Drying device

Abstract

The invention discloses a drying device which comprises at least two drying boxes arranged in series, each drying box is provided with a feeding end and a discharging end, the feeding end of the first drying box is used for loading materials to be dried, and the discharging end of the last drying box is used for discharging dried materials. The feeding ends of the other drying boxes can communicate with the discharging end of the previous drying box, so that to-be-dried materials can sequentially pass through the multiple drying boxes and are dried for multiple times; and in the arrangement direction from the first drying box to the last drying box, the drying temperature of the drying boxes changes. Therefore, by means of the drying box structure designed in a multi-stage series connection mode, efficient drying treatment on the to-be-dried materials can be achieved, the drying efficiency is improved, and the original quality of the to-be-dried materials is effectively protected.

Description

Technical Field

[0001] The present invention relates to the technical field of material drying, and more specifically, the present invention relates to a drying device. Background Art

[0002] In the production processes such as industry and agriculture, drying the material is a crucial step. As a key device to achieve this goal, the performance and efficiency of the drying oven directly affect the product quality, production cost, and overall production efficiency.

[0003] Currently, most drying ovens are internally provided with drums, and the drying of the material to be dried is achieved by the rotation of the drums. According to different drying requirements, a drying oven with a different drying temperature is selected. However, this single matching makes the drying efficiency of the drying oven not very ideal. Summary of the Invention

[0004] The purpose of the present invention is to provide a new technical solution for a drying device.

[0005] According to one aspect of the present invention, there is provided a drying device, comprising:

[0006] At least two drying ovens arranged in series, each drying oven having a feed end and a discharge end, the feed end of the first drying oven being used for loading the material to be dried, the discharge end of the last drying oven being used for discharging the dried material, and the feed ends of the remaining drying ovens being capable of communicating with the discharge end of the previous drying oven, so that the material to be dried can sequentially pass through multiple drying ovens and be dried multiple times;

[0007] And, along the arrangement direction from the first drying oven to the last drying oven, the drying temperature of the drying oven changes.

[0008] Optionally, along the arrangement direction from the first drying oven to the last drying oven, the drying temperature of the drying oven gradually decreases.

[0009] Optionally, multiple drying ovens are stacked and arranged vertically, and the discharge end of the drying oven located above communicates with the feed end of the adjacent drying oven located below.

[0010] Optionally, multiple drying ovens are arranged side by side horizontally.

[0011] Optionally, it further comprises a feeding part, one end of the feeding part communicates with the feed end of the drying oven, and the other end of the feeding part communicates with the discharge end of the previous drying oven, and the feeding part is used to realize the transfer of the material to be dried.

[0012] Optionally, one end of the feeding part is detachably connected to the feed end of the drying oven, and the other end of the feeding part is detachably connected to the discharge end of the previous drying oven.

[0013] Optionally, the number of the drying boxes is not less than three. Some of the drying boxes are arranged in a stack along the vertical direction, and some of the drying boxes are arranged side by side along the horizontal direction.

[0014] Optionally, a first sealing plate is provided at each feeding end. The first sealing plate is movably connected to the feeding end of the drying box and can close or open the feeding port.

[0015] A second sealing plate is provided at each discharging end. The second sealing plate is movably connected to the discharging end of the drying box and can close or open the discharging port.

[0016] Optionally, at least two drying pipes are further included. A drying gas flows in each drying pipe. Each drying box has an air inlet end and an air outlet end. Each drying pipe is connected to one of the air inlet ends so as to be able to transmit the drying gas to the drying box, and the air outlet end is used for discharging the humid gas.

[0017] Optionally, an adjusting part and a first detecting part which are signal-connected are further included. The adjusting part and the first detecting part are arranged in the drying pipe. The first detecting part is used for detecting the temperature information or the air volume information of the drying pipe, and the adjusting part can adjust at least one of the flow rate and the flow velocity of the drying gas based on the information.

[0018] Optionally, a second detecting part is further included. The second detecting part is arranged in the drying box and is used for detecting the drying temperature of the drying box or the mass difference of the material to be dried before and after drying.

[0019] And / or, a heating part is arranged in at least part of the drying boxes, and the material to be dried can be dried by the heating part in the drying box.

[0020] Optionally, each drying box includes a box body and a roller part arranged on the box body. The roller part includes a roller shaft, a roller body and a roller sliding cover. The roller sliding cover and the roller body are respectively sleeved on the roller shaft. The roller body has a first opening, and the roller body is communicated with the box body through the first opening.

[0021] The roller sliding cover can rotate along the roller shaft to close or open the first opening. When the roller sliding cover closes the first opening, the roller sliding cover forms a transmission connection with the roller body; when the roller sliding cover opens the first opening, the roller sliding cover is disengaged from the transmission connection with the roller body.

[0022] One technical effect of the present invention is that:

[0023] The drying device includes at least two drying chambers arranged in series. Each drying chamber has a feed end and a discharge end. The feed end of the first drying chamber is used to load the material to be dried, and the discharge end of the last drying chamber is used to discharge the dried material. The feed ends of the remaining drying chambers can be connected to the discharge end of the previous drying chamber, so that the material to be dried can pass through multiple drying chambers in sequence and be dried multiple times. Moreover, along the arrangement direction from the first drying chamber to the last drying chamber, the drying temperature of the drying chamber changes.

[0024] In this way, through the drying chamber structure designed with multi-stage series connection, efficient drying treatment of the material to be dried can be achieved, which not only improves the drying efficiency but also effectively protects the original quality of the material to be dried. Compared with the traditional single-stage drying, this multi-stage drying method can more effectively remove the moisture in the material to be dried, especially when dealing with materials to be dried with high humidity or difficult to dry, the effect is particularly obvious.

[0025] Other features and advantages of the present invention will become clear through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings forming a part of the specification depict the embodiments of the present invention and, together with the specification, are used to explain the principles of the present invention.

[0027] Figure 1 is a schematic diagram of a drying chamber according to an embodiment of the present invention;

[0028] Figure 2 is a partial schematic diagram of a drying chamber according to an embodiment of the present invention;

[0029] Figure 3 is another partial schematic diagram of a drying chamber according to an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of a roller shaft according to an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of a roller part according to an embodiment of the present invention;

[0032] Figure 6 is another schematic diagram of a roller part according to an embodiment of the present invention;

[0033] Figure 7 is a partial cross-sectional view of a roller part according to an embodiment of the present invention;

[0034] Figure 8 is another schematic diagram of a roller part according to an embodiment of the present invention;

[0035] Figure 9 It is a schematic diagram of a first drying oven according to an embodiment of the present invention;

[0036] Figure 10 It is a schematic diagram of a second drying oven according to an embodiment of the present invention;

[0037] Figure 11 It is a schematic diagram of a first drying pipe according to an embodiment of the present invention;

[0038] Figure 12 It is a schematic diagram of a drying device according to an embodiment of the present invention;

[0039] Figure 13 It is a schematic diagram of another drying device according to an embodiment of the present invention.

[0040] Explanation of reference numerals:

[0041] 1. First drying assembly; 11. First drying pipe; 111. Pipe body; 1111. Inner pipe; 1112. Outer shell; 1113. Thermal insulation layer; 112. Heating element; 113. Heat dissipation element; 114. Temperature sensor; 12. First drying oven; 121. Oven body; 1213. First positioning member; 122. Drum part; 1221. Drum body; 12211. First opening; 12212. Protruding part; 1222. Drum sliding cover; 12221. Sliding cover plate; 12222. Sliding cover support; 1223. Drum shaft; 12231. Fourth opening; 12232. Air guiding member; 12233. Material guiding member; 1224. Transmission member; 12241. Gear; 12242. Dial; 12243. Dial pin; 1225. Reverse locking member; 1226. Elastic member; 1227. Support; 1228. Rotating sleeve; 123. First sealing plate; 124. First exhaust member; 13. First filter; 14. First fan;

[0042] 2. Hopper assembly; 21. First hopper; 22. Second hopper; 23. First weighing hopper; 24. Second weighing hopper;

[0043] 3. Driving part;

[0044] 4. Second drying assembly; 41. Second drying pipe; 42. Second drying oven; 421. Second exhaust member; 422. Second positioning member; 43. Second filter; 44. Second fan;

[0045] 5. Feeding part. Detailed implementation manners

[0046] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0047] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0048] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0049] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0050] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0051] The present invention provides a drying device which is suitable for drying various materials, such as granular, powdery or block materials in the food, chemical, pharmaceutical and other industries.

[0052] like Figures 1 to 3 , Figure 12 and Figure 13 As shown, the drying device provided by the present invention comprises:

[0053] At least two drying boxes are arranged in series, each of which has a feed end and a discharge end, the feed end of the first drying box is used to load the material to be dried, the discharge end of the last drying box is used to discharge the dried material, and the feed ends of the remaining drying boxes can be connected to the discharge end of the previous drying box, so that the material to be dried can pass through multiple drying boxes in sequence and be dried multiple times;

[0054] Furthermore, along the arrangement direction from the first drying box to the last drying box, the drying temperature of the drying box changes.

[0055] Specifically, the drying device of the present invention includes at least two drying boxes, for example, a first drying box 12 and a second drying box 42 as shown in the figure, and may also include three, four or even more drying boxes. These drying boxes are arranged in series, for example, arranged in series horizontally, or arranged in series vertically.

[0056] Each drying box is designed with a feed end and a discharge end, that is, a feed port and a discharge port, to facilitate the continuous input and output of materials.

[0057] As Figures 1 to 3 , Figure 12 and Figure 13 shown, the feeding end of the first drying oven, i.e., the first drying oven, is connected with an automatic feeding device for loading the materials to be dried. The drying temperature of this drying oven is usually set as the high-temperature zone in the whole drying process so as to quickly and efficiently remove a large amount of moisture in the materials to be dried.

[0058] The last drying oven, i.e., the last drying oven, serves as the end point of the drying process, and its discharging end is connected with a material unloading structure, such as a sliding door, a sluice gate or an automatic discharging device, etc. The drying temperature of this drying oven is usually relatively low, which is used to further remove the residual moisture and at the same time control the material temperature to the required temperature.

[0059] The remaining intermediate drying ovens are located between the first drying oven and the last drying oven, and the number of them can be adjusted according to the actual drying needs. The feeding end of each intermediate drying oven can be connected with the discharging end of the previous drying oven through a pipeline or a conveyor belt so as to ensure that the materials to be dried are transferred to the next drying stage, and thus the materials to be dried can be dried multiple times and the complex drying requirements of the materials to be dried can be met.

[0060] In this way, through the drying oven structure designed with multi-stage series connection, the efficient drying treatment of the materials to be dried can be realized, which not only improves the drying efficiency, but also effectively protects the original quality of the materials to be dried. In addition, through the application of intelligent control and energy-saving technologies, the economic and environmental protection performance of the drying device can be further improved.

[0061] In addition, the present invention designs two fewer drying ovens in series arrangement, so that the materials to be dried pass through multiple drying ovens in sequence for multiple drying. This multi-stage drying method can remove the moisture in the materials to be dried more effectively compared with the traditional single-stage drying, especially when dealing with materials to be dried with high humidity or difficult to dry, the effect is particularly obvious.

[0062] Among them, along the arrangement direction from the first drying oven to the last drying oven, the drying temperature of the drying oven can be set to gradually decrease, or can be set to gradually increase, or can be set to first decrease and then increase, or can be set to first increase and then decrease, which can adapt to different drying needs.

[0063] Among them, temperature sensors can be installed in each drying oven, and the temperature sensors can monitor and feedback the temperature information to the central control system in real time so as to automatically adjust the output of the heating element according to the preset program, thereby realizing the precise control of the drying temperature in the drying oven.

[0064] In addition, the moisture generated during the drying process can also be discharged through the exhaust system, and a dehumidification device or a condensation recovery system is equipped to reduce energy consumption and meet environmental protection requirements. Moreover, waste heat recovery technology can be combined to recover and reuse the heat energy in the moisture discharged from the drying oven, which can also improve the overall energy utilization efficiency of the drying device.

[0065] Optionally, along the arrangement direction from the first drying oven to the last drying oven, the drying temperature of the drying oven gradually decreases.

[0066] Specifically, along the series arrangement direction from the first drying oven to the last drying oven, that is, the transfer direction of the material to be dried, the drying temperature of each drying oven gradually decreases.

[0067] With this setting, in the first drying oven, the high-temperature drying gas can quickly increase the evaporation rate of water molecules inside the material and effectively remove most of the free water, thus achieving rapid and efficient drying of the material to be dried. As the material to be dried enters the subsequent intermediate drying ovens, the drying temperature gradually decreases, which helps the slow release of the bound water inside the material to be dried. At the same time, it can also prevent the material to be dried from deforming, cracking or even deteriorating due to sudden temperature changes. Finally, the material to be dried further removes the residual moisture in the last drying oven, and at the same time controls the material temperature to the required temperature.

[0068] This gradually decreasing temperature gradient design helps the material to be dried to be dried at an appropriate temperature in different stages, avoiding problems such as surface hardening of the material to be dried and difficulty in discharging internal moisture caused by high-temperature rapid drying, thus improving the drying quality. Moreover, multi-stage gentle drying can better retain the nutrients, aroma and color of the material to be dried, and is suitable for industries such as food and medicine with high requirements for drying quality.

[0069] Optionally, multiple drying ovens are stacked vertically, and the discharge end of the drying oven located above is communicated with the feed end of the adjacent drying oven located below.

[0070] As Figure 13 shown, by stacking multiple drying ovens vertically, the horizontal space of the drying device can be saved, making the entire drying device more compact. This is particularly important for production environments with limited space, which can maximize the use of existing site resources and reduce production costs.

[0071] In the vertically stacked layout, the material to be dried can be vertically transferred between two connected drying ovens by gravity or an internal conveying mechanism. Compared with horizontal conveying, vertical transportation is more direct in terms of path, reducing the complexity and time cost of transferring the material to be dried, and also saving driving force.

[0072] Among them, it is possible to set the discharge port of the drying oven located above to be opposite to the feed port of the adjacent drying oven located below, so that the discharge end of the drying oven located above is directly connected to the feed end of the adjacent drying oven located below; it is also possible to set up a connecting pipeline to connect the discharge end of the drying oven located above to the feed end of the adjacent drying oven located below through the connecting pipeline.

[0073] Optionally, the plurality of drying ovens are arranged side by side in the horizontal direction.

[0074] As Figure 12 shown, arranging a plurality of drying ovens side by side horizontally facilitates flexible configuration according to the actual situation of the production site. Whether it is a spacious environment or a space-constrained environment, it can be adapted by adjusting the number and spacing of the drying ovens to ensure the best space utilization rate.

[0075] A plurality of drying ovens arranged side by side horizontally can form a continuous material handling line. The material to be dried enters from the first drying oven, passes through a plurality of drying ovens in sequence for drying treatment, and finally exits from the last drying oven. This continuous production process helps to improve the drying efficiency and reduce the time cost of transporting the material to be dried. Moreover, the drying device can integrate various conveying systems, such as conveyor belts, vibrating feeders or screw conveyors, etc., to achieve automatic and continuous conveying of the material to be dried.

[0076] In addition, the horizontal layout of the plurality of drying ovens enables each drying oven to be exposed within the line of sight of the operator, facilitating daily observation and troubleshooting, and also facilitating maintenance and servicing work.

[0077] Optionally, it further includes a feed section 5. One end of the feed section 5 is connected to the feed end of the drying oven, and the other end of the feed section 5 is connected to the discharge end of the previous drying oven. The feed section 5 is used to transfer the material to be dried.

[0078] As Figure 12 shown, the feed section 5 includes but is not limited to a conveyor belt and a conveyor. The design of the feed section 5 enables the material to be dried to be directly and continuously transferred from the discharge end of the previous drying oven to the feed end of the next drying oven without interrupting the production process. This continuous and efficient material transfer method helps to improve the drying efficiency and reduce the time waste and energy consumption during the transfer of the material to be dried.

[0079] Among them, the feed section 5 can be equipped with precise metering and control devices to ensure that the weight of the material to be dried transferred each time is accurate. This is particularly important for industries that require strict control of the material input and drying process, such as food, pharmaceuticals, etc., and helps to ensure the quality and consistency of the final product.

[0080] In addition, the design of the feeding section 5 can be adjusted and optimized according to the characteristics and drying requirements of different materials to be dried. For example, for materials to be dried that are prone to sticking to the wall and clogging, special conveying mechanisms or surface treatments can be adopted to reduce friction and adhesion; for materials to be dried that are fragile and prone to deformation, a gentler conveying method can be used.

[0081] Optionally, one end of the feeding section 5 is detachably connected to the feeding end of the drying chamber, and the other end of the feeding section 5 is detachably connected to the discharging end of the previous drying chamber.

[0082] Specifically, it can be set that the feeding section 5 and the drying chamber are detachably connected by means of threaded connection, snap connection, etc., so as to facilitate the installation and disassembly of the feeding section 5 and the drying chamber, so that the feeding section 5 can be installed to expand the drying stage, or the feeding section 5 can be disassembled to reduce the drying stage, which is convenient to meet the complex drying requirements of the materials to be dried.

[0083] Optionally, the number of the drying chambers is not less than three, and some of the drying chambers are arranged in a stacked manner in the vertical direction, and some of the drying chambers are arranged side by side in the horizontal direction.

[0084] Specifically, it can be set that the drying device includes three, four or even more drying chambers to be able to meet different drying requirements. Among them, a plurality of the previous drying chambers can be arranged in a vertical stack, and the remaining drying chambers can be arranged horizontally; or a plurality of the previous drying chambers can be arranged in a vertical stack, a plurality of the middle drying chambers can be arranged horizontally, and a plurality of the subsequent drying chambers can be arranged in a vertical stack and other different combined arrangement methods.

[0085] Optionally, a first sealing plate 123 is provided at each feeding end, and the first sealing plate 123 is movably connected to the feeding end of the drying chamber and can close or open the feeding port;

[0086] A second sealing plate is provided at each discharging end, and the second sealing plate is movably connected to the discharging end of the drying chamber and can close or open the discharging port.

[0087] As Figure 2 and Figure 9 shown, the first sealing plate 123 can be slidably or rotatably connected to the feeding end of the drying chamber, that is, the second opening, so that the first sealing plate 123 can open the second opening, that is, the feeding port, to load the materials to be dried, or the first sealing plate 123 can close the second opening, that is, the feeding port, to reliably dry the materials to be dried.

[0088] Similarly, a second sealing plate can also be slidably or rotatably connected to the discharge end of the drying oven, i.e., the third opening, so that the second sealing plate can open the third opening, i.e., the discharge port, to discharge the dried material, or the second sealing plate can close the third opening, i.e., the discharge port, to reliably dry the material to be dried. Among them, the sliding connection between the first sealing plate 123 and the second sealing plate can be realized by a guide rail and slider, and the rotational connection can be realized by a meshing gear set.

[0089] Optionally, it further includes at least two drying tubes. Dry gas flows in each drying tube. Each drying oven has an inlet end and an outlet end. Each drying tube is connected to one inlet end to be able to transmit the dry gas to the drying oven, and the outlet end is used to discharge the humid gas.

[0090] As Figure 12 and Figure 13 shown in the figure, dry gas flows in the first drying tube 11. The dry gas includes but is not limited to normal temperature air, heated air, and inert gas, and is used to provide the heat source or inert environment required for drying. One end of the first drying tube 11 is connected to a heat source such as a heater or a blower, etc., and the other end is connected to the first drying oven 12 to ensure that the dry gas can be smoothly transmitted into the first drying oven 12. The connection between the first drying tube 11 and the first drying oven 12 enables the first drying assembly 1 with the first drying tube 11 and the first drying oven 12 to meet the drying requirements over a long distance and also enhances the adaptability of the drying device.

[0091] Taking two-stage drying as an example, the first drying tube 11 and the first drying oven 12 form the first drying assembly 1, and the second drying tube 41 and the second drying oven 42 form the second drying assembly 4. The material to be dried is first dried for the first time in the first drying oven 12, and then dried for the second time in the second drying oven 42, which can strengthen the drying effect and also meet different drying requirements. Among them, the first drying gas in the first drying tube 11 can be set as high-temperature air, and the second drying gas in the second drying tube 41 can be set as normal temperature air, so that the material to be dried can be quickly dried in the first drying oven 12 first, and then cooled and dewatered in the second drying oven 42.

[0092] It should be noted that, as Figure 10 shown in the figure, the second drying oven 42 is similar in structure to the first drying oven 12, and the second drying tube 41 is similar in structure to the first drying tube 11, which will not be elaborated here.

[0093] As Figure 1 , Figure 2 , Figure 9 , Figure 12 and Figure 13As shown, a first exhaust member 124 may be provided at the air outlet end. The first exhaust member 124 can communicate the inside of the drying box with the outside, so that the humid gas in the drying box can be discharged to the outside through the first exhaust member 124, ensuring that the drying gas in the drying box is always dry, thereby guaranteeing its drying effect. Among them, the first exhaust member 124 includes, but is not limited to, an exhaust port and an exhaust pipe.

[0094] Optionally, the drying pipe includes a plurality of pipes connected in sequence. Each pipe includes a pipe body 111, a heating member 112, and a heat dissipation member 113. The heating member 112 and the heat dissipation member 113 are provided inside the pipe body 111, and the heat dissipation member 113 is arranged facing the heating member 112.

[0095] As Figure 1 and Figure 11 shown, setting the drying pipe to include a plurality of pipes connected in sequence, and the plurality of pipes jointly convey the drying gas, which can also adapt to different conveying distances. Among them, each pipe can independently perform heating and heat dissipation operations to achieve a more uniform and efficient drying process for the material to be dried.

[0096] As Figure 11 shown, the heating member 112 can heat the drying gas flowing through the pipe, while the heat dissipation member 113 can effectively and evenly dissipate the heated drying gas, ensuring that the temperature of the drying gas in each stage of the pipe remains uniform, and further ensuring the temperature uniformity and consistency of the drying gas output by the drying pipe.

[0097] Among them, the heating member 112 includes, but is not limited to, a heater and a heating wire, and the heat dissipation member 113 includes, but is not limited to, a heat sink and a fan. The heating member 112 and the heat dissipation member 113 are preferably made of materials with high temperature resistance and corrosion resistance, which can ensure the stability and reliability of the heating member 112 and the heat dissipation member 113 during long-term use.

[0098] In one embodiment, the heating temperature of each stage of the pipe can be set for independent control. That is, controllers are respectively provided in each stage of the pipe. The controller can adjust the heating temperature of the heating member 112 and / or the heat dissipation effect of the heat dissipation member 113 according to actual needs, thereby realizing flexible control of the drying temperature. This flexible temperature control method enables the drying device to adapt to the needs of different materials to be dried and drying processes, improving the adaptability and flexibility of the drying device.

[0099] In addition, by precisely controlling the heating and heat dissipation processes of each stage of the pipe, it can be ensured that the material to be dried can achieve an ideal drying effect during the drying process, avoiding quality problems caused by too high or too low temperature.

[0100] Optionally, a temperature sensor 114 is also provided on the pipeline body 111. The temperature sensor 114 is used to detect the temperature information inside the pipeline and transmit the temperature information to the controller, so that the controller can control the heating element 112 and the heat dissipation element 113, thereby meeting different drying requirements.

[0101] Optionally, the pipeline body 111 includes an inner pipe 1111, an outer shell 1112, and a heat insulation layer 1113. The heat insulation layer 1113 is provided between the inner pipe 1111 and the outer shell 1112.

[0102] Specifically, the three-layer setting of the pipeline body 111, on the one hand, strengthens the self-strength of the pipeline body 111 and avoids the leakage of drying gas caused by the rupture of the pipeline body 111; on the other hand, the multi-layer structure also enhances the heat insulation ability of the pipeline body 111, enabling the flowing drying gas to be stably maintained at a predetermined temperature.

[0103] As Figure 11 shown, sandwiching the heat insulation layer 1113 between the inner pipe 1111 and the outer shell 1112 can effectively reduce heat dissipation, ensuring that the heat generated by the heating element 112 can be maximally transferred to the drying gas flowing through the pipeline, thereby improving the heating efficiency. This efficient heat utilization method not only speeds up the drying speed of the material to be dried but also significantly reduces energy consumption, meeting the requirements of modern industry for energy conservation and emission reduction.

[0104] Among them, the inner pipe 1111 can be a stainless steel pipe, the outer shell 1112 can be a metal shell, and the heat insulation layer 1113 can be formed of heat insulation materials such as glass wool and polyurethane.

[0105] Moreover, the heat insulation layer 1113 can also isolate the influence of external temperature fluctuations on the temperature of the inner pipe 1111, making the temperature inside the pipeline more stable, which is conducive to achieving precise control of the drying temperature. This stable temperature control environment ensures that the material to be dried is evenly heated during the drying process, avoiding quality problems caused by temperature fluctuations.

[0106] In addition, the setting of the heat insulation layer 1113 also reduces the temperature difference between the inner pipe 1111 and the outer shell 1112, reduces the influence of thermal stress on the pipeline material, and thus extends the service life of the drying pipe. Moreover, the heat insulation layer 1113 can also protect the inner pipe 1111 from external corrosion and mechanical damage, further improving the reliability and durability of the drying pipe.

[0107] Optionally, it further includes a first filter 13 and a first blower 14. One end of the first blower 14 is connected to the first filter 13, and the other end of the first blower 14 is connected to the first drying pipe 11, so that normal temperature gas can be filtered by the first filter 13 and heated by the first blower 14 to obtain high-temperature first drying gas, and then transported into the first drying pipe 11.

[0108] Optionally, it further includes a second filter 43 and a second blower 44. One end of the second blower 44 is connected to the second filter 43, and the other end of the second blower 44 is connected to the second drying pipe 41, so that normal temperature gas can be filtered by the second filter 43 and dried by the second blower 44 to obtain normal temperature second drying gas, and then transported into the second drying pipe 41.

[0109] Optionally, it further includes an adjustment part and a first detection part connected by signal. The adjustment part and the first detection part are arranged in the drying pipe. The first detection part is used to detect the temperature information or air volume information of the drying pipe, and the adjustment part can adjust at least one of the flow rate and flow velocity of the drying gas based on the information.

[0110] Specifically, the first detection part can be a temperature sensor, which can detect the drying temperature in the drying pipe in real time so that the controller can control the adjustment part to adapt to different drying requirements. The first detection part can also be an air volume sensor, which can detect the gas volume in the drying pipe in real time so that the controller can control the adjustment part to adapt to different drying requirements.

[0111] Thus, based on the temperature information and / or air volume information in the drying pipe detected by the first detection part in real time and accurately, the controller can control the adjustment part, such as a valve, to realize the control of the flow rate and / or flow velocity of the drying gas, so as to meet different drying requirements. Thus, the drying device provided by the present invention can dynamically adjust the flow rate and flow velocity of the drying gas according to the characteristics and drying requirements of different materials to be dried, making the drying process more efficient and energy-saving, helping to reduce energy consumption and production costs.

[0112] Optionally, it further includes a second detection part, which is arranged in the drying box. The second detection part is used to detect the drying temperature of the drying box or the mass difference of the material to be dried before and after drying;

[0113] And / or, at least part of the drying box is provided with a heating part, and the material to be dried can be dried by the heating part in the drying box, so as to quickly remove the moisture in the material to be dried and improve the drying efficiency of the drying box. Among them, the heating part can include one or more heating pipes, which is convenient for the controller to adjust the drying temperature in the box body 121.

[0114] Specifically, the second detection unit can be a temperature sensor, which can detect the drying temperature in the drying oven in real time so that the controller can control it to adapt to different drying requirements. The second detection unit can also be two mass sensors, which respectively detect the mass of the material before and after drying, so as to obtain the moisture content in the material.

[0115] In addition, a heating part can be set in some drying ovens, and there is no heating part in the rest of the drying ovens, so as to conveniently form a temperature gradient. It is also possible to set heating parts in all drying ovens and design the heating temperature of the heating parts to form a temperature gradient.

[0116] Taking a single drying oven as an example, its internal structure is described below.

[0117] As Figures 1 to 3 and Figure 9 shown, each of the drying ovens includes:

[0118] A box body 121 and a drum part 122 provided on the box body 121. The drum part 122 includes a drum shaft 1223, a drum body 1221, and a drum sliding cover 1222. The drum sliding cover 1222 and the drum body 1221 are respectively sleeved on the drum shaft 1223. The drum body 1221 has a first opening 12211, and the drum body 1221 communicates with the box body 121 through the first opening 12211;

[0119] The drum sliding cover 1222 can rotate along the drum shaft 1223 to close or open the first opening 12211. When the drum sliding cover 1222 closes the first opening 12211, the drum sliding cover 1222 forms a driving connection with the drum body 1221; when the drum sliding cover 1222 opens the first opening 12211, the drum sliding cover 1222 is disengaged from the driving connection with the drum body 1221.

[0120] As Figure 1 and Figure 9 shown, the drying oven includes a box body 121 and a drum part 122. The box body 121 constitutes the main structure of the drying oven, and its internal space is used to accommodate the drum part 122 and other related structures. The material of the box body 121 can have good heat preservation performance and certain corrosion resistance, which can ensure the drying efficiency and safety.

[0121] As Figure 6As shown in the figure, the drum part 122 includes a drum shaft 1223, a drum body 1221, and a drum sliding cover 1222. The drum body 1221 is usually designed to be cylindrical or similar in shape, and has a space inside for loading materials to be dried. The side and bottom of the drum body 1221 are provided with ventilation holes or ventilation layers, so that the drying gas in the box body 121 can uniformly penetrate the materials and achieve efficient drying. One end of the drum body 1221 is provided with a first opening 12211 for the entry and exit of materials.

[0122] As Figure 6 shown in the figure, the drum sliding cover 1222 and the drum body 1221 are respectively sleeved on the drum shaft 1223. The drum sliding cover 1222 can rotate relative to the drum body 1221 along the drum shaft 1223, and open or close the first opening 12211 on the drum body 1221, thereby controlling the communication state between the drum body 1221 and the box body 121.

[0123] Specifically, when the drum sliding cover 1222 rotates forward to close the first opening 12211, the drum sliding cover 1222 forms a driving connection with the drum body 1221. That is, a driving force transmission path is formed between the drum sliding cover 1222 and the drum body 1221. At this time, driven by the driving structure, the drum sliding cover 1222 can drive the drum body 1221 to rotate together, so that the materials to be dried in the drum body 1221 can be fully and evenly contacted with the drying gas, thereby achieving a better drying effect.

[0124] Moreover, the rotation of the drum body 1221 not only promotes the full mixing of the drying gas and the materials to be dried, but also increases the gas renewal rate on the surface of the materials to be dried, helps to remove the moisture or volatile components in the materials to be dried, and improves the drying efficiency.

[0125] When the drum sliding cover 1222 rotates backward to open the first opening 12211, the drum sliding cover 1222 is disengaged from the driving connection with the drum body 1221. That is, a driving force transmission path cannot be formed between the drum sliding cover 1222 and the drum body 1221, that is, the drum body 1221 cannot rotate. At this time, the drum body 1221 is communicated with the box body 121 through the first opening 12211, and the materials to be dried can be loaded or the dried materials can be unloaded through the first opening 12211, so as to facilitate the cyclic progress of the subsequent drying process, also speed up the drying rhythm, and improve the drying efficiency.

[0126] In this way, by rotating the drum sliding cover 1222, the first opening 12211 can be closed or opened, thereby adjusting the communication state between the drum body 1221 and the box body 121, so as to realize reliable drying and convenient entry and exit of materials, and improve the flexibility and efficiency of the drying operation. This design not only facilitates the loading and unloading of materials, but also enables continuous processing of materials without interrupting the drying process. Moreover, reliable sealing and convenient opening of the first opening 12211 are achieved, avoiding gas leakage and material contamination during the drying process.

[0127] In addition, when the drum sliding cover 1222 closes the first opening 12211, the drum sliding cover 1222 forms a transmission connection with the drum body 1221. At this time, the drum body 1221 can rotate together under the drive of the drum sliding cover 1222 without the need to separately set a drive source, saving the layout cost and also reducing the space occupation inside the drying box, facilitating the miniaturization development of the drying box.

[0128] In one embodiment, a stirring member such as a rotating blade or a stirring shaft can be added inside the drum body 1221, which can improve the uniformity and drying efficiency of the material to be dried during the drying process.

[0129] In another embodiment, a temperature monitoring device and a control device can be added inside the box body 121 to monitor the temperature inside the box body 121 in real time and automatically adjust the heating power as needed to maintain a constant drying temperature, so as to meet the drying requirements of different materials to be dried.

[0130] In still another embodiment, a sealing strip or a gasket can be added between the drum sliding cover 1222 and the drum body 1221 to further improve the sealing performance of the first opening 12211.

[0131] In the drying box of the present invention, the drying gas inside the box body 121 can directly contact the material to be dried through the breathable structure or pores of the drum body 1221; or the drying gas can also be directly connected to the central axis of the drum body 1221, so that the drying gas is transmitted from the central axis of the drum body 1221 to the material to be dried, both of which can achieve fast and uniform drying.

[0132] Optionally, it further includes a driving part 3. The drum part 122 further includes a transmission part 1224. One end of the transmission part 1224 is connected to the driving end of the driving part 3, and the other end of the transmission part 1224 is connected to the drum sliding cover 1222;

[0133] Driven by the driving part 3, the transmission part 1224 can drive the drum sliding cover 1222 to rotate bidirectionally.

[0134] Specifically, the driving part 3 includes a driving motor, a chain and sprocket, a driving gear, etc., so as to be able to transmit the driving force of the driving motor to the driving gear through the chain and sprocket. The driving gear is in transmission connection with the transmission part 1224, so as to be able to realize the reliable transmission of the driving force of the driving part 3 - the transmission part 1224. In addition, the driving part 3 may also include a driving motor and a transmission gear set, which can also realize the reliable transmission of the driving force.

[0135] Among them, the driving part 3 is usually arranged outside the box body 121. For example, the driving part 3 can be arranged on the outer wall of the box body 121, which can facilitate the reliable transmission of the driving force while avoiding the influence of the high temperature inside the box body 121 on the normal operation of the driving part 3, and can also reduce the space occupation inside the box body 121, facilitating the miniaturization development of the drying box.

[0136] As Figure 6 and Figure 8 shown, the transmission part 1224 may include a gear 12241, a dial 12242 and a dial pin 12243. The gear 12241 is in transmission connection with the driving end of the driving part 3, so as to be able to transmit the driving force of the driving part 3 to the drum slide cover 1222 through the gear 12241, the dial 12242 and the dial pin 12243, and then be able to drive the rotation of the drum slide cover 1222.

[0137] Specifically, under the forward drive of the driving part 3, the driving part 3 can drive the drum slide cover 1222 to rotate forward through the gear 12241, the dial 12242 and the dial pin 12243 until it closes the first opening 12211. At this time, the sufficient mixing of the materials to be dried and the drying gas inside the drum body 1221 can be carried out.

[0138] Under the reverse drive of the driving part 3, the driving part 3 can drive the drum slide cover 1222 to rotate reversely through the gear 12241, the dial 12242 and the dial pin 12243 until it opens the first opening 12211. At this time, the drum body 1221 and the box body 121 are communicated through the first opening 12211, and the materials to be dried can be loaded or the dried materials can be unloaded through the first opening 12211.

[0139] Among them, the forward drive and the reverse drive of the driving part 3 can correspond to the forward rotation and the reverse rotation of the driving motor. Under the forward drive of the driving part 3, the drum slide cover 1222 can rotate forward; under the reverse drive of the driving part 3, the drum slide cover 1222 can rotate reversely.

[0140] Thus, the introduction of the driving part 3 and the transmission part 1224 enables the opening and closing operation of the drum sliding cover 1222 to be automatically controlled, eliminating the need for manual operation, reducing the labor intensity, and improving the drying efficiency. The automatic control also makes the opening and closing operation of the drum sliding cover 1222 more convenient, avoiding the risk of misoperation that may be caused by manual operation, and improving the safety of the drying oven.

[0141] Optionally, the drum part 122 further includes a reverse locking member 1225, which is arranged on the drum shaft 1223 and is used to control the one-way rotation of the drum body 1221.

[0142] As Figure 6 and Figure 7 shown, the reverse locking member 1225 can be a one-way rotating bearing, a ratchet and pawl mechanism, a wedge-type one-way clutch or other one-way rotating structures, which can ensure that the drum body 1221 can only rotate in a predetermined single rotation direction during the working process, avoiding drying oven failures or safety accidents caused by accidental reverse rotation, and can also prevent the drum body 1221 from shaking or shifting, ensuring the stability of the drum body 1221 during the drying process, and thus ensuring the uniform distribution and sufficient drying of the material to be dried inside the drum body 1221.

[0143] Among them, the setting of the reverse locking member 1225 makes the drum body 1221 unable to rotate in the direction opposite to the predetermined single rotation direction. That is, when the drum sliding cover 1222 rotates in the reverse direction under the drive of the driving part 3, the drum body 1221 will not rotate in the reverse direction, thus facilitating the opening of the first opening 12211.

[0144] Among them, according to the actual design, it can be set that the drum shaft 1223 rotates or does not rotate, and the reverse locking member 1225 is connected to the drum body 1221 through a rotating sleeve 1228, so that the drum body 1221 can only rotate in a predetermined single rotation direction and will not rotate in the reverse direction.

[0145] Optionally, the drum part 122 further includes an elastic member 1226, one end of the elastic member 1226 is connected to the drum body 1221, and the other end of the elastic member 1226 is connected to the drum sliding cover 1222;

[0146] Under the reverse drive of the driving part 3, the transmission part 1224 can drive the drum sliding cover 1222 to rotate reversely and open the first opening 12211, and the elastic part 1226 is in a stretched state; under the forward drive of the driving part 3, the transmission part 1224 can first drive the drum sliding cover 1222 to rotate forward to close the first opening 12211, and then drive the drum sliding cover 1222 and the drum body 1221 to rotate together, and the elastic part 1226 returns to its initial state.

[0147] As Figure 5 and Figure 6 shown, the drum sliding cover 1222 may include a sliding cover piece 12221 and a sliding cover support 12222. The sliding cover support 12222 is arranged on the rotating sleeve 1228 and connected to the transmission part 1224. The sliding cover piece 12221 is fixedly connected to the sliding cover support 12222, so that the driving force can be transmitted from the transmission part 1224 to the sliding cover support 12222 and drive the sliding cover support 12222 and the sliding cover piece 12221 to rotate together.

[0148] Among them, the elastic part 1226 can be a single or multiple springs. One end of the elastic part 1226 is connected to the drum body 1221, and the other end of the elastic part 1226 is connected to the drum sliding cover 1222. When the drum sliding cover 1222 rotates, the drum sliding cover 1222 can stretch the elastic part 1226 and cause the elastic part 1226 to undergo elastic deformation.

[0149] Specifically, under the reverse drive of the driving part 3, the driving part 3 can drive the drum sliding cover 1222 to rotate reversely through the transmission part 1224 to open the first opening 12211. At this time, materials can be loaded and unloaded through the first opening 12211. Moreover, the reverse rotation of the drum sliding cover 1222 will also stretch the elastic part 1226, causing the elastic part 1226 to undergo elastic deformation. At this time, the elastic force of the elastic part 1226 cooperates with the reverse rotation locking part 1225 to avoid the shaking of the drum body 1221 and enable the drum body 1221 to maintain a stable static state, thereby facilitating the reliability and safety of material loading and unloading.

[0150] In particular, when the drum body 1221 rotates to make the first opening 12211 opposite to the discharge port below the box body 121, that is, when discharging the dried materials, the shaking of the drum body 1221 will not only cause the first opening 12211 to shift and make the first opening 12211 unable to be completely opposite to the discharge port of the box body 121, but also drive the internal dried materials to perform a scattering movement, all of which will affect the discharging efficiency. At this time, the cooperation between the elastic force of the elastic part 1226 and the reverse rotation locking part 1225 can avoid the shaking of the drum body 1221, thereby ensuring the discharging efficiency.

[0151] Under the forward drive of the driving part 3, the driving part 3 can first drive the roller sliding cover 1222 to rotate forward through the transmission part 1224 to close the first opening 12211, so that the roller sliding cover 1222 forms a transmission connection with the roller body 1221, and the elastic part 1226 returns to its initial state. That is, before the roller sliding cover 1222 rotates back to close the first opening 12211, the elastic part 1226 is in a stretched state. The cooperation between the elastic force of the elastic part 1226 and the reverse locking part 1225 can prevent the roller body 1221 from shaking and enable the roller body 1221 to maintain a stable stationary state. After that, the driving part 3 can drive the roller sliding cover 1222 and the roller body 1221 to rotate together through the transmission part 1224, and fully mix the material to be dried and the drying gas.

[0152] In addition, the introduction of the elastic part 1226 also ensures a smooth transition of the roller sliding cover 1222 during the opening and closing processes, avoiding impacts and vibrations caused by sudden opening or closing, thereby enhancing the stability and reliability of the operation of the drying box.

[0153] Optionally, the end of the roller body 1221 has a protruding part 12212. When the roller sliding cover 1222 closes the first opening 12211, the roller sliding cover 1222 abuts against the protruding part 12212.

[0154] As Figure 6 shown, the protruding part 12212 is located at at least one end of the roller body 1221 and protrudes outward along the axial direction of the roller body 1221. When the roller sliding cover 1222 rotates to close the first opening 12211, the roller sliding cover 1222 can abut against the protruding part 12212 to form a transmission connection between the roller sliding cover 1222 and the roller body 1221, so that the roller sliding cover 1222 can drive the roller body 1221 to rotate together and achieve full mixing of the material to be dried and the drying gas.

[0155] Among them, usually one protruding part 12212 is arranged at each of the two ends of the roller body 1221, and the connection line of the two protruding parts 12212 is parallel to the axis of the roller body 1221. When the roller sliding cover 1222 rotates to close the first opening 12211, the roller sliding cover 1222 can abut against the protruding parts 12212 on both sides and form a reliable transmission connection between the roller sliding cover 1222 - the roller body 1221.

[0156] In another embodiment, an arc-shaped groove may be formed on one of the drum body 1221 and the drum sliding cover 1222, and a protrusion may be provided on the other of the drum body 1221 and the drum sliding cover 1222, and the protrusion can slide within the arc-shaped groove. When the protrusion slides to one end of the arc-shaped groove, i.e., the limiting area, the drum sliding cover 1222 closes the first opening 12211 and forms a driving connection with the drum body 1221; when the protrusion slides in the reverse direction and leaves the limiting area, the drum sliding cover 1222 opens the first opening 12211 and disengages from the driving connection with the drum body 1221.

[0157] Optionally, it further includes a first hopper 21 and a second hopper 22, the first hopper 21 and the second hopper 22 are respectively connected to the box body 121, and the box body 121 has a second opening and a third opening;

[0158] When the drum sliding cover 1222 closes the first opening 12211, the material to be dried can be dried within the drum body 1221; when the drum sliding cover 1222 opens the first opening 12211, the material to be dried can enter the drum body 1221 through the first hopper 21, the second opening and the first opening 12211, or the dried material can be discharged from the drum body 1221 through the first opening 12211, the third opening and the second hopper 22.

[0159] As Figure 6 shown, when the drum sliding cover 1222 closes the first opening 12211, a closed drying environment is formed inside the drum body 1221, and the material to be dried can be efficiently and evenly dried in this space.

[0160] When it is necessary to load new material to be dried or discharge the dried material, the drum sliding cover 1222 can open the first opening 12211. At this time, the material to be dried can conveniently enter the inside of the drum body 1221 through the first hopper 21, the second opening and the first opening 12211, or the dried material can be conveniently discharged from the inside of the drum body 1221 through the first opening 12211, the third opening and the second hopper 22. This design greatly simplifies the material handling process and improves the efficiency of the drying operation.

[0161] By introducing the hopper assembly 2 with the first hopper 21 and the second hopper 22, the drying box of the present invention can achieve continuous loading and unloading of materials, avoiding the interruption and waiting time in material handling in traditional drying equipment, and improving the utilization rate and production efficiency of the drying box.

[0162] Among them, the independent design of the first hopper 21 and the second hopper 22 enables the materials to be loaded and unloaded separately, further enhancing the flexibility of material handling. The first hopper 21 and the second hopper 22 can be arranged on two adjacent sides of the box body 121, or the first hopper 21 and the second hopper 22 can also be arranged on two opposite sides of the box body 121.

[0163] Optionally, the hopper assembly 2 further includes a first weighing hopper 23 and a second weighing hopper 24. The first weighing hopper 23 is arranged on the side of the first hopper 21 away from the drying box, and the second weighing hopper 24 is arranged on the side of the second hopper 22 away from the drying box.

[0164] Such as Figure 1 and Figure 2 As shown, the first weighing hopper 23 is used to weigh the material to be dried before drying, and the second weighing hopper 24 is used to weigh the dried material after drying. In this way, the moisture content in the material to be dried can be judged.

[0165] Among them, the working states of the first weighing hopper 23 and the second weighing hopper 24 can be controlled by a controller to facilitate the corresponding weighing detections of the two. Valves can also be respectively arranged at the outlet of the first weighing hopper 23 and the inlet of the second weighing hopper 24. By respectively controlling the opening degrees of the two valves by the controller, the quality and speed of feeding and discharging can be adjusted, and it is also convenient for the reliable control of the drying process.

[0166] Optionally, the box body 121 is provided with a first positioning member 1213, and the first positioning member 1213 is used to position the feeding station and the discharging station of the roller body 1221.

[0167] Specifically, the first positioning member 1213 includes, but is not limited to, an induction switch and a positioning piece. During the rotation of the roller body 1221, the induction switch can sense its rotation and respond when it rotates to the feeding station and the discharging station, so as to indicate that the roller body 1221 is exactly at the feeding station or the discharging station. Or, during the rotation of the roller body 1221, the positioning piece can form an obstruction when it rotates to the feeding station and the discharging station, and can also indicate that the roller body 1221 is exactly at the feeding station or the discharging station, both of which can ensure the reliability of material loading and discharging.

[0168] Such as Figure 3As shown, when the drum body 1221 rotates to the loading station, the first opening 12211 faces the second opening of the box body 121, and the material to be dried can be loaded; when the drum body 1221 rotates to the unloading station, the first opening 12211 faces the third opening of the box body 121, and the dried material can be discharged. During the rotation of the drum body 1221, the first positioning member 1213 can sense these two working positions, thus ensuring the reliability of material loading and unloading.

[0169] In addition, when there are two stacked drying boxes, a positioning member can be provided on the outer wall of each drying box. That is, the first positioning member 1213 is provided on the outer wall of the first drying box 12, and the second positioning member 422 is provided on the outer wall of the second drying box 42. The two positioning members are respectively used to position the rotation of the drum.

[0170] Optionally, drying gas flows inside the drum shaft 1223, and the outer periphery of the drum shaft 1223 has a fourth opening 12231 for transmitting the drying gas to the drum body 1221.

[0171] As Figure 4 shown, the design of the drum shaft 1223 enables the drying gas inside the drum shaft 1223 to directly enter the inside of the drum body 1221 through the fourth opening 12231 without passing through additional pipelines or spaces, thereby reducing the energy loss and time delay during the transmission of the drying gas, and also ensuring that the drying gas can be quickly and evenly distributed inside the drum body 1221, improving the contact efficiency between the drying gas and the material to be dried and the drying effect.

[0172] The setting of the drum shaft 1223 not only realizes the direct transmission of the drying gas, but also makes the structure of the entire drying box more compact. The drum shaft 1223, as a bridge connecting the external drying source and the drum body 1221, effectively reduces the redundant space of the drying box and improves the space utilization rate.

[0173] Among them, by providing the fourth opening 12231 on the outer periphery of the drum shaft 1223, it can be ensured that the drying gas is evenly distributed inside the drum body 1221. This evenly distributed drying gas helps the material to be dried obtain a more consistent drying effect during the drying process, avoiding problems such as local overheating or insufficient drying.

[0174] Among them, according to the actual design, the fourth opening 12231 can be an independent strip-shaped opening, or a combination of multiple strip-shaped openings and circular openings.

[0175] As Figure 4 shown, the support 1227 can be used to fix the drum shaft 1223 for easy installation.

[0176] Optionally, a wind guiding member 12232 is provided on the outer periphery of the drum shaft 1223. The wind guiding member 12232 is located at the fourth opening 12231 and is used to guide the transmission of the drying gas.

[0177] And / or, a material guiding member 12233 is provided on the outer periphery of the drum shaft 1223. The material guiding member 12233 is used to guide the movement of the material to be dried.

[0178] As Figure 4 shown, one or more wind guiding members 12232 may be provided on the outer periphery of the drum shaft 1223. The wind guiding member 12232 is used to guide the drying gas flowing out from the fourth opening 12231, so as to ensure the uniform distribution of the drying gas inside the drum body 1221. This uniformly distributed drying gas helps the material to be dried obtain a more consistent drying effect during the drying process, avoiding problems such as local overheating or insufficient drying. Among them, the wind guiding member 12232 may be a wind guiding plate, a wind guiding strip, a wind guiding piece, etc.

[0179] As Figure 4 shown, the material guiding member 12233 can guide the movement of the material to be dried, prevent the material to be dried from adhering to the drum shaft 1223, and further ensure that the material to be dried can be fully mixed with the drying gas inside the drum body 1221 and achieve better drying.

[0180] Optionally, both the drum sliding cover 1222 and the drum body 1221 are in a sieve-like structure.

[0181] Specifically, the sieve-like structure enables the humid gas inside the drum body 1221 to be discharged and exhausted to the outside through the first exhaust member 124 of the drying box, so as to ensure that the drying gas inside the drum body 1221 is always dry, thereby ensuring its drying effect.

[0182] Among them, the design of the sieve holes only allows the humid gas to be discharged, while the material cannot enter or exit, so as to avoid abnormal dropping of the material.

[0183] In the above embodiments, the differences between the embodiments are mainly described. As long as the different optimization features between the embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, it will not be elaborated here.

[0184] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A drying device, characterized in that: include: At least two drying boxes are arranged in series, each of which has a feed end and a discharge end, the feed end of the first drying box is used to load the material to be dried, the discharge end of the last drying box is used to discharge the dried material, and the feed ends of the remaining drying boxes can be connected to the discharge end of the previous drying box, so that the material to be dried can pass through multiple drying boxes in sequence and be dried multiple times; Furthermore, along the arrangement direction from the first drying box to the last drying box, the drying temperature of the drying box changes.

2. The drying device according to claim 1, characterized in that: Along the arrangement direction from the first drying box to the last drying box, the drying temperature of the drying box gradually decreases.

3. The drying device according to claim 1, characterized in that: The plurality of drying boxes are stacked and arranged in a vertical direction, and the discharge end of the drying box located at the top is communicated with the feed end of the adjacent drying box located at the bottom.

4. The drying device according to claim 1, characterized in that: A plurality of drying boxes are arranged side by side in a horizontal direction.

5. The drying device according to claim 4, characterized in that: It also comprises a feeding part (5), one end of which is connected to the feeding end of the drying box, and the other end of which is connected to the discharging end of the previous drying box. The feeding part (5) is used to transfer the material to be dried.

6. The drying device according to claim 5, characterized in that: One end of the feed portion (5) is detachably connected to the feed end of the drying box, and the other end of the feed portion (5) is detachably connected to the discharge end of the previous drying box.

7. The drying device according to claim 1, characterized in that: The number of the drying boxes is not less than three, some of the drying boxes are stacked in a vertical direction, and other parts of the drying boxes are arranged side by side in a horizontal direction.

8. The drying device according to claim 1, characterized in that: Each of the feed ends is provided with a first sealing plate (123), the first sealing plate (123) being movably connected to the feed end of the drying box and capable of closing or opening the feed opening; Each of the discharge ends is provided with a second sealing plate, which is movably connected to the discharge end of the drying box and can close or open the discharge port.

9. The drying device according to claim 1, characterized in that: It also includes at least two drying tubes, each of which has dry gas flowing in it, each of which has an air inlet end and an air outlet end, each of which is connected to an air inlet end so as to be able to transmit the dry gas to the drying box, and the air outlet end is used to discharge the moist gas.

10. The drying device according to claim 9, characterized in that: It also includes a signal-connected adjustment unit and a first detection unit, wherein the adjustment unit and the first detection unit are arranged in the drying tube, the first detection unit is used to detect temperature information or air volume information of the drying tube, and the adjustment unit can adjust at least one of the flow rate and flow velocity of the drying gas based on the information.

11. The drying device according to claim 1, characterized in that: It also includes a second detection unit, which is disposed in the drying box and is used to detect the drying temperature of the drying box or the quality difference of the material to be dried before and after drying; And / or, at least a portion of the drying box is provided with a heating portion, and the material to be dried can be dried by the heating portion in the drying box.

12. The drying device according to claim 1, characterized in that: Each of the drying boxes comprises a box body (121) and a roller part (122) arranged on the box body (121); the roller part (122) comprises a roller shaft (1223), a roller body (1221) and a roller sliding cover (1222); the roller sliding cover (1222) and the roller body (1221) are respectively sleeved on the roller shaft (1223); the roller body (1221) has a first opening (12211); and the roller body (1221) and the box body (121) are connected through the first opening (12211); The roller sliding cover (1222) can rotate along the roller shaft (1223) and close or open the first opening (12211); when the roller sliding cover (1222) closes the first opening (12211), the roller sliding cover (1222) forms a transmission connection with the roller body (1221); when the roller sliding cover (1222) opens the first opening (12211), the roller sliding cover (1222) is disconnected from the roller body (1221).

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