Wood vacuum drying equipment

Abstract

The utility model discloses wood vacuum drying equipment which comprises a box body, a hot pressing assembly, a vacuumizing assembly and a cover body. The box body is provided with a containing groove, and a groove opening of the containing groove is located in the upper side of the box body. The hot-pressing assembly comprises a heater and at least two hot-pressing plates arranged in the vertical direction, the hot-pressing plates are arranged in the horizontal direction, a wood placement position is formed between every two adjacent hot-pressing plates, the hot-pressing plates can be placed in or moved out of the containing groove, and the heater is used for heating the hot-pressing plates; the vacuumizing assembly is arranged on the box body and can exhaust air from the containing groove. The box body is provided with a containing groove, the cover body is movably arranged on the box body and can open or close a groove opening of the containing groove, the cover body is provided with a flexible sealing piece, and when the cover body closes the groove opening of the containing groove, the flexible sealing piece covers the groove opening of the containing groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to timber drying, in particular to a kind of timber vacuum drying equipment. BACKGROUND

[0002] Timber is usually dried using timber vacuum drying equipment, and furniture is then made from the dried timber. Some existing timber vacuum drying equipment includes a box, a hot-pressing assembly, a vacuum-pumping assembly, and a cover. The box has a receiving groove. The hot-pressing assembly includes a heater and a plurality of hot-pressing plates. The heater is used to heat the hot-pressing plates. The vacuum-pumping assembly is used to pump air out of the receiving groove. The cover can close or open the receiving groove. In use, the hot-pressing plates and the timber are placed in the receiving groove alternately in the up-down direction. Then, the cover is closed. The vacuum-pumping assembly pumps air out of the receiving groove, so that the air pressure in the receiving groove decreases, thereby reducing the boiling point of the moisture inside the timber. The heater heats the hot-pressing plates, so that the moisture inside the timber boils and evaporates, achieving the effect of quickly drying the timber. A top presser is usually provided on the cover. The top presser is a driver that can actively press the hot-pressing plates, such as a hydraulic machine. The top presser is used to apply downward pressure to the uppermost hot-pressing plate, so that the hot-pressing plates and the timber are pressed as a whole, increasing the pressure of the hot-pressing plates on the timber, so that the timber can be pressed flat. The structure of the current timber vacuum drying equipment is relatively complex, and the production cost of the equipment is high. SUMMARY

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a timber vacuum drying equipment that simplifies the structure and saves the production cost of the equipment.

[0004] The timber vacuum drying equipment according to the utility model embodiment includes a box, a hot-pressing assembly, a vacuum-pumping assembly, and a cover. The box is provided with a receiving groove. The groove opening of the receiving groove is located on the upper side of the box. The hot-pressing assembly includes a heater and at least two hot-pressing plates arranged in the up-down direction. The hot-pressing plates are arranged in the horizontal direction. The timber placement position is formed between two adjacent hot-pressing plates. The hot-pressing plates can be placed in or removed from the receiving groove. The heater is used to heat the hot-pressing plates. The vacuum-pumping assembly is arranged on the box and can pump air out of the receiving groove. The cover is movably arranged on the box and can open or close the groove opening of the receiving groove. The cover is provided with a flexible sealing piece. When the cover closes the groove opening of the receiving groove, the flexible sealing piece covers the groove opening of the receiving groove.

[0005] The wood vacuum drying equipment has at least the following beneficial effects: during production, the hot-pressing plate and the wood are alternately and layer by layer stacked and placed in the accommodating groove of the box body along the up-down direction, the cover body closes the slot of the accommodating groove, then the vacuumizing assembly pumps the accommodating groove to reduce the air pressure in the accommodating groove, and the heater heats the hot-pressing plate to boil and evaporate the moisture in the wood, since the cover body covers and seals the slot of the accommodating groove through the flexible sealing sheet, the air pressure difference between the accommodating groove and the external environment causes the flexible sealing sheet to deform and press downward on the uppermost hot-pressing plate, the air pressure difference between the accommodating groove and the external environment forms a downward pressure on the hot-pressing plate and the wood as a whole through the flexible sealing sheet, so that the wood is fully pressed flat, and a hydraulic machine is not needed to press the hot-pressing plate, thereby simplifying the structure of the wood vacuum drying equipment and reducing the production and manufacturing cost of the equipment.

[0006] According to some embodiments of the present application, the cover body is detachably arranged on the box body, and the cover body is provided with a pressing frame, when the cover body closes the slot of the accommodating groove, the pressing frame is opposite to the peripheral edge of the slot of the accommodating groove and clamps the outer peripheral edge of the flexible sealing sheet.

[0007] According to some embodiments of the present application, the cover body further comprises a reinforcing cross beam, the reinforcing cross beam is connected to the pressing frame, and when the cover body closes the slot of the accommodating groove, the reinforcing cross beam spans the slot of the accommodating groove, and both ends of the reinforcing cross beam are detachably connected to the upper end of the box body.

[0008] According to some embodiments of the present application, the flexible sealing sheet comprises a fiber layer and a resin layer, and the fiber layer and the resin layer are connected in a laminated manner along the thickness direction of the flexible sealing sheet.

[0009] According to some embodiments of the present application, the bottom wall of the accommodating groove is arranged to be inclined relative to the horizontal direction, and the lowest part of the accommodating groove is provided with a drain hole.

[0010] According to some embodiments of the present application, a water storage tank is further included, the inner cavity of the water storage tank is communicated with the drain hole through a first pipeline, the first pipeline is provided with a first fluid valve for controlling the opening and closing of the first pipeline, the inner cavity of the water storage tank is communicated with the external environment through a second pipeline, and the second pipeline is provided with a second fluid valve for controlling the opening and closing of the second pipeline.

[0011] According to some embodiments of the present application, the vacuumizing assembly comprises a vacuum pump, an air pumping pipeline and a first cooling module, the air inlet of the vacuum pump is communicated with the accommodating groove through the air pumping pipeline, and the first cooling module is arranged on the air pumping pipeline and used for cooling the air pumping pipeline.

[0012] According to some embodiments of the present application, the vacuum pumping assembly is provided with two, and the two vacuum pumps have different powers.

[0013] According to some embodiments of the present application, a second cooling module is further included, and the second cooling module is used to cool the outer wall of the box.

[0014] According to some embodiments of the present application, the second cooling module is a fan, and the fan is located at one side of the box along the horizontal direction and is used to form air flow passing through the outside of the box.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 It is a schematic view of the wood vacuum drying equipment according to the embodiments of the present application;

[0018] Figure 2 It is a schematic view of the wood vacuum drying equipment according to the embodiments of the present application; Figure 1 It is a partial enlarged view of A of the wood vacuum drying equipment according to the embodiments of the present application;

[0019] Figure 3 It is a sectional view of B-B of the wood vacuum drying equipment according to the embodiments of the present application. Figure 1

[0020] Reference signs:

[0021] The box 100, the accommodating groove 110, the reinforcing rib 120;

[0022] The hot pressing assembly 200, the heater 210, the hot pressing plate 220;

[0023] The vacuum pumping assembly 300, the vacuum pump 310, the air pumping pipeline 320, the first cooling module 330;

[0024] The cover body 400, the flexible sealing sheet 410, the pressing frame 420, the reinforcing cross beam 430;

[0025] The water storage tank 510, the first pipeline 520, the first fluid valve 530, the second pipeline 540, the second fluid valve 550;

[0026] The second cooling module 600;

[0027] The wood 700. DETAILED DESCRIPTION ​

[0028] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and should not be construed as limiting the present application.

[0029] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0030] In the description of the present application, the plural means more than two. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0031] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0032] Referring to Figures 1 to 3 The wood vacuum drying equipment of the present application comprises a box body 100, a hot pressing assembly 200, a vacuum pumping assembly 300 and a cover body 400. The box body 100 is provided with a receiving groove 110, and the groove opening of the receiving groove 110 is located on the upper side of the box body 100. The hot pressing assembly 200 is arranged in the box body 100, and comprises a heater 210 and at least two hot pressing plates 220 arranged in the up-down direction. The hot pressing plates 220 are arranged in the horizontal direction, and the wood placing position is formed between the adjacent two hot pressing plates 220. The hot pressing plates 220 can be placed into or removed from the receiving groove 110, and the heater 210 is used for heating the hot pressing plates 220. The vacuum pumping assembly 300 is arranged in the box body 100 and can pump air out of the receiving groove 110. The cover body 400 is movably arranged in the box body 100 and can open or close the groove opening of the receiving groove 110. The cover body 400 is provided with a flexible sealing piece 410, and when the cover body 400 closes the groove opening of the receiving groove 110, the flexible sealing piece 410 covers the groove opening of the receiving groove 110.

[0033] In production, the hot pressing plate 220 and the wood are alternately and layer by layer stacked in the accommodating groove 110 of the box body 100 in the up-down direction, the cover body 400 closes the slot opening of the accommodating groove 110, then the vacuum pumping assembly 300 pumps the air in the accommodating groove 110 to reduce the air pressure in the accommodating groove 110, and the heater 210 heats the hot pressing plate 220 to boil and evaporate the moisture in the wood. Since the cover body 400 covers and seals the slot opening of the accommodating groove 110 through the flexible sealing sheet 410, there is an air pressure difference between the accommodating groove 110 and the external environment, so that the flexible sealing sheet 410 deforms and presses downward on the uppermost hot pressing plate 220. The air pressure difference between the accommodating groove 110 and the external environment forms a downward pressure on the hot pressing plate 220 and the wood as a whole through the flexible sealing sheet 410, so that the wood is fully pressed flat. Therefore, it is not necessary to separately use a hydraulic machine to press the hot pressing plate 220, thereby simplifying the structure of the wood vacuum drying equipment and reducing the cost of equipment production and manufacturing.

[0034] In the embodiment, the cover body 400 is detachably arranged on the box body 100. The cover body 400 is provided with a pressing frame 420. When the cover body 400 closes the slot opening of the accommodating groove 110, the pressing frame 420 is opposite to the peripheral edge of the slot opening of the accommodating groove 110 and clamps the outer peripheral edge of the flexible sealing sheet 410. When the cover body 400 is detached from the box body 100, the slot opening of the accommodating groove 110 is opened. When the cover body 400 is arranged on the box body 100, the slot opening of the accommodating groove 110 is closed. The structure is simple and convenient to use. When the cover body 400 closes the slot opening of the accommodating groove 110, the pressing frame 420 can continuously clamp the outer peripheral edge of the flexible sealing sheet 410. Therefore, the flexible sealing sheet 410 can form a sealing effect on the accommodating groove 110 during the entire vacuum drying process, and the risk of sliding of the outer peripheral edge of the flexible sealing sheet 410 relative to the box body is reduced. When the cover body 400 is opened, the pressing frame 420 and the flexible sealing sheet 410 can be removed, so that the accommodating groove 110 is opened.

[0035] Specifically, the pressing frame 420 can be locked and fixed to the upper side of the box body 100 through a bolt-nut pair or the like, so that the pressing frame 420 can stably clamp the flexible sealing sheet 410 with the box body 100. Alternatively, the outer peripheral edge of the flexible sealing sheet 410 can also be fixed at the pressing frame 420, so as to reduce the risk of sliding of the outer peripheral edge of the flexible sealing sheet 410 and avoid air leakage of the cover body 400.

[0036] It can be imagined that in other embodiments, the cover body 400 can be rotationally connected to the box body 100, so as to open or close the slot opening of the accommodating groove 110.

[0037] In the embodiment, the cover 400 further comprises a reinforcing beam 430, the reinforcing beam 430 is connected to the pressing frame 420, when the cover 400 closes the slot of the accommodating groove 110, the reinforcing beam 430 crosses the slot of the accommodating groove 110, and both ends of the reinforcing beam 430 are detachably connected to the upper end of the box 100. By arranging the reinforcing beam 430, when the cover 400 is arranged on the slot of the accommodating groove 110, the two ends of the reinforcing beam 430 are connected to the upper end of the box 100, so that the upper end of the box 100 is not easy to be shaped and deformed under the action of the pressure difference during the working process of the wood vacuum drying equipment, thereby reducing the risk of damage and deformation of the box 100 caused by the pressure difference. When the cover 400 is detached, the reinforcing beam 430 is also detached relative to the box 100, thereby facilitating the taking out or placing of the object in the accommodating groove 110.

[0038] Specifically, the two ends of the reinforcing beam 430 can be detachably connected to the box 100 by, for example, plug-in connection or screw connection.

[0039] In the embodiment, the flexible sealing sheet 410 comprises a fiber layer and a resin layer, and the fiber layer and the resin layer are laminated and connected in the thickness direction of the flexible sealing sheet 410. The fiber layer plays a role of increasing the strength of the flexible sealing sheet 410 and reducing the risk of deformation and damage of the flexible sealing sheet 410, and the resin layer can make the flexible sealing sheet 410 relatively dense and have good sealing performance, thereby facilitating the deformation of the flexible sealing sheet 410 to the lower pressing plate 220 under the action of the pressure difference.

[0040] Specifically, the fiber layer can be a nylon layer, and the resin layer can be a PVC layer. It can be imagined that in other embodiments, the fiber layer can also be made of other polyester fibers or cotton fibers, etc., and the resin layer can also be made of, for example, rubber or other resins, etc.

[0041] In the embodiment, the bottom wall of the accommodating groove 110 is arranged to be inclined relative to the horizontal direction, and the lowest part of the accommodating groove 110 is provided with a drainage hole. During the vacuum drying process, part of the water removed from the wood will be in liquid state and accumulated on the bottom wall of the accommodating groove 110, therefore, the bottom wall of the accommodating groove 110 is inclined, so that the water accumulated at the bottom of the accommodating groove 110 can be discharged out of the accommodating groove 110 through the drainage hole at the lowest part, and the drying efficiency of the wood in the accommodating groove 110 can be improved.

[0042] In the embodiment, the water storage tank 510 is further included, an inner cavity of the water storage tank 510 is communicated with the drain hole through the first pipeline 520, the first pipeline 520 is provided with a first fluid valve 530 for controlling opening and closing of the first pipeline 520, the inner cavity of the water storage tank 510 is communicated with the outside through the second pipeline 540, and the second pipeline 540 is provided with a second fluid valve 550 for controlling opening and closing of the second pipeline 540. In production, the first fluid valve 530 is opened and the second fluid valve 550 is closed in a conventional state, at this time, the water storage tank 510 is kept in communication through the first pipeline 520 and the drain hole, the air pressure in the water storage tank 510 is basically the same as the air pressure in the containing groove 110, and the accumulated water at the bottom of the containing groove 110 can be continuously discharged into the water storage tank 510 at this time. When the accumulated water in the water storage tank 510 is stored to a certain extent, the first fluid valve 530 can be closed, so that the air pressure in the water storage tank 510 is no longer related to the air pressure in the containing groove 110, and then the second fluid valve 550 is opened, at this time, the water in the water storage tank 510 can be discharged to the outside environment through the second pipeline 540. After the drainage is completed, the second fluid valve 550 is closed again and the first fluid valve 530 is opened, and the water storage tank 510 continues to receive the accumulated water at the bottom of the containing groove 110. The above structure can avoid the risk that the outside air directly enters the containing groove 110 through the drain hole during the drainage of the containing groove 110, affects the vacuum degree in the containing groove 110, and improves the process condition stability in the production process of the wood vacuum drying equipment.

[0043] Preferably, the upper end of the water storage tank 510 is lower than the lower end of the containing groove 110, so that the accumulated water at the bottom of the containing groove 110 can automatically flow into the water storage tank 510 under the action of gravity, and the use is more convenient.

[0044] Specifically, the first fluid valve 530 and the second fluid valve 550 can adopt a manual valve, or can adopt an electric valve, a hydraulic valve and the like, which are not limited here; the first fluid valve 530 and the second fluid valve 550 can adopt, for example, a butterfly valve, a ball valve or a stop valve, and the like, and a person skilled in the art can select them according to actual needs.

[0045] In the embodiment, the vacuumizing assembly 300 comprises a vacuum pump 310, an air exhaust pipeline 320, and a first cooling module 330. The air inlet of the vacuum pump 310 is communicated with the accommodating groove 110 through the air exhaust pipeline 320, and the first cooling module 330 is arranged on the air exhaust pipeline 320 and used for cooling the air exhaust pipeline 320. Specifically, the sidewall of the accommodating groove 110 is provided with an air exhaust port, one end of the air exhaust pipeline 320 is communicated with the air exhaust port, and the other end is communicated with the air inlet of the vacuum pump 310. When the vacuum pump 310 works, the air in the accommodating groove 110 is continuously extracted through the air exhaust pipeline 320, so that the air pressure in the accommodating groove 110 is kept low. Since the air temperature in the accommodating groove 110 is high, the air exhaust pipeline 320 is cooled by the first cooling module 330, that is, the air in the air exhaust pipeline 320 is indirectly cooled, the temperature of the discharged air is reduced, and the water vapor in the discharged air is also liquefied and discharged for collection, thereby reducing the influence on the external environment.

[0046] In the embodiment, two vacuumizing assemblies 300 are arranged, and the powers of the two vacuum pumps 310 are different. Specifically, the powers of the vacuum pumps 310 of the two vacuumizing assemblies 300 are different. According to different products and processes, one of the vacuum pumps 310 can be selected to be started, that is, one of the vacuumizing assemblies 300 is used, and the production process has better flexibility. It can be understood that in some cases, the two vacuumizing assemblies 300 can also be started at the same time.

[0047] Specifically, the first cooling module 330 comprises a fan, and the fan forms an air flow passing through the air exhaust pipeline 320 to cool the air exhaust pipeline 320. The first cooling module 330 can be provided with two or more fans, and all the fans are arranged along the length direction of the air exhaust pipeline 320 to better cool the extracted air. It can be imagined that the first cooling module 330 can also be water-cooled or the like, and the person skilled in the art can select it according to the actual needs.

[0048] In the embodiment, a second cooling module 600 is further arranged, and the second cooling module 600 is used for cooling the outer wall of the box body 100. By cooling the outer wall of the box body 100, the temperature of the sidewall of the accommodating groove 110 is low. Since the air temperature in the accommodating groove 110 is high, the water vapor in the air is easy to be liquefied at the sidewall of the accommodating groove 110 and to fall and accumulate to the bottom of the accommodating groove 110, and then to be quickly discharged through the drain hole. The above-mentioned way of removing the water vapor in the air of the accommodating groove 110 is much higher than the water removal efficiency of the vacuumizing device, thereby improving the efficiency of the wood vacuum drying and water removal, and further shortening the drying period of the wood.

[0049] In the embodiment, the second cooling module 600 is a fan, which is located at one side of the box 100 along the horizontal direction and is used to form the air flow passing through the outside of the box 100. The air flow passing through the outside of the box 100 is formed by the fan, so that the outer wall of the box 100 is better cooled, the cooling effect is better, and the structure is simple and easy to implement.

[0050] Specifically, the side of the fan close to the box 100 is the air inlet side, and the air flow is formed by suction.

[0051] It can be imagined that in other embodiments, the second cooling module 600 can also be other structures, for example, a cold water pipe is arranged around the outer wall of the box 100, and the outer wall of the box 100 is cooled by water cooling.

[0052] Specifically, in the hot pressing assembly 200, the heater 210 heats the water in the tank by burning gas, the waterway is arranged in the hot pressing plate 220, the heater 210 and the hot pressing plate 220 form a water circulation, and the heat is transferred by water to heat the hot pressing plate 220. It can be imagined that in other embodiments, the heater 210 can also be an electric heating pipe and the like, at this time, the heater 210 can be installed in the hot pressing plate 220 to directly heat the hot pressing plate 220.

[0053] Specifically, the outer wall of the box 100 is also provided with a reinforcing rib 120, which is used to improve the structural strength of the box 100 and reduce the risk of deformation of the box 100 under the pressure difference.

[0054] Specifically, the outside of the box 100 can also be provided with a working ladder.

[0055] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A wood vacuum drying apparatus, characterized by, The application relates to a wood drying device, which comprises a box (100) provided with a containing groove (110) with an opening on the upper side of the box (100); a hot-pressing assembly (200) comprising a heater (210) and at least two hot-pressing plates (220) arranged in the up-down direction, the hot-pressing plates (220) being arranged in the horizontal direction and forming wood placing positions between two adjacent hot-pressing plates (220), the hot-pressing plates (220) being capable of being put into or moved out of the containing groove (110), and the heater (210) being used for heating the hot-pressing plates (220); a vacuum-pumping assembly (300) arranged in the box (100) and capable of pumping air out of the containing groove (110); and a cover (400) movably arranged in the box (100) and capable of opening or closing the opening of the containing groove (110), the cover (400) being provided with a flexible sealing sheet (410), and the flexible sealing sheet (410) covering the opening of the containing groove (110) when the cover (400) closes the opening of the containing groove (110). The cover (400) is detachably arranged in the box (100), the cover (400) is provided with a pressing frame (420), and the pressing frame (420) is opposite to the peripheral edge of the opening of the containing groove (110) and clamps the outer peripheral edge of the flexible sealing sheet (410) when the cover (400) closes the opening of the containing groove (110). The cover (400) further comprises a reinforcing cross beam (430) connected to the pressing frame (420), and the reinforcing cross beam (430) crosses the opening of the containing groove (110) when the cover (400) closes the opening of the containing groove (110), and the two ends of the reinforcing cross beam (430) are detachably connected to the upper end of the box (100). The flexible sealing sheet (410) comprises a fiber layer and a resin layer, and the fiber layer and the resin layer are connected in the thickness direction of the flexible sealing sheet (410). The bottom wall of the containing groove (110) is arranged to be inclined relative to the horizontal direction, and the lowest part of the containing groove (110) is provided with a drainage hole.

2. The wood vacuum drying apparatus according to claim 1, characterized in that: The application further comprises a water storage tank (510), the inner cavity of the water storage tank (510) is communicated with the drainage hole through a first pipeline (520), the first pipeline (520) is provided with a first fluid valve (530) used for controlling the opening and closing of the first pipeline (520), and the inner cavity of the water storage tank (510) is communicated with the outside through a second pipeline (540), and the second pipeline (540) is provided with a second fluid valve (550) used for controlling the opening and closing of the second pipeline (540).

3. The wood vacuum drying apparatus according to claim 2, characterized in that: ​ 4. The wood vacuum drying apparatus according to claim 1, characterized by: ​ 5. The wood vacuum drying apparatus according to claim 1, characterized by: ​ 6. The wood vacuum drying apparatus according to claim 5, characterized in that: ​ 7. The wood vacuum drying apparatus according to claim 1, characterized by: The vacuumizing assembly (300) comprises a vacuum pump (310), an air exhaust pipeline (320) and a first cooling module (330), an air inlet of the vacuum pump (310) is communicated with the accommodating groove (110) through the air exhaust pipeline (320), and the first cooling module (330) is arranged on the air exhaust pipeline (320) and used for cooling the air exhaust pipeline (320).

8. The wood vacuum drying apparatus according to claim 7, characterized in that: The vacuumizing assembly (300) is provided with two, and the powers of the two vacuum pumps (310) are different.

9. The wood vacuum drying apparatus according to claim 1, characterized by: A second cooling module (600) is further included, and the second cooling module (600) is used for cooling the outer wall of the box body (100).

10. The wood vacuum drying apparatus according to claim 9, characterized in that: The second cooling module (600) is a fan, the fan is located at one side of the box body (100) in the horizontal direction and is used for forming air flow passing through the outside of the box body (100).

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