A forced air drying cabinet

Abstract

The present application relates to material drying equipment technical field, specifically to a kind of blast drying oven, blast drying oven includes cabinet, heat source, adjusting mechanism and multiple trays, wherein heat source is used to input hot air to the inside of cabinet;Multiple trays are located in cabinet, and along vertical direction arrangement, the top of each tray is provided with material placing plate, material placing plate can be folded, and it has corresponding first corrugated form and second corrugated form before and after folding, when in first corrugated form, material placing plate is used to place powdery material, and preliminary drying of material can be realized;When material becomes more dry, adjust material placing plate to second corrugated form by adjusting mechanism, material placing plate has smaller period and higher wave crest than first corrugated form, to make material rolling, and then its more humid part inside is exposed, can be dried by hot air, to improve drying uniformity, also can be blocked by wave crest hot air direct blowing, reduce drift.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material drying equipment, in particular to a blast drying oven. BACKGROUND

[0002] The blast drying oven is a device for drying various materials, which forms a directional air flow in the box body by driving hot air, uses heat transfer to quickly evaporate the surface moisture of the material, and timely carries away the water vapor with the air flow, so as to realize efficient drying of the material.

[0003] In related technologies, for example, Chinese patent application CN115962628A discloses a blast drying oven with uniform drying, which sends hot air to the side plates on both sides of the box body through the air inlet pipe of the air blower. The side plates are internally designed with specific flow channels. The hot air can form a multi-dimensional air supply structure through the air blowing pipe in the middle of the side plate and the air outlet at the bottom, so as to form a three-dimensional circulation of hot air in the box body.

[0004] However, the existing blast drying oven with uniform drying also has some problems in the actual drying process of the material: when drying the powder material, due to its small particle size and light weight, it is easy to be carried away by the air flow and separated from the container under the continuous blowing of hot air, not only causing the loss of the powder material and affecting the accuracy of subsequent experiments or production, but also causing pollution inside the box body. The long-term accumulation of powder may also adhere to the surface of the heating element or sensor, affecting the normal operation of the equipment and the temperature control accuracy. To solve this problem, the common solution is to cover a filter paper or aluminum foil with small holes above the powder material. Although this method can block the powder material to some extent, it will also significantly weaken the direct contact efficiency of hot air and powder material. The existence of small holes will also limit the exchange speed of air flow, making it difficult to quickly discharge the water vapor around the powder material, thereby prolonging the drying time and reducing the drying efficiency. SUMMARY

[0005] Therefore, it is necessary to provide a blast drying oven to solve the problems of being easily blown away and low drying efficiency of the powder material in the drying process.

[0006] The above-mentioned purpose is achieved by the following technical solutions:

[0007] A blast drying oven, comprising:

[0008] a box body;

[0009] a heat source configured to input hot air into the inside of the box body, the hot air flowing along a preset flow path in the box body and then being discharged from the box body;

[0010] a plurality of trays are arranged in the vertical direction in the box body, and each of the trays is provided with a material placing plate on the top, the material placing plate is configured to be able to place powder materials, and is foldable, and has a corresponding first corrugated shape and a second corrugated shape before and after folding, when in the first corrugated shape, the material placing plate has a first period and a first wave crest height, when in the second corrugated shape, the material placing plate has a second period and a second wave crest height, the second period is smaller than the first period, and the second wave crest height is greater than the first wave crest height;

[0011] an adjusting mechanism configured to adjust the shape of the material placing plate.

[0012] Further, the first end of the material placing plate in the folding direction is hinged to the tray, the adjusting mechanism comprises a plurality of sliding blocks, the sliding blocks are capable of sliding in the folding direction of the material placing plate, and the second end of the material placing plate in the folding direction is connected to the sliding blocks through a connecting assembly.

[0013] Further, the connecting assembly comprises a hook portion and a spring, the hook portion is arranged on each of the sliding blocks, and the spring is arranged on the bottom of the V-shaped part closest to the second end of each of the material placing plates, the spring is configured to enable the V-shaped part to be closed, so that the second end of the material placing plate is inserted into the hook portion and is clamped with the hook portion.

[0014] Further, the connecting assembly comprises a first hinge shaft, the first hinge shaft is arranged on each of the sliding blocks, and the second end of the material placing plate is hinged to the first hinge shaft.

[0015] Further, the adjusting mechanism further comprises a plurality of first driving members, the first driving members are configured to provide driving force for the sliding of the sliding blocks.

[0016] Further, the preset flow path is a straight line shape before and after the folding of the material placing plate, and is an S shape; the air blowing drying box further comprises an air guide assembly, and the air guide assembly is configured to change the preset flow path.

[0017] Further, the air guide assembly comprises a plurality of baffle plates, the baffle plates are located in the box body, and the first end is rotationally arranged on the box body, and the second end is suspended; the upper part of the uppermost tray and the upper part of the lowermost tray are provided with one baffle plate, and one of the baffle plates is configured to block the hot air from entering the box body, and the other baffle plate is configured to block the hot air from exiting the box body; the upper part of each tray except the uppermost tray and the lowermost tray is provided with two baffle plates, and the two baffle plates of the same layer are respectively configured to block the hot air from entering the box body and blocking the hot air from exiting the box body; the folding directions of the material placing plates on adjacent trays are opposite; a plurality of through holes are arranged on each tray, and the through holes and the folded material placing plates on the same tray are arranged in a staggered manner, and the through holes on adjacent trays are arranged in a staggered manner.

[0018] Further, the air guide assembly further comprises a plurality of second driving members, and the second driving members are configured to provide driving force for the rotation of the baffle plates.

[0019] Further, after the material placing plate is folded, the hot air flows from top to bottom.

[0020] Further, the box body is further provided with an observation window, and the observation window is configured to observe the drying condition of the powdery material.

[0021] The beneficial effects of the present application are:

[0022] The present application relates to a blast drying oven, by arranging a material placing plate and an adjusting mechanism matched therewith, in the process of drying the powdery material, when the powdery material becomes relatively dry, the material placing plate is adjusted to be folded into a second corrugated shape by the adjusting mechanism, since the second corrugated shape has a smaller period and a higher wave crest than the first corrugated shape, when the material placing plate is deformed, the powdery material will move to the wave trough and be turned over, so that the relatively wet part inside is exposed and can be dried by the hot air, which is beneficial to improve the drying uniformity and drying efficiency; after the material placing plate is deformed, the material placing plate has a plurality of wave crests, the existence of the wave crests can block the hot air from directly blowing the powdery material, which is beneficial to reduce the scattering of the powdery material, thereby avoiding the method of covering a filter paper or aluminum foil with small holes above the powdery material, which not only ensures the direct contact efficiency between the hot air and the powdery material, but also ensures the air exchange speed, so that the water vapor around the powdery material can be quickly discharged, the drying time is shortened, and the drying efficiency is improved.

[0023] Further, by setting the preset flow path as S-shaped after the material placing plate is folded, in the process of drying the powder material, on one hand, by prolonging the residence time of the hot air in the box body, the heat exchange degree between the hot air and the powder material is improved; on the other hand, by increasing the turning angle of the hot air, the powder material carried by the hot air can be separated, and the floating of the powder material is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective structural schematic diagram of the blast drying oven provided by the embodiment of the present application is shown in the figure.

[0025] Figure 2 A sectional structural schematic diagram of the blast drying oven provided by the embodiment of the present application is shown in the figure.

[0026] Figure 3 A front view structural schematic diagram of the blast drying oven when the hot air flows along the preset flow path in a straight line is shown in the figure.

[0027] Figure 4 A front view structural schematic diagram of the blast drying oven when the hot air flows along the preset flow path in a straight line is shown in the figure. Figure 3 A sectional view along the direction of A-A is shown in the figure.

[0028] Figure 5 A front view structural schematic diagram of the blast drying oven when the hot air flows along the preset flow path in an S shape is shown in the figure.

[0029] Figure 6 A perspective structural schematic diagram of the blast drying oven without the box body and the hot air fan is shown in the figure.

[0030] Figure 7 A perspective structural schematic diagram of the blast drying oven when the material placing plate is in the first corrugated form and the tray and the sliding block are assembled is shown in the figure.

[0031] Figure 8 A top view structural schematic diagram of the blast drying oven when the material placing plate is in the first corrugated form and the tray and the sliding block are assembled is shown in the figure.

[0032] Figure 9 A top view structural schematic diagram of the blast drying oven when the material placing plate is in the first corrugated form and the tray and the sliding block are assembled is shown in the figure. Figure 8 A sectional view along the direction of B-B is shown in the figure.

[0033] Figure 10 A sectional view along the direction of B-B is shown in the figure. Figure 9 A local enlarged structural schematic diagram at Y is shown in the figure.

[0034] Figure 11 A perspective structural schematic diagram of the blast drying oven when the material placing plate is in the second corrugated form and the tray and the sliding block are assembled is shown in the figure.

[0035] Figure 12The placing plate of the blast drying oven provided by the embodiment of the present application is in the second corrugated form and the cross-sectional structure schematic view of the tray and the slider assembly;

[0036] Figure 13 For Figure 12 The local enlarged structure schematic view at Z.

[0037] Among them:

[0038] 1, the box; 101, the opening; 102, the box door; 103, the first cavity; 104, the second cavity; 105, the third cavity; 106, the fourth cavity; 1061, the air guide opening; 1062, the first air outlet; 107, the placing rack; 1071, the socket; 108, the observation window;

[0039] 2, the hot air blower;

[0040] 3, the tray; 301, the third hinge shaft; 302, the magnetic strip; 303, the blocking strip; 304, the magnetic block;

[0041] 4, the placing plate; 401, the sub-plate; 402, the second hinge shaft; 403, the anti-drop layer;

[0042] 501, the slider; 502, the connecting assembly; 5021, the hook part; 5022, the elastic sheet; 503, the driving cylinder;

[0043] 601, the wind shield; 602, the through hole; 603, the driving motor. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the present application clearer and more understandable, the following will further describe the present application through embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0045] The serial numbers of the components in this paper, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. And the "connection" and "coupling" in this paper include direct and indirect connection (coupling) without special instructions. In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" 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 therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. The first feature is "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0047] The embodiments of the present application will be described below with reference to Figures 1 to 13 The embodiments of the present application will be described below with reference to

[0048] Specifically, the air drying oven is provided with a box body 1, an opening 101 is formed on the front side wall of the box body 1, and a box door 102 is hinged on the front side wall of the box body 1, and the box door 102 is configured to close or open the opening 101; a first cavity 103 and a second cavity 104 are formed inside the box body 1, the first cavity 103 and the second cavity 104 are arranged horizontally along the left-right direction, and the first cavity 103 is located on the left side of the second cavity 104, a third cavity 105 is formed on the right inner side wall of the first cavity 103, the third cavity 105 and the first cavity 103 are communicated, and a hot air blower 2 is arranged at the communication position, and the hot air blower 2 is configured to blow hot air from left to right, the hot air is air with a preset temperature, and the preset temperature is greater than the temperature of the powdery material, so as to facilitate drying the powdery material, an air inlet is formed on the left side wall of the first cavity 103, the air inlet can be a grid structure, and the first cavity 103 is communicated with the outside through the air inlet, so as to facilitate introducing cold air from the outside to the hot air blower 2; a fourth cavity 106 is formed on the left inner side wall of the second cavity 104, a wind guide 1061 is formed on the left side wall of the fourth cavity 106, the wind guide 1061 can be a grid structure, the fourth cavity 106 is communicated with the third cavity 105 through the wind guide 1061, so as to facilitate receiving the hot air blown by the hot air blower 2; a first air outlet 1062 is formed on the right side wall of the fourth cavity 106, the fourth cavity 106 is communicated with the second cavity 104 through the first air outlet 1062, a second air outlet is formed on the right side wall of the second cavity 104, and the second cavity 104 is communicated with the outside through the second air outlet, so as to facilitate discharging the hot air to the outside.

[0049] Two placing racks 107 are arranged on the left inner side wall and the right inner side wall of the fourth cavity 106, the two placing racks 107 on the same side wall are arranged in the front-rear direction, the placing racks 107 on different side walls are arranged correspondingly, the placing rack 107 is in a strip structure and extends in the vertical direction, each placing rack 107 has a plurality of sockets 1071, and the plurality of sockets 1071 on the same placing rack 107 are arranged at equal intervals in the vertical direction; a plurality of trays 3 are inserted at the four sockets 1071 on the same layer, the trays 3 are arranged in the vertical direction, the tray 3 is horizontally arranged, and the top of the tray 3 is used for placing the powdery material. Exemplarily, the number of the trays 3 can be three.

[0050] Initially, the cabinet door 102 is in a closed state.

[0051] In use, first, the cabinet door 102 is opened, then the tray 3 is taken off from the placing rack 107, then the powdery material is placed on the top of the tray 3, and then the tray 3 is placed back on the placing rack 107; then the process of taking off the tray 3-placing the powdery material-placing the tray 3 is repeated until the top of all the trays 3 is placed with the powdery material, and then the cabinet door 102 is closed.

[0052] Then the hot air fan 2 is started, the hot air fan 2 continuously sucks the cold air outside into the first cavity 103 through the air inlet, then heats it, and blows it into the fourth cavity 106 through the air guide opening 1061 to dry the powdery material, and then sequentially discharges to the outside through the first air outlet 1062 and the second air outlet.

[0053] However, the powdery material is small in particle size and light in quality, and when the air blowing drying cabinet is working, the continuously flowing hot air is easy to have a strong carrying effect on the powdery material, causing the powdery material to separate from the tray 3. This phenomenon can cause multiple problems: on the one hand, the loss of the powdery material directly affects the accuracy of subsequent experimental data or the stability of the production process; on the other hand, the scattered powder can pollute the inside of the cabinet 1, and long-term accumulation can also be attached to the surface of the hot air fan 2, affecting the blowing amount, or covering the temperature sensor, causing the equipment to detect the temperature inside the cabinet 1 to deviate, thereby interfering with the temperature control precision, and posing a potential threat to the normal operation of the equipment.

[0054] To alleviate this problem, the prior art often uses a method of covering the powdery material with a filter paper or aluminum foil with small holes. Although this method can reduce the probability of powdery material being carried away by the airflow through physical barriers, it has obvious disadvantages: the filter paper or aluminum foil itself will hinder the direct contact between hot air and powdery material, reducing the heat transfer efficiency; at the same time, although the small holes on it provide a channel for air exchange, the limitation of hole diameter and distribution density will significantly slow down the air flow speed, causing the water vapor evaporated around the powdery material to be unable to be discharged in time, prolonging the drying period and significantly reducing the drying efficiency, which is difficult to meet the requirements of scenes with high requirements for drying speed and uniformity.

[0055] Based on this, in the blast drying oven provided in the embodiments of the present application, a material placing plate 4 is arranged on the top of each tray 3, the material placing plate 4 has a plurality of sub-plates 401, the plurality of sub-plates 401 are arranged along the left-right direction, adjacent sub-plates 401 are connected by a second hinge shaft 402, the second hinge shaft 402 extends horizontally along the front-rear direction, so that the material placing plate 4 can be folded along the left-right direction and has a corresponding first corrugated shape and a second corrugated shape before and after folding, as shown in Figure 9 , the material placing plate 4 has a first period and a first wave peak height, as shown in Figure 12 , the material placing plate 4 has a second period and a second wave peak height, the second period is smaller than the first period, and the second wave peak height is greater than the first wave peak height; a third hinge shaft 301 is arranged on each tray 3, the third hinge shaft 301 is arranged on the left side and is parallel to the second hinge shaft 402, and the material placing plate 4 is hingedly connected to the left end of the leftmost sub-plate 401 and the third hinge shaft 301 during installation, so as to serve as the basis for folding the material placing plate 4; a drop prevention layer 403 is fixed on the top of the plurality of sub-plates 401 of the same material placing plate 4, the left end of the drop prevention layer 403 is fixed on the tray 3 by bolts, the drop prevention layer 403 is a paper-like structure and is used to place the powdery material, which not only avoids the powdery material from falling off from the connection between the sub-plate 401 and the second hinge shaft 402 to the tray 3, causing waste, but also avoids the powdery material from being clamped in the connection between the sub-plate 401 and the second hinge shaft 402, affecting the hinge connection between the sub-plate 401 and the second hinge shaft 402.

[0056] The magnetic strip 302 is embedded at the bottom of the front and rear sidewalls of the tray 3, horizontally extends along the left-right direction, and is magnetically connected with the second hinge shaft 402 numbered with even numbers from left to right. The blocking strip 303 is sleeved at the top of the front and rear sidewalls of the tray 3, is parallel to the magnetic strip 302, and can form a stop cooperation with the second hinge shaft 402 numbered with odd numbers from left to right, so as to limit the wave crest height when the material placing plate 4 forms the second corrugated shape, and ensure that the included angles between adjacent V-shaped parts are equal when the material placing plate 4 forms the second corrugated shape, thereby ensuring that the storage capacities of the V-shaped parts are consistent, avoiding that the storage capacity is too large, the powder material stored is not easy to be completely dried, and the drying uniformity is affected, and avoiding that the storage capacity is too small, the powder material stored is easy to be taken away by hot air, and the accuracy of subsequent experiments or production is affected. The height of the third hinge shaft 301 is flush with the height of the magnetic strip 302, so as to ensure the folding stability of the material placing plate 4.

[0057] In order to facilitate the switching of the folding shape of the material placing plate 4, the air drying oven is further provided with an adjusting mechanism. The adjusting mechanism is provided with a plurality of sliding blocks 501 and a plurality of connecting components 502. The sliding blocks 501 are arranged correspondingly with the tray 3. Taking one of the sliding blocks 501 as an example, the sliding block 501 is initially embedded in the right sidewall of the tray 3 and can slide horizontally along the left-right direction. Each sliding block 501 is connected with the right end of the material placing plate 4 through the connecting component 502. The connecting component 502 can be provided with a bent hook part 5021 and a spring 5022. The bent hook part 5021 is arranged on each sliding block 501 and is in the shape of an inverted hook with the hook end facing left. The spring 5022 is arranged at the bottom of the two sub-plates 401 on the right side and is in the shape of a V with the large end facing up. Under the elastic force of the spring 5022, the V-shaped part formed by the two sub-plates 401 on the right side has a tendency to reduce the included angle, so that the right end of the sub-plate 401 on the right side of the material placing plate 4 is inserted into the bent hook part 5021 and is clamped with the bent hook part 5021. In order to provide driving force for the sliding of the sliding block 501, the adjusting mechanism is provided with a plurality of first driving members. The first driving members are arranged correspondingly with the sliding blocks 501. The first driving member can be provided with a driving cylinder 503. Taking one of the driving cylinders 503 as an example, it is arranged on the right inner sidewall of the second cavity 104, the output shaft horizontally faces left, and is fixed on the sliding block 501, so as to drive the sliding block 501 to slide.

[0058] It can be understood that the driving cylinder 503 can be any one of a hydraulic cylinder, a pneumatic cylinder or an electric cylinder.

[0059] Initially, the material placing plate 4 is in the first corrugated shape as shown in FIG. 1. Figure 9 The powder material is in a wet state.

[0060] After the powder material is placed on the anti-drop layer 403 and the box door 102 is closed, the hot air blower 2 is started to blow hot air to dry the powder material. Since the powder material is initially in a wet state, the adhesion between them is large, making it difficult to be blown away. When the powder material is relatively dry, the adhesion between them is small. At this time, the drive cylinder 503 is started, the output shaft of the drive cylinder 503 is extended, and the slider 501 is driven to move left. The slider 501 drives the rightmost dividing plate 401 to move left through the hook part 5021 and the clamping belt between the rightmost dividing plate 401. The rightmost dividing plate 401 drives the material plate 4 to fold from right to left through the hinge cooperation between the dividing plates 401. When the second-to-last second hinge shaft 402 from left to right and the stop bar 303 form a stop cooperation, their height remains unchanged. With the continuous movement of the slider 501, the second hinge shaft 402 from right to left forms a stop cooperation with the stop bar 303 in turn, and finally the material plate 4 forms a second wave shape, and the included angle between adjacent V-shaped parts is equal.

[0061] When the material plate 4 is in the second wave shape, compared with the first wave shape, the wave period is smaller and the wave peak height is higher, so on the one hand, the powder material will move to the wave valley area due to the change of the shape of the material plate 4, and then the natural turning of the powder material is caused. This turning process can effectively break the state difference between the surface and the inside of the powder material, fully expose the wet part originally wrapped inside to the hot air, ensure that the heat transfer uniformly acts on the whole powder material, and fundamentally improve the drying uniformity. On the other hand, the higher wave peak forms a physical barrier that can directly block the direct blowing of hot air on the powder material, reduces the carrying capacity of the airflow on the light powder, significantly reduces the loss of the powder material, and avoids affecting the system operation stability due to the attachment of the powder to the inside of the box 1 or the equipment elements.

[0062] At the same time, the traditional filter paper or aluminum foil covering method is avoided, so as to avoid the obstruction of the covering to the hot air flow: the hot air can directly contact the surface of the powder material, the airflow exchange speed is not limited by the small hole diameter, the water vapor evaporated around the powder material can be quickly discharged, the drying period is greatly shortened, and the drying efficiency is substantially improved while reducing the loss of the powder material.

[0063] In other embodiments, the connecting assembly 502 can also be provided with a first hinge shaft, and the first hinge shaft is provided on each slider 501. The first hinge shaft and the third hinge shaft 301 are parallel, and the material plate 4 is rotatably sleeved on the first hinge shaft at the right end of the rightmost dividing plate 401 during installation to form a hinge cooperation.

[0064] During use, when the powder material is relatively dry, the adhesion between them is small, at this time, the driving cylinder 503 is started, the output shaft of the driving cylinder 503 is extended, and the slider 501 is driven to move leftward, the slider 501 is driven to move leftward through the third hinge shaft 301 and the hinge matching between the rightmost partition plate 401, and the rightmost partition plate 401 is driven to move leftward through the hinge matching between the partition plates 401, and the material plate 4 is folded from right to left.

[0065] In other embodiments, the second hinge shaft 402 can also be replaced by a chute, and the chute is arranged to extend horizontally along the left-right direction, and the end of the second hinge shaft 402 is slidably inserted into the chute to achieve sliding limiting of the second hinge shaft 402.

[0066] In other embodiments, in order to further improve the drying effect of the powder material, the preset flow path is set to be linear and S-shaped before and after the material plate 4 is folded. In this way, when the powder material is in a relatively wet initial stage, the preset flow path is set to be linear, at this time, the hot air is uniformly distributed in the box 1 along the straight line direction, the air flow speed and the temperature field stability are higher, which can ensure that the powder materials on different trays 3 receive the same amount of heat transfer in the same time, so as to ensure that the powder materials in each area reach the "relatively dry" state threshold synchronously, and avoid the imbalance of the efficiency in the subsequent processing stage due to the difference in local drying progress.

[0067] When the powder material enters a relatively dry stage, the preset flow path is switched to S-shaped, so as to increase the number of turning points of the hot air flow in the flow process: on the one hand, the air flow speed at the turning point naturally decays, the wind power weakens, which can reduce the direct impact force on the light powder and reduce the probability of the material being wrapped by the air flow; on the other hand, the centrifugal force generated by the air flow when turning can promote the separation of a small amount of powder carried by the air flow, so that the powder is more easily separated from the air flow and settled back to the material plate 4, further reducing the loss of floating. At the same time, the S-shaped flow path prolongs the residence time of the hot air in the box 1, improves the heat utilization rate, and cooperates with the optimization of the corrugated form of the material plate 4 to reduce the loss of material while ensuring the drying efficiency.

[0068] In order to facilitate the switching of the preset flow path, the folding directions of the material plates 4 on the adjacent trays 3 are opposite, a plurality of through holes 602 are arranged on each tray 3, the through holes 602 on the same tray 3 are arranged in a staggered manner with the folded material plate 4, and the through holes 602 on the adjacent trays 3 are arranged in a staggered manner, so that an S-shaped flow path can be formed between the trays 3 after the material plates 4 are folded. Taking the case that the number of trays 3 is three as an example, the through holes 602 on the uppermost tray 3 are located on the right side, and the through holes 602 on the lowermost tray 3 are located on the left side. Figure 2As shown, the fixing end of the anti-drop layer 403 of the uppermost material placing plate 4 is located on the left side, the slider 501 on the uppermost layer is located on the right side, ensuring that the uppermost material placing plate 4 can be folded from right to left; the through hole 602 on the middle tray 3 is located on the left side, the fixing end of the anti-drop layer 403 of the middle material placing plate 4 is located on the right side, the slider 501 on the middle layer is located on the left side, ensuring that the middle material placing plate 4 can be folded from left to right; the through hole 602 on the lowermost tray 3 is located on the right side, the fixing end of the anti-drop layer 403 of the lowermost material placing plate 4 is located on the left side, the slider 501 on the lowermost layer is located on the right side, ensuring that the lowermost material placing plate 4 can be folded from right to left.

[0069] The air blowing drying box is further provided with an air guide assembly, which comprises a plurality of air baffles 601 located in the fourth cavity 106 and rotatably arranged at the first end on the box body 1 and suspended at the second end, so as to block the hot air from entering or leaving the fourth cavity 106. Taking the case of three trays 3, the initial preset flow path is in the shape of a straight line, as shown in Figure 2 As shown, the upper right of the uppermost tray 3 is provided with an air baffle 601, the right end of which is rotatably arranged on the rear side wall of the box body 1 and the left end of which is suspended, and the plate surface of the air baffle 601 is horizontally arranged to avoid affecting the passing of hot air; the upper left of the lowermost tray 3 is provided with an air baffle 601, the left end of which is rotatably arranged on the rear side wall of the box body 1 and the right end of which is suspended, and the plate surface of the air baffle 601 is horizontally arranged to avoid affecting the passing of hot air; the upper left and upper right of the middle tray 3 are both provided with an air baffle 601, wherein the left end of the air baffle 601 on the upper left is rotatably arranged on the rear side wall of the box body 1 and the right end is suspended, and the plate surface of the air baffle 601 is horizontally arranged to avoid affecting the passing of hot air; the right end of the air baffle 601 on the upper right is rotatably arranged on the rear side wall of the box body 1 and the left end is suspended, and the plate surface of the air baffle 601 is horizontally arranged to avoid affecting the passing of hot air.

[0070] When the powder material is relatively dry, all the air baffles 601 are rotated to the vertical state, as shown in Figure 5As shown, at this time, the wind shield 601 located in the uppermost layer blocks the hot air from discharging the fourth cavity 106, the wind shield 601 located in the middle layer on the left blocks the hot air from entering the fourth cavity 106, the wind shield 601 located in the middle layer on the right blocks the hot air from discharging the fourth cavity 106, and the wind shield 601 located in the lowermost layer blocks the hot air from entering the fourth cavity 106, so as to force the hot air to only be able to enter the fourth cavity 106 from above the tray 3 located in the uppermost layer, then pass through the through hole 602 on the tray 3 located in the uppermost layer, enter the area between the tray 3 located in the uppermost layer and the tray 3 located in the middle layer, then pass through the through hole 602 on the tray 3 located in the middle layer, enter the area between the tray 3 located in the middle layer and the tray 3 located in the lowermost layer, and finally discharge the fourth cavity 106 from the first air outlet 1062 located in the lowermost layer.

[0071] At this time, the hot air flows from top to bottom, thereby forming a synergistic effect with the second corrugated shape of the material placing plate 4: on the one hand, the hot air penetrates into the area of each tray 3 layer by layer under the assistance of gravity, and when flowing through the through hole 602 between the adjacent trays 3, the airflow will accurately act on the valley and peak areas of the material along the corrugated gap due to the misalignment of the through hole 602 and the folded material placing plate 4, so as to ensure that the hot air is in full contact with the turned-over material and improve the heat exchange efficiency; on the other hand, the airflow direction from top to bottom is complementary to the peak blocking structure of the material placing plate 4, and the peak can effectively buffer the direct impact of the airflow on the powdery material, and the airflow flowing layer by layer gradually decays after passing through each layer of trays 3, further reducing the carrying capacity of the drying material and reducing the loss of drifting. At the same time, this directional flow mode cooperates with the S-shaped flow path design to prolong the residence time of the hot air in the box 1, so that the water vapor can be orderly discharged along the airflow, avoiding the accumulation of local water vapor to affect the drying effect, thereby further strengthening the anti-drifting control of the powdery material on the basis of ensuring uniform drying.

[0072] It should be noted that under the blocking of the wind shield 601, the powdery material carried by the hot air can also hit the wind shield 601, thereby realizing separation and further reducing the drifting of the powdery material.

[0073] In order to realize the rotation of the wind shield 601, the air guide assembly can be further provided with a plurality of second driving members corresponding to the rotating end of the wind shield 601, and the second driving member can be provided as a driving motor 603.

[0074] In other embodiments, in order to realize the rotation of the wind shield 601, a manual rotation of the rotation end of the wind shield 601 can also be provided; in order to facilitate the locking of the position of the wind shield 601 before and after rotation, the wind shield 601 at the uppermost position can be magnetically connected with the box body 1, so that the wind shield 601 at the uppermost position can be kept in a horizontal state, avoiding affecting the passing of hot air; the other wind shields 601 can be magnetically matched with the magnetic strips 302 on the upper tray 3, so that the other wind shields 601 can be kept in a horizontal state, avoiding affecting the passing of hot air; the blocking strip 303 and the placing frame 107 have magnetism, so that the wind shield 601 can be kept in a vertical state, blocking the hot air from entering the fourth cavity 106 or blocking the hot air from discharging from the fourth cavity 106.

[0075] In other embodiments, a wind shield 601 can be provided at the upper left of the uppermost tray 3, the left end of which is rotatably arranged on the rear side wall of the box body 1, and the right end is suspended; a wind shield 601 can be provided at the upper right of the lowermost tray 3, the right end of which is rotatably arranged on the rear side wall of the box body 1, and the left end is suspended, so that the hot air flows from bottom to top.

[0076] In other embodiments, in order to realize the viewing of the drying condition of the powdery material, an observation window 108 is embedded on the box door 102, and the observation window 108 is made of transparent material.

[0077] In other embodiments, in order to improve the stability of the material placing plate 4 in the first corrugated state, the top of the tray 3 can be provided with a corrugated structure, and the extension direction is consistent with the folding direction of the material placing plate 4, both extending horizontally along the left-right direction; initially, the second hinge shaft 402 located at the even number position from left to right is located at the wave trough of the corrugated structure, and under the limitation of the wave trough structure, it is difficult to move along the left-right direction, so as to facilitate the material placing plate 4 to keep the first corrugated state.

[0078] In other embodiments, in order to improve the stability of the material placing plate 4 in the first corrugated state, a magnetic block 304 can also be fixedly arranged at the top of each tray 3, the magnetic block 304 is arranged away from the fixed end of the anti-falling layer 403, and can be magnetically matched with the sub-plate 401 of the material placing plate 4 farthest from the third hinge shaft 301, so as to lock the position of the sub-plate 401, thereby facilitating the material placing plate 4 to keep the first corrugated state.

[0079] The technical features of the above embodiments can be combined arbitrarily, in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0080] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application.

Claims

1. A forced air drying cabinet characterized by, The forced air drying oven comprises: a box body; a heat source configured to input hot air into the box body, the hot air flowing along a preset flow path in the box body and then being discharged from the box body; a plurality of trays located in the box body and arranged in a vertical direction, each of the trays being provided with a material placing plate at a top portion of the tray, the material placing plate being configured to place powder materials and being foldable, the material placing plate having a first corrugated shape and a second corrugated shape before and after being folded, the material placing plate having a first period and a first wave crest height in the first corrugated shape, the material placing plate having a second period and a second wave crest height in the second corrugated shape, the second period being smaller than the first period, and the second wave crest height being greater than the first wave crest height; an adjusting mechanism configured to adjust the shape of the material placing plate; a first end of the material placing plate in a folding direction of the material placing plate being hinged to the tray, the adjusting mechanism comprising a plurality of sliding blocks, the sliding blocks being capable of sliding in the folding direction of the material placing plate, and a second end of the material placing plate in the folding direction of the material placing plate being connected to the sliding blocks through a connecting assembly; the connecting assembly comprising a hook portion and a spring, the hook portion being provided on each of the sliding blocks, and the spring being provided on a bottom portion of a V-shaped portion closest to the second end of each of the material placing plates, the spring being configured to close the V-shaped portion so that the second end of the material placing plate is inserted into the hook portion and is clamped to the hook portion; the connecting assembly comprising a first hinge shaft, the first hinge shaft being provided on each of the sliding blocks, and the second end of the material placing plate being hinged to the first hinge shaft; the adjusting mechanism further comprising a plurality of first driving members, the first driving members being configured to provide a driving force for the sliding of the sliding blocks; the preset flow path being a straight line shape before the material placing plate is folded and an S shape after the material placing plate is folded, and the forced air drying oven further comprising an air guide assembly, the air guide assembly being configured to change the preset flow path; the air guide assembly comprising a plurality of air baffle plates, the air baffle plates being located in the box body, a first end of each of the air baffle plates being rotatably provided on the box body, and a second end of each of the air baffle plates being suspended, one of the air baffle plates being provided above the uppermost tray and above the lowermost tray, and being configured to block the hot air from entering the box body, another of the air baffle plates being configured to block the hot air from being discharged from the box body, two of the air baffle plates being provided above each of the trays other than the uppermost tray and the lowermost tray, the two air baffle plates being configured to block the hot air from entering the box body and blocking the hot air from being discharged from the box body, respectively, folding directions of the material placing plates on adjacent trays being opposite to each other, a plurality of through holes being provided on each of the trays, the through holes on the same tray being arranged in a staggered manner with the folded material placing plate, and the through holes on adjacent trays being arranged in a staggered manner; 2. The forced air drying oven of claim 1, wherein, the air guide assembly further comprising a plurality of second driving members, the second driving members being configured to provide a driving force for the rotation of the air baffle plates.

3. The forced air drying oven of claim 1, wherein, the hot air flowing from top to bottom after the material placing plate is folded.

4. The forced air drying oven of claim 1, wherein, The box is further provided with an observation window configured to enable viewing of the drying condition of the powdered material.

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