Search

CN-118423966-B - Grain sectional drying equipment, grain sectional drying method and readable storage medium

CN118423966BCN 118423966 BCN118423966 BCN 118423966BCN-118423966-B

Abstract

The invention relates to grain sectional drying equipment, a grain sectional drying method and a readable storage medium. The grain sectional drying equipment comprises a first hot air module, a second hot air module, a microwave module, a transmission module, a plurality of humidity sensors and a controller, wherein the first hot air module, the second hot air module and the microwave module are sequentially arranged, the first hot air module is in a low-temperature large-air-volume working mode, the second hot air module is in a high-temperature small-air-volume working mode, and the transmission module is used for transmitting grains among the first hot air module, the second hot air module and the microwave module. The invention can form a complete drying process of quick dehumidification drying, slow dehydration drying and microwave uniform drying. The sectional variable-temperature drying utilizes the drying characteristics of grains, different drying temperatures are adopted in different time periods, and microwave drying is added in the final stage, so that the quality of the grains is effectively improved, and the drying energy can be reasonably distributed by the sectional drying method, so that the efficient energy-saving drying is realized, and the synchronous rising of the grain drying efficiency and the grain quality is ensured.

Inventors

  • BAI MINGFEI
  • CAO PENGFEI
  • ZHANG QIANG
  • YANG XINYU
  • LI XINYU
  • Qiu Tongxin

Assignees

  • 安徽云龙粮机有限公司

Dates

Publication Date
20260505
Application Date
20240416

Claims (9)

  1. 1. A grain sectional drying apparatus, characterized in that it comprises: The grain drying device comprises a first hot air module (1), a second hot air module (2) and a microwave module (3) which are sequentially arranged, wherein the working mode of the first hot air module (1) is low-temperature large air quantity, the working mode of the second hot air module (2) is high-temperature small air quantity, the first hot air module (1) and the second hot air module (2) both comprise a shell (11), a grain feeding unit (12), a hot air blower and a plurality of drying units (13), the grain feeding unit (12) is arranged at the upper end of the shell (11), the drying units (13) are arranged at intervals along a straight line, a drying section is formed in the shell (11), the drying section is positioned below the grain feeding unit (12), the hot air blower is arranged at one side of the shell (11), and the hot air blower is perpendicular to the falling direction of grains; The conveying module (4) is used for conveying grains among the first hot air module (1), the second hot air module (2) and the microwave module (3) and conveying grains at the bottom of the shell (11) to the upper part of the shell (11) for circulation; The humidity sensors are respectively arranged on the shell (11), the grain feeding unit (12) and the microwave module (3), and are used for monitoring the humidity of grains to be dried in real time and generating a first humidity signal, monitoring the humidity of grains in the hot air module I (1) in real time and generating a second humidity signal, monitoring the humidity of grains in the hot air module II (2) in real time and generating a third humidity signal, and monitoring the humidity of grains in the microwave module (3) in real time and generating a fourth humidity signal; The controller is used for setting a humidity standard value, a low-moisture standard value, a drying standard value and a completion standard value, comparing the humidity signal I with the humidity standard value, controlling the hot air module I (1) to be closed and the hot air module II (2) to be started if the humidity signal I is smaller than or equal to the humidity standard value, controlling the hot air module I (1) to be started and the hot air module II (2) to be closed if the humidity signal I is larger than the humidity standard value, comparing the humidity signal II with the low-moisture standard value, controlling the conveying module (4) to convey grains in the hot air module I (1) into the hot air module II (2) if the humidity signal II is smaller than or equal to the low-moisture standard value, controlling the conveying module (4) to convey grains at the bottom of the hot air module I (1) to the top of the hot air module I (1) to be circulated if the humidity signal II is larger than the low-moisture standard value, controlling the conveying module III to be compared with the drying standard value, and controlling the conveying module II (4) to convey grains in the hot air module II (3) into the drying module III if the humidity signal III is smaller than or equal to the drying standard value, the controller is also used for comparing the humidity signal IV with a completion standard value, and if the humidity signal IV is smaller than or equal to the completion standard value, the transmission module (4) is controlled to send out the grains in the microwave module (3).
  2. 2. The grain sectional drying apparatus according to claim 1, wherein each drying unit (13) includes two partition boards (131) provided with ventilation holes and one complete plane guide board (132), two partition boards (131) are arranged in parallel and correspondingly, one end of each guide board (132) is fixedly connected with one end of one partition board (131), the other end of each guide board (132) is fixedly connected with one end of the other partition board (131), and the guide boards (132) and the two partition boards (131) are integrally N-shaped.
  3. 3. The grain sectional drying apparatus according to claim 2, wherein an air channel is formed between the deflector (132) and the partition plate (131), a grain channel (133) is formed at an interval between adjacent drying units (13), the air channels communicated with two sides of the grain channel (133) are an air inlet channel (134) and an air outlet channel (135), and hot air flows of the air heater sequentially pass through the air inlet channel (134), the grain channel (133) and the air outlet channel (135).
  4. 4. A grain sectional drying apparatus according to claim 3, wherein the width of the grain channel (133) is 400mm and the height thereof is 1000mm, the height of the air channel is the same as the height of the grain channel (133), the diameter of the through-hole wind on the partition plate (131) is 2-6mm, and the included angle between the baffle plate (132) and the partition plate (131) is 24 degrees.
  5. 5. The grain sectional drying apparatus according to claim 2, wherein each drying unit (13) further comprises a grain dividing plate (136), the grain dividing plate (136) being of inverted V-shape and being fixedly connected to the tops of the two partition plates (131).
  6. 6. The grain sectional drying apparatus according to claim 1, wherein the temperature of the first hot air module (1) is 40-50 ℃ and the wind speed is 8-10m/s in the operation mode, and the temperature of the second hot air module (2) is 60-70 ℃ and the wind speed is 5-7m/s in the operation mode.
  7. 7. The grain sectional drying apparatus according to claim 1, wherein the grain feeding unit (12) comprises a packing auger, a plurality of evenly distributed lower grain openings are formed in the top of the shell (11), and the packing auger is attached to the top of the shell (11) and is communicated with the plurality of lower grain openings.
  8. 8. A method of sectional drying of grain, characterized in that it is applied to the sectional drying apparatus of grain according to any one of claims 1 to 7, comprising the steps of: According to the combination form of moisture in grain and the change rule of the combination energy of moisture in grain along with temperature and moisture content, drying according to the migration rule of grain drying moisture is carried out by adjusting the drying process parameters, the grain with higher humidity is subjected to rapid dehumidification and drying in the first drying stage by adopting a low-temperature large-air-volume working mode, the grain is subjected to slow dehydration and drying in the second drying stage by adopting a high-temperature small-air-volume working mode, and the grain is subjected to uniform drying in the third drying stage by adopting a microwave drying working mode.
  9. 9. The method for sectional drying of grain according to claim 8, wherein the grain to be dried is dried directly in the second drying stage when the initial humidity of the grain to be dried is low.

Description

Grain sectional drying equipment, grain sectional drying method and readable storage medium Technical Field The invention relates to the technical field of drying equipment, in particular to grain sectional drying equipment, a drying method and a readable storage medium. Background Grain drying is a critical component of agricultural production, and the purpose of the grain drying is to ensure that the quality and durability of agricultural products are maintained during storage and processing by removing moisture. Conventional grain drying equipment and drying methods tend to have significant energy consumption in terms of heating and ventilation. This results in an increase in production cost and also places a considerable burden on the environment. Because of the design limitation of the traditional drier, the hot air often cannot fully cover the grain surface, so that the drying effect is poor and the time is long, thereby influencing the yield and quality of agricultural products. In order to achieve the economical efficiency of drying, the drying rate is often improved in a temperature-improving manner in reality, but the excessively high temperature and the excessively high drying speed easily lead to the improvement of the waist bursting rate, even the phenomenon of yellowing of the scorching can occur, and the grain quality is extremely influenced. Disclosure of Invention Based on this, it is necessary to provide a grain sectional drying apparatus, a drying method and a readable storage medium for solving the problem that the drying rate of the conventional grain drying apparatus and the quality of the dried grain conflict. A grain sectional drying apparatus, comprising: The hot air system comprises a first hot air module, a second hot air module and a microwave module, wherein the first hot air module is in a low-temperature large air volume working mode, the second hot air module is in a high-temperature small air volume working mode, the first hot air module and the second hot air module comprise a shell, a grain feeding unit, a hot air blower and a plurality of drying units, the grain feeding unit is arranged at the upper end of the shell, the drying units are arranged at intervals along a straight line, a drying section is formed in the shell, and the drying section is positioned below the grain feeding unit; The conveying module is used for conveying grains among the first hot air module, the second hot air module and the microwave module and conveying grains at the bottom of the shell to the upper part of the shell for circulation; The humidity sensors are respectively arranged on the shell, the grain feeding unit and the microwave module, and are used for monitoring the humidity of grains to be dried in real time and generating a humidity signal I, monitoring the humidity of grains in the hot air module I in real time and generating a humidity signal II, monitoring the humidity of grains in the hot air module II in real time and generating a humidity signal III, and monitoring the humidity of grains in the microwave module in real time and generating a humidity signal IV; The controller is used for setting a humidity standard value, a low-moisture standard value, a drying standard value and a completion standard value, comparing the humidity signal I with the humidity standard value, controlling the hot air module I to be closed and the hot air module II to be started if the humidity signal I is smaller than or equal to the humidity standard value, controlling the hot air module I to be started and the hot air module II to be closed if the humidity signal I is larger than the humidity standard value, comparing the humidity signal II with the low-moisture standard value, controlling the transmitting module to transmit grains in the hot air module I into the hot air module II if the humidity signal II is smaller than or equal to the low-moisture standard value, controlling the transmitting module to transmit grains in the hot air module I to the top of the hot air module I for circulation if the humidity signal II is larger than the low-moisture standard value, controlling the transmitting module to transmit the humidity signal III to the top of the hot air module I, and controlling the hot air module II to transmit grains in the hot air module II into the microwave module and starting the microwave module if the humidity signal III is smaller than or equal to the humidity signal III and the humidity signal III is smaller than or equal to the drying standard value, and controlling the transmitting the humidity signal III to the top of the hot air module to be transmitted to the top of the hot air module I for circulation. As a preferred example, each drying unit includes two baffles provided with ventilation holes and a complete plane, two baffles are correspondingly arranged in parallel, one end of each baffle is fixedly connected with one end of one baffle, the other end of each baffle is f