Environment-friendly artificial board drying machine

Abstract

The application discloses an environment-friendly artificial board drying machine and relates to the technical field of artificial board drying. The application comprises a drying bin and a drying rack for placing artificial boards, and an exhaust structure is installed on the side wall of the drying bin; the drying rack is provided with air blowing structures above and below any artificial board; the air blowing structures are connected with a gas supply tank assembly in communication; the gas supply tank assembly comprises a gas supply tank and a gas return tank which are connected through a heating pipeline; the air blowing structures and the gas supply tank are connected in communication through a gas supply pipe provided with a gas pump; and the gas return tank and the exhaust structure are connected in communication through a gas return pipe. The gas supply tank assembly is arranged to control the internal circulation of drying hot air in the gas supply tank assembly and the drying bin, the exhaust structure is internally provided with a formaldehyde adsorbent to absorb and treat the formaldehyde gas volatilized from the artificial boards during the drying process, the content of formaldehyde in the artificial boards after production is reduced, and the internal circulation of drying hot air is realized.

Description

An environmentally friendly wood-based panel dryer Technical Field

[0001] This invention belongs to the field of artificial board drying technology, and in particular relates to an environmentally friendly artificial board dryer. Background Technology

[0002] Wood-based panels are made from wood, wood fibers, wood chips or other plant fibers as raw materials, which are mechanically broken down into different units. After the glue is sprayed, the wood-based panels need to be dried.

[0003] For example, CN205808022U discloses a drying device for engineered wood products, which includes a semi-circular drying trough on the upper and lower plates. The drying trough is equipped with heating wires, and the drying is carried out by heat radiation. However, this method of drying by heat radiation alone has the problem of low drying efficiency. Based on this, CN202582089U discloses a board drying device, which includes a frame, conveying rollers between the two sides of the frame, an air heating device on the frame, a fan connected to the air outlet of the air heating device, and an air duct located between the conveying rollers and connected to the fan for blowing air onto the board. During the drying process, the hot air used for drying will be released into the air. Since engineered wood products contain formaldehyde gas, the formaldehyde gas will be present around the production equipment for a long time, which will pollute the environment and affect the surrounding workers. Summary of the Invention

[0004] The purpose of this invention is to provide an environmentally friendly wood-based panel dryer. By setting up an air supply box assembly, the drying hot air is controlled to achieve internal circulation within the air supply box assembly and the drying chamber. Furthermore, the formaldehyde adsorbent installed in the exhaust structure absorbs and treats the formaldehyde gas volatilized from the wood-based panel during the drying process, thus solving the problem of existing formaldehyde gas escaping into the air and affecting the production equipment or the surrounding environment of the production workshop.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to an environmentally friendly wood-based panel dryer, comprising a drying chamber and a drying rack for placing wood-based panels, wherein the wood-based panels are arranged in layers with gaps; the opening end of the drying chamber is sealed with a sealing door; during drying, the drying rack is placed inside the drying chamber; an exhaust structure is installed on the side wall of the drying chamber; an air blowing structure is provided on the drying rack above and below any of the wood-based panels; the air blowing structure is connected to an air supply box assembly, the air supply box assembly including an air supply box and a return air box connected by a heating pipe; the air blowing structure and the air supply box are connected by an air delivery pipe equipped with an air pump, and the return air box and the exhaust structure are connected by a return air pipe;

[0007] The exhaust structure includes an absorption treatment box and a drying box that are interconnected. The absorption treatment box is filled with liquid or solid formaldehyde adsorbent, and an air inlet is provided on one side of the absorption treatment box. The drying box is filled with desiccant and is connected to the return air box.

[0008] Furthermore, the top of the absorption treatment box is provided with an opening A and a cover plate A is provided at the opening A. A partition plate A is provided on one side of the cover plate A, and an exhaust port is provided on the other side of the absorption treatment box. A cover with a top opening is provided on the inner side wall of the absorption treatment box at the exhaust port. A perforated plate is connected between the partition plate A and the inner side wall of the absorption treatment box where the air inlet is provided. A rigid pipe is connected to the exhaust port. The top of the drying box is open and a cover plate B is provided at the opening. A connector connected to the return air pipe is provided at the cover plate B. A partition plate B is provided inside the drying box. Two areas are formed between the partition plate B and the inner wall of the drying box. A support ring is provided at the top of the area near the rigid pipe, and a sealing plate A is fitted on the support ring.

[0009] Furthermore, the formaldehyde adsorbent is in liquid form; a semiconductor cooling block is arranged along the length of the rigid tube; water-blocking protrusions are provided at both ends of the rigid tube; the outer bottom side of the rigid tube is connected to a collection bag through a flexible hose A, and the bottom of the collection bag is connected to the bottom of the absorption and treatment box through a flexible hose B, with a valve or butterfly clamp provided on the flexible hose B; at least one connecting sleeve is provided at the bottom of the rigid tube, a locking bolt is provided on the connecting sleeve, and a connecting post is provided on the collection bag for insertion into the connecting sleeve.

[0010] Furthermore, the bottom end of the cover is provided with a reflux hole group, and a sealing structure is provided in conjunction with the reflux hole group; the sealing structure includes a sealing plate B and a guide rod connected to the sealing plate B and driving the sealing plate B to move up and down; the outer bottom side or inner and outer bottom side of the cover is recessed to form a groove, the reflux hole group includes a guide hole provided on the outer bottom side of the groove, and a reflux hole is provided on the outer bottom side of the groove located around the guide hole; the bottom end of the guide rod is connected to a horizontal rod, and the other end of the horizontal rod is connected to a vertical rod that penetrates the perforated plate and has a handle at the top;

[0011] The reflux orifice (2093) can be made open using one of the following three methods:

[0012] When the horizontal bar abuts against the bottom side of the absorption and treatment box, the sealing plate B is located on the bottom side of the cover.

[0013] Alternatively, when an elastic telescopic member is connected between the horizontal bar and the bottom side of the absorption and treatment box, the sealing plate B is located below the cover, and the elastic telescopic member is in its natural state, at which time the sealing plate B abuts against the bottom side of the cover.

[0014] Alternatively, when the overall density of the horizontal rod, vertical rod, and guide rod is lower than the density of the liquid formaldehyde adsorbent, the sealing plate B is located below the cover, and when the liquid level in the absorption treatment tank is higher than the bottom side of the cover, the sealing plate B is pressed against the bottom side of the cover.

[0015] Furthermore, the drying rack includes two parallel supports, and a plurality of support structures for supporting the artificial board and the air blowing structure are connected from top to bottom between the two supports; the support structure includes a plurality of connecting rods spaced apart, and a plurality of support rollers are rotatably arranged with equal gaps on the outer side of the connecting rods; the air blowing structure consists of a plurality of air blowing pipes arranged between the two supports, and a connecting rod is provided between any two adjacent air blowing pipes; the bottom and top of each air blowing pipe are provided with air blowing ports with trapezoidal cross-sections along the length direction, and the length of the air blowing port is greater than the width of the artificial board; the blowing range of the air blowing port is equal to the distance between two adjacent connecting rods.

[0016] Furthermore, the support includes two columns, with a crossbar connecting the two columns and cooperating with the supporting structure. The ends of the connecting rod and the air blowing pipe are fixed to one side of the crossbar. Positioning blocks are provided at both ends of each column, and positioning holes are provided in each positioning block. A telescopic positioning element is provided on the side wall of the drying chamber, which can be inserted into the positioning hole. The positioning element includes a cylinder, with a telescopic element A inside the cylinder. A base plate is provided at the end of the telescopic element A, which abuts against one side of the positioning block. An insertion rod is provided on the base plate, which is inserted into the positioning hole. A stop block is provided at the top of the drying chamber, abutting against the side of the positioning block. Rollers are provided at the bottom of the columns. A boss is provided on the bottom side of the drying chamber to restrict the insertion position of the drying rack, and the rollers are located on both sides of the boss. Mounting holes for installing the positioning element are provided on the side wall of the drying chamber.

[0017] Furthermore, a driving structure A that cooperates with the supporting structure is provided between the two supports, and a driving structure B that cooperates with the driving structure A is provided on the inner back side of the drying chamber; and the driving structure A and the driving structure B are arranged opposite to each other; the driving structure A includes a "[" shaped plate connected between the two supports, and the inner side of the "[" shaped plate is connected to a push plate A whose side abuts against the end of the artificial board through at least two telescopic members B; the driving structure B includes a strip-shaped base plate installed on the inner back side of the drying chamber, and the side of the strip-shaped base plate is connected to a push plate B whose side abuts against the end of the artificial board through at least two telescopic members C.

[0018] Furthermore, the telescopic component C and the telescopic component B have the same structure, both including an inner sleeve and an outer sleeve that are nested together, and a spring connecting the inner sleeve and the outer sleeve; it also includes a control mechanism that controls the telescopic component C and the telescopic component B to operate synchronously and perform opposite actions.

[0019] Furthermore, the control mechanism includes piston cylinder A and piston cylinder B arranged opposite to each other, the telescopic member C communicates with piston cylinder A, and the telescopic member B communicates with piston cylinder B; pistons are provided in both piston cylinder A and piston cylinder B; it also includes a telescopic cylinder, the end of which is connected to a movable block located between piston cylinder A and piston cylinder B, piston rods are respectively connected to both sides of the movable block, and pistons are connected to the ends of the piston rods.

[0020] Furthermore, the control mechanism includes a second pump, with Y-type connectors respectively provided at the inlet and outlet ends of the second pump, and three-way valves A and B respectively provided on the two Y-type connectors; the telescopic component B is connected to the two Y-type connectors through pipe one and pipe two respectively; the telescopic component C is connected to the two Y-type connectors through pipe three and pipe four respectively.

[0021] The present invention has the following beneficial effects:

[0022] 1. This invention controls the internal circulation of drying hot air within the air supply box assembly and the drying chamber by setting up an air supply box assembly. Furthermore, the formaldehyde adsorbent installed in the exhaust structure absorbs and treats the formaldehyde gas volatilized from the artificial board during the drying process, thereby reducing the formaldehyde content in the artificial board after production. At the same time, the overall internal circulation of drying hot air is achieved, preventing formaldehyde gas from volatilizing from the artificial board and polluting the production equipment or the surrounding environment of the production area.

[0023] 2. Based on the setting of drive structure A and drive structure B, this invention enables the artificial board to move left and right on the support structure during the drying process by controlling the movement of drive structure A and drive structure B. This ensures that the degree of drying is the same at any position on the upper and lower surfaces of the artificial board, and avoids the artificial board near the air outlet having a better drying effect than the artificial board far away from the air outlet.

[0024] 3. By setting up positioning components, this invention facilitates the control of the drying rack moving into the drying chamber under the action of rollers. When the stop block abuts against the positioning block, the positioning components are extended to fix the position of the drying rack inside the drying chamber. This avoids situations where the drying rack moves or shifts in position during the process of driving the artificial board using drive structure A and drive structure B.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a schematic diagram of the dryer structure of the present invention;

[0028] Figure 2 is the front view of Figure 1;

[0029] Figure 3 is a top view of Figure 1;

[0030] Figure 4 is a cross-sectional view at point AA in Figure 2;

[0031] Figure 5 is a system diagram of the drying airflow of the present invention;

[0032] Figure 6 is a schematic diagram of the positioning component structure of the present invention;

[0033] Figure 7 is a schematic diagram of the blowing range of the air outlet of the present invention;

[0034] Figure 8 is a schematic diagram of the exhaust structure of the present invention;

[0035] Figure 9 is a schematic diagram of the exhaust structure of the present invention (II).

[0036] Figure 10 is a schematic diagram of the exhaust structure of the present invention.

[0037] Figure 11 is a schematic diagram of the exhaust structure of the present invention;

[0038] Figure 12 is a schematic diagram of the exhaust structure of the present invention;

[0039] Figure 13 is a schematic diagram of the reflux hole assembly structure of the present invention;

[0040] Figure 14 is a schematic diagram of the drying chamber structure of the present invention;

[0041] Figure 15 is a schematic diagram of the drying rack structure of the present invention;

[0042] Figure 16 is a side view of Figure 15;

[0043] Figure 17 is a schematic diagram of the control structure of the present invention;

[0044] Figure 18 is a schematic diagram of the control structure of the present invention. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0047] Please refer to Figures 1-4. This invention is an environmentally friendly wood-based panel dryer, including a drying chamber 2 and a drying rack 1 for placing wood-based panels 100. During drying, the drying rack 1 is placed inside the drying chamber 2. In order to achieve environmental protection and reduce the formaldehyde pollution from the wood-based panels 100 during the drying process, this invention installs an exhaust structure 20 on the side wall of the drying chamber 2, sets an air blowing structure 18 on the drying rack 1, and sets an air supply box assembly that connects the exhaust structure 20 and the air blowing structure 18. The air pump 44 in the air supply box assembly drives the drying hot air to achieve internal circulation between the air supply box assembly and the drying chamber 2, avoiding the drying hot air from escaping into the environment and causing pollution.

[0048] Based on this, as shown in Figure 5, the air supply box assembly includes an air supply box 41 and an air return box 42 connected by a heating pipe 40; the air blowing structure 18 and the air supply box 41 are connected by an air delivery pipe 43 on which an air pump 44 is installed, and the air return box 42 and the exhaust structure 20 are connected by an air return pipe 45.

[0049] As shown in Figure 8, the exhaust structure 20 includes an absorption treatment box 203 and a drying box 201 that are interconnected. The absorption treatment box 203 is filled with liquid or solid formaldehyde adsorbent 2035, and an air inlet 2033 is provided on one side of the absorption treatment box 203. The drying box 201 is filled with desiccant 2017 and is connected to the return air box 42. In the above-mentioned method, the formaldehyde adsorbent 2035 is used to absorb and treat the formaldehyde gas volatilized from the artificial board 100 during the drying process, which not only prevents formaldehyde from escaping into the environment and causing pollution, but also saves energy. The setting of filling the drying box 201 with desiccant 2017 facilitates the absorption and drying of moisture in the hot circulating gas during use.

[0050] It is understood that, in order to improve drying efficiency, the artificial board 100 is placed on the drying rack 1 in a layered and spaced manner, and the drying rack 1 is provided with air blowing structures 18 located above and below any artificial board 100; the air blowing structures 18 are used to blow air and dry the upper and lower surfaces of the artificial board 100 at the same time, thereby improving the drying efficiency.

[0051] In order to improve the treatment effect of dry hot air, the top of the absorption treatment box 203 in this invention is provided with an opening A and a cover plate A2032 is provided at the opening A. The opening A makes it convenient to fill the absorption treatment box 203 with formaldehyde adsorbent 2035.

[0052] As shown in Figure 8, in one specific embodiment, the formaldehyde adsorbent 2035 is in a liquid state. To facilitate the hot air after drying entering the absorption treatment box 203 through the air inlet 2033 and fully contacting the formaldehyde adsorbent 2035, thereby improving the absorption effect of the formaldehyde adsorbent 2035 on the formaldehyde in the hot air, the present invention provides a partition A2031 on one side of the cover plate A2032, and the bottom end of the partition A2031 extends below the liquid surface of the formaldehyde adsorbent 2035. Based on this design, after the gas enters the absorption treatment box 203, pressure will be formed, causing a liquid level difference on both sides of the partition A2031, until the liquid level on one side is lower than the bottom end of the partition A2031. At this time, the hot air after drying will bubble out from the liquid surface on the other side and be discharged from the exhaust port on the other side of the absorption treatment box 203. The discharged gas enters the drying box 201 through the rigid pipe 202 connecting the drying box 201 and the absorption treatment box 203.

[0053] As shown in Figure 12, after the hot air passes through the formaldehyde adsorbent 2035, it will carry some droplets or moisture. Therefore, it is necessary to recover these droplets or moisture. Based on this, a semiconductor cooling block 2021 is installed along the length of the rigid tube 202. Water-blocking protrusions 2022 are installed at both ends of the rigid tube 202. Under the action of the semiconductor cooling block 2021, the droplets or moisture carried by the hot air are liquefied and drip into the rigid tube 202. To facilitate recovery into the absorption and treatment tank 203, the outer bottom side of the rigid tube 202 is connected to a collection bag 2024 via a flexible hose A2023. The bottom of the collection bag 2024 is connected to a... The bottom of the absorption treatment tank 203; the bottom of the rigid tube 202 is provided with two connecting sleeves 2027, and the connecting sleeves 2027 are provided with locking bolts 2029. The collection bag 2024 is provided with a connecting post 2028 that is inserted into the connecting sleeves 2027. During recycling, the connecting post 2028 is removed from the connecting sleeves 2027, and the bottom of the collection bag 2024 is made higher than the top of the absorption treatment tank 203. The valve 2026 provided on the hose B2025 is opened. At this time, the liquid collected in the collection bag 2024 flows back into the absorption treatment tank 203. After the flow is completed, the valve 2026 is closed, and the connecting post 2028 is inserted into the connecting sleeve 2027 to return to its initial position.

[0054] Of course, in order to facilitate the connection between the absorption treatment box 203 and the drying box 201, the rigid tube 202 is set at the middle height of the absorption treatment box 203 and the drying box 201. Therefore, a cover 209 with a top opening needs to be set on the inner side wall of the absorption treatment box 203 located at the exhaust port. The cover 209 is used to prevent the liquid level in the absorption treatment box 203 from submerging the exhaust port during use.

[0055] Based on the design of the cover 209, during use, a small amount of liquid will accumulate on the inner bottom side of the cover 209, facilitating periodic treatment of the liquid accumulated on the inner bottom side of the cover 209. As shown in Figures 9-11, the present invention provides a reflux hole group at the bottom end of the cover 209, and a sealing structure is provided in conjunction with the reflux hole group. The sealing structure includes a sealing plate B207 and a guide rod 206 connected to the sealing plate B207 and driving the sealing plate B207 to move up and down. As shown in Figure 13, a groove 2091 is formed by recessing the outer bottom side or the inner and outer bottom sides of the cover 209. The reflux hole group includes a guide hole 2092 provided on the outer bottom side of the groove 2091, and a reflux hole 2093 is provided on the outer bottom side of the groove 2091 located around the guide hole 2092. The bottom end of the guide rod 206 is connected to a horizontal rod 205, and the other end of the horizontal rod 205 is connected to a vertical rod 204 that penetrates the perforated plate 2034 and has a handle 2041 at the top.

[0056] It is known that, in order to achieve the control of the reflux orifice 2093, three implementation methods are provided below.

[0057] Method 1: As shown in Figure 9, when the horizontal rod 205 abuts against the inner bottom side of the absorption and treatment box 203 under the action of gravity, the sealing plate B207 is located on the inner bottom side of the cover 209. At this time, when it is necessary to open the return hole 2093, the vertical rod 204 can be controlled to move upward.

[0058] Method 2: As shown in Figure 11, when the elastic telescopic component 208 is connected between the horizontal rod 205 and the inner bottom side of the absorption and treatment box 203, the sealing plate B207 is located below the cover 209, and the elastic telescopic component 208 is in its natural state. At this time, the sealing plate B207 abuts against the outer bottom side of the cover 209, and the vertical rod 204 can be controlled to move downward.

[0059] Method 3: As shown in Figure 10, when the overall density of the horizontal rod 205, vertical rod 204 and guide rod 206 is lower than the density of the liquid formaldehyde adsorbent 2035, the sealing plate B207 is located below the cover 209. When the liquid level in the absorption treatment box 203 is higher than the inner bottom side of the cover 209, the sealing plate B207 is pressed against the outer bottom side of the cover 209. When the liquid level in the absorption treatment box 203 drops, the sealing plate B207 detaches from the outer bottom side of the cover 209 under the action of gravity.

[0060] In the above, a perforated plate 2034 is connected between the partition A2031 and the inner wall of the absorption treatment box 203 with the air inlet 2033; a rigid pipe 202 is connected to the exhaust port; the top of the drying box 201 is open and a cover plate B2011 is provided at the opening, and a connector 2012 connected to the return air pipe 45 is provided at the cover plate B2011; a partition B2013 is provided inside the drying box 201, and two areas are formed between the partition B2013 and the inner wall of the drying box 201. A support ring 2014 is provided at the top of the area near the rigid pipe 202, and a sealing plate A2016 is provided on the support ring 2014.

[0061] As can be seen in a specific embodiment, as shown in Figures 15-16, the drying rack 1 includes two parallel supports, and a plurality of support structures and air blowing structures 18 for supporting the artificial board 100 are connected from top to bottom between the two supports; the support structure includes a plurality of connecting rods 13 with gaps, and a plurality of support rollers 14 are rotatably arranged with equal gaps on the outer side of the connecting rods 13; the air blowing structure 18 consists of a plurality of air blowing pipes arranged between the two supports, and a connecting rod 13 is arranged between any two adjacent air blowing pipes; the bottom and top of the air blowing pipes are provided with air blowing ports 181 with trapezoidal cross-sections along the length direction, and the length of the air blowing ports 181 is greater than the width of the artificial board 100, so that the air blowing ports 181 can be arranged to blow and dry the entire upper and lower surfaces of the artificial board 100.

[0062] Of course, based on the above, a drive structure A that cooperates with the support structure is also provided between the two supports, and a drive structure B that cooperates with the drive structure A is provided on the inner back side of the drying chamber 2; and the drive structure A and the drive structure B are arranged opposite to each other; the drive structure A includes a "[" shaped plate 15 connected between the two supports, and the inner side of the "[" shaped plate 15 is connected to a push plate A17 that abuts against the end of the artificial board 100 through at least two telescopic members B16; the drive structure B includes a strip base plate 24 installed on the inner back side of the drying chamber 2, and the strip base plate 24... A push plate B26, which rests against the end of the artificial board 100, is connected to the side via at least two telescopic members C25. Based on the setting of drive structure A and drive structure B, the artificial board 100 is driven to move left and right on the support structure during the drying process by controlling the movement of drive structure A and drive structure B. This ensures that the degree of drying is the same at any position on the upper and lower surfaces of the artificial board 100, and avoids the artificial board 100 near the air outlet 181 having a better drying effect than the artificial board 100 far away from the air outlet 181.

[0063] In one embodiment, as shown in Figure 7, the blowing range of the air outlet 181 is equal to the distance between two adjacent connecting rods 13. At this time, when the drive structure A and the drive structure B are in use, the deviation distance of the artificial board 100 is equal to 1 or 0.5 times the blowing range of the air outlet 181.

[0064] Meanwhile, to facilitate the control of the movement of drive structure A and drive structure B, the telescopic component C25 and telescopic component B16 in this invention have the same structure, both including an inner sleeve and an outer sleeve that are nested together, and a spring connecting the inner sleeve and the outer sleeve; it also includes a control mechanism 27 that controls the telescopic component C25 and telescopic component B16 to run synchronously and perform opposite actions.

[0065] As shown in Figure 17, one implementation form of the control mechanism 27 is as follows:

[0066] The control mechanism 27 includes piston cylinders A271 and B272 arranged opposite to each other. Telescopic component C25 is connected to piston cylinder A271, and telescopic component B16 is connected to piston cylinder B272. Pistons are provided in both piston cylinders A271 and B272. It also includes a telescopic cylinder 273. The end of the telescopic cylinder 273 is connected to a movable block 270 located between piston cylinders A271 and B272. Piston rods 274 are connected to both sides of the movable block 270, and the ends of the piston rods 274 are connected to pistons. In use, the telescopic cylinder 273 is controlled to extend and retract to control the telescopic components C25 and B16 to perform corresponding extension and retraction movements.

[0067] As shown in Figure 18, the control mechanism 27 is implemented in two ways:

[0068] The control mechanism 27 includes a second pump 275, with Y-type connectors at the inlet and outlet ends of the second pump 275, and three-way valves A2751 and B2752 respectively installed on the two Y-type connectors; the telescopic component B16 is connected to the two Y-type connectors through pipe 1 2761 and pipe 2 2772 respectively; the telescopic component C25 is connected to the two Y-type connectors through pipe 3 2762 and pipe 4 2771 respectively; the pump 275 drives air to flow between the telescopic component C25 and the telescopic component B16, thereby controlling the telescopic components C25 and B16 to perform corresponding telescopic movements.

[0069] As can be seen in a specific embodiment, as shown in Figures 15-16, the support includes two columns 101, with a crossbar 102 connecting the two columns 101 and cooperating with the supporting structure. The ends of the connecting rod 13 and the air blowing pipe are fixed to one side of the crossbar 102. Positioning blocks 12 are provided at both ends of the columns 101, and positioning holes 121 are provided in the positioning blocks 12. As shown in Figure 14, a retractable positioning element 3 that can be inserted into the positioning hole 121 is provided on the side wall of the drying chamber 2. As shown in Figure 6, the positioning element 3 includes a cylinder 31, with a telescopic element A32 inside the cylinder 31. The end of the telescopic element A32 is provided with a base plate 33 that abuts against one side of the positioning block 12, and an insertion rod 34 that is inserted into the positioning hole 121 is provided on the base plate 33. The drying chamber 2... The top of the column 101 is provided with a stop block 28 that abuts against the side of the positioning block 12; the bottom of the column 101 is provided with a roller 11; the bottom side of the drying chamber 2 is provided with a boss 22 that restricts the position of the drying rack 1 when pushed in, and the roller 11 is located on both sides of the boss 22; the side wall of the drying chamber 2 is provided with a mounting hole 21 for installing the positioning component 3; in the above, the positioning component 3 is provided to facilitate the control of the drying rack 1 after it moves into the drying chamber 2 under the action of the roller 11. When the stop block 28 abuts against the positioning block 12, the positioning component 3 is used to extend and fix the position of the drying rack 1 in the drying chamber 2, so as to avoid the drying rack 1 from moving or shifting in position during the process of driving the artificial board 100 by the drive structure A and drive structure B.

[0070] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An environmentally friendly wood-based panel drying machine, characterized in that: The system includes a drying chamber (2) and a drying rack (1) for placing engineered wood panels (100), wherein the engineered wood panels (100) are arranged in layers with gaps; the opening end of the drying chamber (2) is sealed with a sealing door; during drying, the drying rack (1) is placed inside the drying chamber (2); an exhaust structure (20) is installed on the side wall of the drying chamber (2); an air blowing structure (18) is provided on the drying rack (1) above and below any of the engineered wood panels (100); the air blowing structure (18) is connected to an air supply box assembly, which includes an air supply box (41) and an air return box (42) connected by a heating pipe (40); the air blowing structure (18) and the air supply box (41) are connected by a... The return air box (42) and the exhaust structure (20) are connected by a return air pipe (45) through an air supply pipe (43) equipped with an air pump (44); wherein, the exhaust structure (20) includes an absorption treatment box (203) and a drying box (201) that are connected to each other. The absorption treatment box (203) is filled with liquid formaldehyde adsorbent (2035). An air inlet (2033) is provided on one side of the absorption treatment box (203). The drying box (201) is filled with desiccant (2017) and is connected to the return air box (42); an opening A is provided on the top of the absorption treatment box (203) and a cover plate A is provided at the opening A. (2032), a partition A (2031) is provided on one side of the cover plate A (2032), and an exhaust port is provided on the other side of the absorption treatment box (203). A cover (209) with a top opening is provided on the inner wall of the absorption treatment box (203) located at the exhaust port. A reflux hole group is provided at the bottom end of the cover (209), and a sealing structure is provided in cooperation with the reflux hole group. The sealing structure includes a sealing plate B (207) and a guide rod (206) connected to the sealing plate B (207) and driving the sealing plate B (207) to move up and down. A groove (2091) is formed in the outer bottom side or inner and outer bottom side of the cover (209). The reflux hole group includes a set of A guide hole (2092) is provided on the outer bottom side of the groove (2091), and a return hole (2093) is provided on the outer bottom side of the groove (2091) located around the guide hole (2092); the bottom end of the guide rod (206) is connected to a horizontal rod (205), and the other end of the horizontal rod (205) is connected to a vertical rod (204) that passes through the perforated plate (2034) and has a handle (2041) on the top; the return hole (2093) is opened by one of the following three methods: when the horizontal rod (205) abuts against the inner bottom side of the absorption treatment box (203), the sealing plate B (207) is located on the inner bottom side of the cover (209), and the vertical rod (204) is controlled to move upward;When the horizontal rod (205) and the inner bottom side of the absorption treatment box (203) are connected by an elastic telescopic member (208), the sealing plate B (207) is located below the cover (209), and the elastic telescopic member (208) is in its natural state. At this time, the sealing plate B (207) abuts against the outer bottom side of the cover (209), controlling the vertical rod (204) to move downward. When the overall density of the horizontal rod (205), the vertical rod (204) and the guide rod (206) is lower than the density of the liquid formaldehyde adsorbent (2035), the sealing plate B (207) is located below the cover (209), and when the liquid level in the absorption treatment box (203) is higher than the inner bottom side of the cover (209), the sealing plate B (207) abuts against the outer bottom side of the cover (209). When the liquid level in the absorption treatment box (203) drops, under the action of gravity, the sealing plate B (207) detaches from the outer bottom side of the cover (209). ; 2. The environmentally friendly wood-based panel dryer according to claim 1, characterized in that, A perforated plate (2034) is connected between the partition A (2031) and the inner wall of the absorption treatment box (203) with the air inlet (2033); a rigid pipe (202) is connected to the exhaust port; the top of the drying box (201) is open and a cover plate B (2011) is provided at the opening, and a connector (2012) connected to the return air pipe (45) is provided at the cover plate B (2011); a partition B (2013) is provided inside the drying box (201), and two areas are formed between the partition B (2013) and the inner wall of the drying box (201). A support ring (2014) is provided at the top of the area near the rigid pipe (202), and a sealing plate A (2016) is provided on the support ring (2014).

3. The environmentally friendly wood-based panel dryer according to claim 2, characterized in that, A semiconductor cooling block (2021) is provided inside the rigid tube (202) along its length; water-blocking protrusions (2022) are provided at both ends of the rigid tube (202); the outer bottom side of the rigid tube (202) is connected to a collection bag (2024) through a flexible hose A (2023), and the bottom of the collection bag (2024) is connected to the bottom of the absorption and treatment box (203) through a flexible hose B (2025), and a valve (2026) or butterfly clip is provided on the flexible hose B (2025); at least one connecting sleeve (2027) is provided at the bottom of the rigid tube (202), a locking bolt (2029) is provided on the connecting sleeve (2027), and a connecting post (2028) for inserting the connecting sleeve (2027) is provided on the collection bag (2024).

4. The environmentally friendly wood-based panel dryer according to claim 3, characterized in that, The drying rack (1) includes two parallel supports, and a plurality of support structures for supporting the artificial board (100) and the air blowing structure (18) are connected from top to bottom between the two supports; the support structure includes a plurality of connecting rods (13) spaced apart, and a plurality of support rollers (14) are rotatably arranged with equal gaps on the outer side of the connecting rods (13); the air blowing structure (18) consists of a plurality of air blowing pipes arranged between the two supports, and a connecting rod (13) is provided between any two adjacent air blowing pipes; the bottom and top of the air blowing pipes are provided with air blowing ports (181) with trapezoidal cross sections along the length direction, and the length of the air blowing port (181) is greater than the width of the artificial board (100); the blowing range of the air blowing port (181) is equal to the distance between two adjacent connecting rods (13).

5. The environmentally friendly wood-based panel dryer according to claim 4, characterized in that, The support includes two columns (101), and a crossbar (102) connecting the two columns (101) and cooperating with the supporting structure. The ends of the connecting rod (13) and the air blowing pipe are fixed to one side of the crossbar (102). Positioning blocks (12) are provided at both ends of each column (101), and positioning holes (121) are provided in each positioning block (12). A retractable positioning element (3) is provided on the side wall of the drying chamber (2) and can be inserted into the positioning hole (121). The positioning element (3) includes a cylinder (31), and a telescopic element A (32) is provided inside the cylinder (31). The end of the 32) is provided with a base plate (33) that abuts against one side of the positioning block (12), and the base plate (33) is provided with a rod (34) that is inserted into the positioning hole (121); the top of the drying chamber (2) is provided with a stop block (28) that abuts against the side of the end of the positioning block (12); the bottom end of the column (101) is provided with a roller (11); the bottom side of the drying chamber (2) is provided with a boss (22) that restricts the position of the drying rack (1) to be pushed in, and the roller (11) is located on both sides of the boss (22); the side wall of the drying chamber (2) is provided with a mounting hole (21) for installing the positioning component (3).

6. The environmentally friendly wood-based panel dryer according to claim 4, characterized in that, A drive structure A that cooperates with the support structure is also provided between the two supports. A drive structure B that cooperates with the drive structure A is provided on the inner back side of the drying chamber (2). The drive structure A and the drive structure B are arranged opposite to each other. The drive structure A includes a "[" shaped plate (15) connected between the two supports. The inner side of the "[" shaped plate (15) is connected to a push plate A (17) that abuts against the end of the artificial board (100) through at least two telescopic members B (16). The drive structure B includes a strip base plate (24) installed on the inner back side of the drying chamber (2). The side of the strip base plate (24) is connected to a push plate B (26) that abuts against the end of the artificial board (100) through at least two telescopic members C (25).

7. The environmentally friendly wood-based panel dryer according to claim 6, characterized in that, The telescopic component C (25) and telescopic component B (16) have the same structure, both including an inner sleeve and an outer sleeve that are nested together, and a spring connecting the inner sleeve and the outer sleeve; it also includes a control mechanism (27) that controls the telescopic component C (25) and telescopic component B (16) to operate synchronously and perform opposite actions.

8. The environmentally friendly wood-based panel dryer according to claim 7, characterized in that, The control mechanism (27) includes piston cylinders A (271) and B (272) arranged opposite to each other. The telescopic component C (25) is connected to piston cylinder A (271), and the telescopic component B (16) is connected to piston cylinder B (272). Pistons are provided in both piston cylinders A (271) and B (272). It also includes a telescopic cylinder (273). The end of the telescopic cylinder (273) is connected to a movable block (270) located between piston cylinders A (271) and B (272). Piston rods (274) are connected to both sides of the movable block (270), and the end of the piston rods (274) is connected to a piston.

9. The environmentally friendly wood-based panel dryer according to claim 7, characterized in that, The control mechanism (27) includes a second pump (275), with Y-type connectors respectively provided at the inlet and outlet ends of the second pump (275), and three-way valves A (2751) and B (2752) respectively provided on the two Y-type connectors; the telescopic component B (16) is connected to the two Y-type connectors respectively through pipe one (2761) and pipe two (2772); the telescopic component C (25) is connected to the two Y-type connectors respectively through pipe three (2762) and pipe four (2771).

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