CN1277670A - a drying device - Google Patents

Abstract

The object of the present invention is to provide an efficient and economical drying apparatus, especially a drying chamber unit, which can be used for drying all wood products regardless of their size, and which can transfer moisture from the wood by flowing air under special atmospheric conditions while the transfer process is controllable, and which, in order to improve the quality and drying effect of the dried wood, makes it possible to use the drying apparatus in a fixed or mobile manner by the end user by balancing the construction of the drying oven chamber with the size and transfer criteria of the transfer container.

Description

a drying device

The present invention relates to a drying device, in particular to a device for drying wood and semi-finished wood products such as plywood or sawn boards and other finished products.

Groves, being a woody perennial, contain a lot of moisture in the wood when cut. As we all know, the cells of trees are rich in capillaries, which contain free liquid and adsorbed water molecules called moisture, which must be reduced to a certain standard in order to meet the needs of industrial use. Therefore, the wood must be properly treated, i.e. dried to an acceptable final moisture distribution by a method that prevents many drying defects. This drying process is known in economics terms as the Mayer factor.

If the climate-related conditions of the wood are favorable, it is possible to dry the wood in the natural atmosphere and obtain an acceptable dry sawn wood quality. It must be considered that drying in the atmosphere is a lengthy process, generally taking years. When the wood is finally dried, proper storage conditions including natural circulation of dry warm air are required. It must be considered that if the wood surface is not covered by rain, snow or other substances, the adsorbed water in the wood will come out and evaporate with the flow of surrounding air. Influencing the air-drying process by redepositing to adjust flow capacity has little effect on reducing the degree of danger of wood being damaged by mould, microbes, fungi, insects (factors that damage wood quality). During air drying, there is always a potential problem: wood deformation occurs when natural air drying is unpredictable and cannot be prevented. In addition, the determination of the moisture distribution in wood is carried out using air drying technology after a certain cycle time according to the climatic conditions, which means that time variables appear in the plan, which will cause other problems such as increased costs, etc. . In addition, this process also has other defects, such as low energy consumption, large drying area, storage space, and safety. The air drying time can be shortened by installing an axial fan, but there are too many factors such as relative humidity that cannot be affected by the axial fan.

In order to reduce the drying time and take into account both cost and quality, different types of drying equipment have been developed: the first is the compartment type, and the second is the tunnel drying oven type. Both types of drying equipment are stationary types of equipment. With the first type of drying equipment, the wood is placed in compartments that create different physical conditions for the drying process: temperature, humidity, air circulation capacity, etc. With the second type of drying plant, the wood is conveyed through the drying plant with the aid of a horizontal transfer unit, successively subjected to different physical conditions, with the aim of carrying out the drying process step by step. In comparison, the equipment of the compartment type is cheaper, but the yield is lower than that of the tunnel drying furnace type equipment, so its investment cost is relatively high.

Drying plants of the known type all have certain drawbacks (described in detail below), such as relatively high investment costs and difficulties in building plants for economical reasons.

The process of drying wood currently used is to achieve low temperature (between 15 and 45°C), medium temperature (between 45 and 90°C) or high temperature (between 90-130°C) through the principles of heat insulation, convection, conduction or radiation. The wood is dried.

For certain types of drying equipment, the wood is placed in the compartments by suitable conveying means. Air flow is generated by ventilation fans placed on the ceiling (rarely elsewhere), blowing laterally in some cases, but also horizontally and laterally in other cases, and vertically in other cases.

In all these known drying plants, the transfer unit is constructed in such a way that its diameter must be able to accommodate as much wood as possible. Timbers are stacked in the direction of ventilation, in such a way that air flow is possible in at least one horizontal plane. Some compromise must be reached between the size of the air gap (necessary for air flow) and the amount of wood in the kiln. To speed up drying strength, hot air is blown through the air gap. When the hot air comes into contact with highly moist wood, it absorbs as much moisture as possible, even in the deepest parts of the wood pile. This means that the more humid the wood, the stronger the air flow that the ventilation fan must generate, thereby increasing energy consumption. Since the air contains a large amount of moisture, it may condense on cooler places such as furnace walls and other equipment and cause damage. Condensed water in the drying oven is detrimental to the drying process.

As mentioned in patent application number EP 0170648A1 a newest drying process has a compartment with insulating walls. The sawn timber is stacked with longitudinal ventilation in the kiln. In this drying plant, a ventilation fan is provided which allows the airflow to pass through a heating register and then continue through the stacked wood to a cooling register and cycle continuously. In the area of the heated register, the air is heated and passed through the stacked wood to bring out the moisture, and then passes through the cooled register to the heated register to release the moisture. If freshly sawn wood is handled, this bonding process may produce coagulum. But this process is more suitable for wood with low moisture content ----- final contact wood before industrial use.

Handle extremely damp stacked lumber by saturating the air, heating the air if necessary. The discharge of large volumes of saturated air is accompanied by enormous heat losses. With this drying process, the utilization rate of energy is very low.

In addition to the drying techniques described above, a vacuum drying technique is described in patents PCT/DK 87/00012 and WO 87/04779. Among them, in order to avoid drying defects, the drying process can be monitored. This type of equipment using vacuum technology is very sensitive to maintaining normal vacuum conditions, and it is more suitable for drying wood with a low moisture content, which means that it must first use a drying process that removes most of the moisture.

For all known methods mentioned above, the following disadvantages can be summarized: such as: unacceptably low energy efficiency for the global economy, high requirements for occupied site space, high dependence on energy sources, High drying defect rate, almost no adaptability, and it is built as a fixed type of equipment with drying capacity and drying technology, where drying capacity refers to the amount of dry wood.

According to the invention, the drying unit is provided by an air-filled chamber, the surface area of which is connected to the peripheral area by exhaust and air-fill ducts. Thus, according to the principles of the present invention, the new type of drying equipment is based on a number of ventilation systems comprising different types of air inlets and outlets installed on the drying equipment. The device is equipped with a thermal compressor with a heating unit, a compression unit and a ventilation fan. The drying equipment has a drying furnace, and the wood to be dried can be sent into the furnace through a conveyor belt. This drying process is carried out in a drying oven by increasing the ventilation gas. At least one furnace wall of this drying furnace is equipped with a ventilation shaft to realize the aeration-exhaust function; as an integral unit of the drying equipment, it includes an exhaust ventilation system, which can be used for pre-orientation and as needed during the drying process. The function of being able to turn at any time, the turning is realized by the turning device, which is fixed in the furnace through a thermal compressor and is located above the drying furnace chamber, and extends from one end to the other at the bottom of the drying furnace. The gas diverter fixed by thermal compression is equipped with at least one ventilation hole, which is self-adjustable and forms an integral unit with the furnace partition wall and the furnace roof, and is connected with the tunnel-shaped ventilation shaft of the ventilation system installed on the furnace roof connected. All of the above parts are known as air diverters. The above-mentioned ventilation shaft starts from the microclimate ventilation hole installed on the furnace roof, then extends along the side wall, and finally stretches and disappears in the furnace. At least one ventilation unit is provided in the drying oven for angle adjustment via an on/off position. With the help of the ventilation shaft, the connected microclimate ventilation hole can generate flowing gas in the furnace when it is closed; when it is opened, the humid air flow in the furnace flows out, and due to the pressure difference, the fresh air outside the furnace is simultaneously into the furnace. It is recommended that tunnel-shaped ventilation shafts be prepared with insulating materials.

According to the invention, the drying plant is equipped with an auxiliary device for stacking timber or other finished timber for drying, with which vertical and horizontal stacking and longitudinal ventilation are possible. This auxiliary device also enables the vertical orientation of the main surface of the dry wood. Spacers allow the lumber to be stacked perpendicular to each other, the spacers being shorter than the unit's vertical supports. The conveyor belt is equipped with transfer wheels. In accordance with the present invention, an ultraviolet emitter is provided adjacent to the microclimate vents in the drying chamber to emit ultraviolet rays against moisture contained in the air to prevent mold, fungus and microorganisms.

According to the invention, this new type of drying equipment is equipped with magnets in the drying chamber, which can affect all physical, chemical, biological processes by magnetic treatment.

According to the invention, the drying device also comprises a thermal compressor with a ventilation fan mounted in the opening of the partition wall. The thermal compressor is designed with an irregular moderate air flow, which improves compression and heating efficiency.

The invention will now be described more fully by way of examples and description of the drawings.

Fig. 1 is a vertical sectional view of the drying equipment in the present invention on a vertical plane.

Fig. 2 is a cross-sectional view on a vertical plane of the drying equipment in the present invention.

Fig. 3 is a longitudinal sectional view of the drying equipment in the present invention on a horizontal plane.

Fig. 4 is a vertical sectional view of the drying equipment in the present invention on a vertical plane. However, in the mode of operation, during dehumidification and convective drying, it is necessary to combine the method of stacking the wood longitudinally for ventilation.

Fig. 5 is a cross-sectional view of the drying device according to Fig. 4 in a vertical plane.

Fig. 6 is a longitudinal sectional view of the drying apparatus according to Figs. 1-3. However, in order to accelerate the natural air drying process in the further operation, it is necessary to combine the accumulation method of the wood.

FIG. 7 is a cross-sectional view of the drying device according to FIG. 5 .

Figure 8 shows a compression unit according to the present invention; and

Figure 9 shows the unit for stacking timber comprised in the device according to the invention.

A kind of drying equipment shown in Figures 1-3 is generally designed to dry wood and other materials, and its drying furnace 1 is formed to meet general and other requirements known in the conveying field, wherein standard containers are used for All known transmission possibilities are satisfied. The proportion of the drying chamber 1 has certain advantages as well as certain limitations compared to all known drying plants, which however can be solved by the method described in the present invention. In this way it is possible for the user to install it in a suitable position in the quickest and easiest way and to use the drying device as a fixed or mobile device.

At least one side wall 11, 12, 13, 14 of the drying chamber 1, ie in the case of the longitudinal wall 13, is provided with a suitable door 131 to allow access to the drying chamber 1 as a personal passage. On the other hand, on the side wall 11 there is provided an extension load door which is mounted on at least one system vent 111 or in the region of said wall 11 . According to the idea of the present invention, the function of the system vent 111 will be described in detail below.

On the opposite side of the drying furnace 1, i.e. in the upper part of the wall 12, a suitable integrated microclimate vent 1211 is provided, which is equipped with a suitable exhaust duct 1210 and aeration duct 1220, and a corresponding aeration exhaust ventilation shaft 121 and 122, whereby the inside of the drying furnace can be connected with the outside air.

Utilizing the microclimate vent 1211, the ventilation shaft 121 is connected or closed to the outside air and the inner region 10' adjacent to the top 100 of the drying furnace 1; External air is connected to the interior space 10" adjacent to the bottom 101 of the drying furnace 1 and at a distance from the rear wall 12, where a thermal compressor 2 is also housed. This microclimate ventilation is used when drying is carried out in an automatic manner Port 1211 shows its huge advantages.

Fig. 8 has shown schematically thermal compressor 2, and this machine comprises following parts: the chamber 20 that is equipped with air outlet 201 for compressing, a compression unit 21, a heating unit 22, a compressor 23 and a choke, these parts The compression unit 21, the heating unit 22 and the ventilation fan 25 are connected by a suitable circuit 26, the purpose of which is to make the air flow flow from the compression unit 21 to the heating unit 22 and continue in the same direction towards the inside of the drying furnace 1. The thermal compression device 2 can condense the hot moisture when it flows out of the discharge pipe 201 with the assistance of the compression unit 21 , so as to reduce its moisture content. The air in the heating unit 22 is heated by about 2° C. compared to the temperature of the air entering the drying oven body from the peripheral area.

In the drying furnace 1, an air diverter 3 is installed on the partition wall, which is located on the top of the drying furnace, adjacent to the thermal compression unit 2, and has a certain distance from the side wall 12, which is connected to the bottom of the drying furnace 1 Area 101 is connected. The ventilation shafts 121, 122 and the thermocompression device 2 are placed between the side wall 12 and the top area 100 with the air deflector 3 placed under the top area 100 and the top area in the drying furnace 1. 100 at a distance and extends to the oven door 11 of the drying chamber 1 with the system vent 111 . The roof area 100 with the air deflector 3 is closer to the furnace roof 100 and the furnace door 11 with the system vent 111 than to the channel 30 in the furnace roof 100, the side walls 112 and the furnace door 11 with the air deflector between the top 100 of the device 3. The system vent 111 can be placed in automatic mode.

The shape and position of the air deflector 3 under the roof area 100 enables the formation of a ventilation shaft 1000 having the shape of a tunnel in which an exhaust unit 40 comprising two separate ventilation fans 41 and 42 is installed, which Two ventilation fans are installed in the positions close to the ventilation shafts 121 and 122 respectively. If possible, two ventilation fans 43 and 44 are installed in the middle of the drying furnace 1 where the heating elements 430 and 440 are installed.

Below the furnace roof and the air diverter 3, between the bottom 101 and the system vent 111 and the corresponding wall is the charging door 11, and the remaining space (furnace chamber) 6 in the furnace provides sufficient furnace capacity to make one or Further transport accesses are possible with stacking units 5 loaded with wood or other material to be dried. According to the present invention, all the details of considering position 5 will be described in detail below.

In this drying device there is also at least one ventilation unit 7 comprising at least one ventilation fan 71 equipped with an angular distribution 72 of the air flow. When the ventilation fan is in a position parallel to the adjacent side wall, it is in a stopped state; otherwise, it is in an active state when it is in other positions. For whatever reason, the ventilation fans must be inactive while the conveyor 5 is moving along the drying oven 6 . As shown in FIG. 3 , two ventilation fans 71 ′ and 71 ″ are mounted on suitable support rods 72 ′ and 72 ″ respectively, which are located on one side of the longitudinal side walls 13 and 14 of the drying furnace 1 , respectively.

As shown in FIG. 9 , the conveying and stacking unit 5 for transporting wood is equipped with wheels, and is used for sending the wood into the drying furnace cavity 6 . According to the present invention, the conveying and stacking unit 5 is constructed in such a way that the timber can be stacked vertically by means of the vertical spacer 51 and also allows vertical stacking 52 to be stacked at an angle. At least one stacking unit 5 is equipped with a wheel 50 as shown in FIG. 4 , and more stacking units 5 are suggested to be used in the present invention. In this way it is possible to load to the desired height on each individual stacking unit 5 equipped with wheels 50 . In the manner shown in FIGS. 5-7, the vertical and horizontal stacking throughout the entire drying chamber 6 can be achieved to the desired value and thus ensure good air permeability.

According to the invention, the most suitable way is to choose the following way to stack the wood on the stacking unit 5 in the drying oven chamber 6: the main surfaces of the wood are arranged in a vertical manner. It is necessary to stack the timbers with smaller widths in the stacking unit 5 in a position perpendicular to each other, and to ensure an air gap through a suitable spacer 51 ′.

According to the invention, in the drying oven 1, more precisely in the zone 10', an ultraviolet radiator 8, preferably an ultraviolet emitter, is provided to emit ultraviolet rays to the moisture contained in the air, Thereby eliminating the possibility of mold, fungus and other microbial damage.

In the zone 10 ′ in the drying oven 1 , at least two magnets 9 with dipoles can furthermore be used, and this magnetic field treatment can influence all physical, chemical, microbiological processes and all moisture present in the drying oven 1 .

According to the drying equipment in the present invention as shown in Fig. 4 and Fig. 5, through the above-mentioned compression-convection method, the overall drying process of dehumidification can be completed. Open the feed lift furnace door 11 and put the wood to be dried on the stacking unit 5 in the drying chamber 6, during this process, use the auxiliary parts 51 to properly stack the wood, if necessary, also use the vertical partition part 51' and horizontal spacer part 52. A thin layer of moisture adheres to the rough surface of the sawn boards and prevents further loss of moisture from the wood. After timber is put into drying oven cavity 6 and closes furnace door 11, just can be loaded on the exhaust fan 25 that opens exhaust fan 41,42,43,44, ventilation unit 40, be contained on the thermocompression unit and open Exhaust fan 71 is used for drying process. The system vent 111 is accordingly fitted in the wall, closing the oven door 11 . The thermocompression unit 2 is turned on to generate the proper flow of gas at a preset temperature obtained by activating the heating elements 430 and 440 of the ventilation unit 40 . When the required conditions are met, the heating elements 430 and 440 are deactivated and the required heat is only provided by the activated thermal compressor 2 at this time. In order to achieve the purpose of accelerating the drying process, the circulation of properly heated air must be established. The moisture present in/on the wood is absorbed by the air while passing through the thermal compressor 2, where the moisture is removed by means of a compression unit 21 as shown in FIG. At this stage, the drying furnace 1 is connected to the outside air through ventilation shafts 121 and 122 . While passing through the thermal compressor 2, the air is heated to a certain temperature and sucked by the fans 25, 41, 42, 43 to circulate through the tunnel-shaped ventilation shaft 1000 where, if necessary, the gas is passed through appropriate heating elements 430 and 440 is heated, and then the air flows through the channel 30, through the system vent 111 and the air diverter 3 so that the gas enters the drying oven chamber 6, where the gas passes through the channel according to the shape of the wood piled on the conveying stacking unit 50. Fan 17 imported.

This dry condition effectively transfers moisture from the wood to the circulating air. Air emerges from the drying oven chamber 6 through the ventilation shaft 122 and circulates to the outside environment. It is known scientifically that the cooling water rich in moisture tends to flow downwards, so the cooler air rich in moisture also flows towards the bottom of the drying furnace 1 . However, due to the simultaneously occurring pressure difference, the air flowing through the ventilation shaft is replaced by fresh air containing less moisture by means of the microclimate vent 1211 through the ventilation shaft 121 .

When the remaining part of the gas in the drying furnace chamber 6 passes through the thermal compression unit 2, the moisture is removed from the air by means of the compression unit 21, the gas is partially heated to the required temperature by the heating unit 22, and is then made use of all ventilation fans. Gas enters the tunnel ventilation shaft to start the recirculation cycle. Especially in the initial stage when a lot of free water is present on/in the wood, the above drying method is a very effective method without heating to high temperatures which cause drying defects which may have occurred in the past drying process.

Utilizing the above-mentioned drying process, in order to make the air humidity in the drying furnace 1 and the drying furnace chamber 6 reach a predetermined and controllable value, the drying conditions must be changed. As we all know, there are capillaries in the cells of trees, which contain free liquid and adsorbed water molecules (called moisture). If a proper drying process is used, it must be dried under suitable climatic conditions to reduce moisture. , these conditions mainly depend on the type of wood and vary with its type. In addition, moving air always reduces the moisture content in the wood.

In the above method, if this improved new drying equipment is used, it is possible to complete the drying process in a very short time without assembling any auxiliary parts and re-accumulation of wood, and also without the need for air for additional heating. The air passes through the channel 30 adjacent to the air diverter 3, opening the system vent 111 as shown in Fig. 6, this new improvement can be done even after the function disappears, considering that in most cases no additional heating of the air is required the drying process. When using this new improved drying process, microclimate vent 1211 and ventilation shafts 121 and 122 are closed.

Thus, the drying process described in the present invention differs from known drying processes in that it does not require repeated flow and mixing of air and saturated air, thereby improving the drying process of the new drying process. work efficiency. Opening the ventilation fans 41 , 42 , 43 , 44 of the vent unit 40 , the ventilation fan 25 of the thermal compressor 2 , and the ventilation fan 71 can generate suitable air circulation. External air enters the drying chamber 1 through the system vent 111 and then enters the drying chamber 6 and the self-regulating vent 31, and then flows through the thermal compressor 2 with the heating unit 22, since the thermal compressor 2 in most cases It is not open, so the outside air utilizes the ventilation fan 25 to flow into the tunnel-shaped ventilation shaft 1000 to reach the air channel 30 . When the system vent 111 is open, the air from the air channel 30 cannot re-enter the drying chamber 6, but is exhausted from the drying chamber 1 to the outside atmosphere. In this way, only dry and fresh air comes into contact with the wood. Those skilled in the art should understand that in extreme conditions the incoming fresh gas must be treated in some way, and this treatment can be done by means of the auxiliary components mentioned here, but these changes do not affect Principle of the invention.

Claims (20)

1. A drying plant based on the following parts, which include: many air system ventilation fans installed in the drying furnace (1), a thermal compressor comprising a compression unit (21) and a heating unit (22) ( 2), at least one ventilator (25), a drying furnace cavity (6), at least one feeding furnace door (131) is arranged in the drying furnace (1), and the wood to be dried is put into The above-mentioned drying furnace (1) is placed especially in the drying furnace chamber (6), during which the moisture in the wood is gradually absorbed by the flowing air, at least one furnace wall is used for the furnace door, a system vent (111 ), an air diverter (3) is used to guide the airflow direction and monitor the drying mode type, the air diverter (3) is placed on the upper part of the drying furnace cavity (6) in the drying furnace (1), and the thermal compressor One end of (2) is close to the bottom (101) of the drying furnace (1), and the above-mentioned air deflector (3) extends here adjacent to the thermal compressor (2), which is equipped with at least one self-regulating The air vent (31), the air deflector (3) extends along the direction of the system vent (111) and crosses the top of the drying furnace cavity (6) to reach the top of the drying furnace chamber (1), at the air deflector (3), The air channels (30) between the above-mentioned system vents (111) and the corresponding furnace walls and doors form a tunnel-shaped ventilation shaft (1000), in which appropriate ventilation facilities (40) are installed. 2. According to the drying equipment described in claim 1 of the present invention, it is characterized in that: inflation and exhaust wells (121) and (122) are housed on the microclimate vent (1211), and are connected with the drying furnace (1 ) Adjacent to the air diverter (3) is a heat compressor (2), a ventilation shaft (121) is placed under the furnace item (100) of the drying furnace (1), another ventilation shaft (122) is placed on the furnace bottom (101) of the drying furnace (1), and both ventilation shafts extend from the drying furnace (1) to connect with the outside air. 3. According to the drying equipment described in claim 1 and 2 of the present invention, it is characterized in that: at least one additional ventilation unit (7) is housed in the drying furnace (1), and this ventilation unit (7) comprises at least A ventilator (71) fixed on an adjustable support rod (72) enables to control the distribution of the airflow at different angles, when the ventilator is parallel to the side wall, it can be automatically closed, and when it is not parallel, then automatically turned on. 4. According to the drying equipment described in claim 1 of the present invention, it is characterized in that: in the system vent (31), a wall door (11) is housed, and when the wall door is in a closed state, the inside The circulating air flows from the tunnel-shaped ventilation shaft (1000) between the top of the drying furnace (1) and the air diverter (3) through the air channel (30) between the air diverter (3) and the wall door (11) ), and then flow into the drying furnace cavity (6) along the direction towards the self-adjusting vent (31), and flow to the thermal compression unit (2) under the action of the air diverter (3); when the system vent (111) is opened When the air flow from the tunnel-shaped ventilation shaft (1000) flows through at least two gaps, the two gaps are formed by the following process: when the system vent (111) is opened, the air is opened from the upper part in the drying furnace (1) The hole space is blown out through at least one gap, while fresh air is sucked directly into the drying chamber (1) from the outside through at least one lower gap 5. According to the drying equipment described in claim 1 of the present invention, it is characterized in that: in the tunnel-shaped ventilation shaft (1000), between the top of the air deflector (3) and the drying furnace (1), at least Several ventilation fans (41), (42), (43), (44) are installed, while suitable heating units (430) and (440) are installed in this area for supplementary heating tunnel ventilation Air in the well (1000). 6. according to the drying equipment described in the claim item 1 of the present invention, it is characterized in that: in the transfer stacking unit (5) that is used to carry dry material especially timber, not only vertical spacer (51) is housed, Also adorn horizontal spacer (52). 7. According to the drying equipment described in claim 6 of the present invention, it is characterized in that: among the conveying accumulation units (5), some are equipped with wheels (21) at least to ensure their mobility. 8. Drying plant according to claim 6 and/or 7 according to the invention, characterized in that the conveying stacking units (5) can be stacked on each other by means of vertical distance elements (51). 9. The drying device according to claim 1 of the present invention, characterized in that the thermal compression unit (2) comprises at least one compression unit (21) and one heating unit (22). 10. According to the drying equipment described in claim item 9 of the present invention, it is characterized in that: on the thermal compressor (2) in the machine room (10), a device for drawing gas close to the compression unit (21) is housed The exhaust pipe (201), and including the heating unit (22), a compressor (23), and a choke, are connected by appropriate circuits, which may also include a ventilator (25). 11. The drying device according to claim 1 of the present invention, characterized in that the drying chamber (1) is constructed on the basis of a standard container that meets the international standard for container transport dimensions. 12. Drying equipment according to claim 1 of the present invention, characterized in that the air deflector (3) is self-adjusting. 13. According to the drying equipment described in claim 1 of the present invention, it is characterized in that: in the inside of the drying furnace (1), at the position close to the ventilation opening and the exhaust ventilation shaft (121) and (122), the There is a radiation device (8). 14. The drying device according to claim 13 of the invention, characterized in that in the radiation device (8) preferably an ultraviolet emitter is provided. 15. The drying equipment according to claim 1 of the present invention, characterized in that at least two magnets (9) are installed inside the drying furnace (1). 16. According to the drying equipment described in claim 15 of the present invention, it is characterized in that: at least two permanent magnets (9) are installed inside the drying furnace (1). 17. According to the drying equipment described in claim 16 of the present invention, it is characterized in that: in the inside of the drying furnace (1), the At least two magnets at adjacent positions of the device (3) can obtain a dipole magnetic field. 18. According to the drying equipment described in claim 6 of the present invention, it is characterized in that: viewed from the horizontal direction, the distance between adjacent vertical spacer parts (51) is always shorter than the vertical support rods on the side (52). 19. According to the drying equipment described in the claims 6 and 18 of the present invention, it is characterized in that: in the stacking unit (5), in addition to the vertical distance elements (51), it is also possible to use horizontal distance elements (51' ) to ensure a certain distance between the vertically stacked timbers in the vertical direction so as to ensure an appropriate air gap. 20. According to the drying equipment described in claims 1 and 2 of the present invention, it is characterized in that: microclimate vents (1211) are used in combination with ventilation shafts (121) and (122), and when the moisture is heavy , open the microclimate vents (1211) located on the top of the drying furnace (1) and connected to the drying furnace cavity (6) through the ventilation shaft (122), and use the ventilation shaft (121), due to the pressure difference, the internal air is blown out, while external air is sucked into the area (10'); but when the microclimate vent (1211) is closed, the drying process is isolated from the outside world, and internal air circulation is generated inside the drying furnace (1).

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