Energy-saving drying system for wood core board processing

Abstract

The invention belongs to the technical field of wood product processing, and particularly relates to an energy-saving drying system for wood product core veneer processing, which comprises a drying box, an air outlet cover, an air inlet cover and a recovery pipe, and further comprises a heat exchange mechanism, a heat exchange mechanism, a heat exchange mechanism and a heat exchange mechanism, the auxiliary cleaning mechanism comprises a cleaning part arranged in the hot air channel and a driving part for driving the cleaning part to act, and the driving part is driven by the damp and hot air flowing through the hot air channel; the recycling mechanism is arranged below the heat exchange mechanism and comprises a storage part for collecting materials and a material pushing part for pushing the materials into the storage part; and the warning mechanism is arranged in association with the driving part, and is used for giving out a warning when the storage part is full. Waste heat can be recycled, energy is saved, the filter screen is self-cleaned through airflow, automatic aggregate overflow warning is achieved, and the drying efficiency and the intelligent level are improved.

Description

Technical Field

[0001] This invention belongs to the field of wood product processing technology, and specifically relates to an energy-saving drying system for processing wood product core boards. Background Technology

[0002] Wood core panels are an important component of engineered wood products, furniture, and building decoration materials, and their processing quality directly determines the performance and lifespan of the final product. Drying is a crucial step in the production process of wood core panels, its main purpose being to remove excess moisture from the wood to prevent later deformation, cracking, or mold growth.

[0003] Currently, the commonly used hot air circulation drying system heats air and convects to dry materials. Although the technology is mature, it still has several significant drawbacks in long-term application, resulting in low energy efficiency, increased maintenance costs, and limited automation:

[0004] 1. In traditional drying systems, to maintain the temperature inside the drying chamber, it is typically necessary to continuously exhaust hot, humid waste gas and replenish it with fresh, cool outside air. This exhaust gas carries a significant amount of heat energy, but current technologies often directly release this high-temperature waste gas into the atmosphere without effective waste heat recovery. Simultaneously, the newly replenished cool air requires a large amount of electricity or fuel to reheat to the process temperature. This "direct discharge and direct replenishment" method results in enormous energy waste, leading to high production costs for enterprises and contradicting the current industry trends of green manufacturing and energy conservation and emission reduction.

[0005] 2. During the drying process, the exhaust gas inevitably carries fine sawdust, dust, and other solid impurities detached from the wood. These impurities easily adhere to and accumulate on the surface of the heat exchange channels as they flow through the heat exchanger. As the operating time increases, the impurity layer will form thermal resistance, severely hindering heat exchange efficiency. Furthermore, if the sawdust in the exhaust gas cannot be effectively collected, it will scatter inside the equipment or be released into the environment, resulting in both material waste and pollution of the working environment.

[0006] 3. Existing impurity collection devices are typically simple storage boxes or dust bags, lacking real-time monitoring capabilities for storage levels. Operators cannot easily determine whether the collection container is full. If not emptied in time, a full container can lead to impurities overflowing, polluting the workshop environment, and even blocking ventilation ducts, causing equipment malfunctions or safety hazards. Currently, most methods rely on manual periodic inspections or estimations of cleaning time based on experience, which is inherently delayed. Summary of the Invention

[0007] In view of this, the purpose of this invention is to provide an energy-saving drying system for processing wood core boards, which can recover waste heat and save energy, utilize airflow to self-clean the filter, and automatically provide a full material overflow warning, thereby improving drying efficiency and intelligence.

[0008] The specific technical solution adopted by this invention is as follows:

[0009] An energy-saving drying system for processing wood core boards includes a drying chamber, and an air outlet hood and an air inlet hood respectively disposed at the upper and lower ends of the drying chamber, and further includes:

[0010] A heat exchange mechanism is provided below the drying chamber and is fixedly connected to the air inlet hood. It includes a shell, and a heat exchange component is provided inside the shell. The heat exchange component forms a cold air channel and a hot air channel that are isolated from each other. A filter screen is provided in the hot air channel.

[0011] A recovery pipe is connected between the air outlet hood and the hot air duct inlet of the heat exchange mechanism, and is used to guide the hot and humid gas discharged from the drying box to the hot air duct.

[0012] An auxiliary cleaning mechanism, comprising a cleaning section disposed within a hot air duct and a driving section for driving the cleaning section, the driving section being driven by hot and humid gas flowing through the hot air duct;

[0013] A recycling mechanism, located below the heat exchange mechanism, includes a storage section for collecting materials and a pushing section for pushing materials into the storage section.

[0014] A warning mechanism, which is associated with the drive unit, is used to issue a warning when the storage unit is full.

[0015] In a preferred embodiment, the drying oven is fixedly connected to a bracket, and the bracket has a groove, into which a support plate is inserted.

[0016] In a preferred embodiment, a heat pump is installed at the lower end of the air inlet hood, and the exhaust end of the heat pump is fixedly connected to the cold air outlet on the heat exchange mechanism; an air pump is installed at the upper end of the air outlet hood, and the exhaust end of the air pump is fixedly connected to the recovery pipe.

[0017] In a preferred embodiment, the cleaning unit includes a slide rail fixedly connected to the inner wall of the hot air duct. Multiple scrapers are slidably connected to the slide rail and are fixedly connected to each other by support rods. A compression spring is sleeved on the lower end of the slide rail. A linkage rod is rotatably connected to the top surface of the inner cavity of the hot air duct via a bearing. A linkage gear is fixedly installed on the upper end of the linkage rod, and a disc is fixedly connected to the lower end of the linkage rod. A trapezoidal block is fixedly connected to the bottom surface of the disc.

[0018] In a preferred embodiment, the filter screen is made of metal, is arc-shaped, and is adapted to the scraper.

[0019] In a preferred embodiment, a drive rod is rotatably connected to the hot air duct via a bearing, a fan is fixedly mounted on the drive rod, a drive gear is fixedly mounted on the upper end of the drive rod, and a first bevel gear is fixedly mounted on the lower end of the drive rod.

[0020] In a preferred embodiment, the storage unit includes a storage box disposed below the outer shell. A sealing cover is installed at the lower end of the storage box, and a lifting rod is slidably inserted into the sealing cover. A piston plate is fixedly connected to the upper end of the lifting rod and is slidably connected inside the storage box. A spring is sleeved on the upper end of the lifting rod, and the upper end of the spring is fixedly connected to the piston plate. The lower end of the spring is fixedly connected to the storage box. A hollow cylinder is fixedly connected to the lower end of the lifting rod.

[0021] In a preferred embodiment, the feeding part includes a feeding trough, which is located at the bottom of the hot air channel. Multiple discharge pipes are fixedly connected to the storage box, and the upper ends of the discharge pipes extend into the outer shell and communicate with the feeding trough. A rotating shaft is rotatably connected to the feeding trough through a bearing. A spiral blade is fixedly sleeved on the rotating shaft, and a second bevel gear is fixedly installed at one end of the rotating shaft.

[0022] In a preferred embodiment, the warning mechanism includes a first rotating rod, which is rotatably connected to the housing via a bearing. One end of the first rotating rod extends into the discharge chute and is fixedly connected to a drive rod. A first gear is mounted on the lower end of the first rotating rod. A second rotating rod is rotatably connected to the storage box via a bearing. A second gear is fixedly mounted on the upper end of the second rotating rod, and a striking rod is fixedly connected to the lower end of the second rotating rod.

[0023] In a preferred embodiment, the striking rod is an elastic rod.

[0024] The technical effects achieved by this invention are as follows:

[0025] This invention constructs a hot and cold air isolation exchange channel by setting up a heat exchange mechanism. The system introduces the high-temperature and humid waste gas discharged from the drying chamber into the hot air channel, using the waste heat it carries to preheat the outside fresh air in the cold air channel, and then sends it into the drying chamber after secondary heating by a heat pump. This dual heating mode of "waste heat recovery + heat pump assistance" effectively solves the problem of heat energy waste caused by the direct discharge of high-temperature waste gas in traditional technology, significantly reduces the power consumption required to heat the fresh air to the process temperature, and significantly improves the overall thermal efficiency of the system, meeting the industry requirements of green manufacturing and energy conservation and emission reduction.

[0026] This invention designs a non-powered auxiliary cleaning mechanism. This mechanism directly utilizes the flow energy of exhaust gas passing through the hot air channel to drive the impeller to rotate, which in turn drives a scraper to reciprocate across the filter screen and the hot air channel surface via gear transmission, removing attached impurities in real time. This design eliminates the need for additional motors and electronic control systems, achieving automated online cleaning of the filter screen, preventing thermal resistance caused by impurity accumulation, and avoiding the tedious manual cleaning during downtime, ensuring the drying system remains in a state of high-efficiency ventilation and heat exchange for extended periods.

[0027] This invention integrates a spiral feeder with a mechanical warning device. The scraped impurities fall into the feeding trough under gravity and are automatically pushed to the storage box by spiral blades linked to a fan, achieving centralized collection of impurities. More importantly, the system utilizes the mechanical principle of material accumulation driving piston plate displacement; when the storage box is full, it automatically triggers a rotating striking rod to produce a sound, providing a clear warning to the operator. This design completely changes the traditional model that relies on manual periodic inspections, effectively preventing impurities from overflowing and contaminating the workshop or blocking passageways, significantly reducing maintenance costs and eliminating safety hazards. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a front view of the present invention;

[0031] Figure 3 This is a rear view of the present invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the drying oven of the present invention;

[0033] Figure 5 This is a schematic diagram of the heat exchange mechanism of the present invention;

[0034] Figure 6 This is the present invention. Figure 5 Front sectional view;

[0035] Figure 7 This is the present invention. Figure 5 Side sectional view;

[0036] Figure 8 This is a schematic diagram of the auxiliary cleaning mechanism of the present invention;

[0037] Figure 9 This is the present invention. Figure 8 An enlarged schematic diagram of part A shown in the image;

[0038] Figure 10 This is a schematic diagram of the trapezoidal block of the present invention.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 1. Drying oven; 2. Heat exchange mechanism; 3. Recovery pipe; 31. Air pump; 4. Auxiliary cleaning mechanism; 41. Cleaning section; 42. Drive section; 5. Recovery mechanism; 51. Storage section; 52. Pushing section; 6. Warning mechanism; 7. Bracket; 8. Support plate;

[0041] 11. Air inlet hood; 12. Air outlet hood; 13. Heat pump;

[0042] 21. Outer casing; 22. Heat exchanger; 23. Cold air passage; 24. Hot air passage; 25. Filter screen;

[0043] 411. Slide rail; 412. Scraper; 413. Compression spring; 414. Support rod; 415. Linkage rod; 416. Linkage gear; 417. Disc; 418. Trapezoidal block;

[0044] 421. Drive rod; 422. Wind turbine; 423. Drive gear; 424. First bevel gear;

[0045] 511. Storage box; 512. Sealing cover; 513. Lifting rod; 514. Piston plate; 515. Spring; 516. Hollow cylinder;

[0046] 521. Feed chute; 522. Discharge pipe; 523. Rotating shaft; 524. Spiral blade; 525. Second bevel gear;

[0047] 61. First rotating rod; 62. First gear; 63. Second rotating rod; 64. Second gear; 65. Striking rod. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0049] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] Please see the appendix Figures 1-7 As shown, this embodiment provides an energy-saving drying system for processing wood core boards, including a drying chamber 1, and an air outlet hood 12 and an air inlet hood 11 respectively disposed at the upper and lower ends of the drying chamber 1, and further including:

[0051] Heat exchange mechanism 2 is located below the drying oven 1 and is fixedly connected to the air inlet hood 11. It includes an outer shell 21 (the outer shell 21 is provided with a cold air inlet, a cold air outlet, a hot air inlet and a hot air outlet). A heat exchange component 22 is provided inside the outer shell 21. A cold air channel 23 and a hot air channel 24 are formed in the heat exchange component 22 and are isolated from each other. A filter screen 25 is provided in the hot air channel 24.

[0052] Recovery pipe 3 is connected between the air outlet hood 12 and the hot air inlet of the heat exchange mechanism 2, and is used to guide the hot and humid gas discharged from the drying box 1 to the hot air channel 24.

[0053] The auxiliary cleaning mechanism 4 includes a cleaning part 41 disposed in the hot air channel 24 and a driving part 42 that drives the cleaning part 41 to move. The driving part 42 is driven by the hot and humid gas flowing through the hot air channel 24.

[0054] The recycling mechanism 5 is located below the heat exchange mechanism 2 and includes a storage section 51 for collecting materials and a pusher section 52 for pushing materials into the storage section 51.

[0055] Warning mechanism 6 is associated with drive unit 42 and is used to issue a warning when storage unit 51 is full.

[0056] Secondly, please refer to it again. Figures 1-4The drying oven 1 is fixedly connected to a bracket 7, and a groove is provided on the bracket 7, into which a support plate 8 is inserted. A heat pump 13 is installed at the lower end of the air inlet hood 11, and the exhaust end of the heat pump 13 is fixedly connected to the cold air outlet on the heat exchange mechanism 2. An air pump 31 is installed at the upper end of the air outlet hood 12, and the exhaust end of the air pump 31 is fixedly connected to the recovery pipe 3.

[0057] In this embodiment, the hot and humid air inside the drying chamber 1 is discharged from the top air outlet hood 12 driven by the air pump 31 and introduced into the hot air channel 24 of the heat exchange mechanism 2 via the recovery pipe 3. Simultaneously, fresh air from the outside is drawn in through the inlet of the cold air channel 23 of the heat exchange mechanism 2. Inside the heat exchanger 22, the cold air channel 23 and the hot air channel 24 are isolated from each other but closely adjacent, forming a large heat exchange area. When the high-temperature and high-humidity exhaust gas flows through the hot air channel 24, its heat is transferred through the wall of the heat exchanger 22 to the fresh air flowing through the cold air channel 23, thus preheating the fresh air. The preheated fresh air then enters the heat pump 13 for further heating and is then sent into the drying chamber 1 through the air inlet hood 11, achieving waste heat recovery and energy saving. This significantly reduces the energy required to heat the fresh air to the process temperature, achieving energy saving. After heat exchange, the exhaust gas temperature decreases and is discharged from the system.

[0058] It should be noted that both heat pump 13 and air pump 31 are products that are already publicly available on the market. When selecting models, the requirements of this application should be met as much as possible, provided that the specifications and usage scenarios are suitable. Specific model specifications are not limited here.

[0059] Secondly, please refer to the following as well. Figures 8-10 The cleaning unit 41 includes a slide rail 411, which is fixedly connected to the inner wall of the hot air duct 24. Multiple scrapers 412 are slidably connected on the slide rail 411, and the multiple scrapers 412 are fixedly connected to each other by a support rod 414. A compression spring 413 is sleeved on the lower end of the slide rail 411. A linkage rod 415 is rotatably connected to the top surface of the inner cavity of the hot air duct 24 through a bearing. A linkage gear 416 is fixedly installed on the upper end of the linkage rod 415. A disc 417 is fixedly connected to the lower end of the linkage rod 415. A trapezoidal block 418 is fixedly connected to the bottom surface of the disc 417. The filter screen 25 is made of metal and is arc-shaped, and is adapted to the scrapers 412.

[0060] Secondly, please refer to it again. Figure 8 A drive rod 421 is rotatably connected to the hot air channel 24 via a bearing. A fan wheel 422 is fixedly installed on the drive rod 421. A drive gear 423 is fixedly installed at the upper end of the drive rod 421, and a first bevel gear 424 is fixedly installed at the lower end of the drive rod 421.

[0061] In this embodiment, as the hot and humid gas flows along the hot air channel 24, impurities such as sawdust and dust carried in the gas are intercepted by the arc-shaped filter 25 installed inside the hot air channel 24.

[0062] Simultaneously, the kinetic energy of the flowing hot and humid gas drives the drive unit 42 to operate: the gas blows the impeller 422 to rotate, and the impeller 422 drives the drive rod 421 to rotate. The drive gear 423 at the upper end of the drive rod 421 rotates accordingly, and through the toothed belt drive with the linkage gear 416, drives the linkage rod 415 and the lower end of the disc 417 to rotate. The trapezoidal block 418 fixedly connected to the bottom surface of the disc 417 moves in a circular motion with the disc 417.

[0063] During rotation, the trapezoidal block 418 intermittently contacts the upper end of the support rod 414 and pushes the scraper 412 to slide downwards along the slide rail 411. As it moves, the scraper 412 scrapes the surface of the arc-shaped filter screen 25 and the hot air passage 24, removing wood chips adhering to the filter screen 25. When the trapezoidal block 418 rotates away from the scraper 412, the scraper 412 returns to its original position under the elastic force of the compression spring 413. Multiple scrapers 412 are connected as a whole by the support rod 414, achieving synchronous reciprocating motion, thereby continuously cleaning the filter screen 25 and the inner wall of the hot air passage 24.

[0064] It should be noted that the upper end of the support rod 414 is equipped with ball bearings (not shown in the figure), which can reduce the friction between the support rod 414 and the trapezoidal block 418.

[0065] Please refer to it again. Figure 6 and Figure 7 The storage unit 51 includes a storage box 511, which is located below the outer casing 21. A sealing cover 512 is installed at the lower end of the storage box 511. A lifting rod 513 is slidably inserted into the sealing cover 512. A piston plate 514 is fixedly connected to the upper end of the lifting rod 513 and is slidably connected inside the storage box 511. A spring 515 is sleeved on the upper end of the lifting rod 513 and is fixedly connected to the piston plate 514. The lower end of the spring 515 is fixedly connected to the storage box 511. A hollow cylinder 516 is fixedly connected to the lower end of the lifting rod 513.

[0066] Please refer to it again. Figures 6-8 The feeding section 52 includes a feeding trough 521, which is located at the bottom of the hot air channel 24. Multiple discharge pipes 522 are fixedly connected to the storage box 511, and the upper end of the discharge pipes 522 extends into the outer shell 21 and communicates with the feeding trough 521. A rotating shaft 523 is rotatably connected to the feeding trough 521 through a bearing. A spiral blade 524 is fixedly sleeved on the rotating shaft 523, and a second bevel gear 525 is fixedly installed at one end of the rotating shaft 523.

[0067] In this embodiment, the wood chips removed by the scraper 412 fall into the discharge trough 521 at the bottom of the hot air channel 24 under gravity. When the drive rod 421 of the drive unit 42 rotates, the first bevel gear 424 and the second bevel gear 525 at its lower end mesh and drive the rotating shaft 523 and the spiral blade 524 to rotate. The spiral blade 524 pushes the wood chips in the discharge trough 521 into the discharge pipe 522, and then transports them to the storage box 511 through the discharge pipe 522.

[0068] As sawdust continuously enters the storage box 511, the piston plate 514 inside the box gradually moves downward under the pressure of the accumulated sawdust, compressing the spring 515. When the piston plate 514 descends, it drives the lifting rod 513 and the hollow cylinder 516 to descend synchronously.

[0069] Please refer to it again. Figure 7 The warning mechanism 6 includes a first rotating rod 61, which is rotatably connected to the housing 21 via a bearing. One end of the first rotating rod 61 extends into the feed chute 521 and is fixedly connected to the drive rod 421. A first gear 62 is installed at the lower end of the first rotating rod 61. A second rotating rod 63 is rotatably connected to the storage box 511 via a bearing. A second gear 64 is fixedly installed at the upper end of the second rotating rod 63. A striking rod 65, which is an elastic rod, is fixedly connected to the lower end of the second rotating rod 63.

[0070] In this embodiment, when the storage box 511 is nearly full of sawdust, the piston plate 514 descends to a preset position, and the hollow cylinder 516 also descends to the height of the striking rod 65. At this time, the rotation of the drive unit 42 is transmitted to the second rotating rod 63 through the first rotating rod 61, the first gear 62, and the second gear 64, causing the striking rod 65 to rotate continuously. During its movement, the rotating striking rod 65 contacts and collides with the hollow cylinder 516, producing a sound, thereby issuing a warning signal to the operator that "the storage box 511 is full and needs to be cleaned." After receiving the warning, the operator can open the sealing cover 512 to clean the sawdust in the storage box 511.

[0071] It should be noted that the storage box 511 and the sealing cover 512 are detachably connected, for example, by bolts, clips, etc., and the specific connection method is not limited here. Since the striking rod 65 is an elastic rod, it can produce a crisper sound when struck and avoid rigid damage.

[0072] The working principle of this invention is as follows:

[0073] During system operation, the hot and humid exhaust gas generated by the drying chamber 1 is introduced into the hot air channel 24 of the heat exchange mechanism 2 through the recovery pipe 3. Its heat is used to preheat the fresh air flowing in from the cold air channel 23 through the heat exchange component 22, achieving energy saving. At the same time, the exhaust gas flow drives the impeller 422 to rotate, which in turn drives the scraper 412 of the cleaning part 41 to scrape the filter screen 25 in the hot air channel 24 repeatedly to remove the intercepted wood chips. The scraped wood chips fall into the bottom discharge trough 521 and are pushed into the storage box 511 by the spiral blades 524 driven by the same drive rod 421 through the bevel gear set. As the wood chips accumulate, the piston plate 514 in the storage box 511 is pressed down. When the storage is about to be full, the piston plate 514 drives the hollow cylinder 516 to descend. The rotational power of the drive rod 421 is transmitted to the striking rod 65, which rotates and makes a sound, realizing an automatic full warning.

[0074] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0075] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An energy-saving drying system for processing wood core boards, comprising a drying chamber (1), and an air outlet hood (12) and an air inlet hood (11) respectively disposed at the upper and lower ends of the drying chamber (1), characterized in that, Also includes: The heat exchange mechanism (2) is located below the drying box (1) and is fixedly connected to the air inlet hood (11). It includes a shell (21), and a heat exchange component (22) is provided inside the shell (21). A cold air channel (23) and a hot air channel (24) are formed in the heat exchange component (22), which are isolated from each other. A filter screen (25) is provided in the hot air channel (24). The recovery pipe (3) is connected between the air outlet hood (12) and the hot air inlet of the heat exchange mechanism (2) to guide the hot and humid gas discharged from the drying box (1) to the hot air channel (24). The auxiliary cleaning mechanism (4) includes a cleaning part (41) disposed in the hot air channel (24) and a driving part (42) for driving the cleaning part (41) to move. The driving part (42) is driven by the hot and humid gas flowing through the hot air channel (24). The recycling mechanism (5) is located below the heat exchange mechanism (2) and includes a storage section (51) for collecting materials and a pusher section (52) for pushing materials into the storage section (51). Warning mechanism (6), which is associated with drive unit (42), is used to issue a warning when storage unit (51) is full.

2. The energy-saving drying system for processing wood core boards according to claim 1, characterized in that: The drying oven (1) is fixedly connected to a bracket (7), and a groove is provided on the bracket (7), and a support plate (8) is inserted into the groove.

3. The energy-saving drying system for processing wood core boards according to claim 1, characterized in that: A heat pump (13) is installed at the lower end of the air inlet hood (11), and the exhaust end of the heat pump (13) is fixedly connected to the cold air outlet on the heat exchange mechanism (2). An air pump (31) is installed at the upper end of the air outlet hood (12), and the exhaust end of the air pump (31) is fixedly connected to the recovery pipe (3).

4. The energy-saving drying system for processing wood core boards according to claim 1, characterized in that: The cleaning unit (41) includes a slide rail (411), which is fixedly connected to the inner wall of the hot air channel (24). Multiple scrapers (412) are slidably connected on the slide rail (411), and the multiple scrapers (412) are fixedly connected to each other by a support rod (414). A compression spring (413) is sleeved on the lower end of the slide rail (411). A linkage rod (415) is rotatably connected to the top surface of the inner cavity of the hot air channel (24) through a bearing. A linkage gear (416) is fixedly installed on the upper end of the linkage rod (415). A disc (417) is fixedly connected to the lower end of the linkage rod (415). A trapezoidal block (418) is fixedly connected to the bottom surface of the disc (417).

5. The energy-saving drying system for processing wood core boards according to claim 4, characterized in that: The filter screen (25) is made of metal and is arc-shaped, and is adapted to the scraper (412).

6. The energy-saving drying system for processing wood core boards according to claim 1, characterized in that: A drive rod (421) is rotatably connected to the hot air channel (24) via a bearing. A fan wheel (422) is fixedly installed on the drive rod (421). A drive gear (423) is fixedly installed at the upper end of the drive rod (421), and a first bevel gear (424) is fixedly installed at the lower end of the drive rod (421).

7. The energy-saving drying system for processing wood core boards according to claim 6, characterized in that: The storage unit (51) includes a storage box (511), which is located below the outer shell (21). A sealing cover (512) is installed at the lower end of the storage box (511). A lifting rod (513) is slidably inserted into the sealing cover (512). A piston plate (514) is fixedly connected to the upper end of the lifting rod (513), and the piston plate (514) is slidably connected inside the storage box (511). A spring (515) is sleeved on the upper end of the lifting rod (513), and the upper end of the spring (515) is fixedly connected to the piston plate (514). The lower end of the spring (515) is fixedly connected to the storage box (511). A hollow cylinder (516) is fixedly connected to the lower end of the lifting rod (513).

8. The energy-saving drying system for processing wood core boards according to claim 7, characterized in that: The feeding part (52) includes a feeding trough (521), which is located at the bottom of the hot air channel (24). The storage box (511) is fixedly connected to a plurality of discharge pipes (522), and the upper end of the discharge pipes (522) extends into the interior of the outer shell (21) and communicates with the feeding trough (521). A rotating shaft (523) is rotatably connected to the feeding trough (521) through a bearing. A spiral blade (524) is fixedly sleeved on the rotating shaft (523), and a second bevel gear (525) is fixedly installed at one end of the rotating shaft (523).

9. The energy-saving drying system for processing wood core boards according to claim 8, characterized in that: The warning mechanism (6) includes a first rotating rod (61), which is rotatably connected to the outer shell (21) via a bearing. One end of the first rotating rod (61) extends into the feed trough (521) and is fixedly connected to the drive rod (421). A first gear (62) is installed at the lower end of the first rotating rod (61). A second rotating rod (63) is rotatably connected to the storage box (511) via a bearing. A second gear (64) is fixedly installed at the upper end of the second rotating rod (63). A striking rod (65) is fixedly connected at the lower end of the second rotating rod (63).

10. An energy-saving drying system for processing wood core boards according to claim 9, characterized in that: The striking rod (65) is an elastic rod.

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