Airing device for straw processing biofuel

Abstract

The airing device comprises a box body, an opening in the top wall of the box body is hinged to a telescopic canopy through a hinge, the inner side of the telescopic canopy is movably connected with a lifting support through a connecting rod, the lifting support is connected with a lead screw and a guide rod, and the lead screw and the guide rod are hinged to the top wall of the box body. The screw rod is in threaded connection with the lifting support, the bottom of the screw rod is connected with a motor, a humidity sensor is arranged on the side face of the box body, the humidity sensor is electrically connected with the electric control box, a mounting plate is vertically arranged in an inner cavity of the box body, a hollowed-out bottom plate is movably arranged in the mounting plate, and an airing bin is placed on the hollowed-out bottom plate; and the bottom of the hollow bottom plate is connected with a supporting block through a spring. The telescopic rain shed is scientific and reasonable in structural design, the motor driving system of the telescopic rain shed is controlled through linkage of the humidity sensor and the electric cabinet, and when the humidity exceeds the standard, the motor pushes the lifting support through the lead screw and the guide rod, so that the telescopic rain shed is rapidly unfolded and closed, and automatic closed protection in rainy days is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of biofuel drying equipment, specifically a drying device for processing straw into biofuel. Background Technology

[0002] Biofuels produced during straw processing require sun-drying to reduce their internal moisture content. Existing straw sun-drying devices suffer from several drawbacks: traditional rain shelters often rely on manual opening and closing or timed control, failing to respond in real-time to sudden rainfall, leading to fluctuating straw moisture content and impacting subsequent fermentation efficiency; static spreading easily results in a "crust effect"—dry surface but damp interior—and turning the straw relies on manual operation, resulting in high energy consumption and breakage rates; fixed structures are difficult to adapt to different humidity / temperature environments, lack auxiliary heating and intelligent control modules, and extend the drying cycle by 3-5 times during rainy weather. Therefore, we propose a straw sun-drying device for biofuel processing. Utility Model Content

[0003] The purpose of this invention is to provide a drying device for processing straw into biofuel, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a drying device for processing straw into biofuel, comprising a box body, wherein a retractable awning is hinged to the top wall opening of the box body, the inner side of the retractable awning is movably connected to a lifting support via a connecting rod, a lead screw and a guide rod are connected to the lifting support, the lead screw is screwed to the lifting support and a motor is connected to the bottom of the lead screw, a humidity sensor is provided on the side of the box body, the humidity sensor is electrically connected to an electrical control box, an installation plate is vertically arranged in the inner cavity of the box body, a perforated bottom plate is movably arranged in the installation plate, a drying chamber is placed on the perforated bottom plate, the bottom of the perforated bottom plate is connected to a support block via a spring, and a vibration motor is installed below the perforated bottom plate, a plurality of through holes are opened on the drying chamber, a carbon fiber heating film is installed on the perforated bottom plate, and a drying mechanism is arranged below the perforated bottom plate.

[0005] In the above scheme, the two ends of the connecting rod are respectively hinged to the telescopic canopy and the lifting bracket through axle pins.

[0006] In the above scheme, when the two retractable canopies are on the same plane, they completely close the opening at the top of the box.

[0007] In the above scheme, the lifting bracket is provided with threaded holes and guide holes, and the guide rod is movably inserted into the guide hole.

[0008] In the above scheme, the air drying mechanism includes a fan, one end of which is connected to a diversion pipe with an opening at the top via a connecting pipe.

[0009] In the above scheme, the drying chamber is movably engaged in the groove of the hollow base plate.

[0010] In the above scheme, the support block is fixed inside the mounting plate.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This straw drying device for processing biofuel has a simple and reasonable structural design and strong practicality. The drying chamber is movably engaged in the groove of the hollowed-out bottom plate, and the elastic connection between the support block and the spring allows for quick disassembly and replacement of the drying chamber, facilitating batch processing of straw and equipment cleaning and maintenance, and avoiding cross-contamination of residual materials. The spring buffer structure reduces the mechanical impact during the operation of the vibrating motor, extending the service life of the equipment. The motor drive system of the retractable rain canopy is linked to the humidity sensor and the electrical control box. When the humidity exceeds the standard, the motor pushes the lifting bracket through the screw and guide rod, causing the retractable rain canopy to quickly open and close, achieving automatic sealing and protection in rainy weather. The double-canopy planar splicing design ensures rainproof sealing, preventing the straw from getting wet and moldy. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the internal structure of this utility model.

[0013] Figure 2 This utility model Figure 1 Schematic diagram of the structure at point A in the middle.

[0014] Figure 3 This is a schematic diagram of the structure of this utility model.

[0015] In the diagram: 1. Box body; 11. Telescopic canopy; 12. Connecting rod; 13. Lifting bracket; 14. Screw rod; 15. Motor; 16. Guide rod; 17. Humidity sensor; 18. Electrical control box; 19. Mounting plate; 2. Hollowed-out base plate; 21. Drying chamber; 22. Spring; 23. Support block; 24. Vibration motor; 25. Through hole; 26. Carbon fiber heating film; 27. Fan; 28. Connecting pipe; 29. ​​Diverter pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3This utility model provides a technical solution: a drying device for processing straw into biofuel, comprising a box body 1, wherein a retractable rain canopy 11 is hinged to the top wall opening of the box body 1 via a hinge, the inner side of the retractable rain canopy 11 is movably connected to a lifting support 13 via a connecting rod 12, a lead screw 14 and a guide rod 16 are connected to the lifting support 13, the lead screw 14 is screwed to the lifting support 13 and a motor 15 is connected to the bottom of the lead screw 14, and a humidity sensor 17 is provided on the side of the box body 1. Sensor 17 is electrically connected to electrical control box 18. An installation plate 19 is vertically arranged inside the box 1. A perforated bottom plate 2 is movably arranged inside the installation plate 19. A drying chamber 21 is placed on the perforated bottom plate 2. The bottom of the perforated bottom plate 2 is connected to a support block 23 by a spring 22. A vibration motor 24 is installed below the perforated bottom plate 2. Several through holes 25 are opened on the drying chamber 21. A carbon fiber heating film 26 is installed on the perforated bottom plate 2. A drying mechanism is arranged below the perforated bottom plate 2.

[0018] In the above scheme, the two ends of the connecting rod 12 are respectively hinged to the telescopic canopy 11 and the lifting bracket 13 via pivot pins. The connecting rod 12, the telescopic canopy 11, and the lifting bracket 13 form a double rocker mechanism, which converts the vertical lifting motion of the motor 15 into the horizontal unfolding motion of the canopy, resulting in high transmission efficiency.

[0019] In the above scheme, when the two retractable canopies 11 are on the same plane, they completely seal the top opening of the box 1. After the two canopies are closed, EPDM rubber sealing strips are installed at the contact edges, and waterproof sealing is achieved through compression deformation.

[0020] In the above scheme, the lifting bracket 13 is provided with a threaded hole and a guide hole, and the guide rod 16 is movably inserted into the guide hole. The clearance fit tolerance between the guide rod 16 and the guide hole is H7 / g6, which constrains the lifting bracket 13 to move only in the vertical direction and prevents the bracket from deflecting when the lead screw 14 rotates.

[0021] In the above scheme, the air-drying mechanism includes a fan 27, one end of which is connected to a top-opening diversion pipe 29 via a connecting pipe 28. A guide plate is installed inside the diversion pipe 29 to divide the airflow into multiple parallel jets, which evenly cover the bottom of the drying chamber 21 through the top opening with a wind speed deviation of <10%. A stainless steel filter screen with a mesh size ≤2mm is installed at the opening of the diversion pipe 29 to prevent straw debris from being drawn into the air duct.

[0022] In the above scheme, the drying chamber 21 is movably engaged in the groove on the hollow base plate 2.

[0023] In the above scheme, the support block 23 is fixed inside the mounting plate 19. The support block 23 and the mounting plate 19 are fixed by a combination of bolts and rubber washers to attenuate the high-frequency impact transmitted by the vibration motor 24.

[0024] Working principle:

[0025] This straw drying device for processing biofuel uses a humidity sensor 17 to detect the ambient humidity in real time. When the humidity exceeds a set threshold, such as air humidity > 80% before rainfall, it immediately sends a signal to the electrical control box 18. The electrical control box 18 then starts the motor 15, driving the lead screw 14 to rotate. Since the lead screw 14 is threadedly connected to the lifting bracket 13, and the guide rod 16 slides and is limited within the guide hole, the lifting bracket 13 moves up and down vertically. As the lifting bracket 13 moves up and down, it pushes the two telescopic canopies 11 on both sides to rotate around the hinge point through the connecting rod 12 until the two canopies are completely closed, covering the top opening of the box 1 and preventing rainwater from seeping in.

[0026] Once the humidity returns to normal, the motor 15 reverses, the lead screw 14 drives the lifting bracket 13 to rise, and the telescopic awning 11 folds back to its original position, restoring the drying space.

[0027] After the vibration motor 24 is started, it transmits high-frequency micro-vibration to the hollow bottom plate 2 and the drying chamber 21 through the spring 22. The elastic deformation of the spring 22 can buffer the vibration impact and avoid fatigue damage to the components caused by rigid connection; the vibration causes the straw in the drying chamber 21 to tumble continuously, breaking the piled state. Combined with the ventilation design of the through hole 25, it realizes the multi-directional penetration of airflow from the bottom air drying mechanism → through hole 25 → straw layer → top opening;

[0028] Natural drying mode: On sunny days, it relies solely on natural ventilation and vibration turning. The through holes 25 in the perforated bottom plate 2 allow free air circulation, and the vibration motor 24 runs for 5 minutes every 30 minutes to prevent straw from clumping.

[0029] Rainy / Cloudy Assist Mode: After the humidity sensor 17 triggers the awning to close, the carbon fiber heating film 26 activates far-infrared radiation to heat the surface to 60-80℃. Simultaneously, the fan 27 pumps outside air into the distribution pipe 29 through the connecting pipe 28. The top opening design of the distribution pipe 29 ensures that hot air evenly covers the bottom of the drying chamber 21, forming a composite drying environment of "bottom radiation heating + top convection dehumidification." Actual drying efficiency is 40% higher than that of single heating.

[0030] Combined drying mode: Under extremely humid conditions, the vibrating motor 24, heating film 26, and fan 27 operate synchronously. Vibration turning the straw dynamically refreshes the heated surface, and the fan 27 forcibly removes moisture. In combined mode, the drying capacity per unit of energy consumption is higher, which is more energy-efficient than traditional electric heating drying.

[0031] The drying chamber 21 is attached to the hollow base plate 2 by a groove. The operator can remove it by simply pulling it horizontally. After disassembly, the straw residue on the inner wall of the drying chamber 21 can be rinsed. At the same time, it supports the replacement of the chamber body with different diameter through holes 25, such as Φ10mm holes for rough processing and Φ5mm holes for fine processing, to adapt to diverse production needs.

[0032] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying device for processing straw into biofuel, comprising a housing (1), characterized in that: The top wall opening of the box (1) is hinged to a telescopic awning (11). The inner side of the telescopic awning (11) is movably connected to a lifting bracket (13) via a connecting rod (12). A lead screw (14) and a guide rod (16) are connected to the lifting bracket (13). The lead screw (14) is screwed to the lifting bracket (13), and a motor (15) is connected to the bottom of the lead screw (14). A humidity sensor (17) is installed on the side of the box (1). The humidity sensor (17) is electrically connected to an electrical control box (18). An installation plate (19) is vertically arranged inside the body (1). A perforated bottom plate (2) is movably arranged inside the installation plate (19). A drying chamber (21) is placed on the perforated bottom plate (2). The bottom of the perforated bottom plate (2) is connected to a support block (23) by a spring (22). A vibration motor (24) is installed below the perforated bottom plate (2). Several through holes (25) are opened on the drying chamber (21). A carbon fiber heating film (26) is installed on the perforated bottom plate (2). A drying mechanism is arranged below the perforated bottom plate (2).

2. The straw drying device for processing biofuel according to claim 1, characterized in that: The two ends of the connecting rod (12) are respectively hinged to the telescopic canopy (11) and the lifting bracket (13) via axle pins.

3. The drying device for processing straw into biofuel according to claim 1, characterized in that: When the two retractable canopies (11) are on the same plane, they completely close the top opening of the box (1).

4. The drying device for processing straw into biofuel according to claim 1, characterized in that: The lifting bracket (13) has a threaded hole and a guide hole, and the guide rod (16) is movably inserted into the guide hole.

5. A drying device for processing straw into biofuel according to claim 1, characterized in that: The air-drying mechanism includes a fan (27), one end of which is connected to a top-opening branch pipe (29) via a connecting pipe (28).

6. A straw drying device for processing biofuel according to claim 1, characterized in that: The drying chamber (21) is movably engaged in the groove on the hollow base plate (2).

7. A straw drying device for processing biofuel according to claim 1, characterized in that: The support block (23) is fixed inside the mounting plate (19).

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