A heat treatment device for wood modification

Abstract

The present application relates to wood production and processing technology field, specifically to a kind of wood modification heat treatment device, including heat treatment box, feed inlet and sealing door, the side of heat treatment box is equipped with feed inlet, sealing door is installed on feed inlet: by the upper and lower two mesh screens and each mesh screen is placed with several layers of activated carbon, waste gas generated after heat treatment can be adsorbed and filtered to wood, in turn effectively avoid waste gas direct discharge in air and cause pollution to air;By the ingenious cooperation design of elastic component, extruding rod, drive shaft, driving mechanism, eccentric wheel, eccentric shaft, driving rod, slot, sector tooth and gear tooth, the upper and lower two mesh screens can be reciprocatingly moved up and down, in turn the activated carbon on mesh screen moves, so that it can be in full contact with waste gas, increase the opportunity of adsorption;The activated carbon that moves simultaneously can constantly update adsorption surface, avoid local saturation, so as to make full use of its adsorption capacity.

Description

Technical Field

[0001] This invention belongs to the field of wood production and processing technology, and specifically relates to a heat treatment device for wood modification. Background Technology

[0002] Wood modification is a crucial part of wood production and processing. It mostly involves enhancing the original properties of wood through heat treatment. This is a physical or chemical processing method that improves or alters the physical, mechanical, chemical properties, and structural characteristics of wood. Its purpose is to enhance the natural corrosion resistance, acid resistance, alkali resistance, flame retardancy, wear resistance, color stability, mechanical strength, and dimensional stability of wood. Wood that has undergone modification treatment is called modified wood or improved wood.

[0003] However, the heat treatment of wood generates a large amount of waste gas, which often contains various harmful substances. If this waste gas is released directly into the air without effective treatment, it will not only cause serious pollution to the atmospheric environment but also endanger human health. Currently, to reduce atmospheric pollution, activated carbon is mostly used for waste gas adsorption. However, most existing activated carbon systems are fixed in place, and the surface of the activated carbon near the waste gas inlet quickly reaches saturation, while the adsorption capacity of activated carbon in other areas is not fully utilized, resulting in a waste of activated carbon adsorption capacity. Therefore, overcoming the aforementioned technical problems and defects has become a key issue that needs to be addressed. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem that wood heat treatment processes generate a large amount of waste gas, which often contains various harmful substances. If these waste gases are directly discharged into the air without effective treatment, they will not only cause serious pollution to the atmospheric environment but also harm human health. Currently, in order to reduce pollution to the atmospheric environment, people mostly use activated carbon to adsorb and treat waste gases. However, most existing activated carbon is fixedly installed, and the surface of activated carbon near the waste gas inlet will quickly reach saturation, while the adsorption capacity of activated carbon in other areas has not been fully utilized, resulting in a waste of activated carbon adsorption capacity. Therefore, this invention provides a heat treatment device for wood modification.

[0005] To achieve the above-mentioned objectives, the technical solution of this invention is: a heat treatment device for wood modification, comprising a heat treatment chamber, a feed inlet, and a sealing door. The heat treatment chamber has a feed inlet on one side, and a sealing door is installed on the feed inlet. The device is characterized in that: an exhaust pipe is fixedly connected to the heat treatment chamber, and a filter shell is fixedly connected to the exhaust pipe. Inside the filter shell, two perforated plates are mounted vertically and vertically via several elastic components. Several layers of activated carbon are placed on each perforated plate. An installation frame is fixedly connected inside the installation shell, and a sliding connection is made vertically to the installation frame. An extrusion rod is used to extrude the upper and lower perforated plates. A drive shaft is rotatably mounted on the end of the mounting frame away from the extrusion rod. A drive mechanism that can rotate the drive shaft is mounted on the filter shell. An eccentric wheel is fixedly mounted on the end of the drive shaft away from the drive mechanism. An eccentric shaft is fixedly mounted on the eccentric wheel. A drive rod is rotatably mounted on the mounting frame. The drive rod has a slot for the eccentric shaft to move. A sector tooth is fixedly connected to the end of the drive rod away from the slot. Teeth that can mesh with the sector tooth are evenly spaced and fixedly mounted in the middle of the extrusion rod.

[0006] In the aforementioned heat treatment device for wood modification, the elastic component includes an installation cylinder, a sliding rod, and a strong spring. The installation cylinder is fixedly installed inside the heat treatment chamber. The sliding rod is slidably connected up and down inside the installation cylinder. The upper end of the sliding rod is fixedly connected to the perforated plate. A strong spring is fixedly installed at the lower end inside the installation cylinder. The upper end of the strong spring is fixedly connected to the lower end of the sliding rod.

[0007] In the aforementioned heat treatment device for wood modification, the elastic component further includes a limiting port and a limiting plate. The upper and middle ends of both sides of the mounting cylinder are symmetrically provided with limiting ports. The lower ends of the sliding rod are fixedly connected with limiting plates that are adapted to the limiting ports, and the limiting plates can slide up and down within the limiting ports.

[0008] In the aforementioned heat treatment device for wood modification, the activated carbon on the mesh plate at the lower part of the filter shell is granular activated carbon, and the activated carbon on the mesh plate at the upper part of the filter shell is block activated carbon.

[0009] In the aforementioned heat treatment device for wood modification, the driving mechanism includes a drive frame, a drive motor, a worm gear, a rotating shaft, a worm wheel, a driving bevel gear, and a driven bevel gear. The drive frame is fixedly installed on the outer wall of the filter shell. The drive motor is fixedly installed on the drive frame. The worm gear is fixedly installed on the output shaft of the drive motor. The rotating shaft is rotatably installed on the drive frame. The worm wheel, which meshes with the worm gear, is fixedly installed on the rotating shaft. The driving bevel gear, which meshes with the driving bevel gear, is fixedly installed on the drive shaft.

[0010] In the aforementioned heat treatment apparatus for wood modification, the diameter of the driven bevel gear is larger than the diameter of the driving bevel gear.

[0011] In the aforementioned heat treatment device for wood modification, a stirring mechanism for stirring exhaust gas is installed on the lower inner side of the filter shell. The stirring mechanism includes a stirring motor, a stirring shaft, stirring rods, and stirring blades. The stirring motor is fixedly installed on the outer wall of the filter shell. The output shaft of the stirring motor passes through the filter shell and is fixedly connected to the stirring shaft. Several stirring rods are fixedly connected at even intervals along the circumferential direction on the stirring shaft. Stirring blades for stirring exhaust gas are fixedly connected to the stirring rods on the same straight line.

[0012] In the aforementioned heat treatment apparatus for wood modification, the stirring blade is L-shaped.

[0013] Compared with the prior art, the heat treatment apparatus for wood modification of the present invention has at least the following beneficial effects: 1. A heat treatment device for wood modification according to the present invention, wherein several layers of activated carbon are placed on the upper and lower perforated plates, and the waste gas generated after heat treatment of wood can be adsorbed and filtered, thereby effectively avoiding the direct emission of waste gas into the air and causing air pollution; through the ingenious design of elastic components, extrusion rods, drive shafts, drive mechanisms, eccentric wheels, eccentric shafts, drive rods, slots, fan-shaped teeth and teeth, the upper and lower perforated plates can move back and forth, thereby moving the activated carbon on the perforated plates, so as to fully contact the waste gas and increase the adsorption opportunity; this dynamic adsorption method is more effective than the static adsorption of fixed activated carbon plates, and can reduce the concentration of pollutants in the waste gas more quickly; at the same time, the moving activated carbon can continuously renew the adsorption surface, avoid local saturation, and thus make full use of its adsorption capacity.

[0014] 2. The heat treatment device for wood modification of the present invention, through the coordinated design of the stirring mechanism, can stir the waste gas, change the flow path of the waste gas, and disperse the waste gas. After the waste gas is dispersed, the contact opportunity with the surface of activated carbon is greatly increased, and it can be adsorbed by activated carbon more quickly. Moreover, it can prolong the flow time of the waste gas in the filter shell, allowing the waste gas to have more opportunities to contact the microporous surface of activated carbon, so that more waste gas is captured by activated carbon, thereby increasing the adsorption capacity of activated carbon for waste gas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a heat treatment apparatus for wood modification according to the present invention; Figure 2 This is a side view of a heat treatment apparatus for wood modification according to the present invention. Figure 3 yes Figure 2 Enlarged view of section A in the image; Figure 4 This is a schematic diagram of the internal structure of the filter shell of a heat treatment device for wood modification according to the present invention; Figure 5 This is a partial structural diagram of the reciprocating motion of a heat treatment device for wood modification according to the present invention. Figure 6 This is a schematic diagram of the structure of an elastic component of a heat treatment apparatus for wood modification according to the present invention.

[0016] In the diagram: 1. Heat treatment chamber; 101. Feed inlet; 102. Sealing door; 2. Exhaust pipe; 3. Filter shell; 4. Stirring mechanism; 401. Stirring motor; 402. Stirring shaft; 403. Stirring rod; 404. Stirring blade; 5. Drive shaft; 6. Drive mechanism; 601. Drive motor; 602. Drive frame; 603. Worm gear; 604. Rotating shaft; 605. Worm wheel; 606. Driving bevel gear; 607. Driven bevel gear; 7. Elastic component; 701. Mounting cylinder; 702. Sliding rod; 703. Strong spring; 704. Limiting port; 705. Limiting plate; 8. Mesh plate; 9. Mounting frame; 10. Extrusion rod; 1001. Tooth; 11. Eccentric wheel; 1101. Eccentric shaft; 12. Drive rod; 1201. Groove; 13. Sector tooth. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed description of a heat treatment apparatus for wood modification according to the present invention.

[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0019] This embodiment discloses a heat treatment device for wood modification. By placing several layers of activated carbon on two perforated plates 8, both upper and lower, the waste gas generated after heat treatment of the wood can be adsorbed and filtered, effectively preventing the waste gas from being directly emitted into the air and causing air pollution. (Refer to...) Figures 1-6It mainly includes a heat treatment chamber 1, a feed inlet 101, and a sealing door 102. The heat treatment chamber 1 has a feed inlet 101 on one side, and a sealing door 102 is installed on the feed inlet 101. An exhaust pipe 2 is fixedly connected to the heat treatment chamber 1, and a filter shell 3 is fixedly connected to the exhaust pipe 2. Two perforated plates 8 are installed inside the filter shell 3 via several elastic components. Several layers of activated carbon are placed on each perforated plate 8. A mounting frame 9 is fixedly connected inside the mounting shell, and a pressing rod 10 is slidably connected to the mounting frame 9 to press the two perforated plates 8. A drive shaft 5 is rotatably mounted on the end of the filter housing 3 away from the extrusion rod 10. A drive mechanism 6 that can rotate the drive shaft 5 is mounted on the filter housing 3. An eccentric wheel 11 is fixedly mounted on the end of the drive shaft 5 away from the drive mechanism 6. An eccentric shaft 1101 is fixedly mounted on the eccentric wheel 11. A drive rod 12 is rotatably mounted on the mounting frame 9. A slot 1201 is provided on the drive rod 12 for the eccentric shaft 1101 to move. A sector tooth 13 is fixedly connected to the end of the drive rod 12 away from the slot 1201. Teeth 1001 that can mesh with the sector teeth 13 are fixedly mounted evenly at intervals in the middle of the extrusion rod 10. Through the ingenious design of the elastic component, the extrusion rod 10, the drive shaft 5, the drive mechanism 6, the eccentric wheel 11, the eccentric shaft 1101, the drive rod 12, the slot 1201, the fan-shaped teeth 13, and the teeth 1001, the upper and lower perforated plates 8 can move back and forth, thereby moving the activated carbon on the perforated plates 8, so that it can fully contact the waste gas and increase the adsorption opportunities. This dynamic adsorption method is more effective than the static adsorption of fixed activated carbon plates and can reduce the concentration of pollutants in the waste gas more quickly. At the same time, the moving activated carbon can continuously renew the adsorption surface, avoid local saturation, and thus make full use of its adsorption capacity.

[0020] In this embodiment, refer to Figure 4 and Figure 6 The elastic component includes a mounting cylinder 701, a sliding rod 702, and a strong spring 703. The mounting cylinder 701 is fixedly installed inside the heat treatment chamber 1. The sliding rod 702 is slidably connected up and down inside the mounting cylinder 701. The upper end of the sliding rod 702 is fixedly connected to the perforated plate 8. The strong spring 703 is fixedly installed at the lower end inside the mounting cylinder 701. The upper end of the strong spring 703 is fixedly connected to the lower end of the sliding rod 702. In practical use, when the extrusion rod 10 moves up and down, it can extrude the perforated plate 8, which in turn causes the strong spring 703 to deform. When the extrusion rod 10 does not extrude the perforated plate 8 during its up and down movement, the strong spring 703 returns to its original position. These two actions work together to make the perforated plate 8 move up and down, which in turn causes the activated carbon on the perforated plate 8 to move up and down, thereby enabling it to fully contact the exhaust gas and increase the adsorption opportunities.

[0021] In this embodiment, refer to Figure 4 and Figure 6 The elastic component further includes a limiting port 704 and a limiting plate 705. The upper and middle ends of both sides of the mounting cylinder 701 are symmetrically provided with limiting ports 704. The lower ends of the sliding rod 702 are fixedly connected with limiting plates 705 that are adapted to the limiting ports 704, and the limiting plates 705 can slide up and down within the limiting ports 704. Through the cooperative design of the limiting ports 704 and the limiting plates 705, the sliding rod 702 can be limited, thereby effectively preventing the sliding rod 702 from sliding out of the mounting cylinder 701.

[0022] In this embodiment, the activated carbon on the perforated plate 8 at the lower part of the filter shell 3 is granular activated carbon (not shown in the figure), and the activated carbon on the perforated plate 8 at the upper part of the filter shell 3 is block activated carbon (not shown in the figure). Granular activated carbon has a large specific surface area and abundant microporous structure, which can quickly capture waste gas. When granular activated carbon is placed at the lower part of the filter shell 3, the flow rate of waste gas is large when it first enters, and the granular activated carbon can quickly perform preliminary adsorption on the waste gas, reduce the concentration in the waste gas, and reduce the adsorption burden on the upper activated carbon. Block activated carbon usually has a larger pore structure and stronger adsorption capacity. After the waste gas has been pre-treated by the lower granular activated carbon, the concentration has been reduced. At this time, the upper block activated carbon can perform deep adsorption on the waste gas, further remove the residual waste gas, and ensure that the emitted waste gas meets a higher purification standard.

[0023] In this embodiment, refer to Figure 2 , Figure 3 and Figure 5 The drive mechanism 6 includes a drive frame 602, a drive motor 601, a worm gear 603, a rotating shaft 604, a worm wheel 605, a driving bevel gear 606, and a driven bevel gear 607. The drive frame 602 is fixedly installed on the outer wall of the filter shell 3. The drive motor 601 is fixedly installed on the drive frame 602. The worm gear 603 is fixedly installed on the output shaft of the drive motor 601. The rotating shaft 604 is rotatably installed on the drive frame 602. The worm wheel 605, which meshes with the worm gear 603, is fixedly installed on the rotating shaft 604. The driving bevel gear 606 is fixedly installed on the rotating shaft 604. The driven bevel gear 607, which meshes with the driving bevel gear 606, is fixedly installed on the drive shaft 604. In practical use, the drive motor 601 is started, which drives the worm 603 to rotate. The worm 603 meshes with the worm wheel 605, causing the worm wheel 605 to rotate. The worm wheel 605 drives the rotating shaft 604 to rotate. The rotating shaft 604 drives the driving bevel gear 606 to rotate. The driving bevel gear 606 meshes with the driven bevel gear 607, causing the driven bevel gear 607 to rotate. The driven bevel gear 607 drives the drive shaft 5 to rotate.

[0024] In this embodiment, refer to Figure 2 and Figure 3 The driven bevel gear 607 has a larger diameter than the driving bevel gear 606, which allows it to decelerate and thus makes the drive shaft 5 rotate more smoothly.

[0025] In this embodiment, refer to Figure 1 and Figure 4 The filter shell 3 has an internal lower side equipped with a stirring mechanism 4 for stirring the exhaust gas. The stirring mechanism 4 includes a stirring motor 401, a stirring shaft 402, stirring rods 403, and stirring blades 404. The stirring motor 401 is fixedly installed on the outer wall of the filter shell 3. The output shaft of the stirring motor 401 passes through the filter shell 3 and is fixedly connected to the stirring shaft 402. Several stirring rods 403 are fixedly connected at even intervals along the circumferential direction on the stirring shaft 402. Stirring blades 404 for stirring the exhaust gas are fixedly connected to the stirring rods 403 on the same straight line. In practical use, the stirring motor 401 is started, which drives the stirring rod 403 to rotate. The stirring rod 403 drives the stirring blade 404 to rotate, and the stirring blade 404 stirs the exhaust gas, changes the flow path of the exhaust gas, and disperses the exhaust gas.

[0026] In this embodiment, refer to Figure 4 The stirring blade 404 is L-shaped, with the vertical and horizontal sections of the L-shaped stirring blade 404 forming a 90° angle. When rotating, it generates both axial and radial flow, which can improve the stirring effect on the exhaust gas.

[0027] The working principle of a heat treatment device for wood modification according to the present invention is as follows: When wood needs to be modified by heat treatment, the sealing door 102 is opened and the wood is put into the heat treatment box 1 through the feed port 101. During the heat treatment of wood in the heat treatment box 1, a large amount of waste gas is generated. The waste gas is discharged from the exhaust pipe 2 and then enters the filter shell 3. At this time, the stirring motor 401 is started. The stirring motor 401 drives the stirring shaft 402 to rotate. The stirring shaft 402 drives the stirring rod 403 to rotate. The stirring rod 403 drives the stirring blade 404 to rotate, thereby stirring the waste gas and dispersing it. Then, the exhaust gas is adsorbed by the granular and block activated carbon on the perforated plate 8 and discharged from the top of the filter shell 3. During the process of the exhaust gas passing through the granular and block activated carbon on the perforated plate 8, the drive motor 601 is activated. The drive motor 601 drives the worm gear 603 to rotate. The worm gear 603 meshes with the worm wheel 605, causing the worm wheel 605 to rotate. The worm wheel 605 drives the rotating shaft 604 to rotate. The rotating shaft 604 drives the driving bevel gear 606 to rotate. The driving bevel gear 606 meshes with the driven bevel gear 607, causing the driven bevel gear 607 to rotate. Gear 607 drives drive shaft 5 to rotate, drive shaft 5 drives eccentric wheel 11 to rotate. During one rotation of eccentric wheel 11, the fan-shaped teeth 13 reciprocate through the cooperative design of eccentric shaft 1101, drive rod 12 and slot 1201, which in turn mesh with teeth 1001 to make extrusion rod 10 move up and down. This causes extrusion rod 10 to reciprocate to extrude the upper and lower perforated plates 8. Through the cooperation of elastic component 7, the perforated plates 8 move up and down, causing the activated carbon on the perforated plates 8 to move, thereby enabling it to fully contact the exhaust gas and increase the adsorption opportunities.

[0028] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of the invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0029] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense as would be understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation of quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0030] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention.

Claims

1. A heat treatment apparatus for wood modification, comprising a heat treatment chamber, a feed inlet, and a sealing door, wherein the feed inlet is provided on one side of the heat treatment chamber, and a sealing door is installed on the feed inlet, characterized in that: An exhaust pipe is fixedly connected to the heat treatment box, and a filter shell is fixedly connected to the exhaust pipe. Inside the filter shell, two perforated plates are installed vertically through several elastic components, and several layers of activated carbon are placed on each of the perforated plates. An installation frame is fixedly connected inside the mounting shell. An extrusion rod is slidably connected to the installation frame for extruding the upper and lower perforated plates. A drive shaft is rotatably mounted on the end of the installation frame away from the extrusion rod. A drive mechanism that can rotate the drive shaft is installed on the filter shell. An eccentric wheel is fixedly mounted on the end of the drive shaft away from the drive mechanism. An eccentric shaft is fixedly mounted on the eccentric wheel. A drive rod is rotatably mounted on the installation frame. The drive rod has a slot for the eccentric shaft to move. A sector tooth is fixedly connected to the end of the drive rod away from the slot. Teeth that can mesh with the sector tooth are evenly spaced and fixedly installed in the middle of the extrusion rod.

2. The heat treatment apparatus for wood modification according to claim 1, characterized in that: The elastic component includes a mounting cylinder, a sliding rod, and a strong spring. The mounting cylinder is fixedly installed inside the heat treatment chamber. The sliding rod is slidably connected inside the mounting cylinder. The upper end of the sliding rod is fixedly connected to the perforated plate. A strong spring is fixedly installed inside the lower end of the mounting cylinder. The upper end of the strong spring is fixedly connected to the lower end of the sliding rod.

3. The heat treatment apparatus for wood modification according to claim 2, characterized in that: The elastic component also includes a limiting port and a limiting plate. The upper and middle ends of both sides of the mounting cylinder are symmetrically provided with limiting ports. The lower ends of the sliding rod are fixedly connected with limiting plates that are adapted to the limiting ports, and the limiting plates can slide up and down within the limiting ports.

4. The heat treatment apparatus for wood modification according to claim 1, characterized in that: The activated carbon on the mesh plate at the bottom of the filter shell is granular activated carbon, while the activated carbon on the mesh plate at the top of the filter shell is block activated carbon.

5. The heat treatment apparatus for wood modification according to claim 1, characterized in that: The drive mechanism includes a drive frame, a drive motor, a worm gear, a rotating shaft, a worm wheel, a driving bevel gear, and a driven bevel gear; The drive frame is fixedly installed on the outer wall of the filter shell. A drive motor is fixedly installed on the drive frame. A worm gear is fixedly installed on the output shaft of the drive motor. A rotating shaft is rotatably installed on the drive frame. A worm wheel that meshes with the worm gear is fixedly installed on the rotating shaft. A driving bevel gear is fixedly installed on the rotating shaft. A driven bevel gear that meshes with the driving bevel gear is fixedly installed on the drive shaft.

6. The heat treatment apparatus for wood modification according to claim 5, characterized in that: The diameter of the driven bevel gear is larger than the diameter of the driving bevel gear.

7. A heat treatment apparatus for wood modification according to any one of claims 1-6, characterized in that: The filter housing is equipped with a stirring mechanism for stirring the exhaust gas. The stirring mechanism includes a stirring motor, a stirring shaft, stirring rods, and stirring blades. The stirring motor is fixedly installed on the outer wall of the filter housing. The output shaft of the stirring motor passes through the filter housing and is fixedly connected to the stirring shaft. Several stirring rods are fixedly connected at even intervals along the circumferential direction on the stirring shaft. Stirring blades for stirring the exhaust gas are fixedly connected to the stirring rods on the same straight line.

8. The heat treatment apparatus for wood modification according to claim 7, characterized in that: The stirring blade is L-shaped.

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