An air flow drying apparatus

Abstract

The utility model provides a kind of airflow drying device, belong to airflow drying technical field;Including: airflow drying chamber, still include: several drying flow guide components, several drying flow guide components are connected in series by pipeline, and drying flow guide component is arranged at the tail of airflow drying chamber;Several sealing components, several sealing components are respectively movably arranged at the outside of drying flow guide component;Several filtering dispersion components, several filtering dispersion components are respectively arranged in the inside of sealing component;Several filtering fixed components, several filtering fixed components are respectively arranged at the outside of sealing component and filtering dispersion component;The device is integrated by ultrasonic vibration and multiple drying flow guide structure, realizes efficient, energy-saving airflow drying, effectively prevents material agglomeration, improves drying uniformity and equipment reliability;Overall, the device structure is compact, degree of automation is high, applicable to a variety of materials, reduces operation and maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of airflow drying technology, and specifically relates to an airflow drying device. Background Technology

[0002] Airflow drying is a technology that uses high-speed hot airflow to suspend and instantly dry wet materials. It is widely used in industries such as chemical, food, pharmaceutical, and materials. The core of this field lies in achieving efficient heat and mass transfer through gas-solid two-phase flow. It has advantages such as fast drying speed and large processing capacity, but it also has several technical challenges.

[0003] First, materials are prone to agglomeration or adhesion during the drying process. This is due to adsorption between particles caused by moisture or electrostatic effects on the surface of the particles. Agglomeration reduces drying efficiency because hot air cannot fully contact the interior of the particles, resulting in uneven drying, increased energy consumption, and even equipment blockage. For example, in the preparation of nano-magnesium oxide, agglomeration is particularly prominent when drying high-humidity precursors, requiring additional mechanical dispersion devices. However, traditional methods such as agitators or airflow impact have limited effectiveness and are prone to introducing wear or secondary contamination.

[0004] Secondly, inaccurate temperature control and low thermal efficiency are common problems. Airflow drying relies on hot air temperature, but existing devices often suffer from uneven heating or significant heat loss, leading to high energy consumption. Taking the patent "An Airflow Drying Device" with publication number CN 220793748U as an example, this patent improves temperature control by setting up temperature sensors and heating tubes, and utilizes hot air circulation for energy saving. However, its shortcomings are: the device mainly focuses on temperature monitoring and heating efficiency, but does not effectively solve the problem of material agglomeration. Although it has an auger conveyor inside the drying tube, the auger is only a feeding device and cannot dynamically disperse the material during the drying process; and although the converging tube in this patent increases the flow rate, it may exacerbate material collision and agglomeration, lacking an active dispersion mechanism. Therefore, for easily agglomerated materials, this patented device may still be inefficient and have high energy consumption. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a specific technical solution: an airflow drying device, comprising: an airflow drying chamber, and further comprising: a plurality of drying guide components, wherein the plurality of drying guide components are connected in series via pipes and are disposed at the tail end of the airflow drying chamber; a plurality of sealing components, wherein the plurality of sealing components are movably disposed outside the drying guide components; a plurality of filtering and dispersing components, wherein the plurality of filtering and dispersing components are disposed inside the sealing components; and a plurality of filtering and fixing components, wherein the plurality of filtering and fixing components are disposed outside the sealing components and the filtering and dispersing components; the plurality of drying guide components include: an upper guide tank, wherein the upper guide tank is disposed at the upper end of the airflow drying chamber; a plurality of connecting columns, wherein the plurality of connecting columns are disposed around the upper guide tank; and a lower guide tank, wherein the lower guide tank is disposed inside the plurality of connecting columns.

[0006] Preferably, the plurality of sealing components include: two sealing seats, which are respectively disposed at the edges of the upper guide tank and the lower guide tank; two sealing buckles, which are respectively movably disposed outside the sealing seats and are fastened by bolts; and a sealing cloth, the two ends of which are respectively located between the sealing seats and the sealing buckles.

[0007] Preferably, the plurality of the filtering and dispersing components include: a dispersing filter screen disposed inside the sealing cloth; a filter screen fixing ring disposed outside the sealing cloth, the filter screen fixing ring fixing the dispersing filter screen inside the sealing cloth; and an ultrasonic transducer disposed on the lower wall surface of the dispersing filter screen, and the control line of the ultrasonic transducer passing through the hole of the lower guide tank.

[0008] Preferably, the plurality of filter fixing components include: a filter fixing seat, the filter fixing seat being disposed outside the filter screen fixing ring; two fixing elastic ropes, one end of the two fixing elastic ropes being respectively disposed on the upper and lower walls of the filter fixing seat; and two filter limiting plates, the two filter limiting plates being respectively disposed outside the sealing buckle of the upper guide tank and the sealing buckle of the lower guide tank, and the two filter limiting plates being respectively disposed on the other end of the fixing elastic ropes.

[0009] Preferably, the tail end of the drying guide assembly is provided with a cyclone separator via a pipe.

[0010] Preferably, the tail end of the cyclone separator is equipped with a bag filter via a pipe.

[0011] Preferably, the lower wall of the airflow drying chamber is provided with a hot air inlet pipe.

[0012] Preferably, the side wall of the airflow drying chamber is provided with a feed hopper.

[0013] Preferably, the ultrasonic transducer and the lower guide tank are provided with sealant.

[0014] Preferably, the ultrasonic transducer is provided with a sealing cover.

[0015] Compared with the prior art, the airflow drying device of this utility model has the following advantages: by integrating ultrasonic vibration and multiple drying guide structures, the airflow drying device achieves efficient and energy-saving airflow drying, effectively prevents material agglomeration, and improves drying uniformity and equipment reliability; overall, the device has a compact structure, a high degree of automation, is suitable for a variety of materials, and reduces operating and maintenance costs.

[0016] This device integrates ultrasonic vibration and multiple drying guide structures to achieve efficient and energy-saving airflow drying, effectively preventing material agglomeration and improving drying uniformity and equipment reliability. Overall, the device has a compact structure, a high degree of automation, is suitable for a variety of materials, and reduces operating and maintenance costs.

[0017] This device solves the problems of short drying path and insufficient material residence time by using a drying guide component, thereby extending the drying time and enhancing heat exchange. The series design makes the airflow form a vortex, which improves the heat transfer efficiency. Compared with single-stage drying, the drying efficiency is improved.

[0018] This device solves the problem of uneven drying caused by material agglomeration or adhesion through a filtration and dispersion component, achieving the effect of particle separation and uniform drying; ultrasonic vibration disperses agglomerated materials instantly, improving drying uniformity while avoiding clogging and extending equipment life.

[0019] This device solves the structural instability problem caused by vibration transmission through the filter fixing component, achieving the effect of isolating vibration and protecting the tank; the elastic rope provides flexible support to ensure that the vibration of the dispersed filter screen does not interfere with the main structure, and the noise of the equipment operation is reduced. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of the airflow drying device provided by this utility model; Figure 2 A partial structural diagram of the airflow drying device provided by this utility model; Figure 3 A second partial structural schematic diagram of the airflow drying device provided by this utility model; Figure 4 An exploded view of the third partial structure of the airflow drying device provided by this utility model; in, Figures 1 to 4The attached diagram and components of the airflow drying device are as follows: 1. Airflow drying chamber; 2. Upper guide tank; 3. Connecting column; 4. Lower guide tank; 5. Sealing seat; 6. Sealing buckle; 7. Sealing cloth; 8. Dispersing filter screen; 9. Filter screen fixing ring; 10. Ultrasonic transducer; 11. Filter fixing seat; 12. Fixing elastic rope; 13. Filter limiting plate; 14. Cyclone separator; 15. Bag dust collector; 16. Hot air inlet pipe; 17. Feed hopper. Detailed Implementation

[0021] The following are specific implementation cases and appendices. Figures 1-4 This utility model will be further described, but it is not limited to these embodiments. This utility model provides a technical solution: an airflow drying device, comprising: an airflow drying chamber 1, and further comprising: a plurality of drying guide components, which are connected in series via pipes and disposed at the tail end of the airflow drying chamber 1; a plurality of sealing components, which are movably disposed outside the drying guide components; a plurality of filtering and dispersing components, which are disposed inside the sealing components; and a plurality of filtering and fixing components, which are respectively disposed... Outside the sealing assembly and the filtration and dispersion assembly; several drying and guiding assemblies include: an upper guiding tank 2, which is disposed at the upper end of the airflow drying chamber 1; several connecting columns 3, which are respectively disposed around the upper guiding tank 2; a lower guiding tank 4, which is disposed inside the several connecting columns 3; a cyclone separator 14 is provided at the tail end of the drying and guiding assembly through a pipe; a bag filter 15 is provided at the tail end of the cyclone separator 14 through a pipe; a hot air inlet pipe 16 is provided on the lower wall of the airflow drying chamber 1; and a feed hopper 17 is provided on the side wall of the airflow drying chamber 1.

[0022] As a preferred embodiment, further, several sealing components include: two sealing seats 5, which are respectively disposed at the edges of the upper guide tank 2 and the lower guide tank 4; two sealing rings 6, which are respectively movably disposed outside the sealing seats 5 and are fastened by bolts; and a sealing cloth 7, with both ends of the sealing cloth 7 located between the sealing seats 5 and the sealing rings 6.

[0023] As a preferred embodiment, further comprising several filtration and dispersion components including: a dispersion filter 8 disposed inside the sealing cloth 7; a filter fixing ring 9 disposed outside the sealing cloth 7, the filter fixing ring 9 fixing the dispersion filter 8 inside the sealing cloth 7; and an ultrasonic transducer 10 disposed on the lower wall surface of the dispersion filter 8, with the control line of the ultrasonic transducer 10 passing through the hole in the lower guide tank 4. The ultrasonic transducer 10 and the lower guide tank 4 are provided with sealant, and the ultrasonic transducer 10 is provided with a sealing cover.

[0024] As a preferred embodiment, further comprising several filter fixing components including: a filter fixing seat 11, which is disposed outside the filter screen fixing ring 9; two fixing elastic ropes 12, one end of which is disposed on the upper and lower walls of the filter fixing seat 11 respectively; and two filter limiting plates 13, which are disposed outside the sealing buckle 6 outside the upper guide tank 2 and the sealing buckle 6 outside the lower guide tank 4 respectively, and the other end of the two filter limiting plates 13 is disposed on the other end of the fixing elastic ropes 12 respectively.

[0025] Working principle: When using this device, the operator first fixes the device in the designated position, connects the external AC power supply to the device to provide energy for the electrical equipment in the device, and connects the matching controller to the electrical equipment to provide control and working logic for the electrical equipment; the operator connects the outlet of the hot air blower and the hot air inlet pipe 16 to provide hot air for the drying of this device.

[0026] The operator starts the device, the hot air blower starts, and hot air is discharged from the hot air blower outlet. It enters the airflow drying chamber 1 through the hot air inlet pipe 16, and then continuously enters several upper guide tanks 2 and lower guide tanks 4 connected end to end through the pipes, as well as the sealing cloth 7. Finally, it is discharged through the cyclone separator 14 and the bag filter 15. At the same time, several ultrasonic transducers 10 start. The cyclone separator 14 and the bag filter 15 also start synchronously. In order to enhance efficiency, the outlet of the bag filter 15 is assisted by an air pump for exhaust.

[0027] The ultrasonic transducer 10 is activated by a controller, which causes the dispersion filter 8 to vibrate. The dispersion filter 8 is fixed by a fixed elastic rope 12. Meanwhile, the upper guide tank 2 and the lower guide tank 4 are connected by a sealing cloth 7. Therefore, the vibration of the dispersion filter 8 cannot be transmitted to the upper guide tank 2 and the lower guide tank 4, effectively avoiding the impact of vibration on the equipment.

[0028] Next, the operator feeds the raw material into the airflow drying chamber 1 through the feed hopper 17. Under the action of hot air, the raw material flows from the airflow drying chamber 1 through pipes into several interconnected upper guide tanks 2 and lower guide tanks 4. It is then separated by a cyclone separator 14, separating the powder raw material. The separated air then enters a bag filter 15 through pipes for dust removal before being discharged. When the mixture of hot air and raw material passes through the vibrating dispersion filter 8, it breaks up any agglomerates or adhesions between the materials, ensuring that the materials are in a separated state. Passing through several dispersion filters 8 further ensures the dispersion of the materials.

[0029] Among them, the airflow drying chamber 1, the upper guide tank 2, and the lower guide tank 4 are equipped with heat insulation layers on the outside, which can reduce energy consumption.

[0030] Example: This airflow drying device mainly includes an airflow drying chamber 1, several drying guide components, sealing components, filtration and dispersion components, filtration and fixing components, and auxiliary equipment such as a cyclone separator 14 and a bag filter 15. The entire device is connected in series through pipelines to form a continuous drying path. The airflow drying chamber 1 serves as the initial drying zone, with hot air entering through the hot air inlet pipe 16 and material added through the feed hopper 17. The drying guide components consist of multiple units connected in series, each unit including an upper guide tank 2, a connecting column 3, and a lower guide tank 4, used to extend the material residence time and enhance the drying effect. The sealing components ensure that all connections are sealed to prevent air leakage; the filtration and dispersion components disperse the material through ultrasonic vibration to prevent agglomeration; and the filtration and fixing components provide stable support. The tail end is connected to the cyclone separator 14 and the bag filter 15 for material separation and exhaust gas treatment.

[0031] The drying and guiding assembly is the core component of the device, consisting of multiple units connected in series. Each unit includes an upper guiding tank 2, connecting columns 3, and a lower guiding tank 4. The upper end of the upper guiding tank 2 is connected to the airflow drying chamber 1 or the pipeline of the previous unit via a flange, and the lower end is connected to the lower guiding tank 4 via the connecting columns 3. The inner wall of the upper guiding tank 2 is smooth to reduce material adhesion. The connecting columns 3 are evenly distributed between the upper guiding tank 2 and the lower guiding tank 4, serving as support and guiding elements. The lower guiding tank 4 has a similar structure to the upper guiding tank 2, but has an outlet at the bottom, which is connected to the next drying and guiding unit or the cyclone separator 14 via a pipeline. The lower guiding tank 4 has a guide plate inside to create vortexes in the airflow, enhancing drying efficiency. The side wall of the lower guiding tank 4 has openings for installing the wires of the ultrasonic transducer 10, and the openings are sealed with high-temperature resistant sealant to prevent air leakage.

[0032] The sealing assembly ensures a tight seal at the connection points of the drying guide assembly, preventing hot air leakage. Each drying guide unit has a sealing assembly at both ends, including a sealing seat 5, a sealing ring 6, and a sealing cloth 7. The sealing seat 5 is fixed to the edges of the upper guide tank 2 and the lower guide tank 4. It is a ring-shaped structure made of fluororubber, resistant to temperatures up to 300°C. One side of the sealing seat 5 is welded to the tank body, and the other side provides a sealing surface. During installation, the tank edges must be cleaned first, then high-temperature sealant applied, and then the sealing seat 5 pressed and fixed. The sealing ring 6 is movably positioned outside the sealing seat 5 and is a separable ring-shaped ring, secured with bolts. The inner side of the sealing ring 6 has a groove that cooperates with the sealing seat 5 to form a compression space. Stainless steel bolts are used for tightening, ensuring uniform compression. The sealing cloth 7 is made of fiberglass fabric, which is high-temperature resistant and flexible, and wraps around the connection points. Both ends of the sealing cloth 7 are embedded between the sealing seat 5 and the sealing ring 6. When the bolts are tightened, the sealing cloth 7 is compressed, forming an elastic seal.

[0033] The filtration and dispersion assembly is a key component in preventing material agglomeration. Installed inside each drying and guiding unit, it includes a dispersion filter 8, a filter retaining ring 9, and an ultrasonic transducer 10. The dispersion filter 8, made of stainless steel wire mesh, is installed inside the sealing cloth 7, located between the upper guiding tank 2 and the lower guiding tank 4. The dispersion filter 8 allows airflow but intercepts adhering material; its surface is polished to reduce adhesion. The filter retaining ring 9 is an annular frame that secures the dispersion filter 8 inside the sealing cloth 7. The filter retaining ring 9 is spot-welded to the edge of the dispersion filter 8 and then integrally embedded in the sealing cloth 7. The ultrasonic transducer 10, a piezoelectric transducer, is installed at the center of the lower wall surface of the dispersion filter 8. The housing of the ultrasonic transducer 10 is made of stainless steel and filled with thermally conductive silicone to ensure heat dissipation. Its control line passes through a hole in the lower guiding tank 4, which is double-sealed with high-temperature sealant and a rubber sealing cover to prevent air leakage and high-temperature damage.

[0034] The filter fixing assembly provides additional support to prevent displacement of the filter dispersion assembly. It includes a filter fixing base 11, fixing elastic ropes 12, and a filter limiting plate 13. The filter fixing base 11 secures the two fixing elastic ropes 12, which are made of high-temperature resistant rubber. One end of each rope connects to the upper and lower walls of the filter fixing base 11, and the other end connects to the filter limiting plate 13. The filter limiting plate 13 is a plate-like structure installed on the sealing rings 6 outside the upper guide tank 2 and the lower guide tank 4. The fixing elastic ropes 12 restrict the radial displacement of the dispersion filter screen 8 but allow axial vibration.

[0035] In other components, the cyclone separator 14 is connected to the last drying guide unit via a pipe for gas-solid separation. The cyclone separator 14 is a standard design with tangential inlet entry, forming a vortex. Powdered material settles to the bottom where the fan shuts off, while clean gas exits from the top. A bag filter 15 is connected to the outlet of the cyclone separator 14 for further filtration of fine dust. The bag material is polyester fiber, with a temperature resistance of 150°C. An induced draft fan is installed at the outlet to maintain negative pressure in the system; the airflow is adjustable. A hot air inlet pipe 16 connects to an external hot air fan, delivering hot air into the airflow drying chamber 1.

[0036] The electrical control system is the core of the automated operation of the equipment, including PLC controllers, sensors, actuators, etc. All electrical equipment is integrated and controlled through the controller to ensure safety and efficiency. Controller selection: A Siemens S7-1200 PLC is used as the main controller, equipped with digital and analog modules. Its control logic and workflow are as follows: ① Startup sequence: The operator sets parameters via HMI. During startup, the PLC first checks the system ready signal. Then, the following are started in sequence: induced draft fan at the outlet of bag filter 15 → hot air fan → ultrasonic transducer 10 → feed hopper 17 → cyclone separator 14.

[0037] ② Temperature control: A PT100 temperature sensor is installed at the inlet of the hot air inlet pipe 16. The PLC adjusts the heating power of the hot air blower. When the temperature exceeds the limit, an alarm is triggered and the machine stops.

[0038] ③ Control of ultrasonic transducers 10: The ultrasonic transducers 10 of each drying and guiding unit are independently controlled, with the frequency and amplitude adjusted by the PLC output signal. The vibration frequency is automatically adjusted according to the material moisture content: when the moisture content is >20%, the frequency is set to 30kHz; when the moisture content is 10-20%, the frequency is set to 25kHz. The amplitude is controlled by current feedback to ensure uniform vibration.

[0039] ④ Safety Logic: The system has multiple protections: a pressure sensor monitors the pipeline pressure, and if the pressure is too high, the feeding rate is reduced; a vibration sensor monitors abnormal vibration of the equipment and triggers a shutdown; an emergency stop button is hard-wired to the PLC for priority shutdown.

[0040] In the description of this utility model, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An airflow drying apparatus, comprising: The airflow drying chamber (1) is characterized in that it further includes: A plurality of drying guide components are connected in series through pipes, and the drying guide components are disposed at the tail end of the airflow drying chamber (1). A plurality of sealing assemblies are respectively movably disposed outside the drying and guiding assembly; A plurality of filter dispersion components are disposed inside a sealing component; A plurality of filter fixing components are respectively disposed outside the sealing component and the filter dispersing component; Several of the drying and guiding components include: Upper guide tank (2), the upper guide tank (2) is located at the upper end of the airflow drying chamber (1); A plurality of connecting columns (3) are respectively arranged on the periphery of the upper guide tank (2); The lower guide tank (4) is disposed inside several connecting columns (3).

2. The airflow drying apparatus according to claim 1, characterized in that, Several of the sealing components include: Two sealing seats (5) are respectively located at the edges of the upper guide tank (2) and the lower guide tank (4); Two sealing rings (6) are respectively movably disposed outside the sealing seat (5), and the two sealing rings (6) are fastened by bolts; The sealing cloth (7) has two ends located between the sealing seat (5) and the sealing buckle (6), respectively.

3. The airflow drying apparatus according to claim 1, characterized in that, Several of the filter dispersion components include: A dispersion filter (8) is disposed inside the sealing cloth (7); A filter screen fixing ring (9) is provided on the outside of the sealing cloth (7) and the filter screen fixing ring (9) fixes the dispersed filter screen (8) inside the sealing cloth (7). An ultrasonic transducer (10) is disposed on the lower wall of a dispersion filter (8), and the control line of the ultrasonic transducer (10) passes through the hole of the lower guide tank (4).

4. The airflow drying apparatus according to claim 1, characterized in that, Several of the filter fixing components include: A filter fixing seat (11) is provided outside the filter screen fixing ring (9); Two fixed elastic ropes (12) are provided, with one end of each fixed elastic rope (12) being disposed on the upper and lower walls of the filter fixing seat (11); Two filter limiting plates (13) are respectively set outside the sealing ring (6) outside the upper guide tank (2) and outside the sealing ring (6) outside the lower guide tank (4), and the two filter limiting plates (13) are respectively set at the other end of the fixed elastic rope (12).

5. The airflow drying apparatus according to claim 1, characterized in that, The tail end of the drying guide assembly is equipped with a cyclone separator (14) via a pipe.

6. The airflow drying apparatus according to claim 5, characterized in that, The tail end of the cyclone separator (14) is equipped with a bag filter (15) through a pipe.

7. The airflow drying apparatus according to claim 1, characterized in that, The lower wall of the airflow drying chamber (1) is provided with a hot air inlet pipe (16).

8. The airflow drying apparatus according to claim 1, characterized in that, The side wall of the airflow drying chamber (1) is provided with a feed hopper (17).

9. The airflow drying apparatus according to claim 3, characterized in that, The ultrasonic transducer (10) and the lower guide tank (4) are provided with sealant.

10. The airflow drying apparatus according to claim 3, characterized in that, The ultrasonic transducer (10) is provided with a sealing cover.

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