Compression Wood Forced Quenching Device

Abstract

To provide a compacted wood forced quenching device which improves quenching freezing efficiency of a compacted wood board in a production line.SOLUTION: A compacted wood forced quenching device comprises a quenching shell provided with a tunnel type quenching channel. A horizontally moving transmission device is arranged below the quenching channel in the quenching shell. A spraying device and an air blowing device are arranged above the quenching channel. The spraying device comprises a plurality of spraying assemblies evenly arranged in the channel at intervals, each spraying assembly comprises a plurality of spraying pipes arranged in a radial direction and a plurality of spraying nozzles evenly arranged below the spraying pipes at intervals, and each spraying pipe is connected to a liquid storage tank arranged on a side edge of the quenching shell through a conveying pipeline, an infusion pump and a pressure pump. The air blowing device comprises one to three of air blowers which are arranged between the adjacent spraying assemblies and distributed in the radial direction.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention belongs to the field of wood board processing technology, and particularly relates to a forced quenching device for densified wood.

Background Art

[0002] Densified wood is a reinforced treatment material that is hard, has a high density, and high strength, which is manufactured by hot pressing treatment of wood boards. After the wood boards are compressed and densified, both their tissue structure and physical and mechanical properties change significantly - the mechanical strength becomes stronger, the deformation of the wood boards becomes smaller, and they are excellent in wear resistance and durability, thereby effectively improving the performance of the wood boards and enhancing the utilization value of the wood boards.

[0003] In the conventional processing technology of densified wood, specific steps such as pretreatment, lamination treatment, heating and pressing treatment, hardening treatment, cooling treatment, and curing treatment are performed on the wood boards. Among them, for the cooling treatment, the water cooling and / or air cooling methods are often adopted.

[0004] Patent Document 1: In the patent disclosed in Patent Application No. CN202020196506.5, a water cooling device is arranged to perform primary cooling on the compressed wood, and then an air cooling device is arranged to perform secondary cooling on the wood. In this process, it is necessary to shorten the cooling time as much as possible, and through the process of rapid temperature reduction and rapid cooling, that is, the quenching process, the strength and hardness of the densified wood are effectively improved (increased), and at the same time, the internal stress is reduced and the brittleness is decreased, thereby improving the mechanical properties of the densified wood. However, the air cooling and water cooling processes of the prior art need to lengthen the laying lines of the water cooling equipment and the air cooling equipment, or improve the residence time of the wood in the unit volume to achieve temperature reduction. This type of water cooling and air cooling method has low heat exchange efficiency and too long cooling time, making it impossible for the densified wood to exhibit excellent mechanical properties.

[0005] The applicant mentions that the same type of patent realizes rapid quenching with a coolant (such as liquid nitrogen). However, in the prior art, no related equipment for quenching and cooling is laid on the densified wood production line. How to realize the rapid quenching of densified wood in the flow operation line is particularly important for the product itself. Also, in order to save the cost of equipment laying and occupied space, it is necessary to solve the technical problem of how to shorten the laying of the process line and improve the quenching efficiency of the densified wood board in the flow operation line as soon as possible.

[0006] In addition, the high-frequency treated densified wood is thick, generally 3 cm or more. In the actual quenching operation process, the quenching time is too short to reduce the central temperature in the densified wood to the preset temperature. To solve this technical problem, it is necessary to increase the quenching time in the quenching device of the densified wood. However, increasing the quenching time affects the reduction of the processing efficiency of the wood board.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] In order to solve the above technical problems, the present invention provides a forced quenching device for densified wood that improves the quenching and freezing efficiency of the densified wood board in the production line.

Means for Solving the Problems

[0009] The specific technical solutions of the present invention are as follows.

[0010] The present invention provides a forced quenching device for consolidation wood, which is used to spray and cool the consolidation wood during running. The device includes a quenching housing provided with a tunnel-type quenching passage. A conveying device that moves horizontally is provided below the quenching passage in the quenching housing. A spraying device and a blowing device are provided above the quenching passage. The spraying device includes a plurality of spraying modules uniformly spaced and installed at the top in the quenching passage. Each spraying module includes several spraying pipes arranged radially and a plurality of spraying nozzles provided below the spraying pipes and uniformly spaced. Each spraying pipe is connected to a liquid storage tank provided on the side of the quenching housing through a transport pipe, a liquid extraction pump, and a pressure pump. The blowing device includes one to three blowers distributed radially provided between adjacent spraying modules.

[0011] In one improved technical solution, each spraying module includes two spraying pipes installed radially. Six to twelve of the spraying nozzles are provided below each spraying pipe. The distance from the spraying nozzles to the conveying surface of the conveying device is 25 to 40 cm.

[0012] In the improvement of the second aspect of the present invention, the conveying device includes a conveying mesh belt provided below the quenching passage, a roller module that moves the conveying mesh belt, and a driving mechanism that provides power to the roller module. Circulation chutes in the same vertical plane are provided on both sides of the quenching passage. Sliders that fit into the circulation chutes are provided on both sides of the conveying mesh belt. The conveying mesh belt adopts a plurality of axial support rods and a mesh structure formed by warp knitting and / or weft knitting on the support rods.

[0013] In one improved technical solution, the support rods and the mesh of the conveying mesh belt are made of a low-temperature metal material. The mesh structure is a three-dimensional solid structure formed by knitting low-temperature metal fine wires to a thickness of 0.5 to 3 cm. The roller module includes two rollers provided at both ends of the quenching passage. The front end and the rear end of the conveying mesh belt form a ring body by rotating around the rollers, and the driving mechanism provides rotational power to at least one of the rollers.

[0014] In the improvement of the third aspect of the present invention, sealing plates are provided at the tops of the front end face and the rear end face of the quenching through housing. An entrance and exit is formed between the sealing plate and the conveying surface of the conveying device. A baffle plate with adjustable height is provided on the sealing plate, and a windproof sheet extending toward the conveying surface of the conveying device is provided inside the baffle plate.

[0015] In one improved technical solution, the windproof plate is composed of a plurality of thin sheets arranged in parallel. The sealing plate has a structure that inclines inward from top to bottom, and is installed inclined synchronously with the baffle plate that is attached to it.

[0016] In a further improved technical solution, a plurality of vertically adjustable through holes are provided in the baffle plate. The baffle plate is fixed by a locking screw inserted into the sealing plate from the outside of the vertically adjustable through hole, or the baffle plate is connected to the sealing plate by an automatic telescopic mechanism.

[0017] In one improved technical solution, a position sensor and a distance sensor are provided at the bottom position of the sealing plate. Observation doors distributed axially are provided on the housing wall surfaces on both sides of the quenching housing, and a rubber sealing ring is provided on the inner frame of the observation door.

[0018] In the improvement of the fourth aspect of the present invention, the conveying mesh belt is divided into several conveying units, and a vertical cooling part is provided between adjacent conveying units. The vertical cooling part includes a group of support rollers distributed in the longitudinal direction installed at the front end and the rear end of the tunnel running, a link-shaped conveying rail installed around the side of the support roller, a plurality of supporting mechanisms provided between the link-shaped conveying rails on both sides, and a driving mechanism for driving the rotation of the support roller group. When the supporting mechanism rotates on the conveying unit at the front end or the rear end, the supporting plate installed on the supporting mechanism abuts against the corresponding end of the conveying mesh belt. A pushing mechanism for pushing the consolidation wood on the supporting plate during abutment is provided on the side of the supporting mechanism corresponding to the front end of the tunnel running. A first lateral spray pipe is provided in the middle between the two link-shaped conveying rails, and at least a plurality of spray nozzles facing the top side are provided on the first lateral spray pipe.

[0019] In one improved technical solution, the support roller group is respectively provided on a plurality of independent roller bodies on both sides. On each side, there are an upper front roller and a lower front roller provided at the front end of the running, a rear upper roller and a rear lower roller provided at the rear end of the running, an upper middle roller provided in the upper middle part between the upper front roller and the rear upper roller, and a lower middle roller provided in the lower middle part between the lower front roller and the rear lower roller. Between the lower middle rollers on both sides, they are connected by the same roller shaft. At least one of the lower middle rollers is connected to the driving mechanism. Connecting rods facing each other are uniformly distributed inside the link-shaped conveying rails on both sides. The connecting rods extend inward, and the extending ends protrude from the inside of the corresponding roller body on the side. A rotating ring is rotatably fitted to the inner end of the connecting rod. Between the rotating rings on both sides, they are connected by the supporting plate. The spray nozzles of the plurality of first lateral spray pipes are installed facing the front side, the rear side, and the top side. A second lateral spray pipe is provided in the upper middle part of the link-shaped conveying rail.

Advantages of the Invention

[0020] The forced quenching device for consolidated wood of the present invention adopts a tunnel-type quenching passage to perform quenching and freezing on the hot-pressed consolidated wood, improving the heat exchange efficiency and shortening the freezing time. Moreover, the strength and hardness of the consolidated wood are improved by the quenching process, and the internal stress is reduced to lower the brittleness, thereby improving the mechanical properties of the consolidated wood.

[0021] The forced quenching device for consolidated wood of the present invention uses a three-dimensional conveying mesh to fully contact each surface of the consolidated wood board with the quenching liquid, improving the heat exchange efficiency and shortening the freezing time. In addition, the device adds vertical movement in the tunnel and solves the technical problem of incomplete freezing with a sufficient liquid nitrogen spraying method.

Brief Description of the Drawings

[0022]

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Embodiments for Carrying Out the Invention

[0023] The following examples further illustrate the content of the present invention, but do not limit the present invention. Without departing from the spirit and essence of the present invention, any modification or substitution made to the method, steps or conditions of the present invention shall fall within the scope of the present invention.

[0024] The present invention is a forced quenching device for impregnated wood to achieve cooling by spraying a cooling liquid onto a traveling wooden board block in a flow work line. The device is provided with a tunnel-type quenching passage, and the impregnated wood high-frequency compacted by a conveyor belt is put into the quenching passage at one time for spray quenching.

[0025] As shown in FIGS. 1 to 5, the forced quenching device for impregnated wood includes a quenching housing 1 provided with a tunnel-type quenching passage 2. A conveying device 3 that moves horizontally is provided below the quenching passage 2 in the quenching housing 1, and a spraying device and a blowing device are provided above the quenching passage 2. Receiving frames 19 are provided at both the front end and the rear end of the quenching housing 1. The front end and the rear end of the conveying device 3 extend above the receiving frames 19 at both ends respectively and are used to abut against the equipment in the previous stage and the next stage.

[0026] The spraying device includes a plurality of spraying modules uniformly spaced and installed at the top in the quenching passage. Each of the spraying modules includes several spraying pipes 40 arranged radially and a plurality of spraying nozzles 41 provided below the spraying pipes 40 and uniformly spaced. Each of the spraying pipes 41 is connected to a liquid storage tank 5 provided on the side of the quenching housing 1 via a transport pipe 42, a liquid extraction pump, and a pressure pump. The air blowing device includes one to three radially distributed air blowers 6 provided between adjacent spraying modules. The air blowing motor 60 of the air blower 6 protrudes from the top of the quenching housing 1. The quenching liquid is loaded in the liquid storage tank, for example, liquid nitrogen is adopted, and the temperature of the liquid nitrogen is -190°C to -200°C. The liquid nitrogen is sprayed from the spraying nozzles onto the consolidated wood board surface of the conveying belt. The liquid nitrogen vaporizes by exchanging heat with it. After the heat exchange on the wood board surface, the hot surface cannot temporarily absorb more heat from the liquid nitrogen, which slows down the vaporization rate of the liquid nitrogen. Therefore, in the present invention, by installing the air blowing device, the gas can be blown away to blow the dripping liquid onto the wood board surface, and the cooling efficiency of the liquid nitrogen can be improved.

[0027] To more reasonably arrange the combined use of the spraying device and the air blowing device, in the specific example shown in FIG. 5, each of the spraying modules includes two spraying pipes 40 installed radially. Six to twelve of the spraying nozzles 41 are provided below each of the spraying pipes 40. The distance from the spraying nozzle 1 to the conveying surface of the conveying device is 25 to 40 cm.

[0028] In an improved example of a conveying device, as shown in FIG. 6, the conveying device includes a conveying mesh belt 30 provided below the quenching passage 2, a roller module for moving the conveying mesh belt 30, and a driving mechanism. The driving mechanism employs a motor and is combined with a speed reducer 35 to stably drive the movement of the conveying mesh belt. The speed reducer 35 is provided outside the quenching housing corresponding to the mounting position of the motor. Circulation chutes in the same vertical plane are provided on both sides of the quenching passage 2. Sliders fitting into the circulation chutes are provided on both sides of the conveying mesh belt 30. As shown in FIG. 7, the conveying mesh belt 30 is a net body 32 formed by warp knitting and / or weft knitting a plurality of axially supporting rods 31 and the supporting rods 31. This type of knitted net body 32 forms a three-dimensional regular solid net structure after being knitted using metal bars. Gaseous and liquid nitrogen can enter from above into the interior and below of the conveying net body, enabling the bottom surface of the wooden board to achieve sufficient contact with the quenching liquid and further improving the quenching and cooling efficiency. The supporting rods 31 and the net body 32 of the conveying mesh belt 30 are made of a low-temperature metal material, which is a material applicable for use at the temperature of the quenching liquid. For example, when the quenching liquid is liquid nitrogen, it can be made of austenitic stainless steel or nickel steel material with a high nickel content. In the design of the roller module, it is only necessary to realize the circular circulation movement of the conveying mesh belt. Specifically, the roller module includes two rollers 33 provided at both ends of the quenching passage 2. The front end and the rear end of the conveying mesh belt 30 form a ring body by rotating around the rollers 33, and the driving mechanism provides rotational power to at least one of the rollers 33.

[0029] In one improved technical solution, as shown in FIG. 8, sealing plates 11 are provided at the tops of the front end face and the rear end face of the quenching through housing. An entrance / exit 16 is formed between the sealing plate 11 and the conveying surface of the conveying device. A baffle plate 12 with adjustable height is provided on the sealing plate 11, and a windproof sheet 13 extending towards the conveying surface of the conveying device is provided inside the baffle plate 12. In order to prevent excessive overflow of cold air in the quenching tunnel, the sealing plate is formed with a narrow entrance / exit from top to bottom. By installing the baffle plate and the windproof sheet, the height of the entrance / exit is adjusted to correspond to the height of the wooden board, ensuring that the wooden board can smoothly enter and exit while preventing the cold air on the wall surface from overflowing.

[0030] Among them, the windproof plate 13 is composed of a plurality of thin sheets arranged in parallel. The thin sheets can similarly be made of a low-temperature metal sheet material. By installing it on a plurality of arranged sheets, it can avoid blocking the entry and exit of the compacted wooden board, and even a high wooden board can pass through smoothly. The sealing plate 11 has a structure that inclines inwards from top to bottom and is installed inclined in synchronization with the baffle plate 12 attached to it.

[0031] The baffle plate can be installed as a baffle structure with adjustable height. In one technical solution of manual adjustment, a plurality of vertically adjustable through holes 14 are provided on the baffle plate 12, and the baffle plate 12 is fixed by a lock screw 15 inserted into the sealing plate from the outside of the vertically adjustable through hole 14. In another technical solution of automatic adjustment, the baffle plate is connected to the sealing plate by an automatic telescopic mechanism.

[0032] A position sensor and a distance sensor are provided at the bottom position of the sealing plate 11. The position sensor can detect whether the compacted wooden board is at a predetermined position. The distance sensor can calculate the thickness of the wooden board based on the distance from the detected wooden board to it, and automatically adjust the height of the baffle plate based on the thickness of the wooden board.

[0033] In one example, observation doors 7 are provided along the axial direction on the housing wall surfaces on both sides of the quenching housing 1. A rubber sealing ring is provided on the inner frame of the observation door 7, which facilitates an operator to observe the wooden board during quenching and cooling and perform maintenance on the equipment. Equipment such as an electric control box 70 and an operation box 71 are provided outside the housing of the quenching housing 1.

[0034] The length of the above-mentioned quenching housing (i.e., the quenching tunnel) is set according to the actual usage situation. For example, for a quenching housing with a length of 10 - 15 m, after high-frequency densification, the densified wood at 90 - 100 °C gradually passes through the quenching tunnel and is quenched and cooled. The rapid freezing time of the wood is 7 - 8 minutes, but the central part of the wood is not frozen. It is necessary to put it back into the quenching tunnel for secondary rapid freezing or increase the residence time of the wooden board in the quenching tunnel by adjusting the moving speed of the conveying device. The former method requires manual re-entry into rapid freezing, increasing the manual operation cost and affecting the processing speed of the production line. The latter also affects the quenching and freezing speed of the production line. A more reasonable method is to extend the length of the quenching tunnel to achieve complete rapid freezing of the wooden board. However, due to limitations in the production site and the fact that extending the equipment will undoubtedly increase the site cost, the present invention adds a vertical movement in the tunnel and solves this technical problem with a sufficient liquid nitrogen spraying method.

[0035] In a specific example, the conveying mesh belt 30 is divided into several conveying units, and a vertical cooling part is provided between adjacent conveying units. As shown in FIGS. 9 to 10, the vertical cooling part includes a group of support rollers distributed in the longitudinal direction installed at the front end and the rear end of the tunnel running, a link-shaped conveying rail 81 installed around the side of the support rollers, a plurality of supporting mechanisms 82 provided between the link-shaped conveying rails 81 on both sides, and a driving mechanism for driving the rotation of the group of support rollers. When the supporting mechanism 82 rotates to the conveying unit at the front end or the rear end, a supporting plate 83 installed on the supporting mechanism 82 abuts against the corresponding end of the conveying mesh belt 30, and a pushing mechanism 84 for pushing the consolidation wood on the supporting plate 83 during abutment is provided on the side of the supporting mechanism 82 corresponding to the front end of the tunnel running. A first lateral spray pipe 85 is provided in the middle between the two link-shaped conveying rails 81, and at least a plurality of spray nozzles 86 facing the top side are provided on the first lateral spray pipe 85. In an improved example, the spray nozzles 86 of the plurality of first lateral spray pipes 85 are installed facing the front side, the rear side, and the top side, a second lateral spray pipe 87 is provided in the middle above the link-shaped conveying rail, and a plurality of spray nozzles 86 are installed at the bottom of the second lateral spray pipe 87. In this technical solution, the quenching and cooling time of the consolidation wood is increased by the longitudinal transportation of the conveying mesh belt, and the quenching is performed more effectively by the convection spraying operation of the first lateral spray pipe 85 and the second lateral spray pipe 87, and the quenching time is shortened when it is ensured that the consolidation wood is completely frozen and reaches the standard. Also, when installing the first lateral spray pipe and the second lateral spray pipe, in order to avoid blocking the supporting mechanism of the lateral pipe, the liquid supply pipe of the lateral pipe is connected from the outside of the group of support rollers.

[0036] According to the above technical solution, in a more specific embodiment, the support roller group is respectively provided on a plurality of roller bodies on both sides. Each side specifically includes a front upper roller 801 and a front lower roller 802 provided at the front end of travel, a rear upper roller 803 and a rear lower roller 804 provided at the rear end of travel, an upper middle roller 805 provided in the middle upper part above the front upper roller 801 and the rear upper roller 803, and a lower middle roller 806 provided in the middle lower part below the front lower roller 802 and the rear lower roller 804. Each of the roller bodies on each side is an independent roller body and is fixed to both sides of the quenching passage via a connection bracket. Among them, between the lower middle rollers 806 on both sides, they are connected by the same roller shaft 807, and at least one of the lower middle rollers 806 is connected to the drive mechanism. Connecting rods 810 are evenly distributed on the inner sides of the link-shaped transport rails 81 on both sides. The connecting rods 810 extend inward, and the extending ends protrude from the inner sides of the corresponding roller bodies. A rotating ring 811 is rotatably fitted to the inner ends of the connecting rods 810. Between the rotating rings 811 on both sides, they are connected by the support plate 83. The support plate 83 may be any of a lattice plate, a grid plate, or a frame structure. After the support plate 83 receives the densified wood from the transport mesh, it slowly moves around the link-shaped transport rail. During the movement, the first and second lateral spray pipes perform omnidirectional spray freezing on the densified wood. When it rotates to the transport mesh at the front end, a push mechanism 84 installed inside the support plate 83 corresponding to this position pushes the densified wood onto the transport mesh at the front end. The push mechanism 84 adopts a conventional axial movement device, such as a telescopic cylinder structure, to realize the push on the densified wood.

[0037] In the first aspect of the present invention, a tunnel-type quenching passage is adopted to perform quenching and freezing on hot-pressed consolidated wood, improving the heat exchange efficiency to shorten the freezing time, and moreover, improving the strength and hardness of the consolidated wood by the quenching process, reducing the internal stress and lowering the brittleness, thereby improving the mechanical properties of the consolidated wood. In the second aspect, it is improved by using a three-dimensional conveying mesh to sufficiently contact each surface of the consolidated wood board with the quenching liquid, improving the heat exchange efficiency and shortening the freezing time. In the third aspect, vertical movement is added in the tunnel and the technical problem of incomplete freezing is solved by a sufficient liquid nitrogen spraying method.

[0038] Hereinafter, the equipment effect of the present invention will be further tested and described by the quenching and freezing test of the consolidated wood board block.

[0039] 1. Six standard-sized poplar slats (also called cork slats) that have been high-frequency consolidated under the same process conditions with a length of 100 cm ± 1 cm and a width of 22 cm ± 0.2 cm are selected and evenly divided into 2 groups, with the number of samples in each group being 3. The states of the three wooden boards in each group are as follows: the thickness of the first block is 3 cm, the normal temperature is 35 °C, the thickness of the second block is 2 cm, the hot-pressed temperature is 90 - 100 °C, the thickness of the third block is 2.6 cm, and the hot-pressed temperature is 90 - 100 °C.

[0040] 2. The quenching process is as follows.

[0041] 2.1 The quenching device of the present invention with a quenching passage (without a vertical cooling section) for performing the quenching process having a length of 12 m has a machine temperature set at -130 °C, and the three wooden boards of the first group are put into the quenching passage for testing. The experimental results are as follows. For the first block, the time for rapid freezing to about -3 to -5 °C is about 10 minutes, and there is significant frosting at the center of the quenching. In the second block, it is taken out after rapid freezing for 8 minutes. The central part is not frozen, and it is put back into the passage and rapidly frozen for 6 minutes again. The central temperature is about -3°C, and the center is ice-cooled with frosting. In the third block, it is taken out after rapid freezing for 8 minutes. The central part is not frozen, and it is put back into the passage and rapidly frozen for 7 minutes again. The central temperature is about -3°C, and the center is ice-cooled with frosting.

[0042] 2.2 Install a vertical cooling part in the middle of the quenching passage in Step 2.1. The vertical height of the rail of the vertical cooling part is 2 m, and at the same time, install a convection spray device. Otherwise, all other process conditions are the same as those in Step 2.1. Set the machine temperature to -130°C, and put the second set of three wooden boards into the quenching passage for testing. The experimental results are as follows. For the first block, the time for rapid freezing to about -3 to -5°C is about 8 minutes, and there is significant frosting in the center after quenching. In the second block, it is taken out after rapid freezing for 10 minutes. The central temperature is about -3°C, and the center is ice-cooled with frosting. In the third block, it is taken out after rapid freezing for 11 minutes. The central temperature is about -3°C, and the center is ice-cooled with frosting.

[0043] As can be seen from the test results, the rapid freezing time of the second set of samples is significantly less than that of the first set of samples. This is considered to be for adding vertical movement and improving the freezing efficiency with a sufficient liquid nitrogen spraying method.

[0044] The embodiments described above do not limit the protection scope of the technical solution. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the above embodiments are all included within the protection scope of the technical solution.

Claims

1. An apparatus for spraying a cooling liquid onto traveling compacted wood to cool it, comprising a quenching housing with a tunnel-type quenching passage, a conveying device that moves horizontally below the quenching passage in the quenching housing, and a spraying device and a blowing device above the quenching passage, The spraying device includes a plurality of spray modules uniformly spaced apart and installed at the top of the quenching passage, each of the spray modules includes several spray pipes arranged in a radial direction and a plurality of spray nozzles uniformly spaced apart below the spray pipes, each of the spray pipes is connected to a liquid storage tank installed at the side of the quenching housing through a transport pipe, a liquid extraction pump and a pressure pump, and the blowing device includes 1 to 3 blowers distributed radially between adjacent spray modules. A compressed wood forced hardening device characterized in that a sealing plate is provided on both the top of the front end surface and the top of the rear end surface of the hardening housing, an entrance / exit is formed between the sealing plate and the conveying surface of the conveying device, a height-adjustable baffle plate is provided on the sealing plate, and a windbreak sheet extending toward the conveying surface of the conveying device is provided on the inside of the baffle plate.

2. The compressed wood forced quenching device according to claim 1, characterized in that each spray module includes two radially installed spray pipes, and 6 to 12 spray nozzles are provided below each spray pipe, and the distance from the spray nozzles to the conveying surface of the conveying device is 25 to 40 cm.

3. The compressed wood forced quenching apparatus of claim 1, characterized in that the conveying device includes a conveying mesh belt provided below the quenching passage, a roller module that moves the conveying mesh belt, and a drive mechanism that provides power to the roller module, a circulation chute in the same vertical plane is provided on both sides of the quenching passage, a slider that fits into the circulation chute is provided on both sides of the conveying mesh belt, and the conveying mesh belt adopts a mesh structure formed by multiple axial support rods and warp knitting and / or weft knitting on the support rods.

4. The support rods and the net of the conveying mesh belt are made of low-temperature metal material, and the net structure is a three-dimensional structure formed by weaving low-temperature metal wires to a thickness of 0.5 to 3 cm, and the low-temperature metal material is an austenitic stainless steel or a nickel steel material with a high nickel content. The compressed wood forced quenching device according to claim 3, characterized in that the roller module includes two rollers provided at both ends of the quenching passage, the front and rear ends of the conveying mesh belt rotate around the rollers to form a ring body, and the drive mechanism provides rotational power to at least one of the rollers.

5. The compressed wood forced hardening device described in Claim 1, characterized in that the windbreak sheet is composed of a plurality of thin sheets arranged in parallel, and the sealing plate has a structure that slopes inward from top to bottom and is installed at a synchronous slope with the baffle plate that is attached to it.

6. The baffle plate is provided with a plurality of vertical adjustment through holes, and the baffle plate is fixed by lock screws inserted into a sealing plate from outside the vertical adjustment through holes, Alternatively, the baffle plate is connected to the sealing plate by an automatic telescopic mechanism.

7. The device for forced hardening of compacted wood as described in claim 1, characterized in that a position sensor and a distance sensor are provided at the bottom position of the sealing plate, observation doors are provided on both sides of the housing wall surface of the hardening housing and distributed along the axial direction, and a rubber sealing ring is provided on the inner frame of the observation door.

8. The conveying mesh belt is divided into several conveying units, and a vertical cooling section is provided between adjacent conveying units; 4. The apparatus for forced quenching of compacted wood according to claim 3, characterized in that the vertical cooling section includes a group of support rollers distributed in the vertical direction installed at the front and rear ends of the tunnel running, a link-shaped transport rail installed around the sides of the support rollers, a plurality of support mechanisms installed between the link-shaped transport rails on both sides, and a drive mechanism for driving the rotation of the group of support rollers, wherein when the support mechanism rotates to the transport unit at the front or rear end, the support plate installed on the support mechanism abuts against the transport mesh belt at the corresponding end, and a push mechanism is provided on the side of the support mechanism corresponding to the front end of the tunnel running for pushing the compacted wood on the support plate when abutted, a first lateral spray pipe is provided in the middle between the two link-shaped transport rails, and the first lateral spray pipe is provided with a plurality of spray nozzles facing at least toward the top side.

9. The support roller group is provided on a plurality of independent roller bodies on both sides, and includes a front upper roller and a front lower roller provided with a running front end, a rear upper roller and a rear lower roller provided with a running rear end, an upper middle roller provided at an upper middle part of the front upper roller and the rear upper roller, and a lower middle roller provided at a lower middle part of the front lower roller and the rear lower roller, the lower middle rollers on both sides are connected by the same roller shaft, at least one of the lower middle rollers is connected to the driving mechanism, the connecting rods facing each other are uniformly distributed on the inner side of the link-shaped transport rails on both sides, the connecting rods extend inward, and the extended ends protrude from the inner side of the roller body on the corresponding side, the rotating rings are rotatably fitted to the inner ends of the connecting rods, and the rotating rings on both sides are connected by the support plate, The compressed wood forced quenching device according to claim 8, characterized in that the spray nozzles of the first horizontal spray pipes are installed toward the front, rear and top sides, and a second horizontal spray pipe with a spray nozzle at the bottom is provided in the upper middle part of the ring-shaped transport rail.

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