Intelligent conveying device for agricultural product drying processing
Through the multi-module design of the intelligent conveying device and the differentiated cleaning mechanism, the problems of material adhesion and breakage are solved, achieving efficient cleaning and quality assurance in the agricultural product drying process, and meeting food safety requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- YANCHENG WEIGUAN FOOD CO LTD
- Filing Date
- 2026-04-10
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional single-layer long mesh belt dryers cause materials to stick together during the drying process of agricultural products, while multi-layer mesh belts can cause materials to break or fly away, affecting the appearance of the finished product and food safety.
Design an intelligent conveying device comprising multiple conveying modules and differentiated cleaning mechanisms. It achieves flipping through the natural fall of materials, and combines a support frame and eccentric rollers to adjust the fall height. Equipped with spray, roller brush and negative pressure cleaning mechanisms, it realizes online cleaning throughout the entire process, and achieves closed-loop control through moisture detection and control modules.
It effectively prevents materials from sticking together and breaking, ensures the quality of finished products, meets food hygiene standards, reduces energy consumption, and improves material utilization.
Smart Images
Figure CN122107758A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of intelligent conveying devices, and in particular to an intelligent conveying device for drying and processing agricultural products. Background Technology
[0002] In the dehydration and drying of agricultural products, belt dryers are widely used due to their strong continuous operation capability and wide range of applications.
[0003] However, in traditional single-layer long mesh belt dryers, materials are in prolonged contact with the mesh belt surface during the drying process. In the initial drying stage, materials with high moisture content and rich in sugar or starch easily stick to the mesh belt. As drying progresses, these adhered materials gradually solidify, becoming difficult to clean. This not only affects the appearance and quality of the finished product but also fosters bacterial growth, posing a serious threat to food safety. While multi-layer mesh belts can achieve material tumbling through interlayer transfer, the large drop height causes leafy vegetables, berries, or partially dried brittle materials to break or fly away, resulting in material loss.
[0004] Based on the above-mentioned technical problems, this application proposes an intelligent conveying device for agricultural product drying and processing. Summary of the Invention
[0005] The purpose of this invention is to provide an intelligent conveying device for drying and processing agricultural products, so as to solve the technical problems mentioned in the background art. This purpose is achieved through the following technical solutions: An intelligent conveying device for drying and processing agricultural products is installed inside a drying chamber. Along the material conveying direction, the drying chamber is divided into a preheating zone, a drying zone, and a cooling zone. The conveying device includes multiple conveying modules arranged sequentially along the material conveying direction, with the discharge end of the preceding conveying module higher than the inlet end of the following conveying module. Each conveying module includes a conveying frame. The inlet end of the conveying frame is equipped with a drive roller connected to a drive motor installed on the outer wall of the drying chamber. The discharge end of the conveying frame is equipped with a driven roller and a tension roller. A conveyor belt is wound between the drive roller, driven roller, and tension roller. The return section of the conveyor belt in the preheating zone is equipped with a spray cleaning mechanism, the return section of the conveyor belt in the drying zone is equipped with a roller brush cleaning mechanism, and the return section of the conveyor belt in the cooling zone is equipped with a negative pressure cleaning mechanism.
[0006] Furthermore, the conveyor belt is equipped with a support frame inside. One end of the support frame near the drive roller is rotatably connected to the conveyor frame via a rotating shaft. The driven roller is rotatably installed at the other end of the support frame. An eccentric roller is installed on the conveyor frame. The lower end face of the support frame abuts against the eccentric roller. The eccentric roller is connected to an adjusting motor installed on the outer wall of the drying chamber.
[0007] Furthermore, the discharge end of the conveying module is equipped with a scraper, which is located below the driven roller and abuts against the conveyor belt at the driven roller.
[0008] Furthermore, the spray cleaning mechanism includes a spray pipe installed on the upper side of the return section of the conveyor belt, and a number of nozzles are provided on the spray pipe, with the nozzles facing the conveyor belt.
[0009] Furthermore, the spray pipes are connected to a high-pressure steam source via a solenoid valve.
[0010] Furthermore, the roller brush cleaning mechanism includes a roller brush, which is installed on the underside of the return section of the conveyor belt, abuts against the conveyor belt, and is connected to a roller brush motor installed on the outer wall of the drying chamber.
[0011] Furthermore, the negative pressure cleaning mechanism includes a negative pressure pipe located on the underside of the return section of the conveyor belt, with a suction port on the negative pressure pipe facing the conveyor belt.
[0012] Furthermore, the negative pressure pipeline is equipped with bristles, which are arranged along the outer periphery of the suction port and abut against the conveyor belt.
[0013] Furthermore, it also includes a moisture detection module, which is installed at the discharge end of each conveying module.
[0014] Furthermore, it also includes a control module, with each conveying module electrically connected to the control module. The control module is used to independently adjust the conveying speed of each conveying module.
[0015] The technical solutions provided in this application have at least the following technical effects or advantages: 1. By setting up multiple conveying modules, with the discharge end of the previous conveying module higher than the feed end of the next conveying module, the material falls naturally between the various conveying modules to achieve flipping, avoiding prolonged contact between the same side of the material and the conveyor belt, thus preventing adhesion and ensuring the appearance and quality of the finished product. 2. By setting up a support frame, eccentric roller and adjusting motor, the height of one end of the driven roller can be dynamically adjusted, thereby adjusting the drop height of the material according to the type of material. This not only achieves effective material turning, but also avoids the scattering of leafy vegetables or the breakage of brittle ingredients, significantly reducing material loss. 3. By setting up spray cleaning mechanism, roller brush cleaning mechanism and negative pressure cleaning mechanism in preheating zone, drying zone and cooling zone respectively, the entire process is online synchronously cleaned according to the characteristics of materials at different stages, without the need for manual cleaning by stopping the machine, which fundamentally solves the problem of bacteria growth on the mesh belt residue and meets food hygiene and safety standards; 4. By electrically connecting each conveying module to the control module, independent speed regulation is achieved. Combined with the moisture detection module installed at the discharge end of each conveying module, a closed-loop control is formed. The conveying speed of each module can be automatically adjusted according to the real-time changes in the moisture content of the material, effectively reducing unit energy consumption while ensuring that the moisture content of the discharged material accurately meets the standards. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the intelligent conveying device structure according to an embodiment of this application; Figure 2 This is a schematic diagram of the conveying module structure in an embodiment of this application; Figure 3 This is a cross-sectional view of the conveying module structure according to an embodiment of this application; Figure 4 This is a schematic diagram of the spray cleaning mechanism in an embodiment of this application; Figure 5 This is a schematic diagram of the roller brush cleaning mechanism in an embodiment of this application; Figure 6 This is a schematic diagram of the negative pressure cleaning mechanism in an embodiment of this application.
[0018] Reference numerals: 1. Conveying module; 11. Conveying frame; 12. Driving roller; 13. Drive motor; 14. Driven roller; 15. Tensioning roller; 16. Conveying mesh belt; 17. Rotating shaft; 18. Support frame; 2. Spray cleaning mechanism; 21. Spray pipe; 22. Nozzle; 3. Roller brush cleaning mechanism; 31. Roller brush; 32. Roller brush motor; 4. Negative pressure cleaning mechanism; 41. Negative pressure pipe; 42. Brush bristles; 5. Eccentric roller; 51. Adjusting motor; 6. Scraper. Detailed Implementation
[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.
[0020] like Figure 1-3The diagram shows an intelligent conveying device for drying and processing agricultural products, installed inside a drying chamber. Along the material conveying direction, the internal space of the drying chamber is sequentially divided into a preheating zone, a drying zone, and a cooling zone. The conveying device includes multiple conveying modules 1, which are arranged sequentially along the material conveying direction. The discharge end of the preceding conveying module 1 is vertically higher than the inlet end of the following conveying module 1, creating a height difference.
[0021] like Figure 2 , Figure 3 As shown, each conveying module 1 includes two parallel conveyor frames 11. A drive roller 12 is rotatably mounted at the feed end of each conveyor frame 11, and the drive roller 12 is connected to a drive motor 13 mounted on the outer wall of the drying chamber via a coupling. A driven roller 14 and a tension roller 15 are rotatably mounted at the discharge end of each conveyor frame 11. A conveyor belt 16 is wound between the drive roller 12, driven roller 14, and tension roller 15. The tension roller 15 is used to adjust the tension of the conveyor belt 16 to ensure smooth operation of the conveyor belt 16.
[0022] Among them, the return section (i.e., the lower empty mesh belt section) of the conveyor belt 16 of the conveyor module 1 located in the preheating zone is equipped with a spray cleaning mechanism 2; the return section of the conveyor belt of the conveyor module 1 located in the drying zone is equipped with a roller brush cleaning mechanism 3; and the return section of the conveyor belt of the conveyor module 1 located in the cooling zone is equipped with a negative pressure cleaning mechanism 4.
[0023] This embodiment uses multiple conveying modules 1, with the discharge end of the preceding conveying module higher than the infeed end of the following conveying module. This allows the material to fall naturally between adjacent modules, achieving a flipping effect and preventing the material from sticking together due to prolonged contact between the same side and the conveyor belt. Simultaneously, differentiated cleaning mechanisms are configured according to the material characteristics of different drying zones, enabling online cleaning throughout the entire process.
[0024] As a preferred embodiment of this application, such as Figure 2 , Figure 3 As shown, a support frame 18 is provided inside the conveyor belt 16 to support the conveying surface of the conveyor belt 16. One end of the support frame 18 near the drive roller 12 is rotatably connected to the conveyor frame 11 via a rotating shaft 17, and the driven roller 14 is rotatably mounted on the other end of the support frame 18. An eccentric roller 5 is provided on the conveyor frame 11, and the lower end face of the support frame 18 abuts against the outer peripheral surface of the eccentric roller 5. The eccentric roller 5 is connected to an adjusting motor 51 installed on the outer wall of the drying chamber.
[0025] During operation, the adjusting motor 51 drives the eccentric roller 5 to rotate. Because the outer contour of the eccentric roller 5 is non-circular, the height of its contact point with the support frame 18 changes, thus pushing the support frame 18 to swing up and down around the rotating shaft 17. This, in turn, changes the height of one end of the driven roller 14, causing the inclination angle of the conveyor belt at the discharge end to change, achieving precise adjustment of the material drop height. For leafy vegetables or brittle materials, the adjusting motor 51 drives the eccentric roller 5 to rotate to a smaller eccentric position, reducing the drop height and preventing material scattering or breakage. For root vegetables or materials with better toughness, the drop height can be appropriately increased to enhance the tumbling effect.
[0026] As a preferred embodiment of this application, such as Figure 3 As shown, the discharge end of the conveying module 1 is provided with a scraper 6. The scraper 6 is installed on the lower side of the driven roller 14 through a rotating shaft, and the scraper 6 abuts against the surface of the conveyor belt 16 at the driven roller 14.
[0027] Scraper 6 is made of food-grade polyurethane material, and its cutting edge is in contact with the surface of the conveyor belt. When the conveyor belt runs to the discharge end, the scraper removes any residual material that may be stuck to the surface of the belt, preventing the material from flowing back to the feed end with the return section of the belt, thus avoiding cross-contamination and material waste.
[0028] As a preferred embodiment of this application, such as Figure 4 As shown, the spray cleaning mechanism 2 includes a spray pipe 21, which is arranged along the width direction of the conveyor belt 16 and installed on the upper side of the return section of the conveyor belt 16. A plurality of nozzles 22 are evenly installed along the length direction of the spray pipe 21, with the outlets of the nozzles 22 facing the conveyor belt 16. The spray pipe 21 is connected to a high-pressure steam source via a solenoid valve.
[0029] When the conveyor belt 16 reaches the return section of the preheating zone, the solenoid valve opens, and high-pressure steam is sprayed from the nozzle 22 through the spray pipe 21 onto the surface of the conveyor belt 16. The high-pressure steam, with its high temperature and impact force, softens and washes away the initial starch, sugar, and other residues adhering to the surface of the conveyor belt. Furthermore, the steam creates a slight positive pressure inside the drying chamber, effectively preventing the entry of cold external air and reducing heat loss. An isolation plate is fixed to the lower end of the support frame 18 to prevent the sprayed high-pressure steam from passing through the conveyor belt and affecting the drying of the material. A collection tray is also installed at the lower end of the conveyor belt 16 to receive moisture and impurities generated during spraying, keeping the workshop floor clean.
[0030] As a preferred embodiment of this application, such as Figure 5 As shown, the roller brush cleaning mechanism 3 includes a roller brush 31, which is installed on the underside of the return section of the conveyor belt 16, with the bristles of the roller brush 31 abutting against the surface of the conveyor belt 16. The rotating shaft of the roller brush 31 is connected to a roller brush motor 32 installed on the outer wall of the drying chamber via a coupling.
[0031] To further improve the cleaning effect, this embodiment adopts a double roller brush structure. Two roller brushes 31 are respectively installed on the upper and lower sides of the return section of the conveyor belt 16 and rotate in opposite directions to achieve double-sided brushing of the conveyor belt 16, effectively removing the residues that have partially dried but are still attached to the surface of the conveyor belt.
[0032] As a preferred embodiment of this application, such as Figure 6 As shown, the negative pressure cleaning mechanism 4 includes a negative pressure pipe 41, which is arranged along the width of the conveyor belt 16 and installed on the underside of the return section of the conveyor belt 16. A suction port is provided on the negative pressure pipe 41, facing the conveyor belt 16. The negative pressure pipe 41 is connected to an external negative pressure fan or vacuum system via a pipeline.
[0033] To further improve the cleaning effect, bristles 42 are installed on the negative pressure pipe 41. The bristles 42 are arranged along the outer periphery of the suction port and abut against the surface of the conveyor belt 16. During operation, the bristles 42 first loosen the dried and brittle residual debris from the surface of the conveyor belt 16. Then, the negative pressure generated by the negative pressure fan draws the debris into the negative pressure pipe 41 through the suction port and discharges it, achieving efficient dust removal and avoiding secondary contamination of materials by dust.
[0034] In a preferred embodiment of this application, each conveying module 1 is equipped with a moisture detection module (not shown) and a control module at its discharge end. The moisture detection module uses a near-infrared moisture meter to detect the moisture content of the material at discharge in real time. The drive motor 13 of each conveying module 1 is electrically connected to the control module (not shown), and the control module uses a programmable logic controller (PLC).
[0035] During operation, the control module outputs independent frequency commands to each drive motor 13 according to the preset drying process curve, enabling independent speed adjustment of each conveying module 1. Simultaneously, the control module receives real-time moisture content signals from each moisture detection module. When the moisture content of the output material from a certain conveying module deviates from the set value, the control module automatically adjusts the conveying speed of that module or adjacent modules, forming a closed-loop control. For example, when the moisture content detected by the moisture detection module of a certain conveying module exceeds the set value, the control module controls that conveying module to reduce its conveying speed to lower the output moisture content.
[0036] In addition, in the preheating zone, the control module drives the conveying module to form a thinner material layer at a higher speed, which enhances the evaporation of surface moisture. In the drying zone, the operating speed of the conveying module is gradually reduced, which allows the material, which has shrunk in volume after drying, to be redistributed, thereby increasing the conveying capacity of the conveying module and extending the residence time of the material in the drying chamber, thus improving the drying effect. In the cooling zone, a lower speed is used to reduce heat loss while ensuring that the moisture content of the discharged material meets the standards.
[0037] In use, each conveying module of this device should be set up corresponding to the preheating zone, drying zone, and cooling zone. First, based on the material characteristics, adjust the eccentric roller 5 driven by motor 51 to rotate, setting the drop height of each conveying module to 30mm-50mm to prevent material scattering or breakage. The operator sets the operating parameters of each conveying module in the control module: preheating zone conveying speed 1.0-1.2m / min, drying zone conveying speed 0.8-1.0m / min, and cooling zone conveying speed 0.5-0.8m / min.
[0038] The material enters the drying chamber along the conveyor belt and falls from the discharge end of the previous conveyor module to the feed end of the next conveyor module, thus achieving material flipping.
[0039] In the preheating zone, the surface moisture of the material evaporates, and the high-pressure steam of the spray cleaning mechanism 2 sprays intermittently to clean the juice adhering to the surface of the conveyor belt, preventing the juice from drying, concentrating and solidifying on the conveyor belt.
[0040] In the drying zone, since the material surface has been dehydrated and its adhesion to the conveyor belt has decreased, the roller brush cleaning mechanism 3 can continuously brush the surface of the conveyor belt to remove some of the dried residue and keep the conveyor belt clean.
[0041] In the cooling zone, the material has completed internal dehydration, and dust or particles are mainly generated on the conveyor belt. At this time, the conveyor belt can be cleaned by sucking away the brittle debris through the negative pressure cleaning mechanism 4.
[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. An intelligent conveying device for drying and processing agricultural products, installed inside a drying chamber, wherein the drying chamber is divided into a preheating zone, a drying zone, and a cooling zone along the material conveying direction, characterized in that, The conveying device includes multiple conveying modules, which are arranged sequentially along the material conveying direction, with the discharge end of the preceding conveying module higher than the infeed end of the following conveying module. Each conveying module includes a conveying frame, with a drive roller at the infeed end of the conveying frame connected to a drive motor mounted on the outer wall of the drying chamber. A driven roller and a tension roller are provided at the discharge end of the conveying frame. A conveyor belt is wound between the drive roller, the driven roller, and the tension roller. The return section of the conveyor belt in the preheating zone conveying module is equipped with a spray cleaning mechanism, the return section of the conveyor belt in the drying zone conveying module is equipped with a roller brush cleaning mechanism, and the return section of the conveyor belt in the cooling zone conveying module is equipped with a negative pressure cleaning mechanism.
2. The intelligent conveying device for drying and processing agricultural products according to claim 1, characterized in that, The conveyor belt has a support frame inside. One end of the support frame near the drive roller is rotatably connected to the conveyor frame via a rotating shaft. The driven roller is rotatably mounted on the other end of the support frame. An eccentric roller is provided on the conveyor frame. The lower end face of the support frame abuts against the eccentric roller. The eccentric roller is connected to an adjusting motor installed on the outer wall of the drying chamber.
3. The intelligent conveying device for drying and processing agricultural products according to claim 1, characterized in that, The discharge end of the conveying module is equipped with a scraper, which is located below the driven roller and abuts against the conveyor belt at the driven roller.
4. The intelligent conveying device for drying and processing agricultural products according to claim 1, characterized in that, The spray cleaning mechanism includes a spray pipe installed on the upper side of the return section of the conveyor belt, and a plurality of nozzles are provided on the spray pipe, with the nozzles facing the conveyor belt.
5. The intelligent conveying device for drying and processing agricultural products according to claim 4, characterized in that, The spray pipe is connected to a high-pressure steam source via a solenoid valve.
6. The intelligent conveying device for drying and processing agricultural products according to claim 1, characterized in that, The roller brush cleaning mechanism includes a roller brush, which is installed on the lower side of the return section of the conveyor belt, abuts against the conveyor belt, and is connected to a roller brush motor installed on the outer wall of the drying chamber.
7. The intelligent conveying device for drying and processing agricultural products according to claim 1, characterized in that, The negative pressure cleaning mechanism includes a negative pressure pipe located on the lower side of the return section of the conveyor belt. A suction port is provided on the negative pressure pipe, and the suction port faces the conveyor belt.
8. The intelligent conveying device for drying and processing agricultural products according to claim 7, characterized in that, The negative pressure pipe is equipped with bristles, which are arranged along the outer periphery of the suction port and abut against the conveyor belt.
9. The intelligent conveying device for drying and processing agricultural products according to claim 1, characterized in that, It also includes a moisture detection module, which is installed at the discharge end of each conveying module.
10. The intelligent conveying device for drying and processing agricultural products according to claim 1, characterized in that, It also includes a control module, and the conveying modules are electrically connected to the control module. The control module is used to independently adjust the conveying speed of each conveying module.