Full-automatic graphene far infrared grain drying equipment

Abstract

The application discloses a kind of full-automatic graphene far infrared grain drying equipment, including high-strength modular heat preservation machine shell, multistage staggered type slow drying conveying system, high-power graphene far infrared radiation heating unit and intelligent negative pressure moisture removal assembly.Machine shell adopts double-layer galvanized steel plate and fireproof rock wool heat insulation structure, built-in Z-shaped high-temperature-resistant silica gel conveyor belt prolongs drying path;Graphene heating unit emits far infrared rays matching the absorption band of water molecules, achieving efficient penetration heating;Top negative pressure moisture removal system quickly discharges moisture;PLC intelligent control system integrates human-computer interaction terminal, enabling full-automatic operation.The whole machine is also equipped with quick-opening maintenance door and self-locking universal wheel set.The application has the advantages of high thermal efficiency, uniform drying, low broken grain rate, energy-saving intelligence, and convenient movement.

Description

Technical Field

[0001] This invention relates to the field of grain drying equipment technology, specifically to a fully automatic graphene far-infrared grain drying equipment. Background Technology

[0002] In the post-harvest processing of grain, drying is a crucial step in ensuring safe storage and preventing mold and quality deterioration. Traditional grain drying equipment mostly uses hot air convection or coal / electric heating, which suffers from low thermal efficiency, high energy consumption, and uneven drying. Especially in high-humidity environments, hot air struggles to effectively penetrate the grain layer, resulting in an overly dry surface while internal moisture remains. This not only affects drying quality but also easily causes mechanical damage such as grain cracking and splitting, reducing its commercial value. Furthermore, existing equipment generally lacks an efficient dehumidification system, causing hot and humid air to stagnate in the drying chamber, further weakening heat exchange efficiency and prolonging the drying cycle.

[0003] Meanwhile, most traditional dryers have rudimentary insulation structures, often using single-layer steel plates or ordinary rock wool filling, resulting in poor insulation performance and significant heat loss. This increases energy consumption and affects the safety of the working environment. The equipment is mostly fixed in design, making it inconvenient to move and difficult to adapt to different work sites. Maintenance and repair usually require disassembling multiple bolts or panels, making operation cumbersome and affecting efficiency. Regarding the control system, most equipment still relies on manual adjustment or simple temperature control, unable to dynamically adjust drying parameters according to grain type, moisture content, and environmental conditions. This results in low levels of intelligence, making it difficult to achieve precise, stable, and fully automatic operation.

[0004] In recent years, although some equipment has attempted to incorporate infrared heating technology, most of it uses carbon tubes or metal heating elements, which suffer from drawbacks such as slow heating, mismatched radiation wavelengths, and short lifespans, failing to fully leverage the advantages of infrared drying. Graphene, as a novel nanomaterial, possesses excellent thermal conductivity and far-infrared emission properties, and its radiation wavelength better matches the resonant absorption frequency band of water molecules. Theoretically, it can significantly improve drying efficiency and quality. However, its application in the grain drying field is still in its early stages, and a mature, integrated, modular, and intelligent equipment system has not yet been formed.

[0005] Therefore, there is an urgent need for a new type of grain drying equipment with a reasonable structure, high thermal efficiency, strong dehumidification, intelligent control, and easy maintenance and mobility, in order to overcome the shortcomings of existing technologies in terms of energy efficiency, uniformity, automation, and applicability. Summary of the Invention

[0006] I. Technical problems to be solved The technical problem to be solved by the present invention is the various problems mentioned in the background art above, and a fully automatic graphene far-infrared grain drying equipment is provided.

[0007] II. Technical Solution To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a fully automatic graphene far-infrared grain drying equipment, characterized in that: it includes a high-strength modular insulated shell, the high-strength modular insulated shell adopts a double-layer galvanized steel plate interlocking splicing structure, the space between the two steel plates is filled with high-density fireproof rock wool as a heat insulation layer, and a reinforced square tube column frame is vertically embedded inside the interlayer, the interior of the high-strength modular insulated shell forms a sealed constant temperature drying chamber, and the upper front end of the high-strength modular insulated shell has an automatic feeding channel communicating with the constant temperature drying chamber. The machine is equipped with an adjustable-speed feeding conveyor platform. The lower rear end of the high-strength modular insulated casing has a clean discharge channel that connects to the constant-temperature drying chamber. The clean discharge channel is equipped with a shatterproof discharge conveyor belt. The inner walls of the constant-temperature drying chamber are integrated with multiple sets of high-power graphene far-infrared radiation heating units. The constant-temperature drying chamber is equipped with a multi-stage staggered slow-speed drying conveyor system that runs through the feeding and discharging channels. The top of the constant-temperature drying chamber is equipped with an intelligent negative pressure dehumidification assembly. The bottom four corners of the high-strength modular insulated casing are symmetrically equipped with heavy-duty universal wheels with self-locking function.

[0008] As an improvement, the multi-stage staggered slow drying conveyor system includes several sets of drive rollers arranged in a Z-shape and a high-temperature resistant silicone drying conveyor belt. The drive rollers are horizontally supported by bearing seats on the side wall of the constant temperature drying chamber. Adjacent rollers are staggered in the vertical direction, and each pair of adjacent drive rollers is tensioned and connected by a section of high-temperature resistant silicone drying conveyor belt.

[0009] As an improvement, the intelligent negative pressure dehumidification assembly includes multiple air-cooled high-speed dehumidification fans, a top air collection hood, a main dehumidification duct, and multiple external dehumidification vents. The multiple air-cooled high-speed dehumidification fans are fixed to the inner wall of the top of the constant temperature drying chamber by an array of stainless steel brackets. The top air collection hood covers the air inlet of the fans. One end of the main dehumidification duct is sealed to the air outlet of the fans, and the other end is branched to multiple external dehumidification vents set on the top of the high-strength modular heat-insulated casing.

[0010] As an improvement, the front outer wall of the high-strength modular heat-insulating shell integrates a human-machine interactive intelligent control terminal. The human-machine interactive intelligent control terminal has a built-in PLC control system and establishes an electrical connection with the graphene far-infrared radiation heating unit, the multi-level staggered slow drying and conveying system, and the intelligent negative pressure dehumidification assembly.

[0011] As an improvement, a quick-opening maintenance and inspection door is provided on one side of the high-strength modular insulation housing below the automatic feeding channel. The quick-opening maintenance and inspection door is rotatably connected to the housing via heavy-duty hinges. The surface of the quick-opening maintenance and inspection door is provided with multiple positioning holes, and a safety locking pin is inserted into the positioning holes. An anti-slip grip handle is fixedly installed on the outside of the quick-opening maintenance and inspection door.

[0012] III. Beneficial Effects The advantages of this invention compared to the prior art are: 1. This fully automatic graphene far-infrared grain drying equipment adopts a high-strength modular heat-insulating shell structure, combined with double-layer galvanized steel plates, high-density fireproof rock wool insulation layer, and internal reinforced square tube column frame, which effectively improves the heat preservation performance, structural strength and fire safety of the whole machine; its internal multi-stage staggered slow-speed drying conveyor system uses Z-shaped staggered high-temperature resistant silicone conveyor belts to extend the residence time of grain in the constant temperature drying chamber, so as to achieve uniform, efficient and low-loss drying. 2. Meanwhile, the high-power graphene far-infrared radiation heating unit can quickly heat up and penetrate deep into the grain for heat conduction, improving drying efficiency while preserving grain quality; the intelligent negative pressure dehumidification assembly, through the coordinated action of multiple air-cooled high-speed dehumidification fans, the top air collection hood, and the main dehumidification duct, promptly removes moisture and maintains a stable drying environment; the whole machine integrates a PLC human-machine interaction control system to realize intelligent control of the entire drying process, and is equipped with a quick-opening maintenance and inspection door and a set of heavy-duty universal wheels with self-locking, taking into account both ease of operation and mobility. Attached Figure Description

[0013] Figure 1 This invention relates to a fully automatic graphene far-infrared grain drying equipment (three-dimensional). Figure 1 .

[0014] Figure 2 This invention relates to a fully automatic graphene far-infrared grain drying equipment (three-dimensional). Figure 2 .

[0015] Figure 3 This invention relates to a fully automatic graphene far-infrared grain drying equipment (three-dimensional). Figure 3 .

[0016] Figure 4 This is a cross-sectional view of a fully automatic graphene far-infrared grain drying device according to the present invention.

[0017] As shown in the figure: 1. High-strength modular insulated casing; 2. Double-layer galvanized steel plate; 4. Reinforced square tube column frame; 5. Constant temperature drying chamber; 6. Automatic feeding channel; 7. Adjustable speed feeding conveyor platform; 8. Clean discharge channel; 9. Shatterproof discharge conveyor belt; 10. High-power graphene far-infrared radiation heating unit; 11. Anti-slip grip handle; 12. Drive roller; 13. High-temperature resistant silicone drying conveyor belt; 14. Safety locking pin; 15. Positioning socket; 16. Air-cooled high-speed dehumidification fan; 17. Top air collection hood; 18. Main dehumidification duct; 19. External dehumidification outlet; 20. Stainless steel bracket; 21. Heavy-duty universal wheel set; 22. Human-machine interactive intelligent control terminal; 23. Quick-opening maintenance and inspection door. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 — Figure 4 As shown, a fully automatic graphene far-infrared grain drying device is described. The main body of the device adopts a high-strength modular insulated shell 1, which is composed of two layers of galvanized steel plates connected by an interlocking splicing process to form an overall frame. The interlayer between the two steel plates is uniformly filled with high-density fireproof rock wool as heat insulation material, and multiple reinforced square tube column frames 4 are embedded vertically inside the interlayer to enhance the overall rigidity and deformation resistance. An automatic feeding channel 6 is opened at the upper front of the shell, and a clean discharge channel 8 is set at the lower rear. Heavy-duty universal wheels 21 with self-locking function are symmetrically installed at the four corners of the bottom.

[0020] This structure not only significantly improves the overall thermal insulation performance and fire safety of the machine, but also enhances the structural stability and mobility of the equipment, making it easy to quickly deploy and fix in different work sites.

[0021] like Figure 1 — Figure 4 As shown, a multi-stage staggered slow-speed drying conveyor system is installed inside the constant temperature drying chamber 5, running through the feeding and discharging channels. This system consists of several sets of drive rollers 12 and a high-temperature resistant silicone drying conveyor belt 13. The drive rollers 12 are horizontally supported on the inner walls of both sides of the chamber by bearing seats. Adjacent rollers are arranged in a staggered pattern in the vertical direction, forming a Z-shaped path. A section of the high-temperature resistant silicone drying conveyor belt 13 is tensioned and connected between every two sets of adjacent rollers. During the conveying process, the grain falls gradually and moves forward slowly.

[0022] This structure effectively extends the residence time of grain in the drying chamber, enabling multi-stage, slow, and tumbling conveying, ensuring uniform heating and gradient moisture release, significantly reducing grain breakage and improving drying consistency.

[0023] like Figure 1 — Figure 4 As shown, multiple sets of high-power graphene far-infrared radiation heating units 10 are integrated around the inner walls of the constant temperature drying chamber 5 (including the side walls, top wall, and part of the bottom wall area). These units use flexible graphene electrothermal films or graphene-coated heating plates, and can efficiently emit far-infrared rays with wavelengths of 5–15 μm after being powered on. This wavelength band is highly matched with the resonance absorption peak of water molecules. The heating units are firmly installed by brackets and electrically connected to the PLC control system, allowing for independent temperature control in different zones.

[0024] This structure utilizes graphene's excellent thermal conductivity and broadband far-infrared radiation characteristics to achieve penetrating heating from the inside out, improving thermal efficiency, shortening drying time, and avoiding quality deterioration caused by surface overheating.

[0025] like Figure 1 — Figure 4 As shown, an intelligent negative pressure dehumidification assembly is configured on the top of the constant temperature drying chamber 5, including multiple air-cooled high-speed dehumidification fans 16, a top air collection hood 17, a main dehumidification duct 18, and multiple external dehumidification vents 19. The fans are fixed to the inner wall of the top in an array by stainless steel brackets 20, and the air collection hood covers the air inlet to collect humid and hot air evenly; the air outlet is sealed and connected to the main dehumidification duct 18, and the end of the duct is branched to multiple external dehumidification vents 19 set on the top of the casing to achieve directional and efficient dehumidification.

[0026] This structure establishes a stable negative pressure environment, accelerates moisture removal, prevents condensation and re-moistening, and maintains a low humidity and constant temperature in the drying chamber, thereby ensuring continuous and efficient drying operations.

[0027] like Figure 1 — Figure 4 As shown, a human-machine interface intelligent control terminal 22 is integrated on the front outer wall of the casing. It has a built-in PLC control system and is electrically connected to core components such as the graphene heating unit, conveying system, and dehumidifying fan. It can monitor parameters such as temperature, humidity, and conveying speed in real time and supports automatic mode switching and fault alarms. Meanwhile, a quick-opening maintenance and inspection door 23 is installed on one side below the automatic feeding channel 6. This door is rotatably connected to the casing via heavy-duty hinges. The door surface has multiple positioning holes 15, with safety locking pins 14 inserted to ensure safe operation. An anti-slip grip handle 11 is provided on the outside.

[0028] This structure enables intelligent control throughout the entire process and one-click rapid maintenance, significantly improving ease of operation, safety, and equipment maintainability.

[0029] The working principle of this fully automatic graphene far-infrared grain drying equipment is as follows: Grain enters through the automatic feeding channel 6 at the top front of the equipment and is conveyed into the constant temperature drying chamber 5 by the adjustable speed feeding conveyor platform 7. Upon entry, the grain is guided into a multi-stage staggered slow-speed drying conveyor system—this system consists of Z-shaped staggered drive rollers 12 and a high-temperature resistant silicone drying conveyor belt 13, causing the grain material to fall vertically in stages and move slowly horizontally, forming a continuous, tumbling, and delayed conveying path. During this process, high-power graphene far-infrared radiation heating units 10, arranged around the walls of the drying chamber, are powered on and emit far-infrared rays with a wavelength of 5–15 μm. This wavelength highly matches the resonance absorption peak of water molecules, enabling it to penetrate the surface of the grain and stimulate the vibration of internal water molecules to generate heat, achieving efficient and uniform heating from the inside out, avoiding the "burnt outside, damp inside" phenomenon caused by traditional hot air drying.

[0030] Simultaneously, the intelligent negative pressure dehumidification assembly starts up: multiple air-cooled high-speed dehumidification fans 16 installed on the top draw in hot and humid air from the drying chamber through the air collector hood, and guide it through the main dehumidification duct 18 to multiple external dehumidification vents 19 on the top of the casing, forming a stable negative pressure environment, effectively reducing the relative humidity inside the chamber, accelerating moisture evaporation and migration, and preventing moisture retention or condensation. The entire drying process is controlled in real time by the PLC control system in the front human-machine interactive intelligent control terminal 22—the system automatically adjusts the power zone output of the graphene heating unit, the conveyor belt speed, and the dehumidification fan speed according to the preset grain type, initial moisture content, and environmental parameters, achieving precise temperature and humidity coordinated control.

[0031] After drying, the grain is smoothly conveyed out through the clean discharge channel 8 at the rear end by the anti-breakage discharge conveyor belt 9, operating in a fully enclosed manner to avoid secondary contamination. Heavy-duty omnidirectional wheels 21 at the bottom of the equipment support flexible movement of the entire machine, while quick-opening maintenance and inspection doors 23 facilitate daily cleaning and component replacement. In summary, this equipment achieves high efficiency, energy saving, low loss, and intelligent grain drying through the synergistic effect of four core technologies: graphene far-infrared radiation heating, multi-stage slow conveying, intelligent negative pressure dehumidification, and fully automatic control.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully automatic graphene far-infrared grain drying device, characterized in that: The high-strength modular heat-insulating shell (1) is constructed by interlocking two layers of galvanized steel plates (2). High-density fireproof rock wool is filled between the two layers of steel plates as a heat insulation layer. A reinforced square tube column frame (4) is vertically embedded inside the interlayer. A closed constant temperature drying chamber (5) is formed inside the high-strength modular heat-insulating shell (1). An automatic feeding channel (6) connected to the constant temperature drying chamber (5) is opened at the upper front end of the high-strength modular heat-insulating shell (1). An adjustable speed feeding conveyor platform (7) is embedded in the automatic feeding channel (6). The high-strength modular heat-insulating shell (1) has a clean discharge channel (8) connected to the constant temperature drying chamber (5) at the lower rear end. The clean discharge channel (8) is equipped with a shatterproof discharge conveyor belt (9). The inner wall of the constant temperature drying chamber (5) is integrated with multiple sets of high-power graphene far-infrared radiation heating units (10). The constant temperature drying chamber (5) is equipped with a multi-level staggered slow drying conveyor system that runs through the feeding channel and the discharge channel. The top of the constant temperature drying chamber (5) is equipped with an intelligent negative pressure dehumidification assembly. The bottom corners of the high-strength modular heat-insulating shell (1) are symmetrically equipped with heavy-duty universal walking wheels (21) with self-locking function.

2. The fully automatic graphene far-infrared grain drying equipment according to claim 1, characterized in that: The multi-stage staggered slow drying conveyor system includes several sets of drive rollers (12) arranged in a Z-shape and a high-temperature resistant silicone drying conveyor belt (13). The drive rollers (12) are horizontally rotated and supported on the inner wall of the constant temperature drying chamber (5) by bearing seats. Adjacent rollers are staggered in the vertical direction. Each pair of adjacent drive rollers (12) is tensioned and connected by a section of high-temperature resistant silicone drying conveyor belt (13).

3. The fully automatic graphene far-infrared grain drying equipment according to claim 1, characterized in that: The intelligent negative pressure dehumidification assembly includes multiple air-cooled high-speed dehumidification fans (16), a top air collection hood (17), a main dehumidification duct (18), and multiple external dehumidification vents (19). The multiple air-cooled high-speed dehumidification fans (16) are fixed in an array on the top inner wall of the constant temperature drying chamber (5) by stainless steel brackets (20). The top air collection hood (17) covers the air inlet of the fans. One end of the main dehumidification duct (18) is sealed to the air outlet of the fans, and the other end is branched to multiple external dehumidification vents (19) set on the top of the high-strength modular heat-insulating shell (1).

4. The fully automatic graphene far-infrared grain drying equipment according to claim 1, characterized in that: The high-strength modular heat-insulating shell (1) integrates a human-machine interactive intelligent control terminal (22) on the front outer wall. The human-machine interactive intelligent control terminal (22) has a built-in PLC control system and establishes an electrical connection with the graphene far-infrared radiation heating unit, the multi-level staggered slow drying and conveying system and the intelligent negative pressure dehumidification assembly.

5. The fully automatic graphene far-infrared grain drying equipment according to claim 1, characterized in that: The high-strength modular heat-insulating casing (1) has a quick-opening maintenance and inspection door (23) located below the automatic feeding channel (6) on one side. The quick-opening maintenance and inspection door (23) is rotatably connected to the casing by a heavy-duty hinge. The surface of the quick-opening maintenance and inspection door (23) is provided with multiple positioning holes (15). A safety locking pin (14) is inserted into the positioning hole (15). An anti-slip grip handle (11) is fixedly installed on the outside of the quick-opening maintenance and inspection door (23).

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