CN109699317A - Silo radial ventilation system and method for ventilation - Google Patents
Silo radial ventilation system and method for ventilation Download PDFInfo
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- CN109699317A CN109699317A CN201910158876.1A CN201910158876A CN109699317A CN 109699317 A CN109699317 A CN 109699317A CN 201910158876 A CN201910158876 A CN 201910158876A CN 109699317 A CN109699317 A CN 109699317A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 14
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims description 18
- 230000008676 import Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 235000013339 cereals Nutrition 0.000 description 62
- 238000003860 storage Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000005399 mechanical ventilation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000003958 fumigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
Abstract
The present invention relates to silo radial ventilation system and method for ventilation, technical solution is, it is provided in silo bottom sidewall along its cyclic annular main air duct circumferentially, multiple vertical branch air ducts are provided on silo inner wall, cyclic annular main air duct is connected with vertical branch air duct, silo is provided centrally with the center duct set stretched out straight up, the upper end of center duct set is higher than the maximum Filling high of silo, the inside and outside ventilation hole penetrated through is all evenly equipped on vertical branch air duct and center duct set, the air guide hole being connected with cyclic annular main air duct inner cavity is at least provided on the side wall of silo, the present invention is without being transformed this body structure of silo, directly add center duct set, cyclic annular main air duct and vertical branch air duct, to entire grain heap uniform ventilation, it is big to solve silo diameter, outlet air surface caused by height is high is small, ventilation resistance value is larger and drops The problem of temp effect difference, not needing overlay film can be completed ventilation, and whole temperature fall time is short, lowering temperature uniform.
Description
Technical field
The present invention relates to silo aeration technology field, especially a kind of silo radial ventilation system and method for ventilation.
Background technique
Mechanical ventilation in grain storage is application of the complicated engineering technology in foodstuff preservation, is a Xiang Chong of current foodstuff preservation
Want technology, implement the stability for not only increasing grain storage, at the same inventory carrying cost it is lower, it is easy to operate, be easily mastered, for safety
The good fundamentals of management has been established in grain storage.Since being built state-owned grain depot in 1998, Ventilation In Grain Storage technology has become
The indispensable technology of newly constructed depot.The mechanical ventilation in grain storage system applied at present is mainly by blower, air feed conduit, ventilating duct, grain heap
And the composition such as fan operation control equipment, major function is the pressure (positive pressure or negative pressure) generated using blower, will be extraneous low
Warm, low humidity air send input grain heap, promotes gas inside and outside grain heap to carry out damp and hot exchange, reduces the temperature and moisture of grain heap.It removes
Other than above-mentioned function, system also has balance grain heap temperature, humidity, prevents or eliminate water transport, layering and moisture condensation；Prevention
High-moisture grain fever；It excludes peculiar smell in grain heap or implements the air-dispersing after fumigating；Space accumulated heat in storehouse is excluded in high temperature season.Matching
For in the new storehouse of " four-in-one " technology, mechanical ventilation in grain storage is also used to recirculation fumigation desinsection and using the cooling grain of grain cooling machine
Food.
Being normally applied for silo mechanical ventilation in grain storage system is to utilize ventilation blower when ambient temperature is lower than cereal temperature
Be when ambient temperature is lower than cereal temperature, Cryogenic air is pressed into from the ventilating duct on horizontally disposed ground using ventilation blower or
Grain heap is sucked, air-flow is vertical or turns the heat of grain or moisture using heat exchange using heat exchange vertically through grain heap
It moves on in air, high temperature air is discharged from grain face or bottom, is discharged in atmosphere by the ventilation opening in silo roof or orlop, reaches drop
The purpose of low cereal temperature.The draft type of silo at present, the draft type of flow are vertically oriented.
For the ease of grain export, silo mostly uses greatly gallery ventilation system at present, and ground slot form has radiation, ring
Several forms such as shape, comb shape, rich shape, F shape air duct.
Since 1998 in the design of new storehouse construction, arrange that two groups there are four branch air ducts to constitute on terrace in silo storehouse
Radiation or comb shape air duct.The cover board in geosyncline air duct is frame structure, and segmentation manufacture, every segment length 1m, frame is by channel steel and flat
Steel is made, and spreads sieve tray above, and the percent opening of sieve tray is 30%.The top of silo is equipped with natural ventilation port and axial flow blower
Ventilation opening.The air inlet of air outlet and drop storehouse temperature ventilation when natural ventilation port is grain heap force ventilation, axial flow blower hole is row
Except the air outlet of the top of the warehouse accumulated heat.In use, since grain heap diameter is big, height is high, silo ventilating system exists
Wind face is less than normal, and ventilation resistance value is larger, and cooling effect is poor, and the gradation of moisture is big, there are dead corner, ventilation opening quantity it is more, more
Blower shares ventilation effect and has no the deficiencies of significantly improving place, and therefore, it is imperative to improve and innovate.
Summary of the invention
For above situation, for the defect for overcoming the prior art, it is radial that the purpose of the present invention is just to provide a kind of silo
Ventilating system and method for ventilation, can effectively solve the problems, such as silo uniformly, high-efficient ventilation.
The technical solution that the present invention solves is:
A kind of silo radial ventilation system, including silo are provided with along it circumferentially in silo bottom sidewall
Cyclic annular main air duct, be provided with multiple vertical branch air ducts on silo inner wall, cyclic annular main air duct is connected with vertical branch air duct, shallowly
Circle storehouse is provided centrally with the center duct set stretched out straight up, and the maximum loading that the upper end of center duct set is higher than silo is high
It spends, the inside and outside ventilation hole penetrated through is all evenly equipped on vertical branch air duct and center duct set, the silo roof of silo is ventilating structure, i.e.,
It is provided with the inside and outside air hole or transom penetrated through in the silo roof of silo, is at least provided with one and ring-type on the side wall of silo
The air guide hole that main air duct inner cavity is connected.
The height of the vertical branch air duct is h (relative to ground, i.e., the relative altitude of vertical branch air duct top surface to ground),
Silo maximum Filling high is H (relative to ground), and the internal diameter of silo is D, then [(H-D/2)+5] (m) >=h >=[(H-D/
2)-5](m)。
A kind of silo lateral ventilation method, is packed into silo inner cavity for grain, and air guide hole is passed through piping connection blower
Air outlet, open blower, the positive pressure that ventilation blower generates is cyclic annular main by the indentation of the side wall of silo by the Cryogenic air outside storehouse
Air duct, then the Cryogenic air in cyclic annular main air duct is pressed into vertical branch air duct, is carried out by the ventilation hole on vertical branch air duct
Shunt: the Cryogenic air that lower position distributes is pressed into center duct set, is aerated cooling to the grain of lower part；High bit
It sets the Cryogenic air distributed and center duct set is flowed out and imported from grain heap top surface, cooling is aerated to the grain on top；It is low
Warm air is discharged at the top of the duct set of center with heat, is finally discharged from the silo roof of silo.
A kind of silo lateral ventilation method, is packed into silo inner cavity for grain, and air guide hole is passed through piping connection exhausting
The air inlet of machine, opens exhaust fan, and the Cryogenic air of silo roof is pressed into grain heap by center duct set by the wind pressure that exhaust fan generates
And shunted, part Cryogenic air stretches out the ventilation hole outflow of grain face part from center duct set, then is pressed into from grain face vertical
The ventilation hole of allotment air duct higher position is shunted, and is finally flowed out through cyclic annular main air duct by the air outlet of exhaust fan, to top
Grain be aerated cooling；The ventilation hole of another part Cryogenic air part below grain face flows out, from vertical after grain heap
The ventilation hole in allotment air duct is shunted, and is finally flowed out through cyclic annular main air duct by the air outlet of exhaust fan, to middle part and lower part
Grain be aerated cooling.
The problem of structure of the invention novel and unique, advantages of simple, very good solution silo ventilation, it is not necessary that silo is transformed
This body structure directly adds center duct set, cyclic annular main air duct and vertical branch air duct, to entire grain heap uniform ventilation, solution
Outlet air surface caused by silo diameter of having determined is big, height is high is small, ventilation resistance is worth larger and poor cooling effect problem, is not present
Dead corner, ventilation effect is with the obvious advantage, and not needing overlay film can be completed ventilation, and whole temperature fall time is short, lowering temperature uniform, uses
Convenient, effect is good, is the innovation on silo ventilating system and method for ventilation, there is good social and economic benefit.
Detailed description of the invention
Fig. 1 is the sectional front view (flow direction of arrow direction expression wind) of silo of the present invention.
Fig. 2 is the cross sectional plan view (flow direction of arrow direction expression wind) of silo of the present invention.
Fig. 3 is the partial enlarged view (ventilation hole schematic diagram) of the vertical branch air duct of the present invention or center duct set.
Specific embodiment
Below in conjunction with attached drawing, specific embodiments of the present invention will be described in further detail.
It is provided by Fig. 1-3, the present invention includes silo, is provided in silo bottom sidewall along its ring-type circumferentially
Main air duct 2 is provided with multiple vertical branch air ducts 3 on silo inner wall, and cyclic annular main air duct 2 is connected with vertical branch air duct 3, shallowly
Circle storehouse is provided centrally with the center duct set 6 stretched out straight up, and the upper end of center duct set 6 is higher than the maximum loading of silo
Highly, it is all evenly equipped with the inside and outside ventilation hole 8 penetrated through on vertical branch air duct 3 and center duct set 6, the silo roof 7 of silo is ventilative
Structure is provided with the inside and outside air hole or transom penetrated through, is at least provided with one on the side wall 1 of silo in the silo roof of silo
A air guide hole 4 being connected with cyclic annular 2 inner cavity of main air duct.
To guarantee using effect, the diameter of the center duct set 6 is D, and the height of vertical branch air duct 3 is h (relative to ground
Face), the internal diameter of silo is D, then [(H-D/2)+5] (m) >=h >=[(H-D/2) -5] (m)；The diameter of the center duct set 6
For d, then d=1-1.5m.
The center collection of ventilation hole covering silo maximum Filling high above and below part on the center duct set
Air hose, and the aperture of ventilation hole is less than grain grain.
Ventilation hole and center duct set face on the vertical branch air duct 3 are arranged, and the aperture of ventilation hole is less than grain grain.
Blower 5 is housed on the air guide hole 4.
The cyclic annular main air duct 2 is mounted on the inner wall of silo bottom, and vertical branch air duct 3 is in stretching shape connection upwards
On cyclic annular main air duct 2.
Cyclic annular main air duct 2 can also be provided on the outer wall of silo, set between vertical branch air duct 3 and cyclic annular main air duct 2
Set the auxiliary air duct of both connections.
Grain is packed into silo as shown in Figure 1, 2 by a kind of method of ventilation based on the silo radial ventilation system
Blower is opened by air guide hole 4 by the air outlet of piping connection blower 5 in inner cavity, and the positive pressure that ventilation blower generates is by the low temperature outside storehouse
Air is pressed into cyclic annular main air duct 2 by the side wall of silo, and then the Cryogenic air in cyclic annular main air duct 2 is pressed into vertical branch wind
Road 3 is shunted by the ventilation hole on vertical branch air duct 3: the Cryogenic air that lower position distributes is pressed into center collection wind
Pipe 6 is aerated cooling to the grain of lower part；During the Cryogenic air that higher position distributes is flowed out and is imported from 9 top surface of grain heap
Heart duct set 6 is aerated cooling to the grain on top；Cryogenic air is discharged at the top of center duct set 6 with heat, finally
It is discharged from the silo roof of silo.
Grain is packed into silo inner cavity, by wind-guiding by a kind of method of ventilation based on the silo radial ventilation system
Mouth 4 passes through the air inlet of piping connection exhaust fan, opens exhaust fan, and the wind pressure that exhaust fan generates passes through the Cryogenic air of silo roof
Center duct set 6 is pressed into grain heap and is shunted, and part Cryogenic air stretches out the ventilation hole stream of grain face part from center duct set
Out, then from the ventilation hole that grain face is pressed into vertical 3 higher position of branch air duct it is shunted, finally through cyclic annular main air duct by exhaust fan
Air outlet outflow, cooling is aerated to the grain on top；The ventilation hole of another part Cryogenic air part below grain face
Outflow, is shunted after grain heap from the ventilation hole of vertical branch air duct 3, finally through cyclic annular main air duct by the air outlet of exhaust fan
Outflow, is aerated cooling to the grain at middle part and lower part.
The present invention achieves identical or similar as a result, temperature fall time is short, effect is good, is below through practical application
Application examples of the invention:
Application examples one
1, warehouse situation
30 meters of silo diameter, maximum 30 meters of Filling high, grain variety is wheat；11021 tons of quantity, water content
12.5%, impurity content 0.9%, not perfect granularity 5.5%, 20 meters of grain bulk height.
Radial ventilation design: cyclic annular main air duct is arranged in silo inner wall bottom, and 8 vertical branch air ducts (are highly 16
Rice), two air guide holes are arranged in cyclic annular main air duct, and center duct set diameter is 1.0 meters.
2, test method
After air guide hole connects blower, ton-grain ventilation quantity is 5-6m3/ht, and the gas flow temperature of ventilation is 17 DEG C, using indentation
Formula ventilation.
3, test result analysis
The ventilation of table 1 front and back grain Wen Bianhua
Application examples two
1, warehouse situation
25 meters of silo diameter, 27.15 meters of Filling high.Grain variety soybean, 10139.4 tons of quantity, water content
11.3%, impurity content 1.5% improves granularity 80.5%, and 26.96 meters of grain bulk height.
Radial ventilation design: cyclic annular main air duct is arranged in silo inner wall bottom, and 8 vertical branch air ducts (are highly 15
Rice), three air guide holes are arranged in cyclic annular main air duct, and center duct set diameter is 1.2 meters.
2, test method
After air guide hole connects blower, ton-grain ventilation quantity is 5-6m3/ ht, the gas flow temperature of ventilation is 17.5 DEG C, using pressure
Enter formula ventilation.
3, test result analysis
By above situation it should be apparent that can reach apparent cooling effect, each layer grain temperature by cooling in 14 days
Highly uniform, using effect is good, is the innovation on silo ventilating system and method for ventilation, there is good society and economic effect
Benefit.
Finally, applicant is it is noted that a kind of above-mentioned only embodiment pointed out of this application, is not used to limit
The protection scope of the application processed, it is all made with equivalent or equivalent substitute means it is of the same nature with technical scheme
Technical solution belongs to the protection scope of the application.
Claims (9)
1. a kind of silo radial ventilation system, including silo, which is characterized in that be provided in silo bottom sidewall along it
Cyclic annular main air duct (2) circumferentially, is provided with multiple vertical branch air ducts (3) on silo inner wall, cyclic annular main air duct (2) and hangs down
Allotment air duct (3) is connected, and silo is provided centrally with the center duct set (6) stretched out straight up, center duct set (6)
Upper end is higher than the maximum Filling high of silo, and inside and outside perforation is all evenly equipped on vertical branch air duct (3) and center duct set (6)
Ventilation hole (8), the silo roof (7) of silo be ventilating structure silo side wall (1) on be at least provided with one and cyclic annular main air duct
(2) air guide hole (4) that inner cavity is connected.
2. silo radial ventilation system according to claim 1, which is characterized in that the height of the vertical branch air duct (3)
Degree is h, and silo maximum Filling high is H, and the internal diameter of silo is D, then [(H-D/2)+5] (m) >=h >=[(H-D/2) -5]
(m)。
3. silo radial ventilation system according to claim 1, which is characterized in that the center duct set (6) it is straight
Diameter is d, then d=1-1.5m.
4. silo radial ventilation system according to claim 1, which is characterized in that the ventilation on the center duct set
Hole covers the center duct set of silo maximum Filling high above and below part, and the aperture of ventilation hole is less than grain grain.
5. silo radial ventilation system according to claim 1, which is characterized in that on the vertical branch air duct (3)
Ventilation hole and center duct set face are arranged, and the aperture of ventilation hole is less than grain grain.
6. silo radial ventilation system according to claim 1, which is characterized in that wind is housed on the air guide hole (4)
Machine (5).
7. silo radial ventilation system according to claim 1, which is characterized in that cyclic annular main air duct (2) peace
On the inner wall of silo bottom, vertical branch air duct (3) is connected on cyclic annular main air duct (2) in stretching shape upwards.
8. a kind of method of ventilation based on silo radial ventilation system described in claim 1, which is characterized in that grain to be packed into
Blower is opened by air guide hole (4) by the air outlet of piping connection blower (5) in silo inner cavity, and the positive pressure that blower generates is by storehouse
Outer Cryogenic air is pressed into cyclic annular main air duct (2) by the side wall of silo, then the Cryogenic air quilt in cyclic annular main air duct (2)
Be pressed into vertical branch air duct (3), shunted by the ventilation hole on vertical branch air duct (3): the low temperature that lower position distributes is empty
Gas is pressed into center duct set (6), is aerated cooling to the grain of lower part；The Cryogenic air that higher position distributes is from grain heap
(9) top surface flows out and imports center duct set (6), is aerated cooling to the grain on top；Cryogenic air with heat therefrom
Discharge at the top of heart duct set (6), is finally discharged from the silo roof of silo.
9. a kind of method of ventilation based on silo radial ventilation system described in claim 1, which is characterized in that grain to be packed into
Air guide hole (4) are passed through the air inlet of piping connection exhaust fan by silo inner cavity, open exhaust fan, the wind pressure that exhaust fan generates
The Cryogenic air of silo roof is pressed by center duct set (6) and grain heap and is shunted, part Cryogenic air is from center duct set
The ventilation hole outflow of grain face part is stretched out, then is shunted from the ventilation hole that grain face is pressed into vertical branch air duct (3) higher position,
It is finally flowed out through cyclic annular main air duct by the air outlet of exhaust fan, cooling is aerated to the grain on top；Another part low temperature is empty
The ventilation hole of gas part below grain face flows out, and is shunted after passing through grain heap from the ventilation hole of vertical branch air duct (3), final to pass through
Cyclic annular main air duct is flowed out by the air outlet of exhaust fan, is aerated cooling to the grain at middle part and lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158876.1A CN109699317A (en) | 2019-03-04 | 2019-03-04 | Silo radial ventilation system and method for ventilation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910158876.1A CN109699317A (en) | 2019-03-04 | 2019-03-04 | Silo radial ventilation system and method for ventilation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109699317A true CN109699317A (en) | 2019-05-03 |
Family
ID=66266149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910158876.1A Pending CN109699317A (en) | 2019-03-04 | 2019-03-04 | Silo radial ventilation system and method for ventilation |
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| Country | Link |
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| CN (1) | CN109699317A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110393092A (en) * | 2019-07-31 | 2019-11-01 | 河南工大设计研究院 | A kind of Multifunctional granary partly maked somebody a mere figurehead for storing Bulk Grain |
| CN110946011A (en) * | 2019-11-26 | 2020-04-03 | 宁波亿地力农业科技发展有限公司 | Mobile agricultural product fresh-keeping warehouse |
| CN111656972A (en) * | 2020-06-17 | 2020-09-15 | 山东省农业机械科学研究院 | Corn ear ventilation drying storage device and method |
| CN115024103A (en) * | 2022-05-06 | 2022-09-09 | 南京财经大学 | Wisdom granary static storage grain temperature grain situation security protection early warning system and early warning device |
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| GB696160A (en) * | 1951-06-14 | 1953-08-26 | Thomas Vind Thomsen | Improvements in or relating to silos |
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| CN110393092A (en) * | 2019-07-31 | 2019-11-01 | 河南工大设计研究院 | A kind of Multifunctional granary partly maked somebody a mere figurehead for storing Bulk Grain |
| CN110946011A (en) * | 2019-11-26 | 2020-04-03 | 宁波亿地力农业科技发展有限公司 | Mobile agricultural product fresh-keeping warehouse |
| CN111656972A (en) * | 2020-06-17 | 2020-09-15 | 山东省农业机械科学研究院 | Corn ear ventilation drying storage device and method |
| CN115024103A (en) * | 2022-05-06 | 2022-09-09 | 南京财经大学 | Wisdom granary static storage grain temperature grain situation security protection early warning system and early warning device |
| CN115024103B (en) * | 2022-05-06 | 2024-03-22 | 南京财经大学 | Intelligent grain bin static storage grain temperature and grain condition security and protection early warning system and early warning device |
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