Constant-heat circulating full-heat recovery grain drying tower humidity monitoring system

Abstract

This invention relates to the technical field of humidity monitoring in grain drying towers, and discloses a constant-heat circulation total heat recovery grain drying tower humidity monitoring system, comprising: a preheating component, including an upper tower body, a box body disposed on the upper tower body, and a preheating component disposed within the box body; a drying component, including several stacked drying tower bodies, a circulation box body disposed on each drying tower body, and a circulation component disposed within the circulation box body; and a cooling component, wherein the cooling component is disposed at the lower end of several drying tower bodies, and a cooling component is disposed at the cooling component. The preheating component, drying component, and cooling component work together to achieve preheating and heating of the grain, constant-heat drying, total heat recovery, and cooling discharge. Moreover, this invention first proposes a constant-heat circulation drying process and drying characteristics, overcoming the shortcomings of existing technologies such as large temperature difference between upper and lower layers and incomplete utilization of waste heat.

Description

Technical Field

[0001] This invention relates to the technical field of humidity monitoring in grain drying towers, and more particularly to a humidity monitoring system for a constant heat circulation total heat recovery grain drying tower. Background Technology

[0002] Most existing grain drying equipment lacks online humidity monitoring and closed-loop control, making it impossible to accurately collect and adjust the real-time moisture content of the material during the drying process. It relies solely on manual experience or periodic sampling for judgment, resulting in poor stability and uniformity in the drying process, easily leading to under-drying, over-drying, and localized overheating, thus affecting material quality and production efficiency. Furthermore, traditional drying systems lack humidity sensors, making it impossible to dynamically adjust heating power, circulating air volume, and drying time based on actual material humidity changes. This results in high energy consumption, low automation, and difficulty in meeting the demands for continuous, intelligent, and high-quality grain drying. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the above-mentioned grain drying towers, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a constant-heat circulation total heat recovery grain drying tower humidity monitoring system, comprising: a preheating component, including an upper tower body, a box body disposed on the upper tower body, and a preheating component disposed within the box body; a drying component, including a plurality of stacked drying tower bodies, a circulation box body disposed on each drying tower body, and a circulation component disposed within the circulation box body, wherein each of the plurality of drying tower bodies is provided with an inlet for feeding grain, and the upper tower body is disposed on the plurality of drying tower bodies; a cooling component, wherein the cooling component is disposed at the lower end of the plurality of drying tower bodies, and a cooling component is disposed at the cooling component; and a humidity online monitoring module is provided at the discharge port of the drying tower body, the humidity online monitoring module including a microwave humidity detection unit, a signal conditioning unit, and a data processing unit.

[0007] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, the preheating component includes a first blower disposed inside the box and a heater disposed inside the box. The upper tower body is provided with a first air inlet and a first air outlet. The first air inlet is located on the side of the upper tower body close to the box body, and the first air outlet is located on the side of the upper tower body away from the box body. The position of the first air outlet is higher than the position of the first air inlet. The first blower blows air towards the first air inlet. The heater is located at the rear end of the first blower.

[0008] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, the cooling component includes a bottom tower body disposed at the lower end of a plurality of drying tower bodies and a cooling box body disposed on the bottom tower body. The bottom tower body is provided with a second air inlet and a second air outlet. The second air inlet is disposed at the end of the bottom tower body away from the cooling box body, and the second air outlet is disposed at the end of the bottom tower body close to the cooling box body. The position of the second air inlet is higher than the position of the second air outlet.

[0009] The cooling component includes a second blower disposed inside the cooling chamber and a heat recovery unit disposed inside the cooling chamber. The second blower is positioned toward the heat recovery unit, and the heat recovery unit is connected to a heater.

[0010] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, wherein: each of the drying tower bodies is stacked on top of each other, a through hole is opened on the drying tower body, an installation partition is provided between the drying tower bodies, a feeding plate is rotatably connected to the installation partition, a locking element is provided on the feeding plate, and the lower end of the drying tower body is recessed.

[0011] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, the drying tower body has a third air inlet and a third air outlet on its side wall. The circulation component includes a circulation duct installed in the circulation box, a dust collector installed in the circulation duct, a pulse generator installed on the dust collector, a superconducting heat recovery unit installed in the circulation duct, a condenser installed in the circulation duct, and a superconducting heater installed in the circulation duct. The upper end of the circulation duct corresponds to the third air outlet, and the lower end of the circulation duct corresponds to the third air inlet. The dust collector, pulse generator, superconducting heat recovery unit, condenser, and superconducting heater are all installed at the upper end of the circulation duct. A water collection tray is installed at the lower end of the superconducting heat recovery unit, condenser, and superconducting heater.

[0012] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, wherein: a blower is provided at the lower end of the circulating air duct, an evaporator is provided at the rear end of the blower, a compressor is provided in the circulating box, a circulating refrigerant channel is connected between the evaporator, the compressor and the condenser, a circulating pump is provided between the evaporator and the condenser, and the blower is positioned towards the third air inlet.

[0013] The pulse generator is equipped with several blowing rods that extend into the dust collector, and the pulse generator is equipped with blowing components.

[0014] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, the blowing component includes a first return air recovery pipe disposed in the dust collector, a second return air recovery pipe disposed in the dust collector, and a gas storage pipe disposed at the lower end of the second return air recovery pipe. A ventilation pipe is connected between the second return air recovery pipe and the gas storage pipe. A recovery component is disposed in the dust collector, and the first return air recovery pipe is connected to the second return air recovery pipe.

[0015] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, wherein: the gas storage pipe has openings at both ends, the gas storage pipe has an air jet pipe in the middle section, the air jet pipe is connected to the spray rod, a compression block is slidably connected in the opening, a pressure block is slidably connected on the second return air recovery pipe, and the recovery component controls the sliding of the compression block and the pressure block.

[0016] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, the recovery component includes a rotating block rotatably connected to a dust collector, a first swing rod disposed on the rotating block, a second swing rod rotatably connected to the dust collector, and a drive rod hinged to the lower end of the second swing rod. The upper ends of the first swing rod and the second swing rod are hinged together. There are two of each of the first swing rod, the second swing rod, and the drive rod, each corresponding to two compression blocks. The drive rod is hinged to the end of the compression block. A lower pressure rod is hinged to one of the first swing rods on the rotating block. The lower end of the lower pressure rod is hinged to the lower pressure block. A motor for driving the first swing rod to rotate is disposed on the rotating block. Both the first swing rod and the second swing rod are eccentrically hinged to the rotating block.

[0017] As a preferred embodiment of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention, wherein: a partition plate is also provided between the bottom tower body and the drying tower body, and a receiving window is provided on the bottom tower body.

[0018] The beneficial effects of this invention are as follows: By installing a humidity sensor within the drying system, the moisture content of the material can be monitored online in real time throughout the drying process. The monitoring signal is then synchronously fed back to the control system, enabling automatic closed-loop adjustment of heating power, circulating air volume, and drying time. This effectively avoids problems such as under-drying, over-drying, and localized overheating, significantly improving drying uniformity and stability, and ensuring that the material quality consistently meets standards. The humidity sensor also allows the system to intelligently adjust operating parameters based on actual moisture changes in the material, reducing ineffective energy consumption, improving energy utilization and drying efficiency, and achieving automated, intelligent, and precise operation of grain drying, thereby enhancing overall production efficiency and equipment reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a schematic diagram of the overall structure of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention.

[0021] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the humidity monitoring system of the constant heat circulation total heat recovery grain drying tower of the present invention.

[0022] Figure 3 This is a schematic diagram of the internal structure of the drying tower in the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention.

[0023] Figure 4 This is a front view schematic diagram of the internal structure of the drying tower of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention.

[0024] Figure 5 This is a schematic diagram of the upper and lower tower bodies of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention.

[0025] Figure 6 This is a schematic diagram of the internal structure of the dust collector in the humidity monitoring system of the constant heat circulation total heat recovery grain drying tower of the present invention.

[0026] Figure 7 This is a schematic diagram of the spray component of the humidity monitoring system for the constant heat circulation total heat recovery grain drying tower of the present invention.

[0027] Figure 8 This is a cross-sectional schematic diagram of the spray component structure of the constant heat circulation total heat recovery grain drying tower humidity monitoring system of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 100, Preheating assembly; 101, Upper tower body; 102, Box body; 103, Preheating component; 200, Drying assembly; 201, Drying tower body; 202, Circulation box body; 203, Circulation component; 204, Feed inlet; 300, Cooling assembly; 301, Cooling component; 1031, First blower; 1032, Heater; 1033, First air inlet; 1034, First air outlet; 3001, Bottom tower body; 3002, Cooling box body; 3003, Second air inlet; 3004, Second air outlet; 3011, Second blower; 3012, Heat recovery unit; 104, Through hole; 105, Mounting partition; 106, Feed plate; 205, Third air inlet; 206, Third air outlet; 2031, Circulation... Circulating air duct; 2032, dust collector; 2033, pulse generator; 2034, superconducting heat recovery unit; 2035, condenser; 2036, superconducting heater; 2037, water collection tray; 2038, air blower; 2039, evaporator; 2040, compressor; 2041, circulating refrigerant passage; 2042, jet bar; 2043, circulating pump; 400, jet component; 401, first return air recovery pipe; 402, second return air recovery pipe; 403, gas storage pipe; 404, vent pipe; 405, jet pipe; 406, compression block; 407, lower pressure block; 500, rotating block; 501, first swing rod; 502, second swing rod; 503, drive rod; 504, lower pressure rod; 505, motor; 506, anode plate; 507, cathode plate. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0032] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0033] Example 1

[0034] Reference Figures 1-8 This first embodiment of the invention provides a humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower, comprising a preheating component 100, a drying component 200, and a cooling component 300. The three components work together to achieve preheating and heating of the grain, constant-heat drying, total heat recovery, and cooling discharge. This system specifically addresses the problems of low thermal efficiency, serious heat waste, uneven drying, and easy deterioration of grain in traditional drying towers, significantly improving the efficiency and quality of grain drying and adapting to the batch drying needs of various grains such as wheat, corn, and rice.

[0035] Furthermore, the preheating component 100 is a pre-treatment unit for grain drying, realizing the initial heating of grain and preheating of hot air. In this embodiment, the preheating component 100 includes an upper tower body 101, a box body 102 disposed on the upper tower body 101, and a preheating component 103 disposed in the box body 102. The upper tower body 101 is formed by welding insulated steel plates, and the inner wall is provided with an insulation layer. The box body 102 is fixed to one side of the upper tower body 101, and the preheating component 103 blows hot air into the upper tower body 101 for preheating.

[0036] Furthermore, in this embodiment, the preheating component 103 includes a first blower 1031 disposed inside the housing 102 and a heater 1032 disposed inside the housing 102. A first air inlet 1033 and a first air outlet 1034 are provided on the upper tower 101. The first air inlet 1033 is located on the side of the upper tower 101 close to the housing 102, while the first air outlet 1034 is located on the side of the upper tower 101 away from the housing 102. The position of the first air outlet 1034 is higher than the position of the first air inlet 1033. The first blower 1031 blows air toward the first air inlet 1033, and the heater 1032 is disposed at the rear end of the first blower 1031.

[0037] Preferably, the heater 1032 has a higher heat conversion efficiency and a faster heating rate than traditional electric heaters, which can quickly raise the airflow to the preset temperature. The first blower 1031 blows air towards the first air inlet 1033, and the hot airflow rises along the upper tower 101, forming a countercurrent heat exchange with the falling grain. The grain preheating temperature is raised evenly. In addition, because the first air outlet 1034 is designed to be higher than the first air inlet 1033, the contact time between the hot airflow and the grain is extended, increasing the uniformity of grain preheating and avoiding uneven drying caused by local grain not being preheated.

[0038] Furthermore, the present invention also includes a drying component 200, which is the core drying unit of the entire grain drying tower, realizing constant heat drying of grain, hot air circulation and total heat recovery.

[0039] In this embodiment, the drying assembly 200 includes several stacked drying towers 201, a circulation box 202 disposed on each drying tower 201, and a circulating component 203 disposed in the circulation box 202. Each of the several drying towers 201 is provided with a feeding inlet 204 for feeding grain. The several drying towers 201 are stacked, and the upper tower 101 is disposed at the top of the several drying towers 201. The feeding inlet 204 is opened on the side wall of the drying tower 201. Under normal conditions, the feeding inlet 204 is normally closed. However, when inspection or special circumstances are required, the operator opens the feeding inlet 204 to handle or transport the grain.

[0040] Furthermore, each drying tower body 201 is provided with a through hole 104. A mounting partition 105 is provided between the drying tower bodies 201 and the drying tower body 201. The mounting partition 105 is bolted to the drying tower body 201. A feeding plate 106 is rotatably connected to the mounting partition 105. The feeding plate 106 corresponds to the mounting partition 105 and its size corresponds to the through hole 104. The feeding plate 106 is controlled to rotate by a motor 505. After rotation, it can block or expose the through hole 104 of the drying tower body 201. When the grain is being dried, it will be dried for the same amount of time in each drying tower body 201. After the time is up, the motor 505 drives the feeding plate 106 to rotate, the feeding plate 106 opens, and the grain falls from the through hole 104 into the drying tower body 201 below to continue the drying operation.

[0041] Preferably, a locking element is provided on the feeding plate 106. The locking element plays a sealing role to prevent the grain from leaking out from the gap between the feeding plate 106 and the through hole 104. In this embodiment, the locking element is a sealing ring provided on the feeding plate 106. Furthermore, a recess is formed at the lower end of the drying tower body 201.

[0042] The stacked design of multiple drying towers 201 enables layered drying of grain and extends the drying path; the feeding plate 106 can be adjusted to open and close through locking parts to control the grain conveying interval, ensuring that the grain is in full contact with the hot airflow and avoiding incomplete drying.

[0043] Preferably, a third air inlet 205 and a third air outlet 206 are provided on the side wall of each drying tower body 201, and the third air inlet 205 and the third air outlet 206 are located on the same side.

[0044] Furthermore, the present invention also includes a circulating component 203. In this embodiment, the circulating component 203 includes a circulating air duct 2031 disposed within the circulating housing 202, a dust collector 2032 disposed within the circulating air duct 2031, a pulse generator 2033 disposed on the dust collector 2032, a superconducting heat recovery unit 2034 disposed within the circulating air duct 2031, a condenser 2035 disposed within the circulating air duct 2031, and a superconducting heater 2036 disposed within the circulating air duct 2031. The upper end of the circulating air duct 2031 corresponds to the third air outlet 206 of the drying tower 201, and the lower end corresponds to the third air inlet 205. 2032, 2033, 2034, 2035, and 2036 are sequentially arranged at the upper end of the circulating air duct 2031. A water collection tray 2037 is provided at the lower end of the superconducting heat recovery unit 2034, condenser 2035, and superconducting heater 2036. The water collection tray 2037 is mainly used to collect the water formed by excessive condensation in the condenser 2035. The blower 2038 is arranged facing the third air inlet 205. The evaporator 2039, compressor 2040 and condenser 2035 are connected to the circulating refrigerant passage 2041. A circulating pump 2043 is provided between the evaporator 2039 and condenser 2035.

[0045] The circulating air duct 2031 and the drying tower 201 form a closed loop. The blower 2038 first blows hot air into the drying tower 201, and then the return air returns to the circulating air duct 2031 through the third air outlet 206. The return air first passes through the dust collector 2032, where most of the dust is filtered and collected. Then the humid air passes through the superconducting heat recovery unit 2034, the evaporator 2039, and the water condensation is discharged to the water collection pan 2037. The dehumidified air passes through the superconducting heater 2036 and the condenser 2035, where it is heated into dry hot air and continues to participate in the subsequent circulation.

[0046] The circulating air duct 2031 and the drying tower 201 form a closed loop, with the hot airflow circulating between the tower and the air duct. The superconducting heat recovery device 2034 recovers the heat from the drying exhaust gas. The dust collector 2032 works in conjunction with the pulse generator 2033, and the blower 400 periodically blows to clean the filter bag of the dust collector 2032 to prevent dust blockage. The superconducting heater 2036 and the condenser 2035 work together to maintain a stable temperature of the circulating airflow, achieving constant heat drying and preventing the quality of the grain from declining due to temperature fluctuations. The water collection tray 2037 collects condensate to prevent water backflow from affecting the drying effect. The condensate can be recycled for cleaning, saving water.

[0047] Furthermore, a plurality of jetting rods 2042 are provided on the pulse generator 2033, and the jetting rods 2042 extend into the dust collector 2032. A jetting component 400 is provided inside the dust collector 2032. In this embodiment, the jetting component 400 includes a first return air recovery pipe 401 provided inside the dust collector 2032, a second return air recovery pipe 402 provided inside the dust collector 2032, and a gas storage pipe 403 provided at the lower end of the second return air recovery pipe 402. The first return air recovery pipe 401 is connected to the second return air recovery pipe 402, and a ventilation pipe 404 is connected between the second return air recovery pipe 402 and the gas storage pipe 403. A recovery component is provided inside the dust collector 2032.

[0048] Furthermore, openings are provided at both ends of the gas storage pipe 403, and a jet pipe 405 is provided in the middle section of the gas storage pipe 403. A compression block 406 is slidably connected in the opening, and a pressure block 407 is slidably connected on the second return air recovery pipe 402.

[0049] Furthermore, a recovery component is installed inside the dust collector 2032 to drive the sliding movement of the compression block 406 and the lower pressing block 407. In this embodiment, the recovery component includes a rotating block 500 rotatably connected inside the dust collector 2032, a first swing rod 501 disposed on the rotating block 500, a second swing rod 502 rotatably connected inside the dust collector 2032, and a drive rod 503 hinged to the lower end of the second swing rod 502. The rotating block 500 is connected to the blowing rod via a bearing. On the 2042 support shaft, the rotating block 500 is integrally spindle-shaped, and both first swing rods 501 are hinged to both ends of the rotating block 500. The other end of each first swing rod 501 is hinged to the second swing rod 502. In the initial state, the first swing rod 501 is horizontal, while the second swing rod 502 is vertical. The lower end of each second swing rod 502 is hinged to the drive rod 503. The other end of the drive rod 503 is connected to the compression block 406, and the connection method is also hinged.

[0050] Preferably, the middle sections of the two second swing rods 502 are hinged on the same horizontal plane. A lower pressure rod 504 is also hinged to the rotating block 500. The hinge position of the lower pressure rod 504 is located near one of the first swing rods 501 on the rotating block 500. The lower end of the lower pressure rod 504 is hinged to the lower pressure block 407. When the rotating block 500 rotates, it will pull the two first swing rods 501 towards each other or push them away from each other, thereby causing the two second swing rods 502 to swing, thus lowering the pressure rod 501. The compression blocks 406 at the ends are pulled toward each other or away from each other. When the two compression blocks 406 move toward each other, they will compress the return air in the gas storage pipe 403, thereby increasing the pressure and temperature of the return air. At the same time, when the rotating block 500 rotates, it will continuously drive the lower pressure rod 504 to move up and down, thereby driving the lower pressure block 407 to move up and down. The upward movement of the lower pressure block 407 will draw the return air into the second return air recovery pipe 402, while the downward movement of the lower pressure block 407 will force the return air into the gas storage pipe 403.

[0051] Furthermore, a cathode plate 507 is provided on one of the compression blocks 406, and an anode plate 506 is provided on the other compression block 406. A circuit is provided between the anode plate 506 and the cathode plate 507, forming a connection loop between the cathode plate 507 and the anode plate 506, thereby forming a high-voltage electrostatic field. When the dust-laden gas passes through the high-voltage electrostatic field, it is electrically separated. After the dust particles combine with negative ions and become negatively charged, they tend to discharge and deposit on the surface of the anode plate 506.

[0052] When the return air is sent out from the third outlet 206, it enters the second flue gas recovery pipe through the first flue gas recovery pipe. The operator starts the motor 505, which drives the rotating block 500 to rotate. When the rotating block 500 rotates, it pushes the two first swing rods 501 away from each other, thereby driving the two second swing rods 502 to swing, which in turn pushes the lower compression block 406 towards each other. When the two compression blocks 406 move towards each other, they push the return air in the main compression pipe. When the rotating block 500 rotates, it continuously drives the lower pressure rod 504 to move up and down, thereby driving the lower pressure block 407 to move up and down. The upward movement of the lower pressure block 407 will draw steam into the second flue gas recovery pipe, and the downward movement of the lower pressure block 407 will force the steam into the gas storage pipe 403, thereby realizing pulse jet operation and thus realizing pulse dust removal.

[0053] Furthermore, the present invention also includes a cooling assembly 300, which is a finishing unit after drying, realizing grain cooling and waste heat recovery. In this embodiment, the cooling assembly 300 includes a bottom tower body 3001 disposed at the lower end of the drying tower body 201, a cooling box body 3002 disposed on the bottom tower body 3001, and a cooling component 301 inside the cooling box body 3002. A second air inlet 3003 and a second air outlet 3004 are provided on the bottom tower body 3001. The second air inlet 3003 is disposed at the end of the bottom tower body 3001 away from the cooling box body 3002, and the second air outlet 3004 is disposed at the end of the bottom tower body 3001 close to the cooling box body 3002. The position of the second air inlet 3003 is higher than the position of the second air outlet 3004.

[0054] In this embodiment, the cooling component 301 includes a second blower 3011 disposed in the cooling box 3002 and a heat recovery unit 3012 disposed in the cooling box 3002. The second blower 3011 and the heat recovery unit 3012 are connected in series, and the heat recovery unit 3012 is connected to the heater 1032 of the preheating component 100.

[0055] Furthermore, a partition plate 105 is also provided between the bottom tower body 3001 and the drying tower body 201. A receiving window is provided on the bottom tower body 3001, and the receiving window corresponds to the partition plate 105. When the discharge plate 106 on the partition plate 105 is opened, the grain falls into the bottom tower body 3001 through the receiving window.

[0056] The dried grain falls into the bottom tower 3001. The second blower 3011 draws in cold air, which is then blown onto the grain after the superconducting heat recovery device 2034 absorbs the residual heat of the grain. This maintains a stable cooling rate for the grain and prevents it from becoming damp and deteriorating due to natural cooling. The moisture content of the cooled grain remains stable within a safe range.

[0057] Furthermore, an online grain moisture monitoring module is installed at the discharge port of each drying tower. This module adopts a mature and standardized online measurement unit, which mainly includes a microwave moisture detection unit, a signal conditioning unit, and a data processing unit.

[0058] During the drying process, the grain is conveyed downward through the discharge port of the drying tower. The microwave humidity detection unit continuously emits microwave detection signals to the grain flowing through it. By utilizing the absorption and attenuation characteristics of moisture on microwave energy, the humidity response signal inside the grain is obtained non-contactly. After the signal is transmitted to the signal conditioning unit, it is processed by filtering, amplification, temperature drift compensation and noise suppression to convert the original analog signal into an electrical signal.

[0059] The data processing unit receives the conditioned signal and calculates the real-time moisture content of the grain based on the preset calibration curve and algorithm. This value is then transmitted to the control system of the drying tower in real time. The control system compares the real-time moisture content with the set target moisture content range. When the real-time moisture content is higher than the upper limit of the target range, the control system automatically increases the heating power of the superconducting heater 2036 and increases the circulating air volume to prolong the residence time of the grain in the drying tower and enhance the drying effect. When the real-time moisture content is lower than the lower limit of the target range, the control system reduces the heating power and decreases the circulating air volume to prevent the grain from becoming too dry or cracking. When the real-time moisture content is within the target range, the control system maintains stable operation of the current drying parameters.

[0060] The grain moisture online monitoring module continuously collects, processes, and feeds back signals throughout the process, forming a collaborative closed loop with the circulating component 203, the preheating component 100, and the cooling component 300, so that the moisture content of the discharged grain is always kept within a stable range, improving the uniformity of drying and the qualified rate of finished products.

[0061] Operation process: First, put the grain into the upper tower 101, start the preheating component 100, blow air with the first blower 1031, heat the airflow with the heater 1032, and the hot airflow enters the upper tower 101 along the first air inlet 1033 to exchange heat with the grain in a countercurrent manner. The grain is initially preheated to 30-40℃. After the temperature of the hot airflow drops to 35-45℃, it enters the drying component 200.

[0062] Preheated grain falls into the lower drying tower 201 through the through hole 104. The drying component 200 is activated, and the blower 2038 drives the hot airflow into the tower along the third air inlet 205 to dry the grain. The hot airflow carrying water vapor enters the circulating air duct 2031 from the third air outlet 206. After dust removal by the dust collector 2032 and cleaning of the filter bag by the pulse generator 2033, the heat is recovered by the superconducting heat recovery unit 2034, the condenser 2035 condenses and dehumidifies, and the superconducting heater 2036 heats up to the set temperature. The hot airflow re-enters the drying tower 201 to form a circulation. The heat in the exhaust gas is further recovered by the dust collector 2032 and the buffer tank in the centralized discharge pipe, improving thermal efficiency.

[0063] Finally, the dried grain falls into the bottom tower 3001. The cooling component 300 is activated, and the second blower 3011 draws in cold air. After the heat recovery unit 3012 absorbs the residual heat of the grain, the air is blown onto the grain, cooling it to room temperature. The recovered residual heat is transferred to the preheating component 100 to achieve full heat recovery. The cooled grain is discharged through the outlet of the bottom tower 3001, completing the drying process.

[0064] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. Any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended protection.

[0065] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0066] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower, characterized in that: include: The preheating assembly (100) includes an upper tower body (101), a box body (102) disposed on the upper tower body (101), and a preheating component (103) disposed in the box body (102). The drying assembly (200) includes a plurality of stacked drying towers (201), a circulation box (202) disposed on each drying tower (201), and a circulation component (203) disposed in the circulation box (202). Each of the drying towers (201) is provided with a feeding inlet (204) for feeding grain. The upper tower (101) is disposed at the top of the stacked drying towers (201). A cooling assembly (300) is provided at the lower end of a plurality of drying tower bodies (201), and a cooling component (301) is provided at the cooling assembly (300). The drying tower body (201) is equipped with an online humidity monitoring module at the discharge port. The online humidity monitoring module includes a microwave humidity detection unit, a signal conditioning unit, and a data processing unit.

2. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 1, characterized in that: The preheating component (103) includes a first blower (1031) disposed in the housing (102) and a heater (1032) disposed in the housing (102). The upper tower (101) is provided with a first air inlet (1033) and a first air outlet (1034). The first air inlet (1033) is located on the side of the upper tower (101) close to the housing (102), and the first air outlet (1034) is located on the side of the upper tower (101) away from the housing (102). The position of the first air outlet (1034) is higher than that of the first air inlet (1033). The first blower (1031) blows air toward the first air inlet (1033). The heater (1032) is disposed at the rear end of the first blower (1031).

3. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 2, characterized in that: The cooling assembly (300) includes a bottom tower (3001) disposed at the lower end of a plurality of drying towers (201) and a cooling box (3002) disposed on the bottom tower (3001). The bottom tower (3001) is provided with a second air inlet (3003) and a second air outlet (3004). The second air inlet (3003) is disposed at the end of the bottom tower (3001) away from the cooling box (3002), and the second air outlet (3004) is disposed at the end of the bottom tower (3001) close to the cooling box (3002). The position of the second air inlet (3003) is higher than the position of the second air outlet (3004). The cooling component (301) includes a second blower (3011) disposed in a cooling box (3002) and a heat recovery unit (3012) disposed in a cooling box (3002). The second blower (3011) is disposed toward the heat recovery unit (3012), and the heat recovery unit (3012) is connected to the heater (1032) through a pipeline.

4. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 1, characterized in that: Each of the drying tower bodies (201) is stacked on top of each other. A through hole (104) is provided on the drying tower body (201). An installation partition (105) is provided between the drying tower bodies (201). A feeding plate (106) is rotatably connected to the installation partition (105). A locking element is provided on the feeding plate (106). The lower end of the drying tower body (201) is recessed.

5. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 1, characterized in that: The drying tower body (201) has a third air inlet (205) and a third air outlet (206) on its side wall. The circulating component (203) includes a circulating air duct (2031) installed in the circulating box (202), a dust collector (2032) installed in the circulating air duct (2031), a pulse generator (2033) installed on the dust collector (2032), a superconducting heat recovery unit (2034) installed in the circulating air duct (2031), a condenser (2035) installed in the circulating air duct (2031), and a condenser installed in the circulating air duct (2031). The superconducting heater (2036) has an upper end of the circulating air duct (2031) corresponding to the third air outlet (206) and a lower end of the circulating air duct (2031) corresponding to the third air inlet (205). The dust collector (2032), pulse generator (2033), superconducting heat recovery unit (2034), condenser (2035) and superconducting heater (2036) are all located at the upper end of the circulating air duct (2031). A water collection tray (2037) is provided at the lower end of the superconducting heat recovery unit (2034), condenser (2035) and superconducting heater (2036).

6. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 5, characterized in that: A blower (2038) is provided at the lower end of the circulating air duct (2031), and an evaporator (2039) is provided at the rear end of the blower (2038). A compressor (2040) is provided inside the circulating housing (202). A circulating refrigerant passage (2041) is connected between the evaporator (2039), the compressor (2040) and the condenser (2035). A circulating pump (2043) is provided between the evaporator (2039) and the condenser (2035). The blower (2038) is positioned towards the third air inlet (205). The pulse generator (2033) is provided with a plurality of blow rods (2042), the blow rods (2042) extend into the dust collector (2032), and the pulse generator (2033) is provided with blow elements (400).

7. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 6, characterized in that: The jetting component (400) includes a first return air recovery pipe (401) disposed in the dust collector (2032), a second return air recovery pipe (402) disposed in the dust collector (2032), and a gas storage pipe (403) disposed at the lower end of the second return air recovery pipe (402). A ventilation pipe (404) is connected between the second return air recovery pipe (402) and the gas storage pipe (403). A recovery component is disposed in the dust collector (2032), and the first return air recovery pipe (401) and the second return air recovery pipe (402) are connected.

8. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 7, characterized in that: The gas storage tube (403) has openings at both ends, and a jet pipe (405) is provided in the middle section of the gas storage tube (403). The jet pipe (405) is connected to the blow rod (2042). A compression block (406) is slidably connected inside the opening. A pressure block (407) is slidably connected on the second return air recovery tube (402). The recovery component controls the sliding of the compression block (406) and the pressure block (407).

9. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 8, characterized in that: The recycling component includes a rotating block (500) rotatably connected within the dust collector (2032), a first swing rod (501) mounted on the rotating block (500), a second swing rod (502) rotatably connected within the dust collector (2032), and a drive rod (503) hinged to the lower end of the second swing rod (502). The first swing rod (501) is hinged to the upper end of the second swing rod (502). Two of each of the first swing rod (501), the second swing rod (502), and the drive rod (503) are provided. There are two compression blocks (406) respectively. The drive rod (503) is hinged to the end of the compression block (406). The rotating block (500) is hinged to a lower pressure rod (504) near one of the first swing rods (501). The lower end of the lower pressure rod (504) is hinged to the lower pressure block (407). The rotating block (500) is provided with a motor (505) that drives the first swing rod (501) to rotate. The first swing rod (501) and the second swing rod (502) are both eccentrically hinged to the rotating block (500).

10. The humidity monitoring system for a constant-heat circulation total heat recovery grain drying tower as described in claim 3, characterized in that: A partition plate (105) is also provided between the bottom tower body (3001) and the drying tower body (201), and the bottom tower body (3001) has a material receiving window.

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