Apparatus and method for drying rapidly growing wood with superheated steam

Abstract

The application discloses a device for drying fast-growing wood by superheated steam, which comprises a steam generator, a drying bin, a conveying mechanism and a controller. A working space is formed in the drying bin. The drying bin is provided with an inlet and an outlet. A bin door is arranged at the inlet and the outlet. The inlet and the outlet are communicated with the working space, and the working space is used for accommodating fast-growing wood. The steam generator is arranged outside the drying bin. The steam generator and the working space are communicated through a connecting pipeline. The steam generator delivers superheated steam into the working space through the connecting pipeline. The controller is electrically connected with the steam generator and the conveying mechanism respectively. The controller is used for controlling the conveying mechanism to drive the fast-growing wood outside the drying bin into the working space, so that the superheated steam delivered by the steam generator can dry the fast-growing wood. In the technical scheme, the conveying mechanism is used to assist the staff to quickly complete the stacking of the fast-growing wood and the taking of the dried fast-growing wood, thereby effectively improving the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of fast-growing timber drying technology, and in particular to a device and method for drying fast-growing timber with superheated steam. Background Technology

[0002] Wood contains a certain amount of moisture. The amount of moisture in wood varies depending on the tree species, age, and harvesting season. To ensure the quality of wood and wood products and extend their service life, appropriate measures must be taken to reduce the moisture content (moisture content) of the wood to a certain level. To reduce the moisture content of wood, the temperature of the wood must be increased, causing the moisture in the wood to evaporate and move outward. In air with a certain flow rate, the moisture quickly leaves the wood, achieving the purpose of drying. To ensure the quality of the dried wood, the humidity of the drying medium (such as the commonly used humid air) must also be controlled to achieve a rapid and high-quality drying effect. This process is called wood drying. Currently, superheated steam is generally supplied to the drying chamber through a steam generator to quickly dehydrate fast-growing wood. Fast-growing wood is usually directly transported to the drying chamber by workers and stacked. The transportation of fast-growing wood relies entirely on manual labor, which seriously affects production efficiency. Summary of the Invention

[0003] The main objective of this invention is to provide an equipment and method for drying fast-growing timber with superheated steam, aiming to solve the problem that the transportation of fast-growing timber relies entirely on manual labor, which seriously affects production efficiency.

[0004] To achieve the above objectives, the technical solution proposed by this invention is as follows:

[0005] A device for superheated steam drying of fast-growing timber includes a steam generator, a drying chamber, a conveying mechanism, and a controller. The drying chamber forms a working space with an inlet and outlet, each with a door. The inlet and outlet connect to the working space, which is used to accommodate fast-growing timber. The steam generator is located outside the drying chamber and is connected to the working space via a connecting pipe. The steam generator supplies superheated steam to the working space through the connecting pipe. The controller is electrically connected to both the steam generator and the conveying mechanism. The controller controls the conveying mechanism to drive the fast-growing timber outside the drying chamber into the working space, so that the steam generator supplies superheated steam to dry the fast-growing timber.

[0006] Preferably, two rectangular through holes are provided on the top side of the drying chamber, the rectangular through holes connecting to the working space, the two rectangular through holes being arranged in parallel and spaced apart, and extending along the chamber door towards the working space away from the chamber door; the two rectangular through holes respectively connect the working space and the outside of the drying chamber; the transport mechanism is located on the top side of the drying chamber, the transport mechanism being disposed between the two rectangular through holes, the transport mechanism being used to move fast-growing timber into the working space through the two rectangular through holes; two sealing mechanisms are also provided on the top side of the drying chamber, the controller being electrically connected to the two sealing mechanisms, the controller being used to control the two sealing mechanisms respectively after the transport mechanism moves the fast-growing timber, so that one of the sealing mechanisms seals one of the rectangular through holes, and the other sealing mechanism seals the other rectangular through hole.

[0007] Preferably, the transport mechanism includes a track, an electrically controlled slide, a mounting base, a crossbeam, and two lifters. The track is disposed between the two rectangular through holes and is parallel to the extension direction of the two rectangular through holes. The electrically controlled slide and the track are slidably connected. The mounting base is disposed on the side of the electrically controlled slide away from the drying chamber. The crossbeam is disposed on the side of the mounting base away from the electrically controlled slide and extends along one of the rectangular through holes to the other rectangular through hole, with the crossbeam perpendicular to the extension direction of the two rectangular through holes. One lifter is disposed at one end of the crossbeam, and the other lifter is disposed at the other end of the crossbeam. A controller is electrically connected to the electrically controlled slide and the two lifters. The controller is used to control the two lifters to extend into the working space through adjacent rectangular through holes to detachably connect fast-growing timber. The electrically controlled slide drives the two lifters to move along the extension direction of the two rectangular through holes via the crossbeam, so that the two lifters drive the fast-growing timber to move and stack.

[0008] Preferably, the lifting device includes a connecting chain, a buckle, a fixed pulley, a connecting seat, a rotating shaft, and a first servo motor. The connecting seat is disposed on the side of the crossbeam facing the drying chamber. The fixed pulley is sleeved on the rotating shaft and is rotatably connected to the connecting seat via the rotating shaft. The first servo motor drives the end connected to the rotating shaft and is used to drive the fixed pulley to rotate via the rotating shaft. One end of the connecting chain is connected to the fixed pulley, and the other end of the connecting chain is provided with the buckle. The buckle is used to detachably connect the connecting chain after winding fast-growing timber. The controller is electrically connected to the first servo motor and is used to control the first servo motor to drive the fixed pulley to rotate, so that the end of the connecting chain with the buckle is detachably connected to the fast-growing timber through the adjacent rectangular through hole.

[0009] Preferably, one of the sealing mechanisms is located on the side of one of the rectangular through holes opposite to the transport mechanism, and the other sealing mechanism is located on the side of the other rectangular through hole opposite to the transport mechanism; the sealing mechanism includes a sealing plate, a connecting plate, a first telescopic member, and a hinge seat; the first telescopic member is disposed on the side of the rectangular through hole opposite to the transport mechanism, the output end of the first telescopic member faces the transport mechanism, and the telescopic path of the first telescopic member is perpendicular to the extension path of the rectangular through hole; the hinge seat is located between the first telescopic member and the rectangular through hole, and the sealing plate and the hinge seat are connected. The rectangular through hole is hinged via a first hinge axis, the axial direction of which is parallel to the extension direction of the rectangular through hole. A connecting plate is disposed between the sealing plate and the first telescopic device. One end of the connecting plate is hinged to the output end of the first telescopic device via a second hinge axis, and the other end of the connecting plate is hinged to the sealing plate via a third hinge axis. The first hinge axis is parallel to both the second and third hinge axes. A controller is electrically connected to the first telescopic device and is used to control the first telescopic device to drive the sealing plate through the connecting plate, so that the sealing plate seals the rectangular through hole.

[0010] Preferably, a sealing block is provided on the side of the sealing plate away from the connecting plate, and a sealing layer is provided on the outer surface of the sealing block. When the sealing plate is used to seal the rectangular through hole, the sealing block is inserted into the rectangular through hole so that the sealing layer abuts against the inner wall surface of the rectangular through hole.

[0011] Preferably, a locking mechanism is also provided on the top side of the drying chamber. The controller is electrically connected to the locking mechanism. The controller is used to control the locking mechanism after the two sealing mechanisms seal the two rectangular through holes, so that the two sealing mechanisms are fixed in the adjacent rectangular through holes.

[0012] Preferably, the locking mechanism includes a pressure plate and a second telescopic device. The second telescopic device is disposed between the two rectangular through holes, and the pressure plate is disposed at the same end of the two rectangular through holes. The output end of the second telescopic device is connected to the pressure plate, and the telescopic direction of the second telescopic device is parallel to the extension direction of the rectangular through holes. The controller is electrically connected to the second telescopic device, and the controller is used to control the second telescopic device to drive the pressure plate to move to a position above the two sealing plates after the two sealing plates seal the two rectangular through holes, thereby fixing the relative position of the sealing plates.

[0013] A method for drying fast-growing timber with superheated steam, the method employing any of the superheated steam drying equipment described above, the method comprising:

[0014] The fast-growing timber to be dried is transported into the work space and stacked using the transport mechanism.

[0015] The steam generator supplies superheated steam to the working space, first heating the working space to 100°C at a heating rate of 15°C / h to 35°C / h, and then holding the working space at 100°C for 50 to 90 minutes. Next, the steam is heated to 160°C at a heating rate of 15°C / h to 25°C / h, and then held at 160°C for 120 to 180 minutes.

[0016] After the second heat preservation is completed, the temperature is reduced to 100℃ at a cooling rate of 15℃ / h to 20℃ / h;

[0017] After cooling to 100℃, allow the wood to cool naturally, and then remove the dried fast-growing timber.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] With the assistance of transportation agencies, workers can quickly stack fast-growing timber and retrieve dried fast-growing timber, effectively improving production efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of an embodiment of the equipment for drying fast-growing timber with superheated steam according to the present invention;

[0022] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle;

[0023] Figure 3 for Figure 1 A magnified structural diagram of point B in the middle;

[0024] Figure 4 A top-down structural diagram of the drying chamber:

[0025] Figure 5 for Figure 4 A magnified structural diagram of point C.

[0026] Explanation of icon numbers:

[0027] 1-Drying chamber; 11-Inlet / outlet; 14-Door; 12-Door; 13-Rectangular through hole;

[0028] 2-Transportation mechanism; 21-Rail; 22-Electrically controlled slide; 23-Mounting base; 24-Crossbeam;

[0029] 3-Sealing mechanism; 31-Sealing plate; 32-Connecting plate; 33-First expansion joint; 34-Hinge seat; 35-Sealing block;

[0030] 4-Lifting device; 41-Connecting chain; 42-Snap fastener; 43-Fixed pulley; 44-Connecting seat; 45-First servo motor;

[0031] 5-Observation mechanism; 51-Second servo motor; 52-Fixed base; 53-Mounting bracket; 54-First camera; 55-Second camera;

[0032] 6-Locking mechanism; 61-Pressure plate; 62-Second telescopic device;

[0033] 7-Steam generator; 71-Connecting pipeline; 72-Main pipe; 73-Steam pipe;

[0034] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0037] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0040] This invention proposes a device for drying fast-growing timber with superheated steam.

[0041] like Figures 1 to 5 The device shown includes a steam generator 7, a drying chamber 1, a conveying mechanism 2, and a controller. The drying chamber 1 forms a working space (not shown in the figure). The drying chamber 1 has an inlet and outlet 11, and a door 12 is provided at the inlet and outlet 11. The inlet and outlet 11 connect to the working space, which is used to accommodate fast-growing timber. The steam generator 7 is located outside the drying chamber 1 and is connected to the working space through a connecting pipe 71. The steam generator 7 delivers superheated steam to the working space through the connecting pipe 71. The controller is electrically connected to the steam generator 7 and the conveying mechanism 2 respectively. The controller is used to control the conveying mechanism 2 to drive the fast-growing timber outside the drying chamber 1 into the working space, so that the steam generator 7 delivers superheated steam to dry the fast-growing timber.

[0042] With the assistance of transport mechanism 2, workers can quickly stack fast-growing timber and retrieve dried fast-growing timber, effectively improving production efficiency.

[0043] Two rectangular through holes 13 are provided on the top side of the drying chamber 1. The rectangular through holes 13 connect to the working space. The two rectangular through holes 13 are arranged in parallel and spaced apart. The two rectangular through holes 13 extend along the door 12 towards the working space away from the door 12. The two rectangular through holes 13 connect the working space and the outside of the drying chamber 1 respectively. The transport mechanism 2 is located on the top side of the drying chamber 1. The transport mechanism 2 is set between the two rectangular through holes 13. The transport mechanism 2 is used to move fast-growing timber into the working space through the two rectangular through holes 13. Two sealing mechanisms 3 are also provided on the top side of the drying chamber 1. The controller is electrically connected to the two sealing mechanisms 3. The controller is used to control the two sealing mechanisms 3 respectively after the transport mechanism 2 moves the fast-growing timber, so that one sealing mechanism 3 seals one of the rectangular through holes 13 and the other sealing mechanism 3 seals the other rectangular through hole 13. When superheated steam is dried in the work space, the work space is kept at a high temperature. The transport mechanism 2 carries out the transport operation through two rectangular through holes 13, which can prevent the superheated steam from affecting the transport mechanism 2. Then, the sealing mechanism 3 seals the two rectangular through holes 13 after the transport is completed, which can prevent the superheated steam from leaking through the rectangular through holes 13.

[0044] Specifically, several temperature detectors (not shown in the figure) are installed in the working space. Each temperature detector is used to detect temperature data at various locations within the working space. The connecting pipeline 71 includes a main pipe 72 and three steam pipes 73. The main pipe 72 is located outside the drying chamber 1, and one end of the main pipe 72 is connected to the steam generator 7. The three steam pipes 73 are arranged in parallel at intervals. The ends of the three steam pipes 73 closest to the steam generator 7 pass through the drying chamber 1 and are all connected to the end of the main pipe 72 furthest from the steam generator 7. An electrically controlled valve (not shown in the figure) is installed at the connection between the three steam pipes 73 and the main pipe 72. The controller is electrically connected to each temperature detector and the three electrically controlled valves respectively. The controller is used to receive each temperature data and determine the temperature map within the working space based on the temperature data. The controller is also used to determine the temperature difference between different areas within the working space based on the temperature map and control each electrically controlled valve based on the temperature difference to ensure that the temperature difference between different areas is less than a preset value. This ensures uniform temperature at various locations within the working space, effectively improving drying efficiency and guaranteeing the drying effect.

[0045] The transport mechanism 2 includes a track 21, an electrically controlled slide 22, a mounting base 23, a crossbeam 24, and two lifters 4. The track 21 is located between two rectangular through holes 13, and the track 21 is parallel to the extending direction of the two rectangular through holes 13. The electrically controlled slide 22 and the track 21 are slidably connected. The mounting base 23 is located on the side of the electrically controlled slide 22 away from the drying chamber 1. The crossbeam 24 is located on the side of the mounting base 23 away from the electrically controlled slide 22. The crossbeam 24 extends along one of the rectangular through holes 13 towards the other rectangular through hole 13. The lifting mechanism 4 is perpendicular to the extending direction of the two rectangular through holes 13; one lifting device 4 is located at one end of the crossbeam 24, and the other lifting device 4 is located at the other end of the crossbeam 24; the controller is electrically connected to the electric control slide 22 and the two lifting devices 4 respectively. The controller is used to control the two lifting devices 4 to extend into the working space through the adjacent rectangular through holes 13 to detachably connect fast-growing timber. The electric control slide 22 drives the two lifting devices 4 to move along the extending direction of the two rectangular through holes 13 through the crossbeam 24, so that the two lifting devices 4 drive the fast-growing timber to move and stack. The workers move the fast-growing timber with the assistance of the transport mechanism 2, which effectively improves the stacking efficiency.

[0046] Specifically, an observation mechanism 5 is installed on one side of the door 12 of the drying chamber 1. The observation mechanism 5 is used to acquire a first image of the fast-growing timber to be entered into the work space. The controller is electrically connected to the observation mechanism 5. The controller receives the first image, determines the size data of the fast-growing timber to be dried based on the first image, and generates a stacking structure based on the size data. The stacking structure is then sent to an external device (i.e., a mobile phone). By generating the stacking structure and sending it to the worker's mobile phone, the system quickly assists the worker in establishing the stacking structure and completing the stacking, effectively improving efficiency.

[0047] Specifically, the observation unit 5 is also used to acquire a second image of fast-growing timber located in the work space; the controller is used to receive the second image and determine the placement position of the fast-growing timber based on the second image, and then judge whether the placement is accurate based on the placement position and the stacking mechanism. When the placement is inaccurate, the controller sends a reminder message to the external equipment.

[0048] Specifically, the observation mechanism 5 includes a second servo motor 51, a fixed base 52, a mounting bracket 53, a first camera 54, and a second camera 55. The fixed base 52 is located on the side of the drying chamber 1 where the door 12 is located, and the fixed base 52 is positioned above the door 12. The second servo motor 51 is located on the fixed base 52, with its output end facing away from the drying chamber 1 and connected to the mounting bracket 53. The first camera 54 is located on the side of the mounting bracket 53 facing away from the drying chamber 1 and is used to acquire a first image. The second camera 55 is located on the side of the mounting bracket 53 facing the drying chamber 1 and is used to acquire a second image. The controller is electrically connected to the second servo motor 51, the first camera 54, and the second camera 55. The controller is used to control the second servo motor 51 to drive the mounting bracket 53 to rotate so that the second camera 55 is positioned facing the work space through the door 12.

[0049] The lifting device 4 includes a connecting chain 41, a buckle 42, a fixed pulley 43, a connecting seat 44, a rotating shaft (not shown in the figure), and a first servo motor 45. The connecting seat 44 is located on the side of the crossbeam 24 facing the drying chamber 1. The fixed pulley 43 is sleeved on the rotating shaft and is rotatably connected to the connecting seat 44 via the rotating shaft. The first servo motor 45 drives the end of the rotating shaft and is used to drive the fixed pulley 43 to rotate via the rotating shaft. One end of the connecting chain 41 is connected to the fixed pulley 43, and the other end of the connecting chain 41 is provided with a buckle 42. The buckle 42 is used to detachably connect the connecting chain 41 after winding fast-growing timber. The controller is electrically connected to the first servo motor 45 and is used to control the first servo motor 45 to drive the fixed pulley 43 to rotate so that the end of the connecting chain 41 with the buckle 42 can be detachably connected to the fast-growing timber through the adjacent rectangular through hole 13. During transportation operations, the first servo motor 45 lowers the connecting chain 41, and the worker wraps the end with the buckle 42 around the end of the fast-growing timber once, and then hangs the buckle 42 on the connecting chain 41; when there is no transportation operation, the first servo motor 45 winds the connecting chain 41 around the fixed pulley 43.

[0050] One sealing mechanism 3 is located on the side of one rectangular through hole 13 facing away from the transport mechanism 2, and the other sealing mechanism 3 is located on the side of another rectangular through hole 13 facing away from the transport mechanism 2. The sealing mechanism 3 includes a sealing plate 31, a connecting plate 32, a first telescopic member 33, and a hinge seat 34. The first telescopic member 33 is located on the side of the rectangular through hole 13 facing away from the transport mechanism 2, with its output end facing the transport mechanism 2. The telescopic path of the first telescopic member 33 is perpendicular to the extension path of the rectangular through hole 13. The hinge seat 34 is located between the first telescopic member 33 and the rectangular through hole 13. The sealing plate 31 and the hinge seat 34 are connected. The seat 34 is hinged via a first hinge shaft, the axis of which is parallel to the extension direction of the rectangular through hole 13. A connecting plate 32 is disposed between the sealing plate 31 and the first telescopic device 33. One end of the connecting plate 32 is hinged to the output end of the first telescopic device 33 via a second hinge shaft, and the other end of the connecting plate 32 is hinged to the sealing plate 31 via a third hinge shaft. The first hinge shaft is parallel to both the second and third hinge shafts. A controller is electrically connected to the first telescopic device 33 and controls the first telescopic device 33 to drive the sealing plate 31 via the connecting plate 32, thereby sealing the rectangular through hole 13. The sealing plate 31, driven by the first telescopic device 33, seals the rectangular through hole 13 and ensures the normal operation of the transport mechanism 2.

[0051] A sealing block 35 is provided on the side of the sealing plate 31 away from the connecting plate 32. A sealing layer (not shown in the figure) is provided on the outer surface of the sealing block 35. When the sealing plate 31 is used to seal the rectangular through hole 13, the sealing block 35 is inserted into the rectangular through hole 13 so that the sealing layer abuts against the inner wall surface of the rectangular through hole 13. The sealing block 35 and the sealing layer can further improve the sealing effect.

[0052] A locking mechanism 6 is also provided on the top side of the drying chamber 1. The controller is electrically connected to the locking mechanism 6. The controller is used to control the locking mechanism 6 after the two sealing mechanisms 3 have sealed the two rectangular through holes 13, so that the two sealing mechanisms 3 are fixed in the adjacent rectangular through holes 13. The locking mechanism 6 can effectively enhance the sealing effect.

[0053] The locking mechanism 6 includes a pressure plate 61 and a second telescopic device 62. The second telescopic device 62 is disposed between two rectangular through holes 13, and the pressure plate 61 is disposed at the same end of the two rectangular through holes 13. The output end of the second telescopic device 62 is connected to the pressure plate 61. The telescopic direction of the second telescopic device 62 is parallel to the extension direction of the rectangular through holes 13. The controller is electrically connected to the second telescopic device 62. After the two sealing plates 31 seal the two rectangular through holes 13, the controller controls the second telescopic device 62 to drive the pressure plate 61 to move to a position above the two sealing plates 31, thereby fixing the relative position of the sealing plates 31.

[0054] A method for drying fast-growing timber with superheated steam, the method using the aforementioned equipment for drying fast-growing timber with superheated steam, the method comprising:

[0055] The fast-growing timber to be dried is transported into the work area and stacked using transport mechanism 2.

[0056] Steam generator 7 supplies superheated steam to the working space. First, it heats the working space to 100°C at a rate of 15°C / h to 35°C / h. After the working space reaches 100°C, it is held for the first time for 50 to 90 minutes. Then, it heats the working space to 160°C at a rate of 15°C / h to 25°C / h. After the working space reaches 160°C, it is held for the second time for 120 to 180 minutes.

[0057] After the second heat preservation is completed, the temperature is reduced to 100℃ at a cooling rate of 15℃ / h to 20℃ / h.

[0058] After cooling to 100℃, allow the wood to cool naturally, and then remove the dried fast-growing timber.

[0059] The transport mechanism 2 assists in stacking and ensures the gaps between each fast-growing timber, improving the drying effect on each piece of fast-growing timber; in conjunction with the assistance of each electronically controlled valve, it balances the temperature in each area of ​​the work space, maintaining consistent and rapid drying, effectively improving the drying effect and reducing drying efficiency.

[0060] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A device for drying fast-growing timber with superheated steam, characterized in that, The system includes a steam generator, a drying chamber, a transport mechanism, and a controller. The drying chamber forms a working space with inlets and outlets, each with a door. The inlets and outlets connect to the working space, which is used to accommodate fast-growing timber. The steam generator is located outside the drying chamber and is connected to the working space via a connecting pipe. The steam generator supplies superheated steam to the working space through the connecting pipe. The controller is electrically connected to both the steam generator and the transport mechanism. The controller controls the transport mechanism to drive the fast-growing timber from outside the drying chamber into the working space, so that the steam generator can supply superheated steam to dry the fast-growing timber. Two rectangular through holes are provided on the top side of the drying chamber, the rectangular through holes connecting to the working space, the two rectangular through holes are arranged in parallel and spaced apart, and the two rectangular through holes extend along the chamber door to the side of the working space away from the chamber door; the two rectangular through holes respectively connect the working space and the outside of the drying chamber; The transport mechanism includes a track, an electrically controlled slide, a mounting base, a crossbeam, and two lifters. The track is positioned between two rectangular through holes and is parallel to the extension direction of the two rectangular through holes. The electrically controlled slide is slidably connected to the track. The mounting base is located on the side of the electrically controlled slide away from the drying chamber. The crossbeam is located on the side of the mounting base away from the electrically controlled slide and extends along one of the rectangular through holes towards the other, perpendicular to the extension direction of the two rectangular through holes. One lifter is located at one end of the crossbeam, and the other lifter is located at the other end. A controller is electrically connected to the electrically controlled slide and the two lifters. The controller controls the two lifters to extend into the working space through adjacent rectangular through holes to detachably connect fast-growing timber. The electrically controlled slide drives the two lifters to move along the extension direction of the two rectangular through holes via the crossbeam, so that the two lifters drive the fast-growing timber to move and stack. An observation mechanism is installed on one side of the drying chamber door to acquire a first image of the fast-growing timber to be entered into the work space. The controller is electrically connected to the observation mechanism to receive the first image, determine the size data of the fast-growing timber to be dried based on the first image, generate a stacking structure based on the size data, and send the stacking structure to external equipment. The observation mechanism is also used to acquire a second image of fast-growing timber located in the work area; the controller is used to receive the second image and determine the placement position of the fast-growing timber based on the second image, and then judge whether the placement is accurate based on the placement position and stacking structure. When the placement is inaccurate, the controller sends a reminder message to the external equipment.

2. The equipment for superheated steam drying of fast-growing timber according to claim 1, characterized in that, The transport mechanism is located on the top side of the drying chamber and is disposed between the two rectangular through holes. The transport mechanism is used to move fast-growing timber into the working space through the two rectangular through holes. Two sealing mechanisms are also disposed on the top side of the drying chamber. The controller is electrically connected to the two sealing mechanisms. After the transport mechanism moves the fast-growing timber, the controller controls the two sealing mechanisms respectively, so that one of the sealing mechanisms seals one of the rectangular through holes and the other sealing mechanism seals the other rectangular through hole.

3. The equipment for superheated steam drying of fast-growing timber according to claim 1, characterized in that, The lifting device includes a connecting chain, a buckle, a fixed pulley, a connecting seat, a rotating shaft, and a first servo motor. The connecting seat is located on the side of the crossbeam facing the drying chamber. The fixed pulley is sleeved on the rotating shaft and is rotatably connected to the connecting seat via the rotating shaft. The first servo motor drives the end connected to the rotating shaft and is used to drive the fixed pulley to rotate via the rotating shaft. One end of the connecting chain is connected to the fixed pulley, and the other end of the connecting chain is provided with the buckle. The buckle is used to detachably connect the connecting chain after winding fast-growing timber. The controller is electrically connected to the first servo motor and is used to control the first servo motor to drive the fixed pulley to rotate, so that the end of the connecting chain with the buckle can be detachably connected to the fast-growing timber through the adjacent rectangular through hole.

4. The equipment for superheated steam drying of fast-growing timber according to claim 2 or 3, characterized in that, One of the sealing mechanisms is located on the side of one of the rectangular through holes opposite to the transport mechanism, and the other sealing mechanism is located on the side of the other rectangular through hole opposite to the transport mechanism. Each sealing mechanism includes a sealing plate, a connecting plate, a first telescopic member, and a hinge seat. The first telescopic member is disposed on the side of the rectangular through hole opposite to the transport mechanism, with its output end facing the transport mechanism. The telescopic path of the first telescopic member is perpendicular to the extension path of the rectangular through hole. The hinge seat is located between the first telescopic member and the rectangular through hole, and the sealing plate and the hinge seat are connected by a first... A hinge shaft is used for hinge connection, with the axial direction of the first hinge shaft parallel to the extension direction of the rectangular through hole; a connecting plate is disposed between the sealing plate and the first telescopic device, one end of the connecting plate and the output end of the first telescopic device are hinged via a second hinge shaft, and the other end of the connecting plate and the sealing plate are hinged via a third hinge shaft, with the first hinge shaft being parallel to both the second and third hinge shafts; a controller is electrically connected to the first telescopic device, and the controller is used to control the first telescopic device to drive the sealing plate through the connecting plate, so that the sealing plate seals the rectangular through hole.

5. The equipment for superheated steam drying of fast-growing timber according to claim 4, characterized in that, A sealing block is provided on the side of the sealing plate away from the connecting plate. A sealing layer is provided on the outer surface of the sealing block. When the sealing plate is used to seal the rectangular through hole, the sealing block is inserted into the rectangular through hole so that the sealing layer abuts against the inner wall surface of the rectangular through hole.

6. The equipment for superheated steam drying of fast-growing timber according to claim 4, characterized in that, A locking mechanism is also provided on the top side of the drying chamber. The controller is electrically connected to the locking mechanism. The controller is used to control the locking mechanism after the two sealing mechanisms seal the two rectangular through holes, so that the two sealing mechanisms are fixed in the adjacent rectangular through holes.

7. The equipment for superheated steam drying of fast-growing timber according to claim 6, characterized in that, The locking mechanism includes a pressure plate and a second telescopic device. The second telescopic device is disposed between the two rectangular through holes, and the pressure plate is disposed at the same end of the two rectangular through holes. The output end of the second telescopic device is connected to the pressure plate, and the telescopic direction of the second telescopic device is parallel to the extension direction of the rectangular through holes. The controller is electrically connected to the second telescopic device. The controller is used to control the second telescopic device to drive the pressure plate to move to a position above the two sealing plates after the two sealing plates seal the two rectangular through holes, thereby fixing the relative position of the sealing plates.

8. A method for drying fast-growing timber with superheated steam, characterized in that, The method employs the equipment for superheated steam drying of fast-growing timber as described in any one of claims 1-7, and the method includes: The fast-growing timber to be dried is transported into the work space and stacked using the transport mechanism. The steam generator supplies superheated steam to the working space, first heating the working space to 100°C at a rate of 15°C / h to 35°C / h, and then holding the temperature for 50 to 90 minutes. Next, the steam is heated to 160°C at a rate of 15°C / h to 25°C / h, and then held for 120 to 180 minutes. After the second heat preservation is completed, the temperature is reduced to 100°C at a cooling rate of 15°C / h to 20°C / h; After cooling to 100°C, allow the wood to cool naturally, and then remove the dried fast-growing timber.

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