of drying, lifting machine 6 promotes the grain of preliminary drying to the height of sixth horizontal conveyor 36, then opens corresponding apron 71, and the grain after the preliminary drying passes through apron 71 flows under the effect of gravity sixth horizontal conveyor 36, then passes through fall into behind the sixth conveyor seventh horizontal conveyor 37, pass through after that swash plate 4 falls into again lifting machine 6 passes through during swash plate 4, electron microscope 5 detects the grain after the secondary drying once more, reaches after the stoving requirement, and the grain after the secondary drying finally follows grain outlet 8 flows out. When the moisture in the primarily dried grains is moderate, the primarily dried grains are defined as a tertiary-dried product. The lifter 6 lifts the primarily dried grains to the height of the fourth horizontal conveyor 34, then opens the corresponding cover plate 71, the primarily dried grains flow to the fourth horizontal conveyor 34 through the cover plate 71 under the action of gravity, then the primarily dried grains sequentially pass through the fifth horizontal conveyor 35, the sixth horizontal conveyor 36 and the seventh horizontal conveyor 37, and finally fall into the lifter 6 again along the inclined plate 4. When the grains pass through the inclined plate 4, the grains after secondary drying are detected again by the electron microscope 5, and after the drying requirements are met, the grains after secondary drying finally flow out from the grain outlet 8.
When the moisture of the primarily dried grain is high, the primarily dried grain is defined as a four-stage drying product. The elevator 6 lifts the primarily dried grains to the height of the second horizontal conveyor belt 32, then opens the corresponding cover plate 71, the primarily dried grains flow to the second horizontal conveyor belt 32 through the cover plate 71 under the action of gravity, then fall into the third horizontal conveyor belt 33, the fourth horizontal conveyor belt 34, the fifth horizontal conveyor belt 35, the sixth horizontal conveyor belt 36 and the seventh horizontal conveyor belt 37 through the second conveyor belt, then fall into the elevator 6 again through the inclined plate 4, and when passing through the inclined plate 4, the electron microscope 5 detects the secondarily dried grains again, and after the drying requirement is met, the secondarily dried grains finally flow out from the grain outlet 8.
Furthermore, the moving speed of each horizontal conveyor belt is adjusted according to the amount of water molecules of each grain observed by the electron microscope 5 and related parameters.
Illustratively, the formula for calculating the movement speed of the horizontal conveyor belt is as follows:
V＝(n*a*s)/(A-B)
wherein A represents the number of water molecules in a single grain, B represents the number of water molecules in a single grain of a primary drying product, a represents the reduction speed of the water molecules in unit time on the horizontal conveyor belt, s represents the length of the single horizontal conveyor belt, and n represents the number of the horizontal conveyor belts.
The above formula is derived from the following formula:
(A-B)/a＝(n*s)/V
although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A high-precision grain drying device, which is characterized in that,
the grain drying device comprises a shell (1), a drying mechanism, a lifter (6) and an electron microscope (5);
the drying mechanism and the hoister (6) are arranged in the shell (1);
an inclined plate (4) is arranged obliquely below the drying mechanism, and the inclined plate (4) is connected with the hoisting machine (6);
the inclined plate (4) is provided with an electron microscope (5);
the electron microscope (5) comprises a focusing knob (55) and a focusing amplifier.
2. The high precision grain drying apparatus according to claim 1,
the focusing amplifier comprises a first gear (51), a second gear (52), a third gear (53), a fourth gear (54), a gear connecting rod (56), a blade-shaped support (57) and a support rod (59);
the first gear (51) is meshed with the focusing knob (55), the second gear (52) is coaxially connected with the first gear (51), the second gear (52) is meshed with the third gear (53), and the third gear (53) is coaxially connected with the fourth gear (54),
the gear connecting rod (56) comprises an arc end and a linear end, the arc end of the gear connecting rod (56) is provided with teeth, and the arc end of the gear connecting rod (56) is meshed with the fourth gear (54);
the straight line end of the gear connecting rod (56) is movably connected with a supporting rod (59), and the middle part of the gear connecting rod (56) is connected with the blade-shaped support (57); the blade-shaped support (57) is fixedly connected with a convex lens of the electron microscope (5).
3. The high precision grain drying apparatus according to claim 2,
the middle part of the gear connecting rod (56) is the joint of the arc end and the straight end, the joint is formed in a mode that an inner groove is formed in the joint of the arc end and the straight end, the inner groove is shaped like an inner triangle, and the blade-shaped support (57) is clamped into the inner groove.
4. The high precision grain drying apparatus according to claim 1,
the drying mechanism comprises n horizontal conveying belts, the n horizontal conveying belts are arranged in the shell (1) in a crossed mode, an air inlet is formed in the shell (1) on one side of the uppermost horizontal conveying belt, and an air outlet is formed in the shell (1) on one side of the lowermost horizontal conveying belt.
5. The high precision grain drying apparatus according to claim 4,
and heating devices are arranged among the n horizontal conveying belts.
6. The high precision grain drying apparatus according to claim 5,
the heating device comprises a ceramic heating sheet and a heating resistance wire.
7. A drying method used by the high-precision grain drying device of any one of claims 1 to 6, wherein the drying method comprises the following steps:
s1: carrying out primary processing on the grain to finish the primary drying process of the grain;
s2: measuring the moisture content of the grain after the preliminary drying by an electron microscope;
and S3, grading the grain after the primary drying according to the measurement result in the step S2, and respectively carrying out the next precise drying according to different grades.
8. The drying method according to claim 7,
in step S2, when the grain falls on the inclined plate, the control arm samples the grain at regular time and provides it to the electron microscope for detection, and adjusts the focus knob of the electron microscope to keep the condition of seeing the water molecules in the grain, and the condition of seeing the most amount of grain.
9. The drying method according to claim 7,
the motion speed of the horizontal conveyor belt is calculated in the following way:
V＝(n*a*s)/(A-B)
wherein A represents the number of water molecules in a single grain, B represents the number of water molecules in a single grain of a primary drying product, a represents the reduction speed of the water molecules in unit time on the horizontal conveyor belt, s represents the length of the single horizontal conveyor belt, and n represents the number of the horizontal conveyor belts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
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| CN115096064A (en) * | 2022-07-07 | 2022-09-23 | 四川砥弘科技有限公司 | Agricultural product drying control method based on mesh belt type dryer |
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Application publication date: 20211207 |