CN114217650A - Three-dimensional ventilation multiaspect temperature control system is piled to grain - Google Patents
Three-dimensional ventilation multiaspect temperature control system is piled to grain Download PDFInfo
- Publication number
- CN114217650A CN114217650A CN202111524369.9A CN202111524369A CN114217650A CN 114217650 A CN114217650 A CN 114217650A CN 202111524369 A CN202111524369 A CN 202111524369A CN 114217650 A CN114217650 A CN 114217650A
- Authority
- CN
- China
- Prior art keywords
- grain
- side wall
- air
- temperature control
- temperature
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/16—Arrangements in forage silos
- A01F25/22—Ventilating arrangements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Storage Of Harvested Produce (AREA)
Abstract
The invention discloses a three-dimensional ventilation multi-surface temperature control system for grain piles, which comprises a bin body for storing grains, wherein a plurality of side wall ventilation channels are arranged on the side wall of the bin body and are uniformly distributed; a plurality of grain condition sensors for detecting the temperature, humidity and plant diseases and insect pests of grains are arranged in the bin body, and the grain condition sensors, the side wall temperature control device and the multifunctional grain storage machine are all electrically connected with the controller. The invention has the effects of low energy consumption, accurate temperature control and the like, can efficiently solve the problem of local temperature rise of the grain pile, realizes green low-temperature grain storage and avoids chemical fumigation.
Description
Technical Field
The invention relates to the technical field of grain storage, in particular to a three-dimensional ventilation multi-surface temperature control system for a grain pile.
Background
The low-temperature grain storage technology is one of the currently accepted important green grain storage modes, is popularized in China, has great difference to the using effect of the low-temperature grain storage technology, can basically realize a low-temperature or quasi-low-temperature state by adopting a surface layer temperature control and whole-bin temperature reduction mode in seasons with higher temperature for a warehouse with better heat insulation performance, but still has the phenomenon that the local grain temperature is higher near a wall and a gate, and is difficult to carry out low-temperature control on the local grain pile temperature because the continuous heat transfer of a cabin enclosure structure leads to the rapid temperature rise of the grain near the wall for the warehouse with poorer heat insulation effect. At present, no very effective treatment mode exists for cooling side wall grains, for example, a ground wall-close ventilation channel is added or internal circulation temperature control is adopted, low-temperature air can diffuse towards the center part of a grain pile due to the influence of grain pile resistance, so that the effectiveness of cooling the side wall is poor, more energy needs to be consumed, or heat transmission is reduced by increasing the heat insulation thickness of a wall body, but the external heat can still be transmitted into a bin body due to the fact that complete heat insulation cannot be achieved, the temperature of the wall-close grains can be raised, and the heat insulation cost is too high. Meanwhile, due to the influence of terrestrial heat, grains close to the ground can slowly rise at the bottom of the grain pile, and the whole bin is usually ventilated and cooled by an external refrigerating unit, so that the mode is high in energy consumption, and the equipment is labor-consuming in moving.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a grain pile three-dimensional ventilation multi-surface temperature control system which can solve the problems of side wall heat transfer, ground heat transfer and cooling of the inner part and surface layer space of a grain pile.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
the grain pile three-dimensional ventilation multi-surface temperature control system comprises a bin body for storing grains, wherein a plurality of side wall ventilation channels are arranged on the side wall of the bin body and are uniformly distributed, a side wall main air duct is arranged below the side wall ventilation channels and is communicated with the side wall ventilation channels, the side wall main air duct is connected with a side wall temperature control device, and the side wall temperature control device is communicated with the side wall main air duct; a plurality of grain condition sensors for detecting the temperature, humidity and plant diseases and insect pests of grains are arranged in the bin body, and the grain condition sensors, the side wall temperature control device and the multifunctional grain storage machine are all electrically connected with the controller.
Further, the side wall temperature control device is arranged outside the bin body, the side wall main air duct is arranged at the position, close to the wall, of the bottom in the bin, and the side wall air duct is arranged at the position, below a grain piling line, of the inner wall of the bin body.
Furthermore, a surface layer air returning box is arranged in the bin body, the surface layer air returning box is respectively connected with an air outlet and an air inlet of the multifunctional grain storage machine through an air supply pipe and an air returning pipe, and the surface layer air returning box is arranged above the grain piling line.
Furthermore, a plurality of side wall temperature and humidity sensors are arranged in the side wall ventilation channel and are electrically connected with the controller.
Further, the lateral wall temperature control device comprises a shell, wherein an air supply outlet and an air return outlet are respectively arranged at two ends of the shell, the air supply outlet is communicated with the lateral wall main air duct, and the air return outlet is communicated with the inner surface layer space of the bin through a heat preservation air pipe.
Furthermore, a refrigerator, a fan and an air filter screen are sequentially arranged between the air supply outlet and the air return inlet in the outer shell.
Furthermore, an air supply temperature and humidity sensor is arranged at the air supply opening, an air return temperature and humidity sensor is arranged at the air return opening, and the air supply temperature and humidity sensor and the air return temperature and humidity sensor are electrically connected with the controller.
Further, a surface layer space temperature and humidity sensor is arranged above the grain stacking line of the bin body and is electrically connected with the controller.
Further, the lateral wall ventilation channel comprises a vertically arranged corrugated board, a polyurethane heat-insulating layer is arranged above the corrugated board, the lateral wall main air duct is communicated with one end of the corrugated board, and the other end of the corrugated board is communicated with the upper space of the grain stacking line in the bin body.
Furthermore, the bottom of the bin body is provided with a plurality of ground air ducts which are uniformly distributed and connected with a ground vent of the multifunctional grain storage machine.
The invention has the beneficial effects that: this scheme is through increasing independent ventiduct at the internal lateral wall in storehouse all around, separates the interior wall in the storehouse body and grain heap completely, forms countless ventilation gap, send into the lateral wall ventiduct alone with low temperature air again in, takes away the heat that the wall body spreads into, realizes wall body and grain heap heat-insulating air bed, avoids the wall body to transfer heat and channels into near grain heap, solves the local grain heap temperature rise problem of lateral wall. Meanwhile, the surface layer and the inside of the grain pile are controlled by a low-temperature technology, the grain temperature of each point in the whole warehouse is automatically controlled below 15 ℃ through an intelligent control system, and insect damage, mildew and the like caused by local temperature rise are avoided. The invention has the effects of low energy consumption, accurate temperature control and the like, can efficiently solve the problem of local temperature rise of the grain pile, realizes green low-temperature grain storage and avoids chemical fumigation.
Drawings
Fig. 1 is a structural diagram of a grain pile three-dimensional ventilation multi-surface temperature control system.
FIG. 2 is a schematic diagram of a sidewall temperature control device.
Fig. 3 is a structural view of a side wall ventilation passage.
The device comprises a side wall temperature control device 1, a side wall main air duct 2, a side wall main air duct 3, a side wall temperature and humidity sensor 4, a side wall ventilation channel 5, an air supply pipe 6, an air return pipe 7, a surface layer air return box 8, a multifunctional grain storage machine 9, a ground air duct 10, a surface layer space temperature and humidity sensor 11, a grain condition sensor 12, a controller 13, a corrugated plate 14, a polyurethane heat insulation layer 15, an air supply outlet 16, an air supply temperature and humidity sensor 17, a refrigerator 18, an outer shell 19, a fan 20, an air filter screen 21, a return air temperature and humidity sensor 22 and a return air inlet.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1 to 3, the grain pile three-dimensional ventilation multi-surface temperature control system of the scheme comprises a bin body for storing grains, wherein a plurality of side wall ventilation channels 4 are arranged on the side wall of the bin body, the side wall ventilation channels 4 are uniformly distributed, a side wall main air duct 2 is arranged above the side wall ventilation channels 4, the side wall main air duct 2 is communicated with the side wall ventilation channels 4, the side wall main air duct 2 is connected with a side wall temperature control device 1, and the side wall temperature control device 1 is connected with a multifunctional grain storage machine 8 arranged outside the bin body; a plurality of grain condition sensors 11 used for detecting the temperature, humidity and plant diseases and insect pests of grains are arranged in the bin body, and the grain condition sensors 11, the side wall temperature control device 1 and the multifunctional grain storage machine 8 are all electrically connected with a controller 12.
When this scheme is implemented, lateral wall temperature regulating device 1 sets up outside the storehouse, and lateral wall main air duct 2 sets up the bottom in the storehouse and leans on the wall position, and lateral wall air duct 4 sets up the position below storehouse internal wall grain piling line. (ii) a The bin body is internally provided with a surface layer air returning box 7, the surface layer air returning box 7 is respectively connected with an air outlet and an air inlet of a multifunctional grain storage machine 8 through an air supply pipe 5 and an air return pipe 6, and the surface layer air returning box 7 is arranged above a grain piling line.
A plurality of side wall temperature and humidity sensors 3 are arranged in the side wall ventilation channel 4, and the side wall temperature and humidity sensors 3 are electrically connected with the controller 12; the side wall temperature control device 1 comprises an outer shell 18, wherein an air supply outlet 15 and an air return inlet 22 are respectively arranged at two ends of the outer shell 18, the air supply outlet 15 is communicated with the side wall main air duct 2, and the air return inlet 22 is communicated with the upper space of the grain stacking line in the bin body through a heat preservation air pipe.
A refrigerator 17, a fan 19 and an air filter screen 20 are sequentially arranged between the air supply outlet 15 and the air return inlet 22 in the outer shell 18; an air supply temperature and humidity sensor 16 is arranged at the air supply opening 15, a return air temperature and humidity sensor 21 is arranged at the return air opening 22, and the air supply temperature and humidity sensor 16 and the return air temperature and humidity sensor 21 are electrically connected with the controller 12.
A surface layer space temperature and humidity sensor 10 is arranged above the grain stacking line of the bin body, and the surface layer space temperature and humidity sensor 10 is electrically connected with a controller 12; the side wall ventilation channel 4 comprises a corrugated plate 13 which is vertically arranged, a polyurethane heat-insulating layer 14 is arranged above the corrugated plate 13, the side wall main air channel 2 is communicated with one end of the corrugated plate 13, and the other end of the corrugated plate is communicated with the upper layer space of the grain stacking line in the bin body; the bottom of the bin body is provided with a plurality of ground air ducts 9, the ground air ducts 9 are uniformly distributed, and the ground air ducts 9 are connected with a ground vent of the multifunctional grain storage machine 8.
In the process of storing grains at low temperature, the grain pile is in a low-temperature state, when the temperature is high in summer, the heat outside the bin is transmitted into the surface layer space of the grain pile through the wall body and the bin top structure, so that the temperature of the space is raised, when the temperature and humidity sensor 10 for the surface layer space at the upper end of the bin body detects that the temperature of the surface layer space is higher than the low temperature set value by 15 ℃, the multifunctional grain storage machine 8 is started and selects the surface temperature control function, the hot air in the bin body is cooled by the multifunctional grain storage machine 8 and then is sent to the surface space through the return air box 7 of the bin body inner surface, so that the temperature of the surface space is uniformly reduced, when the temperature and humidity sensor 10 in the surface space detects that the air parameter reaches the set value, the multifunctional grain storage machine 8 operates in a standby mode, when the temperature rises, the automatic start is carried out, and the circulation is used to ensure that the temperature of the surface layer of the grain pile is stably controlled at a low temperature state, so that the heat in the surface layer space is prevented from being transferred into the grain pile, and the temperature of the surface layer grain pile is increased.
In the process of storing grains at low temperature, the temperature of grains close to the side wall is raised due to heat transfer of the wall in high-temperature seasons, and if the grains are not treated, the local grains are too high in temperature, so that insect damage and heating phenomena are caused. When the temperature detected by the side wall temperature and humidity sensor 3 is higher than the set value of 15 ℃, the side wall temperature control device 1 is started, and the low-temperature air processed by the side wall temperature control device 1 is directly sent into the side wall main air duct 2 and is uniformly distributed into the side wall ventilation channel 4, so that the temperature of the side wall is reduced. When the side wall temperature and humidity sensor 3 detects that the air parameter reaches a set value, the side wall temperature control device 1 operates in a standby mode, and is automatically started when the temperature rises, so that the side wall temperature control is stabilized in a low-temperature state through circulation, external heat is prevented from being transmitted into the grain pile, and the temperature of the side wall grain pile is increased.
Under the influence of terrestrial heat, the temperature of grains close to the ground can rise slowly, and the grains generate heat by self respiration, so that the inner grain stack can rise slowly, when the grain condition sensor 11 in the bin body detects that the temperature of the grains is higher than a set value by 15 ℃, the multifunctional grain storage machine 8 is started and selects the whole bin cooling function, hot air in the bin body is cooled by the multifunctional grain storage machine 8 and then is sent into the ground air duct 9 at the bottom of the grain stack through the ground air duct 9 of the bin body, so that low-temperature air is uniformly sent into the grain stack, the temperature of the grain stack is reduced, when the temperature of the grain stack detected by the grain condition sensor 11 in the bin body reaches the set value, the multifunctional grain storage machine 8 enters standby operation, and is automatically started when the temperature rises, so that the temperature of each point in the grain stack is stabilized below 15 ℃ to realize low-temperature grain storage.
This scheme is through increasing independent ventiduct at the internal lateral wall in storehouse all around, separates the interior wall in the storehouse body and grain heap completely, forms countless ventilation gap, send into the lateral wall ventiduct alone with low temperature air again in, takes away the heat that the wall body spreads into, realizes wall body and grain heap heat-insulating air bed, avoids the wall body to transfer heat and channels into near grain heap, solves the local grain heap temperature rise problem of lateral wall. Meanwhile, the surface layer and the inside of the grain pile are controlled by a low-temperature technology, the grain temperature of each point in the whole warehouse is automatically controlled below 15 ℃ through an intelligent control system, and insect damage, mildew and the like caused by local temperature rise are avoided. The invention has the effects of low energy consumption, accurate temperature control and the like, can efficiently solve the problem of local temperature rise of the grain pile, realizes green low-temperature grain storage and avoids chemical fumigation.
Claims (10)
1. The grain pile three-dimensional ventilation multi-surface temperature control system is characterized by comprising a bin body for storing grains, wherein a plurality of side wall ventilation channels are arranged on the side wall of the bin body, the side wall ventilation channels are uniformly distributed, a side wall main air duct is arranged below the side wall ventilation channels, the side wall main air duct is communicated with a side wall temperature control device, and the side wall temperature control device is communicated with the upper space of a grain pile line in the bin body; the bin body is internally provided with a plurality of grain condition sensors for detecting the temperature, humidity and plant diseases and insect pests of grains, and the grain condition sensors, the side wall temperature control device and the multifunctional grain storage machine are all electrically connected with the controller.
2. The three-dimensional ventilation multi-surface temperature control system for the grain pile according to claim 1, wherein the side wall temperature control device is arranged outside the bin body, the side wall main air duct is arranged at the position close to the wall at the bottom in the bin, and the side wall air duct is arranged at the position below the grain piling line on the inner wall of the bin body.
3. The grain pile three-dimensional ventilation multi-surface temperature control system according to claim 1, wherein a surface layer return air box is arranged in the bin body, the surface layer return air box is respectively connected with an air outlet and an air inlet of the multifunctional grain storage machine through an air supply pipe and an air return pipe, and the surface layer return air box is arranged above a grain piling line.
4. The grain pile three-dimensional ventilation multi-surface temperature control system according to claim 1, wherein a plurality of side wall temperature and humidity sensors are arranged in the side wall ventilation channel, and the side wall temperature and humidity sensors are electrically connected with the controller.
5. The grain stack three-dimensional ventilation multi-surface temperature control system according to claim 1, wherein the side wall temperature control device comprises an outer shell, an air supply opening and an air return opening are respectively arranged at two ends of the outer shell, the air supply opening is communicated with the side wall main air duct, and the air return opening is arranged above a grain stacking line.
6. The grain pile three-dimensional ventilation multi-surface temperature control system according to claim 5, wherein a refrigerator, a fan and an air filter screen are sequentially arranged between an air supply outlet and an air return inlet in the outer shell.
7. The grain pile three-dimensional ventilation multi-surface temperature control system according to claim 7, wherein an air supply temperature and humidity sensor is arranged at the air supply opening, an air return temperature and humidity sensor is arranged at the air return opening, and the air supply temperature and humidity sensor and the air return temperature and humidity sensor are both electrically connected with a controller.
8. The grain pile three-dimensional ventilation multi-surface temperature control system according to claim 1, wherein a surface layer space temperature and humidity sensor is arranged above the grain piling line of the bin body, and the surface layer space temperature and humidity sensor is electrically connected with the controller.
9. The three-dimensional ventilation multi-surface temperature control system for the grain pile according to claim 1, wherein the side wall ventilation channel comprises a corrugated plate which is vertically arranged, a polyurethane heat insulation layer is arranged above the corrugated plate, the side wall main air duct is communicated with one end of the corrugated plate, and the other end of the corrugated plate is communicated with the upper space of the grain piling line in the bin body.
10. The grain stack three-dimensional ventilation multi-surface temperature control system according to claim 1, wherein a plurality of ground air ducts are arranged at the bottom of the bin body, the ground air ducts are uniformly distributed, and the ground air ducts are connected with a ground ventilation opening of the multifunctional grain storage machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111524369.9A CN114217650A (en) | 2021-12-14 | 2021-12-14 | Three-dimensional ventilation multiaspect temperature control system is piled to grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111524369.9A CN114217650A (en) | 2021-12-14 | 2021-12-14 | Three-dimensional ventilation multiaspect temperature control system is piled to grain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114217650A true CN114217650A (en) | 2022-03-22 |
Family
ID=80701770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111524369.9A Pending CN114217650A (en) | 2021-12-14 | 2021-12-14 | Three-dimensional ventilation multiaspect temperature control system is piled to grain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114217650A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115250766A (en) * | 2022-08-25 | 2022-11-01 | 中央储备粮海口直属库有限公司 | Local-closed multifunctional grain depot cage interior ventilation trolley and method based on ground cage |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569263A (en) * | 2009-06-01 | 2009-11-04 | 国家粮食局科学研究院 | Granary lateral ventilation method and system thereof |
| CN204409001U (en) * | 2015-01-07 | 2015-06-24 | 杭州富义仓米业有限公司 | Vertical silo |
| CN106227178A (en) * | 2016-09-18 | 2016-12-14 | 济南金钟电子衡器股份有限公司 | A kind of multiparameter grain feelings control system and intelligent aeration method |
| CN107246715A (en) * | 2017-06-06 | 2017-10-13 | 湖北叶威(集团)智能科技有限公司 | Interior circulation low-temperature grain-storage system and method |
| CN210247597U (en) * | 2019-06-24 | 2020-04-07 | 东莞市新泰粮食有限公司 | Granary ventilation structure of rice storage |
| CN111512798A (en) * | 2020-04-20 | 2020-08-11 | 湖州市储备粮管理有限公司 | Granary with outside-bin refrigeration and temperature control functions and temperature control method |
| CN212306197U (en) * | 2020-04-20 | 2021-01-08 | 湖州市储备粮管理有限公司 | Granary with refrigeration and temperature control outside granary |
-
2021
- 2021-12-14 CN CN202111524369.9A patent/CN114217650A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101569263A (en) * | 2009-06-01 | 2009-11-04 | 国家粮食局科学研究院 | Granary lateral ventilation method and system thereof |
| CN204409001U (en) * | 2015-01-07 | 2015-06-24 | 杭州富义仓米业有限公司 | Vertical silo |
| CN106227178A (en) * | 2016-09-18 | 2016-12-14 | 济南金钟电子衡器股份有限公司 | A kind of multiparameter grain feelings control system and intelligent aeration method |
| CN107246715A (en) * | 2017-06-06 | 2017-10-13 | 湖北叶威(集团)智能科技有限公司 | Interior circulation low-temperature grain-storage system and method |
| CN210247597U (en) * | 2019-06-24 | 2020-04-07 | 东莞市新泰粮食有限公司 | Granary ventilation structure of rice storage |
| CN111512798A (en) * | 2020-04-20 | 2020-08-11 | 湖州市储备粮管理有限公司 | Granary with outside-bin refrigeration and temperature control functions and temperature control method |
| CN212306197U (en) * | 2020-04-20 | 2021-01-08 | 湖州市储备粮管理有限公司 | Granary with refrigeration and temperature control outside granary |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115250766A (en) * | 2022-08-25 | 2022-11-01 | 中央储备粮海口直属库有限公司 | Local-closed multifunctional grain depot cage interior ventilation trolley and method based on ground cage |
| CN115250766B (en) * | 2022-08-25 | 2023-10-24 | 中央储备粮海口直属库有限公司 | Local closed multifunctional grain depot cage inner ventilation trolley and method based on ground cage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6781527B2 (en) | An integrated warehouse for grain dry storage and tempering with a built-in wind box and an external isolation layer | |
| CN101300922B (en) | Method for storing grains in storehouse with controlled temperature and device thereof | |
| US20100273412A1 (en) | Ventilation System for a Perishable Goods Store | |
| CN111758773B (en) | House type grain storage method | |
| CN104813816B (en) | A kind of insulated ventilation low-temperature grain-storage storehouse, Multilayer partition and temperature control method | |
| CN114217650A (en) | Three-dimensional ventilation multiaspect temperature control system is piled to grain | |
| CN204634447U (en) | A kind of insulated ventilation low-temperature grain-storage storehouse, Multilayer partition | |
| CN111670697A (en) | Room type storehouse integrated grain storage system | |
| CN101919442A (en) | Stored grain temperature adjusting method | |
| CN203985132U (en) | A kind of silo air circulation device | |
| CN114208505B (en) | Multipurpose grain storage machine capable of adjusting grain storage environment | |
| CN106134656A (en) | A kind of silo machine aeration ventilates and mends device for cooling | |
| CN108131767B (en) | Multifunctional temperature and humidity control device for granary | |
| CN212677824U (en) | Internal circulation temperature control system with water retention and cooling functions | |
| KR20120139218A (en) | Low temperature container | |
| CN201278696Y (en) | Super-layer aeration-cooling device on horizontal warehouse | |
| CN105843291A (en) | One-storey barn heat dissipation temperature control system based on heat pipe technology | |
| CN2934474Y (en) | Wind-cool insulation device for barn wall | |
| CN216930959U (en) | Unprocessed food grains low temperature storage system | |
| CN208143891U (en) | A kind of grain heap periphery standpipe ventilating system | |
| KR101020123B1 (en) | The grain depot of cool air distribution system | |
| CN216644683U (en) | Cut flower pressure difference pre-refrigeration house | |
| CN210399733U (en) | Semi-closed chicken manure pressure storehouse | |
| CN211982727U (en) | Grain storage device | |
| CN204707924U (en) | A kind of ensilage treating apparatus |
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 |