Grain drying system and drying process

Abstract

The invention discloses a grain drying system and a grain drying process. The grain drying system comprises a conveying system, a drying system and a warehousing system, the conveying system comprises a plurality of grain unloading pits, a drum screen and a plurality of wet granaries, the first elevator transfers grains in the grain unloading pits into the drum screen, the second elevator transfers unprocessed grains treated by the drum screen to the first belt conveyor, and the first belt conveyor transfers unprocessed grains provided by different grain unloading pits into the corresponding wet granaries; the drying system comprises a dust removal chamber, a plurality of grain drying machines and a grain feeding scraper arranged in the dust removal chamber, the second belt conveyor receives unprocessed grains output by the wet granary, and the third elevator receives the unprocessed grains on the second belt conveyor and transfers the unprocessed grains into the corresponding grain drying machines according to different wet granaries; the warehousing system comprises a dry granary, the in-granary transportation mechanism transfers grains in the grain dryer into the dry granary, and the out-granary transportation mechanism transfers the grains in the dry granary into the grain transport vehicle. The grain drying device can improve the grain drying efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of grain drying, and in particular to a grain drying system and a drying process. Background Art

[0002] Food is the foundation of a country. For a big country, sufficient food is crucial. First of all, for the population, if there is sufficient food, there will be no big fluctuations without importing from foreign countries, so large-scale food storage is needed. In order to ensure the quality of stored food for a long time, the country has established many food drying equipment in various regions. In order to ensure that the food can be thoroughly dried and the loss is small, the development of food drying technology is extremely important.

[0003] Existing grain drying systems, such as the grain drying system of the Chinese invention patent application with patent number 201210445927.7, disclose a technical solution of "lifting the grain stored in the grain storage room by the elevator and transmitting it to the wet barn through the first transport pipeline, preliminarily treating the moisture in the grain, and then lifting it by the elevator and transmitting it to the drying tower by the second transport pipeline. The sensor in the drying tower measures the moisture content in the grain in real time, and adjusts the size of the control valve to control the transmission of hot air. Finally, the dried grain is stored in the dry barn, achieving the characteristics of long storage time, low cost and uniform drying". Although this technical solution can extend the storage time of grain by using the drying system, there are still many processes that require manual participation, and the drying efficiency is low.

[0004] Therefore, it is urgent to research and develop a grain drying system and drying process to solve the above technical problems. Summary of the invention

[0005] In order to overcome some deficiencies of the prior art, an object of the present invention is to provide a grain drying system and a drying process, which can improve the drying efficiency of grain.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A grain drying system, the specific implementation plan is as follows:

[0008] A grain drying system comprises a conveying system, a drying system and a storage system, wherein the conveying system receives and stores raw grains, the drying system dries the raw grains to obtain dried grains, and the storage system stores the dried grains;

[0009] The conveying system includes a plurality of grain unloading pits, drum screens and a plurality of wet barns. A first elevator is provided between the grain unloading pit and the drum screen. The first elevator transfers grain in the grain unloading pit to the drum screen. A first belt conveyor and a second elevator are provided between the drum screen and the wet barn. The second elevator transfers raw grain processed by the drum screen to the first belt conveyor. The first belt conveyor transfers raw grain provided by different grain unloading pits to corresponding wet barns.

[0010] The drying system includes a dust removal chamber, a plurality of grain dryers, and a grain feeding scraper arranged in the dust removal chamber. A second belt conveyor and a third elevator are arranged between the dust removal chamber and the wet barn. The second belt conveyor receives the raw grain output from the wet barn. The third elevator receives the raw grain on the second belt conveyor and transfers it to the corresponding grain dryer according to different wet barns.

[0011] The storage system includes a dry barn, an in-barn transport mechanism and an out-barn transport mechanism. The in-barn transport mechanism transfers the grain in the grain dryer to the dry barn, and the out-barn transport mechanism transfers the grain in the dry barn to a grain transport vehicle.

[0012] In some embodiments, the storage system also includes a cache bin and a cache entry mechanism located between the dry barn and the out-of-warehouse transportation mechanism, the cache entry mechanism transfers the grain in the dry barn to the cache bin, and the out-of-warehouse transportation mechanism transfers the grain in the cache bin to a grain transport vehicle.

[0013] In some embodiments, the cache warehousing mechanism includes a third belt conveyor, a fourth belt conveyor and a fourth elevator. The third belt conveyor is connected to the grain outlet of the dry barn to receive the dry grain output from the dry barn. The fourth belt conveyor transfers the dry grain on the third belt conveyor to the fourth elevator. The fourth elevator transfers the dry grain to the corresponding cache bin according to different dry barns.

[0014] In some embodiments, the out-of-warehouse transportation mechanism includes a sixth elevator, which is connected to the grain outlet of the buffer warehouse and receives the dry grain output from the buffer warehouse and transfers it to the grain transportation vehicle.

[0015] In some embodiments, the warehouse transportation mechanism includes a fifth belt conveyor, a sixth belt conveyor, a seventh belt conveyor, an eighth belt conveyor and a fifth elevator. The fifth belt conveyor is connected to the grain outlet of the grain dryer to receive the dry grain output by the grain dryer. The sixth belt conveyor transfers the dry grain on the fifth belt conveyor to the fifth elevator. The fifth elevator transfers the dry grain to the seventh belt conveyor. The seventh belt conveyor transfers the dry grain to the eighth belt conveyor. The eighth belt conveyor transfers the dry grain to the corresponding dry grain bin according to different grain dryers.

[0016] In some of the embodiments, a first dust removal mechanism is provided in the grain unloading pit and / or the drum screen; and a second dust removal mechanism is provided in the dust removal chamber.

[0017] In some of the embodiments, each of the wet barns and each of the dry barns is equipped with a ventilation system, a temperature sensor, and a humidity sensor.

[0018] In some of the embodiments, flow scales are provided on the third elevator, the in-warehouse transport mechanism, and the out-warehouse transport mechanism.

[0019] In some of the embodiments, the grain dryer includes a low-temperature circulation dryer and a bran hot air furnace.

[0020] The present invention also provides a grain drying process, comprising the following steps:

[0021] S1: grain unloading pit receiving raw grain;

[0022] S2: The first elevator transfers the raw grain in the grain unloading pit to the drum screen for screening and filtration;

[0023] S3: The second elevator and the first belt conveyor transfer the raw grain processed by the drum screen to the corresponding wet barn according to different unloading pits. The ventilation system in the wet barn maintains the moisture and temperature of the raw grain;

[0024] S4: The raw grain in the wet barn passes through the second belt conveyor, the third elevator, the flow scale and the grain feeding scraper in turn and enters the corresponding grain dryer for drying;

[0025] S5: The dried grain outputted from the grain dryer passes through the fifth belt conveyor, the sixth belt conveyor, the flow scale, the fifth elevator, the seventh belt conveyor and the eighth belt conveyor in sequence and then enters the matching dry barn. The ventilation system in the dry barn maintains the moisture and temperature of the dried grain.

[0026] S6: The dry grain output from the dry barn passes through the third belt conveyor, the fourth belt conveyor, the fourth elevator and the flow scale in sequence and then enters the grain transport vehicle.

[0027] Based on the above technical solution, a grain drying system and drying process of the present invention has the following beneficial effects compared with the prior art:

[0028] By adopting the grain drying system including the conveying system, the drying system and the storage system, the raw grain enters the wet barn for storage through the grain unloading pit, the first elevator, the drum screen and the first belt conveyor. When drying is needed, the raw grain passes through the second belt conveyor, the third elevator and the grain feeding scraper and then enters the grain dryer for drying. The dried grain obtained after drying is entered into the dry barn for storage through the warehouse entry transportation mechanism. When the grain needs to be shipped out, the drying beam in the dry barn is transferred to the grain vehicle through the warehouse exit transportation mechanism. In the whole process, except for the grain vehicle which needs to be manually driven, the conveying system, the drying system and the storage system are controlled by the control system to operate automatically to realize the drying storage of the raw grain, thereby improving the drying efficiency of the grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of a transportation system of the present invention;

[0030] Figure 2 is a schematic diagram of a drying system of the present invention;

[0031] Figure 3 is a schematic diagram of a storage system of the present invention;

[0032] Figure 4 It is a schematic diagram of the drying process of the present invention.

[0033] Description of reference numerals:

[0034] 100, transport system; 110, grain unloading pit; 120, first elevator; 130, drum screen; 140, second elevator; 150, first belt conveyor; 160, wet barn; 170, second belt conveyor; 180, third elevator; 190, bottom belt conveyor; 200, drying system; 210, grain inlet scraper; 211, first scraper; 212, second scraper; 220, dust removal chamber; 230, grain dryer; 300 , storage system; 310, fifth belt conveyor; 320, sixth belt conveyor; 330, fifth elevator; 340, seventh belt conveyor; 350, eighth belt conveyor; 360, dry barn; 361, third belt conveyor; 362, fourth belt conveyor; 363, fourth elevator; 364, second bottom belt conveyor; 370, sixth elevator; 380, cache bin belt conveyor; 390, cache bin; 400, flow scale; 500, first dust removal mechanism. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0036] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0039] Unless otherwise defined, all technical terms and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0040] Embodiment 1:

[0041] like Figure 1-3 As shown, this embodiment provides a grain drying system 200, including a transportation system 100, a drying system 200 and a storage system 300, and the transportation system 100, the drying system 200 and the storage system 300 are related. In actual use, the transportation system 100 is used to receive the raw grain provided by the grain truck and transfer it to the drying system 200, the drying system 200 is used to dry the raw grain provided by the transportation system 100 and then transfer it to the storage system 300, and the storage system 300 is used to store the dried grain after the drying process of the drying system 200, so that the grain truck can transport the dried grain.

[0042] Specifically, it also includes a control system, which is electrically or communicatively connected to the transportation system 100, the drying system 200 and the storage system 300 respectively, and the transportation system 100, the drying system 200 and the storage system 300 are associated with each other by control of the control system.

[0043] like Figure 1 As shown, the transportation system 100 includes a grain unloading pit 110, a first elevator 120, a drum screen 130, a second elevator 140, a first belt conveyor 150, a wet barn 160, a second belt conveyor 170, a third elevator 180 and a flow scale 400.

[0044] There are several grain unloading pits 110 , and different grains are unloaded into different grain unloading pits 110 according to different grain classification requirements.

[0045] At least one of the first elevators 120 is provided. When the first elevator is provided, the first elevator 120 uses multiple channels to conduct all the grain unloading pits 110 and simultaneously receives grains in all the grain unloading pits 110. In this embodiment, multiple first elevators 120 are preferably provided, and each first elevator 120 corresponds to one or more grain unloading pits 110. The specific number of first elevators 120 and the matching method with the unloading pits can be set according to the daily processing volume required for grain drying.

[0046] At least one cylindrical screen 130 is provided. When there is one cylindrical screen 130, all outlets of the first elevators 120 are connected to the cylindrical screen 130, and the cylindrical screen 130 is used to clean impurities, dust, and empty grains in the raw grains. In addition, since the cylindrical screen 130 has a good effect of self-discharging large impurities and a simple structure, the impurity removal efficiency of the raw grains can be improved.

[0047] Similarly, in this embodiment, a plurality of the cylindrical screens 130 are preferably provided to improve the dust removal efficiency of the raw grains, and the specific setting can be set according to the daily processing volume required for grain drying.

[0048] Similarly, the number of the second elevators 140 is set in the same way as the first elevator 120, and can be set according to the daily processing volume required for grain drying. The explanation will not be repeated here. The second elevator 140 is mainly used to transport the clean raw grain after the impurity removal by the cylindrical screen 130 to the first belt conveyor 150.

[0049] In addition, a first dust removal mechanism 500 may be provided in the unloading pit and the cylindrical screen 130. The first dust removal mechanism 500 may adopt equipment used for grain dust removal in the prior art, and any equipment that can remove dust from raw grains is acceptable, and no detailed description is given here.

[0050] The first belt conveyor 150 is controlled by the control system according to a program so that different raw grains enter different wet barns 160 for temporary storage.

[0051] It can be understood that the control program of the control system uses a computer to cooperate with the detection sensors set on the first elevator 120, the drum screen 130 and the second elevator 140 to track the walking path of the raw grains to control different raw grains to enter different wet barns 160. The detection sensor can be an existing infrared sensor, a photosensitive sensor, etc. as long as it can detect whether the raw grains pass through.

[0052] It is understandable that a ventilation system, a humidity sensor and a temperature sensor need to be installed in the wet barn 160 to monitor the temperature and humidity in the wet barn 160 in real time. The ventilation system uses existing fan technology to force ventilation under the control of the control system to allow outside air to pass through the grain pile and fully exchange moisture and heat with the grains in the grain, thereby achieving ventilation goals such as ventilation cooling, precipitation, and temperature control.

[0053] A bottom belt conveyor 190 is also provided at the bottom of each wet barn 160 , and the bottom belt conveyor 190 is used to transfer the raw grains in the wet barn 160 to the second belt conveyor 170 .

[0054] The second belt conveyor 170 is provided with at least one, and preferably two in this embodiment, and the specific number can be set according to the daily processing volume required for grain drying. The second belt conveyor 170 is located below the grain outlet of the wet barn 160, and is used to receive the raw grain provided by the bottom belt conveyor 190 and transport it to the third elevator 180.

[0055] The third elevator 180 is provided with at least one, and preferably two in this embodiment, and the specific number can be set according to the daily processing volume required for grain drying. It is used to receive the raw materials on the second belt conveyor 170 and transport them to the flow scale 400 matched with the second elevator 140. The flow scale 400 counts the raw grain output from the second elevator 140, confirms that the amount of raw grain input into the drying system 200 is controlled, and the weight of the raw grain entering the drying system 200 each time is a preset weight.

[0056] like Figure 2 As shown, the drying system 200 includes a grain feeding scraper 210, a dust removal chamber 220 and a grain dryer 230. The number of the grain feeding scraper 210 matches the number of the third elevator 180, and is used to receive the raw grain measured by the flow scale 400 and transport it to the dust removal chamber 220.

[0057] A second dust removal mechanism is provided in the dust removal chamber 220, and the second dust removal mechanism is used to further remove dust from the raw grain on the grain feeding scraper 210. The second dust removal mechanism adopts the equipment used for grain dust removal in the prior art, and any equipment that can remove dust from raw grain is acceptable, and no detailed description is given here.

[0058] The grain feeding scraper 210 inputs different types of raw grains into different grain dryers for processing under the control of the control system according to the control program.

[0059] The grain feeding scraper 210 includes a first scraper 211 entering into the dust removal chamber 220 and a second scraper 212 entering into the grain dryer 230 .

[0060] The grain dryer 230 includes a low-temperature circulation dryer and a plurality of bran hot air furnaces. In actual use, every six low-temperature circulation dryers are combined with one bran hot air furnace to be used as a grain drying machine.

[0061] The drying temperature of the low-temperature circulation drying is set at 45 to 55 degrees Celsius. The use of a low-temperature circulation dryer can monitor the moisture content of grain in real time, dry the grain reasonably, and improve the automation degree and drying efficiency of grain drying.

[0062] The bran hot air furnace can use the bran removed during the grain drying and transportation process as fuel, thereby improving the economic efficiency of the drying system 200.

[0063] like Figure 3 As shown, the storage system 300 includes a warehouse entry and transportation mechanism, a dry barn 360, a cache warehouse entry mechanism, a cache barn 390 and a warehouse exit and transportation mechanism. The warehouse entry and transportation mechanism is used to receive the dry grain output by the grain dryer 230 in the drying system 200 and transfer it to the dry barn 360 for storage, the cache warehouse entry mechanism is used to receive the dry grain in the dry barn 360 and transfer it to the cache barn 390 for temporary storage, and the warehouse exit and transportation mechanism is used to transfer the dry grain in the cache barn 390 to a grain transport vehicle for the transfer of the dry grain.

[0064] The warehouse transportation mechanism includes a fifth belt conveyor 310, a sixth belt conveyor 320, a fifth elevator 330, a seventh belt conveyor 340 and an eighth belt conveyor 350. The fifth belt conveyor 310 is used to receive the grain output by all grain dryers 230 and transport it to the position of the flow scale 400 to count the weight of the grain. The sixth belt conveyor 320 is used to receive the dried grain from the fifth belt conveyor 310 and transfer it to the fifth elevator 330. The fifth elevator 330 is placed on the seventh belt conveyor 340. The seventh belt conveyor 340 serves as the main belt conveyor above the dry barn 360. The dry grain supplied by the fifth elevator 330 is transferred to the eighth belt conveyor 350 above one or more dry barns 360. The eighth belt conveyor 350 is used to transfer the dry grain to the corresponding dry barn 360 according to the control system.

[0065] Similarly, a ventilation system, a humidity sensor and a temperature sensor need to be installed in the dry barn 360 to monitor the temperature and humidity in the wet barn 160 in real time. The ventilation system uses existing fan technology to force ventilation under the control of the control system to allow outside air to pass through the grain pile and fully exchange moisture and heat with the grains in the grain, thereby achieving ventilation goals such as ventilation cooling, precipitation, and temperature control.

[0066] A second bottom belt conveyor 364 is provided at the bottom of the dry grain bin 360 for receiving the dry grain outputted from the dry grain bin 360 .

[0067] The cache storage mechanism includes a third belt conveyor 361, a fourth belt conveyor 362 and a fourth elevator 363. The third belt conveyor 361 is connected to the second bottom belt conveyor 364 to receive the dry grain output from the dry barn 360. The fourth belt conveyor 362 transfers the dry grain on the third belt conveyor 361 to the fourth elevator 363. The fourth elevator 363 transfers the dry grain to the corresponding cache bin 390 according to different dry barns 360.

[0068] The out-of-warehouse transportation mechanism includes a sixth elevator 370, which is connected to the grain outlet of the buffer warehouse 390, receives the dry grain output by the buffer warehouse 390 and transfers it to the grain transportation vehicle. The number of the sixth elevator 370 can be set to one or more according to the daily processing volume required for grain drying.

[0069] The control system described in this embodiment is based on the Internet of Things technology in the prior art, based on the real-time feedback of the detection sensor in the prior art, and adjusts the position and delivery amount of the raw grain or dry grain in real time according to the pre-set program, detects various indicators in the wet barn 160, the dry barn 360 and the buffer bin 390 in real time and gives timely feedback, and the computer adjusts various indicators to ensure the safe storage and transfer of grain. The pre-set program is a commonly used control technology in the existing Internet of Things technology, and will not be described in detail here.

[0070] Embodiment 2:

[0071] This embodiment provides a grain drying process, comprising the following steps:

[0072] S1: grain unloading pit 110 receives raw grain;

[0073] S2: The first elevator 120 transfers the raw grain in the grain unloading pit 110 to the cylindrical screen 130 for screening and filtering;

[0074] S3: The second elevator 140 and the first belt conveyor 150 transfer the raw grain processed by the drum screen 130 to the corresponding wet barn 160 according to different grain unloading pits 110. The ventilation system in the wet barn 160 maintains the moisture and temperature of the raw grain;

[0075] S4: The raw grain in the wet barn 160 passes through the bottom belt conveyor 190, the second belt conveyor 170, the third elevator 180, the flow scale 400 and the grain feeding scraper 210 in sequence and enters the corresponding grain dryer 230 for drying;

[0076] S5: The dried grain outputted from the grain dryer 230 passes through the fifth belt conveyor 310, the sixth belt conveyor 320, the flow scale 400, the fifth elevator 330, the seventh belt conveyor 340 and the eighth belt conveyor 350 in sequence and then enters the matching dry grain bin 360. The ventilation system in the dry grain bin 360 maintains the moisture and temperature of the dried grain.

[0077] S6: The dry grain output from the dry barn 360 passes through the second bottom conveyor 364, the third conveyor 361, the fourth conveyor 362, the fourth elevator 363 and the flow scale 400 in sequence and then enters the grain transport vehicle.

[0078] like Figure 4 As shown, the grain unloading pit 110 in step S1 is preset with different grain unloading pits 110 receiving different grain raw materials. When the grain truck carrying different grains is transported to the corresponding grain unloading pit 110 position, the grain is poured into the grain inlet of the grain unloading pit 110 .

[0079] The raw grain poured into the grain inlet is lifted by the first elevator 120 to the cylindrical screen 130 for impurity removal.

[0080] The clean raw grains after impurities removal are lifted by the second elevator 140 to the first belt conveyor 150 on the top of the wet barn 160. The first belt conveyor 150, driven by the control system, distributes different raw grains to the corresponding wet barn 160 according to a preset program.

[0081] Several wet barns 160 are divided into the same group. The wet barns 160 in the same group are connected to the same second belt conveyor 170 . Each second belt conveyor 170 is connected to a third elevator 180 . Each third elevator 180 is connected to a flow scale 400 .

[0082] The raw grain output from the wet barn 160 of the same group falls into the second belt conveyor 170 and is transported to the third elevator 180. The raw grain on the third elevator 180 passes through the flow scale 400 and enters the grain feeding scraper 210 of the drying system 200.

[0083] Every two groups of third elevators 180 correspond to a grain feeding scraper 210 , and each grain feeding scraper 210 corresponds to a plurality of grain dryers 230 .

[0084] The dried grain obtained by drying the raw grain in the grain dryer 230 passes through the fifth belt conveyor 310, the sixth belt conveyor 320, and the fifth elevator 330 in sequence and enters the seventh belt conveyor 340 located above the dry granary 360 as the main belt conveyor. The seventh belt conveyor 340 distributes the dried grain to a single or several eighth belt conveyors 350 under the control of the control system. The eighth belt conveyor 350 transfers different dried grains to different dry granaries 360 according to a preset program under the control of the control system.

[0085] Similarly, a number of dry barns 360 are divided into a group, and one or more groups of dry barns 360 are connected to the same third belt conveyor 361, or each group of dry barns 360 is connected to a third belt conveyor 361, and the dry grain in the dry barn 360 is sent to the fourth belt conveyor 362. The dry grain on the fourth belt conveyor 362 enters the buffer bin belt conveyor 380 on the top of the buffer bin under the drive of the fourth elevator 363. The buffer bin belt conveyor 380 conveys different types of dry grain into the corresponding buffer bin 390 under the control of the control system according to a preset program.

[0086] When the dry grain in the buffer bin 390 needs to be transferred outward, it enters the sixth elevator 370, and after being counted by the flow scale 400, it enters the grain truck for transportation.

[0087] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A grain drying system, characterized in that: It includes a conveying system, a drying system and a storage system, wherein the conveying system is used to receive and store raw grains, the drying system is used to dry the raw grains to obtain dried grains, and the storage system is used to store dried grains; The conveying system includes a plurality of grain unloading pits, drum screens and a plurality of wet barns. A first elevator is provided between the grain unloading pit and the drum screen. The first elevator transfers grain in the grain unloading pit to the drum screen. A first belt conveyor and a second elevator are provided between the drum screen and the wet barn. The second elevator transfers raw grain processed by the drum screen to the first belt conveyor. The first belt conveyor transfers raw grain provided by different grain unloading pits to corresponding wet barns. The drying system includes a dust removal chamber, a plurality of grain dryers, and a grain feeding scraper arranged in the dust removal chamber. A second belt conveyor and a third elevator are arranged between the dust removal chamber and the wet barn. The second belt conveyor receives the raw grain output from the wet barn. The third elevator receives the raw grain on the second belt conveyor and transfers it to the corresponding grain dryer according to different wet barns. The storage system includes a dry barn, an in-barn transport mechanism and an out-barn transport mechanism. The in-barn transport mechanism transfers the grain in the grain dryer to the dry barn, and the out-barn transport mechanism transfers the grain in the dry barn to a grain transport vehicle.

2. The grain drying system according to claim 1, characterized in that: The storage system also includes a buffer bin and a buffer entry mechanism disposed between the dry barn and the out-of-barn transport mechanism. The buffer entry mechanism transfers the grain in the dry barn to the buffer bin, and the out-of-barn transport mechanism transfers the grain in the buffer bin to a grain transport vehicle.

3. The grain drying system according to claim 2, characterized in that: The cache warehousing mechanism includes a third belt conveyor, a fourth belt conveyor and a fourth elevator. The third belt conveyor is connected to the grain outlet of the dry barn to receive the dry grain output from the dry barn. The fourth belt conveyor transfers the dry grain on the third belt conveyor to the fourth elevator. The fourth elevator transfers the dry grain to the corresponding cache bin according to different dry barns.

4. The grain drying system according to claim 3, characterized in that: The out-of-warehouse transportation mechanism includes a sixth elevator, which is connected to the grain outlet of the buffer warehouse and receives the dry grain output from the buffer warehouse and transfers it to the grain transportation vehicle.

5. The grain drying system according to any one of claims 1 to 4, characterized in that: The warehouse transportation mechanism includes a fifth belt conveyor, a sixth belt conveyor, a seventh belt conveyor, an eighth belt conveyor and a fifth elevator. The fifth belt conveyor is connected to the grain outlet of the grain dryer to receive the dry grain output by the grain dryer. The sixth belt conveyor transfers the dry grain on the fifth belt conveyor to the fifth elevator. The fifth elevator transfers the dry grain to the seventh belt conveyor. The seventh belt conveyor transfers the dry grain to the eighth belt conveyor. The eighth belt conveyor transfers the dry grain to the corresponding dry grain bin according to different grain dryers.

6. The grain drying system according to any one of claims 1 to 4, characterized in that: A first dust removal mechanism is provided in the grain unloading pit and / or the cylindrical screen; and a second dust removal mechanism is provided in the dust removal chamber.

7. The grain drying system according to any one of claims 1 to 4, characterized in that: A ventilation system, a temperature sensor and a humidity sensor are provided in each of the wet barns and each of the dry barns, and also include a control system, which is electrically or communicatively connected to the transportation system, the drying system and the storage system respectively.

8. The grain drying system according to any one of claims 1 to 4, characterized in that: Flow scales are provided on the third elevator, the in-warehouse transport mechanism and the out-warehouse transport mechanism.

9. The grain drying system according to any one of claims 1 to 4, characterized in that: The grain dryer comprises a low-temperature circulation dryer and a bran hot air furnace.

10. A grain drying process, characterized in that: The following steps are involved: S1: grain unloading pit receiving raw grain; S2: The first elevator transfers the raw grain in the grain unloading pit to the drum screen for screening and filtration; S3: The second elevator and the first belt conveyor transfer the raw grain processed by the drum screen to the corresponding wet barn according to different unloading pits. The ventilation system in the wet barn maintains the moisture and temperature of the raw grain; S4: The raw grain in the wet barn passes through the second belt conveyor, the third elevator, the flow scale and the grain feeding scraper in turn and enters the corresponding grain dryer for drying; S5: The dried grain outputted from the grain dryer passes through the fifth belt conveyor, the sixth belt conveyor, the flow scale, the fifth elevator, the seventh belt conveyor and the eighth belt conveyor in sequence and then enters the matching dry barn. The ventilation system in the dry barn maintains the moisture and temperature of the dried grain. S6: The dry grain output from the dry barn passes through the third belt conveyor, the fourth belt conveyor, the fourth elevator and the flow scale in sequence and then enters the grain transport vehicle.

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