CN107013072B - Silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system - Google Patents
Silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system Download PDFInfo
- Publication number
- CN107013072B CN107013072B CN201710222596.3A CN201710222596A CN107013072B CN 107013072 B CN107013072 B CN 107013072B CN 201710222596 A CN201710222596 A CN 201710222596A CN 107013072 B CN107013072 B CN 107013072B
- Authority
- CN
- China
- Prior art keywords
- silo
- air duct
- ventilation
- wind
- duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/51—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for storing agricultural or horticultural products
Abstract
The silos such as novel silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system, belong to provisions room force ventilation field.The present invention in order to solve the problems, such as existing tubular silo force ventilation low efficiency, ventilation time it is long and by wind effect it is poor.The present invention includes tubular warehouse, multi-layer annular air duct bracket is installed on the inner sidewall of tubular warehouse, wind host air duct is installed on annular passage bracket, the cross section in wind host air duct is rectangular wind net branch air duct and wind host air duct in same level, wind net branch air duct is established with wind host air duct along the center of circle direction in wind host air duct and is connected to, ventilation shaft is arranged on the inner wall of tubular warehouse, ventilation shaft is connected to multilayer wind host air duct, the upper end of ventilation shaft is respectively arranged with ventilation opening and circulation mouth, and two-way flow-mixing blower fan is provided on ventilation shaft.The present invention has very strong control ability to cereal temperature and moisture by improving ventilating system.
Description
Technical field
The present invention relates to a kind of ventilations, circulation pattern silo, belong to provisions room force ventilation field.
Background technique
Silo, vertical silo, brick dumpy silo, steel silo etc. (hereinafter referred to as silo) are that current world food industry is commonly used
Storehouse type, there is mechanization, high degree of automation, Bulk Grain can completely or partially flow automatically export, be usually used in major port, grain adds
Factory, logistic industry, as grain reserves storehouse type also very big application, it is small to be mainly characterized by occupied area, for soil fund ratio
More rare area has very big advantage.But as the storehouse type of grain reserves, the weakness that the silos such as silo also have its fatal,
It is exactly that grain layer is especially high, meter there is the silo of different height from 20 meters to 50.Grain layer is especially high, and the efficiency of force ventilation is very
Low, ventilation time is especially long, and the specific energy consumption of cooling is 1 times of horizontal warehouse or more, and a large amount of power consumption is wasted, Er Qieji
Originally there is no precipitation function, even the centrifugal fan of most strength cools down, also can only lower three meters of grain face and three meters of bottom have drop
The possibility of water, and the moisture at other positions does not have any change.Silo is also big to aerial stretching surface due to height, is subject to too
Positive width penetrates that heat is also strong, and up to 10 meters or so, southern area of China can be deeper for the dangerous difference on upper layer, is easy to send out after grain is heated
Heat, and basic reason is that moisture is higher, silo cooling is all relatively difficult, and precipitation is just more difficult, and leading to silo is to be most difficult to take care of
The storehouse type of grain, once and grain there is deep layer fever phenomenon, be no any method processing at all, be all finally take grain out of a granary to sun it for
Final final result brings huge loss to enterprise and society.
Summary of the invention
The purpose of the present invention is to solve existing tubular silo force ventilation low efficiency, ventilation time is long and is imitated by wind
The problem of fruit difference, and then silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integration system are provided
System.
Technical solution of the present invention:
Silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system include tubular warehouse, annular wind
Road bracket, wind host air duct, wind net branch air duct, ventilation shaft and two-way flow-mixing blower fan, the tubular warehouse top are equipped with storehouse
Grain lid, the lower part of tubular warehouse, which is provided with, puts grain mouth, and multi-layer annular air duct branch is equipped on the inner sidewall of the tubular warehouse
Frame is equipped with wind host air duct on the annular passage bracket, and wind host air duct is arranged along the inner wall of tubular warehouse, wind net
The cross section of main air duct is rectangular, described wind net branch air duct and wind host air duct in same level, wind net branch air duct edge
The center of circle direction in wind host air duct is established with wind host air duct and is connected to, and the ventilation shaft is arranged in the inner wall of tubular warehouse
On, ventilation shaft is connected to multilayer wind host air duct, and the upper end of ventilation shaft is respectively arranged with ventilation opening and circulation mouth, ventilation opening
It is in communication with the outside across tubular warehouse arrangement, circulation mouth is arranged in the top layer of grain heap inside tubular warehouse, also sets on ventilation shaft
It is equipped with two-way flow-mixing blower fan.
Preferred: the wind host air duct includes outer layer ventilation duct and the internal layer being arranged in inside outer layer ventilation duct circulation
Pipe, internal layer runner pipe are connect by bracket with outer layer ventilation duct, and the wind net branch air duct passes through outer layer ventilation duct and inner laminar flow
Siphunculus connection.
It is preferred: to be arranged at intervals with ventilation hole on the outer layer ventilation duct.
Preferred: the longitudinally positioned Grain Ventilation along wind net branch air duct side wall is open.
Preferred: all corresponding connection in the multilayer wind host air duct installed on the inner sidewall of the tubular warehouse is equipped with double
To flow-mixing blower fan.
The invention has the following advantages: silo of the invention, vertical silo, brick dumpy silo, steel silo layering ventilation, ring
Flow integrated system carries out layering ventilation, circulation to silo, and the ventilation of deep grain layer is decomposed into several ventilating layers, is sufficiently used for reference flat
Silo overall region is included in the range (and cooling range) of ventilation precipitation, it is logical thoroughly to solve silo by the ventilation advantage in room storehouse
The problem of wind.The present invention has very strong control ability to cereal temperature and moisture by improving ventilating system.
Detailed description of the invention
Fig. 1 is the structure sectional view of silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system；
Fig. 2 is the sectional view in wind host air duct；
Fig. 3 is the outline drawing in wind host air duct；
Fig. 4 and Fig. 5 is the draft circulation schematic diagram of specific embodiment three；
Fig. 6 and Fig. 7 is the draft circulation schematic diagram of specific embodiment four；
Fig. 8 and Fig. 9 is the draft circulation schematic diagram of specific embodiment five；
Figure 10 is the draft circulation schematic diagram of specific embodiment six；
1- tubular warehouse in figure, 2- annular passage bracket, 3- wind host air duct, 4- wind net branch air duct, 5- ventilation shaft, 6-
Two-way flow-mixing blower fan, 7- ventilation opening, 8- circulation mouth, 31- outer layer ventilation duct, 32- internal layer runner pipe, 33- bracket, 311- ventilation
Hole, 41- Grain Ventilation opening.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, silo, vertical silo, the brick of present embodiment in conjunction with Fig. 1-Fig. 3
Circle storehouse, steel silo layering ventilation, circulation integral system include tubular warehouse 1, annular passage bracket 2, wind host air duct 3, wind
Net branch air duct 4, ventilation shaft 5 and two-way flow-mixing blower fan 6,1 top of tubular warehouse are equipped with Cang Lianggai, tubular warehouse 1
Lower part, which is provided with, puts grain mouth, and multi-layer annular air duct bracket 2, the annular are equipped on the inner sidewall of the tubular warehouse 1
Wind host air duct 3 is installed, wind host air duct 3 is arranged along the inner wall of tubular warehouse 1, wind host air duct 3 on air duct bracket 2
Cross section is rectangular, described wind net branch air duct 4 and wind host air duct 3 in same level, and wind net branch air duct 4 is along wind host
The center of circle direction in air duct 3 is established with wind host air duct 3 and is connected to, and the ventilation shaft 5 is arranged on the inner wall of tubular warehouse 1,
Ventilation shaft 5 is connected to multilayer wind host air duct 3, and the upper end of ventilation shaft 5 is respectively arranged with ventilation opening 7 and circulation mouth 8, ventilation
Mouth 7 passes through the arrangement of tubular warehouse 1 and is in communication with the outside, and circulation mouth 8 is arranged in the top layer of 1 inside grain heap of tubular warehouse, ventilation shaft 5
On be additionally provided with two-way flow-mixing blower fan 6；The longitudinally positioned Grain Ventilation opening 41 along 4 side wall of wind net branch air duct；Institute
The all corresponding connection in the multilayer wind host air duct 3 installed on the inner sidewall for the tubular warehouse 1 stated is equipped with two-way flow-mixing blower fan 6.Such as
This setting opens ventilation opening 7 when needing to be aerated in silo, and under the action of two-way flow-mixing blower fan 6, air-flow is from wind net
Circulation in main air duct 3, wind net branch air duct 4 and ventilation shaft 5, and then realize the effect of ventilation circulation, the multilayer of this mode is logical
Wind facilitates ventilation operation, while can be completed accordingly by the wind host air duct 3 and two-way flow-mixing blower fan 6 of control adjacent two layers
The ventilation of grain storage area, this efficiently draft type makes grain preservation in silo all good, and user's drafting efficiency obtains
Raising is arrived.
Specific embodiment 2: illustrate present embodiment in conjunction with Fig. 2 and Fig. 3, the silo of present embodiment, vertical silo,
Brick dumpy silo, steel silo layering are divulged information, wind host air duct 3 described in circulation integral system includes that outer layer ventilation duct 31 and setting exist
Internal layer runner pipe 32 inside outer layer ventilation duct 31, internal layer runner pipe 32 is connect by bracket 33 with outer layer ventilation duct 31, described
Wind net branch air duct 4 pass through outer layer ventilation duct 31 be connected to internal layer runner pipe 32；Setting is spaced on the outer layer ventilation duct 31
There is ventilation hole 311.So set, the air-flow being passed in wind host air duct 3 is a part of under the action of two-way flow-mixing blower fan 6
Internal layer runner pipe 32 is entered directly into, another part enters directly into outer layer ventilation duct 31, and by being arranged in outer layer ventilation duct
Ventilation hole 311 on 31 side walls, which is drained into grain heap, realizes ventilation, the thimble tube arrangement of this mode, so that air-flow enters envelope
In the internal layer runner pipe 32 closed, and it is flowed into wind net branch air duct 4, enhances the intensity of 4 internal gas flow of wind net branch air duct, Jin Erti
High ventilation effect, compared with single layer outer layer ventilation duct 31, the efficiency of transmission of wind-force is higher, and reduces two-way flow-mixing blower fan
6 power demand, has saved the energy, reduces silo ventilation cost.
Specific embodiment 3: illustrating present embodiment, silo, vertical silo, the brick of present embodiment in conjunction with Fig. 4, Fig. 5
Circle storehouse, steel silo layering ventilation, circulation integral system, in this ventilation mode, circulation mouth 8 is closed, and ventilation opening 7 is opened,
Outside air is entered by ventilation opening 7, is passed through two-way flow-mixing blower fan 6 by wind host air duct 3 and wind net branch air duct 4 and is then passed through grain
Heap, after having carried out damp and hot exchange with grain, by the top of silo exhaust outlet discharge storehouse outside, reach reduce upper layer grain heap humidity and
The effect of moisture；Otherwise outside air by the top of silo exhaust outlet or window enter, pass through grain heap, carried out with grain wet
After heat exchange, by wind host air duct 3 and wind net branch air duct 4, is passing through two-way flow-mixing blower fan 6, is being discharged outside storehouse by ventilation opening 7,
It is equally reached the effect for reducing upper layer grain heap humidity and moisture.
Specific embodiment 4: illustrating present embodiment, silo, vertical silo, the brick of present embodiment in conjunction with Fig. 6, Fig. 7
Circle storehouse, steel silo layering ventilation, circulation integral system, in this ventilation mode, ventilation opening 7 is closed, and circulation mouth 8 is opened,
Grain heap bottom cold air is extracted out by flow-mixing blower fan 6, is projected by circulation mouth 8, is reduced space temperature in silo grain face, is reached reduction
The air-conditioning effect of storehouse temperature, is then passed through grain heap, by wind host air duct 3 and wind net branch air duct 4, forms a complete internal circulation
System, the effect divulged information in this way have samming grain temperature, moisture, reduce the effect of storehouse temperature；Otherwise two-way flow-mixing blower fan 6 will be in grain face
Air inspiration is pressed into wind host air duct 3 and wind net branch air duct 4, the cold air of grain heap bottom is moved up, by the grain on upper layer
High temperature remove outside grain heap, then flow-mixing blower fan is entered by circulation mouth, forms a complete circulation system.
Specific embodiment 5: illustrating present embodiment, silo, vertical silo, the brick of present embodiment in conjunction with Fig. 8, Fig. 9
Circle storehouse, steel silo layering ventilation, circulation integral system, in this mode, circulation mouth 8 is closed, and ventilation opening 7 is opened, and is such as schemed
Shown, the connected centrifugal blower of silo bottom vent or flow-mixing blower fan are forced ventilation, and outside air is by centrifugal blower
After pressurization, grain heap is passed through along silo bottom wind host air duct 3 and wind net branch air duct 4, when reaching middle layer silo wind net, by
Layer wind net branch air duct 4 sucks, and into middle layer wind host air duct 3, after flow-mixing blower fan 6 pressurizes in middle level, storehouse is discharged by ventilation opening 7
Outside, the combined type ventilation for the resultant force effect that the one of two blowers pushes away a drawing is formed, the ventilation mode is only to newly-increased air duct lower part
Grain is cooled down, precipitation is divulged information；Conversely, Fig. 9 mode and Fig. 8 mode gas flow circuitry are exactly the opposite.
Specific embodiment 6: the silo of embodiment is described with reference to Fig.10, present embodiment, vertical silo, brick circle
Storehouse, steel silo layering ventilation, circulation integral system, for silos such as vertical silo, brick dumpy silos, due to diameter do not have silo that
Big, the difficulty of transformation is not just very much, and the length of wind net branch air duct 4 can be very short or even can be cancelled, and structure is also simpler
Knot；If the height of silo or other silos is very high, multilayer ventilating system can establish, just as the ring of nature
Equally carry out segmented ventilation, where it is problematic any section led to, avoid the wasteness of whole storehouse ventilation；In high-rise silo, stand
In the ventilation of silo multilayer, circulation integral system, processing, this ventilation process can be aerated to any grain storage section as needed
Mode is flexibly ingenious, improves drafting efficiency, reduces the cumbersome process of ventilation, has saved ventilation cost, and reaches precipitation, drop
The control effect of temperature.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (4)
1. silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system, including tubular warehouse (1), annular
Air duct bracket (2), wind host air duct (3), wind net branch air duct (4), ventilation shaft (5) and two-way flow-mixing blower fan (6), feature exists
In: tubular warehouse (1) top is equipped with Cang Lianggai, and the lower part of tubular warehouse (1), which is provided with, puts grain mouth, the tubular storehouse
Multi-layer annular air duct bracket (2) is installed on the inner sidewall of body (1), wind host is installed on the annular passage bracket (2)
Air duct (3), wind host air duct (3) arrange that the cross section in wind host air duct (3) is rectangular, institute along the inner wall of tubular warehouse (1)
The wind net branch air duct (4) stated and wind host air duct (3) are in same level, and wind net branch air duct (4) is along wind host air duct (3)
Center of circle direction is established with wind host air duct (3) and is connected to, and the ventilation shaft (5) is arranged on the inner wall of tubular warehouse (1), leads to
Air piping (5) is connected to multilayer wind host air duct (3), and the upper end of ventilation shaft (5) is respectively arranged with ventilation opening (7) and circulation mouth
(8), ventilation opening (7) passes through tubular warehouse (1) arrangement and is in communication with the outside, and circulation mouth (8) is arranged in the internal grain heap of tubular warehouse (1)
Top layer, be additionally provided with two-way flow-mixing blower fan (6) on ventilation shaft (5)；The wind host air duct (3) includes outer layer ventilation duct
(31) and setting is in the internal layer runner pipe (32) of outer layer ventilation duct (31) inside, and internal layer runner pipe (32) passes through bracket (33) and outer
Layer ventilation duct (31) connects, and the wind net branch air duct (4) passes through outer layer ventilation duct (31) and is connected to internal layer runner pipe (32).
2. silo according to claim 1, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system,
It is characterized by: being arranged at intervals with ventilation hole (311) on the outer layer ventilation duct (31).
3. silo according to claim 1, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system,
It is characterized by: the longitudinally positioned Grain Ventilation along wind net branch air duct (4) side wall is open (41).
4. silo according to claim 1, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system,
It is characterized by: all corresponding connection in the multilayer wind host air duct (3) installed on the inner sidewall of the tubular warehouse (1) is equipped with
Two-way flow-mixing blower fan (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222596.3A CN107013072B (en) | 2017-04-06 | 2017-04-06 | Silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710222596.3A CN107013072B (en) | 2017-04-06 | 2017-04-06 | Silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107013072A CN107013072A (en) | 2017-08-04 |
| CN107013072B true CN107013072B (en) | 2019-01-25 |
Family
ID=59445599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710222596.3A Active CN107013072B (en) | 2017-04-06 | 2017-04-06 | Silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107013072B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643665A (en) * | 2018-07-04 | 2018-10-12 | 肖昭然 | A kind of energy silo and major diameter silo system |
| CN109005952B (en) * | 2018-07-19 | 2021-06-11 | 黑龙江强一粮安装饰工程有限公司 | Circulating ventilation device and ventilation method for granary |
| CN110259201A (en) * | 2019-07-17 | 2019-09-20 | 黑龙江大千环保科技有限公司 | A kind of small-sized sanctuary of high-strength multifunctional |
| CN110725596A (en) * | 2019-10-22 | 2020-01-24 | 北京粮猫科技有限公司 | Full cast-in-place self-ventilation double-layer roof grain storage bin structure and construction method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3523863A1 (en) * | 1985-07-04 | 1987-01-15 | Fritzen Gmbh & Co H & W | Silo for a ventilation drying of cereals |
| CN2379550Y (en) * | 1999-07-30 | 2000-05-24 | 扬玉江 | Air flow circulation type granary |
| CN202050725U (en) * | 2011-04-21 | 2011-11-30 | 丁林胜 | Small-sized natural drying granary for storing corn |
| CN103224100B (en) * | 2013-05-03 | 2014-08-27 | 南京航空航天大学 | Truncated cone-shaped steel-cable-bamboo combined grain silo |
| CN203251672U (en) * | 2013-05-14 | 2013-10-30 | 杨益荣 | Grain drying and storage granary |
| CN204983856U (en) * | 2015-07-28 | 2016-01-20 | 自贡天祥机械有限公司 | Little granary of various steel sheet of grain is stored up to peasant household's science |
| CN205093211U (en) * | 2015-11-18 | 2016-03-23 | 史钢强 | Novel shallow round storehouse floor ventilates, circulation integration system |
-
2017
- 2017-04-06 CN CN201710222596.3A patent/CN107013072B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107013072A (en) | 2017-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107013072B (en) | Silo, vertical silo, brick dumpy silo, steel silo layering ventilation, circulation integral system | |
| CN105432262B (en) | Natural low-temperature barn and grain storage method thereof | |
| CN209558832U (en) | A kind of drying device dry for pannage | |
| CN106134656A (en) | A kind of silo machine aeration ventilates and mends device for cooling | |
| CN207940038U (en) | Major diameter vertical silo aeration cooling system | |
| CN207836235U (en) | A kind of grain storage traverse cycle ventilating system | |
| CN108184450A (en) | Major diameter vertical silo aeration cooling system and method | |
| CN206101271U (en) | Secret chicken coop of airing exhaust of buffering formula | |
| CN102523847A (en) | Supporting facility of technology of grain storage under circulation balanced temperature and humidity in bungaloid granary | |
| CN107246764A (en) | A kind of hydrofuge does not influence the flow translation type drying room of airflow circulating | |
| CN207400020U (en) | A kind of novel air processing system for agricultural greenhouse greenhouse | |
| CN104807314B (en) | The waste-heat recovery device and method of a kind of box air direction reversals drying machine | |
| CN207179872U (en) | The indirect Cooling System of roofing airduct | |
| CN208143891U (en) | A kind of grain heap periphery standpipe ventilating system | |
| CN206572866U (en) | A kind of multifunction automatic drying plant | |
| CN202354123U (en) | Supporting facility of circulation humidity and temperature balancing grain storing technology in bungalow barn | |
| CN205939972U (en) | Two -way air supply heat pump drying system | |
| CN208480541U (en) | A kind of foodstuff drying device | |
| CN205957678U (en) | Energy -conserving drying equipment of high -efficient dehumidification | |
| CN206042877U (en) | Device for cooling is mended in a kind of silo machine aeration ventilation | |
| CN207407603U (en) | A kind of closed multigroup continuous drying unit | |
| CN106069802A (en) | A kind of pig house environmental control system in winter | |
| CN206593381U (en) | A kind of polyester slice dry component | |
| CN206808131U (en) | A kind of Novel mushroom house structure | |
| CN110274444A (en) | Heated-air circulation oven |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |