An energy-saving fruit and vegetable tunnel drying machine

Abstract

The present invention discloses an energy-saving fruit and vegetable tunnel dryer in the technical field of agricultural product drying, comprising an annular guide rail mechanism, a tunnel-type drying bin body, a plurality of closed doors, and a self-propelled transport vehicle arranged on the annular guide rail mechanism and performing circular motion along the annular guide rail mechanism. In this solution, when the self-propelled transport vehicle enters and exits the drying bin body, the inlet and outlet are effectively closed by hanging and placing the closed door and closing itself, which significantly reduces the heat loss of the entire drying process, improves the thermal efficiency of the drying process, and at the same time improves the energy utilization efficiency, reduces the energy consumption of the drying process, meets the environmental protection goal of energy conservation and emission reduction, and greatly reduces the overall production cost of the enterprise. In addition, the design of the annular track mechanism allows the self-propelled transport vehicle to achieve circular motion, ensuring that the fruit and vegetable raw materials can be continuously fed into the drying bin body, thereby enhancing the continuity of the production process.

Description

Technical Field

[0001] The invention relates to the technical field of drying agricultural products, in particular to an energy-saving fruit and vegetable tunnel drying machine. Background Art

[0002] As one of the key equipment in the food processing industry, tunnel-type fruit and vegetable drying machine is widely used due to its continuous production, high efficiency and good drying uniformity. However, the existing technology still has several shortcomings in practical application, especially in terms of energy utilization efficiency and heat energy retention during the drying process.

[0003] Specifically, in existing tunnel dryers, the door of the drying room usually needs to be opened frequently when the drying vehicle enters and exits the drying room, which causes a large amount of heat loss, not only reducing the drying efficiency, but also increasing energy consumption. For example, the tunnel-type fruit and vegetable drying room described in patent CN106196968B improves the drying uniformity through the design of the circulating air duct and the circulating fan, but the frequent opening of the door during the entry and exit of the drying vehicle is still a significant source of heat loss.

[0004] In addition, some tunnel dryers using a conveyor belt system, such as the high-efficiency hot air tunnel circulation fruit and vegetable dryer described in patent CN108158002B, although they achieve continuous conveyance of fruit and vegetable raw materials, the doors on both sides of the dryer need to be kept open, which also causes a large amount of heat loss. This design has defects in maintaining a stable thermal environment in the drying room.

[0005] In view of the above problems, the present invention proposes an energy-saving fruit and vegetable tunnel drying machine. Summary of the invention

[0006] The purpose of the present invention is to solve the problems raised in the above background technology, and the present invention provides an energy-saving fruit and vegetable tunnel drying machine.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] An energy-saving fruit and vegetable tunnel dryer comprises an annular guide rail mechanism, a tunnel-type drying chamber body, a plurality of closed doors, and a self-propelled transport vehicle arranged on the annular guide rail mechanism and performing a cyclic motion along the annular guide rail mechanism, wherein:

[0009] The annular guide rail mechanism is composed of two parallel straight guide rail assemblies and two symmetrically arranged arc guide rail assemblies, and the two straight guide rail assemblies and the two arc guide rail assemblies form an annular shape;

[0010] The number of the drying bin bodies is two and they correspond to the two straight guide rail assemblies respectively. Closing plates are provided at both ends of the drying bin body and the two closing plates are respectively configured with an inlet and an outlet. The inlet and the outlet are both movably mounted with the closing doors, and the closing plates are provided with movable blocking members for blocking part of the closing doors.

[0011] Any number of the enclosed doors can be stacked and hung;

[0012] The self-propelled transport vehicle comprises a self-propelled frame and a material frame rotatably mounted on the top of the self-propelled frame, and the closed doors can be hung on both ends of the material frame. When the self-propelled transport vehicle is located on the straight guide rail assembly and approaches the entrance, two closed doors are hung on the rear end of the material frame. When the self-propelled transport vehicle passes through the drying bin body, the front end of the material frame sequentially suspends and takes away the closed doors on the entrance and the exit, and simultaneously places the two closed doors at the rear end on the entrance and the exit from the outside to the inside in sequence. When the self-propelled transport vehicle passes through the arc guide rail assembly, the material frame turns 180 degrees to exchange the front end with the rear end, thereby performing drying work on another drying bin body. The width of the material frame is the same as the width of the closed door.

[0013] Furthermore, one end of the raw material frame is constructed with four positioning holes 1 distributed in a rectangular shape, the other end of the raw material frame is constructed with four positioning rods 1, one surface of the closed door is constructed with four positioning holes 2, and the other surface of the closed door is constructed with four positioning rods 2, the four positioning rods 1 are respectively movably inserted into the four positioning holes 2, and the four positioning rods 2 are respectively movably inserted into the four positioning holes 1 or the four positioning holes 2, magnet sheets are embedded at both ends of the raw material frame, and the two surfaces of the closed door are magnetic.

[0014] Furthermore, both sides of the two faces of the closed door are constructed with beveled edges, and one surface of the closing plate is constructed with a horizontal T-shaped slide groove, and the movable blocking member includes a T-shaped sliding block slidably installed inside the T-shaped slide groove, and a blocking block is fixed on one side of the T-shaped sliding block, and the side of the blocking block close to the inlet or the outlet is constructed as an inclined surface corresponding to the beveled edge, and a mounting block is fixed inside the T-shaped slide groove, and two connecting plates sliding on the T-shaped slide grooves are arranged between the mounting block and the blocking block, and a spring is connected between the two connecting plates, one of the connecting plates is in contact with the blocking block, and a threaded rod is rotatably installed on the mounting block, and the other connecting plate is threadedly sleeved on the threaded rod, and a control member for controlling the rotation of the threaded rod is arranged on the closing plate, and when one of the closed doors at the rear end of the self-propelled transport vehicle is placed on the inlet or the outlet, the beveled edge fits into the inclined surface.

[0015] Furthermore, the control member includes a worm wheel fixedly mounted on one end of the threaded rod, a worm screw meshing with the worm wheel is rotatably mounted on the closing plate, a control knob is fixed to the end of the worm screw, and a scale line corresponding to the other connecting plate is constructed on one surface of the closing plate.

[0016] Furthermore, the blocking block is located at one end of the inlet or the outlet and is connected to a plurality of balls.

[0017] Furthermore, two movable blocking members are arranged on the same closed plate, and the two movable blocking members are respectively located on opposite sides of the inlet or the outlet. The two movable blocking members at the inlet can block the closed door on the outside of the self-propelled transport vehicle and cannot overcome the magnetic force to block the closed door on the inside. The two movable blocking members at the outlet can overcome the magnetic force to block the closed door on the inside of the self-propelled transport vehicle.

[0018] Furthermore, the straight guide rail assembly is composed of two parallel guide plates, the drying bin body is arranged on the two guide plates, and the distance between the two guide plates on one side close to each other is the same as the width of the inlet, the outlet and the closed door.

[0019] Furthermore, the arc guide rail assembly includes an arc guide frame, which is mounted on the work surface through a plurality of support frames, the end of the arc guide frame is located between the two guide plates, the height of the arc guide frame is slightly higher than the height of the self-propelled transport vehicle and the closed door, the bottom side of the arc guide frame is constructed with an arc groove, and a liftable guide member is arranged inside the raw material frame.

[0020] Furthermore, the top of the raw material frame is constructed with an opening and a lifting plate is movably provided inside the raw material frame, a plurality of evenly distributed springs are connected between the bottom of the lifting plate and the inner bottom wall of the raw material frame, a raw material placement box is placed on the top of the lifting plate, the guide member includes a guide rod fixed in the middle of the lifting plate and located in the middle of the self-propelled transport vehicle, a guide block movably provided inside the arc groove is fixed on the top of the guide rod, when the raw material placement box is placed on the lifting plate, the guide block descends to the inside of the raw material frame, and when the raw material placement box is removed from the lifting plate, the guide block rises to be flush with the arc groove.

[0021] Furthermore, an arc-shaped rack is fixed on the inner wall of the arc-shaped groove, and the guide block is a gear. When the gear passes through the rack, the gear drives the raw material frame to turn 180 degrees through the guide rod.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In this scheme, when the self-propelled transport vehicle enters and exits the drying bin, it effectively closes the import and export by hanging and placing closed doors and closing itself, which significantly reduces the heat loss of the entire drying process, improves the thermal efficiency of the drying process, and at the same time improves the energy utilization efficiency and reduces the energy consumption of the drying process, which meets the environmental protection goal of energy conservation and emission reduction and greatly reduces the overall production cost of the enterprise.

[0024] 2. The design of the annular track mechanism in the present invention allows the self-propelled transport vehicle to achieve circular motion, ensuring that the fruit and vegetable raw materials can be continuously fed into the drying bin body, enhancing the continuity of the production process, and the automated operation of the self-propelled transport vehicle reduces manual intervention, which not only reduces labor intensity, but also improves the accuracy and repeatability of the operation.

[0025] 3. During the entire drying process, the coordinated work of the self-propelled transport vehicle and the closed door ensures that the drying bin is always in a closed state, providing a uniform and controllable drying environment for fruits and vegetables.

[0026] 4. The design of the self-propelled transport vehicle and the circular track mechanism in the present invention simplifies the maintenance process of the equipment and facilitates regular inspection and maintenance.

[0027] 5. The automated material loading and unloading process of the present invention reduces the chances of operators coming into contact with the high-temperature drying area, thereby reducing work safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 For the present invention Figure 1 Top view;

[0030] Figure 3 For the present invention Figure 2 Stereoscopic cross-sectional view in the AA direction;

[0031] Figure 4 It is a three-dimensional structural schematic diagram of the annular guide rail mechanism in the present invention;

[0032] Figure 5 A partial view of the self-propelled transport vehicle in the present invention arriving at the entrance;

[0033] Figure 6 For the present invention Figure 5 A three-dimensional cross-sectional view of

[0034] Figure 7 For the present invention Figure 6 A magnified view of the structure in center B;

[0035] Figure 8 It is a partial view of the inlet on the drying bin body of the present invention;

[0036] Fig. 9 For the present invention Figure 8 Schematic diagram of the three-dimensional structure of the middle part;

[0037] Fig.10 It is a schematic diagram of the three-dimensional structure of the closing plate and the closing door in the present invention;

[0038] Fig.11 For the present invention Fig.10 Magnified view of the structure in C;

[0039] Fig.12 For the present invention Fig.10 A three-dimensional cross-sectional view of

[0040] Fig.13 For the present invention Fig.12 A magnified view of the structure in D;

[0041] Fig.14 It is a schematic diagram of the three-dimensional structure when the self-propelled transport vehicle in the present invention moves onto the arc guide rail assembly;

[0042] Fig.15 For the present invention Fig.14 A three-dimensional cross-sectional view of

[0043] Fig.16 For the present invention Fig.15 Magnified view of the structure in center E;

[0044] Fig.17 It is a three-dimensional structural schematic diagram of a self-propelled transport vehicle in a certain state of the present invention;

[0045] Fig.18 For the present invention Fig.17 A three-dimensional cross-sectional view of

[0046] Fig.19 For the present invention Fig.18 A magnified view of the structure F in the middle;

[0047] Fig. 20 It is a three-dimensional structural schematic diagram of another state of the self-propelled transport vehicle in the present invention.

[0048] In the figure: 1, annular guide mechanism; 11, straight guide assembly; 111, guide plate; 12, arc guide assembly; 121, arc guide frame; 122, support frame; 123, arc groove; 124, rack; 2, drying chamber body; 21, closing plate; 211, T-shaped slide groove; 212, scale line; 213, installation groove; 214, installation block; 215, spring three; 216, rolling ball; 22, inlet; 23, outlet; 24, movable blocking member; 241, T-shaped slide block; 242, blocking block; 243, inclined plane; 244, mounting block; 245, connecting plate; 246, spring one; 247, screw 1. A grooved rod; 248. A ball bearing; 25. A control member; 251. A worm gear; 252. A worm; 253. A control knob; 3. A closed door; 31. A second positioning hole; 32. A second positioning rod; 33. A bevel; 4. A self-propelled transport vehicle; 41. A self-propelled vehicle frame; 411. A mounting groove; 412. A connecting block; 413. A fourth spring; 414. A positioning ball; 42. A raw material frame; 421. A first positioning hole; 422. A first positioning rod; 423. A magnet sheet; 424. A lifting plate; 425. A second spring; 426. A raw material placement box; 427. A ball slot; 43. A guide member; 431. A guide rod; 432. A guide block. DETAILED DESCRIPTION

[0049] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0050] The energy-saving fruit and vegetable tunnel dryer provided in the present embodiment is mainly used to solve the problem that in the existing tunnel dryers, the door of the drying chamber usually needs to be opened frequently when the drying vehicle enters and exits the drying chamber, which causes a large amount of heat loss, not only reduces the drying efficiency, but also increases energy consumption. For example, the tunnel-type fruit and vegetable drying room described in patent CN106196968B improves the drying uniformity through the design of the circulating air duct and the circulating fan, but the frequent opening of the door is still a significant source of heat loss during the entry and exit of the drying vehicle; for example, the high-efficiency hot air tunnel circulation fruit and vegetable dryer described in patent CN108158002B realizes the continuous transportation of fruit and vegetable raw materials, but the doors on both sides of the dryer need to be always open, which also causes a large amount of heat loss. The following technical solutions are provided, which will be combined with Figure 1-Figure 20 Make a detailed description:

[0051] Embodiment 1:

[0052] An energy-saving fruit and vegetable tunnel drying machine mainly comprises an annular guide rail mechanism 1, a tunnel-type drying chamber body 2, a plurality of closed doors 3, and a self-propelled transport vehicle 4 arranged on the annular guide rail mechanism 1 and performing a circular motion along the annular guide rail mechanism 1, wherein:

[0053] The annular guide rail mechanism 1 is composed of two straight guide rail assemblies 11 and two symmetrically arranged arc guide rail assemblies 12, forming a closed loop to ensure that the self-propelled transport vehicle 4 can circulate along the guide rails;

[0054] There are two drying bin bodies 2, which correspond to the two straight guide rail assemblies 11 respectively. Closing plates 21 are provided at both ends of the drying bin body 2, and the two closing plates 21 are respectively provided with an inlet 22 and an outlet 23. The cross-sectional sizes of the inlet 22 and the outlet 23 are consistent. The self-propelled transport vehicle 4 carries the fruit and vegetable raw materials into the interior of the drying bin body 2 from the inlet 22 on one of the closing plates 21. After the fruit and vegetable raw materials are dried, the self-propelled transport vehicle 4 goes out through the outlet 23 on the other closing plate 21. Closing doors 3 are movably installed on both the inlet 22 and the outlet 23, and a movable blocking member 24 for blocking part of the closing door 3 is provided on the closing plate 21;

[0055] Any number of closed doors 3 can be stacked and hung;

[0056] The self-propelled transport vehicle 4 includes a self-propelled frame 41 and a material frame 42 rotatably mounted on the top of the self-propelled frame 41. Both ends of the material frame 42 can be hung with closed doors 3. When the self-propelled transport vehicle 4 is located on the straight guide rail assembly 11 and approaches the inlet 22, two closed doors 3 are hung on the rear end of the material frame 42. When the self-propelled transport vehicle 4 passes through the drying bin body 2, the front end of the material frame 42 sequentially suspends and takes away the closed doors 3 on the inlet 22 and the outlet 23, and simultaneously places the two closed doors 3 at the rear end on the inlet 22 and the outlet 23 from the outside to the inside. When the self-propelled transport vehicle 4 passes through the arc guide rail assembly 12, the material frame 42 turns 180 degrees to exchange the front end with the rear end, so as to prepare for the drying work of the other drying bin body 2. The width of the material frame 42 is the same as the width of the closed door 3, thereby ensuring the tightness of the closure.

[0057] The device significantly reduces heat loss during the drying process, improves thermal efficiency, reduces energy consumption, meets the environmental protection goal of energy conservation and emission reduction, and greatly reduces enterprise costs. At the same time, due to the automated cyclic movement of the self-propelled transport vehicle 4, the continuity of the production process is enhanced, manual intervention is reduced, labor intensity is reduced, and the accuracy and repeatability of the operation are improved. In addition, the drying bin body 2 is always in a closed state during the entire drying process, providing a uniform and controllable drying environment for fruits and vegetables, which helps to improve the quality of the dried products.

[0058] In order to ensure that the raw material frame 42 can accurately hang the closed door 3 away, and at the same time ensure that two adjacent closed doors 3 can be stacked on each other, please refer to Figure 5 , Figure 8 , Fig.10 , Fig.17 and Fig.19, one end of the raw material frame 42 is constructed with four positioning holes 1 421 distributed in a rectangular shape, the other end of the raw material frame 42 is constructed with four positioning rods 1 422, one surface of the closed door 3 is constructed with four positioning holes 2 31, and the other surface of the closed door 3 is constructed with four positioning rods 2 32, the four positioning rods 1 422 are respectively movably inserted into the inside of the four positioning holes 2 31, and the four positioning rods 2 32 are respectively movably inserted into the inside of the four positioning holes 1 421 or the inside of the four positioning holes 2 31, ensuring the precise docking of the raw material frame 42 and the closed door 3, and the precise docking between the closed door 3 and the closed door 3, both ends of the raw material frame 42 are embedded with magnet sheets 423, and the two surfaces of the closed door 3 are magnetic. This design can ensure that the inner closed door 3 is more tightly adsorbed on one end of the raw material frame 42, so that the outer closed door 3 is first placed at the inlet 22, and then the inner closed door 3 is placed at the outlet 23;

[0059] For the specific structure, please refer to Figure 5 When the self-propelled transport vehicle 4 moves toward the entrance 22, the four positioning rods 1 422 at the front end of the self-propelled transport vehicle 4 are respectively inserted into the four positioning holes 2 31 on one side of the closed door 3 at the entrance 22, and the self-propelled transport vehicle 4 moves along the straight guide rail assembly 11 to take away the closed door 3 at the entrance 22. During the movement, the raw material frame 42 closes the entrance 22 to reduce heat loss. When the tail end of the self-propelled transport vehicle 4 reaches the entrance 22, the inner closed door 3 is adsorbed on the raw material frame 42, and the inner closed door 3 overcomes the blocking force of the movable blocking member 24 at the entrance 22 and passes through the entrance 22. Since the outer closed door 3 and the inner closed door 3 are only separated by four positioning rods 1 22, the inner closed door 3 is closed by the outer closed door 3. The second positioning rod 32 is inserted into the inside of the four positioning holes 31, and the connection force is small, so it will be blocked by the movable blocking member 24 at the inlet 22, so that it is placed at the inlet 22 to close the inlet 22. When the fruit and vegetable raw materials on the self-propelled transport vehicle 4 are dried, the self-propelled transport vehicle 4 moves to the outlet 23. At this time, the closed door 3 at the front end is matched and superimposed with the closed door 3 at the outlet 23, and the closed door 3 at the outlet 23 is taken away until the tail end of the self-propelled transport vehicle 4 corresponds to the outlet 23. At this time, the magnetic force cannot overcome the blocking force of the movable blocking member 24 at the outlet 23. At this time, the closed door 3 at the tail end is stopped, and the outlet 23 is closed, completing the entire drying work, while effectively reducing the heat loss and saving energy;

[0060] In this embodiment, the design of the closed door 3 and the movable blocking member 24 is particularly important. Figure 5 , Figure 7 , Figure 8 , Fig. 9 and Fig.11, both sides of the two surfaces of the closed door 3 are constructed with beveled edges 33, and a horizontal T-shaped slide groove 211 is cleverly constructed on one side of the closed plate 21. The movable blocking member 24 includes a T-shaped slider 241 slidably installed inside the T-shaped slide groove 211, and a blocking block 242 is fixed on one side of the T-shaped slider 241. The side of the blocking block 242 close to the entrance 22 or the exit 23 is constructed as a bevel 243 corresponding to the beveled edge 33, ensuring that when the closed door 3 is placed on the entrance 22 or the exit 23, the beveled edge 33 can fit tightly with the bevel 243 to form a seal, and at the same time, it can ensure that the self-propelled transport vehicle 4 can take away or hang up the closed door 3, and the inner part of the T-shaped slide groove 211 A mounting block 244 is fixed to the bottom, and two connecting plates 245 sliding on the T-shaped slide groove 211 are arranged between the mounting block 244 and the blocking block 242. A spring 246 is connected between the two connecting plates 245 to provide stable elastic support. One of the connecting plates 245 contacts the blocking block 242. A threaded rod 247 is rotatably mounted on the mounting block 244, and the other connecting plate 245 is threadedly sleeved on the threaded rod 247. A control member 25 for controlling the rotation of the threaded rod 247 is arranged on the closing plate 21. When one of the closed doors 3 at the rear end of the self-propelled transport vehicle 4 is placed on the inlet 22 or the outlet 23, the bevel 33 fits with the bevel 243.

[0061] During the specific operation, the front end of the self-propelled transport vehicle 4 pushes the closed door 3 on the entrance 22 or the exit 23 to move. At this time, the bevel 33 of the closed door 3 contacts the bevel 243, pushing the blocking block 242 to overcome the elastic force of the spring 1 246 to move, so that the closed door 3 passes through the blocking block 242 and is taken away. At the same time, the closed door 3 at the rear end of the self-propelled transport vehicle 4 cannot overcome the elastic force of the spring 1 246 and will be blocked by the blocking block 242, so that it is placed on the entrance 22 or the exit 23. Figure 7 As shown, when the closed door 3 moves to the right, the beveled edge 33 on the closed door 3 conflicts with the beveled surface 243 of the blocking block 242. As the closed door 3 continues to move, the blocking block 242 is pushed to move along the T-shaped slide groove 211 until the blocking block 242 is completely moved to not overlap with the inlet 22 or the outlet 23. At this time, the straight side of the closed door 3 fits and slides along the straight side of the blocking block 242, and the closed door 3 passes over the blocking block 242. Another advantage of constructing the beveled edge 33 is that in the initial state, the two closed doors 3 at the rear end of the self-propelled transport vehicle 4 fit together, and the beveled edges 33 of the two closed doors 3 on the fit side will form a triangular space. When the closed door 3 on the inner side of the rear end of the self-propelled transport vehicle 4 passes over the blocking block 242, the blocking block 242 will be inserted into this triangular space under the elastic force of the spring 1 246, thereby blocking the closed door 3 on the outside;

[0062] The advantage of designing the movable blocking member 24 into such a structure is that the threaded rod 247 is controlled to rotate by the control member 25, thereby driving the threaded connecting plate 245 to move along the T-shaped slide groove 211, so that the distance between the two connecting plates 245 can be adjusted, thereby changing the size of the elastic force of the spring 246 that needs to be overcome when the blocking block 242 moves. By adjusting the size of the elastic force at the entrance 22 to a size that can block the outer closed door 3 but cannot block the inner closed door 3 adsorbed by the magnet sheet 423, the self-propelled transport vehicle 4 can accurately place the outer closed door 3 at the rear end at the entrance 22 for closing. By adjusting the size of the elastic force at the exit 23 to a size that can block the inner closed door 3, the inner closed door 3 can be accurately blocked and placed at the exit 23 to form a closure.

[0063] For details, please refer to Figure 8 and Fig.11 The control member 25 includes a worm wheel 251 fixedly sleeved on one end of the threaded rod 247, a worm 252 meshing with the worm wheel 251 is rotatably mounted on the closing plate 21, and a control knob 253 is fixed on the end of the worm 252. The worm 252 is driven to rotate by rotating the control knob 253, and the worm 252 drives the worm wheel 251 to rotate, so that the threaded rod 247 rotates, and the distance between the two connecting plates 245 is adjusted, thereby changing the size of the blocking block 242 overcoming the elastic force of the spring 246. At the same time, the design of the worm wheel 251 and the worm 252 also has another advantage. Since the worm wheel 251 and the worm 252 are self-locking, the device will not cause the change of the elastic force of the spring 246 due to the rotation of the threaded rod 247 after a long period of use, which can increase the service life of the device and reduce the maintenance frequency of maintenance personnel.

[0064] In order to further improve the accuracy of operation, scale lines 212 corresponding to another connecting plate 245 are specially constructed on one side of the closing plate 21. These scale lines 212 provide a clear reference for the operator, so that each adjustment can reach the predetermined position, ensuring the accurate placement of the closing door 3 during the drying process.

[0065] It should be noted that two movable blocking members 24 are provided on the same closing plate 21, and the two movable blocking members 24 are respectively located on opposite sides of the inlet 22 or the outlet 23. The two movable blocking members 24 at the inlet 22 can block the closed door 3 on the outside of the self-propelled transport vehicle 4 and cannot overcome the magnetic force to block the closed door 3 on the inside. The two movable blocking members 24 at the outlet 23 can overcome the magnetic force to block the closed door 3 on the inside of the self-propelled transport vehicle 4.

[0066] The two movable blocking members 24 at the inlet 22 are specially configured to block the closed door 3 outside the self-propelled transport vehicle 4, thereby ensuring the sealing of the drying chamber at the inlet 22 and preventing the loss of heat;

[0067] At the outlet 23, the two movable blocking members 24 have different functions. They are designed to overcome the magnetic force and actively block the closed door 3 inside the self-propelled transport vehicle 4. This design allows that at the end of the drying process, when the self-propelled transport vehicle 4 carries the dried fruit and vegetable raw materials out of the drying bin body 2 and passes through the outlet 23, the movable blocking members 24 can promptly fix the closed door 3 inside in place, ensuring the sealing of the outlet 23 and preventing heat from being lost from the outlet 23;

[0068] This design not only improves the drying efficiency, but also ensures the continuity and uniformity of the entire drying process. Through the precise control of the movable blocking member 24 at different positions, the thermal environment in the drying chamber can be effectively maintained both at the beginning and at the end of drying, thereby reducing energy consumption and improving the quality of fruit and vegetable drying. In addition, this design also enhances the degree of automation of the equipment, reduces manual intervention, reduces the complexity and labor intensity of operations, and improves the safety and reliability of operations.

[0069] The design of the straight rail assembly 11 is crucial to the stability and operating efficiency of the energy-saving fruit and vegetable tunnel dryer. For details, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Fig. 9 The straight guide rail assembly 11 is composed of two parallel guide plates 111. The drying bin body 2 is arranged on the two guide plates 111. The distance between the two guide plates 111 on one side close to each other is the same as the width of the inlet 22, the outlet 23 and the closed door 3, which ensures that the closed door 3 can be perfectly docked with the inlet 22 and the outlet 23 of the drying bin body 2 to achieve sealing and prevent heat loss. In addition, this precise size matching also helps the self-propelled transport vehicle 4 to run smoothly on the straight guide rail assembly 11, whether it is loading raw materials into the drying bin or transporting dried fruits and vegetables out, it can ensure the continuity and uniformity of the transportation process.

[0070] The arc guide assembly 12 is a key structure in the energy-saving fruit and vegetable tunnel drying machine, which can achieve the continuity of drying work. For details, please refer to Figure 1 , Figure 2 , Figure 4 , Fig.14 , Fig.15 and Fig. 20The arc guide rail assembly 12 includes an arc guide frame 121, which is erected on the work surface through a plurality of support frames 122, ensuring the stability and load-bearing capacity of the entire arc guide rail assembly 12. The end of the arc guide frame 121 is located between the two guide plates 111. Such a layout allows the self-propelled transport vehicle 4 to smoothly transition between straight lines and curves, ensuring the continuity and smoothness of the transportation process. The height of the arc guide frame 121 is slightly higher than the height of the self-propelled transport vehicle 4 and the closed door 3, providing sufficient margin for the vertical space during transportation and avoiding any possible interference or collision. The bottom side of the arc guide frame 121 is constructed with an arc groove 123, and a liftable guide member 43 is provided inside the raw material frame 42 to cooperate with the arc groove 123. When the self-propelled transport vehicle 4 moves along the arc guide rail assembly 12, the guide member 43 can move in the arc groove 123, ensuring that the raw material frame 42 can remain stable when turning and maintain the correct moving path.

[0071] For further information, see Fig.14 , Fig.15 , Fig.16 , Fig.17 , Fig.18 and Fig. 20 The top of the raw material frame 42 is structured with an opening to facilitate loading and unloading of fruit and vegetable raw materials to be dried. A lifting plate 424 is movably arranged inside the raw material frame 42. A plurality of evenly distributed springs 425 are connected between the bottom of the lifting plate 424 and the inner bottom wall of the raw material frame 42. A raw material placement box 426 is placed on the top of the lifting plate 424. The guide member 43 includes a guide rod 431 fixed to the middle of the lifting plate 424 and located in the middle of the self-propelled transport vehicle 4, which ensures the symmetry and balance of the entire structure. A guide block 432 movably arranged inside the arc groove 123 is fixed to the top of the guide rod 431. When the raw material placement box 426 is placed on the lifting plate 424, the guide block 432 descends to the inside of the raw material frame 42. When the raw material placement box 426 is removed from the lifting plate 424, the guide block 432 rises to be flush with the arc groove 123.

[0072] In particular, the advantage of such a design is that when the self-propelled transport vehicle 4 is located on the straight guide rail assembly 11 and close to the inlet 22, the fruit and vegetable raw materials to be dried are placed inside the raw material placement box 426, and then the raw material placement box 426 is placed inside the raw material frame 42 and placed on the lifting plate 424. At this time, the lifting plate 424 is acted upon by gravity, overcomes the elastic force of the plurality of springs 425, and drives the guide block 432 to descend to the inside of the raw material frame 42, without affecting the self-propelled transport vehicle 4 from moving to the inside of the drying bin body 2. During the drying process, when the self-propelled transport vehicle 4 comes out of the exit 23, the dried fruit and vegetable raw materials together with the raw material placement box 426 are taken out from the raw material frame 42. At this time, the lifting plate 424 rises under the elastic force of a plurality of springs 425, driving the guide block 432 to rise to be flush with the arc groove 123. At this time, when the self-propelled transport vehicle 4 moves from the straight guide rail assembly 11 to the arc guide rail assembly 12, the guide block 432 accurately moves from one end of the arc groove 123 to the inside of the arc groove 123 for guiding to ensure continuous operation.

[0073] For further information, see Fig.15 and Fig.16 An arc-shaped rack 124 is fixed on the inner wall of the arc-shaped groove 123. This design is crucial for achieving accurate steering of the raw material frame 42. The arc-shaped structure of the rack 124 matches the gear shape of the guide block 432. The meshing between them ensures that when the self-propelled transport vehicle 4 moves along the arc guide rail assembly 12, it can drive the raw material frame 42 to smoothly perform a 180-degree steering.

[0074] When the self-propelled transport vehicle 4 moves to the area of ​​the arc groove 123, the guide block 432 will mesh with the rack 124, and the rotational power of the gear will be transmitted through the guide rod 431, thereby driving the entire raw material frame 42 to turn. This process not only ensures the stability of the raw material frame 42 when turning, but also ensures the accuracy and smoothness of the turning.

[0075] This design cleverly utilizes the mechanical transmission principle of the gear and rack 124 to achieve automatic steering of the raw material frame 42 during the drying process, greatly improving the operating efficiency and flexibility of the dryer. At the same time, this automatic steering mechanism also reduces manual intervention, reduces possible errors during operation, and ensures the continuity and uniformity of the drying process.

[0076] See also Figure 1-Figure 20 , especially Figure 1 For reference, the specific operating steps of the device are:

[0077] First, ensure that the self-propelled transport vehicle 4 is located at the starting position of the straight guide rail assembly 11, that is, the left side of the entrance 22, and the self-propelled transport vehicle 4 moves in a counterclockwise direction, and then prepares to load the fruit and vegetable raw materials;

[0078] The operator neatly places the fruit and vegetable raw materials to be dried in the raw material placement box 426, and then places the raw material placement box 426 filled with raw materials on the lifting plate 424 of the raw material frame 42. At this time, the lifting plate 424 adapts to the weight of the raw material placement box 426 under the action of the spring 2 425, and the lifting plate 424 descends, driving the guide block 432 to descend to the inside of the raw material frame 42, not exceeding the height of the raw material frame 42, to ensure that the self-propelled transport vehicle 4 passes through the drying bin body 2 smoothly;

[0079] As the operation begins, the self-propelled transport vehicle 4 slowly moves toward the entrance 22 along the straight guide rail assembly 11. When approaching the entrance 22, the positioning rod 1 422 at the front end of the self-propelled transport vehicle 4 is precisely connected with the positioning hole 2 31 of the closed door 3 at the entrance 22. When the body of the self-propelled transport vehicle 4 moves to the entrance 22, the front end of the self-propelled transport vehicle 4 suspends and takes away the closed door 3 at the entrance 22, and the self-propelled transport vehicle 4 itself seals the entrance 22 until the rear end of the self-propelled transport vehicle 4 moves to the entrance 22. Under the magnetic force of the magnet sheet 423, the closed door 3 on the inner side of the rear end overcomes the elastic force of the spring 1 246 at the entrance 22 and passes through the entrance 22, while the closed door 3 on the outer side of the rear end of the self-propelled transport vehicle 4 is not adsorbed, but only hangs on the closed door 3 on the inner side, so it is blocked by the blocking block 242 and placed at the entrance 22 to close the entrance 22.

[0080] After the self-propelled transport vehicle 4 enters the drying bin body 2, it starts to move forward at a uniform speed along the two guide plates 111 in the drying bin body 2, exposing the fruit and vegetable raw materials in the raw material frame 42 to the hot air evenly for efficient drying. During the drying process, the closed doors 3 at both ends of the drying bin are kept sealed under the control of the movable blocking member 24, ensuring that the heat circulates in the drying bin, achieving uniform drying while preventing heat loss;

[0081] When the self-propelled transport vehicle 4 approaches the exit 23 of the drying bin, the positioning rod 22 on the front inner side of the closed door 3 is precisely connected with the positioning hole 21 on the closed door 3 at the exit 23, and then they are aligned and superimposed, pushing the closed door 3 at the exit 23 to overcome the blocking force of the movable blocking member 24 at the exit 23 and take the closed door 3 away. When the self-propelled transport vehicle 4 moves to the exit 23, it seals the exit 23 by itself to reduce the loss of heat. Until the tail end of the self-propelled transport vehicle 4 moves to the exit 23, the closed door 3 on the inner side of the tail end adsorbed by the magnet sheet 423 cannot overcome the blocking force of the movable blocking member 24 at the exit 23 and is blocked and placed at the exit 23 to seal the exit 23.

[0082] The self-propelled transport vehicle 4 exiting the exit 23 completes the drying process. At this time, the operator removes the raw material placement box 426 on the lifting plate 424, where the dried fruit and vegetable raw materials are placed. At the same time, the lifting plate 424 rises under the elastic force of a plurality of springs 425, driving the guide block 432 to rise, and the guide block 432 rises to be flush with the arc groove 123.

[0083] Subsequently, the self-propelled transport vehicle 4 continues to move from the straight guide rail assembly 11 to the arc guide rail assembly 12, and the guide block 432 moves perfectly to the inside of the arc groove 123 to guide the self-propelled transport vehicle 4 to ensure the correctness of the moving path. When the guide block 432 moves to the rack 124, it will rotate, thereby driving the raw material frame 42 to turn 180 degrees. The raw material frame 42 turns smoothly under the guidance of the guide block 432 in the arc groove 123, and the front end and the rear end are exchanged until the self-propelled transport vehicle 4 moves from the arc guide rail assembly 12 to another straight guide rail assembly 11. At this time, the rear end of the self-propelled transport vehicle 4 is facing away from the entrance 22 of another drying bin body 2, ready for the next round of drying operation, and the process is repeated continuously to ensure the continuity and uniformity of the drying process.

[0084] Through this series of coherent and meticulous operating steps, the dryer not only improves drying efficiency and reduces energy consumption, but also ensures the quality of fruit and vegetable products after drying, achieving energy-saving, environmentally friendly and efficient drying operations.

[0085] Embodiment 2:

[0086] Embodiment 2 is a further optimization of Embodiment 1. For details, please refer to Figure 7 The blocking block 242 is located at one end of the inlet 22 or the outlet 23 and is connected to a plurality of balls 248;

[0087] The addition of these balls 248 provides the blocking block 242 with more flexible adjustment capabilities. When the self-propelled transport vehicle 4 moves at the entrance 22 or the exit 23, or when the self-propelled transport vehicle 4 suspends and takes away the closed door 3 at the entrance 22 or the exit 23, the balls 248 can ensure that the blocking block 242 moves smoothly and makes the movement of the closed door 3 and the self-propelled transport vehicle 4 smoother. This design reduces the wear caused by friction and extends the service life of the equipment.

[0088] Embodiment three:

[0089] Embodiment 3 is a further optimization of Embodiment 1 and Embodiment 2. Fig.12 and Fig.13The closing plate 21 is provided with a plurality of installation grooves 213 connected with the inlet 22 or the outlet 23. An installation block 214 is movably arranged inside the installation groove 213. A spring 215 is connected between the installation block 214 and the inner wall of the installation groove 213. A rolling ball 216 is connected to the end ball of the installation block 214. When the closing door 3 is not placed at the inlet 22 or the outlet 23, a part of the rolling ball 216 is located inside the inlet 22 or the outlet 23.

[0090] The advantage of designing this structure is that the elastic force of spring three 215 pushes the device block 214, and the device block 214 transmits the elastic force to the rolling ball 216, thereby resisting the closed door 3 on the inlet 22 or the outlet 23, thereby improving the stability of the closed door 3 and ensuring the sealing effect. At the same time, the ball connection structure of the rolling ball 216 also reduces the friction with the contact surface of the closed door 3 and the self-propelled transport vehicle 4, thereby extending the service life of the equipment and making the operation smoother and more reliable.

[0091] Embodiment 4:

[0092] Embodiment 4 is a further optimization of Embodiment 1, Embodiment 2 and Embodiment 3. Fig.18 and Fig.19 The top of the self-propelled frame 41 is structured with two mounting grooves 411, which are distributed in a rotating array with the central axis of the self-propelled frame 41, ensuring the stable installation and positioning of the raw material frame 42. A connecting block 412 is movably provided inside the mounting groove 411, and a spring 413 is connected between the connecting block 412 and the inner wall of the mounting groove 411. The end ball of the connecting block 412 is connected with a positioning clamping ball 414. The bottom of the raw material frame 42 is structured with two clamping ball grooves 427, and the two positioning clamping balls 414 are movably clamped inside the two clamping ball grooves 427;

[0093] The advantage of this structural design is that spring four 413 can ensure that the positioning ball 414 is stably stuck in the ball slot 427, thereby ensuring the stability of the raw material frame 42 and enhancing the accuracy and reliability of the entire drying process. Whenever the self-propelled transport vehicle 4 is adjusted through the arc guide rail assembly 12, the two positioning balls 414 are stuck in the two ball slots 427, which can ensure the accuracy of the steering of the raw material frame 42, thereby ensuring the orderly progress of the entire drying process. At the same time, the positioning ball 414 is connected to the connecting block 412 and can roll. When the raw material frame 42 changes direction, it can reduce the wear on the bottom of the raw material frame 42 and improve the service life of the device.

[0094] It should be noted that the specific structures of the drying bin body 2 and the self-propelled frame 41 are all existing technologies and are not the main technical features of the technical problems solved by this solution, so they will not be described in detail. The principles of these components are clear to technical personnel in this field and do not need to be described in detail here.

[0095] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An energy-saving fruit and vegetable tunnel drying machine, comprising an annular guide rail mechanism (1), a tunnel-type drying chamber body (2), a plurality of closed doors (3), and a self-propelled transport vehicle (4) disposed on the annular guide rail mechanism (1) and performing a cyclic motion along the annular guide rail mechanism (1), characterized in that: in: The annular guide rail mechanism (1) is composed of two parallel straight guide rail assemblies (11) and two symmetrically arranged arc guide rail assemblies (12), wherein the two straight guide rail assemblies (11) and the two arc guide rail assemblies (12) form an annular shape; The number of the drying bin bodies (2) is two and they correspond to the two straight guide rail assemblies (11) respectively; closing plates (21) are provided at both ends of the drying bin body (2); an inlet (22) and an outlet (23) are respectively constructed on the two closing plates (21); the closing doors (3) are movably mounted on the inlet (22) and the outlet (23); and a movable blocking member (24) for blocking part of the closing door (3) is provided on the closing plate (21); Any number of the enclosed doors (3) can be stacked and hung; The self-propelled transport vehicle (4) comprises a self-propelled vehicle frame (41) and a material frame (42) rotatably mounted on the top of the self-propelled vehicle frame (41). Both ends of the material frame (42) can be hung with the closed doors (3). When the self-propelled transport vehicle (4) is located on the straight guide rail assembly (11) and approaches the inlet (22), two closed doors (3) are hung on the rear end of the material frame (42). When the self-propelled transport vehicle (4) passes through the drying bin body (2), the front end of the material frame (42) sequentially closes the closed doors (3). The closed doors (3) on the inlet (22) and the outlet (23) are hung and taken away, and at the same time, the two closed doors (3) at the rear end are placed on the inlet (22) and the outlet (23) in sequence from the outside to the inside; when the self-propelled transport vehicle (4) passes through the arc guide rail assembly (12), the material frame (42) is turned 180 degrees to exchange the front end with the rear end, so as to carry out drying work on another drying bin body (2); the width of the material frame (42) is the same as the width of the closed door (3); One end of the raw material frame (42) is configured with four positioning holes (421) distributed in a rectangular shape, and the other end of the raw material frame (42) is configured with four positioning rods (422). One surface of the closed door (3) is configured with four positioning holes (31), and the other surface of the closed door (3) is configured with four positioning rods (32). The four positioning rods (422) are respectively movably inserted into the inside of the four positioning holes (31), and the four positioning rods (32) are respectively movably inserted into the inside of the four positioning holes (421) or the inside of the four positioning holes (31). Both ends of the raw material frame (42) are embedded with magnet sheets (423), and the two surfaces of the closed door (3) are magnetic. Both sides of the two surfaces of the closed door (3) are constructed with beveled edges (33); a horizontal T-shaped slide groove (211) is constructed on one surface of the closed plate (21); the movable blocking member (24) comprises a T-shaped sliding block (241) slidably mounted inside the T-shaped slide groove (211); a blocking block (242) is fixed on one side of the T-shaped sliding block (241); a side of the blocking block (242) close to the inlet (22) or the outlet (23) is constructed as a bevel (243) corresponding to the beveled edge (33); a mounting block (244) is fixed inside the T-shaped slide groove (211); two sliding blocks (244) and the blocking block (242) are arranged between the mounting block (244) and the blocking block (242). The connecting plate (245) on the T-shaped slide groove (211) is provided with a spring (246) between the two connecting plates (245), one of the connecting plates (245) is in contact with the blocking block (242), a threaded rod (247) is rotatably mounted on the mounting block (244), the other connecting plate (245) is threadedly sleeved on the threaded rod (247), and a control member (25) for controlling the rotation of the threaded rod (247) is provided on the closing plate (21), when one of the closing doors (3) at the rear end of the self-propelled transport vehicle (4) is placed on the inlet (22) or the outlet (23), the bevel (33) is in contact with the bevel (243); The control member (25) comprises a worm wheel (251) fixedly sleeved on one end of the threaded rod (247); a worm (252) meshing with the worm wheel (251) is rotatably mounted on the closing plate (21); a control knob (253) is fixed to the end of the worm (252); and a scale line (212) corresponding to the other connecting plate (245) is formed on one surface of the closing plate (21); Two movable blocking members (24) are arranged on the same closing plate (21), and the two movable blocking members (24) are respectively located on opposite sides of the inlet (22) or the outlet (23). The two movable blocking members (24) at the inlet (22) can block the closed door (3) on the outside of the self-propelled transport vehicle (4) and cannot overcome the magnetic force to block the closed door (3) on the inside. The two movable blocking members (24) at the outlet (23) can overcome the magnetic force to block the closed door (3) on the inside of the self-propelled transport vehicle (4).

2. The energy-saving fruit and vegetable tunnel drying machine according to claim 1 is characterized in that: The blocking block (242) is located at one end of the inlet (22) or the outlet (23) and is spherically connected to a plurality of balls (248).

3. The energy-saving fruit and vegetable tunnel drying machine according to claim 1 is characterized in that: The straight guide rail assembly (11) is composed of two parallel guide plates (111), the drying chamber body (2) is arranged on the two guide plates (111), and the distance between the two guide plates (111) on one side close to each other is the same as the width of the inlet (22), the outlet (23) and the closed door (3).

4. The energy-saving fruit and vegetable tunnel drying machine according to claim 3 is characterized in that: The arc guide rail assembly (12) comprises an arc guide frame (121), the arc guide frame (121) being mounted on a work surface via a plurality of support frames (122), the end of the arc guide frame (121) being located between the two guide plates (111), the height of the arc guide frame (121) being slightly higher than the height of the self-propelled transport vehicle (4) and the closed door (3), the bottom side of the arc guide frame (121) being provided with an arc groove (123), and a guide member (43) which can be raised and lowered is provided inside the raw material frame (42).

5. The energy-saving fruit and vegetable tunnel drying machine according to claim 4 is characterized in that: The top of the raw material frame (42) is structured with an opening and a lifting plate (424) is movably arranged inside the raw material frame (42). A plurality of evenly distributed springs (425) are connected between the bottom of the lifting plate (424) and the inner bottom wall of the raw material frame (42). A raw material placement box (426) is placed on the top of the lifting plate (424). The guide member (43) includes a material fixed in the middle of the lifting plate (424) and located in the middle of the self-propelled transport vehicle (4). A guide rod (431), the top of which is fixed with a guide block (432) movably arranged inside the arc-shaped groove (123); when the raw material placement box (426) is placed on the lifting plate (424), the guide block (432) descends to the inside of the raw material frame (42); when the raw material placement box (426) is removed from the lifting plate (424), the guide block (432) rises to be flush with the arc-shaped groove (123).

6. The energy-saving fruit and vegetable tunnel drying machine according to claim 5 is characterized in that: An arc-shaped rack (124) is fixed on the inner wall of the arc-shaped groove (123); the guide block (432) is a gear; when the gear passes through the rack (124), the gear drives the raw material frame (42) to turn 180 degrees through the guide rod (431).

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