Wood treatment equipment and wood treatment method

Abstract

The invention relates to wood treatment equipment and a wood treatment method. The wood processing equipment comprises a shell, a wood processing device and a control device, wherein a containing cavity is formed in the shell; the heating mechanism is connected with the shell; the pressure adjusting mechanism is communicated with the accommodating cavity, and the pressure adjusting mechanism is configured to be used for extracting gas in the accommodating cavity; the spraying mechanism is communicated with the containing cavity, and the spraying mechanism is configured to be used for spraying towards the interior of the containing cavity. According to the wood treatment equipment, the moisture of the inner core and the outer surface of the wood to be treated mainly escapes at the high-temperature stage at the same time by adjusting the humidity and reducing moisture escape in the initial temperature rising stage, so that the moisture escapes uniformly, the wood is stressed uniformly, the defects of cracking, deformation and the like do not occur easily, and the wood treatment quality is improved.

Description

Technical Field

[0001] This application relates to the field of wood treatment technology, and in particular to wood treatment equipment and wood treatment methods. Background Technology

[0002] As a naturally hygroscopic material, the moisture content of wood directly affects the quality of the final product. When wood is not dried evenly or has too high a moisture content, it is prone to shrinkage and expansion during subsequent processing and use, leading to defects such as deformation, cracking, or glue failure in wood products. Therefore, wood needs to be dried before processing.

[0003] In related technologies, kiln drying technology is commonly used for drying and other processing of wood. Specifically, the wood is placed in a drying kiln, and the drying purpose is achieved by raising the temperature inside the kiln. However, in the process of existing kiln drying technology, the core and the surface of the wood are heated unevenly, and the rate of moisture escaping varies significantly. This can easily lead to an imbalance of internal stress in the wood, ultimately causing quality defects such as cracking and deformation, which affects the efficiency and benefits of the wood processing industry. Summary of the Invention

[0004] Therefore, it is necessary to provide a wood processing equipment and method to address the problem that existing wood processing methods easily cause defects such as cracking and deformation in wood.

[0005] A wood processing device, the wood processing device comprising:

[0006] A housing having an internal receiving cavity;

[0007] A heating mechanism, which is connected to the housing;

[0008] A pressure regulating mechanism, which is connected to the receiving cavity, is configured to extract gas from the receiving cavity;

[0009] A spraying mechanism, which is in communication with the receiving cavity, is configured to spray into the receiving cavity.

[0010] In one embodiment, the housing includes:

[0011] The main body includes an inner liner and an outer shell. The inner liner has a receiving cavity and an opening. The outer shell is fitted over the inner liner, and a first interlayer is formed between the outer shell and the inner liner.

[0012] A sealing door, connected to the body, configured to block or open the opening.

[0013] In one embodiment, the inner liner includes a bottom and a wall. The bottom is provided with a support column and multiple first reinforcing ribs are provided on the inner side of the bottom. The wall is connected to the bottom and forms the receiving cavity, and the openings are formed at both ends of the receiving cavity.

[0014] The outer shell includes a shell bottom and a shell wall. The shell bottom is located at the bottom of the gallbladder bottom and is connected to the support column. The shell wall is located on the outside of the gallbladder wall and is connected to the shell bottom. The outer side of the shell wall is provided with multiple second reinforcing ribs. The shell bottom and the gallbladder bottom, and the shell wall and the gallbladder wall are spaced apart to form the first interlayer.

[0015] In one embodiment, the bottom of the shell includes a plurality of first arc-shaped connecting parts connected in sequence, and the edges of the first arc-shaped connecting parts are provided with support columns. The bottom of the shell includes a plurality of second arc-shaped connecting parts connected in sequence, and a second reinforcing member is provided between adjacent second arc-shaped connecting parts. The second arc-shaped connecting parts are arranged in a one-to-one correspondence with the first arc-shaped connecting parts. The second arc-shaped connecting parts have a first arc-shaped groove, the first arc-shaped connecting parts extend into the first arc-shaped groove, and the support column is connected to the second reinforcing member.

[0016] The gallbladder wall includes a plurality of third arc-shaped connecting portions connected in sequence and a third reinforcing member disposed between adjacent third arc-shaped connecting portions. The shell wall includes a plurality of fourth arc-shaped connecting portions connected in sequence and a fourth reinforcing member disposed between adjacent fourth arc-shaped connecting portions. The third arc-shaped connecting portions and the fourth arc-shaped connecting portions are arranged in a one-to-one correspondence. The fourth arc-shaped connecting portion has a second arc-shaped groove, and the third arc-shaped connecting portion extends into the second arc-shaped groove.

[0017] In one embodiment, the sealed door has a second interlayer inside;

[0018] The pressure regulating mechanism is connected to the first interlayer and the second interlayer respectively, and the pressure regulating mechanism is configured to extract gas from the first interlayer and the second interlayer or to vent gas into the first interlayer and the second interlayer.

[0019] In one embodiment, the pressure regulating mechanism includes:

[0020] A vacuum pump assembly, comprising a vacuum pump and a vacuum pipe, wherein the vacuum pump is connected to the receiving cavity, the first interlayer and the second interlayer respectively through the vacuum pipe;

[0021] A ventilation assembly, comprising a blower and a ventilation pipe, wherein the blower is connected to the first interlayer and the second interlayer respectively through the ventilation pipe.

[0022] In one embodiment, the heating mechanism includes a heating component disposed within the receiving cavity or on the outer wall of the housing;

[0023] And / or, the spraying mechanism includes a sprayer and a spray pipe, the sprayer being in communication with the receiving cavity via the spray pipe.

[0024] In one embodiment, the wood processing equipment further includes a steam mechanism, which includes a steam generator and a steam pipe, the steam generator being connected to the receiving cavity via the steam pipe;

[0025] And / or, the wood processing equipment further includes a positive pressure clamping mechanism, which includes a pressure plate, a positive pressure tube, and a positive pressure generator. The pressure plate is configured to be placed on top of the wood to be processed, and one end of the positive pressure tube is connected to the pressure plate and the other end is connected to the positive pressure generator.

[0026] And / or, the wood processing equipment further includes a pressure relief valve, which is in communication with the receiving cavity;

[0027] And / or, the wood processing equipment further includes a monitoring mechanism, which includes a temperature monitor, a pressure monitor, and a humidity monitor, wherein the temperature monitor, the pressure monitor, and the humidity monitor are disposed within the receiving cavity.

[0028] A wood treatment method, implemented using any one of the wood treatment devices described above, comprising the following steps:

[0029] During the heating phase, the wood to be treated is placed in the receiving cavity, sprayed into the receiving cavity to make the humidity inside the receiving cavity greater than the humidity inside the wood to be treated, and the heating mechanism is activated to raise the temperature inside the receiving cavity.

[0030] During the constant temperature stage, once the temperature inside the containment cavity rises to the preset temperature, the wood to be treated is heated and maintained at the preset temperature.

[0031] During the cooling stage, the gas inside the containment cavity is extracted to create a negative pressure environment, and the heating mechanism is turned off to lower the temperature inside the containment cavity, resulting in cooled wood to be treated.

[0032] In one embodiment, after the cooling phase, the wood treatment method further includes:

[0033] In the post-processing stage, after obtaining the cooled wood to be processed, steam is introduced into the receiving cavity to make the receiving cavity a positive pressure state, and the positive pressure state is maintained until the wood product is obtained, wherein the humidity of the wood product is greater than the humidity of the cooled wood to be processed.

[0034] The aforementioned wood processing equipment can regulate the humidity within the receiving cavity by spraying water through a spraying mechanism. Specifically, during the initial heating phase, the ambient humidity within the receiving cavity is increased to ensure it exceeds the humidity of the wood to be processed, thus preventing rapid evaporation of moisture from the wood's surface into the cavity. When the temperature within the receiving cavity reaches a sufficiently high level, such as 100°C, both the surface and core moisture of the wood evaporate simultaneously into the cavity, minimizing the moisture difference between the wood's interior and exterior. Simultaneously, the pressure within the receiving cavity is flexibly adjusted via a pressure regulating mechanism, working in conjunction with the heating mechanism to achieve precise temperature control, ensuring more even moisture release from both the wood's core and surface during processing. Therefore, this embodiment of the application, by regulating humidity and reducing moisture loss during the initial heating phase, allows moisture from both the wood's core and surface to escape simultaneously at high temperatures, resulting in uniform moisture release, even stress distribution on the wood, and reduced susceptibility to defects such as cracking and deformation, thereby improving the quality of wood processing. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the wood processing equipment according to an embodiment of this application.

[0036] Figure 2 This is a schematic diagram of the overall structure of the wood processing equipment according to an embodiment of this application from another perspective.

[0037] Figure 3 This is a schematic diagram of the inner liner structure according to an embodiment of this application.

[0038] Figure 4 This is a schematic diagram of the connection structure between the bottom of the gallbladder and the bottom of the shell in an embodiment of this application.

[0039] Figure 5 This is a schematic diagram of the connection structure between the gallbladder wall and the shell wall in an embodiment of this application.

[0040] Figure 6 This is a schematic diagram of the heating mechanism according to an embodiment of this application.

[0041] Figure 7 This is a schematic diagram of the positive pressure clamping mechanism according to an embodiment of this application.

[0042] Figure 8 This is a schematic diagram of the heating mechanism according to another embodiment of this application.

[0043] Figure 9 This is a partial structural schematic diagram of a wood processing device according to another embodiment of this application.

[0044] Figure 10 This is a flowchart of a wood processing method according to an embodiment of this application.

[0045] Figure 11 This is a flowchart of a wood processing method according to another embodiment of this application.

[0046] Figures 12 to 15 This is a graph showing the temperature and humidity changes during the wood processing in the embodiments of this application.

[0047] Figures 16 to 19 This is a comparison diagram of the properties of wood before and after carbonization in the embodiments of this application.

[0048] Icon labels:

[0049] 10. Timber processing equipment; 20. Timber to be processed;

[0050] 100. Shell; 110. Main body; 111. Inner liner; 1111. Bottom of the liner; 1112. Liner wall; 1113. Support column; 1114. First arc-shaped connecting part; 1115. Third arc-shaped connecting part; 1116. Third reinforcing member; 112. Outer shell; 1121. Shell bottom; 1122. Shell wall; 1123. Second arc-shaped connecting part; 1124. First arc-shaped groove; 1125. Fourth arc-shaped connecting part; 1126. Second arc-shaped groove; 1127. Second reinforcing member; 1128. Fourth reinforcing member; 113. Receiving cavity; 114. Opening; 115. First interlayer; 116. First reinforcing rib; 117. Second reinforcing rib; 120. Sealing door;

[0051] 200. Heating mechanism; 210. Heating component;

[0052] 300. Pressure regulating mechanism; 310. Vacuum extraction assembly; 311. Vacuum pump; 312. First vacuum extraction pipe; 313. Second vacuum extraction pipe; 314. First vacuum exhaust valve; 315. Second vacuum exhaust valve; 320. Ventilation assembly; 321. Blower; 322. Ventilation pipe; 323. Ventilation exhaust valve;

[0053] 400. Spraying mechanism; 410. Sprayer; 420. Spray pipe;

[0054] 500. Steam mechanism; 510. Steam generator; 520. Steam pipe;

[0055] 600. Positive pressure clamping mechanism; 610. Pressure plate; 620. Positive pressure pipe; 630. Positive pressure generator. Detailed Implementation

[0056] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0057] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0058] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0062] See Figures 1 to 7 The diagram shows a schematic representation of a wood processing device 10 according to an embodiment of this application. The wood processing device 10 provided in this embodiment includes a housing 100, a heating mechanism 200, a pressure regulating mechanism 300, and a spraying mechanism 400, and is suitable for wood drying, wood steaming, wood carbonization, and other processing techniques. Specifically, the housing 100 forms the outline of the wood processing device 10; for example, the housing 100 can be shaped like a cuboid or cylinder. The housing 100 has an internal cavity 113 for holding the wood 20 to be processed. For example, the wood 20 can be wet board, timber, dry board, timber, plywood, particleboard, laminated veneer lumber (LVL), rotary-cut veneer, etc. The heating mechanism 200 is connected to the housing 100 and provides heat to the cavity 113 to raise the temperature inside the cavity 113. For example, the heating mechanism 200 can heat the wood 20 to be treated to 100°C for high-temperature drying, or to 120°C-150°C for steaming, or to 120°C-210°C for dry or wet carbonization. The pressure regulating mechanism 300 is connected to the receiving cavity 113 and is configured to extract gas from the receiving cavity 113, thereby regulating the pressure within the receiving cavity 113. The spraying mechanism 400 is connected to the receiving cavity 113 and is configured to spray into the receiving cavity 113, thereby regulating the humidity within the receiving cavity 113.

[0063] In this embodiment, the wood processing equipment 10 can spray into the receiving cavity 113 via the spray mechanism 400 to regulate the humidity inside the cavity 113. Specifically, during the initial heating phase of the heating mechanism 200, the ambient humidity inside the receiving cavity 113 is increased to be greater than the humidity of the wood to be processed 20, thereby preventing the moisture on the surface of the wood to be processed 20 from rapidly evaporating into the receiving cavity 113. When the temperature inside the receiving cavity 113 rises sufficiently, for example to 100°C, the moisture on the surface of the wood to be processed 20 and the moisture inside the wood to be processed 20 will evaporate simultaneously into the receiving cavity 113, resulting in a smaller difference in moisture content between the inside and outside of the wood to be processed 20. Simultaneously, the pressure inside the receiving cavity 113 is flexibly adjusted via the pressure regulating mechanism 300, working in conjunction with the heating mechanism 200 to achieve precise temperature control, allowing the moisture on the surface and inside of the wood to be processed 200 to escape more evenly during the processing. Therefore, by adjusting the humidity, this embodiment of the application reduces the moisture loss during the initial heating stage, so that the moisture in the core and surface of the wood to be treated 20 mainly escapes at the same time during the high temperature stage, thereby making the moisture escape evenly, the wood is subjected to uniform stress, and is less prone to defects such as cracking and deformation, which is beneficial to improving the quality of wood treatment.

[0064] See Figures 1 to 5 As shown, in some embodiments, the housing 100 includes a main body 110 and a sealing door 120. The main body 110 includes an inner liner 111 and an outer shell 112. The inner liner 111 has a receiving cavity 113 inside for accommodating the wood to be treated 20, and the inner liner 111 has an opening 114 for the wood to be treated 20 to enter and exit. The outer shell 112 is fitted over the inner liner 111, and the gap between the outer shell 112 and the inner liner 111 forms a first interlayer 115. For example, the inner liner 111 can be configured as a cuboid structure with a length, width, and height of 10000*7000*6000 (mm), and the outer shell 112 can be configured as a cuboid structure with a length, width, and height of 10310*7440*6670 (mm). The thickness of the first interlayer 115 is approximately 200 mm, and the wood volume of the receiving cavity 113 is ≥160 m³. 3 The inner liner 111 can be made of stainless steel 430 for its high temperature resistance and corrosion resistance, while the outer shell 112 can be made of Q355 steel plate to ensure high strength. The first interlayer 115 formed between the inner liner 111 and the outer shell 112 reduces heat exchange between the containment cavity 113 and the outside environment. In particular, when the first interlayer 115 is evacuated, it provides good insulation, thereby ensuring that the temperature inside the containment cavity 113 remains stable and reducing heat loss to minimize energy consumption.

[0065] The sealing door 120 is connected to the main body 110 and is configured to seal or open the opening 114 to achieve sealing or opening of the receiving cavity 113. For example, the sealing door 120 can be connected to the main body 110 via a high-temperature resistant silicone ring and a hydraulic locking device. The sealing door 120 can reliably seal the opening 114, ensuring the airtightness of the receiving cavity 113, preventing steam leakage or infiltration of external gases, ensuring the stability of temperature, humidity, and pressure regulation within the receiving cavity 113, and further improving the controllability of the wood processing process.

[0066] See Figures 1 to 5 As shown, in some embodiments, the inner liner 111 includes a bottom 1111 and a wall 1112. The bottom 1111 is provided with multiple support columns 1113, which are cylindrical. The wall 1112 forms the left and right sides and the top of the inner liner 111, and the bottom 1111 forms the bottom of the inner liner 111. The wall 1112 is connected to the bottom 1111. For example, the wall 1112 and the bottom 1111 can be connected by welding, specifically by welding on both the inner and outer sides of the wall 1112 and the bottom 1111 to ensure the stability and sealing of the weld. The wall 1112 and the bottom 1111 form a receiving cavity 113 and an opening 114. Specifically, refer to... Figure 3 As shown, after the gallbladder wall 1112 is connected to the gallbladder base 1111, openings 114 are formed at both ends of the receiving cavity 113, that is, openings 114 are provided on the front and rear sides of the inner bladder 111, and sealing doors 150 are provided at the front and rear respectively for sealing. Figure 7 As shown, when transporting the wood to be treated 20 into the receiving cavity 113 or taking out the wood to be treated 20, multiple layers of wood can be stacked and transported by a traction machine, track, rollers, etc., so that the wood to be treated 20 enters the receiving cavity 113 from the front opening 114 and leaves the receiving cavity 113 from the rear opening 114, so as to transfer the wood to be treated 20.

[0067] The outer shell 112 includes a shell bottom 1121 and a shell wall 1122. The shell bottom 1121 is located at the bottom of the inner liner 1111 and connected to a support column 1113. The support column 1113 separates the inner liner 1111 from the shell bottom 1121 and provides a stable connection between them, which helps to enhance the rigidity of the overall structure of the inner liner 111 and the outer shell 112. The shell wall 1122 is located on the outer side of the inner liner 1112 and connected to the shell bottom 1121. For example, the shell wall 1122 and the shell bottom 1121 can be connected by welding. Specifically, welding is performed on both the inner and outer sides of the shell wall 1122 and the shell bottom 1121 to ensure the stability and sealing of the weld. A first interlayer 115 is formed between the shell bottom 1121 and the inner liner 1111, and between the shell wall 1122 and the inner liner 1112. The first interlayer 115 surrounds the entire outer side of the inner liner 111 to avoid heat conduction loss caused by direct contact between the inner liner 111 and the outer shell 112. While improving the structural stability and durability of the wood processing equipment 10, it further optimizes the heat preservation effect.

[0068] See Figure 9 As shown, the inner side of the bottom plate 1111 is provided with multiple first reinforcing ribs 116. Specifically, the first reinforcing ribs 116 can be configured as long plate-shaped structures, and the first reinforcing ribs 116 and the inner side of the bottom plate 1111 are connected by full penetration welds. The interval between adjacent first reinforcing ribs 116 can be 1000mm to improve the structural stability of the bottom plate 1111. Furthermore, the outer side of the shell wall 1122 is provided with multiple second reinforcing ribs 117. Specifically, the second reinforcing ribs 117 can also be configured as long plate-shaped structures, and the second reinforcing ribs 117 and the inner side of the shell wall 1122 are connected by full penetration welds. The interval between adjacent second reinforcing ribs 117 can be 600mm to improve the structural stability of the shell wall 1122.

[0069] See Figures 3 to 4As shown, in some embodiments, the bottom plate 1111 includes a plurality of first arc-shaped connecting portions 1114 connected in sequence, and the edges of the first arc-shaped connecting portions 1114 are provided with support posts 1113. Specifically, the plurality of first arc-shaped connecting portions 1114 are arranged side by side, and each first arc-shaped connecting portion 1114 is provided with a support post 1113 on its edge, that is, a plurality of support posts 1113 are provided between adjacent first arc-shaped connecting portions 1114. The first arc-shaped connecting portion 1114 is elongated, and the outer surface of the first arc-shaped connecting portion 1114 is semi-cylindrical, for example, the radius of the semi-cylindrical shape is 550mm. The inner surface of the first arc-shaped connecting portion 1114 is provided with a groove to reduce the thickness of the first arc-shaped connecting portion 1114 and reduce material consumption, for example, the thickness of the first arc-shaped connecting portion 1114 can be 6mm. Optionally, the inner surface of the first arc-shaped connecting portion 1114 is provided with a plurality of first reinforcing ribs 116 to improve structural stability. The shell bottom 1121 includes a plurality of second arc-shaped connecting portions 1123 connected in sequence, with a second reinforcing member 1127 provided between adjacent second arc-shaped connecting portions 1123. For example, the second reinforcing member 1127 can be an I-beam, and the material can be Q355. The second arc-shaped connecting portions 1123 are elongated, and the second reinforcing member 1127 can improve the connection strength between the plurality of second arc-shaped connecting portions 1123, making the shell bottom 1121 structure more stable. The shape of the second arc-shaped connecting portion 1123 is similar to the shape of the first arc-shaped connecting portion 1114. Specifically, the outer surface of the second arc-shaped connecting portion 1123 is semi-cylindrical. The second arc-shaped connecting portions 1123 and the first arc-shaped connecting portions 1114 are provided one-to-one, and each second arc-shaped connecting portion 1123 is provided with a first arc-shaped groove 1124 that mates with the first arc-shaped connecting portion 1114. When the bottom of the bladder 1111 is connected to the bottom of the shell 1121, the outer side of the first arc-shaped connecting part 1114 extends into the first arc-shaped groove 1124, and the support column 1113 is connected to the second reinforcing member 1127, so that the first arc-shaped connecting part 1114 and the first arc-shaped groove 1124 do not come into contact, thus reducing heat transfer.

[0070] See Figure 5As shown, the gallbladder wall 1112 includes a plurality of third arc-shaped connecting portions 1115 connected in sequence and a third reinforcing member 1116 disposed between adjacent third arc-shaped connecting portions 1115. For example, the third reinforcing member 1116 can be an I-beam. The plurality of third arc-shaped connecting portions 1115 are arranged side by side, and the third reinforcing member 1116 can improve the connection strength between the plurality of third arc-shaped connecting portions 1115, making the structure of the gallbladder wall 1112 more stable. The third arc-shaped connecting portion 1115 is elongated, and the outer surface of the third arc-shaped connecting portion 1115 is semi-cylindrical, for example, the radius of the semi-cylindrical shape is 654mm. The inner surface of the third arc-shaped connecting portion 1115 is provided with a groove to facilitate reducing the thickness of the third arc-shaped connecting portion 1115 and reducing material consumption. For example, the thickness of the third arc-shaped connecting portion 1115 can be 6mm. The shell wall 1122 includes a plurality of fourth arc-shaped connecting portions 1125 connected in sequence and a fourth reinforcing member 1128 disposed between adjacent fourth arc-shaped connecting portions 1125. Optionally, the outer surface of the fourth arc-shaped connecting portion 1125 is provided with multiple second reinforcing ribs 117 to improve structural stability. For example, the fourth reinforcing member 1128 can be set as an I-beam, and the fourth arc-shaped connecting portion 1125 is elongated. The fourth reinforcing member 1128 can improve the connection strength between multiple fourth arc-shaped connecting portions 1125, making the shell wall 1122 structure more stable. The shape of the fourth arc-shaped connecting portion 1125 is similar to that of the third arc-shaped connecting portion 1115. Specifically, the outer surface of the fourth arc-shaped connecting portion 1125 is semi-cylindrical. The third arc-shaped connecting portion 1115 and the fourth arc-shaped connecting portion 1125 are provided in a one-to-one correspondence, and each fourth arc-shaped connecting portion 1125 is provided with a second arc-shaped groove 1126 that mates with the third arc-shaped connecting portion 1115. When the inner wall 1112 is connected to the outer wall 1122, the third arc-shaped connecting part 1115 extends into the second arc-shaped groove 1126, and the third arc-shaped connecting part 1115 and the second arc-shaped groove 1126 do not come into contact. Furthermore, by providing the second reinforcing member 1127, the third reinforcing member 1116, and the fourth reinforcing member 1128, the structural strength is improved, allowing the receiving cavity 113 to withstand greater pressure, facilitating the pressure treatment of the wood.

[0071] Therefore, the bottom of the inner liner 1111 and the bottom of the outer shell 1121, as well as the inner wall 1112 and the outer wall 1122, are all designed with an arc-shaped mating structure. The nesting of the first arc-shaped connecting part 1114 with the second arc-shaped groove 1126 and the third arc-shaped connecting part 1115 with the second arc-shaped groove 1126 can disperse the stress generated by thermal expansion and contraction, reducing the risk of structural deformation. At the same time, the arc-shaped structure can improve the compressive strength of the inner liner 111 and the outer shell 112, which is conducive to forming a stable and sealed first interlayer 115.

[0072] Furthermore, in some embodiments, the interior of the sealing door 120 has a second interlayer. Specifically, the structure of the sealing door 120 can be configured to be the same as that of the inner wall 1112 and the shell wall 1122 in the above embodiments. The second interlayer cooperates with the first interlayer 115 to further improve the heat preservation effect.

[0073] The pressure regulating mechanism 300 is connected to the first interlayer 115 and the second interlayer, respectively. The pressure regulating mechanism 300 is configured to extract or introduce gas into the first and second interlayers. When enhanced sealing is required, the pressure regulating mechanism 300 can extract gas from the first and second interlayers, placing them under negative pressure or even near-vacuum, thus improving thermal insulation and reducing heat loss through the sealing door 120. Furthermore, when pressure balancing or heat dissipation is needed, the pressure regulating mechanism 300 can introduce air into the first and second interlayers, such as cold air or natural ventilation, to quickly lower the temperature within the receiving cavity 113.

[0074] See Figure 1 and Figure 2 As shown, in some embodiments, the pressure regulating mechanism 300 includes a vacuum assembly 310 and a venting assembly 320. The vacuum assembly 310 includes a vacuum pump 311 and a vacuum pipe. The vacuum pump 311 is connected to the receiving cavity 113, the first interlayer 115, and the second interlayer via the vacuum pipe. Specifically, the vacuum pipe can be divided into a first vacuum pipe 312 and a second vacuum pipe 313. The vacuum pump 311 is connected to the receiving cavity 113 via the first vacuum pipe 312 and to the first interlayer 115 via the second vacuum pipe 313. Furthermore, a first vacuum exhaust valve 314 is provided on the first vacuum pipe 312, and a second vacuum exhaust valve 315 is provided on the second vacuum pipe 313. The first vacuum exhaust valve 314 and the second vacuum exhaust valve 315 can assist in exhaust during vacuuming and play a pressure relief role when the pressure in the receiving cavity 113 and the first interlayer 115 is too high, thereby improving safety. For example, the vacuum pump 311 model can be selected as JZJP2B1200-421P Roots-water ring vacuum unit to meet the pumping requirements. The vacuum pump 311 of the pumping assembly 310 can accurately extract the gas in the receiving cavity 113, the first interlayer 115 and the second interlayer through the pumping pipe to achieve negative pressure regulation in each area. For example, during the wood cooling stage, the gas in the receiving cavity 113 can be extracted to accelerate cooling.

[0075] The ventilation assembly 320 includes a blower 321 and a ventilation pipe 322. The blower 321 is connected to the first interlayer 115 and the second interlayer via the ventilation pipe 322. Furthermore, multiple ventilation and exhaust valves 323 can be installed on the housing 100, each connected to the receiving cavity 113, the first interlayer 115, and the second interlayer for rapid exhaust. The blower 321 of the ventilation assembly 320 can introduce gas into the first interlayer 115 and the second interlayer via the ventilation pipe 322, for example, introducing cold air or natural wind to accelerate cooling. Therefore, by setting up independent extraction and ventilation assemblies 310 and 320, flexible and precise control of the pressure and temperature of the receiving cavity 113, the first interlayer 115, and the second interlayer can be achieved, ensuring the stability of pressure parameters at each stage of wood processing, while also improving the cooling effect and enhancing the applicability of the wood processing equipment 10.

[0076] See Figure 1 and Figure 6 As shown, in some embodiments, the heating mechanism 200 includes a heating element 210 disposed within the receiving cavity 113. For example, the heating element 210 can be an electromagnetic hot air furnace, with multiple electromagnetic hot air furnaces arranged side-by-side on the top of the receiving cavity 113. In this embodiment, the heating temperature range of the heating mechanism 200 can be from room temperature to 240°C to meet the requirements of wood drying, steaming, and carbonization. Traditional heating mechanisms 200 are mostly disposed outside the housing 100, resulting in low heat transfer efficiency and uneven heating. In this embodiment, the heating element 210 is directly disposed within the receiving cavity 113, allowing direct heating of the gas and the wood 20 to be treated within the receiving cavity 113, resulting in faster heating and more uniform temperature distribution.

[0077] See Figure 8 As shown, in some embodiments, the heating element 210 may be disposed outside the housing 100. Specifically, the heating element 210 may be disposed on the top outer wall of the housing 100 and communicate with the receiving cavity 113 of the housing 100 through an air inlet channel and an air outlet channel, thereby heating by circulating hot air. This avoids the heating element 210 occupying the internal space of the receiving cavity 113, allowing the receiving cavity 113 to be used more fully for heating the wood 20 to be treated.

[0078] See Figure 2 As shown, the spraying mechanism 400 includes a sprayer 410 and a spray pipe 420. The sprayer 410 is connected to the receiving cavity 113 through the spray pipe 420. The sprayer 410 sprays into the receiving cavity 113 through the spray pipe 420, which can effectively increase the humidity inside the receiving cavity 113. Moreover, the sprayer 410 has low energy consumption, which helps to reduce costs.

[0079] Further, see Figure 2As shown, in some embodiments, the wood processing equipment 10 further includes a steam mechanism 500, which includes a steam generator 510 and a steam pipe 520. The steam generator 510 is connected to the receiving cavity 113 through the steam pipe 520. After the wood has been dried, if the wood's moisture content is too low, i.e., the wood is too dry, it is very easy for the wood to absorb water and become damaged if placed in a humid environment. In this embodiment, a steam generator 510 is used. The steam generator 510 generates a large amount of steam, which can quickly and evenly humidify the wood, for example, to a moisture content of 8%-12%. This provides suitable moisture content for the treated wood, making it suitable for a wider range of applications. Furthermore, the steam generator 510 produces pure gaseous water with no liquid residue, preventing the wood from becoming damp or moldy.

[0080] Furthermore, in some embodiments, see [reference] Figure 7 As shown, the wood processing equipment 10 also includes a positive pressure clamping mechanism 600, which includes a pressure plate 610, a positive pressure pipe 620, and a positive pressure generator 630. When the wood to be processed 20 is stacked, the pressure plate 610 is placed on top of the wood to be processed 20. The pressure plate 610 can be selected as a steel plate with a large weight to clamp the layers of wood to be processed 20. One end of the positive pressure pipe 620 is connected to the pressure plate 610, and the other end is connected to the positive pressure generator 630. For example, the positive pressure generator 630 can be selected as a blower capable of blowing air into the positive pressure pipe 620, thereby creating positive pressure and applying force to the pressure plate 610, further increasing the clamping force of the pressure plate 610 on the wood to be processed 20, and preventing the wood itself from deforming when negative pressure or even vacuum is drawn into the receiving cavity 113.

[0081] Furthermore, in some embodiments, the wood processing equipment 10 also includes a pressure relief valve connected to the receiving cavity 113 for pressure relief to ensure safety.

[0082] Furthermore, in some embodiments, the wood processing equipment 10 also includes a monitoring mechanism, comprising a temperature monitor, a pressure monitor, and a humidity monitor, all disposed within the receiving cavity 113. For example, the temperature monitor may include a pin-type temperature sensor with a temperature monitoring range of 0°C-230°C, used to monitor the temperature of the wood core. The temperature monitor may also include other temperature sensors for monitoring the ambient temperature within the receiving cavity 113. Multi-point temperature monitoring using multiple temperature monitors facilitates precise control of the heating temperature, allowing moisture in the wood core and on the wood surface to escape synchronously, preventing structural defects in the wood and avoiding localized overheating. The humidity monitor may include a pin-type humidity sensor with a humidity monitoring range of 3%-100%, used to monitor the humidity of the wood core. Similarly, the humidity monitor may include other humidity sensors for monitoring the ambient humidity within the receiving cavity 113 to determine the spray volume of the spray mechanism 400, thereby ensuring sufficient removal of moisture from the wood. The pressure monitor, which can be a pressure sensor, is installed inside the receiving cavity 113 to monitor the environmental pressure within the cavity, thereby providing a basis for the evacuation or ventilation operation of the pressure regulating mechanism 300. Thus, by monitoring temperature, pressure, and humidity in real time, the operating status of each mechanism can be adjusted promptly, ensuring that the entire wood processing process is within the optimal parameter range, thereby reducing the risk of wood spoilage due to parameter malfunction.

[0083] Therefore, the wood processing equipment 10 of this application embodiment integrates multiple functions such as wood drying, carbonization, steaming, high temperature, high pressure, and vacuum intelligent heat treatment. It has a high degree of integration, a small footprint, higher production capacity, lower cost, and can improve the yield of high-quality wood products.

[0084] Because traditional wood processing methods involve direct heating, the moisture on the surface of the wood escapes rapidly due to the high temperature, while the moisture in the core of the wood cannot escape at the same time, resulting in a difference in internal and external stress that causes cracking and deformation.

[0085] To address the aforementioned problems, another embodiment of this application provides a wood treatment method implemented using the wood treatment apparatus 10 based on any of the above embodiments. See also... Figure 10 As shown, the wood treatment method includes the following steps:

[0086] S10, Heating Stage: The wood to be treated 20 is placed in the receiving cavity 113, and spray is applied into the receiving cavity 113 to make the humidity inside the receiving cavity 113 greater than the humidity of the wood to be treated 20. The heating mechanism 200 is then activated to raise the temperature inside the receiving cavity 113. For example, when heating by the heating mechanism 200, the heating rate can be controlled within the range of 10℃ / h-100℃ / h. Optionally, spraying can be applied into the receiving cavity 113 by the spraying mechanism 400. For example, after the humidity inside the receiving cavity 113 gradually rises to 98% due to spraying, as the moisture in the wood evaporates, the water vapor inside the receiving cavity 113 will reach saturation, and the pressure inside the receiving cavity 113 will gradually increase. High-pressure steam has a higher density and stronger thermal conductivity, which helps to shorten the heating time. When the pressure inside the receiving cavity 113 exceeds a certain limit, for example, a pressure of 6 atm, the pressure can be automatically released by the pressure relief valve to ensure safety. In addition, once the steam in the containment cavity 113 reaches saturation, the saturated steam condenses and releases latent heat, which can directly heat the surface of the wood, further shortening the heating time.

[0087] S20, the constant temperature stage: After the temperature inside the receiving cavity 113 rises to the preset temperature, it is maintained at the preset temperature for heating treatment of the wood 20 to be treated. For example, in the constant temperature stage, the wood 20 to be treated can be heated to 100°C for drying, or heated to 120°C-150°C for steaming, or heated to 120°C-210°C for dry carbonization or wet carbonization. Optionally, the temperature accuracy of the constant temperature stage can be ensured to be ±2°C by adjusting the heating mechanism 200 to ensure heating stability.

[0088] S30, during the cooling stage, the gas in the receiving cavity 113 is extracted, creating a negative pressure state within the cavity. The heating mechanism 200 is then turned off to lower the temperature within the cavity 113, resulting in the cooled and treated wood 20. For example, during the cooling stage, the pressure is slowly released and the temperature is lowered to <60°C to prevent stress cracking, thus obtaining the cooled and treated wood 20. It should also be noted that in some cases, the wood may contain organic matter, including natural substances such as resins or pollutants such as formaldehyde. In this embodiment, the gas in the receiving cavity 113 is extracted during the cooling stage, creating a negative pressure state within the cavity. This negative pressure environment can draw out the organic matter inside the wood, especially showing a good removal effect for pollutants such as formaldehyde.

[0089] According to the wood processing method in this embodiment, during the heating stage, steam is first introduced to increase the humidity inside the receiving cavity 113, preventing the rapid loss of moisture from the wood's surface and reducing the moisture difference between the inside and outside of the wood. Then, during the constant temperature stage, a stable heating temperature is maintained, allowing moisture from both the wood's core and surface to escape synchronously and evenly. Next, during the cooling stage, the receiving cavity 113 is controlled under negative pressure. This negative pressure accelerates the escape of moisture from the wood's interior while preventing secondary penetration of external moisture. Therefore, this wood processing method achieves uniform moisture escape and stable cooling, effectively preventing defects such as cracking and deformation during the wood processing process, thus improving the quality of the wood processing. Furthermore, heating with high-pressure steam and vacuuming the first interlayer 115 for insulation shortens heating time, reduces heat loss, and lowers costs. Simultaneously, since different temperatures are required at each stage, heating, insulation, and cooling can be flexibly adjusted according to off-peak and peak electricity rates, resulting in lower electricity costs and further savings in wood processing costs.

[0090] Further, see Figure 11 As shown, in some embodiments, after the cooling phase, the wood treatment method further includes:

[0091] S40, Post-processing stage: After obtaining the cooled wood to be processed 20, steam is introduced into the receiving cavity 113 to make the receiving cavity 113 under positive pressure. The positive pressure is maintained until the wood product is obtained, wherein the humidity of the wood product is greater than the humidity of the cooled wood to be processed 20.

[0092] It is understandable that, due to the different application regions of wood products, the humidity levels of the air vary in different regions. Therefore, the humidity of wood products should be adjusted flexibly. In this embodiment, when the humidity of the wood is too low, positive pressure steam can be introduced through the steam mechanism 500 to replenish an appropriate amount of moisture to the cooled wood, restoring the wood humidity to a more stable state, reducing the hygroscopicity and brittleness of the wood, so that the corresponding wood products can be used in more humid environments.

[0093] In one specific embodiment, the wood treatment process is as follows: First, the wood to be treated 20 is heated (time 2:00-10:00, duration 6-8 hours). Taking Xishuangbanna, which has high humidity, as an example, the natural temperature is 25℃. The wood to be treated 20 is placed in the receiving cavity 113, and spray is applied into the receiving cavity 113 to bring the humidity inside the receiving cavity 113 close to 100%. As the moisture in the wood evaporates, the pressure inside the receiving cavity 113 approaches 0.6MPa, and the heating mechanism 200 is activated to raise the temperature inside the receiving cavity 113 to 200℃-300℃. Note that if the pressure is too high, the exhaust valve will automatically open to release the air to ensure safety. Next, the wood to be treated 20 undergoes constant temperature dehumidification and cooling (10:00-18:00, 8-10 hours). Specifically, after heating to the predetermined temperature, the temperature is kept constant. After constant temperature treatment, the heating mechanism 200 is turned off, and the wood moisture content is repeatedly reduced by pressurizing and venting. When the wood moisture content drops below 30%, the vacuum pump is started to create a negative pressure environment for moisture penetration, accelerating the dehumidification of the wood. Then, the wood to be treated 20 undergoes secondary humidification (18:00-2:00, 8 hours). After the temperature inside the containment chamber 113 drops to 50℃-60℃, the steam generator 1t / h is started, and saturated steam at 166℃ is used to force moisture into the wood cell cavities, increasing the wood moisture content from 3% to about 10%.

[0094] In this embodiment, multiple groups of wood were used, and the above processing procedure was repeated for each group. The wood cores were dried at 100℃, carbonized at a low temperature of 150℃, carbonized at a medium temperature of 180℃, and carbonized at a high temperature of 210℃, respectively. The processing results are as follows: Figures 12 to 15 As shown, the wood can effectively remove moisture, achieving drying and carbonization treatment. Furthermore, as... Figures 16 to 19 As shown, after carbonizing E0 urea-formaldehyde resin for rubberwood LVL plywood, E0 urea-formaldehyde resin for eucalyptus plywood, E1 urea-formaldehyde resin for pine plywood, and E1 urea-formaldehyde resin for eucalyptus plywood, the formaldehyde content is significantly reduced. This demonstrates that the wood processing equipment 10 and processing method of this application can effectively remove pollutants such as formaldehyde. Furthermore, since the required temperatures and energy consumption differ at each stage, heating and maintaining a constant temperature can be performed during off-peak electricity usage, while cooling can be performed during peak electricity usage. This saves on electricity costs and reduces wood processing costs.

[0095] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A wood processing device, characterized in that, The wood processing equipment includes: A housing, wherein the housing has an internal receiving cavity; A heating mechanism, which is connected to the housing; A pressure regulating mechanism, which is connected to the receiving cavity, is configured to extract gas from the receiving cavity; A spraying mechanism, which is in communication with the receiving cavity, is configured to spray into the receiving cavity.

2. The wood processing equipment according to claim 1, characterized in that, The housing includes: The main body includes an inner liner and an outer shell. The inner liner has a receiving cavity and an opening. The outer shell is fitted over the inner liner, and a first interlayer is formed between the outer shell and the inner liner. A sealing door, connected to the body, configured to block or open the opening.

3. The wood processing equipment according to claim 2, characterized in that, The inner liner includes a bottom and a wall. The bottom is provided with a support column and multiple first reinforcing ribs are provided on the inner side of the bottom. The wall is connected to the bottom and forms the receiving cavity, and the openings are formed at both ends of the receiving cavity. The outer shell includes a shell bottom and a shell wall. The shell bottom is located at the bottom of the gallbladder bottom and is connected to the support column. The shell wall is located on the outside of the gallbladder wall and is connected to the shell bottom. The outer side of the shell wall is provided with multiple second reinforcing ribs. The shell bottom and the gallbladder bottom, and the shell wall and the gallbladder wall are spaced apart to form the first interlayer.

4. The wood processing equipment according to claim 3, characterized in that, The bottom of the shell includes a plurality of first arc-shaped connecting parts connected in sequence, and the edges of the first arc-shaped connecting parts are provided with support columns. The bottom of the shell includes a plurality of second arc-shaped connecting parts connected in sequence, and a second reinforcing member is provided between adjacent second arc-shaped connecting parts. The second arc-shaped connecting parts are arranged in a one-to-one correspondence with the first arc-shaped connecting parts. The second arc-shaped connecting parts have a first arc-shaped groove, the first arc-shaped connecting parts extend into the first arc-shaped groove, and the support column is connected to the second reinforcing member. The gallbladder wall includes a plurality of third arc-shaped connecting portions connected in sequence and a third reinforcing member disposed between adjacent third arc-shaped connecting portions. The shell wall includes a plurality of fourth arc-shaped connecting portions connected in sequence and a fourth reinforcing member disposed between adjacent fourth arc-shaped connecting portions. The third arc-shaped connecting portions and the fourth arc-shaped connecting portions are arranged in a one-to-one correspondence. The fourth arc-shaped connecting portion has a second arc-shaped groove, and the third arc-shaped connecting portion extends into the second arc-shaped groove.

5. The wood processing equipment according to claim 2, characterized in that, The sealed door has a second interlayer inside; The pressure regulating mechanism is connected to the first interlayer and the second interlayer respectively, and the pressure regulating mechanism is configured to extract gas from the first interlayer and the second interlayer or to vent gas into the first interlayer and the second interlayer.

6. The wood processing equipment according to claim 5, characterized in that, The pressure regulating mechanism includes: A vacuum pump assembly, comprising a vacuum pump and a vacuum pipe, wherein the vacuum pump is connected to the receiving cavity, the first interlayer and the second interlayer respectively through the vacuum pipe; A ventilation assembly, comprising a blower and a ventilation pipe, wherein the blower is connected to the first interlayer and the second interlayer respectively through the ventilation pipe.

7. The wood processing equipment according to claim 1, characterized in that, The heating mechanism includes a heating component, which is disposed within the receiving cavity or outside the housing; And / or, the spraying mechanism includes a sprayer and a spray pipe, the sprayer being in communication with the receiving cavity via the spray pipe.

8. The wood processing equipment according to claim 1, characterized in that, The wood processing equipment also includes a steam mechanism, which includes a steam generator and a steam pipe, and the steam generator is connected to the receiving cavity through the steam pipe. And / or, the wood processing equipment further includes a positive pressure clamping mechanism, which includes a pressure plate, a positive pressure tube, and a positive pressure generator. The pressure plate is configured to be placed on top of the wood to be processed, and one end of the positive pressure tube is connected to the pressure plate and the other end is connected to the positive pressure generator. And / or, the wood processing equipment further includes a pressure relief valve, which is in communication with the receiving cavity; And / or, the wood processing equipment further includes a monitoring mechanism, which includes a temperature monitor, a pressure monitor, and a humidity monitor, wherein the temperature monitor, the pressure monitor, and the humidity monitor are disposed within the receiving cavity.

9. A method for treating wood, characterized in that, Based on the wood treatment equipment according to any one of claims 1-8, the wood treatment method includes the following steps: During the heating phase, the wood to be treated is placed in the receiving cavity, sprayed into the receiving cavity to make the humidity inside the receiving cavity greater than the humidity inside the wood to be treated, and the heating mechanism is activated to raise the temperature inside the receiving cavity. During the constant temperature stage, once the temperature inside the containment cavity rises to the preset temperature, the wood to be treated is heated and maintained at the preset temperature. During the cooling stage, the gas inside the containment cavity is extracted to create a negative pressure environment, and the heating mechanism is turned off to lower the temperature inside the containment cavity, resulting in cooled wood to be treated.

10. The wood treatment method according to claim 9, characterized in that, Following the cooling phase, the wood treatment method further includes: In the post-processing stage, after obtaining the cooled wood to be processed, steam is introduced into the receiving cavity to make the receiving cavity a positive pressure state, and the positive pressure state is maintained until the wood product is obtained, wherein the humidity of the wood product is greater than the humidity of the cooled wood to be processed.

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