A movable carrier frame and a tunnel type mushroom drying device containing the carrier frame

Abstract

This invention discloses a movable support frame and a tunnel-type mushroom drying device containing the support frame, comprising multiple dockable drying racks. Each drying rack includes a frame, within which multiple partitions for supporting materials are distributed vertically. The key feature is that the two sides of each partition are rotatably connected to the sidewalls of the frame via rotating shafts, and the rotating shafts of each partition are connected in series via a transmission assembly and controlled synchronously by the same drive unit. This invention belongs to the technical field of mushroom drying equipment, and its technical effects are as follows: through the combined design of rotatable partitions and inverted V-shaped baffles, dynamic control and forced flow of airflow are achieved; the position of the inverted V-shaped baffles adjusts accordingly when the partitions rotate, changing the shape of the airflow channel; and with the staggered left-right distribution of adjacent baffles, the airflow is forced to repeatedly penetrate the material up and down during its forward movement, forming a zigzag flow path, effectively avoiding the "dry outside, wet inside" problem caused by parallel airflow in traditional equipment.

Description

Technical Field

[0001] This invention relates to the field of mushroom drying equipment technology, specifically to a movable support frame and a tunnel-type mushroom drying device containing the support frame. Background Technology

[0002] Mushrooms have an extremely high moisture content after harvesting, and are prone to rotting and spoilage if not treated promptly. Therefore, drying is a crucial step in the preservation and further processing of mushrooms. Tunnel drying equipment is widely used for dehydration and drying of agricultural products such as mushrooms, vegetables, and medicinal herbs due to its advantages of strong continuous operation, large processing capacity, and uniform drying. This type of equipment typically employs counter-current or co-current drying principles, achieving moisture evaporation through counter-current contact between hot air and the material. Existing tunnel drying equipment mostly uses a fixed support frame, with materials placed in layers on partitions. Hot air enters from one end and flows horizontally across the surface of the materials to complete the drying process.

[0003] However, in actual use, it has been found that traditional fixed-structure support frames have significant shortcomings: On the one hand, airflow tends to "short-circuit" along channels with lower resistance, preferentially flowing through interlayer gaps or frame seams, making it difficult to effectively penetrate the material layer. This results in incomplete drying of the material's center, leading to a "dry outside, wet inside" quality problem. On the other hand, the partitions of the fixed structure cannot be adjusted according to the type and thickness of the material and the needs of different drying stages. When drying mushrooms with high moisture content or dense texture, a single airflow path is insufficient to meet the drying curve requirements, affecting drying efficiency and finished product quality. Furthermore, when multiple support frames are used in combination within the drying chamber, gaps often exist at the joints between the frames, allowing hot air to pass directly through these gaps without doing any work, resulting in energy waste. Therefore, to address the existing needs, we propose a movable support frame and a tunnel-type mushroom drying device containing the support frame. Summary of the Invention

[0004] To address these issues, the present invention provides a movable support frame and a tunnel-type mushroom drying device containing the support frame, thereby solving the aforementioned problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: According to a first aspect of the present invention, a movable support frame includes a plurality of dockable drying racks, the drying racks including a frame, and a plurality of partitions for carrying materials are distributed in the vertical direction within the frame, characterized in that: the two sides of the partitions are rotatably connected to the side wall of the frame by rotating shafts, and the rotating shafts of each partition are connected in series by a transmission assembly and controlled to rotate synchronously by the same drive unit; An inverted V-shaped baffle is fixedly installed at one end of the top of the partition, and through holes are arranged in an array on the inverted V-shaped baffle. Through holes are arranged in an array on the surface of the partition. When two adjacent drying racks are used together in a horizontal direction, the partitions at their corresponding positions are arranged in a mirror symmetrical manner under the control of the drive unit, so that the inverted V-shaped baffles at the docking point of the two movable support racks together form a complete airflow guiding channel; the bottom sides of the partition are provided with sealing plates, which are connected to the partition through a linkage mechanism and extend and retract with the partition when it rotates, so as to fill the longitudinal gap caused by the rotation of the partition when the adjacent movable support racks are docked.

[0006] Furthermore, the inverted V-shaped baffles on adjacent partitions within the same frame are staggered left and right, causing the airflow to form an alternating forced flow path as it moves forward.

[0007] Furthermore, U-shaped grooves are provided on both sides of the frame, and one end of the rotating shaft extends into the U-shaped groove, which limits the rotation range of the partition.

[0008] Furthermore, the transmission assembly includes a belt drive mechanism or a chain drive mechanism, driven by a motor fixedly mounted on the frame.

[0009] Furthermore, the rotation angles of the partitions within the same frame are different under the control of the drive unit. The odd-numbered partitions and even-numbered partitions obtain different transmission ratios through independent transmission chains to achieve differentiated control of the airflow channels between the upper and lower layers.

[0010] Furthermore, a pulley is installed at the end of the rotating shaft of the odd-numbered partition, a pulley is installed at the end of the rotating shaft of the even-numbered partition, and pulleys three connecting adjacent odd and even partitions have different diameters, thereby achieving the angle difference between the odd and even partitions through the diameter difference.

[0011] Furthermore, the sealing plate includes a rectangular plate and a semi-circular top block fixed to its outer end. The end face of the semi-circular top block and the end face of the partition are located on the same plane, so that a continuous and flat sealing surface is formed when the sealing plates of adjacent movable support frames are connected.

[0012] Furthermore, the linkage mechanism includes a T-shaped frame fixed to the bottom of the partition and a sliding groove opened on the sealing plate. The limiting block of the T-shaped frame is slidably connected to the sliding groove, converting the rotational motion of the partition into the horizontal displacement of the sealing plate.

[0013] Furthermore, the sealing plate is slidably connected to a vertical groove opened on the inner side of the frame via a connecting shaft.

[0014] Furthermore, the vertical groove guides the vertical movement of the sealing plate, and together with the groove, they form a composite motion constraint, so that the sealing plate always keeps its end face flush during the rotation of the partition and extends outward as the rotation angle increases.

[0015] Furthermore, casters are fixedly installed at the four corners of the bottom of the frame, allowing the movable support frame to freely enter and exit the drying box.

[0016] Furthermore, the device includes a drying chamber, on which air inlets and outlets are respectively opened on both sides. The drying chamber is equipped with a movable support frame composed of multiple drying racks, and adjacent drying racks are joined end to end to form a continuous material carrying channel.

[0017] The present invention has the following advantages: 1. This movable support frame and tunnel-type mushroom drying device containing the support frame achieve dynamic control and forced flow of airflow through a combination design of rotatable baffles and inverted V-shaped baffles. When the baffles rotate, the position of the inverted V-shaped baffles is adjusted accordingly, changing the shape of the airflow channel. With the staggered distribution of adjacent baffles, the airflow is forced to repeatedly penetrate the material up and down during its forward movement, forming a zigzag flow path, effectively avoiding the "dry outside and wet inside" problem caused by parallel airflow in traditional equipment. The perforations on the baffles also serve to assist in guiding the flow and equalizing the pressure, improving the local airflow distribution and ensuring uniform heating of the material. 2. This movable support frame and tunnel-type mushroom drying device containing the support frame adopt a single motor drive combined with layered differentiated transmission and mirror linkage mechanism to achieve multi-dimensional airflow organization and adjustment under a minimalist structure; by combining pulleys of different diameters, the odd-numbered and even-numbered layers of partitions obtain different transmission ratios, realizing differentiated rotation of each layer and forming a vertical airflow gradient that matches the drying process; the partitions on adjacent drying racks are adjusted in a mirror symmetrical manner, so that the docking point forms a complete "V" or "A" shaped airflow channel, ensuring the continuity of airflow between racks; combined with the counter-current layout where the inlet is located on the side of the outlet, the material moves from the low temperature zone to the high temperature zone, making full use of heat energy and avoiding sudden changes; 3. This movable support frame and tunnel-type mushroom drying device containing the support frame are designed with a sealing plate mechanism that automatically extends and retracts with the rotation of the partition. This ingenious method solves the airflow short-circuiting problem when multiple frames are connected with zero additional power. When the partition rotates, the T-shaped frame at the bottom drives the sealing plate to generate horizontal and vertical displacement under the combined constraint of the sliding groove and the vertical sliding groove. This ensures that the sealing plate always keeps its end face flush and extends outward as the rotation angle increases, adaptively filling the longitudinal gap between the frames. Adjacent sealing plates connect to form a continuous and flat sealing surface, effectively blocking the airflow short-circuiting channel. All mechanisms are integrated at the bottom of the partition and inside the frame, resulting in a compact structure that does not occupy additional space, achieving a unity of dynamic sealing and structural compactness. Attached Figure Description

[0018] Figure 1 This is a front view of a drying oven with a movable support frame proposed in this invention; Figure 2 for Figure 1 A cross-sectional view; Figure 3 This is a schematic diagram of the front view of the drying rack; Figure 4 for Figure 3 A schematic diagram of the decomposition process; Figure 5 for Figure 4 A schematic diagram of the decomposition process; Figure 6 for Figure 5 A frontal view diagram; Figure 7 This is a schematic diagram of the partition from the front. Figure 8 for Figure 7 A schematic diagram of the central partition viewed from below.

[0019] In the diagram: 1. Drying oven; 11. Air inlet; 12. Air outlet; 2. Movable support frame; 21. Drying rack; 211. Frame; 222. Partition; 223. Inverted V-shaped baffle; 224. Through hole; 225. U-shaped groove; 226. Side cover plate; 227. Rotating shaft; 228. Motor; 229. Belt drive assembly; 31. Sealing plate; 312. Semi-circular top block; 311. Rectangular plate; 32. Connecting shaft; 33. Vertical slide groove; 312. Fixing plate; 313. Slide groove; 34. T-shaped frame; 341. Limiting block; 342. Limiting plate; Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1; Reference Figures 1-8 A movable support frame and a tunnel-type mushroom drying device containing the support frame, comprising a drying box 1, wherein an air inlet 11 and an air outlet 12 are respectively provided on both sides of the drying box 1, and a movable support frame 2 is provided inside the drying box 1, wherein the movable support frame 2 is composed of multiple drying frames 21 joined together. The front end of the drying oven 1 is provided with an inlet 13 and an outlet 14 on both sides, the inlet 13 is located on one side of the outlet 12, and the outlet 14 is located on one side of the inlet 11. Both the vehicle entrance 13 and the vehicle exit 14 are equipped with sealing doors (not shown in the figure). The drying rack 21 includes a rectangular frame 211. Universal wheels are fixedly installed at the four corners of the bottom of the frame 211. Multiple partitions 222 are distributed on the inner wall of the frame 211. An inverted V-shaped baffle 223 is fixedly installed at one top end of each partition 222. Through holes 224 are arrayed on the inverted V-shaped baffle 223. Through holes (not shown in the figure) are arrayed on the bottom of the inner wall of each partition 222. The inverted V-shaped baffles 223 on adjacent partitions 22 within the same frame 211 are staggered. For example, the inverted V-shaped baffle 223 on the upper partition 22 is installed on the left side, and the inverted V-shaped baffle 223 on the lower partition 22 is installed on the right side. The end faces on both sides of each partition 22 are on the same plane as the two sides of the frame 211; When in use, place the material to be dried on the partition 222, and then push the drying tube 21 into the drying box 1 through the inlet 13; Working principle: During the drying operation, high-temperature drying gas enters the drying chamber 1 through the air inlet 11 and flows horizontally towards the air outlet 12. Because the inverted V-shaped baffles 223 on adjacent partitions 22 within the same frame 211 are staggered left and right, the airflow is forced to change direction during its forward movement: when the airflow encounters the inverted V-shaped baffle 223 on the left, it is blocked and forced downwards through the through-hole at the bottom of the partition 222, vertically penetrating and drying the material placed on the partition 222; after passing through the material, the airflow rises and continues forward, then encounters the inverted V-shaped baffle 223 on the right of the next layer, is blocked again, and penetrates downwards through the material. This process repeats, forming a zigzag flow path within the chamber, effectively avoiding the "dry surface, wet interior" phenomenon caused by airflow parallel to the material surface. The through-holes 224 arrayed on the inverted V-shaped baffle 223 serve to assist in airflow guidance and pressure equalization, allowing some airflow to form a micro-circulation in front of the baffle, further improving the local airflow distribution. The design of the two end faces of the partition 22 being flush with the two sides of the frame 211 ensures that a continuous and flat airflow channel wall is formed when multiple drying racks 21 are connected. The arrangement of inlet 13 on one side of outlet 12 and outlet 14 on one side of inlet 11 forms a counter-current drying path. The cold, wet material entering the vehicle first comes into contact with the cooler but more efficient drying exhaust gas for gentle preheating. As the material moves towards the outlet, it gradually comes into contact with the higher-temperature drying gas, achieving heating and drying. The material about to exit the vehicle is in the highest temperature zone, completing the final drying process. This counter-current layout fully utilizes thermal energy, avoids sudden changes in material temperature, and improves drying quality. Example 2: Similar to Embodiment 1, the technical problem in the above solution is that, more specifically: referring to... Figures 1-8A movable support frame, wherein each of the partitions 22 is not fixedly connected to the frame 211, and each partition 22 has a rotating shaft 227 fixedly connected to both sides, the rotating shaft 227 being rotatably connected to the side wall of the frame 211. Both sides of the frame 211 are provided with U-shaped grooves 225, and the end of the rotating shaft 227 away from the partition 222 extends into the U-shaped groove 225; the rotating shafts 227 of each partition 22 are connected in series through a belt drive assembly 229; the belt drive assembly 229 is driven by a motor 228. In use: If it is necessary to adjust the shape of the transmission channel between adjacent partitions 222, control motor 228 to rotate partitions 222 through belt drive assembly 229 to adjust the angle. The adjustment angles of partitions 222 on two adjacent drying racks 21 are opposite and mirror images of each other. Working principle: When the motor 228 drives the belt drive assembly 229, all the partitions 22 in the same drying rack 21 rotate synchronously around the rotating shaft 227, changing their tilt angle. The change in the angle of the partition 22 directly adjusts the spatial position of the inverted V-shaped baffle 223, thereby changing the cross-sectional area and guiding direction of the airflow channel; More importantly, the partitions 22 on the two adjacent drying racks 21 are adjusted symmetrically in a mirror manner: when the partition 22 of the left drying rack rotates clockwise by a certain angle, the partition 22 of the right drying rack rotates counterclockwise by the same angle. This mirror arrangement allows the inverted V-shaped baffles 223 at the joint of the two drying racks to form a complete "V" or "A" shaped airflow channel, which not only ensures the continuity of airflow during the transition between racks, but also enhances the convergence or diffusion effect of airflow through the symmetrical structure, meeting the needs of different drying stages (such as the need for large air volume diffusion in the early stage and strong air penetration in the later stage). Example 3: Basically the same as in Example 2, but further: Refer to Figures 1-8 A movable support frame, in which adjacent partitions 222 on the same drying rack 21 have different adjustment angles, and the odd-numbered partitions 222 have the same rotation angle from top to bottom, while the even-numbered partitions 222 have the same rotation angle. Specifically: For example, there are four partitions 222. The belt drive assembly includes two pulleys, which are fixedly installed on the ends of the shafts 227 on the same side of the first and third partitions 222, respectively. The two are driven by a belt (the pulleys and belts can also be replaced by sprockets and chains). The second and fourth partitions 222 have a shaft 227 fixedly connected to the end of the shaft 227 on the side away from the first pulley, and the two are driven by a belt. The outer wall of the rotating shaft 227 on the same side of the first and second partitions 222 is equipped with pulleys 3, which are driven by belts. However, the diameters of the two pulleys 3 are different, so the transmission ratios are different and the rotation angles are different. Working principle: This embodiment achieves differentiated adjustment of each layer of partitions under single motor drive through a clever design of the belt pulley transmission ratio; Specifically, the odd-numbered layers (first and third layers) of partitions form an independent drive chain via pulley one, while the even-numbered layers (second and fourth layers) of partitions form another independent drive chain via pulley two. The pulley three connecting the first and second layers of partitions uses different diameters, ensuring that when driven by motor 228, the odd-numbered layer drive chain and the even-numbered layer drive chain achieve different speed ratios, thus enabling the odd- and even-numbered layer partitions to rotate at different angles. The advantage of this design is that: Single-drive multi-degree-of-freedom: Only one motor is needed to control multiple layers of partitions to produce various angle combinations, which greatly simplifies the drive system and control logic; Airflow gradient control: The different angles of the odd and even layer partitions result in different airflow channel shapes in the upper and lower layers. For example, a small angle can be set in the upper layer (to enhance cross-flow) and a large angle in the lower layer (to facilitate dehumidification), forming a vertical airflow gradient that matches the drying process; Based on the mirror linkage of Embodiment 2, this embodiment further realizes multi-layer differentiated adjustment within a single frame, enabling the entire drying tunnel to also have the flexibility of airflow organization in the longitudinal direction. Example 4: Basically the same as in Example 3, but further: referring to Figures 1-8 A movable support frame, wherein both sides of the bottom of the partition 222 are provided with sealing plates 31, the sealing plate 31 includes a rectangular plate 311, a semi-circular top block 312 is fixedly connected to the outer end of the rectangular plate 311, the end of the semi-circular top block 312 away from the rectangular plate 311 is located on the same plane as the end face of the partition 222, and a fixed plate 312 is arranged in an array on the inner end, the fixed plate 312 is provided with a sliding groove 313, the inner wall of the sliding groove 313 is slidably connected to a limiting block 341, the top of the limiting block 341 is fixedly connected to the bottom of the partition 222, and the bottom of the limiting block 341 is fixedly connected to a limiting plate 342, the limiting block 341 and the limiting plate 342 form a T-shaped frame 34; The semi-circular top block 312 has a connecting shaft 32 fixedly connected to both sides of its center. The two ends of the frame 211 have corresponding vertical sliding grooves 33 on their inner sides. The inner wall of the vertical sliding groove 33 is slidably connected to the outer wall of the connecting shaft 32. Working principle: In this embodiment, in order to address the problem that longitudinal gaps may occur between adjacent drying racks 21 after the partition 22 rotates, which may lead to airflow short circuits, a sealing plate 31 mechanism that extends and retracts in conjunction with the partition 222 is designed. Specifically, when the partition 22 rotates around the pivot 227, the T-shaped frame 34 fixed to the bottom of the partition 22 moves accordingly. The limiting block 341 of the T-shaped frame 34 slides within the groove 313 of the sealing plate 31, while the sealing plate 31 is constrained within the vertical groove 33 of the frame 211 via the connecting shaft 32. This composite constraint produces a clever motion conversion; The vertical groove 33 guides the vertical movement of the sealing plate 31: the connecting shaft 32 slides in the vertical groove 33, which determines the overall height position of the sealing plate 31; The sliding groove 313 cooperates with the T-shaped frame 34 to guide the horizontal movement of the sealing plate 31: the limiting block 341 slides in the sliding groove 313, and as the partition 22 rotates, the trajectory of the sliding groove 313 forces the sealing plate 31 to produce a horizontal displacement relative to the partition 22. Linkage effect: During the rotation of the partition 22, the outer end of the final sealing plate 31 (semi-circular top block 312) remains flush with the end face of the partition 22. As the rotation angle of the partition 22 increases, the sealing plate 31 extends outward to fill the longitudinal gap between the shelves caused by the rotation of the partition. This mechanism achieves a minimalist design with dynamic sealing and zero additional drive. Through the coordinated operation of multiple components such as the T-shaped frame 34, slide 313, vertical slide 33, and connecting shaft 32, the rotational motion is precisely converted into the composite displacement of the sealing plate 31. This allows the sealing plates 31 of adjacent drying racks to fit tightly together when they are docked, forming a continuous and flat sealing surface. This effectively blocks the airflow short-circuit channel. Furthermore, all mechanisms are integrated into the bottom of the partition 22 and the inner side of the frame 211, resulting in a compact structure that does not occupy additional space.

Claims

1. A movable support frame, characterized in that, The device includes multiple dockable drying racks (21), each rack (21) comprising a frame (211) with multiple partitions (22) for carrying materials distributed vertically within the frame (211). The device is characterized in that the two sides of each partition (22) are rotatably connected to the side wall of the frame (211) via a rotating shaft (227), and the rotating shafts (227) of each partition (22) are connected in series via a transmission assembly (229) and controlled to rotate synchronously by the same drive unit. An inverted V-shaped baffle (223) is fixedly installed at one end of the top of the partition (22). Through holes (224) are arranged in an array on the inverted V-shaped baffle (223), and through holes are arranged in an array on the surface of the partition (22). When two adjacent drying racks (21) are used together in a horizontal direction, the partitions (22) at their corresponding positions are arranged in a mirror symmetrical manner under the control of the drive unit, so that the inverted V-shaped baffles (223) at the docking point of the two movable support racks together form a complete airflow guiding channel; the bottom sides of the partition (22) are provided with sealing plates (31), the sealing plates (31) are connected to the partition (22) through a linkage mechanism, and extend and retract as the partition (22) rotates, so as to fill the longitudinal gap caused by the rotation of the partition when the adjacent movable support racks are docked.

2. The movable support frame according to claim 1, characterized in that, The inverted V-shaped baffles (223) on adjacent partitions (22) within the same frame (211) are staggered left and right, so that the airflow forms an alternating forced flow path as it moves forward.

3. A movable support frame according to claim 2, characterized in that, The frame (211) has U-shaped grooves (225) on both sides, and one end of the rotating shaft (227) extends into the U-shaped groove (225), which limits the rotation range of the partition (22).

4. A movable support frame according to claim 3, characterized in that, The transmission assembly (229) includes a belt drive mechanism or a chain drive mechanism, driven by a motor (228) fixedly mounted on the frame (211).

5. A movable support frame according to claim 4, characterized in that, The partitions (22) within the same frame (211) rotate at different angles under the control of the drive unit. The odd-numbered partitions and even-numbered partitions obtain different transmission ratios through independent transmission chains to achieve differentiated control of the upper and lower airflow channels.

6. A movable support frame according to claim 5, characterized in that, The odd-numbered partition is equipped with a pulley 1 at the end of the shaft (227), the even-numbered partition is equipped with a pulley 2 at the end of the shaft (227), and the pulleys 3 connecting the adjacent odd and even partitions have different diameters, so that the angle difference between the odd and even partitions is achieved through the diameter difference.

7. A movable support frame according to claim 6, characterized in that, The sealing plate (31) includes a rectangular plate (311) and a semi-circular top block (312) fixed to its outer end. The end face of the semi-circular top block (312) and the end face of the partition (22) are located on the same plane, so that when the sealing plates (31) of adjacent movable support frames are connected, a continuous and flat sealing surface is formed.

8. A movable support frame according to claim 7, characterized in that, The linkage mechanism includes a T-shaped frame (34) fixed to the bottom of the partition (22) and a slide groove (313) opened on the sealing plate (31). The limiting block (341) of the T-shaped frame (34) is slidably connected to the slide groove (313) to convert the rotational motion of the partition (22) into the horizontal displacement of the sealing plate (31).

9. A movable support frame according to claim 8, characterized in that, The sealing plate (31) is slidably connected to the vertical groove (33) opened on the inner side of the frame (211) via the connecting shaft (32).

10. A movable support frame according to claim 9, characterized in that, The vertical groove (33) guides the vertical movement of the sealing plate (31), and together with the groove (313), they form a composite motion constraint, so that the sealing plate (31) always keeps its end face flush during the rotation of the partition (22) and extends outward as the rotation angle increases.

11. A movable support frame according to claim 10, characterized in that, The frame (211) is fixedly equipped with casters at the four corners of its bottom, allowing the movable support frame to freely enter and exit the drying box.

12. A tunnel-type mushroom drying device containing a movable support frame, characterized in that, The equipment includes a drying box (1), with an air inlet (11) and an air outlet (12) on both sides of the drying box (1). The drying box (1) is equipped with a movable support frame (2) composed of multiple movable support frames (21) as described in any one of claims 1 to 10. Adjacent drying frames (21) are joined end to end to form a continuous material carrying channel.

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