Device for treating wood through cooperation of microwaves and chemistry

Abstract

The invention discloses a device for microwave and chemical treatment of wood. The device comprises a furnace body, a resonant cavity, a plurality of storage trays, a microwave generation system and a control system. The resonant cavity is mounted in the furnace body, an exhaust system and a temperature measuring system are mounted at the top of the resonant cavity, and an air inlet system and a liquid discharging system are mounted at the bottom; the plurality of storage trays are detachably connected in the resonant cavity; the output end of the microwave generation system is mounted on the outer wall of the resonant cavity; and the control system is mounted on the furnace body. The device is simple in structure and convenient to operate, wood is treated through a high-power microwave synergistic chemical method, the wood treatment time is shortened, and the permeability and treatment uniformity of large-breadth wood and the stability of product quality can be improved; the wood treatment device can be suitable for wood processing fields such as wood chemical modification, wood blasting treatment, wood drying, wood heat treatment, wood microwave puffing treatment, wood bleaching, wood dyeing, wood softening, wood component refining and delignification.

Description

Technical Field

[0001] The invention relates to the technical field of wood processing, in particular to a device for microwave-assisted chemical processing of wood. Background Art

[0002] Due to defects such as poor dimensional stability, low strength, and easy decay, fast-growing wood is difficult to replace high-quality wood resources, limiting its wider application. Therefore, fast-growing wood is modified to achieve functional improvement, increase its added value, make good use of inferior wood, and make high-value use of low-value wood, providing technical support for the transformation and upgrading of the wood processing industry.

[0003] Among the many existing wood modification technologies, the method of removing lignin by top-down method and then functionalizing the delignified template has received extensive attention in recent years. At present, the method of removing lignin from wood is usually chemical method. However, due to the anisotropy and poor permeability of wood itself and the differences in moisture content and temperature inside the raw materials, the chemical treatment of large-sized wood has the disadvantages of long treatment time and uneven removal, and the quality of the wood products treated by this method also varies greatly.

[0004] Therefore, a device for microwave-assisted chemical treatment of wood is proposed to improve its permeability, treatment uniformity and stability of product quality. Summary of the invention

[0005] The object of the present invention is to provide a device for microwave-assisted chemical treatment of wood, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a device for microwave-assisted chemical treatment of wood, comprising:

[0007] A furnace body, wherein one side of the furnace body is provided with a furnace door that can be opened and closed;

[0008] A resonant cavity, wherein the resonant cavity is installed in the furnace body, an exhaust system and a temperature measurement system are installed on the top of the resonant cavity, and an air intake system and a liquid discharge system are installed on the bottom;

[0009] A plurality of storage trays, wherein the plurality of storage trays are detachably connected to the resonant cavity, and the storage trays are used to place wood and allow the wood to be immersed in the chemical treatment liquid;

[0010] A microwave generating system, wherein the output end of the microwave generating system is mounted on the outer wall of the resonant cavity;

[0011] A control system is installed on the furnace body, and the microwave generating system and the temperature measuring system are both electrically connected to the control system.

[0012] According to a device for microwave-assisted chemical treatment of wood provided by the present invention, the microwave generating system comprises a plurality of microwave generators and a plurality of microwave power supplies, and the plurality of microwave power supplies are arranged in a one-to-one correspondence with the plurality of microwave generators; the microwave generators and the microwave power supplies are both electrically connected to the control system;

[0013] A plurality of microwave generators are respectively installed on both sides of the outer wall of the resonance cavity, and a waveguide is installed between the microwave generator and the outer wall of the resonance cavity; and a plurality of microwave power supplies are installed on the inner bottom wall of the furnace body.

[0014] According to a device for microwave-assisted chemical treatment of wood provided by the present invention, the temperature measurement system includes an infrared temperature detection device electrically connected to the control system, a temperature measurement port is opened at the center of the top wall of the resonance cavity, and the infrared temperature detection device is installed on the temperature measurement port through a matching flange of the temperature measurement port.

[0015] According to a device for microwave-assisted chemical treatment of wood provided by the present invention, the furnace body comprises a support frame and a shell mounted on the support frame, the furnace door is detachably connected to one side of the support frame through a hinge, and the furnace door, the shell and the support frame together form a closed chamber; a cable outlet is provided on one side of the support frame;

[0016] The resonant cavity and the plurality of microwave power supplies are all mounted on the support frame and are located in the shell, and the microwave power supply is located below the resonant cavity; the control system is mounted on the shell and is located above the resonant cavity.

[0017] According to a microwave-assisted chemical treatment device for wood provided by the present invention, a furnace door closing dual detection system and a limit device are installed on the support frame, the detection end of the furnace door closing dual detection system faces the furnace door, and the furnace door closing dual detection system is electrically connected to the control system;

[0018] The limiting device is located at one side of the furnace door, a handle is installed on the furnace door, a metal block with a groove is installed on the support frame, and the metal block with a groove is detachably connected to the metal block on the handle;

[0019] The inner surface of the furnace door is sprayed with a polytetrafluoroethylene coating, and the edge of the furnace door is surrounded by a flexible rubber ring wrapped with a metal mesh, and the flexible rubber ring is tightly fitted with the resonance cavity.

[0020] According to a microwave-assisted chemical treatment device for wood provided by the present invention, the exhaust system comprises an exhaust pipe, an exhaust port is provided at the top of the resonance cavity, the exhaust pipe is installed at the exhaust port through an exhaust port matching flange, and the top of the exhaust port extends out of the housing;

[0021] The air intake system comprises an air intake pipe, an air intake port is provided at the bottom of the side wall of the resonance cavity, the air intake pipe is fixedly connected to and communicated with the air intake port, and one end of the air intake pipe extends out of the shell;

[0022] The drainage system includes a drainage pipe, a drainage port is provided at the bottom of the resonance cavity, one end of the drainage pipe is fixedly connected to and communicated with the drainage port, and the other end extends out of the shell; the outer wall of the drainage pipe is fixedly connected to the support frame.

[0023] According to a microwave-assisted chemical treatment device for wood provided by the present invention, a material container is installed on the storage tray, a chemical treatment liquid is contained in the material container, the wood is installed in the material container through a layering strip, and the wood is immersed in the chemical treatment liquid;

[0024] The material container is made of quartz material, the storage tray is made of polytetrafluoroethylene material, the resonance cavity is made of stainless steel material, and the inner surface of the resonance cavity is sprayed with polytetrafluoroethylene coating.

[0025] According to a device for microwave-assisted chemical treatment of wood provided by the present invention, the number of the microwave power supplies, the microwave generators and the waveguides are all twelve, six of the microwave generators and six of the waveguides are respectively installed on both sides of the outer wall of the resonance cavity, and the twelve microwave power supplies are respectively installed on the bottom wall of the furnace body.

[0026] According to a device for microwave-assisted chemical treatment of wood provided by the present invention, the waveguide is a rectangular waveguide, the microwave generator includes a magnetron and a heat dissipation fan, the magnetron and the heat dissipation fan are both installed on the outer wall of the resonant cavity, and the magnetron and the heat dissipation fan are both electrically connected to the control system.

[0027] According to a device for microwave-assisted chemical treatment of wood provided by the present invention, the control system includes a touch screen, an indicator light and a switch button assembly, the touch screen is embedded on the outer surface of the shell, the indicator light and the switch button assembly are both installed on the outer surface of the shell, the touch screen, the indicator light and the switch button assembly are all located above the resonant cavity; the touch screen has a built-in chip, the furnace door closing dual detection system, the infrared temperature detection equipment, the microwave power supply, the magnetron, the heat dissipation fan, the indicator light and the switch button assembly are all electrically connected to the touch screen.

[0028] The present invention discloses the following technical effects:

[0029] The present invention realizes the regulation of the microwave power of the microwave generating system through the control system, and has universal applicability in wood treatment in various situations; through the thermal effect of microwaves in the microwave generating system, the moisture in the wood is quickly brought to the boiling point, and steam is generated to open the blocked pores in the wood, which can be used for pretreatment to improve the permeability of the wood; the thermal effect and non-thermal effect of microwaves are fully utilized and applied to microwave-coordinated chemical treatment of wood, which shows obvious advantages in terms of speed and uniformity of wood treatment; the present invention has a simple structure and is easy to operate, and can improve the permeability of wood, the uniformity of treatment, and the stability of product quality;

[0030] When the present invention is used, wood with a certain moisture content to be processed is placed in the resonant cavity of the device, and the blocked pores of the wood can be opened after high-energy short-time microwave treatment; then the treated wood and the chemical reagent used for delignification are placed in a storage tray and processed at a lower microwave energy density, and the thermal effect of microwaves is used to heat the reaction system, and microwaves promote the attack of chemical reagents on the wood, thereby achieving the purpose of rapid processing and improving the rate and uniformity of wood processing; the wood is processed by high-power microwaves in coordination with chemical methods, which reduces the processing time of the wood and improves the uniformity of lignin removal, so as to realize the processing of large-scale wood;

[0031] The wood processing device of the present invention can be applied to wood processing fields such as wood chemical modification, wood blasting treatment, wood drying, wood heat treatment, wood microwave puffing treatment, wood bleaching, wood dyeing, wood softening, wood component refining and delignification. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a front cross-sectional view of the present invention;

[0034] Figure 2 is a side cross-sectional view of the present invention;

[0035] Figure 3 It is a top cross-sectional view of the present invention;

[0036] Figure 4 It is a structural schematic diagram of the material container in the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the microwave generator in the present invention;

[0038] Figure 6 Schematic diagram of the distribution of materials in the waveguide feed and the resonant cavity in the present invention;

[0039] Figure 7 The S parameter curve of each waveguide feed port in the present invention varies with frequency;

[0040] Figure 8 Simulation of the electric field distribution of the material cross section when the present invention is used to process two layers of material Figure Ⅰ ;

[0041] Fig. 9 Simulation of the electric field distribution of the material cross section when the present invention is used to process two layers of material Figure II .

[0042] Among them, 1. exhaust duct; 2. indicator light; 3. switch button assembly; 4. shell; 5. material container; 6. furnace door closing double detection system; 7. microwave power supply; 8. drainage duct; 9. air intake duct; 10. storage tray; 11. touch screen; 12. support frame; 13. exhaust port; 14. infrared temperature detection equipment; 15. temperature measuring port; 16. microwave generator; 17. air intake; 18. drainage port; 19. exhaust port supporting flange; 20. temperature measuring port supporting flange; 21. resonant cavity; 22. handle; 23. grooved metal block; 24. furnace door; 25. limit device; 26. cable outlet; 27. wood; 28. pressure strip; 161. magnetron; 162. cooling fan. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Reference Figure 1-Figure 9 The present invention provides a device for microwave-assisted chemical treatment of wood, comprising:

[0046] A furnace body, one side of which is provided with a furnace door 24 that can be opened and closed;

[0047] The resonant cavity 21 is installed in the furnace body, the top of the resonant cavity 21 is installed with an exhaust system and a temperature measurement system, and the bottom is installed with an air intake system and a liquid discharge system;

[0048] A plurality of storage trays 10, wherein the plurality of storage trays 10 are detachably connected to the resonant cavity 21, and the storage trays 10 are used to place wood 27 and allow the wood 27 to be immersed in the chemical treatment liquid;

[0049] A microwave generating system, the output end of which is mounted on the outer wall of the resonant cavity 21;

[0050] Control system: the control system is installed on the furnace body, and the microwave generation system and the temperature measurement system are electrically connected to the control system;

[0051] With such arrangement, the present invention realizes the adjustment of the microwave power of the microwave generating system through the control system, and has universal applicability in the treatment of wood 27 in various situations; through the thermal effect of microwaves in the microwave generating system, the moisture in the wood 27 is quickly brought to the boiling point, and steam is generated to open the blocked pores in the wood 27, which can be used for the pretreatment of improving the permeability of the wood 27; the thermal effect and non-thermal effect of microwaves are fully utilized and applied to the microwave synergistic chemical treatment of the wood 27, which shows obvious advantages in the speed and uniformity of the treatment of the wood 27; the present invention has a simple structure and is easy to operate, and can improve the permeability of the wood and the uniformity of the treatment, as well as the stability of the product quality;

[0052] When the present invention is used, the wood 27 with a certain moisture content to be processed is placed in the resonant cavity 21 of the device. After high-energy and short-time microwave treatment, the blocked pores of the wood 27 can be opened; then the treated wood 27 is placed in the storage tray 10 together with the chemical reagent used for delignification, and processed at a lower microwave energy density, using the thermal effect of microwaves to heat the reaction system, and at the same time, microwaves promote the attack of chemical reagents on the wood 27, thereby achieving the purpose of rapid processing and improving the rate and uniformity of the processing of the wood 27; the wood 27 is processed by high-power microwaves in coordination with chemical methods, which reduces the processing time of the wood 27 and improves the uniformity of lignin removal, so as to realize the processing of large-scale wood.

[0053] The S parameter can be used to measure the proportion of reflected energy received by each microwave feed to the incident energy; the microwave frequency used in the present invention is 2450MHz, the S parameter of each feed is less than -8dB near the center frequency, and the S parameter of most feeds is less than -10dB near the center frequency, indicating that the present invention has high microwave efficiency; the simulation results of using the present invention to process two layers of wood materials show that the microwave field in the material area is concentrated at multiple points, the material is heated from the inside to the outside, and the heating uniformity is improved.

[0054] According to a further optimization scheme, the microwave generating system includes a plurality of microwave generators 16 and a plurality of microwave power supplies 7, wherein the plurality of microwave power supplies 7 are arranged in a one-to-one correspondence with the plurality of microwave generators 16; the microwave generators 16 and the microwave power supplies 7 are both electrically connected to the control system;

[0055] A plurality of microwave generators 16 are respectively installed on both sides of the outer wall of the resonance cavity 21, and a waveguide is installed between the microwave generator 16 and the outer wall of the resonance cavity 21; a plurality of microwave power supplies 7 are installed on the bottom wall of the furnace body.

[0056] According to a further optimization scheme, the temperature measurement system includes an infrared temperature detection device 14 electrically connected to the control system. A temperature measurement port 15 is provided at the center of the top wall of the resonance cavity 21 . The infrared temperature detection device 14 is installed on the temperature measurement port 15 through a matching flange 20 of the temperature measurement port.

[0057] According to a further optimized solution, the furnace body includes a support frame 12 and a shell 4 mounted on the support frame 12, and a furnace door 24 is detachably connected to one side of the support frame 12 through a hinge, and the furnace door 24, the shell 4 and the support frame 12 together form a closed chamber; a cable outlet 26 is provided at a corner of one side of the support frame 12;

[0058] The resonant cavity 21 and a plurality of microwave power supplies 7 are all mounted on the support frame 12 and are all located in the housing 4. The microwave power supply 7 is located below the resonant cavity 21. The control system is mounted on the housing 4 and is located above the resonant cavity 21.

[0059] The microwave power source 7 is connected to the support frame 12 by bolts; a plurality of microwave power sources 7 provide energy to a plurality of microwave generators 16 in a one-to-one correspondence;

[0060] In this embodiment, the support frame 12 is made of 304 stainless steel; the shell 4 includes a common shell and an inspection belly plate, both of which are made of 304 stainless steel and connected to the support frame 12; the above-mentioned inspection belly plate is located at the rear of the device and can be removed from the device for inspection and maintenance of the device.

[0061] Further optimizing the scheme, the furnace door closing dual detection system 6 and the limit device 25 are installed on the support frame 12, the detection end of the furnace door closing dual detection system 6 faces the furnace door 24, and the furnace door closing dual detection system 6 is electrically connected to the control system;

[0062] The limit device 25 is used to prevent the furnace door 24 from opening at too large an angle and causing damage;

[0063] The oven door closing dual detection system 6 will cause the microwave power supply 7 to no longer work normally if the oven door 24 is not closed or not completely closed, thereby ensuring the safety of personnel;

[0064] The limiting device 25 is located at one side of the furnace door 24. The furnace door 24 is provided with a handle 22. A grooved metal block 23 is provided on the support frame 12. The grooved metal block 23 is detachably connected to the metal block on the handle 22.

[0065] When the furnace door 24 is in a closed state, the metal block on the handle 22 is tightly stuck in the groove to ensure that the furnace door 24 will not be opened midway;

[0066] The inner surface of the furnace door 24 is sprayed with a polytetrafluoroethylene coating, and the edge of the furnace door 24 is surrounded by a flexible rubber ring wrapped with a metal mesh. The flexible rubber ring fits tightly with the resonance cavity 21 when the furnace door 24 is closed to ensure absolute sealing of microwave radiation during operation.

[0067] According to a further optimized solution, the exhaust system includes an exhaust pipe 1, an exhaust port 13 is provided at the top of the resonance cavity 21, the exhaust pipe 1 is installed at the exhaust port 13 through an exhaust port matching flange 19, and the top of the exhaust port 13 extends out of the housing 4;

[0068] The outer diameter of the exhaust pipe 1 is 110 mm, and an external fan can be connected to discharge the exhaust gas generated in the resonance cavity 21; the small aperture of the exhaust port flange 19 allows the exhaust gas to pass through while ensuring that the microwave radiation will not leak, thereby ensuring the safety of the operator;

[0069] The air intake system includes an air intake pipe 9. An air intake port 17 is provided at the bottom of the side wall of the resonance cavity 21. The air intake pipe 9 is fixedly connected to and communicates with the air intake port 17. One end of the air intake pipe 9 extends out of the housing 4.

[0070] The inner diameter of the air inlet pipe 9 is 20 mm. When strict requirements are met, protective gas such as nitrogen can be delivered to the resonance cavity 21 through a gas cylinder;

[0071] The drainage system includes a drainage pipe 8. A drainage port 18 is provided at the bottom of the resonance cavity 21. One end of the drainage pipe 8 is fixedly connected to and communicates with the drainage port 18, and the other end extends out of the housing 4. The outer wall of the drainage pipe 8 is fixedly connected to the support frame 12.

[0072] The inner diameter of the drainage pipe 8 is 20 mm, and the two ends are respectively connected to the drainage port 18 at the bottom of the resonance cavity 21 and the external environment. The middle part of the drainage pipe 8 is suspended by the extension part of the support frame 12 to prevent the drainage pipe 8 from falling off due to excessive gravity when there is too much liquid in the drainage pipe 8;

[0073] The bottom of the resonance cavity 21 is inclined, and the drain port 18 is located at the lowest point of the inclination.

[0074] According to a further optimized solution, a material container 5 is installed on the storage tray 10, a chemical treatment liquid is contained in the material container 5, and the wood 27 is installed in the material container 5 through a layering strip 28, and the wood 27 is immersed in the chemical treatment liquid;

[0075] The weight of the storage tray 10 is 20 kg;

[0076] The wood 27 is pressed by a layer 28 and immersed in the chemical treatment liquid. The layer 28 is made of polytetrafluoroethylene and does not respond to microwave radiation. The above reaction system is contained in a material container 5 made of quartz material and placed on a storage tray 10.

[0077] The material container 5 is made of quartz, the storage tray 10 is made of polytetrafluoroethylene, the resonance cavity 21 is made of 304 stainless steel, and the inner surface of the resonance cavity 21 is sprayed with a polytetrafluoroethylene coating to prevent the corrosive exhaust gas from corroding the inner surface of the resonance cavity 21.

[0078] According to a further optimization scheme, the number of microwave power supplies 7, microwave generators 16 and waveguides is twelve, six microwave generators 16 and six waveguides are respectively installed on both sides of the outer wall of the resonant cavity 21, and the twelve microwave power supplies 7 are respectively installed on the bottom wall of the furnace body;

[0079] Six microwave generators 16 are arranged in three layers and connected to the support frame 12 by bolts.

[0080] Further optimized solution, the waveguide is a rectangular waveguide, the microwave generator 16 includes a magnetron 161 and a heat dissipation fan 162, the magnetron 161 and the heat dissipation fan 162 are both installed on the outer wall of the resonant cavity 21, and the magnetron 161 and the heat dissipation fan 162 are both electrically connected to the control system;

[0081] The microwave energy is fed into the resonant cavity 21 through a rectangular waveguide, thereby acting on the wood processing system; the connection holes between the waveguide and the shell of the resonant cavity 21 are evenly distributed on the two sides of the resonant cavity 21; the corresponding twelve microwave generators 16 are divided into 4 groups, 3 in each group, and the positions of each group are as follows: Figure 6 As shown; Figure 6 The direction of the middle arrow is the opening direction of the furnace door 24;

[0082] Each group of microwave generators 16 can be turned on individually, and the power is continuously adjustable from 600W to 3000W, which can be set by the touch screen 11; multiple groups can also be turned on at the same time, and the maximum available power is 12kW.

[0083] Further optimizing the scheme, the control system includes a touch screen 11, an indicator light 2 and a switch button assembly 3, the touch screen 11 is embedded on the outer surface of the housing 4, the indicator light 2 and the switch button assembly 3 are both mounted on the outer surface of the housing 4, and the touch screen 11, the indicator light 2 and the switch button assembly 3 are all located above the resonant cavity 21;

[0084] The switch button assembly 3 includes a power switch and an emergency stop button;

[0085] The touch screen 11 has a built-in chip that can set and adjust conditions such as microwave power, processing time, material temperature, etc.

[0086] When the power switch is pressed and the device is in standby mode, the power indicator light on the right side of the indicator light 2 lights up; when the microwave is started to process wood, the microwave indicator light 2 on the left side lights up; and in an emergency, when the emergency stop button is pressed, the entire device is powered off, and both indicator lights 2 go out;

[0087] The oven door closing dual detection system 6 , the infrared temperature detection device 14 , the microwave power supply 7 , the magnetron 161 , the cooling fan 162 , the indicator light 2 and the switch button assembly 3 are all electrically connected to the touch screen 11 .

[0088] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0089] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the embodiments of the present invention. For ordinary technical users in the relevant field, other different forms of changes or modifications can be made on the basis of the above description, such as using the present invention in wood chemical modification, wood blasting treatment, wood drying, wood heat treatment, wood microwave puffing treatment, wood bleaching, wood dyeing, wood softening, wood component refining and delignification and other wood processing fields. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A device for microwave-assisted chemical treatment of wood, characterized in that: include: A furnace body, one side of which is provided with an openable and closable furnace door (24); A resonant cavity (21), wherein the resonant cavity (21) is installed in the furnace body, an exhaust system and a temperature measurement system are installed on the top of the resonant cavity (21), and an air intake system and a liquid discharge system are installed on the bottom; A plurality of storage trays (10), wherein the plurality of storage trays (10) are detachably connected to the resonant cavity (21), and the storage trays (10) are used to place wood (27) and allow the wood (27) to be immersed in a chemical treatment liquid; A microwave generating system, wherein an output end of the microwave generating system is mounted on an outer wall of the resonant cavity (21); A control system is installed on the furnace body, and the microwave generating system and the temperature measuring system are both electrically connected to the control system.

2. The device for microwave-assisted chemical treatment of wood according to claim 1, characterized in that: The microwave generating system comprises a plurality of microwave generators (16) and a plurality of microwave power supplies (7), wherein the plurality of microwave power supplies (7) are arranged in a one-to-one correspondence with the plurality of microwave generators (16); the microwave generators (16) and the microwave power supplies (7) are both electrically connected to the control system; The plurality of microwave generators (16) are respectively installed on both sides of the outer wall of the resonance cavity (21), and a waveguide is installed between the microwave generator (16) and the outer wall of the resonance cavity (21); and the plurality of microwave power supplies (7) are installed on the bottom wall of the furnace body.

3. The device for microwave-assisted chemical treatment of wood according to claim 2, characterized in that: The temperature measurement system comprises an infrared temperature detection device (14) electrically connected to the control system. A temperature measurement port (15) is provided at the center of the top wall of the resonance cavity (21). The infrared temperature detection device (14) is installed on the temperature measurement port (15) via a temperature measurement port matching flange (20).

4. The device for microwave-assisted chemical treatment of wood according to claim 3, characterized in that: The furnace body comprises a support frame (12) and a shell (4) mounted on the support frame (12); the furnace door (24) is detachably connected to one side of the support frame (12) via a hinge; the furnace door (24), the shell (4) and the support frame (12) together form a closed chamber; a cable outlet (26) is provided on one side of the support frame (12); The resonant cavity (21) and the plurality of microwave power supplies (7) are all mounted on the support frame (12) and are all located in the housing (4); the microwave power supplies (7) are located below the resonant cavity (21); and the control system is mounted on the housing (4) and is located above the resonant cavity (21).

5. The device for microwave-assisted chemical treatment of wood according to claim 4, characterized in that: The support frame (12) is provided with a furnace door closing dual detection system (6) and a limit device (25), the detection end of the furnace door closing dual detection system (6) is directed toward the furnace door (24), and the furnace door closing dual detection system (6) is electrically connected to the control system; The limiting device (25) is located on one side of the furnace door (24); a handle (22) is installed on the furnace door (24); a grooved metal block (23) is installed on the support frame (12); the grooved metal block (23) is detachably connected to the metal block on the handle (22); The inner surface of the furnace door (24) is sprayed with a polytetrafluoroethylene coating, and the edge of the furnace door (24) is surrounded by a flexible rubber ring wrapped with a metal mesh, and the flexible rubber ring is tightly fitted with the resonance cavity (21).

6. The device for microwave-assisted chemical treatment of wood according to claim 4, characterized in that: The exhaust system comprises an exhaust pipe (1), an exhaust port (13) is provided at the top of the resonance cavity (21), the exhaust pipe (1) is installed at the exhaust port (13) via an exhaust port matching flange (19), and the top of the exhaust port (13) extends out of the housing (4); The air intake system comprises an air intake pipe (9), an air intake port (17) is provided at the bottom of the side wall of the resonance cavity (21), the air intake pipe (9) is fixedly connected to and communicates with the air intake port (17), and one end of the air intake pipe (9) extends out of the housing (4); The drainage system comprises a drainage pipe (8), a drainage port (18) is provided at the bottom of the resonance cavity (21), one end of the drainage pipe (8) is fixedly connected to and communicates with the drainage port (18), and the other end extends out of the shell (4); the outer wall of the drainage pipe (8) is fixedly connected to the support frame (12).

7. The device for microwave-assisted chemical treatment of wood according to claim 1, characterized in that: A material container (5) is installed on the storage tray (10), a chemical treatment liquid is contained in the material container (5), the wood (27) is installed in the material container (5) via a layering strip (28), and the wood (27) is immersed in the chemical treatment liquid; The material container (5) is made of quartz material, the storage tray (10) is made of polytetrafluoroethylene material, the resonance cavity (21) is made of stainless steel material, and the inner surface of the resonance cavity (21) is sprayed with a polytetrafluoroethylene coating.

8. The device for microwave-assisted chemical treatment of wood according to claim 5, characterized in that: The number of the microwave power supplies (7), the microwave generators (16) and the waveguides is twelve; six microwave generators (16) and six waveguides are respectively installed on both sides of the outer wall of the resonance cavity (21); and the twelve microwave power supplies (7) are respectively installed on the bottom wall of the furnace body.

9. The device for microwave-assisted chemical treatment of wood according to claim 8, characterized in that: The waveguide is a rectangular waveguide, the microwave generator (16) comprises a magnetron (161) and a heat dissipation fan (162), the magnetron (161) and the heat dissipation fan (162) are both mounted on the outer wall of the resonant cavity (21), and the magnetron (161) and the heat dissipation fan (162) are both electrically connected to the control system.

10. The device for microwave-assisted chemical treatment of wood according to claim 9, characterized in that: The control system comprises a touch screen (11), an indicator light (2) and a switch button assembly (3); the touch screen (11) is embedded on the outer surface of the housing (4); the indicator light (2) and the switch button assembly (3) are both mounted on the outer surface of the housing (4); the touch screen (11), the indicator light (2) and the switch button assembly (3) are all located above the resonant cavity (21); the touch screen (11) has a built-in chip; the furnace door closing dual detection system (6), the infrared temperature detection device (14), the microwave power supply (7), the magnetron (161), the heat dissipation fan (162), the indicator light (2) and the switch button assembly (3) are all electrically connected to the touch screen (11).

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